Pressing tool

Abstract

The invention relates to a hold-down fixture, which is applied to battery piece series connection equipment and comprises a frame, an elastic assembly and at least two first pressing pieces, each first pressing piece comprises a pressing strip and a plurality of protrusions arranged on the two sides of the pressing strip in the length direction, all the pressing strips extend in the first horizontal direction, all the protrusions extend in the second horizontal direction, the multiple first pressing pieces are arranged in the second horizontal direction at intervals, and the second horizontal direction is perpendicular to the first horizontal direction; each pressing strip is connected to the lower portion of the frame in an up-down floating mode through an elastic assembly. When the hold-down device is used for producing battery piece series connection equipment of a battery string with an adhesive film, the hold-down strips of every two adjacent first hold-down pieces are located on the two sides of one welding strip respectively, and the protrusions between every two adjacent hold-down strips clamp the welding strip in the gap between the protrusions; the protrusions on the pressing strips can flatten adhesive films close to the two sides of the welding strips, the pressing strips can flatten the adhesive films between the two welding strips, and therefore the pressing and pasting effect of the adhesive films can be guaranteed.

Description

Technical Field

[0001] This application relates to the field of solar photovoltaic cell production, specifically a type of press. Background Technology

[0002] A battery string typically consists of battery cells and solder ribbons, with the ribbons connecting adjacent cells. During battery cell stringing, to prevent the solder ribbons from shifting on the cells, a pressure fixture is usually used to position them. A typical pressure fixture includes a frame and multiple rows of pressure pins mounted below the frame. Each row of pressure pins contains multiple spaced-apart pressure pins that press the solder ribbons one-to-one onto the battery cells, thus positioning the solder ribbons.

[0003] Existing technology also includes a type of battery string with an adhesive film. This type of battery string has an adhesive film attached to the outside of the solder ribbon, which covers and bonds the solder ribbon to the surface of the battery cells. When using a conventional press with pins for positioning this type of battery string with an adhesive film, the pins in the pin row are spaced apart, and the contact area between the pins and the adhesive film is small. Therefore, the press cannot fully press the adhesive film, and air bubbles easily form between the adhesive film and the battery cells, affecting the adhesion between the adhesive film and the battery cells. Summary of the Invention

[0004] This application addresses the problem of poor pressing effect of existing pressing tools by providing a pressing tool with better pressing effect.

[0005] The technical solution of this application is as follows: A clamping tool, applied in a battery cell stringing device, includes a frame, an elastic component, and at least two first clamping members; wherein:

[0006] The first clamping element includes a clamping strip and a plurality of protrusions arranged on both sides of the clamping strip along its length. Each clamping strip extends along a first horizontal direction, and each protrusion extends along a second horizontal direction. The plurality of first clamping elements are arranged at intervals along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction.

[0007] Each pressure strip is connected to the bottom of the frame by a flexible component that allows it to float up and down.

[0008] When the press in this application is used in a battery cell stringing device to produce battery strings with adhesive film, the pressure strips of two adjacent first pressing members are respectively located on both sides of a welding strip, and the protrusion between the two adjacent pressure strips clamps the welding strip in the gap between the protrusions; the protrusions on the pressure strip can flatten the adhesive film near both sides of the welding strip, and the pressure strip can flatten the adhesive film between the two welding strips, thereby ensuring the pressing effect of the adhesive film and preventing air bubbles from forming between the adhesive film and the battery cell; in addition, the groove formed between two adjacent sets of protrusions can play a role in light transmission, which can increase the heat-receiving area of ​​the battery cell and thus heat the adhesive film more quickly.

[0009] Optionally, the protrusions on the sides of two adjacent pressure strips that are close to each other are arranged in pairs at intervals, and the gap between at least one pair of protrusions is smaller than the gap between other pairs of protrusions.

[0010] In the pair of protrusions between two adjacent pressure strips, by setting the gap between at least one pair of protrusions to be smaller than the gap between other pairs of protrusions, the protrusions with smaller gaps will limit the swing amplitude of the pressure strip after clamping the welding rod, ensuring that the pressure fixture can accurately press the welding strip.

[0011] Optionally, the length of the protrusions at both ends of each pressure strip along its length is greater than the length of the protrusion in the middle of the pressure strip, so that the first gap between the pairs of protrusions at both ends of two adjacent pressure strips is smaller than the second gap between the pairs of protrusions in the middle.

[0012] Pairs of small-gap protrusions are placed at both ends of the pressure strip along its length to facilitate production and manufacturing.

[0013] Optionally, the pair of protrusions that at least partially form the first gap are located below the orthographic projection of the frame.

[0014] Placing paired protrusions with small gaps below the orthographic projection of the frame can avoid obstructing the light-transmitting area of ​​the frame and improve the light transmittance of the frame.

[0015] Optionally, the elastic component includes a guide post, a limiting member, and an elastic member. The top end of the guide post extends upward through the frame. The limiting member is installed at the top end of the guide post and prevents the guide post from detaching from the frame. The bottom end of the guide post is fixed to the pressure strip. The elastic member is sleeved on the guide post. The first end of the elastic member abuts against the frame, and the second end of the elastic member abuts against the pressure strip. The elastic member moves the pressure strip away from the frame.

[0016] The elastic component adopts a combination of guide posts, limiting parts and elastic parts. The structure is simple and can easily realize the up and down floating of the pressure bar, so that the pressure bar can better press the welding strip onto the battery cell.

[0017] Optionally, the material of the pressure strip and the protrusions is flexible, or the bottom surfaces of the pressure strip and the multiple protrusions are covered with pads made of flexible material.

[0018] Both flexible materials and pads made of flexible materials can deform, allowing the pressure strip to better conform to the material being compressed.

[0019] Optionally, the frame includes two support blocks and multiple crossbeams, with the multiple crossbeams spaced apart between the two support blocks along a first horizontal direction. The two support blocks are located on the sides of at least two first clamping members, and the multiple crossbeams are located above the first clamping members. Each clamping strip is mounted on the multiple crossbeams in a way that allows it to float up and down via an elastic component.

[0020] The frame is composed of support blocks and crossbeams, which are sturdy. The crossbeams form through holes, which allow light above the press to pass through better, thereby heating the adhesive film and battery cells below the press more efficiently and ensuring the adhesive film's bonding effect.

[0021] Optionally, the frame also includes multiple reinforcing ribs, which are staggered between the multiple crossbeams, with each reinforcing rib having its two ends fixed to two adjacent crossbeams.

[0022] The strength and stability of the frame can be increased by adding reinforcing ribs between multiple beams.

[0023] Optionally, multiple protrusions between two adjacent pressure strips are arranged in an alternating pattern.

[0024] It provides an alternative arrangement of multiple protrusions on adjacent molding strips, increasing the flexibility of choice.

[0025] Optionally, the clamping device further includes a second clamping member located on one side of the first clamping member along a second horizontal direction;

[0026] The second clamping component includes a pressure plate and a rotating mechanism. The rotating mechanism is rotatably mounted on the frame, and the pressure plate is mounted on the rotating mechanism. The rotating mechanism is at least used to drive the pressure plate to rotate, so that the bottom surface of the pressure plate rotates from a surface higher than the bottom surface of the pressure strip to a surface flush with the bottom surface of the pressure strip.

[0027] By arranging a second clamping member on one side of the first clamping member, when the press is used in the battery cell stringing equipment, the rotation mechanism of the second clamping member is first operated to raise the bottom surface of the pressure plate of the second clamping member and put it in an inclined state. At this time, the first clamping member presses against the part of the solder strip that is not clamped, and the pressure plate is located above the part of the solder strip that is clamped, avoiding the clamping end of the solder strip. Then, the clamping chuck of the solder strip is removed, and the rotation mechanism is operated again to lower the bottom surface of the pressure plate to a horizontal state, so that the pressure plate presses the end of the solder strip tightly, thereby ensuring that the end of the solder strip can be pasted on the battery cell, enhancing the pressing effect of the press and ensuring the quality of the battery string. Attached Figure Description

[0028] Figure 1 This is a front view of one optional embodiment of this application;

[0029] Figure 2 for Figure 1 Top view;

[0030] Figure 3 for Figure 1 A bottom view;

[0031] Figure 4 for Figure 1 AA section view in the middle;

[0032] Figure 5 for Figure 1 BB section view in the middle;

[0033] Figure 6 for Figure 1 The diagram shows the usage status of the press.

[0034] Figure 7 for Figure 6 The main view.

[0035] Figures 1 to 7 Including:

[0036] Press 1;

[0037] Frame 10, support block 11, crossbeam 12, reinforcing rib 13;

[0038] Elastic component 20;

[0039] First clamping element 30, pressure strip 31, protrusion 32, first gap 33, second gap 34;

[0040] Second clamping member 40, pressure plate 41, flexible layer 411, second limiting part 412, rotating mechanism 42, mounting base 421, pressing member 422, spring 423, rotating shaft 424, first limiting part 425;

[0041] First horizontal direction 101, second horizontal direction 102, welding strip 103, battery cell 104, encapsulant film 105;

[0042] Gripper 200. Detailed Implementation

[0043] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, the application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] like Figures 1-5 As shown, this application discloses a clamping fixture 1, used in a battery cell stringing device, comprising a frame 10, an elastic component 20, and at least two first clamping members 30; wherein:

[0045] The first pressing member 30 includes a pressing strip 31 and a plurality of protrusions 32 arranged on both sides of the pressing strip 31 along the length direction. Each pressing strip 31 extends along the first horizontal direction 101, and each protrusion 32 extends along the second horizontal direction 102. The plurality of first pressing members 30 are arranged at intervals along the second horizontal direction 102, and the second horizontal direction 102 is perpendicular to the first horizontal direction 101.

[0046] Each pressure strip 31 is connected to the bottom of the frame 10 in a floating manner via an elastic component 20.

[0047] When the presser 1 in this application is used in a battery cell stringing device for producing battery strings with adhesive film, the pressure strips 31 of two adjacent first pressing members 30 are respectively located on both sides of a welding strip 103, and the protrusions 32 between the two adjacent pressure strips 31 clamp the welding strip 103 in the gap between the protrusions 32; the protrusions 32 on the pressure strip 31 can flatten the adhesive film near both sides of the welding strip 103, and the pressure strip 31 can flatten the adhesive film between the two welding strips 103, thereby ensuring the pressing effect of the adhesive film and preventing air bubbles from forming between the adhesive film and the battery cell; in addition, the groove formed between two adjacent sets of protrusions 32 can play a role in light transmission, which can increase the heat-receiving area of ​​the battery cell and thus heat the adhesive film more quickly.

[0048] In one embodiment, optionally, the protrusions 32 on the sides of two adjacent pressure strips 31 that are close to each other are arranged in pairs at intervals, and the gap between at least one pair of protrusions 32 is smaller than the gap between other pairs of protrusions 32.

[0049] In the pair of protrusions 32 between two adjacent pressure strips 31, by setting the gap between at least one pair of protrusions 32 to be smaller than the gap between other pairs of protrusions 32, the protrusions 32 with the smaller gap will limit the swing amplitude of the pressure strip 31 after clamping the welding rod, ensuring that the pressure fixture 1 can accurately press the welding strip 103.

[0050] In another embodiment, optionally, the protrusions 32 at both ends of each pressure strip 31 are longer than the protrusions 32 in the middle of the pressure strip 31, so that the first gap 33 between the pairs of protrusions 32 at both ends of two adjacent pressure strips 31 is smaller than the second gap 34 between the pairs of protrusions 32 in the middle.

[0051] The pair of protrusions 32 with small gaps are set at both ends of the pressure strip 31 along its length, which facilitates production and manufacturing.

[0052] In this embodiment, optionally, the pair of protrusions 32 that at least partially form the first gap 33 are located below the orthographic projection of the frame 10.

[0053] By placing the paired protrusions 32 with small gaps below the orthographic projection of the frame 10, the light-transmitting area of ​​the frame 10 can be avoided, thereby improving the light transmittance of the frame 10.

[0054] In one embodiment, optionally, the pressure strip 31 and the protrusions 32 are made of flexible material, or the bottom surfaces of the pressure strip 31 and the plurality of protrusions 32 are covered with pads made of flexible material.

[0055] Both flexible materials and pads made of flexible materials can deform, allowing the pressure strip 31 to better conform to the material being compressed.

[0056] In one embodiment, optionally, a plurality of protrusions 32 between two adjacent pressure strips 31 are arranged in an alternating pattern.

[0057] Another arrangement of multiple protrusions 32 on adjacent pressure strips 31 is provided, increasing the flexibility of selection.

[0058] As an optional implementation method, such as Figure 4 , Figure 5 As shown, the elastic component 20 includes a guide post, a limiting member, and an elastic member. The top end of the guide post extends upward through the frame 10. The limiting member is installed at the top end of the guide post and prevents the guide post from detaching from the frame 10. The bottom end of the guide post is fixed on the pressure strip 31. The elastic member is sleeved on the guide post. The first end of the elastic member abuts against the frame 10, and the second end of the elastic member abuts against the pressure strip 31. The elastic member moves the pressure strip 31 away from the frame 10.

[0059] The elastic component 20 adopts a combination of guide posts, limiting parts and elastic parts, which has a simple structure and can easily realize the up and down floating of the pressure strip 31, so that the pressure strip 31 can better press the welding strip 103 onto the battery cell.

[0060] like Figures 1-3 As shown, optionally, the frame 10 includes two support blocks 11 and multiple crossbeams 12. The multiple crossbeams 12 are spaced apart between the two support blocks 11 along a first horizontal direction 101. The two support blocks 11 are located on both sides of at least two first clamping members 30. The multiple crossbeams 12 are located above the first clamping members 30. Each pressure bar 31 is mounted on the multiple crossbeams 12 in a way that allows it to float up and down via an elastic component 20.

[0061] The frame 10 is composed of support blocks 11 and crossbeams 12, which are sturdy and form through holes between each crossbeam 12. The through holes allow light above the presser 1 to pass through better, thereby heating the adhesive film and battery cells below the presser 1 more efficiently and ensuring the adhesive film bonding effect.

[0062] Optionally, the frame 10 also includes multiple reinforcing ribs 13, which are staggered between multiple crossbeams 12, with each reinforcing rib 13 having its two ends fixed to two adjacent crossbeams 12 respectively.

[0063] By adding reinforcing ribs 13 between multiple crossbeams 12, the strength and stability of the frame 10 can be increased.

[0064] As an optional implementation, the clamp 1 further includes a second clamping member 40, which is located on one side of the first clamping member 30 along the second horizontal direction 102;

[0065] The second clamping member 40 includes a pressure plate 41 and a rotating mechanism 42. The rotating mechanism 42 is rotatably mounted on the frame 10, and the pressure plate 41 is mounted on the rotating mechanism 42. The rotating mechanism 42 is at least used to drive the pressure plate 41 to rotate, so that the bottom surface of the pressure plate 41 rotates from a surface higher than the bottom surface of the pressure strip 31 to a surface flush with the bottom surface of the pressure strip 31.

[0066] By arranging a second clamping member 40 on one side of the first clamping member 30, when the press 1 is used for the battery cell stringing device, the rotation mechanism 42 of the second clamping member 40 is first operated to raise the bottom surface of the pressure plate 41 of the second clamping member 40 and put it in an inclined state. At this time, the first clamping member 30 presses against the unclamped part of the welding strip 103, and the pressure plate 41 is located above the clamped part of the welding strip 103, avoiding the clamping end of the welding strip 103. Then, the clamping chuck of the welding strip 103 is removed, and the rotation mechanism 42 is operated to lower the bottom surface of the pressure plate 41 to a horizontal state, so that the pressure plate 41 presses the end of the welding strip 103, thereby ensuring that the end of the welding strip 103 can be pasted on the battery cell, enhancing the pressing effect of the press 1 and ensuring the quality of the battery string.

[0067] As an optional implementation method, such as Figure 4 , Figure 5 As shown, the rotating mechanism 42 includes a mounting base 421, a pressing member 422, and a spring 423.

[0068] Mounting base 421 is mounted on frame 10. Pressing member 422 is rotatably mounted on frame 10 via pivot 424. Pressing member 422 is located below mounting base 421. Pressure plate 41 is connected to one side of pressing member 422. The two ends of spring 423 are respectively abutted between pressure plate 41 and mounting base 421.

[0069] When the pressing member 422 is pressed down, the bottom surface of the pressure plate 41 is tilted upward; after the pressing member 422 is released, the spring 423 makes the bottom surface of the pressure plate 41 horizontal.

[0070] Pressing the pressing element 422 causes the pressure plate 41 to flip, and the spring 423 resets the pressure plate 41. The structure is simple and the operation is flexible.

[0071] In this embodiment, optionally, the mounting base 421 is provided with a downwardly protruding first limiting part 425 near the pressing end of the pressing member 422, and the pressure plate 41 is provided with an upwardly protruding second limiting part 412 corresponding to the position of the mounting base 421. The first limiting part 425 and the second limiting part 412 are respectively located on both sides of the rotating shaft 424.

[0072] The first limiting part 425 contacts the pressing member 422 when the pressing member 422 is in its natural state, so that the bottom surface of the pressure plate 41 is in a horizontal state; the second limiting part 412 contacts the side of the mounting base 421 when the pressing member 422 is in the pressing state, so as to limit the rotation angle of the pressure plate 41.

[0073] When the pressing member 422 is in its natural state, the first limiting part 425 restricts the rotation of the pressure plate 41 to prevent the rotation angle of the pressure plate 41 from being too large; when the pressing member 422 is pressed to make the pressure plate 41 rotate, the second limiting part 242 stops the rotation of the pressure plate 41 to prevent the pressure plate 41 from damaging the spring 423 due to excessive rotation.

[0074] In one embodiment, optionally, there are two sets of rotating mechanisms 42, located at both ends of the pressure plate 41.

[0075] By setting two sets of rotating mechanisms 42 to rotate the pressure plate 41, it can be ensured that the pressure plate 41 can rotate smoothly, and the off-center load when only one set of rotating mechanisms 42 is in operation can be avoided.

[0076] In one embodiment, optionally, a flexible layer 411 is provided at the bottom of the pressure plate 41.

[0077] Both the flexible material and the flexible layer 411 can deform, allowing the pressure plate 41 to better conform to the material being pressed.

[0078] like Figure 6 , Figure 7 As shown in the figure, as one embodiment, this application includes a first clamping member 30 and a second clamping member 40. The working process for producing battery strings with adhesive film is as follows: Before placing the clamping mold 1 and the front adhesive film 105, the traction gripper 200 has already clamped the welding strip 103. The conveying device moves the clamping mold 1 and the front adhesive film 105 onto the welding strip 103. At this time, the pressure bar 21 of the first clamping member 30, which is in a lower position, first presses the adhesive film 105 onto the battery cell 104. The pressure plate 41 of the second clamping member 40 is located at the traction gripper 30. Above the clamping end of the traction claw 200, the edge of the front adhesive film 105 rests on the supporting surface of the traction claw 200; then the transport device releases the pressure 1, and the pressing member 422 of the rotating mechanism 42 loses the pressing of the transport device, so the pressure plate 41 rotates downward, pressing the edge of the front adhesive film 105 against the supporting surface of the traction claw 200. After the traction claw 200 releases the welding strip 103 and removes it horizontally, the pressure plate 41 presses the ends of the adhesive film 105 and the welding strip 103 onto the battery cell 104.

[0079] The foregoing has provided a sufficiently detailed and specific description of this application. Those skilled in the art should understand that the descriptions in the embodiments are merely exemplary, and all changes made without departing from the true spirit and scope of this application should fall within the protection scope of this application. The scope of protection claimed in this application is defined by the claims, and not by the above descriptions in the embodiments.

Claims

1. A press, characterized in that, The clamping tool is used in a battery cell stringing device. The clamping tool includes a frame, an elastic component, and at least two first clamping members; wherein: The first clamping member includes a pressure strip and a plurality of protrusions arranged on both sides of the pressure strip along its length direction. Each pressure strip extends along a first horizontal direction, and each protrusion extends along a second horizontal direction. The plurality of the first clamping members are arranged at intervals along the second horizontal direction, and the second horizontal direction is perpendicular to the first horizontal direction. Each of the pressure strips is connected to the bottom of the frame via the elastic component, which can float up and down.

2. The press according to claim 1, characterized in that, The protrusions on the sides of two adjacent pressure strips are arranged in pairs at intervals, and the gap between at least one pair of protrusions is smaller than the gap between other pairs of protrusions.

3. The press according to claim 2, characterized in that, The length of the protrusions at both ends of each pressure strip is greater than the length of the protrusion in the middle of the pressure strip, so that the first gap between the pairs of protrusions at both ends of two adjacent pressure strips is smaller than the second gap between the pairs of protrusions in the middle.

4. The press according to claim 3, characterized in that, The paired protrusions that at least partially form the first gap are located below the orthographic projection of the frame.

5. The press according to claim 1, characterized in that, The elastic component includes a guide post, a limiting member, and an elastic element. The top end of the guide post extends upward through the frame. The limiting member is installed at the top end of the guide post and prevents the guide post from detaching from the frame. The bottom end of the guide post is fixed to the pressure strip. The elastic element is sleeved on the guide post. The first end of the elastic element abuts against the frame, and the second end of the elastic element abuts against the pressure strip. The elastic element causes the pressure strip to move away from the frame.

6. The press according to claim 1, characterized in that, The pressure strip and the protrusion are made of flexible material, or the bottom surface of the pressure strip and the protrusions are covered with pads made of flexible material.

7. The press according to claim 1, characterized in that, The frame includes two support blocks and multiple crossbeams. The multiple crossbeams are spaced apart between the two support blocks along the first horizontal direction. The two support blocks are located on both sides of the at least two first clamping members. The multiple crossbeams are located above the first clamping members. Each pressure bar is mounted on the multiple crossbeams in a way that allows it to float up and down via the elastic component.

8. The press according to claim 7, characterized in that, The frame also includes multiple reinforcing ribs, which are arranged alternately between the multiple crossbeams, with each reinforcing rib having its two ends fixed to two adjacent crossbeams.

9. The press according to claim 1, characterized in that, Multiple protrusions are arranged alternately between two adjacent pressure strips.

10. The press according to claim 1, characterized in that, The clamping device further includes a second clamping member, which is located on one side of the first clamping member along the second horizontal direction; The second clamping member includes a pressure plate and a rotating mechanism. The rotating mechanism is rotatably mounted on the frame, and the pressure plate is mounted on the rotating mechanism. The rotating mechanism is at least used to drive the pressure plate to rotate, so that the bottom surface of the pressure plate rotates from a surface higher than the bottom surface of the pressure strip to a surface flush with the bottom surface of the pressure strip.

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