Thermal conductive silica gel on the battery pack air-cooled liquid-cooled and natural convection three ways of heat dissipation. Power battery is the core of the new energy vehicle battery, the role of the battery diaphragm is also very important, mainly in a small space to separate the positive and negative plates of the battery to prevent the two poles from contacting each other to cause a short circuit, but can ensure that the ions in the electrolyte between the positive and negative electrodes pass freely. Therefore, the diaphragm becomes the core material to ensure the safe and stable operation of lithium-ion batteries.

Electrolyte is to isolate the source of combustion, diaphragm is to increase the heat-resistant temperature, and heat dissipation is sufficient to reduce the temperature of the battery to avoid excessive heat accumulation triggered by runaway battery. If the battery temperature rises sharply to 300 ℃, even if the diaphragm does not melt and shrink, the electrolyte itself, electrolyte and positive and negative electrodes will also occur a strong chemical reaction, the release of gas, the formation of internal high pressure and explosion, so the use of appropriate heat dissipation is critical.

Power battery pack air-cooled structure heat dissipation. 

1、Add a cooling fan at one end of the battery pack and leave a ventilation hole at the other end to speed up the air flow between the gaps of the battery cells and take away the high heat generated by the battery cells when they are working.

2、Add heat-conducting silicone film at the top and bottom of the electrode, so that the heat not easily dissipated at the top and bottom can be conducted to the metal shell through the heat-conducting silicone film to dissipate heat, while the high electrical insulation and puncture resistance of the heat-conducting silicone film has a very good protective effect on the battery pack.

Power battery pack liquid cooling structure heat dissipation.

1、The heat of the electric cell is transferred to the liquid cooling tube through the thermal conductive silicone film, and the heat is taken away by the free circulation flow of the coolant thermal expansion and contraction, so that the temperature of the whole battery pack is unified, and the strong specific heat capacity of the coolant absorbs the heat generated by the working of the electric cell, so that the whole battery pack acts within the safe temperature.

2、The good insulation performance and high resilience of the heat-conducting silicone film can effectively avoid the problem of vibration and friction breakage between the battery cells, and the hidden danger of short circuit between the battery cells, which is the best auxiliary material for water-cooling solution.

Power battery pack natural convection heat dissipation.

1, this kind of battery pack space is large, good contact with air, the exposed part can be natural heat exchange through the air, the bottom part can not be natural heat exchange through the heat sink, thermal conductive silicone film filling the middle gap between the heat sink and the battery pack, thermal conductivity, shock absorption, insulation.

2、Heating sheet program is mostly used in the new energy vehicle market, the heat of the battery preheating heating sheet before starting will transfer heat to the battery pack through the thermal conductive silicone film, preheat the battery, thermal conductive silicone film has good thermal conductivity, insulation performance, wear resistance, can effectively transfer heat and protect the battery pack and the friction between the heating sheet generated by wear, short circuit, etc.