Application of thermal conductive material in heat dissipation of power battery pack

Too high temperature has a bad effect on people or things, especially new energy vehicles. Power battery pack is the output source of new energy vehicles. If the temperature of power battery pack is too high, it is easy to produce battery capacity attenuation, power decline, and easy to lead to thermal runaway. Therefore, too high temperature for power battery pack will affect its service life, stability and operation performance.

The power battery pack will discharge large current when running, during which a lot of heat will be generated. Timely bringing heat to the outside is the key point of the whole heat dissipation work. Common cooling systems are air cooling, liquid cooling, direct cooling systems, PCM cooling and heat pipe cooling, etc., which have the same thing in common is to conduct the excess heat of the power battery pack to the outside, so that the battery pack can maintain a proper temperature range to work.

Either way, they require the use of thermal conductive materials. Thermal conductivity material is the general name of the material coated between the heating device and the heat dissipation device and reduce the contact thermal resistance between the two. The role of thermal conductive materials is to fill the gap between the heating device and the heat dissipation device, eliminate the air in the gap, reduce the contact thermal resistance between the two, so as to improve the heat conduction speed between the two, so as to ensure the performance and service life of the power battery pack.