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Lithium ion batteries are widely used, ranging from civilian digital and communication products to industrial equipment and special equipment, all of which are used in batches. Different products require different voltages and capacities, so there are many situations where lithium-ion batteries are used in series and parallel. The application battery formed by adding protective circuits, outer shells, and outputs to lithium-ion batteries is called a PACK. PACK can be a single battery, such as a mobile phone battery, digital camera battery, MP3, MP4 battery, etc., or a series parallel combination battery, such as a laptop battery, medical equipment battery, communication power supply, electric vehicle battery, backup power supply, etc.

1. Lithium battery pack composition:

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

2. Production process of lithium battery PACK:

3. The characteristics of lithium battery PACK

It has complete functions and can be directly applied.

Diversity of species. There are multiple PACKs that can be implemented for the same application requirement.

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

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

Used under limited conditions (including charging and discharging currents, charging methods, temperature and humidity conditions, vibration conditions, force levels, etc.)

The lithium battery pack PACK protection board requires a charging balance function.

High voltage and high current battery packs (such as electric vehicle batteries and energy storage systems) require the installation of a Battery Management System (BMS), CAN, RS485, and other communication buses.

The battery pack PACK has high requirements for chargers, and some requirements are communicated with BMS to ensure that each battery operates normally, fully utilizes the energy stored in the battery, and ensures safe and reliable use.

4. Design of Lithium Battery PACK

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

Select qualified batteries and protective circuit boards according to usage requirements,

Meet the requirements of size and weight.

The packaging is reliable and meets the requirements.

Simplify the production process.

Plan optimization.

Minimize costs.

Detection is easy to implement.

5. Precautions for using lithium batteries!!!

Do not put into fire or use near heat sources!!!

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

Do not use beyond the battery temperature range.

Do not use force to squeeze the battery.

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

Please recharge the battery every three months when it is idle. And place according to the storage temperature.

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