CN220456545U

CN220456545U - Battery module shell, sealing member, battery module and energy storage power supply

Info

Publication number: CN220456545U
Application number: CN202321108017.XU
Authority: CN
Inventors: 明乃峰; 韦崴; 陆荐
Original assignee: No9 New Energy Technology Beijing Co ltd
Current assignee: No9 New Energy Technology Beijing Co ltd
Priority date: 2023-05-09
Filing date: 2023-05-09
Publication date: 2024-02-06
Anticipated expiration: 2033-05-09

Abstract

The utility model discloses a shell of a battery module, a sealing member, the battery module and an energy storage power supply. The shell of the battery module provided by the utility model has the advantages of high waterproof tightness of the accommodating cavity and high use safety of the battery in the accommodating cavity.

Description

Battery module shell, sealing member, battery module and energy storage power supply

Technical Field

The utility model relates to the technical field of energy storage power supplies, in particular to a shell of a battery module, a sealing piece, the battery module and an energy storage power supply.

Background

In the energy storage power supply in the related art, the inverter and the battery pack are usually installed in the same shell, and at this time, the shell is generally provided with a heat dissipation hole communicated with the inner cavity so as to ensure the heat dissipation requirement of the inverter. Because the shell is provided with the radiating holes, the waterproof of the battery core in the battery pack cannot be realized by utilizing the shell, and therefore, the battery pack needs to be subjected to waterproof treatment independently. At this time, external rainwater is easy to enter the shell through the radiating holes, and if the rainwater entering the shell is accumulated, potential safety hazards can be generated.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems in the related art to some extent.

For this reason, the embodiment of the utility model proposes a case of a battery module having the advantage of high waterproof sealability of a receiving chamber and high safety in use of a battery in the receiving chamber.

The embodiment of the utility model also provides a sealing piece, a battery module and an energy storage power supply.

The shell of the battery module comprises a bottom cover, a top cover and a first sealing piece, wherein a containing cavity for containing a battery of the power supply module is formed between the bottom cover and the top cover, the bottom cover is provided with a first groove chamber forming at least part of the containing cavity, and the top cover covers the first groove chamber of the bottom cover; the first sealing piece is arranged between the bottom cover and the top cover and extends along a cover sealing seam between the bottom cover and the top cover.

According to the shell of the battery module, the bottom cover and the top cover are connected to form the accommodating cavity for accommodating the battery of the battery module, at the moment, the first sealing piece is arranged at the joint between the bottom cover and the top cover to seal the joint, so that the accommodating cavity can be separated from the outside, the waterproof sealing performance of the accommodating cavity is ensured, and the use safety of the battery in the accommodating cavity is also improved.

In some embodiments, the bottom cover includes a peripheral wall constituting a side surface of the first chamber and a bottom wall constituting a bottom surface of the first chamber, and the top cover is connected to the peripheral wall or the bottom wall to close an upper end opening of the first chamber.

In some embodiments, the top cover includes a first seal portion that fits within the upper end opening of the first chamber, at least a portion of the first seal being sandwiched between an outer peripheral surface of the first seal portion and an inner peripheral surface of the peripheral wall.

In some embodiments, the first sealing member includes a connecting portion and a first elastic portion, the connecting portion is disposed on the first sealing portion in a fitting manner, at least part of the connecting portion is located on an outer peripheral side of the first sealing portion, and at least part of the connecting portion extends along a circumferential direction of the first sealing portion; the first elastic parts are arranged on the outer peripheral side of at least part of the connecting parts and extend along the circumferential direction of the connecting parts, the first elastic parts are clamped between the outer peripheral surface of the first sealing part and the inner peripheral surface of the peripheral wall, one or more first elastic parts are arranged, and when the number of the first elastic parts is multiple, the first elastic parts are arranged at intervals along the direction of the top cover for sealing the first groove chamber.

In some embodiments, the connecting portion and the first resilient portion are integrally formed;

and/or at least part of the first resilient part is interference fit within the seam between the connecting part and the peripheral wall of the side face of the first slot chamber;

and/or the connecting part is provided with a clamping groove which is used for clamping the connecting part on the first sealing part of the top cover;

and/or the first sealing part of the top cover is a convex edge structure extending outwards from the cover body of the top cover;

and/or the first elastic part is in a curved surface shape extending from the connecting part to the outer side of the connecting part, and the first elastic part is bent towards the opposite direction of the top cover for sealing the first groove chamber.

In some embodiments, the first seal member includes a first seal ring, and the outer peripheral surface of the first seal portion or the inner peripheral surface of the peripheral wall is provided with a first annular groove, and the first seal ring is fitted in the first annular groove.

In some embodiments, the inner peripheral surface of the peripheral wall is provided with a limit flange, the limit flange and the first sealing part are arranged in the direction of covering the first groove chamber by the top cover, and the first sealing piece comprises a second sealing ring which is clamped between the upper surface of the limit flange and the lower end surface of the first sealing part.

In some embodiments, the top cover comprises a second sealing part, the second sealing part and the peripheral wall are arranged in the direction that the top cover covers the first groove chamber, the upper end face of the peripheral wall or the lower end face of the second sealing part is provided with a second annular groove, the first sealing part comprises a third sealing ring, and at least part of the third sealing ring is matched in the second annular groove.

In some embodiments, the first seal is made of any one of rubber, silicone, and sealant.

In some embodiments, the top cover is provided with a first connecting hole, the first connecting hole is located at the inner side of the first sealing member, the peripheral wall or the bottom wall is provided with a first threaded hole, and the housing of the battery module further comprises a first threaded member penetrating through the first connecting hole and in threaded engagement with the first threaded hole so that the top cover is connected with the bottom cover.

In some embodiments, the first screw comprises a first bolt, the upper surface of the top cover is provided with a countersink communicated with the first connecting hole, the axial dimension of the countersink is larger than that of the head of the first bolt, the head of the first bolt is matched in the countersink and is abutted with the bottom surface of the countersink, wherein,

the housing of the battery module further includes a second seal that fits within and blocks the counterbore.

In some embodiments, the second sealing element includes a supporting portion and a second elastic portion, where the supporting portion is columnar and extends along an axial direction of the counterbore, the second elastic portion extends along a circumferential direction of the supporting portion, and the second elastic portion is sandwiched between a circumferential surface of the supporting portion and a wall surface of the counterbore, where one or more second elastic portions are provided, and when there are a plurality of second elastic portions, a plurality of second elastic portions are all provided on a circumferential side of the supporting portion and are arranged at intervals along the axial direction of the supporting portion.

In some embodiments, the lower end surface of the supporting part is provided with an avoidance hole, and the avoidance hole extends along the axial direction of the supporting part and is a blind hole;

and/or the supporting part and the second elastic part are integrally formed, and at least part of the second elastic part is in interference fit in a joint between the supporting part and the inner peripheral wall of the counter bore;

and/or the second elastic part is in a curved surface shape extending from the supporting part to the outer side of the supporting part, and the second elastic part is bent towards the opposite direction of the second sealing piece for sealing the counter bore.

In some embodiments, the housing of the battery module further includes a side case disposed at least one outer side of the peripheral wall.

In some embodiments, a second connection hole is formed in the peripheral wall, a second threaded hole is formed in a side of the side case facing the peripheral wall, and the housing of the battery module further includes a second screw member penetrating the second connection hole and threadedly engaged with the second threaded hole.

In some embodiments, the housing of the battery module further comprises a third seal, the second screw comprises a second bolt, the third seal is sleeved on a stud of the second bolt, and the third seal is clamped between the peripheral wall and the head of the second bolt.

In some embodiments, the third seal comprises an elastomeric gasket;

or, the third sealing piece comprises an annular base plate and a first annular raised line and a second annular raised line which are respectively arranged on two sides of the annular base plate, and the first annular raised line and the second annular raised line are respectively connected with the peripheral wall and the head of the second bolt in a sealing way through ultrasonic waves.

According to the sealing piece provided by the embodiment of the utility model, the sealing piece is used for sealing a seam between a first pair of opponent pieces and a second pair of opponent pieces which are matched with each other, and comprises a connecting part and an elastic part, wherein the connecting part is used for being attached to the first pair of opponent pieces, and the connecting part is of an annular structure which can be arranged along the first pair of opponent pieces in an extending way; the elastic part is connected with the connecting part, the elastic part protrudes out of the outer peripheral surface or the inner peripheral surface of the connecting part, the elastic part extends along the length direction of the connecting part and is used for being clamped between the connecting part and the second pair of workpieces, one or more elastic parts are arranged, and when the elastic parts are arranged in a plurality, the elastic parts are arranged at intervals along the vertical direction of the extending direction of the connecting part.

According to the sealing piece, the connecting part is connected with the first opponent piece and is in fit contact with the first opponent piece, and after the first opponent piece is connected with the second opponent piece, the elastic part of the sealing piece is clamped between the connecting part and the second opponent piece, so that effective sealing of a joint between the first opponent piece and the second opponent piece is achieved, and the waterproof effect of the connecting part of the first opponent piece and the second opponent piece is good.

In some embodiments, the connecting portion and the elastic portion are integrally formed;

and/or at least a portion of the resilient portion is capable of an interference fit within a seam between the first and second pair of hand pieces;

and/or the elastic part is in a curved surface shape extending from the connecting part to the outer side of the connecting part, and the elastic part is bent towards the direction opposite to the matching direction of the first pair of pieces and the second pair of pieces.

In some embodiments, the connection portion is provided with an annular clamping groove for interference fit with at least part of the first pair of hand pieces;

or, the first pair of hand pieces are provided with clamping grooves, and the connecting part is provided with a limit flange for being in plug-in fit with the clamping grooves.

A battery module according to an embodiment of the present utility model includes a case of the battery module described in any of the above embodiments or a case sealed with the seal described in any of the above embodiments, and a battery provided in the case.

Technical advantages of the battery module according to the embodiment of the present utility model are the same as those of the case and the seal member of the battery module of the above embodiment, and will not be described here again.

An energy storage power supply according to an embodiment of the present utility model includes an inverter assembly and at least one battery module as described in the above embodiment; the inverter assembly is electrically connected to the battery of each of the battery modules and is mechanically connected to at least one of the battery modules.

The technical advantages of the energy storage power supply according to the embodiment of the present utility model are the same as those of the battery module of the above embodiment, and will not be described here again.

Drawings

Fig. 1 is a schematic view of a case of a battery module according to an embodiment of the present utility model.

Fig. 2 is a sectional view of a case of a battery module according to an embodiment of the present utility model.

Fig. 3 is an enlarged view of a in fig. 2.

Fig. 4 is another cross-sectional view of a housing of a battery module according to an embodiment of the present utility model.

Fig. 5 is an enlarged view of B in fig. 4.

Fig. 6 is a schematic view of a bottom cover in a case of a battery module according to an embodiment of the present utility model.

Fig. 7 is a schematic view of a top cover in a case of a battery module according to an embodiment of the present utility model.

Fig. 8 is a sectional view of a top cover in a case of a battery module according to an embodiment of the present utility model.

Fig. 9 is an enlarged view of C in fig. 8.

Fig. 10 is a cross-sectional view of a third seal in a case of a battery module according to an embodiment of the present utility model.

Reference numerals:

1. a bottom cover; 11. a first chamber; 12. a peripheral wall; 13. a bottom wall; 14. a first threaded hole; 2. a top cover; 21. a first sealing part; 22. a first connection hole; 23. a countersunk hole; 3. a first seal; 31. a connection part; 32. a first elastic portion; 4. a first screw; 5. a second seal; 51. a support part; 52. a second elastic part; 53. avoidance holes; 6. a side case; 61. a second threaded hole; 7. a second screw; 8. a third seal; 81. an annular substrate; 82. a first annular raised strip; 83. and a second annular convex strip.

Detailed Description

Reference will now be made in detail to embodiments of the present utility model, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present utility model and should not be construed as limiting the utility model.

A case of a battery module according to an embodiment of the present utility model is described below with reference to fig. 1 to 10.

The case of the battery module according to an embodiment of the present utility model includes a bottom cover 1, a top cover 2, and a first seal member 3. The bottom cover 1 and the top cover 2 form a containing cavity for containing the battery of the power supply module, the bottom cover 1 is provided with a first groove chamber 11 forming at least part of the containing cavity, and the top cover 2 covers the first groove chamber 11 of the bottom cover 1. The first seal member 3 is provided between the bottom cover 1 and the top cover 2 and extends along a cover sealing seam between the bottom cover 1 and the top cover 2.

According to the shell of the battery module, the bottom cover 1 and the top cover 2 are connected to form the accommodating cavity for accommodating the battery of the battery module, at the moment, the first sealing member 3 is arranged at the joint between the bottom cover 1 and the top cover 2 to seal the joint, so that the accommodating cavity can be separated from the outside, the waterproof sealing performance of the accommodating cavity is ensured, and the use safety of the battery in the accommodating cavity is also improved.

The top cover 2 may have a second chamber which forms at least part of the housing chamber, and the second chamber and the first chamber 11 together form the housing chamber. Alternatively, the first chamber 11 may constitute a housing chamber, and the top cover 2 may be provided with no chamber, and may be used only to cover the upper end opening of the first chamber 11.

In some embodiments, as shown in fig. 4 and 6, the bottom cover 1 includes a peripheral wall 12 constituting a side surface of the first chamber 11 and a bottom wall 13 constituting a bottom surface of the first chamber 11, and the top cover 2 is connected to the peripheral wall 12 or the bottom wall 13 to close an upper end opening of the first chamber 11. The bottom cover 1 forms a first compartment 11, which may be integrally formed, for example, in the shape of a cube receiving space, whereby the compartment portion itself may be waterproof.

That is, the first groove chamber 11 is only provided with an opening at the upper end, the first groove chamber 11 can realize the preliminary positioning of the battery, and the battery is not easy to be interfered by the battery when the top cover 2 is connected with the bottom cover 1 after the battery is placed in the first groove chamber 11.

In some embodiments, as shown in fig. 5, 7-9, the top cover 2 includes a first sealing portion 21 fitted into the upper end opening of the first tank chamber 11, and at least part of the first seal 3 is sandwiched between the outer peripheral surface of the first sealing portion 21 and the inner peripheral surface of the peripheral wall 12.

At this time, the seam between the top cover 2 and the bottom cover 1 includes at least the gap between the outer peripheral surface of the first seal member 3 and the inner peripheral surface of the peripheral wall 12, and the first seal member 3 seals the gap, so that the accommodating chamber has good waterproof sealing performance.

In some embodiments, as shown in fig. 9, the first seal 3 includes a connection portion 31 and a first elastic portion 32. The connecting portion 31 is provided on the first sealing portion 21 in a bonding manner, at least a portion of the connecting portion 31 is located on the outer peripheral side of the first sealing portion 21, and at least a portion of the connecting portion 31 extends in the circumferential direction of the first sealing portion 21. The first elastic portion 32 is provided on at least part of the outer peripheral side of the connecting portion 31 and extends in the circumferential direction of the connecting portion 31, and the first elastic portion 32 is interposed between the outer peripheral surface of the first seal portion 21 and the inner peripheral surface of the peripheral wall 12. Wherein, there are one or more first elastic parts 32, when there are a plurality of first elastic parts 32, the plurality of first elastic parts 32 are arranged at intervals along the direction of covering the first groove chamber 11 by the top cover 2.

The connecting portion 31 fixes the first elastic portion 32 to the outer peripheral side of the first seal portion 21, and when the first seal portion 21 is fitted into the upper end opening of the first tank chamber 11, the first elastic portion 32 is sandwiched between the outer peripheral surface of the first seal portion 21 and the inner peripheral surface of the peripheral wall 12, thereby achieving effective blocking of the gap between the outer peripheral surface of the first seal portion 21 and the inner peripheral surface of the peripheral wall 12.

At this time, each first elastic portion 32 can realize a waterproof function, and when there are a plurality of first elastic portions 32, the gap can be realized to be waterproof in multiple layers, and the waterproof reliability is higher. Compared with a gasket, the sealing mode is not only difficult to shift the elastic part, but also high in reliability, and multistage waterproof can be realized.

In some embodiments, the connecting portion 31 and the first elastic portion 32 are integrally formed, so as to reduce the manufacturing cost of the first sealing member 3, and ensure the connection strength between the connecting portion 31 and the first elastic portion 32.

And/or at least part of the first resilient part 32 is interference fit in the seam between the connecting part 31 and the lateral peripheral wall 12 of the first tank compartment 11. That is, the first elastic portion 32 is closely adhered to the inner peripheral surface of the peripheral wall 12 by elastic deformation, and the connection tightness between the first elastic portion 32 and the peripheral wall 12 is effectively ensured.

And/or, the connecting portion 31 has a clamping groove for clamping the connecting portion 31 to the first sealing portion 21 of the top cover 2. The clamping groove can be an annular clamping groove with an opening at the upper end, and the lower end of the first sealing part 21 can be of a sleeve-shaped structure and clamped in the annular clamping groove, so that reliable connection between the connecting part 31 and the first sealing part 21 is realized.

And/or, as shown in fig. 2, 4 and 5, the first sealing portion 21 of the top cover 2 is a bead structure extending outward from the cover body of the top cover 2. That is, the first seal portion 21 forms the outer edge of the top cover 2, and the whole top cover 2 is fitted into the upper end opening of the first tank chamber 11.

And/or the first elastic portion 32 has a curved shape extending from the connecting portion 31 to the outside thereof, and the first elastic portion 32 is curved in the opposite direction of the top cover 2 covering the first tank chamber 11. That is, the first elastic portion 32 is inclined upward with respect to the connecting portion 31, whereby when the first elastic portion 32 is fitted in the upper end opening of the first tank chamber 11 with the first seal portion 21, the first elastic portion 32 is easily bent to be in close contact with the inner peripheral surface of the peripheral wall 12, and the contact area between the first elastic portion 32 and the inner peripheral surface of the peripheral wall 12 can be made larger, and the waterproof sealing property is higher.

In some embodiments, the first seal 3 comprises a first seal ring, and the outer circumferential surface of the first seal portion 21 or the inner circumferential surface of the peripheral wall 12 is provided with a first annular groove, into which the first seal ring fits.

The first annular groove realizes the limit of the first sealing ring in the direction of the first groove chamber 11 covered by the top cover 2, and the waterproof sealing performance of the joint is prevented from being influenced due to dislocation of the first sealing ring.

Specifically, a first annular groove may be provided at the outer peripheral surface of the first seal portion 21.

In some embodiments, the inner peripheral surface of the peripheral wall 12 is provided with a limit flange, the limit flange and the first sealing portion 21 are arranged in a direction in which the top cover 2 covers the first groove chamber 11, and the first sealing member 3 includes a second sealing ring interposed between an upper surface of the limit flange and a lower end surface of the first sealing portion 21.

Namely, the second sealing ring seals the gap between the first sealing part 21 and the limit flange, so that the accommodating cavity can be separated from the outside, and the waterproof sealing performance of the accommodating cavity is effectively ensured.

Specifically, the stopper flange is located directly below the first seal portion 21, the second seal ring is fitted first in the upper end opening of the first tank chamber 11 and abuts against the top surface of the stopper flange, and then the first seal portion 21 is fitted in the upper end opening of the first tank chamber 11 and presses the second seal ring.

In some embodiments, the top cover 2 comprises a second sealing portion arranged with the peripheral wall 12 in a direction in which the top cover 2 covers the first groove chamber 11, the upper end surface of the peripheral wall 12 or the lower end surface of the second sealing portion is provided with a second annular groove, and the first sealing member 3 comprises a third sealing ring, at least part of which is fitted in the second annular groove.

Namely, the second sealing part is positioned right above the peripheral wall 12, and after the top cover 2 is connected with the bottom cover 1, the third sealing ring is clamped between the bottom surface of the second sealing part and the top surface of the peripheral wall 12, so that the gap between the second sealing part and the peripheral wall 12 is closed, and the waterproof sealing performance of the accommodating cavity is ensured. Wherein, the arrangement of the second ring channel effectively avoids the dislocation of the third sealing ring to influence the effective closure of the gap between the second sealing part and the peripheral wall 12.

In some embodiments, the first seal 3 is made of any one of rubber, silicone, and sealant.

Namely, the first sealing element 3 can be a finished elastic sealing ring, can be formed after glue is applied and solidification, can realize sealing performance, and is simple and reliable in a water-proof mode of the accommodating cavity.

In some embodiments, as shown in fig. 4, 5 and 7, the top cover 2 is provided with a first connection hole 22, the first connection hole 22 is located inside the first seal member 3, and the peripheral wall 12 or the bottom wall 13 is provided with a first threaded hole 14. The case of the battery module further includes a first screw 4, and the first screw 4 passes through the first coupling hole 22 and is screw-engaged with the first screw hole 14 to couple the top cover 2 with the bottom cover 1.

The top cover 2 is screw-coupled to the bottom cover 1 by the first screw 4, thereby enabling convenient and reliable coupling between the top cover 2 and the bottom cover 1.

Specifically, as shown in fig. 4, 5 and 7, the bottom wall 13 of the bottom cover 1 is provided with a plurality of first connecting posts extending upward, the top surface of the first connecting posts is provided with a first threaded hole 14, the bottom surface of the top cover 2 is provided with a plurality of second connecting posts extending downward, and the first connecting holes 22 are provided in and penetrate through the second connecting posts. The first connecting columns and the second connecting columns are in one-to-one correspondence, when the lower end face of the second connecting column is abutted with the upper end face of the corresponding first connecting column, the top cover 2 is abutted with the bottom cover 1 in place, and the top cover 2 reliably seals the first groove chamber 11.

In some embodiments, as shown in fig. 4 and 5, the first screw 4 includes a first bolt, the upper surface of the top cover 2 is provided with a countersink 23 communicating with the first connection hole 22, the axial dimension of the countersink 23 is larger than the axial dimension of the head of the first bolt, and the head of the first bolt is fitted in the countersink 23 and abuts against the bottom surface of the countersink 23. Wherein, the casing of the battery module further includes a second sealing member 5, and the second sealing member 5 is fitted in the counter bore 23 and seals the counter bore 23.

The second sealing piece 5 seals the counter bore 23 to separate the first connecting hole 22 from the outside, thereby effectively avoiding the outside rainwater from entering the accommodating cavity from the gap between the first connecting hole 22 and the first bolt, and further ensuring the waterproof sealing performance of the accommodating cavity.

As shown in fig. 4, the countersink 23 includes a first countersink section for receiving the head of the first bolt and a second countersink section for receiving the second seal 5, the second countersink section being located at an end of the first countersink section remote from the first connecting hole 22, the second countersink section having a diameter larger than that of the first countersink section. After the second seal 5 is fitted in the second countersunk section, the upper edge of the second seal 5 is lower than the top surface of the top cover 2 or flush with the top surface of the top cover 2.

In some embodiments, the second sealing member 5 includes a support portion 51 and a second elastic portion 52 that are connected, the support portion 51 is columnar and extends in the axial direction of the counterbore 23, and the second elastic portion 52 extends in the circumferential direction of the support portion 51, and the second elastic portion 52 is sandwiched between the circumferential surface of the support portion 51 and the wall surface of the counterbore 23. Wherein, there are one or more second elastic parts 52, and when there are a plurality of second elastic parts 52, a plurality of second elastic parts 52 are arranged on the circumference side of the supporting part 51 and are arranged at intervals along the axial direction of the supporting part 51.

When the supporting part 51 is matched in the counter bore 23, an annular gap with stable structure is formed between the supporting part 51 and the inner peripheral wall 12 of the counter bore 23, and the second elastic part 52 can be stably clamped between the supporting part 51 and the inner peripheral wall 12 of the counter bore 23, so that effective blocking of the annular gap is realized, and waterproof sealing performance of the accommodating cavity is effectively ensured.

At this time, each of the second elastic portions 52 can realize a waterproof function, and when there are a plurality of second elastic portions 52, it is possible to realize a multilayer waterproof for the above-mentioned annular slit, and the waterproof reliability is higher.

In some embodiments, the lower end surface of the support portion 51 is provided with a relief hole 53, and the relief hole 53 extends along the axial direction of the support portion 51 and is a blind hole. After the second sealing element 5 is pressed into the counter bore 23, the avoidance bore 53 is pressed and contracted, so that the second elastic part 52 and the wall surface of the counter bore 23 can be uniformly stressed, and the waterproof reliability is higher.

And/or the support portion 51 and the second elastic portion 52 are integrally formed, and at least part of the second elastic portion 52 is interference-fitted in the joint between the support portion 51 and the inner peripheral wall 12 of the counterbore 23. Namely, the second elastic portion 52 and the support portion 51 are elastically deformed to be closely attached to the inner peripheral wall 12 of the counterbore 23, so that the joint between the support portion 51 and the inner peripheral wall 12 of the counterbore 23 is effectively sealed.

And/or the second elastic portion 52 has a curved shape extending from the support portion 51 to the outside thereof, and the second elastic portion 52 is curved in the opposite direction of the second seal 5 closing the counterbore 23. That is, the second elastic portion 52 is inclined upward with respect to the supporting portion 51, whereby when the second elastic portion 52 is fitted in the counterbore 23 with the supporting portion 51, the second elastic portion 52 is easily bent to closely fit the inner peripheral wall 12 of the counterbore 23, and the contact area between the second elastic portion 52 and the inner peripheral wall 12 of the counterbore 23 can be made larger, and the waterproof sealing property is higher.

In some embodiments, as shown in fig. 1 and 2, the housing of the battery module further includes a side case 6, and the side case 6 is disposed on at least one outer side of the peripheral wall 12.

The side case 6 can effectively enhance the structural strength of the case of the battery module, and prevent the bottom cover 1 or the top cover 2 from being deformed and damaged due to excessive local stress. The bottom cover 1 and the top cover 2 may be made of an insulating material having a somewhat lower strength such as plastic, thereby ensuring insulating contact with the battery while reducing the total weight and cost of the case of the battery module.

Specifically, as shown in fig. 1 and 2, the side cases 6 are provided at two opposite outer side surfaces of the peripheral wall 12, respectively, and the case of the battery module can enable transportation of the battery module and connection with other modules such as the battery module or the inverter assembly through the two side cases 6.

In some embodiments, the peripheral wall 12 is provided with a second connection hole, and the side of the side shell 6 facing the peripheral wall 12 is provided with a second threaded hole 61. The housing of the battery module further includes a second screw 7, and the second screw 7 passes through the second connection hole and is screw-engaged with the second screw hole 61.

The side shell 6 is connected to the peripheral wall 12 by means of the second screw 7, so that the connection between the side shell 6 and the peripheral wall 12 is easy and reliable. Furthermore, the head of the second screw 7 is not exposed to the outer surface of the side case 6, thereby effectively improving the external beauty of the case of the battery module.

In particular, the second screw hole 61 may be provided as a blind hole, whereby the second screw hole 61 is also not exposed to the outer surface of the side case 6, thereby further improving the external aesthetic appearance of the case of the battery module.

In some embodiments, as shown in fig. 3, the housing of the battery module further includes a third seal 8, the second screw 7 includes a second bolt, the third seal 8 is sleeved on the stud of the second bolt, and the third seal 8 is sandwiched between the peripheral wall 12 and the head of the second bolt.

At this time, the third sealing member 8 seals the gap between the stud of the second bolt and the second connecting hole, so that external rainwater is prevented from entering the accommodating cavity through the gap, and the waterproof sealing performance of the accommodating cavity is further ensured.

In some embodiments, the third seal 8 comprises an elastomeric gasket. Namely, after the elastic gasket is sleeved on the stud of the second bolt, the elastic gasket is clamped between the peripheral wall 12 and the head of the second bolt through elastic deformation, and the elastic gasket is tightly attached to the inner peripheral surface of the peripheral wall 12 and the head of the second thread, so that the effective blocking of the gap between the stud of the second bolt and the second connecting hole is realized.

Alternatively, as shown in fig. 10, the third seal 8 includes an annular base plate 81 and first and second annular ribs 82 and 83 on both sides of the annular base plate 81, respectively, and the first and second annular ribs 82 and 83 are each connected to the peripheral wall 12 and the heads of the second bolts by ultrasonic waves in a sealing manner. That is, the first annular ridge 82 and the second annular ridge 83 are melted by vibration heating and are respectively attached to the peripheral wall 12 and the heads of the second bolts and then are solidified, so that the third sealing member 8, the peripheral wall 12 and the second bolts are formed integrally, and the reliability of plugging the gap between the stud of the second bolt and the second connecting hole is higher.

According to an embodiment of the present utility model, a sealing member for sealing a seam between a first pair of hand pieces and a second pair of hand pieces that are mutually matched includes a connecting portion 31 and an elastic portion, the connecting portion 31 is used for being attached to the first pair of hand pieces, and the connecting portion 31 is a ring-shaped structure capable of extending along the first pair of hand pieces. The elastic part is connected with the connecting part 31, protrudes out of the outer peripheral surface or the inner peripheral surface of the connecting part 31, extends along the length direction of the connecting part 31, and is used for being clamped between the connecting part 31 and the second pair of workpieces, wherein one or more elastic parts are arranged, and when the number of the elastic parts is multiple, the elastic parts are arranged at intervals along the vertical direction of the extending direction of the connecting part 31.

According to the sealing piece provided by the embodiment of the utility model, the sealing piece is connected with the first opponent piece through the connecting part and is in fit contact with the first opponent piece, and after the first opponent piece is connected with the second opponent piece, the elastic part of the sealing piece is clamped between the connecting part and the second opponent piece, so that the effective sealing of the joint between the first opponent piece and the second opponent piece is realized, and the waterproof effect of the connecting part of the first opponent piece and the second opponent piece is good.

In some embodiments, the connecting portion and the elastic portion are integrally formed, so that manufacturing cost of the sealing element is reduced, and connection strength between the connecting portion and the elastic portion is ensured.

And/or at least a portion of the elastic portion can be interference fit within a seam between the first and second pair of hand pieces. The elastic part is clamped in the joint between the first opponent piece and the second opponent piece through elastic deformation of the elastic part, the elastic part is in closer contact with the first opponent piece and the second opponent piece, the contact area is larger, and the plugging reliability of the joint is higher.

And/or the elastic part is in a curved surface shape extending from the connecting part to the outer side of the connecting part, and the elastic part is bent towards the direction opposite to the matching direction of the first pair of pieces and the second pair of pieces. The elastic part is inclined towards the opposite direction of the matching direction of the first opponent piece and the second opponent piece relative to the connecting part, so that when the elastic part is matched and connected with the first opponent piece and the second opponent piece, the elastic part is easy to bend so as to be in close contact with the second opponent piece, the contact area between the elastic part and the second opponent piece is larger, and the waterproof sealing performance is higher.

In some embodiments, as shown in fig. 9, an annular groove is provided on the connection for an at least partial interference fit with the first pair of hand pieces. Or, the first pair of hand pieces are provided with clamping grooves, and the connecting part is provided with a limit flange for being in plug-in fit with the clamping grooves. The connecting part can be connected with the first pair of hand pieces in the interference fit or clamping direction, so that the connecting part is guaranteed to be in fit contact with the first pair of hand pieces, and meanwhile, the reliable installation of the connecting part on the first pair of hand pieces is also effectively guaranteed.

The battery module according to the embodiment of the utility model includes the case of the battery module of any of the embodiments described above or the case sealed with the seal of any of the embodiments described above, and the battery provided in the case.

An energy storage power supply according to an embodiment of the present utility model includes an inverter assembly and at least one battery module as in the above-described embodiment; the inverter assembly is electrically connected to the battery of each battery module and mechanically connected to at least one battery module.

Specifically, there may be two battery modules, the two battery modules being mechanically and electrically connected, and the inverter assembly being mechanically and electrically connected to one of the battery modules.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

For purposes of this disclosure, the terms "one embodiment," "some embodiments," "example," "a particular example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While the above embodiments have been shown and described, it should be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations of the above embodiments may be made by those of ordinary skill in the art without departing from the scope of the utility model.

Claims

1. A housing of a battery module, comprising:

a bottom cover and a top cover, wherein a containing cavity for containing a battery of a power supply module is formed between the bottom cover and the top cover, the bottom cover is provided with a first groove chamber forming at least part of the containing cavity, and the top cover covers the first groove chamber of the bottom cover; and

the first sealing piece is arranged between the bottom cover and the top cover and extends along a cover sealing seam between the bottom cover and the top cover.

2. The case of a battery module according to claim 1, wherein the bottom cover includes a peripheral wall constituting a side surface of the first chamber and a bottom wall constituting a bottom surface of the first chamber, and the top cover is connected to the peripheral wall or the bottom wall to close an upper end opening of the first chamber.

3. The case of the battery module according to claim 2, wherein the top cover includes a first seal portion fitted in an upper end opening of the first groove chamber, at least a portion of the first seal being interposed between an outer peripheral surface of the first seal portion and an inner peripheral surface of the peripheral wall.

4. The housing of a battery module of claim 3, wherein the first seal comprises:

the connecting part is arranged on the first sealing part in a bonding mode, at least part of the connecting part is positioned on the outer periphery side of the first sealing part, and at least part of the connecting part extends along the circumferential direction of the first sealing part; and

the first elastic part is arranged on the outer peripheral side of at least part of the connecting part and extends along the circumferential direction of the connecting part, and is clamped between the outer peripheral surface of the first sealing part and the inner peripheral surface of the peripheral wall, wherein one or more first elastic parts are arranged, and when the plurality of first elastic parts are arranged, the plurality of first elastic parts are arranged at intervals along the direction of covering the first groove chamber by the top cover.

5. The housing of a battery module according to claim 4, wherein,

the connecting part and the first elastic part are integrally formed;

6. The case of the battery module according to claim 3, wherein the first seal member includes a first seal ring, an outer peripheral surface of the first seal portion or an inner peripheral surface of the peripheral wall is provided with a first annular groove, and the first seal ring is fitted in the first annular groove.

7. The case of the battery module according to claim 3, wherein an inner peripheral surface of the peripheral wall is provided with a stopper flange, the stopper flange and the first sealing portion are arranged in a direction in which the top cover covers the first groove chamber, the first sealing member includes a second sealing ring interposed between an upper surface of the stopper flange and a lower end surface of the first sealing portion.

8. The case of a battery module according to claim 2, wherein the top cover includes a second sealing portion arranged with the peripheral wall in a direction in which the top cover covers the first groove chamber, an upper end surface of the peripheral wall or a lower end surface of the second sealing portion is provided with a second annular groove, and the first sealing member includes a third sealing ring at least a portion of which is fitted in the second annular groove.

9. The case of a battery module according to any one of claims 2 to 8, wherein the first seal member is made of any one of rubber, silicone rubber, and sealant.

10. The housing of the battery module according to claim 2, wherein the top cover is provided with a first coupling hole located inside the first sealing member, the peripheral wall or the bottom wall is provided with a first screw hole, and the housing of the battery module further comprises a first screw member penetrating the first coupling hole and screw-engaging with the first screw hole to couple the top cover to the bottom cover.

11. The housing of the battery module according to claim 10, wherein the first screw member comprises a first bolt, an upper surface of the top cover is provided with a countersink communicating with the first connection hole, an axial dimension of the countersink is larger than an axial dimension of a head of the first bolt, the head of the first bolt is fitted in the countersink and abuts against a bottom surface of the countersink, wherein,

12. The case of a battery module according to claim 11, wherein the second seal member includes a support portion and a second elastic portion connected to each other, the support portion being columnar and extending in an axial direction of the counterbore, the second elastic portion extending in a circumferential direction of the support portion, the second elastic portion being interposed between a peripheral surface of the support portion and a wall surface of the counterbore, wherein one or more of the second elastic portions, when there are a plurality of the second elastic portions, are provided on a peripheral side of the support portion and are arranged at intervals in the axial direction of the support portion.

13. The housing of the battery module according to claim 12, wherein a lower end surface of the support portion is provided with a relief hole that extends in an axial direction of the support portion and is a blind hole;

14. The housing of a battery module of claim 2, further comprising a side shell disposed on at least one exterior side of the peripheral wall.

15. The housing of a battery module according to claim 14, wherein a second connection hole is provided in the peripheral wall, a second screw hole is provided in a side of the side case facing the peripheral wall, and the housing of a battery module further comprises a second screw member penetrating the second connection hole and screw-engaged with the second screw hole.

16. The housing of a battery module of claim 15, further comprising a third seal, wherein the second threaded member comprises a second bolt, wherein the third seal is received over a stud of the second bolt, and wherein the third seal is sandwiched between the peripheral wall and a head of the second bolt.

17. The housing of the battery module of claim 16, wherein the third seal comprises an elastomeric gasket;

18. A seal for sealing a seam between first and second mating pairs of parts, comprising:

the connecting part is used for being attached to the first pair of hand pieces and is of an annular structure which can be arranged along the first pair of hand pieces in an extending mode; and

the elastic part is connected with the connecting part, the elastic part protrudes out of the outer peripheral surface or the inner peripheral surface of the connecting part, the elastic part is arranged in an extending mode along the length direction of the connecting part, the elastic part is used for being clamped between the connecting part and the second pair of workpieces, one or more elastic parts are arranged, and when the elastic parts are arranged in a plurality of elastic parts, the elastic parts are arranged at intervals along the vertical direction of the extending direction of the connecting part.

19. The seal of claim 18, wherein the connecting portion and the resilient portion are integrally formed;

20. The seal of claim 18, wherein the connection portion is provided with an annular groove for an at least partial interference fit with the first pair of hand pieces;

21. A battery module comprising the case of the battery module according to any one of claims 1 to 17 or the case sealed with the seal according to claims 18 to 20, and a battery provided in the case.

22. An energy storage power supply comprising an inverter assembly and at least one battery module of claim 21; the inverter assembly is electrically connected to the battery of each of the battery modules and is mechanically connected to at least one of the battery modules.