The invention relates to a power supply circuit and a circuit fault detection method and device. Relates to the technical field of electronics, and solves the problem that a timely and accurate fault detection mechanism is lacked. The power supply circuit comprises a power battery, a power-on control module and an energy storage capacitor which are connected in series, and a discharge loop which is connected with the energy storage capacitor in parallel, the power-on control module comprises a pre-charging branch and a relay which are connected in parallel; the pre-charging branch comprises a diode, a first resistor and a first switch which are connected in series, the first switch is used for switching on and switching off the pre-charging branch, and the energy storage capacitor is charged through the pre-charging branch under the condition that the first switch is driven to be switched on; the discharge loop comprises a third resistor and a third switch which are connected in series, and the third switch is used for switching on and switching off the discharge loop. The technical scheme provided by the invention is suitable for a power battery power supply system, and a mechanism for discovering faults in the power supply circuit is realized.

    本公开是关于一种供电电路、电路故障检测方法和装置。涉及电子技术领域,解决了缺乏及时、准确的故障检测机制的问题。所述供电电路包括:相串联的动力电池、上电控制模块、储能电容,以及与所述储能电容并联的放电回路;所述上电控制模块包括并联的预充电支路和继电器;所述预充电支路包括相串联的二极管、第一电阻和第一开关,所述第一开关用于导通及切断所述预充电支路,在所述第一开关被驱动导通的情况下通过所述预充电支路为所述储能电容进行充电;所述放电回路包括相串联的第三电阻和第三开关,所述第三开关用于导通及切断所述放电回路。本公开提供的技术方案适用于动力电池供电系统,实现了对供电电路中故障的发现机制。


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    Title :

    Power supply circuit and circuit fault detection method and device


    Additional title:

    供电电路、电路故障检测方法和装置


    Contributors:
    JI JINYAN (author) / LI FEI (author) / YAO XIN (author)

    Publication date :

    2024-08-20


    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




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