Contents are excerpts only. If interested, please view the original article . What is Battery Thermal Management System? Battery thermal management system is a system that keeps the electric vehicle power battery within a suitable temperature range. Its existence increases the service life of the battery and ensures the safety and driving mileage of the entire vehicle. Its abbreviation is BTMS. But BTMS is often used to refer to betamethasone or emulsifying wax. To differentiate, I will refer to it as a BTMS battery below. Battery Liquid Cooling Principle The main principle of cooling is that the coolant contacts the battery core through the water pipe. Currently, a mixed solution of water and ethylene glycol is mostly used. The liquid cooling BTMS battery system couples a heat exchanger to the refrigeration cycle to remove heat from the battery through the refrigerant. Its core components are the compressor, heat exchanger and water pump. As the starting point of refrigeration po...