Energy storage system and anti-condensation control method thereof

Abstract

The invention provides an energy storage system and an anti-condensation control method thereof, and the method comprises the steps: firstly, determining the dew point temperature of each battery module according to the detected environment temperature and relative humidity of the interior of each battery module; determining the surface temperature of an object in contact with each battery cell in each battery module; then, for each battery module, respectively determining the grade of the difference value between the dew point temperature and the surface temperature in the preset grade; and according to the grade, controlling the liquid cooling system to execute a corresponding action, and increasing the surface temperature of the corresponding battery module to avoid condensation. Namely, condensation is prevented through the action of the liquid cooling system, a series of problems caused by the adoption of a desiccant scheme are avoided, corresponding actions can be executed according to corresponding grades, the effect is controllable, and reliability is high.

Description

technical field [0001] The invention relates to the technical field of energy storage systems, in particular to an energy storage system and an anti-condensation control method thereof. Background technique [0002] The heat dissipation principle of the existing energy storage system is mainly to exchange and take away the heat generated by the battery through the flow of low-temperature substances (air, cooling fluid) over the surface of the battery. However, while the battery is dissipating heat, due to the low temperature of the cooling medium and the high ambient temperature, when the air with a higher temperature encounters a low-temperature object, condensation will form on the surface of the low-temperature object. [0003] Due to the battery technology, the positive electrode of the battery itself and the metal casing are connected through low impedance or directly. When condensation forms on the surface of a low-temperature object, the metal casings of multiple bat...

AI Technical Summary

Problems solved by technology

However, because the module itself will exchange air with the outside through the breathing valve to balance the pressure inside and outside the module, during the air exchange process, the air outside the module will enter the inside of the module; moreover, the desiccant absorbs water frequently for a long time, On the one hand, the drying performance of the desiccant will decrease. On the other hand, the desiccant absorbs a large amount of water. When the temperature rises, the moisture absorbed in the desiccant will evaporate again, which will increase the relative humidity inside the module box.

Images