Immersion phase change cooling device and cooling method of net-forming type energy storage converter

By combining an immersion phase change cooling device with air cooling and liquid cooling technology, the problem of sudden increase in heat consumption of the grid-type energy storage converter under short-term multiple overload conditions is solved, achieving efficient and reliable cooling effects, which is suitable for harsh outdoor environments and compact designs.

CN120730685APending Publication Date: 2025-09-30BEIJING SIFANG JIBAO AUTOMATION +2
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Patent Information

Application Number
CN202510627439.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-05-15
Publication Date
2025-09-30

AI Technical Summary

Technical Problem

Traditional air-cooling technology is unable to effectively deal with the sudden increase in heat consumption of grid-type energy storage converters under short-term multiple overload conditions. In addition, the existing phase-change liquid cooling device has a complex structure, low efficiency, and poor reliability, making it difficult to meet the requirements of harsh outdoor environments and compact design.

Method used

An immersion phase change cooling device is used to absorb latent heat during the phase change process of the coolant. Combining air cooling and liquid cooling technologies, a reasonable cooling distribution path is designed, and liquid refrigerant is used for direct and indirect contact heat exchange in the power module to achieve efficient cooling.

Benefits of technology

It improves cooling efficiency, ensures temperature uniformity and equipment stability, reduces energy consumption and noise, enhances system reliability and compactness, is suitable for high temperature, high cold, and high humidity environments, and reduces the risk of fan failure.

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Abstract

The invention discloses an immersion phase change cooling device and cooling method for a net-forming type energy storage converter. The device comprises a power module phase change cooling unit, a condensation module, a liquid storage tank and a heat exchanger, the power module heating element is soaked in a refrigerant of the power module phase change cooling unit, the refrigerant absorbs heat and is heated to generate phase change vaporization, and a liquid refrigerant is converted into a gas refrigerant to be used for reducing the temperature of the power module heating element. A gaseous refrigerant flows to a condensation module, the condensation module exchanges heat with the gaseous refrigerant, so that the gaseous refrigerant is converted into a liquid refrigerant through phase change, and the liquid refrigerant flows to a heat exchanger and exchanges heat with air in the cabinet to reduce the temperature of elements in the cabinet; and the liquid refrigerant continues to flow into the power module phase change cooling unit to cool the power module, so that the immersion phase change cooling circulation process of the structure network type energy storage converter is realized. According to the invention, through phase-change heat exchange, the heat dissipation problem of sudden increase of heat consumption caused by short-time multi-time overload of the grid-forming type energy storage converter is solved, and the heat dissipation efficiency and reliability are improved.
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