CN220439784U

CN220439784U - Battery pack box, battery pack and electric automobile

Info

Publication number: CN220439784U
Application number: CN202322099110.5U
Authority: CN
Inventors: 汤彦斌; 孔素翠; 黄鹏亮; 陈英旗; 曹楷; 曹辉
Original assignee: Shanghai Ruipu Energy Co Ltd
Current assignee: Shanghai Ruipu Energy Co Ltd
Priority date: 2023-08-04
Filing date: 2023-08-04
Publication date: 2024-02-02
Anticipated expiration: 2033-08-04

Abstract

The utility model belongs to the technical field of batteries, and discloses a battery pack box, a battery pack and an electric automobile. The battery pack box body comprises a frame, a first rivet nut, a liquid cooling plate and a first bolt piece. The frame encloses a mounting cavity capable of accommodating the battery, and is provided with a boss part protruding towards the mounting cavity; the first riveting nut penetrates through the boss part, the deformation section of the first riveting nut can be deformed in a riveting mode, the deformation section of the first riveting nut protrudes towards the circumferential direction to form a first outer protrusion which can be abutted against the boss part, a first limiting table is arranged in the circumferential direction of the first riveting nut, and the first limiting table is abutted against the boss part; the liquid cooling plate is arranged below the boss; the first bolt piece passes through the liquid cooling plate and is in threaded connection with the first riveting nut. The battery pack box body utilizes the first rivet nut and the first bolt piece to realize the disassembly connection of the liquid cooling plate and the frame, realizes the disassembly feasibility of the liquid cooling plate and the frame, does not generate scraps in the assembly process, and is convenient for the disassembly, the overhaul and the assembly of the liquid cooling plate.

Description

Battery pack box, battery pack and electric automobile

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery pack box, a battery pack and an electric automobile.

Background

Currently, existing battery packs are provided with a liquid cooling plate for cooling the batteries in the battery pack. The existing assembly mode adopts welding to directly fixedly connect the liquid cooling plate and the box body frame, and because the liquid cooling plate and the box body frame are welded and fixed, the liquid cooling plate cannot be disassembled, and violent forced disassembly can lead to bending damage of the liquid cooling plate, so that disassembly and overhaul of the liquid cooling plate and reuse after disassembly cannot be realized.

Disclosure of Invention

The utility model aims to provide a battery pack box body, a battery pack and an electric automobile, so as to solve the problem that an existing liquid cooling plate and a box body frame are not easy to detach.

To achieve the purpose, the utility model adopts the following technical scheme:

in a first aspect, there is provided a battery pack case comprising:

a frame surrounding a mounting cavity capable of accommodating a battery, the frame having a boss portion protruding toward the mounting cavity;

the first riveting nut is penetrated through the boss part, and the deformation section of the first riveting nut can be deformed by riveting and protrudes towards the circumferential direction to form a first convex part which can be abutted against the boss part; a first limiting table is arranged in the circumferential direction of the first riveting nut, and the first limiting table is abutted with the boss part;

the liquid cooling plate is arranged below the boss part;

the first bolt piece passes through the liquid cooling plate and is in threaded connection with the first riveting nut.

Optionally, the battery pack box further includes a gasket, the gasket is disposed on a side of the liquid cooling plate, which is away from the first limiting platform, and the first bolt member passes through the gasket and the liquid cooling plate and is connected with the first riveting nut.

Optionally, the battery pack box further includes a first sealing member, where the first sealing member is sleeved on the first limiting platform and is clamped between the boss portion and the liquid cooling plate.

Optionally, the battery pack box further comprises a bottom plate, wherein the bottom plate is connected with the frame and covers the liquid cooling plate.

Optionally, the battery pack box further includes at least one second rivet nut and a second bolt, a second limiting table is arranged in the circumferential direction of the second rivet nut, the second limiting table is abutted to the bottom of the frame, the second rivet nut is penetrated through the bottom of the frame, and the second rivet nut can be deformed by riveting and protrudes towards the circumferential direction to form a second protruding part which can be abutted to the frame; the second bolt piece passes through the bottom plate and is in threaded connection with the second riveting nut.

Optionally, the battery pack box further includes a second sealing member, and the second sealing member is sleeved on the second limiting platform and is clamped between the frame and the bottom plate.

Optionally, the battery pack box further comprises at least one screw member, the bottom plate is fixedly connected with the frame through the screw member, and a structural sealant layer is arranged between the bottom plate and the frame.

Optionally, the screw member is an FDS screw.

In a second aspect, a battery pack is provided, including a battery and the battery pack case described above, in which the battery is mounted.

In a third aspect, an electric vehicle is provided, including the battery pack described above.

The utility model has the beneficial effects that:

the battery pack box body utilizes the first rivet nut and the first bolt piece to realize the disassembly connection of the liquid cooling plate and the frame, realizes the disassembly feasibility of the liquid cooling plate and the frame, does not generate scraps in the assembly process, and is convenient for the disassembly, the overhaul and the assembly of the liquid cooling plate.

The battery pack comprises a battery and the battery pack box body, the battery is arranged in the installation cavity of the battery pack box body, the liquid cooling plate in the battery pack is detachably connected with the frame, the assembly is simple and convenient, the connection is reliable and stable, the liquid cooling plate is convenient to take down from the frame, and the follow-up disassembly and maintenance are convenient.

The electric automobile includes foretell battery package, and the liquid cooling board in this battery package can be followed and is taken down with complete dismantlement on the frame, convenient to detach overhauls.

Drawings

Fig. 1 is a schematic view showing a partial structure of a battery pack case according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of a portion of FIG. 1 at A;

fig. 3 is an exploded view illustrating an assembly of a battery pack case according to an embodiment of the present utility model;

FIG. 4 is an exploded view of the assembly of the base plate and the frame according to the first embodiment of the present utility model;

FIG. 5 is an enlarged partial schematic view at B in FIG. 4;

FIG. 6 is an assembled cross-sectional view of the second bolt member, second rivet nut, and base plate and frame of the first embodiment;

fig. 7 is an exploded view of a battery pack case according to a second embodiment of the present utility model;

FIG. 8 is an exploded view of the assembly of the base plate and the frame according to the second embodiment of the present utility model;

fig. 9 is a sectional view showing the assembly of the screw member with the base plate and the frame in the second embodiment of the present utility model.

In the figure:

1. a frame; 11. a boss portion; 2. a liquid cooling plate; 3. a first rivet nut; 31. a first limit table; 32. a deformation section; 4. a first bolt member; 5. a gasket; 6. a first seal; 7. a bottom plate; 8. a second rivet nut; 81. the second limiting table; 9. a second bolt member; 10. a second seal;

100. a mounting cavity; 101. a screw member; 102. and (3) a structural sealant layer.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. 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.

In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. 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 description of the present utility model, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are orientation or positional relationships based on those shown in the drawings, merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the utility model. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

Example 1

As shown in fig. 1 to 4, the present utility model provides a battery pack case including a frame 1, a first rivet nut 3, a liquid cooling plate 2, and a first bolt member 4. As shown in fig. 1 and 2, the frame 1 encloses a mounting cavity 100 capable of accommodating a battery. It is noted that the battery in the present application may be a single battery or a battery module composed of a plurality of single batteries. The frame 1 has a boss portion 11 protruding toward the mounting chamber 100 on the inner side. The first rivet nut 3 is arranged on the boss part 11 in a penetrating way, and the deformation section 32 of the first rivet nut 3 can be deformed in a riveting way and protrudes towards the circumferential direction to form a first convex which can be abutted against the boss part 11; the first rivet nut 3 is a rivet nut commonly used in the field, in this embodiment, after the first rivet nut 3 is inserted into the boss portion 11, the deformation section 32 of the first rivet nut 3 is deformed by adopting a rivet pulling process, so that the deformation section 32 protrudes circumferentially to form a first protrusion that can be abutted against the boss portion 11. The first rivet nut 3 is provided with a first stopper 31 in the circumferential direction, and the first stopper 31 abuts against the boss 11. The liquid cooling plate 2 is arranged below the boss part 11, and the first bolt 4 passes through the liquid cooling plate 2 and is in threaded connection with the first riveting nut 3. According to the utility model, the first riveting nut 3 and the first bolt piece 4 are utilized to realize the disassembly connection of the liquid cooling plate 2 and the frame 1, so that the feasibility of disassembly of the liquid cooling plate 2 and the frame 1 is realized, no scraps are generated in the assembly process, and the disassembly, the overhaul and the assembly of the liquid cooling plate 2 are convenient.

Further, as shown in fig. 2, the battery pack box further includes a gasket 5, the gasket 5 is disposed on a side of the liquid cooling plate 2 facing away from the first limiting platform 31, and the first bolt member 4 passes through the gasket 5 and the liquid cooling plate 2 and is connected with the first rivet nut 3. The gasket 5 can increase the contact area and disperse the pressure so as to reduce the local stress of the first bolt piece 4 on the liquid cooling plate 2 and play a role in preventing looseness and abrasion.

Further, as shown in fig. 2 and 3, the battery pack case further includes a first sealing member 6, where the first sealing member 6 is specifically a sealing ring, and a plurality of through holes are correspondingly formed in the sealing ring, and the radial size of the through holes is greater than or equal to that of the first limiting table 31, and when assembled, the plurality of through holes and the plurality of first rivet nuts 3 are sleeved on the first limiting table 31 of the first rivet nuts 3 in a one-to-one correspondence manner, so that the first sealing member 6 is clamped between the boss portion 11 and the liquid cooling plate 2, and the tightness between the boss portion 11 and the liquid cooling plate 2 is improved.

Further, the battery pack box body further comprises a bottom plate 7, as shown in fig. 3 and 4, the bottom plate 7 is connected with the frame 1, and the cover protects the liquid cooling plate 2.

Further, as shown in fig. 3-6, the battery pack box further includes at least one second rivet nut 8 and a second bolt member 9, a second limiting table 81 is disposed in the second rivet nut 8 circumferentially, the second limiting table 81 abuts against the bottom of the frame 1, the second rivet nut 8 is inserted into the bottom of the frame 1, and in the same way as the first rivet nut 3, the second rivet nut 8 can be deformed by riveting and protrudes circumferentially to form a second protruding part capable of abutting against the frame 1; the second bolt member 9 is screwed with the second rivet nut 8 through the bottom plate 7 to sandwich the fixed bottom plate 7. In this embodiment, the connection mode of the rivet nut is also preferably adopted between the bottom plate 7 and the frame 1, so as to improve the assembly connection efficiency and realize the disassembly connection between the bottom plate 7 and the frame 1.

Optionally, the battery pack case further includes a second sealing member 10, which is similar to the first sealing member 6, and a through hole is correspondingly formed in the second sealing member 10, so that the second sealing member 10 can be sleeved on the second limiting platform 81, and is clamped between the frame 1 and the bottom plate 7, so that the tightness between the frame 1 and the bottom plate 7 is improved.

Example two

As shown in fig. 7 to 9, the present utility model provides a battery pack case including a frame 1, a first rivet nut 3, a liquid cooling plate 2, and a first screw member 4. The liquid cooling plate 2 is connected with the frame 1 in the same way, the inner side of the frame 1 is provided with a boss part 11 protruding towards the mounting cavity 100, and the liquid cooling plate 2 is connected with the boss part 11 in a disassembling mode through the first riveting nut 3 and the first bolt piece 4. The difference between the present embodiment and the first embodiment is that the battery pack case in the present embodiment includes at least one screw member 101, the bottom plate 7 is fixedly connected with the frame 1 through the screw member 101, and a structural sealant layer 102 is disposed between the bottom plate 7 and the frame 1, so that connectivity and tightness between the bottom plate 7 and the frame 1 can be further improved. Compared with the first embodiment, the bottom plate 7 is connected with the frame 1 in a screw mode, so that the number of parts is reduced, the assembly efficiency is improved, and the production cost is reduced. Preferably, the screw member 101 in this embodiment adopts an FDS screw (Flow Drill screw) in which the heat generated by high-speed rotation of the FDS screw is used to melt the base material, the pressure is increased to punch through the base material and make threads on the base material, so that two or more layers of plates are fixed together, the connection is stable and reliable, and no scraps are generated.

Example III

In this embodiment, a battery pack is provided, which includes a battery and a battery pack case in the first embodiment or the second embodiment, the battery is installed in an installation cavity 100 of the battery pack case, a liquid cooling plate 2 in the battery pack is detachably connected with a frame 1, the assembly is simple and convenient, the connection is reliable and stable, and the liquid cooling plate 2 is convenient to be taken down from the frame, so that the subsequent disassembly and maintenance are convenient.

In addition, still provide an electric automobile in this embodiment, including foretell battery package, liquid cooling board 2 in this battery package can follow and take off with frame 1 is complete, convenient to detach overhauls.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. A battery pack case, comprising:

a frame (1), wherein a mounting cavity (100) capable of accommodating a battery is formed around the frame (1), and the frame (1) is provided with a boss part (11) protruding towards the mounting cavity (100);

the first riveting nut (3) is penetrated through the boss part (11), and the deformation section (32) of the first riveting nut (3) can be deformed by riveting and protrudes towards the circumferential direction to form a first convex part which can be abutted against the boss part (11); a first limiting table (31) is arranged in the circumferential direction of the first riveting nut (3), and the first limiting table (31) is abutted with the boss part (11);

a liquid cooling plate (2) arranged below the boss part (11);

the first bolt piece (4) passes through the liquid cooling plate (2) and is in threaded connection with the first riveting nut (3).

2. The battery pack box according to claim 1, further comprising a gasket (5), wherein the gasket (5) is disposed on a side of the liquid cooling plate (2) away from the first limiting table (31), and the first bolt member (4) passes through the gasket (5) and the liquid cooling plate (2) and then is connected with the first rivet nut (3).

3. The battery pack case according to claim 1, further comprising a first sealing member (6), wherein the first sealing member (6) is sleeved on the first limiting table (31) and is clamped between the boss portion (11) and the liquid cooling plate (2).

4. The battery pack case according to claim 1, further comprising a bottom plate (7), wherein the bottom plate (7) is connected to the frame (1) and covers the liquid cooling plate (2).

5. The battery pack case according to claim 4, further comprising at least one second rivet nut (8) and a second bolt member (9), wherein a second limit table (81) is arranged in the circumferential direction of the second rivet nut (8), the second limit table (81) is abutted against the bottom of the frame (1), the second rivet nut (8) is penetrated through the bottom of the frame (1), and the second rivet nut (8) can be deformed by rivet and protrudes in the circumferential direction to form a second protrusion which can be abutted against the frame (1); the second bolt piece (9) passes through the bottom plate (7) and is in threaded connection with the second riveting nut (8).

6. The battery pack case according to claim 5, further comprising a second sealing member (10), wherein the second sealing member (10) is sleeved on the second limiting table (81) and is clamped between the frame (1) and the bottom plate (7).

7. The battery pack case according to claim 4, further comprising at least one screw member (101), wherein the bottom plate (7) is fixedly connected with the frame (1) through the screw member (101), and a structural sealant layer (102) is provided between the bottom plate (7) and the frame (1).

8. The battery pack case according to claim 7, wherein the screw member (101) is an FDS screw.

9. A battery pack comprising a battery and the battery pack case of any one of claims 1 to 8, the battery being mounted in the battery pack case.

10. An electric vehicle comprising the battery pack of claim 9.