Reverse-flow type double-air-channel cooling system for energy storage module

Abstract

The invention discloses a reverse-flow type double-air-channel cooling system for an energy storage module. The reverse-flow type double-air-channel cooling system for the energy storage module comprises a box body, an air draft device, an energy storage module and a heat dissipation device. The air draft device, the energy storage module and the heat dissipation device are respectively arranged in the box body, and the energy storage module is arranged on the heat dissipation device; the box body is provided with an air inlet and an air outlet, the energy storage module comprises a pluralityof single battery cells, a gap is formed between every two single battery cells, a first air duct for air to flow is formed by the gap, and the first air duct communicates with the air inlet and the air outlet of the box body; and a second air duct opposite to the first air duct in air flow is arranged in the heat dissipation device, the second air duct communicates with the air inlet and the airoutlet of the box body, and a reverse-flow type double-air-duct cooling system is formed through the first air duct and the second air duct. The reverse-flow type double-air-duct cooling system has the advantages of being good in temperature equalizing effect, safe, efficient, high in initiative, large in heat dissipation area, multiple in heat dissipation ways and the like.

Description

technical field [0001] The invention relates to the technical field of battery energy storage, in particular to a counterflow dual-air channel cooling system for an energy storage module. Background technique [0002] Battery energy storage technology has many important functions, such as smoothing the fluctuation of renewable energy generation, power grid peak regulation and frequency modulation, improving power distribution quality and reliability, and distributed micro-grid energy storage. It is one of the most rapidly developing energy storage technologies. With the large-scale application of battery energy storage systems, increasing the capacity of battery energy storage systems is an important trend in future development. [0003] Temperature has a great impact on all aspects of battery performance, which in turn affects the performance of the battery system, such as the impact on battery performance such as capacity, power, and safety. Excessively high temperature a...

AI Technical Summary

Problems solved by technology

Excessively high temperature and large temperature difference are not conducive to the performance of the battery energy storage system. In severe cases, it will cause thermal runaway, causing accidents such as fire and explosion

[0004] In the prior art, the cooling systems for battery energy storage mainly include air-cooling systems and water-cooling systems. The air-cooling system has the advantages of simple structure, safe cooling medium, easy maintenance and low cost. However, the existing air-cooling system air duct and The flow direction is relatively single, and the temperature of the cooling air will gradually increase along the flow path, resulting in a large temperature difference inside the battery energy storage module. In addition, in a large-capacity battery energy storage system, the air cooling system is prone to the problem of uneven air volume distribution, which cannot The cooling air is evenly sent to each energy storage module, causing the temperature of the local battery energy storage module to be always high, and in severe cases, it will cause thermal runaway

Compared with the air-cooled system, the water-cooled system has a better cooling effect, but the cost is high, the system is complex, and there are certain safety hazards. The water in the water-cooled system leaks into the battery system, which may easily cause a short circuit of the battery cell and cause thermal runaway of the battery cell. Cause safety accidents, not suitable for use in large-capacity battery energy storage systems

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