How To Match Suitable Li-ion BMS

How To Match a Suitable Lithium Battery Protection Board (BMS)?

I am at the beginning of my project and need to choose the right circuit board for lithium battery protection. Can you provide me a suggestion?

The popularity of lithium-ion batteries has led many people to choose lithium batteries. However, lithium batteries can not be used without a suitable battery management system, to choose the right lithium battery protection plate, you must remember the following points:

1. Confirm the voltage value

After we determine the type of battery, we also need to determine the voltage value of the battery pack according to the number of strings of batteries, at this time, we should pay special attention to the different types of lithium batteries, they correspond to the standard voltage of the battery is different.
Battery pack voltage = single string battery voltage * number of strings, according to the number of strings to choose the appropriate voltage protection plate.

2.Confirm the current value

Current value is also quite an important part. Lithium battery application scenarios are rich, different application scenarios choose lithium battery protection board current is also very different. In general, when it comes to two-wheeled electric vehicles, the chosen capacity often exceeds more than twice the theoretical value. For three-wheeled electric vehicles, the chosen capacity usually exceeds more than three times the theoretical value. Meanwhile, for four-wheeled low-speed vehicles, capacities of about 3.5 times the theoretical value are usually selected. For inverters and energy storage tablets, 1.2 times is chosen. Optional electric vehicle protection board, is the easiest way to directly refer to the electric vehicle controller current limit, the current value of the protection board must be greater than the current limit value of the controller.

3. Confirm the battery multiplier

Battery discharge is 1C, you protection board selected very large, the load power is higher than 1C or more, it is also easy to cause damage to the battery.

More: How do you choose the right LiFePO4 Smart BMS for your specific application?And Let me give you an introduction and demonstration of connecting your BMS to a lithium battery pack

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