Terminal equipment, power supply switching method and power supply voltage adjusting method

The invention discloses terminal equipment, a power supply switching method and a power supply voltage adjusting method, and belongs to the technical field of electronics. The terminal equipment comprises a main battery compartment, an auxiliary battery compartment, an auxiliary battery charging circuit, a control circuit, a first switching circuit, a second switching circuit, an energy storage circuit and a processor, the positive electrode pin of the main battery bin is connected with the input end of the auxiliary battery charging circuit, the first input end of the control circuit and the input end of the first switching circuit, and the battery detection pin is connected with the second input end of the control circuit; the positive electrode pin of the auxiliary battery bin is connected with the output end of the auxiliary battery charging circuit and the input end of the second switching circuit; the first and second output ends of the control circuit are connected with the control ends of the first an