Connection structure of battery cell aluminum bar and upper water-cooling plate

Abstract

The utility model provides a connecting structure of a battery cell aluminum row and an upper water-cooling plate. The connecting structure comprises a battery pack box body, the upper water-cooling plate is arranged at the top of the battery pack box body through a fastener, and the sealing gasket is arranged at the bottom of the upper water-cooling plate. According to the connecting structure of the battery cell aluminum row and the upper water-cooling plate, the aluminum nitride heat conduction block is clamped on the outer surface of the aluminum row, the heat conduction silica gel pads are arranged on the upper side and the lower side of the outer surface of the aluminum nitride heat conduction block, and the aluminum nitride heat conduction block structure is used for connecting the battery cell, the aluminum row and the upper water-cooling plate, so that the connecting structure has high heat conduction performance and high insulativity; the heat of the aluminum row can be quickly transferred to the water-cooling plate, and the water-cooling plate has high insulativity, does not cause short circuit of the battery, improves the connection effect of the battery cell, the aluminum row and the water-cooling plate, and improves the heat dissipation capability of the battery cell and the aluminum row.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of battery heat dissipation, especially a connecting structure of an upper water cooling plate and an aluminum row of battery cell. BACKGROUND

[0002] The existing battery pack is provided with a water cooling plate on the surface of the box body to dissipate heat from the mechanical parts such as the battery cell and the aluminum row arranged inside the battery pack.

[0003] During the charging and discharging process of the battery, part of the heat of the battery cell product will be transferred to the aluminum row, and the aluminum row itself will also generate heat due to overcurrent. However, the water cooling plate is installed on the surface of the battery pack, and there is a certain gap between the battery cell and the aluminum row. No connecting structure is arranged between the battery cell, the aluminum row and the water cooling plate, so the heat of the battery cell and the aluminum row cannot be quickly removed, resulting in poor heat dissipation effect inside the battery pack.

[0004] Therefore, it is necessary to provide a connecting structure of an upper water cooling plate and an aluminum row of battery cell to solve the above technical problems. SUMMARY

[0005] The utility model provides a connecting structure of an upper water cooling plate and an aluminum row of battery cell, solve the heat of the battery cell product in the process of battery charging and discharging part of the heat will be to the aluminum row, and the aluminum row itself overcurrent also will generate heat, but the water cooling plate is installed on the surface of the battery pack, and there is a certain gap between the battery cell and the aluminum row. No connecting structure is arranged between the battery cell, the aluminum row and the water cooling plate, so the heat of the battery cell and the aluminum row cannot be quickly removed, resulting in poor heat dissipation effect inside the battery pack.

[0006] To solve the above technical problems, the utility model provides a connecting structure of an upper water cooling plate and an aluminum row of battery cell, which comprises: a battery pack box body;

[0007] An upper water cooling plate is arranged on the top of the battery pack box body through a fastener;

[0008] A sealing gasket is arranged on the bottom of the upper water cooling plate, and the bottom of the battery pack box body is provided with a bottom water cooling plate through a fastener;

[0009] A battery cell is arranged in the inside of the battery pack box body, and an aluminum row is arranged on the top of the battery cell. An aluminum nitride heat conduction block is arranged on the outer surface of the aluminum row, and heat conduction silica gel pads are arranged on the upper and lower sides of the outer surface of the aluminum nitride heat conduction block.

[0010] Preferably, the bottom of the upper water cooling plate is fixedly connected with a cooling water outlet on one side, the top of the bottom water cooling plate is fixedly connected with a cooling water inlet on one side, and the surfaces of the upper water cooling plate and the bottom water cooling plate are provided with cooling pipelines.

[0011] Preferably, an upper and lower water cooling plate connecting pipeline is fixedly connected between the upper water cooling plate and the bottom water cooling plate.

[0012] Preferably, the aluminum nitride heat-conducting block is provided with a connecting plate fixedly installed on the bottom of the aluminum nitride heat-conducting block.

[0013] Preferably, the sliding hole is provided with a sliding groove on both sides of the middle of the sliding hole inner wall, and a sliding rod is fixedly installed in the sliding groove.

[0014] Preferably, the other side of the outer surface of the sliding rod is provided with a mounting device, and the mounting device comprises a top plate, a top column and an extrusion block.

[0015] Preferably, the top column is attached to the bottom of the heat-conducting silica gel pad on the bottom of the aluminum nitride heat-conducting block.

[0016] Compared with the related art, the connecting structure of the electric core aluminum row and the upper water cooling plate has the following beneficial effects:

[0017] The connecting structure of the electric core aluminum row and the upper water cooling plate comprises an aluminum row, an aluminum nitride heat-conducting block, a heat-conducting silica gel pad and an upper water cooling plate. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 The structure of the connecting structure of the electric core aluminum row and the upper water cooling plate is shown in the first embodiment of the utility model.

[0019] Figure 2 The structure of the connecting structure of the electric core aluminum row and the upper water cooling plate is shown in the first embodiment of the utility model. Figure 1 The structure of the connecting structure of the electric core aluminum row and the upper water cooling plate is shown in the first embodiment of the utility model.

[0020] Figure 3 The structure of the connecting structure of the electric core aluminum row and the upper water cooling plate is shown in the first embodiment of the utility model. Figure 1 The structure of the connecting structure of the electric core aluminum row and the upper water cooling plate is shown in the first embodiment of the utility model.

[0021] Figure 4 The structure of the connecting structure of the electric core aluminum row and the upper water cooling plate is shown in the first embodiment of the utility model. Figure 3 The structure of the connecting structure of the electric core aluminum row and the upper water cooling plate is shown in the first embodiment of the utility model.

[0022] Figure 5A structure schematic view of a second embodiment of the connecting structure of the aluminum row of the battery cell and the upper water cooling plate is provided by the utility model.

[0023] Figure 6 For Figure 5 The enlarged schematic view at C shown in the figure.

[0024] The figure mark: 1, battery pack box body, 2, upper water cooling plate, 3, bottom water cooling plate, 4, upper and lower water cooling plate connecting pipeline, 5, cooling water inlet, 6, cooling pipeline, 7, sealing gasket, 8, cooling water outlet, 9, battery cell, 10, aluminum row, 11, aluminum nitride heat conduction block, 12, heat conduction silica gel pad, 13, connecting plate, 14, cross plate, 15, mounting device, 151, top plate, 152, top column, 153, extrusion block, 16, sliding hole, 17, sliding groove, 18, sliding rod, 19, spring. Specific implementation

[0025] The utility model is further explained below in combination with the drawings and implementation. Example

[0026] Please combine with Figure 1 , Figure 2 , Figure 3 And Figure 4 Among them, Figure 1 A structure schematic view of a first embodiment of the connecting structure of the aluminum row of the battery cell and the upper water cooling plate is provided by the utility model. Figure 2 For Figure 1 The enlarged schematic view at A shown in the figure. Figure 3 The sectional view schematic view of the battery pack box body shown in the figure. Figure 1 The enlarged schematic view at B shown in the figure. The connecting structure of the aluminum row of the battery cell and the upper water cooling plate includes: battery pack box body 1. Figure 4 Figure 3 The enlarged schematic view at B shown in the figure. The connecting structure of the aluminum row of the battery cell and the upper water cooling plate includes: battery pack box body 1.

[0027] Upper water cooling plate 2, the upper water cooling plate 2 is set up at the top of the battery pack box body 1 through fastener.

[0028] Sealing gasket 7, the sealing gasket 7 is set up at the bottom of the upper water cooling plate 2, and the bottom of the battery pack box body 1 is provided with bottom water cooling plate 3 through fastener.

[0029] Battery cell 9, the battery cell 9 is set up in the inside of the battery pack box body 1, the top of the battery cell 9 is provided with aluminum row 10, the outer surface of the aluminum row 10 is provided with aluminum nitride heat conduction block 11, and the upper and lower sides of the outer surface of the aluminum nitride heat conduction block 11 are provided with heat conduction silica gel pad 12.

[0030] ​The upper water cooling plate 2 is fixedly connected with a cooling water outlet 8 at one side of the bottom, and the bottom water cooling plate 3 is fixedly connected with a cooling water inlet 5 at one side of the top, and the surfaces of the upper water cooling plate 2 and the bottom water cooling plate 3 are provided with cooling pipelines 6.

[0031] The upper water cooling plate 2 and the bottom water cooling plate 3 are fixedly connected with an upper and lower water cooling plate connecting pipeline 4.

[0032] The aluminum nitride heat-conducting block 11 has relatively high hardness, in order to ensure that the upper water cooling plate and the lower aluminum row 10 are directly attached without air gap, a heat-conducting silica gel pad 12 or heat-conducting glue is added above and below, and no matter the heat-conducting silica gel pad 12 or the heat-conducting glue, the thickness should not be too thick, because the heat-conducting performance of these is not as high as that of the aluminum nitride, and the increase in thickness will affect the overall heat dissipation performance.

[0033] The aluminum nitride heat-conducting block 11 can be designed as a buckle shape and is clamped above the aluminum row to play a limiting role.

[0034] The aluminum row 10 is designed with a bending, and the bending can serve as stress release when the battery cell 9 expands and can also serve as limiting in the front and back directions of the aluminum nitride heat-conducting block 11.

[0035] Considering that the number of battery cells inside the battery pack is large and the weight can be hundreds of kilograms, the bottom alone relies on the water cooling plate and can be deformed, and a bottom support plate is added at the bottom of the bottom water cooling plate 3.

[0036] The working principle of the connection structure of the battery cell aluminum row and the upper water cooling plate is as follows:

[0037] In work, first, the aluminum row 10 is clamped with the aluminum nitride heat-conducting block 11 on the outer surface, the upper and lower sides of the surface of the aluminum nitride heat-conducting block 11 are both installed with the heat-conducting silica gel pad 12, the direct attachment of the upper water cooling plate and the lower aluminum row 10 is ensured without air gap, and the connection heat dissipation efficiency with the water cooling plate is improved.

[0038] The upper water cooling plate 2 is installed on the top of the battery pack box body 1 through a fastener, and the bottom of the upper water cooling plate 2 is installed with the sealing gasket 7 attached to the battery pack box body 1 to improve the sealing effect.

[0039] Compared with the related art, the connection structure of the battery cell aluminum row and the upper water cooling plate has the following beneficial effects:

[0040] The utility model provides a kind of connection structure of battery cell aluminum row and upper water cooling plate, by clamping with aluminium nitride heat-conducting block 11 on the outer surface of aluminum row 10, aluminium nitride heat-conducting block 11 outer surface's upper and lower two sides install heat-conducting silica gel pad 12, aluminium nitride heat-conducting block 11 structure is as the connection of battery cell 9, aluminum row 10 and upper water cooling plate 2, with high thermal conductivity and high insulation, both can the heat of aluminum row 10 be quickly transmitted to water cooling plate, also with high insulation, will not cause battery short circuit, improve the connection effect of battery cell 9, aluminum row 10 and water cooling plate, improve the heat dissipation capacity to battery cell 9, aluminum row 10. Embodiment

[0041] Please refer to Figure 5 And Figure 6 Based on the first embodiment of the application, a kind of connection structure of battery cell aluminum row and upper water cooling plate is provided, and the second embodiment of the application proposes another connection structure of battery cell aluminum row and upper water cooling plate. The second embodiment is only the preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the implementation of the first embodiment.

[0042] Specifically, the second embodiment of the application provides a kind of connection structure of battery cell aluminum row and upper water cooling plate, which is different from the first embodiment, a kind of connection structure of battery cell aluminum row and upper water cooling plate, the bottom of aluminium nitride heat-conducting block 11 Both sides are fixedly installed with connecting plate 13, one side of connecting plate 13 is fixedly installed with horizontal plate 14, and sliding hole 16 is formed in the middle of the top of horizontal plate 14.

[0043] Both sides of the inner cavity wall of the sliding hole 16 are provided with a sliding groove 17, the sliding groove 17 is fixedly installed with a sliding rod 18, and the outer surface of the sliding rod 18 is sleeved with a spring 19.

[0044] The other side of the outer surface of the sliding rod 18 is sleeved with a mounting device 15, the mounting device 15 includes a top plate 151, a top column 152 and an extrusion block 153, the extrusion block 153 is slidably installed on the bottom of the outer surface of the sliding rod 18, the top column 152 is fixedly installed on the middle of the extrusion block 153, and the top plate 151 is fixedly installed on the top of the top column 152.

[0045] The top column 152 is attached to the bottom of the heat-conducting silica gel pad 12 on the bottom of the aluminium nitride heat-conducting block 11.

[0046] The top column 152 and the top plate 151 can be made of aluminium nitride material to enhance the heat conduction effect.

[0047] The working principle of the connection structure of battery cell aluminum row and upper water cooling plate provided by the utility model is as follows:

[0048] In working, firstly, the aluminum nitride heat-conducting block 11 is installed on the top surface of the aluminum row 10, the two connecting plates 13 are sleeved on the two sides of the outer surface of the aluminum row 10, then the upper water-cooling plate 2 is covered on the top of the battery pack box body 1, after being tightly installed through the fastening member, the water-cooling plate 2 presses the aluminum nitride heat-conducting block 11 to move downwards, so that the horizontal plate 14 is tightly attached to the surface of the battery cell 9.

[0049] The extrusion force of the battery cell 9 pushes the top post 152 upwards into the inside of the sliding groove 17, the top post 152 drives the extrusion block 153 to move upwards to extrude the spring 19, the top post 152 drives the top plate 151 to move upwards, and the top plate 151 tightly attaches the aluminum row 10 to the bottom of the aluminum nitride heat-conducting block 11 and the heat-conducting silica gel pad 12, thereby improving the tightness of installation.

[0050] Compared with the related art, the connecting structure of the battery cell aluminum row and the upper water-cooling plate has the following beneficial effects:

[0051] The connecting structure of the battery cell aluminum row and the upper water-cooling plate has the following beneficial effects:

[0052] The above-mentioned is only the embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent flow conversion using the content of the utility model specification and drawings, or directly or indirectly applied in other related technical fields, are all included in the patent protection range of the utility model.

Claims

1. A connection structure between a battery cell aluminum busbar and an upper water-cooling plate, characterized in that, include: Battery pack housing; The upper water-cooling plate is fastened to the top of the battery pack housing by fasteners; A sealing gasket, wherein the sealing gasket is disposed at the bottom of the upper water-cooling plate, and the battery pack housing. A bottom water-cooling plate is installed at the bottom using fasteners; The battery cell is disposed inside the battery pack housing. An aluminum busbar is disposed on the top of the battery cell. An aluminum nitride heat-conducting block is disposed on the outer surface of the aluminum busbar. Thermally conductive silicone pads are disposed on the upper and lower sides of the outer surface of the aluminum nitride heat-conducting block.

2. The connection structure of the battery cell aluminum busbar and the upper water-cooling plate according to claim 1, characterized in that, A cooling water outlet is fixedly connected to one side of the bottom of the upper water-cooled plate, and a cooling water inlet is fixedly connected to one side of the top of the bottom water-cooled plate. Cooling pipes are provided on the surfaces of both the upper and bottom water-cooled plates.

3. The connection structure between the battery cell aluminum busbar and the upper water-cooling plate according to claim 1, characterized in that, A connecting pipe for the upper and lower water-cooled plates is fixedly connected between the upper water-cooled plate and the lower water-cooled plate.

4. The connection structure between the battery cell aluminum busbar and the upper water-cooling plate according to claim 1, characterized in that, Connecting plates are fixedly installed on both sides of the bottom of the aluminum nitride heat-conducting block, and a horizontal plate is fixedly installed on one side of the connecting plate. A sliding hole is opened in the middle of the top of the horizontal plate.

5. The connection structure between the battery cell aluminum busbar and the upper water-cooling plate according to claim 4, characterized in that, The inner wall of the sliding hole has sliding grooves on both sides in the middle. A sliding rod is fixedly installed inside the sliding groove, and a spring is sleeved on one side of the outer surface of the sliding rod.

6. The connection structure between the battery cell aluminum busbar and the upper water-cooling plate according to claim 5, characterized in that, An installation device is fitted on the other side of the outer surface of the slide rod. The installation device includes a top plate, a top column, and an extrusion block. The extrusion block is slidably installed at the bottom of the outer surface of the slide rod, the top column is fixedly installed in the middle of the extrusion block, and the top plate is fixedly installed at the top of the top column.

7. The connection structure between the battery cell aluminum busbar and the upper water-cooling plate according to claim 6, characterized in that, The top post is attached to the bottom of the thermally conductive silicone pad at the bottom of the aluminum nitride thermal block.

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