The invention discloses a multi-mode cooling integrated power lithium battery pack which comprises a battery box body and a plurality of lithium battery units arranged in the battery box body; a liquid inlet header pipe and a liquid outlet header pipe are horizontally arranged above the lithium battery units in a penetrating mode, and a liquid cooling device is arranged between every two adjacent lithium battery units in a clamped mode. The plurality of liquid cooling devices are respectively communicated with the liquid inlet header pipe and the liquid outlet header pipe to form a liquid cooling channel, and an air heat dissipation channel is arranged at the bottom of the battery box body. Compared with the prior art, the multi-mode cooling integrated power lithium battery pack provided by the invention not only is heat-insulated and waterproof, but also takes away heat generated by discharging of the battery pack in a liquid cooling and air cooling combined manner, so that the working temperature of the lithium battery unit is adjusted, and the use safety is improved; according to the lithium battery unit, the contribution rate of lithium ions to conductivity and the migration rate of the lithium ions in electrolyte and an SEI film are improved, the cycle performance and high-rate charge-discharge performance of the battery are improved, and the capacity and power of the lithium ion battery are improved.

    本发明公开一种多模冷却一体化动力锂电池组,包括电池箱体和设置在电池箱体中的多个锂电池单元,所述锂电池单元的上方水平穿设有进液总管和出液总管,相邻的两个锂电池单元之间夹设有液冷装置,多个液冷装置分别与进液总管和出液总管连通形成液冷通道,电池箱体的底部设有空气散热通道。与现有技术相比,本发明提供的多模冷却一体化动力锂电池组不仅隔热、防水,还采用液冷和空冷结合的方式带走电池组因放电产生的热量,完成对锂电池单元工作温度的调节,提高使用安全性;锂电池单元提高了锂离子对电导率的贡献率和锂离子在电解液及SEI膜中的迁移速率,改善了电池循环性能以及高倍率充放性能,提高了锂离子电池的容量和功率。


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    Title :

    Multi-mode cooling integrated power lithium battery pack


    Additional title:

    一种多模冷却一体化动力锂电池组


    Contributors:
    YAN XUEQING (author) / LIU YU (author) / QIAN JUN (author)

    Publication date :

    2021-10-22


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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