Measurement system, method, apparatus, and storage medium for battery device

Abstract

This application discloses a measurement system, method, apparatus, and storage medium for a battery device. The measurement system includes an imaging element, a measuring element, and a battery component conveyor line, with both the imaging element and the measuring element disposed on the battery component conveyor line. The solution provided in this application compares the difference between the actual number of pixel rows and the theoretical number of pixel rows to see if it falls within a preset range. If it does, the sample image size is determined to be accurate; if it exceeds the preset range, the sample image size is compensated. This compensation prevents inaccurate battery component size measurements due to battery component slippage or missing rows in the imaging element when the preset range is exceeded, thus enabling accurate measurement of the battery component's length.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a measurement system, method, apparatus and storage medium for a battery device. Background Technology

[0002] In industrial production, when battery components are conveyed by rotating rollers, their dimensions and lengths are usually measured using measuring devices.

[0003] The measuring devices in the related technologies cannot accurately measure the dimensions and length of battery components during use. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device measurement system, method, apparatus and storage medium, which can solve the problem that existing measurement devices cannot accurately measure the size and length of battery components during use.

[0005] To address the aforementioned technical problems, in a first aspect, this application proposes a method for measuring a battery device, the method comprising:

[0006] S1: Obtain the sample image size of the battery component during transportation, and obtain the actual number of pixel rows based on the sample image;

[0007] S2: Obtain the actual scale dimensions of the battery components during transport;

[0008] S3: Calculate the theoretical number of pixel rows = actual scale size / single pixel size; when the difference between the actual number of pixel rows and the theoretical number of pixel rows is not within the preset range, compensate for the sample image size.

[0009] In the technical solution of this application embodiment, by comparing whether the difference between the actual number of pixel rows and the theoretical number of pixel rows is within a preset range, if it is within the preset range, the sample image size is determined to be accurate; if it exceeds the preset range, the sample image size is compensated. In this way, when the preset range is exceeded, by compensating for the sample image size, the inaccurate measurement of the battery component size is avoided due to battery component slippage or missing rows in the photograph, thereby the size and length of the battery component can be accurately measured.

[0010] In some embodiments, after obtaining the actual number of pixel rows based on the sample image, the method further includes:

[0011] The sample image size is obtained by multiplying the actual number of pixel rows by the size of a single pixel. In this way, by capturing a sample image of the battery component during transport using a CCD camera, the actual number of pixel rows can be obtained by examining the detailed information of the sample image. Then, the sample image size can be easily obtained by multiplying the pre-measured single pixel size by the corresponding actual number of pixel rows.

[0012] In some embodiments, obtaining the actual scale dimensions of the battery component during transport includes:

[0013] The actual scale dimensions of the battery components during transport are obtained by measuring a ruler.

[0014] In some embodiments, the compensation for the sample image size includes:

[0015] Calculate the compensation value = (theoretical number of pixel rows - actual number of pixel rows) × single pixel size;

[0016] The final size of the sample image is determined by adding the compensation value to the sample image size. This way, when the battery components and rotating roller slip or the photographed part is lost, an accurate size can be obtained by adding the compensation value to the sample image size.

[0017] In some embodiments, if the preset range is exceeded, the method further includes:

[0018] The system calibrates sample images whose differences exceed a preset range within a preset time period. This way, when the difference between the actual and theoretical pixel counts exceeds the preset range over a certain period, the corresponding sample image can be calibrated using a coding device, facilitating the identification of the specific sample image.

[0019] Secondly, this application proposes a measurement system for a battery device, comprising: an imaging element, a measuring element, and a battery component conveying line. The imaging element and the measuring element are both disposed on the battery component conveying line. The imaging element is configured to acquire a sample image size of the battery component on the battery component conveying line during conveying, and the measuring element is configured to acquire an actual scale image size of the battery component on the battery component conveying line during conveying.

[0020] In some embodiments, the measuring system further includes a photographing roller disposed on the battery component conveyor line, wherein both the photographing element and the measuring element are disposed on the photographing roller.

[0021] Thirdly, this application proposes a computer device including a memory, a second processor, and a computer program stored in the memory and executable on the second processor, wherein the second processor executes the computer program to implement a measurement method for a battery device as described in any one of the embodiments of this application.

[0022] Fourthly, this application proposes a computer-readable storage medium having a computer program stored thereon for implementing a measurement method for a battery device as described in any one of the embodiments of this application.

[0023] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the embodiments described below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0025] Figure 1 A schematic flowchart illustrating the measurement method of a battery device provided in some embodiments of this application;

[0026] Figure 2 This is a schematic diagram of the structure of a computer device provided in some embodiments of this application. Detailed Implementation

[0027] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0029] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0030] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0031] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0032] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0033] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0034] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0035] When CCDs measure the dimensions of high-speed moving objects, due to issues such as the testing environment and material characteristics, there will inevitably be situations where the material slips relative to the rollers and the camera loses track. This will result in large measurement errors, which will seriously affect the subsequent processes such as winding and the performance of the battery cell products.

[0036] Based on the above considerations, in order to solve the problem that the measuring device cannot accurately measure the length of the battery component during use, a measurement method for the battery device is designed. The method includes: acquiring the sample image size of the battery component during transportation; acquiring the actual number of pixel rows based on the sample image; acquiring the actual scale size of the battery component during transportation; calculating the theoretical number of pixel rows = actual scale size / single pixel size; and compensating for the sample image size when the difference between the actual number of pixel rows and the theoretical number of pixel rows is not within a preset range.

[0037] In the technical solution of this application embodiment, by determining whether the difference between the actual number of pixel rows and the theoretical number of pixel rows is within a preset range, if it is within the preset range, the sample image size is determined to be accurate; if it exceeds the preset range, the sample image size is compensated. In this way, when the preset range is exceeded, by compensating for the sample image size, the inaccurate measurement of the battery component size is avoided due to battery component slippage or missing rows in the photograph, thereby accurately measuring the size and length of the battery component.

[0038] In this application, "battery" refers to a single physical module comprising one or more individual battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery pack, etc. Batteries can serve as a power source or power system for electrical devices, which helps improve the overall performance of the battery and facilitates its widespread adoption.

[0039] In a battery, there can be multiple battery cells, which can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells are connected in both series and parallel configurations. Multiple battery cells can be directly connected in series, parallel, or a combination thereof, and then the entire assembly of these battery cells is housed within a casing. Alternatively, a battery can consist of multiple battery cells first connected in series, parallel, or a combination thereof to form a battery module, and then these modules are connected in series, parallel, or a combination thereof to form a whole, which is also housed within a casing. The battery can also include other structures; for example, it can include a busbar component for electrical connection between the multiple battery cells.

[0040] Each battery cell can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell can be cylindrical, flat, cuboid, or other shapes.

[0041] The battery cell in this embodiment may include a casing, electrode assembly, and electrode terminals. The casing includes a housing and a top cover; the housing has an opening, and the top cover closes the opening to isolate the internal environment of the battery cell from the external environment.

[0042] The housing is a component used in conjunction with the top cover to form the internal environment of a single battery cell. This internal environment can house electrode components, electrolyte, and other parts. The housing and top cover can be separate components. The housing can come in various shapes and sizes. Specifically, the shape of the housing can be determined based on the specific shape and size of the electrode components. The housing can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic.

[0043] A top cover is a component that closes onto the opening of the housing to isolate the internal environment of the battery cell from the external environment. The shape of the top cover can be adapted to the shape of the housing to fit it. Optionally, the top cover can be made of a material with a certain degree of hardness and strength (such as aluminum alloy), so that the top cover is less prone to deformation under pressure and impact, allowing the battery cell to have higher structural strength and improved reliability. Functional components such as electrode terminals can be provided on the top cover. The electrode terminals can be used for electrical connection with electrode assemblies to output or input electrical energy to the battery cell. The material of the top cover can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating structure can also be provided on the inner side of the top cover. The insulating structure can be used to isolate the electrical connection components inside the housing from the top cover to reduce the risk of short circuits. For example, the insulating structure can be plastic, rubber, etc.

[0044] Electrode assemblies are the components within a single battery cell where electrochemical reactions occur. The casing may contain one or more electrode assemblies. An electrode assembly is primarily formed by winding or stacking positive and negative electrode sheets, typically with a separator between them to prevent internal short circuits. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly, while the portions without active material each form a tab. The positive and negative tabs can be located together at one end of the main body or at opposite ends. During charging and discharging, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop. Furthermore, electrode assemblies can be either wound or stacked.

[0045] According to some embodiments of this application, such as Figure 1 As shown, this application also provides a method for measuring a battery device, the method comprising:

[0046] Step S1: Obtain the sample image size of the battery component during transportation, and obtain the actual number of pixel rows based on the sample image;

[0047] Step S2: Obtain the actual scale dimensions of the battery components during transport;

[0048] Step S3: Calculate the theoretical number of pixel rows = actual scale size / single pixel size; when the difference between the actual number of pixel rows and the theoretical number of pixel rows is not within the preset range, compensate for the sample image size.

[0049] The battery components in this embodiment can be parts such as electrode length, tab spacing, and tab width. The specific components can be determined according to the actual situation, and this specification does not limit them.

[0050] In this embodiment, the battery components are all placed on corresponding conveying devices for transport. The conveying devices may include multiple rotating rollers and conveyor belts, and the multiple rotating rollers and conveyor belts are connected to form a structure for transporting the battery components.

[0051] In order to ensure that the battery components can be transported at equal intervals during the transportation process, this embodiment can be equipped with structures such as clamps and fixing grooves on the corresponding conveyor belt.

[0052] When the battery components are conveyed on the rotating rollers of the battery component conveyor line, in step S1, a sample image of the battery components during conveyance can be captured using imaging devices such as CCD, industrial cameras, and high-speed strobe light sources. By viewing the detailed information of the sample image, the corresponding actual number of pixel rows can be obtained. In this embodiment, the imaging device can be fixed by a robotic arm, a three-dimensional adjustment frame, etc. At the same time, a light source can be set on the conveying device. This light source is located around the imaging device, and the angle and intensity of the light source can be adjusted. For example, the light source can be fixed on the conveying device through a ball connection structure, and the corresponding angle can be adjusted by rotating the light source.

[0053] In step S2, the actual scale dimensions of the battery components during transport can be measured simultaneously using other measuring rulers such as film rulers.

[0054] In step S3, the single-pixel size can be measured using a measuring ruler before shooting and stored in the CCD. This way, when the CCD captures the actual scale size, the theoretical number of pixel rows can be quickly obtained by dividing the actual scale size by the single-pixel size. Then, the difference between the actual and theoretical number of pixel rows is calculated. If the difference is within 0-±5, the sample image size is considered accurate, and the CCD can continue to capture the size of the battery component during transport. If the difference exceeds ±5, it is determined that the battery component and the rotating roller are slipping or the captured image is missing rows during transport, requiring compensation for the measured sample image size. It is understood that the above difference range of 0-±5 is merely an example; this range can be adjusted according to actual requirements, for example, a difference range of 00-±6.5, which is not limited here.

[0055] In this way, when the sample image size is compensated for when the sample exceeds the preset range, the inaccurate measurement of the battery component size is avoided due to slippage of the battery component or loss of the photographed part, thus allowing the accurate measurement of the battery component's length.

[0056] According to some embodiments of this application, after obtaining the actual number of pixel rows from the sample image, the method further includes:

[0057] The sample image size is obtained by multiplying the actual number of pixel rows by the size of a single pixel.

[0058] In this embodiment, a sample image of the battery component during transportation is captured by a CCD camera. By viewing the detailed information of the sample image, the corresponding actual number of pixel rows can be obtained. Then, the sample image size can be easily obtained by multiplying the pre-measured single pixel size by the corresponding actual number of pixel rows.

[0059] In this embodiment, when capturing sample images of battery components during transport using a CCD camera, if the obtained sample image is tilted, the image can be corrected using a projection transformation method. If the obtained sample image is unclear, the angle and position of the CCD camera are adjusted so that the CCD camera can capture a clear sample image.

[0060] According to some embodiments of this application, obtaining the actual scale dimensions of the battery component during transportation includes:

[0061] The actual scale dimensions of the battery components during transport are obtained by measuring a ruler.

[0062] In this embodiment, a film ruler, right angle ruler, etc. are used, but the specific ones can be determined according to the actual situation. This specification does not limit the embodiments in this way.

[0063] In this embodiment, a photographing roller can be installed on the battery component conveyor line. This roller can rotate synchronously relative to the conveyor line. A slot is provided on the roller to fix the film ruler in the corresponding slot, ensuring a stable connection between the film ruler and the roller. During measurement, the CCD can directly capture the scale dimensions on the measuring ruler.

[0064] According to some embodiments of this application, compensation for the sample image size includes:

[0065] Calculate the compensation value = (theoretical number of pixel rows - actual number of pixel rows) × single pixel size;

[0066] The final size of the sample image is determined by adding the compensation value to the sample image size.

[0067] In this way, when the battery components and rotating rollers slip or the photographed parts are lost, the accurate dimensions can be obtained by adding the sample image size to the compensation value.

[0068] According to some embodiments of this application, if the preset range is exceeded, the method further includes:

[0069] The sample images with a difference exceeding a preset range are calibrated within a preset time.

[0070] The preset time in this embodiment can be 8 minutes, 10 minutes, etc., and the specific time can be determined according to the actual situation. This embodiment does not limit this.

[0071] In this embodiment, when the difference between the actual number of pixel rows and the theoretical number of pixel rows exceeds a preset range within a certain period of time, the corresponding sample image can be calibrated by a coding device, which makes it easier to determine the corresponding sample image.

[0072] It should be noted that although the operations of the method of this application are described in a specific order in the accompanying drawings, this does not require or imply that these operations must be performed in that specific order, or that all the operations shown must be performed to achieve the desired result. Additionally or alternatively, certain steps may be omitted, multiple steps may be combined into one step, and / or one step may be broken down into multiple steps.

[0073] According to some embodiments of this application, this application provides a measurement system for a battery device. The measurement system includes: an imaging element, a measuring element, and a battery component conveying line. Both the imaging element and the measuring element are disposed on the battery component conveying line. The imaging element is configured to acquire a sample image size of the battery component on the battery component conveying line during conveying, and the measuring element is configured to acquire the actual scale image size of the battery component on the battery component conveying line during conveying.

[0074] In this embodiment, the imaging device can be a CCD, and the measuring device can be a film ruler, a right-angle ruler, etc. The specific device can be determined according to the actual situation, and this embodiment does not limit it.

[0075] In this embodiment, the measuring device can measure parameters such as electrode length, tab spacing, and tab width in the battery component, which are not limited here.

[0076] In this embodiment, the imaging device works as follows: it captures a sample image of the battery component during transport, then obtains the actual number of pixel rows based on the sample image, and finally multiplies the actual number of pixel rows by the size of a single pixel to obtain the sample image size.

[0077] In this embodiment, the actual number of pixel rows can be obtained by viewing the detailed information of the corresponding sample image. Then, the sample image size can be easily obtained by multiplying the pre-measured single pixel size by the corresponding actual number of pixel rows.

[0078] In this embodiment, when the battery components are transported on the battery component conveyor line, the sample image size of the battery components during transport can be captured by imaging devices such as CCD, industrial camera, and high-speed strobe light source. The imaging device in this embodiment can be fixed by a robotic arm, three-dimensional adjustment frame, etc. At the same time, a light source can be set on the conveying device. The light source is located around the imaging device, and the angle and intensity of the light source can be adjusted. For example, the light source is fixed on the conveying device by a ball connection structure, and the corresponding angle can be adjusted by rotating the light source.

[0079] Then, using measuring instruments and other measuring scales, the actual scale image size of the battery component during transport is simultaneously measured. At this point, the difference between the sample image size and the actual scale image size is compared. If the difference is within 0-±5mm, the sample image size is considered accurate, and the CCD can continue to capture the dimensions of the battery component during transport. When the difference exceeds ±5mm, it is determined that slippage or missing data is occurring on the battery component and the rotating rollers on the battery component transport line during transport. In this case, compensation is needed for the measured sample image size. It is understood that the above difference range of 0-±5mm is merely an example; this range can be adjusted according to actual requirements, for example, between 00-±6.5mm, without limitation. In this way, when the preset range is exceeded, compensation for the sample image size avoids inaccurate battery component size measurement due to slippage or missing data, thus ensuring accurate measurement of the battery component's length.

[0080] According to some embodiments of this application, the measurement system further includes a photographing roller, which is disposed on the battery component conveyor line, and both the photographing element and the measuring element are disposed on the photographing roller.

[0081] In this embodiment, a slot is provided on the imaging roller, and the measuring component is snapped into the corresponding slot. At the same time, the imaging component can be fixed on the imaging roller by a buckle. When the imaging component is working, it can simultaneously capture the corresponding sample image size and the actual scale image size measured on the measuring component.

[0082] The computer device also provided in this application includes a memory, a second processor, and a computer program stored in the memory and executable on the second processor. When the second processor executes the program, it implements the measurement method of the battery device as described above.

[0083] The following is for reference. Figure 2 , Figure 2 This is a schematic diagram of the structure of a computer device according to an embodiment of this application.

[0084] like Figure 2 As shown, the computer system 300 includes a central processing unit (CPU) 301, which can perform various appropriate actions and processes based on programs stored in read-only memory (ROM) 302 or programs loaded from storage section 303 into random access memory (RAM) 303. The RAM 303 also stores various programs and data required for the operation of the system 300. The CPU 301, ROM 302, and RAM 303 are interconnected via a bus 304. An input / output (I / O) interface 305 is also connected to the bus 304.

[0085] The following components are connected to I / O interface 305: an input section 306 including a keyboard, mouse, etc.; an output section 307 including a cathode ray tube (CRT), liquid crystal display (LCD), etc., and speakers, etc.; a storage section 308 including a hard disk, etc.; and a communication section 309 including a network interface card such as a LAN card, modem, etc. The communication section 309 performs communication processing via a network such as the Internet. A drive 310 is also connected to I / O interface 305 as needed. Removable media 311, such as a disk, optical disk, magneto-optical disk, semiconductor memory, etc., are installed on drive 310 as needed so that computer programs read from them can be installed into storage section 308 as needed.

[0086] Specifically, according to embodiments of this application, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of this application include a computer program product comprising a computer program carried on a machine-readable medium, the computer program containing program code for performing the methods shown in the flowcharts. In such embodiments, the computer program can be downloaded and installed from a network via communication section 303, and / or installed from removable medium 311. When the computer program is executed by central processing unit (CPU) 301, it performs the functions defined above in the system of this application.

[0087] It should be noted that the computer-readable medium shown in this application may be a computer-readable signal medium or a computer-readable storage medium, or any combination thereof. A computer-readable storage medium may be, for example,, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of a computer-readable storage medium may include, but are not limited to: an electrical connection having one or more wires, a portable computer disk, a hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination thereof.

[0088] In another aspect, this application also provides a computer-readable storage medium, which may be included in the device described in the above embodiments; or it may exist independently and not assembled into the device. The computer-readable storage medium stores one or more programs that, when used by one or more second processors, execute the measurement method of the battery device described in this application.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for measuring a battery device, characterized in that, The method includes: S1: Obtain the sample image size of the battery component during transportation, and obtain the actual number of pixel rows based on the sample image; multiply the actual number of pixel rows by the single pixel size to obtain the sample image size; S2: Obtain the actual scale dimensions of the battery components during transport using a measuring ruler; S3: Calculate the theoretical number of pixel rows = actual scale size / single pixel size; if the difference between the actual number of pixel rows and the theoretical number of pixel rows is not within the preset range, it is determined that the battery component slipped during transportation or that the photographed part had missing rows when acquiring the sample image size. In this case, the sample image size is compensated.

2. The measurement method for the battery device according to claim 1, characterized in that, The compensation for the sample image size includes: Calculate the compensation value = (theoretical number of pixel rows - actual number of pixel rows) × single pixel size; The final size of the sample image is determined by adding the compensation value to the sample image size.

3. The measurement method for the battery device according to claim 1 or 2, characterized in that, If the range exceeds a preset limit, the method further includes: The sample images with a difference exceeding a preset range are calibrated within a preset time.

4. A measurement system for a battery device, characterized in that, include: The device includes an imaging component, a measuring component, and a battery component conveying line. The imaging component and the measuring component are both located on the battery component conveying line. The imaging component is configured to acquire a sample image size of the battery component on the battery component conveying line during transport. The measuring component is configured to acquire an actual scale image size of the battery component on the battery component conveying line during transport.

5. The measurement system for the battery device according to claim 4, characterized in that, The measurement system also includes a photographing roller, which is disposed on the battery component conveyor line, and both the photographing element and the measuring element are disposed on the photographing roller.

6. A computer device comprising a memory, a second processor, and a computer program stored in the memory and executable on the second processor, characterized in that, When the second processor executes the computer program, it implements the measurement method of the battery device as described in any one of claims 1 to 3.

7. A computer-readable storage medium, characterized in that, It contains a computer program for implementing the measurement method of the battery device as described in any one of claims 1 to 3.

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