Commercial vehicle emergency power supply control system with automatic switching function

The utility model relates to an automatic switching emergency power supply control system for a commercial vehicle, which is characterized by comprising a main power supply main body, a standby power supply main body, a power supply mounting seat, a partition plate, a protective cover body, an automobile generator and a power supply controller, the protective cover body can also be detachably installed on the frame body, and the partition plate is horizontally arranged in the power source installation base and divides the internal space of the power source installation base into an upper layer and a lower layer, namely an upper layer installation chamber and a lower layer installation chamber. The standby power supply main body is mounted in the lower-layer mounting chamber and fixedly connected with the power supply mounting seat, the main power supply main body is mounted in the upper-layer mounting chamber and fixedly connected with the partition plate, and a sealing protective cover plate is fixed in the