EV battery soH, soC monitor on the edge of speed control and fire protection

Abstract

Lithium batteries are the most common energy storage devices in items such as electric vehicles, portable devices, and energy storage systems. However, if lithium batteries are not continuously monitored, their performance could degrade, their lifetime become shortened, or severe damage or explosion could be induced. To prevent such accidents, we propose a lithium battery state of health monitoring method and state of charge estimation algorithm based on the state of health results. And also speed control in electric vehicles is mandatory as it is used to influence the rotational speed of motors and machinery. This has a direct effect on the operation of the machine and is crucial for the quality and outcome of the work. Li-ion batteries have a lot of energy in them, and thermal runaway accelerates quicker the more power is in the battery itself. If a battery is fully charged and something happened inside it, then thermal runaway would happen really quickly. To overcome this, fire protection of electric vehicle is necessary.