Intelligent assembly device for battery processing

Abstract

The present invention relates to an intelligent assembly device for battery processing applied in the field of battery processing, comprising a chassis, a movable table is slidably connected inside the chassis, a stacking table and four chucks are fixedly connected to the top of the movable table, the four chucks are respectively located at four corners of the stacking table, the chuck comprises a driving seat, a side wall of the driving seat is fixedly connected to an electric push rod, an output end of the electric push rod is fixedly connected to a connecting block, a bottom end of the driving seat is fixedly connected to a bottom plate, a side wall of the connecting block is rotatably connected to a rotating drum, an outer wall of the rotating drum is fixedly connected to a gear, and the top of the bottom plate is fixedly connected to a rack. By using a lower pressure sensor and an upper pressure sensor to detect the displacement of the pole piece, the alignment state of the pole piece can be monitored in real time to ensure that the edges of the pole piece remain flush during the battery stacking process, avoid dislocation or uneven stacking, thereby improving the performance and stability of the battery and improving the intelligent effect of the stacking machine when working.

Description

Technical Field

[0001] The invention relates to an intelligent assembly device, in particular to an intelligent assembly device for battery processing applied in the field of battery processing. Background Art

[0002] Battery stacking usually refers to the process of stacking multiple battery cells or battery cells together during the battery manufacturing process to increase the capacity or voltage of the battery. The stacking of battery cells needs to be precisely aligned to avoid misalignment or uneven stacking, so as to ensure the stability and safety of battery performance.

[0003] At present, in the manufacturing process of lithium batteries, a stacking machine is usually used to stack the positive and negative electrodes and diaphragms of lithium battery cells in a "Z" shape to make a battery cell. The commonly used stacking method is that the left and right sheet-taking mechanical arms of the lithium battery stacking machine grab the electrodes in the positive and negative electrode material troughs, and alternately place the materials on the stacking table after being positioned on the secondary positioning workbench. The diaphragm clamp swings between the two mechanical arms to cooperate with the movements of the two sheet-taking mechanical arms. After stacking a piece of negative electrode sheet, it moves to the positive electrode for stacking, and makes the diaphragm form a "Z" shape to separate the positive and negative electrode sheets. After the diaphragm wrapped outside the electrode group reaches the set number of turns, the cutter cuts the diaphragm for the final gluing, and the equipment enters the assembly of the next electrode group, and then sticks tape on the electrode group that has been wrapped with the diaphragm to form a complete battery cell.

[0004] A Chinese patent with publication number CN118763295A discloses a battery stacking machine, which uses an electromagnet, a pushing permanent magnet and a positioning plate to clamp the electrode sheet. When the pressing sheet clamps the electrode sheet, the edge of the electrode sheet needs to be flush with the edge of the pressing sheet. In this way, the overall compactness of the laminated battery can be ensured during stacking. When the edge of the electrode sheet is not flush with the edge of the pressing sheet, the laminated battery may become loose or the laminate may fold. Summary of the invention

[0005] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is that when the edge of the pole piece is not flush with the edge of the pressing sheet, the laminated battery may become loose or the laminate may fold.

[0006] To solve the above problems, the present invention provides an intelligent assembly device for battery processing, including a chassis, a movable table is slidably connected inside the chassis, a stacking table and four chucks are fixedly connected to the top of the movable table, the four chucks are respectively located at the four corners of the stacking table, the chuck includes a driving seat, a side wall of the driving seat is fixedly connected to an electric push rod, the output end of the electric push rod is fixedly connected to a connecting block, the bottom end of the driving seat is fixedly connected to a bottom plate, the side wall of the connecting block is rotatably connected to a rotating drum, the outer wall of the rotating drum is fixedly connected to a gear, the top of the bottom plate is fixedly connected to a rack, the gear and the rack are meshed, the bottom end of the rotating drum is fixedly connected to a support plate elastic sheet, the outer wall of the rotating drum is provided with two mounting grooves, the inner walls of the two mounting grooves are respectively fixedly connected to a lower pressure sensor and an upper pressure sensor, and the upper pressure sensor is located on the upper side of the lower pressure sensor.

[0007] As a further improvement of the present application, the driving seat is a two-axis moving assembly that can move up and down and left and right, and is used to drive the rotating drum and the support plate elastic sheet to move along a U-shaped trajectory.

[0008] As a further improvement of the present application, one end of the lower pressure sensor away from the inner wall of the mounting groove is flush with the cylindrical surface of the rotating drum, and one end of the upper pressure sensor away from the inner wall of the mounting groove is located on the outside of the cylindrical surface of the rotating drum. Specifically, the length of the upper pressure sensor located on the outside of the cylindrical surface of the rotating drum is equal to the thickness of the support plate elastic sheet.

[0009] As a further improvement of the present application, the inner wall of the chassis is rotatably connected to a material tray, the chassis is located at the lower side of the material tray and is rotatably connected to two guide rollers, and the chassis is fixedly connected to a rotating motor between the material tray and the guide rollers.

[0010] As another improvement of the present application, the output end of the rotating motor is fixedly connected to a swing arm, and one end of the swing arm away from the rotating motor is rotatably connected to a tensioning roller.

[0011] As another improved supplement of the present application, a diaphragm is wound around the outer wall of the material tray, the diaphragm passes through two guide rollers and is transmission-connected thereto, and one end of the tensioning roller close to the diaphragm is in contact with the diaphragm and is transmission-connected thereto.

[0012] In summary, by using the lower pressure sensor and the upper pressure sensor to detect the displacement of the pole piece, the alignment status of the pole piece can be monitored in real time to ensure that the edges of the pole piece remain flush during the battery stacking process, avoiding misalignment or uneven stacking, thereby improving the performance and stability of the battery and improving the intelligent effect of the stacking machine when it is working. Through the two detection methods, it can be adapted to different stacking detection requirements, thereby improving the practicality of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front cross-sectional view of the chassis in the first, second, third and fourth embodiments of the present application;

[0014] Figure 2 It is a three-dimensional diagram of the stacking position in the first, second, third and fourth embodiments of the present application;

[0015] Figure 3 This is a state diagram when the lower pressure sensor is located inside the pole piece in the first, second, third and fourth embodiments of the present application;

[0016] Figure 4 It is a three-dimensional diagram of the electric push rod in the first, second, third and fourth embodiments of the present application;

[0017] Figure 5 This is a state diagram when the lower pressure sensor is located outside the pole piece in the first, second, third and fourth embodiments of the present application;

[0018] Figure 6 It is a side view of the support plate elastic sheet clamping the pole piece in the first, second, third and fourth embodiments of the present application;

[0019] Figure 7 This is a state diagram of the first, second, third and fourth embodiments of the present application in which the pole piece is not offset and the drum is rotating;

[0020] Figure 8 This is a state diagram after the pole piece is offset to the left and the drum rotates in the first, second, third and fourth embodiments of the present application;

[0021] Fig. 9 This is a state diagram of the second and fourth embodiments of the present application when the pole piece is not offset and the diaphragm pulls the support plate elastic sheet to fit the rotating drum;

[0022] Fig.10 This is a state diagram of the second and fourth embodiments of the present application when the pole piece is offset to the right and the diaphragm pulls the support plate elastic sheet to fit the rotating drum;

[0023] Fig.11 This is a state diagram when the pole piece is offset to the left and the diaphragm pulls the support plate elastic sheet to fit the rotating drum in the second and fourth embodiments of the present application.

[0024] Description of the numbers in the figure:

[0025] 1. Chassis; 2. Movable table; 3. Stacking table; 4. Chuck; 401. Drive seat; 402. Electric push rod; 403. Bottom plate; 404. Connecting block; 405. Rotating drum; 406. Gear; 407. Rack; 408. Lower pressure sensor; 409. Support plate elastic sheet; 410. Upper pressure sensor; 5. Material tray; 6. Guide roller; 7. Rotating motor; 701. Swing arm; 702. Tensioning roller; 8. Diaphragm. DETAILED DESCRIPTION

[0026] Four implementation modes of the present application are described in detail below with reference to the accompanying drawings.

[0027] The first implementation method:

[0028] Figure 1-Figure 8 The invention shows an intelligent assembly device for battery processing, comprising a chassis 1, a movable platform 2 is slidably connected inside the chassis 1, a stacking platform 3 and four chucks 4 are fixedly connected to the top of the movable platform 2, and the four chucks 4 are respectively located at the four corners of the stacking platform 3. The chuck 4 comprises a driving seat 401, a side wall of the driving seat 401 is fixedly connected to an electric push rod 402, an output end of the electric push rod 402 is fixedly connected to a connecting block 404, a bottom end of the driving seat 401 is fixedly connected to a bottom plate 403, and a side wall of the connecting block 404 is fixedly connected to the bottom plate 403. A rotating drum 405 is rotatably connected, a gear 406 is fixedly connected to the outer wall of the rotating drum 405, a rack 407 is fixedly connected to the top of the bottom plate 403, the gear 406 and the rack 407 are meshed, a support plate elastic sheet 409 is fixedly connected to the bottom end of the rotating drum 405, two mounting grooves are provided on the outer wall of the rotating drum 405, a lower pressure sensor 408 and an upper pressure sensor 410 are fixedly connected to the inner walls of the two mounting grooves, and the upper pressure sensor 410 is located on the upper side of the lower pressure sensor 408.

[0029] The driving seat 401 is a two-axis moving component that can move up and down and left and right, and is used to drive the rotating drum 405 and the supporting plate elastic sheet 409 to move along a U-shaped track.

[0030] One end of the lower pressure sensor 408 away from the inner wall of the installation groove is flush with the cylindrical surface of the rotating drum 405 , and one end of the upper pressure sensor 410 away from the inner wall of the installation groove is located outside the cylindrical surface of the rotating drum 405 .

[0031] Specifically, the length of the upper pressure sensor 410 located outside the cylindrical surface of the rotating drum 405 is equal to the thickness of the supporting plate elastic sheet 409 .

[0032] like Figure 5 As shown, during operation, a pole piece is placed on the stacking platform 3, and the drive seat 401 is started to move toward the stacking platform 3, so that one end of the support plate elastic sheet 409 is located on the inner side of the pole piece, and one end of the rotating cylinder 405, the upper pressure sensor 410 and the lower pressure sensor 408 are located on the outer side of the pole piece, and then the drive seat 401 is controlled to move downward so that the support plate elastic sheet 409 clamps the pole piece.

[0033] Then the electric push rod 402 is started to drive the rotating drum 405 to rotate, and when the rotating drum 405 rotates, the supporting plate elastic sheet 409 is rolled up.

[0034] When the pole piece is not offset, the edge of the support plate elastic sheet 409 is flush with the edge of the pole piece. At this time, after the support plate elastic sheet 409 is rolled up, the lower pressure sensor 408 is against the edge of the support plate elastic sheet 409, indicating that the pole piece is not offset.

[0035] When the pole piece shifts to the right, the edge of the support plate elastic sheet 409 is located on the right side of the edge of the pole piece. At this time, after the support plate elastic sheet 409 is rolled up, the supporting force at the edge of the support plate elastic sheet 409 decreases, causing the pressure of the lower pressure sensor 408 to decrease, indicating that the pole piece is shifted to the right.

[0036] The second implementation method:

[0037] Figure 1-Figure 11 An intelligent assembly device for battery processing is shown, the inner wall of the chassis 1 is rotatably connected to a material tray 5, the chassis 1 is located at the lower side of the material tray 5 and is rotatably connected to two guide rollers 6, the chassis 1 is located between the material tray 5 and the guide rollers 6 and is fixedly connected to a rotating motor 7, the output end of the rotating motor 7 is fixedly connected to a swing arm 701, the end of the swing arm 701 away from the rotating motor 7 is rotatably connected to a tensioning roller 702, the outer wall of the material tray 5 is wrapped with a diaphragm 8, the diaphragm 8 passes through the two guide rollers 6 and is transmission-connected thereto, and the end of the tensioning roller 702 close to the diaphragm 8 is in contact with the diaphragm 8 and is transmission-connected thereto.

[0038] like Figure 5 As shown, during operation, a pole piece is placed on the stacking platform 3, and the drive seat 401 is started to move toward the stacking platform 3, so that one end of the support plate elastic sheet 409 is located on the inner side of the pole piece, and one end of the rotating cylinder 405, the upper pressure sensor 410 and the lower pressure sensor 408 are located on the outer side of the pole piece, and then the drive seat 401 is controlled to move downward so that the support plate elastic sheet 409 clamps the pole piece.

[0039] The rotating motor 7 is started to drive the tensioning roller 702 to rotate clockwise to tighten the diaphragm 8. After the diaphragm 8 is tightened, one end of the pole piece is bent, and the pole piece squeezes the support plate elastic sheet 409 to bend.

[0040] When the position of the pole piece has not shifted, after the pole piece and the support plate elastic sheet 409 are bent, one end of the pole piece extends beyond one end of the support plate elastic sheet 409, and the pole piece can drive one end of the support plate elastic sheet 409 to completely fit the lower pressure sensor 408, and the end of the support plate elastic sheet 409 can completely squeeze the lower pressure sensor 408. The pressure on the lower pressure sensor 408 indicates that the position of the pole piece is in a normal position.

[0041] When the position of the pole piece shifts to the right, after the pole piece and the support plate elastic sheet 409 bend, one end of the support plate elastic sheet 409 extends beyond one end of the pole piece, and the pole piece cannot drive one end of the support plate elastic sheet 409 to completely fit the lower pressure sensor 408. At this time, the squeezing force on the lower pressure sensor 408 becomes smaller, and it can detect that the position of the pole piece has shifted to the right.

[0042] After the position detection of the pole piece is completed, the rotating motor 7 is started to drive the tensioning roller 702 to rotate counterclockwise to loosen the diaphragm 8. At this time, the support plate elastic sheet 409 is reset under the action of the elastic force.

[0043] The third implementation method:

[0044] Figure 1-Figure 8 A smart assembly device for battery processing is shown, which is different from the first embodiment in that Figure 3 As shown, during operation, a pole piece is placed on the stacking platform 3, and the drive seat 401 is started to move toward the stacking platform 3, so that one end of the support plate elastic sheet 409 is located on the inner side of the pole piece, and one end of the rotating cylinder 405, the upper pressure sensor 410 and the lower pressure sensor 408 are located on the inner side of the pole piece, and then the drive seat 401 is controlled to move downward so that the support plate elastic sheet 409 clamps the pole piece.

[0045] Then the electric push rod 402 is started to drive the rotating drum 405 to rotate, and when the rotating drum 405 rotates, the supporting plate elastic sheet 409 is rolled up.

[0046] When the pole piece is not offset, the edge of the support plate elastic sheet 409 is flush with the edge of the pole piece. At this time, after the support plate elastic sheet 409 is rolled up, the lower pressure sensor 408 is against the edge of the support plate elastic sheet 409, indicating that the pole piece is not offset.

[0047] When the pole piece shifts to the right, the edge of the support plate elastic sheet 409 is located on the right side of the edge of the pole piece. At this time, after the support plate elastic sheet 409 is rolled up, the supporting force at the edge of the support plate elastic sheet 409 decreases, causing the pressure of the lower pressure sensor 408 to decrease, indicating that the pole piece is shifted to the right.

[0048] When the pole piece deviates to the left and the support plate elastic sheet 409 is rolled up, the upper pressure sensor 410 exceeds the edge of the support plate elastic sheet 409 and contacts the pole piece, indicating that the pole piece deviates to the left.

[0049] After detecting whether the pole piece is offset to the left, the driving seat 401 moves away from the stacking platform 3, so that one end of the rotating drum 405 moves to the outside of the pole piece, and the support plate elastic sheet 409 continues to clamp the pole piece to prevent the rotating drum 405 from affecting the coverage of the diaphragm 8.

[0050] The fourth implementation method:

[0051] Figure 1-Figure 11 A smart assembly device for battery processing is shown, which is different from the second embodiment in that Figure 3 As shown, during operation, a pole piece is placed on the stacking platform 3, and the drive seat 401 is started to move toward the stacking platform 3, so that one end of the support plate elastic sheet 409 is located on the inner side of the pole piece, and one end of the rotating cylinder 405, the upper pressure sensor 410 and the lower pressure sensor 408 are located on the inner side of the pole piece, and then the drive seat 401 is controlled to move downward so that the support plate elastic sheet 409 clamps the pole piece.

[0052] The rotating motor 7 is started to drive the tensioning roller 702 to rotate clockwise to tighten the diaphragm 8. After the diaphragm 8 is tightened, one end of the pole piece is bent, and the pole piece squeezes the support plate elastic sheet 409 to bend.

[0053] When the position of the pole piece has not shifted, after the pole piece and the support plate elastic sheet 409 are bent, one end of the pole piece extends beyond one end of the support plate elastic sheet 409, and the pole piece can drive one end of the support plate elastic sheet 409 to completely fit the lower pressure sensor 408, and the end of the support plate elastic sheet 409 can completely squeeze the lower pressure sensor 408. The pressure on the lower pressure sensor 408 indicates that the position of the pole piece is in a normal position.

[0054] When the position of the pole piece shifts to the right, after the pole piece and the support plate elastic sheet 409 bend, one end of the support plate elastic sheet 409 extends beyond one end of the pole piece, and the pole piece cannot drive one end of the support plate elastic sheet 409 to completely fit the lower pressure sensor 408. At this time, the squeezing force on the lower pressure sensor 408 becomes smaller, and it can detect that the position of the pole piece has shifted to the right.

[0055] When the pole piece is shifted to the left, after the pole piece and the support plate elastic sheet 409 are bent, one end of the pole piece will fit against and squeeze the upper pressure sensor 410. At this time, the pressure of the upper pressure sensor 410 increases, indicating that the pole piece is shifted to the left.

[0056] After the position detection of the pole piece is completed, the rotating motor 7 is started to drive the tensioning roller 702 to rotate counterclockwise to loosen the diaphragm 8. At this time, the support plate elastic sheet 409 is reset under the action of the elastic force.

[0057] After detecting whether the pole piece is offset to the left, the driving seat 401 drives the rotating drum 405 to move away from the stacking platform 3, so that one end of the rotating drum 405 moves to the outside of the pole piece, and the support plate elastic sheet 409 continues to clamp the pole piece to prevent the rotating drum 405 from affecting the coverage of the diaphragm 8.

[0058] In the first embodiment and the second embodiment, since there are four chucks 4 symmetrically arranged, the left and right offset of the pole piece is relative to the 4 symmetrically arranged on both sides. Therefore, only whether the pole piece is offset to the right is detected. When the pole piece has the same right offset for more than 2 layers in succession, it is possible to detect whether the pole piece is offset to the left. Although the offset state of the pole piece cannot be discovered immediately, the detection efficiency is fast.

[0059] In the third and fourth embodiments, by detecting once whether the pole piece is offset in the left and right directions, although the detection efficiency is reduced, the detection accuracy is improved, and the offset state of the pole piece can be discovered immediately.

[0060] In the first and third embodiments, when the drum rotation detection method is used, it is suitable for higher operating speed requirements. Since the working method of the drum is relatively direct and mechanized, higher production efficiency can be achieved. It is suitable for occasions where speed is required on the production line. The drum rotation method is more suitable for rough and fast detection, and basic detection accuracy can be guaranteed even in high-speed production lines.

[0061] In the second and fourth embodiments, the method of detecting the bending of the pole piece driven by the diaphragm 8 is suitable for detecting tiny pole piece position deviations. The method of tightening the diaphragm 8 and driving the pole piece to bend can enable the pole piece to better fit the rotating drum, which is suitable for detecting tiny pole piece position deviations and will not cause a large physical impact on the pole piece. Therefore, it is more suitable for applications where the pole piece material is softer, thinner or more sensitive.

[0062] In summary, by using the lower pressure sensor 408 and the upper pressure sensor 410 to detect the displacement of the pole piece, the alignment status of the pole piece can be monitored in real time to ensure that the edges of the pole piece remain flush during the battery stacking process, avoiding misalignment or uneven stacking, thereby improving the performance and stability of the battery and improving the intelligent effect of the stacking machine when it is working. Moreover, through the two detection methods, it can be adapted to different stacking detection requirements, thereby improving the practicality of the device.

[0063] In view of current practical needs, the above-mentioned implementation mode adopted in this application is not limited to the scope of protection. Various changes made within the knowledge scope of technical personnel in this field without departing from the concept of this application still fall within the scope of protection of the present invention.

Claims

1. An intelligent assembly device for battery processing, comprising a chassis (1), wherein a movable platform (2) is slidably connected inside the chassis (1), a stacking platform (3) and four chucks (4) are fixedly connected to the top of the movable platform (2), and the four chucks (4) are respectively located at four corners of the stacking platform (3), characterized in that: The chuck (4) comprises a driving seat (401), the side wall of the driving seat (401) is fixedly connected to an electric push rod (402), the output end of the electric push rod (402) is fixedly connected to a connecting block (404), the bottom end of the driving seat (401) is fixedly connected to a bottom plate (403), the side wall of the connecting block (404) is rotatably connected to a rotating cylinder (405), the outer wall of the rotating cylinder (405) is fixedly connected to a gear (406), the top end of the bottom plate (403) is fixedly connected to a rack (407), the gear (406) and the rack (407) are meshed, the bottom end of the rotating cylinder (405) is fixedly connected to a support plate elastic sheet (409), the outer wall of the rotating cylinder (405) is provided with two installation grooves, the inner walls of the two installation grooves are respectively fixedly connected to a lower pressure sensor (408) and an upper pressure sensor (410), and the upper pressure sensor (410) is located on the upper side of the lower pressure sensor (408); When working, the pole piece is placed on the stacking table, and the driving seat is started to move toward the stacking table, so that one end of the support plate elastic sheet is located on the inner side of the pole piece, and one end of the rotating drum, the upper pressure sensor and the lower pressure sensor are located on the inner side of the pole piece, and then the driving seat is controlled to move downward so that the support plate elastic sheet clamps the pole piece, and then the electric push rod is started to drive the rotating drum to rotate, and the support plate elastic sheet is rolled up when the rotating drum rotates; When the pole piece does not deviate, the edge of the support plate elastic sheet is flush with the edge of the pole piece. At this time, after the support plate elastic sheet is rolled up, the lower pressure sensor and the edge of the support plate elastic sheet are against each other, indicating that the pole piece does not deviate; When the pole piece deviates to the right, the edge of the support plate elastic sheet is located on the right side of the edge of the pole piece. At this time, after the support plate elastic sheet is rolled up, the supporting force at the edge of the support plate elastic sheet decreases, causing the pressure of the lower pressure sensor to decrease, indicating that the pole piece deviates to the right; When the pole piece deviates to the left and the support plate elastic sheet is rolled up, the upper pressure sensor exceeds the edge of the support plate elastic sheet and contacts the pole piece, indicating that the pole piece deviates to the left.

2. The intelligent assembly device for battery processing according to claim 1, characterized in that: The driving seat (401) is a two-axis moving assembly that can move up and down and left and right, and is used to drive the rotating drum (405) and the supporting plate elastic sheet (409) to move along a U-shaped track.

3. The intelligent assembly device for battery processing according to claim 1, characterized in that: One end of the lower pressure sensor (408) away from the inner wall of the installation groove is flush with the cylindrical surface of the rotating drum (405), and one end of the upper pressure sensor (410) away from the inner wall of the installation groove is located outside the cylindrical surface of the rotating drum (405).

4. The intelligent assembly device for battery processing according to claim 1, characterized in that: The inner wall of the chassis (1) is rotatably connected to a material tray (5), the chassis (1) is located at the lower side of the material tray (5) and is rotatably connected to two guide rollers (6), and the chassis (1) is located between the material tray (5) and the guide rollers (6) and is fixedly connected to a rotating motor (7).

5. The intelligent assembly device for battery processing according to claim 4, characterized in that: The output end of the rotating motor (7) is fixedly connected to a swing arm (701), and one end of the swing arm (701) away from the rotating motor (7) is rotatably connected to a tensioning roller (702).

6. The intelligent assembly device for battery processing according to claim 5, characterized in that: The outer wall of the material tray (5) is wound with a diaphragm (8), the diaphragm (8) passes through two guide rollers (6) and is transmission-connected thereto, and one end of the tensioning roller (702) close to the diaphragm (8) is in contact with the diaphragm (8) and is transmission-connected thereto.

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