Battery cell shell insertion equipment and shell insertion method

Abstract

The present invention provides a battery cell shell insertion device and method. The battery cell shell insertion device includes a lifting device, a centering device, a clamping device, a guide device, a carrier device, and a control unit. The centering device is provided on the lifting device; the clamping device is provided on the centering device and is used to clamp the shell workpiece; there are two guide devices, which are symmetrically provided on the centering device, and a guide hole is formed between the two guide devices; the guide device includes a guide cylinder, a guide film plate, and a protective film. The fixed end of the guide cylinder is connected to the centering device, and the movable end of the guide cylinder is connected to the guide film plate. The protective film is provided on the guide film plate and is arranged around the guide hole. In the vertical direction, the projection of the protective film at least partially extends into the projection of the guide hole; and the carrier device is provided below the clamping device. The battery cell shell insertion device and method of the present invention effectively improve the accuracy of shell insertion and the yield rate of shell insertion.

Description

Technical Field

[0001] The present invention relates to the technical field of battery processing, and in particular to a battery cell shelling device and a shelling method. Background Art

[0002] Lithium batteries are widely used in new energy vehicles and energy storage industries. With people's attention and investment in new energy, new energy vehicles have developed rapidly, thereby driving the rapid improvement of lithium battery technology and increasing the market demand for square shell batteries among new batteries.

[0003] The cell-to-shell process is a crucial step in the prismatic battery molding process. Traditional cell-to-shell equipment on the market mostly uses horizontal insertion. In this method, the cell and the battery shell lie flat together. A push rod pushes the cell into the battery shell, firmly fitting it into the shell. While this traditional insertion method is capable of inserting cells, it has certain limitations. Consequently, the vertical insertion method has emerged.

[0004] For example, Chinese patent application CN116851897A discloses a top cover pre-spot welding device and battery cell shell insertion equipment. By installing the top cover pre-spot welding device, the formed battery cell is placed into the battery shell. The top cover is positioned by the top cover pre-spot welding device, and then a full weld is performed to completely connect the top cover to the shell, completing the battery cell shell insertion. Although this device can complete vertical shell insertion, it lacks corresponding guiding and positioning mechanisms, making it prone to errors during shell insertion, easily scratching and crushing the battery cell, and resulting in a low yield rate.

[0005] Therefore, how to improve the accuracy and yield rate of the shelling process of square shell battery cells is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0006] The first object of the present invention is to provide a battery cell shell insertion device with higher shell insertion accuracy and higher yield.

[0007] The second object of the present invention is to provide a method for inserting a battery cell into a shell, which uses the above-mentioned battery cell inserting device to further improve the accuracy of inserting the shell and the yield rate of the shell.

[0008] In order to achieve the above first purpose, the present invention provides the following technical solutions:

[0009] Provided is a battery cell shelling device, comprising:

[0010] lifting device;

[0011] a centering device, the centering device being provided on the lifting device;

[0012] A clamping device, the clamping device is provided on the centering device, and the clamping device is used to clamp the shell workpiece;

[0013] Two guide devices are provided, each symmetrically disposed on the centering device, with a guide hole formed between the two guide devices. The guide device comprises a guide cylinder, a guide film plate, and a protective film. The fixed end of the guide cylinder is connected to the centering device, and the movable end of the guide cylinder is connected to the guide film plate. The protective film is provided on the guide film plate and surrounds the guide hole. In the vertical direction, the projection of the protective film at least partially extends into the projection of the guide hole.

[0014] A carrier device, the carrier device is arranged below the clamping device, the carrier device includes two battery cell clamping assemblies, and the two battery cell clamping assemblies are used to clamp the battery cell workpiece;

[0015] A control unit is electrically connected to the lifting device, the centering device, the clamping device, the guiding device and the carrier device respectively.

[0016] Through the above scheme, when entering the shell, the carrier device plays the role of clamping the battery cell workpiece, the lifting device plays the role of driving the other devices except the carrier device to move up and down, providing the total vertical displacement power for entering the shell, the clamping device is used to clamp the shell workpiece, the centering device can maintain the centering degree of the shell workpiece when entering the shell, and the guide device plays a guiding role, so that the shell workpiece can be vertically mounted on the battery cell workpiece, thereby improving the accuracy of entering the shell. Finally, a commonly used control unit is used to control each device, with a higher degree of automation, higher work efficiency, and more precise control of the shell entry process.

[0017] More specifically, when entering the shell, the first stage of shell entry is performed first. At this time, the protective film is located below the shell workpiece. The protective film first contacts the upper surface of the battery cell workpiece and the outer edge of the upper surface. The shell opening edge of the shell workpiece only contacts the protective film, which avoids the shell opening edge of the shell workpiece directly contacting the battery cell workpiece and the shell opening of the shell workpiece from scratching the battery cell workpiece. When continuing to enter the shell, the protective film extends into the gap between the battery cell workpiece and the shell workpiece, which can protect the battery cell workpiece. When most of the shell workpiece is covered on the outer wall of the battery cell workpiece, the second stage of shell entry is performed, and the downward movement speed of the clamping device is greater than the downward movement speed of the lifting device, so that the protective film leaves the shell workpiece, and the clamping device moves downward so that the shell workpiece is completely covered on the battery cell workpiece, thereby completing the shell entry process. It can be understood that the use of a guiding device with a protective film can effectively prevent the shell workpiece from causing damage to the surface of the battery cell workpiece during the shell entry process, avoid scratching the battery cell workpiece, and effectively improve the yield rate of the shell entry process.

[0018] Optionally, the centering device includes a centering fixed seat, a follower sliding assembly, a follower connecting seat, a first sliding fixing plate, a second sliding fixing plate, a follower finger cylinder and a follower fixing block, the centering fixed seat is connected to the lifting device, the first sliding fixing plate and the second sliding fixing plate are arranged on the centering fixed seat at intervals along the first direction, the bottom of the first sliding fixing plate and the bottom of the second sliding fixing plate are both provided with the follower sliding assembly, the follower connecting seat is connected to the follower sliding assembly, the two guide devices are arranged on the bottom of the follower connecting seat at intervals along the first direction, the follower fixing block is provided on the first sliding fixing plate, the fixed end of the follower finger cylinder is connected to the follower connecting seat, and the movable end of the follower finger cylinder is located on both sides of the follower fixing block and can clamp the follower fixing block.

[0019] Optionally, the guide device further includes a guide sliding assembly, the guide sliding assembly is arranged at the bottom of the follower connecting seat, and the guide film plate is connected to the guide sliding assembly.

[0020] Optionally, the clamping device includes a clamping displacement assembly, a clamping finger cylinder, a clamping connecting seat and a clamping block, the clamping displacement assembly is connected to the centering fixed seat, the fixed end of the clamping finger cylinder is connected to the clamping displacement assembly, the movable end of the clamping finger cylinder is connected to the clamping connecting seat, and the clamping block is connected to the clamping connecting seat.

[0021] Optionally, the clamping device also includes a clamping detection unit, which is arranged on the clamping connecting seat, and the clamping block is provided with an outer shell clamping groove and a detection avoidance hole, and the outer shell clamping groove is connected to the detection avoidance hole, and the clamping detection unit is located on the side of the detection avoidance hole away from the outer shell clamping groove.

[0022] Optionally, the lifting device includes a lifting base and a lifting displacement assembly, the lifting displacement assembly is arranged on the lifting base, and the centering fixing seat is connected to the lifting displacement assembly.

[0023] Optionally, the carrier device includes a carrier base, a carrier positioning plate, a carrier cylinder, a carrier clamping link assembly and two battery cell clamping assemblies, the carrier positioning plate is connected to the carrier base, the two battery cell clamping assemblies are slidably connected to the carrier base, the two battery cell clamping assemblies are respectively arranged on both sides of the carrier positioning plate, the carrier clamping link assemblies are respectively connected to the two battery cell clamping assemblies, the fixed end of the carrier cylinder is connected to the carrier base, and the movable end of the carrier cylinder is connected to the carrier clamping link assembly to drive the carrier clamping link assembly to drive the two battery cell clamping assemblies to move closer to or away from each other.

[0024] Optionally, the carrier device also includes a plurality of carrier sliding assemblies, and the plurality of carrier sliding assemblies are all arranged on the carrier base, the battery cell clamping assembly includes a battery cell clamping seat and a battery cell clamping member, the carrier clamping link assembly includes a carrier guide plate, a carrier guide column and a guide elastic member, the battery cell clamping seat is connected to one of the carrier sliding assemblies, the battery cell clamping member is arranged on the battery cell clamping seat, the carrier guide plate is connected to one of the carrier sliding assemblies, the carrier guide column is connected to the battery cell clamping seat, the carrier guide plate is provided with a carrier guide groove, the carrier guide column is slidably connected to the carrier guide groove, one end of the guide elastic member is connected to the carrier base, and the other end of the guide elastic member is connected to the carrier guide plate.

[0025] Optionally, the battery cell shell insertion equipment also includes two in-place detection devices, which are respectively arranged on both sides of the carrier device; the in-place detection device includes an in-place detection support rod and an in-place detection unit, which is arranged on the in-place detection support rod, and the in-place detection unit is located above the carrier device.

[0026] In order to achieve the above second objective, the present invention provides the following technical solutions:

[0027] A method for inserting a battery cell into a shell is provided, which uses the above-mentioned battery cell inserting device and includes the following steps:

[0028] S1. The external conveying device transports the carrier device with the battery workpiece to the bottom of the clamping device. The external manipulator transports the shell workpiece to the clamping device. The clamping finger cylinder drives the clamping blocks to approach each other and clamp the shell workpiece.

[0029] S2, the clamping displacement assembly drives the clamping finger cylinder to move the shell workpiece downward to the guide device;

[0030] S3, the guide cylinder drives the guide film plate to move toward the shell workpiece, and the two guide film plates in the two guide devices approach each other to form a guide hole, the lower end of the shell workpiece is located in the guide hole, and the protective film is located below the shell workpiece;

[0031] S4, the lifting device drives the centering device to drive the clamping device and the guide device to move downward to the top of the battery workpiece, and the two battery clamping assemblies release the battery workpiece;

[0032] S5. The follower finger cylinder clamps the follower fixed block, the follower finger cylinder drives the follower connecting seat to move, and the follower connecting seat drives the guide device to move, so that the guide hole formed between the two guide devices is always located directly above the battery workpiece, maintaining the centering of the guide hole;

[0033] S6. The first stage of shell insertion is performed. The lifting device drives the centering device to drive the clamping device and the guide device to continue to move downward. When the shell workpiece moves downward, the protective film is clamped between the shell workpiece and the battery core workpiece;

[0034] S7. When most of the shell workpiece is covered on the outer wall of the battery core workpiece, the shell is inserted in two stages. The downward movement speed of the clamping displacement component is greater than the downward movement speed of the lifting device, so that the protective film leaves the shell workpiece, and the clamping displacement component drives the shell workpiece to be completely covered on the battery core workpiece;

[0035] S8, the two guide devices move away from each other and leave the shell workpiece, the follower finger cylinder is released and leaves the follower fixed block, and the carrier device clamps the shell workpiece on the battery core workpiece;

[0036] S9. The clamping finger cylinder drives the clamping blocks to move away from each other and leave the shell workpiece. The clamping displacement assembly drives the clamping finger cylinder to drive the clamping block to move upward to the initial position. The lifting device drives the centering device to drive the clamping device and the guide device to move upward to the initial position, completing the entire battery cell shelling process.

[0037] Compared with the prior art, the solution of the present invention has the following advantages:

[0038] 1. In the battery cell shelling equipment of the present invention, when shelling, the carrier device plays the role of clamping the battery cell workpiece, the lifting device plays the role of driving the other devices except the carrier device to move up and down, providing the total vertical displacement power for shelling, the clamping device is used to clamp the shell workpiece, the centering device can maintain the centering degree of the shell workpiece when shelling, and the guide device plays a guiding role, so that the shell workpiece can be vertically sleeved on the battery cell workpiece, improving the accuracy of shelling, and finally adopting a common control unit to control each device, with a higher degree of automation, higher work efficiency, and more accurate control of the shelling process. In addition, the use of a guide device with a protective film can effectively prevent the shell workpiece from damaging the surface of the battery cell workpiece during the shelling process, avoid scratching the battery cell workpiece, and effectively improve the yield rate of the shelling process.

[0039] 2. In the battery cell shelling method of the present invention, the above-mentioned battery cell shelling equipment is used to further improve the shelling accuracy and shelling yield.

[0040] Additional aspects and advantages of the present invention will be set forth in part in the following description, will become apparent from the following description, or may be learned by practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0042] Figure 1 This is a schematic structural diagram of a battery cell shell insertion device in one embodiment of the present invention;

[0043] Figure 2 This is a front view of a battery cell shell insertion device in one embodiment of the present invention;

[0044] Figure 3 This is a right side view of a battery cell shell insertion device in one embodiment of the present invention;

[0045] Figure 4 A schematic structural diagram of a centering device, a clamping device, and a guiding device in one embodiment of the present invention;

[0046] Figure 5 A schematic structural diagram of a centering device and a guide device in one embodiment of the present invention;

[0047] Figure 6 A bottom view of a centering device and a guide device in one embodiment of the present invention;

[0048] Figure 7 A schematic structural diagram of a clamping device in one embodiment of the present invention;

[0049] Figure 8 A schematic structural diagram of a carrier device in one embodiment of the present invention;

[0050] Figure 9 Schematic diagram of the matching structure of a carrier clamping link assembly and a cell clamping assembly of a carrier device in an embodiment of the present invention.

[0051] 1. Lifting device; 11. Lifting base; 12. Lifting displacement assembly; 2. Centering device; 21. Centering fixed seat; 22. Follow-up sliding assembly; 23. Follow-up connecting seat; 24. First sliding fixed plate; 25. Second sliding fixed plate; 26. Follow-up finger cylinder; 27. Follow-up fixed block; 271. Follow-up clamping part; 28. Follow-up clamping member; 3. Clamping device; 31. Clamping displacement assembly; 32. Clamping finger cylinder; 33. Clamping connecting seat; 34. Clamping block; 341. Housing clamping groove; 342. Detection avoidance hole; 35. Clamping fixed seat; 36. Clamping sliding assembly; 37. Clamping detection unit; 4. Guide device; 41. Guide hole; 42. Guide cylinder; 43. Guide film plate; 431. Upper film plate; 432. Lower film plate; 44. Protective film; 45. Guide connecting plate; 46. Guide sliding assembly; 47. Guide buffer; 5. Carrier device; 51. Carrier base; 52. Carrier positioning plate; 53. Carrier cylinder; 54. Carrier clamping link assembly; 541. Carrier guide plate; 542. Carrier guide column; 543. Guide elastic member; 544. Carrier guide groove; 55. Battery cell clamping assembly; 551. Battery cell clamping seat; 552. Battery cell clamping member; 56. Carrier sliding assembly; 6. In-place detection device; 61. In-place detection support rod; 62. In-place detection unit; 7. Shell workpiece; 8. Battery cell workpiece. DETAILED DESCRIPTION

[0052] The following describes embodiments of the present invention in detail, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0053] like Figures 1 to 9 As shown, the present invention provides a battery cell shelling device, which is mainly used to perform shelling operations on square shell batteries and put the shell workpiece 7 on the battery cell workpiece 8.

[0054] For the convenience of explanation, in this embodiment, each direction is as follows Figure 1 As shown, the first direction is the front-to-back direction.

[0055] like Figures 1 to 3 As shown, the battery cell shelling equipment provided by the present invention includes a lifting device 1, a centering device 2, a clamping device 3, a guiding device 4, a carrier device 5 and a control unit, and the control unit is electrically connected to the lifting device 1, the centering device 2, the clamping device 3, the guiding device 4 and the carrier device 5 respectively.

[0056] Specifically, the centering device 2 is provided on the lifting device 1 , and the centering device 2 can maintain the centering degree of the shell workpiece 7 when it is inserted into the shell. The clamping device 3 is provided on the centering device 2 , and the clamping device 3 is used to clamp the shell workpiece 7 .

[0057] Further, if Figure 6 As shown, there are two guide devices 4, and the two guide devices 4 are symmetrically arranged on the centering device 2, and a guide hole 41 is formed between the two guide devices 4; the guide device 4 includes a guide cylinder 42, a guide film plate 43 and a protective film 44, the fixed end of the guide cylinder 42 is connected to the centering device 2, the movable end of the guide cylinder 42 is connected to the guide film plate 43, the protective film 44 is arranged on the guide film plate 43, and the protective film 44 is arranged around the guide hole 41; in the vertical direction, the projection of the protective film 44 at least partially extends into the projection of the guide hole 41; the carrier device 5 is arranged below the clamping device 3, and the carrier device 5 includes two battery cell clamping assemblies 55, and the two battery cell clamping assemblies 55 are used to clamp the battery cell workpiece 8.

[0058] In this embodiment, when entering the shell, the carrier device 5 plays the role of clamping the battery core workpiece 8, and the lifting device 1 plays the role of driving the remaining devices except the carrier device 5 to move up and down, providing a total vertical displacement power for entering the shell, the clamping device 3 is used to clamp the shell workpiece 7, the centering device 2 can maintain the centering degree of the shell workpiece 7 when entering the shell, and the guide device 4 plays a guiding role, so that the shell workpiece 7 can be vertically mounted on the battery core workpiece 8, thereby improving the accuracy of entering the shell, and finally a commonly used control unit is used to control each device, with a higher degree of automation, higher work efficiency, and more precise control of the shell entry process.

[0059] In some embodiments, the control unit is a PLC (Programmable Logic Controller).

[0060] In some other embodiments, the control unit may also be a control device such as an industrial computer.

[0061] In some embodiments, as Figure 6 As shown, the guide device 4 also includes a guide connecting plate 45, and the guide film plate 43 includes an upper film plate 431 and a lower film plate 432. The guide cylinder 42 is connected to the guide connecting plate 45 through a floating joint, and the lower film plate 432 is fixedly connected to the guide connecting plate 45, for example, by bolts. The protective film 44 is clamped between the upper film plate 431 and the lower film plate 432, and the upper film plate 431 is installed on the lower film plate 432 by bolts, which is convenient for replacing the protective film 44 and more convenient to operate.

[0062] In some embodiments, the protective film 44 is a PI film, that is, a polyimide film, which has excellent performance and can better protect the contact area between the shell workpiece 7 and the battery core workpiece 8.

[0063] Specifically, the guide film plate 43 is U-shaped, and the two guide film plates 43 in the two guide devices 4 are close to each other to form a guide hole 41 for the shell workpiece 7 to pass through. Looking from top to bottom, the protective film 44 will protrude from the guide film plate 43 and extend into the edge of the guide hole 41, that is, when the shell workpiece 7 moves downward, it will first contact the protective film 44 instead of directly contacting the battery workpiece 8, thereby avoiding the shell opening edge of the shell workpiece 7 from directly contacting the battery workpiece 8, thereby avoiding the shell opening of the shell workpiece 7 from scratching the battery workpiece 8.

[0064] More specifically, when inserting the shell, the first section of the shell is performed first. At this time, the protective film 44 is located below the shell workpiece 7. The protective film 44 first contacts the upper surface of the battery workpiece 8 and the outer edge of the upper surface. The shell opening edge of the shell workpiece 7 only contacts the protective film 44, avoiding the shell opening edge of the shell workpiece 7 directly contacting the battery workpiece 8, and avoiding the shell opening of the shell workpiece 7 scratching the battery workpiece 8. When continuing to insert the shell, the protective film 44 extends into the gap between the battery workpiece 8 and the shell workpiece 7, which can protect the battery workpiece 8. Most of the shell workpiece 7 is sheathed on the outer wall of the battery workpiece 8 When the shell workpiece 7 is almost completely covered on the battery core workpiece 8, the second-stage shelling is performed, so that the downward movement speed of the clamping device 3 is greater than the downward movement speed of the lifting device 1, so that the protective film 44 leaves the shell workpiece 7, and the clamping device 3 moves downward so that the shell workpiece 7 is completely covered on the battery core workpiece 8, thereby completing the shelling process. It can be understood that the use of the guide device 4 with a protective film 44 can effectively prevent the shell workpiece 7 from causing damage to the surface of the battery core workpiece 8 during the shelling process, avoid scratching the battery core workpiece 8, and effectively improve the yield rate of the shelling process.

[0065] In some embodiments, the upper and lower edges of the guide film plate 43 are provided with oblique guide portions, that is, the upper and lower sides of the formed guide hole 41 are provided with oblique guide portions, which can more conveniently and quickly allow the shell workpiece 7 to pass through the guide hole 41 from top to bottom and be put on the battery core workpiece 8, and the accuracy of shell insertion is higher.

[0066] In some embodiments, as Figure 4 and Figure 5As shown, the centering device 2 includes a centering fixed seat 21, a follower sliding assembly 22, a follower connecting seat 23, a first sliding fixed plate 24, a second sliding fixed plate 25, a follower finger cylinder 26 and a follower fixed block 27. The centering fixed seat 21 is connected to the lifting device 1, the first sliding fixed plate 24 and the second sliding fixed plate 25 are arranged at intervals on the centering fixed seat 21 along the first direction, the bottom of the first sliding fixed plate 24 and the bottom of the second sliding fixed plate 25 are both provided with a follower sliding assembly 22, the follower connecting seat 23 is connected to the follower sliding assembly 22, the two guide devices 4 are arranged at intervals on the bottom of the follower connecting seat 23 along the first direction, the follower fixed block 27 is provided on the first sliding fixed plate 24, the fixed end of the follower finger cylinder 26 is connected to the follower connecting seat 23, and the movable end of the follower finger cylinder 26 is located on both sides of the follower fixed block 27 and can clamp the follower fixed block 27.

[0067] It can be understood that the centering fixed seat 21 is connected to the lifting device 1, and the clamping device 3 and the guiding device 4 are both installed on the centering fixed seat 21, so the lifting device 1 can drive the centering device 2, the clamping device 3 and the guiding device 4 to move synchronously.

[0068] Specifically, the first sliding fixing plate 24 is located in front of the second sliding fixing plate 25, and the two guide devices 4 are arranged at intervals along the front-to-back direction at the bottom of the follower connecting seat 23, one of the guide devices 4 is located below the first sliding fixing plate 24, and the other guide device 4 is located below the second sliding fixing plate 25. It can be understood that when the follower connecting seat 23 moves, it will drive the two guide devices 4 to move at the same time, ensuring that the two guide film plates 43 can be tightly attached together to form a guide hole 41 when entering the shell.

[0069] More specifically, when entering the shell, the shell workpiece 7 may produce some shaking, resulting in slight deviations in the shell. Although the deviations are too small, there is still a possibility of damaging the battery workpiece 8. Therefore, the possibility of damaging the battery workpiece 8 is reduced by setting a centering device 2. When the clamping device 3 clamps the shell workpiece 7, the two guide devices 4 will approach each other to form a guide hole 41 and clamp the shell edge of the shell workpiece 7. At this time, the follower finger cylinder 26 is started and the follower fixed block 27 is clamped. Since the follower fixed block 27 is fixedly connected to the first sliding fixed plate 24, and the first sliding fixed plate 24 is fixedly connected to the centering fixed seat 21, the follower fixed block 27 will not move. If there is a deviation, the follower finger cylinder 26 itself will move, so that the center of the follower finger cylinder 26 is aligned with the follower finger cylinder 26. When the center of the fixed block 27 is aligned, the movement of the follower finger cylinder 26 will drive the follower connecting seat 23 to move, thereby driving the two guide devices 4 to move, and then changing the position of the guide hole 41, so that the center of the guide hole 41 is aligned with the center of the battery workpiece 8, that is, the center of the shell workpiece 7 is aligned with the center of the battery workpiece 8, thereby improving the accuracy when inserting the shell, ensuring that the shell workpiece 7 can be straightly placed on the battery workpiece 8, avoiding the shell workpiece 7 from damaging the battery workpiece 8, and thus improving the yield rate of the finished battery after inserting the shell.

[0070] In some embodiments, the follower sliding assembly 22 is a linear guide rail and a linear slider. Specifically, the movement trajectory of some follower sliding assemblies 22 is forward and backward sliding, and the movement trajectory of some follower sliding assemblies 22 is left and right sliding. When the follower finger cylinder 26 itself moves, it can drive the follower connecting seat 23 to move forward and backward and left and right, that is, drive the guide hole 41 formed by the two guide devices 4 to move forward and backward and left and right, which can better perform centering.

[0071] In some embodiments, as Figure 4 As shown, the lower end of the follower fixing block 27 is provided with a follower clamping portion 271, and the movable end of the follower finger cylinder 26 is provided with two follower clamping members 28. The two follower clamping members 28 are both provided with a V-shaped groove that is compatible with the follower clamping portion 271. The design of the V-shaped groove enables the follower finger cylinder 26 to move forward and backward and left and right when clamping the follower fixing block 27. It is not just movement in one direction, but movement in two directions, which can better perform centering.

[0072] In some embodiments, as Figures 4 to 6 As shown, the guide device 4 also includes a guide sliding assembly 46, which is arranged at the bottom of the follower connecting seat 23, and the guide film plate 43 is connected to the guide sliding assembly 46. By setting the guide sliding assembly 46, the movement of the guide film plate 43 is more stable and smooth.

[0073] In some embodiments, the guide sliding assembly 46 is a linear guide rail and a linear slider, and the motion trajectory of the guide sliding assembly 46 is forward and backward sliding, so that the forward and backward movement of the guide film plate 43 is more stable and smooth.

[0074] In some embodiments, as Figure 6 As shown, the guide device 4 also includes a guide buffer 47, one end of the guide buffer 47 is connected to the guide connecting plate 45, and the other end of the guide buffer 47 is connected to the follower connecting seat 23. By setting the guide buffer 47, the movement of the guide film plate 43 can be made smoother and more stable.

[0075] In some embodiments, as Figure 7 As shown, the clamping device 3 includes a clamping displacement assembly 31, a clamping finger cylinder 32, a clamping connecting seat 33 and a clamping block 34. The clamping displacement assembly 31 is connected to the centering fixed seat 21, the fixed end of the clamping finger cylinder 32 is connected to the clamping displacement assembly 31, the movable end of the clamping finger cylinder 32 is connected to the clamping connecting seat 33, and the clamping block 34 is connected to the clamping connecting seat 33.

[0076] Specifically, the clamping device 3 also includes a clamping fixed seat 35, the clamping fixed seat 35 is connected to the clamping displacement assembly 31, the fixed end of the clamping finger cylinder 32 is connected to the clamping fixed seat 35, and two clamping connecting seats 33 are connected on both sides of the movable end of the clamping finger cylinder 32. Each clamping connecting seat 33 is provided with a clamping block 34. When the clamping finger cylinder 32 is started, it can drive the two clamping blocks 34 to approach each other and clamp the shell workpiece 7, and the clamping effect is good.

[0077] In some embodiments, the clamping device 3 also includes a clamping sliding assembly 36, which is a linear guide rail and a linear slider. The movement trajectory of the clamping sliding assembly 36 is left and right movement. The clamping connecting seat 33 is connected to the clamping sliding assembly 36, making the movement of the clamping connecting seat 33 smoother.

[0078] In some embodiments, the clamping displacement assembly 31 is a linear module, which can more accurately control the speed of the up and down movement of the housing workpiece 7.

[0079] In some embodiments, as Figure 7As shown, the clamping device 3 also includes a clamping detection unit 37, which is arranged on the clamping connecting seat 33, and the clamping block 34 is provided with a shell clamping groove 341 and a detection avoidance hole 342. The shell clamping groove 341 is connected to the detection avoidance hole 342, and the clamping detection unit 37 is located on the side of the detection avoidance hole 342 away from the shell clamping groove 341. It can be understood that the clamping detection unit 37 can detect the presence of the shell workpiece 7 through the detection avoidance hole 342. During the process of entering the shell, if the shell workpiece 7 falls, the clamping detection unit 37 can also respond in the first time, so as to remind the staff, and the degree of automation is higher.

[0080] In some embodiments, the shell clamping groove 341 is a T-shaped slot, and the front and rear ends of the clamping block 34 can clamp the front and rear sides of the shell workpiece 7. The upper side of the clamping block 34 has a protruding part. When inserting the shell, the protruding part on the upper side of the clamping block 34 can better press the shell workpiece 7 from top to bottom toward the battery core workpiece 8, and can complete the shell insertion process more accurately and quickly.

[0081] In some embodiments, the clamping detection unit 37 is a photoelectric switch, which responds more quickly.

[0082] In some embodiments, as 1 to Figure 3 As shown, the lifting device 1 includes a lifting base 11 and a lifting displacement assembly 12. The lifting displacement assembly 12 is arranged on the lifting base 11, and the centering fixed seat 21 is connected to the lifting displacement assembly 12. By setting the lifting displacement assembly 12, the up and down movement of the centering fixed seat 21 can be better controlled.

[0083] Specifically, the lifting displacement assembly 12 is a linear module, which can more accurately control the speed of each device moving up and down.

[0084] In some embodiments, as Figure 8 and Figure 9 As shown, the carrier device 5 includes a carrier base 51, a carrier positioning plate 52, a carrier cylinder 53, a carrier clamping link assembly 54 and two battery cell clamping assemblies 55. The carrier positioning plate 52 is connected to the carrier base 51. The two battery cell clamping assemblies 55 are both slidably connected to the carrier base 51. The two battery cell clamping assemblies 55 are respectively arranged on both sides of the carrier positioning plate 52. The carrier clamping link assembly 54 is respectively connected to the two battery cell clamping assemblies 55. The fixed end of the carrier cylinder 53 is connected to the carrier base 51, and the movable end of the carrier cylinder 53 is connected to the carrier clamping link assembly 54, so as to drive the carrier clamping link assembly 54 to drive the two battery cell clamping assemblies 55 to move closer to or away from each other.

[0085] Specifically, the carrier positioning plate 52 is fixedly connected to the carrier base 51. The carrier positioning plate 52 is provided with a battery cell positioning groove for fixing the battery cell workpiece 8. The two battery cell clamping assemblies 55 are respectively located on the left and right sides of the carrier positioning plate 52. During transportation, the battery cell workpiece 8 is placed on the battery cell positioning groove. The carrier cylinder 53 drives the two battery cell clamping assemblies 55 to approach each other and clamp the battery cell workpiece 8 through the carrier clamping connecting rod assembly 54 to prevent the battery cell workpiece 8 from falling.

[0086] In some embodiments, as Figure 9 As shown, the carrier device 5 also includes a plurality of carrier sliding assemblies 56, and the plurality of carrier sliding assemblies 56 are all arranged on the carrier base 51, the battery cell clamping assembly 55 includes a battery cell clamping seat 551 and a battery cell clamping member 552, the carrier clamping link assembly 54 includes a carrier guide plate 541, a carrier guide column 542 and a guide elastic member 543, the battery cell clamping seat 551 is connected to one of the carrier sliding assemblies 56, the battery cell clamping member 552 is arranged on the battery cell clamping seat 551, the carrier guide plate 541 is connected to one of the carrier sliding assemblies 56, the carrier guide column 542 is connected to the battery cell clamping seat 551, the carrier guide plate 541 is provided with a carrier guide groove 544, the carrier guide column 542 is slidably connected to the carrier guide groove 544, one end of the guide elastic member 543 is connected to the carrier base 51, and the other end of the guide elastic member 543 is connected to the carrier guide plate 541.

[0087] Specifically, if Figure 9 As shown, when viewed from above, the carrier guide plate 541 is provided with two carrier guide grooves 544, and the two carrier guide grooves 544 are symmetrically arranged about the central axis of the carrier guide plate 541. The carrier guide groove 544 on the left side extends obliquely from the central axis of the carrier guide plate 541 toward the left and the front side, and the carrier guide groove 544 on the right side extends obliquely from the central axis of the carrier guide plate 541 toward the right and the front side. It can be understood that when the carrier guide plate 541 moves backward, the two battery cell clamping seats 551 can move relatively in the direction away from the carrier guide plate 541, that is, the two battery cell clamping members 552 will move away from the battery cell workpiece 8. When the carrier guide plate 541 moves forward, the two battery cell clamping seats 551 can move relatively in the direction close to the carrier guide plate 541, that is, the two battery cell clamping members 552 will approach and clamp the battery cell workpiece 8. Through such a linkage method, the two battery cell clamping members 552 can be driven to move at the same time, with better synchronization, and can better clamp or release the battery cell workpiece 8.

[0088] Furthermore, the guide elastic member 543 is a spring, and the guide elastic member 543 can keep the carrier guide plate 541 moving forward, even if the two battery cell clamping members 552 keep approaching each other, so as to clamp the battery cell workpiece 8 more firmly.

[0089] In some embodiments, the battery cell clamping member 552 is provided with a battery cell clamping groove adapted to the battery cell workpiece 8 , which can clamp the battery cell workpiece 8 more firmly.

[0090] In some embodiments, the carrier sliding assembly 56 is a linear guide rail and a linear slider. The movement trajectory of the carrier sliding assembly 56 connected to the battery cell clamping seat 551 is left and right movement, and the movement trajectory of the carrier sliding assembly 56 connected to the carrier guide plate 541 is forward and backward movement, making the movement of the battery cell connection seat and the carrier guide plate 541 smoother.

[0091] In some embodiments, as Figures 1 to 3 As shown, the battery cell shelling equipment also includes two in-place detection devices 6, which are respectively arranged on both sides of the carrier device 5; the in-place detection device 6 includes an in-place detection support rod 61 and an in-place detection unit 62, and the in-place detection unit 62 is arranged on the in-place detection support rod 61, and the in-place detection unit 62 is located above the carrier device 5. Specifically, viewed from above, the two in-place detection devices 6 are diagonally distributed on the left rear side and the right front side of the carrier device 5, which can better detect whether the shell workpiece 7 has reached the top of the battery cell workpiece 8.

[0092] In some embodiments, the in-position detection unit 62 is a photoelectric switch.

[0093] In some embodiments, there are multiple carrier devices 5 , for example, three, and an external conveying device is used to convey multiple carrier devices 5 to perform the shelling process in sequence, which improves work efficiency.

[0094] The embodiment of the present invention further provides a method for inserting a battery cell into a shell. By using the above-mentioned battery cell inserting device, the accuracy of inserting the battery cell into the shell and the yield rate of the inserting the battery cell into the shell are further improved.

[0095] An embodiment of the present invention provides a method for inserting a battery cell into a shell, comprising the following steps:

[0096] S1. An external conveying device conveys the carrier device 5 with the battery workpiece 8 to the bottom of the clamping device 3. For example, an external conveyor belt can be used to sequentially carry out the shelling process on multiple carrier devices 5 with the battery workpiece 8 placed thereon. An external manipulator conveys the shell workpiece 7 to the clamping device 3. The clamping finger cylinder 32 drives the clamping blocks 34 to approach each other and clamp the shell workpiece 7.

[0097] S2, the clamping displacement assembly 31 drives the clamping finger cylinder 32 to move the shell workpiece 7 downward to the guide device 4;

[0098] S3. The guide cylinder 42 drives the guide film plate 43 to move toward the shell workpiece 7. The two guide film plates 43 in the two guide devices 4 approach each other and form a guide hole 41. The lower end of the shell workpiece 7 is located in the guide hole 41, and the protective film 44 is located below the shell workpiece 7.

[0099] S4, the lifting device 1 drives the centering device 2 to drive the clamping device 3 and the guide device 4 to move downward to above the battery workpiece 8, and the two battery clamping assemblies 55 release the battery workpiece 8. Specifically, when the in-position detection unit 62 detects the shell workpiece 7, it means that the shell workpiece 7 has moved above the battery workpiece 8 and is close to the upper surface of the battery workpiece 8;

[0100] S5. The follower finger cylinder 26 clamps the follower fixed block 27, and the follower finger cylinder 26 drives the follower connecting seat 23 to move, and the follower connecting seat 23 drives the guide device 4 to move, so that the guide hole 41 formed between the two guide devices 4 is always located directly above the battery workpiece 8, and the centering of the guide hole 41 is maintained;

[0101] S6, the first stage of shell insertion is performed, the lifting device 1 drives the centering device 2 to drive the clamping device 3 and the guide device 4 to continue to move downward, and when the shell workpiece 7 moves downward, the protective film 44 is clamped between the shell workpiece 7 and the battery core workpiece 8;

[0102] S7, when the shell workpiece 7 is mostly covered on the outer wall of the battery core workpiece 8, the shell is inserted in two stages, and the downward movement speed of the clamping displacement component 31 is greater than the downward movement speed of the lifting device 1, so that the protective film 44 leaves the shell workpiece 7, and the clamping displacement component 31 drives the shell workpiece 7 to be completely covered on the battery core workpiece 8;

[0103] S8, the two guide devices 4 move away from each other and leave the shell workpiece 7, the follower finger cylinder 26 releases and leaves the follower fixed block 27, and the carrier device 5 clamps the shell workpiece 7 on the battery core workpiece 8;

[0104] S9, the clamping finger cylinder 32 drives the clamping blocks 34 to move away from each other and leave the shell workpiece 7, the clamping displacement assembly 31 drives the clamping finger cylinder 32 to drive the clamping block 34 to move upward to the initial position, the lifting device 1 drives the centering device 2 to drive the clamping device 3 and the guide device 4 to move upward to the initial position, completing the entire battery cell shelling process.

[0105] The above descriptions are only partial embodiments of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A battery cell shelling device, characterized in that: include: Lifting device (1); A centering device (2), the centering device (2) being provided on the lifting device (1); A clamping device (3), the clamping device (3) being provided on the centering device (2), and the clamping device (3) being used for clamping a shell workpiece (7); A guide device (4), wherein the number of the guide devices (4) is two, the two guide devices (4) are symmetrically arranged on the centering device (2), and a guide hole (41) is formed between the two guide devices (4); the guide device (4) comprises a guide cylinder (42), a guide film plate (43) and a protective film (44); the fixed end of the guide cylinder (42) is connected to the centering device (2), the movable end of the guide cylinder (42) is connected to the guide film plate (43), the protective film (44) is arranged on the guide film plate (43), and the protective film (44) is arranged around the guide hole (41); in the vertical direction, the projection of the protective film (44) at least partially extends into the projection of the guide hole (41); A carrier device (5), the carrier device (5) being arranged below the clamping device (3), the carrier device (5) comprising two battery cell clamping assemblies (55), the two battery cell clamping assemblies (55) being used to clamp the battery cell workpiece (8); a control unit, the control unit being electrically connected to the lifting device (1), the centering device (2), the clamping device (3), the guiding device (4), and the carrier device (5); The centering device (2) comprises a centering fixed seat (21), a follower sliding assembly (22), a follower connecting seat (23), a first sliding fixed plate (24), a second sliding fixed plate (25), a follower finger cylinder (26) and a follower fixed block (27), wherein the centering fixed seat (21) is connected to the lifting device (1), the first sliding fixed plate (24) and the second sliding fixed plate (25) are arranged on the centering fixed seat (21) at intervals along the first direction, and the bottom of the first sliding fixed plate (24) and the second sliding fixed plate (25) are connected to the centering fixed seat (21) at intervals along the first direction. 5) is provided with the following sliding assembly (22) at the bottom, the following connecting seat (23) is connected to the following sliding assembly (22), the two guiding devices (4) are arranged at intervals along the first direction at the bottom of the following connecting seat (23), the following fixed block (27) is arranged on the first sliding fixed plate (24), the fixed end of the following finger cylinder (26) is connected to the following connecting seat (23), and the movable end of the following finger cylinder (26) is located on both sides of the following fixed block (27) and can clamp the following fixed block (27); The clamping device (3) comprises a clamping displacement assembly (31), a clamping finger cylinder (32), a clamping connection seat (33) and a clamping block (34), wherein the clamping displacement assembly (31) is connected to the centering fixed seat (21), the fixed end of the clamping finger cylinder (32) is connected to the clamping displacement assembly (31), the movable end of the clamping finger cylinder (32) is connected to the clamping connection seat (33), and the clamping block (34) is connected to the clamping connection seat (33).

2. The battery cell shelling device according to claim 1, characterized in that: The guide device (4) further comprises a guide sliding assembly (46), wherein the guide sliding assembly (46) is arranged at the bottom of the follower connecting seat (23), and the guide film plate (43) is connected to the guide sliding assembly (46).

3. The battery cell shelling device according to claim 1, characterized in that: The clamping device (3) further comprises a clamping detection unit (37), wherein the clamping detection unit (37) is provided on the clamping connection seat (33), and the clamping block (34) is provided with a shell clamping groove (341) and a detection avoidance hole (342), wherein the shell clamping groove (341) is communicated with the detection avoidance hole (342), and the clamping detection unit (37) is located on a side of the detection avoidance hole (342) away from the shell clamping groove (341).

4. The battery cell shell insertion device according to claim 1, characterized in that: The lifting device (1) comprises a lifting base (11) and a lifting displacement assembly (12); the lifting displacement assembly (12) is arranged on the lifting base (11); and the centering fixing seat (21) is connected to the lifting displacement assembly (12).

5. The battery cell shell insertion device according to claim 1, characterized in that: The carrier device (5) comprises a carrier base (51), a carrier positioning plate (52), a carrier cylinder (53), a carrier clamping link assembly (54) and two battery cell clamping assemblies (55), wherein the carrier positioning plate (52) is connected to the carrier base (51), the two battery cell clamping assemblies (55) are both slidably connected to the carrier base (51), the two battery cell clamping assemblies (55) are respectively arranged on both sides of the carrier positioning plate (52), the carrier clamping link assembly (54) is respectively connected to the two battery cell clamping assemblies (55), the fixed end of the carrier cylinder (53) is connected to the carrier base (51), and the movable end of the carrier cylinder (53) is connected to the carrier clamping link assembly (54), so as to drive the carrier clamping link assembly (54) to drive the two battery cell clamping assemblies (55) to move closer to or away from each other.

6. The battery cell shell insertion device according to claim 5, characterized in that: The carrier device (5) further comprises a plurality of carrier sliding assemblies (56), wherein the plurality of carrier sliding assemblies (56) are all arranged on the carrier base (51), the battery cell clamping assembly (55) comprises a battery cell clamping seat (551) and a battery cell clamping member (552), the carrier clamping link assembly (54) comprises a carrier guide plate (541), a carrier guide column (542) and a guide elastic member (543), the battery cell clamping seat (551) is connected to one of the carrier sliding assemblies (56), and the battery cell clamping member (552) is arranged on the carrier base (51). A battery cell clamping seat (551), the carrier guide plate (541) is connected to one of the carrier sliding assemblies (56), the carrier guide column (542) is connected to the battery cell clamping seat (551), the carrier guide plate (541) is provided with a carrier guide groove (544), the carrier guide column (542) is slidably connected to the carrier guide groove (544), one end of the guide elastic member (543) is connected to the carrier base (51), and the other end of the guide elastic member (543) is connected to the carrier guide plate (541).

7. The battery cell shell insertion device according to claim 1, characterized in that: The battery cell shell insertion device further comprises two in-place detection devices (6), the two in-place detection devices (6) being respectively arranged on both sides of the carrier device (5); the in-place detection device (6) comprises an in-place detection support rod (61) and an in-place detection unit (62), the in-place detection unit (62) being arranged on the in-place detection support rod (61), and the in-place detection unit (62) being located above the carrier device (5).

8. A method for inserting a battery cell into a shell, characterized in that: The battery cell shell insertion device according to claim 1 includes the following steps: S1, the external conveying device conveys the carrier device (5) on which the battery core workpiece (8) is placed to the bottom of the clamping device (3), the external manipulator conveys the shell workpiece (7) to the clamping device (3), and the clamping finger cylinder (32) drives the clamping blocks (34) to approach each other and clamp the shell workpiece (7); S2, the clamping displacement assembly (31) drives the clamping finger cylinder (32) to move the shell workpiece (7) downward to the guide device (4); S3, the guide cylinder (42) drives the guide film plate (43) to move toward the shell workpiece (7), the two guide film plates (43) in the two guide devices (4) approach each other and form a guide hole (41), the lower end of the shell workpiece (7) is located in the guide hole (41), and the protective film (44) is located below the shell workpiece (7); S4, the lifting device (1) drives the centering device (2) to drive the clamping device (3) and the guide device (4) to move downward to above the battery workpiece (8), and the two battery clamping assemblies (55) release the battery workpiece (8); S5, the follower finger cylinder (26) clamps the follower fixed block (27), the follower finger cylinder (26) drives the follower connecting seat (23) to move, and the follower connecting seat (23) drives the guide device (4) to move, so that the guide hole (41) formed between the two guide devices (4) is always located directly above the battery workpiece (8), and the guide hole (41) is kept centered; S6, the first stage of shell insertion is performed, the lifting device (1) drives the centering device (2) to drive the clamping device (3) and the guide device (4) to continue to move downward, and when the shell workpiece (7) moves downward, the protective film (44) is clamped between the shell workpiece (7) and the battery core workpiece (8); S7, when the shell workpiece (7) is mostly covered on the outer wall of the battery core workpiece (8), the shell is inserted in two stages, the downward movement speed of the clamping displacement component (31) is greater than the downward movement speed of the lifting device (1), so that the protective film (44) leaves the shell workpiece (7), and the clamping displacement component (31) drives the shell workpiece (7) to be completely covered on the battery core workpiece (8); S8, the two guide devices (4) move away from each other and leave the shell workpiece (7), the follower finger cylinder (26) is released and leaves the follower fixed block (27), and the carrier device (5) clamps the shell workpiece (7) on the battery core workpiece (8); S9, the clamping finger cylinder (32) drives the clamping blocks (34) to move away from each other and away from the shell workpiece (7), the clamping displacement assembly (31) drives the clamping finger cylinder (32) to drive the clamping block (34) to move upward to the initial position, the lifting device (1) drives the centering device (2) to drive the clamping device (3) and the guide device (4) to move upward to the initial position, and the entire battery cell shelling process is completed.

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