CN217606991U

CN217606991U - Electricity core subassembly and have its battery

Info

Publication number: CN217606991U
Application number: CN202221292223.6U
Authority: CN
Inventors: 宾桂青; 卿艳华; 陈本良; 肖龙淋; 吕品风; 刘仕臻
Original assignee: Shenzhen Xinwangda Intelligent Technology Co ltd
Current assignee: Shenzhen Xinwangda Intelligent Technology Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-10-18
Anticipated expiration: 2032-05-26

Abstract

The utility model provides a cell subassembly and have its battery, wherein, the cell subassembly, include: the battery cell comprises a battery cell body and a battery cell, wherein the battery cell body is provided with a lug; the protection plate is positioned at the end part of the cell body and comprises a first end wall facing the cell body, a second end wall far away from the cell body, and a first side wall and a second side wall which are connected between the first end wall and the second end wall; and a metal sheet disposed at the first end wall and electrically connected with the protection plate. The tab sequentially bypasses the first side wall, the second end wall and the second side wall, and the end part of the tab extends into the space between the protection plate and the battery cell body and is connected with the metal sheet. The technical scheme of this application cuts out through avoiding utmost point ear, reduces the process that utmost point ear was cut out promptly and improves holistic production efficiency.

Description

Electricity core subassembly and have its battery

Technical Field

The utility model relates to an electricity core processing technology field particularly, relates to an electricity core subassembly and have its battery.

Background

In the process of battery processing, the tab and the nickel sheet on the protection plate need to be welded to be conducted.

In the correlation technique, utmost point ear and nickel piece all are located between protection shield and the electric core after the processing, but because the length of utmost point ear is generally all longer, and practical use then probably about 4mm to 6.5mm, consequently need can weld with the nickel piece after the utmost point ear is cuted, then can increase the process that utmost point ear was cuted like this, and then lead to production efficiency to be lower.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a battery cell subassembly and have its battery to the utmost point ear that solves among the correlation technique needs to be cuted and then leads to the lower problem of production efficiency.

In order to achieve the above object, according to an aspect of the present invention, there is provided a cell assembly, comprising: the battery cell comprises a battery cell body and a battery cell, wherein the battery cell body is provided with a lug; the protection plate is positioned at the end part of the cell body and comprises a first end wall facing the cell body, a second end wall far away from the cell body, and a first side wall and a second side wall which are connected between the first end wall and the second end wall; a metal sheet disposed at the first end wall and electrically connected with the protection plate. The tab sequentially bypasses the first side wall, the second end wall and the second side wall, and the end part of the tab extends into the space between the protection plate and the battery cell body and is connected with the metal sheet.

Further, the middle portions of the tabs are stacked and form a stacked structure, and the stacked structure is located at the first side wall and/or the second end wall and/or the second side wall.

Furthermore, the electric core assembly further comprises head gummed paper, and the head gummed paper is coated on the outer side of the pole lug.

Furthermore, the battery cell assembly further comprises a double-faced adhesive tape, and the double-faced adhesive tape is pasted between the end part of the lug led out from the battery cell body and the protection plate.

Furthermore, the metal sheet comprises a first sheet body connected with the protection plate and a second sheet body stacked with the first sheet body, and the end part of the tab is located between the first sheet body and the second sheet body.

Furthermore, the electric core assembly further comprises top sealing adhesive tape, and the top sealing adhesive tape is located between the double-sided adhesive tape and the metal sheet.

Further, the electric core assembly further comprises a gasket, and the gasket is located between the top sealing gummed paper and the protection plate.

Further, the gasket comprises a foam gasket, and the foam gasket is located on the side portion of the tab.

Further, the protection plate is a PCM plate.

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

Use the technical scheme of the utility model, the protection shield is located the tip of electric core body, and the protection shield has relative first end wall and second end wall to and relative first side wall and second side wall, first side wall and second side wall are located between first end wall and the second end wall, and first side wall and second side wall interval setting on the width direction of electric core body promptly. The metal sheet is electrically connected with the protection plate at the first end wall, the tab extends out of the cell body, sequentially bypasses the first side wall, the second end wall and the second side wall, and finally extends into the space between the protection plate and the cell body and is connected with the metal sheet. Through foretell setting, utmost point ear need not to cut, only needs to wind utmost point ear in the periphery of protecting plate, then can arrange the unnecessary part rational arrangement of utmost point ear like this, and such mode of setting up is simple simultaneously, and the operation of being convenient for compares in prior art, and the technical scheme of this application is tailor through avoiding utmost point ear, reduces the process that utmost point ear was tailor promptly and improves holistic production efficiency.

Drawings

The accompanying drawings, which form a part of the specification, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the invention and together with the description serve to explain the invention and do not constitute a limitation on the scope of the invention. In the drawings:

fig. 1 shows a schematic perspective view of an embodiment of an electrical core assembly according to the present invention;

figure 2 shows a schematic partial cross-sectional view of the electrical core assembly of figure 1;

fig. 3 is a partial cross-sectional view illustrating the electric core assembly of fig. 1 having a stacked structure.

Wherein the figures include the following reference numerals:

10. a cell body; 11. a tab; 111. a laminated structure; 20. a protection plate; 21. a first end wall; 22. a second end wall; 23. a first side wall; 24. a second side wall; 30. a metal sheet; 31. a first sheet body; 32. a second sheet body; 40. head gummed paper; 50. double-sided adhesive tape; 60. a gasket; 61. a foam gasket; 70. and (6) sealing the gummed paper.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

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.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

As shown in fig. 1 and 2, in the present embodiment, the electric core assembly includes: the battery cell comprises a battery cell body 10, a protection plate 20 and a metal sheet 30. The cell body 10 has tabs 11, and the tabs 11 include two or more positive and negative polarities. The protection plate 20 is located at an end portion of the cell body 10, and the protection plate 20 includes a first end wall 21 facing the cell body 10, a second end wall 22 away from the cell body 10, and a first side wall 23 and a second side wall 24 connected between the first end wall 21 and the second end wall 22, and the first side wall 23 and the second side wall 24 are spaced apart in a width direction corresponding to the cell body 10. The metal sheet 30 is disposed at the first end wall 21 and electrically connected to the protection plate 20. The tab 11 sequentially bypasses the first side wall 23, the second end wall 22 and the second side wall 24, and the end of the tab 11 extends between the protective plate 20 and the cell body 10 and is connected to the metal sheet 30.

With the technical solution of the present embodiment, the protection plate 20 is located at an end portion of the cell body 10, the protection plate 20 has a first end wall 21 and a second end wall 22 which are opposite to each other, and a first side wall 23 and a second side wall 24 which are opposite to each other, the first side wall 23 and the second side wall 24 are located between the first end wall 21 and the second end wall 22, and the first side wall 23 and the second side wall 24 correspond to a width direction of the cell body 10. The metal sheet 30 is connected with the first end wall 21, and the tab 11 extends from the cell body 10, sequentially bypasses the first side wall 23, the second end wall 22 and the second side wall 24, finally extends between the protective plate 20 and the cell body 10, and is connected with the metal sheet 30. Through foretell setting, utmost point ear 11 need not to cut, only needs to wind utmost point ear 11 around the periphery of establishing at protection board 20, can arrange the unnecessary part rational arrangement of utmost point ear 11 like this, and such mode of setting up is simple simultaneously, and the operation of being convenient for compares in prior art, and the technical scheme of this embodiment is tailor through avoiding utmost point ear, reduces the process that utmost point ear was tailor promptly and improves holistic production efficiency.

As shown in fig. 1 and 3, in the present embodiment, the middle portions of the tabs 11 are stacked and formed into a stacked structure 111, and the stacked structure 111 is located at the second end wall 22. When the length of the tab 11 is longer, it is necessary to stack part of the structure of the tab 11 to form a stacked structure 111, and to place the stacked structure 111 at the second end wall 22, so that the tab 11 can be reasonably arranged at the outer circumference of the protection plate 20. And the stacked structure 111 is provided at the second end wall 22, which can stabilize the position of the stacked structure 111.

As shown in fig. 1 and 3, in the present embodiment, when the length of the tab 11 is too long, in order to avoid the height of the laminated structure 111 being too large and the size of the entire battery being increased, the laminated structure 111 may be provided at other positions, such as the first side wall 23 or the second side wall 24. Meanwhile, the laminated structure 111 may be plural, which enables the plural laminated structures 111 to be provided at the first side wall 23 and the second end wall 22, or at the first side wall 23 and the second side wall 24, or at the second end wall 22 and the second side wall 24, or at the first side wall 23, the second end wall 22, and the second side wall 24.

As shown in fig. 1 to 3, in the present embodiment, the electric core assembly further includes a head gummed paper 40, and the head gummed paper 40 is coated on the outer side of the tab 11. The tab 11 can be protected inside the head adhesive tape 40, so that the risk of electric leakage, short circuit, open circuit and the like caused by the exposed tab 11 is avoided.

As shown in fig. 1 to fig. 3, in the present embodiment, the cell assembly further includes a double-sided tape 50, and the double-sided tape 50 is adhered between the end portion of the tab 11 led out from the cell body 10 and the protection plate 20. The provision of the double-sided tape 50 can bond the tab 11 and the protection plate 20 together and make the position of the tab 11 more stable. Specifically, the tab 11 includes a first section flush with the end of the cell body 10, a second section attached to the first side wall 23, a third section attached to the second end wall 22, a fourth section attached to the second side wall 24, and a fifth section connected to the metal sheet 30. The double-sided tape 50 includes a first long section adhered between the first section and the protective plate 20 and a second long section adhered between the second, third, and fourth sections and the protective plate 20.

As shown in fig. 1 to 3, in the present embodiment, the metal sheet 30 includes a first sheet 31 connected to the protection plate 20 and a second sheet 32 laminated with the first sheet 31, and the end of the tab 11 is located between the first sheet 31 and the second sheet 32. The end portions of the tabs 11 can be clamped tightly by the arrangement of the first sheet body 31 and the second sheet body 32, so that the positions of the tabs 11 are more stable, and meanwhile, the connection effect of the metal sheets 30 and the tabs 11 can be ensured.

As shown in fig. 1 to fig. 3, in the present embodiment, the electric core assembly further includes a top-sealing adhesive tape 70, and the top-sealing adhesive tape 70 is located between the double-sided adhesive tape 50 and the metal sheet 30. The top seal adhesive 70 is located between the first section and the metal sheet 30. This can provide a partitioning effect.

As shown in fig. 1 to fig. 3, in the present embodiment, the electric core assembly further includes a spacer 60, and the spacer 60 is located between the top-sealing adhesive paper 70 and the protection plate 20. The spacer 60 can support the protection plate 20 and can play a role of shock absorption of the protection plate 20.

As shown in fig. 1 to 3, in the present embodiment, the gasket 60 includes a foam gasket 61, and the foam gasket 61 is located at the side of the tab 11. The shock absorption effect of the foam gasket 61 is better.

As shown in fig. 1 to 3, in the present embodiment, the protection plate 20 is a PCM plate.

As shown in fig. 1 to fig. 3, the cell assembly of the present embodiment mainly includes a cell body 10 (polymer lithium ion cell), a protection plate 20 (PCM), adhesive tape, glue, and hot melt adhesive, wherein the top sealing adhesive tape 70 is fixed to the inner side of the cell body 10 by the glue, the PCM is connected to the tab 11 of the cell body 10 by spot welding, and finally, the corresponding adhesive tape is assembled, and the adhesive is easy to tear and stick, and the colloid is used. The technical scheme of the embodiment is characterized in that the mode of the cell welding protection plate for increasing the capacity of the polymer battery is that the tab 11 is not sheared, and after being directly welded with a nickel sheet on the PCM, the tab 11 is wound for one circle around the PCM through a plate folding process so as to absorb the length of the tab 11 of the cell body 10. The effect of battery encapsulation is reached. Compared with the conventional battery design, the battery core lug cutting process can be increased because the supplied materials of the battery core lug (8 mm-11 mm) are too long and the actually used lug 11 is 4 mm-6.5 mm long, and the technical scheme of the embodiment greatly reduces the processing time of the whole battery production and saves the cost because one process is reduced.

According to another aspect of the present application, a battery is provided, and the battery of the embodiment includes a battery cell assembly, which is the above-mentioned battery cell assembly. Because the pole lug does not need to be sheared, the procedure of shearing the pole lug is reduced, and the processing efficiency of the electric core component is higher, so that the battery with the electric core component also has the advantages.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplification of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be interpreted as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

For ease of description, spatially relative terms such as "over 8230 \ 8230;,"' over 8230;, \8230; upper surface "," above ", etc. may be used herein to describe the spatial relationship of one device or feature to another device or feature as shown 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 terms "at 8230; \8230; above" may include both orientations "at 8230; \8230; above" and "at 8230; \8230; 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 should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.

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

1. An electric core assembly, comprising:

a cell body (10) having tabs (11);

a protective plate (20) located at an end of the cell body (10), the protective plate (20) including a first end wall (21) facing the cell body (10), a second end wall (22) remote from the cell body (10), and first and second side walls (23, 24) connected between the first and second end walls (21, 22);

a metal sheet (30) provided at the first end wall (21) and electrically connected to the protection plate (20);

the tab (11) sequentially bypasses the first side wall (23), the second end wall (22) and the second side wall (24), and the end part of the tab (11) extends into the space between the protective plate (20) and the battery cell body (10) and is connected with the metal sheet (30).

2. The electric core assembly according to claim 1, characterized in that the middle parts of the tabs (11) are arranged one above the other and form a stacked structure (111), the stacked structure (111) being located at the first side wall (23) and/or at the second end wall (22) and/or at the second side wall (24).

3. The electric core assembly according to claim 1, further comprising a head gummed paper (40), wherein the head gummed paper (40) is coated on the outer side of the tab (11).

4. The battery pack assembly according to claim 1, further comprising a double-sided adhesive tape (50), wherein the double-sided adhesive tape (50) is adhered between the end of the tab (11) led out from the cell body (10) and the protective plate (20).

5. The electric core assembly according to claim 1, characterized in that said metal sheet (30) comprises a first sheet (31) connected with said protection plate (20) and a second sheet (32) laminated with said first sheet (31), the ends of said tab (11) being located between said first sheet (31) and said second sheet (32).

6. The electrical core assembly according to claim 4, further comprising a top-sealing adhesive paper (70), the top-sealing adhesive paper (70) being located between the double-sided adhesive tape (50) and the metal sheet (30).

7. The electric core assembly according to claim 6, further comprising a spacer (60), said spacer (60) being located between said top sealing glue (70) and said protective plate (20).

8. The core assembly according to claim 7, characterized in that the gasket (60) comprises a foam gasket (61), the foam gasket (61) being located at the side of the tab (11).

9. The electric core assembly according to any of the claims 1 to 8, characterized in that said protection plate (20) is a PCM plate.

10. A battery comprising an electric core assembly, characterized in that the electric core assembly is an electric core assembly according to any one of claims 1 to 9.