A kind of electrode tab sorting device suitable for lithium ion battery

Abstract

This invention discloses an electrode sorting device suitable for lithium-ion batteries, comprising a worktable, a weighing plate fixed to the upper end of the worktable, and side plates that can move vertically on both sides of the upper end of the worktable and the weighing plate. A sliding groove is provided on the upper end of the worktable, within which a rotatable annular rotating plate is located. The annular rotating plate is connected to the worktable via bearings. Support seats are symmetrically fixed to the upper end of the annular rotating plate, and telescopic columns are fixed to the upper ends of the support seats. A support mechanism for supporting the electrode sheets is fixed to the upper end of the telescopic columns. A mounting frame is fixed to the upper end of the worktable, and a cylinder one is fixed on the mounting frame directly above the weighing plate. The piston rod of cylinder one faces downward and is fixed to a pressure plate. Two cylinders two are fixed on the mounting frame on both sides of the weighing plate, and their piston rods are fixed to push plates. This electrode sorting device for lithium-ion batteries eliminates the need for re-sorting and stacking the sorted electrode sheets, reducing the labor intensity of workers.

Description

Technical Field

[0001] This invention relates to the field of electrode production, and more specifically to an electrode sorting device suitable for lithium-ion batteries. Background Technology

[0002] Battery electrodes are a crucial component of lithium batteries, and their quality significantly impacts the battery's performance and lifespan. Lithium batteries of the same model and specification maintain consistent electrode shape, weight, and other parameters. Therefore, the matching and grouping of lithium battery electrodes is a vital step in battery production to improve product quality. In current technology, each electrode needs to be weighed individually, and then rearranged and stacked, greatly increasing the workload and reducing efficiency. Summary of the Invention

[0003] The purpose of this invention is to provide an electrode sorting device suitable for lithium-ion batteries, which eliminates the need to re-sort and stack the sorted electrodes, thus reducing the labor intensity of workers.

[0004] To achieve the above objectives, the present invention provides the following technical solution:

[0005] An electrode sorting device suitable for lithium-ion batteries includes a worktable, a weighing plate fixed to the upper end of the worktable, side plates that can move vertically on both sides of the upper end of the worktable and the weighing plate, a sliding groove on the upper end of the worktable, a rotatable annular rotating plate in the sliding groove, the annular rotating plate being connected to the worktable via bearings, support seats symmetrically fixed to the upper end of the annular rotating plate, telescopic columns fixed to the upper ends of the support seats, a support mechanism for supporting the electrode sheets fixed to the upper end of the telescopic columns, a mounting frame fixed to the upper end of the worktable, a cylinder one fixed on the mounting frame and directly above the weighing plate, the piston rod of the cylinder one pointing downwards and fixed to a pressure plate, and a cylinder two fixed on the mounting frame and on both sides of the weighing plate, the piston rod of the cylinder two being fixed to a push plate.

[0006] Preferably, the workbench is provided with a mounting cavity 1, and a cylinder 3 is fixed in the mounting cavity 1. The piston rod of the cylinder 3 is fixed to the support plate with its piston facing upward, and the lower end of the side plate extends into the mounting cavity 1 and is fixed to the support plate.

[0007] Preferably, a driven gear is fixedly mounted on the outer sleeve of the annular rotating plate, a motor is fixed inside the worktable, the output shaft of the motor is fixed to the driving gear, and the driving gear and the driven gear are meshed together.

[0008] Preferably, the telescopic column includes a hollow rod and a top rod. The hollow rod is sleeved outside the top rod, and the top rod extends out of the hollow rod. A cylinder four is fixed inside the hollow rod, and the piston rod of the cylinder four faces upward and is fixed to the top rod.

[0009] Preferably, the support mechanism includes a fixed base fixed to the upper end of the telescopic column. The fixed base has an installation groove at one end near the weighing plate. A second motor is fixed in the installation groove. The output shaft of the second motor is fixed to a second drive gear. A second driven gear is installed in the installation groove. The second drive gear and the second driven gear are meshed together. The second drive gear and the second driven gear are respectively fixed to a rotating rod. The rotating rod extends out of the installation groove. L-shaped limiting plates are respectively fixed on the side wall of the fixed base and on both sides of the installation groove.

[0010] Preferably, a lower fixing plate is provided at the upper end of the workbench and between the side plate and the weighing plate. Fastening plates are fixed at both ends of the lower fixing plate. A side fixing plate is provided above the fastening plate. An upper fixing plate is fixed at the side end of the side fixing plate. A bolt is fixed at the lower end of the side fixing plate. A through hole 1 for the bolt to pass through is provided on the fastening plate. A fastening hole is provided at the lower end of the fastening plate. The fastening hole communicates with the through hole 1. A second mounting cavity 2 is provided inside the workbench and below the fastening plate. A cylinder 5 is fixed in the second mounting cavity. The piston rod of the cylinder 5 faces upward and is fixed to the base plate. A motor 3 is fixed at the upper end of the base plate. The output shaft of the motor 3 is fixed to the rotating plate. Two or more support rods are fixed at the upper end of the rotating plate. The upper end of the support rods is fixed to the placement block. A placement groove for placing a nut is provided at the upper end of the placement block. A nut is placed in the placement groove. A second through hole 2 for the bolt to pass through is provided at the lower end of the placement block. The second through hole 2 communicates with the placement groove.

[0011] Preferably, it also includes a drive mechanism for controlling the movement of the side fixing plate.

[0012] Preferably, the driving mechanism includes a guide rod and lead screw one and lead screw two, with the threads of lead screw one and lead screw two arranged in opposite directions. Both ends of the guide rod are fixed to the mounting bracket, and the guide rod passes through two sliders. One end of lead screw one is fixed to the output shaft of motor four, and motor four is fixed on the mounting bracket. The other end of lead screw one is fixed to one end of lead screw two, and the other end of lead screw two is connected to the mounting bracket via a bearing. Lead screw one and lead screw two pass through the sliders and are threadedly connected to the sliders. An electric push rod is fixed to the lower end of each slider, and a connecting plate is fixed to the lower end of each electric push rod. The connecting plate is fixed to a hook plate, and a hook groove is provided on the side fixing plate.

[0013] Preferably, the upper surface of the hook groove is inclined, and the upper surface of the hook plate is inclined.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1) In this invention, the electrodes are directly stacked during the weighing process, and the weight of the newly added electrodes is calculated based on the weight difference before and after weighing to determine whether the weight meets the standard, thereby achieving sorting without requiring staff to re-stack them after weighing.

[0016] 2) The present invention is provided with a lower fixing plate, a side fixing plate and an upper fixing plate, which can fix the stacked electrode sheets as a whole and prevent the electrode sheets from falling off during the movement. Attached Figure Description

[0017] Figure 1 This is a front view of an electrode sorting device suitable for lithium-ion batteries according to an embodiment of the present invention;

[0018] Figure 2 yes Figure 1 A cross-sectional view along the AA direction;

[0019] Figure 3 yes Figure 2 Enlarged view of point B in the middle;

[0020] Figure 4 yes Figure 2 Enlarged view of point C in the middle;

[0021] Figure 5 This is a top view of a partial structure of an electrode sorting device suitable for lithium-ion batteries in an embodiment of the present invention;

[0022] Figure 6 yes Figure 5 A cross-sectional view along the DD direction;

[0023] Figure 7 yes Figure 6 Enlarged view at point E in the middle;

[0024] Figure 8 This is a top view of the rotating rod in an embodiment of the present invention;

[0025] In the diagram, 1. Workbench, 2. Weighing plate, 3. Side plate, 4. Mounting cavity one, 5. Cylinder three, 6. Support plate, 7. Annular rotating plate, 8. Driven gear one, 9. Motor one, 10. Driving gear one, 11. Support base, 12. Hollow rod, 13. Push rod, 14. Cylinder four, 15. Fixed base, 16. Mounting slot, 17. Motor two, 18. Driving gear two, 19. Driven gear two, 20. Rotating rod, 21. L-shaped limit plate, 22. Cylinder one, 23. Pressure plate, 24. Mounting bracket, 25. Cylinder two, 26. 27. Push plate, 28. Lower fixed plate, 29. Fastening plate, 30. Side fixed plate, 31. Upper fixed plate, 32. Bolt, 33. Through hole one, 34. Fastening hole, 35. Mounting cavity two, 36. Cylinder five, 37. Base plate, 38. Motor three, 39. Rotating plate, 40. Support rod, 41. Placement block, 42. Nut, 43. Through hole two, 44. Guide rod, 45. Lead screw one, 46. Lead screw two, 47. Slider, 48. Hook groove, 49. Electric push rod, 50. Connecting plate, 51. Hook plate, 52. Motor four, 53. Electrode. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] Please see Figure 1-8 As shown, an electrode sorting device suitable for lithium-ion batteries includes a worktable 1, with a weighing plate 2 fixed to the upper end of the worktable 1. The weighing plate 2 can be a conventional weighing mechanism or a weighing plate 2 equipped with a gravity sensor. Side plates 3, capable of vertical movement, are respectively provided on the upper end of the worktable 1 and on both sides of the weighing plate 2. An installation cavity 4 is provided inside the worktable 1, and a cylinder 5 is fixed inside the installation cavity 4. The piston rod of the cylinder 5 is fixed upwards to a support plate 6. The lower ends of the side plates 3 extend into the installation cavity 4 and are fixed to the support plate 6. A sliding hole for the support plate 6 to pass through is provided at the upper end of the worktable 1.

[0028] The upper end of the worktable 1 is provided with an annular groove, within which a rotatable annular rotating plate 7 is installed. The annular rotating plate 7 is connected to the worktable 1 via bearings. A driven gear 8 is fixedly mounted on the outer sleeve of the annular rotating plate 7. A motor 9 is fixed inside the worktable 1. The output shaft of the motor 9 is fixed to a driving gear 10, which meshes with the driven gear 8. Support seats 11 are symmetrically fixed to the upper end of the annular rotating plate 7, and a telescopic column is fixed to the upper end of the support seats 11. The telescopic column includes a hollow rod 12 and a top rod 13. The hollow rod 12 is sleeved over the top rod 13, with the top rod 13 extending beyond the hollow rod 12. A cylinder 14 is fixed inside the hollow rod 12, with its piston rod facing upwards and fixed to the top rod 13. The length of the top rod 13 extending beyond the hollow rod 12 can be controlled by the cylinder 14, thereby changing the height of the telescopic column.

[0029] A support mechanism for supporting the pole piece 52 is fixed at the upper end of the telescopic column. The support mechanism includes a fixed seat 15 fixed to the upper end of the top rod 13. A mounting groove 16 is provided at one end of the fixed seat 15 near the weighing plate 2. A second motor 17 is fixed inside the mounting groove 16. The output shaft of the second motor 17 is fixed to a second drive gear 18. A second driven gear 19 is installed inside the mounting groove 16 and is fixed to a rotating shaft. Both ends of the rotating shaft are connected to the inner wall of the mounting groove 16 via bearings. The second drive gear 18 and the second driven gear 19 are meshed together. The second drive gear 18 and the second driven gear 19 are respectively fixed to a rotating rod 20, which extends out of the mounting groove 16. L-shaped limiting plates 21 are fixed on the side wall of the fixed seat 15, located on both sides of the mounting groove 16, and are arranged opposite each other.

[0030] A mounting bracket 24 is fixed to the upper end of the workbench 1. A cylinder 22 is fixed on the mounting bracket 24 and directly above the weighing plate 2. The piston rod of the cylinder 22 faces downward and is fixed to the pressure plate 23. A cylinder 25 is fixed on the mounting bracket 24 and located on both sides and one side of the weighing plate 2. The piston rod of the cylinder 25 is fixed to the push plate 26.

[0031] A lower fixing plate 27 is provided at the upper end of the workbench 1, between the side plate 3 and the weighing plate 2. Fastening plates 28 are fixed to both ends of the lower fixing plate 27, and a side fixing plate 29 is provided above the fastening plate 28. An upper fixing plate 30 is fixed to the side end of the side fixing plate 29, and a bolt 31 is fixed to the lower end of the side fixing plate 29. The fastening plate 28 has a through hole 32 for the bolt 31 to pass through, and a fastening hole 33 is provided at the lower end of the fastening plate 28, communicating with the through hole 32. A second mounting cavity 34 is provided inside the workbench 1, below the fastening plate 28. A fifth cylinder 35 is fixed inside the second mounting cavity 34, with the piston rod of the fifth cylinder 35 facing upwards and fixed to the base plate 36. A third motor 37 is fixed to the upper end of the base plate 36, and the output shaft of the third motor 37 is fixed to the rotating plate 38. Two or more support rods 39 are fixed to the upper end of the rotating plate 38. The upper ends of the support rods 39 are fixed to the placement block 40. The upper end of the placement block 40 is provided with a placement groove for placing nuts 41, and the nuts 41 are placed in the placement groove. The lower end of the placement block 40 is provided with a second through hole 42 through which bolts 31 pass, and the second through hole 42 communicates with the placement groove.

[0032] It also includes a drive mechanism for controlling the movement of the side fixing plate 29. The drive mechanism includes a guide rod 43 and lead screws 44 and 45, with the threads of lead screws 44 and 45 arranged in opposite directions. Both ends of the guide rod 43 are fixed to the mounting bracket 24, and the guide rod 43 passes through two sliders 46. One end of lead screw 44 is fixed to the output shaft of motor 51, which is fixed to the mounting bracket 24. The other end of lead screw 44 is fixed to one end of lead screw 45, and the other end of lead screw 45 is connected to the mounting bracket 24 via a bearing. Lead screws 44 and 45 pass through sliders 46 and are threadedly connected to sliders 46. An electric push rod 48 is fixed to the lower end of each slider 46, and a connecting plate 49 is fixed to the lower end of the electric push rod 48. The connecting plate 49 is fixed to a hook plate 50, and the side fixing plate 29 is provided with a hook groove 47. The upper surface of the hook groove 47 is inclined, and the upper surface of the hook plate 50 is also inclined.

[0033] Working principle: such as Figure 5As shown, the initial position of the support base 11 is located on the side of the side plate 3 away from the weighing plate 2. The electrode 52 to be weighed is placed horizontally between the two support mechanisms, so that the rotating rod 20 supports the electrode 52 and the L-shaped limiting plate 21 limits the four right angles of the electrode 52. The cylinder 3 5 drives the side plate 3 to move downward, so that the side plate 3 is slightly lower than the upper end surface of the uppermost electrode 52 on the weighing plate 2. The telescopic column shortens, so that the electrode 52 to be weighed is placed on the upper end surface of the electrode 52 that has already been weighed on the weighing plate 2. The telescopic column continues to shorten, and the rotating rod 20 moves away from the electrode 52 to be weighed. The weighing plate 2 is started, and all the electrodes 52 at its upper end are weighed using the weighing plate 2. If the difference between the current weighing value and the previous weighing value meets the quality standard of one electrode 52, it means that the newly added electrode 52 meets the standard. The telescopic column extends, and the rotating rod 20 lifts the electrode 52 to be weighed. Simultaneously, the side plate 3 rises to a position flush with the uppermost surface of the electrode 52 on the weighing plate 2. The side plate 3 prevents the weighed and stacked electrode 52 from collapsing. Motor 9 is started, driving the annular rotating plate 7 to rotate. The rotating rod 20 and the L-shaped limiting plate 21 rotate the electrode 52, causing it to change from a horizontal to a vertical direction, and making it parallel to the electrode 52 already stacked below it. Then, the telescopic column shortens, causing the electrode 52 to overlap with the electrode 52 below it. Motor 17 is started, driving the rotating rod 20 to rotate, causing the rotating rod 20 to be pulled away from below the electrode 52. The support mechanism then resets, repositioning itself on the side of the side plate 3 away from the weighing plate 2, ready to receive the next electrode 52.

[0034] If the difference between the current weighing value and the previous weighing value does not meet the quality standard for one electrode 52, it indicates that the newly added electrode 52 does not meet the standard. Start cylinder 25, and push plate 26 pushes the electrode 52 off the side plate 3.

[0035] After a batch of electrode sheets 52 is weighed, cylinder 22 is activated to press the stacked electrode sheets 52 together using pressure plate 23. Motor 41 is activated to move the side fixing plate 29 directly above the fastening plate 28. Electric push rod 48 is activated to allow bolts 31 to pass through fastening holes 33 and through holes 32 in sequence. Cylinder 55 is activated to move nut 41 upwards with the placement block 40 and insert it into the fastening hole 33. Nut 41 and bolt 31 are tightened, fixing the side fixing plate 29 to the fastening block. Then, the placement block 40 is reset, and a new nut 41 is added. Electric push rod 48 is used to move hook plate 50 slightly downwards within hook groove 47. Then, motor 51 is used to completely remove hook plate 50 from hook groove 47, using hook plate 50 to hook off the next side fixing plate 29. Push plate 26 on one side of weighing plate 2 is used to push out the stacked, qualified electrode sheets 52 between the two side plates 3.

[0036] The above description is merely an example and illustration of the structure of the present invention. Those skilled in the art can make various modifications or additions to the specific embodiments described, or use similar methods to replace them, as long as they do not deviate from the structure of the present invention or exceed the scope defined in the claims, all of which should fall within the protection scope of the present invention.

Claims

1. An electrode sorting device suitable for lithium-ion batteries, characterized in that: The device includes a workbench, a weighing plate fixed to its upper end, side plates that can move vertically on both sides of the weighing plate, a sliding groove on the upper end of the workbench, a rotatable annular rotating plate within the sliding groove, the annular rotating plate being connected to the workbench via bearings, support seats symmetrically fixed to the upper end of the annular rotating plate, telescopic columns fixed to the upper ends of the support seats, a support mechanism for supporting electrode plates fixed to the upper end of the telescopic columns, a mounting frame fixed to the upper end of the workbench, a cylinder one fixed to the mounting frame directly above the weighing plate, the piston rod of the cylinder one facing downwards and fixed to a pressure plate, and cylinder two fixed to the mounting frame on both sides of the weighing plate, the piston rod of the cylinder two being fixed to a push plate. The support mechanism includes a fixed base fixed to the upper end of the telescopic column. The fixed base has an installation groove at one end near the weighing plate. A second motor is fixed in the installation groove. The output shaft of the second motor is fixed to a second drive gear. A second driven gear is installed in the installation groove. The second drive gear and the second driven gear are meshed together. The second drive gear and the second driven gear are respectively fixed to a rotating rod. The rotating rod extends out of the installation groove. L-shaped limiting plates are fixed on the side wall of the fixed base and on both sides of the installation groove.

2. The electrode sorting device for lithium-ion batteries according to claim 1, characterized in that: The workbench is provided with an installation cavity 1, and a cylinder 3 is fixed in the installation cavity 1. The piston rod of the cylinder 3 is fixed to the support plate with its piston facing upward, and the lower end of the side plate extends into the installation cavity 1 and is fixed to the support plate.

3. The electrode sorting device for lithium-ion batteries according to claim 1, characterized in that: A driven gear is fixedly mounted on the outer sleeve of the annular rotating plate, and a motor is fixed inside the worktable. The output shaft of the motor is fixed to the driving gear, and the driving gear and the driven gear are meshed together.

4. The electrode sorting device for lithium-ion batteries according to claim 1, characterized in that: The telescopic column includes a hollow rod and a top rod. The hollow rod is sleeved outside the top rod, and the top rod extends out of the hollow rod. A cylinder four is fixed inside the hollow rod, and the piston rod of the cylinder four faces upward and is fixed to the top rod.

5. The electrode sorting device for lithium-ion batteries according to claim 1, characterized in that: A lower fixing plate is provided on the upper part of the workbench, located between the side plate and the weighing plate. Fastening plates are fixed at both ends of the lower fixing plate. A side fixing plate is provided above the fastening plate. An upper fixing plate is fixed to the side end of the side fixing plate. A bolt is fixed to the lower end of the side fixing plate. A through hole 1 for the bolt to pass through is provided on the fastening plate. A fastening hole is provided at the lower end of the fastening plate. The fastening hole communicates with the through hole 1. A second mounting cavity 2 is provided inside the workbench, located below the fastening plate. A cylinder 5 is fixed in the second mounting cavity. The piston rod of the cylinder 5 faces upward and is fixed to the base plate. A motor 3 is fixed on the upper part of the base plate. The output shaft of the motor 3 is fixed to the rotating plate. Two or more support rods are fixed on the upper part of the rotating plate. The upper end of the support rods is fixed to the placement block. A placement groove for placing a nut is provided on the upper end of the placement block. A nut is placed in the placement groove. A through hole 2 for the bolt to pass through is provided at the lower end of the placement block. The through hole 2 communicates with the placement groove.

6. The electrode sorting device for lithium-ion batteries according to claim 5, characterized in that: It also includes a drive mechanism for controlling the movement of the side fixing plate.

7. The electrode sorting device for lithium-ion batteries according to claim 6, characterized in that: The driving mechanism includes a guide rod and two lead screws, one and two. The threads of lead screws one and two are arranged in opposite directions. Both ends of the guide rod are fixed to the mounting bracket. The guide rod passes through two sliders. One end of lead screw one is fixed to the output shaft of motor four. Motor four is fixed on the mounting bracket. The other end of lead screw one is fixed to one end of lead screw two. The other end of lead screw two is connected to the mounting bracket through a bearing. Lead screw one and lead screw two pass through the sliders and are threadedly connected to the sliders. An electric push rod is fixed to the lower end of each slider. The lower end of the electric push rod is fixed with a connecting plate. The connecting plate is fixed with a hook plate. The side fixing plate is provided with a hook groove.

8. The electrode sorting device for lithium-ion batteries according to claim 7, characterized in that: The upper surface of the hook groove is inclined, and the upper surface of the hook plate is inclined.

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