The invention relates to the technical field of charging, and discloses a super charging pile for charging an electric vehicle, which comprises a three-phase cascaded H-bridge converter, an isolated DC/DC converter, a power distribution unit and a charging gun. DC sides of H-bridge modules of the three-phase cascaded H-bridge converter are connected with input ends of the isolated DC/DC converter in a one-to-one correspondence manner, positive and negative output ends of the isolated DC/DC converter are respectively connected with a switch in the power distribution unit in parallel, and the other end of the switch connected with the positive output end is connected with a positive DC bus of the charging gun; the other end of the switch connected with the negative output end is connected with a charging gun negative DC bus. The advantage that the three-phase cascaded H-bridge converter has a plurality of mutually isolated direct-current bus interfaces is reserved, so that simultaneous charging of a plurality of electric vehicles is realized, and meanwhile, in-phase and inter-phase power matched operation of the three-phase cascaded H-bridge converter can be ensured when the electric vehicles with different power requirements are charged at the same time, so that the power utilization rate of the three-phase cascaded H-bridge converter is improved. And the problem of asymmetry or distortion of power grid current is improved.
本发明涉及充电技术领域,公开了一种用于电动汽车充电的超级充电堆,包括三相级联H桥变换器、隔离型DC/DC变换器、功率分配单元和充电枪。三相级联H桥变换器H桥模块的直流侧与隔离型DC/DC变换器输入端一一对应连接,隔离型DC/DC变换器的正负输出端分别并联功率分配单元中的开关,正输出端所连开关的另一端连接充电枪正直流母线,负输出端所连开关的另一端连接充电枪负直流母线。本发明保留了三相级联H桥变换器有多个相互隔离直流母线接口的优势,以便于实现对多辆电动汽车的同时充电,同时,在不同功率需求的电动汽车同时充电时,也能够确保三相级联H桥变换器的相内与相间功率匹配运行,改善了电网电流不对称或者畸变问题。
Super charging pile for charging electric automobile
一种用于电动汽车充电的超级充电堆
2023-07-28
Patent
Electronic Resource
Chinese
IPC: | 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 / 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 |
Solar charging pile and electric automobile charging room with solar charging pile
European Patent Office | 2015
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