Power supply circuit and circuit fault detection method and device

• Main Authors: YAO XIN, JI JINYAN, LI FEI
• Format: Patent
• Language: Chinese; English
• Published: 20.08.2024
• Subjects: CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; PERFORMING OPERATIONS; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

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 i