The invention discloses a battery heating strategy optimization method based on charging capacity of a battery and a charging pile. The method comprises the steps: obtaining an output current I2 of the charging pile when a charging gun of the charging pile is connected with a power battery system; acquiring the temperature and the SOC value of a power battery in real time, and inquiring a direct current charging rate table to obtain the maximum allowable charging current value I1 of the power battery; comparing the I2 and the I1, and if the I2 is larger than or equal to the I1, inquiring the direct-current charging rate table and taking the lowest temperature corresponding to the maximum allowable charging current of the power battery as battery heating target temperature; and if the I2 issmaller than the I1, inquiring the direct-current charging rate table and taking the lowest temperature corresponding to the I2 as battery heating target temperature. Low-current charging can be continued, and the effects of consumption reduction and heat preservation can be achieved due to heating of the battery in the charging process, so that a battery heating strategy can be optimized, the purposes of reducing energy consumption and saving resource allocation are achieved, and the method is particularly suitable for a scene of night charging in a cold region.
本发明公开了一种基于电池与充电桩充电能力的电池加热策略优化方法,包括:当充电桩的充电枪与动力电池系统相连时,获取充电桩的输出电流I2;实时获取动力电池的温度和SOC值,查询直流充电倍率表得到动力电池最大允许充电电流值I1;比较I2和I1的大小,若I2大于等于I1,则查询直流充电倍率表将动力电池最大允许充电电流对应的最低温度作为电池加热目标温度;若I2小于I1,则查询直流充电倍率表将I2对应的最低温度作为电池加热目标温度。本发明可以持续小电流充电,由于充电过程电池发热,能够起到降耗加保温的效果,从而可以对电池加热策略进行优化,达到降低能耗,节约资源配置的目的,尤其适合寒区夜间充电的场景。
Battery heating strategy optimization method based on charging capacity of battery and charging pile
基于电池与充电桩充电能力的电池加热策略优化方法
2020-12-11
Patent
Electronic Resource
Chinese
IPC: | B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H01M Verfahren oder Mittel, z.B. Batterien, für die direkte Umwandlung von chemischer in elektrische Energie , PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY |
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