Special stainless steel plate for new energy battery

Abstract

The utility model discloses a special stainless steel plate for a new energy battery. The special stainless steel plate comprises a stainless steel base layer, two impact-resistant layers, two weather-resistant layers and two heat-conducting layers, first through holes are formed in the two anti-impact layers; second through holes are formed in the two weather-proof layers; the two heat conduction layers are respectively stacked on the surfaces of the corresponding weather-proof layers. The anti-impact layer and the weather-proof layer are arranged on the stainless steel base layer, the anti-impact layer can improve the anti-impact capacity of the plate, the weather-proof layer effectively delays aging of plastic of the anti-impact layer, then the second through holes are matched to be communicated with the first through holes in an aligned mode, and the heat conduction columns penetrate through the corresponding first through holes and the corresponding second through holes to make contact with the stainless steel base layer. And one heat conduction layer can directly transmit heat to the stainless steel base layer, then the stainless steel base layer transmits the heat to the other heat conduction layer, and finally the other heat conduction layer transmits the heat to the outside, so that the heat dissipation efficiency is improved, the heat is timely dissipated to the outside, the lithium battery is prevented from being burnt due to overheating, and safety accidents are effectively prevented.

Description

Technical Field

[0001] This utility model relates to the field of sheet metal technology, and in particular to a stainless steel sheet metal specifically for new energy batteries. Background Technology

[0002] Lithium-ion batteries are rechargeable batteries that primarily function by the movement of lithium ions between the positive and negative electrodes. During charging and discharging, Li... + Intercalation and deintercalation back and forth between the two electrodes: During charging, Li + Lithium-ion batteries deintercalate from the positive electrode, pass through the electrolyte, and intercalate into the negative electrode, which is then in a lithium-rich state; the process is reversed during discharge. Secondary batteries, represented by lithium-ion batteries, possess advantages such as high operating voltage, high energy density, good safety, and no memory effect, and have achieved great success in portable electronic devices, new energy vehicles, and hybrid vehicles.

[0003] In recent years, with the increasing popularity of new energy vehicles among consumers, their penetration rate has been continuously improving. Consequently, lithium-ion battery technology has also been constantly advancing. Improving the energy density and fast-charging capabilities of lithium-ion batteries is crucial for enhancing the efficiency of new energy vehicles. However, as the charging power of new energy vehicles has increased from 250kW to 350kW and the charging voltage from 400V to 800V, the charging and discharging power and voltage of lithium batteries have also increased. This results in a significant amount of heat generated during charging and discharging, but poor heat dissipation. If this heat cannot be dissipated in time, it can easily lead to overheating and combustion of the lithium battery, causing safety accidents. Therefore, it is necessary to propose a new solution to address these issues. Utility Model Content

[0004] In view of this, the present invention addresses the deficiencies of the existing technology and its main purpose is to provide a special stainless steel plate for new energy batteries, which can be used as a lithium battery shell material. This effectively solves the problem that existing lithium batteries have poor heat dissipation performance, which can easily lead to overheating and combustion, causing safety accidents.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A stainless steel sheet for new energy batteries includes a stainless steel base layer, two impact-resistant layers, two weather-resistant layers, and two thermally conductive layers. The two impact-resistant layers are respectively stacked on the two surfaces of the stainless steel base layer, and each impact-resistant layer has a first through hole. The two weather-resistant layers are respectively stacked on the surface of the corresponding impact-resistant layer, and each weather-resistant layer has a second through hole, which is directly opposite and connected to the first through hole. The two thermally conductive layers are respectively stacked on the surface of the corresponding weather-resistant layer, and each thermally conductive layer has a thermally conductive column, which passes through the corresponding first through hole and the corresponding second through hole and contacts the stainless steel base layer.

[0007] As a preferred option, both impact-resistant layers are made of ABS material.

[0008] As a preferred option, both weather-resistant layers are made of nylon.

[0009] As a preferred embodiment, both thermally conductive layers are made of thermally conductive silicone.

[0010] As a preferred embodiment, both thermally conductive layers are filled with flame-retardant fillers, such as magnesium hydroxide, aluminum hydroxide, nano-silica, and nano-alumina.

[0011] As a preferred embodiment, there are multiple first through holes arranged in a matrix, and there are also multiple second through holes arranged in a matrix, with each second through hole directly connected to a corresponding first through hole.

[0012] Compared with the prior art, this utility model has obvious advantages and beneficial effects. Specifically, as can be seen from the above technical solution:

[0013] By setting an impact-resistant layer and a weather-resistant layer on a stainless steel base, the impact-resistant layer can improve the impact resistance of the plate, and the weather-resistant layer can effectively delay the aging of the plastic in the impact-resistant layer. In addition, the second through hole is directly connected to the first through hole, and the heat-conducting column passes through the corresponding first through hole and the corresponding second through hole to contact the stainless steel base. This allows one heat-conducting layer to directly transfer heat to the stainless steel base, and then from the stainless steel base to the other heat-conducting layer. Finally, the other heat-conducting layer transfers the heat to the outside, improving heat dissipation efficiency. This can dissipate the heat generated by the lithium battery to the outside in a timely manner, preventing the lithium battery from overheating and burning, and effectively preventing safety accidents.

[0014] To more clearly illustrate the structural features and effects of this utility model, the following detailed description is provided in conjunction with the accompanying drawings and specific embodiments: Attached Figure Description

[0015] Figure 1 This is a cross-sectional view of a preferred embodiment of the present invention.

[0016] Explanation of reference numerals in the attached diagram:

[0017] 10. Stainless steel base layer; 20. Impact-resistant layer

[0018] 21. First through hole; 30. Weather-resistant layer

[0019] 31. Second through hole; 40. Thermal conductive layer

[0020] 41. Heat-conducting column; 42. Flame-retardant filler. Detailed Implementation

[0021] Please refer to Figure 1 As shown, it illustrates the specific structure of a preferred embodiment of the present invention, which includes a stainless steel base layer 10, two impact-resistant layers 20, two weather-resistant layers 30, and two thermally conductive layers 40.

[0022] The two impact-resistant layers 20 are respectively stacked on the two surfaces of the stainless steel base layer 10, and each of the two impact-resistant layers 20 has a first through hole 21. In this embodiment, both impact-resistant layers 20 are made of ABS material. In addition, there are multiple first through holes 21, and the multiple first through holes 21 are arranged in a matrix.

[0023] The two weather-resistant layers 30 are respectively stacked on the surface of the corresponding impact-resistant layer 20. Both weather-resistant layers 30 are provided with a second through hole 31, which is directly connected to the first through hole 21. In this embodiment, both weather-resistant layers 30 are made of nylon. In addition, there are multiple second through holes 31, which are arranged in a matrix. Each second through hole 31 is directly connected to the corresponding first through hole 21.

[0024] The two thermally conductive layers 40 are respectively stacked on the surface of the corresponding weather-resistant layer 30. Both thermally conductive layers 40 have thermally conductive pillars 41, which pass through the corresponding first through hole 21 and the corresponding second through hole 31 and contact the stainless steel base layer 10. In this embodiment, both thermally conductive layers 40 are made of thermally conductive silicone. Both thermally conductive layers 40 are filled with flame-retardant filler 42, which can be selected from magnesium hydroxide, aluminum hydroxide, nano silica and nano alumina, etc.

[0025] The manufacturing process of this embodiment is described in detail below:

[0026] First, two impact-resistant layers 20 are coated and formed on both surfaces of the stainless steel base 10. Then, two weather-resistant layers 30 are coated and formed on the corresponding surfaces of the impact-resistant layers 20. Next, holes are made using equipment, and the weather-resistant layers 30 and the impact-resistant layers 20 are polished in sequence to form a second through hole 31 and a first through hole 21. Finally, a heat-conducting layer 40 is coated and formed. The first through hole 21 and the second through hole 31 are filled with the heat-conducting layer 40, i.e., heat-conducting pillars 41. The heat-conducting pillars 41 pass through the corresponding first through hole 21 and the corresponding second through hole 31 and contact the stainless steel base 10.

[0027] The key design feature of this invention is that by setting an impact-resistant layer and a weather-resistant layer on a stainless steel base, the impact-resistant layer can improve the impact resistance of the plate, and the weather-resistant layer can effectively delay the aging of the plastic in the impact-resistant layer. Furthermore, with the second through-hole directly connected to the first through-hole, and the heat-conducting column passing through the corresponding first and second through-holes and contacting the stainless steel base, one heat-conducting layer can directly transfer heat to the stainless steel base, which then transfers it to another heat-conducting layer, and finally, the other heat-conducting layer transfers the heat to the outside, improving heat dissipation efficiency. This allows the heat generated by the lithium battery to be dissipated to the outside in a timely manner, preventing the lithium battery from overheating and burning, and effectively preventing safety accidents.

[0028] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A stainless steel sheet specifically for new energy batteries, characterized in that: It includes a stainless steel base layer, two impact-resistant layers, two weather-resistant layers, and two thermally conductive layers. The two impact-resistant layers are respectively stacked on the two surfaces of the stainless steel base layer, and each of the two impact-resistant layers has a first through hole. The two weather-resistant layers are respectively stacked on the surface of the corresponding impact-resistant layer, and each of the two weather-resistant layers has a second through hole, which is directly opposite and connected to the first through hole. The two thermally conductive layers are respectively stacked on the surface of the corresponding weather-resistant layer, and each of the two thermally conductive layers has a thermally conductive column, which passes through the corresponding first through hole and the corresponding second through hole and contacts the stainless steel base layer.

2. The stainless steel sheet for new energy batteries according to claim 1, characterized in that: Both impact-resistant layers are made of ABS material.

3. The stainless steel sheet for new energy batteries according to claim 1, characterized in that: Both weather-resistant layers are made of nylon.

4. The stainless steel sheet for new energy batteries according to claim 1, characterized in that: Both thermally conductive layers are made of thermally conductive silicone.

5. The stainless steel sheet for new energy batteries according to claim 1, characterized in that: Both thermally conductive layers are filled with flame-retardant filler.

6. The stainless steel sheet for new energy batteries according to claim 1, characterized in that: There are multiple first through holes arranged in a matrix. There are also multiple second through holes arranged in a matrix. Each second through hole is directly connected to a corresponding first through hole.

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