LITHIUM ION BATTERY PACK PRODUCTION PROCESS

LITHIUM ION BATTERY PACK PRODUCTION PROCESS 

Lithium batteries are widely used, ranging from civilian digital and communication products to industrial equipment to special equipment. Different products require different voltages and capacities. Therefore, there are many cases where lithium-ion batteries are used in series and parallel. The application battery formed by protecting the circuit, casing, and output is called PACK. PACK can be a single battery, such as mobile phone batteries, digital camera batteries, MP3, MP4 batteries, etc., or a series-parallel combination battery, such as laptop batteries, medical equipment batteries, communication power supplies, electric vehicle batteries, backup power supplies, etc.

1. Lithium battery PACK composition:

PACK includes battery pack, protective board, outer packaging or shell, output (including connector), key switch, power indicator, and auxiliary materials such as EVA, barley paper, and plastic bracket to form PACK. The external characteristics of PACK are determined by the application. There are many types of PACK. 

2. Production process of lithium battery PACK:

3. Features of lithium battery PACK 

It has complete functions and can be directly applied. 

Variety of species. There are multiple PACKs that can achieve the same application requirement. 

The battery pack PACK requires the battery to have a high degree of consistency (capacity, internal resistance, voltage, discharge curve, life). 

The cycle life of the battery pack PACK is lower than the cycle life of a single battery. 

Use under limited conditions (including charging, discharging current, charging method, temperature, humidity conditions, vibration, force level, etc.) 

The PACK protection board of the lithium battery pack requires a charge equalization function. 

High-voltage, high-current battery packs (such as electric vehicle batteries, energy storage systems) require communication buses such as battery management system (BMS), CAN, and RS485. 

The battery pack PACK has higher requirements for the charger, and some requirements communicate with the BMS. The purpose is to make each battery work normally, fully utilize the energy stored in the battery, and ensure safe and reliable use. 

4. Design of lithium battery PACK 

Fully understand the use requirements, such as the application environment (temperature, humidity, vibration, salt spray, etc.), use time, charging, discharging methods and electrical parameters, output methods, life requirements, etc. 

Select qualified batteries and protection circuit boards according to the requirements of use, 

Meet the requirements of size and weight. 

The packaging is reliable and meets the requirements. 

The production process is simplified. 

The plan is optimized. 

Minimize costs. 

The detection is easy to implement. 

5. Precautions for the use of lithium batteries! ! ! 

Do not put it into fire or use it near a heat source! ! ! 

Do not use metal to directly connect the output positive and negative poles together. 

Do not use outside the battery temperature range. 

Do not squeeze the battery with force. 

Use a dedicated charger or charge according to the correct method. 

Please recharge the battery every three months when the battery is shelved. And place it at the storage temperature.

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