The invention relates to the technical field of new energy automobiles, and discloses a lithium battery pack for a new energy automobile and a use method thereof. The lithium battery pack comprises single batteries, wherein heating plates are fixedly installed on the two sides and the bottom part of each single battery, the heating plates are electrically connected with temperature control switches close to the negative electrodes of the single batteries, the heating plates and the temperature control switches are connected in series and electrically connected with negative electrodes of the single batteries, and an electric box is fixedly installed on the back faces of the single batteries. According to the lithium battery pack for the new energy automobile, the internal resistance of the battery is large and the resistance of the heating plates is smaller than that of the battery under a low-temperature condition, so that current passes through the heating plates and can be automatically disconnected after reaching a specified temperature, in a slow charging process when the temperature is low, the temperature of the heating plates is firstly increased to heat the single batteries, the mobility of electrolyte in the single batteries is improved, so that the ion mobility under the low-temperature condition is enhanced, the charging efficiency of the single batteries is improved, and the single batteries obtain the capacitance at a proper temperature.

    本发明涉及新能源汽车技术领域,且公开了一种新能源汽车用锂电池组及其使用方法,包括单体电池,所述单体电池的两侧和底部均固定安装有加热板,所述加热板靠近单体电池负极电连接有温控开关,所述加热板和温控开关串联且与单体电池负极电连接,所述单体电池的背面固定安装有电箱。该新能源汽车用锂电池组,通过在低温条件下电池内部电阻大而加热板的电阻较电池电阻小,使得电流从加热板处通过并能在到达指定温度后自动断路,使得温度较低时进行较慢充电的过程中,先使加热板温度提高加热单体电池,提高单体电池内部电解液的流动性,使得低温条件下离子流动性增强,提高单体电池的充电效率,使得单体电池获得适宜温度下的电容量。


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    Title :

    Lithium battery pack for new energy automobile and use method of lithium battery pack


    Additional title:

    一种新能源汽车用锂电池组及其使用方法


    Contributors:

    Publication date :

    2021-11-26


    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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