Pure Electric Vehicle Thermal Management System
The thermal management system of a car is an important system to adjust the environment of the car cockpit and the working environment of auto parts. It comprehensively improves energy utilization efficiency through cooling, heating and heat internal conduction. To put it simply, it seems that people need to use fever-reducing plasters when they have a fever; and when the cold is unbearable, they need to use warm babies. The complex structure of pure electric vehicles cannot be intervened by human operation, so its own "immune system" will play a vital role.
The thermal management system of pure electric vehicles is more complicated than that of ordinary fuel vehicles, because pure electric vehicles have more components that need to be thermally controlled, such as batteries, controllers, and electric motors. The thermal management system of pure electric vehicles not only includes the air conditioning system, but also adds different parts such as the battery pack environment, power electronic devices, and motor heat dissipation according to the thermal management requirements.
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The thermal management system of pure electric vehicles assists driving by maximizing the use of battery energy. By carefully reusing the heat energy in the vehicle for the air conditioner and battery inside the vehicle, thermal management can save battery energy to extend the driving range of the vehicle. The benefits are especially pronounced in extreme hot and cold temperatures. The thermal management system of pure electric vehicles mainly includes high-voltage battery management system (BMS), battery cooling plate, battery cooler, high-voltage PTC electric heater and heat pump system and other main components according to different models.
The thermal management system solution for pure electric vehicles covers the entire system, from control strategies to smart components, and manages two extreme temperatures by flexibly distributing the heat generated by powertrain components during operation. By allowing all components to operate at optimal temperatures, BEV thermal management system solutions reduce charging time and extend battery life.
The high-voltage battery management system (BMS) is more complex than the battery management system of traditional fuel vehicles. The system is integrated into the battery pack of pure electric vehicles as a core component. Based on collected system data, the system transfers thermal energy from the battery cooling circuit to the vehicle's refrigeration circuit to maintain optimal battery temperature. The system has a modular structure, which mainly includes battery management controller (BMC), battery monitoring circuit (CSC) and high voltage sensor and other equipment.
