Apparatus for testing open circuit voltage of battery

Abstract

An apparatus for testing an open circuit voltage of a battery, said apparatus comprising: a conveying assembly (10); a first code scanning member (11), the first code scanning member (11) being arranged above the conveying assembly (10); and a test member (14), the test member (14) being arranged downstream from the first code scanning member (11) in a first direction, a plurality of test probes (142) being arranged on the test member (14), and the distance between every two adjacent test probes (142) in the first direction being adjustable. According to the described apparatus, testing on batteries can be completed by simply using the conveying assembly (10) to drive batteries to move, attaining an overall high degree of automation. Moreover, a plurality of test probes (142) are arranged on the test member (14) and the distance between every two adjacent test probes (142) in the first direction is adjustable. Thus, by means of adjusting the distance between the test probes (142) so that the position of each test probe (142) corresponds to the position of each battery on the conveying assembly (10), testing on a plurality of batteries on the conveying assembly (10) can be completed at once during an open circuit voltage test, thus significantly improving the efficiency of testing.

Description

Battery open circuit voltage test device Technical Field

[0001] This application relates to the field of battery testing technology, and more particularly to a device for testing the open-circuit voltage of a battery. This application claims priority to Chinese patent application number 202410108715.2, filed with the State Intellectual Property Office of China on January 26, 2024, entitled "Device for Testing the Open-Circuit Voltage of a Battery," the entire contents of which are incorporated herein by reference. Background Art

[0002] The open circuit voltage (OCV) test system of a battery cell is used to test the voltage of a battery. Existing battery cell OCV test systems have low automation and low detection efficiency during use.

[0003] Summary of the Invention

[0004] In view of the above problems, the present application provides a battery open circuit voltage testing device, which can solve the problems of low automation and low detection efficiency during the use of the battery cell OCV testing system.

[0005] To solve the above technical problems, the present application proposes a battery open circuit voltage test device, comprising:

[0006] A transmission assembly, configured to drive the battery to move along a first direction;

[0007] a first code scanning component, the first code scanning component being located above the conveying assembly, and being used to scan and read the graphic code on the battery when the battery on the conveying assembly moves below the first code scanning component along a first direction; and

[0008] A test piece is arranged downstream of the first code scanning piece along the first direction, and a plurality of test probes are provided on the test piece, and the distance between two adjacent test probes along the first direction is adjustable; wherein, the first direction is the transmission direction of the transmission component.

[0009] In the technical solution of the embodiment of the present application, by placing the battery on the conveyor assembly, the conveyor assembly drives the battery to move along the first direction. After the battery moves to the first preset position, the first barcode scanning component scans each battery on the conveyor assembly in turn to read the information of the corresponding battery, and then the conveyor assembly continues to drive the battery along the first direction. After moving to the second preset position, multiple test probes on the test piece simultaneously perform OCV tests on multiple batteries. The defective batteries can be sorted out by the scanning results and the OCV test results. In this technical solution, the battery test can be completed by only driving the battery to move by the conveyor assembly, and the overall degree of automation is high. Moreover, since the test piece is provided with multiple test probes, and the spacing between two adjacent test probes along the first direction is adjustable, by adjusting the distance between each test probe so that the position of each test probe corresponds to the position of each battery on the conveyor assembly, during the OCV test, multiple batteries on the conveyor assembly can be tested at one time, and the detection efficiency is significantly improved. At the same time, since the distance between each test probe is adjustable, it is convenient to detect batteries of different models, and the compatibility is strong, which brings great convenience to the use of the inspection personnel.

[0010] In some embodiments, a first driving member is further included, the first driving member being disposed on the transmission assembly and connected to the first barcode scanning member for driving the first barcode scanning member to move in the first direction. Thus, the first driving member drives the first barcode scanning member to move in the first direction, so that the position of the first barcode scanning member corresponds to the position of the battery on the transmission assembly, thereby facilitating the first barcode scanning member to scan the graphic code on the corresponding battery.

[0011] In some embodiments, a tray is further included, the conveying assembly includes a first frame and a first conveying line, and the first conveying line is disposed on the first frame;

[0012] The first driving member is disposed on the first frame, and the tray is disposed on the first conveyor line, and the first conveyor line is used to drive the tray to move along the first direction. In this way, it is convenient to place the battery on the tray for testing.

[0013] In some embodiments, the tray includes a base plate and at least two clamping portions, the base plate being disposed on the first conveyor line, the two clamping portions being spaced apart on the base plate along the first direction, and the spacing between the two clamping portions being adjustable. When multiple batteries are placed between the two clamping portions on the base plate, the distance between the two clamping portions is adjusted so that the clamping portions and the batteries, and the batteries themselves, abut against each other, thereby ensuring that the multiple batteries are stably positioned on the base plate and preventing the batteries on the base plate from shaking when the first conveyor line is in motion.

[0014] In some embodiments, the clamping portion includes a clamping plate, a movable plate, a connecting column, an elastic member, and a top plate;

[0015] The clamping plate is arranged on the bottom plate along the second direction, the movable plate is located on the side of the clamping plate facing away from the battery, and the top plate is located on the side of the clamping plate facing the battery; one end of the connecting post is connected to the movable plate, and the other end passes through the clamping plate and is connected to the top plate, and the connecting post can move relative to the clamping plate along the first direction;

[0016] The elastic member is sleeved on the connecting post, with one end of the elastic member abutting against the clamping plate and the other end abutting against the top plate, wherein the second direction is the height direction of the bottom plate and is perpendicular to the first direction. In this way, when the movable plate is pulled by an external force, the movable plate drives the top plate to move via the connecting post, and the top plate compresses the elastic member under the action of the external force. When the elastic member is compressed, the top plate can move toward one side of the clamping plate, thereby adjusting the distance between the two clamping parts.

[0017] In some embodiments, the system further includes a second rack disposed downstream of the first rack along the first direction;

[0018] The first conveying line on the transmission assembly is arranged on the first frame and the second frame, and the test piece is arranged on the second frame. The arrangement of the second frame facilitates the fixing of the test piece.

[0019] In some embodiments, the test piece further comprises a mounting seat, and the mounting seat is disposed on the second frame;

[0020] The mounting base is provided with a plurality of elongated holes on both sides along the first direction, each of which is provided with a corresponding test probe, and the fixed position of the test probe relative to the elongated holes is adjustable. Since the mounting base is provided with a plurality of elongated holes on both sides along the first direction, and each elongated hole is provided with a corresponding test probe, multiple test probes can be installed on the mounting base together. Since each test probe is fixed in a corresponding elongated hole, the spacing between two adjacent test probes can be adjusted by adjusting the position of the test probe in the elongated hole, so that the position of each test probe corresponds to the position of each battery on the tray.

[0021] In some embodiments, a third drive member is further included, disposed on the second frame and connected to the mounting base, for driving the mounting base to move in the first and second directions. Thus, by driving the mounting base in the first and second directions via the third drive member, the test probe on the mounting base can be simultaneously driven to move in the first and second directions, thereby facilitating control of contact or separation between the test probe and the electrode terminals on the battery, achieving a high degree of automation and facilitating OCV testing.

[0022] In some embodiments, the machine further comprises a second conveying line, wherein the second conveying line is arranged on the second frame, and a conveying direction of the second conveying line is perpendicular to a conveying direction of the first conveying line;

[0023] When the batteries on the tray fail the barcode scan or test, the second conveyor line drives the trays on the first conveyor line. Because the conveying direction of the second conveyor line is perpendicular to that of the first conveyor line, when a battery on the tray on the first conveyor line fails the barcode scan or test, the second conveyor line is activated and the tray on the first conveyor line is transferred to a set position. At this point, the batteries to be tested can be re-loaded onto the first conveyor line, avoiding interruptions in the testing process and improving testing efficiency.

[0024] In some embodiments, a replacement station is further included, which is disposed on the second frame and is used to place batteries from the tray on the second conveyor line. Thus, when the second conveyor line delivers the batteries from the tray to a set position, the corresponding batteries can be placed on the replacement station. After manually replacing batteries that fail scanning or testing, the replaced batteries are placed on the second conveyor line. The second conveyor line then reverses and delivers the replaced batteries to the first conveyor line for re-testing.

[0025] In some embodiments, the device further includes a control cabinet and a plurality of indicator lights, wherein the control cabinet is disposed on the second rack, and the first barcode scanning unit and the test unit are electrically connected to a controller in the control cabinet respectively;

[0026] A plurality of indicator lights are provided on the replacement table, and each indicator light is electrically connected to the controller. When the battery on the second conveyor line is placed on the replacement table, the controller controls the corresponding indicator light to start. In this way, when the battery on the second conveyor line is placed on the replacement table, since the first barcode scanning component, the test component, and the indicator light are electrically connected to the controller respectively, when the first barcode scanning component sends the scanning result and the test component sends the test result to the controller, the controller can control the corresponding indicator light to start according to the corresponding result. In this way, unqualified batteries can be quickly discovered based on the on and off of the indicator light, which is conducive to the rapid replacement of batteries.

[0027] In some embodiments, a second barcode scanner is further included, which is disposed on the second frame and is used to scan and read the graphic code of the replaced battery on the second conveyor line. In this way, the second barcode scanner scans the graphic code of the replaced battery, thereby preventing the replaced battery from entering the OCV test process without being scanned.

[0028] In some embodiments, the device further includes a second drive member disposed on the second frame and connected to the second barcode scanning member, configured to drive the second barcode scanning member to move in the first direction. Because the second drive member can drive the second barcode scanning member to move in the first direction, the position of the second barcode scanning member can be easily adjusted so that the position of the second barcode scanning member corresponds to the position of the replaced battery, thereby facilitating scanning by the second barcode scanning member.

[0029] In some embodiments, the apparatus further includes a display, the display being disposed on the second frame, the first barcode scanning component, the second barcode scanning component, and the test component being electrically connected to the display. The display facilitates displaying the results of the first barcode scanning component, the second barcode scanning component, and the test component, thereby facilitating inspection by test personnel.

[0030] In some embodiments, a fourth driving member is further included, the fourth driving member being disposed on the second frame and configured to drive the movable plate to move in the first direction. Since the fourth driving member can drive the movable plate to move in the first direction, the top plate can be easily driven to move, thereby quickly releasing or tightening the battery between the two top plates, thereby facilitating battery replacement.

[0031] In some embodiments, a switch is further included, the switch being disposed on the second frame and electrically connected to the fourth driving member. The provision of the switch facilitates the control of the fourth driving member.

[0032] In some embodiments, a storage rack for storing replacement batteries is further included, and the storage rack is arranged on the second rack. The arrangement of the storage rack facilitates the storage of replaced batteries.

[0033] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0035] FIG1 is a schematic structural diagram of an open circuit voltage testing device for a battery according to some embodiments of the present application;

[0036] FIG2 is a schematic diagram of a partial structure of an open circuit voltage testing device for a battery according to some embodiments of the present application;

[0037] FIG3 is a schematic diagram of a partial structure of an open circuit voltage testing device for a battery according to some embodiments of the present application;

[0038] FIG4 is a schematic diagram of a tray structure in some embodiments of the present application;

[0039] FIG5 is a partial enlarged schematic diagram of FIG4;

[0040] FIG6 is a schematic diagram of a test piece structure according to some embodiments of the present application;

[0041] FIG7 is a partial enlarged schematic diagram of FIG6;

[0042] FIG8 is a schematic structural diagram of a fourth driving member in some embodiments of the present application;

[0043] FIG9 is a schematic structural diagram of a storage rack according to some embodiments of the present application.

[0044] The accompanying drawings in the specific implementation manner are as follows:

[0045] 10. Conveying assembly; 101. First rack; 1011. First platform; 1012. First bracket; 102. First conveyor line; 11. First barcode scanning unit; 12. First driving unit; 13. Tray; 131. Bottom plate; 132. Clamping plate; 133. Movable plate; 134. Connecting column; 135. Elastic member; 136. Top plate; 14. Test piece; 141. Mounting seat; 1411. Long hole; 142. Test probe; 15. Second conveyor line; 1 6. Replacement table; 17. Second code scanning unit; 18. Second driving unit; 19. Second rack; 191. Second platform; 192. Second bracket; 20. Control cabinet; 21. Display; 22. Storage rack; 23. Third driving unit; 24. Indicator light; 25. Fourth driving unit; 251. Cylinder; 252. Fixed plate; 253. Push plate; 254. Moving plate; 255. Guide rail; 256. Slider; 257. Claw hook; 26. Switch; 111. Battery. DETAILED DESCRIPTION

[0046] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0047] 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 only for the purpose of describing specific embodiments 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 above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0048] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0049] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0050] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0051] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0052] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of 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, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0053] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0054] Currently, in the battery cell manufacturing process, in order to effectively select battery cells that self-discharge and pose a safety hazard, all battery cells need to undergo high-temperature aging, and their voltage and internal resistance must be tested before and after aging. The data from the two tests are then compared to obtain the difference, thereby selecting battery cells with safety hazards. This process is the open circuit voltage (OCV) test of the battery cells. Most existing polymer battery cell OCV testing equipment uses a turntable model. When in use, the operator places four battery cells at the loading position of the turntable at one time. After pressing the start button, the turntable rotates to the scanning position to scan the battery cells. At this time, the operator can place four more battery cells at the loading position of the turntable and press the start button again. The scanned battery cells are transferred to the test position for voltage and internal resistance testing. If the battery cell is tested before aging, the test data will be saved to the equipment. If the battery cell is tested after aging, the equipment will compare the test data with the test data before aging, and compare the difference with the pre-set process requirements. If the equipment determines that the battery cell is defective, the corresponding indicator light at the battery cell position will light up, and finally the operator will manually separate the qualified products from the defective products. However, during use, the existing OCV testing equipment requires manual loading and unloading, with a low degree of automation and low detection efficiency.

[0055] In order to solve the problems of low automation and low detection efficiency during the use of OCV testing equipment, an embodiment of the present application provides an open circuit voltage testing device for a battery. As shown in Figure 1 and in combination with Figure 2, the open circuit voltage testing device for the battery comprises a conveying component 10, a first code scanning component 11, and a testing component 14, wherein the conveying component 10 is used to drive the battery to move along a first direction, the first code scanning component 11 is located above the conveying component 10, and when the battery on the conveying component 10 moves along the first direction to the bottom of the first code scanning component 11, the first code scanning component 11 is used to scan and read the graphic code on the battery, the testing component 14 is arranged downstream of the first code scanning component 11 along the first direction, and a plurality of test probes 142 are provided on the testing component 14, and the spacing between two adjacent test probes 142 along the first direction is adjustable; wherein the first direction is the conveying direction of the conveying component 10.

[0056] As shown in FIG1 , the first direction in the embodiment of this specification may be the X-axis direction. The structure of the conveying assembly 10 may be a belt conveyor line, a roller conveyor line, etc. The graphic code may include a barcode, a QR code, etc. The specific one may be determined according to actual conditions and is not limited in this embodiment of this specification.

[0057] In this embodiment, the first barcode scanning component 11 can be configured as a barcode scanning gun, infrared scanner, or the like. Referring to FIG1 , when the battery 111 is placed on the conveyor assembly 10, the first barcode scanning component 11 is positioned above the conveyor assembly 10. As the conveyor assembly 10 drives the battery from right to left along the X-axis, the first barcode scanning component 11 sequentially scans the graphical code of each battery 111 on the conveyor assembly 10. It is understood that the first barcode scanning component 11 can also have other configurations, which can be determined based on actual circumstances and are not limited in this embodiment.

[0058] In this embodiment, at least two rows of test probes 142 are arranged along the X-axis on the test piece 14. These test probes 142 are battery OCV test probes. As shown in Figure 1 , the test piece 14 is positioned to the left of the first barcode scanning unit 11. When the batteries on the conveyor assembly 10 move from right to left along the X-axis and reach below the test piece 14, the conveyor assembly 10 stops. At this point, the multiple test probes 142 on the test piece 14 can test the multiple batteries 111 on the conveyor assembly 10.

[0059] In the technical solution of the embodiment of the present application, the battery is driven to move along the X-axis by the conveying component 10. After the battery moves to the bottom of the first barcode scanning component 11, at this time, the position of the first battery 111 from right to left is directly opposite to the scanning head on the first barcode scanning component 11, and the first barcode scanning component 11 begins to scan the battery 111 on the far right of the conveying component 10. When the conveying component 10 drives the battery to continue to move to the left, the first barcode scanning component 11 can scan each battery 111 on the conveying component 10 in turn to read the information of the corresponding battery. After the scan is completed, the conveying component 10 continues to drive the battery 111 to move to the left along the X-axis. When the battery moves to the bottom of the test piece 14, the conveying component 10 stops moving. At this time, the multiple test probes 142 on the test piece 14 perform OCV tests on multiple batteries at the same time. Finally, the inspector can sort out the defective batteries based on the scanning results and OCV test results.

[0060] In this technical solution, the battery test can be completed only when the battery is moved to the position of the first barcode scanning part 11 and the test part 14 by the transmission component 10, and the overall degree of automation is high. Moreover, since a plurality of test probes 142 are provided on the test part 14, and the spacing between two adjacent test probes 142 along the first direction is adjustable, by adjusting the distance between each test probe 142 so that the position of each test probe 142 corresponds to the position of each battery on the transmission component 10, during the OCV test, multiple batteries on the transmission component 10 can be tested at one time, and the detection efficiency is significantly improved. At the same time, since the distance between each test probe 142 is adjustable, when different types of batteries need to be tested, it is only necessary to adjust the spacing between the test probes 142 to ensure that the distance between two adjacent test probes 142 corresponds to the position between two adjacent batteries on the transmission component 10. In this way, different types of batteries can be tested, and the compatibility is strong, which brings great convenience to the use of the testers.

[0061] According to some embodiments of the present application, as shown in Figure 1, the open circuit voltage testing device of the battery also includes a first driving member 12, which is arranged on the transmission component 10, and the first driving member 12 is connected to the first code scanning member 11, and is used to drive the first code scanning member 11 to move along the first direction.

[0062] In this embodiment, the first driving member 12 may be a linear module, a cylinder, an electric telescopic rod, etc. The specific one may be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0063] As shown in Figure 1, the first drive member 12 is fixed to the conveyor assembly 10 and positioned above the conveyor assembly 10. The first barcode scanning member 11 is connected to the first drive member 12. When the battery 111, driven by the conveyor assembly 10, moves below the first barcode scanning member 11, the conveyor assembly 10 stops moving. At this time, the first drive member 12 drives the first barcode scanning member 11 to move along the X-axis. When the scanning head on the first barcode scanning member 11 aligns with the position of the graphic code on the rightmost battery 111, the first barcode scanning member 11 begins scanning. Simultaneously, the first drive member 12 drives the first barcode scanning member 11 to move at a constant speed to the left along the X-axis. After the first barcode scanning member 11 scans each battery 111 on the conveyor assembly 10 from right to left, the conveyor assembly 10 resumes movement.

[0064] By driving the first scanning component 11 to move along the X-axis by the first driving component 12, it can be ensured that the position of the first scanning component 11 corresponds to the position of each battery on the transmission component 10, which is conducive to the first scanning component 11 scanning the graphic code on each battery.

[0065] According to some embodiments of the present application, as shown in Figure 1, the open circuit voltage testing device of the battery also includes a tray 13, and the conveying assembly 10 includes a first frame 101 and a first conveyor line 102, wherein the first conveyor line 102 is arranged on the first frame 101, the first driving member 12 is arranged on the first frame 101, and the tray 13 is arranged on the first conveyor line 102, and the first conveyor line 102 is used to drive the tray 13 to move along the first direction.

[0066] In this embodiment, the first conveyor line 102 can be a belt conveyor line or a rolling conveyor line, which can be determined according to actual conditions and is not limited in this embodiment of the present specification.

[0067] As shown in Figure 3, the first frame 101 includes a first platform 1011 and a first bracket 1012, wherein the first bracket 1012 is fixed on the first platform 1011, and the upper end of the first bracket 1012 is located above the first platform 1011, the first conveyor line 102 is installed on the first platform 1011, the first driving member 12 is fixed at the upper end of the first bracket 1012, and the first driving member 12 can drive the first code scanning member 11 to move along the X-axis.

[0068] When testing is required, the batteries to be tested only need to be placed on the tray 13 and then tested. There is no need to place the batteries one by one on the first conveyor line 102, which makes testing more convenient.

[0069] According to some embodiments of the present application, as shown in Figure 4, the tray 13 includes a base plate 131 and at least two clamping parts, the base plate 131 is arranged on the first conveyor line 102, the two clamping parts are arranged on the base plate 131 at intervals along the first direction, and the distance between the two clamping parts is adjustable.

[0070] For example, the present application provides a clamping portion at each end of the base plate 131 along the X-axis. When multiple batteries are placed between the two clamping portions on the base plate 131, the distance between the two clamping portions is adjusted so that the clamping portions and the batteries, and the batteries themselves, abut against each other. This ensures that the multiple batteries are stably positioned on the base plate 131, preventing the batteries on the base plate 131 from shaking when the first conveyor line 102 is in motion. Of course, it is understood that the structure of providing two clamping portions on the base plate 131 in the present application is merely an example, and the specific configuration can be determined based on actual conditions. This is not limited in the embodiments of this specification.

[0071] According to some embodiments of the present application, as shown in Figure 4 and in combination with Figure 5, the clamping portion includes a clamping plate 132, a movable plate 133, a connecting column 134, an elastic member 135 and a top plate 136, wherein the clamping plate 132 is arranged on the bottom plate 131 along the second direction, the movable plate 133 is located on the side of the clamping plate 132 away from the battery, and the top plate 136 is located on the side of the clamping plate 132 facing the battery; one end of the connecting column 134 is connected to the movable plate 133, and the other end passes through the clamping plate 132 and is connected to the top plate 136, and the connecting column 134 can move relative to the clamping plate 132 along the first direction; the elastic member 135 is sleeved on the connecting column 134, and one end of the elastic member 135 abuts against the clamping plate 132, and the other end abuts against the top plate 136, wherein the second direction is the height direction of the bottom plate 131, and the second direction is perpendicular to the first direction.

[0072] As shown in FIG1 , the second direction in the embodiment of this specification may be the Z-axis direction. The elastic member 135 may be deformable under an external force and return to its original shape after the external force is removed. The elastic member 135 may be elastically compressed in the X-axis direction. The elastic member 135 may be made of metal or non-metallic material, such as a leaf spring, a coil spring, a gas spring, a rubber spring, etc. The specific material may be determined according to actual conditions and is not limited in this embodiment of this specification.

[0073] In the present application, a clamping plate 132 is fixed at both ends of the base plate 131 along the X-axis direction. The clamping plate 132 is perpendicular to the upper surface of the base plate 131 along the Z-axis. A through hole is set on the clamping plate 132 along the X-axis direction. One end of the connecting column 134 is threadedly connected to the movable plate 133, and the other end passes through the through hole and is threadedly connected to the top plate 136. The connecting column 134 is loosely matched with the through hole, and the elastic member 135 is sleeved on the connecting column 134, and one end of the elastic member 135 abuts against the clamping plate 132, and the other end abuts against the top plate 136.

[0074] In this embodiment, the elastic member 135 is initially mounted on the connecting post 134 between the clamping plate 132 and the top plate 136 in a natural state. When a predetermined number of batteries 111 are placed between the two top plates 136, the elastic member 135 is compressed, and adjacent batteries 111 abut against each other in sequence, thereby ensuring that the multiple batteries 111 are stably positioned on the bottom plate 131.

[0075] When the battery 111 on the bottom plate 131 needs to be replaced, it is only necessary to pull the movable plate 133 with external force. The movable plate 133 drives the top plate 136 to move through the connecting column 134. The top plate 136 compresses the elastic member 135 under the action of the external force. When the elastic member 135 is compressed, the top plate 136 can move toward one side of the clamping plate 132, thereby increasing the distance between the two top plates 136 on the bottom plate 131, and then the multiple batteries 111 located between the two top plates 136 will no longer be squeezed. The multiple batteries 111 are relatively loose, so that the corresponding batteries 111 can be easily replaced.

[0076] It should be noted that the above-described structure of the clamping portion is merely an example. In other alternative solutions, other structures may also be adopted. For example, the clamping portion may include a leaf spring and a plate, with one end of the leaf spring fixed to the base plate and the other end connected to the plate. This application does not impose any particular restrictions on the specific structure of the clamping portion, as long as the above-described connection structure can achieve the purpose of this application.

[0077] According to some embodiments of the present application, as shown in Figure 1 in combination with Figure 2, the open circuit voltage testing device of the battery also includes a second rack 19, wherein the second rack 19 is arranged downstream of the first rack 101 along the first direction; the first conveyor line 102 on the conveying assembly 10 is arranged on the first rack 101 and the second rack 19, and the test piece 14 is arranged on the second rack 19.

[0078] The downstream in the embodiment of this specification refers to the X-axis direction, and the second rack 19 is arranged on the left side of the first rack 101 .

[0079] In this embodiment, as shown in FIG3 , the second frame 19 includes a second platform 191 and a second bracket 192, and the second bracket 192 is fixed above the second platform 191. The first conveyor line 102 is disposed on the first platform 1011 and the second platform 191 on the first frame 101. As shown in FIG2 , the test piece 14 is fixed on the second bracket 192, and the test piece 14 is located above the first conveyor line 102. The provision of the second bracket 192 facilitates the fixing of the test piece 14 in the present application.

[0080] According to some embodiments of the present application, as shown in Figure 6 and in combination with Figure 7, the test piece 14 also includes a mounting base 141, which is arranged on the second frame 19. At the same time, a plurality of elongated holes 1411 are provided on both sides of the mounting base 141 along the first direction, and a test probe 142 is correspondingly provided in each elongated hole 1411, and the fixed position of the test probe 142 relative to the elongated hole 1411 is adjustable.

[0081] As shown in FIG7 , the present application provides a plurality of elongated holes 1411 on both sides of the mounting base 141 along the X-axis direction. For example, eight or ten elongated holes 1411 are provided on each side, and the specific number can be determined according to actual conditions. The upper end of the test probe 142 is connected with a bolt, which passes through the elongated hole 1411 and is then fixed with a nut. When the position of the test probe 142 needs to be adjusted, the corresponding nut is loosened by external force, and the position of the bolt connected to the test probe 142 is moved along the X-axis in the elongated hole 1411. After the position of the bolt is moved, the corresponding nut is tightened, thereby completing the adjustment of the position of the test probe 142.

[0082] Of course, it is understandable that the above-mentioned test probe and mounting base can also be other connection structures. For example, the test probe is connected to the mounting base through a cylinder. The specific connection structure can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0083] In this embodiment, since the mounting base 141 is provided with a plurality of elongated holes 1411 on both sides along the X-axis, and each elongated hole 1411 is correspondingly provided with a test probe 142, multiple test probes 142 can be installed together on the mounting base 141. Since each test probe 142 is fixed in a corresponding elongated hole 1411, the spacing between two adjacent test probes 142 can be adjusted by adjusting the relative position of the test probe 142 in the elongated hole 1411, so that the position of each test probe 142 corresponds to the position of each battery on the tray 13. In this way, when the multiple batteries on the tray 13 are moved to the position of the test probe 142 under the drive of the first conveyor line 102, the multiple batteries on the tray 13 can be tested at one time, thereby improving the testing efficiency.

[0084] According to some embodiments of the present application, as shown in FIG3 , the open circuit voltage testing device of the battery further includes a third driving member 23 , which is disposed on the second frame 19 and is connected to the mounting base 141 for driving the mounting base 141 to move along the first direction and the second direction.

[0085] In this embodiment, the first direction is the X-axis direction, and the second direction is the Z-axis direction. The third driving member 23 can be two linear modules, two cylinders, or two electric telescopic rods, etc., which are not limited in this embodiment of the present invention. The following description takes the third driving member 23 as two linear modules as an example.

[0086] For example, the third drive member 23 includes a first linear module and a second linear module. The second linear module is fixed to the slider on the first linear module, and the mounting base 141 is fixed to the slider on the second linear module. The first linear module, through the second linear module, can drive the mounting base 141 along the X-axis, while the second linear module can drive the mounting base 141 along the Z-axis. In this way, the two linear modules on the third drive member 23 can drive the test probe 142 on the mounting base 141 to move along the X-axis and the Z-axis.

[0087] When the multiple batteries on the tray 13 are driven by the first conveyor line 102 to the position of the test probe 142, the third driving member 23 drives the test probe 142 to move in the X-axis and Z-axis through the mounting seat 141, so that the test probe 142 contacts or moves away from the electrode terminals on the battery. The high degree of automation brings convenience to OCV testing.

[0088] According to some embodiments of the present application, as shown in Figure 1 and in combination with Figure 2, the open circuit voltage testing device of the battery also includes a second conveyor line 15, the second conveyor line 15 is arranged on the second frame 19, and the conveying direction of the second conveyor line 15 is perpendicular to the conveying direction of the first conveyor line 102; when the battery on the tray 13 fails the scan code or test, the second conveyor line 15 drives the tray 13 on the first conveyor line 102 to move.

[0089] In this embodiment, the conveying direction of the second conveyor line 15 is the Y-axis direction. The second conveyor line 15 can be a roller conveyor line, which can be determined according to actual conditions. The following description takes the first conveyor line 102 and the second conveyor line 15 as an example of roller conveyor lines.

[0090] The first conveyor line 102 is provided with a plurality of first rollers that can rotate about the Y axis. Meanwhile, a second roller that can rotate about the X axis is provided between two or three adjacent first rollers. The second conveyor line 15 is provided with a plurality of third rollers that can rotate about the X axis. Referring to FIG1 , when the first rollers rotate, the trays on the first conveyor line 102 can move along the X axis. When the second rollers rotate, the trays on the first conveyor line 102 can move along the Y axis. When the third rollers rotate, the trays of the flower girls on the second conveyor line 15 can move along the Y axis.

[0091] During the inspection, when the first conveyor line 102 is in normal motion, the first roller rotates and the second roller does not rotate. At this time, the tray 13 on the first conveyor line 102 moves along the X-axis direction driven by the first roller.

[0092] When the batteries on the tray 13 on the first conveyor line 102 fail the code scanning or test, the second roller on the first conveyor line 102 rotates, and the first roller does not rotate. At the same time, the third roller on the second conveyor line 15 rotates, and the starting end of the second conveyor line 15 is in close contact with one side of the first conveyor line 102 along the Y-axis direction. In this way, when the second roller rotates and the first roller does not rotate, the tray 13 can move along the Y-axis. When the tray 13 moves to the third roller driven by the second roller, the third roller continues to drive the tray 13 to move along the Y-axis, so that the tray 13 on the first conveyor line 102 together with the batteries on the tray 13 can be transferred to the second conveyor line 15. At this time, the batteries to be tested can be put back on the first conveyor line 102, avoiding interruption of the detection process and improving detection efficiency.

[0093] According to some embodiments of the present application, as shown in FIG. 1 or FIG. 2 , the battery open circuit voltage testing device further includes a replacement table 16 , which is disposed on the second frame 19 and is used to place batteries on the tray 13 on the second conveyor line 15 .

[0094] In this embodiment, the replacement table 16 can be specifically used to place batteries on the trays 13 transported from the second conveyor line 15. In this way, when the second conveyor line 15 transports the batteries on the trays 13 to the set position, the corresponding batteries can be placed on the replacement table 16. After manually replacing the batteries that failed the code scanning or testing, all batteries on the replacement table 16 are placed on the second conveyor line 15. At this time, the second conveyor line 15 reverses and drives the corresponding trays 13 to move in the opposite direction along the Y axis to the side of the first conveyor line 102 along the X axis. Referring to the description above, the first roller on the first conveyor line 102 is controlled to stop rotating and the second roller on the first conveyor line 102 is controlled to rotate in the opposite direction. In this way, the trays 13 on the second conveyor line 15 can be transferred to the first conveyor line 102. When the trays 13 move along the Y axis to the middle position of the first conveyor line 102, the second roller stops rotating. At this time, the first roller is controlled to rotate again, so that the replaced batteries can be retested.

[0095] According to some embodiments of the present application, as shown in Figure 1 and in combination with Figure 3, the open circuit voltage testing device of the battery also includes a control cabinet 20 and a plurality of indicator lights 24, wherein the control cabinet 20 is arranged on the second frame 19, and the first code scanning piece 11 and the test piece 14 are electrically connected to the controller in the control cabinet 20 respectively; the plurality of indicator lights 24 are all arranged on the replacement table 16, and each indicator light 24 is electrically connected to the controller. When the battery on the second conveyor line 15 is placed on the replacement table 16, the controller controls the corresponding indicator light 24 to start.

[0096] For example, in this embodiment, a total of ten batteries are installed on the tray 13, and the ten batteries are numbered as ①, ②, , ⑩ from right to left. At the same time, the replacement station 16 is also provided with ten battery placement slots, and the ten battery placement slots are numbered as ①, ②, , ⑩ from right to left. The ten indicator lights 24 are numbered as ①, ②, , ⑩, among which indicator light 24 No. 1 is set on battery placement slot No. ①, and so on, indicator light 24 No. 10 is set on battery placement slot No. 10.

[0097] After the ten batteries are scanned by the first barcode scanning component 11, assuming that the barcode of battery No. 5 is unclear and the service life of battery No. 6 has expired, and the barcodes of the other batteries are qualified, the first barcode scanning component 11 will send the scanning information of battery No. 5 and battery No. 6 to the controller.

[0098] Subsequently, the ten batteries on the tray 13 are driven by the first conveyor line 102 to move to the bottom of the test piece 14. The first conveyor line 102 stops moving, and the ten test probes 142 on the test piece 14 perform OCV tests on the ten batteries again. Assuming that the OCV test of battery No. 4 fails, and the tests of other batteries pass, at this time, the test piece 14 sends the test information of battery No. 4 to the controller.

[0099] Subsequently, referring to the description above, the pallet on the first conveyor line 102 and the batteries on the pallet are transferred to the second conveyor line 15. After the second conveyor line 15 moves the pallet and the batteries on the pallet to the position of the replacement station, the second conveyor line 15 stops moving, and the ten batteries on the pallet are manually placed into the ten battery placement slots in the corresponding order. Finally, the controller controls the indicator lights 4, 5 and 6 to light up, so as to facilitate the inspection personnel to quickly find unqualified batteries, which is conducive to the rapid replacement of batteries.

[0100] According to some embodiments of the present application, as shown in Figure 1 or Figure 2, the open circuit voltage testing device of the battery also includes a second code scanning component 17, which is arranged on the second frame 19 and is used to scan and read the graphic code of the replaced battery on the second conveyor line 15.

[0101] In this embodiment, the structure of the second code scanning component 17 is the same as that of the first code scanning component 11 , and will not be described in detail here.

[0102] As described above, after the unqualified battery is replaced, the second conveyor line 15 conveys the replaced battery to the first conveyor line 102. At this time, the second barcode scanning component 17 is located above the replaced battery, so that the graphic code of the replaced battery can be easily scanned to avoid the replaced battery entering the OCV test process without being scanned.

[0103] According to some embodiments of the present application, as shown in Figure 1 or Figure 2, the open circuit voltage testing device of the battery also includes a second driving member 18, which is arranged on the second frame 19, and the second driving member 18 is connected to the second code scanning member 17, and is used to drive the second code scanning member 17 to move along the first direction.

[0104] In this embodiment, the first driving member 12 may be a linear module, a cylinder, an electric telescopic rod, etc. The specific one may be determined according to actual conditions, and this embodiment of the specification does not limit this.

[0105] 2 or 3 , the second driving member 18 is fixed to the second bracket 192 on the second frame 19 , and the second code scanning member 17 is connected to the second driving member 18 . At the same time, the second driving member 18 can drive the second code scanning member 17 to move along the X-axis.

[0106] When the replaced battery is transferred from the second conveyor line 15 to the first conveyor line 102, the first conveyor line 102 stops moving, and the second barcode scanning component 17 is located above the replaced battery. By controlling the second driving component 18 to drive the second barcode scanning component 17 to move along the X-axis direction, the position of the second barcode scanning component 17 can be adjusted so that the position of the second barcode scanning component 17 corresponds to the position of the replaced battery, which is conducive to the scanning of the second barcode scanning component 17.

[0107] According to some embodiments of the present application, as shown in FIG1 , the open circuit voltage test device of the battery further includes a display 21 , which is disposed on the second frame 19 , and the first code scanning component 11 , the second code scanning component 17 and the test component 14 are electrically connected to the display 21 , respectively.

[0108] The display 21 in this embodiment is provided with a corresponding display screen, so that the detection results of the first code scanning component 11, the second code scanning component 17 and the test component 14 can be displayed on the display screen, thereby bringing convenience to the inspection personnel.

[0109] According to some embodiments of the present application, as shown in FIG3 , the battery open circuit voltage test device further includes a fourth driving member 25 , which is disposed on the second frame 19 and is configured to drive the movable plate 133 to move along the first direction.

[0110] As shown in FIG8 , the fourth driving member 25 includes a cylinder 251, a fixed plate 252, a push plate 253, a movable plate 254, a guide rail 255, a slider 256, and a claw hook 257. The fixed plate 252 is fixed to the second platform 191, the cylinder 251 is fixed to the fixed plate 252, a guide rail 255 is provided on one side of the fixed plate 252 along the extension and contraction direction of the cylinder 251, the slider 256 is slidably connected to the guide rail 255, the claw hook 257 is connected to the slider 256, the slider 256 is connected to the movable plate 254, the movable plate 254 is connected to the push plate 253, and the push plate 253 is connected to the extension end of the cylinder 251. During use, the cylinder 251 drives the push plate 253 to move, and the push plate 253 drives the slider 256 to move relative to the guide rail 255 via the movable plate 254. When the slider 256 moves, the claw hook 257 is driven to move. During use, when the cylinder 251 drives the claw hook 257 to move to a specified position, the claw hook 257 is clamped on the movable plate 133, and then the cylinder 251 drives the claw hook 257 to move in the opposite direction to realize the movement of the movable plate 133 along the X-axis.

[0111] It should be noted that the structure of the fourth drive member described above is merely an example. In other alternative solutions, other structures may also be adopted. For example, the fourth drive member may be a screw motor structure, and the screw nut on the screw motor is provided with a claw. This application does not impose any particular restrictions on the specific structure of the fourth drive member, as long as the above connection structure can achieve the purpose of this application.

[0112] Since the fourth driving member 25 in this embodiment can drive the movable plate 133 to move along the X-axis, it can easily drive the top plate 136 to move, so that the batteries located between the two top plates 136 can be quickly loosened or compressed. When the second conveyor line 15 moves the tray 13 together with the batteries on the tray 13 to the replacement station 16, the second conveyor line 15 stops moving. At this time, the fourth driving member 25 is used to quickly loosen the top plate 136, and the batteries on the tray 13 can be easily removed from the tray 13.

[0113] According to some embodiments of the present application, as shown in FIG3 , the battery open circuit voltage test device further includes a switch 26 , which is disposed on the second frame 19 and electrically connected to the fourth driving member 25 .

[0114] In this embodiment, the switch 26 is provided on the second platform 191 on the second frame 19 , so that when the fourth driving member 25 needs to be opened or closed, it is only necessary to press the corresponding switch 26 , thereby facilitating the control of the fourth driving member 25 .

[0115] According to some embodiments of the present application, as shown in FIG1 and in conjunction with FIG9 , the battery open circuit voltage test device further includes a storage rack 22 for storing replacement batteries, and the storage rack 22 is disposed on the second rack 19. The provision of the storage rack 22 in this embodiment facilitates the storage of replaced batteries.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application, and they should all be included in the scope of the claims and specification of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in the various embodiments can be combined in any way. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

Claims

1. An open-circuit voltage testing device for a battery, characterized in that, include: A transmission assembly (10) for driving the battery to move along a first direction; a first code scanning component (11), the first code scanning component (11) being located above the conveying component (10), and being used to scan and read the graphic code on the battery when the battery on the conveying component (10) moves along a first direction to below the first code scanning component (11); as well as, A test piece (14), wherein the test piece (14) is arranged downstream of the first code scanning piece (11) along the first direction, a plurality of test probes (142) are arranged on the test piece (14), and the spacing between two adjacent test probes (142) along the first direction is adjustable; wherein the first direction is the transmission direction of the transmission component (10).

2. The open-circuit voltage testing device for the battery according to claim 1, wherein The invention also includes a first driving member (12), wherein the first driving member (12) is arranged on the transmission component (10), and the first driving member (12) is connected to the first code scanning member (11) and is used to drive the first code scanning member (11) to move along the first direction.

3. The open-circuit voltage testing device for the battery according to claim 2, characterized in that It also includes a tray (13), the conveying assembly (10) includes a first frame (101) and a first conveying line (102), and the first conveying line (102) is arranged on the first frame (101); The first driving member (12) is arranged on the first frame (101), the tray (13) is arranged on the first conveying line (102), and the first conveying line (102) is used to drive the tray (13) to move along the first direction.

4. The open-circuit voltage testing device for the battery according to claim 3, characterized in that The tray (13) comprises a bottom plate (131) and at least two clamping parts, wherein the bottom plate (131) is arranged on the first conveying line (102), and the two clamping parts are arranged on the bottom plate (131) at intervals along the first direction, and the distance between the two clamping parts is adjustable.

5. The open-circuit voltage testing device for the battery according to claim 4, characterized in that, The clamping portion includes a clamping plate (132), a movable plate (133), a connecting column (134), an elastic member (135) and a top plate (136); The clamping plate (132) is arranged on the bottom plate (131) along the second direction, the movable plate (133) is located on the side of the clamping plate (132) facing away from the battery, and the top plate (136) is located on the side of the clamping plate (132) facing the battery; one end of the connecting column (134) is connected to the movable plate (133), and the other end passes through the clamping plate (132) and is connected to the top plate (136), and the connecting column (134) can move relative to the clamping plate (132) along the first direction; The elastic member (135) is sleeved on the connecting column (134), and one end of the elastic member (135) abuts against the clamping plate (132), and the other end abuts against the top plate (136), wherein the second direction is the height direction of the bottom plate (131), and the second direction is perpendicular to the first direction.

6. The open-circuit voltage testing device for the battery according to claim 5, characterized in that, The machine also includes a second frame (19), wherein the second frame (19) is arranged downstream of the first frame (101) along the first direction; The first conveyor line (102) is arranged on the first frame (101) and the second frame (19), and the test piece (14) is arranged on the second frame (19).

7. The open-circuit voltage testing device for the battery according to claim 6, wherein, The test piece (14) further includes a mounting seat (141), and the mounting seat (141) is arranged on the second frame (19); On both sides of the mounting seat (141) along the first direction, a plurality of long holes (1411) are arranged, and a test probe (142) is correspondingly arranged in each long hole (1411), and the fixed position of the test probe (142) relative to the long hole (1411) is adjustable.

8. The open-circuit voltage testing device for the battery according to claim 7, wherein It further includes a third driving member (23), the third driving member (23) is arranged on the second frame (19), and the third driving member (23) is connected to the mounting seat (141) for driving the mounting seat (141) to move along the first direction and the second direction.

9. The open-circuit voltage testing device for the battery according to any one of claims 6-8, characterized in that, It further includes a second conveyor line (15), the second conveyor line (15) is arranged on the second frame (19), and the conveying direction of the second conveyor line (15) is perpendicular to the conveying direction of the first conveyor line (102); When the battery on the tray (13) fails in barcode scanning or testing, the second conveyor line (15) drives the tray (13) on the first conveyor line (102) to move.

10. The open-circuit voltage testing device for the battery according to claim 9, characterized in that, It further includes a replacement table (16), the replacement table (16) is arranged on the second frame (19) for placing the battery of the tray (13) on the second conveyor line (15).

11. The open-circuit voltage testing device for the battery according to claim 10, characterized in that, It further includes a control cabinet (20) and a plurality of indicator lights (24), the control cabinet (20) is arranged on the second frame (19), and the first barcode scanning member (11) and the test piece (14) are respectively electrically connected to a controller in the control cabinet (20); A plurality of the indicator lights (24) are all arranged on the replacement table (16), and each indicator light (24) is electrically connected to the controller. When the battery on the second conveyor line (15) is placed on the replacement table (16), the controller controls the corresponding indicator light (24) to start.

12. The open-circuit voltage testing device for the battery according to claim 9, characterized in that, It further includes a second barcode scanning member (17), the second barcode scanning member (17) is arranged on the second frame (19) for scanning and reading the barcode of the replaced battery on the second conveyor line (15).

13. The open-circuit voltage testing device for the battery according to claim 12, characterized in that It further includes a second driving member (18), the second driving member (18) is arranged on the second frame (19), and the second driving member (18) is connected to the second barcode scanning member (17) for driving the second barcode scanning member (17) to move along the first direction.

14. The open-circuit voltage testing device for the battery according to claim 12, characterized in that, It further includes a display (21), the display (21) is arranged on the second frame (19), and the first barcode scanning member (11), the second barcode scanning member (17) and the test piece (14) are respectively electrically connected to the display (21).

15. The open-circuit voltage testing device for the battery according to claim 6, wherein It further includes a fourth driving member (25), which is arranged on the second frame (19) and is used to drive the movable plate (133) to move along the first direction.

16. The open-circuit voltage testing device for the battery according to claim 15, wherein It further includes a switch (26), which is arranged on the second frame (19), and the switch (26) is electrically connected to the fourth driving member (25).

17. The open-circuit voltage testing device for the battery according to claim 6, characterized in that, It further includes a storage rack (22) for storing replacement batteries, and the storage rack (22) is arranged on the second frame (19).

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