Pre-charging circuit, power conversion device and electronic equipment

The utility model relates to the technical field of electronics, and provides a pre-charging circuit, a power conversion device and electronic equipment, the pre-charging circuit is provided with a plurality of charging paths adaptive to different charging voltages, and the magnitude of the input voltage is detected through a detection circuit; and the gating circuit outputs a gating signal to the charging path adaptive to the output voltage according to the input voltage, so that the charging path is conducted to charge a bus capacitor of the power module based on the input voltage. Therefore, corresponding pre-charging circuits do not need to be set for different input voltages, so that the circuit structure is simple, and the cost is reduced. 本申请涉及电子技术领域，提供了一种预充电电路、功率变换装置和电子设备，预充电电路设置了多条适配不同充电电压的充电路径，通过检测电路检测输入电压的大小，选通电路根据输入电压的大小向适配该输出电压的大小的充电路径输出选通信号，使得该充电路径导通以基于输入电压给功率模块的母线电容充电。如此，不需要为不同的输入电压设置对应的预充电路，使得电路结构简单，降低了成本。