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2、 Intelligent lithium battery protection board intelligent BMS

The structure of intelligent lithium batteries is mainly divided into several parts: lithium cells, battery protection plates (BMS), battery fixing brackets, and wires.

Intelligent lithium batteries are a collective term, as the types and brands of lithium batteries used vary in quality and price. This is the main reason why we see different prices for intelligent lithium batteries in the market. There are many types of battery cells used for intelligent lithium batteries, including polymer lithium cells, iron phosphate lithium cells, cobalt acid lithium cells, high nickel lithium cells, ternary lithium cells, etc. According to the properties of similar battery cells, the same type of battery cells can be divided into low-temperature cells, high rate discharge cells, wide temperature cells, and conventional discharge cells.

What are the functions of intelligent lithium batteries? It mainly depends on the functions of the selected battery protection board (BMS), so what functions do intelligent lithium batteries include?

Functions included in lithium batteries:

1) Energy storage lithium battery BMS has analog measurement function: it can measure individual voltage and temperature in real-time, and measure parameters such as battery pack terminal voltage and current. Ensure the safe, reliable, and stable operation of batteries, ensure the service life requirements of individual batteries, and meet the optimization and control requirements for the operation of individual batteries and battery packs.

2) The lithium battery BMS has online SOC diagnosis: on the basis of real-time data acquisition, an expert mathematical analysis diagnostic model is established to measure the SOC of the battery's remaining capacity online. At the same time, intelligently correct the SOC prediction based on the discharge current and environmental temperature of the battery, providing a more suitable remaining capacity and reliable usage time of the battery under changing loads.

3) Battery system operation alarm function: It can display and report alarm information when there are overvoltage, undervoltage, overcurrent, high temperature, low temperature, communication abnormalities, BMS abnormalities, and other states during battery system operation.

4) Battery system protection function: For abnormal faults such as severe overvoltage, undervoltage, overcurrent (short circuit) that may occur during operation, the high-voltage control unit is used.

5) The energy storage lithium-ion battery BMS has communication function: the system can communicate with PCS through CAN, and the communication protocol supports the Encore PCS communication protocol. The communication with the backend adopts RS485 mode, and the communication protocol is the standard Modbus protocol.

6) Thermal management function: Strictly monitor the operating temperature of the battery pack. If the temperature is above or below the protection value, the battery management system automatically cuts off the battery circuit to ensure system safety.

7) The energy storage lithium battery BMS has self diagnosis and fault tolerance functions:

8) Equalization function: Passive equalization, with a maximum equalizing current of 200mA.

9) Operation parameter setting function;

10) Local operation status display function;

11) The energy storage lithium battery BMS has event and log data recording functions:

The above is a general introduction to the knowledge related to smart lithium batteries. Through these introductions, it will be helpful for friends who want to learn about smart lithium batteries or want to purchase batteries.

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