At this stage, the cruising range of new energy vehicles and the energy density of power batteries have been comprehensively improved, and a series of challenges have also emerged.

　　Peng Gangrou, deputy dean of Tianjin Research Institute, said that with the increase of energy density, the heat generated by the power battery is also higher. Once the temperature rises, many operating characteristics of the battery will be affected, such as SOC, charge and discharge efficiency, battery life, etc. In severe cases, it will cause thermal runaway and affect the safety and reliability of the vehicle system.

　　In order to ensure the safe operation of the battery, it is necessary to improve the heat dissipation requirements of the power battery and control the temperature of the battery pack within a reasonable range.

　　At that time, Peng Gangrou, deputy dean of Tianjin Research Institute, will give a wonderful speech, focusing on sharing the thermal management technology of high-energy density lithium batteries.

　　Peng Gangrou mentioned that it is very important to establish a complete thermal management design process. In addition, the use of simulation tools and new materials will also help the development and realization of thermal management.

　　“First, it is necessary to establish a model analysis of the power battery heat distribution to obtain the temperature distribution; secondly, the battery cell size of the power battery can be optimized through the model, etc.; finally, the specific heat dissipation plan is considered.” Peng Gangrou added, generally speaking , For different battery packs, the countermeasures are also different.

　　For a long time, Tianjin has always controlled the temperature difference of the battery within 5℃ to adapt to a wide range of applications and ensure the convenience of use.