CN218926760U

CN218926760U - Side welding device for end cover of hard shell battery cell

Info

Publication number: CN218926760U
Application number: CN202223555962.2U
Authority: CN
Inventors: 宋永亮; 赵敬华; 黄启; 甄帅
Original assignee: Tianjin EV Energies Co Ltd
Current assignee: Tianjin EV Energies Co Ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-04-28
Anticipated expiration: 2032-12-29

Abstract

The utility model relates to the technical field of battery pack production, and particularly discloses a hard shell battery cell end cover side welding device, which comprises a supporting platform and a turnover mechanism, wherein the turnover mechanism comprises a bracket, a clamping assembly and a driver, the clamping assembly is used for enabling an end cover to be pressed at an opening of a core shell and enabling the opening of the core shell to face a first direction, the clamping assembly is rotationally arranged on the bracket around the first direction, the driver drives the clamping assembly to rotate, and the supporting platform drives the bracket to slide along a second direction or a third direction; the first direction, the second direction and the third direction are perpendicular to each other. The device can realize the continuous welding to end cover and core shell, and then has solved because the welding leakproofness that discontinuous welding led to is relatively poor, leak source appears easily, and the leakproofness is relatively poor and welded outward appearance effect is poor problem.

Description

Side welding device for end cover of hard shell battery cell

Technical Field

The utility model relates to the technical field of battery pack production, in particular to a side welding device for end covers of hard shell battery cells.

Background

The battery cell is generally composed of a steel core shell or an aluminum core shell and positive and negative electrode materials filled in the steel core shell or the aluminum core shell, and after the battery cell is manufactured, an end cover is sealed and welded with an opening of the core shell.

The existing manufacturing scheme is to compress the end cover, manually rotate the battery cell by 90 degrees after welding the side line of one side, and repeat the above actions until the four side lines are welded.

When four side lines of the end cover are welded according to the existing scheme, continuous welding cannot be achieved due to the fact that the four side lines are welded respectively, and further welding tightness at the positions of four corners of the end cover (namely the joint of the side lines) is poor, leakage points are prone to occurring, tightness is poor, and welded appearance effect is poor.

Disclosure of Invention

The utility model aims at: the side welding device for the hard shell battery cell end cover is provided, so that the problems that in the related art, four side lines are welded respectively, continuous welding cannot be realized, and further, the sealing performance is poor at the positions of four corners of the end cover, leakage points are easy to occur, the sealing performance is poor, and the welded appearance effect is poor are solved.

The utility model provides a hard shell battery cell end cover side welding device, which comprises a support platform and a turnover mechanism, wherein the turnover mechanism comprises a bracket, a clamping assembly and a driver, the clamping assembly is used for enabling an end cover to be pressed at an opening of a core shell and enabling the opening of the core shell to face a first direction, the clamping assembly is rotationally arranged on the bracket around the first direction, the driver drives the clamping assembly to rotate, and the support platform drives the bracket to slide along a second direction or a third direction;

the first direction, the second direction and the third direction are perpendicular to each other.

As the preferable technical scheme of the hard shell battery cell end cover side welding device, the clamping assembly comprises a rotating frame and a first clamping assembly, wherein the rotating frame is rotatably arranged on the bracket by taking the first direction as a rotating shaft, and the driver drives the rotating frame to rotate;

the rotating frame comprises a first fixed plate, the first fixed plate is perpendicular to the first direction, the first clamping assembly comprises a first clamping plate and a first clamping piece, the first clamping piece is arranged on the support in a sliding mode along the first direction, the first clamping plate is in running fit with the first clamping piece around the first direction, the first clamping plate is opposite to the first fixed plate at intervals, and the first clamping piece is used for enabling the first clamping plate to move towards the direction close to the first fixed plate.

As the preferred technical scheme of hard shell electric core end cover side welding device, the first clamping piece includes first slide and first snap-action clamp, first slide with support sliding fit, first clamping plate around first direction with first slide normal running fit, first snap-action clamp is fixed in the support and drive first slide has to be close to first fixed plate and keep away from two states of first fixed plate.

As a preferable technical scheme of the hard shell cell end cover side welding device, the rotating frame comprises a second fixing plate, and the second fixing plate is perpendicular to the second direction;

the clamping assembly further comprises a second clamping assembly, the second clamping assembly comprises a second clamping plate and a second clamping piece, the second clamping plate is arranged on the rotating frame in a sliding mode along the second direction and opposite to the second fixing plate, and the second clamping piece is used for enabling the second clamping plate to move towards the direction close to the second fixing plate.

As the preferred technical scheme of hard shell electric core end cover side welding device, the second clamping piece is a second quick clamp, the second quick clamp is fixedly arranged on the rotating frame and drives the second clamping plate to be in two states of approaching to the second fixing plate and keeping away from the second fixing plate.

As a preferable technical scheme of the hard shell cell end cover side welding device, the rotating frame comprises a third fixing plate, and the third fixing plate is perpendicular to the third direction;

the clamping assembly further comprises a third clamping assembly, the third clamping assembly comprises a third clamping plate and a third clamping piece, the third clamping plate is arranged on the rotating frame in a sliding mode along the third direction and opposite to the third fixing plate, and the third clamping piece is used for enabling the third clamping plate to move towards the direction close to the third fixing plate.

As the preferred technical scheme of hard shell electric core end cover side welding device, the third clamping piece is a third quick clamp, the third quick clamp is fixedly arranged on the rotating frame and drives the third clamping plate to be in two states of approaching to the third fixing plate and keeping away from the third fixing plate.

As the preferred technical scheme of hard shell electric core end cover side welding device, supporting platform includes workstation, first motion subassembly and second motion subassembly, first motion subassembly set up in the workstation and drive the second motion subassembly is followed the second direction removes, the second motion subassembly drive the support is followed the third direction removes.

As the preferred technical scheme of hard shell electric core end cover side welding device, supporting platform still includes the linear slide rail, the second motion subassembly still is provided with the linear slide way, the linear slide rail along the second direction set up in the workstation, the linear slide way with linear slide rail sliding fit.

As the preferable technical scheme of the hard shell battery cell end cover side welding device, the linear slide rail and the first motion assembly are arranged at intervals along the first direction.

The beneficial effects of the utility model are as follows:

the utility model provides a hard shell battery cell end cover side welding device, which comprises a supporting platform and a turnover mechanism, wherein the turnover mechanism comprises a bracket, a clamping assembly and a driver, the clamping assembly is used for enabling an end cover to be pressed at an opening of a core shell and enabling the opening of the core shell to face a first direction, the clamping assembly is rotationally arranged on the bracket around the first direction, the driver drives the clamping assembly to rotate, and the supporting platform drives the bracket to slide along a second direction or a third direction; the first direction, the second direction and the third direction are perpendicular to each other. When the gap between the end cover and the core shell is welded, the gap between the end cover and the core shell is positioned in a plane where the second direction and the third direction are positioned, so that the welding gun is opposite to the gap between the end cover and the core shell, and then the driver drives the clamping assembly to rotate, the supporting platform drives the support to move along the second direction and the third direction, so that the welding gun can continuously weld the gap between the end cover and the core shell, and the problems that the welding tightness is poor, leakage points are easy to occur, the sealing performance is poor and the welding appearance effect is poor due to discontinuous welding are avoided.

Drawings

Fig. 1 is a schematic structural diagram of a side welding device for end covers of hard-shell cells according to an embodiment of the utility model;

fig. 2 is a schematic structural diagram of a side welding device for end covers of hard-shell cells in an embodiment of the utility model;

fig. 3 is a schematic structural diagram of a side welding device for end covers of hard-shell cells according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a rotating frame according to an embodiment of the present utility model.

In the figure:

x, a first direction; y, second direction; z, third direction;

100. an end cap; 200. a core shell;

11. a work table; 12. a first motion assembly; 13. a second motion assembly; 14. a linear slide rail;

21. a bracket; 221. a rotating frame; 2211. a first fixing plate; 2212. a second fixing plate; 2213. a third fixing plate; 222. a first clamping assembly; 2221. a first clamping plate; 2222. a first slide plate; 2223. a first quick clamp; 223. a second clamping assembly; 2231. a second clamping plate; 2232. a second clamping member; 224. a third clamping assembly; 2241. a third clamping plate; 2242. a third clamping member; 23. a driver.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first location" and "second location" are two distinct locations and wherein the first feature is "above," "over" and "over" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is level above the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 4, the present embodiment provides a hard-shell battery cell end cover side welding device, which includes a support platform and a turnover mechanism, the turnover mechanism includes a bracket 21, a clamping assembly and a driver 23, the clamping assembly is used for pressing the end cover 100 at the opening of the core shell 200 and making the opening of the core shell 200 face to a first direction X, the clamping assembly is rotatably arranged on the bracket 21 around the first direction X, the driver 23 drives the clamping assembly to rotate, and the support platform drives the bracket 21 to slide along a second direction Y or a third direction Z; the first direction X, the second direction Y and the third direction Z are perpendicular to each other. When the gap between the end cover 100 and the core shell 200 is welded, the gap between the end cover 100 and the core shell 200 is positioned in a plane where the second direction Y and the third direction Z are positioned, so that a welding gun is opposite to the gap between the end cover 100 and the core shell 200, then the driver 23 drives the clamping assembly to rotate, and meanwhile, the supporting platform drives the bracket 21 to move along the second direction Y and the third direction Z, so that the welding gun can continuously weld the gap between the end cover 100 and the core shell 200, and the problems that the welding tightness is poor, leakage points are easy to occur, the sealing is poor and the welding appearance effect is poor due to discontinuous welding are avoided. The first direction X and the second direction Y are both in the horizontal plane, and the third direction Z is a direction vertical to the horizontal plane.

Alternatively, the clamping assembly includes a rotating frame 221 and a first clamping assembly 222, the rotating frame 221 is rotatably disposed on the bracket 21 with the first direction X as a rotation axis, and the driver 23 drives the rotating frame 221 to rotate; the rotating frame 221 includes a first fixed plate 2211, the first fixed plate 2211 is perpendicular to the first direction X, the first clamping assembly 222 includes a first clamping plate 2221 and a first clamping member, the first clamping member is slidably disposed on the bracket 21 along the first direction X, the first clamping plate 2221 is rotationally matched with the first clamping member around the first direction X, the first clamping plate 2221 is spaced from and opposite to the first fixed plate 2211, and the first clamping member is used for enabling the first clamping plate 2221 to move towards a direction close to the first fixed plate 2211. In this embodiment, the core housing 200 and the end cap 100 are respectively disposed between the first fixing plate 2211 and the first clamping plate 2221, and the first clamping member drives the first clamping plate 2221 to move in a direction approaching the first fixing plate 2211, so that the end cap 100 is pressed at the opening of the core housing 200. Since the rotating frame 221 is rotatably engaged with the bracket 21 in the first direction X, the first clamping plate 2221 is rotatably engaged with the first clamping member in the first direction X, and thus the driver 23 can drive the core case 200 and the end cap 100 to rotate about the first direction X.

Specifically, the first clamping member includes a first slide plate 2222 and a first quick clamp 2223, the first slide plate 2222 is in sliding engagement with the bracket 21, the first clamp plate 2221 is in rotational engagement with the first slide plate 2222 about the first direction X, the first quick clamp 2223 is fixed to the bracket 21 and drives the first slide plate 2222 to have two states toward and away from the first fixed plate 2211. In this embodiment, a sliding rail is disposed between the first sliding plate 2222 and the bracket 21, and a sliding groove is disposed between the other sliding plate and the bracket, and the sliding rail is slidably engaged with the sliding groove. The first quick clamp 2223 has two states, i.e., two states in which the first slide 2222 moves a distance toward the first fixed plate 2211 or the first slide 2222 moves a distance away from the first fixed plate 2211, specifically, the first quick clamp 2223 is a quick clamp, which is a prior art and will not be described herein.

Optionally, the turret 221 includes a second fixed plate 2212, the second fixed plate 2212 being perpendicular to the second direction Y; the clamping assembly further includes a second clamping assembly 223, where the second clamping assembly 223 includes a second clamping plate 2231 and a second clamping member 2232, the second clamping plate 2231 is slidably disposed on the rotating frame 221 along the second direction Y and opposite to the second fixed plate 2212, and the second clamping member 2232 is configured to move the second clamping plate 2231 in a direction approaching the second fixed plate 2212. To prevent the core case 200 and the end cap 100 between the first clamping plate 2221 and the first fixing plate 2211 from being separated from between the first clamping plate 2221 and the first fixing plate 2211, and further, second fixing plates 2212 and second clamping plates 2231 are provided at intervals along the second direction Y, the second fixing plates 2212 and the first fixing plates 2211 are fixedly coupled to each other, and the second clamping members 2232 drive the second clamping plates 2231 to move, thereby clamping the core case 200 along both sidewalls perpendicular to the second direction Y, and thus, the core case 200 can be prevented from moving along the second direction Y.

Optionally, the second clamping member 2232 is a second quick clamp, which is fixed to the rotating frame 221 and drives the second clamping plate 2231 to move toward the second fixing plate 2212 and away from the second fixing plate 2212. In this embodiment, the second quick clamp has two states, namely, two states in which the second clamping plate 2231 moves a distance toward the second fixing plate 2212 or in which the second clamping plate 2231 moves a distance away from the second fixing plate 2212, and in particular, the second quick clamp is a quick clamp, which is a prior art and will not be described herein.

Optionally, the turret 221 includes a third fixed plate 2213, the third fixed plate 2213 being perpendicular to the third direction Z; the third clamping assembly 224 includes a third clamping plate 2241 and a third clamping member 2242, the third clamping plate 2241 being slidably disposed on the turret 221 along the third direction Z and opposite the third fixed plate 2213, the third clamping member 2242 being configured to move the third clamping plate 2241 in a direction approaching the third fixed plate 2213. In this embodiment, to prevent the core case 200 from moving in the third direction Z, the third fixing plate 2213 and the third clamping plate 2241 clamp the core case 200 along two sidewalls perpendicular to the third direction Z. The first fixing plate 2211, the second fixing plate 2212 and the third fixing plate 2213 are fixedly connected or integrally formed. The third clamping plate 2241 is slidably engaged with the second fixing plate 2212 along the third direction Z, wherein one of the third clamping plate 2241 is provided with a sliding rail, and the other one of the third clamping plate 2242 is provided with a sliding chute.

Optionally, the third clamping member 2242 is a third quick clamp, which is fixed on the rotating frame 221 and drives the third clamping plate 2241 to have two states of approaching to the third fixing plate 2213 and moving away from the third fixing plate 2213. In this embodiment, the third quick clamp has two states, namely, two states in which the third clamping plate 2241 moves a distance toward the third fixing plate 2213 or in which the third clamping plate 2241 moves a distance away from the third fixing plate 2213, and in particular, the third quick clamp is a quick clamp, which is a prior art and will not be described herein.

Optionally, the support platform includes a workbench 11, a first moving component 12 and a second moving component 13, the first moving component 12 is disposed on the workbench 11 and drives the second moving component 13 to move along the second direction Y, and the second moving component 13 drives the bracket 21 to move along the third direction Z. In this embodiment, the first moving component 12 may be a screw nut structure, or may be a linear motor or a cylinder drive or a hydraulic drive. The second motion assembly 13 may be a screw nut structure, or may be a linear motor or a cylinder drive or a hydraulic drive.

Optionally, the support platform further includes a linear sliding rail 14, and the second moving component 13 is further provided with a linear sliding groove, where the linear sliding rail 14 is disposed on the working platform 11 along the second direction Y, and the linear sliding groove is in sliding fit with the linear sliding rail 14. In this embodiment, the linear chute and the linear sliding rail 14 are slidably engaged, so as to improve the stability of the first moving assembly 12 driving the second moving assembly 13 to move.

Optionally, the linear slide 14 is spaced from the first motion assembly 12 along the first direction X. In this embodiment, the above feature may further improve the stability of the movement of the first movement assembly 12 to drive the second movement assembly 13.

It is to be understood that the above examples of the present utility model are provided for clarity of illustration only and are not limiting of the embodiments of the present utility model. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are desired to be protected by the following claims.

Claims

1. The hard shell battery cell end cover side welding device is characterized by comprising a supporting platform and a turnover mechanism, wherein the turnover mechanism comprises a bracket (21), a clamping assembly and a driver (23), the clamping assembly is used for enabling an end cover (100) to be pressed at an opening of a core shell (200) and enabling the opening of the core shell (200) to face a first direction (X), the clamping assembly is rotationally arranged on the bracket (21) around the first direction (X), the driver (23) drives the clamping assembly to rotate, and the supporting platform drives the bracket (21) to slide along a second direction (Y) or a third direction (Z);

the first direction (X), the second direction (Y) and the third direction (Z) are perpendicular to each other.

2. The hard-shell cell end cover side welding device according to claim 1, wherein the clamping assembly comprises a rotating frame (221) and a first clamping assembly (222), the rotating frame (221) is rotatably arranged on the bracket (21) by taking the first direction (X) as a rotating shaft, and the driver (23) drives the rotating frame (221) to rotate;

the rotating frame (221) comprises a first fixing plate (2211), the first fixing plate (2211) is perpendicular to the first direction (X), the first clamping assembly (222) comprises a first clamping plate (2221) and a first clamping piece, the first clamping piece is arranged on the support (21) in a sliding mode along the first direction (X), the first clamping plate (2221) is in running fit with the first clamping piece around the first direction (X), the first clamping plate (2221) is opposite to the first fixing plate (2211) at intervals, and the first clamping piece is used for enabling the first clamping plate (2221) to move towards a direction close to the first fixing plate (2211).

3. The hard-case cell end cap side welding device according to claim 2, wherein the first clamping member comprises a first slide plate (2222) and a first snap clamp (2223), the first slide plate (2222) is in sliding fit with the bracket (21), the first clamping plate (2221) is in rotational fit with the first slide plate (2222) about the first direction (X), and the first snap clamp (2223) is fixed to the bracket (21) and drives the first slide plate (2222) to have two states toward and away from the first fixed plate (2211).

4. The hard-shell cell end cap side welding device according to claim 2, wherein the turret (221) comprises a second fixed plate (2212), the second fixed plate (2212) being perpendicular to the second direction (Y);

the clamping assembly further comprises a second clamping assembly (223), the second clamping assembly (223) comprises a second clamping plate (2231) and a second clamping piece (2232), the second clamping plate (2231) is slidably arranged on the rotating frame (221) along the second direction (Y) and opposite to the second fixing plate (2212), and the second clamping piece (2232) is used for enabling the second clamping plate (2231) to move towards the direction close to the second fixing plate (2212).

5. The hard-shell cell end cap side welding device according to claim 4, wherein the second clamping member (2232) is a second quick clamp, the second quick clamp is fixedly arranged on the rotating frame (221) and drives the second clamping plate (2231) to have two states of approaching to the second fixing plate (2212) and separating from the second fixing plate (2212).

6. The hard-shell cell end cap side welding device of claim 4, wherein the turret (221) comprises a third fixed plate (2213), the third fixed plate (2213) being perpendicular to the third direction (Z);

the clamping assembly further comprises a third clamping assembly (224), the third clamping assembly (224) comprises a third clamping plate (2241) and a third clamping piece (2242), the third clamping plate (2241) is arranged on the rotating frame (221) in a sliding mode along the third direction (Z) and opposite to the third fixing plate (2213), and the third clamping piece (2242) is used for enabling the third clamping plate (2241) to move towards a direction close to the third fixing plate (2213).

7. The hard-shell cell end cap side welding device according to claim 6, wherein the third clamping member (2242) is a third quick clamp, the third quick clamp is fixedly arranged on the rotating frame (221) and drives the third clamping plate (2241) to have two states of approaching to the third fixing plate (2213) and separating from the third fixing plate (2213).

8. The hard-shell cell end cap side welding device according to any one of claims 1-7, wherein the support platform comprises a workbench (11), a first motion assembly (12) and a second motion assembly (13), the first motion assembly (12) is arranged on the workbench (11) and drives the second motion assembly (13) to move along the second direction (Y), and the second motion assembly (13) drives the bracket (21) to move along the third direction (Z).

9. The hard-shell cell end cover side welding device according to claim 8, wherein the supporting platform further comprises a linear sliding rail (14), the second moving assembly (13) is further provided with a linear sliding groove, the linear sliding rail (14) is arranged on the workbench (11) along the second direction (Y), and the linear sliding groove is in sliding fit with the linear sliding rail (14).

10. The hard-shell cell end cap side welding device according to claim 9, wherein the linear slide (14) is spaced from the first motion assembly (12) along the first direction (X).