A kind of new energy battery pack cell flame-retardant buffer polyurethane foam
By setting up a heat dissipation device between the battery cell and the flame-retardant foam, and using a combination of aluminum foil and heat-conducting columns, the problem of poor heat dissipation of polyurethane foam is solved, achieving efficient heat dissipation and structural stability of the battery cell.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI HUITAI ELECTRONICS CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-06-16
AI Technical Summary
When polyurethane foam is wrapped around the outside of the battery cell, its heat dissipation effect is limited, some heat remains inside, and the external components affect heat dissipation.
A heat dissipation device is adopted, including a heat dissipation copper plate, an aluminum foil plate, and heat conduction columns. The aluminum foil plate absorbs heat through contact with the battery cell, and the heat conduction columns transfer heat to the outside of the flame-retardant foam. Stable installation is achieved by combining fixing blocks and insertion slots.
It improves the heat dissipation efficiency of the battery cell, enhances the structural strength, and avoids displacement without affecting the protective effect of the flame-retardant foam, thus achieving effective heat dissipation.
Smart Images
Figure CN224366969U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of polyurethane foam, and in particular to a flame-retardant and cushioning polyurethane foam for use in the cells of new energy battery packs. Background Technology
[0002] The outside of the battery cell is usually wrapped with polyurethane foam, which mainly serves to conduct heat and dissipate heat, bond and fix the battery, increase safety, and provide insulation protection.
[0003] However, since polyurethane foam is wrapped around the outside of the battery cell and its own heat dissipation effect is limited, some heat will remain inside. In addition, the outside of polyurethane foam is usually equipped with components such as a shell, which can easily affect heat dissipation.
[0004] Therefore, it is necessary to propose a flame-retardant buffer polyurethane foam for new energy battery pack cells to solve the above problems. Utility Model Content
[0005] The purpose of this utility model is to provide a flame-retardant buffer polyurethane foam for new energy battery pack cells, in order to solve the problems that polyurethane foam is wrapped around the outside of the cell, and the heat dissipation effect of polyurethane foam itself is limited, so some heat will be retained inside, and the outer shell and other components of polyurethane foam are generally set on the outside of the cell, which can easily affect heat dissipation.
[0006] To achieve the above objectives, the present invention provides the following technical solution: a flame-retardant buffer polyurethane foam for new energy battery pack cells, comprising a cell body and flame-retardant foam installed on the surface of the cell body, wherein a heat dissipation device is provided between the cell body and the flame-retardant foam.
[0007] The heat dissipation device includes a heat dissipation copper plate and an aluminum foil plate. The aluminum foil plate is fixed to the side of the heat dissipation copper plate near the battery cell body. A heat-conducting column is fixed to the side of the heat dissipation copper plate near the flame-retardant foam. The flame-retardant foam has through holes for the heat-conducting column to pass through. An adhesive layer is provided on the side of the flame-retardant foam near the heat dissipation copper plate. The adhesive layer is adhered to one side of the heat dissipation copper plate.
[0008] Each of the four corners of the top of the heat dissipation copper plate is provided with a fixing block, and the bottom of the battery cell body is provided with an insertion slot corresponding to the fixing block.
[0009] Preferably, the heat dissipation copper plate is provided with a plurality of heat dissipation grooves evenly distributed, with a gap between each pair of heat dissipation grooves, and the heat dissipation grooves penetrate through the bottom and top ends of the heat dissipation copper plate.
[0010] Preferably, an extension plate is provided on both sides of the two long sides of the heat dissipation copper plate, and a spring is provided on the extension plate, the height of the spring being lower than the height of the fixing block.
[0011] Preferably, the height of the extension plate is lower than the height of the heat dissipation copper plate, and the lengths of the heat dissipation copper plate, flame-retardant foam, and battery cell body are the same.
[0012] Preferably, the bottom end of the heat-conducting column extends out of flame-retardant foam, and a PVC sticker is provided on the side of the flame-retardant foam away from the battery cell body.
[0013] Preferably, flame-retardant foam is also installed on the other side of the battery cell body.
[0014] The technical effects and advantages of this utility model are as follows:
[0015] 1. In the actual operation of this utility model, the personnel install the battery cell body and the heat dissipation device. The fixing block on the heat dissipation device is inserted into the insertion slot for fixing. Because the fixing block itself has height, a gap will be generated between the battery cell body and the heat dissipation device. The aluminum foil on the heat dissipation copper plate will fill the gap. The aluminum foil makes contact between the battery cell body and the heat dissipation copper plate, absorbs the heat generated by the battery cell body during operation, and increases the overall structural strength of the battery cell body.
[0016] 2. When the battery cell generates heat during operation, the aluminum foil on the heat dissipation copper plate absorbs the heat and transfers it to the heat dissipation copper plate for heat transfer and heat dissipation. Excess heat can be dissipated to the outside of the flame-retardant foam through the heat conduction column. Heat dissipation is completed without affecting the protective effect of the flame-retardant foam. At the same time, the heat conduction column can increase the connection strength between the flame-retardant foam and the heat dissipation copper plate, which can prevent displacement between the flame-retardant foam and the heat dissipation copper plate. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the structure of the flame-retardant buffer polyurethane foam used in the battery cells of a new energy battery pack.
[0018] Figure 2 This is a schematic diagram of the heat dissipation groove of this utility model.
[0019] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle.
[0020] In the diagram: 1. Battery cell body; 2. Spring; 3. Heat dissipation device; 4. Aluminum foil plate; 5. Fixing block; 6. Extension plate; 7. Heat-conducting column; 8. Through hole; 9. Flame-retardant foam; 10. Heat dissipation groove; 11. Insertion groove; 12. Heat dissipation copper plate. Detailed Implementation
[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0022] This utility model provides, for example Figure 1 - Figure 3 The invention described is a flame-retardant cushioning polyurethane foam for new energy battery pack cells, comprising a cell body 1 and flame-retardant foam 9 installed on the surface of the cell body 1. A heat dissipation device 3 is provided between the cell body 1 and the flame-retardant foam 9. Flame-retardant foam 9 is also installed on the other side of the cell body 1. The flame-retardant foam 9 can protect the outside of the cell body 1, providing both cushioning and flame-retardant effects.
[0023] The heat dissipation device 3 includes a heat dissipation copper plate 12 and an aluminum foil plate 4. The aluminum foil plate 4 is fixed to the side of the heat dissipation copper plate 12 near the battery cell body 1. A heat conduction column 7 is fixed to the side of the heat dissipation copper plate 12 near the flame retardant foam 9. A through hole 8 is opened on the flame retardant foam 9 for the heat conduction column 7 to pass through. An adhesive layer is provided on the side of the flame retardant foam 9 near the heat dissipation copper plate 12. The adhesive layer is adhered to one side of the heat dissipation copper plate 12.
[0024] The top four corners of the heat dissipation copper plate 12 are provided with fixing blocks 5, and the bottom of the battery cell body 1 is provided with an insertion slot 11 corresponding to the fixing blocks 5.
[0025] In the actual operation of this utility model, the personnel install the battery cell body 1 and the heat dissipation device 3. The fixing block 5 on the heat dissipation device 3 is inserted into the insertion slot 11 for fixing. Because the fixing block 5 itself has height, a gap will be generated between the battery cell body 1 and the heat dissipation device 3. The aluminum foil plate 4 on the heat dissipation copper plate 16 will fill the gap, and the aluminum foil plate 4 will make contact between the battery cell body 1 and the heat dissipation copper plate 12.
[0026] When the battery cell body 1 generates heat during operation, the aluminum foil plate 4 on the heat dissipation copper plate 12 absorbs the heat and transfers it to the heat dissipation copper plate 12 for heat transfer and heat dissipation. Excess heat can be dissipated to the outside of the flame-retardant foam 9 through the heat conduction column 8. Heat dissipation is completed without affecting the protective effect of the flame-retardant foam 9. At the same time, the heat conduction column 8 can increase the connection strength between the flame-retardant foam 9 and the heat dissipation copper plate 12, which can prevent displacement between the flame-retardant foam 9 and the heat dissipation copper plate 12.
[0027] Multiple heat dissipation slots 10 are evenly distributed on the heat dissipation copper plate 12, with a gap between each pair of heat dissipation slots 10. The heat dissipation slots 10 penetrate the bottom and top of the heat dissipation copper plate 12. Extension plates 6 are provided on both sides of the two long sides of the heat dissipation copper plate 12, and springs 2 are provided on the extension plates 6. The height of the springs 2 is lower than the height of the fixing block 5.
[0028] The extension plate 6 is lower than the height of the heat dissipation copper plate 12, and the lengths of the heat dissipation copper plate 12, the flame-retardant foam 9, and the battery cell body 1 are the same.
[0029] The bottom end of the heat-conducting column 7 extends out of the flame-retardant foam 9, and a PVC sticker is provided on the side of the flame-retardant foam 9 away from the battery cell body 1.
Claims
1. A flame-retardant cushioning polyurethane foam for new energy battery pack cells, comprising a cell body (1) and flame-retardant foam (9) mounted on the surface of the cell body (1), characterized in that: A heat dissipation device (3) is provided between the battery cell body (1) and the flame-retardant foam (9). The heat dissipation device (3) includes a heat dissipation copper plate (12) and an aluminum foil plate (4). The aluminum foil plate (4) is fixed to the side of the heat dissipation copper plate (12) near the battery cell body (1). A heat-conducting column (7) is fixed to the side of the heat dissipation copper plate (12) near the flame-retardant foam (9). A through hole (8) is opened on the flame-retardant foam (9) for the heat-conducting column (7) to pass through. An adhesive layer is provided on the side of the flame-retardant foam (9) near the heat dissipation copper plate (12). The adhesive layer is adhered to one side of the heat dissipation copper plate (12). The top four corners of the heat dissipation copper plate (12) are provided with fixing blocks (5), and the bottom of the battery cell body (1) is provided with an insertion slot (11) corresponding to the fixing blocks (5).
2. The flame-retardant cushioning polyurethane foam for new energy battery pack cells according to claim 1, characterized in that: The heat dissipation copper plate (12) is provided with a plurality of heat dissipation grooves (10) evenly distributed, and a gap is provided between each pair of heat dissipation grooves (10). The heat dissipation grooves (10) penetrate through the bottom and top of the heat dissipation copper plate (12).
3. The flame-retardant cushioning polyurethane foam for new energy battery pack cells according to claim 2, characterized in that: Extension plates (6) are provided on both sides of the two long sides of the heat dissipation copper plate (12), and springs (2) are provided on the extension plates (6). The height of the springs (2) is lower than the height of the fixing block (5).
4. The flame-retardant cushioning polyurethane foam for new energy battery pack cells according to claim 3, characterized in that: The extension plate (6) is lower than the height of the heat dissipation copper plate (12), and the lengths of the heat dissipation copper plate (12), flame-retardant foam (9) and battery cell body (1) are the same.
5. The flame-retardant cushioning polyurethane foam for new energy battery pack cells according to claim 1, characterized in that: The bottom end of the heat-conducting column (7) extends out of the flame-retardant foam (9), and a PVC sticker is provided on the side of the flame-retardant foam (9) away from the battery cell body (1).
6. The flame-retardant cushioning polyurethane foam for new energy battery pack cells according to claim 1, characterized in that: Flame-retardant foam (9) is also installed on the other side of the battery cell body (1).