The invention discloses a composite energy storage system for an electric vehicle. The composite energy storage system comprises a power supply module and a charging module, the power supply module comprises a first-stage power supply unit, a second-stage power supply unit and a third-stage power supply unit; the charging module comprises a charging control panel, a first-stage charging circuit, a second-stage charging circuit and a third-stage charging circuit; the total power storage capacity ratio of the lithium iron phosphate battery pack, the lithium air battery pack and the lithium battery pack is 12: 5: 3, and the distribution method comprises the following steps: S1, when the electric vehicle is started, the lithium iron phosphate battery pack starts to discharge to supply power to a motor of the electric vehicle; s2, acceleration is carried out through a lithium air battery pack and a lithium battery pack array; and S3, the lithium air battery pack independently supplies power to electric equipment except the motor in the electric automobile. According to the lithium iron phosphate battery pack, the lithium air battery pack and the lithium battery pack array are accelerated under the condition that the power supply power is not changed, the service life of the battery is long, the electric loss is low, and the controllability is high.

    本发明公开了一种电动汽车复合储能系统,包括供电模块和充电模块;所述供电模块包括一级供电单元、二级供电单元和三级供电单元;所述充电模块包括充电控制板、一级充电电路、二级充电电路和三级充电电路;所述磷酸铁锂电池组、锂空气电池组和锂电池组的蓄电总容量比为12:5:3,分配方法如下:S1:在电动汽车启动时,磷酸铁锂电池组将开始放电,给电动汽车电机供电;S2:通过锂空气电池组和锂电池组阵列进行加速;S3:所述锂空气电池组独立给电动汽车内用除电机以外的用电设备供电。本发明磷酸铁锂电池组将保持不改变供电功率下,锂空气电池组和锂电池组阵列进行加速,电池使用寿命长,电损耗低,可控性高。


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    Title :

    Electric vehicle composite energy storage system and energy distribution method


    Additional title:

    一种电动汽车复合储能系统及能量分配方法


    Contributors:

    Publication date :

    2025-02-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen



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