Trijų naujų energetinių transporto priemonių akumuliatorių šilumos išsklaidymo metodų analizė

      The power battery is a new energy battery, and the role of the battery separator is also very important. It is mainly to separate the positive and negative stages of the battery in a small space to prevent short-circuit caused by contact between the two poles, but to ensure that the ions in the electrolyte are positive and negative. Pass freely between poles. Therefore, the diaphragm has become a material to ensure the safe and stable operation of lithium-ion batteries.      

      The electrolyte is to insulate the combustion, the diaphragm is to increase the heat-resistant temperature, and the sufficient heat dissipation is to reduce the battery temperature to avoid excessive heat accumulation and cause thermal runaway of the battery. If the battery temperature rises sharply to 300 degree , even if the diaphragm does not melt and shrink, the electrolyte itself, the electrolyte and the positive and negative electrodes will have a strong chemical reaction, releasing gas, forming internal high pressure and exploding, so use a suitable thermal solution is very important.

      1. Install a cooling fan at one end of the battery pack, and leave a vent hole at the other end to accelerate the air flow between the gaps of the batteries and take away the high heat generated when the batteries work;    

      2. Add thermally conductive silicone gaskets to the top and bottom of the electrode, so that the heat that is not easily dissipated from the top and bottom is conducted to the metal shell through the TIF thermally conductive silicone sheet for heat dissipation. At the same time, the high electrical insulation and puncture resistance of the silicone sheet affect the battery. The group has a very good protective effect.

      Introduction of natural convection cooling method for power battery pack    

      1. This type of battery pack has a large space and good contact with the air. The exposed part can exchange heat naturally through the air, and the bottom part that cannot naturally exchange heat is dissipated through the radiator. The thermal conductive silicone sheet fills the gap between the radiator and the battery pack to conduct heat and shock absorption. ,insulation.    

      2. The heating plate solution is mostly used in the new energy automobile market. The heat of the battery preheating heating plate before starting is transferred to the battery pack through the thermally conductive silicone film. The preheated battery and the thermally conductive silicone film have good thermal conductivity, insulation performance, Wear resistance, can effectively transfer heat and protect the wear and short circuit caused by friction between the battery pack and the heating plate.