Battery thermal management mainly includes:
1. Make the temperature in the battery pack uniform, reduce the internal temperature difference, suppress the formation of local hot spots, and prevent the battery from decaying too quickly due to excessive local temperature, reducing the overall life of the battery pack.
2. Effective heat dissipation when the battery temperature is high to prevent thermal runaway accidents.
3. Effectively preheat the battery when the battery temperature is low to increase the battery temperature and ensure the charging and discharging performance and safety at low temperature.
Power battery module
Therefore, battery thermal management is mainly temperature control, including heat dissipation and heating. The cooling methods can be divided into: air cooling, liquid cooling, direct cooling. No matter which method is adopted, the heat must be transferred from the power battery system to the heat dissipation component through thermal conduction, and then the heat dissipation component itself is used to dissipate the heat into the ambient air.
Battery pack structure diagram
However, the materials used in battery pack components are mainly metal and plastic, and the interfaces between the battery packs are irregular. The surface tolerance of the components also needs to be considered, especially in a large battery pack, the tolerance is generally 0.5mm-6.0mm, This will lead to the presence of air when the components are in contact, and the heat cathode of the air is extremely large, which has a great impact on the heat conduction between the battery pack components.
Therefore, when solving the heat dissipation problem of the battery pack, it is necessary to consider the interface heat conduction problem of the materials used in the battery pack. Due to its excellent plasticity and high thermal conductivity, thermal interface materials can solve the above problems very well. The thermal conductive gap filler (gel) produced by our company can significantly improve the interface heat conduction.
Demonstration of heat conduction at the bottom of the battery pack box
Application of thermally conductive gap filler in battery thermal management:
Unlike thermally conductive sheets, the semi-liquid nature of thermally conductive gap fillers (gels) makes it easy to adapt to fill irregular interfaces, filling large gaps and holes without a lot of pressure, ensuring minimal air trapping between interfaces , and the molding effect is very good, and it will not volatilize for a long time. Effectively reduce the overall thermal resistance of the interface, effectively improve the thermal conductivity efficiency and thermal conductivity uniformity. Compared with other thermally conductive materials, thermally conductive gap filler (gel) has lower cost, better thermal conductivity and heat dissipation effect, stronger plasticity, and easier use. Convenience.
Thermally Conductive Gap Filler (Gel) Application Simulation
Our company has been focusing on R&D and production of thermal conductive materials such as thermal conductive gap filler (gel) for more than ten years, and has the most advanced automatic production equipment in China. The raw materials used in the products are high-quality imported materials to ensure stable product quality.