The invention discloses a vehicle-mounted charging circuit and a bidirectional direct-current conversion circuit, and relates to the technical field of automobile new energy. The circuit comprises anAC-DC conversion circuit and a bidirectional DC conversion circuit. The AC/DC conversion circuit is used for converting AC input by an AC power supply into DC and outputting the DC to the bidirectional DC conversion circuit; and the bidirectional DC conversion circuit comprises at least one LLC resonant conversion unit circuit. Each LLC resonant conversion unit circuit comprises a first single-phase full-bridge rectification circuit, a first resonant compensation circuit, a voltage transformation circuit and a second single-phase full-bridge rectification circuit. Due to the fact that single-side resonance compensation is conducted on the LLC resonance conversion unit circuit, the resonance current waveform is smoother, current clutters are fewer, noise and loss of the bidirectional direct-current converter can be reduced, meanwhile, the number of resonance elements can be reduced, and then the size of the bidirectional direct-current conversion circuit and the heating value of devicesare reduced.
一种车载充电电路和双向直流变换电路,涉及汽车新能源技术领域,包括交直流变换电路和双向直流变换电路,其中,交直流变换电路用于将交流电源输入的交流电转换为直流电输出给双向直流变换电路,双向直流变换电路包括至少一个LLC谐振变换单元电路,每个LLC谐振变换单元电路包括第一单相全桥整流电路、第一谐振补偿电路、变压电路和第二单相全桥整流电路,由于对LLC谐振变换单元电路进行单边谐振补偿,使得谐振电流波形更光滑,电流杂波少可减少双向直流变换器的噪声和损耗,同时还可减少谐振元件的数量,进而减少双向直流变换电路的尺寸及器件发热量。
Vehicle-mounted charging circuit and bidirectional direct-current conversion circuit
一种车载充电电路和双向直流变换电路
2020-07-10
Patent
Elektronische Ressource
Chinesisch
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 / H02J CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER , Schaltungsanordnungen oder Systeme für die Abgabe oder Verteilung elektrischer Leistung |
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