New energy automobile power battery system based on heat pipe and phase change material

A new energy vehicle and phase change material technology, applied in the field of new energy vehicle power batteries, can solve the problems of increasing pipeline freezing, bursting, and difficulty in solving battery thermal management problems at low temperatures, and achieve good temperature uniformity and fast heat transfer Effect

Inactive Publication Date: 2019-06-25
HANGZHOU DIANZI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the insulation requirements of batteries at low temperatures have not been fully considered, and the use of cooling water at low temperatures will also increase the freezing of pipes, with the risk of clogging or even bursting
Therefore, this solution is difficult to solve the thermal management problem of the battery at low temperature

Method used

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  • New energy automobile power battery system based on heat pipe and phase change material
  • New energy automobile power battery system based on heat pipe and phase change material
  • New energy automobile power battery system based on heat pipe and phase change material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Embodiment 1. The temperature in some areas in winter is relatively low, which has a huge impact on the operation and storage of the power battery 1. The present invention utilizes a large amount of heat generated by the battery 1 during operation and stores this heat in the phase change material 6 through the transfer of the heat pipe 2. When the battery 1 stops operating and the temperature drops to a certain level, the heat stored in the phase change material 6 will It is transferred to the battery box 3 through the heat pipe 2 so as to achieve the purpose of heat preservation.

Embodiment 2

[0047] Embodiment 2. The heat preservation process after the electric vehicle battery 1 stops running is as follows:

[0048] Such as figure 2 As shown, the battery 1 in the electric vehicle battery box 3 is composed of multiple battery cells, which together form a battery pack to provide energy for the electric vehicle. The temperature of the battery 1 rises to a certain extent during operation, the metal frame 55 is heated and expands and contacts the heat pipe 2, and the heat pipe 22 is activated to transfer the generated heat to the outside environment through the heat pipe 22.

[0049] After the battery 1 is discharged and the temperature is gradually reduced to a certain level, the metal frame 55 is cold-shrinked and disconnected from the heat pipe 2, and the heat stored in the phase change material 66 is transferred to the vicinity of the battery 1 for heat preservation of the battery 1.

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Abstract

The invention discloses a new energy automobile power battery system based on a heat pipe and a phase change material. The system comprises a battery box, the phase-change material, a metal frame andthe heat pipe. A battery is arranged in the battery box, and the phase-change material is disposed in the battery box. The metal frame is distributed in the phase-change material in an inserted mode,wherein one end of the metal frame makes contact with the battery, and the other end of the metal frame makes contact with the heat pipe. One end of the heat pipe is inserted into the phase-change material in a penetrating mode, and the other end of the heat pipe makes contact with the external environment. The battery, the phase-change material, the metal frame and the heat pipe are placed in thebattery box. The system has the advantages of high heat transfer speed, good temperature uniformity and energy conservation, can ensure that the battery box is always in a proper temperature range ata low temperature, meets the heat preservation requirement of a battery at the low temperature, and has higher heat conductivity and good temperature uniformity.

Description

Technical field [0001] The invention relates to the field of power batteries for new energy vehicles, in particular to a power battery system for new energy vehicles based on heat pipes and phase change materials. Background technique [0002] With the emergence of energy crisis and environmental pollution, as well as the continuous improvement of the world's awareness of energy conservation and emission reduction, electric vehicles have therefore ushered in unprecedented development opportunities. Because the battery is one of the core components of electric vehicles, it plays a vital role in the battery life and safety of electric vehicles. The cost, life and safety of batteries are inseparable from the thermal management of batteries. The normal use and safe operation of batteries have high requirements on temperature. During the charging and discharging process of the battery, a complex chemical reaction occurs inside the battery, and a large amount of heat is rapidly genera...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M10/613H01M10/615H01M10/625H01M10/653H01M10/6552H01M10/6555H01M10/659
CPCY02E60/10
Inventor 翟盺蒋帅
Owner HANGZHOU DIANZI UNIV
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