The invention discloses a battery charging circuit and method, and belongs to the technical field of charging control. A midpoint of each phase of bridge arm in a three-phase bridge arm circuit is connected with a coil of a corresponding motor, a first end of an electric control switch circuit is connected with a positive electrode of external charging equipment, and a second end of the electric control switch circuit is connected with a positive electrode of the three-phase bridge arm circuit. The third end of the electric control switch circuit is connected to the midpoint of a corresponding bridge arm in the three-phase bridge arm circuit, the fourth end of the electric control switch circuit is connected with the negative electrode of the vehicle-mounted battery and the negative electrode of the three-phase bridge arm circuit, and the control unit sequentially controls connection and disconnection of the electric control switch circuit and the three-phase bridge arm circuit according to the rotor angle of the motor. According to the invention, the appropriate electric control switch circuit and the three-phase bridge arm circuit are controlled to be correspondingly conducted according to the rotor angle of the motor, so that the cost of boosting equipment and the jitter at the beginning and the end of charging are reduced, the boosting function is realized by using the motor coil, the cost of the boosting equipment is reduced, and the charging experience of a user is improved.

    本发明公开了一种电池充电电路及方法,属于充电控制技术领域。本发明三相桥臂电路中每一相桥臂的中点与对应的电机的线圈连接,电控开关电路的第一端与外部充电设备的正极连接,电控开关电路的第二端与三相桥臂电路的正极连接,电控开关电路的第三端连接于三相桥臂电路中对应的桥臂的中点,电控开关电路的第四端分别与车载电池的负极及三相桥臂电路的负极连接,控制单元根据电机的转子角度依次控制电控开关电路及三相桥臂电路的导通与关断,本发明通过根据电机的转子角度控制合适电控开关电路及三相桥臂电路对应导通,减少升压设备成本及充电开始和结束时的抖动,利用电机线圈实现升压功能,减少升压设备成本,提升用户充电时的体验。


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    Title :

    Battery charging circuit and method


    Additional title:

    电池充电电路及方法


    Contributors:
    GU HAO (author) / LIU ZE (author) / TANG QIANLONG (author)

    Publication date :

    2022-01-28


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

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



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