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Liquid cooling plate support buffer structure and battery pack

A buffer structure and liquid-cooled plate technology, which is applied to secondary batteries, structural parts, battery pack parts, etc., can solve the problems of poor support structure stability, uneven overall force, deformation and leakage, and improve stability and service life, reduce the risk of deformation leakage, slow recovery of deformation

Pending Publication Date: 2019-07-12
深圳市富程威科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the existing support and buffer solutions have the following disadvantages: First, the liquid-cooled plate needs to be tested for vibration and impact loads. However, as a hard elastic material, the leaf spring can quickly absorb the impact when it is impacted, but the impact it releases will also Great impact on the liquid cold plate
The liquid-cooled plate is supported by multiple leaf springs, resulting in excessive force in some areas of the liquid-cooled plate, uneven overall force, and poor stability of the entire support structure
Secondly, the leaf spring is connected to the box body through mechanical structures such as nuts. When the car is driven for a long time, wear and tear will easily occur between the leaf spring and the box body, and between the leaf spring and the liquid cooling plate.
In particular, the liquid cold plate and the box are generally made of aluminum, there is a risk of deformation and leakage, and the leakage of the liquid medium will seriously endanger the safety of the battery pack
The connection structure between the leaf spring and the box is broken, which will cause the leaf spring to fall off, which will cause the liquid cooling plate to tilt and separate, and the cooling efficiency will deteriorate
In addition, the rebound force generated by the leaf spring is related to the deformation of the leaf spring structure. In order to generate enough rebound force to support the liquid cold plate, the leaf spring needs to be high enough, which will reduce the available space of the battery pack and reduce the capacity of the battery pack.

Method used

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  • Liquid cooling plate support buffer structure and battery pack
  • Liquid cooling plate support buffer structure and battery pack
  • Liquid cooling plate support buffer structure and battery pack

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] This embodiment provides a liquid-cooled plate support and buffer structure 100, which is located between the liquid-cooled plate 3 and the battery pack box (not shown in the figure), and plays a role of supporting and buffering the liquid-cooled plate 3, and can The stability of the battery pack 4 is effectively improved.

[0042] like figure 1 As shown, the liquid-cooled plate support and buffer structure 100 includes an elastic heat-insulating support part 1, one end of the elastic heat-insulated support part 1 is in contact with the liquid-cooled plate 3, and the other end is arranged at the bottom of the battery pack box. In this embodiment, the elastic heat insulation support part 1 and the liquid cooling plate 3 may be in direct surface contact, or may be glued together. Optionally, a first connection part 2 is provided between the elastic heat insulation support part 1 and the liquid cold plate 3 , and one end of the elastic heat insulation support part 1 is bo...

Embodiment 2

[0049] The second embodiment provides a liquid-cooled plate support and buffer structure 100. The main difference between the liquid-cooled plate support and buffer structure 100 and the liquid-cooled plate support and buffer structure 100 in Embodiment 1 is that the structure of the elastic heat-insulating support part 1 is different. .

[0050] Specifically, as figure 1 and image 3 As shown, the elastic heat insulation support part 1 includes a soft rubber foam layer 11 and a hard foam layer 12 connected, the soft rubber foam layer 11 and the liquid cold plate 3 are bonded through the first connecting part 2, and the soft rubber foam layer The area of ​​the layer 11 is equal to the area of ​​the liquid cooling plate 3 , which provides a cushioning effect for the liquid cooling plate 3 , and the rigid foam layer 12 is arranged at the bottom of the battery pack box to provide support for the liquid cooling plate 3 .

[0051] Furthermore, the soft rubber foam layer 11 and th...

Embodiment 3

[0056] The third embodiment provides a liquid-cooled plate support and buffer structure 100. The main difference between the liquid-cooled plate support and buffer structure 100 and the liquid-cooled plate support and buffer structure 100 in the above-mentioned embodiment 1 and embodiment 2 is that the elastic heat insulation support Part 1 has a different structure.

[0057] like Figure 4-Figure 12 As shown, in this embodiment, the area of ​​the elastic heat insulating support part 1 is smaller than the area of ​​the liquid cooling plate 3 . The soft rubber foam layer 11 in the elastic heat insulation support part 1 is directly formed on the lower surface of the liquid cooling plate 3, or the soft rubber foam layer 11 is directly formed on the hard foam layer 12, and then installed on the liquid cooling plate 3, or The elastic heat insulation support part 1 includes a bottom film 14 and a soft rubber foam layer 11, the soft rubber foam layer 11 is bonded or formed on the bo...

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Abstract

The invention discloses a liquid cooling plate support buffer structure and a battery pack, and belongs to the technical field of energy storage devices. The liquid cooling plate support buffer structure comprises an elastic heat-insulating support portion, wherein one end of the elastic heat-insulating support portion is in surface contact with a liquid cooling plate, and the other end of the elastic heat insulating support portion is disposed on the bottom of a battery pack box body. The elastic heat-insulating support portion is configured to support and buffer the liquid cooling plate. Firstly, the elastic heat-insulating support portion has a low hardness and certain elasticity, is slowly restorable after deformation, and cannot wear or impact the box body and the liquid cooling platewhen impacted and squeezed, thereby reducing the risk of deformation and leakage of the battery pack. Secondly, the elastic heat-insulating support portion is in surface contact with the liquid cooling plate, and the liquid cooling plate cannot be deformed due to uneven stressed points, thereby avoiding the deformation of the liquid cooling plate due to uneven stressed points when the uneven stressed points is supported by springs, avoiding causing a gap between the liquid cooling plate and the battery pack, and further avoiding affecting the heat dissipation of the battery pack by the liquidcooling plate. In addition, the elastic heat-insulating support portion can be used directly as heat-insulating cotton to save costs.

Description

technical field [0001] The invention relates to the technical field of energy storage devices, in particular to a liquid-cooled plate support buffer structure and a battery pack with the structure. Background technique [0002] The thermal management of electric vehicle power batteries is a key factor in determining their performance, safety, life and cost. The temperature level of a Li-ion battery directly affects its energy and power performance in use. Too high or too low temperature will affect its performance and even cause safety accidents. In addition, the working or storage temperature of the lithium-ion battery will affect its service life. The suitable temperature of the battery is between 10°C and 30°C. Too high or too low temperature will cause a rapid decay of the battery life. Therefore, it is particularly important to maintain the temperature in the battery pack within a certain temperature range. This is mainly achieved through cooling and heating. The com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/10H01M10/613H01M10/625H01M10/6554H01M10/6567H01M50/256
CPCH01M10/613H01M10/625H01M10/6554H01M10/6567H01M50/256Y02E60/10
Inventor 黄俊薛军赵加来
Owner 深圳市富程威科技股份有限公司
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