Testing device and testing equipment

Abstract

The utility model discloses a testing device and testing equipment, and the testing device comprises a transportation assembly which is provided with a conveying plane for bearing and transporting a battery cell in a first direction; the testing assembly comprises two testing mechanisms which are arranged on the two sides, in the second direction, of the conveying plane correspondingly, each testing mechanism comprises two testing execution assemblies and two driving assemblies which are in driving connection with the two testing execution assemblies correspondingly, and the driving assemblies can drive the testing execution assemblies to ascend and descend in the third direction; the parameters of the battery cell are measured; and the adjusting mechanism is movably connected with at least one testing mechanism so as to adjust the distance between the two testing mechanisms in the second direction. According to the testing device for the battery cell, the testing assembly with the adjustable position is arranged, the two independent testing executing mechanisms are arranged on the testing assembly, and the adjusting mechanism used for adjusting the testing assembly is arranged, so that adjustment can be conveniently carried out after the battery cell is remodeled, and the testing device is compatible with testing of various battery cells.

Description

Technical Field

[0001] This disclosure generally relates to the field of testing technology. More specifically, this disclosure relates to a testing apparatus and testing equipment for battery cells. Background Technology

[0002] In the production process of lithium batteries, such as pouch cells, there are often steps that require testing the performance parameters of the cells. These steps involve connecting instruments such as voltage or resistance testers to the positive and negative terminals of the cell to measure relevant characteristic data. Existing testing equipment uses fixed-position probe assemblies, limiting its testing to a single cell specification. However, the electrode positions differ between cell specifications. Therefore, different testing equipment is required when testing different cell specifications. This increases equipment adjustment time when changing the battery specification to be produced during production, reducing production efficiency.

[0003] In view of this, there is an urgent need to provide a testing device and equipment solution for battery cells, so as to adapt to the testing of battery cells of different specifications by means of an adjustable testing mechanism, reduce equipment adjustment time, and improve production efficiency. Utility Model Content

[0004] In order to at least address one or more of the technical problems mentioned above, this disclosure provides a testing apparatus and testing equipment for battery cells in several aspects.

[0005] In a first aspect, this disclosure provides a testing apparatus for measuring battery cell performance parameters, comprising: a transport assembly having a transport plane for carrying and transporting the battery cell along a first direction; a testing assembly including two testing mechanisms respectively disposed on both sides of the transport plane along a second direction, each testing mechanism including two test execution components and two drive components drivably connected to the two test execution components respectively, the drive components being capable of driving the test execution components to rise and fall along a third direction, so that the test execution components measure the battery cell performance parameters, the first direction and the second direction being perpendicular to each other and parallel to the transport plane respectively, the third direction being perpendicular to the transport plane; and an adjustment mechanism movably connected to at least one testing mechanism to adjust the distance between the two testing mechanisms in the second direction.

[0006] In some embodiments, the transport assembly further includes a carrier device detachably disposed on the transport plane, the carrier device including a first carrier member having a plurality of arrayed first receiving slots, the first receiving slots having two first electrode slots on one side along a second direction, the two first electrode slots being spaced apart along a first direction; and / or, the carrier device including a second carrier member having a plurality of arrayed second receiving slots, the second receiving slots having a second electrode slot on each side along a second direction.

[0007] In some embodiments, two test execution components are spaced apart along a first direction, and the center distance between the two test execution components along the first direction is equal to the center distance between the two first tab slots corresponding to the first receiving slot; when the conveying plane carries the first carrier, the two test execution components are electrically connected to the battery tabs in the first tab slots respectively; when the conveying plane carries the second carrier, one of the two test execution components is electrically connected to the battery tab in the second tab slot.

[0008] In some embodiments, the test component further includes a detection module, which includes a voltage detection interface and a resistance detection interface, and the test execution component includes two detection probes, which are electrically connected to the voltage detection interface and the resistance detection interface, respectively.

[0009] In some embodiments, the drive component includes a vertical drive mechanism, which includes a fixed end and a movable end, the movable end of which is fixedly connected to the test execution component.

[0010] In some embodiments, the adjustment mechanism includes an adjustment part and a moving part that are driven together. The moving part is driven by the adjustment part to move along a second direction. At least one test mechanism is fixedly disposed on the moving part and moves with the moving part to adjust the distance between the two test mechanisms in the second direction.

[0011] In some embodiments, the adjustment mechanism includes two mechanisms, which are spaced apart along the second direction. The conveying plane is provided with adjustment grooves on both sides along the second direction. The adjustment grooves extend along the second direction, and the moving part is connected to the testing mechanism through the adjustment grooves.

[0012] In some embodiments, the adjustment part includes a lead screw assembly, the moving part includes a lead screw nut that is threadedly connected to the lead screw assembly, and the testing mechanism is fixedly connected to the lead screw nut.

[0013] In some embodiments, the conveying plane is provided with first limiting portions extending in a first direction and second limiting portions extending in a second direction at intervals. The distance between two adjacent first limiting portions matches the width of the first carrier and / or the second carrier, and the distance between two adjacent second limiting portions matches the length of the first carrier and / or the second carrier.

[0014] In a second aspect, this disclosure provides a testing apparatus including a testing device for battery cells according to the first aspect and several embodiments, and a supply component for storing battery cells and supplying battery cells to the testing device.

[0015] The battery cell testing apparatus provided above, through its adjustable testing component, two independent testing mechanisms on the component, and an adjustment mechanism for adjusting the component, allows for convenient adjustment after battery cell type change, ensuring compatibility with testing various battery cells. Furthermore, in some embodiments, using two different support devices enhances the cell's positioning effect, resulting in more accurate test results. Even further, in some embodiments, providing a lateral limiting portion inside the second support reduces the likelihood of jamming. Attached Figure Description

[0016] The above and other objects, features, and advantages of exemplary embodiments of this disclosure will become readily apparent upon reading the following detailed description with reference to the accompanying drawings. In the drawings, several embodiments of this disclosure are illustrated by way of example and not limitation, and like or corresponding reference numerals denote like or corresponding parts, wherein:

[0017] Figure 1a An exemplary front view of a single-sided tab battery cell is shown;

[0018] Figure 1b An exemplary front view of a dual-sided tab battery cell is shown;

[0019] Figure 2 An exemplary top view of a test apparatus according to some embodiments of this disclosure is shown;

[0020] Figure 3 It shows Figure 2 A magnified view of part A in the middle;

[0021] Figure 4 An exemplary perspective view of a test apparatus according to some embodiments of this disclosure is shown;

[0022] Figure 5 It shows Figure 4 A magnified view of part B in the middle section;

[0023] Figure 6 An exemplary perspective view of a test apparatus according to some embodiments of this disclosure is shown;

[0024] Figure 7 An exemplary top view of a test apparatus according to some embodiments of this disclosure is shown;

[0025] Figure 8 It shows Figure 7 A magnified view of part C in the middle;

[0026] Figure 9 An exemplary perspective view of a test apparatus according to some embodiments of this disclosure is shown;

[0027] Figure 10 It shows Figure 9 A magnified view of part D in the middle;

[0028] Figure 11 It shows Figure 9 A magnified view of a portion of part D under a changing state;

[0029] Figure 12 An exemplary side view of a test apparatus according to some embodiments of this disclosure is shown.

[0030] Explanation of reference numerals in the attached figures:

[0031] 10 – Transport component; 100 – Test device; 11 – Transfer mechanism; 111 – First limiting part; 112 – Second limiting part; 12 – Drive mechanism; 20 – Test component; 200 – Test equipment; 21 – Test mechanism; 211 – Test execution component; 212 – Drive component; 2121 – Fixed end; 2122 – Moving end; 213 – Connecting support; 214 – Insulation relay; 215 – Fixing frame; 22 – Detection module; 30 – Adjustment mechanism; 300 – Frame; 31 – Moving part; 31 1 - Adjustment handwheel; 32 - Adjustment part; 41 - First bearing member; 411 - First receiving groove; 412 - First electrode tab groove; 42 - Second bearing member; 421 - Second receiving groove; 422 - Second electrode tab groove; 424 - Lateral limiting part; 50 - Platform; 51 - Adjustment groove; 80 - Supply assembly; 91 - Single-ended battery cell; 911 - First battery cell body; 912 - Positive electrode tab; 913 - Negative electrode tab; 92 - Dual-ended battery cell; 921 - Second battery cell body; 922 - Positive electrode tab; 923 - Negative electrode tab. Detailed Implementation

[0032] The technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, not all of them. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0033] It should be understood that the terms “comprising” and “including” used in this disclosure and claims indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0034] It should also be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of this disclosure. As used in this disclosure and claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used in this disclosure and claims refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0035] As used in this specification and claims, the term "if" may be interpreted, depending on the context, as "when," "once," "in response to determination," or "in response to detection." Similarly, the phrase "if determined" or "if [described condition or event] is detected" may be interpreted, depending on the context, as "once determined," "in response to determination," "once [described condition or event] is detected," or "in response to detection of [described condition or event]."

[0036] The specific embodiments disclosed herein will now be described in detail with reference to the accompanying drawings.

[0037] In existing battery manufacturing processes, such as those for pouch lithium batteries, there is a step involving testing the performance parameters of the battery cells using testing equipment. In this process, equipment such as voltage-resistance testers is typically connected to the positive and negative terminals of the cell for testing. The testing apparatus usually uses a fixed-position probe assembly connected to the positive and negative terminals of the cell. However, in actual production, the specifications of the battery cell being tested often change, which in turn alters the positions of the positive and negative terminals. For example, see... Figure 1a and Figure 1b , Figure 1a An exemplary front view of a single-sided tab cell 91 is shown. Figure 1b An exemplary front view of a dual-sided tab battery cell 92 is shown. Both the single-sided tab battery cell 91 and the dual-sided tab battery cell 92 are among the various specifications of battery cells. The positive tab 912 and the negative tab 913 of the single-sided tab battery cell 91 are both disposed on the same side of its first cell body 911, while the positive tab 922 and the negative tab 923 of the dual-sided tab battery cell 92 are respectively disposed on two opposite sides of its second cell body 921.

[0038] When the battery cell to be tested is changed from a single-sided tab cell 91 to a double-sided tab cell 92, the probe assembly of the aforementioned testing equipment 200 cannot be aligned with the changed positive and negative terminals. This necessitates replacing the probe assembly or even the entire testing equipment 200. This will have a significant adverse impact on production efficiency and maintenance costs.

[0039] In view of this, the present disclosure provides a testing apparatus 100 and a testing device 200, which, by setting an adjustable testing mechanism, can adapt to the testing of battery cells of different specifications, reduce equipment adjustment time, and improve production efficiency.

[0040] The specific embodiments of this disclosure will now be described in detail with reference to the accompanying drawings. In this embodiment, for ease of description, the following will be used... Figure 4 The plane on which the transport component carries the workpiece is defined as the transport plane. The transport direction of the transport component to the workpiece is defined as the first direction, and the direction perpendicular to the workpiece's movement direction is defined as the second direction. Both the first and second directions are parallel to the transport plane. The direction perpendicular to the transport plane is defined as the third direction. The positions and orientations of other related mechanisms and components in this disclosure are described based on this. The above spatial descriptions are merely illustrative and do not constitute a limitation on the actual installation positions and orientations of the components in this disclosure.

[0041] See also Figure 2 and Figure 4 , Figure 2 An exemplary top view of a test apparatus 100 according to some embodiments of this disclosure is shown. Figure 4 An exemplary perspective view of a test apparatus 100 according to some embodiments of this disclosure is shown. Figure 2 and Figure 4 The diagram also shows a single-sided output tab cell 91 to illustrate its positional relationship with the test apparatus 100. (The last sentence appears to be incomplete and possibly contains errors.) Figure 2 and Figure 4 In the illustrated embodiment, the testing apparatus 100 includes a transport component 10, a testing component 20, and an adjustment mechanism 30. The transport component 10 carries and transports a single-sided tab battery cell 91, while the testing component 20 is electrically connected to the single-sided tab battery cell 91 to establish a test circuit for measuring battery performance parameters. The adjustment mechanism 30 is drivably connected to the testing component 20, thereby adjusting the position of the testing component 20 relative to the transport component 10 to facilitate corresponding adjustments when the specifications of the battery cell under test change, enabling the testing component 20 to form an electrical connection with the modified battery cell.

[0042] Specifically, see also Figure 4 and Figure 5 , Figure 5 It shows Figure 4A partially enlarged schematic diagram of section B. The testing device 100 for battery cells also includes a platform 50, and a transport assembly 10 includes a transfer mechanism 11 and a drive mechanism 12 disposed on the platform 50. The transfer mechanism 11 is provided with a first carrier 41 for carrying and transferring a single-sided tab battery cell 91. In this embodiment, the first carrier 41 is generally square plate-shaped and is detachably disposed on the transfer mechanism 11 by means of snap-fit ​​or other means. Multiple single-sided tab battery cells 91 are disposed on the first carrier 41 and limited by the first carrier 41. In this embodiment, the drive mechanism 12 is a motor, and the transfer mechanism 11 is a conveyor belt driven by the motor. The conveyor belt is disposed along a horizontal first direction and is capable of transferring the first carrier 41 together with the single-sided tab battery cells 91 thereon along the first direction. The test assembly 20 includes a detection module 22 and two test mechanisms 21 electrically connected to the detection module 22. The two test mechanisms 21 are spaced apart from each other and opposite each other along a second direction perpendicular to the first direction on both sides of the transfer mechanism 11. Each test mechanism 21 includes two test execution components 211 for electrically connecting to the single-sided tab battery cell 91, and two drive components 212 respectively connected to the two test execution components 211. The detection module 22 is electrically connected to the test mechanism 21 to form a detection loop and adjust the detection parameters. The drive components 212 are used to drive the test execution components 211 to move along a third direction to approach and abut against the positive and negative tabs of the battery cell.

[0043] Those skilled in the art will understand that although the above description includes a transport assembly 10 comprising a motor and a conveyor belt driven by the motor, this disclosure does not limit the specific composition of the transport assembly 10. For example, it may be a support platform driven by a linear motor, or a plurality of fixtures arranged at intervals along a first direction and connected sequentially by transmission chains. Furthermore, in some embodiments not shown, the transport assembly 10 may also include a plurality of transfer mechanisms 11 arranged side by side along the first direction, and each transfer mechanism 11 may operate independently of the others to improve overall inspection efficiency.

[0044] In addition, see also Figure 6 , Figure 6An exemplary perspective view of a testing apparatus 100 according to some embodiments of this disclosure is shown. In this embodiment, two adjustment mechanisms 30 are disposed on the underside of a platform 50. Each adjustment mechanism 30 includes an adjustment portion 32 fixed relative to the platform 50 and a movable portion 31 movable relative to the adjustment portion 32. In this embodiment, the adjustment portion 32 is a lead screw assembly, and the movable portion 31 is a lead screw nut threadedly connected to the lead screw of the lead screw assembly. The lead screw assembly includes a lead screw extending in a second direction and two lead screw seats disposed at both ends of the lead screw. The lead screw seats of the adjustment portion 32 are fixedly connected to the underside of the platform 50 by bolts or other means, while the movable portion 31 is fixedly connected to the bottom of a testing mechanism 21 via an adjustment groove 51 extending in the second direction on the platform 50. The adjustment portion 32 also includes an adjustment handwheel 311 disposed at one end of the lead screw assembly. With the aid of the adjustment handwheel 311, the operator can easily rotate the lead screw to drive the testing mechanism 21 to move in the second direction, thereby quickly completing the changeover adjustment. The moving parts 31 of the two adjustment mechanisms 30 are fixedly connected to the bottom of a test component 20, so that the positions of the two test components 20 can be adjusted from both sides along the second direction by means of the adjustment mechanisms 30.

[0045] Those skilled in the art will understand that while the above embodiments describe a scheme in which two adjustment mechanisms 30 are provided below the platform 50, this disclosure does not limit the specific arrangement or number of adjustment mechanisms 30. For example, the adjustment mechanism 30 can be placed on the upper side of the platform 50, or a guide rail assembly extending along the second direction can be provided, and the test component 20 can be simultaneously connected to the moving part 31 of the adjustment mechanism 30 and the slide rail of the guide rail assembly, so as to reduce adjustment errors by guiding the test component 20 with the help of the slide rail assembly. In addition, in some embodiments not shown, only one adjustment mechanism 30 may be provided and driven to one of the two oppositely arranged test components 20. Thus, by setting the relative positions between the carrying device and the test component 20, and using the position of the test component 20 not connected to the adjustment mechanism 30 as a reference, the cells on the transfer mechanism 11 are first positioned along the first and second directions, so that the tabs of the test cells of various specifications are aligned with the test execution component 211 of the test component 20 not connected to the adjustment mechanism 30. The changeover adjustment is then completed via a single-sided operation adjustment mechanism 30, thereby reducing the adjustment time required during the changeover process.

[0046] See Figure 2 and Figure 3 , Figure 3 It shows Figure 2A partially enlarged schematic diagram of part A. In this embodiment, the first carrier 41 is used to carry a single-sided tab cell 91. The first carrier 41 is provided with a plurality of first receiving slots 411 that open upward along a third direction, wherein the plurality of first receiving slots 411 are arranged in two rows spaced apart along a second direction. In the two first receiving slots 411 that are opposite each other along the second direction, each first receiving slot 411 has two first tab slots 412 on the side of the first receiving slot 411 that is away from the other first receiving slot 411 along the second direction, and the two first tab slots 412 are spaced apart along the first direction. By setting the dimensions of the first receiving groove 411, the first tab groove 412, and the spacing between the two first tab grooves 412, the length and width dimensions of the first receiving groove 411 are matched with the length and width dimensions of the first cell body 911 of the single-sided tab cell 91, and the dimensions and relative positions of the two first tab grooves 412 are matched with the dimensions and positions of the positive tab 912 and the negative tab 913 of the single-sided tab cell 91, thus achieving the limiting of the shape fit of the single-sided tab cell 91.

[0047] See also Figure 7 and Figure 8 , Figure 7 An exemplary top view of a test apparatus 100 according to some embodiments of this disclosure is shown, wherein the test apparatus 100 will be used according to Figure 2 In the embodiment, the first support member 41 of the test device 100 that carries the single-sided tab cell 91 is replaced with a second support member 42 that carries the double-sided tab cell 912. Figure 8 It shows Figure 7 A partially enlarged schematic diagram of section C. In this embodiment, the testing device 100 includes a second support member 42 for supporting a dual-sided tab battery cell 92. The second support member 42 has multiple second receiving slots 421 that open upwards along a third direction, arranged at intervals along a first direction. On both sides of the second receiving slots 421 along a second direction, second tab grooves 422 are provided for accommodating the positive tab 922 and negative tab 923 of the dual-sided tab battery cell 92. Similar to the first support member 41, the size of the second receiving slots 421 can be matched with the size of the second cell body 921 of the dual-sided tab battery cell 92, and the size and relative position of the two second tab grooves 422 can also match the positions of the two positive and negative tabs of the dual-sided tab battery cell 92 to form a shape fit with the dual-sided tab battery cell 92 and limit its position.

[0048] In addition, in such Figure 7 and Figure 8In the described embodiment, the second support member 42 is further provided with a lateral limiting portion 424 for limiting the main body of the second battery cell along the width direction of the dual-sided tab battery cell 92. This lateral limiting portion 424 is a limiting notch formed by the groove wall of the second receiving groove 421 recessed into the bottom wall of the second receiving groove 421 in a third direction. This lateral notch defines the position of the dual-sided tab battery cell 92 and reduces the possible contact area between the dual-sided tab battery cell 92 and the inner wall of the second receiving groove 421. Therefore, while achieving the limiting function, the probability of jamming or tilting due to the edge of the aluminum-plastic film on the outer periphery of the battery cell contacting the inner wall of the receiving groove is reduced.

[0049] Those skilled in the art will understand that the first carrier 41 and the second carrier 42 described above are both carrier devices for accommodating battery cells. Both carrier devices are detachably mounted on the transport plane of the transport assembly 10. By setting two different carrier devices, the limiting effect on the battery cells can be enhanced, making the test results more accurate. When it is necessary to test battery cells with more different specifications, the structure of the carrier device can be further adjusted accordingly to provide good limiting for the battery cells. This disclosure does not limit the specific shape and limiting method of the carrier device. For example, in some embodiments not shown, the carrier device may be provided with multiple limiting blocks protruding along a third direction, and the multiple limiting blocks enclose a limiting area corresponding to the contour of the battery cell. Alternatively, the carrier device may include multiple elastic clamps to elastically clamp and position the battery cell along a first direction and / or a second direction, etc. In addition, in some embodiments not shown, a longitudinal limiting part may be provided on the first carrier 41 and / or the second carrier 42. The longitudinal limiting part may be a longitudinal protrusion protruding inward from the inner wall of the first receiving groove 411 or the second receiving groove 421 along the second direction, which can further reduce the probability of the battery cell getting stuck in the carrier device.

[0050] See you again Figure 2 and Figure 4 The upper surface of the transfer mechanism 11 is also provided with a plurality of first limiting portions 111 spaced apart along a second direction and a plurality of second limiting portions 112 spaced apart along the first direction. Both the first limiting portions 111 and the second limiting portions 112 are limiting blocks that protrude upwards along a third direction from the upper surface of the transfer mechanism 11. The distance between two adjacent first limiting portions 111 matches the width of the carrying device, and the distance between two adjacent second limiting portions 112 matches the length of the carrying device, respectively used to limit the edges of the carrying device in each direction, thus defining the position of the carrying device on the upper surface of the transfer mechanism 11. The first limiting portions 111 extend into an elongated shape along the first direction, and the second limiting portions 112 extend into an elongated shape along the second direction to increase the contact area with the carrying device.

[0051] Using the aforementioned carrier devices, such as the first carrier 41 and the second carrier 42, the positions of the single-sided tab battery cell 91 and the double-sided tab battery cell 92 relative to the carrier devices are fixed. Furthermore, the positions of the battery cells relative to the transfer mechanism 11 are fixed by the first limiting part 111 and the second limiting part 112. By setting the external dimensions of the first carrier 41 and the second carrier 42 to be completely equal, the carrier devices can be directly replaced when the specifications of the battery cell to be tested change, improving production efficiency during model changeovers.

[0052] See you again Figure 4 and Figure 5 Two drive components 212 and corresponding test execution components 211 are spaced apart along a first direction, wherein each test execution component 211 includes two detection probes. The detection probes of the two test execution components 211 are respectively used to contact the positive electrode 912 and negative electrode 913 of the single-sided tab cell 91 to form a test circuit to test the performance parameters of the cell. Specifically, the two detection probes of each test execution component 211 are used for voltage measurement and resistance measurement, respectively. Specifically, the probe for voltage measurement in the test execution component 211 is electrically connected to the voltage detection interface of the detection module 22, while the probe for resistance measurement in the test execution component 211 is electrically connected to the resistance detection interface of the detection module 22. Thus, when the transfer mechanism 11 moves the single-sided tab cell 91 to a position vertically below the test execution component 211, the drive component 212 drives the test execution component 211 to descend, causing the detection probes to contact the corresponding positive electrode 912 and negative electrode 913. This will enable the two pairs of detection probes corresponding to the two test execution components 211 to form a circuit for voltage detection and a circuit for resistance detection with the cell under test, respectively.

[0053] Furthermore, each detection probe extends along a third direction, and the two detection probes of the same test execution component 211 are fixedly connected to the same connecting support 213. The connecting support 213 can be made of a material with good conductivity, such as copper, to reduce internal resistance and measurement error. The center-to-center distance between the two test execution components 211 is equal to the center-to-center distance between the two first tab slots 412 corresponding to the first receiving slot 411. Thus, after the first support 41 moves along the first direction to below the test execution component 211, the two test execution components 211 can align along a third direction with the positive tab 912 and negative tab 913 of the single-sided output tab cell 91 on the first support 41, and abut against the positive tab 912 and negative tab 913 in the two first tab slots 412 respectively by means of the drive component 212 to form a detection circuit.

[0054] The drive assembly 212 includes a vertical drive mechanism, which in this embodiment is a cylinder. The fixed end 2121 of the cylinder is the cylinder body, and its moving end 2122 is the cylinder rod. The moving end 2122 of the cylinder is fixedly connected to the insulating relay 214, which is further fixedly connected to the connecting support 213, so that the test execution assembly 211 is relatively fixed to the moving end 2122 of the vertical drive mechanism. The test assembly 20 includes a fixing frame 215. The lower end of the fixing frame 215 is fixedly connected to the moving part 31 of the adjustment mechanism 30. The bottom of the fixing frame 215 is fixedly disposed on the moving part 31 of the adjustment mechanism 30. Two vertical drive mechanisms are fixedly disposed on the side of the fixing frame 215 facing the transfer mechanism 11 in the second direction, and the two vertical drive mechanisms are spaced apart in the first direction, so that their corresponding test execution assemblies 211 can be aligned with the two first tab slots 412 respectively.

[0055] See also Figures 9 to 11 , Figure 9 An exemplary perspective view of a test apparatus 100 according to some embodiments of this disclosure is shown, which will Figure 2 In the embodiment, the first carrier 41 is replaced with a second carrier 42 that carries the dual-sided output electrode cell 92; Figure 10 It shows Figure 9 A magnified view of part D in the middle. Figure 11 It shows Figure 9 A magnified partial view of part D in one of its changing states, where the moving end of the vertical drive mechanism on one side is in an extended state.

[0056] like Figure 9 and Figure 10 As shown, unlike when testing a single-sided tab cell 91, when testing a double-sided tab cell 92 mounted on the second carrier 42 using the testing device, a test loop is not constructed between the two test execution components 211 of the same testing mechanism 21. When switching the testing device from a mode for testing single-sided tab cells 91 to a mode for testing double-sided tab cells 92, the connection circuit between the multiple probes of the testing mechanism 21 is switched by the testing module 22. That is, the circuit used to construct a test loop between the two test execution components 211 of the same testing mechanism 21 is changed to a circuit used to establish test loops between individual test execution components 211 of two testing mechanisms 21 opposite each other along the second direction. This makes the testing device compatible with double-sided tab cells 92.

[0057] After the model change, by adjusting the adjustment mechanism 30, the position of the test execution component 211 can be adjusted along the second direction, so that one of the two test execution components 211 of one test mechanism 21 located on one side along the second direction is aligned with the positive electrode tab 922 of the dual-sided output tab cell 92 along the third direction, while one of the two test execution components 211 of the opposite test mechanism 21 located on the other side is aligned with the negative electrode tab 923 of the same dual-sided output tab cell 92. Further, as... Figure 11 As shown, two test execution components 211, which are aligned with the positive tab 922 and negative tab 923 of the dual-sided tab cell 92, are driven to descend by their corresponding drive components 212 and contact the positive tab 922 and negative tab 923 of the dual-sided tab cell 92 to form a test circuit and test the performance parameters of the dual-sided tab cell 92.

[0058] With the above settings, the testing device 100 according to the present disclosure embodiment can be easily adjusted after the battery cell is changed, so as to be compatible with the testing of multiple battery cells, by setting an adjustable test component 20, setting two independent test execution components 211 on the test component 20, and setting an adjustment mechanism 30 for adjusting the test component 20.

[0059] See Figure 12 , Figure 12 An exemplary side view of a battery cell testing apparatus 200 according to some embodiments of the present disclosure is shown. As shown, the testing apparatus 200 includes a rack 300 and a testing device 100 according to embodiments of the present disclosure, disposed on the rack 300. The testing apparatus 200 also includes a supply assembly 80 for storing and transporting battery cells, the supply assembly 80 being fixedly disposed on the rack 300 to supply battery cells to the transfer mechanism of the battery cell testing device 100.

[0060] While numerous embodiments of this disclosure have been shown and described herein, it will be apparent to those skilled in the art that such embodiments are provided by way of example only. Many modifications, alterations, and alternatives will occur to those skilled in the art without departing from the spirit and intent of this disclosure. It should be understood that various alternatives to the embodiments of this disclosure described herein may be employed in the practice of this disclosure. The appended claims are intended to define the scope of this disclosure and therefore cover equivalents or alternatives within the scope of these claims.

Claims

1. A testing apparatus for measuring battery cell performance parameters, characterized in that, include: Transport assembly (10) having a transport plane for carrying and transporting the battery cell in a first direction; The test assembly (20) includes two test mechanisms (21), which are respectively located on both sides of the conveying plane along the second direction. Each test mechanism (21) includes two test execution components (211) and two drive components (212) respectively drivenly connected to the two test execution components (211). The drive components (212) can drive the test execution components (211) to move up and down along a third direction so that the test execution components (211) can measure the performance parameters of the battery cell. The first direction and the second direction are perpendicular to each other and parallel to the conveying plane, and the third direction is perpendicular to the conveying plane. An adjustment mechanism (30) is movably connected to at least one of the test mechanisms (21) to adjust the distance between the two test mechanisms (21) in the second direction.

2. The testing apparatus according to claim 1, characterized in that, The transport assembly (10) further includes a carrier device detachably disposed on the transport plane. The carrier device includes a first carrier member (41), which has a plurality of arrayed first receiving slots (411). Each first receiving slot (411) has two first tab slots (412) on one side along the second direction, and the two first tab slots (412) are spaced apart along the first direction; and / or, The bearing device includes a second bearing member (42), which has a plurality of arrayed second receiving grooves (421), and each of the second receiving grooves (421) has a second pole lug groove (422) on both sides along the second direction.

3. The testing apparatus according to claim 2, characterized in that, The two test execution components (211) are spaced apart along the first direction, and the center distance between the two test execution components (211) along the first direction is equal to the center distance between the two first tab grooves (412) corresponding to the first receiving groove (411); When the conveying plane carries the first carrier (41), the two test execution components (211) are respectively electrically connected to the battery electrode tabs in the first electrode slot (412); When the conveying plane carries the second carrier (42), one of the two test execution components (211) is electrically connected to the cell tab in the second tab slot (422).

4. The testing apparatus according to claim 1, characterized in that, The test component also includes a detection module (22), which includes a voltage detection interface and a resistance detection interface. The test execution component (211) includes two detection probes, which are electrically connected to the voltage detection interface and the resistance detection interface, respectively.

5. The testing apparatus according to claim 1, characterized in that, The drive component (212) includes a vertical drive mechanism, which includes a fixed end (2121) and a moving end (2122). The moving end (2122) of the vertical drive mechanism is fixedly connected to the test execution component (211).

6. The testing apparatus according to claim 1, characterized in that, The adjustment mechanism (30) includes an adjustment part (32) and a moving part (31) connected by a drive. The moving part (31) can be driven by the adjustment part (32) to move along the second direction. At least one of the test mechanisms (21) is fixedly disposed on the moving part (31) and moves with the moving part (31) to adjust the distance between the two test mechanisms (21) in the second direction.

7. The testing apparatus according to claim 6, characterized in that, The adjustment mechanism (30) includes two parts, which are spaced apart along the second direction. The conveying plane is provided with adjustment grooves (51) on both sides along the second direction. The adjustment grooves (51) extend along the second direction. The moving part (31) is connected to the testing mechanism (21) through the adjustment grooves (51).

8. The testing apparatus according to claim 7, characterized in that, The adjustment part (32) includes a lead screw assembly, the moving part (31) includes a lead screw nut that is threadedly connected to the lead screw assembly, and the testing mechanism (21) is fixedly connected to the lead screw nut.

9. The testing apparatus according to claim 2, characterized in that, The conveying plane is provided with a first limiting portion (111) extending along the first direction and a second limiting portion (112) extending along the second direction. The distance between two adjacent first limiting portions (111) matches the width of the first carrier (41) and / or the second carrier (42), and the distance between two adjacent second limiting portions (112) matches the length of the first carrier (41) and / or the second carrier (42).

10. A testing device, characterized in that, It includes a test apparatus according to any one of claims 1 to 9, and a supply component (80) for storing the battery cell and supplying the battery cell to the test apparatus.

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