The invention provides a bidirectional direct current converter, a direct current charging pile and an energy storage system. The bidirectional DC converter comprises a first end; a second end; the buck-boost circuit is connected with the first end and comprises a first half-bridge circuit, a second half-bridge circuit and a first inductor, and the first half-bridge circuit comprises a first switching tube and a second switching tube which are connected end to end; the second half-bridge circuit comprises a third switch tube and a fourth switch tube which are connected end to end; the first inductor is connected to a midpoint between the first switch tube and the second switch tube and a midpoint between the third switch tube and the fourth switch tube; the source electrode of the fourth switch tube is connected with the source electrode of the second switch tube; the bidirectional full-bridge circuit is connected with the second end and comprises a primary DCDC full-bridge circuit, a resonance network, a transformer and a secondary DCDC full-bridge circuit which are connected in sequence; and the first capacitor is used for being connected between the buck-boost circuit and the bidirectional full-bridge circuit. According to the bidirectional direct-current converter provided by the invention, any one of the two sides can be quickly subjected to buck-boost operation.

    本发明提出了一种双向直流变换器、直流充电桩以及储能系统。其中,双向直流变换器包括:第一端;第二端;升降压电路,与第一端连接,包括第一半桥电路、第二半桥电路和第一电感,其中,第一半桥电路包括首尾相连的第一开关管和第二开关管;第二半桥电路包括首尾相连的第三开关管和第四开关管;第一电感连接在第一开关管和第二开关管之间的中点和第三开关管和第四开关管之间的中点;第四开关管的源极与第二开关管的源极连接;双向全桥电路,与第二端连接,包括依次连接的原边DCDC全桥电路、谐振网络、变压器和副边DCDC全桥电路;第一电容,用于连接在升降压电路和双向全桥电路之间。本发明提供的双向直流变换器的两侧中任一侧都能够快速进行升降压。


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    Title :

    Bidirectional direct current converter, direct current charging pile and energy storage system


    Additional title:

    双向直流变换器、直流充电桩以及储能系统


    Contributors:
    JIA ZHENG (author) / SUN ZHONGWEI (author)

    Publication date :

    2024-11-22


    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




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