一种具有故障闩锁保护的电池充电电路
By introducing a DC-DC Buck converter, a sampling amplifier circuit, and a latch-up control circuit into the battery charging circuit, the impact of downstream circuit failures on other circuits in flammable and explosive environments is resolved, fault latch-up protection of the circuit is realized, and the safe and reliable operation of the circuit is ensured.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Filing Date
- 2025-08-19
- Publication Date
- 2026-07-17
AI Technical Summary
In flammable and explosive environments, when an overcurrent or short-circuit fault occurs in the downstream circuit, existing technologies cannot effectively prevent the normal operation of other circuits from being affected, leading to malfunctions of the safety barrier protection mechanism.
A DC-DC Buck converter is set between the battery and the power supply circuit. Through the first sampling resistor and MOSFET, the power supply is cut off in case of overcurrent or short circuit using the sampling amplifier circuit and latch-up control circuit. Combined with the soft-start control circuit, the MOSFET is prevented from switching frequently, thus realizing fault latch-up protection.
It effectively prevents downstream circuit failures from affecting other circuits, avoids safety barrier malfunctions, and ensures safe and reliable circuit operation.
Smart Images
Figure CN224520695U_ABST