CN217444587U

CN217444587U - Current collecting component, electrode assembly and battery

Info

Publication number: CN217444587U
Application number: CN202221223422.1U
Authority: CN
Inventors: 车佩佩
Original assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Current assignee: Envision Power Technology Jiangsu Co Ltd; Envision Ruitai Power Technology Shanghai Co Ltd
Priority date: 2022-05-20
Filing date: 2022-05-20
Publication date: 2022-09-16
Anticipated expiration: 2032-05-20

Abstract

The utility model discloses a mass flow component, electrode subassembly and battery belongs to battery technical field. The utility model discloses a current-collecting component, electrode subassembly and battery, current-collecting component include main part and connecting portion, and the main part is equipped with utmost point ear connecting portion; the main body part is provided with a first end and a second end which are opposite along a first direction; a connecting part connected to a first end of the main body part; the main body part is also provided with a third end and a fourth end which are opposite along the second direction, the third end is provided with a notch, and the tab connecting part is positioned at the third end; the second direction is perpendicular to the first direction. Through set up the breach in one side of main part width direction for utmost point ear accessible breach is connected with utmost point ear connecting portion around locating the main part one side of keeping away from electrode subassembly, compares in prior art, can reduce the mass flow component and occupy the battery inner space, and then is favorable to dwindling the battery volume, satisfies user demand.

Description

Current collecting component, electrode assembly and battery

Technical Field

The utility model relates to a battery technology field especially relates to a mass flow component, electrode subassembly and battery.

Background

The current collecting component of the rechargeable battery is used for connecting a tab of the battery core and a pole of the battery so as to guide and convey the current of the electrode of the rechargeable battery.

In the existing battery, a tab of a battery cell is usually wound to one side of a current collecting member far away from the battery cell, and then the tab and the current collecting member are welded and fixed, so that the tab is supported by the current collecting member. However, the tabs are wound around the two sides of the current collecting member, which increases the width occupied by the current collecting member, increases the volume of the battery, and fails to satisfy the user's demand.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a mass flow component, electrode subassembly and battery, mass flow component occupation space is little, is favorable to dwindling the battery volume.

In order to realize the purpose, the following technical scheme is provided:

in a first aspect, there is provided a current collecting member including:

a main body part provided with a tab connection part; the body portion having first and second ends opposite in a first direction;

a connecting portion connected to the first end of the main body portion;

the main body part is also provided with a third end and a fourth end which are opposite along a second direction, the third end is provided with a notch, and the tab connecting part is positioned at the third end; the second direction is perpendicular to the first direction.

As an alternative of the current collecting member, along the first direction, the length L1 of the main body part and the length L2 of the notch are respectively equal to 0.1L1 and L2 and 0.9L 1.

As an alternative of the current collecting member, the width of the main body portion in the second direction is K1, and the width of the notch is K2, so that 0.1K1 is equal to or less than K2 is equal to or less than 0.5K 1.

As an alternative to the current collecting member, the notch is flush with the body portion at the second end of the body portion.

As an alternative to the current collecting member, the main body portion is provided with a reinforcing rib.

As an alternative to the current collecting member, the reinforcing rib includes a first rib body extending in the first direction.

As an alternative of the current collecting member, the reinforcing rib further includes a second rib body extending in the second direction, and one end of the first rib body is connected to the second rib body.

As an alternative to the current collecting member, the second rib is located at the first end of the main body portion.

As an alternative to the current collecting member, the tab connection is located between the first rib and the cutout.

As an alternative to the current collecting member, the first rib is provided near the fourth end.

As an alternative to the current collecting member, the current collecting member further includes a clamping portion integrally formed at the fourth end of the body portion.

In a second aspect, an electrode assembly is provided, which includes a battery cell unit, a cover plate unit and the current collecting member as described in any one of the above aspects, wherein the battery cell unit includes a tab, the cover plate unit includes a post, the tab is connected to the main body, and the post is connected to the connecting portion.

In a third aspect, a battery is provided, comprising an electrode assembly as described above.

Compared with the prior art, the beneficial effects of the utility model are that:

the utility model discloses a mass flow component, electrode subassembly and battery sets up the breach through one side at main part width direction for utmost point ear accessible breach is connected with utmost point ear connecting portion around locating the main part one side that electrode subassembly is kept away from, compares in prior art, can reduce the mass flow component and occupy the battery inner space, and then is favorable to dwindling the battery volume, satisfies the user demand.

Drawings

Fig. 1 is a first schematic structural diagram of a current collecting member according to an embodiment of the present invention;

fig. 2 is a second schematic structural view of a current collecting member according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating an assembly relationship between the current collecting member, the electrode assembly and the assembly fixture according to an embodiment of the present invention.

Reference numerals are as follows:

10. an electrode assembly; 20. a tab; 30. assembling a tool;

1. a main body portion; 11. a tab connecting part; 12. a first end; 13. a second end; 14. a third end; 15. a fourth end; 2. a connecting portion; 3. a notch; 4. reinforcing ribs; 41. a first rib body; 42. a second rib body; 5. a clamping portion.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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 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, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description of the present invention and simplification of description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; either mechanically or electrically. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1 to 3, the present embodiment provides a current collecting member including a body portion 1 and a connecting portion 2, the body portion 1 being provided with a tab connecting portion 11; the main body portion 1 has a first end 12 and a second end 13 opposite in a first direction; the connecting part 2 is connected to the first end 12 of the main body part 1; the main body part 1 is also provided with a third end 14 and a fourth end 15 which are opposite along a second direction, the third end 14 is provided with a notch 3, and the tab connecting part 11 is positioned at the third end 14; the second direction is perpendicular to the first direction. It is understood that the first direction is a longitudinal direction of the main body 1, and the second direction is a width direction of the main body 1.

By arranging the notch 3 on one side of the width direction of the main body part 1, the tab 20 can be connected with the tab connection part 11 by winding the notch 3 on one side of the main body part 1 far away from the electrode assembly 10, compared with the prior art, the occupied space of the battery by the current collecting component can be reduced, the size of the battery can be reduced, and the requirements of users can be met.

In one embodiment, along the first direction, the length of the notch 3 is L2 and the length of L1 of the main body portion 1 is 0.1L1 ≦ L2 ≦ 0.9L 1. Illustratively, L2 may be, but is not limited to, within the range of an interval of any two of 0.1L1, 0.2L1, 0.3L1, 0.4L1, 0.5L1, 0.6L1, 0.7L1, 0.8L1, 0.9L 1. Optionally, the width of the main body portion 1 is K1, the width of the notch 3 is K2, and 0.1K1 ≦ K2 ≦ 0.5K 1. Illustratively, K2 may be, but is not limited to, within the range of an interval of any two of 0.1K1, 0.2K1, 0.3K1, 0.4K1, 0.5K 1. The notch 3 is arranged to wind the tab 20 around the side of the main body 1 away from the electrode assembly 10 through the notch 3, so as to reduce the occupation of the current collecting member in the internal space of the battery, and the strength of the main body 1 is not affected.

Further, at the second end 13 of the body 1, the notch 3 is flush with the body 1. In other words, the width of the first end 12 of the main body 1 is a normal width, and the width of the second end 13 of the main body 1 is smaller than the width of the first end 12, so that the connection portion between the main body 1 and the connecting portion 2 has sufficient strength, and the current collecting member is prevented from being deformed.

In one embodiment, the main body 1 is provided with ribs 4 to increase the strength of the main body 1 and avoid deformation.

In one embodiment, the reinforcing bead 4 includes a first bead body 41, and the first bead body 41 extends in a first direction. Further, the reinforcing rib 4 further includes a second rib body 42, the second rib body 42 extends along the second direction, and one end of the first rib body 41 is connected to the second rib body 42. On the basis of not influencing the connection of the tab 20 and the main body 1, the strength of the main body 1 is increased from two directions by the first rib 41 and the second rib 42, and the strength increase range of the main body 1 is improved.

In an embodiment, the second rib 42 is located at the first end 12 of the main body 1 to increase the strength of the connection between the main body 1 and the connecting portion 2 and avoid deformation.

In one embodiment, the tab connecting portion 11 is located between the first rib 41 and the notch 3, so as to avoid the first rib 41 from being disposed to interfere with the connection of the tab 20 with the main body 1. In the present embodiment, the tab connecting portion 11 is a flat surface on the side of the body portion 1 away from the electrode assembly 10.

In one embodiment, the first rib 41 is disposed near the fourth end 15 to reserve sufficient space for the tab connection portion 11, so as to ensure the connection stability between the tab connection portion 11 and the tab 20.

In an embodiment, the current collecting member further comprises a clamping portion 5, the clamping portion 5 being integrally formed at the fourth end 15 of the body portion 1. When the battery is assembled, the clamping part 5 can be clamped by the assembling tool 30 to fix the current collecting component, so that the connection stability of the tab 20 and the current collecting component is ensured. The current collecting member can further reduce the occupation of the battery internal space, compared to the form in which the clip portion 5 is provided at the second end 13 of the main body portion 1.

The embodiment further provides an electrode assembly 10, which includes a battery cell unit, a cover plate unit and the current collecting member as described above, wherein the battery cell unit includes a tab 20, the cover plate unit includes a pole, the tab 20 is connected to the main body portion 1, and the pole is connected to the connecting portion 2. By applying the above current collecting member, the same advantageous effects as the above current collecting member are obtained.

The present embodiment also provides a battery including the electrode assembly 10 as described above. By applying the above electrode assembly 10, the same advantageous effects as the above electrode assembly 10 are obtained.

It should be noted that the foregoing is only a preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail with reference to the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the scope of the present invention.

Claims

1. A current collecting member comprising:

a main body part (1), wherein the main body part (1) is provided with a tab connecting part (11); the main body part (1) has a first end (12) and a second end (13) opposite to each other along a first direction;

a connecting portion (2) connected to the first end (12) of the main body portion (1);

it is characterized in that the preparation method is characterized in that,

the main body part (1) is also provided with a third end (14) and a fourth end (15) which are opposite along a second direction, the third end (14) is provided with a notch (3), and the lug connecting part (11) is positioned at the third end (14); the second direction is perpendicular to the first direction.

2. Current collecting member according to claim 1, characterized in that along the first direction the length of the main part (1) at L1, the length of the notch (3) at L2, 0.1L1 ≦ L2 ≦ 0.9L 1.

3. Current collecting member according to claim 2, characterized in that the width of the body part (1) in the second direction is K1, the width of the notch (3) is K2, 0.1K1 ≦ K2 ≦ 0.5K 1.

4. A current collecting member according to claim 3, characterised in that the notch (3) is flush with the body part (1) at the second end (13) of the body part (1).

5. Current collecting member according to claim 1, characterized in that the body part (1) is provided with reinforcing ribs (4).

6. -current collecting member according to claim 5, characterised in that the reinforcing bar (4) comprises a first rib (41), the first rib (41) extending in the first direction.

7. -current collecting member according to claim 6, characterised in that the reinforcing bar (4) also comprises a second rib (42), the second rib (42) extending in the second direction and that one end of the first rib (41) is connected with the second rib (42).

8. Current collecting member according to claim 7, characterized in that the second rib (42) is located at the first end (12) of the body part (1).

9. The current collecting member according to claim 6, characterized in that the tab connection (11) is located between the first rib (41) and the notch (3).

10. Current collecting member according to claim 6, characterized in that the first rib (41) is arranged close to the fourth end (15).

11. Current collecting member according to claim 1, characterized in that it further comprises a clamping portion (5), said clamping portion (5) being integrally formed to said fourth end (15) of said body portion (1).

12. An electrode assembly, characterized by comprising a cell unit including a tab (20), a cover unit including a pole, and the current collecting member of any one of claims 1 to 11, the tab (20) being connected to the main body portion (1), and the pole being connected to the connecting portion (2).

13. A battery comprising an electrode assembly (10) according to claim 12.