The invention discloses a bidirectional direct-current charger circuit, which comprises a bidirectional AC/DC conversion circuit connected with an AC side and a bidirectional DC/DC conversion circuitconnected with a DC side, wherein the bidirectional AC/DC conversion circuit is connected with the bidirectional DC/DC conversion circuit through a bus; the bidirectional AC/DC conversion circuit comprises a full-bridge switching circuit, the bidirectional DC/DC conversion circuit comprises a double-half-bridge LLC circuit with a high-frequency transformer; And during forward working, a full-bridge switching circuit works in a rectification mode, the two half-bridges alternately work in a power frequency mode and a high frequency mode, and during reverse working, the full-bridge switching circuit works in an inversion mode. The two half bridges of the AC/DC circuit work in a power frequency and high frequency alternating state, so that the switching loss can be effectively reduced, and theheating of a switching tube is reduced.
本发明公开了一种双向直流充电机电路,包括与交流侧连接的双向AC/DC变换电路和与直流侧连接的双向DC/DC变换电路,双向AC/DC变换电路与双向DC/DC变换电路通过母线相连;双向AC/DC变换电路包括全桥开关电路,双向DC/DC变换电路包括带高频变压器的双半桥LLC电路;正向工作时,全桥开关电路工作整流模式下,两个半桥交替工作在工频和高频模式,反向工作时,全桥开关电路工作在逆变模式。本发明的AC/DC电路的两个半桥工作在工频和高频交替状态,可以有效减少开关损耗,降低开关管的发热。
Bidirectional direct-current charger circuit
一种双向直流充电机电路
2020-05-26
Patent
Electronic Resource
Chinese
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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