Vehicle heat management system based on positive and negative electric cards and control method thereof

Abstract

The invention discloses a vehicle heat management system based on positive and negative electric cards and a control method thereof. Heat transfer fluid is driven by a circulating pump to flow through a positive electric card, a negative electric card, a high-temperature heat exchanger and a low-temperature heat exchanger through pipelines. The method is composed of outer circulation and inner circulation, and the two layers of circulation are synchronously and reversely carried out. In a refrigeration mode, an electric field is applied, normal-temperature fluid firstly passes through the positive electricity card and absorbs heat to become high-temperature fluid, and then the high-temperature heat exchanger exchanges heat to become normal-temperature fluid; and after the electric field is removed, low-temperature fluid is formed through the negative electric card and heat release, and normal-temperature fluid is formed by absorbing heat from the low-temperature heat exchanger. In a heating mode, an electric field is applied, normal-temperature fluid firstly passes through the negative electric card and releases heat to become low-temperature fluid, and then the low-temperature fluid exchanges heat with the low-temperature heat exchanger to become normal-temperature fluid; after the electric field is removed, high-temperature fluid is formed through the positive electricity card and absorbs heat, and normal-temperature fluid is formed by releasing heat to the high-temperature heat exchanger. The system is free of moving parts, ingeniously overcomes the defects in the prior art, and is simple in structure, convenient to use, clean and environmentally friendly.

Description

technical field [0001] The invention belongs to the field of refrigeration and low-temperature engineering, and in particular relates to a vehicle thermal management system based on a positive and negative electric card and a control method thereof. Background technique [0002] As a traditional refrigeration technology, vapor compression refrigeration has been widely used in production and life such as industrial refrigeration, food preservation and air conditioning systems. However, vapor compression technology also has problems such as damaging the environment, low efficiency, and bulky equipment. With the continuous improvement of the level of scientific and technological development and people's increasing emphasis on energy saving, emission reduction and environmental protection, the development of efficient and environmentally friendly refrigeration technology has become the mainstream direction of current research. [0003] As a new refrigeration method, electric car...

AI Technical Summary

Problems solved by technology

[0004] Although compared with vapor compression refrigeration, electric card refrigeration has higher efficiency and does not emit any greenhouse gases, but the main research on electric card refrigeration devices is still mainly focused on the development of electric card materials and the test stage of electric card effects. There is little research on the system level

Most of the existing electric card refrigeration equipment needs to realize the heat and cold exchange process through the movement or rotation of the electric card components. However, the stability of this design is poor, and it is difficult to use on mobile equipment such as vehicles, and solid contact The heat transfer method of the surface is single, and the heat transfer efficiency is low, so it has not been widely used in production and life.

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