Dry-wet separated lithium battery pack thermal management system and method

A dry-wet separation and management system technology, applied to secondary batteries, battery/fuel cell control devices, circuits, etc., can solve problems such as low heat dissipation efficiency, large battery damage, and large safety hazards, achieving high heat dissipation efficiency and ensuring The effect of protection

Pending Publication Date: 2020-01-17
赵耀华 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high safety hazards, low heat dissipation efficiency, and large damage to the battery in the prior art, the present invention proposes a dry-wet separation lithium battery pack thermal management system and method

Method used

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  • Dry-wet separated lithium battery pack thermal management system and method
  • Dry-wet separated lithium battery pack thermal management system and method
  • Dry-wet separated lithium battery pack thermal management system and method

Examples

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Embodiment 1

[0036] Such as Figure 1-3As shown, a dry-wet separation battery pack thermal management system in this embodiment includes horizontal cells inside the battery pack and a liquid-cooled plate-tube heat exchanger 2 attached to the outside of the battery pack casing 1. The batteries in the battery pack are divided into four layers, each layer has three vertically and three horizontally. The upper and lower surfaces of the three battery units 5 in each horizontal layer are attached to two sets of micro heat pipe arrays 6 extending in the lateral direction. The micro heat pipe array 6 is a flat heat conductor with a porous structure formed by extrusion of a metal material, and has a plurality of micro heat pipes arranged side by side that are not connected to each other and operate independently, and the hydraulic diameter of each micro heat pipe is 1mm. The internal phase change working medium is a non-conductive medium. A solid metal strip with a width of 3-10 mm and the same l...

Embodiment 2

[0045] The internal structure of the battery of this embodiment is as Figure 4 As shown, only the lower side has the micro heat pipe array, both sides have the protruding part 61 and are bent upwards, and other structures and principles are consistent with the first embodiment.

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Abstract

The invention discloses a dry-wet separated lithium battery pack thermal management system and method. The system comprises one or more layers of batteries and / or battery modules in the battery pack,a battery pack shell and a liquid cooling plate-tube heat exchanger, wherein a micro heat pipe array is attached to the upper surface and / or the lower surface of the battery and / or the battery module,the part attached to the surface of the battery and / or the battery module is an evaporation section, at least one end of the micro heat pipe array extends out of the surface of the battery and / or thebattery module, and the extending part serves as a condensation section to be attached to a battery pack shell; the battery pack shell surrounds the battery pack and is of a closed structure, and a heat conduction partition plate is at least arranged at the position corresponding to the condensation section; a substrate of the liquid cooling plate-tube heat exchanger is sealed and is completely physically isolated from the battery and / or the battery module; and the liquid cooling plate-tube heat exchanger is at least correspondingly attached to the outer surface of the heat conducting partition plate and is connected with a refrigerating system outside the battery pack. The system has the advantages of high heat dissipation efficiency, dry-wet separation and liquid leakage prevention.

Description

technical field [0001] The invention relates to a dry-wet separation battery pack thermal management method and system, belonging to the field of battery pack heat dissipation for electric vehicles. Background technique [0002] The thermal management of lithium battery packs is not only critical to battery life, but also critical to battery safety. [0003] The traditional battery pack thermal management method - air cooling technology not only cannot meet the requirements of the protection level of the lithium battery pack, but also due to the large temperature difference between the inlet and outlet of the air cooling system, resulting in a large temperature difference between the battery cell and the battery cell, which is harmful to the lithium battery. The damage is large, so it is basically useless at present. [0004] The traditional thermal management method of lithium battery packs with high protection level generally adopts the liquid cooling mode. At present, mo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/617H01M10/625H01M10/6552H01M10/6554H01M10/6556H01M10/6567H01M10/6571B60L58/26B60L58/27
CPCB60L58/26B60L58/27H01M10/617H01M10/625H01M10/6552H01M10/6554H01M10/6556H01M10/6567H01M10/6571Y02E60/10Y02T10/70
Inventor 赵耀华徐红霞
Owner 赵耀华
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