Battery pack sealing structure and battery pack

Abstract

The utility model discloses a battery pack sealing structure and a battery pack, the battery pack sealing structure comprises a box body and a box cover, the box body is internally provided with an accommodating cavity, and the top end of the box body is provided with a pick-and-place opening communicated with the accommodating cavity. The box cover comprises a connecting plate surrounding the box body, and the connecting plate is attached to and detachably connected with the side wall of the box body so that the box cover can cover the taking and placing opening. The containing cavity is used for containing the battery, the connecting plate of the box cover surrounds the box body, and due to the fact that the connecting plate is attached to the side wall of the box body and detachably connected with the side wall of the box body, the box cover and the box body are connected with each other, and then the box cover seals the taking and placing opening. As the connecting plates are not perpendicular to the side wall of the box body but attached to the side wall of the box body, the battery packs can be tightly stacked, a large number of gaps between the battery packs are avoided, and the space utilization rate of battery pack stacking is increased.

Description

Technical Field

[0001] The utility model relates to the field of battery production, in particular to a battery pack sealing structure and a battery pack. Background Art

[0002] A battery pack generally includes: a battery pack housing and batteries located inside the battery pack housing. For the existing battery pack housing, reference can be made to the patent with the application number CN202211125705.7, which has a box body and a box cover. The box body is used to hold the batteries, and the box cover is detachably sealed on the opening at the top of the box body to seal and protect the batteries.

[0003] However, the box body and the box cover respectively have an annular lower connecting plate and an upper connecting plate. The lower connecting plate and the upper connecting plate are butt-jointed with each other, so that the box body and the box cover are connected to each other. Since both the lower connecting plate and the upper connecting plate are perpendicular to the side wall of the box body, gaps are inevitably formed between the side walls of the box bodies of each battery pack during the stacking process of the battery packs, resulting in low space utilization rate of the stacked battery packs.

[0004] Therefore, how to improve the space utilization rate of the stacked battery packs is a technical problem to be solved urgently. Summary of the Utility Model

[0005] The purpose of the utility model is to overcome the above technical deficiencies and propose a battery pack sealing structure to solve the technical problem of how to improve the space utilization rate of the stacked battery packs in the prior art.

[0006] To achieve the above technical purpose, the utility model adopts the following technical solutions:

[0007] The utility model provides a battery pack sealing structure, which includes:

[0008] A box body, which has an accommodation cavity therein, and an access opening communicating with the accommodation cavity is opened at the top end of the box body;

[0009] A box cover, which includes a connecting plate surrounding the box body, and the connecting plate is attached to and detachably connected to the side wall of the box body so that the box cover seals the access opening.

[0010] In some embodiments, a plurality of connection holes are formed in the connecting plate along the circumferential direction, and a plurality of mating holes corresponding to the plurality of connection holes one by one are formed in the side wall of the box body. Bolts are passed through the connection holes and the mating holes to connect the connecting plate and the side wall of the box body to each other.

[0011] In some embodiments, the box body also has a plurality of nuts corresponding to the plurality of mating holes one by one. The nuts are fixed to the inner wall of the box body and butt against the connection holes. Bolts are passed through the connection holes and the mating holes to connect the connecting plate and the side wall of the box body to each other.

[0012] In some embodiments, the battery pack sealing structure further includes a gasket, and the gasket is embedded between the box body and the box cover.

[0013] In some embodiments, the cross-section of the gasket is L-shaped, so that the gasket respectively fits the side wall and the top surface of the box body.

[0014] In some embodiments, the gasket is a rubber gasket.

[0015] In some embodiments, the gap between the connecting plate and the side wall of the box body is filled with sealant.

[0016] In some embodiments, a plurality of clamping grooves are formed at the top end of the box body, the box cover has a plurality of clamping keys corresponding to the plurality of clamping grooves one by one, and the clamping keys are embedded in the clamping grooves.

[0017] In some embodiments, a plurality of limiting grooves are formed inside the box body.

[0018] A battery pack, the above battery pack sealing structure.

[0019] The accommodating cavity is used to accommodate the battery, and the connecting plate of the box cover surrounds the box body. Since the connecting plate is attached to and detachably connected to the side wall of the box body, the box cover and the box body are connected to each other, and then the box cover seals the access opening. Since the connecting plate is not perpendicular to the side wall of the box body, but fits the side wall of the box body, the battery packs can be tightly stacked, avoiding a large number of gaps between the battery packs, and improving the space utilization rate of the stacked battery packs. Description of the Drawings

[0020] Figure 1 is a schematic structural diagram of the battery pack sealing structure provided by the embodiment of the present invention;

[0021] Figure 2 is a partial schematic diagram of part A in the embodiment of the present invention;

[0022] Description of the reference numerals: box body 100, access opening 110, mating hole 120, nut 130, clamping groove 140, limiting groove 150, box cover 200, connecting plate 210, connecting hole 211, clamping key 220, gasket 300. Detailed Embodiments

[0023] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, and are not used to limit the present invention.

[0024] In order to solve the technical problem of how to improve the space utilization rate of battery pack stacking, the present utility model provides a battery pack sealing structure, which can make each battery pack be tightly stacked, avoid a large number of gaps between battery packs, and improve the space utilization rate of battery pack stacking.

[0025] It should be noted that the battery pack sealing structure described in the present utility model is used for but not limited to battery pack encapsulation, etc. For the convenience of description, in the present utility model, only the case where the battery pack sealing structure is applied to battery pack encapsulation is taken as an example for description, and the principle of the battery pack sealing structure applied to other types of devices is substantially the same as that applied to battery pack encapsulation, and will not be elaborated one by one here.

[0026] Please refer to Figure 1 , Figure 1 , which is a schematic structural diagram of the battery pack sealing structure in an embodiment of the present utility model. The battery pack sealing structure includes a box body 100 and a box cover 200. The box body 100 has an accommodating cavity, and a placing and taking opening 110 communicating with the accommodating cavity is opened at the top end of the box body 100. The box cover 200 includes a connecting plate 210 surrounding the box body 100. The connecting plate 210 is attached to and detachably connected to the side wall of the box body 100 so that the box cover 200 seals the placing and taking opening 110.

[0027] In this embodiment, the accommodating cavity is used to accommodate batteries. The connecting plate 210 of the box cover 200 surrounds the box body 100. Since the connecting plate 210 is attached to and detachably connected to the side wall of the box body 100, the box cover 200 and the box body 100 are connected to each other, and further the box cover 200 seals the placing and taking opening 110. Since the connecting plate 210 is not perpendicular to the side wall of the box body 100 but is attached to the side wall of the box body 100, each battery pack can be tightly stacked, avoiding a large number of gaps between battery packs, and improving the space utilization rate of battery pack stacking.

[0028] In some of these embodiments, a plurality of connecting holes 211 are formed in the connecting plate 210 along the circumferential direction, and a plurality of mating holes 120 corresponding to the plurality of connecting holes 211 one by one are formed in the side wall of the box body 100. The connecting plate 210 and the side wall of the box body 100 are connected to each other by bolts passing through the connecting holes 211 and the mating holes 120.

[0029] In this embodiment, after the box cover 200 is covered on the box body 100, the relative position of the connecting plate 210 is finely adjusted so that the connecting holes 211 and the mating holes 120 are docked with each other. Subsequently, the connecting plate 210 and the side wall of the box body 100 can be connected to each other by bolts passing through the connecting holes 211 and the mating holes 120.

[0030] Based on the above embodiments, in some of these embodiments, the box body 100 further has a number of nuts 130 that correspond one-to-one with a number of mating holes 120. The nuts 130 are fixed to the inner wall of the box body 100 and are butt-connected to the connection holes 211. Bolts pass through the connection holes 211 and the mating holes 120 to connect the connecting plate 210 and the side wall of the box body 100 to each other.

[0031] In this embodiment, since the nut 130 is fixed to the inner wall of the box body 100 and is butt-connected to the connection hole 211, after the bolt passes through the connection hole 211 and the mating hole 120, it is screwed with the nut 130, so that the connecting plate 210 and the side wall of the box body 100 can be connected to each other. Since the nut 130 is fixed to the inner wall of the box body 100, during the process of screwing the bolt and the nut 130 together, there is no need to manually fix the nut 130, thereby improving the efficiency of screwing the bolt.

[0032] In some of these embodiments, the battery pack sealing structure further includes a sealing gasket 300, and the sealing gasket 300 is embedded between the box body 100 and the box cover 200.

[0033] In this embodiment, since the sealing gasket 300 is embedded between the box body 100 and the box cover 200, the sealing performance between the box body 100 and the box cover 200 is improved.

[0034] In some of these embodiments, the cross-section of the sealing gasket 300 is L-shaped, so that the sealing gasket 300 fits against the side wall and the top surface of the box body 100 respectively.

[0035] In this embodiment, since the sealing gasket 300 fits against the side wall and the top surface of the box body 100 respectively, the sealing performance between the box body 100 and the box cover 200 can be further improved.

[0036] As long as the implementation manner of the sealing gasket 300 that can fill the mating gap between the box body 100 and the box cover 200 is feasible. In some of these embodiments, the sealing gasket 300 is a rubber sealing gasket 300.

[0037] In some of these embodiments, the gap between the connecting plate 210 and the side wall of the box body 100 is filled with sealant.

[0038] In this embodiment, on the one hand, the sealant can be used to fill the gap between the connecting plate 210 and the box body 100, thereby improving the sealing performance between the connecting plate 210 and the box body 100. On the other hand, the connecting plate 210 and the box body 100 can be more firmly connected to each other.

[0039] In some of these embodiments, a number of card slots 140 are opened at the top end of the box body 100, and the box cover 200 has a number of keys 220 that correspond one-to-one with the number of card slots 140. The keys 220 are embedded in the card slots 140.

[0040] In this embodiment, since the locking key 220 and the card slot 140 are engaged with each other, the box body 100 and the box cover 200 can be more accurately docked with each other.

[0041] In some of these embodiments, a number of limiting slots 150 are provided inside the box body 100.

[0042] In this embodiment, the battery pack is placed in the limiting slot 150 so as to be clamped and fixed in the limiting slot 150.

[0043] An embodiment of the present invention also provides a battery pack and the above-mentioned battery pack sealing structure.

[0044] For a better understanding of the present invention, the following is combined with Figure 1 to Figure 2 to describe the technical solution of the present invention in detail:

[0045] The accommodating cavity is used to accommodate the battery. Since the sealing gasket 300 is L-shaped and respectively fits the side wall and the top surface of the box body 100, the connecting plate 210 of the box cover 200 surrounds the box body 100. By finely adjusting the relative position of the connecting plate 210, the connecting hole 211 and the mating hole 120 are docked with each other. Subsequently, by passing a bolt through the connecting hole 211 and the mating hole 120, the connecting plate 210 and the box body 100 can be connected to each other, and the box body 100 and the box cover 200 clamp the sealing gasket 300, improving the sealing performance between the box cover 200 and the box body 100. Since the connecting plate 210 is not perpendicular to the side wall of the box body 100 but fits the side wall of the box body 100, the battery packs can be tightly stacked, avoiding a large number of gaps between the battery packs and improving the space utilization rate of the stacked battery packs.

[0046] The above specific embodiments of the present invention do not constitute a limitation to the protection scope of the present invention. Any other corresponding changes and deformations made according to the technical concept of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery pack sealing structure, characterized in that: include: A box body having a containing cavity therein, and a top end of the box body is provided with a receiving and placing opening communicating with the containing cavity; The box cover comprises a connecting plate surrounding the box body, wherein the connecting plate is attached to and detachably connected to the side wall of the box body so that the box cover covers the access opening.

2. The battery pack sealing structure according to claim 1, characterized in that: The connecting plate is provided with a plurality of connecting holes along the circumferential direction, and the side wall of the box body is provided with a plurality of matching holes corresponding to the connecting holes one by one. Bolts are passed through the connecting holes and the matching holes to connect the connecting plate and the side wall of the box body to each other.

3. The battery pack sealing structure according to claim 2, characterized in that: The box body also has a plurality of nuts corresponding to the plurality of matching holes one by one, the nuts are fixed to the inner wall of the box body and butt against the connecting holes, and the bolts pass through the connecting holes and the matching holes to connect the connecting plate and the side wall of the box body to each other.

4. The battery pack sealing structure according to claim 1, characterized in that: The battery pack sealing structure also includes a sealing gasket, which is embedded between the box body and the box cover.

5. The battery pack sealing structure according to claim 4, characterized in that: The cross section of the sealing gasket is L-shaped, so that the sealing gasket fits the side wall and the top surface of the box body respectively.

6. The battery pack sealing structure according to claim 5, characterized in that: The sealing gasket is a rubber sealing gasket.

7. The battery pack sealing structure according to claim 4, characterized in that: The gap between the connecting plate and the side wall of the box body is filled with sealant.

8. The battery pack sealing structure according to claim 1, characterized in that: The top of the box body is provided with a plurality of card slots, and the box cover has a plurality of card keys corresponding to the card slots one by one, and the card keys are embedded in the card slots.

9. The battery pack sealing structure according to claim 1, characterized in that: A plurality of limiting grooves are arranged inside the box body.

10. A battery pack, characterized in that: Comprising a battery pack sealing structure as described in any one of claims 1-9.

Images