CN216648444U

CN216648444U - Battery and shell assembly thereof

Info

Publication number: CN216648444U
Application number: CN202122507459.9U
Authority: CN
Inventors: 项海标
Original assignee: Huizhou Liwinon Energy Technology Co Ltd
Current assignee: Huizhou Liwinon Energy Technology Co Ltd
Priority date: 2021-10-19
Filing date: 2021-10-19
Publication date: 2022-05-31
Anticipated expiration: 2031-10-19

Abstract

The utility model relates to the technical field of lithium ion battery manufacturing process, in particular to a battery and a shell assembly thereof, comprising: a housing having a tubular configuration; the cover plate comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively arranged at two ends of the shell in a covering mode, and an extending part exceeding the side edge of the shell is formed on the first cover plate and/or the second cover plate so as to reduce the size of a fillet of the shell assembly; when the first cover plate and the second cover plate are effectively enabled to cover the two ends of the shell respectively, the size of an inner fillet of the shell assembly is reduced, and the space utilization rate inside the shell assembly is further improved.

Description

Battery and shell assembly thereof

Technical Field

The utility model relates to the technical field of lithium ion battery manufacturing processes, in particular to a battery and a shell assembly thereof.

Background

The steel shell battery has the advantages of high voltage, large specific energy, long charging and discharging service life, safety, environmental protection and the like, so that the steel shell battery is widely applied to various electronic products (such as mobile phones, digital cameras, notebook computers and electric tools), portable small-sized electric appliances, electric vehicles and energy storage systems.

At present, the steel shell shells in the industry generally use shells formed by stamping, the influence of the thickness and the punching depth of the steel on the internal round corners of the shells produced by the process is large, the space utilization rate of the shells is low, and further the energy density of batteries is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a battery case assembly, and the inside fillet of having solved shell among the prior art receives steel thickness and dashes deeply to influence great, and the lower technical problem of space utilization of shell has realized improving shell space utilization technological effect.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a battery housing assembly comprising:

a housing having a tubular configuration;

the cover plate comprises a first cover plate and a second cover plate, the first cover plate and the second cover plate are respectively arranged at two ends of the shell in a covering mode, and an extending portion exceeding the side edge of the shell is formed on the first cover plate and/or the second cover plate so as to reduce the size of a fillet of the shell assembly.

As an improvement of the battery case assembly according to the present invention, the extension is horizontally disposed with the first cover plate and/or the second cover plate.

As an improvement of the battery case assembly according to the present invention, the extension is disposed perpendicular to the first cover plate and/or the second cover plate.

As an improvement of the battery shell assembly, the width of the extension part is greater than or equal to 2 mm.

As an improvement of the battery housing assembly according to the present invention, the extension portions are symmetrically disposed on the first cover plate and/or the second cover plate.

As an improvement of the battery shell assembly, the shell assembly is of a cuboid or square structure.

As an improvement of the battery case assembly according to the present invention, a position-limiting portion is disposed between the first cover plate and/or the second cover plate and the housing.

As an improvement of the battery case assembly of the present invention, the limiting portion includes a projection and a groove;

the lug is arranged on the first cover plate and/or the second cover plate, the groove is arranged on the shell, and the lug is arranged in the groove.

As an improvement of the battery housing assembly of the present invention, the housing assembly further comprises a terminal post;

the pole is arranged on the first cover plate or the second cover plate or the shell.

Another object of the present invention is to: providing a battery comprising a battery housing assembly as described in any of the preceding paragraphs, further comprising a battery cell disposed within the housing assembly;

the battery cell comprises a positive plate, a negative plate and a diaphragm arranged between the positive plate and the negative plate.

Compared with the prior art, the utility model has the following beneficial effects:

the utility model provides a battery case subassembly, uses through the cooperation of shell, apron, and the shell is the tubular structure, and the apron includes first apron and first apron, and first apron and second apron are covered respectively and are located the both ends of shell, are formed with on first apron and/or the second apron and surpass the extension of the side of shell, when the both ends of shell are located to effectual first apron, the second apron of messenger lid respectively, reduce case subassembly's fillet size, and then improve the inside space utilization of case subassembly.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.

Fig. 2 is a second schematic structural diagram of a first embodiment of the present invention.

Fig. 3 is a schematic structural diagram of a second embodiment of the present invention.

Fig. 4 is a second schematic structural diagram of a second embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a third embodiment of the present invention.

Fig. 6 is a second schematic structural diagram of a third embodiment of the present invention.

Fig. 7 is a schematic view of the structure at a in fig. 5.

Fig. 8 is a schematic view of the structure at B in fig. 6.

Reference numerals: 1. a housing; 2. a cover plate; 3. a first cover plate; 4. a second cover plate; 5. an extension portion; 6. a limiting part; 7. a bump; 8. a groove; 9. a pole column; a. the width of the extension.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

Referring to fig. 1-2, a battery housing assembly includes:

the shell 1, the shell 1 is a tubular structure;

the cover plate 2 comprises a first cover plate 3 and a second cover plate 4, the first cover plate 3 and the second cover plate 4 are respectively arranged at two ends of the shell 1 in a covering mode, and an extending portion 5 exceeding the side edge of the shell 1 is formed on the first cover plate 3 and/or the second cover plate 4 so as to reduce the size of a fillet of the shell assembly.

Compared with the prior art, this embodiment a battery case subassembly, through shell 1, the cooperation of apron 2 is used, shell 1 is the tubular structure, apron 2 includes first apron 3 and first apron 3, first apron 3 and second apron 4 are covered the both ends of locating shell 1 respectively, be formed with the extension 5 that surpasss the side of shell 1 on first apron 3 and/or the second apron 4, effectual first apron 3 that makes, when shell 1's both ends are located to second apron 4 lid respectively, reduce casing subassembly's inside fillet size, and then improve the inside space utilization of casing subassembly.

In the present embodiment, the extension 5 is horizontally disposed with the first cover plate 3 and/or the second cover plate 4; by horizontally arranging the extension part 5 and the first cover plate 3 and/or the second cover plate 4, the connection between the first cover plate 3 and/or the second cover plate 4 and the shell 1 is effectively assisted, and the connection effect between the first cover plate 3 and/or the second cover plate 4 is improved.

In the present embodiment, the width a of the extension is greater than or equal to 2 mm; the width a of the extension part is set to be greater than or equal to 2mm, and can be set according to the size of the shell assembly when in use, such as 2mm, 2.3mm, 2.5mm, 3mm, 3.5mm, 3.8mm, 4mm, 4.5mm, 5mm and the like.

In the present embodiment, the extension portions 5 are symmetrically disposed on the first cover plate 3 and/or the second cover plate 4; the extension parts 5 are used for assisting the connection between the first cover plate 3 and/or the second cover plate 4 and the shell 1, and are symmetrically arranged on the first cover plate 3 and/or the second cover plate 4 through the extension parts 5, so that the auxiliary effect of the extension parts 5 is effectively improved, and the situation that the asymmetrically arranged extension parts 5 influence the installation of a shell component to influence the use of a subsequent battery is prevented.

In the embodiment, the shell assembly is provided in a rectangular or square structure; through the shape setting of casing subassembly, casing subassembly sets up to cuboid or square, simple structure, and the range of application is extensive.

In this embodiment, the housing assembly further comprises a pole 9; the pole 9 is arranged on the first cover plate 3 or the second cover plate 4 or the shell 1; through the setting of utmost point post 9, utmost point post 9 sets up on first apron 3 or second apron 4 or shell 1, during the use, can set up the position of utmost point post 9 according to actual conditions.

Example two

Unlike the first embodiment, in the present embodiment:

referring to fig. 3-4, the extension portion 5 is disposed perpendicular to the first cover plate 3 and/or the second cover plate 4.

In this embodiment, the extension portion 5 is vertically disposed to the first cover plate 3 and/or the second cover plate 4, so as to effectively assist the positioning of the first cover plate 3 and/or the second cover plate 4, and prevent the first cover plate 3 and/or the second cover plate 4 from shifting during the installation, thereby affecting the subsequent battery processing operation.

It should be noted that, in order to enhance the fixing of the first cover plate 3 and/or the second cover plate 4 during the installation process, the extension portion 5 may be fixed to the housing 1 by welding, bonding, adhesion, or the like.

EXAMPLE III

Different from the first and second embodiments, in the present embodiment:

referring to fig. 5-8, a position-limiting portion 6 is disposed between the first cover plate 3 and/or the second cover plate 4 and the housing 1; the connection between the first cover plate 3 and/or the second cover plate 4 and the shell 1 is effectively strengthened by arranging the limiting part 6 between the first cover plate 3 and/or the second cover plate 4 and the shell 1.

In the present embodiment, the position-limiting portion 6 includes a protrusion 7 and a groove 8; the bump 7 is arranged on the first cover plate 3 and/or the second cover plate 4, the groove 8 is arranged on the shell 1, and the bump 7 is arranged in the groove 8; through the cooperation use of lug 7, recess 8, lug 7 sets up on first apron 3 and/or second apron 4, and recess 8 sets up on shell 1, and during the use, when first apron 3, second apron 4 lid respectively located shell 1's both ends, lug 7 is located recess 8, and effectual supplementary first apron 3 and/or the fixed of second apron 4.

It should be noted that, the positions of the protrusion 7 and the groove 8 may also be interchanged, when the protrusion 7 is disposed on the housing 1, the groove 8 is disposed on the first cover plate 3 and/or the second cover plate 4, and when the first cover plate 3, and the second cover plate 4 are respectively disposed at two ends of the housing 1, the protrusion 7 is disposed in the groove 8.

Example four

A battery comprises the battery shell assembly and also comprises a battery core arranged in the shell assembly; the battery cell comprises a positive plate, a negative plate and a diaphragm arranged between the positive plate and the negative plate.

In this embodiment, through the cooperation use of this casing subassembly, electric core, the casing subassembly that the casing subassembly adopted in any one of embodiment one to three, the effective utilization ratio of the interior space who improves the casing subassembly, when the size is the same, the battery that adopts this casing subassembly can improve the energy density of battery.

In summary, the first to third embodiments are battery case assemblies having a high space utilization ratio, and the difference is that the connection strength between the first cover plate 3 and/or the second cover plate 4 and the housing 1 is higher in the second and third embodiments than in the first embodiment, and the fourth embodiment is a battery using the case assembly.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. A battery housing assembly, comprising:

a housing having a tubular configuration;

2. A battery case assembly as defined in claim 1, wherein said extension is disposed horizontally with said first cover plate and/or said second cover plate.

3. The battery housing assembly of claim 1, wherein the extension is disposed perpendicular to the first cover plate and/or the second cover plate.

4. A battery housing assembly according to claim 1, wherein the width of said extension is greater than or equal to 2 mm.

5. The battery case assembly of any one of claims 1-4, wherein the extensions are symmetrically disposed on the first cover plate and/or the second cover plate.

6. The battery housing assembly of claim 1, wherein the housing assembly is provided in a rectangular parallelepiped or square configuration.

7. The battery case assembly of claim 1, wherein a stopper is disposed between the first cover plate and/or the second cover plate and the housing.

8. The battery housing assembly of claim 7, wherein the limiting portion comprises a protrusion, a groove;

9. A battery housing assembly as in claim 1, wherein said housing assembly further comprises a post;

10. A battery comprising a battery housing assembly of any of claims 1-9, and further comprising a cell disposed within the housing assembly;