CONTROL SYSTEM AND METHOD FOR IMPROVING BATTERY OUTPUT ENERGY EFFICIENCY, AND ELECTRONIC DEVICE

A control system and method for improving battery output energy efficiency, and an electronic device are provided. The control system includes: a battery, a charging chip, a voltage conversion module, and a power supply management module. The battery is configured to send, when the control system is not connected to an external power supply, battery voltage to the voltage conversion module by means of the charging chip. The voltage conversion module is configured to receive the battery voltage, determine an operating mode on the basis of the battery voltage, acquire an output voltage corresponding to the operating mode, and output the output voltage to the power supply management module. The power supply management module is configured to convert and output at least one system voltage on the basis of the output voltage, and the at least one system voltage is configured to supply power to a powered system.