Pole piece detection device

Abstract

The utility model relates to the technical field of lithium ion battery manufacturing. The utility model provides a pole piece detection device, which comprises a support frame, a balance rod and a measuring part, the bottom of the support frame is fixed with a coating machine, the top of the support frame is rotatably connected with one end of the balance rod, the other end of the balance rod is connected with the measuring part, and the measuring part is provided with scales; the angle and direction of the measuring part relative to the pole piece are adjustable. According to the pole piece detection device, the balance rod and the supporting frame which are rotationally connected are arranged, the angle and the direction of the measuring part relative to the pole piece can be adjusted by rotating and adjusting the balance rod, so that the measuring part can be stably suspended right above the pole piece, and the position of the measuring part relative to the pole piece can be adjusted in real time; according to the pole piece detection device, errors caused by holding a caliper with a hand during manual measurement can be avoided, and meanwhile, when the coating size needs to be changed, the pole piece detection device does not need to be moved again, and only the measuring part needs to be moved.

Description

Technical Field

[0001] This utility model relates to the field of lithium-ion battery manufacturing technology, and more specifically, to an electrode detection device. Background Technology

[0002] The production process of lithium-ion batteries in related technologies involves many steps, such as slurry preparation, coating, rolling, cutting, winding, encapsulation, electrolyte injection, pre-charging, and formation. Each step is crucial to the battery cell, especially the front-end steps, which affect all subsequent steps. If a problem occurs, all subsequent steps will be affected to varying degrees. For example, the quality of the coating process directly affects the rolling, cutting, and winding processes, leading to the scrapping of electrode sheets. This not only increases the cost of battery production but also indirectly affects the coating of the positive and negative electrodes of the battery cell, ultimately impacting the battery's safety performance.

[0003] The inventors discovered that existing methods for measuring coating dimensions are all manual, involving holding calipers and measuring while suspended in the air above the coating interface. This introduces a certain degree of error into the measurement, as hand tremors combined with visual deviations can lead to significant errors in coating dimensions. Utility Model Content

[0004] The purpose of this invention is to provide an electrode testing device that can perform stable measurements on electrodes, avoiding errors caused by manual measurement with calipers.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides an electrode detection device, which is mounted on a coating machine. The coating machine is equipped with a coating mechanism, which is used to coat the electrode.

[0007] The electrode testing device includes a support frame, a balance bar, and a measuring part. The bottom of the support frame is fixed to the coating machine, the top of the support frame is rotatably connected to one end of the balance bar, and the other end of the balance bar is connected to the measuring part. The measuring part is provided with a scale.

[0008] The angle and direction of the measuring unit relative to the electrode are adjustable.

[0009] In an optional embodiment, the electrode detection device includes two balance bars arranged in parallel, one end of each balance bar being rotatably connected to the top of the support frame, and the other end being connected to the measuring unit.

[0010] In an optional embodiment, the support frame includes two support rods and a connecting rod. The bottom of the two support rods is provided with a base, which is connected to the coating machine. The connecting rod is connected between the two support rods, and the tops of the two support rods are respectively rotatably connected to the two balance bars.

[0011] In an optional embodiment, the support rod is telescopically oriented.

[0012] In an optional embodiment, the support rod includes a first support rod, a second support rod, and a pin. One end of the first support rod is provided with a telescopic groove and a plurality of first positioning holes. The plurality of first positioning holes are spaced apart along the extension direction of the telescopic groove. The telescopic groove is larger than the diameter of the second support rod.

[0013] The second support rod is slidably disposed in the telescopic groove, and the second support rod is provided with a second positioning hole. The pin is used to position the first support rod and the second support rod.

[0014] In an optional embodiment, the two first support rods are rotatably connected to the two balance bars, respectively.

[0015] In an optional embodiment, a universal swivel joint is rotatably provided on the top of the support frame, and the universal swivel joint is fixed to the balance bar.

[0016] In an optional embodiment, the universal joint includes a ball joint and a ball head rod connected together;

[0017] The top of the support frame is provided with a rotating groove, the spherical universal joint is rotated and limited in the rotating groove, and the ball head rod is fixed to the balance bar.

[0018] In an optional embodiment, a limiting wall is provided at the top of the support frame to limit the balance bar so that the balance bar is parallel to the electrode.

[0019] In an alternative embodiment, the top of the support frame is hinged to one end of the balance bar.

[0020] The beneficial effects of the electrode detection device provided in this embodiment of the present invention include:

[0021] The electrode inspection device, through a rotatably connected balance bar and support frame, allows adjustment of the angle and direction of the measuring unit relative to the electrode by rotating the balance bar. This ensures the measuring unit is stably suspended directly above the electrode and its position relative to the electrode can be adjusted in real time. This eliminates errors caused by manual measurement with calipers. Furthermore, when changes to the coating size are needed, the electrode inspection device itself does not need to be moved; only the position of the measuring unit needs to be adjusted. This electrode inspection device is simple, convenient, highly adaptable, time-saving, and labor-saving. It eliminates errors caused by manual measurement with calipers, significantly improving battery yield and preventing poor battery packing due to coating size deviations, thus enhancing battery safety and electrical performance. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the electrode detection device provided in this embodiment;

[0024] Figure 2 This is a schematic diagram of the electrode detection device provided in this embodiment installed on the coating machine;

[0025] Figure 3 This is a schematic diagram of the structure for adjusting the height of the electrode detection device provided in this embodiment;

[0026] Figure 4 This is a partial sectional view of the support rod provided in this embodiment;

[0027] Figure 5 This is a partial cross-sectional view showing the rotational arrangement of the support frame and balance bar provided in this embodiment.

[0028] Icons: 100-Electrode testing device; 110-Support frame; 111-Support rod; 1111-First support rod; 1112-Telescopic groove; 1113-First positioning hole; 1114-Second support rod; 1115-Pin; 112-Connecting rod; 113-Base; 114-Rotating groove; 115-Limiting wall; 120-Balance bar; 130-Measuring part; 140-Universal rotary joint; 141-Spherical universal joint; 142-Ball head rod; 200-Electrode; 210-Coating layer. Detailed Implementation

[0029] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0030] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0031] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0033] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0034] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0035] The overall structure, working principle, and technical effects of the electrode detection device 100 provided by this utility model are described in detail below through embodiments and in conjunction with the accompanying drawings.

[0036] Please refer to Figure 1 The electrode detection device 100 provided by this utility model is applied to the coating process of the electrode 200 by the coating machine to measure the coating width of the electrode 200 during coating.

[0037] Please refer to Figures 1-3The electrode detection device 100 proposed in this embodiment is mounted on a coating machine. The coating machine is equipped with a coating mechanism for coating the electrode 200. The electrode detection device 100 includes a support frame 110, a balance bar 120, and a measuring part 130. The bottom of the support frame 110 is fixed to the coating machine, and the top of the support frame 110 is rotatably connected to one end of the balance bar 120. The other end of the balance bar 120 is connected to the measuring part 130, and the measuring part 130 is provided with a scale. The angle and direction of the measuring part 130 relative to the electrode 200 are adjustable.

[0038] It is understandable that by setting up the electrode detection device 100 on the coating machine, the measuring part 130 of the electrode detection device 100 can measure the coating width of the electrode 200 during coating. The electrode detection device 100 is connected to the support frame 110 by a rotatably rotating balance rod 120. The angle and direction of the measuring part 130 relative to the electrode 200 can be adjusted by rotating the balance rod 120, ensuring that the measuring part 130 is stably suspended directly above the electrode 200. This avoids errors caused by manual measurement with calipers. Furthermore, when the coating size needs to be changed, there is no need to move the electrode detection device 100 again; only the position of the measuring part 130 needs to be moved. This electrode detection device 100 is simple, convenient, highly adaptable, time-saving, and labor-saving. It eliminates errors caused by manual measurement with calipers, greatly improving the battery yield and preventing poor battery packing due to coating size deviations of the electrode 200, thus improving battery safety and electrical performance.

[0039] In this embodiment, please refer to Figures 2-3 The electrode detection device 100 is installed on the coating machine, which is equipped with a coating mechanism for coating the electrode 200.

[0040] The electrode detection device 100 is located at the output end of the coating mechanism.

[0041] Specifically, the coating machine also includes an unwinding mechanism and a rewinding mechanism. The unwinding mechanism is used to transport the electrode 200 to the rewinding mechanism after it has passed through the coating mechanism. In the processing of the electrode 200, the electrode 200 is first coated on one side. The foil is transported to the coating mechanism through the unwinding mechanism. The coating mechanism forms a coating layer 210 on one side of the electrode 200 with the coating slurry. Then, the electrode detection device 100 can measure the size of the coating layer 210.

[0042] In this embodiment, the electrode detection device 100 includes a support frame 110, a balance bar 120, and a measuring part 130. The bottom of the support frame 110 is fixed to the coating machine, the top of the support frame 110 is rotatably connected to one end of the balance bar 120, and the other end of the balance bar 120 is connected to the measuring part 130. The measuring part 130 is provided with a scale. The angle and direction of the measuring part 130 relative to the electrode 200 are adjustable.

[0043] In this embodiment, please refer to Figures 1-3 The measuring unit 130 can be equipped with a rectangular caliper.

[0044] In this embodiment, please refer to Figures 1-3 The electrode testing device 100 includes two balance bars 120, which are arranged in parallel. One end of each balance bar 120 is rotatably connected to the top of the support frame 110, and the other end is connected to the measuring unit 130.

[0045] In this embodiment, the support frame 110 includes two support rods 111 and a connecting rod 112. The bottom of the two support rods 111 is provided with a base 113, which is connected to the coating machine. The connecting rod 112 is connected between the two support rods 111, and the tops of the two support rods 111 are respectively rotatably connected to two balance bars 120.

[0046] The base 113 can be changed to any shape and size. It is only necessary to fix the electrode detection device 100 on the coating machine and keep the detection device stationary.

[0047] In this embodiment, the support rod 111 is telescopic. This configuration allows adjustment of the height of the support frame 110, thereby adjusting the distance between the measuring part 130 and the electrode 200.

[0048] Alternatively, please refer to Figure 4 The support rod 111 includes a first support rod 1111, a second support rod 1114, and a pin 1115. One end of the first support rod 1111 is provided with a telescopic groove 1112 and a plurality of first positioning holes 1113. The plurality of first positioning holes 1113 are spaced apart along the extension direction of the telescopic groove 1112. The telescopic groove 1112 is larger than the diameter of the second support rod 1114. The second support rod 1114 is slidably disposed in the telescopic groove 1112. The second support rod 1114 is provided with a second positioning hole. The pin 1115 is used to position the first support rod 1111 and the second support rod 1114.

[0049] The tops of the two second support rods 1114 are rotatably connected to the two balance bars 120 respectively.

[0050] Understandably, by pulling out the pin 1115, the height of the second support rod 1114 within the telescopic groove 1112 can be adjusted. After adjustment, the pin 1115 can be inserted into the second positioning hole and the first positioning hole 1113 to fix the first support rod 1111 and the second support rod 1114. This configuration allows the support rod 111 to be telescopic.

[0051] In this embodiment, please refer to Figures 1-3 The top of the support frame 110 is rotatably equipped with a universal joint 140, which is fixed to the balance bar 120; both first support frames 110 are equipped with universal joints 140 on their tops. This arrangement allows for a rotatable connection between the support frame 110 and the balance bar 120.

[0052] In this embodiment, please refer to Figure 5 The universal joint 140 includes a ball joint 141 and a ball head rod 142 connected to each other; the top of the second support rod 1114 of the support frame 110 is provided with a rotating groove 114, the ball joint 141 is rotated and limited in the rotating groove 114, and the ball head rod 142 is fixed to the balance bar 120.

[0053] Among them, the top of the second support rod 1114 of the support frame 110 is provided with a limiting wall 115, which is used to limit the balance rod 120 so that the balance rod 120 is parallel to the electrode 200.

[0054] It is understandable that by setting the limiting wall 115 to limit the position of the balance rod 120, the balance rod 120 can drive the measuring part 130 to be stably positioned directly above the electrode 200 and parallel to the electrode 200. The balance rod 120 and the measuring part 130 set in this way can maintain balance and not tilt, thus ensuring the stability of the measurement process.

[0055] Of course, in other embodiments, the top of the support frame 110 is hinged to one end of the balance bar 120, wherein the tops of both first support frames 110 are hinged to one end of the balance bar 120. This arrangement allows for a rotatable connection between the support frame 110 and the balance bar 120.

[0056] The working principle and process of the electrode detection device 100 provided in this embodiment of the present invention are as follows: Before the coating machine starts working, the base 113 is fixed to the coating machine, and the two first support rods 1111 and the second support rod 1114 are adjusted so that the support frame 110 is extended and retracted to the measurement height so that the measuring part 130 is located at the measurement height; then the position of the measuring part 130 is adjusted by rotating the measuring part 130 to adjust the angle and direction between the balance rod 120 and the support frame 110 so that the measuring part 130 is located directly above the coating layer 210 and parallel to the coating layer 210.

[0057] After coating begins, the measuring unit 130 is moved to align with the coating layer 210 area of ​​the electrode 200, and the width data of the coating layer 210 area is visually read to complete the measurement.

[0058] When the size of the coating layer 210 area needs to be changed, it is not necessary to move the base 113 again; only the position of the measuring unit 130 needs to be moved. The measuring unit 130 drives the balance bar 120 to rotate relative to the support frame 110.

[0059] In summary, the electrode detection device 100 provided in this embodiment of the present invention can measure the coating width of the electrode 200 during coating. The electrode detection device 100, through a rotatably connected balance rod 120 and support frame 110, allows adjustment of the angle and direction of the measuring unit 130 relative to the electrode 200 by rotating and adjusting the balance rod 120. This ensures that the measuring unit 130 is stably suspended directly above the electrode 200, and its position relative to the electrode 200 can be adjusted in real time. This avoids errors caused by manual measurement using calipers. Furthermore, when the coating size needs to be changed, there is no need to move the electrode detection device 100 again; only the position of the measuring unit 130 needs to be moved. This electrode detection device 100 is simple, convenient, highly adaptable, time-saving, and labor-saving. It eliminates errors caused by manual measurement using calipers, significantly improving battery yield and preventing poor battery packing due to coating size deviations of the electrode 200, thus improving battery safety and electrical performance.

[0060] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. An electrode testing device, characterized in that, It is mounted on a coating machine, which is equipped with a coating mechanism for coating the electrode sheet; The electrode testing device includes a support frame, a balance bar, and a measuring part. The bottom of the support frame is fixed to the coating machine, the top of the support frame is rotatably connected to one end of the balance bar, and the other end of the balance bar is connected to the measuring part. The measuring part is provided with a scale. The angle and direction of the measuring unit relative to the electrode are adjustable.

2. The electrode testing device according to claim 1, characterized in that, The electrode testing device includes two balance bars arranged in parallel. One end of each balance bar is rotatably connected to the top of the support frame, and the other end is connected to the measuring unit.

3. The electrode testing device according to claim 2, characterized in that, The support frame includes two support rods and a connecting rod. The bottom of the two support rods is provided with a base, which is connected to the coating machine. The connecting rod is connected between the two support rods, and the tops of the two support rods are rotatably connected to the two balance bars respectively.

4. The electrode testing device according to claim 3, characterized in that, The support rod is retractable.

5. The electrode testing device according to claim 4, characterized in that, The support rod includes a first support rod, a second support rod, and a pin. One end of the first support rod is provided with a telescopic groove and a plurality of first positioning holes. The plurality of first positioning holes are spaced apart along the extension direction of the telescopic groove. The telescopic groove is larger than the diameter of the second support rod. The second support rod is slidably disposed in the telescopic groove, and the second support rod is provided with a second positioning hole. The pin is used to position the first support rod and the second support rod.

6. The electrode testing device according to claim 5, characterized in that, The two first support rods are rotatably connected to the two balance bars respectively.

7. The electrode testing device according to claim 1, characterized in that, The top of the support frame is rotatably equipped with a universal swivel joint, which is fixed to the balance bar.

8. The electrode testing device according to claim 7, characterized in that, The universal joint includes a spherical universal joint and a ball joint rod connected together; The top of the support frame is provided with a rotating groove, the spherical universal joint is rotated and limited in the rotating groove, and the ball head rod is fixed to the balance bar.

9. The electrode testing device according to claim 8, characterized in that, The top of the support frame is provided with a limiting wall, which is used to limit the balance bar so that the balance bar is parallel to the electrode.

10. The electrode testing device according to claim 1, characterized in that, The top of the support frame is hinged to one end of the balance bar.

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