The invention provides a direct-current converter and a charging pile. The direct-current converter comprises at least one primary side conversion module and a transformer module, the primary side change-over switch module is connected between primary side three-phase coils of one primary side conversion module and one transformer module; at least one secondary side transformation module; the secondary side change-over switch module is connected between a secondary side three-phase coil of one secondary side conversion module and a secondary side three-phase coil of one transformer module; and the controller controls the primary side/secondary side three-phase coil of the corresponding transformer module to be switched between star-shaped connection and angle-shaped connection by controlling the primary side change-over switch module/secondary side change-over switch module so as to adjust the primary side/secondary side voltage range of the transformer module. All transformer module coils can be switched between star-shaped connection and angle-shaped connection by controlling the change-over switch module, so that the voltage range of a transformer port can be flexibly increased/decreased, the input and use amount of the module is reduced, and the design cost is reduced to a certain extent.

    本发明提供一种直流变换器和充电桩,直流变换器包括:至少一个原边变换模块和变压器模块;连接在一个原边变换模块和一个变压器模块的原边三相线圈之间的原边切换开关模块;至少一个副边变换模块;连接在一个副边变换模块和一个变压器模块的副边三相线圈之间的副边切换开关模块;控制器,通过控制原边切换开关模块/副边切换开关模块控制对应的变压器模块的原边/副边三相线圈在星型和角型连接之间切换,以调节变压器模块的原边/副边电压范围。本发明通过对切换开关模块进行控制可以将所有变压器模块线圈在星型和角型连接之间切换,从而可以灵活增大/减小的变压器端口电压范围,减少模块的投入使用量,一定程度上减少了设计成本。


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    Title :

    Direct current converter and charging pile


    Additional title:

    直流变换器和充电桩


    Contributors:
    ZHU XUANCAI (author) / MA JIE (author) / FAN DEYU (author) / PAN BINHAN (author) / XU KUO (author)

    Publication date :

    2024-03-26


    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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