Battery monomer test probe mechanism, detection device and battery production line

Abstract

The invention provides a battery monomer test probe mechanism (100), a detection device (1000) and a battery production line (10000), the battery monomer test probe mechanism (100) comprises a connecting piece (10) and a plurality of test pieces (20), the connecting piece (10) is used for being connected with a peripheral structure; the at least one test piece (20) is slidably connected to the connecting piece (10) along the first direction X. And each test piece (20) corresponds to an electrode terminal (4001) of the battery monomer (4000), and performs related data acquisition on the corresponding electrode terminal (4001). For battery monomers (4000) of different specifications, one or more test pieces (20) can be moved relative to the connecting piece (10) in the first direction X to adjust the distance between the test pieces (20), so that the test requirement of the distance between the electrode terminals (4001) of the battery monomers (4000) of different specifications is met, and the test efficiency is improved.

Description

Battery cell test probe mechanism, detection device and battery production line Technical Field

[0001] The present application relates to the technical field of OCV detection, and in particular to a battery cell test probe mechanism, a detection device having the battery cell test probe, 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, when faced with different battery cell specifications, especially when the inter-pole spacing varies, how to quickly respond and adapt to the corresponding test conditions becomes a pressing issue.

[0004] Application Contents

[0005] The purpose of the embodiments of the present application is to provide a battery cell test probe mechanism, a detection device and a battery production line, aiming to improve the technical problem of low detection efficiency of the test probe mechanism 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 battery cell testing probe mechanism for detecting electrode terminals of incoming battery cells, comprising:

[0008] A connector, used for connecting to an external structure;

[0009] A plurality of test pieces, at least one of which is slidably connected to the connecting piece 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] In the battery cell testing probe mechanism provided in the embodiments of the present application, each test piece corresponds to an electrode terminal of a battery cell and collects relevant data from the corresponding electrode terminal. When testing battery cells of different specifications, that is, when the spacing between the electrode terminals on the battery cells varies, one or more of the test pieces can be moved relative to the connector in a first direction to adjust the spacing between the test pieces. This allows for testing of the spacing between the electrode terminals of battery cells of varying specifications, thereby improving testing efficiency.

[0012] In some embodiments, at least one of the test pieces is sleeved on the connecting piece and slides relative to the connecting piece.

[0013] By adopting the above technical solution, there is sliding friction between the test piece and the connecting piece, and relative sliding is achieved by utilizing the sleeve connection relationship between the two. The overall structure is simple and the volume is compact.

[0014] In some embodiments, the battery cell test probe mechanism further includes a slide rail mechanism, and at least one of the test pieces is slidably connected to the connection piece via the slide rail mechanism.

[0015] By adopting the above technical solution, the test piece slides relative to the connecting piece through the additional slide rail mechanism, the sliding stability is higher, and the wear of the test piece and the connecting piece caused by sliding can be reduced.

[0016] In some embodiments, the slide rail mechanism includes a guide rail provided on the connecting member and a slider provided on the test member, and the slider is slidably connected to the guide rail.

[0017] By adopting the above technical solution, the slider is used to slide on the guide rail to achieve the sliding of the test piece relative to the connecting piece.

[0018] 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 pole of the battery cell, and the other end is used to electrically connect to an external test device.

[0019] By adopting the above technical solution, the probe moves with the test body under the drive of the test body to perform abutment testing on the pole on the corresponding battery cell.

[0020] In some embodiments, the test body includes a main body portion slidably connected to the connecting member and a supporting portion provided on the main body portion and used to support the probe. Along the second direction, the supporting portion and the main body portion are stepped, the supporting portion has a first end, and the main body portion has a second end. The first end protrudes from the second end. The probe is provided through the first end of the supporting portion to the outside, and the second direction is perpendicular to the first direction.

[0021] By adopting the above technical solution, the main body plays the role of sliding connection with the connecting piece, and the bearing portion plays the role of bearing and fixing the probe. In addition, in the second direction, the bearing portion and the main body are arranged in a stepped manner, and the first end portion protrudes from the second end portion, so that the bearing portion and the main body portion enclose an avoidance space, thereby reducing the possibility of the main body touching or squeezing the battery cell during the test.

[0022] In some embodiments, the probe makes soft contact with the electrode terminal of the battery cell.

[0023] By adopting the above technical solution, soft contact is relative to hard contact. Soft contact can reduce the damage caused by the collision between the probe and the pole, and play a protective role for both the probe and the pole.

[0024] In some embodiments, the probe includes a first tube segment, a second tube segment passing through the first tube segment, and an elastic member disposed in the first tube segment, one end of the elastic member abuts against the inner wall of the first tube segment and the other end abuts against the end of the second tube segment.

[0025] By adopting the above technical solution, under the elastic expansion and contraction of the elastic member, the second pipe section can be telescopically moved relative to the first pipe section, providing the prerequisite for soft contact.

[0026] In some embodiments, the first tube section has an interference fit with the load-bearing portion, and the second tube section has a clearance fit with the load-bearing portion and is movable relative to the load-bearing portion.

[0027] By adopting the above technical solution, the first tube body is fixedly connected to the bearing portion and remains stationary, while the second tube section can move relative to the bearing portion, thereby achieving soft contact with the pole of the battery cell.

[0028] In some embodiments, the bearing portion includes a first block connected to the main body and a second block stacked on the first block along the second direction, the first tube segment has an interference fit with the first block, and the second tube segment has a clearance fit with the second block.

[0029] By adopting the above technical solution, the bearing part is split into two blocks, which facilitates the installation of the probe. Specifically, the first tube section of the probe is first fixed to the first block, and then the second block is stacked on the first block, and the second tube section is passed through the second block. In this way, the second tube section can move telescopically relative to the second block.

[0030] In some embodiments, the second block has the first end, the second block is arranged in a stepped manner with the first block, and the second block is arranged toward the side wall of the main body and away from the main body.

[0031] By adopting the above technical solution, in the second direction, the second block protrudes outward relative to the main body, that is, the side wall of the second block, the end face of the first block and the surface of the first end of the main body form an avoidance space.

[0032] In some embodiments, there are multiple probes, and each probe is disposed on the test body at intervals along a third direction, and the third direction is perpendicular to the first direction.

[0033] By adopting the above technical solution, arranging a plurality of probes at intervals in the third direction can increase the contact area with the poles of the battery cells and improve the test accuracy.

[0034] In some embodiments, the battery cell test probe mechanism includes a locking structure, and the locking structure is used to limit the sliding of the test piece relative to the connecting piece.

[0035] By adopting the above technical solution, the locking structure is used to achieve spatial position stability of the test piece relative to the connecting piece, which can also improve the test accuracy.

[0036] In some embodiments, the locking structure includes a locking screw threadedly connected to the test piece, and one end of the locking screw abuts against the connecting piece.

[0037] By adopting the above technical solution, the locking screw is screwed to push against the connecting piece.

[0038] In some embodiments, the locking structure includes a top screw threadedly connected to the test piece, one end of the top screw abuts against the connector, and the other end of the top screw is not higher than the surface of the connector.

[0039] By adopting the above technical solution, the top screw is screwed to push against the connecting piece, and at the same time, the top screw can be received in the test piece.

[0040] In some embodiments, the battery cell test probe mechanism further includes a limiting structure provided on the connecting member, wherein the limiting structure is used to limit a sliding stroke of the test member relative to the connecting member.

[0041] By adopting the above technical solution, the test piece is blocked by the limiting structure to obtain a sliding stroke of the test piece relative to the connecting piece.

[0042] In some embodiments, the limiting structure includes a limiting block provided at an end portion of the connecting member.

[0043] By adopting the above technical solution, the test piece is blocked by the limit block to obtain the maximum sliding stroke of the test piece relative to the connecting piece.

[0044] In a second aspect, an embodiment of the present application further provides a detection device comprising a plurality of the battery cell test probe mechanisms described above.

[0045] The detection device provided in the embodiment of the present application, based on the above-mentioned multiple battery cell test probe mechanisms, can adapt to the poles of battery cells of different specifications.

[0046] In a third aspect, an embodiment of the present application further provides a battery production line, comprising the detection device described above.

[0047] 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

[0048] 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.

[0049] FIG1 is a schematic structural diagram of a detection device provided in some embodiments of the present application;

[0050] FIG2 is a schematic structural diagram of a battery cell test probe mechanism provided in some embodiments of the present application;

[0051] FIG3 is a left side view of a connector and a test piece of a battery cell test probe mechanism provided in some embodiments of the present application;

[0052] FIG4 is an exploded view of a carrying portion of a battery cell test probe mechanism provided in some embodiments of the present application;

[0053] FIG5 is an exploded view of a probe of a battery cell testing probe mechanism provided in some embodiments of the present application;

[0054] FIG6 is a schematic structural diagram of a battery production line provided in some embodiments of the present application;

[0055] FIG7 is a schematic structural diagram of a battery cell provided in some embodiments of the present application.

[0056] : Among them, the figure marks in the figure are: 100, battery cell test probe mechanism; 10, connecting piece; 20, test piece; 21, test body; 22, probe; 211, main body; 212, bearing part; 212a, first end; 211a, second end; 221, first pipe section; 222, second pipe section; 223, elastic member; 2121, first block; 2122, second block; 30, locking structure; 31, locking screw; 32, top screw; 40, limiting structure; 41, limiting block; 50, sliding rail mechanism; 51, guide rail; 52, slider; first direction X; second direction Z; third direction Y; 1000, detection device; 200, fixing mechanism; 10000, battery production line; 2000, conveying mechanism; 3000, transfer mechanism; 4000, battery cell; 4001, electrode terminal. DETAILED DESCRIPTION

[0057] 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.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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.

[0062] In this application, "and / or" is simply a way to describe the relationship between related objects, indicating that three possible relationships exist. For example, "A and / or B" can mean: A exists alone, A and B exist simultaneously, or B exists alone. Additionally, the character " / " in this document generally indicates that the related objects are in an "or" relationship.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] Typically, batteries undergo OCV testing in an assembly line manner, that is, the batteries are placed in batches on a transmission line, and OCV testing of dozens or even more batteries can be completed at a time. However, due to the differences in battery size specifications, the spacing between the electrode terminals of the batteries is also set differently. Therefore, when performing OCV testing on batches of batteries of different sizes and specifications, it is necessary to continuously adjust the distance between the test probes to adapt. For example, the spacing between the electrode terminals of the current batch of batteries is Amm, and each battery is placed side by side on a tray at a certain spacing to complete the OCV testing process; while the spacing between the electrode terminals of the next batch of batteries is Bmm, 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 with different spacing between the electrode terminals. How to quickly respond and adapt to the corresponding test conditions needs to be solved urgently.

[0067] The present application provides a battery cell test probe mechanism that can be used to perform OCV testing on the electrode terminals of batches of incoming battery cells. The battery cell test probe mechanism includes a connector and multiple test pieces, wherein the connector serves as a connector and a load-bearing component for connection to each test piece. At least one test piece can slide relative to the connector along a first direction, thereby changing the spacing between it and the other test pieces to meet the different testing requirements for the spacing of the electrode terminals of battery cells in different batches, achieving a rapid effect and improving detection efficiency.

[0068] Please refer to Figures 1, 2 and 7. Figure 1 is a structural diagram of the detection device provided in an embodiment of the present application, Figure 2 is a structural diagram of the battery cell test probe mechanism provided in an embodiment of the present application, and Figure 7 is a structural diagram of the battery cell provided in an embodiment of the present application.

[0069] The detection device 1000 includes a plurality of battery cell test probe mechanisms 100 and fixing mechanisms 200 , wherein the fixing mechanisms 200 are arranged side by side on each battery cell test probe mechanism 100 along a preset direction.

[0070] Here, the preset direction may be the arrangement direction of the battery cells 4000 to be tested. Each battery cell testing probe mechanism 100 corresponds to one battery cell 4000 and completes the test by abutting against the electrode terminal 4001 .

[0071] The battery cell testing probe mechanism 100 is used to test the electrode terminals 4001 of incoming battery cells 4000 and includes a connector 10 and a plurality of test pieces 20. At least one test piece 20 is slidably connected to the connector 10 along a first direction X.

[0072] It can be understood that the connector 10 connects and supports each test piece 20. When installed, the connector 10 can remain fixed or connected to an external drive device to obtain corresponding spatial freedom. For example, the connector 10 can be a similar block structure or strip structure, which can be connected to an external drive device, including but not limited to a telescopic cylinder, a screw mechanism, a lifting mechanism, a rotating mechanism, etc. In this way, the block structure or strip structure can obtain spatial freedom of movement or rotation.

[0073] The test piece 20 is used to abut against the electrode terminals 4001 of the battery cell 4000 to collect electrical signals. The test piece 20 should be electrically connected to an external electrical testing device to transmit the collected electrical signals to the external electrical testing device. Specifically, during testing, each test piece 20 abuts against each electrode terminal 4001 of the battery cell 4000 in sequence. Here, taking two electrode terminals 4001 as an example, the positive and negative electrodes of the battery cell 4000 are spaced apart. In this case, there are two test pieces 20, and at least one of the test pieces 20 is capable of sliding relative to the connector 10 along the first direction X to accommodate the variations in the spacing between the positive and negative electrodes of different batches of battery cells 4000. Of course, a battery cell 4000 may have more than two electrode terminals 4001. In this case, the number of test pieces 20 can be increased as the number of electrode terminals 4001 increases.

[0074] Here, the first direction X is the direction in which the electrode terminals 4001 on the battery cells 4000 are spaced apart. Since the spacing between the electrode terminals 4001 on battery cells 4000 of different sizes varies, one of the test pieces 20 can be selected to slide relative to the connector 10 along the first direction X, or multiple test pieces 20 can be selected to slide relative to the connector 10 along the first direction X to adapt to battery cells 4000 with different spacing between the electrode terminals 4001.

[0075] Here, the sliding of the test piece 20 relative to the connecting piece 10 along the first direction X refers to sliding relative to the connecting piece 10 along the positive direction or the negative direction of the first direction X.

[0076] The sliding form between each test piece 20 and the connecting piece 10 can be direct sliding, indirect sliding, or part direct sliding and part indirect sliding.

[0077] For example, a guide structure such as a slide groove or a slide rail is provided on the connecting member 10, and a sliding structure adapted to the guide mechanism is provided on the test piece 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 piece 20 can slide on the connecting member 10.

[0078] Alternatively, each test piece 20 is further slidably connected to the connecting member 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 connecting member 10 along the first direction X, and each test piece 20 is slidably connected to the guide rail via the slider to meet the sliding requirement relative to the connecting member 10.

[0079] In the battery cell test probe mechanism 100 provided in the embodiment of the present application, each test piece 20 corresponds to an electrode terminal 4001 of a battery cell 4000 and collects relevant data from the corresponding electrode terminal 4001. When dealing with battery cells 4000 of different specifications, that is, when the spacing between the electrode terminals 4001 on the battery cells 4000 varies, one or more of the test pieces 20 can be moved relative to the connector 10 in a first direction X to adjust the spacing between the test pieces 20, thereby meeting the testing requirements for the spacing between the electrode terminals 4001 of battery cells 4000 of different specifications and thereby improving testing efficiency.

[0080] Referring to FIG. 2 , in some embodiments, at least one testing piece 20 is sleeved on the connecting piece 10 and slides relative to the connecting piece 10 .

[0081] It is understandable that in this embodiment, at least one test piece 20 is directly slidably connected to the connecting piece 10. Specifically, a through hole is provided on the current test piece 20, the hole shape of the through hole being adapted to the outer shape of the connecting piece 10, and the connecting piece 10 can pass through the through hole to be slidably connected to the test piece 20.

[0082] For example, the connecting member 10 is a strip-shaped structure, and the test piece 20 is provided with a through hole with a square cross-section. The square through hole can be adapted to the strip-shaped connecting member 10 .

[0083] With such arrangement, there is sliding friction between the test piece 20 and the connecting piece 10, and relative sliding is achieved by utilizing the sleeve-type connection between the two. The overall structure is simple and the volume is compact.

[0084] Referring to FIG. 3 , in some embodiments, the battery cell testing probe mechanism 100 further includes a slide rail mechanism 50 , and at least one testing piece 20 is slidably connected to the connecting piece 10 via the slide rail mechanism 50 .

[0085] It is understood that in this embodiment, at least one test piece 20 is indirectly slidably connected to the connector 10. That is, a sliding rail mechanism 50 is added to the two to achieve the sliding connection. The sliding rail mechanism 50 should include two parts: a guide portion and a sliding portion. Depending on actual usage requirements, the guide portion is provided in one of the test piece 20 and the connector 10, and the sliding portion is provided in the other. The sliding portion slides on the guide portion to achieve the connection.

[0086] With such arrangement, the test piece 20 slides relative to the connecting piece 10 via the additional slide rail mechanism 50 , which improves the sliding stability and reduces the wear of the test piece 20 and the connecting piece 10 caused by sliding.

[0087] Referring to FIG. 2 , in some embodiments, the slide rail mechanism 50 includes a guide rail 51 disposed on the connecting member 10 and a slider 52 disposed on the testing member 20 , and the slider 52 is slidably connected to the guide rail 51 .

[0088] Specifically, the guide rail 51 is arranged on the connecting member 10 along the first direction X, and a slider 52 is provided on at least one test piece 20 , and the slider 52 is slidably connected to the guide rail 51 .

[0089] With such an arrangement, the slider 52 in the slide rail mechanism 50 slides in coordination with the guide rail 51 , so that the test piece 20 can slide relative to the connection along the first direction X.

[0090] Please refer to Figure 2. In some embodiments, the test piece 20 includes a test body 21 and a probe 22 provided on the test body 21. The test body 21 is slidably connected to the connector 10. One end of the probe 22 is used to abut against the pole of the battery cell 4000, and the other end is used to electrically connect to an external test device.

[0091] It can be understood that the test body 21 plays a role in carrying the probe 22 , and the probe 22 moves with the test body 21 to adapt to the test requirements of the battery cells 4000 with different intervals between the electrode terminals 4001 .

[0092] Here, the shape structure of the test body 21 includes but is not limited to a straight-line structure, an L-shaped structure, and the like.

[0093] With such configuration, the probe 22 moves along with the test body 21 under the drive of the test body 21 to perform abutment testing on the pole on the corresponding battery cell 4000 .

[0094] Please refer to Figure 2. In some embodiments, the test body 21 includes a main body 211 that is slidably connected to the connector 10 and a carrying portion 212 provided on the main body 211 and used to carry the probe 22. Along the second direction Z, the carrying portion 212 and the main body 211 are stepped. The carrying portion 212 has a first end 212a, and the main body 211 has a second end 211a. The first end 212a protrudes from the second end 211a. The probe 22 passes through the first end 212a of the carrying portion 212 to the outside. The second direction Z is perpendicular to the first direction X.

[0095] Here, the sliding connection between the main body 211 and the connector 10 can be a direct sliding connection, an indirect sliding connection, or a combination of the two sliding connection methods. The main function of the main body 211 is to support and connect the load.

[0096] The main function of the carrying portion 212 is to carry the probe 22 and drive the probe 22 to move in the first direction X.

[0097] For example, both the main body portion 211 and the bearing portion 212 may be block structures, which are more convenient to process and connect.

[0098] The second direction Z is perpendicular to the first direction X. When the electrode terminals 4001 are disposed on the end faces of the battery cells 4000 where the thickness and length are located, the first direction X may be the thickness direction or the length direction of the incoming battery cells 4000; then, the second direction Z is the width direction of the battery cells 4000. Alternatively, when the electrode terminals 4001 are disposed on the end faces where the width and length are located, the first direction X may be the width direction or the length direction of the incoming battery cells 4000, and the second direction Z may be the thickness direction of the battery cells 4000. Alternatively, when the electrode terminals 4001 are disposed on the end faces where the thickness and width are located, the first direction X may be the thickness direction or the width direction of the incoming battery cells 4000, and the second direction Z may be the length direction of the battery cells 4000.

[0099] The first end 212a of the support portion 212 is the end away from the main body 211, and the second end 211a of the main body 211 is oriented in the same direction as the first end 212a. In the second direction Z, the first end 212a of the support portion 212 protrudes from the second end of the main body 211, so that the support portion 212 and the main body 211 are arranged in a stepped manner. In addition, the probe 22 is provided through the first end 212a of the support portion 212 to the outside. Optionally, the probe 22 is provided through the support portion 212 along the second direction Z and extends from the first end 212a to the outside.

[0100] In this arrangement, the main body 211 serves to be slidably connected to the connector 10, and the supporting portion 212 serves to support and fix the probe 22. Moreover, in the second direction Z, the supporting portion 212 and the main body 211 are arranged in a stepped manner, and the first end portion 212a protrudes from the second end portion 211a, so that the supporting portion 212 and the main body 211 are enclosed to form an avoidance space, thereby reducing the main body 211 from touching or squeezing the battery cell 4000 during the test.

[0101] In some embodiments, the probe 22 makes soft contact with the electrode terminal 4001 of the battery cell 4000 .

[0102] It can be understood that soft contact is relative to hard contact. Soft contact can reduce damage caused by abutment and collision between the probe 22 and the pole, thereby protecting both the probe 22 and the pole.

[0103] For example, the probe 22 itself has elasticity. When it comes into direct contact with the electrode terminal 4001 of the battery cell 4000 , the probe 22 will be compressed in the direction of the electrode terminal 4001 , thereby playing a buffering role.

[0104] For example, a buffer is provided at the end of the incoming battery cell 4000 away from the electrode terminal 4001, so that the battery cell 4000 has freedom of movement in the second direction Z. In this way, when the probe 22 abuts against the electrode terminal 4001 of the battery cell 4000, the buffer plays a role in buffering and releasing force. Here, the buffer includes but is not limited to a silicone pad, a foam block, a rubber layer, etc.

[0105] Please refer to Figure 5. In a specific embodiment, the probe 22 includes a first tube section 221, a second tube section 222 passing through the first tube section 221, and an elastic member 223 provided in the first tube section 221. One end of the elastic member 223 abuts against the inner wall of the first tube section 221 and the other end abuts against the end of the second tube section 222.

[0106] Here, the first tube section 221 is used for electrical connection to external testing equipment, and the second tube section 222 is used to abut the electrode terminal 4001 of the battery cell. The elastic member 223 enables the second tube section 222 to move axially relative to the first tube section 221. The elastic member 223 includes, but is not limited to, a spring, a silicone pad, a foam block, a rubber layer, etc.

[0107] With such arrangement, under the elastic expansion and contraction of the elastic member 223 , the second tube section 222 can be telescopically moved relative to the first tube section 221 , providing the prerequisite for soft contact.

[0108] Optionally, a convex edge is provided on the inner wall of the first pipe section 221 , one end of the elastic member 223 abuts against the convex edge, and the other end abuts against the end of the second pipe section 222 .

[0109] In some embodiments, the first tube section 221 has an interference fit with the bearing portion 212 , and the second tube section 222 has a clearance fit with the bearing portion 212 and is movable relative to the bearing portion 212 .

[0110] Here, the first tube segment 221 is inserted into the support portion 212 by extrusion or insertion. Specifically, the support portion 212 has a corresponding first hole structure, which forms an interference fit with the first tube segment 221. The second tube segment 222 is capable of telescopic movement relative to the support portion 212. Specifically, the support portion 212 has a corresponding second hole structure, which forms a clearance fit with the second tube segment 222, and this clearance fit enables relatively smooth relative movement between the two.

[0111] With this arrangement, the first tube body is fixedly connected to the supporting portion 212 and remains stationary, while the second tube section 222 can move relative to the supporting portion 212 , thereby achieving soft contact with the pole of the battery cell 4000 .

[0112] Please refer to Figure 4. In some embodiments, the supporting portion 212 includes a first block 2121 connected to the main body 211 and a second block 2122 stacked on the first block 2121 along the second direction Z. The first tube segment 221 has an interference fit with the first block 2121, and the second tube segment 222 has a clearance fit with the second block 2122.

[0113] It is understood that the first pipe segment 221 is inserted into the first block 2121 by extrusion or insertion. Specifically, the first block 2121 defines a corresponding first hole structure, which forms an interference fit with the first pipe segment 221. The second pipe segment 222 is capable of telescopic movement relative to the second block 2122. Specifically, the second block 2122 defines a corresponding second hole structure, which forms a clearance fit with the second pipe segment 222. This clearance fit enables relatively smooth relative movement between the two.

[0114] This arrangement splits the carrier portion 212 into two blocks, facilitating the installation of the probe 22. Specifically, the first tube section 221 of the probe 22 is first fixed to the first block 2121, and then the second block 2122 is stacked on the first block 2121, with the second tube section 222 passing through the second block 2122. In this way, the second tube section 222 can move telescopically relative to the second block 2122.

[0115] 2 , in some embodiments, the second block 2122 has a first end 212 a , the second block 2122 and the first block 2121 are arranged in a stepped manner, and the second block 2122 is arranged toward a sidewall of the main body 211 and away from the main body 211 .

[0116] It can be understood that in the second direction Z, the second block 2122 protrudes to the outside relative to the main body 211, that is, the side wall of the second block 2122, the end face of the first block 2121 and the surface of the first end 212a of the main body 211 form an avoidance space, which can adapt to the protruding structure on the battery cell 4000. At the same time, it can also avoid the second end 211a of the main body 211 from contacting the electrode terminal 4001 of the battery cell 4000.

[0117] Referring to FIG. 2 , in some embodiments, there are multiple probes 22 , and each probe 22 is disposed on the test body 21 at intervals along a third direction Y, which is perpendicular to the first direction X.

[0118] It can be understood that the third direction Y is the arrangement direction of the probes 22, and the third direction Y is also related to the arrangement of the incoming battery cells 4000. For example, when the electrode terminals 4001 of the incoming battery cells 4000 are arranged on the end faces of the battery cells 4000 corresponding to their thickness and length, the third direction Y may be the thickness direction or the length direction of the incoming battery cells 4000; or, when the electrode terminals 4001 of the incoming battery cells 4000 are arranged on the end faces of the battery cells 4000 corresponding to their width and length, the third direction Y may be the width direction or the length direction of the incoming battery cells 4000; or, when the electrode terminals 4001 of the incoming battery cells 4000 are arranged on the end faces of the battery cells 4000 corresponding to their thickness and width, the third direction Y may be the thickness direction or the width direction of the incoming battery cells 4000.

[0119] Furthermore, increasing the number of probes 22 can adapt to different width requirements of the electrode terminals 4001 in the third direction Y, thereby improving the accuracy of the test piece 20 in collecting the electrode terminals 4001 of the corresponding battery cells 4000.

[0120] Optionally, there are two probes 22, and the two probes 22 are spaced apart along the third direction Y. The distance between the two probes 22 is smaller than the width of the electrode terminal 4001 of the battery cell 4000 in the third direction Y. In this way, when the two probes 22 are in abutment contact with the electrode terminal 4001 of the battery cell 4000, both probes 22 can complete the abutment action.

[0121] In this manner, arranging a plurality of probes 22 spaced apart in the third direction Y can increase the contact area of ​​the electrode of the battery cell 4000 and improve the test accuracy.

[0122] Referring to FIG. 2 , in some embodiments, the battery cell test probe mechanism 100 includes a locking structure 30 , which is used to limit the sliding of the test piece 20 relative to the connector 10 .

[0123] It can be understood that the locking structure 30 is used to lock the test piece 20 to reduce the probability of relative sliding between the test piece 20 and the connecting piece 10.

[0124] With such a configuration, the locking structure 30 is utilized to achieve spatial position stability of the test piece 20 relative to the connecting piece 10 , which can also improve the test accuracy.

[0125] Optionally, the locking member is provided through the test member 20 and remains relatively stationary with the connecting member 10 by abutting against it.

[0126] Referring to FIG. 2 , in some embodiments, the locking structure 30 includes a locking screw 31 threadedly connected to the test piece 20 , and one end of the locking screw 31 abuts against the connecting piece 10 .

[0127] It can be understood that a threaded hole is provided on the test piece 20 , and the locking screw 31 is screwed into the threaded hole until it abuts against the connecting piece 10 to prevent the test piece 20 from sliding relative to the connecting piece 10 .

[0128] With this arrangement, the locking screw 31 is screwed to push against the connecting member 10 .

[0129] 2 , in some embodiments, the locking structure 30 includes a top screw 32 threadedly connected to the test piece 20 , one end of the top screw 32 abuts against the connector 10 , and the other end of the top screw 32 is no higher than the surface of the connector 10 .

[0130] Similarly, a threaded hole is formed in the test piece 20, and a push screw 32 is screwed into the threaded hole until it abuts against the connector 10, thereby preventing the test piece 20 from sliding relative to the connector 10. Unlike the locking screw 31, the push screw 32 can be completely screwed into the test piece 20, that is, it is externally hidden inside the test piece 20.

[0131] With such a configuration, the top screw 32 is screwed to push against the connector 10 . Meanwhile, the top screw 32 can be received in the test piece 20 , making the outer tube more concise.

[0132] Referring to FIG. 2 , in some embodiments, the battery cell test probe mechanism 100 further includes a limiting structure 40 disposed on the connector 10 . The limiting structure 40 is used to limit the sliding travel of the test piece 20 relative to the connector 10 .

[0133] It is understood that the limiting structure 40 includes, but is not limited to, a ridge, a bump, a plate, etc., and can block the test piece 20 from sliding relative to the connector 10. Typically, the position of the limiting structure 40 on the connector 10 corresponds to the maximum travel of the test piece 20 relative to the connector.

[0134] With this arrangement, the limiting structure 40 is used to block the test piece 20 to obtain a sliding stroke of the test piece 20 relative to the connecting piece 10 .

[0135] Referring to FIG. 2 , in a specific embodiment, the limiting structure 40 includes a limiting block 41 disposed at an end of the connecting member 10 .

[0136] With this arrangement, the limit block 41 is used to block the test piece 20 to obtain a maximum sliding stroke of the test piece 20 relative to the connecting piece 10 .

[0137] Please refer to FIG. 1 , an embodiment of the present application further provides a detection device 1000 , comprising the aforementioned plurality of battery cell test probe mechanisms 100 .

[0138] The detection device 1000 provided in the embodiment of the present application, based on the multiple battery cell test probe mechanisms 100 described above, can adapt to the poles of battery cells 4000 of different specifications.

[0139] Referring to FIG. 1 , the testing device 1000 further includes a fixing mechanism 200 , and each battery cell testing probe mechanism 100 is spaced apart on the fixing mechanism 200 .

[0140] It can be understood that the fixing mechanism 200 plays a role in connecting and supporting each battery cell test probe mechanism 100. When the fixing mechanism 200 is set, it can remain fixed or be connected to an external drive device to obtain corresponding spatial freedom. For example, the fixing mechanism 200 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 200 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.

[0141] Please refer to FIG. 6 and FIG. 7 , an embodiment of the present application further provides a battery production line 10000 , including the above-mentioned detection device 1000 .

[0142] The battery production line 10000 provided in the embodiment of the present application, based on the above-mentioned detection device 1000, has higher production efficiency.

[0143] As will be appreciated, the battery production line 10000 further includes a conveyor mechanism 2000 for transferring battery cells 4000 to be tested to a testing station. Furthermore, the battery production line 10000 further includes a transfer mechanism 3000 for removing battery cells 4000 from the conveyor mechanism 2000 and transferring them to the testing device 1000.

[0144] 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 battery cell test probe mechanism, used to detect the electrode terminals of incoming battery cells, characterized in that: include: A connecting piece, the connecting piece is used to connect with an external structure; A plurality of test pieces, at least one of which is slidably connected to the connecting piece along a first direction.

2. The battery cell test probe mechanism according to claim 1, characterized in that: At least one of the test pieces is sleeved on the connecting piece and slides relative to the connecting piece.

3. The battery cell test probe mechanism according to claim 1, characterized in that: The battery cell test probe mechanism further includes a slide rail mechanism, and at least one of the test pieces is slidably connected to the connection piece via the slide rail mechanism.

4. The battery cell testing probe mechanism according to claim 3, characterized in that: The slide rail mechanism comprises a guide rail arranged on the connecting member and a slider arranged on the testing member, and the slider is slidably connected to the guide rail.

5. The battery cell test probe mechanism according to any one of claims 1 to 4, characterized in that: The test piece includes a test body and a probe arranged on the test body, the test body is slidably connected to the connecting piece, one end of the probe is used to abut against the pole of the battery cell, and the other end is used to electrically connect with an external test device.

6. The battery cell testing probe mechanism according to claim 5, characterized in that: The test body includes a main body portion slidably connected to the connecting piece and a bearing portion provided on the main body portion and used for bearing the probe. Along the second direction, the bearing portion and the main body portion are stepped, the bearing portion has a first end, the main body portion has a second end, the first end protrudes from the second end, the probe is passed through the first end of the bearing portion to the outside, and the second direction is perpendicular to the first direction.

7. The battery cell testing probe mechanism according to claim 5 or 6, characterized in that: The probe makes soft contact with the pole of the battery cell.

8. The battery cell testing probe mechanism according to claim 7, characterized in that: The probe comprises a first tube section, a second tube section passing through the first tube section, and an elastic member arranged in the first tube section, wherein one end of the elastic member abuts against the inner wall of the first tube section and the other end abuts against the end of the second tube section.

9. The battery cell testing probe mechanism according to claim 8, characterized in that: The first pipe section is interference fit with the bearing portion, and the second pipe section is clearance fit with the bearing portion and can move relative to the bearing portion.

10. The battery cell testing probe mechanism according to claim 9, characterized in that: The bearing portion includes a first block connected to the main body and a second block stacked on the first block along the second direction. The first pipe section is interference fit with the first block, and the second pipe section is clearance fit with the second block.

11. The battery cell testing probe mechanism according to claim 10, characterized in that: The second block has the first end, the second block is arranged in a step with the first block, and the second block is arranged toward the side wall of the main body and away from the main body.

12. The battery cell testing probe mechanism according to any one of claims 5 to 11, characterized in that: There are multiple probes, and each of the probes is arranged on the test body at intervals along a third direction, and the third direction is perpendicular to the first direction.

13. The battery cell testing probe mechanism according to any one of claims 1 to 12, characterized in that: The battery cell test probe mechanism comprises a locking structure, and the locking structure is used to limit the sliding of the test piece relative to the connecting piece.

14. The battery cell testing probe mechanism according to claim 13, characterized in that: The locking structure includes a locking screw threadedly connected to the test piece, and one end of the locking screw abuts against the connecting piece.

15. The battery cell testing probe mechanism according to claim 13 or 14, characterized in that: The locking structure includes a top screw threadedly connected to the test piece, one end of the top screw abuts against the connecting piece, and the other end of the top screw does not protrude from the surface of the connecting piece.

16. The battery cell testing probe mechanism according to any one of claims 1 to 15, characterized in that: The battery cell test probe mechanism further comprises a limiting structure arranged on the connecting member, wherein the limiting structure is used for limiting the sliding stroke of the test member relative to the connecting member.

17. The battery cell testing probe mechanism according to claim 16, characterized in that: The limiting structure includes a limiting block arranged at the end of the connecting member.

18. A detection device, characterized in that: The invention comprises a plurality of battery cell testing probe mechanisms according to any one of claims 1 to 17.

19. A battery production line, characterized in that: Comprising the detection device as claimed in claim 18.

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