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Battery module and battery pack thermal management device and system

A technology for battery modules and battery packs, applied in secondary batteries, circuits, electrical components, etc., can solve the problems of safe heat transfer medium leakage, large flow resistance of heat transfer medium, and reduced heat transfer efficiency, etc., to improve safety. , The effect of improving temperature uniformity and high energy storage density

Pending Publication Date: 2022-07-08
IAT AUTOMOBILE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a battery module, battery pack thermal management device and system to solve the problem that the flow resistance of the heat transfer medium in the above-mentioned existing solutions is large, which will reduce the heat transfer efficiency, and after the heat transfer medium leaks There are certain technical problems such as potential safety hazards

Method used

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  • Battery module and battery pack thermal management device and system
  • Battery module and battery pack thermal management device and system
  • Battery module and battery pack thermal management device and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1 of the present invention first provides a battery module, which aims to solve the problem that when the existing battery module adopts a water cooling solution, the flow resistance of the heat transfer medium in the cooling flat tube is too large, and there is a certain safety hazard after leakage occurs. question.

[0045] Please refer to Figure 2 to Figure 8 , Figure 2 to Figure 8 An embodiment of the battery module 100 provided by the present invention is shown. The battery module 100 includes a plurality of battery packs 101 that are closely arranged and connected to each other. The battery pack 101 includes a plurality of battery cells 1011 arranged in a staggered or parallel arrangement. . The battery cells 1011 mentioned above can be any of circular batteries, square batteries, heterosexual batteries, and optionally cylindrical batteries; the battery cells 1011 are stacked and combined into corresponding battery packs 101 .

[0046] see Figure...

Embodiment 2

[0063] see Figure 9 , Based on the battery module 100 provided above, the second embodiment of the present invention further provides a battery pack thermal management device 200, the battery pack thermal management device 200 includes:

[0064] At least one battery module 100 as mentioned above;

[0065] The first heat transfer tube 201 is in contact with one side of the heat conducting member 1013;

[0066] The second heat transfer tube 202 is in contact with the other side of the heat conducting member 1013;

[0067] The first heat transfer tube 201 is in contact with the heat collecting end on the upper side of the heat conducting member 1013 to dissipate heat to the cell unit 1011; 1011 is preheated, so that the battery cell 1011 is at a normal working temperature, so as to avoid the battery running at a low temperature and improve the use efficiency of the battery.

[0068] It should be noted that the “heat collecting end” as defined in the embodiments of the present...

Embodiment 3

[0077]Embodiment 3 of the present invention further provides a battery pack thermal management system, including the above-mentioned battery pack thermal management device 200, the system may further include a controller, and the controller can read a precoded program to execute corresponding instructions, wherein the control The device is configured as:

[0078] In the first mode, the first heat transfer pipe 201 is controlled to pass through the heat transfer medium to dissipate heat to the battery module 100;

[0079] In the second mode, the temperature of the second heat transfer tube 202 is controlled to preheat the battery module 100 .

[0080] The first mode includes when the battery module 100 in the vehicle needs to be dissipated, such as when the vehicle is running, and the second mode includes when the battery module 100 of the vehicle needs to be warmed up, such as when the vehicle is cold started.

[0081] In this system, a sensor can be provided on the end face ...

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Abstract

The invention provides a battery module, and a battery pack thermal management device and system, the battery module comprises: a plurality of battery packs, each battery pack comprising a plurality of battery cell units arranged in a staggered or parallel manner; the packaging structure comprises a shell assembly, and the shell assembly is used for packaging the battery pack in the axial direction of the battery pack; the heat conduction piece is arranged between the battery packs and comprises side faces and end faces, the side faces make contact with the outer walls of the battery packs, and the end faces are exposed out of the packaging structure and make contact with the outside, so that the battery packs conduct heat exchange with the outside through the heat conduction piece; wherein the heat conduction piece is of a hollow heat conduction structure in which a phase change material is packaged. The heat conduction piece in the battery module exchanges heat with the cooling device outside the battery module by packaging the phase change material, so that the heat conduction piece is isolated from an external heat transfer medium, the flow resistance of a main loop water channel can be effectively reduced, and meanwhile, the probability of potential safety hazards caused by flow leakage of the heat transfer medium is reduced.

Description

technical field [0001] The invention relates to the application field of battery cell management, in particular to a battery module, a battery pack thermal management device and a system. Background technique [0002] In the prior art, the main heat dissipation structure of the battery module mostly adopts the flat tube liquid cooling scheme. Especially for cylindrical cells, the cooling flat tubes are arranged in series or in parallel between the cells. The cooling flat tubes are serpentine and have a corrugated shape. The core is attached to the inner wall of the cooling flat tube, and the outer wall of the cooling flat tube is wrapped with a layer of insulating tape, which plays the role of heat conduction, so as to realize the heat exchange of the battery core. [0003] like figure 1 As shown in the figure, the internal medium of the cooling flat tube is a heat transfer medium mixed with water and ethylene glycol, which is connected to the external cooling circuit to c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/625H01M10/643H01M10/6552H01M10/6569H01M10/615
CPCH01M10/613H01M10/625H01M10/643H01M10/6552H01M10/6569H01M10/615Y02E60/10
Inventor 姚林
Owner IAT AUTOMOBILE TECH
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