New Energy Vehicle Thermal Management
New Energy Vehicles VS Traditional Vehicle Thermal Management: Multiple New Components
Thermal management refers to the management and control of the heat load generated during the operation of the car or the heating of the car under low temperature operating conditions. New energy vehicle thermal management system generally refers to the coupling system of cockpit air conditioning and three electric thermal management.
The thermal management of new energy vehicles is mainly divided into three parts: power battery thermal management, motor electronic control thermal management and cockpit thermal management. Compared with traditional vehicles, the thermal management of new energy vehicles has added two new parts: motor electronic control thermal management and power battery thermal management, corresponding to the addition of motor oil coolers, electronic control coolers, battery cooling plates and other components.
Among them, in the thermal management of the cockpit, the heating link is changed from engine heat exchange to PTC heating (resistance wire heating) or heat pump system heating. In the refrigeration link, the compressor is driven by the engine into an electric compressor.
Traditional vehicles are divided into powertrain and cockpit thermal management systems, while new energy vehicle thermal management systems are more complex and require higher integration. From fuel-driven mechanical structure to electronic and electrical control. Leading car companies such as Tesla in the industry use programs to control the integration of vehicle thermal management at the software level to improve driving comfort and vehicle performance, further pushing up technical barriers.
Operation Mechanism of New Energy Vehicle Thermal Management System
In new energy vehicles, the electric compressor is mainly responsible for adjusting the temperature in the cockpit and the temperature of the whole vehicle. The coolant flowing in the pipeline cools down the power battery and the electric motor control system in front of the car and completes the cycle in the car. The heat is transferred through the flowing liquid, and the valve flow is adjusted to balance the temperature when it is supercooled/overheated, so as to realize the thermal cycle of the whole vehicle.
