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Heat exchange structure with annular fins and heat dissipation device with the heat exchange structure

A technology of heat exchange structure and heat dissipation device, which is applied to electrical components, electrochemical generators, secondary batteries, etc., can solve the problems of excessive weight, bulky volume and complex process of heat dissipation fins, and achieves material cost and manufacturing cost. Reduction, small size and weight, enhanced heat transfer effect

Active Publication Date: 2020-07-10
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The heat dissipation fins of this patent are prepared by extrusion process, which is relatively complex and time-consuming, and the heat dissipation fins produced are too heavy and bulky, so they cannot be used in power plants that require high weight and volume, such as automobiles. battery system

Method used

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  • Heat exchange structure with annular fins and heat dissipation device with the heat exchange structure
  • Heat exchange structure with annular fins and heat dissipation device with the heat exchange structure
  • Heat exchange structure with annular fins and heat dissipation device with the heat exchange structure

Examples

Experimental program
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Effect test

Embodiment 1

[0044] A heat exchange structure with annular fins, the structure is as figure 1 As shown, the heat exchange structure is used to strengthen the heat dissipation capacity of the heat generating device to the external environment. The heat exchange structure includes the heat generating device 1, the interface thermally conductive adhesive layer 5, the winding tape 2, and the heat conducting tape 3 from the inside to the outside. There are 4 annular fins 4 on 3, among which the material of the winding belt 2, the heat conducting belt 3 and the annular fin 4 is aluminum, the heat conducting belt 3 and the winding belt 2 are welded and connected, and the material of the interface thermal conductive adhesive layer 5 is EA9189. Among them, the heat transfer structure used in the heat transfer structure such as figure 2 , image 3 As shown, the heating belt 3 can be a continuous heating belt or a disconnected heating belt.

Embodiment 2

[0046] A heat exchange structure with annular fins, the structure is as Figure 4 As shown, the heat exchange structure is to directly bend the heat conducting belt 3 to form four annular fins 4, which are fixed on the heat generating device 1, and the annular fin 4 is shaped as Figure 5 , Image 6 As shown, the annular fin 4 can be elliptical or linear. The shape of the annular fin 4 can be arbitrarily selected according to the requirements of the heat exchange capacity, as long as it extends outward on the basis of the heat conducting belt 3. can.

Embodiment 3

[0048] A heat exchange structure with ring-shaped fins. Its structure is similar to that of Embodiment 1. The difference is that there are 8 ring-shaped fins in this embodiment. The specific structure is as Figure 7 Shown.

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Abstract

The invention relates to a heat exchange structure with annular fins, which is used for improving heat dissipation capability of a heat generation device on an external environment. The heat exchange structure comprises the heat generation device and a heat conduction tape, wherein the heat conduction tape is wound around the heat generation device, and one group or multiple groups of annular fins are arranged at the outer side of the heat conduction tape. The invention also relates to a heat dissipation device having the heat exchange structure with the annular fins. The heat dissipation device comprises a box body and multiple groups of heat exchange structures, the multiple groups of heat exchange structures are arranged in the box body, a heat absorption material is arranged between the box body and the heat exchange structures, and the heat absorption material comprises one of a phase change material, an elastic encapsulating material or insulation heat conduction oil. Compared with the prior art, the heat exchange structure with the annular heat conduction fins has the advantages of excellent heat transfer improvement effect, good impact buffer effect, structure flexibility, light weight, small size and the like, and the composite heat dissipation device is excellent in heat dissipation performance.

Description

Technical field [0001] The present invention relates to the technical field of heat dissipation of power batteries, in particular to a heat exchange structure with annular fins and a heat dissipation device with the heat exchange structure. Background technique [0002] Power batteries such as lithium-ion batteries have high energy density, small size, and long cycle life. They have great application potential and market in motorcycles and electric vehicles. However, as the temperature of lithium-ion batteries increases during charging and discharging, their performance and cycle life are affected. Excessive temperatures can even cause thermal runaway, expansion and cracking of the shell, resulting in spontaneous combustion, explosions and other accidents. The temperature of conventional lithium cobalt oxide batteries needs to be controlled Within 50 degrees Celsius to avoid thermal runaway and improve safety. Although the operating temperature of the lithium iron phosphate batt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/613H01M10/6551H01M10/6561H01M10/6567
CPCH01M10/613H01M10/6551H01M10/6561H01M10/6567Y02E60/10
Inventor 张恒运王兆强邢彦锋夏欣江磊
Owner SHANGHAI UNIV OF ENG SCI
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