New energy vehicle battery thermal management system. With the vigorous development of new energy vehicles, batteries play an indispensable and key role in performance, safety and service life. Battery thermal issues have become the primary concern of all companies.

New energy vehicle battery thermal management system. With the vigorous development of new energy vehicles, batteries play an indispensable and key role in performance, safety and service life. Battery thermal issues have become the primary concern of all companies. The temperature of the lithium battery will directly affect the energy and power performance in use. Defects in the manufacturing process or improper operation in the use process may cause the battery to overheat locally, which will cause a chain exothermic reaction, and finally cause smoke, fire or even explosion The serious accident threatened the life safety of vehicle drivers and passengers.

In addition, the working and storage temperature of lithium batteries will also indirectly affect the service life. Too high or too low temperature will accelerate the decay of battery life. Generally, the suitable temperature is about 10~30°C. The large-scale power battery makes the ratio of the battery surface area to the volume relatively reduced, which makes the internal heat of the battery difficult to dissipate, and may cause internal temperature unevenness and local temperature rise problems, which will accelerate the battery aging.