Detection device and battery production line

Abstract

The invention provides a detection device (100) and a battery production line (1000), the detection device (100) comprises a fixing mechanism (10) and a plurality of test probe mechanisms (20), and the test probe mechanisms (20) are slidably connected to the fixing mechanism (10) side by side along a first direction (X). According to the detection device (100) provided by the embodiment of the invention, a plurality of test probe mechanisms (20) are arranged on a fixing mechanism (10), and each test probe mechanism (20) can slide relative to the fixing mechanism (10) along a first direction (X), so that the distance between the test probe mechanisms (20) can be adaptively adjusted according to the size of a battery monomer (400) to be tested, namely, the distance between the test probe mechanisms (20) can be adjusted according to the size of the battery monomer (400) to be tested. The size change of the incoming battery monomer (400) can be quickly responded and matched with the incoming battery monomer (400), and the detection efficiency can be greatly improved.

Description

Testing equipment and battery production line Technical Field

[0001] The present application relates to the field of OCV detection technology, and in particular to a detection device and a battery production line having the detection device. Background Art

[0002] After completing the formation, capacity division, and coding processes, the battery cells need to be subjected to OCV (Open Circuit Voltage) testing. The OCV test can obtain the battery cell's K value (K value is the voltage drop of the battery cell per unit time, reflecting the self-discharge rate of the battery cell), current, voltage, capacity and other parameters, so as to screen out battery cells with unqualified electrochemical parameters and ensure the quality of each batch of battery cells.

[0003] Typically, battery cell OCV testing is performed in batches. That is, the battery cells are arranged and tested simultaneously on all the cells in the batch. However, with battery cells of varying specifications, how to quickly respond and adapt to the corresponding test conditions has become a pressing issue.

[0004] Application Contents

[0005] The purpose of the embodiments of the present application is to provide a detection device and a battery production line, aiming to improve the technical problem of low detection efficiency of the detection device when detecting battery cells of different specifications.

[0006] The technical solution adopted in the embodiment of this application is:

[0007] In a first aspect, an embodiment of the present application provides a detection device for detecting each incoming battery cell, comprising:

[0008] a securing mechanism; and,

[0009] A plurality of test probe mechanisms are provided, each of the test probe mechanisms being slidably connected to the fixing mechanism side by side along a first direction.

[0010] The above technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0011] The detection device provided in the embodiment of the present application is provided with multiple test probe mechanisms on the fixing mechanism, and each test probe mechanism can slide relative to the fixing mechanism along a first direction. In this way, the spacing between each test probe mechanism can be adaptively adjusted according to the size of the battery cell to be tested, that is, it can quickly respond to the size changes of the incoming battery cells and adapt to them, and the detection efficiency can be greatly improved.

[0012] In some embodiments, each of the test probe mechanisms can independently slide relative to the fixing mechanism along the first direction.

[0013] By adopting the above technical solution, the spacing between the test probe mechanisms can be adjusted arbitrarily to adapt to the test requirements of battery cells of different sizes and specifications in the same batch.

[0014] In some embodiments, at least a portion of the test probe mechanism slides synchronously along the first direction relative to the fixing mechanism.

[0015] By adopting the above technical solution, each test probe mechanism can slide to the corresponding preset position at the same time, so that each battery cell can be tested quickly.

[0016] In some embodiments, each of the test probe mechanisms slides synchronously along the first direction relative to the fixing mechanism and is arranged at equal distances.

[0017] By adopting the above technical solution, each test probe mechanism can slide to the corresponding preset position at the same time, and the preset position satisfies the equal spacing between each test probe mechanism, so as to quickly detect each battery cell of the same size and specification in the same batch.

[0018] In some embodiments, the detection device includes a sliding mechanism, which includes a guide rail provided on the fixing mechanism and a slider provided on the corresponding test probe mechanism, and the slider is slidably connected to the guide rail.

[0019] By adopting the above technical solution, the sliding block in the sliding mechanism is adapted to slide with the guide rail, so as to satisfy the sliding of each test probe mechanism relative to the fixing mechanism along the first direction.

[0020] In some embodiments, the detection device also includes a synchronization mechanism, which includes a synchronization member connected to each of the test probe mechanisms and a driving member that drives the synchronization member to move relative to the fixing mechanism. The synchronization member drives each of the test probe mechanisms to slide synchronously during the movement relative to the fixing mechanism.

[0021] By adopting the above technical solution, the driving member is used to drive the synchronous member to move relative to the fixed mechanism, so that each test probe mechanism slides synchronously, thereby improving the test efficiency.

[0022] In some embodiments, the synchronizing member is slidably connected to the fixing mechanism along the second direction, a plurality of guide grooves corresponding to the test probe mechanisms are provided on the synchronizing member, and a limiting member slidably connected to the guide groove is provided on the test probe mechanism, and the second direction is perpendicular to the first direction.

[0023] By adopting the above technical solution, the limiting member slides in the guide groove to limit the sliding trajectory of each test probe mechanism, that is, each test probe mechanism slides synchronously relative to the fixing mechanism along the first direction.

[0024] In some embodiments, the guide groove has a first groove end and a second groove end, and the limiting member slides back and forth between the first groove end and the second groove end.

[0025] By adopting the above technical solution, the starting position and the ending position of the corresponding test probe mechanism relative to the fixing mechanism are respectively defined by the first slot end and the second slot end.

[0026] In some embodiments, the distance between any two adjacent first groove ends of the guide grooves is equal; and / or the distance between any two adjacent second groove ends of the guide grooves is equal.

[0027] By adopting the above technical solution, the spacing between the starting positions of each test probe mechanism is the same, and the spacing between the end positions is also the same.

[0028] In some embodiments, the driving member includes a first fixing portion, a second fixing portion, a screw portion whose two ends are respectively connected to the first fixing portion and the second fixing portion, and a nut portion threadedly connected to the screw portion. The first fixing portion and the second fixing portion are arranged on the fixing mechanism at intervals along the second direction, and the nut portion is fixedly connected to the synchronizer.

[0029] By adopting the above technical solution, the screw rod part rotates around the axis relative to the first fixed part and the second fixed part, and the nut part is threadedly engaged with the screw rod part. Since the nut part is connected to the synchronous part, the nut part moves back and forth along the axial direction of the screw rod part, and also drives the synchronous part to move back and forth.

[0030] In some embodiments, each of the guide grooves is arranged in mirror symmetry with respect to the central axis of the screw rod portion.

[0031] By adopting the above technical solution, the interaction force between each guide groove and the corresponding limit member applies force to the synchronizer more evenly, so that the synchronizer moves more smoothly relative to the fixing mechanism.

[0032] In some embodiments, the detection device further includes a bracket, and the fixing mechanism is slidably connected to the bracket and can slide relative to the bracket along the second direction.

[0033] By adopting the above technical solution, the bracket plays a bearing role, meeting the freedom of movement of each test probe mechanism in the second direction, thereby adapting to battery cells of different specifications.

[0034] In some embodiments, the detection device further includes a power mechanism, a fixed end of the power mechanism is connected to the bracket, and an output end of the power mechanism is connected to the fixing mechanism, and the power mechanism drives the fixing mechanism to move back and forth relative to the bracket in the second direction.

[0035] By adopting the above technical solution, the power mechanism provides a power source, and the movement of the fixing mechanism relative to the bracket in the second direction is more labor-saving.

[0036] In some embodiments, the test probe mechanism includes a connecting member slidably connected to the fixing mechanism and two testing members connected to an end of the connecting member away from the fixing mechanism.

[0037] By adopting the above technical solution, the two test pieces respectively perform abutment tests on the positive electrode column and the negative electrode column of the battery cell, and the connecting piece drives the two test pieces to slide relative to the fixing mechanism.

[0038] In some embodiments, at least one of the test pieces is slidably connected to the connecting piece along a third direction, and the third direction is perpendicular to the first direction.

[0039] By adopting the above technical solution, the test piece can obtain freedom of movement in the third direction, which can further adapt to the testing requirements of battery cells of different specifications.

[0040] In some embodiments, the connecting member includes a vertical portion slidably connected to the fixing mechanism and a horizontal portion perpendicularly connected to the vertical portion, and each of the test pieces is sleeved on the horizontal portion and slides relative to the horizontal portion.

[0041] By adopting the above technical solution, the horizontal portion is parallel to the third direction, and then each test piece is slidably connected to the horizontal portion.

[0042] In some embodiments, the test piece includes a test body and a probe provided on the test body, the test body is slidably connected to the connector, one end of the probe is used to abut against the electrode terminal of the battery cell, and the other end is used to electrically connect to an external test device.

[0043] By adopting the above technical solution, the probe moves with the test body to adapt to the test requirements of battery cells with different pole spacings.

[0044] In some embodiments, the number of the probes includes at least two, and the probes are spaced apart along the first direction.

[0045] By adopting the above technical solution, the number of probes is increased, and the layout position of each probe is clarified, so as to improve the accuracy of the test piece in collecting the corresponding battery cell pole.

[0046] In some embodiments, the test probe mechanism further includes a locking member for locking the test piece, wherein the locking member passes through the test piece and can abut against the connecting member.

[0047] By adopting the above technical solution, the position of the test piece relative to the connecting piece is locked by using the locking piece, so that the test piece and the connecting piece remain relatively stationary.

[0048] In a second aspect, an embodiment of the present application further provides a battery production line, comprising the detection device described above.

[0049] The battery production line provided in the embodiment of the present application has higher production efficiency based on the above-mentioned detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or related technologies. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0051] FIG1 is a schematic structural diagram of a detection device provided in some embodiments of the present application;

[0052] Figure 2 is an enlarged view of point A in Figure 1;

[0053] Figure 3 is an enlarged view of point B in Figure 1;

[0054] FIG4 is a schematic diagram of the structure of a synchronization component of a detection device provided in some embodiments of the present application;

[0055] FIG5 is a schematic diagram of the structure of a synchronization mechanism of a detection device provided in some other embodiments of the present application;

[0056] Figure 6 is an enlarged view of C in Figure 1;

[0057] FIG7 is a schematic diagram of the structure of a battery production line provided by some embodiments of the present application;

[0058] FIG8 is a schematic structural diagram of a battery cell provided in some embodiments of the present application.

[0059] Among them, the reference numerals in the figures are:

[0060] 100. Detection device;

[0061] 10. Fixing mechanism;

[0062] 20. Test probe mechanism; 21. Connector; 22. Test piece; 211. Vertical portion; 212. Horizontal portion; 221. Test body; 222. Probe; 23. Locking member; 231. Locking bolt; 232. Top screw;

[0063] 30. Sliding mechanism; 31. Guide rail; 32. Slider;

[0064] 40. Synchronizing mechanism; 41. Synchronizing member; 42. Driving member; 411. Guide groove; 412. Limiting member; 411a. First groove end; 411b. Second groove end; 421. First fixing portion; 422. Second fixing portion; 423. Screw portion; 424. Nut portion;

[0065] 41a, rotating shaft; 42a1, box body; 42a2, motor; 41a1, slot structure; 42a1, opening; 43, block; 44, connecting column;

[0066] 50. Bracket;

[0067] 60. Power mechanism;

[0068] First direction X; second direction Z; third direction Y;

[0069] 1000, battery production line; 200, conveying mechanism; 300, transfer mechanism; 400, battery cell; 401, electrode terminal. DETAILED DESCRIPTION

[0070] The following describes in detail embodiments of the present application, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0071] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the accompanying drawings are intended to cover non-exclusive inclusions.

[0072] In the description of the embodiments of the present application, the terms "length", "width", "thickness", "inside", "outside", "up", "down", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present application and simplifying the description, and do 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, they should not be understood as limitations on the present application.

[0073] The terms "first," "second," and the like are used solely for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the technical features being referred to. For example, the terms "first guide member" and "second guide member" are used solely to distinguish between the different guide members and do not define their order. The first guide member could also be named "second guide member," and the second guide member could also be named "first guide member" without departing from the scope of the various described embodiments. Furthermore, the terms "first," "second," and the like do not necessarily specify that the features being referred to are different.

[0074] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, the terms "connected", "connection", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. The meaning of "plurality" is at least two, that is, two or more.

[0075] In this application, "and / or" is simply a term used to describe a relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can represent: A exists alone, A and B exist simultaneously, or B exists alone. Furthermore, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0076] It should be noted that, in this application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or explanations. Any embodiment or design described in this application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example" is intended to present related concepts in a concrete way, meaning that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the above words in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0077] In order to make the purpose, technical solutions and advantages of this application more clear, this application is further described in detail below with reference to the accompanying drawings and embodiments.

[0078] After the battery completes the formation, capacity division and coding processes, it needs to be subjected to OCV (Open Circuit Voltage) testing. The OCV test can obtain the battery's K value (K value is the voltage drop of the battery cell per unit time, reflecting the self-discharge rate of the battery cell), current, voltage, capacity and other parameters, so as to screen out batteries with unqualified electrochemical parameters and ensure the quality of each batch of batteries.

[0079] Typically, batteries undergo OCV testing in an assembly line manner, where the batteries are placed in batches on a conveyor line, and OCV testing of dozens or even more batteries can be completed at a time. However, due to differences in battery size specifications, for example, the length, width, and height of batteries in different batches can be set differently. Therefore, when performing OCV testing on batches of batteries with different sizes and specifications, it is necessary to continuously adjust the distance between the test probes to adapt them. For example, the thickness of the batteries in the current batch is Amm, and each battery is placed side by side on a tray at a certain distance to complete the OCV testing process; while the thickness of the batteries in the next batch is Bmm, the spacing between each battery on the tray needs to be adjusted to a certain extent, or the spacing of the OCV testing probes needs to be adjusted accordingly to meet the OCV testing requirements of the batteries in this batch. In this way, the detection efficiency of the process will be reduced. Especially when facing batteries of different sizes and specifications, how to quickly respond and adapt to the corresponding test conditions needs to be solved urgently.

[0080] The present application provides a detection device that can be used to detect incoming battery cells in batches, for example, to perform OCV detection. The detection device includes a fixing mechanism and a plurality of test probe mechanisms. The fixing mechanism plays a connecting and supporting role and is used to connect each test probe mechanism. The fixing mechanism can be selected to remain fixed, or to be connected to an external drive device to obtain a corresponding degree of freedom. Each test probe mechanism is arranged side by side on the fixing mechanism along a first direction, and each test probe mechanism can slide relative to the fixing mechanism along the first direction. In this way, the spacing between each test probe mechanism can be adjusted to meet the needs of battery cells of different sizes in different batches, that is, it can meet the OCV detection of the battery cell when one of its own length, width or height is a variable, and can save the time spent on arranging the positions of each battery cell before testing, thereby improving the detection efficiency. Of course, it is understandable that the detection device can also be used in other testing scenarios.

[0081] Please refer to Figures 1 and 8. Figure 1 is a structural diagram of a detection device provided in an embodiment of the present application, and Figure 8 is a structural diagram of a battery cell provided in an embodiment of the present application.

[0082] The testing device 100 can be used to test incoming battery cells 400, such as OCV testing and temperature testing, and includes a fixing mechanism 10 and a plurality of test probe mechanisms 20. Each test probe mechanism 20 is slidably connected to the fixing mechanism 10 side by side along a first direction X.

[0083] It can be understood that the fixing mechanism 10 plays a role in connecting and supporting each test probe mechanism 20. When the fixing mechanism 10 is set, it can remain fixed or be connected to an external drive device to obtain corresponding spatial freedom. For example, the fixing mechanism 10 can be a similar gantry support mechanism, which is set up on the OCV detection station of the incoming material production line. Alternatively, the fixing mechanism 10 can be a plate-like structure or a block-like structure, and the plate-like structure or block-like structure can be connected to an external drive device, which includes but is not limited to a telescopic cylinder, a screw mechanism, a lifting mechanism, a rotating mechanism, etc. In this way, the plate-like structure or the block structure can obtain spatial freedom of movement or rotation.

[0084] Each test probe mechanism 20 can be slidably connected to the fixing mechanism 10. The connection can be made directly. For example, a guide structure such as a slide groove or a slide rail can be provided on the fixing mechanism 10, and a sliding structure compatible with the guide structure can be provided on the test probe mechanism 20. The sliding structure includes, but is not limited to, a bump or a rib. By adapting the sliding structure to the guide structure, each test probe mechanism 20 can slide on the fixing mechanism 10.

[0085] Alternatively, each test probe mechanism 20 is further slidably connected to the fixing mechanism 10 via a sliding mechanism. The sliding mechanism includes a guide rail and a slider slidably adapted to the guide rail. The guide rail is arranged on the fixing mechanism 10 along the first direction X, and each test probe mechanism 20 is slidably connected to the guide rail via the slider to meet the sliding requirement relative to the fixing mechanism 10.

[0086] The first direction X is the arrangement direction of each test probe mechanism 20 and is also related to the arrangement of the incoming battery cells 400. For example, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the thickness direction or the length direction of the incoming battery cells 400. Alternatively, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the width direction or the length direction of the incoming battery cells 400. Alternatively, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the width direction or the length direction of the incoming battery cells 400. Alternatively, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the thickness direction or the width direction of the incoming battery cells 400. In this way, each test probe mechanism 20 can slide along the first direction X to adapt to a single variable in length, width, or thickness of the incoming battery cells 400.

[0087] It should be noted that the test probe mechanism 20 can slide positively and negatively relative to the fixing mechanism 10, that is, it can move back and forth along the first direction X. Therefore, each test probe mechanism 20 slides in the first direction X regardless of whether it slides positively or negatively along the first direction X.

[0088] Meanwhile, the correlation between the sliding of each test probe mechanism 20 on the fixing mechanism 10 includes but is not limited to independent sliding and synchronous sliding.

[0089] It can be understood that the independent sliding of each test probe mechanism 20 relative to the fixing mechanism 10 means that each test probe mechanism 20 does not affect each other when sliding relative to the fixing mechanism 10, that is, any test probe mechanism 20 can move any distance along the positive direction or negative direction of the first direction X. In this way, it can be used to perform OCV detection on battery cells 400 of different sizes and specifications in the same batch, and is suitable for tests conducted in an experimental test environment.

[0090] Alternatively, each test probe mechanism 20 can also slide synchronously relative to the fixed mechanism 10. Here, synchronous sliding can refer to the synchronous sliding of some of the test probe mechanisms 20, or it can refer to the synchronous sliding of all the test probe mechanisms 20. In addition, each synchronously sliding test probe mechanism 20 can move synchronously along the positive direction or negative direction of the first direction X. The characteristic of synchronous movement is that it can achieve consistency in the moving distance of each test probe mechanism 20, and can quickly make each test probe mechanism 20 present an equidistant arrangement along the first direction X, which is suitable for tests conducted in an actual production environment.

[0091] The detection device 100 provided in the embodiment of the present application is provided with a plurality of test probe mechanisms 20 on the fixing mechanism 10, and each test probe mechanism 20 can slide relative to the fixing mechanism 10 along the first direction X. In this way, the spacing between each test probe mechanism 20 can be adaptively adjusted according to the size of the battery cell 400 to be tested, that is, it can quickly respond to the size changes of the incoming battery cell 400 and adapt to it, and the detection efficiency can be greatly improved.

[0092] In some embodiments, each test probe mechanism 20 can independently slide along the first direction X relative to the fixing mechanism 10 .

[0093] It can be understood that the sliding of each test probe mechanism 20 in the first direction X does not affect each other, that is, any test probe mechanism 20 can slide relative to the fixing mechanism 10 along the positive direction or negative direction of the first direction X, and the distance between the test probe mechanism 20 and the two adjacent test probe mechanisms 20 can also be adjusted arbitrarily.

[0094] The sliding form between each test probe mechanism 20 and the fixing mechanism 10 can be direct sliding, indirect sliding, or part direct sliding and part indirect sliding.

[0095] For example, a sliding groove extending along the first direction X is provided on the fixing mechanism 10, and each test probe mechanism 20 is provided with a protrusion adapted to the sliding groove. The protrusion is used to slide in the sliding groove to realize relative sliding of each test probe mechanism 20 relative to the fixing mechanism 10, and the sliding direction and sliding distance are not restricted.

[0096] For example, a slide rail is provided on the fixing mechanism 10, and a slider slidably connected to the slide rail is provided on each test probe mechanism 20. The slider and the slide rail are slidably matched to realize relative sliding of each test probe mechanism 20 relative to the fixing mechanism 10, and the sliding direction and sliding distance are not restricted.

[0097] In this way, the spacing between each test probe mechanism 20 can be adjusted arbitrarily to accommodate the testing requirements of battery cells 400 of varying sizes within the same batch. For example, for battery cells 400 of varying widths within the same batch, the spacing between the test probe mechanisms 20 corresponding to each battery cell 400 can be adjusted accordingly. This makes the testing device 100 more suitable for testing requirements in a laboratory test environment, enabling it to complete OCV testing on battery cells 400 of varying sizes in a single test.

[0098] In some embodiments, at least a portion of the test probe mechanism 20 slides synchronously along the first direction X relative to the fixing mechanism 10 .

[0099] It is understood that synchronous sliding relative to the fixing mechanism 10 means that the test probe mechanism 20 can maintain synchronization during the sliding process, for example, synchronously starting, sliding, and stopping sliding. Furthermore, the number of test probe mechanisms 20 that slide synchronously can be some or all. Furthermore, the direction of synchronous sliding can be sliding in the positive direction of the first direction X or in the negative direction of the first direction X.

[0100] The sliding form between each test probe mechanism 20 and the fixing mechanism 10 can be direct sliding, indirect sliding, or part direct sliding and part indirect sliding.

[0101] For example, a sliding groove extending along the first direction X is provided on the fixing mechanism 10, and each test probe mechanism 20 is provided with a protrusion adapted to the sliding groove. The protrusion is used to slide in the sliding groove to realize relative sliding of each test probe mechanism 20 relative to the fixing mechanism 10, and the sliding direction and sliding distance are not restricted.

[0102] For example, a slide rail is provided on the fixing mechanism 10, and a slider slidably connected to the slide rail is provided on each test probe mechanism 20. The slider and the slide rail are slidably matched to realize relative sliding of each test probe mechanism 20 relative to the fixing mechanism 10, and the sliding direction and sliding distance are not restricted.

[0103] Since at least some of the test probe mechanisms 20 can maintain synchronization before, during, and after sliding, the relative positions of the test probe mechanisms 20 on the fixing mechanism 10 can be set.

[0104] For example, the initial positions of each test probe mechanism 20 relative to the fixing mechanism 10 are not arranged at equal intervals. Through the synchronization of sliding, each test probe mechanism 20 can be kept at equal intervals in the position during sliding relative to the fixing mechanism 10 or the position at the end of sliding, so as to meet the testing requirements of battery cells 400 of the same size and specifications of the same batch.

[0105] Alternatively, the initial positions of each test probe mechanism 20 relative to the fixing mechanism 10 are arranged at equal intervals, and through the synchronization of sliding, the positions of each test probe mechanism 20 during sliding relative to the fixing mechanism 10 or the positions at the end of sliding can be kept at non-equal intervals to meet the testing requirements of battery cells 400 of different sizes and specifications of the same batch.

[0106] With this arrangement, each test probe mechanism 20 can slide to a corresponding preset position at the same time, thereby enabling rapid testing of each battery cell 400 .

[0107] In some embodiments, each test probe mechanism 20 slides synchronously along the first direction X relative to the fixing mechanism 10 and is arranged at equal distances.

[0108] It can be understood that each test probe mechanism 20 slides synchronously relative to the fixing mechanism 10 , and ultimately each test probe mechanism 20 is arranged at equal distances in the first direction X.

[0109] Specifically, the sliding form between each test probe mechanism 20 and the fixing mechanism 10 adopts indirect sliding, that is, the relative sliding between the two is achieved by adding a sliding structure. This method has higher sliding stability of each test probe mechanism 20, which facilitates the final equal spacing setting result.

[0110] For example, a slide rail is provided on the fixing mechanism 10, and a slider slidably connected to the slide rail is provided on each test probe mechanism 20. The slider and the slide rail are slidably matched to realize relative sliding of each test probe mechanism 20 relative to the fixing mechanism 10, and the sliding direction and sliding distance are not restricted.

[0111] With this arrangement, each test probe mechanism 20 can slide to a corresponding preset position at the same time, and the preset position satisfies the equal spacing between each test probe mechanism 20 , so as to quickly test each battery cell 400 of the same size and specification in the same batch.

[0112] 2 , in some embodiments, the detection device 100 includes a sliding mechanism 30 , which includes a guide rail 31 disposed on the fixing mechanism 10 and a slider 32 disposed on the corresponding test probe mechanism 20 , and the slider 32 is slidably connected to the guide rail 31 .

[0113] Here, the sliding between the fixing mechanism 10 and each test probe mechanism 20 is indirect, that is, the sliding between the two is achieved through the sliding mechanism 30. Specifically, a guide rail 31 is arranged on the fixing mechanism 10 along the first direction X, and a slider 32 is provided on each test probe mechanism 20, and each slider 32 is slidably connected to the guide rail 31.

[0114] With such a configuration, the slider 32 in the sliding mechanism 30 slides in conjunction with the guide rail 31 , so that each test probe mechanism 20 can slide along the first direction X relative to the fixing mechanism 10 .

[0115] In other embodiments, a plurality of spaced guide rails 31 may be provided on the fixing mechanism 10, and a plurality of sliders 32 slidably adapted thereto may be provided on the test probe mechanism 20. The plurality of sliders 32 slidably adapted to the guide rails 31 further enhance the sliding stability of each test probe mechanism 20 on the fixing mechanism 10.

[0116] Please refer to Figure 1. In some embodiments, the detection device 100 also includes a synchronization mechanism 40, which includes a synchronization member 41 connected to each test probe mechanism 20 and a driving member 42 that drives the synchronization member 41 to move relative to the fixed mechanism 10. The synchronization member 41 drives each test probe mechanism 20 to slide synchronously during the movement relative to the fixed mechanism 10.

[0117] It can be understood that the synchronization mechanism 40 is used to achieve synchronous sliding of each test probe mechanism 20 along the first direction X. Here, the synchronization mechanism 40 that can achieve synchronous sliding of each test probe mechanism 20 should include a synchronization member 41 and a driving member 42. Among them, the synchronization member 41 is used to connect with each test probe mechanism 20 to play a role in synchronous driving, and the driving member 42 provides a power source to drive the synchronization member 41 to move relative to the fixed mechanism 10, and then the moving synchronization member 41 drives each test probe mechanism 20 to slide synchronously.

[0118] For example, as shown in FIG1 , the synchronizer 41 can be similar to a plate-like structure or a block-like structure, and each test probe mechanism 20 is slidably connected to the synchronizer 41, that is, relative sliding can occur between the two. Here, the sliding form between the synchronizer 41 and each test probe mechanism 20 can be direct sliding or indirect sliding. For example, a plurality of slide grooves are provided on the synchronizer 41, and each test probe mechanism 20 is slidably connected to the corresponding slide groove. The driving member 42 includes but is not limited to a screw mechanism, a lifting mechanism, a telescopic cylinder, a servo motor, etc. The driving member 42 drives the synchronizer 41 to move up and down in the direction of gravity, so that each test probe mechanism 20 slides synchronously in the first direction X.

[0119] For example, as shown in FIG5 , the synchronizer 41 includes a rotating shaft 41a, the driving member 42 includes a box body 42a1 and a motor 42a2 provided at one end of the box body 42a1, the rotating shaft 41a is rotatably connected to the interior of the box body 42a1 and is connected to the output end of the motor 42a2, the rotating shaft 41a is provided with a plurality of spirally distributed groove structures 41a1, an opening 42a1 communicating with the outside is provided on one side surface of the box body 42a1, and the box body 42a1 is provided with a plurality of spirally distributed groove structures 41a1. Multiple blocks 43 are slidably connected to this side of the housing 42a1. Blocks 43 are provided with connecting posts 44. These connecting posts 44 extend into the housing 42a1 through openings 42a1 and fit within the slot structures 41a1. Driven by motor 42a2, the rotating shaft 41a rotates about its own axis relative to the housing 42a1. The connecting posts 44, limited by the slot structures 41a1, slide relative to the housing 42a1, thereby connecting each test probe mechanism 20 to its corresponding block 43. In this embodiment, the rotating shaft 41a is arranged along the first direction X and rotates about its own axis relative to the fixing mechanism 10.

[0120] With this arrangement, the driving member 42 drives the synchronizing member 41 to move relative to the fixing mechanism 10 , so that each test probe mechanism 20 slides synchronously, thereby improving the test efficiency.

[0121] Please refer to Figures 1, 3 and 4. In a specific embodiment, the synchronizer 41 is slidably connected to the fixing mechanism 10 along the second direction Z. The synchronizer 41 is provided with a plurality of guide grooves 411 corresponding to each test probe mechanism 20. The test probe mechanism 20 is provided with a limiting member 412 slidably connected to the guide groove 411. The second direction Z is perpendicular to the first direction X.

[0122] It can be understood that, according to the arrangement of the electrode terminals 401 of the incoming battery cells 400, when the electrode terminals 401 are arranged on the end faces where the thickness and length of the battery cells 400 are located, the first direction X may be the thickness direction or the length direction of the incoming battery cells 400; then, the second direction Z is the width direction of the battery cells 400; or, when the electrode terminals 401 are arranged on the end faces where the width and length of the battery cells 400 are located, the first direction X may be the width direction or the length direction of the incoming battery cells 400, and the second direction Z is the thickness direction of the battery cells 400; or, when the electrode terminals 401 are arranged on the end faces where the thickness and width of the battery cells 400 are located, the first direction X may be the thickness direction or the width direction of the incoming battery cells 400, and the second direction Z is the length direction of the battery cells 400.

[0123] The sliding between the synchronizer 41 and the fixing mechanism 10 can be direct or indirect, for example, by using a guide rail mechanism. Furthermore, the driving member 42 drives the synchronizer 41 to reciprocate relative to the fixing mechanism 10 in the second direction Z. Similarly, whether the synchronizer 41 slides in the second direction Z in a positive or negative direction, it is still sliding in the second direction Z.

[0124] Each guide groove 411 should be within the plane of the first direction X and the second direction Z. The guide grooves 411 include, but are not limited to, oblique straight grooves, arcuate grooves, and combinations of oblique straight grooves and arcuate grooves. The extension direction of the guide grooves 411 forms an angle with the second direction Z. Here, the extension direction of the guide grooves refers to the direction of the line connecting the two groove ends of the guide grooves. Each guide groove 411 can be arranged in the same direction on the synchronizer 41, that is, the angle between the extension direction of each guide groove 411 and the second direction Z is an acute angle or an obtuse angle. At this time, driven by the synchronizer 41, the corresponding test probe mechanism 20 slides synchronously along the positive direction or negative direction of the first direction X; or, each guide groove 411 can be arranged opposite to each other on the synchronizer 41, that is, the extension direction of the guide groove 411 of one part is an acute angle with the second direction Z, and the extension direction of the guide groove 411 of the other part is an obtuse angle with the second direction Z. At this time, driven by the synchronizer 41, the test probe mechanism 20 corresponding to the angle between the extension direction of the guide groove 411 and the second direction Z is an acute angle slides synchronously along the positive direction of the first direction X, and the test probe mechanism 20 corresponding to the angle between the extension direction of the guide groove 411 and the second direction Z is an obtuse angle slides synchronously along the negative direction of the first direction X. Of course, the corresponding relationship between the two can be swapped.

[0125] The limiting member 412 is limited to slide in the guide groove 411 . According to the groove shape of the guide groove 411 , the limiting member 412 includes but is not limited to a limiting column, a limiting block, a limiting tube, etc.

[0126] Optionally, the limiting member 412 is a screw, which is connected to the test probe mechanism 20 by screwing, and the screw rod or nut portion of the screw can be used to limit the sliding in the guide groove 411, thereby achieving synchronous movement of the synchronization member 41 and each test probe mechanism 20.

[0127] For example, as shown in FIG4 , each guide groove 411 is an oblique straight groove, and each guide groove 411 is equally divided into two groups. The symmetrical structure of the synchronizer 41 is symmetrical, with the symmetrical center line of the synchronizer 41 as the symmetrical center, and each guide groove 411 is distributed on the synchronizer 41 in a mirror image. At this time, the extension direction of a portion of the guide grooves 411 forms an acute angle with the second direction Z, and, in the first direction X, the further away from the symmetrical center line of the synchronizer 41, the greater the acute angle between the extension direction of the guide groove 411 and the second direction Z. Similarly, the extension direction of a portion of the guide grooves 411 forms an obtuse angle with the second direction Z, and, in the first direction X, the further away from the synchronizer 41 The larger the obtuse angle between the extension direction of the guide groove 411 of the symmetric center line and the second direction Z, when the synchronizer 41 reciprocates in the second direction Z relative to the fixing mechanism 10, the test probe mechanism 20 corresponding to the acute angle between the extension direction of the guide groove 411 and the second direction Z slides synchronously in the positive direction of the first direction X, and the test probe mechanism 20 corresponding to the obtuse angle between the extension direction of the guide groove 411 and the second direction Z slides synchronously in the negative direction of the first direction X, and the entire synchronous sliding process is very smooth.

[0128] In this configuration, the limiting member 412 slides in the guide groove 411 to limit the sliding trajectory of each test probe mechanism 20 , that is, each test probe mechanism 20 slides synchronously along the first direction X relative to the fixing mechanism 10 .

[0129] Referring to FIG. 4 , in some embodiments, the guide slot 411 has a first slot end 411 a and a second slot end 411 b , and the limiting member 412 slides back and forth between the first slot end 411 a and the second slot end 411 b .

[0130] Here, the groove end of the guide groove 411 refers to the starting position or the end position of the guide groove 411. The two groove ends are connected to each other, and the limiter 412 slides in the guide groove 411. The first groove section is the starting position of the guide groove 411, and the second groove end 411b is the end position of the guide groove 411. The limiter 412 on each test probe mechanism 20 slides back and forth between the first groove end 411a and the second groove end 411b of the corresponding guide groove 411. It can be understood that when the limiter 412 is at the first groove end 411a, the test probe mechanism 20 is in the first position on the fixing mechanism 10, and when the limiter 412 is at the second groove end 411b, the test probe mechanism 20 is in the second position on the fixing mechanism 10. Here, the test probe mechanism 20 can perform OCV testing on the incoming battery cells 400 at the first position, the second position, or an intermediate position between the first position and the second position.

[0131] 4 , in some embodiments, the distance M between the first groove ends 411 a of any two adjacent guide grooves 411 is equal; and / or the distance N between the second groove ends 411 b of any two adjacent guide grooves 411 is equal.

[0132] It is understood that the guide grooves 411 are typically formed using a milling tool. Therefore, the geometric center of the first groove end 411a is the rotational center of the milling tool. Similarly, the geometric center of the second groove end 411b is also another rotational center of the milling tool. Therefore, the spacing M between the first groove ends 411a of two guide grooves 411 is the distance between the geometric centers of the two first groove ends 411a. Similarly, the spacing N between the second groove ends 411b of two guide grooves 411 is the distance between the geometric centers of the two second groove ends 411b.

[0133] In this way, the spacing M between the first groove ends 411a of each guide groove 411 is equal, so the distance between the corresponding test probe mechanisms 20 is also equal, that is, the spacing between the starting positions of each test probe mechanism 20 is the same, which is suitable for testing battery cells 400 of the same specifications in the same batch.

[0134] Similarly, the spacing N between the second groove ends 411b of each guide groove 411 is equal, so the distance between the corresponding test probe mechanisms 20 is also equal, that is, the spacing between the end positions of each test probe mechanism 20 is the same, which is suitable for testing battery cells 400 of the same specifications in the same batch.

[0135] Please refer to Figure 1. In some embodiments, the driving member 42 includes a first fixing portion 421, a second fixing portion 422, a screw portion 423 whose two ends are respectively connected to the first fixing portion 421 and the second fixing portion 422, and a nut portion threadedly connected to the screw portion 423. The first fixing portion 421 and the second fixing portion 422 are arranged on the fixing mechanism 10 at intervals along the second direction Z, and the nut portion is fixedly connected to the synchronizer 41.

[0136] It can be understood that the first fixing portion 421 and the second fixing portion 422 are components whose relative positions are fixed in the driving member 42. The first fixing portion 421 and the second fixing portion 422 can be block structures or strip structures, and the two are used to be fixed to the fixing mechanism 10. For example, the first fixing portion 421 and the second fixing portion 422 can be connected to the fixing mechanism 10 by fasteners such as screws and pins.

[0137] The screw portion 423 has an external thread that is threadably engaged with the nut portion 424. The screw portion 423 rotates about its own axis and engages with the nut portion 424 during the rotation process, connecting the nut portion 424 to the synchronizer 41, so that the synchronizer 41 reciprocates in the second direction Z driven by the nut portion 424.

[0138] The nut portion 424 is a structural member with an internal thread, which is threadedly engaged with the screw portion 423. The nut portion 424 can be a non-standard nut or a block with an internal thread. While being engaged with the screw portion 423, it also needs to be connected to the synchronizer 41.

[0139] Here, the screw portion 423 can be manually rotated about its own axis, or can be automatically rotated about the axis by mechanical transmission. For example, when the screw portion 423 rotates clockwise about the axis, the nut portion 424 drives the synchronizer 41 to move in the positive direction of the second direction Z. And, when the screw portion 423 rotates counterclockwise about the axis, the nut portion 424 drives the synchronizer 41 to move in the negative direction of the second direction Z.

[0140] In this arrangement, the screw rod portion 423 rotates around the axis relative to the first fixed portion 421 and the second fixed portion 422, and the nut portion 424 is threadedly engaged with the screw rod portion 423. Since the nut portion 424 is connected to the synchronizer 41, the nut portion 424 moves back and forth along the axial direction of the screw rod portion 423, and also drives the synchronizer 41 to move back and forth in the second direction Z.

[0141] Referring to FIG. 1 and FIG. 4 , in some embodiments, each guide groove 411 is arranged in mirror symmetry with respect to the central axis of the screw rod portion 423 .

[0142] It can be understood that the screw rod portion 423 of the driving portion is located at the symmetrical center of the synchronizer 41. When the screw rod portion 423 rotates around the axis, the synchronizer 41 moves back and forth along the second direction Z driven by the nut portion 424. Since each guide groove 411 is arranged in a mirror-symmetrical manner about the central axis of the screw rod portion 423, the movement trajectory of the limit members 412 on each test probe mechanism 20 in the corresponding guide groove 411 is also symmetrical. In this way, the interaction force between each guide groove 411 and the corresponding limit member 412 applies more uniform force to the synchronizer 41, making the synchronizer 41 smoother during the movement relative to the fixing mechanism 10.

[0143] For example, each guide groove 411 is an oblique straight groove, and every two guide grooves 411 form a group, which are symmetrically distributed on the synchronizer 41 about the central axis of the screw rod portion 423. Moreover, the farther the guide groove 411 is from the central axis of the screw rod portion 423, the greater the angle between it and the second direction Z. In this way, it is convenient for each test probe mechanism 20 to disperse along the first direction X under the drive of the limiting member and to be arranged at intervals.

[0144] Referring to FIG. 1 , in some embodiments, the detection device 100 further includes a bracket 50 . The fixing mechanism 10 is slidably connected to the bracket 50 and can slide relative to the bracket 50 along a second direction Z.

[0145] Here, the bracket 50 plays a bearing role, satisfying the freedom of movement of each test probe mechanism 20 in the second direction Z. The sliding form between the bracket 50 and the fixing mechanism 10 can be direct sliding, indirect sliding, or partial direct sliding and partial indirect sliding.

[0146] For example, a slide rail is provided on the bracket 50, and a slider slidably connected to the slide rail is provided on the fixing mechanism 10. The slider and the slide rail are slidably matched to realize relative sliding of the fixing mechanism 10 relative to the bracket 50, and the sliding direction and sliding distance are not restricted.

[0147] Please refer to Figure 1. In some embodiments, the detection device 100 also includes a power mechanism 60, the fixed end of the power mechanism 60 is connected to the bracket 50, and the output end of the power mechanism 60 is connected to the fixing mechanism 10. The power mechanism 60 drives the fixing mechanism 10 to move back and forth relative to the bracket 50 in the second direction Z.

[0148] It can be understood that the power mechanism 60 is used to provide a power source to drive the fixing mechanism 10 to move relative to the bracket 50 in the second direction Z, and the movement process is more labor-saving.

[0149] Here, the power mechanism 60 includes but is not limited to a screw mechanism, a cylinder mechanism, a lifting mechanism, a servo motor, and the like.

[0150] 1 , 6 and 8 , in some embodiments, the test probe mechanism 20 includes a connector 21 slidably connected to the fixing mechanism 10 and two test members 22 connected to an end of the connector 21 away from the fixing mechanism 10 .

[0151] It is understood that the connecting member 21 is used to support and connect the test pieces 22. The sliding between the connecting member 21 and the fixing mechanism 10 can be direct, indirect, or partially direct and partially indirect. For example, a slide rail can be provided on the fixing mechanism 10, and a slider slidably connected to the slide rail can be provided on the connecting member 21. The slider and the slide rail can slide together to achieve relative sliding of the connecting member 21 relative to the fixing mechanism 10, and the sliding direction and distance are not restricted.

[0152] The test piece 22 is used to abut against the electrode terminal 401 of the battery cell 400 to collect electrical signals. This test piece 22 should be electrically connected to an external electrical testing device, transmitting the collected electrical signals to the external electrical testing device. Specifically, during testing, two test pieces 22 abut against the positive and negative electrode posts of the battery cell 400, respectively.

[0153] In some embodiments, at least one test piece 22 is slidably connected to the connecting piece 21 along a third direction Y, and the third direction Y is perpendicular to the first direction X.

[0154] It can be understood that the third direction Y is the direction in which the electrode terminals 401 on the battery cells 400 are spaced apart. Since the spacing between the electrode terminals 401 on battery cells 400 of different sizes varies, one of the test pieces 22 can be selected to slide relative to the connecting piece 21 along the third direction Y, or both test pieces 22 can be selected to slide relative to the connecting piece 21 along the third direction Y to adapt to battery cells 400 with different spacing between the electrode terminals 401.

[0155] Here, the sliding of the test piece 22 relative to the connecting piece 21 along the third direction Y refers to the relative sliding along the positive direction or the negative direction of the third direction Y.

[0156] Furthermore, the sliding form between the test piece 22 and the connecting piece 21 can be direct sliding, indirect sliding, or part direct sliding and part indirect sliding.

[0157] For example, a slide rail is provided on the connecting member 21, and a slider slidably connected to the slide rail is provided on the test member 22. The slider and the slide rail are slidably matched to realize relative sliding of the test member relative to the connecting member 21, and the sliding direction and sliding distance are not restricted.

[0158] With such a configuration, the test piece 22 can obtain a degree of freedom of movement in the third direction Y, and can further adapt to the testing requirements of battery cells 400 of different specifications.

[0159] 6 , in some embodiments, the connecting member 21 includes a vertical portion 211 slidably connected to the fixing mechanism 10 and a horizontal portion 212 perpendicularly connected to the vertical portion 211 . Each test piece 22 is sleeved on the horizontal portion 212 and slides relative to the horizontal portion 212 .

[0160] Here, the connecting member 21 forms a T-shaped structure, with the vertical portion 211 slidably connected to the fixing mechanism 10. That is, the sliding between the vertical portion 211 and the fixing mechanism 10 can be direct, indirect, or partially direct and partially indirect. The vertical portion 211 is a structural member arranged along the second direction Z, while the horizontal portion 212 is arranged parallel to the third direction Y. Therefore, each test piece 22 is slidably connected to the horizontal portion 212 and moves relative to the connecting member 21.

[0161] Please refer to Figure 6. In some embodiments, the test piece 22 includes a test body 221 and a probe 222 provided on the test body 221. The test body 221 is slidably connected to the connector 21. One end of the probe 222 is used to abut against the electrode terminal 401 of the battery cell 400, and the other end is used to electrically connect to an external testing device.

[0162] It can be understood that the test body 221 plays the role of carrying the probe 222 , and the probe 222 moves with the test body 221 to adapt to the testing requirements of the battery cells 400 with different pole spacings.

[0163] Here, the shape structure of the test body 221 includes but is not limited to a straight bar structure, an L-shaped structure, and the like.

[0164] Referring to FIG. 6 , in some embodiments, the number of the probes 222 includes at least two, and the probes 222 are arranged along the first direction X at intervals.

[0165] It can be understood that increasing the number of probes 222 can adapt to different width requirements of the electrode terminals 401 in the first direction X, thereby improving the accuracy of the test piece 22 in collecting the electrode terminals 401 of the corresponding battery cells 400 .

[0166] Optionally, there are two probes 222, and the two probes 222 are spaced apart along the first direction X. The distance between the two probes 222 is smaller than the width of the electrode terminal 401 of the battery cell 400 in the first direction X. In this way, when the two probes 222 are in abutment contact with the electrode terminal 401 of the battery cell 400, both probes 222 can complete the abutment action.

[0167] Referring to FIG. 6 , in some embodiments, the test probe mechanism 20 further includes a locking member 23 for locking the test piece 22 . The locking member 23 passes through the test piece 22 and can abut against the connecting member 21 .

[0168] It can be understood that the locking member 23 is used to lock the test member 22 to reduce the probability of relative sliding between the test member 22 and the connecting member 21. Specifically, the locking member 23 is provided through the test member 22 and maintains relative stillness with the connecting member 21 by abutting.

[0169] For example, as shown in FIG6 , the locking member 23 includes a locking bolt 231 . A threaded hole is provided on the test member 22 , and the locking bolt 231 is screwed into the threaded hole until it abuts against the connecting member 21 to prevent the test member 22 from sliding relative to the connecting member 21 .

[0170] For example, as shown in FIG6 , the locking member 23 includes a push screw 232. Similarly, a threaded hole is formed in the test member 22, and the push screw 232 is screwed into the threaded hole until it abuts against the connecting member 21, thereby preventing the test member 22 from sliding relative to the connecting member 21. Unlike the locking bolt 231, the push screw 232 can be completely screwed into the test member 22, that is, it is externally hidden inside the test member 22.

[0171] Please refer to Figures 1 to 6 and 8, the following is a specific embodiment of the present application.

[0172] The detection device 100 includes a fixing mechanism 10 , a plurality of test probe mechanisms 20 , a bracket 50 , a power mechanism 60 , a sliding mechanism 30 and a synchronization mechanism 40 .

[0173] Each test probe mechanism 20 is slidably connected to the fixing mechanism 10 side by side along a first direction X. The first direction X is the arrangement direction of each test probe mechanism 20 and is also related to the arrangement of the incoming battery cells 400. For example, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the thickness direction or the length direction of the incoming battery cells 400. Alternatively, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the width direction or the length direction of the incoming battery cells 400. Alternatively, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the width direction or the length direction of the incoming battery cells 400. Alternatively, if the electrode terminals 401 of the incoming battery cells 400 are located on the end surfaces of the battery cells 400, the first direction X may be the thickness direction or the width direction of the incoming battery cells 400. In this way, each test probe mechanism 20 can slide along the first direction X to adapt to a single variable in length, width, or thickness of the incoming battery cells 400.

[0174] A plurality of test probe mechanisms 20 are arranged on the fixing mechanism 10, and each test probe mechanism 20 can slide relative to the fixing mechanism 10 along the first direction X. In this way, the spacing between each test probe mechanism 20 can be adaptively adjusted according to the size of the battery cell 400 to be tested, that is, it can quickly respond to the size changes of the incoming battery cell 400 and adapt to it, and the detection efficiency can be greatly improved.

[0175] The sliding mechanism 30 includes a guide rail disposed on the fixing mechanism 10 and a slider disposed on the corresponding test probe mechanism 20 , and the slider is slidably connected to the guide rail.

[0176] In this configuration, the slider in the sliding mechanism 30 slides in conjunction with the guide rail, so that each test probe mechanism 20 can slide along the first direction X relative to the fixing mechanism 10 .

[0177] The synchronization mechanism 40 includes a synchronization member 41 connected to each test probe mechanism 20 and a driving member 42 for driving the synchronization member 41 to move relative to the fixing mechanism 10 . The synchronization member 41 drives each test probe mechanism 20 to slide synchronously during the movement relative to the fixing mechanism 10 .

[0178] The synchronization mechanism 40 is used to achieve synchronized sliding of each test probe mechanism 20 along the first direction X. Here, the synchronization mechanism 40 capable of achieving synchronized sliding of each test probe mechanism 20 should include a synchronization member 41 and a driving member 42. The synchronization member 41 is used to connect with each test probe mechanism 20 to drive synchronization, while the driving member 42 provides a power source to drive the synchronization member 41 to move relative to the fixed mechanism 10. The moving synchronization member 41 then drives each test probe mechanism 20 to slide synchronously.

[0179] Specifically, the synchronizer 41 is slidably connected to the fixing mechanism 10 along the second direction Z. A plurality of guide grooves 411 corresponding to each test probe mechanism 20 are provided on the synchronizer 41. The test probe mechanism 20 is provided with a limiter 412 slidably connected to the guide groove 411. The second direction Z is perpendicular to the first direction X.

[0180] Depending on the arrangement of the electrode terminals 401 of the incoming battery cells 400, when the electrode terminals 401 are arranged on the end faces where the thickness and length of the battery cells 400 are located, the first direction X may be the thickness direction or the length direction of the incoming battery cells 400; then, the second direction Z is the width direction of the battery cells 400; or, when the electrode terminals 401 are arranged on the end faces where the width and length of the battery cells 400 are located, the first direction X may be the width direction or the length direction of the incoming battery cells 400, and the second direction Z may be the thickness direction of the battery cells 400; or, when the electrode terminals 401 are arranged on the end faces where the thickness and width of the battery cells 400 are located, the first direction X may be the thickness direction or the width direction of the incoming battery cells 400, and the second direction Z may be the length direction of the battery cells 400.

[0181] The sliding between the synchronizer 41 and the fixing mechanism 10 can be direct or indirect, for example, by using a guide rail mechanism. Furthermore, the driving member 42 drives the synchronizer 41 to reciprocate relative to the fixing mechanism 10 in the second direction Z. Similarly, whether the synchronizer 41 slides in the second direction Z in a positive or negative direction, it is still sliding in the second direction Z.

[0182] Each guide groove 411 should be within the plane of the first direction X and the second direction Z. The guide grooves 411 include, but are not limited to, oblique straight grooves, arcuate grooves, and combinations of oblique straight grooves and arcuate grooves. The extension direction of the guide grooves 411 forms an angle with the second direction Z. Here, the extension direction of the guide grooves refers to the direction of the line connecting the two groove ends of the guide grooves. Each guide groove 411 can be arranged in the same direction on the synchronizer 41, that is, the angle between the extension direction of each guide groove 411 and the second direction Z is an acute angle or an obtuse angle. At this time, driven by the synchronizer 41, the corresponding test probe mechanism 20 slides synchronously along the positive direction or negative direction of the first direction X; or, each guide groove 411 can be arranged opposite to each other on the synchronizer 41, that is, the extension direction of the guide groove 411 of one part is an acute angle with the second direction Z, and the extension direction of the guide groove 411 of the other part is an obtuse angle with the second direction Z. At this time, driven by the synchronizer 41, the test probe mechanism 20 corresponding to the angle between the extension direction of the guide groove 411 and the second direction Z is an acute angle slides synchronously along the positive direction of the first direction X, and the test probe mechanism 20 corresponding to the angle between the extension direction of the guide groove 411 and the second direction Z is an obtuse angle slides synchronously along the negative direction of the first direction X. Of course, the corresponding relationship between the two can be swapped.

[0183] The limiting member 412 is limited to slide in the guide groove 411 . According to the groove shape of the guide groove 411 , the limiting member 412 includes but is not limited to a limiting column, a limiting block, a limiting tube, etc.

[0184] Optionally, each guide groove 411 is arranged in mirror symmetry with respect to the central axis of the screw rod portion 423 .

[0185] The screw rod portion 423 of the driving portion is located at the symmetrical center of the synchronizer 41. When the screw rod portion 423 rotates around the axis, the synchronizer 41 moves back and forth along the second direction Z driven by the nut portion 424. Since each guide groove 411 is arranged in a mirror-symmetrical manner about the central axis of the screw rod portion 423, the movement trajectory of the limit members 412 on each test probe mechanism 20 in the corresponding guide groove 411 is also symmetrical. In this way, the interaction force between each guide groove 411 and the corresponding limit member 412 applies more uniform force to the synchronizer 41, so that the synchronizer 41 moves more smoothly relative to the fixing mechanism 10.

[0186] Among them, each guide groove 411 is an oblique straight groove, and every two guide grooves 411 form a group, which are symmetrically distributed on the synchronizer 41 about the central axis of the screw rod part 423. Moreover, the farther the guide groove 411 is from the central axis of the screw rod part 423, the greater the angle between it and the second direction Z. In this way, it is convenient for each test probe mechanism 20 to disperse along the first direction X under the drive of the limiting member and be arranged at intervals.

[0187] The guide groove 411 has a first groove end 411 a and a second groove end 411 b , and the limiting member 412 slides back and forth between the first groove end 411 a and the second groove end 411 b .

[0188] Here, the groove end of the guide groove 411 refers to the starting position or the end position of the guide groove 411. The two groove ends are connected to each other, and the limiter 412 slides in the guide groove 411. The first groove section is the starting position of the guide groove 411, and the second groove end 411b is the end position of the guide groove 411. The limiter 412 on each test probe mechanism 20 slides back and forth between the first groove end 411a and the second groove end 411b of the corresponding guide groove 411. It can be understood that when the limiter 412 is at the first groove end 411a, the test probe mechanism 20 is in the first position on the fixing mechanism 10, and when the limiter 412 is at the second groove end 411b, the test probe mechanism 20 is in the second position on the fixing mechanism 10. Here, the test probe mechanism 20 can perform OCV testing on the incoming battery cells 400 at the first position, the second position, or an intermediate position between the first position and the second position.

[0189] The driving member 42 includes a first fixing portion 421, a second fixing portion 422, a screw portion 423 whose two ends are respectively connected to the first fixing portion 421 and the second fixing portion 422, and a nut portion 424 threadedly connected to the screw portion 423. The first fixing portion 421 and the second fixing portion 422 are arranged on the fixing mechanism 10 at intervals along the second direction Z, and the nut portion 424 is fixedly connected to the synchronizer 41.

[0190] The first fixing portion 421 and the second fixing portion 422 are components whose relative positions are fixed in the driving member 42. The first fixing portion 421 and the second fixing portion 422 can be block structures or strip structures, and the two are used to be fixed to the fixing mechanism 10. For example, the first fixing portion 421 and the second fixing portion 422 can be connected to the fixing mechanism 10 by fasteners such as screws and pins.

[0191] The screw portion 423 has an external thread that is threadably engaged with the nut portion 424. The screw portion 423 rotates about its own axis and engages with the nut portion 424 during the rotation process, connecting the nut portion 424 to the synchronizer 41, so that the synchronizer 41 reciprocates in the second direction Z driven by the nut portion 424.

[0192] The nut portion 424 is a structural member with an internal thread, which is threadedly engaged with the screw portion 423. The nut portion 424 can be a non-standard nut or a block with an internal thread. While being engaged with the screw portion 423, it also needs to be connected to the synchronizer 41.

[0193] Here, the screw portion 423 can be manually rotated about its own axis, or can be automatically rotated about the axis by mechanical transmission. For example, when the screw portion 423 rotates clockwise about the axis, the nut portion 424 drives the synchronizer 41 to move in the positive direction of the second direction Z. And, when the screw portion 423 rotates counterclockwise about the axis, the nut portion 424 drives the synchronizer 41 to move in the negative direction of the second direction Z.

[0194] In this arrangement, the screw rod portion 423 rotates around the axis relative to the first fixed portion 421 and the second fixed portion 422, and the nut portion 424 is threadedly engaged with the screw rod portion 423. Since the nut portion 424 is connected to the synchronizer 41, the nut portion 424 moves back and forth along the axial direction of the screw rod portion 423, and also drives the synchronizer 41 to move back and forth in the second direction Z.

[0195] The fixing mechanism 10 is slidably connected to the bracket 50 and can slide relative to the bracket 50 along the second direction Z.

[0196] Here, the bracket 50 plays a bearing role, satisfying the freedom of movement of each test probe mechanism 20 in the second direction Z. The sliding form between the bracket 50 and the fixing mechanism 10 can be direct sliding, indirect sliding, or partial direct sliding and partial indirect sliding.

[0197] The fixed end of the power mechanism 60 is connected to the bracket 50 , and the output end of the power mechanism 60 is connected to the fixing mechanism 10 . The power mechanism 60 drives the fixing mechanism 10 to reciprocate in the second direction Z relative to the bracket 50 .

[0198] It can be understood that the power mechanism 60 is used to provide a power source to drive the fixing mechanism 10 to move relative to the bracket 50 in the second direction Z, and the movement process is more labor-saving.

[0199] Here, the power mechanism 60 includes but is not limited to a screw mechanism, a cylinder mechanism, a lifting mechanism, a servo motor, and the like.

[0200] The test probe mechanism 20 includes a connector 21 slidably connected to the fixing mechanism 10 and two test pieces 22 connected to one end of the connector 21 away from the fixing mechanism 10. At least one of the test pieces 22 is slidably connected to the connector 21 along a third direction Y, which is perpendicular to the first direction X.

[0201] It can be understood that the third direction Y is the direction in which the electrode terminals 401 on the battery cells 400 are spaced apart. Since the spacing between the electrode terminals 401 on battery cells 400 of different sizes varies, one of the test pieces 22 can be selected to slide relative to the connecting piece 21 along the third direction Y, or both test pieces 22 can be selected to slide relative to the connecting piece 21 along the third direction Y to adapt to battery cells 400 with different spacing between the electrode terminals 401.

[0202] The connecting member 21 includes a vertical portion 211 slidably connected to the fixing mechanism 10 and a horizontal portion 212 perpendicularly connected to the vertical portion 211 . Each test piece 22 is sleeved on the horizontal portion 212 and slides relative to the horizontal portion 212 .

[0203] The test piece 22 includes a test body 221 and a probe 222 provided on the test body 221. The test body 221 is slidably connected to the connector 21. One end of the probe 222 is used to abut against the electrode terminal 401 of the battery cell 400, and the other end is used to electrically connect to an external test device.

[0204] Optionally, there are two probes 222, and the two probes 222 are spaced apart along the first direction X. The distance between the two probes 222 is smaller than the width of the electrode terminal 401 of the battery cell 400 in the first direction X. In this way, when the two probes 222 are in abutment contact with the electrode terminal 401 of the battery cell 400, both probes 222 can complete the abutment action.

[0205] The test probe mechanism 20 further includes a locking member 23 for locking the test piece 22 . The locking member 23 passes through the test piece 22 and can abut against the connecting member 21 .

[0206] It can be understood that the locking member 23 is used to lock the test member 22 so that the test member 22 slides relative to the connecting member 21. Specifically, the locking member 23 is provided through the test member 22 and remains relatively stationary with the connecting member 21 by abutting against it.

[0207] For example, as shown in FIG6 , the locking member 23 includes a locking bolt 231 . A threaded hole is provided on the test member 22 , and the locking bolt 231 is screwed into the threaded hole until it abuts against the connecting member 21 to prevent the test member 22 from sliding relative to the connecting member 21 .

[0208] For example, as shown in FIG6 , the locking member 23 includes a push screw 232. Similarly, a threaded hole is formed in the test member 22, and the push screw 232 is screwed into the threaded hole until it abuts against the connecting member 21, thereby preventing the test member 22 from sliding relative to the connecting member 21. Unlike the locking bolt 231, the push screw 232 can be completely screwed into the test member 22, that is, it is externally hidden inside the test member 22.

[0209] Please refer to FIG. 7 and FIG. 8 , an embodiment of the present application further provides a battery production line 1000 , including the above-mentioned detection device 100 .

[0210] The battery production line 1000 provided in the embodiment of the present application, based on the above-mentioned detection device 100, has higher production efficiency.

[0211] As will be appreciated, the battery production line 1000 further includes a conveyor mechanism 200 for transferring battery cells 400 to be tested to a testing station. Furthermore, the battery production line 1000 further includes a transfer mechanism 300 for removing battery cells 400 from the conveyor mechanism and transferring them to the testing device 100.

[0212] The above are only preferred embodiments of the present application and are not intended to limit the present application. Any modifications, equivalent replacements, and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A detection device for detecting each incoming battery cell, characterized in that: include: Fixed mechanism; as well as, A plurality of test probe mechanisms are provided, each of the test probe mechanisms being slidably connected to the fixing mechanism side by side along a first direction.

2. The detection device according to claim 1, characterized in that: Each of the test probe mechanisms can independently slide relative to the fixing mechanism along the first direction.

3. The detection device according to claim 1, characterized in that: At least a portion of the test probe mechanism synchronously slides relative to the fixing mechanism along the first direction.

4. The detection device according to claim 3, characterized in that: Each of the test probe mechanisms synchronously slides relative to the fixing mechanism along the first direction and is arranged at equal distances.

5. The detection device according to any one of claims 1 to 4, characterized in that: The detection device comprises a sliding mechanism, which comprises a guide rail arranged on the fixing mechanism and a slider arranged on the corresponding test probe mechanism, and the slider is slidably connected to the guide rail.

6. The detection device according to claim 3 or 4, characterized in that: The detection device also includes a synchronization mechanism, which includes a synchronization member connected to each of the test probe mechanisms and a driving member that drives the synchronization member to move relative to the fixing mechanism. The synchronization member drives each of the test probe mechanisms to slide synchronously during the movement relative to the fixing mechanism.

7. The detection device according to claim 6, characterized in that: The synchronizer is slidably connected to the fixing mechanism along a second direction, a plurality of guide grooves corresponding to the test probe mechanisms are formed on the synchronizer, and a limiter slidably connected to the guide groove is provided on the test probe mechanism, and the second direction is perpendicular to the first direction.

8. The detection device according to claim 7, characterized in that: The guide groove has a first groove end and a second groove end, and the limiting member slides back and forth between the first groove end and the second groove end.

9. The detection device according to claim 8, characterized in that: The distance between any two adjacent guide grooves of the first groove ends is equal; and / or the distance between any two adjacent guide grooves of the second groove ends is equal.

10. The detection device according to any one of claims 7 to 9, characterized in that: The driving member includes a first fixing portion, a second fixing portion, a screw portion connected to the first fixing portion and the second fixing portion at both ends respectively, and a nut portion threadedly connected to the screw portion, the first fixing portion and the second fixing portion are arranged on the fixing mechanism at intervals along the second direction, and the nut portion is fixedly connected to the synchronizer.

11. The detection device according to claim 10, characterized in that: Each of the guide grooves is arranged in mirror symmetry with respect to the central axis of the screw rod portion.

12. The detection device according to any one of claims 1 to 11, characterized in that: The detection device also includes a bracket, and the fixing mechanism is slidably connected to the bracket and can slide relative to the bracket along a second direction.

13. The detection device according to claim 11, characterized in that: The detection device further comprises a power mechanism, a fixed end of the power mechanism is connected to the bracket, and an output end of the power mechanism is connected to the fixed mechanism, and the power mechanism drives the fixed mechanism to reciprocate relative to the bracket in the second direction.

14. The detection device according to any one of claims 1 to 13, characterized in that: The test probe mechanism comprises a connecting piece slidably connected to the fixing mechanism and two testing pieces connected to one end of the connecting piece away from the fixing mechanism.

15. The detection device according to claim 14, characterized in that: At least one of the test pieces is slidably connected to the connection piece along a third direction, and the third direction is perpendicular to the first direction.

16. The detection device according to claim 14 or 15, characterized in that: The connecting member comprises a vertical portion slidably connected to the fixing mechanism and a horizontal portion perpendicularly connected to the vertical portion, and each of the test pieces is sleeved on the horizontal portion and slides relative to the horizontal portion.

17. The detection device according to any one of claims 14 to 16, characterized in that: The test piece includes a test body and a probe disposed on the test body. The test body is slidably connected to the connector. One end of the probe is used to abut against the electrode terminal of the battery cell, and the other end is used to electrically connect to an external test device.

18. The detection device according to claim 17, characterized in that: The number of the probes includes at least two, and the probes are arranged at intervals along the first direction.

19. The detection device according to any one of claims 14 to 18, characterized in that: The test probe mechanism further includes a locking member for locking the test piece, wherein the locking member is disposed through the test piece and can abut against the connecting member.

20. A battery production line, characterized in that: A detection device comprising any one of claims 1 to 19.

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