Clamping assembly and clamping tool

Abstract

The utility model belongs to the technical field of battery manufacturing, and particularly relates to a clamping assembly and a clamping tool, the clamping assembly comprises a driving mechanism and two clamping pieces which are symmetrically distributed along a first direction, each clamping piece comprises a cover plate and a contact surface for abutting against a pole assembly, and when the cover plate is clamped by the two clamping pieces, the cover plate is clamped by the two clamping pieces. The two contact surfaces limit the displacement of the pole assembly along the first direction relative to the cover plate; the driving mechanism is used for driving the two clamping pieces to get close to each other or get away from each other in the first direction; compared with the prior art, the clamping assembly can clamp the cover plate and the pole assembly at the same time, relative displacement between the cover plate and the pole assembly is avoided, and the stability of the cover plate and the pole assembly in the transferring process is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the battery manufacturing technical field especially relates to a clamping assembly and clamping frock. BACKGROUND

[0002] With the continuous development of battery technology, the top cover structure of the secondary battery also presents diversification, and a top cover structure in the prior art is proposed, which is a scattered part, the top cover includes a cover plate and a pole assembly located on the cover plate.

[0003] For the top cover structure in the form of scattered parts, the cover plate and the pole assembly are generally positioned before the top cover is assembled with the battery cell, so as to adjust the position of the pole assembly relative to the cover plate, thereby meeting the subsequent assembly requirements of the top cover. Due to the split setting of the pole assembly and the cover plate, the position of the positioned cover plate and the pole assembly will be relatively displaced due to factors such as vibration during the transfer of the top cover, although the displacement is small, but it will still affect the subsequent assembly of the top cover relative to the battery cell.

[0004] Therefore, it is necessary to adjust the transfer device of the existing top cover to avoid the relative displacement of the cover plate and the pole assembly during the transfer of the top cover. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above-mentioned technical problem, provides a kind of clamping assembly and clamping frock, this clamping assembly can simultaneously clamp cover plate and pole assembly, avoid the relative displacement between cover plate and pole assembly, improve the stability of cover plate and pole assembly in the process of transfer.

[0006] Therefore, the utility model provides a kind of clamping assembly, comprising:

[0007] Two symmetrical distribution clamping pieces along the first direction, and the clamping piece includes a contact surface for abutting the cover plate and the pole assembly, when the two clamping pieces clamp the cover plate, the two contact surfaces limit the displacement of the pole assembly relative to the cover plate along the first direction;

[0008] Driving mechanism, and the driving mechanism is used to drive the two clamping pieces to be close to each other or to be far away from each other along the first direction.

[0009] In the technical scheme, the cover plate and the pole assembly are placed in the magazine together, when the cover plate and the pole assembly need to be transferred, the pole assembly is placed in the mounting position on the cover plate first, then the two clamping pieces are placed on the two sides of the cover plate and the pole assembly in the first direction, at this time, the driving mechanism drives the two clamping pieces to be close to each other and finally clamp the cover plate and the pole assembly at the same time, then the cover plate and the pole assembly are transferred to the adapter piece that has been welded, so that the pole assembly is combined with the adapter piece.

[0010] In the technical scheme, further, the side wall of the two clamping pieces on the side close to each other is provided with the first contact surface and the second contact surface which are parallel, the first contact surface can abut against the side wall of the pole assembly in the first direction, and the second contact surface can abut against the side wall of the cover plate in the first direction.

[0011] In the technical scheme, further, the surface of the two clamping pieces on the side close to each other is provided with the third contact surface, the third contact surface is perpendicular to the first contact surface, and the third contact surface can abut against the surface of the pole assembly in the second direction.

[0012] In the technical scheme, further, the surface of the two clamping pieces on the side close to each other is provided with the fourth contact surface, the fourth contact surface is perpendicular to the second contact surface, and the fourth contact surface can abut against the surface of the cover plate in the second direction.

[0013] In the technical scheme, further, the clamping piece is provided with the empty space, and the projection of the empty space in the second direction does not intersect with the projection of the mounting port of the pole assembly in the second direction in the clamping state.

[0014] In the technical scheme, further, the projection of the empty space in the second direction is in an arc shape.

[0015] In the technical scheme, further, the driving mechanism comprises two mounting racks, and the two mounting racks are detachably connected with the two clamping pieces respectively.

[0016] In the technical scheme, further, the side wall of the clamping piece is provided with a threaded hole, the mounting rack is provided with a mounting through hole, and the threaded end of the threaded fastener is threadedly connected with the threaded hole after passing through the mounting through hole.

[0017] The utility model discloses simultaneously provides a kind of clamping tool, including multiple aforementioned clamping assemblies, multiple clamping assemblies are spaced along third direction, multiple mounting racks located at the same side are collectively connected with same transverse frame.

[0018] In the technical scheme, further, the mounting rack is detachably connected with the transverse frame.

[0019] The utility model has the advantages of:

[0020] 1. by the cooperation of two symmetrical distribution clamping pieces and driving mechanism, the driving mechanism drives two clamping pieces to move oppositely or apart, and two clamping pieces can clamp cover plate and pole assembly at the same time, so that relative displacement does not occur between cover plate and pole assembly when cover plate and pole assembly are transferred, manual fixing of pole assembly relative to cover plate is not required, subsequent battery cell accurate assembly can be guaranteed, and the quality of battery manufacturing can be guaranteed.

[0021] 2. By setting the third contact surface on the clamping piece, the partial pressure of the clamping piece on the pole column assembly is towards the cover plate when the two clamping pieces clamp the pole column assembly, so that the contact area between the clamping piece and the pole column assembly is increased, and the connection between the pole column assembly and the cover plate is also more closely, and the stability of the cover plate and the pole column assembly in the transfer process is improved.

[0022] 3. By setting the fourth contact surface on the clamping piece, the partial pressure of the clamping piece on the cover plate is towards the pole column assembly when the clamping piece clamps the cover plate, so that the contact area between the clamping piece and the cover plate is increased, and the third contact surface and the fourth contact surface cooperate, the extrusion force of the two clamping pieces on the cover plate and the pole column assembly is towards each other when the two clamping pieces clamp the cover plate and the pole column assembly, which further makes the connection between the pole column assembly and the cover plate more closely, and further improves the stability of the cover plate and the pole column assembly in the transfer process.

[0023] 4. By setting the avoidance position on the clamping piece, the projection of the avoidance position on the mounting port of the pole column assembly in the second direction does not coincide, so that the light source of the photoelectric sensor is contacted, and the welding position is avoided, the contact area between the welding position and the workpiece is reduced, the pinhole and the burst point caused by the welding pollution source caused by the workpiece are reduced, and the stability of the welding is indirectly improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiment or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creating labor.

[0025] Figure 1 It is a structure diagram of the cover plate and the pole column assembly in the present application.

[0026] Figure 2 It is a structure diagram of the cover plate and the pole column assembly in the present application.

[0027] Figure 3 It is a structure diagram of the cover plate and the pole column assembly in the present application.

[0028] Figure 4 It is a structure diagram of the cover plate and the pole column assembly in the present application.

[0029] Figure 5 It is a structure diagram of the cover plate and the pole column assembly in the present application.

[0030] Figure 6 It is Figure 5A local enlarged structure schematic view at middle A.

[0031] Figure 7 It is a main view structure schematic view of the clamping piece in the utility model.

[0032] Figure 8 It is a three-dimensional structure schematic view of the clamping piece in the utility model.

[0033] The mark in the figure indicates that:

[0034] 1, cover plate; 2, pole assembly; 201, mounting port; 202, upper insulating piece; 3, clamping piece; 301, first contact surface; 302, second contact surface; 303, third contact surface; 304, fourth contact surface; 305, empty position; 4, mounting frame; 401, mounting through hole; 5, threaded hole; 6, cross frame; X, first direction; Y, second direction; Z, third direction. DETAILED DESCRIPTION

[0035] The technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0036] In the description of the utility model, it should be explained that the terms used here are only for describing the specific embodiments, and are not intended to limit the example embodiments according to the application. In order to facilitate the description, the size of each part shown in the drawings is not drawn according to the actual proportional relationship. The technology, method and equipment known to those skilled in the related art may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as part of the authorized description. In all examples shown and discussed here, any specific value should be interpreted as only exemplary, and not as a limitation. Therefore, other examples of example embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0037] Please refer to Figure 1 In the utility model, the cover plate 1 is provided with a positive electrode area and a negative electrode area along the third direction Z, the positive electrode area and the negative electrode area can be connected with the pole assembly 2, the positive electrode area and the negative electrode area are provided with mounting grooves for mounting the pole assembly 2, the profile of the mounting groove is slightly larger than the outer profile of the pole assembly 2, the pole assembly 2 includes a top cover pole and a mounting port 201 for passing through a connecting piece, the top cover pole has an upper insulating piece 202 outside.

[0038] Figure 2 Fig. 1 shows a schematic view of the positive and negative areas on the cover plate 1 where the pole post assembly 2 is placed, Figure 3 Fig. 2 shows a schematic view of the positive and negative areas on the cover plate 1 where the pole post assembly 2 is placed, and only one set of pole post assembly 2 can be seen in this view, but in fact there are two pole post assemblies 2 on the cover plate 1.

[0039] Embodiment 1

[0040] As shown in Figures 4-5 the embodiment, a clamping assembly is provided, which includes a driving mechanism and two clamping members 3 symmetrically distributed along a first direction X;

[0041] Referring to Figure 4 , the positive and negative areas on the cover plate 1 are separately connected with the pole post assembly 2, and at this time the pole post assembly 2 is only placed on the cover plate 1;

[0042] Referring to Figure 4 , specifically, the clamping member 3 includes a contact surface for abutting against the cover plate 1 and the pole post assembly 2, and when the two clamping members 3 clamp the cover plate 1, the two contact surfaces limit the displacement of the pole post assembly 2 relative to the cover plate 1 along the first direction X;

[0043] The driving mechanism is used to drive the two clamping members 3 to move closer to or farther away from each other along the first direction X;

[0044] In this embodiment, the driving mechanism includes two mounting frames 4, and the two mounting frames 4 are respectively detachably connected with the two clamping members 3;

[0045] In this embodiment, when the cover plate 1 and the pole post assembly 2 are placed together in the magazine, when the cover plate 1 and the pole post assembly 2 need to be transferred, the pole post assembly 2 is first placed in the mounting position on the cover plate 1, then the two clamping members 3 are placed on both sides of the cover plate 1 and the pole post assembly 2 along the first direction X, at this time the driving mechanism drives the two clamping members 3 to move closer to each other and finally clamps the cover plate 1 and the pole post assembly 2 at the same time, and then the cover plate 1 and the pole post assembly 2 are transferred to the adapter piece that has been welded to combine the pole post assembly 2 with the adapter piece;

[0046] In this embodiment, when the cover is clamped by the two clamping members 3, the contact surface of the clamping member 3 abuts against the cover plate 1 and the pole post assembly 2, so that the position of the pole post assembly 2 along the first direction X is stationary relative to the cover plate 1, avoiding the position of the pole post assembly 2 relative to the cover plate 1 changing during the transfer process, which leads to the need for repositioning;

[0047] It should be noted that the two clamping pieces 3 can be moved synchronously and clamp the cover plate 1 and the pole assembly 2 at the same time, or one clamping piece 3 can abut against the cover plate 1 and the pole assembly 2 first, and then the other clamping piece 3 abuts against the cover plate 1 and the pole assembly 2 to finally clamp the cover plate 1 and the pole assembly 2 at the same time.

[0048] Embodiment 2

[0049] The embodiment provides a clamping assembly, in addition to comprising the technical solutions in the above embodiments, a structure of the clamping piece 3 is disclosed.

[0050] Please refer to Figure 7 The two clamping pieces 3 are provided with the first contact surface 301 and the second contact surface 302 which are parallelly distributed on the side walls of the side close to each other, the first contact surface 301 can abut against the side wall of the pole assembly 2 in the first direction X, and the second contact surface 302 can abut against the side wall of the cover plate 1 in the first direction X.

[0051] In the embodiment, the two first contact surfaces 301 on the two clamping pieces 3 can clamp the pole assembly 2 in the first direction X at the same time, the two second contact surfaces 302 on the two clamping pieces 3 can clamp the cover plate 1 in the first direction X at the same time, and the positions of the first contact surface 301 and the second contact surface 302 on the clamping piece 3 are fixed, so that the pole assembly 2 and the cover plate 1 cannot move in the second direction Y after being clamped, that is, the two clamping pieces 3 clamp the pole assembly 2 and the cover plate 1 at the same time.

[0052] Embodiment 3

[0053] The embodiment provides a clamping assembly, in addition to comprising the technical solutions in the above embodiments, a structure of the clamping piece 3 is disclosed.

[0054] Please refer to Figure 6 In the embodiment, the two clamping pieces 3 are provided with the third contact surface 303 on the surface close to each other, the third contact surface 303 is perpendicular to the first contact surface 301, and the third contact surface 303 can abut against the surface of the pole assembly 2 in the second direction Y.

[0055] In this way, in the process that the clamping piece 3 moves along the first direction X to clamp the pole assembly 2, the third contact surface 303 can abut against the surface of the pole assembly 2 in the second direction Y, so that part of the pressure of the clamping piece 3 on the pole assembly 2 is along the second direction Y and towards the cover plate 1.

[0056] In this way, the contact area between the clamping piece 3 and the pole assembly 2 is increased, the connection between the pole assembly 2 and the cover plate 1 can also be more closely, and the stability of the cover plate 1 and the pole assembly 2 in the transfer process is improved.

[0057] Embodiment 4

[0058] This embodiment provides a clamping assembly, which is further optimized in structure of the clamping piece 3 based on the embodiment 3;

[0059] Please refer to Figure 6 In this embodiment, the fourth contact surface 304 is arranged on the surface of the two clamping pieces 3 close to each other, the fourth contact surface 304 is perpendicular to the second contact surface 302, and the fourth contact surface 304 can abut against the surface of the cover plate 1 in the second direction Y;

[0060] In this way, during the process of clamping the pole assembly 2 by moving the clamping piece 3 along the first direction X, the fourth contact surface 304 can abut against the surface of the cover plate 1 in the second direction Y, so that a part of the pressure of the clamping piece 3 on the cover plate 1 is along the second direction Y and towards the pole assembly 2;

[0061] In this way, the contact area between the clamping piece 3 and the cover plate 1 is increased, and in addition, the third contact surface 303 cooperates with the fourth contact surface 304, so that when the two clamping pieces 3 clamp the cover plate 1 and the pole assembly 2, the two clamping pieces 3 are subjected to the extrusion force towards each other, which further makes the connection between the pole assembly 2 and the cover plate 1 more compact, and further improves the stability of the cover plate 1 and the pole assembly 2 during the transfer process.

[0062] Embodiment 5

[0063] This embodiment provides a clamping assembly, which is further optimized in structure of the clamping piece 3 based on the technical solutions of the above embodiments;

[0064] During the contact between the clamping piece 3 and the cover plate 1, wear will occur, and wear particles will be generated during the wear process. When the particles generated by wear are attracted and stay on the surface of the clamping piece 3 due to static electricity, these particles may fall into the battery through the mounting hole 201 on the pole assembly 2 or the hole on the cover plate 1 when the clamping piece 3 clamps the cover plate 1 subsequently, which may cause irreversible adverse effects such as internal short circuit of the battery;

[0065] Based on this problem, in this embodiment, please refer to Figure 4 The clamping piece 3 is provided with an empty space 303, and the projection of the empty space 303 on the first direction X does not coincide with the mounting hole 201 of the pole assembly 2 when the clamping piece 3 clamps the pole assembly 2, and please refer to Figure 8 The projection of the empty space 303 on the first direction X is arc-shaped;

[0066] In this way, even if wear particles are generated during the contact between the clamping piece 3 and the cover plate 1, the particles adhere to the clamping piece 3, and when the cover plate 1 and the pole post assembly 2 are clamped subsequently, the particles cannot pass through the mounting hole 201 on the pole post assembly 2 or the hole on the cover plate 1, so as not to contaminate the battery cell;

[0067] In addition, the arc-shaped avoidance position 303 can increase the light source contact of the photoelectric sensor and avoid the welding position, reduce the contact area between the welding position and the workpiece, reduce the pinholes and burst points caused by the welding pollution source caused by the workpiece, and indirectly improve the stability of the welding.

[0068] Embodiment 6

[0069] The embodiment provides a clamping assembly, in addition to the technical solutions of the above embodiments, a mounting bracket 4 and a clamping piece 3 are connected in a manner.

[0070] In the embodiment, please refer to Figure 4 A mounting through hole 401 is arranged on the mounting bracket 4, please refer to Figure 8 A threaded hole 5 is arranged on the side wall of the clamping piece 3, and the mounting bracket 4 and the clamping piece 3 are detachably connected through a threaded fastener (not shown in the figure), specifically, the fixed end of the threaded fastener cannot pass through the mounting through hole 401, and the threaded end of the threaded fastener is screwed with the threaded hole 5 after passing through the mounting through hole 401.

[0071] The threaded fastener in the embodiment is a threaded fastener structure on the market, such as a screw rod, a screw, etc.

[0072] Embodiment 7

[0073] The embodiment provides a clamping tool, please refer to Figure 4 Two clamping pieces 3 corresponding to a group of cover plates 1 and a group of pole post assemblies 2 are defined as a group of clamping assemblies, and two mounting brackets 4 corresponding to two clamping pieces 3 symmetrically distributed in the first direction X are defined as a group of mounting brackets 4, in the embodiment, there are two groups of clamping assemblies, and the two groups of clamping assemblies are opposite to the positive electrode area and the negative electrode area respectively, the two groups of clamping assemblies are connected with two groups of mounting brackets 4 respectively, and the two groups of mounting brackets 4 are connected through a cross bracket 6; in actual use, the two cross brackets 6 are driven to move linearly in the first direction X through a linear driving device (not shown in the figure), so as to realize that the two groups of clamping assemblies clamp and release the two groups of pole post assemblies 2 and the cover plates 1 respectively; the structures that can drive the cross bracket 6 to move linearly in the prior art can be used as the linear driving device in the embodiment, such as cylinder driving, screw nut cooperation driving, etc.

[0074] In the embodiment, the two sets of clamping assemblies, the two sets of mounting racks 4 and the two cross racks 6 constitute a clamping tool, in actual use, more sets of clamping assemblies and mounting racks 4 can be added in a clamping tool according to the clamping needs, and the mounting racks 4 are connected through the cross racks 6, for example, when the plurality of cover plates 1 and the pole column assemblies 2 thereon need to be clamped simultaneously.

[0075] The embodiments of the utility model are described above in combination with the drawings, the embodiments in the application and the features in the embodiments can be combined mutually in the case of no conflict, the application is not limited to the above-mentioned specific implementation, the above-mentioned specific implementation is only illustrative, and is not restrictive, and the ordinary skilled person in the art can make a lot of forms under the inspiration of the application without departing from the range of the application and the protection of the claims, which all belong to the protection of the application.

Claims

1. A clamping assembly, characterized in that, The utility model relates to a clamp assembly for a cover plate (1) and a pole assembly (2), comprising: two clamps (3) symmetrically distributed along a first direction (X), the clamps (3) comprising contact surfaces for abutting the cover plate (1) and the pole assembly (2), when the two clamps (3) clamp the cover plate (1), the two contact surfaces limit the displacement of the pole assembly (2) relative to the cover plate (1) along the first direction (X); a driving mechanism for driving the two clamps (3) to move closer to or further away from each other along the first direction (X).

2. The clamp assembly of claim 1, wherein: The side wall of the two clamps (3) on the side closer to each other is provided with a first contact surface (301) and a second contact surface (302) distributed in parallel, the first contact surface (301) can abut the side wall of the pole assembly (2) in the first direction (X), and the second contact surface (302) can abut the side wall of the cover plate (1) in the first direction (X).

3. The clamp assembly of claim 2, wherein: The surface of the two clamps (3) on the side closer to each other is provided with a third contact surface (303), the third contact surface (303) is perpendicular to the first contact surface (301), and the third contact surface (303) can abut the surface of the pole assembly (2) in a second direction (Y).

4. The clamp assembly of claim 3, wherein: The surface of the two clamps (3) on the side closer to each other is provided with a fourth contact surface (304), the fourth contact surface (304) is perpendicular to the second contact surface (302), and the fourth contact surface (304) can abut the surface of the cover plate (1) in the second direction (Y).

5. The clamp assembly of claim 1, wherein: The clamp (3) is provided with a clearance (305), and the projection of the clearance (305) in the second direction (Y) does not intersect with the projection of a mounting port (201) of the pole assembly (2) in the second direction (Y) in the clamped state.

6. The clamp assembly of claim 5, wherein: The projection of the clearance (305) in the second direction (Y) is arc-shaped.

7. The clamp assembly of any one of claims 1-6, wherein: The driving mechanism comprises two mounting frames (4), and the two mounting frames (4) are respectively detachably connected with the two clamps (3).

8. The clamp assembly of claim 7, wherein: The side wall of the clamp (3) is provided with a threaded hole (5), the mounting frame (4) is provided with a mounting through hole (401), and the threaded end of a threaded fastener is threadedly connected with the threaded hole (5) after passing through the mounting through hole (401).

9. A clamping fixture, characterized by: The utility model relates to a clamp assembly for a cover plate (1) and a pole assembly (2), comprising:

10. The clamping fixture of claim 9, wherein: two clamps (3) symmetrically distributed along a first direction (X), the clamps (3) comprising contact surfaces for abutting the cover plate (1) and the pole assembly (2), when the two clamps (3) clamp the cover plate (1), the two contact surfaces limit the displacement of the pole assembly (2) relative to the cover plate (1) along the first direction (X); a driving mechanism for driving the two clamps (3) to move closer to or further away from each other along the first direction (X). The side wall of the two clamps (3) on the side closer to each other is provided with a first contact surface (301) and a second contact surface (302) distributed in parallel, the first contact surface (301) can abut the side wall of the pole assembly (2) in the first direction (X), and the second contact surface (302) can abut the side wall of the cover plate (1) in the first direction (X). The surface of the two clamps (3) on the side closer to each other is provided with a third contact surface (303), the third contact surface (303) is perpendicular to the first contact surface (301), and the third contact surface (303) can abut the surface of the pole assembly (2) in a second direction (Y). The surface of the two clamps (3) on the side closer to each other is provided with a fourth contact surface (304), the fourth contact surface (304) is perpendicular to the second contact surface (302), and the fourth contact surface (304) can abut the surface of the cover plate (1) in the second direction (Y). The clamp (3) is provided with a clearance (305), and the projection of the clearance (305) in the second direction (Y) does not intersect with the projection of a mounting port (201) of the pole assembly (2) in the second direction (Y) in the clamped state. The projection of the clearance (305) in the second direction (Y) is arc-shaped. The driving mechanism comprises two mounting frames (4), and the two mounting frames (4) are respectively detachably connected with the two clamps (3). The side wall of the clamp (3) is provided with a threaded hole (5), the mounting frame (4) is provided with a mounting through hole (401), and the threaded end of a threaded fastener is threadedly connected with the threaded hole (5) after passing through the mounting through hole (401). The utility model relates to a clamp assembly for a cover plate (1) and a pole assembly (2), comprising: two clamps (3) symmetrically distributed along a first direction (X), the clamps (3) comprising contact surfaces for abutting the cover plate (1) and the pole assembly (2), when the two clamps (3) clamp the cover plate (1), the two contact surfaces limit the displacement of the pole assembly (2) relative to the cover plate (1) along the first direction (X); a driving mechanism for driving the two clamps (3) to move closer to or further away from each other along the first direction (X).

Images