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Heat management system of electric vehicle

A thermal management system, electric vehicle technology, applied in the field of electric vehicle thermal management system, to achieve the effect of improving temperature uniformity and stability

Pending Publication Date: 2018-06-29
INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a thermal management system for an electric vehicle, based on an integrated phase change temperature control scheme for the entire electric vehicle, aiming at solving the problems of uniformity of battery cooling and heating, solving the safety of cooling liquid and improving energy utilization efficiency, etc.

Method used

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  • Heat management system of electric vehicle
  • Heat management system of electric vehicle
  • Heat management system of electric vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0057] This embodiment provides a basic structure of an electric vehicle thermal management system, such as figure 2 As shown, it includes an automobile air conditioning system, a battery pack temperature regulating system and a heat exchanger 20, wherein the automobile air conditioning system is located on the left side of the heat exchanger 20, and the battery pack temperature regulating system is located on the heat exchanger 20 to the right of the . The left heat exchange pipeline of the heat exchanger 20 is connected in parallel with the evaporator 16 in the automobile air conditioning system, and the right heat exchange pipeline of the heat exchanger 20 is connected in series in the battery pack temperature regulation system.

[0058] The automobile air conditioning system is a cooling-only air conditioner, which means that the air conditioner can only provide cold air but not hot air for the passenger compartment of the automobile, or rely on electric auxiliary heat to...

Embodiment 2

[0065] This embodiment provides a thermal management system for an electric vehicle that is further provided with a collecting device on the basis of Embodiment 1.

[0066]The collection device is used to collect the discharged evaporative cooling working fluid, and it is arranged in the temperature regulation system of the battery pack. The collection device includes a closed liquid storage tank 33, and the closed liquid storage tank 33 has two communication lines with the main pipeline of the battery pack temperature regulation system: one of the gas collection pipes 30 is connected to the battery box through the steam safety valve 29 The air outlet pipe 2 is connected, and the other liquid replenishment pipe 32 is connected with the liquid inlet pipe 3 of the battery box through the liquid replenishment valve 31 . The vapor safety valve 29 is a controlled solenoid valve. Open when the pressure of the battery pack temperature regulation system is higher than the gas collect...

Embodiment 3

[0072] This embodiment provides a thermal management system for an electric vehicle that is further provided with a heat storage device on the basis of Embodiment 1.

[0073] The function of the heat storage device is to absorb the waste heat of the electrical components of the electric vehicle, store it and reuse it, and store the absorbed heat through the liquefaction of the solid-liquid phase change material; when the electric vehicle needs to be heated, the solid-liquid phase change The material gives off heat and solidifies into a solid state. The solid-liquid phase change material is solid at normal temperature. When it absorbs heat and its temperature rises to reach the freezing point, the material melts, absorbs a large amount of heat, and maintains the temperature at the same time. When the temperature of the solid-liquid phase change material drops to the freezing point, the material solidifies and releases a large amount of heat while maintaining the temperature. A...

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Abstract

The invention relates to a heat management system of an electric vehicle, and further provides a novel heat pump air-conditioning system of the vehicle. The heat management system and the novel heat pump air-conditioning system have the advantages that the temperature of a battery pack can be controlled by the aid of phase-change heat exchange technologies; a condenser of a phase-change temperature control system can be replaced with a heat exchanger which is serially connected to the air-conditioning system of the vehicle; a left heat exchange pipeline of the heat exchanger is connected withan evaporator in the air-conditioning system of the vehicle in parallel, and a right heat exchange pipeline of the heat exchanger is serially connected into a temperature regulating system of the battery pack; evaporative cooling working medium steam which is exhausted for regulating the pressures of the heat management system can be collected by the temperature regulating system of the battery pack; warm wind can be provided to a passenger compartment of the electric vehicle by the aid of waste heat of a power system; an energy storage device is further added into the heat management system,and accordingly the waste heat of the power system of the electric vehicle can be stored and reused; the power system of the electric vehicle further can be expanded, accordingly, comprehensive heat management can be carried out on diversified components, and the battery pack can be directly heated by the aid of the waste heat.

Description

technical field [0001] The invention relates to a heat management system for an electric vehicle, which belongs to the technical field of vehicles. Background technique [0002] Today, with the rapid development of electric vehicle technology, the driving pleasure, cruising range and comfort of electric vehicles are constantly improving. The realization of these functions is inseparable from the utilization of electric energy. As the key power components of electric vehicles, power batteries and motors, especially the power batteries as the main energy source of electric vehicles, their performance has become one of the keys restricting the upgrading and development of the electric vehicle industry. [0003] Although the capacity of the current battery pack continues to increase, the internal resistance of the battery continues to decrease, and the consistency of battery parameters continues to improve, the high heat emitted by it still cannot be underestimated. The accumu...

Claims

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Application Information

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IPC IPC(8): B60L11/18H01M10/613H01M10/615H01M10/625
CPCH01M10/613H01M10/615H01M10/625B60L58/26B60L58/27H01M2220/20Y02T10/70Y02E60/10
Inventor 阮琳王宇
Owner INST OF ELECTRICAL ENG CHINESE ACAD OF SCI
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