Short circuit testing mechanism and battery cell manufacturing equipment

Abstract

The utility model provides a short circuit test mechanism and battery cell manufacturing equipment, the battery cell manufacturing equipment comprises the short circuit test mechanism, the short circuit test mechanism comprises a support plate, a driving mechanism and at least two test units, the driving mechanism is mounted on the support plate, and the test units are connected with the output end of the driving mechanism; the test units are arranged at intervals to define a conveying space for conveying the battery cells, and the supporting plate and the driving mechanism avoid the conveying space; the two oppositely arranged test units can be driven by the driving mechanism to get close to each other so as to clamp the two opposite ends of the battery cell and carry out short circuit test on the battery cell; and the two oppositely arranged test units can be driven by the driving mechanism to be far away from each other so as to loosen the battery cell. Through the structural design and position layout of the supporting plate, the driving mechanism and the testing unit, short-circuit testing can be performed on the battery cell in a battery cell conveying path, so that the testing efficiency of the battery cell is improved, and the high-speed production requirement of the battery cell is met.

Description

Technical Field

[0001] This application belongs to the technical field of battery cell manufacturing, and more specifically, relates to a short-circuit test mechanism and a battery cell manufacturing device. Background Art

[0002] During or after the manufacturing process of a battery cell, it is necessary to perform a short-circuit test on the battery cell to screen out battery cells with qualified resistance. During the battery cell testing process, it is necessary to support and position the battery cell through a jig, and then perform a short-circuit test on the battery cell through a test unit, which results in low testing efficiency of the battery cell and is difficult to meet the high-speed production requirements of the battery cell. Summary of the Utility Model

[0003] The purpose of the embodiments of this application is to provide a short-circuit test mechanism and a battery cell manufacturing device to solve the technical problem of low short-circuit test efficiency of battery cells existing in the prior art.

[0004] To achieve the above purpose, the technical solution adopted in this application is: to provide a short-circuit test mechanism, including a support plate, a driving mechanism, and at least two test units. The driving mechanism is installed on the support plate, and the test unit is connected to the output end of the driving mechanism; the test units are spaced apart to enclose a conveying space for the battery cell to be conveyed, and the support plate and the driving mechanism avoid the conveying space; two relatively arranged test units can approach each other under the drive of the driving mechanism to clamp the opposite ends of the battery cell and perform a short-circuit test on the battery cell; two relatively arranged test units can move away from each other under the drive of the driving mechanism to release the battery cell.

[0005] In one embodiment, the short-circuit test mechanism includes two rows of relatively arranged test units. The test units in the same row are installed on the same mounting plate, and the mounting plate is connected to the output end of the driving mechanism.

[0006] In one embodiment, the driving mechanism and the test unit are respectively installed on opposite sides of the support plate in a first direction; wherein, the first direction is perpendicular to the distribution direction of the two rows of test units, and the first direction is perpendicular to the distribution direction of each test unit in each row of test units.

[0007] In one embodiment, along the sliding direction of the test unit, the output end of the driving mechanism and the mounting position of the test unit are adjustable.

[0008] In one embodiment, the test unit and / or the output end of the driving mechanism are provided with adjustment holes, the adjustment holes extend along the sliding direction of the test unit, and the test unit can be locked to the output end of the driving mechanism through different positions of the adjustment holes.

[0009] In one embodiment, the test unit includes a test piece, the test piece includes an axial test surface and a circumferential test surface extending from the periphery of the axial test surface, and the axial test surface and the circumferential test surface are respectively used to fit with the axial end surface and the outer peripheral surface of the tab of the battery cell.

[0010] In one embodiment, the circumferential test surface is a conical surface, and the inner diameter of the circumferential test surface gradually increases in a direction away from the axial test surface.

[0011] In one embodiment, the test unit further includes an insulating cover, and the insulating cover covers the outside of the test piece.

[0012] In one embodiment, the test unit includes a test piece, a test seat and an elastic member. The elastic member is abutted between the test piece and the test seat. The test seat is connected to the output end of the driving mechanism, and the test piece is used to press the battery cell to perform a short-circuit test on the battery cell.

[0013] In one embodiment, the test unit further includes a guide rod and a linear bearing. The linear bearing is installed on the test seat. The guide rod penetrates through the linear bearing. One end of the guide rod is connected to the test piece, and the other end of the guide rod is arranged in the test seat. The elastic member is abutted between the test seat and the guide rod.

[0014] On the other hand, the present application also provides a battery cell manufacturing device, including the above short-circuit test mechanism.

[0015] The beneficial effects of the short-circuit test mechanism and the battery cell manufacturing device provided by the present application are as follows: The test units are arranged at intervals to enclose a conveying space for conveying the battery cell, and the support plate and the driving mechanism both avoid the conveying space, so that the battery cell can be conveyed through the conveying space, that is, the battery cell can be subjected to a short-circuit test during the conveying process of the battery cell, without additionally setting a jig to clamp the battery cell, simplifying the clamping process of the battery cell test, improving the test efficiency of the battery cell, and enabling the test efficiency of the battery cell to meet the high-efficiency production requirements of the battery cell. In addition, by arranging at least two test units, multiple battery cells can be subjected to short-circuit tests simultaneously, thereby improving the test efficiency of the battery cells. Description of the Drawings

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0017] Figure 1 Schematic perspective view of the battery cell manufacturing equipment provided by an embodiment of the present application;

[0018] Figure 2 Schematic perspective view of the short - circuit test mechanism provided by an embodiment of the present application;

[0019] Figure 3 Schematic side view of the short - circuit test mechanism provided by an embodiment of the present application after removing the connection bracket;

[0020] Figure 4 Schematic top view of the short - circuit test mechanism provided by an embodiment of the present application after removing the connection bracket;

[0021] Figure 5 Schematic perspective view of the test unit in the short - circuit test mechanism provided by an embodiment of the present application;

[0022] Figure 6 Schematic sectional view of the test unit in the short - circuit test mechanism provided by an embodiment of the present application;

[0023] Figure 7 Schematic perspective view of the test piece in the short - circuit test mechanism provided by an embodiment of the present application;

[0024] Figure 8 Schematic view of the battery cell to be tested by the short - circuit test mechanism provided by an embodiment of the present application.

[0025] Among them, the reference numerals in the figure:

[0026] 1000, short - circuit test mechanism; 100, support plate; 110, through - slot; 200, driving mechanism; 300, test unit; 310, test piece; 311, axial test surface; 312, circumferential test surface; 313, receiving groove; 320, insulating cover; 321, accommodating groove; 322, avoiding groove; 330, test seat; 331, locking hole; 340, elastic member; 350, guide rod; 360, linear bearing; 370, conductive member; 380, limiting sleeve; 400, conveying space; 500, mounting plate; 510, adjusting hole; 600, connecting member; 700, guiding assembly; 710, guide rail; 720, slider; 800, connection bracket; 2000, battery cell; 2100, tab; 3000, conveying device; X, first direction; Y, second direction; Z, third direction. Detailed implementation manners

[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0028] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0029] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0030] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0031] Please refer to Figures 1 to 4 , and now the short - circuit test mechanism 1000 provided by the embodiment of the present application will be described. The short - circuit test mechanism 1000 is used to perform a short - circuit test on the battery cell 2000. Specifically, the opposite ends of the battery cell 2000 respectively have tabs 2100, and the short - circuit test mechanism 1000 is used to form electrical connections with the tabs 2100 at both ends of the battery cell 2000 respectively to perform a short - circuit test on the battery cell 2000.

[0032] The short - circuit test mechanism 1000 includes a support plate 100, a driving mechanism 200, and at least two test units 300. The driving mechanism 200 is installed on the support plate 100, and the test units 300 are connected to the output end of the driving mechanism 200; the test units 300 are spaced apart to enclose a conveying space 400 for conveying the battery cell 2000, and the support plate 100 and the driving mechanism 200 avoid the conveying space 400; two relatively - arranged test units 300 can approach each other under the drive of the driving mechanism 200 to clamp the opposite ends of the battery cell 2000 and perform a short - circuit test on the battery cell 2000; two relatively - arranged test units 300 can move away from each other under the drive of the driving mechanism 200 to release the battery cell 2000.

[0033] Among them, the number of the test units 300 can be two or more than two. Every two test units 300 form a test group, and the two test units 300 in the test group are arranged at a relative interval. The driving mechanism 200 is used to drive the two test units 300 in the test group to approach or move away from each other, so as to realize the test and release of the battery cell 2000. When the number of the test groups is two or more than two, short-circuit tests can be carried out on two or more battery cells 2000 simultaneously.

[0034] The test units 300 are arranged at intervals to enclose a conveying space 400 for conveying the battery cell 2000, that is, the battery cell 2000 can be conveyed between the test units 300. Specifically, the conveying device 3000 penetrates through the conveying space 400 to convey the battery cell 2000, so that the battery cell 2000 can be tested during the transportation process of the battery cell 2000. At this time, the conveying device 3000 for conveying the battery cell 2000 is the clamping fixture for the battery cell 2000, and there is no need to specially clamp the battery cell 2000 for the test of the battery cell 2000.

[0035] In the short-circuit test mechanism 1000 in the embodiment of the present application, the test units 300 are arranged at intervals to enclose a conveying space 400 for conveying the battery cell 2000, and both the support plate 100 and the driving mechanism 200 avoid the conveying space 400, so that the battery cell 2000 can be conveyed through the conveying space 400, that is, short-circuit tests can be carried out on the battery cell 2000 during the conveying process of the battery cell 2000, without additionally setting a fixture to clamp the battery cell 2000, simplifying the clamping process of the test of the battery cell 2000, improving the test efficiency of the battery cell 2000, and enabling the test efficiency of the battery cell 2000 to meet the high-efficiency production requirements of the battery cell 2000. In addition, through the setting of at least two test units 300, short-circuit tests can be carried out on multiple battery cells 2000 simultaneously, thereby improving the test efficiency of the battery cell 2000.

[0036] In one embodiment, please refer to Figure 2 , the short-circuit test mechanism 1000 includes two rows of test units 300 arranged oppositely. The test units 300 in the same row are installed on the same mounting plate 500, and the mounting plate 500 is connected to the output end of the driving mechanism 200.

[0037] During assembly, the distribution direction of the two rows of test units 300 is set to be parallel to the axial direction of the battery cell 2000, and the distribution direction of each test unit 300 in each row of test units 300 is set to be parallel to the conveying direction of the battery cell 2000, so that the battery cell 2000 is conveyed between the two rows of test units 300, and at least two battery cells 2000 during the conveying process can be simultaneously subjected to short-circuit tests each time.

[0038] In this embodiment, by installing the same-row test units 300 on the same mounting plate 500, when the driving mechanism 200 drives the mounting plate 500 to slide, a row of test units 300 can be synchronously driven to slide. When the driving mechanism 200 drives the two mounting plates 500 to approach each other, two rows of test units 300 can be driven to approach each other, thereby realizing the short-circuit test of a row of battery cells 2000, and further improving the test efficiency of the battery cells 2000.

[0039] In one embodiment, please refer to Figures 2 to 4 , two driving mechanisms 200 are provided on the support plate 100, and the two driving mechanisms 200 are respectively connected to two relatively arranged test units 300, so that the two test units 300 can be driven to approach or move away from each other by the two driving mechanisms 200 respectively. It can be understood that in other embodiments of the present application, one driving mechanism 200 can also be used to drive the two test units 300 to approach or move away from each other respectively. At this time, one driving member can drive the two test units 300 to approach or move away from each other through two transmission mechanisms.

[0040] In one embodiment, please refer to Figures 2 to 4 , two driving mechanisms 200 are provided on the support plate 100, and the two driving mechanisms 200 are respectively connected to two mounting plates 500. The two driving mechanisms 200 drive two rows of test units 300 to approach or move away from each other through the two mounting plates 500 respectively, so that the synchronous test of multiple battery cells 2000 can be realized by the two driving mechanisms 200. It can be understood that in other embodiments of the present application, multiple driving mechanisms 200 can also be provided, and one driving mechanism 200 is provided corresponding to each test unit 300 or every two test units 300, and the driving mechanisms 200 work synchronously to drive the test units 300 to move synchronously.

[0041] In one embodiment, please refer to Figure 2 and Figure 3 , the driving mechanism 200 and the test unit 300 are respectively installed on opposite sides of the support plate 100 along the first direction X; wherein, the first direction X is perpendicular to the distribution direction of the two rows of test units 300, and the first direction X is perpendicular to the distribution direction of each test unit 300 in each row of test units 300.

[0042] Specifically, it is assumed that the two rows of test units 300 are spaced apart along the second direction Y, and each test unit 300 in each row of test units 300 is sequentially spaced apart along the third direction Z. Then the first direction X is perpendicular to the second direction Y, and the first direction X is perpendicular to the third direction Z. When the battery cells 2000 are transported in the transport space 400, the axial direction of the battery cells 2000 is parallel to the second direction Y, and the transport direction of the battery cells 2000 is the third direction Z.

[0043] In this embodiment, by distributing the driving mechanism 200 and the testing unit 300 on opposite sides of the support plate 100 along the first direction X, and the first direction X is perpendicular to the axial direction and the conveying direction of the battery cell 2000 respectively, the conveying of the battery cell 2000 does not pass through the support plate 100, so that the support plate 100 and the driving mechanism 200 can be far away from the conveying space 400, and the battery cell 2000 can be subjected to a short-circuit test during the conveying process. It can be understood that in other embodiments of the present application, the support plate 100 can also be set to be perpendicular to the conveying direction of the battery cell 2000. At this time, a groove can be dug at the position of the support plate 100 corresponding to the conveying space 400 to avoid the conveying space 400, and this is not limited to a single case.

[0044] In one embodiment, please refer to Figure 2 and Figure 3 , the short-circuit testing mechanism 1000 further includes a connecting member 600. A through groove 110 is formed on the support plate 100. The connecting member 600 is disposed through the through groove 110. Opposite ends of the connecting member 600 are respectively connected to the output end of the driving mechanism 200 and the testing unit 300, so as to connect the output end of the driving mechanism 200 and the testing unit 300.

[0045] Specifically, please refer to Figure 1 , the through groove 110 extends along the second direction Y, so that when the testing unit 300 slides along the second direction Y, the connecting member 600 can slide in the through groove 110.

[0046] In one embodiment, please refer to Figure 1 and Figure 2 , a guiding assembly 700 is provided between the support plate 100 and the testing unit 300. The sliding of the testing unit 300 is guided by the guiding assembly 700 to ensure the sliding accuracy of the testing unit 300.

[0047] In one embodiment, please refer to Figure 3 , the guiding assembly 700 includes a guide rail 710 and a slider 720. The guide rail 710 is installed on the side of the support plate 100 facing away from the driving mechanism 200, and the guide rail 710 extends along the second direction Y. The slider 720 is slidably disposed on the guide rail 710, and the testing unit 300 is connected to the slider 720. When the driving mechanism 200 drives the testing unit 300 to slide, the slider 720 slides on the guide rail 710, so as to guide the sliding of the testing unit 300.

[0048] Specifically, the slider 720 is connected to the mounting plate 500, and the connecting member 600 is connected to the mounting plate 500. When the driving mechanism 200 drives the mounting plate 500 and the testing unit 300 to slide through the connecting member 600, the slider 720 slides on the guide rail 710, so as to guide the sliding of the testing unit 300.

[0049] Optionally, the driving mechanism 200 is a linear cylinder. Understandably, in other embodiments, the driving mechanism 200 can also be a linear motor.

[0050] In one embodiment, please refer to Figure 4 , in the sliding direction of the test unit 300, the output end of the driving mechanism 200 is adjustable in the installation position of the test unit 300.

[0051] Among them, the sliding direction of the test unit 300 is the direction in which the test units 300 approach or move away from each other, that is, the axial direction of the battery cell 2000.

[0052] In addition, the test unit 300 can be directly connected to the output end of the driving mechanism 200, or can be indirectly connected to the output end of the driving mechanism 200 through other structures (such as the connecting member 600 and the mounting plate 500). Therefore, the installation position of the output end of the driving mechanism 200 and the test unit 300 is adjustable, which can be that the installation position of the output end of the driving mechanism 200 and the test unit 300 is adjustable, or the installation position of the mounting plate 500 and the test unit 300 is adjustable.

[0053] When the installation position of the output end of the driving mechanism 200 and the test unit 300 is adjustable, the initial spacing distance between two relatively arranged test units 300 is adjustable, so that it can be used to clamp battery cells 2000 of different lengths to perform short-circuit tests on battery cells 2000 of different lengths, increasing the application range of the short-circuit test mechanism 1000.

[0054] In one embodiment, the test unit 300 and / or the output end of the driving mechanism 200 are provided with adjustment holes 510, and the adjustment holes 510 extend along the sliding direction of the test unit 300. The test unit 300 can be locked to the output end of the driving mechanism 200 through different positions of the adjustment holes 510. Among them, the test unit 300 is locked to the output end of the driving mechanism 200 through different positions of the adjustment holes 510, so that the position of the test unit 300 on the output end of the driving mechanism 200 can be adjusted to adjust the initial spacing distance between two relatively arranged test units 300.

[0055] In a specific embodiment, please refer to Figure 4, the output end of the driving mechanism 200 is connected to the mounting plate 500 through a connecting member 600, and the mounting plate 500 is connected to the testing unit 300. A locking hole 331 is provided on the testing unit 300, and an adjusting hole 510 is formed on the mounting plate 500. The adjusting hole 510 extends along the sliding direction of the testing unit 300. During assembly, fasteners are sequentially passed through different positions of the locking hole 331 and the adjusting hole 510, so as to lock the testing unit 300 at different positions on the mounting plate 500. It can be understood that in other embodiments of the present application, the adjusting hole 510 may also be formed on the testing unit 300, the locking hole 331 may be formed on the mounting plate 500, or adjusting holes 510 may be formed on both the testing unit 300 and the mounting plate 500, and there is no unique limitation here.

[0056] Optionally, please refer to Figure 4 , two rows of adjusting holes 510 are formed on the mounting plate 500, and two rows of locking holes 331 are provided on the testing unit 300. Each row of locking holes 331 includes a plurality of locking holes 331 that are sequentially spaced along the sliding direction of the testing unit 300, and each locking hole 331 is respectively locked at different positions of the adjusting hole 510. In this embodiment, by providing two rows of adjusting holes 510, the connection reliability between the testing unit 300 and the mounting plate 500 can be improved. Each row of locking holes 331 includes a plurality of locking holes 331, which can also improve the connection reliability between the testing unit 300 and the mounting plate 500.

[0057] In one embodiment, please refer to Figures 5 to 7 , the testing unit 300 includes a test piece 310. The test piece 310 includes an axial test surface 311 and a circumferential test surface 312 extending from the periphery of the axial test surface 311. The axial test surface 311 and the circumferential test surface 312 are respectively used to fit against the axial end surface and the outer peripheral surface of the tab 2100 of the battery cell 2000.

[0058] Specifically, the axial test surface 311 is a surface perpendicular to the axis of the battery cell 2000.

[0059] Please refer to Figure 8 , which is the structure of the battery cell 2000 after winding and before casing, that is, a bare core. The opposite ends of the battery cell 2000 have tabs 2100 distributed circumferentially. During testing, the driving mechanism 200 drives two test pieces 310 to approach each other, so that the two axial test surfaces 311 approach each other to respectively abut against the axial end surfaces of the tabs 2100 at both ends, and the circumferential test surface 312 is in contact with the outer peripheral surface of each tab 2100, thereby increasing the contact area between the test piece 310 and the tab 2100, and further enabling more accurate testing of whether the battery cell 2000 is qualified.

[0060] In one embodiment, please refer to Figure 6 andFigure 7 The circumferential test surface 312 is a conical surface, and the inner diameter of the circumferential test surface 312 gradually increases in the direction away from the axial test surface 311. When the test piece 310 approaches the battery cell 2000, the position with a larger diameter of the circumferential test surface 312 contacts the tab 2100 first. When the test piece 310 gets closer to the battery cell 2000, the diameter of the contact position between the circumferential test surface 312 and the tab 2100 becomes smaller, so that the tabs 2100 can be radially converged, and the tabs 2100 are elastically attached to the circumferential test surface 312, thereby further increasing the contact area between the test piece 310 and the tab 2100. It can be understood that in other embodiments of the present application, the above circumferential test surface 312 can also be a cylindrical surface, which is not limited uniquely here.

[0061] In one embodiment, please refer to Figure 5 and Figure 6 The test unit 300 further includes an insulating cover 320. The insulating cover 320 covers the outside of the test piece 310, thereby insulating the test piece 310 from other structures.

[0062] Specifically, please refer to Figures 5 to 7 The test piece 310 is frustum-shaped. A receiving groove 313 is recessed on the side of the test piece 310 facing the battery cell 2000. The receiving groove 313 is formed by enclosing the axial test surface 311 and the circumferential test surface 312. The insulating cover 320 is also frustum-shaped. A receiving groove 321 is recessed on the side of the insulating cover 320 facing the battery cell 2000. The test piece 310 is received in the receiving groove 321. In addition, the bottom of the test piece 310 and the bottom of the insulating cover 320 are locked and connected by fasteners.

[0063] In addition, an avoidance groove 322 is formed at the bottom of the insulating cover 320. At least one fastener for locking the insulating cover 320 and the test piece 310 abuts against a conductive member 370 between the fastener and the insulating cover 320. The conductive member 370 extends out through the avoidance groove 322. The conductive member 370 is used to form an electrical connection with the test circuit, so as to perform a short-circuit test on the battery cell 2000 through the test circuit.

[0064] In one embodiment, please refer to Figure 5 and Figure 6 The test unit 300 includes a test piece 310, a test seat 330 and an elastic member 340. The elastic member 340 abuts between the test piece 310 and the test seat 330. The test seat 330 is connected to the output end of the driving mechanism 200. The test piece 310 presses against the battery cell 2000 to perform a short-circuit test on the battery cell 2000.

[0065] When the driving mechanism 200 drives the test seat 330 to slide, the test seat 330, the test piece 310 and the elastic member 340 move together. When the test piece 310 abuts against the battery cell 2000, the elastic member 340 abuts between the test seat 330 and the test piece 310 and is compressed, so that the test piece 310 elastically abuts against the battery cell 2000, thereby buffering and protecting the battery cell 2000 and preventing the test piece 310 from damaging the battery cell 2000.

[0066] In one embodiment, please refer to Figure 5 and Figure 6 , the test unit 300 further includes a guide rod 350 and a linear bearing 360. The linear bearing 360 is installed on the test seat 330. The guide rod 350 is disposed through the linear bearing 360. One end of the guide rod 350 is connected to the test piece 310, and the other end of the guide rod 350 is disposed in the test seat 330. The elastic member 340 abuts between the test seat 330 and the guide rod 350. Wherein, through the guiding cooperation between the guide rod 350 and the linear bearing 360, the telescopic movement of the elastic member 340 can be guided, and at the same time, the movement of the test piece 310 can also be guided to ensure the detection accuracy of the test piece 310 for the battery cell 2000.

[0067] Specifically, please refer to Figure 6 , an installation cavity is formed in the test seat 330. The elastic member 340 is a cylindrical spring. The elastic member 340 is received in the installation cavity. A limiting sleeve 380 is sleeved on the guide rod 350. The elastic member 340 is sleeved on the guide rod 350. Opposite ends of the elastic member 340 respectively abut against the bottom wall of the installation cavity and the limiting sleeve 380.

[0068] In one embodiment, please refer to Figure 6 , a first step is formed on the guide rod 350. The limiting sleeve 380 is sleeved on the guide rod 350. The limiting sleeve 380 axially abuts between the elastic member 340 and the first step along the axial direction of the guide rod 350, thereby axially limiting the limiting sleeve 380. It can be understood that in other embodiments, the area of the first step can also be directly made larger so that the elastic member 340 directly abuts against the first step.

[0069] In one embodiment, the linear bearing 360 is fixed to the test seat 330 by a fastener.

[0070] In one embodiment, please refer to Figure 5 , the side of the guide rod 350 facing away from the mounting seat is fixed to the insulating cover 320 by a fastener.

[0071] In one embodiment, please refer to Figure 2, the short - circuit test mechanism 1000 further includes connecting brackets 800. The two connecting brackets 800 are respectively connected to the opposite ends of the support plate 100 along the second direction Y. The connecting brackets 800 are used to be mounted on the workbench, or the connecting brackets 800 are used to be fixed on the frame of the battery cell manufacturing equipment, so that the short - circuit test mechanism 1000 can be fixed on the conveying path of the battery cell 2000.

[0072] On the other hand, please refer to Figure 1 , this application also provides a battery cell manufacturing equipment, including the above - mentioned short - circuit test mechanism. By arranging the above - mentioned short - circuit test mechanism 1000 in the conveying path during the manufacturing process of the battery cell 2000, for example, arranging it in the conveying path after the winding of the battery cell 2000, the short - circuit test of the wound battery cell 2000 is carried out, thereby improving the test efficiency of the battery cell 2000, and further improving the winding efficiency and production efficiency of the battery cell 2000. Specifically, the battery cell 2000 is conveyed by the conveying device 3000.

[0073] The above are only the preferred embodiments of this application, and are not intended to limit this application. Any modifications, equivalent replacements, and improvements made within the spirit and principle of this application shall be included in the protection scope of this application.

Claims

1. A short circuit test mechanism, characterized in that: The invention comprises a support plate (100), a drive mechanism (200) and at least two test units (300), wherein the drive mechanism (200) is mounted on the support plate (100), and the test unit (300) is connected to the output end of the drive mechanism (200); the test units (300) are arranged at intervals to enclose a conveying space (400) for conveying a battery cell (2000), and the support plate (100) and the drive mechanism (200) avoid the conveying space (400); and the two test units (300) arranged opposite to each other can be driven by the drive mechanism (200) to approach each other to clamp the opposite ends of the battery cell (2000), and perform a short circuit test on the battery cell (2000); The two test units (300) arranged opposite to each other can be driven by the drive mechanism (200) to move away from each other to release the battery core (2000).

2. The short circuit testing mechanism according to claim 1, characterized in that: The short-circuit test mechanism comprises two rows of test units (300) arranged opposite to each other, wherein the test units (300) in the same row are mounted on the same mounting plate (500), and the mounting plate (500) is connected to the output end of the drive mechanism (200).

3. The short circuit testing mechanism according to claim 2, characterized in that: The driving mechanism (200) and the test unit (300) are respectively mounted on opposite sides of the support plate (100) along a first direction (X); wherein the first direction (X) is perpendicular to the distribution direction of the two rows of the test units (300), and the first direction (X) is perpendicular to the distribution direction of each of the test units (300) in each row of the test units (300).

4. The short circuit testing mechanism according to any one of claims 1 to 3, characterized in that: Along the sliding direction of the test unit (300), the installation position of the output end of the drive mechanism (200) and the test unit (300) is adjustable.

5. The short circuit testing mechanism according to claim 4, characterized in that: An adjustment hole (510) is provided at the output end of the test unit (300) and / or the drive mechanism (200); the adjustment hole (510) extends along the sliding direction of the test unit (300); and the test unit (300) can be locked to the output end of the drive mechanism (200) at different positions of the adjustment hole (510).

6. The short circuit testing mechanism according to any one of claims 1 to 3, characterized in that: The test unit (300) comprises a test piece (310), wherein the test piece (310) comprises an axial test surface (311) and a circumferential test surface (312) extending from the periphery of the axial test surface (311), wherein the axial test surface (311) and the circumferential test surface (312) are respectively used to fit with the axial end surface and the outer peripheral surface of the tab (2100) of the battery cell (2000).

7. The short circuit testing mechanism according to claim 6, characterized in that: The circumferential test surface (312) is a conical surface, and the inner diameter of the circumferential test surface (312) gradually increases in a direction away from the axial test surface (311).

8. The short circuit testing mechanism according to claim 6, characterized in that: The test unit (300) further comprises an insulating cover (320), wherein the insulating cover (320) is arranged to cover the outside of the test piece (310).

9. The short circuit testing mechanism according to any one of claims 1 to 3, characterized in that: The test unit (300) comprises a test piece (310), a test seat (330) and an elastic piece (340); the elastic piece (340) is abutted between the test piece (310) and the test seat (330); the test seat (330) is connected to the output end of the drive mechanism (200); and the test piece (310) is used to press the battery cell (2000) to perform a short circuit test on the battery cell (2000).

10. The short circuit testing mechanism according to claim 9, characterized in that: The test unit (300) further comprises a guide rod (350) and a linear bearing (360), wherein the linear bearing (360) is mounted on the test seat (330), the guide rod (350) passes through the linear bearing (360), one end of the guide rod (350) is connected to the test piece (310), the other end of the guide rod (350) is arranged in the test seat (330), and the elastic member (340) abuts between the test seat (330) and the guide rod (350).

11. A battery cell manufacturing device, characterized in that: The invention comprises a short circuit testing mechanism as claimed in any one of claims 1 to 10.

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