Battery box temperature control in cold regions

This paper designs a battery management system for the use of power batteries under low temperature conditions. By establishing a three-dimensional simulation model, the paper simulates the temperature rise of batteries under different heating powers and establishes suitable fuzzy control rules. The hardware design is implemented using the GD32F303RCT6 and BQ76940 chips to control the battery temperature. Finally, the battery is tested in a constant temperature chamber at low temperatures, and it is found that the battery management system designed in this paper can effectively maintain the battery temperature.