Pole piece testing apparatus

Abstract

The application relates to a pole piece testing device, which comprises a feeding mechanism, a testing mechanism and a discharging mechanism arranged in sequence along the flowing direction of a pole piece to be tested. The feeding mechanism comprises a feeding module, a detection module and a first regularizing module arranged in sequence along the flowing direction of the pole piece to be tested, the detection module is used for detecting the appearance defects of the pole piece to be tested, the testing mechanism comprises a flowing module and a plurality of testing modules, and the discharging mechanism comprises a second regularizing module and a discharging module arranged in sequence along the flowing direction of the pole piece to be tested. The flowing module can move between the first regularizing module, the second regularizing module and any testing module. The pole piece testing device provided by the application can automatically test the appearance and electrical performance of the pole piece to be tested, integrates the appearance detection and the electrical performance test, improves the test efficiency of the pole piece to be tested, and reduces the test cost of the pole piece to be tested.

Description

Technical Field

[0001] This application relates to the field of battery testing technology, and in particular to an electrode testing device. Background Technology

[0002] As battery technology iterates towards higher energy density and faster charging and discharging, electrodes are developing towards ultra-thinner and higher load capacity, which places more stringent requirements on electrode performance testing.

[0003] Currently, charge-discharge testing is a crucial step in the electrode production process for evaluating its electrochemical performance. However, existing testing equipment and technologies have many limitations. Existing battery testing equipment is often limited in function, possessing only basic charge-discharge testing capabilities. Furthermore, the appearance consistency of electrodes (such as microcracks, coating defects, and thickness deviations) is equally important during production. However, appearance inspection of electrodes requires transfer to specific equipment, severely impacting testing efficiency and significantly increasing testing costs. Summary of the Invention

[0004] Therefore, it is necessary to provide an electrode testing device to address the problems of low testing efficiency and high testing costs.

[0005] An electrode testing device, comprising a feeding mechanism, a testing mechanism, and a discharging mechanism arranged sequentially along the flow direction of the electrode to be tested;

[0006] The feeding mechanism includes a feeding module, a detection module and a first sizing module arranged sequentially along the flow direction of the electrode sheet to be tested. The detection module is used to detect appearance defects of the electrode sheet to be tested. The testing mechanism includes a flow module and multiple testing modules. The unloading mechanism includes a second sizing module and an unloading module arranged sequentially along the flow direction of the electrode sheet to be tested.

[0007] The transfer module can move between the first regularization module, the second regularization module, and any of the test modules.

[0008] In one embodiment, the transfer module includes a transfer line and at least one carrier, the transfer line extending between the first straightening module, the plurality of test modules and the second straightening module, and the carrier being movably disposed on the transfer line and movable between the first straightening module, any of the test modules and the second straightening module.

[0009] In one embodiment, the carrier includes a carrier plate and a cover plate, the carrier plate having at least one bearing position for bearing the electrode to be tested, and the cover plate being rotatably disposed on the carrier plate;

[0010] The electrode testing equipment also includes an opening and closing cover assembly, which is tractably connected to the cover plate.

[0011] In one embodiment, the opening and closing cover assembly includes a flipping drive and a pressing drive. The flipping drive is tractably connected to the cover plate and is used to push the cover plate to rotate relative to the carrier plate in a first direction. The pressing drive is tractably connected to the cover plate and is used to push the cover plate to translate relative to the carrier plate in a second direction.

[0012] Wherein, the first direction is the rotation direction of the cover plate relative to the carrier plate, and the second direction is the thickness direction of the electrode sheet to be tested.

[0013] In one embodiment, the transfer module further includes at least one transfer module, the transfer module including a base and a transfer arm rotatably disposed on the base, the base being disposed on the transfer line, and the end of the transfer arm having a plurality of adsorption portions for adsorbing the electrode to be tested.

[0014] In one embodiment, both the first alignment module and the second alignment module include a support, multiple fine-tuning modules, and a platform disposed on the fine-tuning modules. The multiple fine-tuning modules are disposed on the support, and at least two of the fine-tuning modules are misaligned.

[0015] In one embodiment, the electrode testing equipment further includes a machine base and a material transfer module, wherein the feeding mechanism, the testing mechanism and the unloading mechanism are all disposed on the machine base;

[0016] The machine has a loading position, a buffer position and a unloading position, the loading mechanism is located at the loading position and the unloading mechanism is located at the unloading position;

[0017] The feeding module is used to feed the first tray carrying the electrode to be tested to the feeding position. The transfer module is used to transfer the electrode to be tested carried by the first tray to any of the test modules. The transfer module is movably set on the machine and can move between the feeding position, the buffer position and the unloading position. The transfer module is used to feed the second tray of the feeding position to the buffer position or the unloading position.

[0018] In one embodiment, the feeding module includes a feeding component, a first positioning module, and a feeding arm. The feeding component is used to feed the first material tray to the feeding position. The first positioning module positions the electrode to be tested. The feeding arm is used to feed the electrode to be tested, which is carried by the first material tray, to the transfer module.

[0019] In one embodiment, the unloading module includes an unloading component, a second positioning module, and an unloading arm. The second positioning module positions the electrode sheet to be tested after testing. The unloading arm is used to unload the electrode sheet to be tested after testing into the second material tray. The unloading component is used to unload the second material tray carrying the electrode sheet to be tested after testing.

[0020] In one embodiment, the feeding module further includes a feeding tray and a feeding arm, the feeding tray carrying the qualified electrode to be tested, and the feeding arm being movable between the feeding tray and the second feeding tray.

[0021] The aforementioned electrode testing equipment firstly involves a feeding module that feeds the electrode to be tested. The electrode then flows to a testing module, which detects surface defects such as microcracks, coating defects, and thickness deviations. Electrodes with good appearance are then fed to a first sizing module, which sizes the electrode to be tested to ensure it is in a preset position. Next, a transfer module retrieves the sized electrode from the first sizing module and feeds it to the corresponding testing module. The testing module performs performance tests on the electrode, including charge / discharge and impedance tests. Finally, after the electrode is tested, the transfer module retrieves the tested electrode from the testing module and feeds it to a second sizing module, which sizes the electrode to be tested to ensure it is in a preset position and is then unloaded and placed onto a tray by an unloading module. The electrode testing equipment provided in this application can automatically perform appearance and electrical performance testing on the electrode under test, and integrates appearance inspection and electrical performance testing to improve the testing efficiency of the electrode under test and reduce the testing cost of the electrode under test. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the electrode testing equipment provided in some embodiments.

[0023] Figure 2 This is a schematic diagram of the electrode testing equipment provided in some embodiments.

[0024] Figure 3 This is a schematic diagram of the structure of some modules in the electrode testing equipment provided in some embodiments.

[0025] Figure 4 This is a schematic diagram of the structure of some modules in the electrode testing equipment provided in some embodiments.

[0026] Figure 5 This is a structural schematic diagram of the opening / closing cover assembly and the carrier module provided in some embodiments.

[0027] Figure 6 This is a schematic diagram of the structure of the vehicle provided in some embodiments.

[0028] Figure 7 This is a schematic diagram of the opening and closing cover assembly provided in some embodiments.

[0029] Figure 8 for Figure 7 A magnified view of a portion of region A in the middle.

[0030] Figure 9 This is a schematic diagram of the material transfer module provided in some embodiments.

[0031] Figure 10 This is a schematic diagram of the structure of the first regularization module and the second regularization module provided in some embodiments.

[0032] Figure 11 This is a schematic diagram of the material transfer module provided in some embodiments.

[0033] Figure label:

[0034] 100. Electrode testing equipment;

[0035] 110. Feeding mechanism; 111. Feeding module; 1111. Feeding component; 1112. Feeding arm; 1113. First material handling section; 112. Detection module; 1121. First detection camera; 1122. Second detection camera; 113. First sizing module; 114. First OK tray; 115. First NG tray; 120. Testing mechanism; 121. Transfer module; 1211. Transfer line; 1212. Carrier; 1213. Carrier plate; 1214. Cover plate; 1215. Bearing position; 122. Testing module; 123. Transfer module; 1231. Base; 1232. Transfer arm; 1232. Adsorption section; 130. Unloading mechanism; 131. Second sizing module; 132. Unloading module; 1321 1321. Unloading component; 1322. Unloading arm; 1323. Second material handling unit; 1324. Feeding tray; 1325. Feeding arm; 133. Second OK tray; 134. Second NG tray; 140. Opening and closing cover assembly; 141. Tilting drive component; 1411. First drive source; 1412. Pull rod; 142. Pressing drive component; 1421. Second drive source; 1422. Pressure plate; 143. Carrier frame; 144. Rotating frame; 145. Accommodation space; 146. Pre-pressure roller; 1461. Spring; 150. Bracket; 151. Fine adjustment module; 152. Platform; 160. Machine base; 161. Loading position; 162. Buffer position; 163. Unloading position; 170. Transfer module; 171. Gantry frame; 172. Transfer arm. Detailed Implementation

[0036] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0037] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0038] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0039] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0040] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0041] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0042] The technical solutions provided by the embodiments of this application are described below with reference to the accompanying drawings.

[0043] See Figures 1-3 As shown, this application provides an electrode testing device 100, which includes a loading mechanism 110, a testing mechanism 120, and a unloading mechanism 130. The loading mechanism 110, the testing mechanism 120, and the unloading mechanism 130 are arranged sequentially along the flow direction of the electrode to be tested. For example, during the testing process of the electrode to be tested, the electrode to be tested flows along... Figure 2 As shown, the flow occurs in the V1 to V6 directions, with the feeding mechanism 110, testing mechanism 120, and unloading mechanism 130 moving along... Figure 2 The electrodes are arranged sequentially in directions V1 to V6 as shown. The electrode testing equipment 100 is used to test the electrode under test for appearance defects such as microcracks, coating defects, and thickness deviations, as well as for electrical performance tests such as charge / discharge and impedance.

[0044] The feeding mechanism 110 includes a feeding module 111, a detection module 112, and a first sizing module 113. The feeding module 111, detection module 112, and first sizing module 113 are arranged sequentially along the flow direction of the electrode to be tested. Figure 2The V1 to V2 directions are arranged sequentially. The detection module 112 is used to detect appearance defects of the electrode to be tested. For example, the detection module 112 includes a first detection camera 1121 and a second detection camera 1122, and the first detection camera 1121 and the second detection camera 1122 are arranged opposite to each other. When the electrode to be tested is transferred to the position of the detection module 112, the first detection camera 1121 and the second detection camera 1122 are respectively located on opposite sides of the electrode to be tested. The first detection camera 1121 and the second detection camera 1122 are used to detect appearance defects such as microcracks, coating defects, and thickness deviations on opposite sides of the electrode to be tested.

[0045] The testing mechanism 120 includes a transfer module 121 and multiple testing modules 122. The multiple testing modules 122 are arranged sequentially along the extension direction of the transfer module 121. Through the multiple testing modules 122, batch electrical tests on the electrode sheets under test can be performed, improving the testing efficiency of the electrode sheets under test. The unloading mechanism 130 includes a second aligning module 131 and an unloading module 132. The second aligning module 131 and the unloading module 132 are arranged sequentially along the transfer direction of the electrode sheets under test. Figure 2 The V5 to V6 directions are set sequentially. Thus, during the unloading process of the electrode to be tested, the second sizing module 131 sizes the tested electrode, so that the tested electrode is unloaded and placed on a tray by the unloading module 132 according to a preset posture.

[0046] The transfer module 121 can move between the first alignment module 113, the second alignment module 131, and any of the test modules 122. For example, when the electrode to be tested needs to be inspected, the transfer module 121 moves to the first alignment module 113 to pick up the electrode to be tested. The transfer module 121 moves from the first alignment module 113 toward the test module 122 and feeds the picked-up electrode to be tested to the idle test module 122, whereby the test module 122 performs the test on the electrode. For example, when the electrode to be tested needs to be unloaded, the transfer module 121 moves to the test module 122 which carries the electrode to be tested after testing. The test module 122 takes the electrode to be tested after testing, and the transfer module 121 moves from the test module 122 toward the second straightening module 131 and feeds the electrode to be tested after testing to the second straightening module 131. The second straightening module 131 then straightens the electrode to be tested after testing.

[0047] The aforementioned electrode testing equipment 100 firstly involves the feeding module 111 feeding the electrode to be tested. The electrode is then transferred to the detection module 112, which detects surface defects such as microcracks, coating defects, and thickness deviations. Electrodes with good appearance are transferred to the first sizing module 113, which sizes the electrode to be tested to ensure it is fed according to a preset orientation. Then, the transfer module 121 retrieves the sized electrode from the first sizing module 113 and... The electrode under test is fed to the corresponding test module 122, which performs performance tests such as charge / discharge and impedance tests. Finally, after the electrode under test is tested, the transfer module 121 retrieves the tested electrode from the test module 122 and feeds it to the second alignment module 131. The second alignment module 131 aligns the tested electrode to its preset position, allowing it to be unloaded and trayed by the unloading module 132. This allows for automated appearance and performance testing of the electrode under test, integrating appearance inspection with electrical performance testing, improving testing efficiency and reducing testing costs.

[0048] In one embodiment, see Figures 1-4 As shown, the transfer module 121 includes a transfer line 1211 and at least one carrier 1212. The transfer line 1211 extends between a first sizing module 113, multiple test modules 122, and a second sizing module 131, and may be a belt structure, chain structure, roller structure, etc. The carrier 1212 is movably disposed on the transfer line 1211, and the carrier 1212 can move between the first sizing module 113, any of the test modules 122, and the second sizing module 131. Specifically, after the electrode under test is shaped by the first sizing module 113, the carrier 1212 moves to the position corresponding to the first sizing module 113. The electrode under test shaped by the first sizing module 113 is loaded onto the carrier 1212. The carrier 1212 carries the electrode under test and moves to the idle test module 122. The electrode under test is tested by the test module 122. After the test is completed, the electrode under test moves to the second sizing module 131 by the carrier 1212, so that the electrode under test can be shaped by the second sizing module 131 and then unloaded onto the tray.

[0049] Since the thickness of the electrode under test is typically only tens to hundreds of micrometers, the material handling structure is prone to causing overlap, pressure damage, and other adverse effects during the transfer process, leading to damage to the electrode under test. By using the first straightening module 113 and the second straightening module 131 to straighten the electrode under test, the position and orientation of the electrode can be corrected, facilitating the material handling and unloading operations, and preventing damage to the electrode under test during the transfer process.

[0050] In one embodiment, see Figures 1-6As shown, the carrier 1212 includes a carrier plate 1213 and a cover plate 1214. The carrier plate 1213 has at least one bearing position 1215, which is used to bear the electrode under test. For example, the bearing position 1215 is a cavity structure or a boss structure provided on the carrier plate 1213. Preferably, there are multiple bearing positions 1215 to bear multiple electrodes under test for simultaneous testing, thereby improving the testing efficiency of the electrodes under test. Since both the cover plate 1214 and the carrier plate 1213 have electrical structures that conduct the electrodes under test, the cover plate 1214 is rotatably disposed on the carrier plate 1213. For example, when it is necessary to perform electrical performance testing on the electrodes under test, the cover plate 1214 is rotated to the position of covering the carrier plate 1213, and the electrodes under test are electrically connected to the carrier 1212 for electrical testing. For example, during the loading and unloading of the electrode to be tested, the cover plate 1214 rotates to a position separated from the carrier plate 1213, making it convenient to pick up and place the electrode to be tested on the carrier 1212.

[0051] The electrode testing equipment 100 also includes an opening and closing cover assembly 140, which is tractably connected to a cover plate 1214. Thus, by connecting the opening and closing cover assembly 140 to the cover plate 1214, the cover plate 1214 is driven to rotate relative to the carrier plate 1213. During rotation, the cover plate 1214 can close relative to the carrier plate 1213 to conduct electricity to the electrode under test, or open relative to the carrier plate 1213 to facilitate the placement and removal of the electrode under test. For example, on the side of the transfer line 1211 near the first straightening module 113, the opening and closing cover assembly 140 performs the operation of closing the cover plate 1214 relative to the carrier plate 1213 to conduct the carrier 1212 and the electrode to be tested; or on the side of the transfer line 1211 near the second straightening module 131, the opening and closing cover assembly 140 performs the operation of opening the cover plate 1214 relative to the carrier plate 1213 to facilitate the picking and placing of the electrode to be tested.

[0052] Specifically, see Figures 2-6 As shown, the cover opening / closing assembly 140 includes a flipping drive 141 and a pressing drive 142. The flipping drive 141 is tractably connected to the cover plate 1214 and is used to push the cover plate 1214 to rotate relative to the carrier plate 1213 in a first direction. For example, the flipping drive 141 may include a first drive source 1411 and a pull rod 1412, the pull rod 1412 being connected to the output end of the first drive source 1411, and the pull rod 1412 may be connected to the cover plate 1214 by screwing, snapping, or other means. The pressing drive 142 is tractably connected to the cover plate 1214 and is used to push the cover plate 1214 to translate in a second direction. Alternatively, the pressing drive 142 may include a second drive source 1421 and a pressure plate 1422, the pressure plate 1422 being connected to the output end of the second drive source 1421, and the pressure plate 1422 may abut against the cover plate 1214. Wherein, the first direction is the rotation direction of the cover plate 1214 relative to the carrier plate 1213, such as the first direction being... Figure 6 The M1 direction is shown. The second direction is the thickness direction of the electrode under test. For example, when the electrode under test is placed on the support position 1215, the electrode under test is placed on the support position 1215 in a state perpendicular to its thickness direction, and the second direction is... Figure 6 The direction M2 is shown. Translation of the cover plate 1214 along the second direction means that the cover plate 1214 moves in a straight line or approximately a straight line along the second direction. The first drive source 1411 and the second drive source 1421 may include, but are not limited to, drive cylinders, drive motors, etc.

[0053] For example, as in this embodiment, when testing the electrode under test, firstly, the electrode under test is supported on the support position 1215 of the carrier plate 1213; then, the first drive source 1411 outputs power to the pull rod 1412, which drives the cover plate 1214 to rotate relative to the carrier plate 1213, and the cover plate 1214 rotates along the... Figure 6 When the cover plate 1213 is rotated in the direction M1, the cover plate 1214 is not directly pressed against the electrode under test, that is, no pressing force is generated between the cover plate 1214 and the electrode under test. Then, the second drive source 1421 outputs power to the pressure plate 1422. The pressure plate 1422 moves towards the cover plate 1214 along the second direction and abuts against the cover plate 1214. The pressure plate 1422 pushes the cover plate 1214 to translate along the direction M2. The cover plate 1214 translates towards the thickness direction of the electrode under test and abuts against the electrode under test. The cover plate 1214 and the electrode under test are electrically connected, so as to electrically connect the electrode under test and the carrier 1212.

[0054] Because the electrode under test is extremely thin, it is prone to damage due to non-planar contact during electrical crimping. The aforementioned electrode testing device 100 first uses a flipping drive 141 to rotate the cover plate 1214 into position, and then uses a pressing drive 142 to move the cover plate 1214 laterally towards the thickness direction of the electrode under test, thus pressing the cover plate 1214 vertically downwards and connecting it to the electrode under test. In this way, by first rotating and then pressing, the carrier 1212 and the electrode under test are connected, applying a uniform crimping force to the electrode under test and preventing damage caused by non-planar contact.

[0055] During the contact process between the pressure plate 1422 and the cover plate 1214, the pressure plate 1422 and the cover plate 1214 are in surface contact. Compared with the point contact contact method, the surface contact method between the pressure plate 1422 and the cover plate 1214 can disperse the contact force and avoid the adverse phenomenon of stress concentration during the contact process between the pressure plate 1422 and the cover plate 1214.

[0056] Further reading Figure 7 and Figure 8As shown, the opening and closing cover assembly 140 also includes a carrier 143 and a rotating frame 144, with the rotating frame 144 rotatably mounted on the carrier 143. A receiving space 145 is formed between the carrier 143 and the rotating frame 144, which is used to receive the carrier 1212. For example, when an electrical test is required on the electrode under test, the carrier 1212 carrying the electrode under test is placed within the receiving space 145. Furthermore, by rotating the rotating frame 144 relative to the carrier 143, the size of the receiving space 145 can be reduced or increased, thereby fixing the carrier 1212 or facilitating the placement and removal of the carrier 1212.

[0057] Both the tilting drive 141 and the pressing drive 142 are mounted on the rotating frame 144, and are fixed to the rotating frame 144 by means of screwing, welding, etc. The tilting drive 141 is connected to the rotating frame 144 in a transmission manner, and is used to push the rotating frame 144 along a first direction ( Figure 6 The rotating frame 144 rotates in the first direction (M1 direction shown), and during the rotation of the rotating frame 144 in the first direction, the rotating frame 144 can abut against the cover plate 1214. For example, the carrier 1212 carrying the electrode to be tested is placed in the accommodating space 145. The flipping drive 141 pushes the rotating frame 144 to rotate in the first direction. During the rotation of the rotating frame 144 in the first direction, the rotating frame 144 can abut against the cover plate 1214. The rotating frame 144 pushes the cover plate 1214 to rotate relative to the carrier plate 1213 in the first direction, so that the cover plate 1214 covers the carrier plate 1213 to perform electrical testing on the electrode to be tested.

[0058] Further, see Figures 5-8 As shown, the opening and closing cover assembly 140 also includes at least one pre-pressure roller 146, which is elastically connected to the rotating frame 144. Exemplarily, the pre-pressure roller 146 may be connected to the rotating frame via a spring 1461, or it may be elastically connected to the rotating frame 144 via an elastic sheet, silicone element, etc. When the cover plate 1214 rotates along the first direction to cover the carrier plate 1213, the pre-pressure roller 146 abuts against the cover plate 1214; that is, when the cover plate 1214 closes onto the carrier plate 1213, the pre-pressure roller 146 abuts against the cover plate 1214. Thus, the pre-pressure roller 146 limits the position of the cover plate 1214 to ensure that the cover plate 1214 moves along the second direction (…). Figure 6 The vertical downward pressure (as shown in the M2 direction) improves the positional accuracy, thereby enhancing the testing accuracy of the electrode under test.

[0059] In this embodiment, the pre-pressure roller 146 is flexible, such as being made of flexible materials like plastic or silicone, to avoid damage or scratches to the cover plate 1214 caused by the pre-pressure roller 146.

[0060] In one embodiment, see Figure 2, Figure 3 and Figure 9 As shown, the transfer module 121 also includes at least one transfer module 123, which includes a base 1231 and a transfer arm 1232. The base 1231 is disposed on the transfer line 1211, such as by screwing, welding, or other means. The transfer arm 1232 is rotatably disposed on the base 1231. For example, the transfer arm 1232 is a five-axis, six-axis, or other multi-axis robotic arm, and the end of the transfer arm 1232 has multiple adsorption parts 1233 for adsorbing the electrode to be tested. For example, the adsorption parts 1233 can adsorb the carrier 1212. Since the carrier 1212 carries the electrode to be tested, the loading operation of the electrode to be tested can be completed by adsorbing the carrier 1212; or, the adsorption parts 1233 can directly adsorb the electrode to be tested to complete the loading operation. For example, in this embodiment, the end of the transfer arm 1232 has two adsorption parts 1233. When the electrode to be tested needs to be tested, one of the adsorption parts 1233 of the transfer arm 1232 adsorbs the electrode to be tested, and the other adsorption part 1233 of the transfer arm 1232 moves to the test module 122 and picks up the electrode to be tested after testing. The electrode to be tested after testing is placed on the transfer line 1211 for transfer and unloading. The transfer arm 1232 rotates to the test module 122 corresponding to the adsorption part 1233 that adsorbs the electrode to be tested, so as to feed the electrode to be tested to the idle test module 122 for electrical testing.

[0061] It should be noted that, in this embodiment, to improve the testing efficiency of the electrode under test, multiple test modules 122 and multiple transfer modules 123 are configured, with multiple transfer modules 123 corresponding to multiple test modules 122. For example, a transfer module 123 may be positioned near a test module 122, or two test modules 122 may be grouped together, with a transfer module 123 positioned near the group of test modules 122. Thus, setting multiple test modules 122 improves the testing efficiency of the electrode under test, and the multiple transfer modules 123 corresponding to multiple test modules 122 shorten the transfer path between the transfer modules 123 and the test modules 122, thereby reducing the transfer time of the transfer modules 123 and further improving the testing efficiency of the electrode under test. Furthermore, the adsorption unit 1233 is floatingly connected to the transfer arm 1232. If at least one elastic element is provided between the adsorption unit 1233 and the transfer arm 1232, on the one hand, the adsorption unit 1233 picks up the electrode to be tested by negative pressure adsorption, which will not cause adverse effects such as overlap or pressure damage with the electrode to be tested. On the other hand, during the process of picking up the electrode to be tested, the adsorption unit 1233 and the electrode to be tested are in flexible contact, which can not only buffer the contact force between the electrode to be tested and the adsorption unit 1233, but also avoid damage to the electrode to be tested due to excessive pressure, collision or other factors.

[0062] The aforementioned electrode testing equipment 100 has multiple adsorption sections 1233 at the end of the transfer arm 1232 that alternately pick up the electrode to be tested after testing and release the electrode to be tested, saving the testing time of the electrode to be tested and meeting the continuous testing rhythm requirements of the electrode to be tested.

[0063] Further, see Figure 2 , Figure 3 and Figure 9 As shown, the conveyor line 1211 is equipped with a first scanning module. The first scanning module can obtain information such as the material arrival and position of the carrier 1212 on the conveyor line 1211, which facilitates precise control of the material handling arm 1232 for picking up and feeding materials.

[0064] In one embodiment, see Figure 2 , Figure 3 , Figure 4 and Figure 10 As shown, both the first alignment module 113 and the second alignment module 131 include a support 150, multiple fine-tuning modules 151, and a platform 152 disposed on the fine-tuning modules 151. The multiple fine-tuning modules 151 are all disposed on the support 150, and at least two fine-tuning modules 151 are misaligned. For example, see [reference needed]. Figure 10 As shown, there are multiple fine-tuning modules 151, and at least two fine-tuning modules 151 are staggered in the XYZ space. If there are eight fine-tuning modules 151, they are grouped into sets of four, with the two sets of fine-tuning modules 151 staggered in the X and Z directions. Since the fine-tuning modules 151 occupy a certain amount of space, and the size of the electrode under test is relatively small, staggering at least two fine-tuning modules 151 allows for a reasonable arrangement of the positions of multiple fine-tuning modules 151, so that the first alignment module 113 and the second alignment module 131 can be arranged in a smaller space.

[0065] In order to ensure that the electrode under test is on the same plane during the process of aligning the electrode under test with multiple stages 152, some stages 152 can be connected to the fine-tuning module 151 through extension rods, which saves space while ensuring positioning accuracy.

[0066] Specifically, in this embodiment, the fine-tuning module 151 is an XYZ fine-tuning platform. The fine-tuning module 151 fine-tunes the stage 152 in the XYZ space to regulate the spacing between two adjacent electrode sheets to be tested, so as to ensure the material picking position and material placement accuracy of the electrode sheets to be tested.

[0067] In one embodiment, see Figures 1-4As shown, the electrode testing equipment 100 also includes a machine base 160 and a material transfer module 170. The loading mechanism 110, testing mechanism 120, and unloading mechanism 130 are all located on the machine base 160. The machine base 160 has a loading position 161, a buffer position 162, and an unloading position 163. The loading mechanism 110 is located at the loading position 161, and the unloading mechanism 130 is located at the unloading position 163. The loading module 111 is used to feed the first tray carrying the electrode to be tested to the loading position 161. The transfer module 121 is used to transfer the electrode to be tested carried by the first tray to any testing module 122. The transfer module 170 is movably set on the machine base 160, and the transfer module 170 can move between the loading position 161, the buffer position 162, and the unloading position 163. The transfer module 170 is used to send the second tray of the loading position 161 to the buffer position 162 or the unloading position 163. It should be noted that when the electrode to be tested carried in the first tray is removed, the tray without electrode to be tested is converted into the second tray. That is to say, the tray carrying the electrode to be tested is the first tray, and the tray without electrode to be tested is the second tray.

[0068] Specifically, when testing the electrode under test, the first tray carries the electrode to be tested, and the loading module 111 feeds the first tray to the loading position 161; the transfer module 121 takes the electrode under test from the first tray and transfers it to the idle testing module 122, where the testing module 122 performs electrical tests on the electrode under test. After all the electrode under test are taken from the first tray and the tray is converted to a second tray, the transfer module 170 moves to the loading position 161, takes the second tray, and feeds it to the buffer position 162 or the unloading position 163. The second tray can then be used for unloading the electrode under test at the unloading position 163. Furthermore, when the number of the second material trays exceeds the material requirements of the electrode under test, the transfer module 170 sends the second material trays to the buffer position 162 for temporary storage. When the second material tray is required to be unloaded at the unloading position 163, the transfer module 170 can call the second material tray from the loading position 161 or the buffer position 162 to the unloading position 163 to solve the problem of asynchronous loading and unloading and ensure the continuity of the testing process of the electrode under test.

[0069] For example, see Figure 11 As shown, the transfer module 170 includes a gantry frame 171 and a transfer arm 172. The transfer arm 172 is disposed on the gantry frame 171 and can move between the loading position 161, the buffer position 162 and the unloading position 163. The transfer arm 172 picks up the second material tray of the loading position 161 by negative pressure adsorption and can feed the second material tray to the buffer position 162 or the unloading position 163 to ensure the continuity of the testing process of the electrode under test.

[0070] In one embodiment, see Figures 1-4As shown, the feeding module 111 includes a feeding component 1111, a first positioning module, and a feeding arm 1112. The feeding component 1111 is used to feed the first material tray to the feeding position 161. If the feeding component 1111 is a lifting structure, it feeds the first material tray carrying the electrode sheet to be tested to the feeding position 161 by lifting. The first positioning module positions the electrode sheet to be tested. If the first positioning module includes at least one positioning camera, it positions the electrode sheet to be tested in the first material tray by taking pictures to ensure the accuracy of the subsequent picking position of the electrode sheet to be tested. The loading arm 1112 is used to load the electrode sheet to be tested from the first material tray to the transfer module 121. If the loading arm 1112 has a floating first picking part 1113, the first picking part 1113 can pick up the electrode sheet to be tested from the first material tray by negative pressure adsorption, and then send the picked-up electrode sheet to the carrier 1212 and then transfer it to the transfer module 121 for electrical testing.

[0071] In this embodiment, the feeding mechanism 110 includes a second barcode scanning module, which can acquire the feeding information of the electrode to be tested. The feeding position 161 is equipped with a first OK tray 114 and a first NG tray 115. When the first tray carrying the electrode to be tested is fed to the feeding position 161, the detection module 112 detects appearance defects such as microcracks, coating defects, and thickness deviations of the electrode to be tested. If the appearance of the electrode to be tested is good, the electrode to be tested with good appearance is sorted to the first OK tray 114. The electrode to be tested in the first OK tray 114 can continue to be fed to the testing module 122 through the transfer module 121 for electrical testing; conversely, if the electrode to be tested has appearance defects, the electrode to be tested with appearance defects is sorted to the first NG tray 115 for receiving operation. Thus, the detection module 112 detects the appearance defects of the electrode under test, and the electrode under test after the appearance defect detection is distributed to the first OK tray 114 and the first NG tray 115. Electrical tests are then performed on the electrode under test with good appearance on the first OK tray 114, so as to avoid affecting the testing efficiency of the electrode under test by performing electrical tests on the electrode under test with appearance defects.

[0072] In one embodiment, see Figures 1-4As shown, the unloading module 132 includes an unloading component 1321, a second positioning module, and an unloading arm 1322. The second positioning module positions the tested electrode sheet. For example, the second positioning module includes at least one positioning camera. The second positioning module positions the tested electrode sheet by taking pictures, and works with the second straightening module 131 to straighten the tested electrode sheet to ensure the accuracy of the electrode sheet picking position, facilitating the unloading arm 1322 to unload and arrange the tested electrode sheet on a tray. The unloading arm 1322 is used to unload the tested electrode sheet into the second tray. For example, the unloading arm 1322 has a floating second picking part 1323. The second picking part 1323 can pick up the tested electrode sheet from the transfer module 121 by negative pressure adsorption and unload the picked-up tested electrode sheet into the second tray for unloading and traying. The unloading component 1321 is used to unload the second tray containing the tested electrode sheet. If the unloading component 1321 is a lifting structure, the unloading component 1321 unloads the tested electrode sheet by lifting.

[0073] The unloading mechanism 130 includes a third scanning module, which can acquire the unloading information of the electrode sheet to be tested after testing. In this embodiment, the unloading position 163 is equipped with a second OK tray 133 and a second NG tray 134. The second OK tray 133 is used to collect electrode sheets with good electrical performance, and the second NG tray 134 is used to collect electrode sheets with electrical performance defects. In this way, the electrode sheets to be tested are classified and collected by the second OK tray 133 and the second NG tray 134, which facilitates the continued flow of the electrode sheets to be tested to other processes for operation according to the test results.

[0074] Because some of the electrode sheets to be tested are rejected due to testing defects during the testing process, the number of electrode sheets to be tested in the second OK tray 133 is insufficient. If the sheets are collected directly, empty spaces will appear in the second OK tray 133. Based on this, in one embodiment, see... Figures 1-4 As shown, the unloading module 132 also includes a replenishing tray 1324 and a replenishing arm 1325. The replenishing tray 1324 carries qualified electrode sheets to be tested, and the replenishing arm 1325 can move between the replenishing tray 1324 and the second tray. For example, the replenishing arm 1325 can be a five-axis, six-axis, or other multi-axis robotic arm. Thus, when a gap appears due to NG (non-conforming) material being thrown out during the material collection process of the second tray, the replenishing arm 1325 moves to the replenishing tray 1324 to pick up a qualified electrode sheet to be tested and feeds the qualified electrode sheet to be tested to the second tray to fill the gap, ensuring that the second tray is finally full, which facilitates subsequent storage, statistics, and circulation of the electrode sheets to be tested.

[0075] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0076] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. An electrode testing device, characterized in that, The electrode testing equipment includes a feeding mechanism, a testing mechanism, and a discharging mechanism arranged sequentially along the flow direction of the electrode to be tested. The feeding mechanism includes a feeding module, a detection module and a first sizing module arranged sequentially along the flow direction of the electrode sheet to be tested. The detection module is used to detect appearance defects of the electrode sheet to be tested. The testing mechanism includes a flow module and multiple testing modules. The unloading mechanism includes a second sizing module and an unloading module arranged sequentially along the flow direction of the electrode sheet to be tested. The transfer module can move between the first regularization module, the second regularization module, and any of the test modules.

2. The electrode testing equipment according to claim 1, characterized in that, The transfer module includes a transfer line and at least one carrier. The transfer line extends between the first straightening module, the plurality of test modules, and the second straightening module. The carrier is movably disposed on the transfer line and can move between the first straightening module, any of the test modules, and the second straightening module.

3. The electrode testing equipment according to claim 2, characterized in that, The carrier includes a carrier plate and a cover plate. The carrier plate has at least one bearing position for bearing the electrode to be tested, and the cover plate is rotatably disposed on the carrier plate. The electrode testing equipment also includes an opening and closing cover assembly, which is tractably connected to the cover plate.

4. The electrode testing equipment according to claim 3, characterized in that, The opening and closing cover assembly includes a flipping drive and a pressing drive. The flipping drive is tractably connected to the cover plate and is used to push the cover plate to rotate relative to the carrier plate in a first direction. The pressing drive is tractably connected to the cover plate and is used to push the cover plate to translate relative to the carrier plate in a second direction. Wherein, the first direction is the rotation direction of the cover plate relative to the carrier plate, and the second direction is the thickness direction of the electrode sheet to be tested.

5. The electrode testing equipment according to claim 2, characterized in that, The transfer module further includes at least one transfer module, which includes a base and a transfer arm rotatably disposed on the base. The base is disposed on the transfer line, and the end of the transfer arm has multiple adsorption portions for adsorbing the electrode sheet to be tested.

6. The electrode testing equipment according to claim 1, characterized in that, Both the first and second regularization modules include a support, multiple fine-tuning modules, and a platform disposed on the fine-tuning modules. The multiple fine-tuning modules are disposed on the support, and at least two of the fine-tuning modules are misaligned.

7. The electrode testing equipment according to claim 1, characterized in that, The electrode testing equipment also includes a machine base and a material transfer module, wherein the feeding mechanism, the testing mechanism and the unloading mechanism are all located on the machine base; The machine has a loading position, a buffer position and a unloading position, the loading mechanism is located at the loading position and the unloading mechanism is located at the unloading position; The feeding module is used to feed the first tray carrying the electrode to be tested to the feeding position. The transfer module is used to transfer the electrode to be tested carried by the first tray to any of the test modules. The transfer module is movably set on the machine and can move between the feeding position, the buffer position and the unloading position. The transfer module is used to feed the second tray of the feeding position to the buffer position or the unloading position.

8. The electrode testing equipment according to claim 7, characterized in that, The feeding module includes a feeding component, a first positioning module, and a feeding arm. The feeding component is used to feed the first material tray to the feeding position. The first positioning module positions the electrode to be tested. The feeding arm is used to feed the electrode to be tested, which is carried by the first material tray, to the transfer module.

9. The electrode testing equipment according to claim 7, characterized in that, The unloading module includes an unloading component, a second positioning module, and an unloading arm. The second positioning module positions the electrode sheet to be tested after testing. The unloading arm is used to unload the electrode sheet to be tested after testing into the second material tray. The unloading component is used to unload the second material tray carrying the electrode sheet to be tested after testing.

10. The electrode testing equipment according to claim 9, characterized in that, The feeding module also includes a feeding tray and a feeding arm. The feeding tray carries the qualified electrode sheet to be tested, and the feeding arm can move between the feeding tray and the second feeding tray.

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