US Patent 11171500 Smart battery device and charging method

The present invention provides a smart battery device and a charging method. The charging method includes: obtaining a battery temperature of a battery unit; determining whether the battery temperature is lower than a first preset temperature; determining whether a current capacity of the battery unit is lower than a preset capacity when the battery temperature is lower than the first preset temperature; and enabling a heating system to increase the battery temperature when the current capacity of the battery unit is lower than the preset capacity.