KR20230047263A - A surface inspection apparatus and method - Google Patents

Abstract

The present invention relates to a surface inspection apparatus and a method thereof. To this end, according to one embodiment of the present invention, the surface inspection apparatus comprises: a storage part storing reference data on a separation plate having a plurality of planes with different heights; a sensing part scanning the separation plate; and a control part configured to acquire scan data generated by scanning the separation plate at least once through the sensing part and compare the reference data and the scan data in a preset inspection area of the separation plate to inspect the separation plate. The set inspection area corresponds to at least one plane with the same height among the plurality of planes. Therefore, the present invention can automatically determine damage caused by at least one among a crack, nick, scratch, bending, bur, and foreign substance on the separation plate.

Description

Surface inspection device and method {A SURFACE INSPECTION APPARATUS AND METHOD}

The present invention relates to a surface inspection apparatus and method.

In general, secondary batteries can be recharged and have high capacities. Such secondary batteries include nickel cadmium, nickel hydrogen, and lithium ion batteries. Lithium-ion batteries are attracting attention as a next-generation power source due to their excellent characteristics such as long lifespan and high capacity.

In addition, there is a hydrogen fuel cell that generates hydrogen and oxygen by electrolyzing water and uses a reverse reaction of electrolysis. Unlike general chemical cells, such a hydrogen fuel cell is an eco-friendly energy source that can continuously produce electricity as long as fuel and air are supplied.

An electric vehicle may use such a lithium ion battery or may use hydrogen. A hydrogen electric vehicle using hydrogen is a vehicle that uses a fuel cell that produces electricity by directly reacting sorghum and oxygen in the air. It is an environmentally friendly car.

And, the fuel cell of such an electric vehicle includes a separator, and each of the inlet and outlet manifolds through which three types of fluids such as air and hydrogen, which are reactive gases, and coolant can enter and exit are formed at both ends of the separator. Further, the separator is formed in a concavo-convex structure in which a land plate closely supported by the gas diffusion layer of the membrane electrode assembly and a channel plate constituting a reaction passage through which a reaction gas flows and a cooling water passage are repeated.

Conventional prior art (eg, Korean Patent Registration No. 10-2061747) relates to a PCB (printed circuit board) busbar used in a lithium battery pack, which is formed of a copper foil substrate and has a plurality of terminal holes for fastening with a lithium battery cell. And it discloses the contents of the PCB bus bar that can be integrally fastened with the external frame through the male screw.

However, the prior art only discloses contents for determining the connection state between battery cells by measuring the resistance of a contact member in contact with the battery cells, and discloses contents for inspecting an error in a separator disposed on a battery cell. Not doing it.

Accordingly, there is a need for inspection of separators used for various purposes throughout the industry.

Korean Registered Patent Publication No. 10-2061747

Accordingly, the present invention provides a surface inspection device and method for inspecting a separator plate.

In addition, the present invention provides a surface inspection apparatus and method for inspecting the separation plate by comparing scan data obtained by scanning the separation plate with reference data of the separation plate.

In addition, the present invention extracts the intaglio, embossment, and the boundary between the intaglio and the embossment from the scan data, and the extracted intaglio, embossment, and the boundary between the intaglio and embossment and the intaglio and embossment in the reference data corresponding to the separator. , and to provide a surface inspection device and method for inspecting the separator by mapping the boundary lines of the intaglio and the embossed respectively.

The objects of the present invention are not limited to the above-mentioned objects, and other objects and advantages of the present invention not mentioned above can be understood by the following description and will be more clearly understood by the embodiments of the present invention. It will also be readily apparent that the objects and advantages of the present invention may be realized by means of the instrumentalities and combinations indicated in the claims.

In order to achieve this object, a surface inspection apparatus according to an embodiment of the present invention includes a storage unit for storing reference data for a separator having a plurality of planes having different heights, a detection unit for scanning the separator, and the separation unit. A control unit set to obtain scan data generated by scanning the plate at least once through the sensing unit and compare the reference data and the scan data in a preset inspection area of the separator to inspect the separator, The set inspection area is characterized in that it corresponds to at least one plane having the same height among the plurality of planes.

In addition, the surface inspection method according to the present invention includes a process of scanning a separation plate, a process of acquiring scan data generated by scanning the separation plate at least once, and scanning reference data and the scan data in a predetermined inspection area of the separation plate. and inspecting the separator by comparing data, wherein the reference data is data for a separator having a plurality of planes having different heights, and the set inspection area is at least one of the plurality of planes having the same height. It is characterized by corresponding to one plane.

In the present invention, at least one of cracks, dents, scratches, bends, burs, and foreign substances in the separation plate is inspected by comparing scan data generated by scanning the separation plate at least once with reference data. Damage caused by can be automatically determined.

In addition, the present invention generates one third scan data by combining first scan data generated by scanning the first area of the separation plate and second scan data generated by scanning the second area of the separation plate. By doing so, it is possible to perform a three-dimensional inspection of the separator.

In addition, the present invention can perform a more accurate and detailed inspection of the separation plate by dividing and scanning the separation plate.

In addition, the present invention extracts intaglio, embossment, and the boundary between intaglio and embossment from scan data, and intaglio, embossment, Inspection can be performed on all areas of the separator by mapping the boundary lines of the intaglio and embossing respectively.

In addition, the present invention can perform a three-dimensional inspection of the separation plate by inspecting the separation plate through a three dimensional (3D) profile sensor.

In addition to the effects described above, specific effects of the present invention will be described together while explaining specific details for carrying out the present invention.

1 is a block diagram of a surface inspection apparatus according to an embodiment of the present invention.
2 is a perspective view of a separating plate according to an embodiment of the present invention.
3A is a front view of a separating plate according to an embodiment of the present invention.
3B is a front view of a separator according to another embodiment of the present invention.
4 is a flowchart illustrating a method of inspecting a separator according to an embodiment of the present invention.
5 is an exemplary view of a separating plate according to an embodiment of the present invention.
6 is an exemplary view showing reference data for the separator of FIG. 5 .
7 is an exemplary view of a separation plate inspected by a surface inspection apparatus according to an embodiment of the present invention.
8 is an exemplary diagram illustrating scan data generated by scanning the separation plate of FIG. 7 .

The above objects, features and advantages will be described later in detail with reference to the accompanying drawings, and accordingly, those skilled in the art to which the present invention belongs will be able to easily implement the technical spirit of the present invention. In describing the present invention, if it is determined that the detailed description of the known technology related to the present invention may unnecessarily obscure the subject matter of the present invention, the detailed description will be omitted. Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to indicate the same or similar components.

Although first, second, etc. are used to describe various components, these components are not limited by these terms, of course. These terms are only used to distinguish one component from another component, and unless otherwise stated, the first component may be the second component, of course.

Hereinafter, the arrangement of an arbitrary element on the "upper (or lower)" or "upper (or lower)" of a component means that an arbitrary element is placed in contact with the upper (or lower) surface of the component. In addition, it may mean that other components may be interposed between the component and any component disposed on (or under) the component.

In addition, when a component is described as "connected", "coupled" or "connected" to another component, the components may be directly connected or connected to each other, but other components may be "interposed" between each component. ", or each component may be "connected", "coupled" or "connected" through other components.

Throughout the specification, unless otherwise stated, each element may be singular or plural.

Singular expressions used herein include plural expressions unless the context clearly dictates otherwise. In this application, terms such as "consisting of" or "comprising" should not be construed as necessarily including all of the various components or steps described in the specification, and some of the components or some of the steps It should be construed that it may not be included, or may further include additional components or steps.

Throughout the specification, when "A and/or B" is used, this means A, B or A and B unless otherwise specified, and when used as "C to D", this means unless otherwise specified Unless otherwise specified, means greater than or equal to C and less than or equal to D

Hereinafter, a surface inspection apparatus and method according to some embodiments of the present invention will be described.

1 is a block diagram of a surface inspection apparatus according to an embodiment of the present invention.

Referring to FIG. 1 , a surface inspection apparatus 100 according to an embodiment of the present invention includes a storage unit 110, a detection unit 120, a display unit 130, a communication unit 140, and a control unit 150. can do.

The configuration of the surface inspection device 100 shown in FIG. 1 is according to an embodiment, and the components of the surface inspection device 100 are not limited to the embodiment shown in FIG. 1, and some components as needed. may be added, changed or deleted.

According to one embodiment, the storage unit 110 may include a volatile memory or a non-volatile memory. For example, the storage unit 110 may store information, data, programs, etc. necessary for the operation of the surface inspection apparatus 100. Accordingly, the storage unit 110 may perform a control operation described later with reference to the stored information.

According to an embodiment, the storage unit 110 may be, for example, a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory ( For example, it may include at least one type of storage medium among SD or XD memory, etc.), RAM, and ROM (EEPROM, etc.).

According to an embodiment, the storage unit 110 includes various data (eg, software, programs, control logic, control signals, and related data obtained or used by at least one component of the surface inspection apparatus 100). Commands can be saved.

According to an embodiment, the storage unit 110 may store reference data for at least one separator plate. The storage unit 110 may store reference data for various types of separators, such as size, thickness, and shape. The storage unit 110 may store reference data for a separator having a plurality of planes having different heights and formed in an intaglio and/or embossed pattern.

And, the reference data is data used to inspect cracks, scratches, bends, burs, and foreign substances on the surface of the separator. And, the reference data may be an image or include values (eg, height, depth, length, etc.)

Such reference data may be received through the communication unit 140 or stored in the storage unit 110 through an input/output interface (eg, a USB terminal, etc.).

According to an embodiment, the detection unit 120 may scan at least one separator plate introduced into the surface inspection device 100 . The sensing unit 120 may include at least one sensor capable of scanning at least a portion of the separating plate. Alternatively, the detector 120 may include a camera that acquires an image of at least a portion of the separator.

For example, the sensing unit 120 may include a three dimensions (3D) profile sensor. The 3D profile sensor may measure the shape of the separator. For example, the 3D profile sensor may extract the cross-sectional shape by capturing the shape of the surface of the separating plate.

According to an embodiment, the detecting unit 120 may be disposed at an appropriate location of the surface inspection device 100 to recognize patterns formed by the intaglio and embossing of the separation plate. For example, the detecting unit 120 may be disposed to face downward in the surface inspection device 100 and scan the upper surface of the separator placed on the upper surface of the separator transfer device (not shown).

In this way, the separation plate transfer device (not shown) is drawn into the surface inspection device 100 in a state where the separation plate is disposed on the upper surface. In addition, the detection unit 120 disposed in the surface inspection device 100 (for example, disposed in a direction toward the separation plate) to scan the separation plate is the separator on the separation plate transfer device (not shown). The plate can be scanned to generate scan data.

According to an embodiment, the display unit 130 may display a scan cater generated by scanning the separation plate by the sensing unit 120 under the control of the controller 150 . Alternatively, the display unit 130 may display a comparison result between the generated scan data and the reference data.

For example, when cracks, scratches, bends, burs, and foreign substances are detected on the surface of the separator, the display unit 130 displays cracks of the separator under the control of the control unit 150. , scratches, bends, burs, and foreign matter on the surface.

For example, the scan data displayed on the display unit 130 may include patterns for intaglios and embossments of the separation plate.

As such, the display unit 130 may display scan data generated by scanning the separation plate and/or a comparison result between the scan data and the reference data. The display unit 261 may be disposed on a part of the surface inspection device 100 or at a position spaced apart from the surface inspection device 100 . The scan data may be 3D data.

According to an embodiment, the display unit 130 displays various information about the operation of the surface inspection apparatus 100 (eg, a completed operation, an operation currently in progress, an operation to be performed, a time when an operation ends, an operation state, a function, etc.) can be displayed. The display unit 130 may display various types of information (eg, multimedia data or text data). The display unit 261 may include a control circuit for controlling a display that visually provides information to a user.

According to an embodiment, the communication unit 140 may receive reference data for at least one separator plate through a network. Also, the reference data received through the communication unit 140 may be stored in the storage unit 110 under the control of the control unit 150 .

According to an embodiment, the communication unit 140 receives reference data for at least one separator based on short-range communication (eg, Bluetooth, Near Field Communication (NFC), or Beacon). can

According to an embodiment, the controller 150 may drive software to control at least one component connected to the controller 150 based on wired communication or wireless communication. Also, the controller 150 may perform various data processing and calculations based on the wired communication or the wireless communication.

According to an embodiment, the control unit 150 loads commands or data received from the storage unit 110, the detection unit 120, the display unit 130, and the communication unit 140 into the storage unit 110. and processing, and the processed data may be stored in the storage unit 110. Alternatively, the controller 150 may display the processed data through the display unit 130 (eg, a touch screen).

According to an embodiment, the control unit 150 may scan the separation plate by controlling the detection unit 120 . For example, the control unit 150 may scan the separation plate through the 3D profile sensor of the sensing unit 120 and obtain scan data.

According to an embodiment, the control unit 150 may obtain the scan data by recognizing a pattern by the intaglio and embossing of the separator through the 3D profile sensor of the sensing unit 120 .

According to an embodiment, the control unit 150 may obtain scan data generated by scanning the separation plate at least once through the detection unit 120 . For example, the control unit 150 transmits first scan data generated by scanning a first area of the separation plate and second scan data generated by scanning a second area of the separation plate to the sensing unit 120. ) can be obtained through The control unit 150 may generate one third scan data by synthesizing the first scan data and the second scan data. The first scan data and the second scan data may be 2D data. And, the third scan data may be 3D data.

According to an embodiment, the control unit 150 may extract the intaglio, the emboss, and the boundary between the intaglio and emboss of the separation plate from at least one of the first scan data, the second scan data, and the third scan data. there is. The controller 150 may recognize the pattern of the separation plate by identifying the extracted boundary line. For example, the controller 150 may recognize a pattern on a surface (eg, a surface formed by the embossed and intaglio of the separator) that contacts the embossed and intaglio of the separator 120 through the detection unit 120. .

According to an embodiment, the control unit 150 is configured to compare the reference data and the scan data in a predetermined inspection area (eg, a first area or a second area) of the separation plate to inspect the separation plate. can include

For example, the controller 150 may be configured to inspect the separation plate based on the third scan data. Alternatively, the controller 150 may be configured to inspect the separation plate based on at least one of the first scan data and the second scan data. For example, the second area may be a remaining area of the separator plate except for the first area. In this way, by dividing the scan area of the separation plate into a plurality of areas and scanning the separation plate, the controller 150 may obtain more accurate and detailed scan data of the separation plate.

According to an embodiment, when intaglio, embossment, and the boundary between the intaglio and embossing are extracted from the acquired scan data, the control unit 150 determines the extracted intaglio, embossment, and the boundary between the intaglio and embossment and the separation plate. Intaglios, embossments, and boundary lines between intaglios and embossments in corresponding reference data may be mapped, respectively, and the separation plate may be inspected based on the mapping result. For example, the control unit 150 controls pixel values between the extracted negative, embossed, and boundary lines between the negative and embossed edges and the pixel values between the negative, embossed, and negative and embossed borders in the reference data corresponding to the separator. When the difference in is greater than a predetermined value, it can be determined that the separator is damaged by at least one of cracks, dents, scratches, bends, burs, and foreign substances.

For example, since the storage unit 110 stores reference data for a separator to be inspected, the control unit 150 performs one-to-one mapping between the scan data acquired by the sensing unit 120 and the reference data. It can be inspected whether the intaglio, embossment, and the boundary line between the intaglio and embossment on the separator coincide, or whether the separator is damaged by at least one of cracks, scratches, bends, burs, and foreign substances. there is.

According to an embodiment, the control unit 150 compares reference data and scan data in a predetermined inspection area (eg, a first area and/or a second area) of the separation plate to inspect the separation plate. The set inspection area may include at least one plane having the same height among a plurality of planes formed on the separation plate.

2 is a perspective view of a separating plate according to an embodiment of the present invention. 3A is a front view of a separating plate according to an embodiment of the present invention. 3B is a front view of a separator according to another embodiment of the present invention.

Referring to FIGS. 2, 3A and 3B , the separator 200 according to an embodiment of the present invention may be included in a stack constituting a hydrogen fuel cell. The separator 200 is made of a stainless steel material having good electrical conductivity and moisture corrosion resistance. And, the separator 200 is mounted on a vehicle and is made of a thin plate due to weight and volume limitations.

And, the separation plate 200 is formed in a pattern by embossed portions 210 and 310 and flat surfaces 220 and 320 . Alternatively, the separation plate 200 may be formed in a pattern by embossing 310 , intaglio 330 , and plane 320 . For example, heights (h ₁ ) (330, 340) (eg, heights of the embossed edges 310 on the plane 320) by the embossed edges 310 of the separation plate 200 may all be the same. In addition, the depth (h ₂ ) 350 (eg, the depth of the intaglio 330 on the plane 320) by the intaglio 330 of the separation plate 200 may be all the same.

In this way, the separator 200 is formed in a pattern by embossing (or intaglio), and the width 310 of each embossing may be different from or the same as each other. In addition, the width 330 of each intaglio of the separator 200 may be different or the same. In addition, the gap 320 formed by the embossed 310 and the intaglio 330 of the separator 200 may be different or the same depending on the shape of the pattern. Patterns by such embossing or intaglio are various, and the present invention is not limited to a specific pattern.

4 is a flowchart illustrating a method of inspecting a separator according to an embodiment of the present invention. 5 is an exemplary view of a separating plate according to an embodiment of the present invention. 6 is an exemplary view showing reference data for the separator of FIG. 5 . 7 is an exemplary view of a separation plate inspected by a surface inspection apparatus according to an embodiment of the present invention. 8 is an exemplary diagram illustrating scan data generated by scanning the separation plate of FIG. 7 .

Hereinafter, with reference to FIGS. 4 to 8, a method of inspecting a separator according to an embodiment of the present invention will be described in detail.

According to an embodiment, the surface inspection apparatus 100 (eg, the storage unit 110) may store reference data for a separator having a plurality of planes having different heights (S410). The storage unit 110 may be disposed in a part of the surface inspection device 100 or may be spaced apart to transfer reference data to the surface inspection device 100 by wire or wirelessly.

The storage unit 110 may store reference data for at least one separator plate used in various industrial products. The reference data may vary according to various shapes such as the size, thickness, intaglio shape, and embossed shape of the separator. In this way, the separator 200 is formed in an intaglio and/or embossed pattern, and the storage unit 110 may store reference data for the separator having a plurality of planes having different heights.

Referring to FIG. 5 , the separator 200 is a defect-free separator corresponding to reference data. These separators are formed in patterns of flat surfaces 210 and flat surfaces 510 by embossing. The width of the plane 210 due to the embossing may be the same or not the same. The separator 200 shown in FIG. 5 is an example, and the separator according to the present invention may include separators having various patterns.

Referring to FIG. 6 , the reference data 600 for the separator 200 of FIG. 5 may include a pattern 610 for the embossed plane 210 and a pattern 620 for the plane 510. there is. The reference data 600 may include coordinate information of each pixel on the reference data as well as the height, width, and pattern of the embossed plane 210 .

According to an embodiment, the surface inspection apparatus 100 (eg, the controller 150) may generate scan data by scanning the separator at least once (S412). The surface inspection device 100 (eg, the control unit 150) may scan at least a partial area of the separation plate transported by the transfer device at least once through the sensing unit 120. In addition, the surface inspection apparatus 100 (eg, the control unit 150) may generate scan data according to the number of scans, or may generate one scan data after all scans of the separation plate are completed.

For example, the surface inspection apparatus 100 (eg, the control unit 150) obtains first scan data by scanning a first area of the separation plate through the detection unit 120, and Second scan data may be obtained by scanning the second area. The surface inspection apparatus 100 (eg, the controller 150) may synthesize the first scan data and the second scan data to generate one third scan data.

According to an embodiment, the surface inspection apparatus 100 (eg, the control unit 150) uses the generated scan data (eg, at least one of first scan data, second scan data, and third scan data) Intaglios, embossments, and boundary lines between intaglios and embossments of the separator may be extracted.

According to an embodiment, the surface inspection apparatus 100 (eg, the controller 150) may compare the generated scan data with the stored reference data to inspect the separator (S414). The surface inspection apparatus 100 (eg, the controller 150) extracts from the scan data (eg, at least one of the first scan data, the second scan data, and the third scan data) generated in step S412. Intaglio, embossment, and boundary lines between the intaglio and embossment of the separator and the boundary line between the intaglio, embossment, and intaglio and embossment in the reference data corresponding to the separator may be mapped, respectively.

According to an embodiment, the surface inspection apparatus 100 (eg, the control unit 150) overlaps the scan data on the reference data to detect cracks, scratches, bends, burs, and foreign substances of the separator plate. At least one of them can be checked. The surface inspection device 100 (eg, the control unit 150) detects a portion of the scan data deviating from the reference data, cracks, scratches, or bends in the separator in the detected portion It can be determined that this has occurred or that a bur has occurred. Alternatively, when the surface inspection apparatus 100 (eg, the control unit 150) detects a portion of the scan data deviating from the reference data, the separator in addition to the above-described cracks, scratches, bends, and burrs It can be judged to be defective.

According to an embodiment, the surface inspection device 100 (eg, the control unit 150) compares the height, width, and pattern of the embossment of the reference data with the height, width, and pattern of the embossment of the separator under inspection, and separates the It is possible to determine whether the plate is defective or not. In addition, the surface inspection device 100 (eg, the controller 150) compares the depth, width, and pattern of the intaglio of the reference data with the depth, width, and pattern of the intaglio of the separator under inspection to determine whether the separator is defective or not. can judge

For example, the surface inspection apparatus 100 (eg, the control unit 150) determines at least one of a height value, a width value, and a pattern shape of an embossed embossment of the reference data and the embossed embossment of the separator being inspected. It is possible to determine whether the separator is defective by comparing at least one of a height value, a width value, and a pattern shape.

For example, the control unit 150 analyzes the scan data obtained by scanning the separation plate to determine pixel values of intaglio, embossment, and boundary lines between the intaglio and embossment based on the pattern of the separation plate and reference data corresponding to the separation plate. When the difference in pixel values between the intaglio, the emboss, and the boundary between the intaglio and the emboss in exceeds a certain value, the separator is damaged by at least one of cracks, dents, scratches, bends, burs, and foreign substances It can be judged that this has occurred.

For example, the control unit 150 may determine that the separator is damaged when a pixel value on the scan data is larger or smaller than a preset value than a pixel value on the reference data.

Referring to FIG. 7 , for example, in the separator 200, a defect due to at least one of a crack, a dent, a scratch, a bend, a bur, and a foreign material 720 at a specific point or region 710 can exist

Referring to FIG. 8 , the controller 150 may identify coordinate information of a specific point or region 710 where a defect exists in the separator 200 . In addition, the control unit 150 controls the measured values (eg, height, width, pattern) at the corresponding point or area and the reference value corresponding to the specific point or area in the reference data 600 (eg, coordinate information of the reference data). ), the separating plate 200 can be inspected.

For example, in FIG. 7 , when a defect (eg, a scratch) occurs in a specific area 710 of the separator 700 and a foreign substance 720 exists, scan data obtained by scanning the separator 700 ( 800) (eg, the scan data of FIG. 8) may include scan results due to defects and foreign substances 720 in the specific area 710. This scan data 800 is obtained through the 3D profile sensor of the detector 120, and the scan data 800 includes not only defects and foreign matter 720 in the specific area 710, but also cracks, scratches, and bends. , or information on the cause of defects in various cases, such as burrs.

In addition, the controller 150 may inspect the separator by mapping the scan data (eg, scan data 800 of FIG. 8 ) and reference data (eg, reference data 600 of FIG. 6 ). Also, the control unit 150 may display the inspection result on the display unit 130 . The inspection result displayed on the display unit 130 may include information (eg, coordinate information, area indication) indicating which part of the inspected separator has cracks, scratches, or bends. there is. In addition, the inspection result may include information on a location where a bur is generated or a location where a foreign substance is present.

Each step in each of the flowcharts described above may be operated regardless of the order shown, or may be performed simultaneously. In addition, at least one component of the present invention and at least one operation performed by the at least one component may be implemented by hardware and/or software.

As described above, the present invention has been described with reference to the drawings illustrated, but the present invention is not limited by the embodiments and drawings disclosed in this specification, and various modifications are made by those skilled in the art within the scope of the technical idea of the present invention. It is obvious that variations can be made. In addition, although the operational effects according to the configuration of the present invention have not been explicitly described and described while describing the embodiments of the present invention, it is natural that the effects predictable by the corresponding configuration should also be recognized.

100: surface inspection device 110: storage unit
120: detection unit 130: display unit
140: communication unit 150: control unit

Claims (12)

a storage unit for storing reference data for a separator having a plurality of planes having different heights;
a sensing unit scanning the separation plate; and
Obtaining scan data generated by scanning the separator at least once through the sensing unit;
Including a control unit set to inspect the separation plate by comparing the reference data and the scan data in a predetermined inspection area of the separation plate,
The surface inspection apparatus, characterized in that the set inspection area corresponds to at least one plane having the same height among the plurality of planes.
According to claim 1,
The control unit,
Obtaining first scan data generated by scanning a first area of the separation plate and second scan data generated by scanning a second area of the separation plate through the sensing unit;
A surface inspection device configured to synthesize the first scan data and the second scan data to generate one third scan data.
According to claim 2,
The control unit,
It is set to inspect the separating plate based on the generated third scan data,
The second area is a surface inspection device, characterized in that the remaining area except for the first area of the separation plate.
According to claim 1,
The control unit,
Extracting intaglios, embossments, and boundary lines between intaglios and embossments from the obtained scan data,
Mapping the extracted intaglio, embossment, and intaglio and embossed boundary lines and the intaglio, embossment, and intaglio and embossed boundary lines in the reference data corresponding to the separator, respectively;
A surface inspection device configured to inspect the separating plate based on the mapping result.
According to claim 1,
The control unit,
A surface inspection device configured to inspect whether damage caused by at least one of cracks, scratches, bends, burs, and foreign substances to the separation plate has occurred.
According to claim 1,
The sensing unit includes a 3D (three demensions) profile sensor.
According to claim 1,
the sensor,
A surface inspection device disposed in the surface inspection device to recognize patterns by intaglio and embossing of the separator.
The process of scanning the separator plate;
obtaining scan data generated by scanning the separation plate at least once; and
Comprising a step of inspecting the separation plate by comparing reference data and the scan data in a predetermined inspection area of the separation plate,
The reference data is data for a separator having a plurality of planes having different heights,
The surface inspection method, characterized in that the set inspection area corresponds to at least one plane having the same height among the plurality of planes.
According to claim 8,
The process of obtaining the scan data,
generating first scan data obtained by scanning a first area of the separation plate and second scan data obtained by scanning a second area of the separation plate; and
and synthesizing the first scan data and the second scan data to generate one third scan data.
According to claim 9,
The process of generating the one third scan data,
Inspecting the separation plate based on the generated third scan data;
The second area is a surface inspection method, characterized in that the remaining area except for the first area of the separator.
According to claim 8,
In the process of inspecting the separator,
extracting intaglios, embossments, and boundary lines between intaglios and embossments from the obtained scan data;
mapping the extracted intaglio, embossment, and the boundary between the intaglio and embossment and the boundary line between the intaglio, embossment, and intaglio and embossment in the reference data corresponding to the separator, respectively; and
and inspecting the separator based on the mapping result.
According to claim 11,
In the process of inspecting the separator,
A surface inspection method comprising the step of inspecting whether damage by at least one of cracks, scratches, bends, burs, and foreign substances has occurred on the separation plate.

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