The invention provides a vehicle power battery preheating device and a control method thereof, and the vehicle power battery preheating device comprises a first power battery pack, a second power battery pack, a direct current bus capacitor, a driving motor, a motor driving inverter, a current sensor and a battery preheating control system, the direct current side of the motor driving inverter isconnected with the direct current bus capacitor, the alternating current output side of the motor driving inverter is connected with a stator winding of the driving motor; the first power battery packand the second power battery pack are connected in series to form a power battery pack; the power battery pack is connected in parallel with the DC bus capacitor; the power battery pack is connectedwith a one-phase stator winding of the driving motor through a heating contactor; at least one temperature sensor is arranged at a temperature sampling point of the power battery pack; and the currentsensor is arranged at the alternating-current output end of the motor-driven inverter. According to the invention, the problems of low heating rate, poor effect, high energy consumption, high cost, large volume and the like of the existing battery heating equipment in a low-temperature environment are solved, and the self energy of the battery can be used for heating.

    本发明提供了一种车用动力电池预热装置及其控制方法,包括第一动力电池组、第二动力电池组、直流母线电容、驱动电机、电机驱动逆变器、电流传感器以及电池预热控制系统,电机驱动逆变器直流侧与直流母线电容连接,电机驱动逆变器交流输出侧与驱动电机的定子绕组连接;第一动力电池组、第二动力电池组串联,组成动力电池组;动力电池组与直流母线电容并联;动力电池组与驱动电机一相定子绕组通过加热接触器连接;动力电池组的温度采样点上设置有至少一个温度传感器;电流传感器设于电机驱动逆变器的交流输出端。本发明解决了低温环境下现有电池加热设备存在的加热速率慢、效果差、能耗高、成本高、体积大等问题,且能够使用电池自身能量进行加热。


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    Title :

    Vehicle power battery preheating device and control method thereof


    Additional title:

    车用动力电池预热装置及其控制方法


    Contributors:
    ZHU CHONG (author) / ZHANG XI (author) / GUO BANGJUN (author)

    Publication date :

    2020-12-18


    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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