Use and maintenance of lithium battery

　　The use and maintenance process shall be controlled to monitor the battery in real time. The consistency screening of the battery during the assembly can ensure the consistency of the battery in the early use. When the battery is monitored in real time during use, the consistency problem during use can be observed in real time. However, when the consistency is poor, the monitoring circuit will cut off the charging and discharging circuit, so the performance will be reduced. The balance between the two must be found. The battery with extreme parameters can also be adjusted or replaced in a timely manner through real-time monitoring to ensure that the inconsistency of the battery pack will not expand over time.

　　Introduce a balanced management system. The battery is intelligently managed by adopting appropriate equalization strategy and equalization circuit. At present, common equalization strategies include external voltage based equalization strategy, SOC based equalization strategy and capacity based equalization strategy. The equalization circuit can be divided into passive equalization and active equalization according to the mode of energy consumption. Active equalization, which can realize the lossless energy flow between batteries, is a research hotspot at home and abroad. The commonly used methods in active equalization include battery bypass method, switched capacitor method, switched inductance method, DC/DC conversion method, etc.

　　Thermal management of the battery. In addition to keeping the working temperature of the battery pack within the optimal range, the thermal management of the battery should also try to ensure the consistency of the temperature conditions among the batteries, so as to effectively ensure the performance consistency among the batteries. Adopt reasonable control strategy. When the output power is allowed, the battery discharge depth shall be reduced as far as possible, and the overcharge of the battery shall be avoided to extend the cycle life of the battery pack. Strengthen the maintenance of the battery pack. The battery pack shall be charged with low current maintenance at a certain interval, and it shall be cleaned.

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