① The working status of the monitoring side of the single battery, such as detecting the voltage, charging and discharge current, and the ambient temperature of the battery pack, etc.;

　　② Protect the battery to avoid shortening battery life and battery damage under extreme conditions.

　　(2) The main functions of the battery management system

　　① Overwriting protection

　　When the charging voltage of the single battery exceeds the allowable value, the charging is stopped immediately, and the connection between the disconnection of the charging equipment and the battery pack:

　　② Pass the alarm

　　When the discharge voltage of the single battery is lower than the warning value, a message is issued;

　　② Over time protection

　　When the discharge voltage of the single battery is lower than the protection value, the discharge is stopped immediately, and the connection between the power consumption equipment and the battery pack is disconnected, and the alarm prompt is accompanied by the alarm;

　　④ Overcurrent alarm

　　When the battery pack or output current exceeds the warning value, the alarm prompt is issued;

　　③ Short -circuit protection

　　When the battery pack occurs short circuit, stop discharge immediately, disconnect the connection between the power consumption equipment and the battery pack, and accompany the repayment prompt;

　　⑥ Temperature alarm

　　When the battery temperature or ambient temperature exceeds the warning value, the alarm prompt is issued:

　　⑥ Temperature alarm

　　When the battery temperature or ambient temperature exceeds the warning value, alarm prompt.

　　⑦The over -temperature protection

　　When the environmental temperature or the internal temperature of the battery pack exceeds the protection value, immediately disconnect the charging or the connection between the power consumption equipment and the battery pack, and is accompanied by alarm prompt. After the ambient temperature or the internal temperature of the battery pack is restored to the allowable value, the function of battery management can be restored by manual or automatic recovery, but it does not affect the battery discharge function;

　　8. Estimate the SOC SoC (Stateof Charge, the battery's load state), that is, the battery remaining power. Maintain SOC in a reasonable range. To prevent damage to batteries due to over -charging or overdoing the battery, the remaining capacity of the battery is forecast at any time;

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