Design of a battery early warning system based on the single-chip microcomputer

Abstract

Abstract There is countless news of disasters caused by battery damages, such as explosions, electricity leaks, and thermal runaways each year, resulting in millions of dollars of losses, which highlights the scarcity of an effective damage detection system. However, early-stage damages cannot be detected by current detection methods accurately. This design uses the LTC6811-1 chip to monitor the current and voltage data of the cell and then transmits the data to the ATMEGA328-AU single chip, where the data are processed before being displayed on a PC screen. The principle of detecting damages is to compare the fluctuations in detected data with the pre-set data, i.e., the voltage and current data of discharges of a standard normal cell. If the fluctuation is significantly different in a short time, the cell is considered to be damaged. This offers a new alternative for battery monitoring with earlier warning messages sent and improved details about the damage.