CN218333911U

CN218333911U - Diaphragm clamping structure

Info

Publication number: CN218333911U
Application number: CN202222140381.6U
Authority: CN
Inventors: 罗威
Original assignee: Chuneng New Energy Co Ltd
Current assignee: Chuneng New Energy Co Ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2023-01-17
Anticipated expiration: 2032-08-15

Abstract

The utility model provides a diaphragm clamping structure, diaphragm clamping structure sets up on the bottom plate, diaphragm clamping structure includes the first slide with bottom plate sliding connection, sets up the second slide on first slide and sets up the mounting panel on the second slide, second slide and first slide sliding connection, the slip direction of first slide is perpendicular with the slip direction of second slide, the vertical setting of mounting panel, the mounting panel is improved level and is provided with punch holder and lower plate, but punch holder and lower plate vertical slip, still be provided with the lamination platform on the bottom plate, place first layer diaphragm on the lamination platform, the diaphragm is held between punch holder and lower plate. The diaphragm clamping structure can avoid the first-layer diaphragm from being folded, so that the first-layer diaphragm is high in stacking precision.

Description

Diaphragm clamping structure

Technical Field

The utility model relates to a battery manufacturing technology field specifically is a diaphragm clamping structure.

Background

The performance of the lithium ion power battery is closely related to the process and the manufacturing equipment, and the battery core of the lithium ion power battery can be divided into a winding process and a lamination process according to the manufacturing process. The winding process is to wind the divided positive pole piece, diaphragm and negative pole piece in sequence by a fixed winding needle to be extruded into a cylindrical shape, an elliptic cylindrical shape or a square shape, and then the positive pole piece, the diaphragm and the negative pole piece are placed in a square shell or a cylindrical metal shell, and parameters such as the size of the pole pieces, the number of turns of winding and the like are determined according to the design capacity of the battery. The lamination process is to cut positive and negative pole pieces into required sizes, then to laminate the positive pole pieces, the diaphragms and the negative pole pieces into single battery cells, then to stack the single battery cells together, wherein adjacent single battery cells are isolated by the diaphragms, and the outer sides of the first single battery cell and the last single battery cell also need to be isolated by the first diaphragm and the last diaphragm, so as to finally form the battery module.

At present, in the lamination process, after a first layer of diaphragm is cut off, the diaphragm can be blown back to a lamination platform, after the first layer of diaphragm is adsorbed by a vacuum hole of the lamination platform, the first layer of diaphragm is fixed, and then a positive plate, a diaphragm, a negative plate and the diaphragm are sequentially and repeatedly stacked, so that the battery module is finally formed. Because the diaphragm is compressed air blowback to the lamination platform, the controllability of the first-layer diaphragm of the battery cell is not high, the alignment degree is poor, in addition, the vacuum adsorption of the lamination platform causes the tension of the diaphragm to be insufficient, the first-layer diaphragm is easy to wrinkle, and the product quality of the battery cell is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a problem for provide a diaphragm clamping structure, use this clamping structure can make when stacking the first floor diaphragm, avoid first floor diaphragm fold, improve first floor diaphragm and stack the precision.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a diaphragm clamping structure, its characterized in that, diaphragm clamping structure sets up on the bottom plate, diaphragm clamping structure includes first slide with bottom plate sliding connection, sets up the second slide on first slide and sets up the mounting panel on the second slide, second slide and first slide sliding connection, the slip direction of first slide is perpendicular with the slip direction of second slide, the vertical setting of mounting panel, the mounting panel is improved level and is provided with punch holder and lower plate, but punch holder and lower plate vertical slip, still be provided with the lamination platform on the bottom plate, place first layer diaphragm on the lamination platform, the diaphragm is by the centre gripping between punch holder and lower plate.

Further, the upper clamping plate and the lower clamping plate clamp one side of the width of the diaphragm.

In one embodiment, the diaphragm clamping structures are provided in two, and the two diaphragm clamping structures clamp two sides of the width of the diaphragm respectively.

Further, two diaphragm clamping structures are arranged in central symmetry.

In another embodiment, a blowing mechanism for blowing air to the membrane is arranged on the lamination platform, and the blowing mechanism is used for blowing the clamped membrane into a horizontal state.

Furthermore, the blowing mechanism is arranged on one side, close to the lower clamping plate, of the lamination platform, and the top of the blowing mechanism is lower than that of the lamination platform.

Further, the second sliding plate slides in the width direction of the diaphragm.

Furthermore, a first cylinder is arranged on the lower clamping plate, and the end part of a piston rod of the first cylinder is connected with the upper clamping plate.

Further, a first sliding groove is vertically formed in the surface of the mounting plate, one ends of the upper clamping plate and the lower clamping plate are arranged in the first sliding groove, a second air cylinder is arranged on the surface of the mounting plate, and the end portion of a piston rod of the second air cylinder is connected with the lower clamping plate.

Furthermore, a second sliding groove is formed in the bottom plate, the first sliding plate slides in the second sliding groove, a third sliding groove is formed in the first sliding plate, the second sliding plate slides in the third sliding groove, and the first sliding plate and the second sliding plate are driven by a third air cylinder and a fourth air cylinder respectively.

The utility model has the advantages that:

1. the utility model discloses a set up two sets of punch holder and lower plate, carry out the centre gripping with the diaphragm of blowback on to the lamination platform, put on the lamination platform again, punch holder and lower plate can control first layer diaphragm tension to smooth the diaphragm, avoid the fold.

2. The utility model discloses can also be through a set of punch holder and lower plate to be provided with the mechanism of blowing to the diaphragm bloies on the lamination platform, punch holder and lower plate carry out the centre gripping with the diaphragm of blowback to on the lamination platform, and the mechanism of blowing blows the diaphragm flat, places on the lamination platform again, can avoid the diaphragm to take place the fold.

3. The utility model discloses be provided with the sensor of rectifying on the lamination platform, detect the diaphragm and put at the lamination platform position to contrast with the setting value, through the removal of the first slide of controller control and second slide, guarantee first layer diaphragm alignment precision, improve the quality of electric core.

4. The utility model discloses direct structural transformation optimization upgrading in tradition increases diaphragm clamping structure, does not influence original beat, and compatible strong, dismantles the assembly simple, and maneuverability is strong.

Drawings

Fig. 1 is a schematic structural view of the present invention;

fig. 2 is a usage state diagram of embodiment 1 of the present invention;

fig. 3 is a usage state diagram of embodiment 2 of the present invention;

reference numerals: the device comprises a first sliding plate 1, a second sliding plate 2, a mounting plate 3, a supporting plate 4, a lamination platform 5, a diaphragm 6, a lower clamping plate 7, an upper clamping plate 8, a first air cylinder 9, a bottom plate 10 and a blowing mechanism 11.

Detailed Description

The present invention will be described in further detail with reference to the drawings and specific embodiments.

Example 1: as shown in fig. 1, a diaphragm clamping structure, diaphragm clamping structure sets up on bottom plate 10, diaphragm clamping structure includes first slide 1 with bottom plate 10 sliding connection, sets up second slide 2 on first slide 1 and sets up mounting panel 3 on second slide 2, second slide 2 and first slide 1 sliding connection, the slip direction of first slide 1 is perpendicular with the slip direction of second slide 2, the vertical setting of mounting panel 3, the level is provided with punch holder 8 and lower plate 7 on mounting panel 3, punch holder 8 and lower plate 7 can slide in vertical direction, still be provided with lamination platform 5 on bottom plate 10, place first layer diaphragm 6 on lamination platform 5, diaphragm 6 is centre gripping between punch holder 8 and lower plate 7.

The vertical first spout of having seted up in mounting panel 3 surface, the one end setting of punch holder 8 and lower plate 7 is in first spout, 3 surfaces on mounting panel are provided with the second cylinder, the tailpiece of the piston rod portion of second cylinder is connected with lower plate 7.

The bottom plate 10 is provided with a second sliding chute, the first sliding plate 1 slides in the second sliding chute, the first sliding plate 1 is provided with a third sliding chute, the second sliding plate 2 slides in the third sliding chute, the first sliding plate 1 and the second sliding plate 2 are respectively driven by a third cylinder and a fourth cylinder, and the second sliding plate 2 slides along the width direction of the diaphragm 6.

The lower clamping plate 7 is provided with a first cylinder 9, and the end part of a piston rod of the first cylinder 9 is connected with the upper clamping plate 8. The first cylinder 9 is used for clamping the upper clamp plate 8 and the lower clamp plate 7.

As shown in fig. 2, in this embodiment, two diaphragm clamping structures are provided, the two diaphragm clamping structures respectively clamp two sides of the width of the diaphragm 6, and the two diaphragm clamping structures are arranged in a central symmetry manner.

In this embodiment, the second sliding plate 2 slides in the Y-axis direction, the first sliding plate 1 slides in the X-axis direction, and the upper and

lower clamps

8 and 7 slide in the Z-axis direction, where the Y-axis is parallel to the width direction of the diaphragm 6, the Z-axis is a vertical direction, and the X-axis is perpendicular to the Y-axis in a horizontal plane. The two sets of the upper and

lower clamping plates

8 and 7 can move arbitrarily in the three directions of the X, Y, and Z axes with the diaphragm 6 interposed therebetween.

And a supporting plate 4 is arranged between the lower clamping plate 7 and the end part of the piston rod of the second cylinder, and the supporting plate 4 plays a role in supporting and reinforcing.

And a deviation rectifying sensor and a controller are arranged on the lamination platform 5, the deviation rectifying sensor is connected with the controller, and the controller is used for controlling the fourth cylinder. Edge positions of the diaphragm 6 on two sides in the X-axis direction are detected by the deviation rectifying sensor to pick up deviation signals of the edge positions, the deviation signals are transmitted to the controller to carry out logic operation, and the controller controls the fourth cylinder according to an operation result, so that the second sliding plate 2 moves in the Y-axis direction until the diaphragm 6 moves to a preset position.

The surfaces of the upper clamping plate 8 and the lower clamping plate 7 are respectively provided with an encapsulation, so that the diaphragm 6 can be clamped, and the diaphragm 6 can be prevented from being damaged by clamping.

The utility model discloses a use method: in an initial state, the upper clamping plates 8 and the lower clamping plates 7 of the two diaphragm clamping structures are not clamped together, the third air cylinder drives the first sliding plates 1 of the two diaphragm clamping structures to move along the direction of approaching the lamination platform 5 along the X axial direction, so that the lamination platform 5 is positioned between the two groups of the upper clamping plates 8 and the ends of the lower clamping plates 7, and the second air cylinder drives the two lower clamping plates 7 to move to a position slightly lower than the top of the lamination platform 5; after a first layer of diaphragm 6 is cut off through a cutting station, the first layer of diaphragm 6 is blown onto a lamination platform 5 in a back blowing mode, a fourth cylinder drives a second sliding plate 2 to move in a direction close to the lamination platform 5 along the Y axis, the lamination platform 5 is located between two diaphragm clamping structures, the distance between an upper clamping plate 8 and a lower clamping plate 7 of the two diaphragm clamping structures and the lamination platform 5 is 10mm at the moment, both sides of the width of the diaphragm 6 are located between the upper clamping plate 8 and the lower clamping plate 7, a first cylinder 9 drives the upper clamping plate 8 to move and tightly clamp the diaphragm 6 with the lower clamping plate 7, the second cylinder drives the lower clamping plate 7 to ascend to a position slightly higher than the top of the lamination platform 5, the diaphragm 6 is clamped by the two diaphragm clamping structures, the diaphragm 6 is blown onto the lamination platform 5 in the back blowing mode along the X axis direction and only has deviation on the Y axis, therefore, a deviation sensor above the lamination platform 5 detects the edge positions of the diaphragm 6 along the X axis direction, so as to pick up deviation signals of the edge positions, the deviation signals are transmitted to a controller to carry out logical operation, the controller controls the fourth cylinder according to the operation result, the second sliding plate 2 of the second clamping structures moves in the Y axis direction, the second clamping structures, the second clamping plates 2 moves to the lamination platform 5, the upper clamping plates and the lamination platform 5, the vacuum lamination platform 5, the diaphragm 6, the vacuum cylinder drives the diaphragm 6 to open, the lamination platform 6, the lamination platform 5, the lamination platform 6, the vacuum cylinder to open, the lamination platform 6, and the lamination platform 5, the vacuum lamination platform to open, and the lamination platform. In the above process, the fourth cylinder may be manually controlled to adjust the deviation of the diaphragm 6 in the Y axis.

Example 2: compared with embodiment 1, embodiment 2 is provided with only one set of the lower and

upper clamping plates

7 and 8, and the blowing mechanism 11 is added. As shown in fig. 3, the blowing mechanism 11 is disposed on one side of the lamination platform 5 close to the lower clamping plate 7 and the upper clamping plate 8, the top of the blowing mechanism 11 is lower than the top of the lamination platform 5, after one side of the membrane 6 is clamped by the lower clamping plate 7 and the upper clamping plate 8, the blowing mechanism 11 blows air to an upper oblique direction far away from the lower clamping plate 7 and the upper clamping plate 8, so that the clamped membrane 6 is blown to be horizontal, wrinkles of the membrane 6 are eliminated, then the second air cylinder drives the lower clamping plate 7 and the upper clamping plate 8 to move downwards, and when the membrane 6 just contacts the upper surface of the lamination platform 5, the blowing mechanism 11 is closed, the lamination platform 5 is opened in vacuum, the membrane 6 is sucked and flattened, and the stacking of the first layer of membranes 6 is completed.

The foregoing shows and describes the general principles and principal structural features of the present invention. The utility model discloses do not receive the restriction of above-mentioned example, under the prerequisite that does not depart from the spirit and the scope of the utility model, the utility model discloses still can have various changes and improvement, these changes and improvement all fall into the scope of the utility model that claims. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a diaphragm clamping structure, its characterized in that, diaphragm clamping structure sets up on bottom plate (10), diaphragm clamping structure includes first slide (1) with bottom plate (10) sliding connection, sets up second slide (2) on first slide (1) and sets up mounting panel (3) on second slide (2), second slide (2) and first slide (1) sliding connection, the slip direction of first slide (1) is perpendicular with the slip direction of second slide (2), mounting panel (3) vertical setting, mounting panel (3) are improved level and are provided with punch holder (8) and lower plate (7), but punch holder (8) and lower plate (7) vertical slip, still be provided with lamination platform (5) on bottom plate (10), place first layer diaphragm (6) on lamination platform (5), diaphragm (6) are by the centre gripping between punch holder (8) and lower plate (7).

2. A diaphragm clamping structure according to claim 1, wherein said upper clamping plate (8) and said lower clamping plate (7) clamp one side of the width of the diaphragm (6).

3. A diaphragm retaining structure as claimed in claim 2, wherein there are two of said diaphragm retaining structures, one retaining each side of the width of the diaphragm (6).

4. A diaphragm retaining structure as claimed in claim 3, wherein two of said diaphragm retaining structures are arranged with central symmetry.

5. A membrane holding structure according to claim 2, wherein the lamination stage (5) is provided with blowing means (11) for blowing air to the membrane (6), the blowing means (11) being adapted to blow the held membrane (6) in a horizontal state.

6. A membrane holding structure according to claim 5, wherein said blowing means (11) is arranged on the side of the lamination platform (5) adjacent to the lower clamping plate (7), the top of said blowing means (11) being lower than the top of the lamination platform (5).

7. A membrane clamping structure according to any one of claims 3 to 6, wherein the second sliding plate (2) slides along the width of the membrane (6).

8. A membrane gripping structure according to any one of claims 3 to 6, characterized in that the lower jaw (7) is provided with a first cylinder (9), the piston rod end of the first cylinder (9) being connected to the upper jaw (8).

9. A diaphragm clamping structure according to any one of claims 3 to 6, wherein a first sliding groove is vertically formed on the surface of the mounting plate (3), one end of the upper clamping plate (8) and one end of the lower clamping plate (7) are arranged in the first sliding groove, a second air cylinder is arranged on the surface of the mounting plate (3), and the end of a piston rod of the second air cylinder is connected with the lower clamping plate (7).

10. A membrane gripping structure according to any one of claims 3 to 6, characterized in that the base plate (10) is provided with a second runner in which the first sliding plate (1) slides, the first sliding plate (1) is provided with a third runner in which the second sliding plate (2) slides, and the first sliding plate (1) and the second sliding plate (2) are driven by a third cylinder and a fourth cylinder, respectively.