Battery cell blanking clamping needle mechanism

Abstract

The utility model relates to a battery cell blanking needle clamping mechanism which comprises an inner blanking device and an outer blanking device, and the inner blanking device and the outer blanking device respectively carry out blanking operation on an inner battery cell and an outer battery cell on the inner side and the outer side of a blanking station winding needle; the inner discharging device comprises a first discharging assembly and a second discharging assembly, the outer discharging device comprises a third discharging assembly, and the first discharging assembly, the second discharging assembly and the third discharging assembly are arranged on the inner side, the middle portion and the outer side in the length direction of a winding needle of a discharging station correspondingly. When double battery cell blanking is carried out, the first blanking assembly and the second blanking assembly cooperate to clamp an inner battery cell on a blanking station winding needle, and the third blanking assembly clamps an outer battery cell on the blanking station winding needle and respectively carries the inner battery cell and the outer battery cell to be separated from the winding needle which does a needle drawing action. Each group of blanking assembly is provided with two pairs of clamping needles, and the six pairs of clamping needles are respectively used for clamping an inner battery cell and an outer battery cell on a winding needle, so that the blanking stability of the battery cells is ensured, and the quality of the battery cells is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a battery core blanking clamping needle mechanism. Background Art

[0002] The winding method is widely used in the production of square lithium-ion batteries due to its high efficiency and low cost. At present, in the production process of power lithium batteries, the winding machine winds the positive and negative electrodes and the diaphragm to form the battery cell. After the battery cell is wound on the winding needle, the inner and outer clamping needles of the clamping needle mechanism are usually used to clamp the battery cell, and the winding needle is pulled out to realize the unloading. With the development of the lithium battery industry, the development of winding equipment has become more and more perfect. In order to improve efficiency and save space, a highly integrated and intelligent multi-cell winding equipment integrating laser ear forming, slitting and winding has emerged. However, the existing clamping needle unloading method is not ideal for this type of battery cell winding equipment, and the battery cell is prone to wrinkling. Therefore, it is necessary to optimize the existing clamping needle unloading method to ensure the unloading stability and battery cell quality. Utility Model Content

[0003] In order to solve the deficiencies of the prior art, the utility model provides a battery core blanking needle clamping mechanism.

[0004] The utility model provides a battery cell blanking clamping needle mechanism, comprising an inner blanking device and an outer blanking device arranged at a blanking station of a winding machine, wherein the inner blanking device and the outer blanking device respectively perform blanking operations on inner batteries and outer batteries inside and outside a winding needle of the blanking station; the inner blanking device comprises a first blanking component and a second blanking component, and the outer blanking device comprises a third blanking component, and the first blanking component, the second blanking component and the third blanking component are respectively arranged on the inner side, the middle part and the outer side of the winding needle of the blanking station in the length direction; when performing double battery cell blanking, the first blanking component and the second blanking component cooperate to clamp the inner battery cell on the winding needle of the blanking station, and the third blanking component clamps the outer battery cell on the winding needle of the blanking station, and respectively transports the inner battery cell and the outer battery cell away from the winding needle that performs the needle extraction action.

[0005] In some embodiments, the first material removal component, the second material removal component and the third material removal component all include a first clamping jaw and a second clamping jaw symmetrically arranged on the left and right sides of the winding needle of the material removal station, the first clamping jaw and the second clamping jaw all include a first clamping needle, a second clamping needle and a driving member, the second clamping needle is installed at the driving end of the driving member, and the driving member drives the second clamping needle to open and close relative to the first clamping needle. When performing double-cell material removal, the first clamping needle is inserted into the battery cell along the winding needle of the material removal station, and the second clamping needle moves to the outside of the battery cell, and the driving member drives the first clamping needle and the second clamping needle to clamp the battery cell.

[0006] In some of the embodiments, the first clamping needle has an arc guide surface and an arc support surface, the arc guide surface cooperates with the winding needle groove of the blanking station winding needle, and the arc support surface cooperates with the inner wall of the inner hole of the battery cell.

[0007] In some embodiments, the lengths of the first clamping needle and the second clamping needle of the first blanking component are both smaller than half the length of the battery cell, and the lengths of the first clamping needle and the second clamping needle of the second blanking component are both smaller than half the length of the battery cell.

[0008] In some embodiments, the length of the first clamping needle is the same as the length of the second clamping needle, and the length of the first clamping needle of the second blanking assembly is smaller than the distance between the inner battery cell and the outer battery cell.

[0009] In some embodiments, the lengths of the first clamping needle and the second clamping needle of the third blanking assembly are greater than the length of the battery cell.

[0010] In some embodiments, a soft rubber pad is provided at one end of the second clamping pin that contacts the battery cell.

[0011] In some embodiments, the first blanking assembly, the second blanking assembly and the third blanking assembly are all connected to a moving device, and the moving device includes a Z-axis moving assembly, an X-axis moving assembly and a Y-axis moving assembly that are sequentially connected in a transmission manner, and the first clamping jaw and the second clamping jaw of the first blanking assembly, the second blanking assembly and the third blanking assembly are respectively connected to a group of Y-axis moving assemblies; the Z-axis moving assembly drives the first clamping jaw and the second clamping jaw of the first blanking assembly, the second blanking assembly and the third blanking assembly to move along the Z-axis direction, the X-axis moving assembly drives the first clamping jaw and the second clamping jaw of the first blanking assembly, the second blanking assembly and the third blanking assembly to move along the X-axis direction, and the Y-axis moving assembly drives the first clamping jaw and the second clamping jaw of the first blanking assembly, the second blanking assembly and the third blanking assembly to move along the Y-axis direction.

[0012] In some embodiments, the Y-axis moving assembly includes a Y-axis moving seat, and the first clamping jaw and the second clamping jaw of the first material removal assembly, the second material removal assembly and the third material removal assembly are respectively installed on a corresponding Y-axis moving seat, and each Y-axis moving seat is connected to a Y-axis driving member, and the Y-axis driving member drives the corresponding Y-axis moving seat to move in the Y-axis direction.

[0013] In some embodiments, the driving member is a cylinder, and the driving member drives the second clamping needle to move along the X-axis direction.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the inner battery cell is clamped by the first blanking assembly and the second blanking assembly, the outer battery cell is clamped by the third blanking assembly, each group of blanking assemblies has two pairs of clamping needles, and the inner and outer battery cells on the winding needles of the blanking station are clamped respectively by six pairs of clamping needles, thereby ensuring the stability of battery cell blanking and improving the quality of the battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is one of the three-dimensional structural schematic diagrams of the battery cell blanking clamping needle mechanism of the embodiment of the present application.

[0016] Figure 2 This is the second three-dimensional structural schematic diagram of the battery cell blanking clamping needle mechanism of the embodiment of the present application.

[0017] Figure 3 yes Figure 2 Schematic diagram of the enlarged structure of part A.

[0018] Figure 4 It is a schematic diagram of the planar structure of the battery cell blanking and clamping needle mechanism of the embodiment of the present application.

[0019] Reference numerals: 100, large plate; 110, winding station; 120, unloading station; 200, winding needle; 210, winding needle groove; 220, inner area; 230, middle area; 240, outer area; 300, inner battery cell; 400, outer battery cell;

[0020] 1. Internal feeding device; 11. First feeding assembly; 12. Second feeding assembly;

[0021] 2. External unloading device; 21. Third unloading assembly;

[0022] 31. first clamping jaw; 32. second clamping jaw;

[0023] 41. first clamping needle; 411. arc guide surface; 412. arc support surface; 42. second clamping needle; 421. soft rubber pad; 43. driving member;

[0024] 5. Mobile device;

[0025] 6. Z-axis moving assembly; 61. first Z-axis moving assembly; 611. first lifting platform; 62. second Z-axis moving assembly; 621. second lifting platform;

[0026] 7, X-axis moving assembly; 71, first X-axis moving assembly; 711, first moving platform; 712, second moving platform; 72, second X-axis moving assembly; 721, third moving platform; 722, fourth moving platform;

[0027] 8. Y-axis moving assembly; 81. first Y-axis moving assembly; 811. first Y-axis moving seat; 812. first Y-axis driving member; 813. first Y-axis guide rail; 82. second Y-axis moving assembly; 821. second Y-axis moving seat; 822. second Y-axis driving member; 823. second Y-axis guide rail; 83. third Y-axis moving assembly; 831. third Y-axis moving seat; 832. third Y-axis driving member; 833. third Y-axis guide rail; 84. fourth Y-axis moving assembly; 841. fourth Y-axis moving seat; 842. fourth Y-axis driving member; 843. fourth Y-axis guide rail; 85. fifth Y-axis moving assembly; 851. fifth Y-axis moving seat; 852. fifth Y-axis driving member; 86. sixth Y-axis moving assembly; 861. sixth Y-axis moving seat; 862. sixth Y-axis driving member. DETAILED DESCRIPTION

[0028] The specific implementation modes of the present utility model are introduced with reference to the accompanying drawings.

[0029] refer to Figure 1 The figure is a three-dimensional structural schematic diagram of the battery cell unloading clamping needle mechanism, in the middle is a large plate 100 of the winding machine, on the left side of the large plate 100 is the winding drive mechanism of the winding machine, on the right side of the large plate 100 are the winding station 110 and the unloading station 120, the battery cell unloading clamping needle mechanism is arranged at the unloading station 120, the winding machine of the present application is a dual-cell winding machine, two battery cells are wound on the winding needle 200 at the same time, and the battery cell unloading clamping needle mechanism can stably clamp the inner battery cell 300 and the outer battery cell 400 on the winding needle 200 for unloading operation.

[0030] refer to Figures 1 to 4 A battery cell blanking and clamping needle mechanism, comprising an inner blanking device 1 and an outer blanking device 2 arranged at a blanking station 120 of a winding machine, wherein the inner blanking device 1 and the outer blanking device 2 respectively perform blanking operations on inner batteries 300 and outer batteries 400 inside and outside the winding needle 200 of the blanking station 120; the inner blanking device 1 comprises a first blanking component 11 and a second blanking component 12, and the outer blanking device 2 comprises a third blanking component 21, wherein the first blanking component 11, the second blanking component 12 and the third blanking component 2 1 are respectively arranged in the inner area 220, the middle area 230 and the outer area 240 in the length direction of the winding needle 200 of the unloading station 120; when unloading double cells, the first unloading assembly 11 and the second unloading assembly 12 cooperate to clamp the inner cell 300 on the winding needle 200 of the unloading station 120, and the third unloading assembly 21 clamps the outer cell 400 on the winding needle 200 of the unloading station 120, and respectively moves the inner cell 300 and the outer cell 400 away from the winding needle 200 that is performing the needle extraction action.

[0031] The battery cell unloading clamping needle mechanism of the embodiment of the present application clamps the inner battery cell 300 through the first unloading component 11 and the second unloading component 12, and clamps the outer battery cell 400 through the third unloading component 21. Each group of unloading components has two pairs of clamping needles. The six pairs of clamping needles are used to clamp the inner and outer battery cells on the winding needle 200 of the unloading station 120 respectively, thereby ensuring the stability of battery cell unloading and improving the quality of the battery cells.

[0032] In order to better clamp the battery cell when unloading the assembly, in this embodiment, refer to Figure 3 and Figure 4 The first blanking component 11, the second blanking component 12 and the third blanking component 21 all include a first clamping jaw 31 and a second clamping jaw 32 symmetrically arranged on the left and right sides of the winding needle 200 of the blanking station 120. The first clamping jaw 31 and the second clamping jaw 32 all include a first clamping needle 41, a second clamping needle 42 and a driving member 43. The second clamping needle 42 is installed at the driving end of the driving member 43. The driving member 43 drives the second clamping needle 42 to open and close relative to the first clamping needle 41. When blanking double batteries, the first clamping needle 41 is inserted into the battery cell along the winding needle 200 of the blanking station 120, and the second clamping needle 42 moves to the outside of the battery cell. The driving member 43 drives the first clamping needle 41 and the second clamping needle 42 to clamp the battery cell.

[0033] It is understandable that, with such an arrangement, the second clamping needle 42 is driven to move toward the first clamping needle 41 by the driving member 43, thereby clamping the battery cell between the first clamping needle 41 and the second clamping needle 42, and the first clamping needle 41 and the second clamping needle 42 perform opening and closing movements, which is easy to control.

[0034] In order to better insert the first clamping needle 41 into the interior of the battery core, in this embodiment, refer to Figure 3 The first clamping needle 41 has an arc guide surface 411 and an arc support surface 412. The arc guide surface 411 cooperates with the winding needle groove 210 of the winding needle 200 of the blanking station 120, and the arc support surface 412 cooperates with the inner wall of the inner hole of the battery cell.

[0035] It can be understood that, with such a configuration, the axis of the winding needle 200 is a winding needle groove 210 that penetrates the winding needle 200, and the arc guide surface 411 is in contact with the winding needle groove 210, so that the first clamping needle 41 can move along the winding needle groove 210, thereby stably inserting the first clamping needle 41 into the battery cell, and at the same time allowing the winding needle 200 to be withdrawn more smoothly, and the arc support surface 412 is in contact with the inner wall of the inner hole of the battery cell, so that the first clamping needle 41 can better support the inner wall of the battery cell, thereby avoiding creases and wrinkles on the inner wall of the battery cell during the process of clamping the battery cell, withdrawing the winding needle 200, and transporting the battery cell.

[0036] It should be further explained that there is not much space on the side of the blanking station 120 close to the large board 100 for the first blanking component 11 to move along the X-axis. If the first clamping needle 41 of the first blanking component 11 is too long, there needs to be enough space for the first clamping needle 41 to be inserted into the inner battery cell 300 from the side of the large board 100, which increases the difficulty of space design on one side of the large board 100 and is not conducive to the design of other structures of the winding machine.

[0037] In order to better be compatible with the rest of the winding machine structure, in this embodiment, reference Figure 3 and Figure 4 The lengths of the first clamping needle 41 and the second clamping needle 42 of the first blanking component 11 are both smaller than half the length of the battery cell, and the lengths of the first clamping needle 41 and the second clamping needle 42 of the second blanking component 12 are both smaller than half the length of the battery cell.

[0038] It can be understood that, in this arrangement, the first clamping needle 41 of the first blanking component 11 and the first clamping claw 31 of the second blanking component 12 are respectively inserted into the inner hole of the inner battery cell 300 along the winding needle groove 210 at the inner end surface and the outer end surface of the inner battery cell 300, and the first clamping needle 41 of the first blanking component 11 is shorter, so that the first clamping needle 41 of the first blanking component 11 can be inserted into the inner hole of the inner battery cell 300 from the shorter distance between the large plate 100 and the inner end surface of the inner battery cell 300; half of the battery cell The first clamping needle 41 and the second clamping needle 42 of the first blanking component 11 and the first clamping needle 41 and the second clamping needle 42 of the second blanking component 12 can ensure that when the first clamping needle 41 is inserted into the inner hole of the battery cell, the two first clamping needles 41 of the first blanking component 11 will not collide with the two first clamping needles 41 of the second blanking component 12, and the two second clamping needles 42 of the first blanking component 11 will not collide with the two second clamping needles 42 of the second blanking component 12, thereby protecting the safety of the clamping needles.

[0039] In order to smoothly insert the first clamping needle 41 of the second blanking assembly 12 into the inner hole of the inner battery cell 300, in this embodiment, Figure 3 and Figure 4 The length of the first clamping needle 41 is the same as the length of the second clamping needle 42 , and the length of the first clamping needle 41 of the second blanking assembly 12 is smaller than the distance between the inner battery cell 300 and the outer battery cell 400 .

[0040] It can be understood that, with such a configuration, the length of the first clamping needle 41 of the second blanking component 12 is smaller than the distance between the inner battery cell 300 and the outer battery cell 400, so that the first clamping needle 41 of the second blanking component 12 can move into the winding needle groove 210 in the distance between the inner battery cell 300 and the outer battery cell 400, and then be inserted into the inner hole of the inner battery cell 300 along the winding needle groove 210, thereby preventing the first clamping needle 41 of the second blanking component 12 from hitting the inner battery cell 300 and the outer battery cell 400.

[0041] In order to stably clamp the outer battery cell 400, in this embodiment, refer to Figure 3 and Figure 4 The lengths of the first clamping needle 41 and the second clamping needle 42 of the third blanking assembly 21 are greater than the length of the battery cell.

[0042] It can be understood that such a configuration ensures that the entire outer battery cell 400 is clamped by the first clamping needle 41 and the second clamping needle 42 of the third blanking component 21, through the first clamping needle 41 and the second clamping needle 42 of the third blanking component 21 of relatively large length, thereby stably clamping the outer battery cell 400 and preventing the outer battery cell 400 from wrinkling.

[0043] In order to protect the battery cell, in this embodiment, reference Figure 3 A soft rubber pad 421 is provided at one end of the second clamping pin 42 that contacts the battery cell.

[0044] It is understandable that, with such a configuration, the relatively soft rubber pad 421 is in contact with the outer wall of the battery cell, thereby protecting the outer wall of the battery cell and preventing the second clamping needle 42 from scratching the battery cell.

[0045] In order to drive the gripper to clamp and carry the battery cell, in this embodiment, reference Figure 2 and Figure 3 The first material discharging component 11, the second material discharging component 12 and the third material discharging component 21 are all connected with a moving device 5, and the moving device 5 includes a Z-axis moving component 6, an X-axis moving component 7 and a Y-axis moving component 8 which are sequentially connected by transmission. The first clamping jaw 31 and the second clamping jaw 32 of the first material discharging component 11, the second material discharging component 12 and the third material discharging component 21 are respectively connected with a group of Y-axis moving components 8; the Z-axis moving component 6 drives the first clamping jaw 31 and the second clamping jaw 32 of the first material discharging component 11, the second material discharging component 12 and the third material discharging component 21 to move along the Z-axis direction, the X-axis moving component 7 drives the first clamping jaw 31 and the second clamping jaw 32 of the first material discharging component 11, the second material discharging component 12 and the third material discharging component 21 to move along the X-axis direction, and the Y-axis moving component 8 drives the first clamping jaw 31 and the second clamping jaw 32 of the first material discharging component 11, the second material discharging component 12 and the third material discharging component 21 to move along the Y-axis direction.

[0046] It should be further explained that the Y-axis moving assembly 8 has six groups, namely the first Y-axis moving assembly 81, the second Y-axis moving assembly 82, the third Y-axis moving assembly 83, the fourth Y-axis moving assembly 84, the fifth Y-axis moving assembly 85 and the sixth Y-axis moving assembly 86; the Z-axis moving assembly 6 and the X-axis moving assembly 7 are both linear modules, and the X-axis moving assembly 7 and the Z-axis moving assembly 6 are both two groups, namely the first X-axis moving assembly 71 and the second X-axis moving assembly 72, the first Z-axis moving assembly 61 and the second Z-axis moving assembly 62; the first Y-axis moving assembly 81, the second Y-axis moving assembly Component 82 is installed on the first moving table 711 of the first X-axis moving component 71, the third Y-axis moving component 83 and the fourth Y-axis moving component 84 are installed on the second moving table 712 of the first X-axis moving component 71, the first X-axis moving component 71 is installed on the first lifting table 611 of the first Z-axis moving component 61, the fifth Y-axis moving component 85 and the sixth Y-axis moving component 86 are respectively installed on the third moving table 721 and the fourth moving table 722 of the second X-axis moving component 72, and the second X-axis moving component 72 is installed on the second lifting table 621 of the second Z-axis moving component 62.

[0047] It can be understood that, with such a configuration, the Z-axis moving component 6, the X-axis moving component 7 and the Y-axis moving component 8 can drive the first clamp 31 and the second clamp 32 of the first unloading component 11, the second unloading component 12 and the third unloading component 21 to move in three-dimensional space, thereby stably cooperating with the winding needle 200 to complete the unloading operation of the dual battery cells.

[0048] In order to better control the first clamping needle 41 of the first blanking assembly 11, the second blanking assembly 12 and the third blanking assembly 21 to be inserted into the inner hole of the battery cell, in this embodiment, reference Figure 3 The Y-axis moving assembly 8 includes a Y-axis moving seat, and the first clamping jaw 31 and the second clamping jaw 32 of the first material unloading assembly 11, the second material unloading assembly 12 and the third material unloading assembly 21 are respectively installed on a corresponding Y-axis moving seat, and each Y-axis moving seat is connected to a Y-axis driving member 43, and the Y-axis driving member 43 drives the corresponding Y-axis moving seat to move in the Y-axis direction.

[0049] It should be further explained that the first clamping jaw 31 of the first blanking assembly 11 is mounted on the first Y-axis moving seat 811 of the first Y-axis moving assembly 81, the first clamping jaw 31 of the second blanking assembly 12 is mounted on the second Y-axis moving seat 821 of the second Y-axis moving assembly 82, the second clamping jaw 32 of the first blanking assembly 11 is mounted on the third Y-axis moving seat 831 of the third Y-axis moving assembly 83, the second clamping jaw 32 of the second blanking assembly 12 is mounted on the fourth Y-axis moving seat 841 of the fourth Y-axis moving assembly 84, and the first clamping jaw 31 of the third blanking assembly 21 is mounted on the second Y-axis moving seat 821 of the second Y-axis moving assembly 82. The clamping jaw 31 is mounted on the fifth Y-axis moving seat 851 of the fifth Y-axis moving assembly 85, and the second clamping jaw 32 of the third blanking assembly 21 is mounted on the sixth Y-axis moving seat 861 of the sixth Y-axis moving assembly 86; the first Y-axis guide rail 813 and the second Y-axis guide rail 823 are arranged on the first moving platform 711, and the third Y-axis guide rail 833 and the fourth Y-axis guide rail 843 are arranged on the second moving platform 712. The first Y-axis moving seat 811, the second Y-axis moving seat 821, the third Y-axis moving seat 831, and the fourth Y-axis moving seat 841 are respectively arranged on the first Y-axis guide rail 813 and the second Y-axis guide rail 823. On the first Y-axis guide rail 813, the second Y-axis guide rail 823, the third Y-axis guide rail 833, and the fourth Y-axis guide rail 843, the first Y-axis driving member 812 of the first Y-axis moving assembly 81, the second Y-axis driving member 822 of the second Y-axis moving assembly 82, the third Y-axis driving member 832 of the third Y-axis moving assembly 83, and the fourth Y-axis driving member 842 of the fourth Y-axis moving assembly 84 are all cylinders. The first Y-axis driving member 812 drives the first Y-axis moving seat 811 to move along the first Y-axis guide rail 813, and the second Y-axis driving member 822 drives the second Y-axis moving seat 821 to move along the The second Y-axis guide rail 823 moves, and the third Y-axis driving component 832 drives the third Y-axis moving seat 831 to move along the third Y-axis guide rail 833. The fourth Y-axis driving component 842 drives the fourth Y-axis moving seat 841 to move along the fourth Y-axis guide rail 843. The fifth Y-axis driving component 852 of the fifth Y-axis moving assembly 85 and the sixth Y-axis driving component 862 of the sixth Y-axis moving assembly 86 are both linear modules. The fifth Y-axis moving seat 851 and the sixth Y-axis moving seat 861 are respectively installed on the slides of the fifth Y-axis driving component 852 and the sixth Y-axis driving component 862.

[0050] When the battery cell is to be unloaded, the first X-axis moving component 71 will drive the first moving table 711 and the second moving table 712 to move toward each other, completing the movement of the first clamping needle 41 of the first unloading component 11 and the second unloading component 12 toward the winding needle groove 210; the second X-axis moving component 72 drives the third moving table 721 and the fourth moving table 722 to move toward each other, completing the movement of the first clamping needle 41 of the third unloading component 21 toward the winding needle groove 210, and then, driven by the first Y-axis driving component 812, the second Y-axis driving component 822, the third Y-axis driving component 832, the fourth Y-axis driving component 842, the fifth Y-axis driving component 852 and the sixth Y-axis driving component 862, the six first clamping needles 41 are respectively inserted into the inner battery cell 300 and the outer battery cell 400.

[0051] It can be understood that, with such a configuration, six groups of Y-axis moving components 8 are used to independently control the six clamps, so that the six clamps can move independently along the Y-axis direction, which can better control the six first clamping needles 41 to be stably inserted into the inner hole of the battery cell.

[0052] In order to quickly control the second clamping needle 42 to clamp the battery cell, in this embodiment, refer to Figure 3 The driving member 43 is a cylinder, and the driving member 43 drives the second clamping needle 42 to move along the X-axis direction.

[0053] It can be understood that, with such an arrangement, the first clamping needle 41 and the driving member 43 of the same clamping jaw are installed on the same Y-axis movable seat, the Y-axis driving member 43 drives the Y-axis movable seat to move along the Y-axis guide rail, and the first clamping needle 41 and the driving member 43 move together with the Y-axis movable seat.

[0054] The working principle of this embodiment is that after the inner and outer cells on the winding needle 200 are glued at the winding station 110 and transferred to the blanking station 120, first, the X-axis moving component 7 drives the first blanking component 11, the second blanking component 12 and the third blanking component 21 to move their respective first clamping claws 31 and second clamping claws 32 along the X-axis direction, so that the first blanking component 11, the second blanking component 12 and the third blanking component 21 are moved to the winding needle groove 210; then, the Y-axis moving component 8 drives the first blanking component 1 1. The first clamping jaw 31 and the second clamping jaw 32 of the second blanking assembly 12 and the third blanking assembly 21 move along the Y-axis direction, and the first clamping needle 41 and the second clamping needle 42 of the first blanking assembly 11 move toward the outside along the Y-axis, so that the first clamping needle 41 of the first blanking assembly 11 is inserted into the inner hole of the inner battery cell 300 from the side of the large plate 100, and the first clamping needle 41 and the second clamping needle 42 of the second blanking assembly 12 move toward the inside along the Y-axis, so that the first clamping needle 41 of the second blanking assembly 12 is inserted into the inner hole of the inner battery cell 300 from the side of the outer battery cell 400. In the process, the first clamping needle 41 and the second clamping needle 42 of the third blanking component 21 move inward along the Y-axis, so that the first clamping needle 41 of the third blanking component 21 is inserted into the inner hole of the outer battery cell 400 from the outside; then, the first clamping claw 31 and the second clamping claw 32 of the first blanking component 11 and the second blanking component 12 clamp the two sides of the inner battery cell 300 respectively, and the first clamping claw 31 and the second clamping claw 32 of the third blanking component 21 clamp the two sides of the outer battery cell 400 respectively; then, the X-axis moving component 7 drives the first blanking component 11 and the second blanking component 12 to move inward along the Y-axis, so that the first clamping needle 41 of the third blanking component 21 is inserted into the inner hole of the outer battery cell 400 from the outside; then, the first clamping claw 31 and the second clamping claw 32 of the first blanking component 11 and the second blanking component 12 respectively clamp the two sides of the inner battery cell 300 The first clamp 31 and the second clamp 32 of the material assembly 12 and the third material assembly 21 respectively move in opposite directions in the X-axis direction to open the inner hole of the battery cell, thereby facilitating the withdrawal of the winding needle 200 from the inner holes of the two inner and outer battery cells 400; finally, the Z-axis moving assembly 6 drives the first clamp 31 and the second clamp 32 of the first material assembly 11, the second material assembly 12 and the third material assembly 21 respectively to move in the Z-axis direction away from the material assembly station 120, and transports the inner and outer battery cells to the belt to complete the unloading of the dual battery cells.

[0055] In the embodiment of the present application, the inner battery cell 300 is clamped by the first blanking component 11 and the second blanking component 12, and the outer battery cell 400 is clamped by the third blanking component 21. Each group of blanking components has two pairs of clamping needles. The six pairs of clamping needles are used to clamp the inner and outer battery cells respectively, so as to ensure the stability of battery cell blanking and improve the quality of battery cells; the six sets of driving parts 43 are used to drive the six pairs of clamping needles to clamp the inner and outer battery cells together, so as to further improve the stability of battery cell blanking and ensure the quality of battery cells; the inner and outer battery cells are respectively spread apart by the inner and outer sets of X-axis moving components 7, so that the winding needle 200 has enough space to complete the needle withdrawal, so as to avoid the winding needle 200 pulling the battery cell and causing the battery cell to wrinkle, thereby improving the quality of the battery cell; the inner and outer battery cells are respectively transported to the belt by the inner and outer sets of Z-axis moving components 6, so as to achieve stable blanking of the inner and outer battery cells and improve the quality of the battery cells.

[0056] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A battery core blanking clamping needle mechanism, characterized in that: It includes an inner unloading device and an outer unloading device arranged at the unloading station of the winding machine, and the inner unloading device and the outer unloading device respectively unload the inner battery cells and the outer battery cells inside and outside the winding needle of the unloading station; The inner unloading device includes a first unloading component and a second unloading component, and the outer unloading device includes a third unloading component. The first unloading component, the second unloading component and the third unloading component are respectively arranged on the inner side, the middle side and the outer side of the length direction of the unloading station winding needle; when unloading double batteries, the first unloading component and the second unloading component cooperate to clamp the inner battery cell on the unloading station winding needle, and the third unloading component clamps the outer battery cell on the unloading station winding needle, and respectively transports the inner battery cell and the outer battery cell away from the winding needle that is performing the needle withdrawal action.

2. The battery core blanking needle clamping mechanism according to claim 1, characterized in that: The first, second and third blanking assemblies each include a first clamp and a second clamp symmetrically arranged on the left and right sides of the blanking station winding needle, the first clamp and the second clamp each include a first clamping needle, a second clamping needle and a driving member, the second clamping needle is installed at the driving end of the driving member, the driving member drives the second clamping needle to open and close relative to the first clamping needle, when blanking double cells, the first clamping needle is inserted into the cell along the blanking station winding needle, the second clamping needle moves to the outside of the cell, and the driving member drives the first clamping needle and the second clamping needle to clamp the cell.

3. The battery core blanking needle clamping mechanism according to claim 2, characterized in that: The first clamping needle has an arc guide surface and an arc support surface. The arc guide surface cooperates with the winding needle groove of the blanking station winding needle, and the arc support surface cooperates with the inner wall of the inner hole of the battery cell.

4. The battery core blanking needle clamping mechanism according to claim 2, characterized in that: The lengths of the first clamping needle and the second clamping needle of the first blanking component are both smaller than half the length of the battery cell, and the lengths of the first clamping needle and the second clamping needle of the second blanking component are both smaller than half the length of the battery cell.

5. The battery core blanking needle clamping mechanism according to claim 4, characterized in that: The length of the first clamping needle is the same as the length of the second clamping needle, and the length of the first clamping needle of the second blanking assembly is smaller than the distance between the inner battery cell and the outer battery cell.

6. The battery core blanking needle clamping mechanism according to claim 2, characterized in that: The lengths of the first clamping needle and the second clamping needle of the third blanking assembly are greater than the length of the battery cell.

7. The battery core blanking needle clamping mechanism according to claim 2, characterized in that: A soft rubber pad is provided at one end of the second clamping pin that contacts the battery core.

8. The battery core blanking needle clamping mechanism according to claim 2, characterized in that: The first, second and third blanking assemblies are all connected with a moving device, and the moving device includes a Z-axis moving assembly, an X-axis moving assembly and a Y-axis moving assembly which are sequentially connected in transmission. The first clamping jaw and the second clamping jaw of the first, second and third blanking assemblies are respectively connected with a group of Y-axis moving assemblies; the Z-axis moving assembly drives the first clamping jaw and the second clamping jaw of the first, second and third blanking assemblies to move along the Z-axis direction, the X-axis moving assembly drives the first clamping jaw and the second clamping jaw of the first, second and third blanking assemblies to move along the X-axis direction, and the Y-axis moving assembly drives the first clamping jaw and the second clamping jaw of the first, second and third blanking assemblies to move along the Y-axis direction.

9. The battery core blanking needle clamping mechanism according to claim 8, characterized in that: The Y-axis moving assembly includes a Y-axis moving seat, and the first clamping jaw and the second clamping jaw of the first blanking assembly, the second blanking assembly and the third blanking assembly are respectively installed on a corresponding Y-axis moving seat, and each Y-axis moving seat is connected to a Y-axis driving member, and the Y-axis driving member drives the corresponding Y-axis moving seat to move in the Y-axis direction.

10. The battery core blanking needle clamping mechanism according to claim 2, characterized in that: The driving member is a cylinder, and the driving member drives the second clamping needle to move along the X-axis direction.

Images