An explosion-proof battery pack upper cover sealing assembly

Abstract

The present invention relates to the technical field of battery packs, and specifically to an explosion-proof battery pack upper cover sealing assembly, comprising a sealing cover, a convection port is provided on the surface of the sealing cover, an explosion-proof valve is installed inside the convection port, a plug plate is fixed to the bottom surface of the sealing cover, an airbag ring is embedded on the outer ring surface of the plug plate, a top support arm is rotatably connected to the outer ring surface of the plug plate, a rubber clamp is provided between the top support arm and the plug plate, a mounting groove is provided on the top surface of the sealing cover, a through hole is provided on the bottom surface of the mounting groove, a screw is inserted into the inside of the through hole; the beneficial effect is: the explosion-proof battery pack upper cover sealing assembly proposed by the present invention has a positioning block movably inserted into the inside of the mounting groove, after the screw passes through the through hole and is fixed to the battery pack shell, the positioning block extends into the slot, effectively preventing the screw from rotating in the through hole and preventing the screw from moving up in the mounting groove, thereby preventing the screw from loosening and achieving a firm installation and fixation of the sealing cover.

Description

Technical Field

[0001] The present invention relates to the field of battery packs, and in particular to an explosion-proof battery pack upper cover sealing assembly. Background Art

[0002] With the continuous advancement of technology, various electric vehicles such as hybrid vehicles, pure electric vehicles, and extended-range electric vehicles are emerging in an endless stream. In electric vehicles, power battery packs are key components.

[0003] In the prior art, the battery pack is a high-voltage system, and the sealing of the battery pack must be guaranteed, otherwise there will be serious safety hazards in the battery pack. When the battery pack is lightweight, the port sealing cover on the upper shell will use plastic material, which cannot be welded and sealed, so bolts are used to fix it during assembly.

[0004] However, if the bolts fixing the sealing cover become loose, a gap will exist between the sealing cover and the battery pack shell, that is, the sealing effect of the sealing cover is poor, resulting in certain safety hazards when the battery pack is in use. Summary of the invention

[0005] The object of the present invention is to provide an explosion-proof battery pack upper cover sealing assembly to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an explosion-proof battery pack upper cover sealing assembly, comprising a sealing cover, a convection port is provided on the surface of the sealing cover, an explosion-proof valve is installed inside the convection port, a plug plate is fixed to the bottom surface of the sealing cover, an airbag ring is embedded in the outer ring surface of the plug plate, a top support arm is rotatably connected to the outer ring surface of the plug plate, a rubber clamp is provided between the top support arm and the plug plate, a mounting groove is provided on the top surface of the sealing cover, a through hole is provided on the bottom surface of the mounting groove, a screw is inserted in the inside of the through hole, an elastic support frame is embedded in the surface of the mounting groove, the top plate of the screw is pressed on the top of the elastic support frame, a rubber clamp strip 2 is embedded in the inner wall of the through hole, a card slot is provided on the top plate of the screw, a positioning block is slidably connected to the inside of the card slot, and one end of the positioning block is movably inserted in the side wall of the mounting groove.

[0007] Preferably, the convection port is a "cross" shaped slot, and through openings are provided on the top surface and the bottom surface of the convection port. An explosion-proof valve is fixed on the surface of a group of through openings below the convection port, a metal mesh piece 1 is fixed on the surface of another group of through openings, and a metal mesh piece 2 is fixed at the slot of the convection port, an embedding groove 1 is provided on the top surface of the sealing cover, and an explosion-proof metal mesh is fixed on the surface of the embedding groove 1.

[0008] Preferably, a rubber pad is fixed to the bottom surface of the sealing cover, the plug plate is an annular plate structure, the bottom end of the outer ring surface of the plug plate is integrally formed with an arc-shaped introduction slope, the outer ring surface of the plug plate is provided with a reserved groove, the reserved groove is an annular groove, an airbag ring is fixed to the surface of the reserved groove, and the outer ring size of the airbag ring is larger than the outer ring mouth size of the reserved groove.

[0009] Preferably, the outer ring surface of the plug plate is provided with a notch, and there are two groups of notches, which are symmetrically distributed about the plug plate, a through rod is fixed between two parallel side walls of the notch, the through rod passes through a through hole one, and the through hole one is provided on the surface of the top support arm, the top support arm is an "L"-shaped plate structure, a plurality of embedding grooves two are provided at one end of the top support arm, a rubber clamp strip one is fixed on the surface of the embedding groove two, the thickness of the rubber clamp strip one is greater than the depth of the embedding groove two, a baffle plate is fixed between the two parallel side walls of the notch, and the top support arm is elastically supported on one side of the baffle plate by the rubber clamp plate.

[0010] Preferably, a storage groove is provided on the surface of the notch, a rubber splint is fixed on the surface of the storage groove, the rubber splint is a right-angled trapezoidal plate-like structure, the inclined surface of the rubber splint is fixed on the surface of the top support arm, a round opening is provided on the surface of the rubber splint, and arc surfaces are provided on the top surface and the bottom surface of the rubber splint, an elastic support piece is fixed in the arc surface, and the elastic support piece is a "U"-shaped plate-like structure.

[0011] Preferably, a guide groove is provided on the bottom surface of the mounting groove, the guide groove and the through hole are connected, the height of the guide groove is smaller than the height of the through hole, a rubber clamp strip 2 is fixed on the surface of the guide groove, the width of the rubber clamp strip 2 is larger than the depth of the guide groove, the rubber clamp strip 2 is clamped between the screw rod and the through hole, and a plurality of guide grooves are provided, and the plurality of guide grooves are arranged and distributed along the arc surface of the through hole.

[0012] Preferably, a telescopic groove is provided on the bottom surface of the mounting groove, the telescopic groove is an annular groove, the elastic support frame is a trapezoidal ring plate structure, the bottom surface of the elastic support frame is fixed to the bottom surface of the telescopic groove, the height of the elastic support frame is greater than the telescopic groove, the top notch size of the elastic support frame is equal to the opening size of the perforation, an elastic transition ring is integrally formed on the surface of the elastic support frame, the elastic transition ring is a ring plate structure with a circular arc cross-section, a rubber gasket is fixed to the bottom surface of the mounting groove, and the rubber gasket is located below the top plate of the elastic support frame.

[0013] Preferably, a slot is provided on the surface of the mounting groove, and two groups of slots are provided, and the two groups of slots are symmetrically distributed about the mounting groove, the positioning block is movably inserted in the slot, and a slide rail groove is provided on the top surface of the sealing cover, the slide rail groove and the through hole are connected, the long side length of the slide rail groove is smaller than the long side length of the slot, and a paddle is slidably connected inside the slide rail groove, and the paddle is fixed to the top surface of one end of the positioning block inserted into the slot.

[0014] Preferably, a traction plate is fixed to the top surface of the paddle, a finger groove is provided on the surface of the traction plate, and the bottom width of the traction plate is equal to the length of the long side of the slide rail groove.

[0015] Preferably, the surface of the paddle is provided with a second through-hole, a guide rod is movably inserted inside the second through-hole, two ends of the guide rod are respectively fixed on two parallel side walls of the slide rail groove, a spring is sleeved on the rod body of the guide rod, and the spring is fixed between the paddle and the slide rail groove.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The explosion-proof battery pack upper cover sealing assembly proposed in the present invention has a positioning block movably inserted inside the installation groove. After the screw is passed through the through hole and fixed in the battery pack shell, the positioning block extends into the slot, which effectively prevents the screw from rotating in the through hole and preventing the screw from moving up in the installation groove, thereby preventing the screw from loosening, thereby achieving a firm installation and fixation of the sealing cover. After the sealing cover is installed in the battery pack shell, the plug plate installed on the surface of the sealing cover is inserted into the battery pack shell. At this time, the airbag ring is clamped between the plug plate and the battery pack shell, thereby improving the sealing of the battery pack after the sealing cover is fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2 It is a schematic diagram of the bottom structure of the present invention;

[0020] Figure 3 It is a schematic diagram of a half-section structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the structure after the local corner of the present invention is cut open;

[0022] Figure 5 This is a schematic diagram of the connection structure between the positioning plug block and the traction plate of the present invention;

[0023] Figure 6 It is a schematic diagram of the connection structure of the elastic support frame and the elastic transition ring of the present invention;

[0024] Figure 7 A half-section schematic diagram of the connection structure of the elastic support frame and the elastic transition ring of the present invention;

[0025] Figure 8 It is a schematic diagram of the top support arm structure of the present invention;

[0026] Fig. 9 It is a schematic diagram of the screw structure of the present invention;

[0027] Fig.10 It is a schematic diagram of the installation slot structure of the present invention.

[0028] In the figure: sealing cover 1, convection port 2, through port 3, explosion-proof valve 4, metal mesh 1 5, metal mesh 2 6, embedded groove 1 7, explosion-proof metal mesh 8, rubber pad 9, plug plate 10, reserved groove 11, airbag ring 12, missing groove 13, through rod 14, perforation 1 15, top support arm 16, baffle 17, storage groove 18, rubber clamp 19, elastic support piece 20, embedded groove 2 21, rubber clamp strip 1 22, installation groove 23, perforation 24, introduction groove 25, rubber clamp strip 2 26, screw 27, telescopic groove 28, elastic support frame 29, elastic transition ring 30, rubber gasket 31, card slot 32, positioning plug 33, slot 34, slide rail slot 35, paddle 36, traction plate 37, perforation 2 38, guide rod 39, spring 40. DETAILED DESCRIPTION

[0029] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] See also Figure 1-Figure 3The present invention provides a technical solution: an explosion-proof battery pack upper cover sealing assembly, comprising a sealing cover 1, a convection port 2 is provided on the surface of the sealing cover 1, an explosion-proof valve 4 is installed inside the convection port 2, a plug plate 10 is fixed to the bottom surface of the sealing cover 1, an airbag ring 12 is embedded in the outer ring surface of the plug plate 10, a top support arm 16 is rotatably connected to the outer ring surface of the plug plate 10, a rubber clamping plate 19 is provided between the top support arm 16 and the plug plate 10, a mounting groove 23 is provided on the top surface of the sealing cover 1, a through hole 24 is provided on the bottom surface of the mounting groove 23, a screw 27 is inserted in the through hole 24, an elastic support frame 29 is embedded on the surface of the mounting groove 23, a top plate of the screw 27 is pressed on the top of the elastic support frame 29, a rubber clamping strip 26 is embedded in the inner wall of the through hole 24, and a top plate of the screw 27 is A card slot 32 is provided, and a positioning block 33 is slidably connected inside the card slot 32, and one end of the positioning block 33 is movably inserted into the side wall of the mounting slot 23; the positioning block 33 is movably inserted into the mounting slot 23, and after the screw 27 passes through the through hole 24 and is fixed to the battery pack shell, the positioning block 33 extends into the card slot 32, which effectively prevents the screw 27 from rotating in the through hole 24 and preventing the screw 27 from moving up in the mounting slot 23, thereby preventing the screw 27 from loosening, thereby achieving a firm installation and fixation of the sealing cover 1, and after the sealing cover 1 is installed in the battery pack shell, the plug plate 10 installed on the surface of the sealing cover 1 is inserted into the battery pack shell, and at this time, the airbag ring 12 is clamped between the plug plate 10 and the battery pack shell, thereby improving the sealing of the battery pack after the sealing cover 1 is fixed.

[0031] In order to improve the sealing performance of the sealing cover 1 installed on the battery pack and realize the hidden installation of the explosion-proof valve 4 in the sealing cover 1, the convection port 2 is a "cross" shaped notch, and the top surface and the bottom surface of the convection port 2 are both provided with through ports 3, and the surface of a group of through ports 3 below the convection port 2 is fixed with an explosion-proof valve 4, and the surface of the other group of through ports 3 is fixed with a metal mesh 5, and a metal mesh 2 6 is fixed at the notch of the convection port 2, an embedding groove 7 is provided on the top surface of the sealing cover 1, and an explosion-proof metal mesh 8 is fixed on the surface of the embedding groove 7, a rubber pad 9 is fixed on the bottom surface of the sealing cover 1, and a plug plate 10 is an annular plate structure, and an arc-shaped introduction slope is integrally formed on the bottom end of the outer ring surface of the plug plate 10, and a reserved groove 11 is provided on the outer ring surface of the plug plate 10, and the reserved groove 11 is an annular groove, and an airbag ring 12 is fixed on the surface of the reserved groove 11, and the outer ring size of the airbag ring 12 is larger than the outer ring port size of the reserved groove 11.

[0032] The explosion-proof valve 4 serves as a pressure relief mechanism for the battery pack. The explosion-proof valve 4 is located in the convection port 2, thereby preventing the explosion-proof valve 4 from being damaged by collision during the transfer of the battery pack, and the gas ejected from the explosion-proof valve 4 is released through the four notches of the convection port 2 and the through port 3, and metal mesh sheets 1 5 and 2 6 are respectively installed in the notches of the convection port 2 and the through port 3 for protection, preventing debris from entering the convection port 2 and affecting the gas dispersion of the convection port 2; the reason why an explosion-proof metal mesh 8 is installed on the top surface of the sealing cover 1 is to prevent the sealing cover 1 from splashing around when it is damaged, that is, the explosion-proof metal mesh 8 plays a protective role on the sealing cover 1, and an embedding groove 1 7 is provided on the top surface of the sealing cover 1 for installing the explosion-proof metal mesh 8, thereby achieving the limitation of the explosion-proof metal mesh 8.

[0033] See attached Figure 8 In order to prevent the plug plate 10 from being randomly pulled out after being inserted into the battery pack shell, a notch 13 is provided on the outer ring surface of the plug plate 10. The notch 13 is provided in two groups. The two groups of notches 13 are symmetrically distributed about the plug plate 10. A through rod 14 is fixed between two parallel side walls of the notch 13. The through rod 14 passes through a through hole 15. The through hole 15 is provided on the surface of a top support arm 16. The top support arm 16 is an "L"-shaped plate structure. A plurality of embedded grooves 21 are provided at one end of the top support arm 16. A rubber clamp strip 22 is fixed on the surface of the embedded groove 21. The thickness of the rubber clamp strip 22 is greater than that of the embedded groove 21. As it goes deeper, a baffle 17 is fixed between two parallel side walls of the notch 13, and the top support arm 16 is elastically supported on one side of the baffle 17 by a rubber splint 19. A storage groove 18 is provided on the surface of the notch 13, and a rubber splint 19 is fixed on the surface of the storage groove 18. The rubber splint 19 is a right-angled trapezoidal plate-like structure, and the inclined surface of the rubber splint 19 is fixed on the surface of the top support arm 16. A round mouth is provided on the surface of the rubber splint 19, and arc surfaces are provided on the top surface and the bottom surface of the rubber splint 19. An elastic support sheet 20 is fixed in the arc surface, and the elastic support sheet 20 is a "U"-shaped plate-like structure.

[0034] Buckle the sealing cover 1 on the battery pack shell, and push the plug plate 10 into the battery pack shell. During the pushing process of the plug plate 10, the inner wall of the battery pack shell squeezes the top support arm 16 along the inclined surface of the top support arm 16 to rotate around the through rod 14. Since the baffle 17 blocks the top support arm 16, the top support arm 16 can only move to the side of the missing groove 13. When the top support arm 16 moves, the rubber clamp 19 and the elastic support sheet 20 are squeezed to elastically deform. Until the plug plate 10 is completely pushed into the battery pack shell, the rubber clamp strip 22 on the surface of the top support arm 16 contacts the inner wall of the battery pack shell to play an anti-slip role, preventing the plug plate 10 from bumping from the battery pack shell when there is no external force. At this time, the reserved groove 11 is clamped between the plug plate 10 and the battery pack shell to prevent air leakage from the battery pack shell.

[0035] See attached Figures 4 to 7 as well as Fig. 9 and Fig.10 In order to prevent the screw 27 fixing the sealing cover 1 and the battery pack shell from loosening, an introduction groove 25 is provided on the bottom surface of the mounting groove 23. The introduction groove 25 and the through hole 24 are connected. The height of the introduction groove 25 is less than the height of the through hole 24. A rubber clamp 26 is fixed on the surface of the introduction groove 25. The width of the rubber clamp 26 is greater than the depth of the introduction groove 25. The rubber clamp 26 is clamped between the screw 27 and the through hole 24. A plurality of introduction grooves 25 are provided. The plurality of introduction grooves 25 are arranged along the arc surface of the through hole 24. The bottom surface of the mounting groove 23 is provided with a telescopic groove 28, and the telescopic groove 28 is an annular groove. The elastic support frame 29 is a stage-shaped ring plate structure. The bottom surface of the elastic support frame 29 is fixed to the bottom surface of the telescopic groove 28. The height of the elastic support frame 29 is greater than the telescopic groove 28. The top notch size of the elastic support frame 29 is equal to the opening size of the perforation 24. The surface of the elastic support frame 29 is integrally formed with an elastic transition ring 30. The elastic transition ring 30 is a ring plate structure with a circular arc surface in cross section. The bottom surface of the mounting groove 23 is fixed with a rubber gasket 31. The rubber pad ring 31 is located below the top plate of the elastic support frame 29; a slot 34 is provided on the surface of the mounting groove 23, and the slot 34 is provided with two groups, and the two groups of slots 34 are symmetrically distributed about the mounting groove 23, and the positioning plug 33 is movably inserted in the slot 34, and a slide rail groove 35 is provided on the top surface of the sealing cover 1, and the slide rail groove 35 and the through hole 24 are connected, and the long side length of the slide rail groove 35 is less than the long side length of the slot 34, and the slide rail groove 35 is slidably connected with a paddle 36 inside, and the paddle 36 is fixed to the positioning plug 33 and inserted into the slot 3 4; a traction plate 37 is fixed on the top surface of the paddle 36, a finger groove is provided on the surface of the traction plate 37, and the bottom width of the traction plate 37 is equal to the long side length of the slide rail groove 35; a second through hole 38 is provided on the surface of the paddle 36, and a guide rod 39 is movably inserted in the second through hole 38, and the two ends of the guide rod 39 are respectively fixed on two parallel side walls of the slide rail groove 35, and a spring 40 is sleeved on the rod body of the guide rod 39, and the spring 40 is fixed between the paddle 36 and the slide rail groove 35.

[0036] When the sealing cover 1 is fixed to the shell of the battery pack by the screw 27, two fingers are respectively inserted into the finger grooves of the two traction plates 37 on both sides of the installation groove 23, and the two fingers are stretched outward, and the traction plate 37 pulls the paddle 36 to slide along the guide rod 39, and the paddle 36 squeezes the spring 40 to deform, and the paddle 36 pulls the positioning plug 33 to retract into the slot 34. At this time, after the screw 27 is inserted into the through hole 24, the screw 27 is screwed on the top surface of the shell of the battery pack. After the screw 27 is locked, the rubber clamp 26 is clamped between the screw 27 and the through hole 24 to elastically deform, and the rebound force of the rubber clamp 26 rebounds to clamp the screw 27, that is, the rubber clamp 26 fills the gap between the screw 27 and the through hole 24, reinforcing the screw 27 after installation. Firmness, the top plate of the screw 27 clamps the elastic support frame 29 downward to elastically deform, and the telescopic groove 28 provides a telescopic space for the deformation of the elastic support frame 29. After the elastic support frame 29 is deformed, the top plate of the elastic support frame 29 clamps the rubber gasket 31 downward, and the resilience of the rubber gasket 31 and the guide rod 39 supports the screw 27, so that the threaded connection of the screw 27 is more tightly engaged. At this time, two fingers are removed from the surface of the two traction plates 37, and the spring 40 rebounds and pushes the paddle 36 back along the guide rod 39. The paddle 36 drives the positioning block 33 to slide into the slot 32. At this time, the slot 32 prevents the screw 27 from rotating in the mounting slot 23, and the slot 32 prevents the screw 27 from moving up in the mounting slot 23, so that the screw 27 will not be loose.

[0037] In actual use, the sealing cover 1 is buckled on the shell of the battery pack, and the plug plate 10 is pushed into the shell of the battery pack. During the pushing process of the plug plate 10, the inner wall of the shell of the battery pack squeezes the top support arm 16 along the inclined surface of the top support arm 16 to rotate around the through rod 14. Since the baffle 17 blocks the top support arm 16, the top support arm 16 can only move to the side of the notch 13. When the top support arm 16 moves, the rubber clamping plate 19 and the elastic support sheet 20 are squeezed to elastically deform. Until the plug plate 10 is completely pushed into the shell of the battery pack, the rubber clamping strip 22 on the surface of the top support arm 16 contacts the inner wall of the shell of the battery pack, which plays an anti-slip role and avoids The plug-free plate 10 is shaken from the battery pack shell when there is no external force pulling, and at this time the reserved groove 11 is clamped between the plug plate 10 and the battery pack shell to prevent the battery pack shell from leaking, and the sealing cover 1 presses the rubber pad 9 on the top surface of the battery plate shell. When the sealing cover 1 needs to be fixed to the battery pack shell by the screw 27, two fingers are respectively inserted into the finger grooves of the two traction plates 37 on both sides of the installation groove 23, and the two fingers are extended outward, and the traction plate 37 pulls the paddle 36 to slide along the guide rod 39, and the paddle 36 squeezes the spring 40 to deform, and the paddle 36 pulls the positioning plug 33 to retract into the slot 34. In this case, after the screw 27 is inserted into the through hole 24, the screw 27 is screwed on the top surface of the battery pack shell. After the screw 27 is locked, the top plate of the screw 27 clamps the elastic support frame 29 downward to cause elastic deformation. The telescopic groove 28 provides a telescopic space for the deformation of the elastic support frame 29. After the elastic support frame 29 is deformed, the top plate of the elastic support frame 29 clamps the rubber gasket 31 downward. The resilience of the rubber gasket 31 and the guide rod 39 supports the screw 27, so that the threaded connection of the screw 27 is more tightly engaged. At this time, two fingers are removed from the surfaces of the two traction plates 37, and the spring 40 rebounds and pushes the paddle 36 along the guide rod. Move back to the rod 39, the paddle 36 drives the positioning plug 33 to slide into the slot 32. At this time, the slot 32 prevents the screw 27 from rotating in the mounting slot 23, and the slot 32 prevents the screw 27 from moving up in the mounting slot 23, so that the screw 27 will not be loose, ensuring that the sealing cover 1 is firmly installed, thereby ensuring the sealing of the battery pack shell; the explosion-proof valve 4 serves as a pressure relief mechanism for the battery pack, and the explosion-proof valve 4 is in the convection port 2, thereby preventing the explosion-proof valve 4 from being damaged by bumps during the transfer of the battery pack, and the gas ejected from the explosion-proof valve 4 is released through the four notches of the convection port 2 and the through port 3.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof battery pack upper cover sealing assembly, comprising a sealing cover (1), Features: The surface of the sealing cover (1) is provided with a convection port (2), an explosion-proof valve (4) is installed inside the convection port (2), a plug plate (10) is fixed to the bottom surface of the sealing cover (1), an airbag ring (12) is embedded in the outer ring surface of the plug plate (10), a top support arm (16) is rotatably connected to the outer ring surface of the plug plate (10), a rubber clamping plate (19) is provided between the top support arm (16) and the plug plate (10), a mounting groove (23) is provided on the top surface of the sealing cover (1), and a gasket (12) is provided on the bottom surface of the mounting groove (23). A through hole (24) is formed, a screw rod (27) is inserted into the through hole (24), an elastic support frame (29) is embedded in the surface of the mounting groove (23), a top plate of the screw rod (27) is pressed on the top of the elastic support frame (29), a rubber clamp strip (26) is embedded in the inner wall of the through hole (24), a slot (32) is formed on the top plate of the screw rod (27), a positioning block (33) is slidably connected to the inside of the slot (32), and one end of the positioning block (33) is movably inserted into the side wall of the mounting groove (23); A rubber pad (9) is fixed to the bottom surface of the sealing cover (1); the plug plate (10) is an annular plate structure; the bottom end of the outer ring surface of the plug plate (10) is integrally formed with an arc-shaped introduction slope; the outer ring surface of the plug plate (10) is provided with a reserved groove (11); the reserved groove (11) is an annular groove; an airbag ring (12) is fixed to the surface of the reserved groove (11); the outer ring size of the airbag ring (12) is larger than the outer ring opening size of the reserved groove (11); the plug plate ( The outer ring surface of the plug plate (10) is provided with a notch (13), the notch (13) is provided with two groups, the two groups of notch (13) are symmetrically distributed about the plug plate (10), a through rod (14) is fixed between two parallel side walls of the notch (13), the through rod (14) passes through a through hole (15), the through hole (15) is provided on the surface of a top support arm (16), the top support arm (16) is an "L"-shaped plate structure, and one end of the top support arm (16) is provided with A plurality of second embedding grooves (21), a rubber clamp strip (22) is fixed on the surface of the second embedding groove (21), the thickness of the rubber clamp strip (22) is greater than the depth of the second embedding groove (21), a baffle (17) is fixed between two parallel side walls of the missing groove (13), and the top support arm (16) is elastically supported on one side of the baffle (17) by the rubber clamp strip (19); a receiving groove (18) is opened on the surface of the missing groove (13), and the receiving groove ( A rubber splint (19) is fixed on the surface of the top support arm (18), the rubber splint (19) is in a right-angle trapezoidal plate-like structure, the inclined surface of the rubber splint (19) is fixed on the surface of the top support arm (16), a round opening is opened on the surface of the rubber splint (19), and the top surface of the rubber splint (19) and the bottom surface of the rubber splint (19) are both opened with arc surfaces, an elastic support sheet (20) is fixed in the arc surface, and the elastic support sheet (20) is in a "U"-shaped plate-like structure.

2. An explosion-proof battery pack upper cover sealing assembly according to claim 1, Features: The convection port (2) is in the form of a cross-shaped notch, and both the top surface and the bottom surface of the convection port (2) are provided with through openings (3), an explosion-proof valve (4) is fixed on the surface of a group of through openings (3) located below the convection port (2), a metal mesh sheet (5) is fixed on the surface of another group of through openings (3), and a metal mesh sheet (6) is fixed at the notch of the convection port (2), and an embedding groove (7) is provided on the top surface of the sealing cover (1), and an explosion-proof metal mesh (8) is fixed on the surface of the embedding groove (7).

3. The explosion-proof battery pack upper cover sealing assembly according to claim 1, Features: The bottom surface of the installation groove (23) is provided with an introduction groove (25), the introduction groove (25) and the through hole (24) are connected, the height of the introduction groove (25) is less than the height of the through hole (24), a second rubber clamp strip (26) is fixed on the surface of the introduction groove (25), the width of the second rubber clamp strip (26) is greater than the depth of the introduction groove (25), the second rubber clamp strip (26) is clamped between the screw rod (27) and the through hole (24), and a plurality of introduction grooves (25) are provided, and the plurality of introduction grooves (25) are arranged and distributed along the arc surface of the through hole (24).

4. The explosion-proof battery pack upper cover sealing assembly according to claim 1, Features: The bottom surface of the installation groove (23) is provided with a telescopic groove (28), the telescopic groove (28) is an annular groove, the elastic support frame (29) is a stage-shaped ring plate structure, the bottom surface of the elastic support frame (29) is fixed to the bottom surface of the telescopic groove (28), the height of the elastic support frame (29) is greater than the telescopic groove (28), the top notch size of the elastic support frame (29) is equal to the opening size of the perforation (24), the surface of the elastic support frame (29) is integrally formed with an elastic transition ring (30), the elastic transition ring (30) is a ring plate structure with a circular arc surface in cross section, and a rubber gasket (31) is fixed to the bottom surface of the installation groove (23), and the rubber gasket (31) is located below the top plate of the elastic support frame (29).

5. The explosion-proof battery pack upper cover sealing assembly according to claim 1, Features: The surface of the installation groove (23) is provided with a slot (34), and the slot (34) is provided with two groups. The two groups of slots (34) are symmetrically distributed about the installation groove (23). The positioning plug (33) is movably inserted in the slot (34). The top surface of the sealing cover (1) is provided with a slide rail groove (35). The slide rail groove (35) and the through hole (24) are connected. The long side length of the slide rail groove (35) is shorter than the long side length of the slot (34). The inside of the slide rail groove (35) is slidably connected with a paddle (36), and the paddle (36) is fixed to the top surface of one end of the positioning plug (33) inserted into the slot (34).

6. The explosion-proof battery pack upper cover sealing assembly according to claim 5, Features: A traction plate (37) is fixed on the top surface of the paddle (36), a finger groove is provided on the surface of the traction plate (37), and the bottom width of the traction plate (37) is equal to the length of the long side of the slide rail groove (35).

7. The explosion-proof battery pack upper cover sealing assembly according to claim 5, Features: The surface of the paddle (36) is provided with a second through hole (38), and a guide rod (39) is movably inserted inside the second through hole (38). The two ends of the guide rod (39) are respectively fixed on two parallel side walls of the slide rail groove (35). A spring (40) is sleeved on the rod body of the guide rod (39), and the spring (40) is fixed between the paddle (36) and the slide rail groove (35).

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