The invention discloses a multifunctional bidirectional isolation type vehicle-mounted charger and a control method thereof. The multifunctional bidirectional isolation type vehicle-mounted charger comprises a front-stage Sepic-Zeta bridgeless PFC (Power Factor Correction) and a rear-stage bidirectional CLLLC converter, the front stage Sepic-Zeta bridgeless PFC comprises a bidirectional full-bridge AC/DC converter and a bidirectional Sepic-Zeta DC/DC converter, wherein the bidirectional full-bridge AC/DC converter and the bidirectional Sepic-Zeta DC/DC converter are connected. The bidirectional full-bridge AC/DC converter is connected with a 220V single-phase power grid; the backward stage bidirectional CLLLC converter is connected with the bidirectional Sepic-Zeta DC/DC converter; the forward resonance link and the reverse resonance link of the rear-stage bidirectional CLLLC converter are the same so that soft switching can be achieved conveniently, the rear-stage bidirectional CLLLC converter is finally connected with a power battery of the electric vehicle, and the front-stage Sepic-Zeta bridgeless PFC is combined to charge the power battery. The vehicle-mounted charger has multiple functions of G2V, V2G, V2V, V2L and the like at the same time, the output voltage range is adjustable in the range of 250V-750V, and the applicability and the safety are improved.
本发明公开了多功能双向隔离型的车载充电机及其控制方法,包括前级Sepic‑Zeta无桥PFC和后级双向CLLLC变换器;前级Sepic‑Zeta无桥PFC包括相连接的双向全桥AC/DC变换器和双向Sepic‑Zeta DC/DC变换器;双向全桥AC/DC变换器与220V单相电网相连接;后级双向CLLLC变换器与双向Sepic‑Zeta DC/DC变换器相连接;后级双向CLLLC变换器的正反向谐振环节相同,以便于软开关的实现,后级双向CLLLC变换器最终与电动汽车动力电池相连接,联合前级Sepic‑Zeta无桥PFC为动力电池充电。本发明使车载充电机同时具备G2V、V2G、V2V、V2L等多种功能,而且输出电压范围在250V‑750V范围内可调,提高了适用性和安全性。
Multifunctional bidirectional isolation type vehicle-mounted charger and control method thereof
多功能双向隔离型的车载充电机及其控制方法
2023-09-19
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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