Normally, the temperature operating range of the battery cell is between 20 ℃ and 32 ℃. To ensure the reliable operation of energy storage batteries, there are generally two methods: air cooling and liquid cooling. The air cooling method uses forced convection of air to cool the air around the battery. Liquid cooling method, usually using a cooler or refrigeration unit, takes away the heat in the battery through the liquid. When the ambient temperature is below 32 ℃ and the battery's heat dissipation power is not large, air cooling can be used for cooling; When the ambient temperature is above 20 ℃ and the heat dissipation power of the battery is greater than 5w/cm2, liquid cooling can be used, which means using a refrigeration unit to provide coolant. The heat generated by the coolant and the battery is exchanged through a cold plate, which can quickly take away the heat inside the battery cell and ensure the normal use of the battery.
When the ambient temperature is below 5 ℃, in order to prevent freezing, a certain concentration of ethylene glycol solution is generally used as the coolant. Our energy storage air conditioning control scheme can meet various customer needs, and can precisely control the temperature and humidity inside the container, meeting the functions of unmanned, automatic cold and heat control, and humidity management.
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