Pole piece detection equipment

Abstract

The pole piece detection equipment comprises a laser cutting device, a first detection device, a second detection device, a first transfer device and a second transfer device, wherein the laser cutting device is used for cutting a battery pole piece to form a pole piece sample, the first transfer device is used for receiving the pole piece sample, the first detection device is used for detecting appearance information of the pole piece sample in the first transfer device, and the second transfer device is used for transferring the pole piece sample from the first transfer device to the second detection device; the second detection device is used for detecting information such as weight and water content of the pole piece sample. According to the detection equipment, pole piece samples with the same shape and size can be automatically cut from different areas or parts of the battery pole piece, the pole piece samples are screened by detecting the appearances of the pole piece samples, and the consistency of the pole piece samples used in the detection procedures of weight, water content and the like can be ensured; manual intervention can be reduced, the detection efficiency is improved, and the accuracy of detection results such as the weight and the water content of the pole piece can be effectively improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of lithium battery detection, in particular to a pole piece detection equipment. BACKGROUND

[0002] The water content and weight of the battery pole piece are closely related to the performance of the lithium battery. For example, when the water content of the pole piece is too large, a side reaction with the electrolyte may occur, leading to swelling, low capacity, high internal resistance, and even direct scrap of the lithium battery. Therefore, during the production process of the lithium battery, the battery pole piece needs to be sampled and detected. At present, the sampling and detection of the pole piece is usually performed by randomly cutting the battery pole piece by hand to obtain a pole piece sample, and then placing the pole piece sample in a detection instrument such as a moisture meter for detection. This method is not only time-consuming and labor-intensive, but also has low detection efficiency and is easily affected by human factors, which affects the accuracy of the detection results. CONTENT OF THE UTILITY MODEL

[0003] The technical problem solved by the present application is to provide a pole piece detection equipment that can effectively improve the detection efficiency and ensure the accuracy of the detection results.

[0004] In one example, a pole piece detection equipment is provided, which has a plurality of functional areas, and the plurality of functional areas include a cutting area, a first detection area, and a second detection area. The pole piece detection equipment comprises:

[0005] A pole piece loading device is configured to deliver a battery pole piece to the cutting area.

[0006] A laser cutting device is disposed in the cutting area, and the laser cutting device is configured to cut the battery pole piece to form a pole piece sample.

[0007] A first transfer device is controllably movable between the cutting area and the first detection area, and the first transfer device is configured to transfer the pole piece sample received from the cutting area to the first detection area.

[0008] A first detection device is disposed in the first detection area, and the first detection device is configured to detect appearance information of the pole piece sample.

[0009] A second transfer device and a second detection device are provided. The second transfer device is controllably movable between the first detection area and the second detection area, and the second detection device is disposed in the second detection area. The second transfer device is configured to transfer the pole piece sample picked up from the first transfer device to the second detection device, and the second detection device is configured to detect weight information and / or water content information of the pole piece sample.

[0010] In one embodiment, the first transfer device includes a first drive member and a carrier tray; the power end of the first drive member is coupled to the carrier tray for driving the carrier tray to move between the cutting area and the first detection area; the laser cutting device includes a laser cutting mechanism, and / or the first detection device includes a detection camera; wherein:

[0011] The laser cutting mechanism is located above the electrode feeding device and is used to cut the battery electrode; when the carrying tray moves to the cutting area, it is located below the electrode feeding device to receive the electrode sample falling from the electrode feeding device.

[0012] When the support tray moves to the first detection area, it is located below the detection camera; the detection camera is used to capture images of the electrode sample in the support tray to obtain the appearance information of the electrode sample.

[0013] In one embodiment, the carrier tray has multiple adsorption structures arranged sequentially along the movement direction of the carrier tray; the adsorption structures are used to adsorb and fix a corresponding electrode sample onto the carrier tray.

[0014] In one embodiment, the laser cutting mechanism includes a laser and a galvanometer-field mirror assembly. The laser is used to emit a laser beam, and the galvanometer-field mirror assembly is disposed in the laser emission path of the laser to adjust the propagation path of the laser beam.

[0015] In one embodiment, the second transfer device includes a second drive member and a pickup assembly; the power end of the second drive member is coupled to the pickup assembly for driving the pickup assembly to move between the first detection area and the second detection area; wherein, when the pickup assembly moves to the first detection area, it is positioned above the first transfer device to pick up the electrode sample in the first transfer device; when the pickup assembly moves to the second detection area, it is positioned above the second detection device to release the electrode sample into the second detection device.

[0016] In one embodiment, the pickup assembly includes an adsorption element, a third driving element, and a fourth driving element; wherein the adsorption element is used to adsorb and release the electrode sample; the power end of the third driving element is coupled to the adsorption element and is used to drive the adsorption element to rotate around a preset axis.

[0017] The fourth driving member is connected between the body of the third driving member and the power end of the second driving member; the fourth driving member is used to drive the third driving member to move the adsorption member up and down relative to the first transfer device or the second detection device along the direction of the preset axis.

[0018] In one embodiment, the second detection device includes a gravimeter and a moisture meter, the gravimeter and the moisture meter being arranged side by side along the movement direction of the pickup component, the gravimeter being used to detect the weight information of the electrode sample, and the moisture meter being used to detect the water content information of the electrode sample; wherein, the number of the moisture meters is set to one or more.

[0019] In one embodiment, the electrode feeding device includes a conveyor belt mechanism and a pressing mechanism; wherein:

[0020] The conveyor belt mechanism is used to carry and transport the battery electrode sheets, and the conveyor belt mechanism has a material inlet structure; the material inlet structure is located in the cutting area and is used to provide a path for the first transfer device to receive the electrode sheet sample;

[0021] The pressing mechanism is vertically and flexibly positioned above the conveyor belt mechanism, and is arranged on both sides of the feed inlet structure along the conveying direction of the conveyor belt mechanism; the pressing mechanism is used to press the battery electrode sheet against the conveyor belt mechanism when the conveyor belt mechanism stops conveying.

[0022] In one embodiment, the electrode feeding device further includes a limiting mechanism and / or a detection mechanism; wherein:

[0023] The limiting mechanism can be controllably moved relative to the conveyor belt mechanism to limit the position of the battery electrode on the conveyor belt mechanism; the moving direction of the limiting mechanism is perpendicular to the conveying direction of the conveyor belt mechanism.

[0024] The detection mechanism is fixedly installed above the conveyor belt mechanism and is used to detect the size information of the battery electrode.

[0025] In one embodiment, the electrode inspection device further includes a control system, wherein the first transfer device, the second transfer device, the first inspection device, the second inspection device, the laser cutting device, and the electrode feeding device are electrically connected to the control system;

[0026] And / or the electrode testing equipment further includes a base frame device, wherein the electrode feeding device, the laser cutting device, the first transfer device and the second transfer device are all disposed on the base frame device, and the second testing device is disposed independently and separately from the base frame device;

[0027] And / or the electrode testing device further includes a recycling device, and the plurality of functional areas further include a recycling area, the recycling device being disposed in the recycling area; wherein the second transfer device is controllably movable between the first testing area, the second testing area and the recycling area, so as to transfer the electrode sample picked up from the first transfer device or the first testing device to the recycling device.

[0028] The electrode testing equipment according to the above embodiments includes an electrode feeding device, a laser cutting device, a first testing device, a second testing device, a first transfer device, and a second transfer device. The laser cutting device is used to cut battery electrodes to form electrode samples. The first transfer device is used to receive the electrode samples. The first testing device is used to detect the appearance information of the electrode samples in the first transfer device. The second transfer device is used to transfer the electrode samples from the first transfer device to the second testing device. The second testing device is used to detect information such as the weight and moisture content of the electrode samples. This testing equipment can automatically cut electrode samples of the same shape and size from different areas or parts of the battery electrodes. By detecting the appearance of the electrode samples, it can screen the electrode samples, ensuring the consistency of the electrode samples used in the weight, moisture content, and other testing processes. This not only reduces manual intervention and improves testing efficiency but also effectively improves the accuracy of the electrode weight, moisture content, and other test results. Attached Figure Description

[0029] Figure 1 This is a three-dimensional structural schematic diagram of an electrode testing device according to one embodiment.

[0030] Figure 2 This is a system architecture diagram of an electrode testing device according to one embodiment.

[0031] Figure 3 This is a schematic diagram of the spatial layout of functional areas in an electrode testing device according to one embodiment.

[0032] Figure 4 This is a schematic diagram of the relevant structures in the cutting area of ​​an electrode inspection device according to one embodiment.

[0033] Figure 5 This is a schematic diagram of the electrode feeding device in an electrode testing equipment according to one embodiment.

[0034] Figure 6 This is a schematic diagram of the structure of a laser cutting device in an electrode inspection apparatus according to one embodiment.

[0035] Figure 7 This is a schematic diagram of the structure of the first transfer device in an electrode testing device according to one embodiment.

[0036] Figure 8This is a schematic diagram of the structure of the second transfer device in an electrode testing device according to one embodiment.

[0037] Figure 9 This is a partial structural schematic diagram of the second transfer device in an electrode testing device according to one embodiment.

[0038] Figure 10 This is a schematic diagram of the structure of the first detection device in an electrode detection apparatus according to one embodiment.

[0039] Figure 11 This is a schematic diagram of the structure of the second detection device in an electrode detection apparatus according to one embodiment.

[0040] In the picture:

[0041] 100. Electrode feeding device; 110. Conveyor belt mechanism; 110a. Feed port structure; 120. Pressing mechanism; 121. Pressing roller; 122. Pressing drive; 130. Limiting mechanism; 131. Limiting baffle; 132. Limiting drive; 140. Detection mechanism; 200. Laser cutting device; 210. Laser cutting mechanism; 211. Laser; 212. Galvanometer field lens assembly; 220. Cutting support mechanism;

[0042] 300, First transfer device; 310, First driving component; 320, Supporting tray; 321, Adsorption structure; 400, Second transfer device; 410, Second driving component; 420, Pick-up assembly; 421, Adsorption component; 422, Third driving component; 423, Fourth driving component;

[0043] 500, First detection device; 510, Detection camera; 520, Detection support mechanism; 600, Second detection device; 610, Weight measuring instrument; 620, Moisture analyzer; 700, Base frame device; 800, Recycling device; 900, Control system; A, Battery electrode sheet; B1, First detection area; B2, Second detection area; B3, Cutting area; B4, Recycling area. Detailed Implementation

[0044] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0045] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments. At the same time, the steps or actions in the method description can be rearranged or adjusted in a manner obvious to those skilled in the art. Therefore, the various orders in the specification and drawings are only for the clear description of a particular embodiment and do not imply a necessary order, unless otherwise stated that a particular order must be followed.

[0046] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages).

[0047] Please see Figures 1 to 11 This application provides an electrode testing device that can automatically perform cutting and sampling of battery electrodes (such as those processed by coating, extrusion, and drying) and sampling and testing of parameters such as weight and moisture content during the lithium battery production process. The electrode testing device includes an electrode feeding device 100, a laser cutting device 200, a first transfer device 300, a second transfer device 400, a first testing device 500, a second testing device 600, and other functional devices as needed (such as a base frame device 700, a recycling device 800, etc.).

[0048] For a clearer and more detailed description of the structure, operating principle, etc. of this electrode testing equipment, please refer to [link / reference]. Figure 3In some embodiments of this application, multiple functional areas are defined for the electrode inspection device, including a first inspection area B1, a second inspection area B2, and a cutting area B3. It is understood that these functional areas refer to the spatial areas occupied by related functional devices in the electrode inspection device when they cooperate to complete certain tasks (such as automatic cutting, automatic inspection, etc.). In other words, these functional areas are merely used to distinguish the relationships between the described objects (such as mutual cooperation relationships, relative spatial position relationships, etc.), and do not indicate or imply that the described objects are necessarily structurally laid out or configured according to specific functional areas.

[0049] Please see Figures 1 to 5 The electrode feeding device 100 is disposed on the base frame device 700 and is mainly used to feed battery electrode A to the cutting area B3. Exemplarily, the electrode feeding device 100 includes a conveyor belt mechanism 110 for carrying and transporting the battery electrode A, the conveyor belt mechanism 110 along... Figure 1 and Figure 4 The left and right directions are arranged in a way that spans the cutting area B3 or is at least partially located within the cutting area B3 on the base frame device 700. A material inlet structure 110a is provided in the area of ​​the conveyor belt mechanism 110 corresponding to the cutting area B3, which runs vertically through the conveyor belt mechanism 110. The conveyor belt mechanism 110 transports the battery electrode A it carries in an intermittent motion.

[0050] During the process of conveying battery electrode A by the conveyor belt mechanism 110, the battery electrode A can enter and stay in the cutting area B3 one by one in different areas or parts (which can be understood as the area to be cut) in the conveying direction of the conveyor belt mechanism 110, thereby achieving the purpose of conveying battery electrode A to the cutting area B3.

[0051] Of course, the electrode feeding device 100 can also adopt other suitable structural forms, as long as it can enable different areas to be cut of the same battery electrode A to enter and stay in the area to be cut B3 one by one.

[0052] Please see Figures 1 to 4 and Figure 6 The laser cutting device 200 is disposed on the base frame device 700 and located within the cutting area B3. It is mainly used to perform laser cutting on the battery electrode A to cut electrode samples of a preset specification from the battery electrode A. For example, the laser cutting device 200 includes a laser cutting mechanism 210 and a cutting support mechanism 220; wherein, the cutting support mechanism 220 is connected between the laser cutting mechanism 210 and the base frame device 700 to support the laser cutting mechanism 210 above the electrode feeding device 100 (specifically, the feed port structure 110a).

[0053] When the conveyor belt mechanism 110 transports a certain area of ​​the battery electrode A to be cut to the cutting area B3 and stops below the laser cutting mechanism 210, the laser cutting mechanism 210 emits a laser to the battery electrode A, thereby cutting the battery electrode A to produce an electrode sample with a preset shape and size (such as a circular electrode sample). The electrode sample can then fall below the conveyor belt mechanism 110 through the feed port structure 110a, thus completing the automatic cutting operation of the battery electrode A.

[0054] Of course, depending on the different structure and functional configuration of the electrode feeding device 100, the laser cutting device 200 can also cooperate with the electrode feeding device 100 in other ways to complete the automatic cutting of the battery electrode A; for example, the laser cutting device 200 is mounted on the stationary part of the conveyor belt mechanism 110 and located above the material inlet structure 110a; or, the material inlet structure 110a is set as a functional device that is relatively independent of the laser cutting device 200 and the electrode feeding device 100, and is located below the laser cutting device 200 in the cutting area B3, so as to receive and position the battery electrode A conveyed by the electrode feeding device 100, and provide support for the laser cutting device 200 to laser cut the battery electrode A.

[0055] Please see Figures 1 to 3 and Figure 7 and Figure 10 The first transfer device 300 is disposed on the base frame device 700 and is configured to move controllably between the cutting area B3 and the first detection area B1; while the first detection device 500 is disposed within the first detection area B1. The first transfer device 300 is mainly used to receive the electrode sample cut from the battery electrode A from the cutting area B3 and transfer the electrode sample to the first detection area B1; the first detection device 500 is mainly used to perform appearance information detection on the electrode sample received by the first transfer device 300, so as to provide support for obtaining information about the shape, size and whether there are scratches or damage on the surface of the electrode sample.

[0056] For example, please refer to Figure 7 The first transfer device 300 includes a first drive unit 310 and a carrier tray 320. The first drive unit 310 can be a cylinder device or a linear power device assembled from functional components such as a motor and linear modules. The carrier tray 320 is coupled to the power end of the first drive unit 310. The first drive unit 310 can drive the carrier tray 320 to perform linear reciprocating motion between the cutting area B3 (specifically, below the laser cutting device 200 or the feed port structure 110a) and the first detection area B1 (specifically, below the first detection device 500).

[0057] For example Figure 1 and Figure 3As shown, the movement direction of the carrier tray 320 is a front-to-back direction perpendicular to the conveying direction of the electrode feeding device 100 (that is, the first detection area B1 is located behind the cutting area B3 in the front-to-back direction). When the carrier tray 320 is stopped in the cutting area B3 and located below the material outlet structure 110a, the electrode sample cut from the battery electrode A can fall onto the carrier tray 320 through the material outlet structure 110a, and then the first driving member 310 can drive the carrier tray 320 to carry the electrode sample to the first detection area B1.

[0058] Of course, the first transfer device 300 can also adopt other suitable structures. For example, the carrier tray 320 adopts a turntable structure. The carrier tray 320 is driven to rotate by the first driving member 310, and different positions of the carrier tray 320 can be switched between the cutting area B3 (specifically, below the material outlet structure 110a) and the first detection area B1, thereby realizing the transfer of the electrode sample.

[0059] For example, please refer to Figure 1 and Figure 10 The first detection device 500 includes a detection camera 510 and a detection support mechanism 520; wherein, the detection support mechanism 520 supports and positions the detection camera 510 above the first transfer device 300. When the first transfer device 300 (specifically, the carrying tray 320) transfers the electrode sample into the first detection area B1 and is located below the detection camera 510, the detection camera 510 can be used to capture images (e.g., take pictures) of the electrode sample, thereby providing support for obtaining appearance information such as the shape, size, and surface defects of the electrode sample. For example, the detection information obtained by the detection camera 510 can be used to screen the electrode sample to distinguish whether the electrode sample meets the requirements for subsequent detection of parameters such as weight and moisture content, thereby ensuring the consistency of the electrode samples used in the detection process of parameters such as weight and moisture content, and thus providing support for improving the accuracy of the detection results of weight, moisture content, etc.

[0060] In some embodiments, the first detection device 500 can be set independently from the first transfer device 300, electrode loading device 200 and other moving devices. For example, the detection camera 510 can be mounted on other parts or in a spatial position independent of the base device 700 by the detection support mechanism 520. This can avoid vibration of the first detection device 500 when other moving devices move, thereby ensuring the accuracy of the detection results of the first detection device 500.

[0061] Of course, the first testing device 500 can also be mounted on the base frame device 700 (for example, mounted on the base frame device 700 through shock-absorbing and isolation components), which helps to enhance the compactness and integrity of the overall structure of the electrode testing equipment.

[0062] Please see Figures 1 to 3, Figure 8 and Figure 9 and Figure 10 The second transfer device 400 is disposed on the base frame device 700 and is configured to move controllably between the first detection area B1 and the second detection area B2; while the second detection device 600 is disposed within the second detection area B2; wherein, the second detection device 600 is mainly used to detect the weight, water content, etc. of the electrode sample to provide support for obtaining information such as the weight and water content of the battery electrode A; the second transfer device 400 is mainly used to transfer the electrode sample that has passed the appearance information inspection; for example, transferring the electrode sample that has passed the appearance inspection and meets the inspection standards such as weight and water content from the first transfer device 300 to the second detection device 600 located in the second detection area B2, or transferring the electrode sample that has not passed the appearance inspection (i.e., does not meet the inspection standards such as weight and water content) from the first transfer device 300 to the recycling device 800, or transferring the electrode sample that has been inspected by the second detection device 600 from the second detection device 600 to the recycling device 800.

[0063] For example, please refer to Figure 8 and Figure 9 The second transfer device 400 includes a second drive unit 410 and a pickup component 420. The second drive unit 410 can be a linear power device composed of functional components such as a motor and a linear module, similar to the first drive unit 310. The pickup component 420 is coupled to the power end of the second drive unit 410. The second drive unit 410 drives the pickup component 420 to move linearly back and forth between the first detection area B1 (specifically above the carrying tray 320) and the second detection area B2 (specifically above the second detection device 600).

[0064] For example Figure 1 and Figure 3 As shown, the movement direction of the pickup component 420 is the same as the conveying direction of the electrode feeding device 100 (that is, the second detection area B2 is located to the right of the first detection area B1 in the left-right direction, or the second transfer device 400 and the electrode feeding device 100 are arranged in parallel in the front-back direction). When the pickup component 420 moves to the first detection area B1 and is above the support tray 320, the pickup component 420 can pick up the electrode sample that has completed the appearance information detection from the support tray 320. Then, when the second driving member 410 drives the pickup component 420 to carry the electrode sample to the second detection area B2 and is above the second detection device 600, the pickup component 420 can release the electrode sample into the second detection device 600.

[0065] Understandably, the recycling device 800 can be arranged on the movement trajectory of the pickup component 420 so that the pickup component 420 can release the electrode samples picked up from the self-supporting tray 320 or the second detection device 600 into the recycling device 800, so as to realize the unloading and recycling operation of electrode samples that have not passed the appearance information detection and electrode samples that have completed the weight, moisture content and other tests.

[0066] In other embodiments, the second transfer device 400 may also adopt a non-linear motion structure. For example, the second transfer device 400 may adopt a manipulator structure with multiple degrees of freedom to meet the different structural architectures or operational requirements of the electrode testing equipment. In other words, as long as the second transfer device 400 has the function of picking up and releasing electrode samples and transferring electrode samples between different spatial positions or different functional devices, it is acceptable.

[0067] For example, please refer to Figure 1 , Figure 2 and Figure 11 The second detection device 600 includes a weighing instrument 610 (e.g., an electronic scale) and a moisture meter 620 disposed in the second detection area B1. The weighing instrument 610 and the moisture meter 620 are arranged side by side along the movement direction or trajectory of the pickup component 420 (e.g., ...). Figure 1 As shown, the gravimeter 610 and the moisture analyzer 620 are arranged sequentially in the left-right direction on the right side of the first detection device 500 and behind the electrode feeding device 100. The gravimeter 610 is mainly used to detect the weight information of the electrode sample, and the moisture analyzer 620 is mainly used to detect the moisture content information of the electrode sample.

[0068] After the first detection device 400 completes the appearance information detection of the electrode sample, the second transfer device 400 can transfer the appearance-detected electrode sample to the weighing instrument 610 for weighing. The weight information of the electrode sample obtained by the weighing instrument 610 can support the determination of whether the weight of battery electrode A meets the process requirements. Then, the second transfer device 400 transfers the electrode sample from the weighing instrument 610 to the moisture analyzer 610. The moisture analyzer 610 performs heating and dehumidification on the electrode sample. By comparing the weight of the electrode sample before and after heating and dehumidification, the moisture content information of battery electrode A can be obtained, thus supporting the determination of whether the moisture content of battery electrode A meets the process requirements.

[0069] Accordingly, after the parameters such as weight and moisture content are tested, the electrode sample can be transferred from the moisture analyzer 610 to the recovery device 800 by the second transfer device 400, thereby realizing the feeding and recovery of the electrode sample.

[0070] In some embodiments, the second detection device 600 can be independently and separately arranged from the electrode feeding device 100, the laser cutting device 200, the first transfer device 300, and the second transfer device 400. For example, the electrode feeding device 100, the laser cutting device 200, the first transfer device 300, and the second transfer device 400 are all arranged on the base frame device 700, while the second detection device 600 is independent of the base frame device 700 or separately arranged from the base frame device 700. This can avoid vibration of the second detection device 600 when other moving devices move, which is beneficial to improving the accuracy of the detection results of the second detection device 600.

[0071] Of course, the second testing device 600 can also be installed on the base frame device 700 (for example, by means of shock-absorbing and isolation components, etc.). In this way, the relevant functional devices can be structurally integrated through the base frame device 700, thereby improving the compactness and integrity of the overall structure of the electrode testing equipment.

[0072] In other embodiments, either the weighing instrument 610 or the moisture analyzer 620 may be selected to provide different detection functions for the electrode detection device, thereby meeting different application requirements.

[0073] Firstly, by using the laser cutting device 200 (specifically, the laser cutting mechanism 210) to emit a laser towards the battery electrode A, not only can the efficiency of electrode cutting be effectively improved and damage to the electrode sample reduced, but also, based on the specifications of the battery electrode A (such as the width of the electrode film area, the total length of the electrode, etc.) and the specifications of the electrode sample preset for testing needs, electrode samples of the same shape, size and quantity can be accurately cut from different areas of the battery electrode A; in other words, the shape and size of the electrode sample can be adjusted as needed to meet testing requirements.

[0074] Secondly, before using the second detection device 600 to detect information such as the weight and moisture content of the electrode sample, the first detection device 500 first detects the appearance information of the electrode sample. This can eliminate some electrode samples that do not conform to the preset shape and size or have surface damage, so that the electrode samples detected by the second detection device 600 have basically the same appearance information, which helps to ensure the accuracy of the weight or moisture content detection results.

[0075] For example, since the sample electrodes weighed by the weighing instrument 610 have the same shape, size and surface condition, based on the weight information of each sample electrode obtained by the weighing instrument 610, the weight of different areas of battery electrode A, whether the overall weight of battery electrode A is uniform, and whether the weight of battery electrode A meets the process requirements can be judged and analyzed more accurately.

[0076] For example, the moisture analyzer 620 can be used to test the moisture content of multiple electrode samples with the same shape, size and surface condition at one time and in batches. Based on the moisture content information obtained by the moisture analyzer 620, the moisture content of different areas of battery electrode A, whether the overall moisture content of battery electrode A is uniform, and whether the moisture content of battery electrode A meets the process requirements can be more accurately determined and analyzed.

[0077] Thirdly, based on the characteristics of the first transfer device 300 and the second transfer device 400 being able to transfer electrode samples in different functional areas, the electrode testing equipment can simultaneously perform operations such as electrode cutting, appearance information detection, weight detection, and moisture content detection, effectively reducing the testing cycle and improving testing efficiency. For example, in the entire process, while the second testing device 600 is performing weight and other detections on the first-order electrode sample, the second testing device 600 is also performing appearance information detection on the second-order electrode sample, while the laser cutting device 200 is cutting the battery electrode A to form the third-order electrode sample.

[0078] In one embodiment, please refer to Figure 4 and Figure 5 The electrode feeding device 100 also includes a pressing mechanism 120, which is vertically and vertically mounted above the conveyor belt mechanism 110. The pressing mechanism 120 is arranged on both sides (e.g., left and right sides) of the feed inlet structure 110 along the conveying direction of the conveyor belt mechanism 110. Exemplarily, the pressing mechanism 120 includes a pressure roller 121 and a pressing drive 122. The pressing drive 122 can be a linear power device such as a cylinder or a linear motor. The pressure roller 121 is coupled to the power end of the pressing drive 122, and the pressing drive 122 drives the pressure roller 121 to move vertically.

[0079] When the conveyor belt mechanism 110 transports a certain area of ​​the battery electrode A to be cut to the cutting area B3 and pauses the conveying action, the pressing mechanism 120 (specifically, the pressing roller 121) moves downward relative to the conveyor belt mechanism 110, so that the battery electrode A can be pressed and fixed on the conveyor belt mechanism 110 from both sides of the material outlet structure 110a, thereby ensuring that the area of ​​the battery electrode A to be cut flatly covers the material outlet structure 110a; then the laser cutting device 200 can emit a laser to perform laser cutting on the battery electrode A.

[0080] In this way, by using the pressing mechanism 120 to position the area to be cut of the battery electrode A, it can be ensured that the area to be cut of the battery electrode A has good flatness, and the laser cutting effect is avoided due to the positional displacement of the battery electrode A when the laser cutting device 200 performs the cutting action. This provides strong support for the laser cutting device 200 to accurately cut the battery electrode A and obtain electrode samples of preset specifications.

[0081] In some embodiments, the electrode feeding device 100 may also include a vacuum adsorption structure that cooperates with the conveyor belt mechanism 110. For example, the vacuum adsorption structure may be arranged on the left and right sides of the material inlet structure 110a along the conveying direction of the conveyor belt mechanism 110. In this way, when the conveyor belt mechanism 110 conveys the area to be cut of the battery electrode A to the position covering the material inlet structure 110a and pauses the conveying action, the vacuum adsorption structure can be used to position the battery electrode A on the conveyor belt mechanism 110 from both sides of the material inlet structure 110a, thereby creating conditions for the laser cutting device 200 to accurately cut the battery electrode A.

[0082] Of course, the conveyor belt mechanism 110 can also be configured with a vacuum adsorption structure. For example, the conveyor belt of the conveyor belt mechanism 110 includes a suction cup connected to a vacuum source pipeline. In this way, during the process of conveying the battery electrode A, the battery electrode A can be prevented from shifting position on the conveyor belt mechanism 110, ensuring that the area to be cut of the battery electrode A can be accurately conveyed into the cutting area B3.

[0083] In some embodiments, please refer to Figure 5 The electrode feeding device 100 also includes a limiting mechanism 130, which is configured to move controllably relative to the conveyor belt mechanism 110 (for example, the moving direction of the limiting mechanism 130 is a front-back direction perpendicular to the conveying direction of the conveyor belt mechanism 110). For example, the limiting mechanism 130 includes a limiting baffle 131 and a limiting drive member 132. The limiting drive member 132 can be a linear power device such as a cylinder or a linear motor. The limiting baffle 131 extends along the conveying direction of the conveyor belt mechanism 110 and is located on the side (e.g., the front and / or rear side) of the battery electrode A. The limiting drive member 132 is used to drive the limiting baffle 131 to move in a direction perpendicular to the conveying direction of the conveyor belt mechanism 110 (e.g., the front-back direction).

[0084] In this way, during the process of conveying battery electrode A by the conveyor belt mechanism 110, the limiting mechanism 130 can be used to block the battery electrode A from the side, thereby limiting the position and conveying direction of the battery electrode A on the conveyor belt mechanism 110, and ensuring that the area to be cut of the battery electrode A can accurately reach the cutting area B3.

[0085] In some embodiments, please refer to Figure 5The electrode feeding device 100 also includes a detection mechanism 140, which may include a sensor (such as a laser rangefinder sensor) fixedly installed above the conveyor belt mechanism 110. The detection mechanism 140 can detect dimensional information such as the film area width and the total length of the battery electrode A, so as to provide information support for the laser cutting device 200 to cut the battery electrode A.

[0086] For example, when the electrode length detected by the detection mechanism 140 reaches a preset length, the laser cutting device 200 can stop emitting laser light to end the laser cutting process, preventing damage to the conveyor belt mechanism 110, the first transfer device 300, etc., caused by continued laser emission. Furthermore, the laser cutting device 200 can determine the cutting shape or size of the electrode sample based on the film width information of the battery electrode A obtained by the detection mechanism 140.

[0087] In one embodiment, please refer to Figure 1 and Figure 6 The laser cutting mechanism 210 includes a laser 211 and a galvanometer-field mirror assembly 212. The laser 211 primarily emits a laser beam, while the galvanometer-field mirror assembly 212 is positioned along the laser emission path of the laser 211 to adjust the propagation path of the laser beam, thereby cutting electrode samples of a preset specification from the battery electrode A. Furthermore, based on the adjustment of the laser beam propagation path by the galvanometer-field mirror assembly 212, the size and shape of the electrode samples can be adjusted according to detection needs, providing support for subsequent detection of electrode samples using different methods or for separate monitoring of electrode samples of different shapes and sizes.

[0088] In one embodiment, please refer to Figure 7 The carrier tray 320 has multiple adsorption structures 321. The adsorption structure 321 may include a groove structure disposed on the carrier tray 320 and a pipeline structure connecting the groove structure to a vacuum source. The adsorption structure 321 may also be a suction cup structure disposed on the carrier tray 320. The multiple adsorption structures 321 are arranged sequentially along the movement direction of the carrier tray 321, for example, arranged in a straight line at intervals, or arranged at intervals around the rotation axis of the carrier tray 320.

[0089] The adsorption structure 321 can adsorb and fix a corresponding electrode sample onto the carrier tray 320 to prevent the electrode sample from accidentally falling or detaching from the carrier tray 320, thereby providing support for the smooth transfer of the electrode sample and accurate detection of the appearance of the electrode sample. At the same time, by controlling the movement stroke and dwell position of the carrier device 320, the carrier tray 320 can simultaneously carry and transfer multiple electrode samples by means of multiple adsorption structures 321. For example, when the electrode sample adsorbed and fixed by one adsorption structure 321 is located at a position that can be detected by the second detection device 600, the electrode sample adsorbed and fixed by another adsorption structure 321 is located at a position that can be picked up by the second transfer device 400.

[0090] Therefore, by taking advantage of the fact that the carrying tray 320 can carry or support multiple electrode samples, it can provide support for the laser cutting device 200, the first detection device 500 and the second transfer device 400 to perform related actions simultaneously, and avoid the working time or detection efficiency of the electrode detection equipment being affected by the waiting time required by individual functional devices during the transfer of electrode samples.

[0091] In one embodiment, please refer to Figure 8 and Figure 9 The pickup assembly 420 includes an adsorption element 421, a third driving element 422, and a fourth driving element 423. The adsorption element 421 may include a suction cup structure connected to a vacuum source pipeline, primarily used for adsorbing and releasing electrode samples. The third driving element 422 may be a power device such as a motor capable of outputting rotational motion. The power end of the third driving element 422 is coupled to the adsorption element 421, primarily used to drive the adsorption element 421 around a preset vertical axis (see [link to relevant documentation]). Figure 9 The bold dashed line shown rotates to adjust the angle of the adsorption element 421. The fourth drive element 423 can be a cylinder (e.g., a rodless cylinder) or other power device capable of outputting linear motion. The fourth drive element 423 is connected between the second drive element 410 and the third drive element 422, and is mainly used to drive the third drive element 422 to move the adsorption element 421 up and down along the direction of the preset axis (i.e., the vertical direction).

[0092] During the process of transferring electrode samples by the pickup component 420, the fourth driving member 423 can drive the adsorption member 421 to move closer to or further away from the first transfer device 300 (specifically, the carrier tray 320) in the first detection area B1 in a vertical direction, so as to adsorb and pick up the electrode sample from the first transfer device 300; driving the adsorption member 421 to move closer to or further away from the second detection device 600 in the second detection area B2 in a vertical direction can release the electrode sample into the second detection device 600 or adsorb and pick up the electrode sample from the second detection device 600; this can avoid structural interference between the pickup component 420 and other functional devices when it moves, and can also achieve accurate pickup and release of the electrode sample.

[0093] Meanwhile, by adjusting the angle and position of the adsorption element 421 through the third driving element 422, multiple electrode samples can be laid flat in the heating chamber of the moisture analyzer 620, so that the moisture analyzer 620 can perform batch heating and dehumidification treatment on multiple electrode samples at the same time, which is beneficial to improving the efficiency of moisture content information detection.

[0094] In some embodiments, please refer to Figure 11 The number of moisture analyzers 620 can be set to multiple, such as two or more; multiple moisture analyzers 620 can be arranged side by side along the movement direction of the pickup component 420. By using multiple moisture analyzers 620, more electrode samples can be subjected to heating and dehumidification treatment and moisture content detection, and conditions can be created to improve the efficiency of electrode testing equipment.

[0095] As described above, in some embodiments, the electrode testing equipment further includes a recycling device 800, and a recycling area B4 is also included among the multiple functional areas, with the recycling device 800 disposed within the recycling area B4; correspondingly, the second transfer device 400 is configured to controllably move between the first testing area B1, the second testing area B2, and the recycling area B4. Exemplarily, the recycling device 800 includes a recycling container disposed on the base frame 700 and located within the recycling area B4.

[0096] The second transfer device 400 can directly transfer electrode samples that fail the appearance inspection to the recycling device 800. At the same time, after the second detection device 600 completes the detection of information such as the weight and moisture content of the electrode samples, the second transfer device 400 can also transfer the electrode samples in the second detection device 600 to the recycling device 800; thus, the feeding and recycling of electrode samples can be realized.

[0097] In some embodiments, please refer to Figure 2The electrode testing equipment also includes a control system 900. This control system 900 can be understood as a collection of related functional devices within the electrode testing equipment that manage and control other functional devices. For example, the control system 900 may include a computer system. The electrode loading device 100, laser cutting device 200, first transfer device 300, second transfer device 400, first testing device 500, and second testing device 600 are all electrically connected to the control system 900. This control system 900 can support the realization of all or part of the functions of the electrode testing equipment. For example, controlling the electrode... The feeding device 100 operates intermittently to transport different areas to be cut of the battery electrode A one by one to the position located between the laser cutting device 200 and the first transfer device 300 (i.e., cutting area B3); for example, by acquiring the appearance information detected by the first detection device 500, the second transfer device 400 is controlled to transfer the electrode samples that meet the requirements to the second detection device 600 and transfer the electrode samples that do not meet the requirements to the recycling device 800; furthermore, by acquiring the detection information of the second detection device 600, it is determined whether the weight or moisture content of the battery electrode A meets the process requirements, etc.

[0098] It should be noted that the function of the control system 900 in this application to coordinate and manage the transfer device, detection device, electrode feeding device 100, laser cutting device 200 and other functional devices is the basic function of the control system 900, and is existing technology or can be referred to existing technology; this application does not improve the specific structure and functional principle of the control system 900, but the improvement of this application is reflected in the structural architecture of the electrode detection equipment, the structural arrangement relationship and cooperation relationship between related functional devices.

[0099] In other embodiments, the control system 900 may also be a functional device or system (such as a computer system) used in conjunction with the electrode testing equipment. When the electrode testing equipment is used, the transfer device, testing device, electrode feeding device 100, laser cutting device 200, etc. are connected to the control system 900 by signal connection to achieve management and control of the relevant functional devices.

[0100] Based on the structural architecture and functional configuration of the electrode inspection device, in some embodiments, the electrode inspection device can automatically cut and inspect the battery electrode A by following the process.

[0101] 1. The battery electrode A to be tested is positioned in the center of the conveyor belt mechanism 110 using the limiting mechanism 130; after the conveyor belt mechanism 110 is started, the battery electrode A is transported towards the cutting area B3; during this process, the film area width, total length of the electrode, and other parameters of the battery electrode A can be measured with the help of the detection mechanism 140.

[0102] 2. When a portion of the battery electrode A enters the cutting area B3 and covers the material inlet structure 110a (or is located below the laser cutting device 200), the conveyor belt mechanism 110 stops conveying; the pressing mechanism 120 moves downward and presses the battery electrode A against the conveyor belt mechanism 110.

[0103] 3. The laser cutting device 200 emits a laser to the battery electrode A. At this time, the laser beam path emitted by the laser 211 is adjusted by the galvanometer field lens assembly 212, so as to realize the cutting process of the battery electrode A and obtain an electrode sample with a preset shape and size.

[0104] 4. The electrode sample falls through the feed port structure 110a to the first transfer device 300 (specifically, the support tray 320), and then the second transfer device 300 transfers the electrode sample to the first detection area B1 and below the first detection device 500.

[0105] 5. The first detection device 500 detects the shape, size, surface defects, etc. of the electrode sample in the second transfer device 300 to obtain information about the appearance of the electrode sample.

[0106] 6. The second transfer device 400 transfers the electrode samples that fail the appearance inspection to the recycling device 800, and transfers the electrode samples that pass the appearance inspection to the second inspection device 600.

[0107] Regarding the detection process of the second detection device 600, the second transfer device 400 first transfers the electrode sample to the weighing instrument 610 for weighing. The weighing instrument 610 acquires the weight information of the battery electrode (in specific implementation, the weighing instrument 610 can upload the weight information to the control system 900). Then, the second transfer device 400 transfers the weighed electrode sample to the moisture analyzer 620. When the total weight of the electrode sample in the moisture analyzer 610 reaches a preset weight (e.g., 6 ± 0.5 g) or the number of electrode samples reaches a preset number, the moisture analyzer 610 performs heating and dehumidification. After heating and dehumidification for a preset time (e.g., 5 min), the moisture analyzer 610 can upload the data it has obtained (including the weight data before and after heating and dehumidification) to the control system 900. Thus, by comparing the weight data before and after heating and dehumidification, the moisture content information of battery electrode A can be obtained.

[0108] 7. After the weight, moisture content and other detection actions are completed, the second transfer device 400 transfers the electrode sample in the second detection device 600 (specifically, the moisture analyzer 610) to the recovery device 800.

[0109] In the above process steps, regarding the transfer process of electrode samples, based on the structure and functional configuration of the first transfer device 300, during the process of the first electrode sample being transported to the first detection area B1, the laser cutting device 200 prepares to cut the second electrode sample; after the first electrode sample is picked up by the second transfer device 300, the first transfer device 300 returns to the cutting area B3 to receive the cut second electrode sample; while the second electrode is being transported to the first detection area B1, the laser cutting device 200 is preparing to cut the third electrode sample; and so on, until all electrode samples received by all moisture analyzers 620 reach a preset weight or preset quantity, or when all are ready to start heating the electrode samples, all steps and related functional devices involved before the moisture content information detection are suspended.

[0110] It should be noted that, Figure 2 The bold dashed line with double arrows in the middle can indicate the approximate movement path or direction of the second transfer device 400. Figure 2 The bold dashed line with double arrows can indicate the approximate movement path or direction of the first transfer device 300. Figure 2 The solid line with an arrow in the middle can indicate the conveying direction of the electrode feeding device 100.

[0111] The above examples illustrate this application only to aid understanding and are not intended to limit its scope. Those skilled in the art to which this application pertains can make various simple deductions, modifications, or substitutions based on the ideas presented.

Claims

1. An electrode testing device, characterized in that, The electrode testing device has multiple functional areas, including a cutting area, a first testing area, and a second testing area. The electrode testing equipment includes: An electrode feeding device is used to feed battery electrodes into the cutting area; A laser cutting device is disposed in the cutting area, and the laser cutting device is used to cut the battery electrode to form an electrode sample; A first transfer device is controllably movable between the cutting area and the first detection area, the first transfer device being used to transfer the electrode sample received from the cutting area to the first detection area; A first detection device is disposed in the first detection area, and the first detection device is used to detect the appearance information of the electrode sample; A second transfer device and a second detection device, wherein the second transfer device can be controllably moved between the first detection area and the second detection area, and the second detection device is disposed in the second detection area; the second transfer device is used to transfer the electrode sample picked up from the first transfer device to the second detection device, and the second detection device is used to detect the weight information and / or water content information of the electrode sample.

2. The electrode testing equipment as described in claim 1, characterized in that, The first transfer device includes a first drive member and a carrier tray; the power end of the first drive member is coupled to the carrier tray for driving the carrier tray to move between the cutting area and the first detection area; the laser cutting device includes a laser cutting mechanism, and / or the first detection device includes a detection camera; wherein: The laser cutting mechanism is located above the electrode feeding device and is used to cut the battery electrode; when the carrying tray moves to the cutting area, it is located below the electrode feeding device to receive the electrode sample falling from the electrode feeding device. When the support tray moves to the first detection area, it is located below the detection camera; the detection camera is used to capture images of the electrode sample in the support tray to obtain the appearance information of the electrode sample.

3. The electrode testing equipment as described in claim 2, characterized in that, The support tray has multiple adsorption structures, which are arranged sequentially along the movement direction of the support tray; the adsorption structures are used to adsorb and fix a corresponding electrode sample onto the support tray.

4. The electrode testing equipment as described in claim 2, characterized in that, The laser cutting mechanism includes a laser and a galvanometer field lens assembly. The laser is used to emit a laser beam. The galvanometer field lens assembly is disposed in the laser emission path of the laser and is used to adjust the propagation path of the laser beam.

5. The electrode testing equipment as described in claim 1, characterized in that, The second transfer device includes a second drive member and a pickup assembly; the power end of the second drive member is coupled to the pickup assembly for driving the pickup assembly to move between the first detection area and the second detection area; wherein, when the pickup assembly moves to the first detection area, it is positioned above the first transfer device to pick up the electrode sample in the first transfer device; when the pickup assembly moves to the second detection area, it is positioned above the second detection device to release the electrode sample into the second detection device.

6. The electrode testing equipment as described in claim 5, characterized in that, The pickup assembly includes an adsorption element, a third driving element, and a fourth driving element; wherein, the adsorption element is used to adsorb and release the electrode sample; the power end of the third driving element is coupled to the adsorption element and is used to drive the adsorption element to rotate around a preset axis. The fourth driving member is connected between the body of the third driving member and the power end of the second driving member; the fourth driving member is used to drive the third driving member to move the adsorption member up and down relative to the first transfer device or the second detection device along the direction of the preset axis.

7. The electrode testing equipment as described in claim 5, characterized in that, The second detection device includes a gravimeter and a moisture meter, which are arranged side by side along the movement direction of the pickup component. The gravimeter is used to detect the weight information of the electrode sample, and the moisture meter is used to detect the water content information of the electrode sample. The number of the moisture meters is set to one or more.

8. The electrode testing equipment as described in claim 1, characterized in that, The electrode feeding device includes a conveyor belt mechanism and a pressing mechanism; wherein: The conveyor belt mechanism is used to carry and transport the battery electrode sheets, and the conveyor belt mechanism has a material inlet structure; the material inlet structure is located in the cutting area and is used to provide a path for the first transfer device to receive the electrode sheet sample; The pressing mechanism is vertically and flexibly positioned above the conveyor belt mechanism, and is arranged on both sides of the feed inlet structure along the conveying direction of the conveyor belt mechanism; the pressing mechanism is used to press the battery electrode sheet against the conveyor belt mechanism when the conveyor belt mechanism stops conveying.

9. The electrode testing equipment as described in claim 8, characterized in that, The electrode feeding device further includes a limiting mechanism and / or a detection mechanism; wherein: The limiting mechanism can be controllably moved relative to the conveyor belt mechanism to limit the position of the battery electrode on the conveyor belt mechanism; the moving direction of the limiting mechanism is perpendicular to the conveying direction of the conveyor belt mechanism. The detection mechanism is fixedly installed above the conveyor belt mechanism and is used to detect the size information of the battery electrode.

10. The electrode testing equipment as described in claim 1, characterized in that, The electrode inspection equipment also includes a control system, and the first transfer device, the second transfer device, the first inspection device, the second inspection device, the laser cutting device, and the electrode feeding device are electrically connected to the control system; And / or the electrode testing equipment further includes a base frame device, wherein the electrode feeding device, the laser cutting device, the first transfer device and the second transfer device are all disposed on the base frame device, and the second testing device is disposed independently and separately from the base frame device; And / or the electrode testing device further includes a recycling device, and the plurality of functional areas further include a recycling area, the recycling device being disposed in the recycling area; wherein the second transfer device is controllably movable between the first testing area, the second testing area and the recycling area, so as to transfer the electrode sample picked up from the first transfer device or the first testing device to the recycling device.

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