Positioning clamp for reducing scratches of square lithium ion battery cell diaphragm

Abstract

The utility model discloses a positioning fixture for reducing the scratch of square lithium ion battery cell diaphragm, which is characterized in that the positioning fixture comprises a base, a transverse pushing device and a longitudinal pushing device, the top of the base is longitudinally provided with two parallel first sliding chutes, the top of the base is transversely provided with two parallel second sliding chutes, and the transverse pushing device and the longitudinal pushing device are arranged on the base. A transverse rolling device and a longitudinal rolling device are embedded in the top of the base, the transverse pushing device comprises two second connecting blocks and a second pushing plate, the two second connecting blocks are parallel to each other and are connected through the second pushing plate, and first sliding blocks are arranged at the bottoms of the two second connecting blocks; the transverse pushing device slides on the second sliding groove through the first sliding block, the longitudinal pushing device comprises two first connecting blocks and a first pushing plate, the two first connecting blocks are parallel to each other and connected through the first pushing plate, and the second sliding block is arranged at the bottoms of the two first connecting blocks.

Description

Technical Field

[0001] The utility model relates to the technical field of positioning fixtures, in particular to a positioning fixture used for reducing scratches on a diaphragm of a square lithium-ion battery cell. Background Art

[0002] The assembly line is an important production process for lithium-ion batteries. The general process flow is: the inspection machine detects the weight, size, and short circuit of the battery cell - the pre-welding of the tabs - the butterfly welding - the welding of the connecting piece - the film coating - the spot welding of the shell - the cover welding - the peripheral welding - X-ray - the helium inspection. In the actual processing process, the battery cell needs to be transported and positioned by the fixture to ensure that the forming movement of the battery cell and the workpiece has the correct position and ensures that the position is not changed by external forces. The positioning of the battery cell and the workpiece ensures its processing quality, improves production efficiency and reduces processing costs, which is of great significance.

[0003] During the transportation and positioning of the battery cells from the inspection process to the connection plate welding process, the diaphragm is in direct contact with the fixture. In actual production, there will be a certain concentration of dust particles in the workshop. If these dust particles are deposited on the surface of the base, if the battery cells move on the surface, the diaphragm will be scratched, and even powder will fall off, greatly increasing the insecurity of the battery; the processing accuracy of the base will also affect the surface of the diaphragm. The bumps and uneven surfaces generated during the processing are the culprits for the scratches on the battery cells. At the same time, it is not limited to the influence of external objects. For example, in order to increase its safety and electrical performance, some batteries currently use ceramic coating on one or both sides of the diaphragm to improve the heat resistance and liquid retention performance of the diaphragm. However, this ceramic layer is attached to the surface of the diaphragm base layer through the adhesion of the adhesive. During the positioning of the battery cell, the friction between the battery cell and the base surface will scrape off the ceramic glue, causing the ceramic glue to be deposited on the base surface to form white crystals. This nearby object will scratch the subsequent battery cell diaphragms. In order to clean this white crystal, the cleaning cycle needs to be increased, which will reduce production efficiency.

[0004] Therefore, the utility model provides a positioning fixture for reducing scratches on the diaphragm of a square lithium-ion battery cell to solve the above-mentioned problem. Utility Model Content

[0005] The utility model aims to provide a positioning fixture for reducing scratches on the diaphragm of a square lithium-ion battery cell, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a positioning fixture for reducing scratches on the diaphragm of a square lithium-ion battery cell, characterized in that it includes a base, a lateral pushing device and a longitudinal pushing device, the top of the base is longitudinally provided with two mutually parallel No. 1 slide grooves, the top of the base is transversely provided with two mutually parallel No. 2 slide grooves, the top of the base is inlaid with two sets of horizontal and longitudinal rolling devices, the lateral pushing device includes two No. 2 connecting blocks and a No. 2 push plate, the two No. 2 connecting blocks are parallel to each other and connected by the No. 2 push plate, the bottom of the two No. 2 connecting blocks is provided with a No. 1 slider, the lateral pushing device slides on the No. 2 slide groove through the No. 1 slider, the longitudinal pushing device includes two No. 1 connecting blocks and a No. 1 push plate, the two No. 1 connecting blocks are parallel to each other and connected by the No. 1 push plate, the bottom of the two No. 1 connecting blocks is provided with a No. 2 slider, the longitudinal pushing device slides on the No. 1 slide groove through the No. 2 slider, the left side of the base is provided with a No. 1 limit block, and the front side of the base is provided with a No. 2 limit block.

[0007] Preferably, the lateral rolling device includes a No. 1 rolling groove and a No. 1 roller, a No. 2 limiting groove is provided on both sides of the No. 1 rolling groove, a No. 2 limiting shaft is provided at both ends of the No. 1 roller, the No. 2 limiting shaft extends into the interior of the No. 2 limiting groove and is rotatably installed with the No. 2 limiting groove, and the top of the No. 1 roller is 1 mm higher than the top of the No. 1 rolling groove.

[0008] Preferably, the longitudinal rolling device includes a No. 2 rolling groove and a No. 2 roller, a No. 1 limit groove is provided on both sides of the No. 2 rolling groove, a No. 1 limit shaft is provided at both ends of the No. 2 roller, the No. 1 limit shaft extends into the interior of the No. 1 limit groove, an electric telescopic device is fixedly installed at the bottom of the No. 2 rolling groove, a No. 3 push plate is fixedly installed on the top of the electric telescopic device, the height of the No. 1 limit groove is 2 mm, and the top of the No. 2 roller is tangent to the top of the No. 2 rolling groove.

[0009] Preferably, a sensing device is fixedly installed at a position close to the right side of the top of the base, and a sensing sticker is provided at the bottom of the second push plate.

[0010] Preferably, the bottom of the No. 1 push plate is 2 mm higher than the bottom of the No. 1 connecting block.

[0011] Preferably, the bottom of the second push plate is 3 mm higher than the bottom of the second connecting block.

[0012] Preferably, the outer side walls of the No. 1 push plate and the No. 2 push plate are both fixedly connected with cylinders.

[0013] Beneficial effects of the utility model:

[0014] The utility model can avoid the battery core being scratched by sliding directly on the uneven surface of the base during positioning by arranging a horizontal pushing device, a vertical pushing device and embedding two sets of horizontal and vertical rolling devices on the top of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 It is a top view of the utility model;

[0017] Figure 2 It is a structural schematic diagram of the longitudinal rolling device of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the horizontal rolling device of the utility model;

[0019] Figure 4 It is a structural schematic diagram of the lateral pushing device of the utility model;

[0020] Figure 5 It is a structural schematic diagram of the longitudinal pushing device of the utility model;

[0021] Figure 6 It is a front view of the utility model.

[0022] In the figure: 1. Base; 2. Limit block No. 1; 3. Limit block No. 2; 4. Rolling groove No. 1; 5. Roller No. 1; 6. Rolling groove No. 2; 7. Roller No. 2; 8. Connecting block No. 1; 9. Push plate No. 1; 10. Connecting block No. 2; 11. Push plate No. 2; 12. Induction device; 13. Induction sticker; 14. Slide groove No. 1; 15. Slide groove No. 2; 16. Electric telescopic device; 17. Push plate No. 3; 18. Limiting shaft No. 1; 19. Limiting groove No. 1; 20. Slider No. 1; 21. Slider No. 2; 22. Limiting groove No. 2; 23. Limiting shaft No. 2. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, 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. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model claimed for protection, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0024] The utility model provides Figure 1-6 The positioning fixture for reducing scratches on the diaphragm of a square lithium-ion battery cell shown in the figure comprises a base 1, a lateral pushing device and a longitudinal pushing device. Two mutually parallel No. 1 slide grooves 14 are longitudinally arranged on the top of the base 1, and two mutually parallel No. 2 slide grooves 15 are transversely arranged on the top of the base 1. Two sets of rolling devices, one horizontal and one vertical, are inlaid on the top of the base 1. The lateral pushing device comprises two No. 2 connecting blocks 10 and a No. 2 push plate 11. The two No. 2 connecting blocks 10 are parallel to each other and connected by the No. 2 push plate 11. The two No. 2 connecting blocks 10 are parallel to each other and connected by the No. 2 push plate 11. A No. 1 slider 20 is provided at the bottom of the No. 2 connecting block 10, and the horizontal pushing device slides on the No. 2 slide groove 15 through the No. 1 slider 20. The longitudinal pushing device includes two No. 1 connecting blocks 8 and a No. 1 push plate 9. The two No. 1 connecting blocks 8 are parallel to each other and connected by the No. 1 push plate 9. A No. 2 slider 21 is provided at the bottom of the two No. 1 connecting blocks 8, and the longitudinal pushing device slides on the No. 1 slide groove 14 through the No. 2 slider 21. A No. 1 limit block 2 is provided on the left side of the base 1, and a No. 2 limit block 3 is provided on the front of the base 1.

[0025] Furthermore, the transverse rolling device includes a No. 1 rolling groove 4 and a No. 1 roller 5. No. 2 limiting grooves 22 are provided on both sides of the No. 1 rolling groove 4. No. 2 limiting shafts 23 are provided at both ends of the No. 1 roller 5. The No. 2 limiting shafts 23 extend into the interior of the No. 2 limiting groove 22 and are rotatably installed with the No. 2 limiting groove 22. The top of the No. 1 roller 5 is 1 mm higher than the top of the No. 1 rolling groove 4.

[0026] Furthermore, the longitudinal rolling device includes a No. 2 rolling groove 6 and a No. 2 roller 7. A No. 1 limit groove 19 is provided on both sides of the No. 2 rolling groove 6. A No. 1 limit shaft 18 is provided at both ends of the No. 2 roller 7. The No. 1 limit shaft 18 extends into the interior of the No. 1 limit groove 19. An electric telescopic device 16 is fixedly installed at the bottom of the No. 2 rolling groove 6. A No. 3 push plate 17 is fixedly installed on the top of the electric telescopic device 16. The height of the No. 1 limit groove 19 is 2 mm, and the top of the No. 2 roller 7 is tangent to the top of the No. 2 rolling groove 6.

[0027] Furthermore, a sensing device 12 is fixedly installed at a position near the right side of the top of the base 1 , and a sensing sticker 13 is provided at the bottom of the second push plate 11 . The sensing device 12 can sense the sensing sticker 13 .

[0028] Furthermore, the bottom of the No. 1 push plate 9 is 2 mm higher than the bottom of the No. 1 connecting block 8 , which can prevent the bottom of the No. 1 push plate 9 from contacting the top of the No. 1 roller 5 , thereby affecting the movement of the No. 1 push plate 9 itself.

[0029] Furthermore, the bottom of the second push plate 11 is 3 mm higher than the bottom of the second connecting block 10 , which can prevent the bottom of the second push plate 11 from contacting the top of the first roller 5 , thereby affecting the movement of the second push plate 11 itself.

[0030] Furthermore, the outer side walls of the first push plate 9 and the second push plate 11 are both fixedly connected with cylinders.

[0031] Working principle:

[0032] In the actual working process, when the battery cell is sent to the base 1 by the transfer fixture, after the photoelectric identification of the battery cell, the No. 1 push plate 9 moves towards the direction close to the No. 2 limit block 3 under the push of the cylinder, and the No. 2 slider 21 at the bottom of the No. 1 connecting block 8 slides in the No. 1 slide groove 14. Since a rotatable No. 1 roller 5 is provided in the No. 1 rolling groove 4, and the top of the No. 1 roller 5 is 1mm higher than the top of the No. 1 rolling groove 4, the No. 1 push plate 9 pushes the battery cell to slide on the No. 1 roller 5, so that the front end of the battery cell contacts the No. 2 limit block 3. After the longitudinal push is completed, the No. 1 push plate 9 moves away from the No. 2 limit block 3 under the action of the cylinder; then the No. 2 push plate 11 moves towards the direction close to the No. 1 limit block 2 under the action of the cylinder, and the No. 1 slider 20 at the bottom of the No. 2 connecting block 10 slides in the No. 2 slide groove 15. When the top of the base 1 is close to the induction device at the right position When the sensor 13 at the bottom of the second push plate 11 is detected by the device 12, the electric telescopic device 16 works, and the second roller 7 is pushed upward by the third push plate 17 until the top of the first limit shaft 18 on both sides of the second roller 7 contacts the top of the first limit groove 19. At this time, the top of the second roller 7 is 2mm higher than the top of the second rolling groove 6. Therefore, the second push plate 11 pushes the battery cell to slide on the second roller 7, so that the left end of the battery cell contacts the first limit block 2, and the horizontal push ends, that is, the battery cell positioning is completed. The second push plate 11 moves away from the first limit block 2 under the action of the cylinder. When the sensor 12 at the top of the base 1 near the right position detects the sensor 13 at the bottom of the second push plate 11 again, the electric telescopic device 16 works, the third push plate 17 moves downward, and the second roller 7 falls back into the second rolling groove 6. Finally, the transfer fixture transports the battery cell to the next process.

[0033] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A positioning fixture for reducing scratches on the diaphragm of a square lithium-ion battery cell. It is characterized in that The invention comprises a base (1), a transverse pushing device and a longitudinal pushing device, wherein the top of the base (1) is longitudinally provided with two mutually parallel No. 1 slide grooves (14), the top of the base (1) is transversely provided with two mutually parallel No. 2 slide grooves (15), the top of the base (1) is inlaid with two sets of transverse and longitudinal rolling devices, the transverse pushing device comprises two No. 2 connecting blocks (10) and a No. 2 push plate (11), the two No. 2 connecting blocks (10) are parallel to each other and connected by the No. 2 push plate (11), the bottoms of the two No. 2 connecting blocks (10) are provided with a No. 1 sliding block (2 0), the lateral pushing device slides on the No. 2 slide groove (15) through the No. 1 slider (20), the longitudinal pushing device comprises two No. 1 connecting blocks (8) and a No. 1 push plate (9), the two No. 1 connecting blocks (8) are parallel to each other and connected through the No. 1 push plate (9), a No. 2 slider (21) is provided at the bottom of the two No. 1 connecting blocks (8), the longitudinal pushing device slides on the No. 1 slide groove (14) through the No. 2 slider (21), a No. 1 limit block (2) is provided on the left side of the base (1), and a No. 2 limit block (3) is provided on the front side of the base (1).

2. A positioning fixture for reducing scratches on a diaphragm of a square lithium-ion battery cell according to claim 1, Features: The lateral pushing device comprises a No. 1 rolling groove (4) and a No. 1 roller (5), wherein two sides of the No. 1 rolling groove (4) are provided with a No. 2 limiting groove (22), and two ends of the No. 1 roller (5) are provided with a No. 2 limiting shaft (23), wherein the No. 2 limiting shaft (23) extends into the interior of the No. 2 limiting groove (22) and is rotatably mounted with the No. 2 limiting groove (22), and the top of the No. 1 roller (5) is 1 mm higher than the top of the No. 1 rolling groove (4).

3. A positioning fixture for reducing scratches on a diaphragm of a square lithium-ion battery cell according to claim 1, Features: The longitudinal pushing device comprises a No. 2 rolling groove (6) and a No. 2 roller (7), a No. 1 limiting groove (19) is provided on both sides of the No. 2 rolling groove (6), a No. 1 limiting shaft (18) is provided at both ends of the No. 2 roller (7), the No. 1 limiting shaft (18) extends into the interior of the No. 1 limiting groove (19), an electric telescopic device (16) is fixedly installed at the bottom of the interior of the No. 2 rolling groove (6), a No. 3 push plate (17) is fixedly installed at the top of the electric telescopic device (16), the height of the No. 1 limiting groove (19) is 2 mm, and the top of the No. 2 roller (7) is tangent to the top of the No. 2 rolling groove (6).

4. A positioning fixture for reducing scratches on a diaphragm of a square lithium-ion battery cell according to claim 1, Features: A sensing device (12) is fixedly mounted on the top of the base (1) near the right side, and a sensing sticker (13) is provided on the bottom of the second push plate (11).

5. A positioning fixture for reducing scratches on a diaphragm of a square lithium-ion battery cell according to claim 1, Features: The bottom of the No. 1 push plate (9) is 2 mm higher than the bottom of the No. 1 connecting block (8).

6. A positioning fixture for reducing scratches on a diaphragm of a square lithium-ion battery cell according to claim 1, Features: The bottom of the No. 2 push plate (11) is 3 mm higher than the bottom of the No. 2 connecting block (10).

7. A positioning fixture for reducing scratches on a diaphragm of a square lithium-ion battery cell according to claim 1, Features: The outer side walls of the first push plate (9) and the second push plate (11) are both fixedly connected with cylinders.

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