Split battery riveted top cover structure

Abstract

The utility model discloses a split type battery riveting top cover structure, including the reinforcing plate layer, aluminium plate layer and lower plastic support of the layer arrangement from top to bottom, and the buckle connection fixed between three, and the common installation of explosion -proof valve is in the middle position department of reinforcing plate layer and aluminium plate layer, and riveting fixed with lower plastic support through the pole riveting structure respectively at the both ends of reinforcing plate layer and aluminium plate layer. In the application, the reinforcing plate layer, aluminium plate layer and lower plastic support are used to carry out split type assembly design, and the tensile strength and the bending strength of the reinforcing plate layer are greater than the strength of the aluminium plate layer, the thickness of the top cover layer plate after the assembly of the reinforcing plate layer and the aluminium plate layer is between 0.6-3.5mm, which not only ensures the anti -deformation strength of the top cover piece, but also reduces the thickness of the top cover piece, increases the shell space and improves the energy density of the battery.

Description

Technical Field

[0001] This utility model relates to the field of battery top cover structure technology, specifically to a split battery riveting top cover structure. Background Technology

[0002] Currently, the mainstream packaging forms of lithium-ion batteries are cylindrical, prismatic, and pouch cells. Among prismatic cells, aluminum and steel are the main types, with prismatic aluminum-cased batteries having a higher penetration rate in China. Continuously improving the safety and energy density of lithium batteries is essential to meeting the latest demands. As an important component of lithium-ion batteries, the top cover of prismatic aluminum-cased lithium batteries faces higher requirements in terms of safety design, weight, and space utilization.

[0003] Currently, lithium-ion batteries are mainly packaged in three forms: cylindrical, prismatic, and pouch. Among them, prismatic aluminum-cased batteries are more widely used in China due to their lightweight and cost advantages. However, as the size of the battery casing increases, the internal gas pressure rises, requiring traditional stainless steel top covers to be thickened (1.5-4.0mm) to resist deformation, resulting in reduced internal space and difficulty in improving energy density. Although aluminum alloy top covers can reduce weight, their strength is insufficient, necessitating a composite design to resolve the conflict between strength and thickness.

[0004] Therefore, a split battery riveted top cover structure is needed that can ensure the deformation resistance of the top cover sheet while reducing the thickness of the top cover sheet to increase the housing space and help improve the energy density of the battery. Utility Model Content

[0005] The purpose of this invention is to provide a split battery riveting top cover structure to solve the problem of poor performance of top cover sheet structures.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A split battery riveting top cover structure includes a reinforcing plate layer, an aluminum plate layer and a lower plastic bracket arranged in layers from top to bottom, and the three are connected and fixed by snap-fit. An explosion-proof valve is installed in the middle of the reinforcing plate layer and the aluminum plate layer, and the two ends of the reinforcing plate layer and the aluminum plate layer are respectively riveted and fixed to the lower plastic bracket by the pole riveting structure.

[0008] The thickness of the layer composed of the reinforcing plate and the aluminum plate is 0.6-3.5 mm.

[0009] As a further aspect of this utility model, the material of the reinforcing plate layer includes, but is not limited to, stainless steel, nickel, titanium or copper, and its strength is greater than that of the aluminum plate layer.

[0010] As a further embodiment of this utility model: an explosion-proof valve clearance hole is provided in the middle position of the reinforcing plate layer, and the aluminum plate layer and the explosion-proof valve are integrally formed or separately assembled and connected.

[0011] As a further embodiment of this utility model: when the aluminum plate layer and the explosion-proof valve are assembled and connected separately, an explosion-proof valve lower clearance hole is provided at the middle position of the aluminum plate layer, which is vertically aligned with the upper clearance hole of the explosion-proof valve. A welding stepped groove is provided on the bottom surface of the aluminum plate layer, which is recessed along the outline of the lower clearance hole of the explosion-proof valve. The welding stepped groove is used to weld and connect with the top surface of the explosion-proof valve made of aluminum material.

[0012] As a further embodiment of this utility model: an explosion-proof valve recess is provided at the middle position of the lower plastic bracket for compatibility with the explosion-proof valve.

[0013] As a further embodiment of this utility model: the top surface of the reinforcing plate is provided with a protrusion formed by the protrusion along the clearance hole of the explosion-proof valve.

[0014] As a further embodiment of this utility model: the pole post riveting structure includes a riveting block, a plastic sleeve, a sealing ring, and a pole post. The pole post includes a square seat with an integral sealing protrusion. A T-shaped riveting head is located at the middle of the sealing protrusion. The square seat is used to abut against the bottom surface of the lower plastic bracket. The lower plastic bracket has a sealing hole one that corresponds vertically to the pole post clearance hole. A sealing ring is fitted on the sealing protrusion. The sealing ring is inserted from bottom to top and connected to the sealing hole one and the pole post lower clearance hole. The pole post lower clearance hole is located on the aluminum plate layer. The riveting head extends upward through the pole post lower clearance hole, the pole post upper clearance hole, and the sealing hole two. The pole post upper clearance hole is located on the reinforcing plate layer. The sealing hole two is located on the plastic sleeve. The riveting head is riveted to the riveting hole on the riveting block. The riveting block is located in the riveting groove on the plastic sleeve, and the plastic sleeve is located in the positioning groove on the reinforcing plate layer.

[0015] As a further embodiment of this utility model: the bottom surface of the lower plastic bracket is provided with a second protrusion that protrudes along the contour of the sealing hole, and the inner cavity of the second protrusion is adapted to and connected to the inner cavity of the square seat.

[0016] As a further embodiment of this utility model: the four edges of the reinforcing plate layer are respectively provided with a plurality of undercut slots, and the undercut slots are adapted to and snapped together with the undercut posts on the top surface of the aluminum plate layer.

[0017] As a further embodiment of this utility model: the lower plastic bracket has multiple inverted fastening posts on its four edges, and the inverted fastening posts are matched and snapped together with the inverted slots on the bottom surface of the aluminum plate.

[0018] The beneficial effects of this utility model are:

[0019] (1) In this application, a split assembly design is adopted with a reinforcing plate layer, an aluminum plate layer and a lower plastic bracket. The tensile strength and bending strength of the reinforcing plate layer are greater than those of the aluminum plate layer. The thickness of the top cover layer after the reinforcing plate layer and the aluminum plate layer are assembled is between 0.6-3.5mm. This not only ensures the deformation resistance of the top cover sheet, but also reduces the thickness of the top cover sheet, increases the shell space, and improves the energy density of the battery.

[0020] (2) The explosion-proof valve of this application can be integrally formed or assembled and connected separately on the aluminum plate layer to meet the design and use of the explosion-proof valve structure with integral installation on the top cover or the explosion-proof valve structure with non-integral installation.

[0021] (3) In this application, a split assembly design is adopted with a reinforcing plate layer, an aluminum plate layer and a lower plastic bracket to achieve rapid overall positioning of the top cover piece, and the snap-fit ​​connection is reliable, so as to enhance the interlayer bonding force and avoid the risk of delamination;

[0022] (4) This application can be modularly designed, and the reinforcement plate, aluminum plate, explosion-proof valve, pole riveting structure and lower plastic bracket are easy to assemble in a modular manner, which helps to improve production efficiency. Attached Figure Description

[0023] The present invention will be further described below with reference to the accompanying drawings.

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is a split schematic diagram of one embodiment of the present invention;

[0026] Figure 3 This is a split diagram of another embodiment of the present invention;

[0027] Figure 4 This is a bottom view of the lower surface of the aluminum plate layer of this utility model;

[0028] Figure 5 This is a bottom view of the lower surface of the lower plastic bracket of this utility model;

[0029] Figure 6 This is a bottom view schematic diagram of the pole post riveting structure of this utility model;

[0030] Figure 7 yes Figure 6 A schematic diagram showing the disassembled structure of the pole post riveting.

[0031] In the diagram: 100, Reinforcing plate layer; 101, Explosion-proof valve upper clearance hole; 102, Protrusion 1; 103, Upper clearance hole of pole post; 104, Positioning groove; 105, Undercut groove hole 1; 200, Aluminum plate layer; 201, Explosion-proof valve lower clearance hole; 202, Lower clearance hole of pole post; 203, Undercut post 1; 204, Welded stepped groove; 205, Undercut groove hole 2; 300, Lower plastic bracket; 301. Explosion-proof valve recess; 302, sealing hole one; 303, inverted post two; 304, protrusion two; 400, explosion-proof valve; 500, pole post riveting structure; 501, riveting block; 502, plastic sleeve; 503, sealing ring; 504, pole post body; 505, square seat; 506, sealing convex ring; 507, riveting head; 508, sealing hole two; 509, riveting groove; 510, riveting hole. Detailed Implementation

[0032] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0033] In the description of this utility model, it should be understood that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model; in the description of this utility model, "a plurality of" or "several" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0034] Example 1

[0035] Please see Figure 1 , Figure 2 as well as Figures 4 to 7As shown, this utility model is a split-type battery riveted top cover structure, including a reinforcing plate layer 100, an aluminum plate layer 200, and a lower plastic bracket 300 arranged in layers from top to bottom, and the three are connected and fixed by snap-fit. The material of the reinforcing plate layer 100 includes, but is not limited to, stainless steel, nickel, titanium, or copper. It should be understood that the material of the reinforcing plate layer 100 can be other metal materials, and its strength should be greater than that of the aluminum plate layer 200. In this application, the reinforcing plate layer 100, the aluminum plate layer 200, and the lower plastic bracket 300 are used for a split assembly design. The tensile strength and bending strength of the reinforcing plate layer 100 are greater than that of the aluminum plate layer 200. The thickness of the top cover layer after the reinforcing plate layer 100 and the aluminum plate layer 200 are assembled is between 0.6-3.5mm, which not only ensures the deformation resistance of the top cover sheet, but also reduces the thickness of the top cover sheet, increases the shell space, and improves the energy density of the battery.

[0036] When the explosion-proof valve 400 is installed together at the middle position of the reinforcing plate 100 and the aluminum plate 200, the aluminum plate 200 and the explosion-proof valve 400 can be integrally formed. The aluminum plate 200 and the explosion-proof valve 400 can be prefabricated and stamped directly, which can shorten the assembly time. When the explosion-proof valve 400 is assembled, an explosion-proof valve upper clearance hole 101 is opened at the middle position of the reinforcing plate 100, and an explosion-proof valve groove 301 for matching the explosion-proof valve 400 is provided at the middle position of the lower plastic bracket 300. A protrusion 102 is provided on the top surface of the reinforcing plate 100 along the explosion-proof valve upper clearance hole 101. The protrusion 102 is used to strengthen the strength of the top cover plate.

[0037] When the two ends of the reinforcing plate layer 100 and the aluminum plate layer 200 are respectively riveted and fixed to the lower plastic bracket 300 by the pole post riveting structure 500, the pole post riveting structure 500 includes a riveting block 501, a plastic sleeve 502, a sealing ring 503, and a pole body 504. The pole body 504 includes a square seat 505 with an integral sealing protrusion ring 506. The sealing protrusion ring 506 has a T-shaped riveting head 507 at the middle position. The square seat 505 is used to abut against the bottom surface of the lower plastic bracket 300. The lower plastic bracket 300 has a sealing hole 302 that corresponds vertically to the pole post clearance hole. The sealing ring 503 is fitted onto the sealing protrusion ring 506. 3. The sealing ring 503 is inserted from bottom to top into the sealing hole 302 and the lower clearance hole 202 of the pole post. The lower clearance hole 202 of the pole post is located on the aluminum plate layer 200. The riveting head 507 passes through the lower clearance hole 202 of the pole post, the upper clearance hole 103 of the pole post and the sealing hole 508. The upper clearance hole 103 of the pole post is located on the reinforcing plate layer 100 and the sealing hole 508 is located on the plastic sleeve 502. The riveting head 507 is riveted to the riveting hole 510 on the riveting block 501. The riveting block 501 is located in the riveting groove 509 on the plastic sleeve 502 and the plastic sleeve 502 is located in the positioning groove 104 on the reinforcing plate layer 100.

[0038] In this embodiment, the reinforcing plate layer 100, aluminum plate layer 200, and lower plastic bracket 300 are riveted together and fixed, replacing the traditional welding connection method for installing the pole piece 504. In this application, the pole piece 504 is directly installed from below the lower plastic bracket 300. The square seat 505 on the pole piece 504 limits and abuts against the lower plastic bracket 300. A sealing ring 503 is fitted onto the sealing convex ring 506 so that when the pole piece 504 is inserted and installed from bottom to top, the sealing ring 503 is inserted and connected in the sealing hole and the lower clearance hole 202 of the pole piece. The riveting head 507 on the pole piece 504 is connected by the riveting block 5. 01. Stamping and riveting fixation is used to position and fix the riveting block 501 in the riveting groove 509 on the plastic sleeve 502, thereby ensuring that the reinforcing plate layer 100, aluminum plate layer 200 and lower plastic bracket 300 are firmly riveted and fixed, and the pole body 504 is conveniently sealed and connected; in addition, when the pole body 504 is riveted, the bottom surface of the lower plastic bracket 300 is provided with a second protrusion 304 formed along the contour of the sealing hole. The inner cavity of the second protrusion 304 is adapted to and connected with the inner cavity of the square seat 505. The second protrusion 304 is used to position and fit the square seat 505 on the pole body 504, thereby ensuring the riveting accuracy.

[0039] When the reinforcing plate 100, aluminum plate 200, and lower plastic bracket 300 are fastened together by snap-fit, the reinforcing plate 100 has multiple undercut slots 105 at its four edges, which are matched with undercut posts 203 on the top surface of the aluminum plate 200 for snap-fit ​​connection; the lower plastic bracket 300 has multiple undercut posts 303 at its four edges, which are matched with undercut slots 205 on the bottom surface of the aluminum plate 200 for snap-fit ​​connection. The device features snap-fit ​​connections. This application uses a stamping method to snap-fit ​​the reinforcing plate 100, aluminum plate 200, and lower plastic bracket 300 together. The first snap-fit ​​hole 105 is matched with the first snap-fit ​​post 203 for snap-fit ​​connection, and the second snap-fit ​​hole 205 is matched with the second snap-fit ​​post 303 for snap-fit ​​connection. This facilitates the quick positioning of the top cover piece as a whole, and the snap-fit ​​connection is reliable. Finally, ultrasonic welding can be used to seal the contact surface between the aluminum plate 200 and the lower plastic bracket 300.

[0040] Example 2

[0041] Please see Figure 1 as well as Figures 3 to 7As shown, this utility model is a split-type battery riveted top cover structure, including a reinforcing plate layer 100, an aluminum plate layer 200, and a lower plastic bracket 300 arranged in layers from top to bottom, and the three are connected and fixed by snap-fit. The material of the reinforcing plate layer 100 includes, but is not limited to, stainless steel, nickel, titanium, or copper. It should be understood that the material of the reinforcing plate layer 100 can be other metal materials, and its strength should be greater than that of the aluminum plate layer 200. In this application, the reinforcing plate layer 100, the aluminum plate layer 200, and the lower plastic bracket 300 are used for a split assembly design. The tensile strength and bending strength of the reinforcing plate layer 100 are greater than three times the strength of the aluminum plate layer 200. The thickness of the top cover layer after the reinforcing plate layer 100 and the aluminum plate layer 200 are assembled is between 0.8-1.5mm, which not only ensures the deformation resistance of the top cover sheet, but also reduces the thickness of the top cover sheet, increases the shell space, and improves the energy density of the battery.

[0042] When the explosion-proof valve 400 is installed together at the middle position of the reinforcing plate 100 and the aluminum plate 200, the aluminum plate 200 and the explosion-proof valve 400 can be assembled separately to facilitate the design of a non-integrated explosion-proof valve 400 installation structure. When assembling the explosion-proof valve 400, a lower clearance hole 201 for the explosion-proof valve is provided at the middle position of the aluminum plate 200, which is vertically aligned with the upper clearance hole 101 of the explosion-proof valve. A welding stepped groove 204 is provided on the bottom surface of the aluminum plate 200, which is recessed along the contour of the lower clearance hole 201 of the explosion-proof valve. The welding stepped groove 204 is used for welding to the top surface of the aluminum explosion-proof valve 400. The connection is formed by joining the parts. An explosion-proof valve clearance hole 101 is provided in the middle of the reinforcing plate 100. The explosion-proof valve 400 is made of aluminum material so that it can be welded and fixed in the welding stepped groove 204 on the aluminum plate 200 with the same material, so that the aluminum explosion-proof valve 400 is sealed and welded and fixed firmly. In addition, an explosion-proof valve recess 301 is provided in the middle of the lower plastic bracket 300 for matching the explosion-proof valve 400. A protrusion 102 is provided on the top surface of the reinforcing plate 100 along the explosion-proof valve clearance hole 101. The protrusion 102 is used to strengthen the strength of the top cover plate.

[0043] When the two ends of the reinforcing plate layer 100 and the aluminum plate layer 200 are respectively riveted and fixed to the lower plastic bracket 300 by the pole post riveting structure 500, the pole post riveting structure 500 includes a riveting block 501, a plastic sleeve 502, a sealing ring 503, and a pole body 504. The pole body 504 includes a square seat 505 with an integral sealing protrusion ring 506. The sealing protrusion ring 506 has a T-shaped riveting head 507 at the middle position. The square seat 505 is used to abut against the bottom surface of the lower plastic bracket 300. The lower plastic bracket 300 has a sealing hole 302 that corresponds vertically to the pole post clearance hole. The sealing ring 503 is fitted onto the sealing protrusion ring 506. 3. The sealing ring 503 is inserted from bottom to top into the sealing hole 302 and the lower clearance hole 202 of the pole post. The lower clearance hole 202 of the pole post is located on the aluminum plate layer 200. The riveting head 507 passes through the lower clearance hole 202 of the pole post, the upper clearance hole 103 of the pole post and the sealing hole 508. The upper clearance hole 103 of the pole post is located on the reinforcing plate layer 100 and the sealing hole 508 is located on the plastic sleeve 502. The riveting head 507 is riveted to the riveting hole 510 on the riveting block 501. The riveting block 501 is located in the riveting groove 509 on the plastic sleeve 502 and the plastic sleeve 502 is located in the positioning groove 104 on the reinforcing plate layer 100.

[0044] In this embodiment, the reinforcing plate layer 100, aluminum plate layer 200, and lower plastic bracket 300 are riveted together and fixed, replacing the traditional welding connection method for installing the pole piece 504. In this application, the pole piece 504 is directly installed from below the lower plastic bracket 300. The square seat 505 on the pole piece 504 limits and abuts against the lower plastic bracket 300. A sealing ring 503 is fitted onto the sealing convex ring 506 so that when the pole piece 504 is inserted and installed from bottom to top, the sealing ring 503 is inserted and connected in the sealing hole and the lower clearance hole 202 of the pole piece. The riveting head 507 on the pole piece 504 is connected by the riveting block 5. 01. Stamping and riveting fixation is used to position and fix the riveting block 501 in the riveting groove 509 on the plastic sleeve 502, thereby ensuring that the reinforcing plate layer 100, aluminum plate layer 200 and lower plastic bracket 300 are firmly riveted and fixed, and the pole body 504 is conveniently sealed and connected; in addition, when the pole body 504 is riveted, the bottom surface of the lower plastic bracket 300 is provided with a second protrusion 304 formed along the contour of the sealing hole. The inner cavity of the second protrusion 304 is adapted to and connected with the inner cavity of the square seat 505. The second protrusion 304 is used to position and fit the square seat 505 on the pole body 504, thereby ensuring the riveting accuracy.

[0045] When the reinforcing plate 100, aluminum plate 200, and lower plastic bracket 300 are fastened together by snap-fit, the reinforcing plate 100 has multiple undercut slots 105 at its four edges, which are matched with undercut posts 203 on the top surface of the aluminum plate 200 for snap-fit ​​connection; the lower plastic bracket 300 has multiple undercut posts 303 at its four edges, which are matched with undercut slots 205 on the bottom surface of the aluminum plate 200 for snap-fit ​​connection. The device features snap-fit ​​connections. This application uses a stamping method to snap-fit ​​the reinforcing plate 100, aluminum plate 200, and lower plastic bracket 300 together. The first snap-fit ​​hole 105 is matched with the first snap-fit ​​post 203 for snap-fit ​​connection, and the second snap-fit ​​hole 205 is matched with the second snap-fit ​​post 303 for snap-fit ​​connection. This facilitates the quick positioning of the top cover piece as a whole, and the snap-fit ​​connection is reliable. Finally, ultrasonic welding can be used to seal the contact surface between the aluminum plate 200 and the lower plastic bracket 300.

[0046] It should be understood that in Embodiments 1 and 2, the reinforcing plate layer can be placed above or below the aluminum plate layer, and can be selectively applied according to actual needs.

[0047] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the claims of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A split-type battery riveted top cover structure, characterized in that, It includes a reinforcing plate layer (100), an aluminum plate layer (200), and a lower plastic bracket (300) arranged in layers from top to bottom, and the three are connected and fixed by snap-fit. An explosion-proof valve (400) is installed in the middle of the reinforcing plate layer (100) and the aluminum plate layer (200), and the two ends of the reinforcing plate layer (100) and the aluminum plate layer (200) are respectively riveted and fixed to the lower plastic bracket (300) by a pole post riveting structure (500). The thickness of the layer composed of the reinforcing plate layer (100) and the aluminum plate layer (200) is 0.6-3.5 mm. The pole post riveting structure (500) includes a riveting block (501), a plastic sleeve (502), a sealing ring (503), and a pole post body (504). The pole post body (504) includes a square seat (505) with an integral sealing protrusion ring (506). The sealing protrusion ring (506) has a T-shaped riveting head (507) at its middle position. The square seat (505) is used to abut against the bottom surface of the lower plastic bracket (300). The lower plastic bracket (300) has a sealing hole (302) that corresponds vertically to the pole post clearance hole. The sealing ring (503) is fitted onto the sealing protrusion ring (506). The sealing ring (503) is inserted from bottom to top and connected to the sealing hole (302) and the sealing protrusion ring (506). Inside the lower clearance hole (202) of the pole post, the lower clearance hole (202) of the pole post is located on the aluminum plate layer (200). The riveting head (507) passes through the lower clearance hole (202), the upper clearance hole (103) of the pole post and the second sealing hole (508) upward. The upper clearance hole (103) of the pole post is located on the reinforcing plate layer (100). The second sealing hole (508) is located on the plastic sleeve (502). The riveting head (507) is riveted to the riveting hole (510) on the riveting block (501). The riveting block (501) is set in the riveting groove (509) on the plastic sleeve (502), and the plastic sleeve (502) is set in the positioning groove (104) on the reinforcing plate layer (100). The bottom surface of the lower plastic bracket (300) is provided with a second protrusion (304) that protrudes along the contour of the sealing hole, and the inner cavity of the second protrusion (304) is adapted to and connected to the inner cavity of the square seat (505); The reinforcing plate layer (100) has multiple undercut slots (105) at its four edges, and the undercut slots (105) are adapted to and snapped together with the undercut posts (203) on the top surface of the aluminum plate layer (200). The lower plastic bracket (300) has multiple inverted post 2 (303) at its four edges. The inverted post 2 (303) is adapted to the inverted groove hole 2 (205) on the bottom surface of the aluminum plate layer (200) and snaps together.

2. The split-type battery riveting top cover structure according to claim 1, characterized in that, The strength of the reinforcing plate layer (100) must be greater than that of the aluminum plate layer (200).

3. The split-type battery riveting top cover structure according to claim 1, characterized in that, An explosion-proof valve clearance hole (101) is provided in the middle of the reinforcing plate layer (100). The aluminum plate layer (200) and the explosion-proof valve (400) are integrally formed or separately assembled and connected.

4. The split-type battery riveting top cover structure according to claim 3, characterized in that, When the aluminum plate layer (200) and the explosion-proof valve (400) are assembled and connected separately, an explosion-proof valve lower clearance hole (201) is provided at the middle position of the aluminum plate layer (200) and is vertically aligned with the upper clearance hole (101) of the explosion-proof valve. A welding stepped groove (204) is provided on the bottom surface of the aluminum plate layer (200) and is recessed along the outline of the explosion-proof valve lower clearance hole (201). The welding stepped groove (204) is used to weld and connect with the top surface of the aluminum explosion-proof valve (400).

5. The split-type battery riveting top cover structure according to claim 4, characterized in that, The lower plastic bracket (300) is provided with an explosion-proof valve recess (301) at the middle position for matching with the explosion-proof valve (400).

6. The split-type battery riveting top cover structure according to claim 4, characterized in that, The top surface of the reinforcing plate (100) is provided with a protrusion (102) formed by protruding along the clearance hole (101) of the explosion-proof valve.

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