What are the cooling methods for the power battery?

The power battery is the core of the new energy battery. The function of the battery separator is also very important. It is mainly to separate the positive and negative plates 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, free passage between the negative electrodes. Therefore, the diaphragm is the core material to ensure the safe and stable operation of lithium-ion batteries.

The electrolyte is used to isolate the source of combustion. The diaphragm is to increase the heat-resistant temperature, while the sufficient heat dissipation is to lower the battery temperature and avoid excessive heat build-up. If the battery temperature rises sharply to 300 ° C, even if the separator does not melt and shrink, the electrolyte itself, the electrolyte and the positive and negative electrodes will have a strong chemical reaction, releasing the gas, forming an internal high pressure and exploding, so the appropriate heat dissipation method is adopted. It is important.

Introduction of heat dissipation method for power battery package air cooling structure

Power battery package air cooling structure cooling method

1. Install a cooling fan at one end of the battery pack, and leave a venting hole at the other end to make the air accumulate between the gaps of the battery core, taking away the high heat generated when the battery is working;

2. Add thermal silica gel gasket on the top and bottom of the electrode end, so that the heat that is not easy to dissipate at the top and bottom is transmitted to the metal casing through the TIF thermal silica film, and the high electrical insulation and puncture resistance of the silicone sheet to the battery The group has a good protection.

Introduction of heat dissipation method for power battery package liquid cooling structure

Power battery package liquid cooling structure cooling method

1. The heat of the battery core is transferred to the liquid-cooled tube through the thermal silica gel sheet, and the heat is cooled and contracted by the cooling liquid to freely circulate the heat to take away the heat, so that the temperature of the entire battery pack is unified, and the strong specific heat capacity of the coolant absorbs the battery when working. The heat makes the entire battery pack operate at a safe temperature.

2. The thermal insulation silica gel sheet has good insulation performance and high resilience toughness, can effectively avoid the vibration and friction damage between the batteries, and the short circuit hidden danger between the batteries, is the best auxiliary material for the water cooling scheme.

Introduction of natural convection cooling method for power battery pack

1. This type of battery pack has large space and good contact with air. The bare part can naturally exchange heat through the air. The bottom part cannot radiate heat through the heat sink. The heat conductive silicone sheet fills the gap between the heat sink and the battery pack, and conducts heat and vibration insulation.

2. The heating sheet solution is mostly applied to the new energy automobile market. The heat of the preheating heating sheet before starting is transferred to the battery pack through the thermal conductive silica sheet. The preheating battery and the thermal conductive silicone sheet have good thermal conductivity and insulation performance. Wear resistance, effective heat transfer and protection against wear and short circuit caused by friction between the battery pack and the heater chip.

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