A phase change cooling system and its working method

Abstract

The invention discloses a phase change cooling system and its working method, which comprises a first split body, a second split body, a two-position three-way valve, a circulation pump and a drain valve; the inside of the first split body is divided into The loading chamber and the evaporation chamber, the first partition is a zigzag structure, and there is a thermal bridge between the tooth end of the first partition and the inside of the first split body, and a capillary liquid guide core is arranged on the inner wall of the evaporation chamber. There are heating components inside the chamber; the top of the evaporation chamber is the second partition, and a condensation pipe is arranged in the evaporation chamber. One end of the condensation pipe passes through the side wall of the evaporation chamber and communicates with the condensation water inlet, and the other end of the condensation pipe passes through the evaporation chamber. The side wall of the cavity is connected with the condensate outlet; the second split body is provided with a cooling heat exchanger, a spray pipe, a filler cavity and a water accumulation cavity in sequence from top to bottom. The working temperature is controlled below 40°C, and the structure is simple and the energy consumption is small.

Description

technical field [0001] The invention belongs to the field of power electronics and battery heat management, and relates to a phase change cooling system and a working method thereof. Background technique [0002] New technologies such as 5G communication, big data, and new energy vehicles will profoundly change people's way of life. Related industries have gradually developed and will usher in a period of rapid development. Among them, power electronic components are the core components of communication technology, and one of the core components of new energy electric vehicles is battery technology. Both power electronic components and battery components need to work under certain temperature conditions, otherwise their reliability will be affected. and safety, and these components will generate heat during operation, so for systems such as communication networks, data centers, new energy vehicles, and new energy power generation, it is necessary to cool power electronic com...

AI Technical Summary

Problems solved by technology

Among them, air-cooled heat dissipation is to take away the heat generated by the components by blowing air through the components. It has a simple structure, low manufacturing and maintenance costs, and low energy consumption. However, this method has a small specific heat capacity of the medium, poor heat dissipation effect, large internal temperature difference of the components, and large noise.

Liquid cooling heat dissipation is through direct contact between the cold plate and the components, the components transfer heat to the heat dissipation cold plate, and the liquid in the internal flow channel of the cold plate absorbs heat and flows out. Better, but flow resistance increases parasitic power dissipation

In addition, the heat transfer methods of air-cooled heat dissipation and liquid-cooled heat dissipation both use the sensible heat effect of the working fluid, so temperature differences cannot be avoided

In addition, for the recooling of the heat transfer medium in the traditional air-cooled and liquid-cooled methods, the main solution at present is to use the air-conditioning system, that is, the heat carried by the air or circulating water is discharged into the environment through the air-conditioning system. However, the air-conditioning system High energy consumption, complex system, bulky

For example, the air-conditioning system is used for power electronic cooling in current communication base stations, and about 50% of its total power consumption comes from the power consumption of air-conditioning; another example is the power battery cooling of electric vehicles. When the ambient temperature is high, the battery cooling mainly depends on Car air-conditioning system to dissipate heat, which seriously affects the cruising range of electric vehicles

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