CN218827658U - Battery core cover plate assembly, battery core, battery pack and vehicle - Google Patents

Abstract

The present disclosure relates to a battery core cover plate assembly, a battery core, a battery pack and a vehicle, including: a cover plate having a first centerline and opposing first and second sides; the lead-out sheet is arranged on the second side, is provided with a connecting hole and comprises a first part and a second part which are connected, the first part extends in parallel with the length direction of the cover plate, the second part extends in parallel with the cover plate and is vertical to the extending direction of the first part, and the connecting hole is formed in the first part and the second part; the first part is provided with a second central line, the first central line and the second central line both extend in parallel to the length direction of the cover plate, and an offset distance is arranged between the first central line and the second central line. Through the technical scheme, the length of the tab can be shortened, and the assembly of the cover plate and the battery cell is facilitated.

Description

Battery core cover plate assembly, battery core, battery pack and vehicle

Technical Field

The present disclosure relates to the field of battery technologies, and in particular, to a cell cover plate assembly, a cell, a battery pack, and a vehicle.

Background

In the electric core, a pole column and a lead-out piece are arranged on the cover plate, and a pole ear of the electric core is electrically connected with the pole column through the lead-out piece so as to output electric energy in the electric core to the outside.

In the related art, the cover plate 1 has a structure as shown in fig. 1, wherein the cover plate 1 has a first center line a, the tab 2 has an axisymmetric structure (the center line of the tab 2 coincides with the first center line a), and as shown in fig. 2, the tab 4 needs to be welded and fixed to the tab 2, and in order to weld the tab 4 and the tab 2 and stably connect them, the length of the tab 4 needs to be ensured to cover the center line of the tab 2 and exceed the center line of the tab 2.

During welding, the welding position (c in fig. 2) of the tab 4 and the lead-out piece 2 is usually located at the central line position of the lead-out piece 2, that is, the position of the first central line a, but the length of the welding position of the tab 4 and the lead-out piece 2 from the edge of the cover plate 1 is obviously increased, if the width of the cover plate 1 is larger, the distance is also larger, so that the length of the tab 4 is increased, the increase of the length of the tab 4 also increases the material consumption of the tab 4, and the installation between the cover plate 1 and the battery core is also affected by the longer tab 4.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a battery core apron subassembly, electric core, battery package and vehicle can shorten the length of utmost point ear to be favorable to the equipment of apron and electric core.

In order to achieve the above object, the present disclosure provides a cell cover plate assembly, including: a cover plate having a first centerline and opposing first and second sides; and a lead-out piece provided at the second side, the lead-out piece being provided with a connection hole and including a first portion and a second portion connected, the first portion extending parallel to a length direction of the cap plate, the second portion extending parallel to the cap plate and perpendicular to an extending direction of the first portion, the connection hole being formed at the first portion and the second portion; the first portion is provided with a second central line, the first central line and the second central line both extend in parallel to the length direction of the cover plate, and an offset distance is arranged between the first central line and the second central line.

Optionally, the first portion is configured as an elongate sheet-like structure and the second portion is attached at an intermediate position of the first portion.

Optionally, the second portion comprises a circular arc edge, and a center of the circular arc edge is collinear with a center of the connecting hole.

Optionally, a side of the second portion remote from the first portion is provided with a plane, which is parallel to the second centre line.

Optionally, the cover plate is provided with a receiving groove recessed from the second side toward the first side and for seating the lead-out piece.

Optionally, the connection hole is configured as a counterbore.

Optionally, the battery core cover plate assembly further comprises a pole column, the pole column penetrates through the connecting hole and is fixedly connected to the connecting hole, the cover plate is provided with a mounting through hole, and the pole column is mounted in the mounting through hole.

Optionally, the pole is riveted with the lead-out piece and the cover plate.

On the basis of the technical scheme, the electric core comprises a pole core and a pole lug, the pole core is electrically connected with the pole lug, the electric core further comprises the electric core cover plate assembly, and the pole lug is welded with the first part.

On the basis of the technical scheme, the disclosure further provides a battery pack which comprises the battery core.

On the basis of the technical scheme, the disclosure further provides a vehicle, which comprises the battery core or the battery pack.

Through the technical scheme, when needs are at electric core last installation apron, the utmost point ear that extends earlier from electric core welds with the piece of drawing forth of this disclosure, utmost point ear welding is in the second central line position department of first part, form offset distance between second central line and the first central line, compare in first central line, the second central line is more close to the edge of apron, consequently, utmost point ear does not need too much extension can cover and exceed the second central line, the length of utmost point ear only need cover the second central line just welding that can be smooth on first part, accomplish utmost point ear and draw forth the welding between the piece. Therefore, adopt this disclosed electric core apron subassembly, can shorten and draw out the length of the required utmost point ear of piece welding, save the quantity of utmost point ear material to the length of utmost point ear is shorter also to be favorable to buckling at apron and electric core assembling process, is favorable to the equipment of apron and electric core.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 is a schematic structural view of a cell cover plate assembly in the related art;

fig. 2 is a schematic structural diagram of a battery cell in the related art, and is intended to illustrate a situation when a lead tab is welded to a tab when a cover plate is placed in a vertical direction;

fig. 3 is a schematic structural diagram of a cell cover plate assembly provided in an embodiment of the present disclosure;

fig. 4 is a schematic structural diagram of a lead-out sheet provided by an embodiment of the disclosure;

fig. 5 is a schematic structural diagram of a battery cell provided in an embodiment of the present disclosure, and is intended to illustrate a situation when a lead tab and a tab are welded when a cover plate is placed in a vertical direction.

Description of the reference numerals

1-cover plate; 11-mounting a through hole; 12-accommodating grooves; 2-leading out a sheet; 21-a first part; 22-a second part; 221-circular arc edge; 222-plane; 23-a connection hole; 3-pole core; 4-pole ear;

a-a first centerline; b-the second centre line.

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, unless stated to the contrary, "inner and outer" are "inner and outer" with respect to the profile of the corresponding component itself, and "distal and proximal" refer to "distal and proximal" as compared to a comparative reference. Furthermore, the use of terms such as "first," "second," and the like, in this disclosure is intended to distinguish one element from another, without necessarily requiring order or importance. In the following description, when referring to the figures, the same reference numbers in different figures denote the same or similar elements, unless otherwise explained. The foregoing definitions are provided to illustrate and explain the present disclosure and should not be construed to limit the present disclosure.

According to a specific embodiment of the present disclosure, referring to fig. 3 to 4, there is provided a cell cover plate assembly including: the cover plate comprises a cover plate 1, wherein the cover plate 1 is provided with a first central line a and a first side and a second side which are opposite; and a lead-out sheet 2, the lead-out sheet 2 being disposed at the second side, the lead-out sheet 2 being provided with a connection hole 23 and including a first portion 21 and a second portion 22 connected, the first portion 21 extending parallel to the length direction of the cap plate 1, the second portion 22 extending parallel to the cap plate 1 and perpendicular to the extending direction of the first portion 21, the connection hole 23 being formed on the first portion 21 and the second portion 22; the first portion 21 has a second center line b, the first center line a and the second center line b both extend parallel to the length direction of the cover plate 1, and an offset distance is provided between the first center line a and the second center line b.

Through the technical scheme, when need install apron 1 on electric core, the utmost point ear 4 that extends from electric core welds with the piece 2 of drawing forth of this disclosure earlier, utmost point ear 4 welds in second central line b position department of first part 21, form offset distance between second central line b and the first central line a, compare in first central line a, second central line b is more close to the edge of apron 1, consequently, utmost point ear 4 need not too much extension can cover and exceed second central line b, the welding that the length of utmost point ear 4 just can be smooth need to cover second central line b on first part 21, accomplish utmost point ear 4 and draw forth the welding between the piece 2. Therefore, the battery core cover plate 1 assembly can shorten the length of the tab 4 required by welding the leading-out piece 2, save the material consumption of the tab 4 and is beneficial to the assembly of the cover plate 1 and a battery core.

As shown in fig. 3 and 4, the "first side" is a side of the cover plate 1 away from the pole core 3 after installation, i.e., an outer side of the cover plate 1 after installation, and the "second side" is a side of the cover plate 1 close to the pole core 3 after installation, i.e., an inner side of the cover plate 1 after installation. The cover plate 1 has a length, the length direction of the cover plate 1 is the same as the length direction of a first central line a, the first central line a is positioned at the middle position of the cover plate 1 in the width direction, the installation through hole 11 is positioned at the center of the cover plate 1, and the first central line a and the installation through hole 11 are superposed with each other in parallel with the central line of the cover plate 1 in the length direction.

Referring to fig. 3 and 4, the first portion 21 has a length, and a length direction of the first portion 21 is parallel to a length direction of the first center line a, the second center line b is located at a middle position in a width direction of the first portion 21, and the second portion 22 is convexly provided toward one side of the length direction of the first portion 21, and a protruding direction of the second portion 22 is perpendicular to the length direction of the first portion 21. The lead-out sheet 2 of the present disclosure is a sheet structure, so that the upper surface and the lower surface of the first portion 21 are distributed to be coplanar with the upper surface and the lower surface of the second portion 22, the plate surface of the cover plate 1 of the present disclosure is a planar side wall of the cover plate, and the first portion 21 and the second portion 22 are both parallel to the plate surface of the cover plate 1, which is intended to indicate that the first portion 21 and the second portion 22 form the lead-out sheet 2 of the sheet structure. The connection hole 23 is partially located on the first portion 21 and the other portion is located on the second portion 22, and the first center line a is also a center line of the connection hole 23. The offset distance described in the present disclosure is the distance between the first centerline a and the second centerline b in fig. 3.

To accommodate assembly, in the particular embodiment provided by the present disclosure, and with reference to fig. 4, the first portion 21 may be configured as an elongated sheet-like structure, with the second portion 22 attached at an intermediate location of the first portion 21. Through the design mode, the occupied space of the first part 21 of the sheet structure is small, the internal space of the cover plate 1 can be saved, and the cover plate 1 is convenient to connect with a battery cell. Because the tab 4 and the second part 22 are not welded, the position of the second part 22 is the weak point of the connection between the tab 4 and the lead-out piece 2, so that the second part 22 is arranged at the middle position of the first part 21, the welding points of the tab 4 and the first part 21 are arranged on both sides of the second part 22, the possibility of cracking on one side after the tab 4 is welded with the lead-out piece 2 is reduced, and the connection between the tab 4 and the lead-out piece 2 is more stable. The first portion 21 may be a rectangular sheet-like structure with four corners being arc-shaped rounded corners, and the second portion 22 is located at a middle position in the length direction of the first portion 21. In other embodiments, the first portion 21 may be configured as an oval structure.

In the specific embodiment provided by the present disclosure, referring to fig. 4, the second portion 22 may include a circular arc edge 221, and a center of the circular arc edge 221 is collinear with a center of the connection hole 23. Through the design mode, the second part 22 adopts the arc edge 221 structure, so that the space occupied by the second part 22 can be saved, and the material consumption of the second part 22 in the lead-out sheet 2 can be further reduced. The arc edge 221 is a structural edge of the second portion 22 protruding out of the first portion 21. In other embodiments, second portion 22 may include square edges or triangular edges, as the present disclosure is not particularly limited in this regard.

In the specific embodiment provided by the present disclosure, referring to fig. 4, a side of the second portion 22 away from the first portion 21 may be provided with a plane 222, and the plane 222 is parallel to the second center line b. By the above design, the structure of the plane 222 can save materials and avoid the interference of the second portion 22 with other structures. In other embodiments, the above-mentioned structure of the plane 222 may not be provided, and the disclosure does not specifically limit this.

To facilitate the placement of the lead tab 2 on the cover plate 1, in the specific embodiment provided by the present disclosure, referring to fig. 3 and 4, the cover plate 1 is provided with a receiving groove 12, the receiving groove 12 being recessed from the second side toward the first side and being for the placement of the lead tab 2. Through above-mentioned design, can make and draw piece 2 embedding holding tank 12 in and set up, reduce the thickness of electric core apron subassembly, save the occupation space of whole electric core apron subassembly, be convenient for apron 1 and electric core install. Wherein, holding tank 12 is seted up on the inside wall of apron 1, namely on utmost point ear 4 and draw piece 2 installation back shroud 1 to be close to the lateral wall of utmost point core 3, holding tank 12's structure with draw piece 2 cooperation, after drawing piece 2 and settle in holding tank 12, holding tank 12's inner wall can carry on spacingly drawing piece 2, fixed relative position who draws piece 2 and holding tank 12.

In order to facilitate the derivation of current, in the specific embodiment provided in this disclosure, referring to fig. 3 and fig. 4, the cell cover plate assembly further includes a pole, the pole is inserted into and fixedly connected to the connection hole 23, the cover plate 1 is provided with an installation through hole 11, and the pole is installed in the installation through hole 11. Through above-mentioned design, utmost point post stretches out to the apron 1 outside from installation through-hole 11, is convenient for outwards conduct the electric current in the electric core through utmost point post. Wherein, the connection hole 23 is communicated with the installation through hole 11 and the circle center is collinear, and the pole (not marked in the drawing) is arranged and fixed in the connection hole 23 and the installation through hole 11.

In the specific embodiment provided by the present disclosure, referring to fig. 3 and 4, the connection hole 23 is configured as a counterbore. Through above-mentioned design, utmost point post wears to establish in connecting hole 23, when through riveted mode with utmost point post with draw forth piece 2 fixed, utmost point post tip can expand because of pressing the riveting, the reaming part of counter bore holds the expansion part of utmost point post, make that utmost point post can be good with draw forth piece 2 riveting fixed. Wherein the counter-bored portion of the connection hole 23 is located at the second side, i.e., the side of the cap plate 1 adjacent to the pole piece 3 after installation.

In other embodiments, the tab 2 may be welded or bonded to the cover plate 1, and in the specific embodiment provided by the present disclosure, the terminal post is riveted to the tab 2 and the cover plate 1 as shown in fig. 3 and 4. Through above-mentioned design, utmost point post one end is riveted with apron 1, and the other end with draw forth piece 2 riveting, draw forth piece 2 and apron 1 through utmost point post reciprocal anchorage, realized promptly utmost point post and draw forth piece 2 and utmost point post and apron 1 within a definite time fixed, also accomplished to draw forth piece 2 and apron 1 between fixed, make this disclosed electric core apron subassembly integration degree higher. Wherein, the both ends of utmost point post are all fixed with apron 1 and lead out piece 2 respectively through the mode of riveting.

On the basis of the above technical scheme, referring to fig. 5, the present disclosure further provides an electric core, which includes a pole core 3 and a pole lug 4, where the pole core 3 is electrically connected to the pole lug 4, the electric core further includes the above electric core cover plate assembly, and the pole lug 4 is welded to the first portion 21. Through the design mode, when the cover plate 1 and the pole core 3 are assembled, the length of the pole lug 4 can be shortened, the material consumption of the pole lug 4 is reduced, and the installation of the cover plate 1 is facilitated. One end of the tab 4 is electrically connected to the pole core 3, the other end extends to cover the second central line b, and a welding position (d in fig. 5) of the tab 4 and the lead-out piece 2 is located at the second central line b.

On the basis of the technical scheme, the battery pack comprises the battery cell. Beneficial effect of battery package is unanimous with the beneficial effect of above-mentioned electric core in this disclosure, and the repeated description is omitted here.

On the basis of the technical scheme, the disclosure further provides a vehicle, which comprises the battery core or the battery pack. The beneficial effect of vehicle is unanimous with the beneficial effect of above-mentioned electricity core and battery package in this disclosure, and is no longer repeated here.

The implementation principle of the disclosure is that, when the cover plates 1 are required to be installed at two ends of the battery core, the tab 4 extending from the electrode core 3 is welded and fixed with the lead-out piece 2, and compared with the welding position (c in fig. 2) of the tab 4 and the lead-out piece 2 in the related art, the tab 4 and the lead-out piece 2 are located at the first central line a of the cover plate 1, the battery core cover plate assembly disclosed herein is provided with the offset lead-out piece 2, so that the welding position (d in fig. 5) of the tab 4 and the lead-out piece 2 is located at the second central line b, and the second central line b is closer to the edge of the cover plate 1 than the first central line a, and the tab 4 can be stably welded with the lead-out piece 2 only by extending and covering the second central line b, thereby shortening the length of the tab 4, reducing the material consumption of the tab 4, and being beneficial to the installation and connection of the cover plate 1 and the battery core.

The preferred embodiments of the present disclosure are described in detail above with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details in the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure.

It should be noted that, in the above embodiments, the various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations will not be further described in the present disclosure.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims (11)

1. A cell cover plate assembly, comprising:

a cover plate having a first centerline and opposing first and second sides; and

a lead-out sheet provided at the second side, the lead-out sheet being provided with a connection hole and including a first portion and a second portion connected, the first portion extending parallel to a length direction of the cap plate, the second portion extending parallel to the cap plate and perpendicular to an extending direction of the first portion, the connection hole being formed on the first portion and the second portion;

the first portion is provided with a second central line, the first central line and the second central line both extend in parallel to the length direction of the cover plate, and an offset distance is arranged between the first central line and the second central line.

2. The cell cover plate assembly of claim 1, wherein the first portion is configured as an elongated sheet-like structure and the second portion is attached at an intermediate location of the first portion.

3. The cell cover plate assembly of claim 1, wherein the second portion comprises a circular arc edge, and a center of the circular arc edge is collinear with a center of the connection hole.

4. The cell cover plate assembly of claim 3, wherein a side of the second portion remote from the first portion is provided with a plane, the plane being parallel to the second centerline.

5. The cell cover plate assembly of claim 1, wherein the cover plate is provided with a receiving groove recessed from the second side toward the first side and for seating the lead tab.

6. The cell cover plate assembly of claim 1, wherein the connection holes are configured as counter bores.

7. The electrical core cover plate assembly of claim 1, further comprising a terminal post, the terminal post is inserted into and fixedly connected to the connecting hole, the cover plate is provided with a mounting through hole, and the terminal post is mounted in the mounting through hole.

8. The cell cover plate assembly of claim 7, wherein the terminal post is riveted to the tab and the cover plate.

9. An electric core, comprising a pole core and a pole lug, wherein the pole core is electrically connected with the pole lug, and the electric core further comprises the battery cell cover plate component according to any one of claims 1 to 8, and the pole lug is welded with the first part.

10. A battery pack comprising the cells of claim 9.

11. A vehicle comprising the cell of claim 9, or the battery pack of claim 10.

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