Pole piece thickness testing device

Abstract

The utility model relates to the technical field of battery manufacturing, in particular to a pole piece thickness testing device which comprises a workbench, a lifting component, a pressing component, a moving component, a telescopic supporting piece and a thickness measuring component. Wherein the pressing component is connected with the workbench through the lifting component and is used for pressing a pole piece passing through the workbench; the moving component and the pressing component are slidably connected in the first preset direction, and the telescopic supporting piece and the moving component are slidably connected in the second preset direction. The thickness measuring meter is arranged on the telescopic supporting piece and used for detecting the thickness of the pole piece located below the thickness measuring meter in the third preset direction. According to the novel pole piece thickness testing device, the thickness of a rolled pole piece can be rapidly and accurately measured, the complex steps of manual piece cutting and sampling in the testing process are reduced, meanwhile, the equipment cost and the maintenance difficulty are reduced, and the high-efficiency and low-cost detection requirements of battery production enterprises are met.

Description

Technical Field

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

[0002] Currently, in battery production, the rolling process is a crucial step in the lithium-ion electrode manufacturing process. Rolling involves pressing the coated battery electrodes to thin and compact the coating, achieving the required compaction density. Electrode thickness is a critical control parameter during rolling, significantly impacting battery performance and quality. Uneven electrode thickness or thickness exceeding design tolerances can lead to inconsistent battery capacity, increased internal resistance, shortened cycle life, and even safety issues.

[0003] In the rolling process, common methods for testing electrode thickness include offline contact measurement and online non-contact measurement. Offline contact measurements, such as those using handheld micrometers and handheld thickness gauges, offer high accuracy, but their limited probe caliper positioning depth, especially in secondary rolling processes, prevents rapid measurement and calibration of the electrode in all directions on the rolling line. This necessitates manual cutting and sampling, leading to numerous error factors, low efficiency, and the need for re-attaching and scrapping of some electrodes. Online non-contact measurements, such as laser thickness measurement and X-ray thickness measurement, offer rapid detection, but these methods are expensive, require stringent environmental conditions, and their accuracy is easily affected by environmental factors. They often require offline calibration and measurement using handheld thickness gauges, failing to meet the demands of large-scale battery production lines for rapid, high-precision, and low-cost electrode thickness testing. Therefore, there is an urgent need to develop an offline testing device capable of rapidly and conveniently detecting the thickness of rolled electrodes. Utility Model Content

[0004] The purpose of this application is to provide an electrode thickness testing device, which to some extent solves the technical problem of the urgent need to develop an offline testing device that can quickly and conveniently detect the thickness of rolled electrodes.

[0005] This application provides an electrode thickness testing device, comprising: a worktable, a lifting component, a pressing component, a moving component, a telescopic support component, and a thickness measuring component; wherein, the pressing component is connected to the worktable via the lifting component and is used to press the electrode passing over the worktable; the moving component is slidably connected to the pressing component along a first preset direction, and the telescopic support component is slidably connected to the moving component along a second preset direction; the thickness measuring instrument is disposed on the telescopic support component and is used to detect the thickness of the electrode along a third preset direction and located below it.

[0006] In the above technical solution, the electrode thickness testing device further includes a first mounting component, a second mounting component, and a spring; wherein the first mounting component and the second mounting component are disposed on the same side of the telescopic support and are both connected to the telescopic support; along the third preset direction, the second mounting component is disposed below the first mounting component, and the spring is disposed between the two, and the two ends of the spring are respectively connected to the two.

[0007] The number of springs is two, and they are arranged sequentially at intervals along a direction perpendicular to the third preset direction; the thickness measuring component is disposed between the two springs; the thickness measuring component is connected to the second mounting component, and the detection probe of the thickness measuring component extends through the clearance through hole on the second mounting component to the side of the second mounting component near the electrode.

[0008] In any of the above technical solutions, the electrode thickness testing device further includes a first guide member arranged along the third preset direction, the first guide member being fixedly connected to the first mounting member, and the spring and the second mounting member being slidably connected to the first guide member.

[0009] In any of the above technical solutions, the electrode thickness testing device further includes a second guide member arranged along the third preset direction, the first guide member being fixedly connected to the first mounting member, and the second mounting member and the thickness measuring member being slidably connected to the second guide member.

[0010] In any of the above technical solutions, the pressing member is further provided with an insulating protective layer covering at least the lower surface near the electrode.

[0011] In any of the above technical solutions, the electrode thickness testing device further includes an insulating base plate, which is disposed on the worktable and located below the pressing member, and is used to place the electrode.

[0012] In any of the above technical solutions, the number of pressing members is two, and they are arranged sequentially at intervals along the moving direction of the electrode sheet, and each of the pressing members is arranged in a direction perpendicular to the moving direction of the electrode sheet; the two ends of the moving member are respectively slidably connected to the two pressing members.

[0013] In any of the above technical solutions, the telescopic support member is further defined as a telescopic rod.

[0014] In any of the above technical solutions, the telescopic support is further described as an electric telescopic rod or a pneumatic telescopic rod.

[0015] In any of the above technical solutions, the lifting component is further described as an electric telescopic rod or a pneumatic telescopic rod.

[0016] In any of the above technical solutions, the telescopic support is further provided with a slider, the moving component is a slide rail, and the slider is slidably connected to the slide rail.

[0017] In any of the above technical solutions, the moving component is further provided with a slider, the pressing component is provided with a slide rail, and the slider is slidably connected to the slide rail; or the moving component is a linear module, and the moving component and the pressing component are slidably connected through another linear module.

[0018] In any of the above technical solutions, a scale is further provided on the moving component.

[0019] In any of the above technical solutions, a scale is further provided on the pressing component.

[0020] In any of the above technical solutions, the pressing member is further described as a rod-shaped structure.

[0021] In any of the above technical solutions, the thickness measuring component is further described as a thickness gauge.

[0022] In any of the above technical solutions, the first preset direction is a direction perpendicular to the conveying direction of the electrode sheet, the second preset direction is the conveying direction of the electrode sheet, and the third preset direction is the thickness direction of the electrode sheet.

[0023] Compared with the prior art, the beneficial effects of this application are as follows:

[0024] This application provides a novel electrode thickness testing device that enables rapid and accurate measurement of the thickness of rolled electrodes, reducing the complex steps of manual cutting and sampling during testing, while also lowering equipment costs and maintenance difficulty, thus meeting the high-efficiency and low-cost testing needs of battery manufacturers. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the electrode thickness testing device provided in the embodiments of this application;

[0027] Figure 2 Another schematic diagram of the electrode thickness testing device provided in the embodiments of this application.

[0028] Figure label:

[0029] 1-Workbench, 2-Lifting component, 3-Pressure component, 4-Moving component, 5-Telescopic support component, 6-Thickness measuring component, 7-First mounting component, 8-Second mounting component, 9-Spring, 10-Insulating base plate, 11-Electrode plate, a-First preset direction, b-Second preset direction, c-Third preset direction. Detailed Implementation

[0030] The technical solutions of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0031] The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in a variety of different configurations. Therefore, the following detailed description of the embodiments of this application provided in the drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application.

[0032] Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0035] The following reference Figure 1and Figure 2 This application describes an electrode thickness testing apparatus according to some embodiments.

[0036] See Figure 1 and Figure 2 As shown, an embodiment of this application provides an electrode thickness testing device, including: a worktable 1, a lifting component 2, a pressing component 3, a moving component 4, a telescopic support component 5, and a thickness measuring component 6; wherein, the pressing component 3 is connected to the worktable 1 through the lifting component 2 and is used to press the electrode 11 that has passed through the worktable 1. It should be noted that when using this device to test the thickness of the electrode 11 after roller pressing, it is only necessary to place the two take-up rollers on both sides of the device. In this way, the electrode 11 will directly pass through the worktable 1 of the device during the movement and transmission between the two take-up rollers, without having to cut the electrode 11 between the two take-up rollers, thus greatly improving the testing efficiency.

[0037] The moving component 4 and the pressing component 3 are slidably connected along the first preset direction a, and the telescopic support 5 is slidably connected to the moving component 4 along the second preset direction b. Preferably, the first preset direction a is perpendicular to the conveying direction of the electrode 11, and the second preset direction b is parallel to the conveying direction of the electrode 11. It can be seen that the telescopic support 5 can drive the thickness measuring component 6 to move laterally and longitudinally, increasing the detection range and improving the accuracy of the detection. Of course, the first preset direction a and the second preset direction b are not limited to the above and can be designed according to actual needs. The thickness measuring instrument is set on the telescopic support 5 and is used to detect the thickness of the electrode 11 located below it along the third preset direction c. Preferably, the third preset direction c is the height direction of the telescopic support 5, which is the conventional vertical direction. Of course, it is not limited to this and can be selected according to actual needs.

[0038] Based on the structure described above, this application provides an electrode thickness testing device, the working process of which is roughly as follows: After the electrode 11 is rolled, it is brought to this device. The lifting component 2 is lowered, and the lifting component 2 drives the pressing component 3 to descend. Finally, the pressing component 3 presses the electrode 11 flat on the worktable 1. Then, the telescopic support 5 drives the thickness detection component to move laterally and / or longitudinally to the detection position. Then, the telescopic support 5 retracts, i.e., descends, so that the thickness gauge contacts the electrode 11 and the thickness of the electrode 11 at this position is detected. After the detection is completed, the telescopic support 5 extends, i.e., rises, so that the thickness gauge separates from the electrode 11. Then, the telescopic support 5 drives the thickness detection component to move laterally and / or longitudinally to the next detection position, repeating the aforementioned detection process, thereby completing the thickness detection of the electrode 11 at different positions.

[0039] Therefore, this application provides a novel electrode thickness testing device that can quickly and accurately measure the thickness of the rolled electrode, reduce the complicated steps of manual cutting and sampling during testing, and reduce equipment costs and maintenance difficulty, so as to meet the needs of battery manufacturers for efficient and low-cost testing.

[0040] It should be noted that the working process of the electrode thickness testing device provided in this application is not limited to the above, and the working steps can be added, reduced or adjusted according to actual needs.

[0041] In this embodiment, preferably, as follows: Figure 1 As shown, the electrode thickness testing device also includes a first mounting component 7, a second mounting component 8, and a spring 9; wherein, the first mounting component 7 and the second mounting component 8 are disposed on the same side of the telescopic support 5 and are both connected to the telescopic support 5; along the third preset direction c, the second mounting component 8 is disposed below the first mounting component 7, and the spring 9 is disposed between the two, and the two ends of the spring 9 are respectively connected to the two, so it can be seen that the two mounting components are used to support the spring 9;

[0042] There are two springs 9, which are arranged sequentially at intervals along a direction perpendicular to the third preset direction c; the thickness measuring component 6 is disposed between the two springs 9; the thickness measuring component 6 is connected to the second mounting component 8, and the detection probe of the thickness measuring component 6 extends through the avoidance through hole on the second mounting component 8 to the side of the second mounting component 8 near the electrode 11. It can be seen that the avoidance through hole plays the role of avoiding the detection probe.

[0043] As can be seen from the structure described above, the spring 9 acts as a buffer to prevent the detection probe from making hard contact with the electrode 11, thus protecting the electrode 11 and the probe.

[0044] In this embodiment, preferably, the electrode thickness testing device further includes a first guide member (not shown in the figure) arranged along a third preset direction c. The first guide member is fixedly connected to the first mounting member 7, and the spring 9 and the second mounting member 8 are both slidably connected to the first guide member.

[0045] As can be seen from the structure described above, under the action of the first guide member, the spring 9 and the second mounting member 8 can only move along the third preset direction c, such as the vertical direction, without tilting, thus ensuring the accuracy and reliability of the detection results.

[0046] Furthermore, preferably, the second mounting member 8 has a through hole, and the first guide member passes through the through hole, thereby realizing the sliding connection between the second mounting member 8 and the first guide member.

[0047] It should be noted that the first guide component may not be required; the choice should be made based on actual needs.

[0048] In this embodiment, preferably, the electrode thickness testing device further includes a second guide member (not shown in the figure) arranged along a third preset direction c, the first guide member is fixedly connected to the first mounting member 7, and the second mounting member 8 and the thickness measuring member 6 are both slidably connected to the second guide member.

[0049] As can be seen from the structure described above, under the action of the second guide member, the second mounting member 8 and the thickness measuring member 6 can only move along the third preset direction c, such as the vertical direction, without tilting, thus ensuring the accuracy and reliability of the detection results.

[0050] Furthermore, preferably, both the second mounting component 8 and the thickness measuring component 6 are provided with through holes, and the second guide component passes through the through holes, thereby realizing the sliding connection between the second mounting component 8 and the thickness measuring component 6 and the second guide component.

[0051] It should be noted that a second guide component may not be required; the choice should be made based on actual needs.

[0052] In this embodiment, preferably, as follows: Figure 1 As shown, the lower surface of the pressing member 3 near the electrode 11 is covered with an insulating protective layer (not shown in the figure). Of course, it is not limited to this; the entire pressing member 3 can also be covered with an insulating protective layer, depending on the actual needs.

[0053] As can be seen from the structure described above, an insulating protective layer is provided on the lower surface of the pressing component 3 that contacts the electrode 11, making the lower surface of the pressing component 3 smoother and preventing damage or scratches to the electrode 11. It also has a certain degree of corrosion resistance and prevents the risk of metal shavings generated by friction.

[0054] Furthermore, preferably, the insulating protective layer is made of PTFE material. Of course, it is not limited to this and can also be made of other materials, depending on the actual needs.

[0055] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the electrode thickness testing device also includes an insulating base plate 10, which is disposed on the workbench 1 and located below the pressing member 3. The insulating base plate 10 is used to place the electrode 11.

[0056] As can be seen from the structure described above, the insulating base plate 10 is used as the base plate to support the electrode 11, ensuring the accuracy and stability of the measurement, and also playing a role in insulation and protection.

[0057] Furthermore, preferably, the insulating base plate 10 can be made of special wear-resistant and corrosion-resistant ceramic material, and the surface is polished to be smooth, so that zero-point calibration can be performed to ensure the accuracy and stability of the measurement. Of course, it is not limited to this and can be designed according to actual needs.

[0058] Furthermore, preferably, the length of the insulating base plate 10 can be 1.2m, the width can be 25cm, and the thickness can be 20mm. Of course, it is not limited to these and can be designed according to actual needs.

[0059] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, there are two pressing members 3, which are arranged sequentially at intervals along the moving direction of the electrode 11, and each pressing member 3 is arranged in a direction perpendicular to the moving direction of the electrode 11; the two ends of the moving member 4 are slidably connected to the two pressing members 3 respectively.

[0060] As can be seen from the structure described above, the use of two pressing components 3 improves the fixing effect on the electrode 11, making the electrode 11 flatter and improving the accuracy of the test. Moreover, the two pressing components 3 support both ends of the moving component 4, making the moving component 4 more stable.

[0061] Of course, the number of pressing components 3 is not limited to this, and can also be one. The specific selection depends on the actual needs. Correspondingly, if the stability of the moving component 4 is further guaranteed, a support frame can be set on one side of the moving component 4, and the support frame can avoid the electrode plate 11.

[0062] In this embodiment, preferably, as follows: Figure 1 As shown, the telescopic support 5 is an electric telescopic rod or a pneumatic telescopic rod, which can realize automatic extension and retraction without manual adjustment, improve detection efficiency, and save manpower. Of course, it is not limited to this. The telescopic support 5 can also be a regular manual telescopic rod, depending on the actual needs.

[0063] In this embodiment, preferably, as follows: Figure 1 As shown, the lifting component 2 is a telescopic rod, which has a simple structure, is easy to purchase, and has a long service life.

[0064] Further, preferably, such as Figure 1 As shown, the lifting component 2 is an electric telescopic rod or a pneumatic telescopic rod, which can realize automatic extension and retraction without manual adjustment, improve detection efficiency, and save manpower. Of course, it is not limited to this. The telescopic support component 5 can also be an ordinary manual telescopic rod, depending on the actual needs.

[0065] In addition, it should be noted that the lifting component 2 is not limited to the structure of a telescopic rod, but can also be a linear module, etc., depending on the actual needs.

[0066] In this embodiment, preferably, the telescopic support 5 is provided with a slider, the moving component 4 is a slide rail, and the slider is slidably connected to the slide rail, resulting in a stable structure and a longer service life. Of course, it is not limited to this; a groove can also be provided on the moving component 4, and the slider can move along the groove.

[0067] In this embodiment, preferably, the moving component 4 is provided with a slider, and the pressing component 3 is provided with a slide rail, with the slider and the slide rail slidably connected, resulting in a stable structure and a longer service life. Of course, it is not limited to this; the moving component 4 can also have a slide rail, and the pressing component 3 can be provided with a slider, which moves along the slide rail.

[0068] In this embodiment, preferably, the movable component 4 is provided with a scale (not shown in the figure) to facilitate the determination of the position of the measurement point. Of course, it is not limited to this and may not be provided.

[0069] In this embodiment, preferably, a ruler (not shown in the figure) is provided on the pressing component 3 to facilitate the determination of the position of the measuring point. Of course, it is not limited to this and may not be provided.

[0070] In this embodiment, preferably, as follows: Figure 1 and Figure 2 As shown, the pressing component 3 is a rod-shaped structure, which meets the pressing requirements of the electrode 11. Moreover, the contact area with the electrode 11 is small, which avoids damage to the electrode 11. In addition, the structure is simple and easy to process and manufacture. Of course, it is not limited to this. The pressing component 3 can also be a plate, depending on the actual needs.

[0071] In this embodiment, preferably, the thickness measuring component 6 is a thickness gauge. A high-precision thickness gauge employs the grating detection principle. During measurement, the scale grating shifts relative to the indicator grating, and the intersecting lines of the two gratings form moiré fringes. A photoelectric sensor detects the changes in the moiré fringes, converting the optical signal into an electrical signal. By detecting and counting the zero-crossing of the electrical signal, the number of moiré fringe movements can be determined. Combined with subdivision technology, each moiré fringe period is further subdivided, thereby achieving high-precision displacement measurement. Finally, the thickness data of the electrode 11 is obtained and displayed on a data display table. It can also have built-in Bluetooth functionality to transmit data to a computer. Its measurement accuracy can reach ±0.1μm, and the measurement thickness range is 0-40mm, which can meet the thickness measurement needs of different types of electrode 11. Of course, other types of thickness measuring components 6 can also be selected.

[0072] In this embodiment, preferably, the electrode thickness testing device further includes a controller, and when the telescopic support 5 is an electric telescopic rod or a pneumatic telescopic rod, and the lifting component 2 is an electric telescopic rod or a pneumatic telescopic rod, the controller is communicatively connected to the aforementioned telescopic support 5 and lifting component 2 respectively.

[0073] Of course, in order to enable the telescopic support 5 to move automatically, the moving component 4 can be replaced with a linear module and named the transverse linear module. Preferably, another linear module, namely the longitudinal module, is installed between the moving component 4, i.e. the transverse module, and the pressing component 3. In other words, the telescopic support 5 can be installed on the transverse module, the transverse module can be installed on the longitudinal module, and the longitudinal module can be installed on the pressing component 3. The transverse module and the longitudinal module are respectively connected to the controller for communication, so that automatic control can be achieved first, which saves more time and effort.

[0074] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. An electrode thickness testing device, characterized in that, include: The device comprises a worktable, a lifting component, a pressing component, a moving component, a telescopic support component, and a thickness measuring component; wherein the pressing component is connected to the worktable via the lifting component and is used to press the electrode sheet passing through the worktable; the moving component is slidably connected to the pressing component along a first preset direction, and the telescopic support component is slidably connected to the moving component along a second preset direction; the thickness measuring instrument is disposed on the telescopic support component and is used to detect the thickness of the electrode sheet located below it along a third preset direction.

2. The electrode thickness testing device according to claim 1, characterized in that, The electrode thickness testing device further includes a first mounting component, a second mounting component, and a spring; wherein the first mounting component and the second mounting component are disposed on the same side of the telescopic support and are both connected to the telescopic support; along the third preset direction, the second mounting component is disposed below the first mounting component, and the spring is disposed between the two, and the two ends of the spring are respectively connected to the two. The number of springs is two, and they are arranged sequentially at intervals along a direction perpendicular to the third preset direction; the thickness measuring component is disposed between the two springs; the thickness measuring component is connected to the second mounting component, and the detection probe of the thickness measuring component extends through the clearance through hole on the second mounting component to the side of the second mounting component near the electrode.

3. The electrode thickness testing device according to claim 2, characterized in that, The electrode thickness testing device further includes a first guide member disposed along the third preset direction, the first guide member being fixedly connected to the first mounting member, and the spring and the second mounting member being slidably connected to the first guide member; and / or The electrode thickness testing device further includes a second guide member arranged along the third preset direction. The first guide member is fixedly connected to the first mounting member, and the second mounting member and the thickness measuring member are slidably connected to the second guide member.

4. The electrode thickness testing device according to claim 1, characterized in that, The lower surface of the pressing member, at least near the electrode, is covered with an insulating protective layer.

5. The electrode thickness testing device according to claim 1, characterized in that, The electrode thickness testing device further includes an insulating base plate, which is disposed on the worktable and located below the pressing member. The insulating base plate is used to place the electrode; and / or The number of pressing members is two, and they are arranged sequentially at intervals along the moving direction of the electrode, and each of the pressing members is arranged in a direction perpendicular to the moving direction of the electrode; the two ends of the moving member are respectively slidably connected to the two pressing members.

6. The electrode thickness testing device according to claim 1, characterized in that, The telescopic support is a telescopic rod.

7. The electrode thickness testing device according to claim 6, characterized in that, The telescopic support is an electric telescopic rod or a pneumatic telescopic rod.

8. The electrode thickness testing device according to claim 1, characterized in that, The lifting component is an electric telescopic rod or a pneumatic telescopic rod.

9. The electrode thickness testing device according to claim 8, characterized in that, The telescopic support is equipped with a slider, the movable component is a slide rail, and the slider is slidably connected to the slide rail; and / or The moving component is provided with a slider, the pressing component is provided with a slide rail, and the slider is slidably connected to the slide rail; or the moving component is a linear module, and the moving component and the pressing component are slidably connected through another linear module.

10. The electrode thickness testing device according to any one of claims 1 to 9, characterized in that, The movable component is equipped with a scale; and / or A scale is provided on the pressing component; The pressing member is a rod-shaped structure; and / or The thickness measuring component is a thickness gauge; and / or The first preset direction is a direction perpendicular to the conveying direction of the electrode sheet, the second preset direction is the conveying direction of the electrode sheet, and the third preset direction is the thickness direction of the electrode sheet.

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