CN220628068U

CN220628068U - Battery module end plate, battery module and vehicle

Info

Publication number: CN220628068U
Application number: CN202322318766.1U
Authority: CN
Inventors: 罗锟; 陈智伟; 陈朝海; 丁权华
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-08-28
Filing date: 2023-08-28
Publication date: 2024-03-19
Anticipated expiration: 2033-08-28

Abstract

The utility model provides a battery module end plate, a battery module and a vehicle, wherein the end plate comprises: the plate body comprises a hollow structure arranged on the plate body, wherein the hollow structure is provided with a plurality of first reinforcing grooves and at least one connecting hole, and the connecting hole is used for installing an outer bracket for installing a power supply module; wherein, the plate body is integrated into one piece structure, and two at least first enhancement grooves are set up along the first direction interval of plate body, and the connecting hole is located between two first enhancement grooves and passes through the plate body along the second direction of plate body. Through set up hollow out construction at the plate body to set up first enhancement groove on hollow out construction, under the circumstances that does not reduce the anti battery module expansion force of plate body, realize the lightweight design of battery module end plate. Meanwhile, the connecting holes arranged on the hollow structure are utilized for installing the outer support for installing the power supply module, so that the matching degree with other structures is improved, and the expansion resistance of the battery module is not affected.

Description

Battery module end plate, battery module and vehicle

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module end plate, a battery module and a vehicle.

Background

The end plate of the battery module is usually extruded and molded, and the obtained end plate is provided with a plurality of hollow cavities, and a plurality of non-communicated grooves are formed when the cross section of the end plate is seen. Because the end plate needs to provide the battery module with enough anti-expansion force, in addition, needs to be kept at a higher energy density to achieve the purpose of module weight reduction, the holes at reasonable positions are difficult to be opened on the end plate, so that the top plate, the bottom plate or the side plate of the battery module of different types can be installed, and the degree of matching with other structures on the battery module is lower.

Disclosure of Invention

The embodiment of the utility model provides a battery module end plate, a battery module and a vehicle, which can solve the technical problem that the existing end plate is difficult to be matched with other structures of the battery module.

In a first aspect, an embodiment of the present utility model provides a battery module end plate, including:

the plate body comprises a hollow structure arranged on the plate body, wherein the hollow structure is provided with a plurality of first reinforcing grooves and at least one connecting hole, and the connecting hole is used for installing an outer bracket for installing a power supply module;

the plate body is of an integrated structure, at least two first reinforcing grooves are arranged at intervals along the first direction of the plate body, and the connecting holes are positioned between the two first reinforcing grooves and penetrate through the plate body along the second direction of the plate body.

In an embodiment, the hollow structure comprises a first hollow structure, the first hollow structure comprises a partition plate and a plurality of mounting plates connected with the partition plate in a bending mode, the partition plate and the mounting plates enclose a plurality of first reinforcing grooves, and the connecting holes are located at the connecting positions of the mounting plates and the partition plate.

In an embodiment, the hollow structure further comprises a plurality of second hollow structures, the second hollow structures are connected to the partition board, at least two second hollow structures are arranged at intervals along the first direction of the board body, two second hollow structures enclose an installation cavity, and the installation cavity is communicated with the corresponding connection hole.

In an embodiment, at least one second hollow structure is equipped with the second and strengthens the groove, the second hollow structure including buckle connect in the baffle and towards keeping away from the reinforcing plate that the direction of mounting panel extends, the reinforcing plate with the baffle encloses into the second strengthens the groove, the reinforcing plate is close to the width of the one end of mounting panel is greater than the width of the one end that the reinforcing plate kept away from the mounting panel.

In an embodiment, the second hollow structure further includes a plurality of power-assisted plates, and at least one power-assisted plate is disposed in the corresponding second reinforcing groove.

In an embodiment, the hollow structure further includes two opposite first plates, at least one of the first plates is provided with a mounting hole for mounting a side plate of the battery module, and the mounting hole is communicated with the corresponding first reinforcing groove.

In an embodiment, a mounting groove close to the hollow structure is formed in one side of the plate body, so that an external bracket for mounting the power supply module is embedded.

In an embodiment, the surface of the plate body deviating from the hollow structure is used for bonding foam, the surface of the plate body deviating from the hollow structure is provided with a first glue overflow groove, and the first glue overflow groove is used for accommodating glue overflow of bonding foam.

In an embodiment, a protruding baffle is arranged on the surface of the plate body, which faces away from the hollow structure; the baffle is located the border of one side of plate body, the baffle is used for restricting the foam and removes, just the baffle is kept away from the tip of plate body is equipped with the second and overflows the gluey groove, first overflow is glued the groove and is located the border of the opposite side of plate body, plate body and baffle integrated into one piece.

In an embodiment, the surface of the board body, which is away from the hollow structure, is provided with two insulation grooves which are arranged oppositely, the two insulation grooves are respectively positioned at two ends of the board body, and the insulation grooves are used for embedding the folded edges of the insulation sheets coated on the foam.

In a second aspect, an embodiment of the present utility model provides a battery module, including a battery module end plate as described above, where two battery module end plates are disposed opposite to each other;

the top plate and the bottom plate are oppositely arranged and welded between the two battery module end plates;

the side plates are oppositely arranged and are positioned between the end plates of the battery modules, and each side plate is connected with the two end plates of the battery modules. In a third aspect, an embodiment of the present utility model provides a vehicle including a battery module as described above.

The embodiment of the utility model has the beneficial effects that:

in the embodiment of the utility model, the hollow structure is arranged on the plate body, and the first reinforcing groove hollow structure is arranged on the hollow structure, so that the lightweight design of the battery module end plate is realized under the condition that the expansion force of the plate body for resisting the battery module is not reduced. Meanwhile, the connecting holes arranged on the hollow structure are utilized for installing the outer support for installing the power supply module, so that the matching degree with other structures is improved, and the expansion resistance of the battery module is not affected.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic view showing the overall structure of an end plate of a battery module according to an embodiment of the present utility model;

fig. 2 is a rear view of a battery module end plate provided by an embodiment of the present utility model.

Fig. 3 is a side view of a battery module end plate provided by an embodiment of the present utility model.

Fig. 4 is a front view of a battery module end plate provided by an embodiment of the present utility model.

Fig. 5 is a bottom view of a battery module end plate provided by an embodiment of the present utility model.

Fig. 6 is a top view of a battery module end plate according to an embodiment of the present utility model

Reference numerals:

1. a plate body; 11. a first portion; 12. a second portion; 121. a mounting groove; 1211. a third reinforcing groove; 13. a first glue overflow groove; 14. a second glue overflow groove; 15. a baffle; 16. an insulation groove; 2. a first plate; 21. a mounting hole; 3. a second plate; 4. a hollow structure; 41. a first hollow structure; 411. a partition plate; 412. a mounting plate; 42. a second hollow structure; 421. a reinforcing plate; 422. a booster plate; 43. a connection hole; 5. a first reinforcing groove; 6. a second reinforcing groove; 7. a mounting cavity; 8. and positioning holes.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to fall within the scope of the utility model. Furthermore, it should be understood that the detailed description is presented herein for purposes of illustration and description only, and is not intended to limit the utility model. In the present utility model, unless otherwise indicated, terms of orientation such as "upper" and "lower" are used to generally refer to the upper and lower positions of the device in actual use or operation, and specifically the orientation of the drawing figures; while "inner" and "outer" are for the outline of the device.

Example 1

Referring to fig. 1, a battery module end plate provided in an embodiment of the present application includes:

the plate body 1 comprises a hollow structure 4 arranged on the plate body 1, wherein the hollow structure 4 is provided with a plurality of first reinforcing grooves 5 and at least one connecting hole 43, and the connecting hole 43 is used for installing an outer bracket for installing a power supply module;

wherein, the plate body 1 is an integrally formed structure, at least two first reinforcing grooves 5 are arranged at intervals along the first direction of the plate body 1, and the connecting hole 43 is located between the two first reinforcing grooves 5 and penetrates through the plate body 1 along the second direction of the plate body 1. In the present embodiment, the first direction of the board 1 is the longitudinal direction of the board 1, and the second direction of the board 1 is the width direction of the board 1.

Through the first reinforcement groove 5, the lightweight design of the battery module end plate is realized under the condition that the expansion force of the battery module resistance of the plate body 1 is not reduced. Meanwhile, the connection holes 43 arranged on the hollow structure 4 are utilized for installing the outer support for installing the power supply module, so that the matching degree with other structures is improved, and the expansion resistance of the battery module is not affected. In this embodiment, a common end plate is usually extruded by an aluminum extrusion process, and after extrusion molding, grooves or holes are formed by machining, so that the end plate is matched with other structures, and meanwhile, a traceability code containing processing information is added on the end plate by a machining mode. However, in the present application, the plate body 1 is molded by a mold by adopting an aluminum casting process, and inserts of the mold are replaced in the casting process to form different traceability codes, and the connecting holes 43 are formed simultaneously in the casting process, so that no additional machining holes are needed, and the processing steps are reduced.

Example 2

Referring to fig. 1, a battery module end plate provided in an embodiment of the present application includes a plate body 1. The plate body 1 comprises a hollow structure 4 arranged on the plate body 1. The hollow structure 4 comprises a first hollow structure 41, a second hollow structure 42, two first plates 2 and two second plates 3.

The plate body 1 comprises a first portion 11 and a second portion 12. The two first plates 2 and the two second plates 3 are perpendicular to the plate body 1, the two first plates 2 are oppositely arranged along the first direction of the plate body 1 and are connected to the two ends of the first part 11, the two second plates 3 are oppositely arranged along the second direction of the plate body 1 and are connected to the two sides of the first part 11, and the two second plates 3 are located between the two first plates 2. The first direction of the plate body 1 is the length direction of the plate body 1, and the second direction of the plate body 1 is the width direction of the plate body 1. The second portion 12 is parallel to the first portion 11 and is connected to one side of the first portion 11. The first hollow structure 41 and the second hollow structure 42 are both located on the first portion 11. The first hollow structure 41 is provided with a plurality of first reinforcing grooves 5, and the second hollow structure 42 is provided with a plurality of second reinforcing grooves 6. The second part 12 is provided with mounting grooves 121, the mounting grooves 121 being directed towards the second plate 3 close to the second part 12, the mounting grooves 121 being intended for the embedding of the outer brackets of the power module installation. The bottom of the mounting groove 121 is provided with a plurality of third reinforcement grooves 1211 provided along the first direction of the plate body 1, and the plurality of third reinforcement grooves 1211 further achieve the end plate weight reduction.

The first hollow structure 41 includes a partition 411 and a plurality of mounting plates 412. The partition 411 is disposed opposite one of the second plates 3, and the partition 411 is disposed between the two first plates 2 and divides the first portion 11 into a first mounting area and a second mounting area, and the first mounting area is disposed on one side of the second mounting area adjacent to the second portion 12. The plurality of mounting plates 412 are connected to the partition 411 in a bent manner, and the plurality of mounting plates 412, the partition 411, and the second plate 3 near the second portion 12 enclose a plurality of first reinforcing grooves 5. Through the first reinforcement groove 5, the lightweight design of the battery module end plate is realized without sacrificing the expansion force of the battery module.

The surface of at least one mounting plate 412, which is connected to the partition 411, is provided with a connection hole 43, the connection hole 43 penetrating through the second plate 3 near the second portion 12, the connection hole 43 being used for an external bracket mounting of the power module mounting. The two first plates 2 are provided with mounting holes 21, the mounting holes 21 are used for mounting side plates of the battery module, and the mounting holes 21 are communicated with the corresponding first reinforcing grooves 5. The plate body 1 is of an integrated structure.

The second hollow structure 42 is provided with a plurality of second mounting areas. The second hollow structure 42 includes a plurality of reinforcing plates 421 and a plurality of power-assisted plates 422, the plurality of reinforcing plates 421 are connected between the second plate 3 and the partition 411, and the plurality of reinforcing plates 421, the partition 411 and the second plate 3 close to the second installation area enclose a second reinforcing groove 6. At least two second hollow structures 42 are arranged at intervals along the first direction of the plate body 1, wherein the two second hollow structures 42 enclose a mounting cavity 7, and the mounting cavity 7 is communicated with a corresponding connecting hole 43. When the connecting hole 43 is used for installing an outer bracket for installing a power supply module, the used bolt can extend into the connecting hole 43 through the installing cavity 7, so that the installing convenience is improved.

The width of the end of the reinforcing plate 421 close to the mounting plate 412 is smaller than the width of the end of the reinforcing plate 421 far away from the mounting plate 412, namely, the reinforcing plate 421 adopts a trapezoid structure, so that the purpose of light weight of the end plate is realized. The plurality of booster plates 422 are disposed in the second reinforcing groove 6, and function to further improve the expansion resistance of the plate body 1.

Referring to fig. 2, the surface of the first portion 11 facing away from the hollow structure 4 is used for bonding foam, the surface of the first portion 11 facing away from the hollow structure 4 is provided with a first glue overflow groove 13, the first glue overflow groove 13 is close to the edge of one side of the plate body 1, namely, the edge of the first portion 11 facing away from the second portion 12 is located, and the first glue overflow groove 13 is used for accommodating glue overflowed for bonding foam.

The side of the second part 12 facing away from the hollow structure 4 is provided with a baffle 15 protruding from the surface of the second part 12; the baffle 15 is arranged at the edge of the other side of the plate body 1, namely the edge of the second part 12 far away from the first part 11, the baffle 15 is used for limiting the movement of foam, and the end part of the baffle 15 far away from the second part 12 is provided with a second glue overflow groove 14. In the actual use process of the end plate, the second glue overflow groove 14 is usually located below the first glue overflow groove 13, and the second glue overflow groove 14 can collect part of glue solution flowing out from foam under the action of gravity.

Referring to fig. 1, 2 and 3, two insulation grooves 16 are arranged on the surface of the board body 1 facing away from the hollow structure 4, the two insulation grooves 16 are respectively positioned at two ends of the board body 1, and the insulation grooves 16 are used for embedding the folded edges of the insulation sheets coated on the foam. During actual assembly, after the insulating sheet is adhered to foam, the end plate and other battery modules are assembled together without being solidified by colloid, and at the moment, the insulating sheet is easy to slide and shift to influence the insulating effect, and the limit effect on the insulating sheet is achieved by placing the folded edges of the insulating sheet into the insulating groove 16.

Referring to fig. 5 and 6, the second plate 3 remote from the second portion 12 is used for welding the top plate of the battery module, the second plate 3 and the baffle 15 are provided with positioning holes 8 therethrough, and the end of the baffle 15 facing away from the second plate 3 is used for welding the bottom plate of the battery module. The positioning holes 8 are used for limiting the positions between the end plate and the top plate when the end plate and the bottom plate are welded and for improving the welding precision.

Referring to fig. 4, 5 and 6, in this embodiment, a common end plate is usually formed by an aluminum extrusion process, and after extrusion molding, grooves or holes are formed by machining, so as to achieve cooperation with other structures, and a traceability code containing processing information is added to the end plate by machining. However, this application, plate body 1 and baffle 15 integrated into one piece, the end plate adopts cast aluminium technology to pass through the mould shaping to form plate body 1 and baffle 15, and through the inserts of change mould in the casting process, in order to form different retrospective codes, form first enhancement groove 5, second enhancement groove 6, connecting hole 43, mounting hole 21, installation cavity 7 and locating hole 8 simultaneously in the casting process, need not extra machining trompil, reduce the processing step.

The embodiment of the application also provides a battery module, which comprises two battery module end plates, a top plate, a bottom plate and side plates, wherein the top plate and the bottom plate are oppositely arranged, and the side plates are oppositely arranged. The top plate and the bottom plate are positioned between the two battery module end plates and welded to the baffle plates 15 of the two battery module end plates and the second plate 3 close to the second installation area respectively; the side plates are connected between the two battery module end plates, and the side plates are riveted in the mounting holes 21. After the battery module is installed, the thickness of foam adhered to the plate body 1 is compressed from 3mm to 2mm, so that the buffer effect on the battery cells in the battery module is achieved.

The embodiment of the application also provides a vehicle, which comprises a vehicle body and the battery module.

The foregoing has outlined rather broadly the more detailed description of embodiments of the utility model, wherein the principles and embodiments of the utility model are explained in detail using specific examples, the above examples being provided solely to facilitate the understanding of the method and core concepts of the utility model; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the ideas of the present utility model, the present description should not be construed as limiting the present utility model in summary.

Claims

1. A battery module end plate, comprising:

the plate body (1) comprises a hollow structure (4) arranged on the plate body (1), wherein the hollow structure (4) is provided with a plurality of first reinforcing grooves (5) and at least one connecting hole (43), and the connecting hole (43) is used for installing an outer bracket for installing a power supply battery module;

the plate body (1) is of an integrated structure, at least two first reinforcing grooves (5) are arranged at intervals along the first direction of the plate body (1), and the connecting holes (43) are positioned between the two first reinforcing grooves (5) and penetrate through the plate body (1) along the second direction of the plate body (1).

2. The battery module end plate according to claim 1, wherein the hollow structure (4) comprises a first hollow structure (41), the first hollow structure (41) comprises a partition plate (411) and a plurality of mounting plates (412) connected with the partition plate (411) in a bending manner, the partition plate (411) and the mounting plates (412) enclose a plurality of first reinforcing grooves (5), and the connecting holes (43) are positioned at the connecting positions of the mounting plates (412) and the partition plate (411).

3. The battery module end plate according to claim 2, wherein the hollow structure (4) further comprises a plurality of second hollow structures (42), the second hollow structures (42) are connected to the partition plate (411), at least two second hollow structures (42) are arranged at intervals along the first direction of the plate body (1), two second hollow structures (42) enclose a mounting cavity (7), and the mounting cavity (7) is communicated with the corresponding connecting hole (43).

4. A battery module end plate according to claim 3, wherein at least one second hollow structure (42) is provided with a second reinforcing groove (6), the second hollow structure (42) comprises a reinforcing plate (421) which is connected with the partition plate (411) in a bending manner and extends towards a direction away from the mounting plate (412), the reinforcing plate (421) and the partition plate (411) enclose the second reinforcing groove (6), and the width of one end of the reinforcing plate (421) close to the mounting plate (412) is larger than the width of one end of the reinforcing plate (421) away from the mounting plate (412).

5. The battery module end plate according to claim 4, wherein the second hollow structure (42) further comprises a plurality of power assisting plates (422), and at least one power assisting plate (422) is disposed in the corresponding second reinforcing groove (6).

6. The battery module end plate according to claim 1, wherein the hollow structure (4) further comprises two opposite first plates (2), at least one first plate (2) is provided with a mounting hole (21) for mounting a side plate of the battery module, and the mounting hole (21) is communicated with the corresponding first reinforcing groove (5).

7. The battery module end plate according to claim 1, wherein a mounting groove (121) close to the hollowed-out structure (4) is formed in one side of the plate body (1) so as to be embedded into an outer bracket for mounting a battery module.

8. The battery module end plate according to claim 1, wherein the surface of the plate body (1) deviating from the hollow structure (4) is used for bonding foam, a first glue overflow groove (13) is formed in the surface of the plate body (1) deviating from the hollow structure (4), and the first glue overflow groove (13) is used for containing glue overflowed from the foam.

9. The battery module end plate according to claim 8, characterized in that the surface of the plate body (1) facing away from the hollowed-out structure (4) is provided with a protruding baffle (15); the baffle (15) is arranged at the edge of one side of the plate body (1), the baffle (15) is used for limiting foam movement, the end part of the baffle (15) away from the plate body (1) is provided with a second glue overflow groove (14), the first glue overflow groove (13) is arranged at the edge of the other side of the plate body (1), and the plate body (1) and the baffle (15) are integrally formed.

10. The battery module end plate according to claim 8, wherein two opposite insulation grooves (16) are formed in the surface, facing away from the hollow structure (4), of the plate body (1), the two insulation grooves (16) are respectively located at two ends of the plate body (1), and the insulation grooves (16) are used for embedding the folded edges of the insulation sheets coated on the foam.

11. A battery module, characterized in that; comprising the battery module end plate according to any one of claims 1 to 10, the battery module end plates being provided in opposition with two;

the side plates are oppositely arranged and are positioned between the end plates of the battery modules, and each side plate is connected with the two end plates of the battery modules.

12. A vehicle comprising the battery module according to claim 11.