The invention provides a power conversion device which comprises N AC-DC conversion circuits, N input power lines and a detection device, the N AC-DC conversion circuits are connected in parallel, and the N input power lines are in one-to-one correspondence with the N power conversion circuits, each AC-DC conversion circuit is used for rectifying alternating current output from the corresponding input power line and outputting direct current; the detection device comprises a first port and a second port and is used for obtaining leakage current of N input power lines through the first port and obtaining current or voltage of the ith input power line through the second port; determining the leakage current of the power conversion device according to the leakage current of the N input power lines and the current or voltage of the ith input power line; wherein N is a positive integer greater than or equal to 2, and i is greater than or equal to 1 and less than or equal to N. According to the scheme, the leakage protection problem of the AC input side can be solved.

    本申请提供了一种功率转换装置,包括:N个交流‑直流AC‑DC转换电路、N个输入电源线和检测装置,N个AC‑DC转换电路并联连接,且N个输入电源线与N个功率转换电路一一对应,每个AC‑DC转换电路用于对从所对应的输入电源线输出的交流电进行整流并输出直流电;检测装置包括第一端口、第二端口,检测装置用于:通过第一端口获得N个输入电源线的漏电流,以及通过第二端口获得第i个输入电源线的电流或电压;根据N个输入电源线的漏电流和第i个输入电源线的电流或电压,确定功率转换装置的漏电流;其中,N为正整数,且N≥2,1≤i≤N。上述方案能够解决交流输入侧的漏电保护问题。


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    Title :

    Power conversion device and charging equipment


    Additional title:

    一种功率转换装置及充电设备


    Contributors:
    YI LIQIONG (author) / CHEN PAN (author) / YUAN FENGGANG (author)

    Publication date :

    2024-04-26


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    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 / H02H EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS , Schutzschaltungsanordnungen



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