Measurement device, measurement method, and measurement program

Abstract

To improve measurement accuracy of physical characteristics of a coating boundary part of an electrode sheet.SOLUTION: The measurement device 10 causes the measurement unit of the detection device 20 that measures the coating amount of the electrode sheet S to execute an action for increasing the number of times of measurement at the coating boundary portion B between the coated portion and the uncoated portion of the electrode sheet S, acquires detection data at the coating boundary portion B measured by the detection device 20 that has executed the action, and calculates measurement data indicating the physical properties of the electrode sheet S based on the acquired detection data.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a measurement device, a measurement method, and a measurement program. [Background technology]

[0002] There is a coating process in which a coating is applied to a moving sheet (e.g., metal foil, film) to form a layer different from the substrate. For example, in the production process of batteries such as lithium-ion batteries, the positive and negative electrodes are manufactured on separate production lines in the electrode sheet manufacturing process. In this process, for example, for the positive electrode, a mixture slurry is applied thinly and uniformly to the surface of aluminum foil, which is then dried in the next process. After drying, the back side of the aluminum foil is similarly coated and further dried. Inspections from the coating process to the drying process may include measuring the coating amount, measuring the position and shape of the coating boundary (edge) between the coated and uncoated areas, and performing image diagnosis of the dried surface condition. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] International Publication No. 2014 / 174908 Summary of the Invention [Problem to be solved by the invention]

[0004] However, it is difficult to improve the accuracy of measuring the physical properties of the coating boundary of an electrode sheet. For example, when measuring coating weight using a radiation physical property sensor, the measurement is performed by transmission attenuation, which is highly stable and prevents pass line fluctuations, but the measurement spot diameter is large and the spatial resolution is only a few mm, which is insufficient.

[0005] The present invention has been made in view of the above, and can improve the accuracy of measuring the physical properties of the coating boundary of an electrode sheet. [Means for solving the problem]

[0006] A measuring device according to one embodiment of the present invention comprises an execution unit that causes a measurement unit of a detection device that measures the amount of coating on an electrode sheet to perform an action to increase the number of measurements at the coating boundary between the coated and uncoated portions of the electrode sheet, an acquisition unit that acquires detection data at the coating boundary measured by the detection device that performed the action, and a calculation unit that calculates measurement data indicating the physical properties of the electrode sheet based on the acquired detection data.

[0007] A measurement method according to one embodiment of the present invention comprises a computer executing a process in which a measurement unit of a detection device that measures the amount of coating on an electrode sheet executes an action to increase the number of measurements at the coating boundary between the coated and uncoated portions of the electrode sheet, acquires detection data at the coating boundary measured by the detection device that executed the action, and calculates measurement data indicating the physical properties of the electrode sheet based on the acquired detection data.

[0008] A measurement program according to one embodiment of the present invention causes a computer to execute an action on a measurement unit of a detection device that measures the amount of coating on an electrode sheet to increase the number of measurements at the coating boundary between the coated and uncoated areas of the electrode sheet, acquire detection data at the coating boundary measured by the detection device that executed the action, and calculate measurement data indicating the physical properties of the electrode sheet based on the acquired detection data. [Effects of the Invention]

[0009] According to the present invention, it is possible to improve the accuracy of measuring the physical properties of the coating boundary of the electrode sheet. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a diagram illustrating an example of the configuration and processing of a coating mass measurement system according to an embodiment; [Figure 2] 10A and 10B are diagrams for explaining a coating weight measurement process according to a reference technique. [Figure 3] 10A and 10B are diagrams for explaining a movement pattern of a measuring head according to a reference technique. [Figure 4] FIG. 10 is a diagram for explaining a coating pattern according to the reference technology. [Figure 5] FIG. 10 is a diagram for explaining the shape of a coating boundary portion according to the reference technology. [Figure 6] FIG. 2 is a block diagram showing an example of the configuration of each device of the coating mass measurement system according to the embodiment. [Figure 7] FIG. 4 is a diagram illustrating an example of a movement pattern storage unit of the measurement device according to the embodiment. [Figure 8] FIG. 3 is a diagram illustrating an example of a detection data storage unit of the measurement device according to the embodiment. [Figure 9] FIG. 4 is a diagram illustrating an example of a displacement data storage unit of the measurement device according to the embodiment. [Figure 10] FIG. 2 is a diagram illustrating an example of a measurement data storage unit of the measurement device according to the embodiment. [Figure 11] FIG. 1 is a diagram showing a specific example 1-1 of each process of the coating mass measurement system according to the embodiment. [Figure 12] 10A to 10C are diagrams showing specific examples 1-2 of the processes of the coating mass measurement system according to the embodiment. [Figure 13] FIG. 10 is a diagram showing a specific example 2 of each process of the coating mass measurement system according to the embodiment. [Figure 14] 3 is a flowchart showing an example of the overall flow of the coating mass measurement system according to the embodiment. [Figure 15] 10 is a flowchart showing an example of the flow of a movement pattern management process of the coating mass measurement system according to the embodiment. [Figure 16] 10 is a flowchart showing an example of the flow of an output data management process of the coating mass measurement system according to the embodiment. [Figure 17] 10 is a flowchart showing an example of the flow of a measurement data management process of the coating mass measurement system according to the embodiment. [Figure 18] FIG. 2 is a diagram illustrating an example of a hardware configuration according to an embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0011] A measurement device, a measurement method, and a measurement program according to an embodiment of the present invention will be described in detail below with reference to the drawings. Note that the present invention is not limited to the embodiment described below.

[0012] The following describes the configuration and processing of the coating weight measurement system 100 according to the embodiment, the configuration and processing of each device of the coating weight measurement system 100, the flow of each process of the coating weight measurement system 100, and the effects of the embodiment.

[0013] 1. Configuration and Processing of Coating Weight Measurement System 100 The configuration and processing of a coating weight measurement system 100 according to an embodiment will be described using Figures 1 to 5. Below, an example of the overall configuration of the coating weight measurement system 100, an example of processing by the coating weight measurement system 100, and the effects of the coating weight measurement system 100 will be described. Note that in the embodiment, a measuring device 10 that measures the coating weight of an electrode sheet S online will be described as an example, but the measurement target and field of use are not limited thereto.

[0014] (1-1. Example of the overall configuration of the coating weight measurement system 100) An example of the overall configuration of a coating weight measurement system 100 will be described using Figure 1. The coating weight measurement system 100 has a measuring device 10, a detector 20, and a laser displacement meter R. Figure 1 is a diagram showing an example of the configuration and processing of the coating weight measurement system 100 according to an embodiment. Here, the measuring device 10, the detector 20, and the laser displacement meter R are connected to each other via a predetermined communication network (not shown) so as to be able to communicate with each other via wired or wireless communication. Note that the predetermined communication network can be any of various communication networks such as the Internet or a dedicated line.

[0015] (1-1-1. Measuring device 10) The measuring device 10 is a device that measures the coating weight of an electrode sheet S, which is an object to be measured. For example, the measuring device 10 is installed in an operator room that manages a coating line for the electrode sheet S. The coating weight measurement system 100 shown in FIG. 1 may include multiple measuring devices 10. In the example of FIG. 1, the measuring device 10 is implemented by a desktop PC (Personal Computer), but it may also be implemented by a notebook PC, a smartphone, a server device, a cloud system, or the like.

[0016] (1-1-2.Detection equipment 20) The detection device 20 is a radiation physical property sensor that is arranged along the running direction of the electrode sheet S and measures the coating weight (e.g., coating basis weight, coating film thickness) of the electrode sheet S. For example, the detection device 20 is installed at the site of a coating line for the electrode sheet S. Note that the coating weight measurement system 100 shown in FIG. 1 only shows a measurement unit 21 corresponding to a measurement head as the detection device 20, but also includes a frame 22, which will be described later. Also, in the example of FIG. 1, the detection device 20 and the measurement device 10 are shown as separate configurations, but the detection device 20 and the measurement device 10 may also be integrated. Also, the coating weight measurement system 100 shown in FIG. 1 may include multiple detection devices 20.

[0017] (1-1-3. Laser displacement meter R) The laser displacement meter R is an optical physical property sensor, and is a device that measures the physical properties of the electrode sheet S. In the example of FIG. 1, the laser displacement meter R is installed in the measurement unit 21 of the detection device 20, but it may also be installed on a frame 22 and move in synchronization with the measurement unit 21 of the detection device 20. Furthermore, the coating weight measurement system 100 shown in FIG. 1 may include multiple laser displacement meters R.

[0018] (1-2. Processing example of coating weight measurement system 100) An example of processing by the coating weight measurement system 100 will be described using Figure 1. The following describes a movement execution process, a detection data acquisition process, a displacement data acquisition process, and a measurement data calculation process. Note that the following processes (1) to (4) can be executed in a different order. Also, some of the following processes (1) to (4) may be omitted.

[0019] (1-2-1. Movement execution process) First, the detector 20 moves along the electrode sheet S traveling at a constant speed (see FIG. 1(1)). For example, the detector 20 moves back and forth at a constant speed in a direction perpendicular to the traveling direction, and stops or decelerates at the coating boundary B of the electrode sheet S. At this time, the detector 20 moves along the electrode sheet S based on a movement pattern set by the measuring device 10.

[0020] (1-2-2. Detection data acquisition process) Second, the measuring device 10 acquires detection data of the electrode sheet S from the detecting device 20 (see FIG. 1(2)). For example, the measuring device 10 acquires a sensor voltage value detected as transmission intensity by the detecting device 20 irradiating the electrode sheet S with radiation at regular intervals.

[0021] (1-2-3. Displacement data acquisition process) Third, the measuring device 10 acquires displacement data of the electrode sheet S from the laser displacement meter R (see FIG. 1(3)). For example, the measuring device 10 acquires the distance and position of the electrode sheet S from the laser displacement meter R calculated from the reflected laser light, by having the laser displacement meter R irradiate the electrode sheet S with laser light at regular intervals.

[0022] (1-2-4. Measurement data calculation process) Fourth, the measuring device 10 calculates measurement data indicating the physical properties of the electrode sheet S (see FIG. 1(4)). For example, the measuring device 10 uses detection data at the coating boundary B of the electrode sheet S to calculate the coating amount of the electrode sheet S, the position of the coating boundary B, the shape of the coating boundary B, etc. At this time, the measuring device 10 can also perform super-resolution processing such as oversampling or interpolation processing on the measurement data. Furthermore, the measuring device 10 uses displacement data at the coating boundary B of the electrode sheet S to calculate the coating amount of the electrode sheet S, the position of the coating boundary B, the shape of the coating boundary B, etc.

[0023] (1-2-5. Other) 1(1) to 1(4), the measuring device 10 executes an action of stopping or slowing down the detector 20 at the coating boundary B in order to increase the number of measurements at the coating boundary B of the electrode sheet S, but the action for increasing the number of measurements at the coating boundary B is not particularly limited. For example, the measuring device 10 can also execute an action of increasing the number of irradiations per unit time of the measuring unit 21 or laser displacement meter R installed in the detector 20 at the coating boundary B in order to increase the number of measurements at the coating boundary B of the electrode sheet S.

[0024] Furthermore, the measuring device 10 can store a plurality of movement patterns relating to movement speed and stopping or deceleration, and can cause the detection device 20 to execute a movement pattern according to the measurement purpose or measurement accuracy of the electrode sheet S.

[0025] (1-3. Overview and Problems of Coating Weight Measurement System 100-P) An overview and problems of a coating mass measurement system 100-P according to the reference technology will be described with reference to FIGS.

[0026] (1-3-1. Overview of Coating Weight Measurement System 100-P) An overview of the coating weight measurement system 100-P according to the reference technology will be described below. The following describes the coating weight measurement process of the coating weight measurement system 100-P, the movement pattern of the measurement head 21-P of the coating weight measurement system 100-P, the coating pattern of the coating weight measurement system 100-P, and the shape of the coating boundary B of the coating weight measurement system 100-P.

[0027] (1-3-1-1. Coating weight measurement process of coating weight measurement system 100-P) The coating weight measurement process of the coating weight measurement system 100-P according to the reference technology will be described using FIG. 2. FIG. 2 is a diagram for explaining the coating weight measurement process according to the reference technology. As shown in FIG. 2, the detection device 20-P according to the coating weight measurement system 100-P is configured as a measurement head 21-P attached to an O-shaped frame 22, with an upper measurement head attached to the upper beam and a lower measurement head attached to the lower beam. These measurement heads synchronously scan (move) left and right within the O-shaped frame 22. The measurement head 21-P is equipped with a light source 21b-P and a detector 21a-P, which are radiation sources such as beta rays and X-rays, facing each other, and measures the radiation transmission attenuation of the electrode sheet S, which is the measurement object. The coating weight measurement system 100-P can create a calibration curve by measuring multiple samples with known basis weights in advance, and calculate the basis weight of the measurement object from the relationship between the attenuation and the calibration curve.

[0028] (1-3-1-2. Movement pattern of the measurement head 21-P of the coating amount measurement system 100-P) The movement pattern of the measuring head 21-P of the coating mass measurement system 100-P according to the reference technology will be described using Figure 3. Figure 3 is a diagram for explaining the movement pattern of the measuring head 21-P according to the reference technology. As shown in Figure 3, the measuring head 21-P of the detection device 20-P according to the coating mass measurement system 100-P measures by moving back and forth so as to cover a specified measurement width, for example, the sheet width from end to end of the traveling electrode sheet S (between B1 and B6). During this movement, the measuring head 21-P moves while repeatedly accelerating, moving at a constant speed, and decelerating.

[0029] (1-3-1-3. Coating pattern of coating amount measurement system 100-P) The coating pattern of the coating weight measurement system 100-P according to the reference technology will be described using FIG. 4. FIG. 4 is a diagram for explaining the coating pattern according to the reference technology. As shown in FIG. 4, there are various coating patterns for the coating weight measurement system 100-P according to the design of the battery package (e.g., cylindrical, square tube, pouch). For example, coating patterns include intermittent coating (see FIG. 4(1)), stripe coating (see FIG. 4(2)), and block coating (see FIG. 4(3)), which is a combination of intermittent coating and stripe coating.

[0030] Here, we will explain how the coating weight measurement system 100-P measures the position and shape of the coating boundary B between the coated and uncoated areas. For example, methods for measuring the position and shape of the coating boundary B include, first, a method that roughly measures the coating boundary B by measuring basis weight using radiation (radiation measurement), second, a method that measures the cross-sectional shape with high precision optically using a laser displacement meter R (optical measurement), third, a method that identifies the coating boundary B in a planar manner using a defect detection camera and image processing, and fourth, an electromagnetic method that uses capacitance measurement.

[0031] (1-3-1-4. Shape of coating boundary B of coating amount measurement system 100-P) The shape of the coating boundary B of the electrode sheet S in the coating weight measurement system 100-P according to the reference technology will be described using FIG. 5. FIG. 5 is a diagram for explaining the shape of the coating boundary B according to the reference technology. As shown in FIG. 5, the shape of the coating boundary B in the coating weight measurement system 100-P can be various. For example, the shape of the coating boundary B can be an "ideal shape" (see FIG. 5(1)), a "bulge" (see FIG. 5(2)), a "depression" (see FIG. 5(3)), a "flow" (see FIG. 5(4)), etc.

[0032] It should be noted that the shape of the coating boundary B should not have excessively steep vertical surfaces or sharp edges. To avoid edge chipping, cracks, and dents during subsequent processes (e.g., drying, pressing, tab processing, slitting, winding, and assembly), a shape with slightly inclined corners, as shown in Figure 5(1), is ideal. Furthermore, bulges, dents, and flows must be managed because they affect the performance and safety of the battery, including electrode quality, electrical uniformity, non-compliance with assembly dimensional specifications, and safety during use (risks during customer use).

[0033] (1-3-2. Problems with the Coating Weight Measurement System 100-P) Problems of the coating mass measurement system 100-P according to the reference technology will be explained below. Problems 1 to 4 of the coating mass measurement system 100-P will be explained below.

[0034] (1-3-2-1.Problem 1) First, when performing the above-described radiation measurement, the coating weight measurement system 100-P, unlike other methods, uses transmission attenuation to measure, which reduces pass line fluctuation and provides high stability. However, the measurement spot diameter is large, resulting in insufficient spatial resolution of several millimeters. Furthermore, the above-described radiation measurement, particularly the radiation transmission attenuation method, suffers from the problem that measurement of the coating boundary B is rough in terms of space and time when the measurement head 21-P passes through the coating at a constant speed. Furthermore, in the above-described radiation measurement, when the measurement head 21-P traverses at a constant speed, factors in the machine direction (MD), which is the direction of travel of the electrode sheet S, and the cross direction (CD), which is the width direction of the electrode sheet S, are mixed, making it difficult to separate the factors that disrupt uniform coating.

[0035] (1-3-2-2. Problem 2) Second, when the coating weight measurement system 100-P performs the optical length measurement described above, measurement methods such as laser triangulation have a high spatial resolution of several micrometers and are capable of measuring the fine shape of the coating boundary B. However, they suffer from the problem of being affected by pass line fluctuations and the reflectivity of the object being measured. Furthermore, the coating weight measurement system 100-P has a problem with the optical length measurement described above. While methods such as simultaneous, same-point measurements from the front and back to determine film thickness and differential calculations, and one-dimensional measurement methods (e.g., measurements using a line-shaped beam), are capable of precise measurements, the measurement values ​​vary widely, and measures such as time averaging are required for stable use. Furthermore, when the coating weight measurement system 100-P uses a laser displacement meter R in the optical length measurement described above, it suffers from the problem of it being difficult to instantly transmit the large amount of data from the laser displacement meter R to a calculation unit or calculation device.

[0036] (1-3-2-3.Problem 3) Third, when the above-mentioned image processing is performed, the coating weight measurement system 100-P can identify the coating boundary B with moderate accuracy because it uses a line camera to detect contrast differences in the object being measured, but there is a problem that if the pass line fluctuates, the imaging magnification changes and errors occur.Furthermore, because the above-mentioned image processing can only capture a two-dimensional image, if "flow" occurs as shown in Figure 5(4), the edge position will be distorted, and the detailed shape of the coating boundary B in the thickness direction cannot be identified.

[0037] (1-3-2-4.Problem 4) Fourth, when the coating weight measurement system 100-P uses the electromagnetic method, the probe size is somewhat large, making it difficult to precisely identify the coating boundary B. Furthermore, when the coating weight measurement system 100-P uses the electromagnetic method, it also has the problem that the composition of the mixture slurry can affect the measurement.

[0038] (1-4. Effects of Coating Weight Measurement System 100) After describing an overview of the coating weight measurement system 100 according to the embodiment, the effects of the coating weight measurement system 100 will be described.

[0039] (1-4-1. Overview of Coating Weight Measurement System 100) An overview of a coating weight measurement system 100 according to an embodiment will be described. The coating weight measurement system 100 performs the following processes. First, the detector 20 moves back and forth at a constant speed in a direction perpendicular to the traveling direction based on a movement pattern set by the measuring device 10, stopping or decelerating at a coating boundary B of the electrode sheet S. Second, the measuring device 10 irradiates the electrode sheet S with radiation at regular intervals and acquires detection data detected as transmitted intensity. Third, the measuring device 10 irradiates the electrode sheet S with laser light at regular intervals using a laser displacement meter R and acquires displacement data calculated from the reflected laser light. Fourth, the measuring device 10 uses at least one of the detection data and displacement data at the coating boundary B of the electrode sheet S to calculate measurement data indicating the physical properties of the electrode sheet S, such as the coating weight of the electrode sheet S, the position of the coating boundary B, and the shape of the coating boundary B.

[0040] (1-4-2. Effects of Coating Weight Measurement System 100) The effects of the coating weight measurement system 100 according to the embodiment will be described below. Effects 1 to 4 of the coating weight measurement system 100 will be described below. As will be described below, the coating weight measurement system 100 can improve the measurement accuracy of the physical properties of the coating boundary B of the electrode sheet.

[0041] (1-4-2-1. Effect 1) First, even when the coating weight measurement system 100 performs the above-described radiation measurement using the radiation transmission attenuation method, sufficient measurement time can be ensured by stopping or slowing down the measurement unit 21 of the detection device 20 corresponding to the measurement head, enabling measurements with higher resolution. Furthermore, depending on the application, the coating weight measurement system 100 can measure the coating boundary B with the desired accuracy even without being equipped with a laser displacement meter R. Furthermore, even when the coating weight measurement system 100 performs the above-described radiation measurement using an operating pattern in which the measurement unit 21 traverses at a constant speed, stopping the measurement unit 21 makes it possible to accurately capture coating unevenness caused in the MD, for example, due to roller eccentricity.

[0042] (1-4-2-2. Effect 2) Second, even when the coating weight measurement system 100 employs the optical length measurement described above and uses a laser displacement meter R, it ensures sufficient measurement time and eliminates pass line fluctuations, short-period meandering, subtle changes in the reflectivity of the measurement target, and the risk of detecting specific points through temporal averaging, thereby enabling stable measurement results. Furthermore, the coating weight measurement system 100 employs the optical length measurement described above and is capable of measuring multiple coating boundary portions B with a single laser displacement meter R, thereby achieving significant economic benefits. Furthermore, even when the coating weight measurement system 100 employs the optical length measurement described above and uses a laser displacement meter R, it is sufficient to measure only the coating boundary portion B that has been decelerated or stopped; data can be transmitted or calculated within the travel time to the next coating boundary portion B, enabling smooth continuous processing. Furthermore, even when the coating weight measurement system 100 employs the optical length measurement described above and uses a laser displacement meter R, it is possible to reduce the amount of data, thereby avoiding the need for a high-spec PC for the calculation unit or calculation device.

[0043] (1-4-2-3. Effect 3) Thirdly, the coating weight measurement system 100 can identify the coating boundary B with sufficient accuracy without using the defect detection camera and image processing described above.

[0044] (1-4-2-4. Effect 4) Fourth, even though the coating weight measurement system 100 is an electromagnetic system, it is possible to obtain stable and highly reliable results by averaging over time the effects of the composition of the composite slurry and measurement system noise, etc.

[0045] 2. Configuration and Processing of Each Device in Coating Weight Measurement System 100 The configuration and processing of each device included in the coating weight measurement system 100 shown in Fig. 1 will be described using Fig. 6 to Fig. 10. Below, an example configuration of the entire coating weight measurement system 100 according to the embodiment, an example configuration and processing of the measuring device 10, an example configuration and processing of the detection device 20, and an example configuration and processing of the laser displacement meter R will be described.

[0046] (2-1. Example of the overall configuration of the coating weight measurement system 100) An example of the overall configuration of the coating weight measurement system 100 shown in FIG. 1 will be described using FIG. 6. FIG. 6 is a block diagram showing an example of the configuration of each device of the coating weight measurement system 100 according to the embodiment. As shown in FIG. 6, the coating weight measurement system 100 is composed of a measuring device 10, a detecting device 20, and a laser displacement meter R. The measuring device 10, the detecting device 20, and the laser displacement meter R are communicatively connected via a communication network N realized by the Internet, a dedicated line, or the like. Note that the coating weight measurement system 100 may be configured by integrating two or more of the measuring device 10, the detecting device 20, and the laser displacement meter R.

[0047] (2-2. Configuration Example and Processing Example of Measuring Device 10) An example of the configuration and processing of the measurement device 10 will be described with reference to Fig. 6. The measurement device 10 has an input unit 11, an output unit 12, a communication unit 13, a storage unit 14, and a control unit 15.

[0048] (2-2-1. Input section 11) The input unit 11 controls input of various information to the measurement device 10. For example, the input unit 11 is realized by a mouse, a keyboard, etc., and accepts input of various information to the measurement device 10.

[0049] (2-2-2. Output section 12) The output unit 12 controls the output of various information from the measurement device 10. For example, the output unit 12 is realized by a display or the like, and displays various information stored in the measurement device 10.

[0050] (2-2-3. Communications Department 13) The communication unit 13 controls data communication with other devices. For example, the communication unit 13 performs data communication with each communication device via a router, etc. The communication unit 13 can also perform data communication with a terminal (not shown).

[0051] (2-2-4. Storage section 14) The memory unit 14 stores various information referenced by the control unit 15 when it operates and various information acquired when the control unit 15 operates. The memory unit 14 includes a movement pattern memory unit 14a, a detection data memory unit 14b, a displacement data memory unit 14c, and a measurement data memory unit 14d. Here, the memory unit 14 can be realized by, for example, a semiconductor memory element such as a random access memory (RAM) or a flash memory, or a storage device such as a hard disk or an optical disk. In the example of FIG. 6, the memory unit 14 is installed inside the measuring device 10, but it may also be installed outside the measuring device 10, or multiple memory units may be installed.

[0052] (2-2-4-1. Movement pattern storage unit 14a) The movement pattern storage unit 14a stores movement patterns. For example, the movement pattern storage unit 14a stores movement patterns input by an operator O who is the manager of the coating line. The movement pattern storage unit 14a also stores a plurality of movement patterns as settings related to the movement speed of the measurement unit 21 of the detection device 20 and the stopping or deceleration of the measurement unit 21. Here, an example of data stored in the movement pattern storage unit 14a will be described with reference to FIG. 7. FIG. 7 is a diagram showing an example of the movement pattern storage unit 14a of the measurement device 10 according to the embodiment. In the example of FIG. 7, the movement pattern storage unit 14a has items such as "coating line" and "movement pattern."

[0053] "Coating line" indicates identification information for identifying the production process of the object to be measured, such as the identification number or identification symbol of the coating line of the electrode sheet S. "Movement pattern" indicates settings related to the movement speed of the measurement unit 21 of the detection device 20 corresponding to the measurement head and the stopping or deceleration of the measurement unit 21, such as setting information related to the movement speed of the measurement unit 21 in the coated and uncoated areas, and the stopping time and movement time at the coating boundary B.

[0054] That is, Figure 7 shows an example in which data with movement patterns such as {coating line: "L001", movement pattern: "M001"}, {coating line: "L002", movement pattern: "M002"}, {coating line: "L003", movement pattern: "M003"}, etc. are stored in the movement pattern memory unit 14a.

[0055] (2-2-4-2. Detection data storage unit 14b) The detection data storage unit 14b stores the detection data. For example, the detection data storage unit 14b stores the detection data acquired by an acquisition unit 15b of the control unit 15, which will be described later. Here, an example of data stored in the detection data storage unit 14b will be described with reference to FIG. 8. FIG. 8 is a diagram showing an example of the detection data storage unit 14b of the measuring device 10 according to the embodiment. In the example of FIG. 8, the detection data storage unit 14b has items such as "coating line," "time," and "detection value."

[0056] "Coating line" indicates identification information for identifying the production process of the object to be measured, such as the identification number or symbol of the coating line of the electrode sheet S. "Time" indicates the time when the detection data was output, and is expressed, for example, in year, month, day, hour, minute, and second. "Detection value" indicates the output value of the detection data, and is expressed, for example, in volts V, which is the sensor voltage value.

[0057] That is, Figure 4 shows an example in which, for a coating line identified by "L001", the detection data stored in the detection data memory unit 14b is {time: "T001", detected value: "V001"}, {time: "T002", detected value: "V002"}, {time: "T003", detected value: "V003"}, {time: "T004", detected value: "V004"}, {time: "T005", detected value: "V005"}, etc.

[0058] (2-2-4-3. Displacement data storage unit 14c) The displacement data storage unit 14c stores displacement data. For example, the displacement data storage unit 14c stores displacement data acquired by an acquisition unit 15b of the control unit 15, which will be described later. Here, an example of data stored in the displacement data storage unit 14c will be described with reference to FIG. 9. FIG. 9 is a diagram showing an example of the displacement data storage unit 14c of the measuring device 10 according to the embodiment. In the example of FIG. 9, the displacement data storage unit 14c has items such as "coating line," "time," and "displacement value."

[0059] "Coating line" indicates identification information for identifying the production process of the object to be measured, such as the identification number or symbol of the coating line of the electrode sheet S. "Time" indicates the time when the displacement data was output, and is expressed, for example, in years, months, days, hours, minutes, and seconds. "Displacement value" indicates the output value of the displacement data, and is expressed, for example, in meters (m), which is distance or position.

[0060] That is, FIG. 9 shows an example in which, for a coating line identified by "L001," data such as {time: "T001", displacement value: "D001"}, {time: "T002", displacement value: "D002"}, {time: "T003", displacement value: "D003"}, {time: "T004", displacement value: "D004"}, {time: "T005", displacement value: "D005"}, etc. are stored in the displacement data storage unit 14c.

[0061] (2-2-4-4. Measurement data storage unit 14d) The measurement data storage unit 14d stores measurement data. For example, the measurement data storage unit 14d stores measurement data calculated by a calculation unit 15c of the control unit 15, which will be described later. Here, an example of data stored in the measurement data storage unit 14d will be described with reference to FIG. 10. FIG. 10 is a diagram showing an example of the measurement data storage unit 14d of the measuring device 10 according to the embodiment. In the example of FIG. 10, the measurement data storage unit 14d has items such as "coating line," "time," "coating amount," "position," and "shape."

[0062] "Coating line" indicates identification information for identifying the production process of the object being measured, such as the identification number or symbol of the coating line of the electrode sheet S. "Time" indicates the time when the measurement data was output, and is expressed, for example, in years, months, days, hours, minutes, and seconds. "Coating amount" indicates a physical property of the measurement data relating to the amount of coating applied to the object being measured, such as grams per square meter (g / m), which is the difference in basis weight between before and after coating the electrode sheet S. 2 "Position" indicates a physical characteristic related to the absolute position of the coating boundary B of the object being measured among the measurement data, and is expressed, for example, in meters m, which is the absolute distance from a predetermined reference edge of the electrode sheet S. "Shape" indicates a physical characteristic related to the shape of the coating boundary B of the object being measured among the measurement data, and is expressed, for example, as the shape of the electrode sheet S, by words such as "ideal shape," "bulge," "dent," or "flow," as well as an identification number, identification symbol, or numerical value.

[0063] That is, Figure 10 shows an example in which, for a coating line identified by "L001," the measurement data stored in the measurement data storage unit 14d is {time: "T001," coating amount: "W001," position: "P001," shape: "F001"}, {time: "T002," coating amount: "W002," position: "P002," shape: "F002"}, {time: "T003," coating amount: "W003," position: "P003," shape: "F003"}, {time: "T004," coating amount: "W004," position: "P004," shape: "F004"}, {time: "T005," coating amount: "W005," position: "P005," shape: "F005"}, etc.

[0064] (2-2-5. Control unit 15) The control unit 15 is responsible for overall control of the measurement device 10. The control unit 15 has an execution unit 15a, an acquisition unit 15b, and a calculation unit 15c. Here, the control unit 15 can be realized by, for example, an electronic circuit such as a CPU (Central Processing Unit) or an MPU (Micro Processing Unit), or an integrated circuit such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array).

[0065] (2-2-5-1. Execution Unit 15a) The execution unit 15a executes various processes. Furthermore, the execution unit 15a causes the various processes to be executed. Note that the execution unit 15a may refer to various pieces of information stored in the storage unit 14. The measurement control process will be described below.

[0066] (Measurement control processing) The execution unit 15a executes a measurement control process. For example, the execution unit 15a causes the measurement unit 21 of the detection device 20, which measures the coating weight of the electrode sheet S, to execute an action to increase the number of measurements at a coating boundary B between a coated portion and an uncoated portion of the electrode sheet S. In this case, the execution unit 15a causes the measurement unit 21, which measures the coating weight, to move at a constant speed along the electrode sheet S at predetermined time intervals and stop the measurement unit 21 at the coating boundary B for a predetermined time. In addition, the execution unit 15a causes the measurement unit 21, which measures the coating weight, to move at a constant speed along the electrode sheet S at predetermined time intervals and slow down the movement speed of the measurement unit 21 at the coating boundary B. In addition, the execution unit 15a causes the measurement unit 21 to execute a movement pattern from among a plurality of movement patterns that corresponds to the measurement purpose or measurement accuracy of the electrode sheet S.

[0067] A specific example of the measurement control process will be described. First, the execution unit 15a refers to {coating line: "L001", movement pattern: "M001"} as the movement pattern stored in the movement pattern storage unit 14a. Second, the execution unit 15a specifies the movement pattern for one round trip in the width direction of the electrode sheet S as follows: {coating boundary 1: "movement time 2 seconds", coated unit 1: "movement time 2 seconds", coated boundary 2-3: "movement time 2 seconds", coated unit 2: "movement time 2 seconds", coated boundary 4: "movement time 2 seconds", coated unit 2: "movement time 2 seconds", coated boundary 2-3: "movement time 2 seconds", coated unit 1: "movement time 2 seconds", coated boundary 1: "movement time 2 seconds"}. Third, the execution unit 15a transmits the specified movement pattern as a control signal to the detection device 20, and moves the measurement unit 21 according to the movement pattern.

[0068] (2-2-5-2. Acquisition part 15b) The acquiring unit 15b acquires various types of information. The acquiring unit 15b may store the acquired various types of information in the storage unit 14. The detection data acquisition process and the displacement data acquisition process will be described below.

[0069] (Detection data acquisition process) The acquisition unit 15b executes a detection data acquisition process, for example, the acquisition unit 15b acquires the detection data of the coating boundary B measured by the detection device 20 that executed the action.

[0070] A specific example of the detection data acquisition process will be described. First, the acquisition unit 15b acquires {time: "T001", detected value: "V001"}, {time: "T002", detected value: "V002"}, {time: "T003", detected value: "V003"}, {time: "T004", detected value: "V004"}, {time: "T005", detected value: "V005"}, ... as the detection data output by the measurement unit 21 of the detection device 20 for the coating line identified by "L001", and stores the data in the detection data storage unit 14b. Second, the acquisition unit 15b refers to {coating line: "L001", movement pattern: "M001"} as the movement pattern stored in the movement pattern storage unit 14a. Third, using the detection data and the movement pattern, the execution unit 15a identifies the following as the detection data at the coating boundary portion B: {time: "T001", detection value: "V001"}, {time: "T003", detection value: "V003"}, {time: "T004", detection value: "V004"}, ...

[0071] (Displacement data acquisition processing) The acquiring unit 15b executes a displacement data acquiring process. For example, the acquiring unit 15b acquires displacement data at the coating boundary B measured by a laser displacement meter R installed in the measuring unit 21 of the detecting device 20.

[0072] A specific example of the displacement data acquisition process will be described. First, for the coating line identified by "L001," the acquisition unit 15b acquires the following displacement data output by the measurement unit 21 of the detection device 20: {time: "T001," displacement value: "D001"}, {time: "T002," displacement value: "D002"}, {time: "T003," displacement value: "D003"}, {time: "T004," displacement value: "D004"}, {time: "T005," displacement value: "D005"}, ..., and stores the data in the displacement data storage unit 14c. Second, the acquisition unit 15b references {coating line: "L001," movement pattern: "M001"} as a movement pattern stored in the movement pattern storage unit 14a. Third, the acquisition unit 15b uses the displacement data and the movement pattern to identify the following as displacement data at the coating boundary portion B: {time: "T001", displacement value: "D001"}, {time: "T003", displacement value: "D003"}, {time: "T004", displacement value: "D004"}, ...

[0073] (2-2-5-3. Calculation part 15c) The calculation unit 15c acquires various pieces of information. The calculation unit 15c may store the calculated various pieces of information in the storage unit 14. The measurement data calculation process and the super-resolution process will be described below.

[0074] (Measurement data calculation processing) The calculation unit 15c executes a measurement data calculation process. For example, the calculation unit 15c calculates measurement data indicating the physical characteristics of the electrode sheet S based on the acquired detection data. Furthermore, the calculation unit 15c calculates measurement data indicating the physical characteristics of the electrode sheet S based on the acquired displacement data. At this time, the calculation unit 15c calculates at least one of the coating amount of the electrode sheet S, the position of the coating boundary B, and the shape of the coating boundary B as the measurement data.

[0075] A specific example of the measurement data calculation process using the detection data will be described. First, for the coating line identified by "L001", the calculation unit 15c refers to the following detection data stored in the detection data storage unit 14b: {time: "T001", detection value: "V001"}, {time: "T002", detection value: "V002"}, {time: "T003", detection value: "V003"}, {time: "T004", detection value: "V004"}, {time: "T005", detection value: "V005"}, ... Second, the calculation unit 15c calculates, for the coating line identified by "L001", the following measurement data indicating the physical properties of the electrode sheet S: {time: "T001", coating amount: "W001", position: "P001", shape: "F001"}, {time: "T002", coating amount: "W002", position: "P002", shape: "F002"}, {time: The calculation unit 15c calculates {coating line: "L001", movement pattern: "M001"}, {time: "T002", coating amount: "W002", position: "P002", shape: "F002"}, {time: "T003", coating amount: "W003", position: "P003", shape: "F003"}, {time: "T004", coating amount: "W004", position: "P004", shape: "F004"}, {time: "T005", coating amount: "W005", position: "P005", shape: "F005"}, ..., and stores them in the measurement data storage unit 14d. Third, the calculation unit 15c refers to {coating line: "L001", movement pattern: "M001"} as the movement pattern stored in the movement pattern storage unit 14a. Fourth, using the measurement data and movement pattern, the calculation unit 15c identifies the following measurement data at the coating boundary B: {time: "T001", coating amount: "W001", position: "P001", shape: "F001"}, {time: "T003", coating amount: "W003", position: "P003", shape: "F003"}, {time: "T004", coating amount: "W004", position: "P004", shape: "F004"}, ...

[0076] A specific example of the measurement data calculation process using displacement data will be described. First, for the coating line identified by "L001," the calculation unit 15c references the following displacement data stored in the displacement data storage unit 14c: {time: "T001," displacement value: "D001"}, {time: "T002," displacement value: "D002"}, {time: "T003," displacement value: "D003"}, {time: "T004," displacement value: "D004"}, {time: "T005," displacement value: "D005"}, ... Second, the calculation unit 15c calculates, for the coating line identified by "L001", the following measurement data indicating the physical properties of the electrode sheet S: {time: "T001", coating amount: "W001D", position: "P001D", shape: "F001D"}, {time: "T002", coating amount: "W002D", position: "P002D", shape: "F002D"}, {time: " The calculation unit 15c calculates {coating line: "L001", movement pattern: "M001"}, {time: "T003", coating amount: "W003D", position: "P003D", shape: "F003D"}, {time: "T004", coating amount: "W004D", position: "P004D", shape: "F004D"}, {time: "T005", coating amount: "W005D", position: "P005D", shape: "F005D"}, ..., and stores them in the measurement data storage unit 14d. Third, the calculation unit 15c refers to {coating line: "L001", movement pattern: "M001"} as the movement pattern stored in the movement pattern storage unit 14a. Fourth, using the measurement data and movement pattern, the calculation unit 15c identifies the following measurement data at the coating boundary B: {time: "T001", coating amount: "W001D", position: "P001D", shape: "F001D"}, {time: "T003", coating amount: "W003D", position: "P003D", shape: "F003D"}, {time: "T004", coating amount: "W004D", position: "P004D", shape: "F004D"}, ...

[0077] At this time, the calculation unit 15c can use at least one of the detection data and the displacement data to calculate the coating film thickness from the measured difference (step) at the coating boundary B between the coated and uncoated areas. The calculation unit 15c can also extract the widthwise position using algorithms such as differentiation and emphasis filters that quantify the step boundary. The calculation unit 15c can also calculate the absolute position of the coating boundary B between the coated and uncoated areas as the distance from the reference point of the traveling sheet using an encoder signal from the conveyance mechanism that moves the measurement unit 21.

[0078] (Super resolution processing) Calculation unit 15c executes super-resolution processing. For example, calculation unit 15c executes super-resolution processing on the measurement data according to the moving speed of measurement unit 21 of detection device 20. At this time, calculation unit 15c executes oversampling or interpolation processing on the measurement data as the super-resolution processing.

[0079] A specific example of super-resolution processing using detection data will be described. First, for the coating line identified by "L001", the calculation unit 15c refers to the following measurement data stored in the measurement data memory unit 14d: {Time: "T001", Coat amount: "W001", Position: "P001", Shape: "F001"}, {Time: "T002", Coat amount: "W002", Position: "P002", Shape: "F002"}, {Time: "T003", Coat amount: "W003", Position: "P003", Shape: "F003"}, {Time: "T004", Coat amount: "W004", Position: "P004", Shape: "F004"}, {Time: "T005", Coat amount: "W005", Position: "P005", Shape: "F005"}, ... Second, the calculation unit 15c refers to {coating line: "L001", movement pattern: "M001"} as a movement pattern stored in the movement pattern storage unit 14a, and specifies the movement speed. Third, the calculation unit 15c performs oversampling or storage processing using the measurement data and the movement speed, thereby calculating {time: "T001", coating amount: "W001SR", position: "P001SR", shape: "F001SR"}, {time: "T002", coating amount: "W002SR", position: "P002SR", shape: "F002SR"}, {time: "T00 3", coating amount: "W003SR", position: "P003SR", shape: "F003SR"}, {time: "T004", coating amount: "W004SR", position: "P004SR", shape: "F004SR"}, {time: "T005", coating amount: "W005SR", position: "P005SR", shape: "F005SR"}, ... is output, and the measurement data memory unit 14d is updated.

[0080] (2-3. Configuration example and processing example of the detection device 20) An example of the configuration and processing of the detection device 20 will be described with reference to FIG. 6. The detection device 20 is installed on a coating line where a sheet-like object to be measured is coated, and detects the transmission intensity by irradiating the sheet-like object to be measured with β rays, X-rays, or infrared rays. For example, the detection device 20 is installed on a coating line where an electrode sheet S is coated. The detection device 20 is composed of a measurement unit 21 and a frame 22.

[0081] (2-3-1. Measuring section 21) The measurement unit 21 is responsible for measuring various types of information of the detection device 20. For example, the measurement unit 21 is realized by upper and lower measurement heads, and measures the transmission intensity of irradiated light rays, etc. The measurement unit 21 is also composed of a detector 21a and a light source 21b.

[0082] (2-3-1-1. Detector 21a) The detector 21a detects the transmission intensity of light rays and the like irradiated from the light source 21b. For example, the detector 21a is a radiation physical property sensor that detects the transmission intensity of β rays and X-rays as radiation irradiated from the light source 21b. The detector 21a also detects the transmission intensity of infrared rays irradiated from the light source 21b.

[0083] (2-3-1-2.Light source 21b) The light source 21b is a predetermined source that generates light rays or the like that can be detected by the detector 21a. For example, the light source 21b is a radiation source that generates β rays or X-rays. The light source 21b is also a light source that generates light of a predetermined wavelength, for example, infrared rays. The light source 21b may also be a heat source that generates heat at a predetermined temperature.

[0084] (2-3-2. Frame 22) The frame 22 is a metal housing portion, and is provided with the measuring unit 21. The frame 22 may also be provided with an encoder that transmits an encoder signal.

[0085] (2-4. Example of the configuration and processing of the laser displacement meter R) An example of the configuration and processing of the laser displacement meter R will be described using FIG. 6. The laser displacement meter R is an optical physical property sensor, for example, a one-dimensional displacement meter having a laser light source. The laser displacement meter R is installed in the measurement unit 21 of the detection device 20, irradiates the electrode sheet S with laser light at regular intervals, and outputs the distance and position of the electrode sheet S from the laser displacement meter R calculated from the reflected laser light as displacement data. The laser displacement meter R may also be installed on the frame 22 and move in synchronization with the measurement unit 21 of the detection device 20.

[0086] The laser displacement meter R is an example of an optical physical property sensor, and is not particularly limited. For example, an optical length measurement sensor, an electromagnetic length measurement sensor, a contact probe length measurement sensor, or the like may be used instead of the laser displacement meter R, or one or more of the above sensors may be used in combination with the laser displacement meter R. Furthermore, displacement data output by the above multiple sensors may be sent to the measuring device 10 to calculate measurement data.

[0087] 3. Specific Examples of Each Process of Coating Weight Measurement System 100 11 to 13, specific examples of each process of the coating weight measurement system 100 according to the embodiment will be described. Below, an overview and premise of the coating weight measurement system 100 will be described, followed by specific example 1, specific example 2, and the effects of the coating weight measurement system 100 as a whole.

[0088] (3-1. Overview of Coating Weight Measurement System 100) An overview of the coating weight measurement system 100 will be described. The coating weight measurement system 100 has a measurement unit 21 of a detection device 20 that moves back and forth in a direction (the width direction of the foil) perpendicular to the running direction of the traveling electrode sheet S, and measures the coating weight while moving in the width direction of the electrode sheet S. In particular, the coating weight measurement system 100 measures the coating weight while stopping or decelerating the measurement unit 21 for a certain period of time at the position of the coating boundary B between the coated and uncoated areas, and after the predetermined measurement period is over, it moves to the adjacent coating boundary B and repeats the measurement while stopping or decelerating in the same manner. Furthermore, the coating weight measurement system 100 enables non-contact film thickness measurement by arbitrarily retaining and selecting an operating pattern, i.e., the movement pattern of the measurement unit 21.

[0089] Furthermore, the coating amount measurement system 100 is configured so that the measurement unit 21 measures while moving while maintaining a generally constant gap between it and the traveling electrode sheet S, and the measurement unit 21 is equipped with both a radiation physical property sensor and an optical physical property sensor, and the movement speed of the measurement unit 21 is changed at the coating boundary B between the coated and uncoated areas to measure using the optical physical property sensor, and after the measurement for a predetermined period of time has been completed, the measurement unit 21 moves to the coating boundary B between the adjacent coated and uncoated areas and the measurement is repeated in the same manner, thereby measuring the physical properties of the electrode sheet S.

[0090] (3-2. Prerequisites for Coating Weight Measurement System 100) The premise of the coating weight measurement system 100 will be explained. In the online measurement of the coating weight measurement system 100-P according to the aforementioned reference technology, multiple measurement conditions are stored and a measurement selected according to the application is performed. For example, the measurement conditions of the coating weight measurement system 100-P include the movement distance (measurement range) of the measuring head 21-P, the movement speed of the measuring head 21-P, the measurement spatial resolution, the selection of a smoothing filter, the setting of the smoothing filter strength, the measurement data collection method, and the measurement data collection frequency. In the coating weight measurement system 100-P, the measuring head 21-P moves back and forth over a specified movement distance at a specified speed, and therefore, due to the balance with the traveling electrode sheet S, a zigzag measurement line is displayed (see Figure 2).

[0091] In the online measurement described above, the elements of the running direction (MD) of the electrode sheet S and the width direction (CD) movement of the measuring head 21-P are combined and difficult to separate, so the measuring head 21-P is stopped at an arbitrary position and only the MD direction is measured. The above measurement is an unsteady measurement that is attempted very rarely by the operator O of the coating line with the intention of investigating a specific location.

[0092] Furthermore, when measuring the coating boundary B using radiation transmission attenuation, the measurement diameter (spot diameter) is large, so even if the measurement is carried out carefully, the limit is sub-mm level. Normally, the coating boundary B is measured by firmly fixing it to a robust structure that is not susceptible to vibration or thermal deformation. In this case, any movement of the measurement system will result in an erroneous measurement, so it is not installed on a traverse-type basis weight measuring device.

[0093] (3-3. Specific Example 1 of Each Process of Coating Weight Measurement System 100) 11 and 12, a specific example 1 of each process of the coating weight measurement system 100 will be described. FIG. 11 is a diagram showing a specific example 1-1 of each process of the coating weight measurement system 100 according to the embodiment. FIG. 12 is a diagram showing a specific example 1-2 of each process of the coating weight measurement system 100 according to the embodiment. Below, an application example using three-striped coating as an example will be described as specific example 1.

[0094] The examples in Figures 11 and 12 show a coating line and coating pattern with three stripes. If laser displacement meters R were installed here, a total of four would be required (B1, between B2 and B3, between B4 and B5, and B6). The number of coating stripes generally ranges from 1 to 10, with the number varying depending on the battery manufacturer. While measurements are typically taken by firmly securing a laser displacement meter R at each coating boundary B, installing nearly 10 expensive laser displacement meters in a row would significantly increase costs. Therefore, in the coating weight measurement system 100, the laser displacement meter R is installed in the measurement unit 21 of the detection device 20, which corresponds to the measurement head. In other words, by installing both a radiation physical property sensor and a laser displacement meter R and performing instantaneous measurements at the coating position as the coating edge passes, only one laser displacement meter R is required.

[0095] However, stable, high-precision measurement of the coating edge shape while the measurement unit 21 is moving may pick up variations in the pass line of the electrode sheet S, short-period meandering of the coating area, and very few singular points at the coating boundary B, and there is also a demand for measurement results that are averaged over time to a certain extent. Therefore, the measurement unit 21 is equipped with both a radiation physical property sensor and a laser displacement meter R, and stops or slows down when measuring the coating boundary B, measuring for a longer time than the time it takes for the measurement to pass by momentarily.

[0096] 11 shows a movement pattern of measurement unit 21 in which it stops at coating boundary B. That is, in the example of FIG. 11, it stops and measures at the running sheet edges (B1, B6) and coating boundary B (between B2 and B3, between B4 and B5), and after a certain period of measurement has been completed, it moves to the next coating boundary B, repeating this pattern until it reaches the opposite running sheet edge, turns back, and measures in the same way. In this case, measurement unit 21 may or may not measure while moving from coating boundary B to the next coating boundary B.

[0097] 12 shows a movement pattern of measurement unit 21 in which the speed is decelerated at coating boundary B. That is, in the example of FIG. 12, measurement is performed while decelerating at the running sheet edges (B1, B6) and coating boundary B (between B2 and B3, between B4 and B5), and after a certain period of measurement is completed, the measurement unit moves to the next coating boundary B, repeating this pattern until it reaches the opposite running sheet edge and turns back to measure in the same way. In this case, measurement unit 21 may or may not measure while moving from coating boundary B to the next coating boundary B.

[0098] (3-4. Specific Example 2 of Each Process of Coating Weight Measurement System 100) Specific example 2 of each process of the coating mass measurement system 100 will be described using Fig. 13 and mathematical expressions. Fig. 13 is a diagram showing specific example 2 of each process of the coating mass measurement system 100 according to the embodiment. As specific example 2, super-resolution processing in which oversampling and interpolation processing are performed will be described below.

[0099] In the example of Figure 13, super-resolution processing is performed by oversampling, where measurement data at 1 mm intervals using X-rays with a diameter of 3 mm is interpolated into data at 0.5 mm intervals to find the optimal coefficients (coefficients a to g) in the following equation (1): In the following equation (1), "x" represents the actual measurement value, "y" represents the correction value, and "n" represents the position.

[0100]

number

[0101] The vertical axis in Fig. 13 represents the count value, which is the measurement data. The horizontal axis in Fig. 13 represents the head position [mm], which is the position of the measurement unit 21. The example in Fig. 13 shows that as a result of edge response correction (2x oversampling), super-resolution processing was performed to reduce the rise time from 10% to 90% from 1.7 mm to 1 mm.

[0102] (3-5. Overall effect of the coating weight measurement system 100) As described above, the coating amount measurement system 100 can measure the physical properties of the electrode sheet S online with high accuracy, such as the coating film thickness on the traveling electrode sheet S, the position of the coating boundary B, and the shape of the coating boundary B, by eliminating instabilities such as the runout accuracy of the transport rollers, flapping of the sheet at non-supported parts of the roll-to-roll transfer, the surface condition of the coating film (e.g., color, tilt, roughness), short-period meandering, and the risk of picking up some singular points.

[0103] 4. Flow of each process in the coating weight measurement system 100 14 to 18, the processing flow of the coating weight measurement system 100 according to the embodiment will be described. Below, the processing flow of the entire coating weight measurement system 100 will be described, and then each processing, that is, the movement pattern management processing, the output data management processing, and the measurement data management processing, will be described.

[0104] (4-1. Overall processing of the coating weight measurement system 100) The overall processing flow of the coating weight measurement system 100 according to the embodiment will be described using Figure 14. Figure 14 is a flowchart showing an example of the overall processing flow of the coating weight measurement system 100 according to the embodiment. Note that the processing of steps S101 to S103 below can also be performed in a different order. Furthermore, some of the processing of steps S101 to S103 below may be omitted.

[0105] (4-1-1. Movement pattern management process) First, the coating weight measurement system 100 executes a movement pattern management process (step S101). For example, the coating weight measurement system 100 executes the processes of steps S201 to S204 described below to move the measurement unit 21 of the detection device 20 along the traveling electrode sheet S.

[0106] (4-1-2. Output data management process) Second, the coating weight measurement system 100 executes an output data management process (step S102). For example, the coating weight measurement system 100 executes the processes of steps S301 to S306 described below to manage the detection data acquired from the detection device 20 and the displacement data acquired from the laser displacement meter R as output data.

[0107] (4-1-3. Measurement data management processing) Third, the coating weight measurement system 100 executes a measurement data management process (step S103). For example, the coating weight measurement system 100 executes the processes of steps S401 to S406, which will be described later, to manage the measurement data calculated from the detection data and the displacement data.

[0108] (4-2. Detection result management process) The flow of the movement pattern management process of the coating mass measurement system 100 according to the embodiment will be described using Figure 15. Figure 15 is a flowchart showing an example of the flow of the movement pattern management process of the coating mass measurement system 100 according to the embodiment. Note that the processes of steps S201 to S204 below can also be executed in a different order. Furthermore, some of the processes of steps S201 to S204 below may be omitted.

[0109] (4-2-1. Movement pattern input processing) First, an operator O of the coating line executes a movement pattern input process (step S201). For example, the operator O inputs settings related to the movement speed and stopping or deceleration of the measurement unit 21 as a movement pattern to the measurement device 10. At this time, the measurement device 10 stores the input movement pattern in the movement pattern storage unit 14a.

[0110] (4-2-2. Movement pattern setting process) Second, the measuring device 10 executes a movement pattern setting process (step S202). For example, the measuring device 10 selects a movement pattern according to the measurement purpose and measurement accuracy of the coating line, and transmits data related to the selected movement pattern to the detection device 20.

[0111] (4-2-3. Seat running process) Third, the operator O executes a sheet running process (step S203). For example, the operator O runs the electrode sheet S at a constant speed by operating the transport rollers of the coating line.

[0112] (4-2-4. Measurement head movement processing) Fourth, the detection device 20 executes a measurement head movement process (step S204). For example, the detection device 20 moves the measurement unit 21 corresponding to the measurement head based on the data relating to the movement pattern transmitted by the measurement device 10.

[0113] (4-3. Output data management processing) The flow of the output data management process of the coating weight measurement system 100 according to the embodiment will be described with reference to Fig. 16. Fig. 16 is a flowchart showing an example of the flow of the output data management process of the coating weight measurement system 100 according to the embodiment. Note that the processes of steps S301 to S306 below can also be executed in a different order. Furthermore, some of the processes of steps S301 to S306 below may be omitted.

[0114] (4-3-1. Detected value output processing) First, the detecting device 20 executes a detection value output process (step S301). For example, the detecting device 20 outputs the transmitted radiation intensity detected by the detector 21a as a detection value.

[0115] (4-3-2. Detection value acquisition process) Second, the measurement device 10 executes a detection value acquisition process (step S302). For example, the measurement device 10 acquires the detection value output by the detection device 20.

[0116] (4-3-3. Detected data storage process) Third, the measurement device 10 executes a detection data storage process (step S303). For example, the measurement device 10 stores the acquired detection value as detection data in the detection data storage unit 14b.

[0117] (4-3-4. Quantity output processing) Fourth, the laser displacement meter R executes a displacement value output process (step S304). For example, the laser displacement meter R outputs the distance or position of the electrode sheet S calculated by the laser displacement meter R as a displacement value.

[0118] (4-3-5. Quantile value acquisition process) Fifth, the measuring device 10 executes a displacement value acquisition process (step S305). For example, the measuring device 10 acquires the displacement value output by the laser displacement meter R.

[0119] (4-3-6. Displacement data storage processing) Sixth, the measuring device 10 executes a displacement data storage process (step S306). For example, the measuring device 10 stores the acquired displacement value as displacement data in the displacement data storage unit 14c.

[0120] (4-4. Measurement data management processing) The flow of the measurement data management process of the coating weight measurement system 100 according to the embodiment will be described with reference to Fig. 17. Fig. 17 is a flowchart showing an example of the flow of the measurement data management process of the coating weight measurement system 100 according to the embodiment. Note that the processes of steps S401 to S406 below can also be executed in a different order. Furthermore, some of the processes of steps S401 to S406 below may be omitted.

[0121] (4-4-1. Detection data reference process) First, the measurement device 10 executes a detection data reference process (step S401). For example, the measurement device 10 refers to the detection data stored in the detection data storage unit 14b.

[0122] (4-4-2. Displacement data reference processing) Second, the measuring device 10 executes a displacement data reference process (step S402). For example, the measuring device 10 refers to the displacement data stored in the displacement data storage unit 14c.

[0123] (4-4-3. Coating amount calculation process) Third, the measuring device 10 executes a coating weight calculation process (step S403). For example, the measuring device 10 uses at least one of the detection data and the displacement data to calculate the coating weight, which is the coating basis weight and coating film thickness of the electrode sheet S, as measurement data.

[0124] (4-4-4. Position calculation process) Fourth, the measuring device 10 executes a position calculation process (step S404). For example, the measuring device 10 calculates the position of the coating boundary B of the electrode sheet S as measurement data using at least one of the detection data and the displacement data.

[0125] (4-4-5. Shape calculation process) Fifth, the measuring device 10 executes a shape calculation process (step S405). For example, the measuring device 10 calculates the shape of the coating boundary B of the electrode sheet S as measurement data using at least one of the detection data and the displacement data.

[0126] (4-4-6. Measurement data storage process) Sixth, the measurement device 10 executes a measurement data storage process (step S406). For example, the measurement device 10 stores the calculated coating amount, position, and shape as measurement data in the measurement data storage unit 14d.

[0127] 5. Effects of the embodiment Effects of the embodiment will be described. Effects 1 to 8 corresponding to the processing according to the embodiment will be described below.

[0128] (5-1. Effect 1) First, in the process according to the embodiment described above, the measuring device 10 causes the measuring unit 21 of the detecting device 20, which measures the coating amount of the electrode sheet S, to take an action to increase the number of measurements at the coating boundary B between the coated and uncoated areas of the electrode sheet S, acquires detection data at the coating boundary B measured by the detecting device 20 that has taken the action, and calculates measurement data indicating the physical properties of the electrode sheet S based on the acquired detection data. Therefore, in this process, the measurement accuracy of the physical properties of the coating boundary B of the electrode sheet S can be improved.

[0129] (5-2. Effect 2) Second, in the process according to the embodiment described above, the measuring device 10 takes the action of moving the measuring unit 21, which measures the coating weight at predetermined time intervals, along the electrode sheet S at a constant speed and stopping the measuring unit 21 for a predetermined time at the coating boundary B. Therefore, in this process, by stopping the measuring unit 21 for a predetermined time and increasing the number of measurements at the coating boundary B, it is possible to improve the measurement accuracy of the physical properties of the coating boundary B of the electrode sheet S.

[0130] (5-3. Effect 3) Third, in the process according to the above-described embodiment, the action is to move the measuring unit 21, which measures the coating weight at predetermined time intervals, along the electrode sheet S at a constant speed, and to slow down the moving speed of the measuring unit 21 at the coating boundary B. Therefore, in this process, by slowing down the moving speed of the measuring unit 21 and increasing the number of measurements at the coating boundary B, it is possible to improve the measurement accuracy of the physical properties of the coating boundary B of the electrode sheet S.

[0131] (5-4. Effect 4) Fourth, in the process according to the embodiment described above, a plurality of movement patterns are stored as settings related to the movement speed of measurement unit 21 and stopping or deceleration of measurement unit 21, and measurement unit 21 is caused to execute a movement pattern from the plurality of movement patterns that corresponds to the measurement purpose or measurement accuracy of electrode sheet S. Therefore, in this process, by making it possible to switch between movement patterns that correspond to the measurement purpose or measurement accuracy of electrode sheet S, it is possible to improve the measurement accuracy of the physical properties of coating boundary B of electrode sheet S.

[0132] (5-5. Effect 5) Fifth, in the process according to the embodiment described above, displacement data at the coating boundary B measured by the laser displacement meter R installed in the measurement unit 21 is acquired, and measurement data indicating the physical properties of the electrode sheet S is calculated based on the acquired displacement data. Therefore, in this process, by acquiring displacement data from the laser displacement meter R installed in the measurement unit 21, it is possible to improve the measurement accuracy of the physical properties of the coating boundary B of the electrode sheet S.

[0133] (5-6. Effect 6) Sixth, in the processing according to the above-described embodiment, super-resolution processing is performed on the measurement data according to the moving speed of the measurement unit 21. Therefore, in this processing, by performing super-resolution processing that increases the spatial resolution, it is possible to improve the measurement accuracy of the physical properties of the coating boundary B of the electrode sheet S.

[0134] (5-7. Effect 7) Seventh, in the process according to the above-described embodiment, oversampling or interpolation is performed on the measurement data as super-resolution processing. Therefore, in this process, by performing oversampling or interpolation as super-resolution processing to increase the spatial resolution, it is possible to improve the measurement accuracy of the physical properties of the coating boundary B of the electrode sheet S.

[0135] (5-8. Effect 8) Eighth, in the process according to the above-described embodiment, the measurement data calculated is at least one of the coating weight of the electrode sheet S, the position of the coating boundary B, and the shape of the coating boundary B. Therefore, in this process, the measurement accuracy of the coating weight of the electrode sheet S, the position of the coating boundary B, and the shape of the coating boundary B can be improved as physical properties of the coating boundary B of the electrode sheet S.

[0136] 6. Application Examples of the Embodiments Application Examples of the Embodiments will be Described below. Application Examples 1 to 5 of the embodiment will be described below.

[0137] (6-1. Application Example 1) As an application example 1 of the embodiment, it is possible to separate the detection device 20 and the laser displacement meter R. In the embodiment, an example has been described in which the laser displacement meter R is mounted co-located in the measurement unit 21 of the detection device 20 corresponding to the measurement head, but in application example 1, if the process (step) in which the coating amount is to be measured is different from the process in which the coating boundary portion B is to be measured, it is possible to prepare multiple O-shaped frames 22 and mount the laser displacement meter R individually, and select the optimum operation pattern for each.

[0138] (6-2. Application Example 2) As an application example 2 of the embodiment, it is possible to expand the observation area to the coating boundary B. In the embodiment, an example has been described in which the position at which the measurement unit 21 is stopped or decelerated is the coating boundary B, but application example 2 can also be applied to areas other than the coating boundary B. For example, application example 2 can also compare the coating film thickness measured by the radiation detection device 20 with the coating film thickness measured by the laser displacement meter R. As described above, application example 2 makes it possible to concentrate observation on the position of interest of the operator O.

[0139] (6-3. Application example 3) As an application example 3 of the embodiment, it is possible to separate the operation patterns. In this embodiment, multiple frames 22 are synchronized to measure the same point on the traveling electrode sheet S, and the coating weight can be calculated from measurements such as basis weight between the multiple frames 22. In this embodiment, the basis weight of the uncoated electrode sheet S is measured in frame 22-1, and the combined value of the electrode sheet S and coating weight is measured in frame 22-2, which is installed after the coating process. Only the coating weight is calculated by subtracting the measurement value of frame 22-1 from the measurement value of frame 22-2. In this embodiment, complex synchronization control is performed between the multiple frames 22 in the above process. Therefore, incorporating even more complex movement patterns, such as stopping and deceleration, may adversely affect synchronization accuracy. In application example 3, for example, it is possible to separate the measurement modes and selectively perform a measurement mode for the coating boundary B, separate from the synchronous measurement mode for basis weight.

[0140] (6-4. Application Example 4) As an application example 4 of the embodiment, it is possible to measure the absolute position of the coating boundary B. In application example 4, when determining the position of the coating boundary B as an absolute value from the reference edge of the running electrode sheet S, the encoder information of the detection device 20 and the information of the coating boundary B from the laser displacement meter R are merged to determine the absolute position of the coating boundary B from the reference edge of the running electrode sheet S. In application example 4, the encoder may be the encoder of the measuring head drive motor, but if even higher accuracy is required, a high-precision linear scale may be attached externally.

[0141] (6-5. Application Example 5) As an application example 5 of the embodiment, the present invention can be applied to a pattern coated or coated sheet-like object in which at least one coating edge exists on a metal foil or film as a measurement object. Application example 5 can also be applied to an electrode sheet S that is intermittently coated or block coated, in addition to the stripe coated electrode sheet S described in the embodiment.

[0142] [7. System] The information including the processing procedures, control procedures, specific names, various data and parameters shown in the above documents and drawings can be changed arbitrarily unless otherwise specified.

[0143] Furthermore, the components of each device shown in the figure are conceptual functional components and do not necessarily have to be physically configured as shown in the figure. In other words, the specific form of distribution or integration of each device is not limited to that shown in the figure. In other words, all or part of the devices can be functionally or physically distributed or integrated in any unit depending on various loads, usage conditions, etc.

[0144] Furthermore, all or any part of the processing functions performed by each device may be realized by a CPU and a program analyzed and executed by the CPU, or may be realized as hardware using wired logic.

[0145] [8. Hardware] Next, an example of the hardware configuration of the measurement device 10 will be described. Note that other devices may also have a similar hardware configuration. FIG. 18 is a diagram showing an example of the hardware configuration according to an embodiment. As shown in FIG. 18, the measurement device 10 has a communication device 10a, an HDD (Hard Disk Drive) 10b, a memory 10c, and a processor 10d. Furthermore, the components shown in FIG. 18 are connected to each other via a bus or the like.

[0146] The communication device 10a is a network interface card or the like, and communicates with other servers. The HDD 10b stores programs and databases that operate the functions shown in FIG.

[0147] The processor 10d reads out a program that executes the same processes as the respective processing units shown in FIG. 6 from the HDD 10b or the like and loads it into the memory 10c, thereby operating a process that executes the respective functions described in FIG. 6 or the like. For example, this process executes the same functions as the respective processing units of the measurement device 10. Specifically, the processor 10d reads out a program that has the same functions as the execution unit 15a, the acquisition unit 15b, the calculation unit 15c, or the like from the HDD 10b or the like. Then, the processor 10d executes a process that executes the same processes as the execution unit 15a, the acquisition unit 15b, the calculation unit 15c, or the like.

[0148] In this way, the measuring device 10 operates as a device that executes various processing methods by reading and executing a program. The measuring device 10 can also realize functions similar to those of the above-described embodiments by reading the program from a recording medium using a media reader and executing the read program. Note that the programs according to the embodiments are not limited to being executed by the measuring device 10. For example, the present invention can also be applied in the same way to cases where another computer or server executes the program, or where these execute the program in cooperation with each other.

[0149] This program can be distributed via a network such as the Internet. In addition, this program can be recorded on a computer-readable recording medium such as a hard disk, a flexible disk (FD), a CD-ROM, a magneto-optical disk (MO), or a digital versatile disk (DVD), and can be executed by being read from the recording medium by a computer.

[0150] [9. Other] Some examples of combinations of the disclosed technical features are set out below.

[0151] (1) A measuring device comprising: an execution unit that causes a measurement unit of a detection device that measures the coating amount of an electrode sheet to execute an action to increase the number of measurements at the coating boundary between the coated and uncoated portions of the electrode sheet; an acquisition unit that acquires detection data at the coating boundary measured by the detection device that executed the action; and a calculation unit that calculates measurement data indicating the physical properties of the electrode sheet based on the acquired detection data.

[0152] (2) The measuring device described in (1), wherein the execution unit, as the action, moves the measuring unit, which measures the coating amount at predetermined time intervals, along the electrode sheet at a constant speed and stops the measuring unit at the coating boundary for a predetermined time.

[0153] (3) The measuring device according to (1) or (2), wherein the execution unit, as the action, moves the measuring unit, which measures the coating amount at predetermined time intervals, along the electrode sheet at a constant speed and decelerates the moving speed of the measuring unit at the coating boundary.

[0154] (4) A measuring device described in any one of (1) to (3), further comprising a memory unit that stores a plurality of movement patterns as settings regarding the movement speed of the measuring unit and the stopping or deceleration of the measuring unit, and the execution unit causes the measuring unit to execute a movement pattern from the plurality of movement patterns that corresponds to the measurement purpose or measurement accuracy of the electrode sheet.

[0155] (5) A measuring device described in any one of (1) to (4), wherein the acquisition unit acquires displacement data at the coating boundary measured by a laser displacement meter installed in the measurement unit, and the calculation unit calculates the measurement data indicating the physical properties of the electrode sheet based on the acquired displacement data.

[0156] (6) The measurement device according to any one of (1) to (3), wherein the calculation unit performs super-resolution processing on the measurement data according to the moving speed of the measurement unit.

[0157] (7) The measurement device according to (6), wherein the calculation unit performs oversampling or interpolation processing on the measurement data as the super-resolution processing.

[0158] (8) The measuring device according to any one of (1) to (7), wherein the calculation unit calculates at least one of the coating amount, the position of the coating boundary, and the shape of the coating boundary as the measurement data.

[0159] (9) A measurement method in which a computer executes a process in which a measurement unit of a detection device that measures the amount of coating on an electrode sheet executes an action to increase the number of measurements at the coating boundary between the coated and uncoated parts of the electrode sheet, acquires detection data at the coating boundary measured by the detection device that executed the action, and calculates measurement data indicating the physical properties of the electrode sheet based on the acquired detection data.

[0160] (10) A measurement program that causes a computer to execute a process that causes a measurement unit of a detection device that measures the amount of coating on an electrode sheet to perform an action to increase the number of measurements at the coating boundary between the coated and uncoated areas of the electrode sheet, acquires detection data at the coating boundary measured by the detection device that executed the action, and calculates measurement data that indicates the physical properties of the electrode sheet based on the acquired detection data. [Explanation of symbols]

[0161] 10. Measuring equipment 10a Communication equipment 10b HDD 10c memory 10d processor 11 Input section 12 Output section 13 Communications Department 14 Storage section 14a Movement pattern memory unit 14b Detection data storage unit 14c Displacement data storage section 14d Measurement data storage section 15 Control Unit 15a Executive Department 15b Acquisition part 15c Calculation part 20 Detection equipment 21 Measuring part 21a detector 21b Light source 22 frames 100 Coating Weight Measurement System B. Coating boundary N communication network O Operator R Laser displacement meter S electrode sheet

Claims

1. an execution unit that causes a measurement unit of a detection device that measures the coating amount of an electrode sheet to execute an action to increase the number of measurements at a coating boundary between a coated portion and an uncoated portion of the electrode sheet; an acquisition unit that acquires detection data of the coating boundary portion measured by the detection device that executed the action; a calculation unit that calculates measurement data indicating physical properties of the electrode sheet based on the acquired detection data; A measuring device comprising:

2. The execution unit: the action is to move the measuring unit, which measures the coating weight at predetermined time intervals, along the electrode sheet at a constant speed and stop the measuring unit at the coating boundary for a predetermined time. The measuring device according to claim 1 .

3. The execution unit: the action is to move the measuring unit, which measures the coating amount, along the electrode sheet at a constant speed at predetermined time intervals, and to decelerate the moving speed of the measuring unit at the coating boundary portion. The measuring device according to claim 1 .

4. a storage unit that stores a plurality of movement patterns as settings related to the movement speed of the measurement unit and the stopping or deceleration of the measurement unit; The execution unit: causing the measurement unit to execute a movement pattern corresponding to a measurement purpose or measurement accuracy of the electrode sheet from the plurality of movement patterns; The measuring device according to claim 1 .

5. The acquisition unit acquiring displacement data at the coating boundary portion measured by a laser displacement meter installed in the measurement unit; The calculation unit calculating the measurement data indicating the physical characteristics of the electrode sheet based on the acquired displacement data; The measuring device according to claim 1 .

6. The calculation unit performing super-resolution processing on the measurement data in accordance with the moving speed of the measurement unit; The measuring device according to claim 1 .

7. The calculation unit performing oversampling or interpolation processing on the measurement data as the super-resolution processing; The measuring device according to claim 6.

8. The calculation unit As the measurement data, at least one of the coating amount, the position of the coating boundary, and the shape of the coating boundary is calculated.

8. The measuring device according to claim 1.

9. The computer causing a measuring unit of a detection device that measures the coating amount of the electrode sheet to perform an action to increase the number of measurements at a coating boundary between a coated portion and an uncoated portion of the electrode sheet; acquiring detection data of the coating boundary portion measured by the detection device that performed the action; calculating measurement data indicating physical properties of the electrode sheet based on the acquired detection data; The measurement method by which the process is performed.

10. On the computer, causing a measuring unit of a detection device that measures the coating amount of the electrode sheet to perform an action to increase the number of measurements at a coating boundary between a coated portion and an uncoated portion of the electrode sheet; acquiring detection data of the coating boundary portion measured by the detection device that performed the action; calculating measurement data indicating physical properties of the electrode sheet based on the acquired detection data; A measurement program that executes the process.

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