CN218300164U

CN218300164U - Battery cover plate and battery

Info

Publication number: CN218300164U
Application number: CN202222596600.1U
Authority: CN
Inventors: 李峥; 王家兴; 冯玉川; 陈凯; 何泓材
Original assignee: Suzhou Qingtao New Energy S&T Co Ltd
Current assignee: Suzhou Qingtao New Energy S&T Co Ltd
Priority date: 2022-09-29
Filing date: 2022-09-29
Publication date: 2023-01-13
Anticipated expiration: 2032-09-29

Abstract

The utility model belongs to the technical field of the battery structure, a battery cover plate and battery is disclosed. The battery cover plate comprises a cover plate body, an adapter piece and an insulating piece. The adapter is equipped with utmost point ear switching piece along at least one side in the both sides of first direction, the adapter has first end and the second end along the second direction, the second direction is perpendicular with the first direction, the insulating part presss from both sides and locates between the first end of apron body and adapter, the insulating part is equipped with first clamping part, the second end of adapter is equipped with the second clamping part, first clamping part and second clamping part all are located the adapter and deviate from one side of battery electricity core. When the antipodal ear switching piece is bent, the first clamping part and the second clamping part can be respectively clamped by the aid of the fixing clamp, so that the connecting piece is supported and fixed, the switching piece cannot deform due to stress when the antipodal ear switching piece is bent, and damage to the battery cell due to deformation of the switching piece is avoided.

Description

Battery cover plate and battery

Technical Field

The utility model relates to a battery structure technical field especially relates to a battery cover plate and battery.

Background

With the development of society and scientific technology, the square-casing battery is widely used to power high-power devices, such as electric vehicles, etc.

The square-shell battery generally comprises a cover plate, a shell and an electric core contained in the shell, the shell and the cover plate form a sealed shell through welding, and the cover plate mainly comprises a positive pole post, a negative pole post, an explosion-proof valve, a liquid injection hole, an adapter plate and a plastic layer for insulation.

In order to further improve the energy density of the square-shell battery, the ear of the adapter sheet needs to be bent to reduce the volume of the adapter sheet occupying the interior of the square-shell battery, so that the energy density is improved. However, when the cell is bent, the adapter plate is deformed under a large acting force, so that the cell is damaged.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a battery cover plate and battery can avoid the adaptor to take place to warp when the utmost point ear switching piece of buckling.

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

in one aspect, there is provided a battery cover plate including:

a cover plate body;

insulating part and adaptor, at least one side in the adaptor along the both sides of first direction is equipped with utmost point ear switching piece, the adaptor has first end and the second end along the second direction, the second direction with first direction is perpendicular, the insulating part presss from both sides and locates the apron body with the adaptor between the first end, the insulating part is equipped with first clamping part, the adaptor the second end is equipped with second clamping part, first clamping part with second clamping part all is located one side that the adaptor deviates from battery electricity core.

Optionally, one end of the first clamping portion is connected to the insulating member, and the other end of the first clamping portion extends from the first end to the second end along the second direction;

the second clamping part is of an L-shaped structure, one end of the L-shaped structure of the second clamping part is connected to the end of the adapter, and the other end of the L-shaped structure of the second clamping part extends from the second end to the first end along the second direction.

Optionally, the adaptor includes a clamping plate and a bending plate, the insulating member is clamped between the cover plate body and the clamping plate, one end of the bending plate is connected with the clamping plate to form an L-shaped structure, and the other end of the bending plate is provided with the second clamping portion.

Optionally, the second clamping portion includes a connecting portion and a fixing portion, one end of the connecting portion is connected to the bending plate, the other end of the connecting portion is connected to the fixing portion, and the other end of the fixing portion extends from the second end to the first end along the second direction.

Optionally, the length h1 of the first clamping part along the second direction is 3mm-10mm;

the thickness d1 of the first clamping part along the third direction is 0.5mm-2mm;

the length h2 of the fixed part along the second direction is 2mm-5mm;

the thickness d2 of the fixed part along the third direction is 0.5mm-2mm; and/or the thickness d3 of the connecting part along the second direction is 0.5mm-2mm; the first direction, the second direction and the third direction are perpendicular to each other.

Optionally, a gap is formed between the first clamping portion and the bending plate.

Optionally, the two sides of the insulating member along the first direction are both provided with a limiting portion, and the two sides of the clamping plate are respectively abutted to the limiting portions.

Optionally, a projection of the adaptor along the second direction is within a range of a projection of the cover plate body along the second direction, and a projection of the insulator along the second direction is within a range of a projection of the cover plate body along the second direction.

Optionally, a bending through groove extending along the second direction is formed at the joint of the tab adaptor piece and the adaptor piece.

In another aspect, a battery is provided, which includes the battery cover plate as described in any one of the above.

The beneficial effects of the utility model reside in that:

the utility model provides a battery cover plate and battery, including apron body, insulating part and adaptor. At least one side of adaptor in the both sides along first direction is equipped with utmost point ear adaptor piece, the insulating part is equipped with first clamping part, the second end of adaptor is equipped with the second clamping part, when the operation of bending utmost point ear adaptor piece, first clamping part and second clamping part are cliied respectively to usable mounting fixture, thereby play support and fixed effect to the adaptor, make the adaptor when utmost point ear adaptor piece is buckled, can not take place to warp because of the atress, thereby avoided causing the damage to electric core because the adaptor warp.

Drawings

Fig. 1 is a three-dimensional isometric view of a battery cover plate of the present invention;

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

fig. 3 is a two-dimensional plan view of the battery cover plate of the present invention;

fig. 4 is an enlarged view of a portion B in fig. 3.

In the figure:

1. a cover plate body;

2. an insulating member; 21. a first clamping portion; 22. a limiting part;

3. an adaptor; 31. a tab adaptor sheet; 32. a second clamping portion; 321. a connecting portion; 322. a fixed part; 33. a clamping plate; 34. bending the plate; 35. and a bending through groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected", "connected" and "fixed" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. 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.

In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used based on the orientations and positional relationships shown in the drawings, and are only for convenience of description and simplification of operation, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

In order to avoid deformation of the adaptor 3 due to stress when the tab adaptor piece 31 is bent, the present embodiment provides a battery cover plate and a battery, and the battery includes the battery cover plate.

As shown in fig. 1 to 4, the battery cover plate includes a cover plate body 1, an insulating member 2, and an adaptor member 3. Adaptor 3 is equipped with utmost point ear adaptor piece 31 along at least one side in the both sides of first direction, adaptor 3 has first end and the second end along the second direction, the second direction is perpendicular with the first direction, insulator 2 presss from both sides and locates between the first end of apron body 1 and adaptor 3, insulator 2 is equipped with first clamping part 21, adaptor 3's second end is equipped with second clamping part 32, first clamping part 21 and second clamping part 32 all are located one side that adaptor 3 deviates from battery electricity core. When the tab adaptor piece 31 is bent, the first clamping portion 21 and the second clamping portion 32 can be respectively clamped by the fixing clamp, so that the adaptor piece 3 is supported and fixed, and the adaptor piece 3 cannot deform due to stress when the tab adaptor piece 31 is bent, so that the electric core is prevented from being damaged due to deformation of the adaptor piece 3. Wherein adaptor 3 generally uses the comparatively soft aluminum sheet of material, and insulator 2 adopts rigid plastic, both can play insulating effect, can guarantee certain intensity again and resist the power that makes adaptor 3 warp.

Alternatively, one end of the first clamping portion 21 is connected to the insulating member 2, and the other end extends from the first end to the second end along the second direction; the second clamping portion 32 is an L-shaped structure, one end of the L-shaped structure of the second clamping portion 32 is connected to the end of the adaptor 3, and the other end extends from the second end to the first end along the second direction. Since the other end of the first clamping portion 21 extends from the first end to the second end along the second direction and the other end of the second clamping portion 32 extends from the second end to the first end along the second direction, the end of the first clamping portion 21 corresponds to the end of the second clamping portion 32, so that the first clamping portion 21 and the second clamping portion 32 can be clamped simultaneously by using only one fixing clamp, and the operation is simple and efficient.

Further, the adaptor 3 includes a clamping plate 33 and a bending plate 34, the insulating member 2 is clamped between the cover plate body 1 and the clamping plate 33, one end of the bending plate 34 is connected with the clamping plate 33 and forms an L-shaped structure, and the other end of the bending plate 34 is provided with a second clamping portion 32. By arranging the clamping plate 33 to clamp the insulating member 2 together with the cover plate body 1, the contact area between the clamping plate 33 and the insulating member 2 is increased, so that the insulating member 2 is clamped between the clamping plate 33 and the cover plate body 1 more firmly. In the present embodiment, two tab adapter sheets 31 are respectively disposed on two sides of the bending plate 34 along the first direction.

Further, the second clamping portion 32 includes a connecting portion 321 and a fixing portion 322, one end of the connecting portion 321 is connected to the bending plate 34, the other end of the connecting portion 321 is connected to the fixing portion 322, and the other end of the fixing portion 322 extends from the second end to the first end along the second direction. The second clamping portion 32 is L-shaped, so that the second clamping portion 32 can be conveniently clamped by the fixing clamp, and the fixing clamp can be prevented from interfering with the adaptor 3 due to too short distance. In the embodiment, the second clamping portion 32 is formed by bending the adaptor 3, so the thicknesses of the parts are the same.

Further, as shown in fig. 3 to 4, the length h1 of the first clamping portion 21 in the second direction is 3mm to 10mm, and illustratively, the length h1 of the first clamping portion 21 in the second direction may be any value between 3mm to 10mm, such as 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, and the like; the thickness d1 of the first clamping part 21 along the third direction is 0.5mm-2mm; illustratively, the thickness d1 of the first clamping portion 21 along the third direction may be any value between 0.5mm and 2mm, such as 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, etc.; through experimental verification, the device is arranged in such a way，Both ensuring that the first clamping portion 21 has sufficient length for clamping when the fixture clamps the first clamping portion 21, and ensuring that the first clamping portion 21 itself has sufficient strength for resisting deformation.

The length h2 of the fixing portion 322 along the second direction is 2mm-5mm, and illustratively, the length h2 of the fixing portion 322 along the second direction may be any value between 2mm-5mm, such as 2mm, 3mm, 4mm, 5mm, etc.; the thickness d2 of the fixing portion 322 along the third direction is 0.5mm-2mm, and exemplarily, the thickness d2 of the fixing portion 322 along the third direction may be any value between 0.5mm-2mm, such as 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, etc.; the thickness d3 of the connecting portion 321 along the second direction is 0.5mm-2mm, and exemplarily, the thickness d3 of the connecting portion 321 along the second direction may be any value between 0.5mm-2mm, such as 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2mm, etc.; the first direction, the second direction and the third direction are vertical to each other. Through experimental verification, by adopting the arrangement, when the fixing clamp clamps the fixing part 322, the fixing part 322 has enough length for clamping, and meanwhile, the fixing part 322 and the connecting part 321 have enough strength for resisting deformation.

Optionally, as shown in fig. 3, a gap is provided between the first clamping portion 21 and the bending plate 34. Through being equipped with the clearance between first clamping part 21 and the board 34 of bending, provide installation space for the mounting fixture to the mounting fixture presss from both sides tight first clamping part 21 of being convenient for, can not produce interference with adaptor 3.

Alternatively, as shown in fig. 1-2, both sides of the insulating member 2 along the first direction are provided with the limiting portions 22, and both sides of the clamping plate 33 abut against the limiting portions 22, respectively. The both sides of clamping plate 33 respectively with the spacing portion 22 butt of insulating part 2 both sides to avoid adaptor 3 to take place the dislocation along first direction, thereby influence subsequent installation. Wherein the length of the position-limiting part 22 in the second direction is greater than the thickness of the clamping plate 33 in the second direction in order to ensure the position-limiting effect.

Alternatively, as shown in fig. 3, a projection of the adaptor 3 in the second direction is within a range of a projection of the cover plate body 1 in the second direction, and a projection of the insulator 2 in the second direction is within a range of a projection of the cover plate body 1 in the second direction. When the cover plate is welded with the shell, the insulating part 2 and the adapter part 3 are both positioned in a shell cavity formed by the cover plate and the shell.

Optionally, as shown in fig. 2, a bent through groove 35 extending in the second direction is provided at the connection of the tab adaptor piece 31 and the adaptor piece 3. The bending through groove 35 is arranged, so that the connection area between the lug adapter piece 31 and the adapter piece is reduced, the lug adapter piece 31 is easier to bend, and the force applied to the adapter piece 3 due to the bending of the lug adapter piece 31 is reduced. In the present embodiment, the bending through slot 35 is a long through slot, but in other embodiments, it can be divided into a plurality of small through slots.

In actual operation, when the tab adaptor piece 31 needs to be bent, the fixing jig is used to clamp the first clamping portion 21 on the insulating member 2 and the second clamping portion 32 on the adaptor 3, respectively, so as to support and fix the adaptor 3. Then, when the tab adaptor piece 31 is bent, the insulating piece 2 is made of hard plastic and has certain hardness, so that the tab 3 can be well supported, and the adaptor piece 3 is prevented from deforming due to stress. After the tab adapter 31 is bent, the fixing clamp is disassembled.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. This need not be, nor should it be exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A battery cover plate, characterized in that the battery cover plate comprises:

a cover plate body (1);

insulating part (2) and adaptor (3), adaptor (3) are equipped with utmost point ear adaptor piece (31) along at least one side in the both sides of first direction, adaptor (3) have first end and the second end along the second direction, the second direction with the first direction is perpendicular, insulating part (2) press from both sides and locate apron body (1) with adaptor (3) between the first end, insulating part (2) are equipped with first clamping part (21), adaptor (3) the second end is equipped with second clamping part (32), first clamping part (21) with second clamping part (32) all are located adaptor (3) deviate from one side of battery electricity core.

2. The battery cap plate according to claim 1, wherein one end of the first clamping portion (21) is connected to the insulating member (2), and the other end extends from the first end to the second end in the second direction;

the second clamping part (32) is of an L-shaped structure, one end of the L-shaped structure of the second clamping part (32) is connected to the end of the adapter (3), and the other end of the L-shaped structure of the second clamping part extends from the second end to the first end along the second direction.

3. The battery cover plate according to claim 1, wherein the adaptor (3) comprises a clamping plate (33) and a bending plate (34), the insulating member (2) is clamped between the cover plate body (1) and the clamping plate (33), one end of the bending plate (34) is connected with the clamping plate (33) to form an L-shaped structure, and the other end of the bending plate (34) is provided with the second clamping portion (32).

4. The battery cover plate according to claim 3, wherein the second clamping portion (32) comprises a connecting portion (321) and a fixing portion (322), one end of the connecting portion (321) is connected to the bending plate (34), the other end of the connecting portion (321) is connected to the fixing portion (322), and the other end of the fixing portion (322) extends from the second end to the first end along the second direction.

5. The battery cap plate according to claim 4, wherein a length h1 of the first clamping portion (21) in the second direction is 3mm to 10mm;

the thickness d1 of the first clamping part (21) along the third direction is 0.5mm-2mm;

the length h2 of the fixing part (322) along the second direction is 2mm-5mm;

the thickness d2 of the fixing part (322) along the third direction is 0.5mm-2mm; and/or the thickness d3 of the connecting part (321) along the second direction is 0.5mm-2mm; the first direction, the second direction and the third direction are perpendicular to each other.

6. The battery cover plate according to claim 3, wherein a gap is provided between the first clamping portion (21) and the bent plate (34).

7. The battery cover plate according to claim 3, wherein a stopper portion (22) is provided on each of both sides of the insulator (2) in the first direction, and both sides of the clamping plate (33) abut against the stopper portions (22), respectively.

8. The battery cover plate according to claim 1, characterized in that the projection of the adapter (3) in the second direction is within the range of the projection of the cover plate body (1) in the second direction and the projection of the insulator (2) in the second direction is within the range of the projection of the cover plate body (1) in the second direction.

9. The battery cover plate according to claim 1, characterized in that the connection of the tab adaptor plate (31) to the adaptor piece (3) is provided with a bent through groove (35) extending in the second direction.

10. Battery, characterized in that it comprises a battery cover plate according to any of claims 1-9.