Box body and energy storage equipment

Abstract

The embodiment of the utility model relates to the technical field of energy storage, and discloses a box body and energy storage equipment, the box body comprises a cover plate, a shell and a sealing assembly, the shell is provided with an opening and a convex part, the convex part is adjacent to the opening, the cover plate is arranged on the shell, the cover plate seals the opening, the sealing assembly comprises a first sealing element, the first sealing element has elasticity, and the first sealing element has elasticity. The first sealing part is arranged between the cover plate and the shell, the sealing part surrounds the opening, the first sealing part abuts against the shell and the cover plate, and when the first sealing part abuts against the shell and the cover plate, the protruding part abuts against the cover plate and is used for limiting the compression amount of the cover plate for compressing the first sealing part. By means of the mode, the compression amount of the first sealing piece can be limited, the probability that the first sealing piece is damaged due to excessive extrusion is further reduced, and therefore the influence on the connection sealing performance of the cover plate and the shell is reduced.

Description

Technical Field

[0001] The embodiments of the present utility model relate to the technical field of energy storage, and particularly to a box body and an energy storage device. Background Art

[0002] Energy storage devices usually use box bodies made of sheet metal parts. The box body generally consists of a cover plate and a shell. The shell is provided with an opening and a receiving space that communicate with each other. A sealing strip is usually provided between the cover plate and the shell. During the process of locking the cover plate to the shell, it is difficult to accurately control or limit the compression ratio or compression amount of the sealing strip. During long-term use, the sealing strip is easily over-extruded, resulting in damage to the sealing strip and loss of elasticity, and reducing the sealing performance of the box body. Summary of the Utility Model

[0003] The main technical problem to be solved by the embodiments of the present utility model is to provide a box body and an energy storage device. The box body includes a cover plate and a shell, and is sealed between the cover plate and the shell through a first sealing member, which can limit the compression amount of the first sealing member and reduce the probability of damage caused by over-extrusion of the first sealing member.

[0004] To solve the above technical problem, a technical solution adopted by the embodiments of the present utility model is: to provide a box body, including a cover plate, a shell and a sealing assembly; the shell is provided with an opening and a convex portion, the convex portion is adjacent to the opening, the cover plate is arranged on the shell, and the cover plate closes the opening; the sealing assembly includes a first sealing member, the first sealing member has elasticity, the first sealing member is arranged between the cover plate and the shell, the sealing member surrounds the opening, and the first sealing member abuts against the shell and the cover plate respectively; wherein, when the first sealing member abuts against the shell and the cover plate respectively, the convex portion abuts against the cover plate, and the convex portion is used to limit the compression amount of the cover plate compressing the first sealing member.

[0005] Optionally, the first sealing member is provided with a through hole, and the convex portion passes through the through hole and then abuts against the cover plate.

[0006] Optionally, the cover plate is provided with a through hole, and the shell is provided with a mounting hole, and the through hole and the mounting hole are aligned; the box body includes a fastening assembly, and the fastening assembly passes through the through hole and then extends into the mounting hole to be fixed, so as to fix the cover plate and the shell.

[0007] Optionally, the mounting hole is a blind hole, the fastening assembly includes a riveting part, the riveting part includes a connecting part, a first riveting part and a second riveting part, the first riveting part is located in the blind hole, the first riveting part abuts against the hole wall of the blind hole, one end of the connecting part is connected to the first riveting part, the other end of the connecting part passes through the through hole and is connected to the second riveting part, and the second riveting part abuts against the surface of the cover plate facing away from the shell.

[0008] Optionally, the sealing assembly includes a second seal, the second seal is disposed between the cover plate and the housing, the second seal abuts against the cover plate and the housing respectively, the second seal surrounds the opening, and the first seal is closer to the opening than the second seal.

[0009] Optionally, the number of the second seals is plural, the plural second seals are sleeved in sequence, and any two adjacent second seals are spaced apart.

[0010] Optionally, the cover plate extends several first baffles towards the housing, the several first baffles are sleeved in sequence, and any two adjacent first baffles are spaced apart; the housing extends several second baffles towards the cover plate, the several second baffles are sleeved in sequence, and any two adjacent second baffles are spaced apart; wherein, one of the first baffles is inserted between two adjacent second baffles, and one of the second seals is located between one of the first baffles and one of the second baffles adjacent thereto.

[0011] Optionally, the sealing assembly includes a sealing welding ring, the sealing welding ring is welded to the gap between the cover plate and the housing, and the first seal is closer to the opening than the sealing welding ring.

[0012] Optionally, the edge of the cover plate has a first arc surface, the edge of the housing has a second arc surface, and the first arc surface, the second arc surface and the sealing welding ring enclose a guide groove for draining.

[0013] To solve the above technical problems, another technical solution adopted in the embodiment of the present utility model is: to provide an energy storage device including the above-mentioned box body.

[0014] The beneficial effects of the embodiment of the present utility model are: different from the prior art, the embodiment of the present utility model provides a box body including a cover plate, a housing and a sealing assembly. The housing is provided with an opening and a convex portion adjacent to the opening. The cover plate is disposed on the housing, and the cover plate closes the opening. The sealing assembly includes a first seal having elasticity. The first seal is disposed between the cover plate and the housing, the seal surrounds the opening, and the first seal abuts against the housing and the cover plate respectively. Wherein, when the first seal abuts against the housing and the cover plate respectively, the convex portion abuts against the cover plate, and the convex portion is used to limit the compression amount of the first seal compressed by the cover plate. By the above method, the embodiment of the present utility model can limit the compression amount of the first seal, thereby reducing the probability of damage to the first seal caused by excessive extrusion, and thus reducing the influence on the connection sealing performance between the cover plate and the housing. Description of the Drawings

[0015] To more clearly illustrate the technical solutions in the specific embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0016] Figure 1 is the overall structure schematic diagram of the box body in the embodiment of the present invention Figure 1 ;

[0017] Figure 2 is the overall structure schematic diagram of the box body in the embodiment of the present invention Figure 2 ;

[0018] Figure 3 is the exploded view of the box body in the embodiment of the present invention;

[0019] Figure 4 is the partial structure schematic diagram of the box body in the embodiment of the present invention Figure 1 ;

[0020] Figure 5 is the partial structure schematic diagram of the box body in the embodiment of the present invention Figure 2 ;

[0021] Figure 6 is the cross-section of the box body in the embodiment of the present invention Figure 1 ;

[0022] Figure 7 is the cross-section of the box body in the embodiment of the present invention Figure 2 ;

[0023] Figure 8 is the cross-sectional view of the housing in the embodiment of the present invention.

[0024] Description of reference numerals:

[0025] 100 Box body;

[0026] 1 Cover plate, 11 Through hole, 12 First arc surface;

[0027] 2 Housing, 21 Opening, 22 Protrusion, 23 Mounting hole, 24 Second arc surface, 25 Receiving space;

[0028] 3 Sealing assembly, 31 First seal, 311 Through hole, 32 Second seal;

[0029] 4 Fastening assembly, 41 Rivet;

[0030] 5 Breather valve;

[0031] 6 Guide groove. Detailed implementation manners

[0032] For ease of understanding the present utility model, the following will, with reference to the accompanying drawings and specific embodiments, provide a more detailed description of the present utility model. It should be noted that when an element is expressed as "fixed to" another element, it can be directly on the other element, or there can be one or more intermediate elements therebetween. When an element is expressed as "connected to" another element, it can be directly connected to the other element, or there can be one or more intermediate elements therebetween. The terms "upper", "lower", "inner", "outer", "vertical", "horizontal", etc. used in this specification indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0033] Unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the specification of the present utility model are only for the purpose of describing specific embodiments and are not used to limit the present utility model. The term "and / or" used in this specification includes any and all combinations of one or more of the related listed items.

[0034] In addition, the technical features involved in different embodiments of the present utility model described below can be combined with each other as long as they do not conflict with each other.

[0035] A sheet metal box is a box structure processed from sheet metal materials (such as thin steel plates or thin aluminum plates) and is used to accommodate equipment components, and is widely used in the field of energy storage technology.

[0036] Currently, a sheet metal box usually includes a cover plate and a housing. The housing is provided with an opening and a receiving space that communicate with each other. A sealing strip is usually provided between the cover plate and the housing. During the process of locking the cover plate to the housing, it is difficult to precisely control or limit the compression ratio or compression amount of the sealing strip. During long-term use, the sealing strip is easily subjected to excessive extrusion, resulting in damage to the sealing strip and loss of elasticity, causing the sealing performance of the sheet metal box to decrease.

[0037] In view of this, the present utility model provides an embodiment of a box body 100. A first sealing member 31 is provided between the cover plate 1 and the housing 2, which can limit the compression amount of the first sealing member 31, thereby reducing the probability of damage to the first sealing member 31 caused by excessive extrusion, and thus reducing the impact on the connection sealing performance between the cover plate 1 and the housing 2.

[0038] For the above box body 100, please refer toFigures 1 to 3 , the box body 100 includes a cover plate 1, a housing 2 and a sealing assembly 3. The housing 2 is provided with an opening 21 and a convex portion 22. The convex portion 22 is adjacent to the opening 21. The cover plate 1 is arranged on the housing 2, and the cover plate 1 closes the opening 21. The sealing assembly 3 includes a first sealing member 31. The first sealing member 31 has elasticity. The first sealing member 31 is arranged between the cover plate 1 and the housing 2. The sealing member surrounds the opening 21. The first sealing member 31 abuts against the housing 2 and the cover plate 1 respectively. Wherein, when the first sealing member 31 abuts against the housing 2 and the cover plate 1 respectively, the convex portion 22 abuts against the cover plate 1, and the convex portion 22 is used to limit the compression amount of the first sealing member 31 compressed by the cover plate 1.

[0039] Please refer to Figures 3 to 5 , the first sealing member 31 is provided with a through hole 311, and the convex portion 22 passes through the through hole 311 and then abuts against the cover plate 1. Through the arrangement of the through hole 311 and the convex portion 22, when the first sealing member 31 is arranged between the cover plate 1 and the housing 2, a positioning effect can be achieved, and the offset of the first sealing member 31 can be reduced. In addition, through the arrangement of the through hole 311 and the convex portion 22, the first sealing member 31 can be uniformly pressed, the excessive local pressure on the first sealing member 31 can be reduced, and further the deformation caused by the uneven pressure on the first sealing member 31 can be reduced, thereby reducing the influence on the sealing effect of the first sealing member 31.

[0040] Please refer to Figures 3 to 5 , the cover plate 1 is provided with a through hole 11, and the housing 2 is provided with a mounting hole 23. The through hole 11 and the mounting hole 23 are aligned. The box body 100 includes a fastening assembly 4. The fastening assembly 4 passes through the through hole 11 and then extends into the mounting hole 23 for fixation, so that the cover plate 1 and the housing 2 are fixed. Through the above-mentioned fastening assembly 4, the cover plate 1 is pressed and fixed to the housing 2, and the first sealing member 31 seals the gap between the cover plate 1 and the housing 2.

[0041] In some embodiments, please refer to Figures 6 to 8 , the housing 2 is provided with a plurality of mounting holes 23 and a plurality of convex portions 22. The plurality of mounting holes 23 are arranged at equal intervals. Two convex portions 22 are arranged on both sides of one mounting hole 23. The first sealing member 31 is provided with a plurality of through holes 311. The number of the through holes 311 is equal to the number of the convex portions 22. One convex portion 22 corresponds to one through hole 311. In this way, the compression of the first sealing member 31 at the mounting hole 23 can be uniform, and the sealing effect around the mounting hole 23 can be kept consistent.

[0042] In some embodiments, please refer to Figures 3 to 5, the mounting hole 23 is a blind hole, the fastening assembly 4 includes a rivet 41, the rivet 41 includes a connecting portion, a first rivet portion and a second rivet portion, the first rivet portion is located in the blind hole, the first rivet portion abuts against the hole wall of the blind hole, one end of the connecting portion is connected to the first rivet portion, the other end of the connecting portion passes through the through hole 11 and is connected to the second rivet portion, and the second rivet portion abuts against the surface of the cover plate 1 away from the shell 2. Wherein, the cover plate 1 and the shell 2 are both thin-walled structures, and the fastening of the cover plate 1 and the shell 2 by the above-mentioned rivet 41 can reduce the probability of deformation or rupture of the cover plate 1 and the shell 2 due to excessive force applied during the fastening process, and reduce the impact on the structural strength of the cover plate 1 and the shell 2 during long-term use. At the same time, the fastening of the cover plate 1 and the shell 2 by the above-mentioned rivet 41 can make the stress evenly distributed in the cover plate 1 and the shell 2 with thin-walled structures, and reduce the stress concentration that causes cracks in the cover plate 1 or the shell 2. In addition, a bidirectional fixing structure is formed by the first rivet portion and the second rivet portion, thereby improving the connection stability between the cover plate 1 and the shell 2 and reducing the loosening of the cover plate 1 and the shell 2 when subjected to vibration or collision.

[0043] In some embodiments, see Figures 6 to 8 When the housing 2 is provided with a plurality of mounting holes 23, the cover plate 1 is provided with a plurality of through holes 11, and the fastening assembly 4 includes a plurality of rivets 41, one through hole 11 is aligned with one mounting hole 23, and one rivet 41 passes through one through hole 11 and abuts against one mounting hole 23. In the above manner, the connection stability between the cover plate 1 and the housing 2 can be improved.

[0044] In some embodiments, the sealing assembly 3 further includes a sealant (not shown), and the sealant (not shown) covers the second riveting part and a portion of the cover plate 1. In the above manner, the gap between the second riveting part and the cover plate 1 can be sealed, the sealing between the second riveting part and the cover plate 1 can be improved, the liquid can be reduced from penetrating between the second riveting part and the cover plate 1, and the local sealing effect can be enhanced.

[0045] See also Figures 3 to 5 The sealing assembly 3 includes a second sealing member 32, which is disposed between the cover plate 1 and the housing 2. The second sealing member 32 abuts against the cover plate 1 and the housing 2 respectively, and surrounds the opening 21. The first sealing member 31 is closer to the opening 21 than the second sealing member 32. In the above manner, the first sealing member 31 and the second sealing member 32 are sequentially sleeved in a direction from the center of the opening 21 toward the periphery of the opening 21, forming a double sealing structure, thereby improving the sealing performance between the cover plate 1 and the housing 2.

[0046] In some embodiments, the second seal 32 is made of a conventional waterproof material, and the first seal 31 is made of a waterproof material with a memory function. In this way, on the premise of improving the sealing performance between the cover plate 1 and the housing 2 through a double-sealing structure, the material cost can be reduced. It can be understood that, including but not limited to, defining that the first seal 31 is made of a waterproof material with a memory function, as long as one of the first seal 31 and the second seal 32 is made of a waterproof material with a memory function, it can achieve the reduction of material cost on the premise of improving the sealing performance between the cover plate 1 and the housing 2 through a double-sealing structure. It can also be understood that the conventional waterproof materials include but are not limited to at least one of silicone, ethylene propylene diene monomer (EPDM), fluororubber (FKM), and polyurethane (PU), and the waterproof materials with a memory function include but are not limited to at least one of memory silicone or memory polyurethane.

[0047] In some embodiments, the number of the second seals 32 is multiple, and the multiple second seals 32 are sleeved in sequence, and any two adjacent second seals 32 are spaced apart. In this way, along the direction from the center of the opening 21 towards the periphery of the opening 21, the multiple second seals 32 are sleeved in sequence to form a multi-layer sealing structure, increasing the path length of the liquid during the infiltration process, that is, the liquid needs to pass through multiple second seals 32 during the infiltration process, thereby increasing the difficulty of liquid infiltration and improving the sealing effect between the cover plate 1 and the housing 2.

[0048] In some embodiments, the cover plate 1 extends a plurality of first baffles towards the housing 2, the plurality of first baffles are sleeved in sequence, and any two adjacent first baffles are spaced apart. The housing 2 extends a plurality of second baffles towards the cover plate 1, the plurality of second baffles are sleeved in sequence, and any two adjacent second baffles are spaced apart. Among them, one first baffle is inserted between two adjacent second baffles, and one second seal 32 is located between one adjacent first baffle and one second baffle. In this way, along the direction from the center of the opening 21 towards the periphery of the opening 21, the multiple first baffles are sleeved in sequence on the side of the cover plate 1 facing the housing 2, the multiple second baffles are sleeved in sequence on the side of the housing 2 facing the cover plate 1, and the multiple first baffles and the multiple second baffles are arranged in an alternating manner. The alternating arrangement increases the complexity of the sealing structure between the cover plate 1 and the housing 2. For example, one first baffle, one second seal 32, and one second baffle form a sealing combination in sequence, and multiple sealing combinations are jointly configured to play a sealing role. Even if the liquid can pass through the combination of baffles and seals of a certain layer, it will be blocked layer by layer in the combination of baffles and seals of the remaining layers in the next step, further increasing the path length of the liquid during the infiltration process, that is, the liquid needs to pass through multiple sealing combinations during the infiltration process, thereby further increasing the difficulty of liquid infiltration and further improving the sealing effect between the cover plate 1 and the housing 2.

[0049] In some embodiments, the first baffle is a first rib formed by the cover plate 1 protruding vertically towards the housing 2, and the first rib is integrally formed with the cover plate 1. The second baffle is a second rib formed by the housing 2 protruding vertically towards the cover plate 1, and the second rib is integrally formed with the housing 2.

[0050] Please refer to Figures 3 to 5 , the sealing assembly 3 includes a sealing welding ring (not shown in the figure), the sealing welding ring (not shown in the figure) is welded to the gap between the cover plate 1 and the housing 2, and the first seal 31 is closer to the opening 21 than the sealing welding ring (not shown in the figure).

[0051] In some embodiments, along the direction from the center of the opening 21 towards the periphery of the opening 21, the first seal 31, the second seal 32 and the sealing welding ring are arranged in sequence to form a multi-layer sealing structure. In this way, it is possible to prevent the first seal and the second seal 32 from being directly exposed to the air or directly contacting the space, thereby reducing the oxidation damage of the first seal 31 and the second seal 32, and thus prolonging the service life of the first seal 31 and the second seal 32.

[0052] In some embodiments, the sealing welding ring is formed by a full welding process. In this way, it is possible to prevent insufficient sealing between the cover plate 1 and the housing 2 due to insufficient welding points.

[0053] Please refer to Figures 3 to 5 , the edge of the cover plate 1 has a first arc surface 12, the edge of the housing 2 has a second arc surface 24, and the first arc surface 12, the second arc surface 24 and the sealing welding ring enclose a guide groove 6 for draining. In this way, it is possible to guide the liquid between the cover plate 1 and the housing 2 to flow away, reducing the liquid retention or accumulation between the cover plate 1 and the housing 2.

[0054] Please refer to Figures 3 to 5 , the housing 2 is provided with a receiving space 25, the receiving space 25 communicates with the opening 21, the box body 100 includes a breathing valve 5, the breathing valve 5 is arranged on the cover plate 1 or the housing 2, the breathing valve 5 communicates with the receiving space 25, and the breathing valve 5 is used to balance the internal and external pressures of the box body 100 when there is a pressure difference inside and outside the box body 100 caused by the temperature change of the box body 100. In this way, it is possible to balance the internal and external pressures of the box body 100 and reduce the probability of failure of the first seal 31 and / or the second seal 32 due to excessive internal and external pressure differences of the box body 100.

[0055] Regarding the above box body 100, it should be noted that the mating structure between the cover plate 1 and the opening 21, and the mating structure between the fastening assembly 4 and the mounting hole 23 include, but are not limited to, at least one of the top, side or bottom of the housing 2, that is, the opening 21 and the mounting hole 23 can be located at least one of the top, side or bottom of the housing, the cover plate 1 and the opening 21 are correspondingly mated, and the fastening assembly 4 and the mounting hole 23 are correspondingly mated.

[0056] An embodiment of the present utility model provides a box body 100, which includes a cover plate 1, a housing 2, and a sealing assembly 3. The housing 2 is provided with an opening 21 and a convex portion 22. The convex portion 22 is adjacent to the opening 21. The cover plate 1 is disposed on the housing 2, and the cover plate 1 closes the opening 21. The sealing assembly 3 includes a first sealing member 31. The first sealing member 31 has elasticity. The first sealing member 31 is disposed between the cover plate 1 and the housing 2. The sealing member surrounds the opening 21. The first sealing member 31 abuts against the housing 2 and the cover plate 1 respectively. Wherein, when the first sealing member 31 abuts against the housing 2 and the cover plate 1 respectively, the convex portion 22 abuts against the cover plate 1. The convex portion 22 is used to limit the compression amount of the first sealing member 31 compressed by the cover plate 1. By the above method, the embodiment of the present utility model can limit the compression amount of the first sealing member 31, thereby reducing the probability of damage to the first sealing member 31 caused by excessive extrusion, and thus reducing the influence on the connection sealing performance between the cover plate 1 and the housing 2.

[0057] The present utility model further provides an embodiment of an energy storage device. The energy storage device includes the above box body. For the specific structure and function of the above box body, reference can be made to the above embodiment, and details will not be described herein one by one.

[0058] The above are only the embodiments of the present utility model, and thus do not limit the patent scope of the present utility model. Any equivalent structure or equivalent process transformation made by using the content of the specification and drawings of the present utility model, or directly or indirectly applied in other related technical fields, shall be similarly included in the patent protection scope of the present utility model.

Claims

1. A box body, characterized in that, Comprising: Cover plate; A housing, provided with an opening and a convex portion, the convex portion being adjacent to the opening, the cover plate being disposed on the housing, and the cover plate closing the opening; A sealing assembly, including a first seal, the first seal being elastic, the first seal being disposed between the cover plate and the housing, the seal surrounding the opening, and the first seal respectively abutting against the housing and the cover plate; Wherein, when the first seal respectively abuts against the housing and the cover plate, the convex portion abuts against the cover plate, and the convex portion is used to limit the compression amount of the first seal compressed by the cover plate.

2. The box according to claim 1, wherein: The first seal is provided with a through hole, and the convex portion passes through the through hole and then abuts against the cover plate.

3. The box according to claim 1, wherein: The cover plate is provided with a through hole, and the housing is provided with a mounting hole, and the through hole and the mounting hole are aligned; The box includes a fastening assembly, and the fastening assembly passes through the through hole and then extends into the mounting hole for fixing, so as to fix the cover plate and the housing.

4. The box according to claim 3, wherein: The mounting hole is a blind hole, the fastening assembly includes a riveting part, the riveting part includes a connecting part, a first riveting part and a second riveting part, the first riveting part is located in the blind hole, the first riveting part abuts against the hole wall of the blind hole, one end of the connecting part is connected to the first riveting part, the other end of the connecting part passes through the through hole and is connected to the second riveting part, and the second riveting part abuts against the surface of the cover plate facing away from the housing.

5. The box according to claim 1, wherein: The sealing assembly includes a second seal, the second seal is disposed between the cover plate and the housing, the second seal respectively abuts against the cover plate and the housing, the second seal surrounds the opening, and the first seal is closer to the opening than the second seal.

6. The box according to claim 5, wherein: The number of the second seals is multiple, and the multiple second seals are sleeved in sequence, and any two adjacent second seals are spaced apart.

7. The box according to claim 6, wherein: The cover plate extends several first baffles towards the housing, the several first baffles are sleeved in sequence, and any two adjacent first baffles are spaced apart; The housing extends several second baffles towards the cover plate, the several second baffles are sleeved in sequence, and any two adjacent second baffles are spaced apart; Wherein, one of the first baffles is inserted between two adjacent second baffles, and one of the second seals is located between one of the first baffles and one of the second baffles.

8. The box according to any one of claims 1-7, wherein: The sealing assembly includes a sealing welding ring, and the sealing welding ring is welded to the gap between the cover plate and the housing, and the first seal is closer to the opening than the sealing welding ring.

9. The box according to claim 8, wherein: The edge of the cover plate has a first arc surface, the edge of the housing has a second arc surface, and the first arc surface, the second arc surface and the sealed welding ring enclose to form a guide groove for draining.

10. An energy storage device, characterized in that, Comprising a box body according to any one of claims 1-9.

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