The invention discloses a voltage transformation circuit, a charging pile and a control method of the charging pile. The voltage transformation circuit comprises a transformer and a change-over switch module, the transformer comprises a primary winding, a secondary winding and a free winding; the switch module comprises a primary side change-over switch and a secondary side change-over switch; the first end of the primary winding is used for being connected with the inverter circuit, and the second end of the primary winding is connected with the free winding or the inverter circuit through the primary change-over switch; the first end of the secondary winding is used for being connected with the rectifying circuit, and the second end of the secondary winding is connected with the free winding or the rectifying circuit through the secondary change-over switch; wherein the free winding is connected with the primary winding in series or the free winding is connected with the secondary winding in series by adjusting the connection state of the primary selector switch and the secondary selector switch, so that the turn ratio of the transformer is changed. In the embodiment of the invention, by controlling the state of the switch, the turn ratio of the primary side to the secondary side of the transformer is bidirectionally changed in a low-cost manner, and the output voltage range of the transformation circuit is expanded.

    本申请公开了一种变压电路、充电桩和充电桩的控制方法。其中,变压电路包括:变压器和切换开关模组;变压器包括原边绕组、副边绕组和游离绕组;开关模组包括原边切换开关和副边切换开关;原边绕组的第一端用于连接逆变电路,原边绕组的第二端通过原边切换开关连接游离绕组或逆变电路;副边绕组的第一端用于连接整流电路,副边绕组的第二端通过副边切换开关连接游离绕组或整流电路;其中,通过调节原边切换开关和副边切换开关的连接状态,使游离绕组与原边绕组串联,或,使游离绕组与副边绕组串联,以改变变压器的匝比。本申请实施例中,通过控制开关的状态,以低成本的方式双向改变变压器的原副边匝比,扩大变压电路的输出电压范围。


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    Title :

    Voltage transformation circuit, charging pile and control method of charging pile


    Additional title:

    一种变压电路、充电桩和充电桩的控制方法


    Contributors:
    YAN HAO (author) / WU ZIQIANG (author) / ZHU WANLONG (author)

    Publication date :

    2024-09-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    H02M APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS , Anlagen zur Umformung von Wechselstrom in Wechselstrom, von Wechselstrom in Gleichstrom oder umgekehrt, oder von Gleichstrom in Gleichstrom und zur Verwendung in Netzen oder ähnlichen Stromversorgungssystemen / 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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