CN216288651U - Battery shell subassembly, battery module - Google Patents

Abstract

The utility model provides a battery shell assembly, a battery and a battery module, wherein the battery shell assembly comprises an explosion-proof valve and a shell for containing a battery core, the shell is provided with a side surface and two opposite end surfaces, the distribution directions of the two end surfaces of the shell are parallel to the side surface of the shell, and one end surface of the two end surfaces of the shell is used for arranging an electronic component; the explosion-proof valve is arranged on the side surface of the shell. Through setting up the explosion-proof valve in the side of casing to make the explosion-proof valve keep away from the electronic components who sets up in casing terminal surface department, solved among the prior art battery explosion-proof valve's the mode of setting up and can make the electronic components of module have the problem of potential safety hazard.

Description

Battery shell subassembly, battery module

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery shell assembly, a battery and a battery module.

Background

At present, in the traditional battery design, an explosion-proof valve is usually arranged on a cover plate, so that when the internal thermal runaway of a battery cell occurs, the explosion-proof valve is opened to prevent the explosion of the battery cell.

However, the explosion-proof valve of the battery is usually on the same side as the electrode terminal, the electrode terminals of different batteries in the battery module are connected through a connecting sheet, and components such as signal acquisition in the module are all arranged near the electrode terminal of the battery; if the battery is out of control, the explosion-proof valve is opened, and inside electrolyte and high-temperature material can spout at explosion-proof valve port portion, can have the spark blowout even, cause the electrode terminal of battery and the electronic components such as signal acquisition of module impaired, can lead to the explosion on fire of whole module seriously, cause the incident.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a battery shell assembly, a battery and a battery module, and aims to solve the problem that potential safety hazards exist in electronic components of the module due to the arrangement mode of a battery explosion-proof valve in the prior art.

In order to achieve the above object, according to one aspect of the present invention, there is provided a battery case assembly including: the battery comprises a shell for accommodating a battery core, wherein the shell is provided with a side surface and two opposite end surfaces, the distribution directions of the two end surfaces of the shell are parallel to the side surface of the shell, and one of the two end surfaces of the shell is used for arranging an electronic component; the explosion-proof valve is arranged on the side face of the shell.

Further, the shell comprises a main shell part and two cover plates, wherein the main shell part is provided with two opposite end parts, and the two cover plates are respectively arranged at the two end parts of the main shell part; the explosion-proof valve is arranged on the main shell part; and/or the side of the shell is provided with a mounting port communicated with the inner cavity of the shell, and the explosion-proof valve is arranged at the mounting port.

Further, the battery case assembly further includes: the support, the support extends to set up in installing port department along the circumference of installing port, and the explosion-proof valve sets up on the support.

Furthermore, a first step structure is arranged on the outer wall of the support, and the support is clamped on the shell through the first step structure; and/or the bracket is enclosed into a fixed hole, and the explosion-proof valve is arranged in the fixed hole.

Further, the step surface and the step side surface of the first step structure are respectively contacted with the inner wall surface of the shell and the wall surface of the mounting opening; and/or the inner wall surface of the fixed hole is provided with a second step structure, the explosion-proof valve is of a plate-shaped structure, and the explosion-proof valve is clamped at the second step structure.

Further, the first step structure comprises one or more steps, and when the first step structure comprises one step, the step surface and the step side surface of the step are respectively contacted with the inner wall surface of the shell and the wall surface of the mounting opening; when the first step structure comprises a plurality of steps, the plurality of steps comprise a first step and at least one second step, the step surface and the step side surface of the first step are respectively contacted with the inner wall surface of the shell and the wall surface of the mounting opening, and the at least one second step is positioned at the outer side of the shell; and/or the inner plate surface and the side surface of the explosion-proof valve are respectively contacted with the step surface and the step side surface of the second step structure.

Furthermore, the explosion-proof valve comprises an explosion-proof plate body and a connecting plate body surrounding the outer side of the explosion-proof plate body, the thickness of the connecting plate body is larger than that of the explosion-proof plate body, and the connecting plate body is clamped at the second step structure.

Further, the inner plate surface and the side surface of the connecting plate body are respectively used for contacting with the step surface and the step side surface of the second step structure.

According to another aspect of the present invention, there is provided a battery including a battery cell and the battery case assembly described above.

According to still another aspect of the present invention, there is provided a battery module including a plurality of the above-described batteries, the plurality of batteries being sequentially arranged in a preset direction.

By applying the technical scheme of the utility model, the battery shell assembly comprises an explosion-proof valve and a shell for containing the battery core, the shell is provided with a side surface and two opposite end surfaces, the distribution direction of the two end surfaces of the shell is parallel to the side surface of the shell, and one end surface of the two end surfaces of the shell is used for arranging an electronic component; the explosion-proof valve is arranged on the side surface of the shell. Through setting up the side with explosion-proof valve at the casing to make explosion-proof valve keep away from the electronic components who sets up in casing terminal surface department, with when explosion-proof valve was opened, avoid spun electrolyte, and/or high temperature material, and/or spark to cause the damage to electronic components, and then reduce electronic components's potential safety hazard, solved among the prior art battery explosion-proof valve the setting mode can make the electronic components of module have the problem of potential safety hazard.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is a schematic view of a battery case assembly according to the present invention with a cover plate removed;

fig. 2 is a schematic view showing the structure of a main case part of a battery case assembly according to the present invention;

FIG. 3 shows a schematic structural view of an explosion proof valve of a battery housing assembly according to the present invention;

fig. 4 is a schematic structural view showing a holder of a battery case assembly according to the present invention;

fig. 5 is a schematic view showing an assembled structure of the main housing part and the explosion-proof valve and the holder of the battery case assembly according to the present invention.

Wherein the figures include the following reference numerals:

10. a housing; 101. a side surface; 11. a main housing portion; 111. an installation port; 112. an end portion;

20. an explosion-proof valve; 21. an explosion-proof plate body; 22. connecting the plate bodies;

30. a support; 31. a first step structure; 311. a first step; 3111. a step surface of the first step; 3112. a step side of the first step; 312. a second step; 32. a fixing hole; 33. a second step structure; 331. a step surface of the second step structure; 332. a step side of the second step structure.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

The utility model provides a battery shell assembly, please refer to fig. 1 to 5, which includes an explosion-proof valve 20 and a shell 10 for accommodating a battery cell, wherein the shell 10 has a side surface 101 and two opposite end surfaces, the two end surfaces of the shell 10 are distributed in a direction parallel to the side surface 101 of the shell 10, and one of the two end surfaces of the shell 10 is used for arranging an electronic component; the explosion-proof valve 20 is provided at a side 101 of the housing 10.

The electronic components herein include electrode terminals of the battery and/or electronic components such as a signal collector of the battery module.

In the battery shell assembly, the explosion-proof valve 20 is arranged on the side surface 101 of the shell 10, so that the explosion-proof valve 20 is far away from the electronic components arranged on the end surface of the shell 10, when the explosion-proof valve 20 is opened, the damage of the sprayed electrolyte, and/or high-temperature substances, and/or sparks to the electronic components is avoided, the potential safety hazard of the electronic components is further reduced, and the problem that the potential safety hazard of the electronic components of the module exists due to the arrangement mode of the battery explosion-proof valve in the prior art is solved.

Specifically, the housing 10 is strip-shaped, and the extending direction of the housing 10 is the same as the distribution direction of the two end faces thereof.

Alternatively, the side 101 of the housing 10 is perpendicular to its end face; for example, the housing 10 is a rectangular parallelepiped.

Optionally, the housing 10 is made of aluminum.

In the present embodiment, the case 10 includes a main case portion 11 and two cover plates, the main case portion 11 has two oppositely disposed end portions, the two cover plates are respectively disposed at the two end portions of the main case portion 11, fig. 1 shows the two end portions 112 of the main case portion 11; the explosion-proof valve 20 is provided on the main case portion 11; the two ends of the main housing 11 are distributed in the same direction as the two end faces of the housing 10, the two end faces are formed on the outward facing plate surfaces of the two cover plates, and the side surface of the main housing 11 forms the side surface 101 of the housing 10.

Specifically, the main housing 11 is cylindrical, and two cover plates are respectively provided at two ports of the main housing 11.

Optionally, the cover plate is welded to the main housing portion 11.

Specifically, the side of the housing 10 is provided with a mounting port 111 communicating with the internal cavity of the housing 10, and the explosion-proof valve 20 is provided at the mounting port 111; namely, the mounting port 111 is provided in the main housing portion 11.

In the present embodiment, the battery case assembly further includes a bracket 30, the bracket 30 is disposed at the mounting opening 111 along a circumferential extension of the mounting opening 111, and the explosion-proof valve 20 is disposed on the bracket 30.

In the present embodiment, the bracket 30 and the housing 10 are assembled in a specific manner, in which the outer wall of the bracket 30 is provided with the first step structure 31, and the bracket 30 is clamped on the housing 10 through the first step structure 31.

Specifically, the step surface and the step side surface of the first step structure 31 are in contact with the inner wall surface of the housing 10 and the wall surface of the mounting opening 111, respectively.

Specifically, the first stepped structure 31 includes one or more steps, and when the first stepped structure 31 includes one step, a step surface and a step side surface of the step are in contact with the inner wall surface of the housing 10 and the wall surface of the mounting opening 111, respectively.

When the first step structure 31 includes a plurality of steps, the plurality of steps includes a first step 311 and at least one second step 312, a step surface and a step side surface of the first step 311 are respectively in contact with the inner wall surface of the housing 10 and the wall surface of the mounting opening 111, and the at least one second step 312 is located outside the housing 10; fig. 4 shows a step face 331 of the second step structure and a step side face 332 of the second step structure.

Specifically, the thickness of the portion of the housing 10 for contact with the first step structure 31 is less than or equal to the height of the step side of the first step structure 31, i.e., the height of the step side of the first step 311 is equal to the thickness of the portion of the housing 10 for contact with the first step 311; wherein the thickness direction of the portion of the housing 10 for contacting the first stepped structure 31 and the height direction of the stepped side of the first stepped structure 31 are parallel.

In the present embodiment, the specific assembling manner of the bracket 30 and the explosion-proof valve 20 is as follows: the bracket 30 encloses a fixing hole 32, the fixing hole 32 is communicated with the inner cavity of the housing 10, and the explosion-proof valve 20 is installed in the fixing hole 32.

Specifically, the inner wall surface of the fixing hole 32 is provided with a second step structure 33, the explosion-proof valve 20 is a plate-shaped structure, and the explosion-proof valve 20 is clamped at the second step structure 33.

Specifically, the inner plate surface and the side surface of the explosion-proof valve 20 are respectively in contact with the step surface and the step side surface of the second stepped structure 33; the inner plate surface of the explosion-proof valve 20 is disposed toward the inside of the housing 10. Fig. 4 shows a step face 3111 of the first step and a step side face 3112 of the first step.

Specifically, the explosion-proof valve 20 comprises an explosion-proof plate body 21 and a connecting plate body 22 surrounding the outer side of the explosion-proof plate body 21, the thickness of the connecting plate body 22 is greater than that of the explosion-proof plate body 21, and the connecting plate body 22 is clamped at the second step structure 33; wherein the connecting plate body 22 is an annular plate.

Specifically, the inner plate surface and the side surface of the connecting plate body 22 are respectively used for contacting with the step surface and the step side surface of the second step structure 33; the inner plate surface of the connecting plate 22 is a surface facing the inside of the housing 10, of the two plate surfaces of the connecting plate 22.

Alternatively, the thickness of the connecting plate body 22 is less than or equal to the height of the step side of the second step structure 33, and the thickness direction of the connecting plate body 22 is parallel to the height direction of the step side of the second step structure 33.

Specifically, the second stepped structure 33 includes a step, and a step surface and a step side surface of the step of the second stepped structure 33 are in contact with the inner plate surface and the side surface of the explosion-proof valve 20, respectively.

Specifically, the bracket 30 is welded at the mounting port 111, and the explosion-proof valve 20 is welded on the bracket 30; the explosion-proof valve 20 is welded to the housing 10 by means of the bracket 30, if there is a risk of welding through the housing 10 if the explosion-proof valve 20 is welded directly to the housing 10.

Specifically, the wall thickness of the housing portion of the housing 10 where the side 101 of the explosion-proof valve 20 is provided is 0.1mm to 1 mm; i.e. the wall thickness of the main housing part 11 is 0.1mm to 1 mm.

Specifically, the bottom side of the housing 10 forms a side 101 where the explosion-proof valve 20 is disposed.

The utility model also provides a battery, which comprises a battery core and the battery shell assembly.

The utility model also provides a battery module which comprises the battery, and the plurality of batteries are sequentially arranged along the preset direction.

Specifically, the preset direction is perpendicular to the distribution direction of both end faces of the housing assembly of each cell, and the preset direction is perpendicular to the side face of the housing assembly of each cell on which the explosion-proof valve 20 is provided.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

in the battery shell assembly of the present invention, the battery shell assembly includes an explosion-proof valve 20 and a casing 10 for accommodating a battery cell, the casing 10 has a side surface 101 and two opposite end surfaces, the two end surfaces of the casing 10 are distributed in a direction parallel to the side surface 101 of the casing 10, and one of the two end surfaces of the casing 10 is used for arranging electronic components; the explosion-proof valve 20 is provided at a side 101 of the housing 10. Through setting up explosion-proof valve 20 in the side 101 of casing 10 to make explosion-proof valve 20 keep away from the electronic components who sets up in casing 10 terminal surface department, with when explosion-proof valve 20 was opened, avoid spun electrolyte, and/or high temperature material, and/or spark to cause the damage to electronic components, and then reduce electronic components's potential safety hazard, solved among the prior art battery explosion-proof valve's the mode of setting and can make the electronic components of module have the problem of potential safety hazard.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A battery housing assembly, comprising:

the battery shell comprises a shell (10) used for accommodating the battery core, wherein the shell (10) is provided with a side surface (101) and two opposite end surfaces, the distribution direction of the two end surfaces of the shell (10) is parallel to the side surface (101) of the shell (10), and one of the two end surfaces of the shell (10) is used for arranging an electronic component;

an explosion-proof valve (20), the explosion-proof valve (20) being arranged on a side face (101) of the housing (10).

2. The battery case assembly of claim 1,

the shell (10) comprises a main shell part (11) and two cover plates, wherein the main shell part (11) is provided with two opposite ends, and the two cover plates are respectively arranged at the two ends of the main shell part (11); the explosion-proof valve (20) is arranged on the main shell part (11); and/or

The side of the shell (10) is provided with a mounting opening (111) communicated with the inner cavity of the shell (10), and the explosion-proof valve (20) is arranged at the mounting opening (111).

3. The battery case assembly of claim 2, further comprising:

the bracket (30), the bracket (30) is along the circumference extension setting of installing port (111) is in installing port (111), explosion-proof valve (20) sets up on the bracket (30).

4. The battery case assembly of claim 3,

a first step structure (31) is arranged on the outer wall of the support (30), and the support (30) is clamped on the shell (10) through the first step structure (31); and/or

The support (30) is enclosed to form a fixing hole (32), and the explosion-proof valve (20) is installed in the fixing hole (32).

5. The battery case assembly of claim 4,

the step surface and the step side surface of the first step structure (31) are respectively contacted with the inner wall surface of the shell (10) and the wall surface of the mounting opening (111); and/or

The inner wall surface of the fixing hole (32) is provided with a second step structure (33), the explosion-proof valve (20) is of a plate-shaped structure, and the explosion-proof valve (20) is clamped at the second step structure (33).

6. The battery case assembly of claim 5,

the first step structure (31) comprises one or more steps, and when the first step structure (31) comprises one step, the step surface and the step side surface of the step are respectively contacted with the inner wall surface of the shell (10) and the wall surface of the mounting opening (111); when the first step structure (31) comprises a plurality of steps, the plurality of steps comprise a first step (311) and at least one second step (312), the step surface and the step side surface of the first step (311) are respectively contacted with the inner wall surface of the shell (10) and the wall surface of the mounting port (111), and the at least one second step (312) is positioned at the outer side of the shell (10); and/or

And the inner plate surface and the side surface of the explosion-proof valve (20) are respectively contacted with the step surface and the step side surface of the second step structure (33).

7. A battery housing assembly according to claim 5, wherein said explosion-proof valve (20) comprises an explosion-proof plate body (21) and a connection plate body (22) surrounding the explosion-proof plate body (21), the thickness of the connection plate body (22) being larger than the thickness of the explosion-proof plate body (21), the connection plate body (22) being snapped at the second step formation (33).

8. The battery housing assembly of claim 7, wherein the inner plate face and the side face of the connection plate body (22) are adapted to contact the step face and the step side face of the second step structure (33), respectively.

9. A battery comprising a cell and the battery housing assembly of any of claims 1-8.

10. A battery module comprising a plurality of the battery cells of claim 9, wherein the plurality of the battery cells are arranged in sequence along a predetermined direction.

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