The present invention provides an automotive battery heater. A vehicle power system includes a traction battery, an electric machine configured to receive power from the traction battery, a switching circuitry connected between the traction battery and the electric machine, and including pairs of switches connected in parallel, and a capacitor connected with and between the pairs such that the capacitor shares a common terminal with each of the switches of the pairs, and a controller configured to responsive to a temperature of the traction battery being less than a first threshold, activate the switches of each of the pairs in complementary fashion at a switching frequency corresponding to a resonant frequency defined by a capacitance of the capacitor and an inductance of the traction battery to cause an AC current to circulate between the traction battery and the switching circuitry to generate heat within the traction battery, and responsive to the temperature exceeding a second threshold, deactivate the switches.

    本公开提供“汽车电池加热器”。一种车辆电力系统包括:牵引电池;电机,其被配置为从所述牵引电池接收电力;开关电路,其连接在所述牵引电池和所述电机之间并且包括并联连接的成对的开关和电容器,所述电容器与所述对连接并且在所述对之间,使得所述电容器与所述对的所述开关中的每一个共用公共端子;以及控制器,其被配置为响应于所述牵引电池的温度小于第一阈值,在对应于由所述电容器的电容和所述牵引电池的电感所限定的谐振频率的开关频率下以互补方式激活所述对中每一对的所述开关,以致使AC电流在所述牵引电池和所述开关电路之间循环以在所述牵引电池内生成热量,以及响应于所述温度超过第二阈值,停用所述开关。


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    Title :

    AUTOMOTIVE BATTERY HEATER


    Additional title:

    汽车电池加热器


    Contributors:
    GE BAOMING (author) / CHEN LIHUA (author) / CURUVIJA BORIS (author) / XU FAN (author)

    Publication date :

    2021-07-16


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60L PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES , Antrieb von elektrisch angetriebenen Fahrzeugen / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung



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