Power battery is the core of the new energy battery, the role of the battery diaphragm is also very important, mainly in a small space to separate the battery positive and negative level plate, to prevent contact between the two poles caused by a short circuit, but to ensure that the ions in the electrolyte in the positive and negative electrodes between the free passage. Therefore, the diaphragm becomes the core material to ensure the safe and stable operation of lithium-ion batteries.

  The electrolyte is to isolate the source of combustion, the diaphragm is to increase the heat-resistant temperature, and the heat dissipation is sufficient to reduce the battery temperature, to avoid excessive heat buildup triggering the battery thermal runaway. If the battery temperature rises sharply to 300℃, even if the diaphragm does not melt and shrink, the electrolyte itself, the electrolyte and the positive and negative electrodes will undergo a strong chemical reaction, releasing gases, forming an internal high-pressure and exploding, so it is crucial to adopt suitable heat dissipation methods.

Power battery pack air-cooled structure heat dissipation method

  1. Install a cooling fan at one end of the battery pack, and leave ventilation holes at the other end, so that the air can accelerate the 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 thermal conductive silicone gaskets at the top and bottom of the battery terminal, so that the heat that is not easy to be emitted at the top and bottom can be conducted to the metal shell through the TIF thermal conductive silicone sheet to dissipate the heat, and at the same time, the silicone sheet's high electrical insulation and puncture-proof performance has a very good protective effect on the battery pack.

 Power battery pack liquid cooling structure heat dissipation method

  1, the heat of the electric cell is transferred to the liquid cooling tube through the thermally conductive silicone film, and the heat is taken away by the free circulation flow of the coolant by thermal expansion and contraction, so as to make the temperature of the whole battery pack uniform, and the strong specific heat capacity of the coolant absorbs the heat generated by the electric cell when it is working, so as to make the whole battery pack operate within the safe temperature.

  2, thermal conductive silicone sheet good insulation properties and high resilience toughness, can effectively avoid the vibration friction between the battery cell breakage problems, and short-circuit hazards between the battery cell, is the best water-cooled program of auxiliary materials.

  Introduction of natural convection heat dissipation of power battery packs

  1, such battery pack space, good contact with the air, the exposed part of the natural heat exchange through the air, the bottom can not be natural heat exchange parts of the heat dissipation through the radiator, thermal conductive silicone film filling the gap between the radiator and the battery pack, thermal conductivity, shock absorption, insulation.

  2, the heating pad program is mostly used in the new energy vehicle market, before starting the battery preheating heating pad heat through the thermal conductive silicone film will transfer heat to the battery pack, preheat the battery, thermal conductive silicone film has good thermal conductivity, insulation, wear-resistant performance, effective heat transfer and protection of battery packs and heating pads between the friction generated by the abrasion, short-circuit and so on.

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