The invention discloses a multi-mode gallium nitride-based bidirectional vehicle-mounted charger, which comprises a front-stage bidirectional PFC (Power Factor Correction) and a rear-stage bidirectional CLLLC resonant DC-DC converter, wherein the front-stage bidirectional PFC is used for completing AC/DC (Alternating Current/Direct Current) conversion and controlling a power factor to be 1; the rear-stage bidirectional CLLLC resonant DC-DC converter is used for completing conversion of different voltage levels of DC-DC and charging a power battery; the front-stage bidirectional PFC has two working modes, the front-stage bidirectional PFC works in a totem pole PFC mode when a 220V single-phase power supply is connected, and the front-stage bidirectional PFC works in a two-level rectifier mode when a 380V three-phase power supply is connected; the rear-stage bidirectional CLLLC resonant DC-DC converter adopts a CLLLC resonant network topology, and the forward direction and the reverse direction are completely symmetrical; the front-stage bidirectional PFC is connected with the rear-stage bidirectional CLLLC resonant DC-DC converter, and the rear-stage bidirectional CLLLC resonant DC-DC converter is connected with the rechargeable battery; and all switching tubes in the front-stage bidirectional PFC and the rear-stage bidirectional CLLLC resonant DC-DC converter adopt gallium nitride-based switching tubes. And the charging efficiency of the electric vehicle is improved, a 220V single-phase power grid and a 380V three-phase power grid can be compatible, and V2G and V2L functions are realized.

    本发明公开一种多模式氮化镓基双向车载充电机,包括用于完成AC/DC转化,并控制功率因数为1的前级双向PFC,以及用于完成DC‑DC不同电压等级的转化,并对动力电池进行充电的后级双向CLLLC谐振DC‑DC变换器;前级双向PFC拥有两种工作模式,当接入220V单相电源时工作于图腾柱PFC模式,当接入380V三相电源时工作于两电平整流器模式;后级双向CLLLC谐振DC‑DC变换器采用CLLLC谐振网络拓扑,正向反向完全对称;前级双向PFC连接后级双向CLLLC谐振DC‑DC变换器,后级双向CLLLC谐振DC‑DC变换器连接充电电池;前级双向PFC和后级双向CLLLC谐振DC‑DC变换器中的开关管全部采用氮化镓基开关管。提高电动汽车充电效率,可以兼容220V单相电网和380V三相电网,实现V2G和V2L功能。


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    Title :

    Multi-mode gallium nitride-based bidirectional vehicle-mounted charger


    Additional title:

    一种多模式氮化镓基双向车载充电机


    Contributors:
    ZHENG WANG (author)

    Publication date :

    2022-12-16


    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 / 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



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