Cap welding detection mechanism and battery processing equipment

Abstract

The invention discloses a cover cap welding detection mechanism and battery processing equipment. The cover cap welding detection mechanism comprises a bracket; the collecting box is used for collecting caps of the NG products; the pressing assembly is used for pressing the tab of the electric core; the clamping jaw assembly is movably arranged on the support and used for clamping a cap; the driving structure is used for driving the clamping jaw assembly to move, a guide groove used for limiting the moving track of the clamping jaw assembly is formed in the support, the clamping jaw assembly is provided with a first matching part arranged in the guide groove in a sliding mode, and the guide groove is provided with a first section extending in the vertical direction and a second section connected to the upper end of the first section; the first section is used for driving the clamping jaw assembly to move in the vertical direction, and the second section is used for driving the clamping jaw assembly to convey the caps of the NG products into the collecting box; and the tension sensor is used for measuring the tension applied between the tab of the battery cell and the cap. The structure is beneficial to improving the response speed of the two actions of applying the pulling force and removing the cap, so that the processing efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of battery processing, and in particular relates to a cap welding detection mechanism and a battery processing device. BACKGROUND

[0002] With the rapid development of the lithium battery industry, the use of lithium batteries in life is also becoming more and more widespread. In order to meet market demand, the processing equipment of lithium batteries is also constantly improving and constantly refining and innovating. In the production process of cylindrical lithium batteries, the tab of the battery cell and the cap are connected together by welding. After the tab and the cap are welded, the tab is bent, and then the cap is pressed into the steel shell of the battery cell. Before the tab is bent, the tab and the cap need to be tested for tensile force to detect whether the connection strength between the tab and the cap meets the processing requirements. Specifically, one of the tab and the cap is fixed, and then a clamping jaw is used to apply a tensile force to the other one of the tab and the cap for tensile force testing.

[0003] In related technologies, for NG products (i.e. defective products) detected in the tensile force test, the cap needs to be removed from the conveying mechanism of the processing equipment and recycled. The two actions of applying a tensile force and removing the cap are often realized by different driving structures, resulting in a complex driving structure, which slows down the response speed of the two actions and affects the processing efficiency of the battery processing equipment. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application proposes a cap welding detection mechanism, which simplifies the related structure and is beneficial to improving the response speed of the two actions of applying a tensile force and removing the cap, thereby being beneficial to improving the processing efficiency of the battery processing equipment.

[0005] The present application also proposes a battery processing device having the above-mentioned cap welding detection mechanism.

[0006] According to the cap welding detection mechanism of the first aspect embodiment of the present application, the cap welding detection mechanism comprises:

[0007] a support;

[0008] a collection box for collecting the cap of the NG product;

[0009] a pressing assembly arranged on the support and used for pressing the tab of the battery cell;

[0010] a clamping jaw assembly movably arranged on the support and used for clamping the cap;

[0011] A driving structure is arranged on the bracket and used to drive the jaw assembly to move. The bracket is provided with a guide groove used to limit the moving track of the jaw assembly. The jaw assembly has a first matching part slidingly arranged in the guide groove. The guide groove has a first section extending along the vertical direction and a second section connected to the upper end of the first section. The first section is used to drive the jaw assembly to move along the vertical direction. The second section is used to drive the jaw assembly to deliver the cap of the NG product into the collecting box.

[0012] A tension sensor is arranged on the jaw assembly and used to measure the tension applied between the tab of the battery cell and the cap.

[0013] The cap welding detection mechanism has at least the following beneficial effects. During use, when the driving structure cooperates with the first section of the guide groove to drive the jaw assembly to move, the first matching part slides up and down in the first section of the guide groove, so as to drive the jaw assembly to move up and down. When the driving structure cooperates with the second section of the guide groove to drive the jaw assembly to move, the first matching part slides in the second section of the guide groove, so as to drive the jaw assembly to deliver the cap of the NG product into the collecting box. Specifically, during the tension test, the tab of the battery cell is first pressed by the pressing assembly. At this time, the main body of the battery cell and the tab of the battery cell are fixed. Then, the jaw assembly is driven to move downward by the driving structure cooperating with the first section of the guide groove to clamp the cap. Then, the jaw assembly is driven to move upward by the driving structure cooperating with the first section of the guide groove to apply tension. After the jaw assembly moves upward by a preset distance, the tension value is obtained by the tension sensor. If the obtained tension value reaches a preset value, the tension test is qualified. At this time, the pressing of the pressing assembly on the tab of the battery cell is released, and the clamping of the jaw assembly on the cap is released, so that the battery cell that has completed the tension test can be sent away to facilitate the tension test of the next battery cell. If the obtained tension value is less than the preset value, the connection between the tab of the battery cell and the cap is damaged, that is, the tension test is unqualified. At this time, the battery cell that has completed the tension test is determined as the NG product. Then, the driving structure continues to cooperate with the guide groove to drive the jaw assembly to move, until the jaw assembly delivers the cap of the NG product into the collecting box to complete the rejection of the cap. After the cap of the NG product is separated from the tab of the battery cell, the pressing of the pressing assembly on the tab of the battery cell can be released, so that the battery cell that has completed the tension test can be sent away to facilitate the tension test of the next battery cell. Compared with the case that the two actions of applying tension and rejecting the cap are respectively realized by different driving structures, the cap welding detection mechanism can realize the two actions of applying tension and rejecting the cap by the same driving structure, which simplifies the related structure and is conducive to improving the response speed of the two actions of applying tension and rejecting the cap, thereby being conducive to improving the processing efficiency of the battery processing equipment.

[0014] According to some embodiments of the present application, the second section extends in a horizontal direction, and the first section and the second section have an arc-shaped transition section therebetween.

[0015] According to some embodiments of the present application, the clamping jaw assembly comprises a mounting base, a support, and a clamping jaw. The mounting base is arranged on the support, and a first linear guide is arranged between the mounting base and the support. The support is arranged on the mounting base, and a second linear guide is arranged between the support and the mounting base. One of the first linear guide and the second linear guide is arranged in a vertical direction, and the other one of the first linear guide and the second linear guide extends in the extension direction of the second section. The side of the support is provided with a connecting portion extending towards the guide groove. The first matching portion is arranged at one end of the connecting portion away from the support. The output end of the driving structure is connected to the connecting portion or the support. The tension sensor is arranged between the support and the clamping jaw.

[0016] According to some embodiments of the present application, the support is provided with a sliding portion that can slide up and down. The tension sensor is connected between the sliding portion and the clamping jaw. A compression spring is arranged between the sliding portion and the support. The compression spring can be elastically deformed when the tension value measured by the tension sensor is greater than a preset value.

[0017] According to some embodiments of the present application, the cap welding detection mechanism further comprises an adjusting structure for adjusting the initial compression amount of the compression spring. The adjusting structure comprises a screw rod, an inner sleeve, and an outer sleeve. The screw rod is arranged in a vertical direction and movably penetrates the support. The lower end of the screw rod is fixedly connected to the sliding portion. The inner sleeve is fixedly arranged on the support and sleeved outside the screw rod. The outer sleeve is movably sleeved outside the inner sleeve and threadedly connected to the screw rod. The compression spring is sleeved outside the screw rod. One end of the compression spring acts on the inner sleeve or the support, and the other end of the compression spring acts on the outer sleeve.

[0018] According to some embodiments of the present application, the driving structure comprises a transmission portion, a driving motor, a screw rod assembly, and a first connecting rod. The transmission portion is movably arranged on the support in a vertical direction. The driving motor and the screw rod assembly are arranged on the support and used to drive the transmission portion to move up and down. One end of the first connecting rod is hingedly connected to the transmission portion, and the other end of the first connecting rod is hingedly connected to the connecting portion or the support.

[0019] According to some embodiments of the present application, two photoelectric switches are arranged on the support in a vertical direction, the photoelectric switches have a transmitter and a receiver arranged in a spaced manner, a baffle is arranged on the transmission part corresponding to the photoelectric switches, the baffle can be inserted between the transmitter and the receiver and block the light path between the transmitter and the receiver when the transmission part moves to a preset position, and the two photoelectric switches are used to position two limit positions of the first fitting part in the guide groove.

[0020] According to some embodiments of the present application, the pressing assembly comprises a first swing arm and a pressing part, a middle part of the first swing arm is rotatably connected to the support, the first swing arm is used to input power to swing the two ends of the first swing arm up and down, and the pressing part is directly or indirectly connected to one end of the first swing arm, and the pressing part is used to extend into the steel shell of the battery cell to press the tab of the battery cell.

[0021] According to some embodiments of the present application, the pressing assembly further comprises a buffer cylinder, a piston rod of the buffer cylinder is in an extended state and is hinged to one end of the first swing arm away from the pressing part, a cylinder barrel of the buffer cylinder is used to input power to drive the two ends of the first swing arm to swing up and down, and a pressure reducing valve or a pressure relief valve is arranged on the cylinder barrel of the buffer cylinder.

[0022] According to the second aspect of the embodiments of the present application, the battery processing equipment comprises:

[0023] A rack, wherein a cap welding detection mechanism according to the first aspect of the embodiments of the present application is arranged on the rack.

[0024] A conveying mechanism, wherein the conveying mechanism is arranged on the rack and is used to convey the battery cell to the cap welding detection mechanism.

[0025] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0026] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, including the appended drawings.

[0027] Figure 1 FIG. 1 is a structural schematic diagram of a cap welding detection mechanism according to an embodiment of the present application;

[0028] Figure 2 FIG. 2 is a structural schematic diagram of a cap welding detection mechanism according to another embodiment of the present application; Figure 1 FIG. 3 is a partial schematic diagram of the structure shown in FIG. 2;

[0029] Figure 3 FIG. 4 is a structural schematic diagram of a cap welding detection mechanism according to another embodiment of the present application; andFigure 2 A partial enlarged schematic diagram in the middle;

[0030] Figure 4 yes Figure 2 a schematic diagram of another perspective of the structure shown;

[0031] Figure 5 yes Figure 2 A schematic diagram of the structure shown from another perspective;

[0032] Figure 6 This is a schematic diagram of a partial structure of a cap welding detection mechanism according to an embodiment of the present application;

[0033] Figure 7 yes Figure 6 a schematic diagram of another perspective of the structure shown;

[0034] Figure 8 yes Figure 6 A schematic cross-sectional view of the structure shown;

[0035] Figure 9 This is another partial structural diagram of the cap welding detection mechanism in one embodiment of the present application.

[0036] Reference numerals:

[0037] Bracket 100, guide groove 110, first section 111, second section 112;

[0038] Collection box 200, guide slide 210;

[0039] Tension sensor 300;

[0040] Mounting base 410 , support 420 , clamping jaw 430 , first linear guide rail 440 , second linear guide rail 450 , connecting portion 460 , first matching portion 461 , sliding portion 470 , compression spring 480 ;

[0041] Screw 510, inner sleeve 520, first limiting step 521, outer sleeve 530, second limiting step 531, first abutting block 540, second abutting block 550, locking nut 560;

[0042] Transmission unit 610, drive motor 620, screw assembly 630, first connecting rod 640;

[0043] Photoelectric switch 710, baffle 720;

[0044] The first swing arm 810 , the pressing portion 820 , the mounting portion 830 , the buffer cylinder 840 , the second swing arm 850 , the second matching portion 851 , the second connecting rod 860 , the cam 870 , and the return spring 880 . DETAILED DESCRIPTION

[0045] The following describes in detail embodiments of the present application. Examples of the embodiments 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 only used to explain the present application and are not to be construed as limiting the present application.

[0046] In the description of this application, it should be understood that if orientation descriptions are involved, the orientations or positional relationships indicated, such as up, down, front, back, left, and right, are based on the orientations or positional relationships shown in the accompanying drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on this application.

[0047] In the description of this application, if the words "several", "greater than", "less than", "exceed", "above", "below", "within" etc. appear, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself.

[0048] In the description of this application, if words such as first and second appear, they are only used to distinguish technical features, and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0049] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0050] Reference Figures 1 to 9 According to an embodiment of the present application, the cap welding detection mechanism includes a bracket 100, a collection box 200, a pressing assembly, a clamping jaw assembly, a driving structure and a tension sensor 300.

[0051] Specifically, the collecting box 200 is used for collecting the cap of the NG product, the pressing assembly is arranged on the bracket 100 and is used for pressing the tab of the battery cell, the jaw assembly is movably arranged on the bracket 100 and is used for clamping the cap, the driving structure is arranged on the bracket 100 and is used for driving the jaw assembly to move, the bracket 100 is provided with a guide groove 110 for limiting the moving track of the jaw assembly, the jaw assembly has a first matching part 461 slidingly arranged in the guide groove 110, the guide groove 110 has a first section 111 extending along the vertical direction and a second section 112 connected to the upper end of the first section 111, the first section 111 of the guide groove 110 is used for driving the jaw assembly to move along the vertical direction, and the second section 112 of the guide groove 110 is used for driving the jaw assembly to deliver the cap of the NG product into the collecting box 200, and the tension sensor 300 is arranged on the jaw assembly and is used for measuring the tension applied between the tab of the battery cell and the cap.

[0052] In use, when the driving structure cooperates with the first section 111 of the guide groove 110 to drive the jaw assembly to move, the first matching part 461 slides up and down in the first section 111 of the guide groove 110, so as to drive the jaw assembly to move up and down, and when the driving structure cooperates with the second section 112 of the guide groove 110 to drive the jaw assembly to move, the first matching part 461 slides in the second section 112 of the guide groove 110, so as to drive the jaw assembly to deliver the cap of the NG product into the collecting box 200.

[0053] Specifically, when the tension test is performed, the tab of the battery cell is first pressed by the pressing assembly, at this time, the main body of the battery cell and the tab of the battery cell are fixed, then the clamping jaw assembly is driven to move downward by the driving structure cooperating with the first section 111 of the guide groove 110 to clamp the cover cap, and then the clamping jaw assembly is driven to move upward by the driving structure cooperating with the first section 111 of the guide groove 110 to apply tension, wherein the tension value is obtained by the tension sensor 300 after the clamping jaw assembly moves upward by a preset distance. If the obtained tension value reaches the preset value, the tension test is qualified, at this time, the pressing of the tab of the battery cell by the pressing assembly is released and the clamping of the cover cap by the clamping jaw assembly is released, so that the battery cell that has completed the tension test can be sent away to facilitate the tension test of the next battery cell; if the obtained tension value is less than the preset value, the connection between the tab of the battery cell and the cover cap is damaged, that is, the tension test is unqualified, at this time, the battery cell that has completed the tension test is determined as NG product, then the driving structure continues to cooperate with the guide groove 110 to drive the clamping jaw assembly to move, until the clamping jaw assembly delivers the cover cap of the NG product into the collection box 200 to complete the rejection of the cover cap, wherein when the cover cap of the NG product is separated from the tab of the battery cell, the pressing of the tab of the battery cell by the pressing assembly can be released, so that the battery cell that has completed the tension test can be sent away to facilitate the tension test of the next battery cell. Compared with the case that the two actions of applying tension and rejecting the cover cap are respectively realized by different driving structures, the cover cap welding detection mechanism of the embodiment of the application can realize the two actions of applying tension and rejecting the cover cap by the same driving structure, which simplifies the related structure and is conducive to improving the response speed of the two actions of applying tension and rejecting the cover cap, thereby being conducive to improving the processing efficiency of the battery processing equipment.

[0054] In addition, the tension value obtained by the tension sensor 300 can be uploaded to the system and bound with the corresponding battery cell production data, so that the battery cell production data can be traced back.

[0055] It should be noted that when the tension test is performed on the battery cell, the preset distance by which the clamping jaw assembly moves upward after clamping the cover cap can be controlled by the driving structure cooperating with the control device, or can be limited by the length of the first section 111 of the guide groove 110, which is not limited herein.

[0056] Specifically, the collection box 200 is arranged on the support 100, of course, the collection box 200 can also be arranged on the rack of the battery processing equipment, which is not limited herein.

[0057] Referring to Figure 1 , Figure 2 and Figure 4In some embodiments, the collecting box 200 has a guide chute 210 extending obliquely and towards the clamp assembly. When the pull test of the battery cell fails, the clamp assembly only needs to deliver the cap of the NG product to the entrance end of the guide chute 210, which is beneficial to shorten the moving path of the clamp assembly, thereby reducing the driving difficulty of the clamp assembly.

[0058] With reference to Figure 2 , Figure 3 and Figure 5 In some embodiments, the second section 112 of the guide groove 110 extends horizontally, i.e. the second section 112 of the guide groove 110 is horizontally shaped, and the first section 111 of the guide groove 110 and the second section 112 of the guide groove 110 have an arc-shaped transition section, and at this time the guide groove 110 is L-shaped. By setting the second section 112 of the guide groove 110 to be horizontally shaped, the horizontal displacement required for the clamp assembly to deliver the cap of the NG product to the target position can be designed as the length of the second section 112 of the guide groove 110, which is beneficial to reduce the design difficulty of the second section 112 of the guide groove 110.

[0059] It should be noted that in some other embodiments, the second section 112 of the guide groove 110 can also be arc-shaped or obliquely shaped, which is not limited herein.

[0060] With reference to Figures 2 to 4 and 6 to Figure 8 In some embodiments, the clamp assembly includes a mounting seat 410, a support 420, and a clamp 430 for clamping the cap, the mounting seat 410 is arranged on the bracket 100, a first linear guide rail 440 is arranged between the mounting seat 410 and the bracket 100, the support 420 is arranged on the mounting seat 410, a second linear guide rail 450 is arranged between the support 420 and the mounting seat 410, one of the first linear guide rail 440 and the second linear guide rail 450 is arranged in the vertical direction, the other of the first linear guide rail 440 and the second linear guide rail 450 extends in the extension direction of the second section 112 of the guide groove 110, the side of the support 420 is provided with a connecting portion 460 extending towards the guide groove 110, a first matching portion 461 is arranged at one end of the connecting portion 460 away from the support 420, the output end of the driving structure is connected to the connecting portion 460, and the pull sensor 300 is arranged between the support 420 and the clamp 430. By arranging the first linear guide rail 440 and the second linear guide rail 450, the clamp 430 always moves downward in the vertical direction, which is not only beneficial to reduce the operation difficulty, but also beneficial to reduce the debugging difficulty of the related structure.

[0061] It should be noted that in some other embodiments, the output end of the driving structure can also be connected to the support 420, which is not limited herein.

[0062] Specifically, the first fitting part 461 is a cam bearing.

[0063] Specifically, the clamping jaw 430 is a pneumatic jaw, a pneumatic finger or other automatic control clamping structure, which is not limited here.

[0064] Referring to Figures 2 to 4 and 6 to Figure 8 In some embodiments, a sliding part 470 is arranged on the support 420 and can slide up and down, the tension sensor 300 is connected between the sliding part 470 and the clamping jaw 430, a compression spring 480 is arranged between the sliding part 470 and the support 420, and the compression spring 480 can be elastically deformed when the tension value measured by the tension sensor 300 is greater than a preset value. When the tension value measured by the tension sensor 300 is greater than the preset value during the tension test of the battery cell, the compression spring 480 can be elastically deformed to absorb at least part of the tension, thereby facilitating the prevention of the qualified product from being damaged.

[0065] Specifically, the sliding part 470 and the support 420 are connected through a linear guide rail.

[0066] Referring to Figures 1 to 8 In some embodiments, the cap welding detection mechanism further comprises an adjusting structure for adjusting the initial compression amount of the compression spring 480, the adjusting structure comprising a screw rod 510, an inner sleeve 520 and an outer sleeve 530, the screw rod 510 being arranged vertically and movably penetrating the support 420, the lower end of the screw rod 510 being fixedly connected to the sliding part 470, the inner sleeve 520 being fixedly arranged on the support 420 and sleeved on the outside of the screw rod 510, the outer sleeve 530 being movably sleeved on the outside of the inner sleeve 520 and threadedly connected to the screw rod 510, the compression spring 480 being sleeved on the outside of the screw rod 510, one end of the compression spring 480 acting on the inner sleeve 520 or the support 420, and the other end of the compression spring 480 acting on the outer sleeve 530. Before the tension test of the battery cell, the outer sleeve 530 is twisted to compress the arranged compression spring 480, so that the compression spring 480 has an initial compression amount, and specifically, the compression spring 480 is adjusted to have an initial compression amount, and the size of the elastic force provided by the compression spring 480 after the adjustment is equal to the preset value of the tension value, so that the compression spring 480 will not be further compressed before the tension value measured by the tension sensor 300 is greater than the preset value, thereby effectively transmitting the tension. When the tension value measured by the tension sensor 300 is greater than the preset value, the compression spring 480 is further compressed to absorb at least part of the tension, thereby protecting the qualified product. The initial compression amount of the compression spring 480 can be adjusted to adapt to different detection requirements.

[0067] Specifically, the support 420 is provided with an avoiding through hole for penetrating the screw rod 510, the avoiding through hole is a threaded hole, the lower end of the inner sleeve 520 is threadedly connected to the avoiding through hole, of course, the inner sleeve 520 can also be integrally formed or welded on the support 420, and can also be fixed on the support 420 through a screw, which is not limited here.

[0068] With reference to Figure 8 In some embodiments, the inner sleeve 520 has a first limiting step 521, the inner sleeve 520 is provided with a first abutting block 540 abutting against the first limiting step 521, the outer sleeve 530 has a second limiting step 531, the outer sleeve 530 is provided with a second abutting block 550 abutting against the second limiting step 531, one end of the compression spring 480 abuts against the first abutting block 540, and the other end of the compression spring 480 abuts against the second abutting block 550.

[0069] It should be noted that in some other embodiments, one end of the compression spring 480 abuts against the first limiting step 521, and the other end of the compression spring 480 abuts against the second limiting step 531, at this time, the first abutting block 540 and the second abutting block 550 are not required.

[0070] With reference to Figures 1 to 8 In some embodiments, the screw rod 510 is threadedly connected with a locking nut 560 for preventing the outer sleeve 530 from loosening and retreating, thereby facilitating to improve the stability and reliability of the compression spring 480 during work.

[0071] It should be noted that in some other embodiments, the compression spring 480 can also be located below the sliding part 470 and act between the sliding part 470 and the support 420.

[0072] With reference to Figures 1 to 7 And Figure 9 In some embodiments, the driving structure includes a transmission part 610, a driving motor 620, a screw rod assembly 630 and a first connecting rod 640, the transmission part 610 is slidably arranged on the support 100, the driving motor 620 and the screw rod assembly 630 are arranged on the support 100 and used to drive the transmission part 610 to move up and down, one end of the first connecting rod 640 is hinged to the transmission part 610, and the other end of the first connecting rod 640 is hinged to the connecting part 460. In use, the transmission part 610 is driven to move up and down by the driving motor 620 and the screw rod assembly 630, and the first connecting rod 640 can drive the clamping jaw assembly to move along the movement track limited by the guide groove 110.

[0073] It should be noted that in some other embodiments, the end of the first connecting rod 640 away from the transmission part 610 can also be hinged to the support 420, which is not limited here.

[0074] Specifically, the transmission part 610 and the bracket 100 are slidably connected via a linear guide rail.

[0075] It should be noted that, in some other embodiments, the drive motor 620 and the screw assembly 630 may also be replaced by a cylinder, a linear motor or other drives that can drive the target component to move linearly back and forth, which is not limited here.

[0076] Reference Figure 4 and Figure 9 In some embodiments, two photoelectric switches 710 are vertically spaced apart on the support 420. The photoelectric switches 710 have a transmitter and a receiver spaced apart. A blocking piece 720 is provided on the transmission portion 610 corresponding to the photoelectric switches 710. The blocking piece 720 is capable of being inserted between the transmitter and the receiver when the transmission portion 610 moves to a preset position, thereby blocking the optical path between the transmitter and the receiver. The two photoelectric switches 710 are used to locate the two extreme positions of the first mating portion 461 within the guide slot 110. Driven by the drive mechanism, when the first mating portion 461 moves downward to the extreme position within the first section 111 of the guide slot 110, the blocking piece 720 is inserted between the transmitter and the receiver of the photoelectric switch 710 located below, triggering the photoelectric switch 710 and cooperating with the control device to shut down the drive mechanism, thereby preventing the first mating portion 461 from colliding with the inner wall of the guide slot 110. Driven by the driving structure, when the first matching portion 461 gradually moves away from the first section 111 of the guide groove 110 in the second section 112 of the guide groove 110 and moves to the extreme position, the baffle 720 is inserted between the transmitter and the receiver of the photoelectric switch 710 located above to trigger the photoelectric switch 710 and cooperate with the control device to close the driving structure, thereby preventing the first matching portion 461 from colliding with the inner wall of the guide groove 110.

[0077] It should be noted that, in some other embodiments, the driving structure for driving the movement of the clamping assembly may also be a cylinder. Specifically, the cylinder barrel of the cylinder is hinged to the bracket 100, and the piston rod of the cylinder is hinged to the clamping assembly.

[0078] Reference Figure 1 、 Figure 2 、 Figure 4 and Figure 5 In some embodiments, the pressing assembly includes a first swing arm 810 and a pressing portion 820. The middle portion of the first swing arm 810 is rotatably connected to the bracket 100. The first swing arm 810 is used to generate power to swing both ends of the first swing arm 810 up and down. The pressing portion 820 is directly or indirectly connected to one end of the first swing arm 810 and is used to extend into the steel casing of the battery cell and press against the battery cell tab. During use, the pressing assembly only requires inputting power in the vertical direction to the first swing arm 810. The structure is simple and easy to implement.

[0079] Specifically, the support 100 is provided with first swing arms 810 on opposite sides, the two first swing arms 810 are connected through a rotating shaft, and the two first swing arms 810 are used to drive the installation part 830 connected between one end of the pressing part 820, and the pressing part 820 is fixedly arranged on the installation part 830.

[0080] With reference to Figure 1 , Figure 2 , Figure 4 and Figure 5 , in some embodiments, the pressing assembly further comprises a buffer cylinder 840, a piston rod of the buffer cylinder 840 is in an extended state and is hinged to one end of the first swing arm 810 away from the pressing part 820, a cylinder barrel of the buffer cylinder 840 is used to input power to drive the two ends of the first swing arm 810 to swing up and down, and a pressure reducing valve or a pressure relief valve is arranged on the cylinder barrel of the buffer cylinder 840. When the pressing part 820 extends into the steel shell of the battery cell to press the tab of the battery cell, the buffer cylinder 840 will be pressed under the action of the input power, and when the pressure received by the buffer cylinder 840 is greater than a preset value, the pressure is released through the pressure reducing valve or the pressure relief valve, so that the piston rod of the buffer cylinder 840 can be pressed back into the cylinder barrel of the buffer cylinder 840, thereby providing a buffer force, and further facilitating the prevention of the battery cell from being damaged.

[0081] With reference to Figure 1 , Figure 2 , Figure 4 and Figure 5 , in some embodiments, the pressing assembly further comprises a second swing arm 850 and a second connecting rod 860, the second swing arm 850 is used to input power and swing up and down, a lower end of the second connecting rod 860 is hinged to the second swing arm 850, an upper end of the second connecting rod 860 is connected to the cylinder barrel of the buffer cylinder 840, and the second connecting rod 860 can act on the buffer cylinder 840 and drive the two ends of the first swing arm 810 to swing up and down under the drive of the second swing arm 850. By arranging the second swing arm 850 and the second connecting rod 860, the power source for inputting power does not need to be integrated on the support 100, which is conducive to optimizing the layout of various components on the support 100.

[0082] With reference to Figure 1In some embodiments, the pressing assembly further comprises a cam 870 and a return spring 880, the second swing arm 850 is rotatably arranged on the frame of the battery processing equipment at one end away from the second connecting rod 860, the second swing arm 850 is provided with a second matching part 851 matched with the cam 870 for transmission, the upper end of the return spring 880 is connected to the second swing arm 850 at one end close to the second connecting rod 860, and the lower end of the return spring 880 is connected to the frame of the battery processing equipment. The return spring 880 is used to drive the second swing arm 850 to swing downward, so as to drive the second connecting rod 860 to swing the first swing arm 810, thereby driving the pressing part 820 to release the pressing on the tab of the battery cell. The cam 870 is used to drive the second swing arm 850 to swing upward under the drive of the motor, so as to drive the second connecting rod 860 to swing the first swing arm 810, thereby driving the pressing part 820 to extend into the steel shell of the battery cell to press the tab of the battery cell. At this time, the motor only needs to drive the cam 870 to rotate in the same direction through the rotating shaft, that is, the motor does not need to be reversed, which is easy to control.

[0083] Specifically, the second matching part 851 is a cam bearing.

[0084] It should be noted that in some other embodiments, the lower end of the return spring 880 can be connected to the second swing arm 850 at one end close to the second connecting rod 860, and correspondingly, the upper end of the return spring 880 is connected to the frame of the battery processing equipment. At this time, the return spring 880 is used to drive the second swing arm 850 to swing upward, and the cam 870 is used to drive the second swing arm 850 to swing downward under the drive of the motor.

[0085] It should be noted that in some other embodiments, the second swing arm 850 can be directly driven to swing up and down by the motor through a transmission shaft. At this time, the above-mentioned cam 870 and return spring 880 are not needed, and the motor needs to be continuously forward and reverse rotated at this time.

[0086] It should be noted that in some other embodiments, the first swing arm 810 can also be directly driven to swing up and down by a cylinder, a hydraulic cylinder, a linear motor or other drivers capable of driving target components to move linearly and reciprocally, which is directly acting on the buffer cylinder 840. At this time, the above-mentioned second swing arm 850, second connecting rod 860, cam 870 and return spring 880 are not needed.

[0087] According to the battery processing equipment of the embodiments of the present application, the battery processing equipment comprises a frame and a conveying mechanism.

[0088] Specifically, the frame is provided with a cap welding detection station, the cap welding detection station is provided with the above-mentioned cap welding detection mechanism, and the conveying mechanism is arranged on the frame and is used to convey the battery cell to the cap welding detection station.

[0089] It should be noted that, since the battery processing equipment of the embodiments of the present application comprises the cap welding detection mechanism described above, the battery processing equipment of the embodiments of the present application comprises all the technical effects of the cap welding detection mechanism described above.

[0090] In the description of the present specification, if the description involves the description of the terms such as "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", and "some examples", it means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0091] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A cap welding detection mechanism, characterized in that: include: Bracket; Collection box, used to collect the caps of NG products; A pressing assembly, disposed on the bracket and used to press the tab of the battery cell; a clamping claw assembly, movably disposed on the bracket and used for clamping the cap; a driving structure, disposed on the bracket and used to drive the clamping assembly to move, the bracket being provided with a guide groove for limiting the movement trajectory of the clamping assembly, the clamping assembly having a first mating portion slidably disposed in the guide groove, the guide groove having a first section extending in a vertical direction and a second section connected to an upper end of the first section, the first section being used to drive the clamping assembly to move in a vertical direction, and the second section being used to drive the clamping assembly to transport the caps of NG products into the collection box; The tension sensor is arranged on the clamping jaw assembly and is used to measure the tension applied between the tab and the cap of the battery cell.

2. The cap welding detection mechanism according to claim 1, characterized in that: The second section extends in a horizontal direction, and an arc-shaped transition section is provided between the first section and the second section.

3. The cap welding detection mechanism according to claim 2, characterized in that: The clamping jaw assembly includes a mounting seat, a support and a clamping jaw, the mounting seat is arranged on the bracket, a first linear guide is arranged between the mounting seat and the bracket, the support is arranged on the mounting seat, a second linear guide is arranged between the support and the mounting seat, one of the first linear guide and the second linear guide is arranged in a vertical direction, and the other of the first linear guide and the second linear guide extends along the extension direction of the second section, a connecting portion extending toward the guide groove is provided on the side of the support, the first matching portion is provided at an end of the connecting portion away from the support, the output end of the driving structure is connected to the connecting portion or the support, and the tension sensor is provided between the support and the clamping jaw.

4. The cap welding detection mechanism according to claim 3, characterized in that: The support is provided with a sliding portion that can slide up and down, the tension sensor is connected between the sliding portion and the clamping claw, and a compression spring is provided between the sliding portion and the support. The compression spring can undergo elastic deformation when the tension value measured by the tension sensor is greater than a preset value.

5. The cap welding detection mechanism according to claim 4, characterized in that: The cap welding detection mechanism also includes an adjustment structure for adjusting the initial compression amount of the compression spring, the adjustment structure includes a screw, an inner sleeve and an outer sleeve, the screw is arranged in a vertical direction and movably penetrates the support, the lower end of the screw is fixedly connected to the sliding part, the inner sleeve is fixedly arranged on the support and sleeved on the outside of the screw, the outer sleeve is movably sleeved on the outside of the inner sleeve and threadedly connected to the screw, the compression spring is sleeved on the outside of the screw, one end of the compression spring acts on the inner sleeve or the support, and the other end of the compression spring acts on the outer sleeve.

6. The cap welding detection mechanism according to claim 3, characterized in that: The driving structure includes a transmission part, a driving motor, a screw assembly and a first connecting rod. The transmission part can be slidably arranged on the bracket up and down. The driving motor and the screw assembly are arranged on the bracket and are used to drive the transmission part to move up and down. One end of the first connecting rod is hinged to the transmission part, and the other end of the first connecting rod is hinged to the connecting part or the support.

7. The cap welding detection mechanism according to claim 6, characterized in that: Two photoelectric switches are arranged on the support at intervals in the vertical direction, and the photoelectric switches have a transmitter and a receiver arranged at intervals. A baffle is provided on the transmission part corresponding to the photoelectric switch, and the baffle can be inserted between the transmitter and the receiver when the transmission part moves to a preset position and block the light path between the transmitter and the receiver. The two photoelectric switches are used to locate the two extreme positions of the first mating part in the guide groove.

8. The cap welding detection mechanism according to claim 1, wherein: The pressing assembly includes a first swing arm and a pressing part. The middle part of the first swing arm is rotatably connected to the bracket. The first swing arm is used to input power to make the two ends of the first swing arm swing up and down. The pressing part is directly or indirectly connected to one end of the first swing arm. The pressing part is used to extend into the steel shell of the battery cell to press the battery cell's tab.

9. The cap welding detection mechanism according to claim 8, characterized in that: The pressure assembly also includes a buffer cylinder, the piston rod of the buffer cylinder is in an extended state and is hinged to the end of the first swing arm away from the pressure part, the cylinder barrel of the buffer cylinder is used to input power to drive the two ends of the first swing arm to swing up and down, and a pressure reducing valve or a pressure relief valve is provided on the cylinder barrel of the buffer cylinder.

10. A battery processing device, characterized in that: include: A frame, wherein a cap welding detection station is provided on the frame, and the cap welding detection station is provided with the cap welding detection mechanism according to any one of claims 1 to 9; A conveying mechanism is provided on the frame and is used to convey the battery cells to the cap welding inspection station.

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