Lithium battery built-in heat pipe heat dissipation structure
A technology of heat dissipation structure and lithium battery, which is applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of insufficient cooling effect and large volume of heat dissipation system, and achieve the effect of low cost, simple overall structure and improved heat dissipation performance
Pending Publication Date: 2021-04-30
NANCHANG UNIV
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Problems solved by technology
[0003] In order to solve the above-mentioned problem that the cooling system of the battery module is relatively large and the cooling effect is not obvious enough, the present invention provides a heat dissipation structure with built-in heat pipes for lithium batteries. Improve the heat dissipation performance of lithium batteries without changing the overall volume of the battery module
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[0018] Example: see Figure 1-3 .
[0019] Such as figure 1 Shown is a schematic diagram of a cylindrical lithium battery built-in heat pipe heat dissipation structure according to the present invention. The heat dissipation structure includes a lithium battery and a heat pipe 5 arranged in the gap of the lithium battery cell. The battery cell 2 and the battery top cover 3 on the top of the battery case 1 are composed. The battery cell 2 is wound from strip-shaped positive and negative electrodes and separator materials, and the heat pipe 5 is arranged in the center of the battery cell 2 after winding. In the gap between the heat pipe 5 and the bottom of the battery case 1, an insulating and heat-conducting gasket 4 is provided to form the heat dissipation structure of the built-in heat pipe of the lithium battery.
[0020] Such as figure 2 As shown, the heat pipe 5 includes a heat pipe housing 51, a vacuum cavity 53, a liquid-absorbing core 54 and a liquid medium 55, the ...
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The invention provides a lithium battery built-in heat pipe heat dissipation structure, which comprises a lithium battery and a heat pipe arranged in a lithium battery cell gap. The lithium battery is composed of a battery shell, a battery cell in the battery shell and a battery top cover at the top of the battery shell, the battery cell is formed by winding a strip-shaped positive electrode, a strip-shaped negative electrode and a diaphragm material, the heat pipe is arranged in a gap formed in the center of the wound battery cell. An insulating heat-conducting gasket is arranged between the heat pipe and the bottom of the battery shell to form the built-in heat pipe heat dissipation structure of the lithium battery. The gap formed in the center of the wound battery cell is fully utilized, and the heat pipe is arranged in the gap, so that the fixing effect of arranging a hollow needle in a traditional battery cell can be achieved, heat generated in the battery can be conducted to the two ends of the battery and then dissipated out of the battery, and the heat dissipation performance of the battery is improved under the condition that the overall size of the battery module is not changed.
Description
technical field [0001] The invention relates to the technical field of battery heat management, in particular to a heat dissipation structure with a built-in heat pipe for a lithium battery. Background technique [0002] With the development of electronic technology, lithium-ion batteries have been widely used due to their advantages such as high specific power, long cycle life, good safety performance and no pollution. The more common way to make lithium batteries is to use two methods: winding type and laminated type. Among them, wound cylindrical lithium batteries are widely used in new energy electric vehicles. In order to further improve performance and reduce costs, cylindrical power lithium batteries are developing towards larger cell volumes and higher charging and discharging currents, but this increases the risk of battery thermal runaway, causing greater safety hazards and damaging battery life. In order to prevent thermal runaway and improve battery life, elec...
Claims
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Login to View More IPC IPC(8): H01M10/613H01M10/6552H01M10/0525H01M10/6554H01M10/655
CPCH01M10/0525H01M10/613H01M10/655H01M10/6552H01M10/6554Y02E60/10
Inventor 张莹高焱徐勋徐猛李文彬雷杰黄逸宸李志豪肖刚
Owner NANCHANG UNIV