The embodiment of the invention provides an AC-DC conversion device and a charging pile. The AC-DC conversion device comprises an input capacitance circuit, an AC-DC conversion circuit, one or more first switches connected in parallel and a first slow start circuit. Each input end except one input end in a plurality of input ends of the input capacitor circuit is used for being connected with an alternating current power supply through a first switch, and each first slow start circuit comprises a second switch and a current limiting resistor which are connected in series. The AC-DC conversion device is used for switching off the first switch and the second switch in the first slow start circuit when the AC-DC conversion circuit is in a standby state; before the AC-DC conversion circuit is started, the second switch in the first slow start circuit is closed firstly, and then the first switch connected with the first slow start circuit in parallel is closed. Furthermore, not only can the reactive power loss of the AC-DC conversion device in a standby state be reduced, but also the AC-DC conversion device can be prevented from being impacted by a relatively large current when being started.
本申请实施例提供一种AC‑DC转换装置和充电桩。AC‑DC转换装置包括输入电容电路、AC‑DC转换电路、一个或多个并联的第一开关和第一缓启电路。输入电容电路的多个输入端中除一个输入端以外的每个输入端用于通过一个第一开关连接交流电源,每个第一缓启电路包括串联的第二开关和限流电阻。AC‑DC转换装置用于:在AC‑DC转换电路待机时,断开第一开关以及第一缓启电路中的第二开关;在AC‑DC转换电路启动前,先闭合第一缓启电路中的第二开关,再闭合与第一缓启电路并联的第一开关。进而,不仅可以降低AC‑DC转换装置在待机时的无功损耗,还可以防止AC‑DC转换装置在启动时受到较大电流冲击。
Alternating current to direct current device and charging pile
交流转直流装置和充电桩
2025-02-18
Patent
Electronic Resource
Chinese
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 / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen |
European Patent Office | 2024
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