Which Jump Starter Is the Best?

 

Car jump starter is an important tool for drivers. It can help you out during crises. Moreover, it can get your car moving once again. So, you don’t have to be stranded by the roadside. Similarly, it can help you avoid roadside assistance charges. You can jump-start your car by yourself and get going. However, there are hundreds of options in the market. So, you need to know the best one before purchasing it.

Table of Contents

• What Is the Best Jump Starter in The Market?
• GREPOW Rechargeable Battery Jump Starter
• Basic Features
• Wireless Charging Capabilities
• Customizable Pouch Cell Lithium battery
• Security Features
• Miscellaneous Features
  • The Compact Size
  • Easy Charging Capabilities
• The Bottom Line

What Is the Best Jump Starter in The Market?

Jump starters are among the most important tools to have for vehicle owners. These can help you with roadside emergencies. Moreover, these can help get out of any crisis situation if your car isn’t working or needs a “jump-start” to get back into action. We offer the best jump starters and CEM/ODM solutions on the market. Let’s see what these bring to the table.

GREPOW Rechargeable Battery Jump Starter

This amazing option can jump start up to 12V engines without hassles. So, you can use it for 6-Liter diesel 12V engines and 8-Liter gasoline on the go. Moreover, this kit comes with a built-in air inflator. It can help you change tires on the road without having to waste your energy on a mechanical tool. However, this is merely one of the CEM/ODM solutions available to our customers. We offer multiple sizes, dimensions, and capacities per your requirements.

Basic Features

An amazing benefit of this option is that you can detect tire pressure. You can enjoy an air pressure sensor accuracy of up to ±2 PSI. You will also see LED lighting on top of this machine. This will help you understand everything with accuracy.

The maximum battery capacity is 20000mAh or 74Wh. The starting current for this machine is 1000A, whereas the peak current is at 2000A. There are also three different lighting modes, such as SOS, stroboscopic, and constant light. This compact jump starter is ideal for frequent travelers. Let’s explore other options in detail.

We offer multiple CEM/ODM solutions to our customers. The details mentioned above belong to one of our solutions. We offer customizable and adaptable solutions per your requirements.

Wireless Charging Capabilities

GREPOW Rechargeable Battery Jump Starter is among the best options on the market. Moreover, it offers wireless charging capabilities. Similarly, it comes equipped with a high-speed polymer battery. However, most jump starters still use a lead-acid starter. Therefore, you can enjoy high-speed charging on the go.

Customizable Pouch Cell Lithium battery

If you want a specific jump starter made for your vehicle, this is the right option for you. Moreover, you can customize the starter cells per your requirements. Therefore, you can choose from the best cells and stack them accordingly. This is something unique. So, you will not see this option in other jump starters on the market.

Structure of pouch cell battery

All the starter cells offer high performance in terms of power. Moreover, they offer amazing discharge and life cycles. So, you can keep enjoying the option for a long time. Here is the most common formation with this option:

• GRP3968088
• GRP4642126
• GRP5760078
• GRP6260078
• GRP7542126
• GRP8042126

Security Features

One of the best things about this option is the amazing security features. Therefore, you can take this anywhere with you. Moreover, there are protection circuits to safeguard the device on the road. Here are some of the topmost security features you can enjoy with this.

• Short Circuit Protection: One of the biggest issues with portable jump starters is the short circuit issues. However, you will not have to worry about that with this option. The circuitry is designed to handle overloads, sudden bursts, and other issues.
• Over-Temperature Protection: Another issue is the temperature overload with jump-starting kits. However, this option comes with an over-temperature protection system. So, you can easily use it between the -20℃ to 50℃ temperature range without worries.
• Reverse-Polarity Protection: Sometimes, people can accidentally put the wrong wires on the wrong terminals. This can easily damage the battery of your car. However, this option can fight against that and keep the polarity in sync. The LED lighting will show you if the wires are on the wrong terminals.
• Reverse-Charge Protection: You must have heard of the reverse-charge issue with such devices. However, this device never becomes a victim of a reverse charge. So, you can use it without any problems.
• Over-Charge Protection: Another issue is the over-charge issue with such devices. However, this is a programmable option. Therefore, you will never have to worry about this jump starter over-charging the car engine. You can program it to stop upon command.

Miscellaneous Features

If you thought this device could only jump-start cars, you are wrong. It can help out with other electronic devices, such as:

• Smartphones
• Tablets
• USB-Charged Devices

Therefore, you can easily connect other devices with this option and charge them on the road. Moreover, you will not have to worry about the hassles of cords. This device offers wireless charging capabilities as well. So, you can place your smartphone on top of the devices and charge it with the right tools.

You can also charge your laptop with the 12V connections in this option. However, the 9V plugs can also charge electronic devices. It can easily charge up to three devices simultaneously.

The Compact Size

Do you want your jump starter to be huge? If the answer is no, this device is ideal for you. It offers a compact size and dimensions of 221mm x 89mm x 28mm. Moreover, the net weight for this device is also 675 grams. Therefore, you can easily pack it or keep it under your car seat. You can use this device to jump-start:

• Recreational Vehicles
• Motorcycles
• Lawnmowers
• Tractors
• Speedboats

This device uses modern lithium-ion battery cells. Therefore, the size is smaller than traditional options. So, you can take it around with you without putting any additional weight on your luggage.

We offer multiple CEM/ODM solutions to our clientele. These dimensions belong to one of our available solutions. Other solutions come in different dimensions. You can contact us and learn more about the different solutions that better suit your requirements.

Easy Charging Capabilities

Moreover, you will not have to worry about charging this wireless option. You can plug it in using a traditional mobile charger. However, professionals recommend against letting the battery drain completely.

The Bottom Line

GREPOW Lithium Battery Jump Starter is among the best jump starters in the market. It offers compact size and dimensions. Moreover, it comes with plenty of security features to protect your car. You can also charge other devices with this option. The price is worth it. Therefore, this can be an amazing addition to your tools on the road.

Where are jump starters made? Best Jump Starter Manufacturer in China

 

Anyone who owns a vehicle should have the right tools in the vehicle, including a spare tire, a jack, and always, a jump starter. A jumper is probably the most used vehicle tool of all time, either for yourself or for someone else in need. If you are an auto repair store, you need to sell jump starters.

Jump starters are made by specialists in the auto repair world, and they can be purchased online. The best ones are made in China as the quality is excellent, as is the pricing, and these products are sold online via their American and European stores. You can purchase the best jump starter products, directly or indirectly, retail or wholesale, or online if you choose.

Table of Contents

• How to choose a jump starter?
• What exactly is a jump starter
• The benefits of a jump starter
• Who should have a jump starter in their car
• What about direct customers
• Let‘s look at the best jump starter manufacturer

How to choose a jump starter?

Many vehicles come with jumpers when you purchase the vehicle, but as many don’t! Check-in your trunk, and if you don’t have the device, get to an auto repair shop and buy a pair. You can generally buy jump starters from any good auto shop, as well as from the Automobile Association.

We would always recommend buying good quality jump starters, and if you are in retail or wholesale, you will hopefully only sell good quality automobile equipment. A good pair of jump starters can literally last a lifetime and is not the kind of tool that one wants to replace. Buy a good one, sell good ones, and know that your jump starters are always guaranteed to work.

What exactly is a jump starter

A jump starter is a portable battery device that will start a vehicle if the battery has gone flat. It is similar to jumper cables, although jumper cables need an additional vehicle to get the battery back to life. Jumper cables are hooked from the engine of one car to another for a jump start. With a jump starter, the battery device is plugged or attached directly to the engine of the vehicle that has gone flat.

A jump starter is a compact device. It does not take up much space in the car but it has perfect power. A good jump starter is safe to store and safe to use and works quickly and efficiently. Anyone driving a car should have quick and easy access to a jump-starting device and should know how to use it.

The benefits of a jump starter

• Always get your engine started.
• Never worry about a flat battery.
• Help yourself, but help others in a crisis too.
• Stay out of dangerous situations.

Any new driver should have a jump starter available to them and know how to use it. A good quality jump starting device is easy to use, will never fail, and of course, comes with easy-to-follow instructions. If you are in the auto repair business, encourage your clients to buy jump starters. They are always valuable and useful devices.

If you are an auto repair shop, jump starters should be easy for your customers to see. Many people don’t think about owning a jump starter until they are stuck with a dead battery and are in trouble!

Who should have a jump starter in their car

• New drivers, or young drivers who may panic in an emergency
• Drivers of old vehicles
• Anyone who travels on quiet roads.
• Everyone who drives!

A jump starter has multi-benefits but always check the jump starter you have so you know what the benefits are. A good quality jump starter can:

• Provide light.  (perhaps you have to change a tire in the dark)
• Charge electronics.
• Jumpstart your vehicle or somebody else’s vehicle.

These are easy selling points!

When a customer is choosing a jump starter, encourage them to get one that is powerful. They never know what kind of car they are going to have to start. If you are selling jump starters, it’s not a bad idea to sell a good range of jump starters. Any customer is impressed if you have more than one brand. But push the good brands because a good brand means a satisfied customer.

By the way, a jump starter is not only used to start cars. They are used for motorbikes and boats too. This is important, again if you are in the retail or wholesale business for motorbikes or boats. Sell jump starters and make them appealing to your customers. They can get them out of sticky situations.

What about direct customers

You can buy jump starters online and do not have to go into a retail or wholesale auto repair store. A jump starter is a good thing to buy yourself. It is not an indulgence, it is a necessity.

A jump starter is a good thing to buy your child who is just starting out driving and has their own vehicle. It is a good thing to buy your partner! It may sound like an odd gift but a man would love a jump starter in his vehicle!  As would any woman who does not want to land up with a dead battery and likes independence.

Let‘s look at the best jump starter manufacturer

Many people think of jumper cables when they think of jumper starters, but they are two different things.

Jumper cables are composed of long electrical cables that have metal clamps on either end, enabling you to connect to another power device and discharge the power to the flat engine.

These work, of course, but you need two vehicles and are reliant on someone else helping you.

A jumper starter is a portable device where the power comes from the device to the flat battery. The jumper starter and the booster cables are one device. The device is portable. It can be kept in the car. It is light to use. And provided you get a good one, it works. Portable jumper starters have lithium-ion batteries and come in a case. They are an excellent device for all auto repair shops to sell.

There are many kinds of portable jumper starters and they come in different shapes and sizes. They also have different features, and some are much stronger than each other. As a wholesaler, you should sell a range, bearing in mind that reliability, power, and safety all come first. If you are a wholesaler or retailer, get hold of the specialists.

Grepow was founded in 1998, we have more than 20 years of battery customization and production technology. Grepow high discharge rate pouch cell is currently the best and commonly utilized for car jump starter. We offer jump starter OEM/ODM solutions as well as custom LiPo/LiFePO4 cells for Jump Starter. We can apply different kinds of battery certificates for you at your request. The UL2743, FCC, ROHS, CE and UN38.3 are available.

Grepow Jump Starters are ultra-compact, yet powerful devices with the power of lithium technology. Pound for pound, lithium provides extreme energy output at a fraction of the size. And coupled with high-end electronics and design, it produces safe and efficient performance.
Portable lithium battery jump starter packs up to 2,000A.

Please feel free to contact us for your best Jump Starter solution at info@grepow.com

How to Start Your Car in Cold Weather?

 

There are many things to pay attention to when driving in winter, such as warming up before driving in winter. However, it is difficult for many cars to start in winter, which makes it difficult for many drivers. So, what is going on if a taxi fails to start in winter? How to solve the problem of not being able to catch a car in winter? The following is an introduction to the reasons and solutions for the car not catching fire in winter.

Table of Contents

• Why Can’t the Car Start in Cold Weather?
  • 1. The battery is aging or dead
  • 2. The ignition system is malfunctioning
  • 3. The exhaust pipe freezes
  • 4. Other
• What to Do If Your Car Won’t Start in the Cold?
  • 1. Check the battery status
• 2. Change the proper oil
  • 3. Replace the spark plug in time

Why Can’t the Car Start in Cold Weather?

1. The battery is aging or dead

For the engine to run normally, several conditions must be met at the same time: fuel, air, and starting energy.
The most important thing is the starting energy. It is because the spark plug must have the energy to jump the starter, and the starter must also have the energy to run to drive the engine to do work, and their energy is electricity.
Therefore, we often encounter the failure of the car to jump the starter normally. In most cases, it is caused by the lack of electricity, that is, the battery is running out of power.
If the battery is not used for a long time, it will discharge by itself. If it is too long, the battery will be dead. Also, after the car engine stops working, which is what we call the flameout, avoid using in-car electrical appliances. Without the power supply of the engine, long-term use of electrical appliances such as car audio equipment or car headlights will consume the internal power of the battery.

2. The ignition system is malfunctioning

Due to the low intake air temperature in the cylinder, the fuel atomization in the cylinder is not good. If there is insufficient ignition energy, it is easy to cause cylinder flooding, and too much fuel will accumulate in the cylinder, exceeding the ignition limit concentration and unable to start the car.
The fire limit concentration is a range, but it is not a value. It can only start within this range, and it will not work if it is high or low.
If this problem occurs, you can check whether there are any oil stains between the spark plug electrodes. If it is cleaned and installed, it can start. The thorough method is to check the ignition system to eliminate the reasons for low ignition energy, such as spark plug electrode gap, ignition coil energy, high-voltage line status, etc.

3. The exhaust pipe freezes

This situation is more likely to happen in winter when the weather is relatively cold and the temperature is relatively low.
Those car owners whose home and work are relatively close, their cars are used less frequently, the water vapor produced by the combustion of the engine freezes on certain parts of the exhaust pipe, and the heat of short-distance driving is not enough to melt the ice. After one night, more ice has formed, and the cycle time will affect the starting and exhaust of the vehicle. Therefore, the car should not be driven, and should not be left in the corner all the time.

4. Other

In addition, the reason for the failure to start in winter may also be the addition of water or low-quality antifreeze, which caused the waterway to be frozen and even the engine was frozen and cracked, and the car’s water pump could not work and could not start.

What to Do If Your Car Won’t Start in the Cold?

1. Check the battery status

In general, the difficulty of starting a car in winter is mostly caused by battery power loss or expiration of battery life. When the battery power is insufficient, the speed is weak when starting the car, and only a click sound is heard, and the click sound will gradually become a click sound when the fire starts again. Avoid continuous ignition to avoid exhaustion of the battery.
Do not park the vehicle for a long time in winter. Generally, the vehicle should be driven out for a full circle after parking for a week, so that the battery power can be effectively replenished.
The nominal service life of the battery is generally 2-3 years, and the maintenance-free battery generally has to be replaced in 2-3 years, and the water-filled battery can even be used for 6-7 years under good maintenance. Frequently check the electrolyte capacity of the water-filled battery If the battery does not leak but the electrolyte is lacking, please replenish distilled water in time.
Of course, in this case, you can also use a jump starter. Now the jump starter can not only start the car, it is convenient to carry, but also has many auxiliary functions. For example, the jump starter produced by Grepow can not only jump starter 3.0L ~ 9.0L diesel vehicles and gas vehicles, but also Air INFLATOR, LED, multiple sockets (which can charge your mobile phones, Bluetooth headsets, etc.), and also have wireless charging functions, etc. Customized services are also provided.

2. Change the proper oil

In winter, as the temperature drops, the viscosity of the oil will increase, and the oil will flow difficultly, which will increase the resistance of the engine.
If it is difficult to start, please check whether the oil label is wrong.
Engine oil marking includes two parts: classification and viscosity specification. At present, most of the engine oils on the market use SAE and other grades to mark the viscosity. SAE is the abbreviation of “American Society of Automotive Engineers” in English. For example, in 5W-40, “W” means Winter, which refers to the low-temperature viscosity grade of the oil. The smaller the number in front of it, the better the low-temperature fluidity of the oil, and the lower the ambient temperature available for use. The better the protection of the engine during cold start. The number after the “-” sign is the high-temperature viscosity grade of the lubricating oil. The larger the number, the greater the viscosity and the higher the applicable maximum temperature.
If you originally used 5W-40 oil, you can consider switching to 5W-30 or 0W-40 oil in winter to reduce the oil viscosity and make it easier to start

3. Replace the spark plug in time

After several years of use, spark plugs are likely to cause problems such as carbon deposits, leakage, excessive gaps, and ablation, which will cause difficulties in the car ignition. Cold start and even hot engine start are difficult and often require multiple ignitions. Therefore, please check the status of the spark plug and replace it in time if you drive to a certain number of kilometers or if you feel that the vehicle is difficult to start, drive weak, jitter, increase fuel consumption, or inexplicably stalled.

What do you think you need to prepare for driving in winter? If you need a portable jump starter, please contact us as soon as possible!
Email: info@grepow.com
jump starter: https://www.grepow.com/page/jump-starter.html

What is a Battery Management System?

 

The power output depends on the battery, and thebattery management system (BMS)is the core of it. It is a system for monitoring and managing the battery. It controls the charge and discharge of the battery by collecting and calculating parameters such as voltage, current, temperature, and SOC. The process, the management system that realizes the protection of the battery and improves the overall performance of the battery is an important link between the battery and the battery application equipment.

The better BMS of foreign companies include UMC, Continental, Delphi, AVL, and FEV, etc. Now they basically follow the AUTOSAR architecture and ISO26262 functional safety requirements, with more software functions, higher reliability, and accuracy. Many domestic battery factories also have self-developed BMS products and applications, includingGrepow battery manufacturer. With the rapid development of batteries and BMS technology, they have become one of the world’s largest battery manufacturers.

BMS mainly includes three parts: hardware, bottom layer software, and application layer software.

The hardware of the battery management system (BMS)

1. Architecture

The topology of Battery Management System(BMS) hardware is divided into two types: centralized and distributed.

(1) The centralized type

The centralized type is to concentrate all the electrical components into a large board, the sampling chip channel utilization is the highest and the daisy chain communication can be adopted between the sampling chip and the main chip, the circuit design is relatively simple, the product cost is greatly reduced, but All the collection wiring harnesses will be connected to the mainboard, which poses a greater challenge to the security of the BMS, and there may also be problems in the stability of the daisy chain communication. It is more suitable for occasions where the battery pack capacity is relatively small and the module and battery pack types are relatively fixed.

(2) The Distributed type

Distributed includes a mainboard and a slave board. It is possible that a battery module is equipped with a slave board. The disadvantage of this design is that if the number of battery modules is less than 12, the sampling channel will be wasted (generally there are 12 sampling chips. Channel), or 2-3 slave boards to collect all battery modules. This structure has multiple sampling chips in one slave board. The advantages are high channel utilization, cost-saving, flexibility in system configuration, and adaptation to different capacities. Modules and battery packs of different specifications and types.

2. Function

The hardware design and specific selection should be combined with the functional requirements of the vehicle and battery system. The general functions mainly include collection functions (such as voltage, current, and temperature collection), charging port detection (CC and CC2), and charging wake-up (CP and A+) ), relay control and status diagnosis, insulation detection, high voltage interlock, collision detection, CAN communication and data storage requirements.

(1) Main controller

Process the information reported from the controller and the high-voltage controller, and at the same time judge and control the battery operating status according to the reported information, realize the BMS-related control strategy, and make the corresponding fault diagnosis and processing.

(2) High voltage controller

Collect and report the total voltage and current information of the battery in real-time, and realize timely integration through its hardware circuit, and provide accurate data for the calculation of the state of charge (SOC) and the state of health (SOH) for the motherboard. Charge detection and insulation detection function.

(3) Slave controller

Real-time collection and reporting of battery cell voltage and temperature information, feedback of the SOH and SOC of each string of cells, and a passive equalization function, effectively ensuring the consistency of cells during power use.

(4) Sampling control harness

Provide hardware support for battery information collection and information interaction between controllers, and at the same time add redundant insurance function to each voltage sampling line, effectively avoid battery short circuit caused by wiring harness or management system.

3. Communication method

There are two ways to transfer information between the sampling chip and the main chip: CAN communication and daisy chain communication. CAN communication is the most stable. However, due to the high cost of power chips and isolation circuits, daisy chain communication is actually SPI communication. The cost is very low, and the stability is relatively poor. However, as the pressure on cost control is increasing, many manufacturers are shifting to the daisy chain mode. Generally, two or more daisy chains are used to enhance communication stability.

4. Structure

BMS(Battery Management System) hardware includes power supply IC, CPU, sampling IC, high-drive IC, other IC components, isolation transformer, RTC, EEPROM, CAN module, etc. The CPU is the core component, and the functions of different models are different, and the configuration of the AUTOSAR architecture is also different. Sampling IC manufacturers mainly include Linear Technology, Maxim, Texas Instruments, etc., including collecting cell voltage, module temperature, and peripheral configuration equalization circuits.

Bottom layer software

According to the AUTOSAR architecture, it is divided into many general functional modules, which reduces the dependence on hardware, and can realize the configuration of different hardware, while the application layer software changes little. The application layer and the bottom layer need to determine the RTE interface, and consider the flexibility of DEM (fault diagnosis event management), DCM (fault diagnosis communication management), FIM (function information management), and CAN communication reserved interfaces, which are configured by the application layer.

Application layer software of the BMS

The software architecture mainly includes high and low voltage management, charging management, state estimation, balance control, and fault management, etc.

1. High and low voltage management

Generally, when the power is on normally, the VCU will wake up theBMSthrough the hardwire or 12V of the CAN signal. After the BMS completes the self-check and enters the standby mode, the VCU sends the high-voltage command, and the BMS controls the closed relay to complete the high-voltage. When the power is off, the VCU sends a high-voltage command and then disconnects and wakes up 12V. It can be awakened by CP or A+ signal when the gun is plugged in in the power-off state.

2. Charging management

(1) Slow charge

Slow charging uses an AC charging station (or 220V power supply) to convert AC to DC to charge the battery through an on-board charger. The charging station specifications are generally 16A, 32A, and 64A, and it can also be charged through a household power supply. The BMS can be awakened by CC or CP signal, but it should be ensured that it can sleep normally after charging. The AC charging process is relatively simple, and it can be developed in accordance with the detailed regulations of the national standard.

(2) Fast charge

Fast charging is to charge the battery with DC output from the DC charging pile, which can achieve 1C or even higher rate charging. Generally, 80% of the power can be charged in 45 minutes. Wake up by the auxiliary power A+ signal of the charging pile, the fast charging process in the national standard is more complicated, and there are two versions of 2011 and 2015 at the same time, and the different understanding of the technical details of the charging pile manufacturer’s unclear technical details of the national standard process also causes the vehicle charging adaptability A great challenge, so fast charging adaptability is a key indicator to measure the performance of BMS products.

3. Estimation function

(1) the State Of Power

SOP (State Of Power) mainly obtains the available charge and discharge power of the current battery through the temperature and SOC lookup table. The VCU determines how the current vehicle is used according to the transmitted power value. It is necessary to consider both the ability to release the battery and the protection of the battery performance, such as a partial power limit before reaching the cut-off voltage. Of course, this will have a certain impact on the driving experience of the whole vehicle.

(2) state of health

SOH (state of health) mainly characterizes the current state of health of the battery, which is a value between 0-100%. It is generally believed that the battery can no longer be used after it is lower than 80%. It can be expressed by the change of battery capacity or internal resistance. When using the capacity, the actual capacity of the current battery is estimated through the battery operating process data, and the ratio of the rated capacity to the rated capacity is the SOH. Accurate SOH will improve the estimation accuracy of other modules when the battery decays.

(3) the State Of Charge

SOC (State Of Charge) belongs to the BMS core control algorithm, which characterizes the current remaining capacity state, mainly through the ampere-hour integration method and EKF (Extended Kalman Filter) algorithm, combined with correction strategies (such as open-circuit voltage correction, full charge correction, charging End correction, capacity correction under different temperatures and SOH, etc.). The ampere-hour integration method is relatively reliable under the condition of ensuring the accuracy of current acquisition, but the robustness is not strong. Because of the error accumulation, it must be combined with a correction strategy. The EKF has strong robustness, but the algorithm is more complex and difficult to implement. Domestic mainstream manufacturers generally can achieve accuracy within 6% at room temperature, and it is difficult to estimate high and low temperatures and battery attenuation.

(4) the State Of Energy

SOE (State Of Energy) algorithm manufacturers do not develop much now or use a simpler algorithm, look up the table to get the ratio of the remaining energy to the maximum available energy in the current state. This function is mainly used to estimate the remaining cruising range.

4. Fault diagnosis

According to the different performance of the battery, it is divided into different fault levels, and in the case of different fault levels, the BMS and VCU will take different treatment measures, warning, limiting power, or directly cutting off the high voltage. Failures include data collection and rationality failures, electrical failures (sensors and actuators), communication failures, and battery status failures.

5. Balance control

The equalization function is to eliminate the inconsistency of the battery cells generated during battery use. According to the shortboard effect of the barrel, the cells with the worst performance during charging and discharging first reach the cut-off condition, and the other cells have some capabilities. It is not released, causing battery waste.

Equalization includes active equalization and passive equalization. Active equalization is the transfer of energy from more monomers to fewer monomers, which will not cause energy loss, but the structure is complex, the cost is high, and the requirements for electrical components are relatively high. Relatively passive The balance structure is simple and the cost is much lower, but the energy will be dissipated and wasted in the form of heat. Generally, the maximum balance current is about 100mA. Now many manufacturers can achieve better balance effects using passive balance.

The BMS(Battery Management System) control method, as the central control idea of ​​the battery, directly affects the service life of the battery, the safe operation of the electric vehicle, and the performance of the entire vehicle. It has a significant impact on battery life and determines the future of new energy vehicles. A good battery management system will greatly promote the development of new energy vehicles.

If you are interested in battery with BMS, please don’t hesitate to contact us!
Email:info@grepow.com
Click here for more information on BMS: https://www.grepow.com/page/bms-battery.html

Tips to Start a Car in Cold Weather

 There are many things to pay attention to when driving in winter, such as warming up before driving in winter. However, it is difficult for many cars to start in winter, which makes it difficult for many drivers. So, what is going on if a taxi fails to start in winter? How to solve the problem of not being able to catch a car in winter? The following is an introduction to the reasons and solutions for the car not catching fire in winter.

Table of Contents

• Why Can’t the Car Start in Cold Weather?
  • 1. The battery is aging or dead
  • 2. The ignition system is malfunctioning
  • 3. The exhaust pipe freezes
  • 4. Other
• What to Do If Your Car Won’t Start in the Cold?
  • 1. Check the battery status
• 2. Change the proper oil
  • 3. Replace the spark plug in time

Why Can’t the Car Start in Cold Weather?

1. The battery is aging or dead

For the engine to run normally, several conditions must be met at the same time: fuel, air, and starting energy.
The most important thing is the starting energy. It is because the spark plug must have the energy to jump the starter, and the starter must also have the energy to run to drive the engine to do work, and their energy is electricity.
Therefore, we often encounter the failure of the car to jump the starter normally. In most cases, it is caused by the lack of electricity, that is, the battery is running out of power.
If the battery is not used for a long time, it will discharge by itself. If it is too long, the battery will be dead. Also, after the car engine stops working, which is what we call the flameout, avoid using in-car electrical appliances. Without the power supply of the engine, long-term use of electrical appliances such as car audio equipment or car headlights will consume the internal power of the battery.

2. The ignition system is malfunctioning

Due to the low intake air temperature in the cylinder, the fuel atomization in the cylinder is not good. If there is insufficient ignition energy, it is easy to cause cylinder flooding, and too much fuel will accumulate in the cylinder, exceeding the ignition limit concentration and unable to start the car.
The fire limit concentration is a range, but it is not a value. It can only start within this range, and it will not work if it is high or low.
If this problem occurs, you can check whether there are any oil stains between the spark plug electrodes. If it is cleaned and installed, it can start. The thorough method is to check the ignition system to eliminate the reasons for low ignition energy, such as spark plug electrode gap, ignition coil energy, high-voltage line status, etc.

3. The exhaust pipe freezes

This situation is more likely to happen in winter when the weather is relatively cold and the temperature is relatively low.
Those car owners whose home and work are relatively close, their cars are used less frequently, the water vapor produced by the combustion of the engine freezes on certain parts of the exhaust pipe, and the heat of short-distance driving is not enough to melt the ice. After one night, more ice has formed, and the cycle time will affect the starting and exhaust of the vehicle. Therefore, the car should not be driven, and should not be left in the corner all the time.

4. Other

In addition, the reason for the failure to start in winter may also be the addition of water or low-quality antifreeze, which caused the waterway to be frozen and even the engine was frozen and cracked, and the car’s water pump could not work and could not start.

What to Do If Your Car Won’t Start in the Cold?

1. Check the battery status

In general, the difficulty of starting a car in winter is mostly caused by battery power loss or expiration of battery life. When the battery power is insufficient, the speed is weak when starting the car, and only a click sound is heard, and the click sound will gradually become a click sound when the fire starts again. Avoid continuous ignition to avoid exhaustion of the battery.
Do not park the vehicle for a long time in winter. Generally, the vehicle should be driven out for a full circle after parking for a week, so that the battery power can be effectively replenished.
The nominal service life of the battery is generally 2-3 years, and the maintenance-free battery generally has to be replaced in 2-3 years, and the water-filled battery can even be used for 6-7 years under good maintenance. Frequently check the electrolyte capacity of the water-filled battery If the battery does not leak but the electrolyte is lacking, please replenish distilled water in time.
Of course, in this case, you can also use a jump starter. Now the jump starter can not only start the car, it is convenient to carry, but also has many auxiliary functions. For example, the jump starter produced by Grepow can not only jump starter 3.0L ~ 9.0L diesel vehicles and gas vehicles, but also Air INFLATOR, LED, multiple sockets (which can charge your mobile phones, Bluetooth headsets, etc.), and also have wireless charging functions, etc. Customized services are also provided.

2. Change the proper oil

In winter, as the temperature drops, the viscosity of the oil will increase, and the oil will flow difficultly, which will increase the resistance of the engine.
If it is difficult to start, please check whether the oil label is wrong.
Engine oil marking includes two parts: classification and viscosity specification. At present, most of the engine oils on the market use SAE and other grades to mark the viscosity. SAE is the abbreviation of “American Society of Automotive Engineers” in English. For example, in 5W-40, “W” means Winter, which refers to the low-temperature viscosity grade of the oil. The smaller the number in front of it, the better the low-temperature fluidity of the oil, and the lower the ambient temperature available for use. The better the protection of the engine during cold start. The number after the “-” sign is the high-temperature viscosity grade of the lubricating oil. The larger the number, the greater the viscosity and the higher the applicable maximum temperature.
If you originally used 5W-40 oil, you can consider switching to 5W-30 or 0W-40 oil in winter to reduce the oil viscosity and make it easier to start

3. Replace the spark plug in time

After several years of use, spark plugs are likely to cause problems such as carbon deposits, leakage, excessive gaps, and ablation, which will cause difficulties in the car ignition. Cold start and even hot engine start are difficult and often require multiple ignitions. Therefore, please check the status of the spark plug and replace it in time if you drive to a certain number of kilometers or if you feel that the vehicle is difficult to start, drive weak, jitter, increase fuel consumption, or inexplicably stalled.

What do you think you need to prepare for driving in winter? If you need a portable jump starter, please contact us as soon as possible!
Email: info@grepow.com
jump starter: https://www.grepow.com/page/jump-starter.html

the lithium battery charging process

 

Lithium-ion batteries generally use lithium alloy metal oxide as the positive electrode material, graphite as the negative electrode material, and the non-aqueous electrolyte. Almost all mobile phones we use are lithium batteries. At present, most of the popular electric vehicles on the market are powered bylithium iron phosphate batteries. How do the lithium batteries charge and discharge?

First, let’s take a look at the structure of lithium batteries. Lithium batteries are generally composed of a positive electrode, negative electrode, electrolyte, and separator. Our common mobile phone lithium batteries are square in daily life. The batteries in electric vehicle battery packs are generally round. There are laminated and winding types. In addition to the positive and negative electrodes of the four contacts on a common mobile phone battery, the remaining contacts are simply used to detect (or monitor) various information of the mobile phone battery.

The positive electrode of lithium battery is generally lithium manganese oxide or lithium cobalt oxide, and lithium nickel cobalt manganese oxide materials. Electric bicycles generally use lithium nickel cobalt manganese oxide (commonly known as ternary) or ternary + a small amount of lithium manganate; the negative electrode is generally active The material is graphite or carbon with a similar graphite structure. The separator between the positive electrode and the negative electrode is a specially formed polymer film with a pore size that satisfies good ion permeability and also has electronic insulation, which allows lithium ions to pass freely. And electrons cannot pass. The electrolyte plays a role in transporting charges between the positive and negative electrodes. Generally, it is a carbonate-based solvent in which lithium hexafluorophosphate is dissolved, and a gel electrolyte is used for polymers.

When alithium batteryis charged, the positive electrode releases lithium ions, and the lithium ions pass through the diaphragm through the electrolyte, move to the negative electrode, and combine with the electrons of the abdominal muscles. At this time, the chemical reaction of the positive electrode is LiCoO2=Li(1-x)CoO2 +xLi++xe- (electron), the chemical reaction on the negative electrode is 6C+xLi++xe- = LixC6. When a lithium battery is discharged, the movement of lithium ions is exactly the opposite. Lithium ions enter the electrolyte from the negative electrode, pass through the diaphragm and finally reach the positive electrode, while the electrons travel from the negative electrode to the positive electrode by the external circuit (the direction of electron movement is opposite to the current direction), and the positive electrode This process can make the lithium battery output electric energy.

The charging process of lithium batteries is generally divided into three stages: trickle charging, constant current charging, and constant voltage charging. Take a mobile phone battery as an example. When charging starts, the internal charging management chip first detects the voltage of the battery to be charged. If the voltage is lower than 3V, pre-charge is required. The charging current is 1/10 of the set current and the voltage rises to 3V. , Into the standard charging process. The standard charging process is constant current charging with the set current, when the battery voltage rises to 4.20V, change to constant voltage charging, and keep the charging voltage at 4.20V. At this time, the charging current gradually decreases, and when the current drops to 1/10 of the set charging current, charging ends. Generally, the output voltage of a mobile phone charger is 5V, and the charging management chip inside the mobile phone is responsible for reducing the voltage to 3.7V suitable for the mobile phone battery.

Lithium batteries have relatively high energy. It has a high storage energy density, reaching 460-600Wh/kg, which is about 6-7 times that of lead-acid batteries; long service life, generally up to six years; high power endurance; low self-discharge rate. The applications in daily life are becoming wider and wider.

High-voltage Lithium Batteries Development

 

A high-voltage battery refers to a battery whose battery voltage is relatively higher than the ordinary battery that we use. With the development of global diversification, our lives are constantly changing, including the various electronic products we come into know. Then you must not know some of the components of these products, such as high-voltage lithium-ion batteries.

With the continuous improvement of the requirements for the capacity of lithium-ion batteries by electrical equipment, people have higher and higher expectations for the improvement of the energy density of lithium-ion batteries. In particular, various portable devices such as smart-phones, tablet computers, and notebook computers have put forward higher requirements for lithium-ion batteries with small size and long standby time. Also in other electrical equipment, such as energy storage equipment, power tools, electric vehicles, etc., are constantly developing lithium-ion batteries with lighter weight, smaller size, higher output voltage, and power density, so the development of high energy density Lithium-ion batteries are an important research and development direction in the lithium battery industry.

A high-voltage battery refers to a battery whose battery voltage is relatively higher than the ordinary battery. According to battery cells and battery packs, it can be divided into two types. The high-voltage battery is defined from the voltage of the battery cell. This aspect is mainly for lithium batteries. At present, the types of lithium battery cells mainly include high-voltage lithium battery cells and low-voltage lithium battery cells.

At present, lithium cobalt oxide has been widely studied and applied as a high-voltage anode material. The structure is non-nafeo2 type, which is more suitable for lithium-ion insertion and ejection. The theoretical energy density of lithium cobalt oxide is 274mAh/g, the production process is simple, the electrochemical performance is stable, and the market occupancy is high. In practical applications, only part of lithium ions can be reversibly inserted and ejected. The actual energy density is about 167mAh/g (working voltage is 4.35v). Increasing the working voltage can significantly increase the energy density. For example, increasing the operating voltage from 4.2v to 4.35v can increase the energy density by about 16%.

High-voltage lithium battery cells have higher energy density and lower safety performance than low-voltage batteries, but their discharge platform is relatively high. Under the same capacity, high-voltage batteries are lighter than low-voltage batteries in terms of volume and weight.

With the increase in voltage, high-voltage lithium-ion batteries will reduce certain safety performance during use, so they have not been used in batches in power vehicles. At present, the battery cathode materials used in power vehicles are mainly ternary materials and lithium iron phosphate. To increase the energy density to meet the demand, generally choose 811NCM and NCA and other high nickel cathode materials, high capacity silicon-carbon anode or improve battery space utilization and other methods to improve its energy density and endurance.

High current and high voltage make lithium cobalt oxide materials used in high-energy-density batteries, such as high-end mobile phone battery manufacturers’ increasingly high battery performance requirements, which are mainly reflected in the demand for higher energy density, such as carbon requirements for 4.35V battery cathodes The energy density is about 660wh/L, and the 4.4V battery has reached about 740wh/L. This requires the anode material to have a higher compaction density, a higher empty volume, and the structure of the material under high pressure and high pressure has a better stability. However, lithium cobalt oxide electrode materials have shortcomings such as scarcity of cobalt resources, high prices, and certain toxicity of cobalt ions, which limit its wide application in power lithium batteries.

In terms of discharge rate of high-voltage and low-voltage batteries, high-voltage lithium batteries have a higher discharge rate and stronger power than low-voltage lithium batteries. Therefore, in theory, a high-voltage battery should be more suitable for use in products and equipment that require high-rate discharge. , In order to better exert its advantages.

In the process of research and design, there must be problems of one kind or another. This requires our scientific research workers to constantly sum up the experience in the design process in order to promote continuous product innovation.

If you want to know more about high-voltage batteries, please check https://www.grepow.com/page/high-voltage-battery.html

For customized high voltage batteries, please contact us directly at info@grepow.com