OCV detection method and detection equipment

Abstract

An OCV detection method and detection device (100), the OCV detection method comprising: carrying out OCV detection on a to-be-detected incoming material, transferring the to-be-detected battery incoming material to an OCV detection station (10a) for detection, and transferring all the incoming materials to a replacement station (10b) when the detection result is unqualified; oCV detection of the transfer incoming materials is carried out, OCV detection is carried out on the transfer battery incoming materials at the transfer station (20), and the number of the detected transfer battery incoming materials is one or more; the batteries are replaced for the first time, the OCV detection defective products in the to-be-detected battery incoming materials are transferred to the transfer station (20), and the OCV detection non-defective products in the transfer battery incoming materials are transferred to the replacement station (10b) to be replaced. Therefore, OCV detection can be carried out on a conventional battery incoming material to be detected, and OCV detection can also be carried out on a transfer battery incoming material, so that more batteries can be detected in unit time, and the detection efficiency is higher.

Description

OCV detection method and detection equipment Technical Field

[0001] The present application relates to the field of OCV detection technology, and in particular to an OCV detection method and a detection device capable of implementing the OCV detection method. 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] At present, the battery OCV testing process is as follows: batches of battery cells are transported to the OCV testing station by a transmission line. The battery cells of the first batch that have completed the test are stored in a transfer station. Then, the battery cells of the second batch are transmitted to the OCV testing station for testing. Once defective products are found, they are added to the second batch from the good products of the first batch in the transfer station to ensure that the battery cells of the second batch are all qualified, and then they are transmitted to the next station. As a result, the current OCV testing method has a relatively low detection efficiency.

[0004] Application Contents

[0005] The purpose of the embodiments of the present application is to provide an OCV detection method and detection device, aiming to improve the technical problem of low detection efficiency of the current OCV detection method.

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

[0007] In a first aspect, an embodiment of the present application provides an OCV detection method, comprising:

[0008] OCV testing of incoming materials to be tested: the incoming battery materials to be tested are transferred to the OCV testing station for testing. If the test results are unqualified, all incoming materials are transferred to the replacement station;

[0009] OCV testing of incoming transfer materials: OCV testing is performed on incoming transfer battery materials at the transfer station. The number of incoming transfer battery materials tested is one or more;

[0010] During a battery replacement, the OCV defective batteries in the incoming materials to be tested are transferred to the transfer station, and the OCV qualified batteries in the transfer process are transferred to the replacement station for replacement.

[0011] The above technical solutions in the embodiments of the present application have at least the following technical effects or advantages:

[0012] The OCV detection method provided in the embodiment of the present application performs OCV detection on incoming battery materials to be tested, and at the same time, also performs OCV detection on incoming battery materials in transit. Therefore, in the battery production process, it is equivalent to setting up two OCV detection stations, and the two OCV detection stations for batteries do not interfere with each other. In order to ensure that the incoming materials to be tested can be stably output into batches of good products, the good products in the incoming battery materials in transit can also be replaced with the defective products in the incoming battery materials to be tested. In this way, in addition to performing OCV detection on conventional incoming battery materials to be tested, OCV detection can also be performed on incoming battery materials in transit, so that more batteries can be tested per unit time, and the detection efficiency is higher.

[0013] In some embodiments, the OCV detection method further comprises:

[0014] The incoming materials to be tested are detected and the battery materials to be tested are transmitted to the replacement station for information collection. If the information collection results are unqualified, all incoming materials will stay at the replacement station.

[0015] By adopting the above technical solution, corresponding information detection can also be performed on the incoming battery materials to be tested. Batteries that fail the information collection will stay at the replacement station and wait to be replaced.

[0016] In some embodiments, the OCV detection method further comprises:

[0017] Transfer material information detection, collects information about the transfer battery materials at the transfer station, and the number of the collected transfer battery materials is one or more;

[0018] Secondary replacement of batteries: transfer unqualified products in the incoming materials to be tested to the transfer station, and transfer qualified products in the transfer batteries to the replacement station for replacement.

[0019] By adopting the above technical solution, corresponding information detection can also be performed on the transferred battery materials, and the transferred battery materials that pass the detection are used to replace the unqualified ones in the battery materials to be tested.

[0020] In some embodiments, in the step of OCV testing of the transferred incoming materials, defective transferred battery materials at the transfer station are classified and stored.

[0021] By adopting the above technical solution, defective incoming battery materials at the transfer station are classified to avoid confusion with untested batteries, and to facilitate replacement with defective incoming battery materials to be tested.

[0022] In some embodiments, in the step of detecting the transferred incoming materials information, defective transferred battery materials detected at the transfer station are classified and stored.

[0023] By adopting the above technical solution, defective incoming battery materials at the transfer station are classified to avoid confusion with untested batteries, and to facilitate replacement with defective incoming battery materials to be tested.

[0024] In a second aspect, an embodiment of the present application further provides a detection device for implementing the above-mentioned OCV detection method, the detection device comprising:

[0025] A transmission line, the transmission line is used to transmit incoming battery materials to be tested, the transmission line having an OCV testing station and a replacement station;

[0026] A transfer station storing a plurality of transfer battery materials;

[0027] A first OCV detection device, the first OCV detection device is used to perform OCV detection on incoming battery materials to be tested;

[0028] A second OCV detection device, the second OCV detection device is used to transfer incoming battery materials for OCV testing;

[0029] A transfer device, which is used to replace incoming materials between the battery cells to be tested and the incoming materials of the transfer batteries;

[0030] Among them, the first OCV detection device is arranged at the OCV detection station, the transfer device moves back and forth between the transfer station and the replacement station, and the second OCV detection device is arranged on the transfer device and can move back and forth between the transfer station and the replacement station.

[0031] The testing equipment provided in the embodiment of the present application transmits incoming battery materials to the OCV testing station and replacement work via a transmission line. The transfer station is used to store multiple incoming battery materials for transfer. The first OCV testing device performs OCV testing on each incoming battery material for test, and the second OCV testing device tests the incoming battery materials for transfer. The transfer device is used to realize the replacement of incoming battery materials between the incoming battery materials for test and the incoming battery materials for transfer. In this way, the transmission line can meet the requirements of rapid material discharge and higher efficiency.

[0032] In some embodiments, the first OCV detection device includes a bracket and a plurality of first test probe mechanisms slidably connected to the bracket along a first direction.

[0033] By adopting the above technical solution, each first test probe mechanism corresponds to a battery material to be tested and performs testing therewith. At the same time, the spacing between the first test probe mechanisms can be adjusted according to the different sizes of the battery materials to be tested.

[0034] In some embodiments, the transfer device includes a first linear module, a second linear module slidably connected to the first linear module, and a claw mechanism provided on the second linear module, one end of the first linear module extends to the replacement station and the other end extends to the transfer station, the second linear module reciprocates relative to the first linear module along a first direction, and the claw mechanism reciprocates relative to the second linear module along a second direction, and the first direction is perpendicular to the second direction.

[0035] By adopting this technical solution, the second linear module drives the claw mechanism to reciprocate between the transfer station and the replacement station to accommodate the replacement of incoming batteries for testing with incoming batteries in transit. The claw mechanism reciprocates relative to the second linear module in the second direction to grasp the incoming batteries for testing or in transit.

[0036] In some embodiments, the second OCV detection device includes a second test probe mechanism, and the second test probe mechanism is disposed on the second linear module.

[0037] By adopting the above technical solution, the second test probe mechanism is used to detect the incoming battery materials, and the second test probe mechanism can move back and forth in the second direction.

[0038] In some embodiments, the detection equipment further includes an information collection mechanism, which is disposed on the transfer device and is capable of moving back and forth between the transfer station and the replacement station.

[0039] By adopting the above technical solution, the information of the incoming battery materials to be tested and the information of the incoming battery materials in transit are detected by using the information collection mechanism.

[0040] In some embodiments, the transfer station includes a storage box and a tray mechanism for supporting the storage box, and a plurality of storage cells are formed in the storage box.

[0041] By adopting the above technical solution, the storage box is used to place each transfer battery material, the tray mechanism is used to support the storage box, and the transfer battery material is placed in the corresponding storage unit cell.

[0042] In some embodiments, the tray mechanism includes at least two stacked tray bodies and a slide rail structure provided between any two adjacent tray bodies, wherein one tray body slides relative to the other tray body along a guide direction of the slide rail structure.

[0043] By adopting the above technical solution, one tray body slides relative to the other tray body along the guide direction of the slide rail structure, so that the storage box is spatially extended, which facilitates loading and unloading of materials into the storage box.

[0044] In some embodiments, the slide rail structure includes a guide rail provided on one of the tray bodies and a slider provided on the other tray body, and the slider is slidably connected to the guide rail.

[0045] By adopting the above technical solution, two adjacent tray bodies can slide relative to each other under the mutual sliding action of the slider and the guide rail. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] 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.

[0047] FIG1 is a flow chart of an OCV detection method provided in an embodiment of the present application;

[0048] FIG2 is another flow chart of the OCV detection method provided in an embodiment of the present application;

[0049] FIG3 is another flow chart of the OCV detection method provided in an embodiment of the present application;

[0050] FIG4 is a schematic diagram of the structure of a detection device provided in some embodiments of the present application;

[0051] FIG5 is a schematic structural diagram of a transfer station of a detection device provided in some embodiments of the present application;

[0052] FIG6 is a left view of the transfer station of the detection equipment provided in some embodiments of the present application.

[0053] Among them, the reference numerals in the figures are:

[0054] 100. Testing equipment;

[0055] 10. Transmission line; 10a. OCV inspection station; 10b. Replacement station;

[0056] 20. Transfer station; 21. Storage box; 22. Tray mechanism; 21a. Storage cell; 221. Tray body; 222. Slide rail structure; 2221. Guide rail; 2222. Slider;

[0057] 30. First OCV detection device; 31. Bracket; 32. First test probe mechanism;

[0058] 40. Second OCV detection device; 41. Second test probe mechanism;

[0059] 50. Transfer device; 51. First linear module; 52. Second linear module; 53. Claw mechanism;

[0060] 60. Information collection agencies;

[0061] First direction X; second direction Y. DETAILED DESCRIPTION

[0062] 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.

[0063] 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.

[0064] 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.

[0065] 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.

[0066] 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.

[0067] 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.

[0068] 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.

[0069] 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.

[0070] 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.

[0071] Typically, the battery OCV testing process on a production line involves transferring incoming battery cells in batches via a transmission line to an OCV testing station. The first batch of battery cells that have completed testing are stored in a transfer station, and the number and location of good products are recorded. The next batch of battery cells are then transferred to the OCV testing station for testing. Once defective products appear, they are added to the second batch from the good products in the transfer station to ensure that all battery cells in the second batch pass the test before being transferred to the next station. In this way, once defective battery cells appear in the next batch, they must be supplemented with good products from the previous batch. This way, the overall number of battery cells tested remains unchanged. This OCV testing method has relatively low efficiency.

[0072] In view of this, the present application provides an OCV testing method that adds OCV testing of incoming battery materials in transit. That is, OCV testing is performed on incoming battery materials in transit at the transfer station. In this way, OCV testing of incoming battery materials to be tested on the production line does not interfere with each other. At the same time, in order to ensure that the incoming battery materials to be tested can be stably output in batches of good products, good products in the incoming battery materials in transit can be replaced with defective products in the incoming battery materials to be tested. The total amount of batteries undergoing OCV testing per unit time is increased, that is, the detection efficiency is higher.

[0073] Please refer to FIG1 , which is a flow chart of an OCV detection method provided in an embodiment of the present application.

[0074] The OCV detection method includes:

[0075] S001, OCV testing of incoming materials to be tested, the incoming battery materials to be tested are transferred to the OCV testing station for testing. If the test results are unqualified, all incoming materials are transferred to the replacement station;

[0076] The incoming battery material, which may represent the majority of the total battery supply, is transported via a conveyor line to the OCV testing and replacement stations. After testing at the OCV station, batteries with passing results are transferred to the next station. Batteries with unqualified results are transferred to the replacement station, awaiting replacement.

[0077] S002, OCV testing of incoming transfer materials: performing OCV testing on incoming transfer battery materials at the transfer station, with the number of incoming transfer battery materials being tested being one or more;

[0078] Transferred battery materials are materials from different batches or conveyed on different transmission lines than the incoming batteries to be tested. For example, they can be batteries transferred to the transfer station via another transmission line or stored directly at the transfer station. They are used to replace defective batteries in the incoming batteries to be tested. In this step, one OCV test can be performed on one or more transferred battery materials.

[0079] A transfer station can be a location or device used to store or transfer batteries.

[0080] S003. Replace the battery once. Transfer the OCV defective batteries in the incoming materials to be tested to the transfer station. Also, transfer the OCV qualified batteries in the transfer process to the replacement station for replacement.

[0081] In this step, the batteries at the transfer station and the replacement station are swapped to replenish the defective batteries detected by OCV testing in the incoming battery materials to be tested.

[0082] Here, it should be noted that there is no sequential execution relationship between step S001 and step S002, and in some embodiments, step S001 and step S002 can be executed simultaneously.

[0083] The OCV detection method provided in the embodiment of the present application performs OCV detection on incoming battery materials to be tested, and at the same time, also performs OCV detection on incoming battery materials in transit. Therefore, in the battery production process, it is equivalent to setting up two OCV detection stations, and the two OCV detection stations for batteries do not interfere with each other. In order to ensure that the incoming materials to be tested can be stably output into batches of good products, the good products in the incoming battery materials in transit can also be replaced with the defective products in the incoming battery materials to be tested. In this way, in addition to performing OCV detection on conventional incoming battery materials to be tested, OCV detection can also be performed on incoming battery materials in transit, so that more batteries can be tested per unit time, and the detection efficiency is higher.

[0084] Referring to FIG. 2 , in some embodiments, the OCV detection method includes:

[0085] S004. Detection of the incoming materials to be tested: The incoming battery materials to be tested are transferred to the replacement station for information collection. If the information collection result is unqualified, all incoming materials will stay at the replacement station.

[0086] Here, the information detection may include the batch information, production date information, type information, etc. of the battery materials to be tested. If the information collection results are unqualified, they will also be listed as defective products. The current batch of battery materials to be tested will stay at the replacement station and wait for replenishment and replacement.

[0087] Here, it should be noted that there is no sequential execution relationship between step S004 and step S001, and in some embodiments, step S001 and step S004 can be executed simultaneously.

[0088] For example, in one embodiment, the current batch of incoming batteries to be tested can be subjected to both OCV testing and information testing. Batteries that fail any test will be identified as defective products and will wait for replacement with good batteries at the transfer station.

[0089] Referring to FIG. 3 , in some embodiments, the OCV detection method includes:

[0090] S005, transfer material information detection, collect information on the transfer battery materials at the transfer station, and the number of the collected transfer battery materials is one or more;

[0091] Similarly, information collected can include batch information, production date information, and type information for incoming battery materials. Products that fail this information collection are also classified as defective. When collecting information on incoming battery materials, the number of batteries collected can be one or more, depending on actual replenishment needs.

[0092] S006. Secondary replacement of batteries: transfer unqualified products in the incoming materials to be tested to the transfer station, and transfer qualified products in the transfer batteries to the replacement station for replacement.

[0093] In this step, the batteries at the transfer station and the replacement station are swapped to replenish the defective batteries detected by information detection in the incoming battery materials to be tested.

[0094] Here, it should be noted that there is no sequential execution relationship between step S002 and step S005, and in some embodiments, step S002 and step S005 can be executed simultaneously.

[0095] For example, in one embodiment, the current batch of incoming batteries can be subjected to both OCV testing and information testing, wherein any battery that fails any test will be classified as a defective product, while the good products will be used for supplementary replacement.

[0096] Likewise, there is no sequential execution relationship between step S003 and step S006 , and, in some embodiments, step S003 and step S006 may be executed simultaneously.

[0097] For example, in one embodiment, there are one or more batteries to be tested that are identified as defective products that meet both the OCV test and the information test, and there are one or more batteries in transit that are identified as good products that meet both the OCV test and the information test. At this time, only one battery replacement is required, which is equivalent to the simultaneous execution of step S003 and step S006.

[0098] In one embodiment, during the OCV testing step of the incoming transfer materials, defective incoming transfer battery materials at the transfer station are classified and stored.

[0099] Understandably, the incoming battery materials at the transfer station can be divided into the following categories: one is good products that have passed the OCV test and have completed the test; the other is defective products that have passed the OCV test and have completed the test.

[0100] To prevent confusion in the incoming and outgoing battery materials at the transfer station, defective products must be classified. Once classified, the remaining parts are all good products. For example, the transfer station can be divided into a defective product area and a good product area. Defective products detected by OCV are placed in the defective product area, while good products detected by OCV are placed in the good product area.

[0101] In one embodiment, in the step of detecting the information of the transferred incoming materials, defective transferred battery materials detected at the transfer station are classified and stored.

[0102] Understandably, the incoming battery materials at the transfer station can be divided into the following categories: one is good products that have been tested by information and have completed the test; the other is defective products that have been tested by information and have completed the test.

[0103] To prevent confusion in the incoming and outgoing battery materials at the transfer station, defective products must be classified. Once classified, the remaining parts are all good products. For example, the transfer station can be divided into a defective product area and a good product area. Defective products detected by information are placed in the defective product area, while good products detected by information are placed in the good product area.

[0104] In another embodiment, batteries that fail either the OCV test or the information test are considered defective, and batteries that pass both tests are considered good. Therefore, in this embodiment, when dividing the defective and good areas within the transfer station, defective products that have undergone both tests and any one of the tests are placed in the defective area, and good products that have undergone both tests are placed in the good area.

[0105] Please refer to Figure 4. The embodiment of the present application further provides a testing device 100 for implementing the above-mentioned OCV testing method. The testing device 100 includes a transmission line 10, a transfer station 20, a first OCV testing device 30, a second OCV testing device 40, and a transfer device 50. The transmission line 10 is used to transmit the incoming battery to be tested. The transmission line 10 has an OCV testing station 10A and a replacement station 10b. The transfer station 20 stores a plurality of incoming battery materials. The first OCV testing device 30 is used to OCV testing is performed on the incoming battery materials to be tested; the second OCV testing device 40 is used to perform OCV testing on the incoming battery materials in transit; the transfer device 50 is used to realize the replacement of incoming battery materials to be tested and incoming battery materials in transit; the first OCV testing device 30 is arranged at the OCV testing station 10a, the transfer device 50 moves back and forth between the transfer station 20 and the replacement station 10b, and the second OCV testing device 40 is arranged on the transfer device 50 and can move back and forth between the transfer station 20 and the replacement station 10b.

[0106] The testing device 100 provided in the embodiment of the present application transmits incoming battery materials to be tested to the OCV testing station 10A and performs replacement work via a transmission line 10. The transfer station 20 is used to store multiple incoming battery materials for transfer. The first OCV testing device 30 performs OCV testing on each incoming battery material to be tested, and the second OCV testing device 40 tests the incoming battery materials for transfer. The transfer device 50 is used to achieve material replacement between the incoming battery materials to be tested and the incoming battery materials for transfer. In this way, the transmission line 10 can quickly discharge the materials and achieve higher efficiency.

[0107] Referring to FIG. 4 , in some embodiments, the first OCV detection device 30 includes a bracket 31 and a plurality of first test probe mechanisms 32 slidably connected to the bracket 31 along a first direction X.

[0108] It can be understood that the bracket 31 plays a role of fixing and supporting. The sliding connection between each first test probe mechanism 32 and the fixing mechanism can be a direct sliding connection or an indirect sliding connection.

[0109] For example, a slide groove extending along the first direction X is provided on the bracket 31, and each first test probe mechanism 32 is provided with a protrusion adapted to the slide groove. The protrusion is used to slide in the slide groove to realize relative sliding of the first test probe mechanism 32 relative to the bracket 31, and the sliding direction and sliding distance are not restricted.

[0110] For example, a slide rail is provided on the bracket 31, and a slider slidably connected to the slide rail is provided on each first test probe mechanism 32. The slider and the slide rail are slidably matched to realize relative sliding of each first test probe mechanism 32 relative to the bracket 31, and the sliding direction and sliding distance are not restricted.

[0111] Here, the first direction X is the arrangement direction of the incoming batteries, and can be any one of the width direction, length direction or thickness direction of the batteries.

[0112] With such arrangement, each first test probe mechanism 32 corresponds to a battery material to be tested and performs testing therewith. Meanwhile, the spacing between the first test probe mechanisms 32 can be adjusted according to the different sizes of the battery materials to be tested.

[0113] Please refer to Figure 4. In some embodiments, the transfer device 50 includes a first linear module 51, a second linear module 52 slidably connected to the first linear module 51, and a claw mechanism 53 provided on the second linear module 52. One end of the first linear module 51 extends to the replacement station 10b and the other end extends to the transfer station 20. The second linear module 52 reciprocates relative to the first linear module 51 along a first direction X, and the claw mechanism 53 reciprocates relative to the second linear module 52 along a second direction Y. The first direction X is perpendicular to the second direction Y.

[0114] It is understood that the first linear module 51 is used to enable the second linear module 52 to reciprocate in the first direction X. The first linear module 51 may be a combination of a chain belt and a sliding mechanism. The second linear module 52 is used to enable the claw mechanism 53 to reciprocate in the second direction Y. The second linear module 52 includes, but is not limited to, a lifting mechanism, a telescopic cylinder, a screw mechanism, a servo motor, and the like.

[0115] Here, the second direction Y may be a gravity direction.

[0116] With this arrangement, the second linear module 52 drives the claw mechanism 53 to reciprocate between the transfer station 20 and the replacement station 10b to accommodate the replacement of incoming batteries for testing with incoming batteries in transit. The claw mechanism 53 reciprocates in the second direction Y relative to the second linear module 52 to grasp the incoming batteries for testing or transit.

[0117] Referring to FIG. 4 , in some embodiments, the second OCV detection device 40 includes a second test probe mechanism 41 . The second test probe mechanism 41 is disposed on a second linear module 52 .

[0118] Here, the second test probe mechanism 41 may be structurally the same as or different from the first test probe mechanism 32 . At the same time, the second test probe mechanism 41 can move back and forth along the second direction Y to detect the transfer battery materials in the transfer station 20 .

[0119] With such configuration, the second test probe mechanism 41 is used to detect the incoming battery materials, and the second test probe mechanism 41 can move back and forth in the second direction Y.

[0120] Please refer to FIG. 4 . In some embodiments, the detection device 100 further includes an information collection mechanism 60 . The information collection mechanism 60 is disposed on the transfer device 50 and is capable of reciprocating between the transfer station 20 and the replacement station 10 b .

[0121] It is understood that the information collection mechanism 60 includes, but is not limited to, a camera, a scanner, or a camera, and is used to collect images or text information. Furthermore, the information collection mechanism 60 provided on the transfer device 50 can collect information about incoming battery materials to be tested and information about incoming battery materials in transit.

[0122] Optionally, the information collection mechanism 60 is provided on the second linear module 52 of the transfer device 50 , so as to meet the requirements of reciprocating movement between the transfer station 20 and the replacement station 10 b .

[0123] 5 and 6 , in some embodiments, the transfer station 20 includes a storage box 21 and a tray mechanism 22 for supporting the storage box 21 . A plurality of storage cells 21 a are formed in the storage box 21 .

[0124] It can be understood that the storage box 21 is used to place the incoming battery materials, the tray mechanism 22 is used to support the storage box 21, and the incoming battery materials are placed in the corresponding storage cells 21a.

[0125] Optionally, each storage cell 21a may be divided into two areas, wherein the storage cells 21a in one area are used to store defective products, and the storage cells 21a in the other area are used to store good products.

[0126] Please refer to Figures 5 and 6. In some embodiments, the tray mechanism 22 includes at least two tray bodies 221 stacked together and a slide rail structure 222 arranged between any two adjacent tray bodies 221, wherein one tray body 221 slides relative to the other tray body 221 along the guide direction of the slide rail structure 222.

[0127] It can be understood that one of the tray bodies 221 can slide relative to the other tray body 221 along the guide direction of the slide rail structure 222, so that the storage box 21 can be spatially extended, which facilitates loading and unloading of materials into and out of the storage box 21.

[0128] Referring to FIG. 6 , in some embodiments, the slide rail structure 222 includes a guide rail 2221 disposed on one of the tray bodies 221 and a slider 2222 disposed on the other tray body 221 . The slider 2222 is slidably connected to the guide rail 2221 .

[0129] With such arrangement, under the sliding action between the slider 2222 and the guide rail 2221 , two adjacent tray bodies 221 can slide relative to each other.

[0130] 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. An OCV detection method, characterized in that: The OCV detection method comprises: OCV testing of incoming materials to be tested: the incoming battery materials to be tested are transferred to the OCV testing station for testing. If the test result is unqualified, all incoming materials are transferred to the replacement station; OCV testing of incoming transfer materials: OCV testing of incoming transfer battery materials at the transfer station is performed, and the number of incoming transfer battery materials tested is one or more; When the battery is replaced once, the defective OCV products among the incoming batteries to be tested are transferred to the transfer station, and the good OCV products among the incoming batteries in transfer are transferred to the replacement station for replacement.

2. The OCV detection method according to claim 1, characterized in that: The OCV detection method further comprises: The incoming materials to be tested are tested and the incoming battery materials to be tested are transmitted to the replacement station for information collection. If the information collection result is unqualified, all incoming materials will stay at the replacement station.

3. The OCV detection method according to claim 2, characterized in that: The OCV detection method further comprises: Transfer material information detection, collect information on the transfer battery materials at the transfer station, and the number of the transfer battery materials collected is one or more; The secondary replacement of batteries is to transfer the unqualified products in the incoming materials to be tested to the transfer station, and the qualified products in the transfer batteries are transferred to the replacement station for replacement.

4. The OCV detection method according to claim 1, characterized in that: In the step of OCV detection of the transferred incoming materials, defective transferred battery materials at the transfer station are classified and stored.

5. The OCV detection method according to claim 2, characterized in that: In the step of detecting the information of the transferred incoming materials, the defective transferred battery materials detected at the transfer station are classified and stored.

6. A detection device, characterized in that: For implementing the OCV detection method according to any one of claims 1 to 5, the detection device comprises: A transmission line, the transmission line is used to transmit incoming battery materials to be tested, and the transmission line has an OCV testing station and a replacement station; A transfer station, wherein a plurality of transfer battery materials are stored in the transfer station; A first OCV detection device, the first OCV detection device is used to perform OCV detection on incoming battery materials to be tested; A second OCV detection device, the second OCV detection device is used to transfer incoming battery materials for OCV detection; A transfer device, which is used to replace incoming materials between the battery cells to be tested and the incoming materials of the transfer batteries; Among them, the first OCV detection device is arranged at the OCV detection station, the transfer device moves back and forth between the transfer station and the replacement station, and the second OCV detection device is arranged on the transfer device and can move back and forth between the transfer station and the replacement station.

7. The detection device according to claim 6, characterized in that: The first OCV detection device includes a bracket and a plurality of first test probe mechanisms slidably connected to the bracket along a first direction.

8. The detection device according to claim 6, characterized in that: The transfer device includes a first linear module, a second linear module slidably connected to the first linear module, and a claw mechanism arranged on the second linear module, one end of the first linear module extends to the replacement station and the other end extends to the transfer station, the second linear module reciprocates relative to the first linear module along a first direction, and the claw mechanism reciprocates relative to the second linear module along a second direction, and the first direction is perpendicular to the second direction.

9. The detection device according to claim 8, characterized in that: The second OCV detection device includes a second test probe mechanism 41 , and the second test probe mechanism 41 is disposed on the second linear module.

10. The detection device according to any one of claims 6 to 9, characterized in that: The detection equipment also includes an information collection mechanism, which is arranged on the transfer device and can move back and forth between the transfer station and the replacement station.

11. The detection device according to any one of claims 6 to 10, characterized in that: The transfer station includes a storage box and a tray mechanism for supporting the storage box, and a plurality of storage cells are formed in the storage box.

12. The detection device according to claim 11, characterized in that: The tray mechanism comprises at least two tray bodies stacked in layers and a slide rail structure disposed between any two adjacent tray bodies, wherein one tray body slides relative to the other tray body along the guide direction of the slide rail structure.

13. The detection device according to claim 12, characterized in that: The slide rail structure comprises a guide rail arranged on one of the tray bodies and a slider arranged on the other tray body, and the slider is slidably connected to the guide rail.

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