Battery measurement equipment calibration method, device, equipment, storage medium and program product

Abstract

The present application relates to a battery measurement equipment calibration method, apparatus, device, storage medium and program product. The method comprises: obtaining a target measurement value obtained by measuring the target tab spacing by the measuring device, determining a calibration index value of the measuring device based on the target measurement value and the target reference value, and then calibrating the measuring device's measurement capability of the target length based on the tab spacing tolerance and the calibration index value, thereby obtaining a first calibration result of the measuring device. Since this method does not require a measurement person to measure the length of the intercepted tab pole piece to obtain measurement data and obtain a calibration result of the measuring device, the method calibrates the measuring device's measurement capability of the tab spacing through the determined tab spacing tolerance, and then calibrates the measuring device's measurement capability of the target length, thereby improving the accuracy of the obtained first calibration result.

Description

Technical Field

[0001] The present application relates to the technical field of measurement equipment calibration, and in particular to a battery measurement equipment calibration method, apparatus, device, storage medium, and program product. Background Art

[0002] During the production process of the tabs and pole sheets, the pole sheet material can be cut with the help of a pole sheet die-cutting machine to form a tab pole sheet with a tab, and the measuring equipment measures the target length of the tab pole sheet required to produce a battery cell, and the tab pole sheet with the target length is wound into a battery cell. Therefore, the accuracy of the measuring equipment is crucial, and it is necessary to calibrate the accuracy of the measuring equipment.

[0003] Currently, operators manually cut the tabs and pole pieces required to produce a battery cell, place the cut tabs and pole pieces on a measuring table, use a soft ruler or a steel ruler to measure the length of the cut tabs and pole pieces, and compare the measured data with the measured value of the measuring equipment to obtain the calibration result of the measuring equipment for the target length.

[0004] However, this method has the problem of low accuracy of the verification results. Summary of the Invention

[0005] Based on this, it is necessary to provide a battery measuring device calibration method, apparatus, device, storage medium and program product that can improve the accuracy of the calibration results of the measuring device to address the above technical problems.

[0006] In a first aspect, the present application provides a method for calibrating a battery measurement device. The method comprises:

[0007] Obtaining a target measurement value obtained by measuring the target tab spacing using a measuring device;

[0008] Determine the calibration index value of the measuring equipment based on the target measurement value and the target reference value;

[0009] According to the tab spacing tolerance and the calibration index value, the measuring equipment's ability to measure the target length is calibrated to obtain a first calibration result of the measuring equipment; the target length is the length of the tab pole piece used to produce a battery cell, and the tab spacing tolerance is determined based on the preset total length tolerance corresponding to the target length and the total number of tab spacings on the tab pole piece of the target length.

[0010] In this embodiment, a target measurement value is obtained by measuring the target tab spacing using a measuring device, and a calibration index value of the measuring device is determined based on the target measurement value and a target reference value. Furthermore, the measuring device's ability to measure the target length is verified based on the tab spacing tolerance and the calibration index value, thereby obtaining a first calibration result for the measuring device. Because this method does not require a surveyor to measure the length of a cut tab pole piece to obtain measurement data and obtain a calibration result for the measuring device, the method instead verifies the measuring device's ability to measure the tab spacing using the determined tab spacing tolerance, thereby further verifying the measuring device's ability to measure the target length. This improves the accuracy of the first calibration result obtained.

[0011] In one embodiment, the tab spacing tolerance is determined based on the ratio of a preset total length tolerance to the square root of the total number of tabs.

[0012] In this embodiment, the tab spacing tolerance is determined based on the ratio of the preset total length tolerance to the square root of the total number, so that the determined tab spacing tolerance meets the actual control requirements of the preset total length tolerance. When the tab spacing tolerance meets the actual control requirements of the preset total length tolerance, the measurement equipment's ability to measure the target length is verified, thereby improving the accuracy of the first verification result obtained.

[0013] In one embodiment, the tab spacing tolerance is equal to the ratio.

[0014] In this embodiment, the tab spacing tolerance is equal to the ratio, so that the measuring equipment's ability to measure the target length can be verified when the tab spacing tolerance meets the actual control requirements of the preset total length tolerance, thereby improving the accuracy of the first verification result.

[0015] In one embodiment, the measurement capability of the measuring device for the target length is verified based on the tab spacing tolerance and the verification index value to obtain a first verification result of the measuring device, including:

[0016] Comparing the calibration index value corresponding to the calibration method with the tab spacing tolerance of a first preset multiple to obtain a first comparison result;

[0017] According to the first comparison result, the measuring ability of the measuring device for the target length is verified to obtain a first verification result of the measuring device.

[0018] In this embodiment, a first comparison result is obtained by comparing the verification index value corresponding to the verification method with the tab spacing tolerance of a first preset multiple. Based on the first comparison result, the measurement capability of the measuring device for the target length is verified to obtain the first verification result of the measuring device, thereby improving the accuracy of the first verification result.

[0019] In one embodiment, obtaining a target measurement value obtained by measuring a target tab spacing using a measuring device includes:

[0020] If the calibration method is an offline calibration method, the tab pole piece with a preset length of tab spacing that has been measured by the measuring equipment is used as the sample tab pole piece;

[0021] The measurement value obtained by measuring the tab spacing on the sample tab pole piece by the measuring device is used as the target measurement value; the preset length is less than the target length.

[0022] In this embodiment, if the calibration method is an offline calibration method, a tab pole piece with a preset length of tab spacing that has been measured by the measuring device is used as a sample tab pole piece, and the measurement value obtained by the measuring device measuring the tab spacing on the sample tab pole piece is used as the target measurement value. This allows different strategies to be used to obtain target measurement values ​​based on different calibration methods, so that the obtained target measurement values ​​are more consistent with the corresponding calibration method. Furthermore, since the length of the sample tab pole piece is less than the target length, not only can the cost required to calibrate the measurement capability of the measuring device be reduced, but also a calibration index value can be obtained by obtaining a smaller number of target measurement values ​​and using the smaller number of target measurement values ​​and the corresponding target reference value, thereby improving the efficiency of obtaining the calibration index value and further improving the efficiency of obtaining the first calibration result.

[0023] In one embodiment, the method further comprises:

[0024] The tab spacing on the sample tab pole piece on the measuring table is measured by an image measuring instrument to obtain the target reference value corresponding to the offline calibration method; a weight is hung at one end of the sample tab pole piece, and the gravity of the weight is consistent with the tension of the tab die-cutting machine's production machine.

[0025] In this embodiment, an image measuring instrument is used to measure the tab spacing of a sample tab and pole piece on a measuring table to obtain a target reference value corresponding to the offline calibration method. Because the gravity of the weight is consistent with the tension of the tab die-cutting machine, the measurement environment of the sample tab and pole piece is consistent with the measurement environment of the production machine, making the target reference value more consistent with the measurement environment of the production machine. The target reference value is more accurate than the traditional reference value using manual measurement data, thereby improving the accuracy of the first calibration result of the measuring device.

[0026] In one embodiment, determining a calibration index value of a measuring device according to a target measurement value and a target reference value includes:

[0027] Determine the measurement difference between the target reference value and the target measurement value corresponding to the offline calibration method;

[0028] Determine the calibration index value of the measuring equipment based on the measurement difference.

[0029] In this embodiment, the measurement difference between the target reference value and the target measurement value corresponding to the offline calibration method is determined, and the calibration index value of the measuring device is determined based on the measurement difference. Because the target reference value is more accurate than traditional reference values ​​using manually measured measurement data, the calibration index value obtained based on the more accurate target reference value is also more accurate, thereby improving the accuracy of the first calibration result obtained based on the calibration index value.

[0030] In one embodiment, determining a calibration index value of a measuring device based on a measurement difference includes:

[0031] The measurement difference is used as the calibration index value of the measuring equipment.

[0032] In this embodiment, by directly using the measurement difference as the calibration index value of the measuring device, obtaining the calibration index value is simpler and faster, thereby improving the efficiency of obtaining the first calibration result based on the calibration index value.

[0033] In one embodiment, verifying the measuring capability of the measuring device for the target length based on the first comparison result to obtain a first verification result of the measuring device includes:

[0034] If the first comparison result is that the measurement difference is less than or equal to the first preset multiple of the tab spacing tolerance, then determining that the first verification result is that the measurement capability of the tab pole piece length is normal;

[0035] If the first comparison result is that the measurement difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

[0036] In this embodiment, the first comparison result is obtained by directly comparing the size of the measured difference with the first preset multiple of the tab spacing tolerance. This method is relatively quick and simple, thereby improving the efficiency of the first comparison result obtained, thereby improving the efficiency of the first verification result obtained.

[0037] In one embodiment, obtaining a target measurement value obtained by measuring a target tab spacing using a measuring device includes:

[0038] If the calibration method is an online calibration method, the tab spacings of multiple sizes on the first standard component are measured by a measuring device to obtain first measurement values ​​corresponding to the tab spacings of each size;

[0039] Among them, the target measurement value includes the first measurement value corresponding to the tab spacing of each size, the first standard part is a standard part arranged between the first pole piece material and the second pole piece material, the first pole piece material and the second pole piece material are materials on the workbench of the tab die-cutting machine when the tab die-cutting machine is working, and the grayscale of the first standard part is consistent with the grayscale of the tab pole piece.

[0040] In this embodiment, since the first standard part is a standard part between the materials on the workbench of the tab die-cutting machine when the tab die-cutting machine is working, the measurement environment of the first standard part is consistent with the measurement environment when the tab pole piece is produced, and the grayscale of the first standard part is consistent with the grayscale of the tab pole piece, so that the first standard part can be used to replace the actual tab pole piece, thereby improving the consistency between the first measurement value and the measurement value obtained by the measuring equipment measuring the tab spacing when the tab pole piece is produced, and then realizing the measurement capability of the online calibration measuring equipment based on the first measurement value, and improving the accuracy of the first calibration result obtained under the online calibration mode.

[0041] In one embodiment, determining a calibration index value of a measuring device according to a target measurement value and a target reference value includes:

[0042] Determining a deviation between a first actual length of a tab spacing of each size on a first standard component and a corresponding first measurement value; wherein the target reference value includes the first actual length of the tab spacing of each size on the first standard component;

[0043] A calibration index value of the measuring device is determined according to a first bias result corresponding to the spacing between the tabs on the first standard component.

[0044] In this embodiment, the deviation between the first actual length of the tab spacing of each size on the first standard component and the corresponding first measurement value is determined, and a calibration index value of the measuring device is determined based on the first bias result corresponding to each tab spacing on the first standard component. By performing a bias analysis on the first measurement value, the measurement accuracy and consistency of the measuring device for tab spacings of different sizes can be evaluated, thereby improving the reliability of the obtained calibration index value, thereby improving the reliability and accuracy of the first calibration result obtained based on the calibration index value.

[0045] In one embodiment, determining a calibration index value of a measuring device based on a first bias result corresponding to each tab spacing on a first standard component includes:

[0046] Fitting a first bias result corresponding to each tab spacing on the first standard component to obtain a first linearity;

[0047] The first bias result and the first linearity corresponding to the spacing between the tabs on the first standard component are used as calibration index values.

[0048] In this embodiment, the first linearity is obtained by fitting the first bias results corresponding to the spacing between each tab on the first standard part, and the first bias results and the first linearity corresponding to the spacing between each tab on the first standard part are used as verification index values, so that the results obtained by linear bias analysis are used as verification index values, so that the verification index values ​​can cover the changing trends of the spacing between tabs of different sizes, and verify the measurement accuracy and reliability of the measurement equipment for the spacing between tabs of different sizes.

[0049] In one embodiment, verifying the measuring capability of the measuring device for the target length based on the first comparison result to obtain a first verification result of the measuring device includes:

[0050] If the first comparison result satisfies the first verification condition, it is determined that the first verification result is that the measurement capability of the length of the tab pole piece is normal; the first verification condition is that the first linearity is less than or equal to the first preset multiple of the tab spacing tolerance, and each first bias result is less than or equal to the first preset multiple of the tab spacing tolerance;

[0051] If the first comparison result does not meet the first verification condition, it is determined that the first verification result is that the measurement capability of the length of the tab and the pole piece is abnormal.

[0052] In this embodiment, by judging whether the first linearity is less than or equal to the first preset multiple of the tab spacing tolerance, and whether each first bias result is less than or equal to the first preset multiple of the tab spacing tolerance, the first verification result can be determined based on a more comprehensive verification index value, thereby improving the reliability and accuracy of the first verification result obtained, and reducing the cost required for verification.

[0053] In one embodiment, the method further comprises:

[0054] Measuring the length of each tab of each size on the first standard component in a target direction using a measuring device to obtain a second measurement value of each tab of each size in the target direction; the target direction includes a first direction in which the maximum length of the first standard component is located and / or a second direction perpendicular to the first direction;

[0055] Obtain a second deviation result of a second actual length of a tab of each size on the first standard component and a second measured value in the same direction;

[0056] The measurement capability of the measuring device for the tab size is verified based on the second deviation results corresponding to the tabs of various sizes in the same direction and the tab length tolerance, thereby obtaining a second verification result of the measuring device.

[0057] In this embodiment, a measuring device measures the length of each tab size on a first standard component in a target direction, obtaining a second measurement value for each tab size in the target direction. A second deviation between the second actual length of each tab size on the first standard component in the same direction and the second measurement value is obtained. Based on the second deviation result corresponding to each tab size in the same direction and the tab length tolerance, the measuring device's ability to measure tab size is verified, resulting in a second verification result for the measuring device. By performing a bias analysis on the second measurement value, the measuring device's measurement accuracy and consistency for tabs of different sizes can be evaluated, thereby improving the reliability and accuracy of the obtained second verification result.

[0058] In one embodiment, the measurement capability of the measuring device for the tab size is verified based on the second deviation results corresponding to the tabs of various sizes in the same direction and the tab length tolerance, and the second verification result of the measuring device is obtained, including:

[0059] Fitting the corresponding second bias results in the same direction to obtain a second linearity;

[0060] Comparing the second linearity with a second preset multiple of the tab length tolerance, and comparing each second bias result with the second preset multiple of the tab length tolerance to obtain a second comparison result;

[0061] According to the second comparison result, the measurement capability of the measuring device for the tab size is verified to obtain a second verification result.

[0062] In this embodiment, a second linearity is obtained by fitting corresponding second bias results in the same direction, and the second linearity is compared with a second preset multiple of the tab length tolerance. Furthermore, each second bias result is compared with the second preset multiple of the tab length tolerance to obtain a second comparison result. Based on the second comparison result, the measuring device's ability to measure tab dimensions is verified to obtain a second verification result. This allows the second verification result to be determined based on a more comprehensive linear bias analysis result, thereby improving the reliability and accuracy of the obtained second verification result.

[0063] In one embodiment, based on the second comparison result, verifying the measurement capability of the measuring device for the tab size to obtain a second verification result includes:

[0064] If the second comparison result satisfies the second verification condition, it is determined that the second verification result is that the measurement capability of the tab size is normal; the second verification condition is that the second linearity is less than or equal to the preset tolerance of the second preset multiple, and each second bias result is less than or equal to the preset tolerance of the second preset multiple;

[0065] If the second comparison result does not meet the verification condition, it is determined that the second verification result is that the measurement capability of the tab size is abnormal.

[0066] In this embodiment, when the second comparison result meets the second verification condition, the second verification result is determined to be that the measurement capability of the tab size is normal; and when the second comparison result does not meet the verification condition, the second verification result is determined to be that the measurement capability of the tab size is abnormal, thereby achieving determination of the second verification result based on a more comprehensive linear bias analysis result, and improving the reliability and accuracy of the obtained second verification result.

[0067] In one embodiment, obtaining a target measurement value obtained by measuring a target tab spacing using a measuring device includes:

[0068] If the calibration method is a stability calibration method, the tab spacing of the second standard part on the conveying roller is measured by the measuring equipment at the preset calibration time to obtain a third measurement value, and the third measurement value is used as the target measurement value; the grayscale of the second standard part is consistent with the grayscale of the tab pole piece.

[0069] In this embodiment, since the grayscale of the second standard part is consistent with the grayscale of the tab pole piece, the edge-finding accuracy of the measuring equipment can be evaluated, and the consistency between the third measurement value and the measurement value obtained by the measuring equipment measuring the tab spacing when producing the tab pole piece can be improved. Then, based on the third measurement value, the measurement capability of the measuring equipment can be verified under the stability verification mode, and the accuracy of the first verification result obtained under the stability verification mode can be improved.

[0070] In one embodiment, determining a calibration index value of a measuring device according to a target measurement value and a target reference value includes:

[0071] Determining a first difference between a third actual length of the tab spacing on the second standard and a third measured value; wherein the target reference value includes the third actual length;

[0072] A calibration index value of the measuring device is determined based on the first difference.

[0073] In this embodiment, by determining the first difference between the third actual length of the tab spacing on the second standard part and the third measured value, the calibration index value of the measuring equipment is determined based on the first difference. Since the third actual length of the tab spacing on the second standard part is used as the target reference value, and since the target reference value is more accurate than the traditional measurement data obtained by manual measurement as a reference value, the calibration index value obtained based on the more accurate target reference value is also more accurate, thereby improving the accuracy of the first calibration result obtained based on the calibration index value.

[0074] In one embodiment, determining a calibration index value of the measuring device according to the first difference includes:

[0075] The first difference is used as a calibration index value of the measuring device.

[0076] In this embodiment, the first difference is directly used as the calibration index value of the measuring device, which makes the determination of the calibration index value faster and simpler, improves the efficiency of obtaining the calibration index value, and further improves the efficiency of obtaining the first calibration result.

[0077] In one embodiment, verifying the measuring capability of the measuring device for the target length based on the first comparison result to obtain a first verification result of the measuring device includes:

[0078] If the first comparison result is that the first difference is less than or equal to the first preset multiple of the tab spacing tolerance, then determining that the first verification result is that the measurement capability of the tab pole piece length is normal;

[0079] If the first comparison result is that the first difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

[0080] In this embodiment, if the first comparison result shows that the first difference is less than or equal to a first preset multiple of the tab spacing tolerance, then the first verification result is determined to be normal measurement capability of the tab pole piece length; if the first comparison result shows that the first difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be abnormal measurement capability of the tab pole piece length. This method is relatively quick and simple, thereby improving the efficiency of obtaining the first verification result.

[0081] In one embodiment, the method further comprises:

[0082] measuring the length of the tab on the second standard component in a target direction using a measuring device to obtain a fourth measurement value of the tab in the target direction; the target direction includes a first direction where the maximum length of the second standard component is located and / or a second direction perpendicular to the first direction;

[0083] Obtaining a second difference between a fourth actual length of the tab on the second standard component and a fourth measured value in the same direction;

[0084] The measurement capability of the measuring device for the tab size is verified based on the second difference corresponding to the tab on the second standard component in the same direction and the tab length tolerance, thereby obtaining a second verification result of the measuring device.

[0085] In this embodiment, the length of the tab on the second standard part in the target direction is measured by a measuring device to obtain a fourth measurement value of the tab in the target direction, and a second difference between the fourth actual length of the tab on the second standard part in the same direction and the fourth measurement value is obtained. Then, based on the corresponding second difference in the same direction of the tab on the second standard part and the tab length tolerance, the measuring ability of the measuring device for the tab size is verified, and a second verification result of the measuring device is obtained, thereby verifying the measuring ability of the measuring device for the tab size.

[0086] In one embodiment, the measurement capability of the measuring device for the tab size is verified based on the second difference corresponding to the tab on the second standard component in the same direction and the tab length tolerance, and a second verification result of the measuring device is obtained, including:

[0087] Comparing the second difference corresponding to the tab on the second standard component in the same direction with the tab length tolerance of the second preset multiple to obtain a third comparison result;

[0088] According to the third comparison result, the measurement capability of the measuring device for the tab size is verified to obtain a second verification result of the measuring device.

[0089] In this embodiment, a third comparison result is obtained by comparing the second difference corresponding to the tab on the second standard part in the same direction with the tab length tolerance of a second preset multiple. Based on the third comparison result, the measuring equipment's ability to measure the tab size is verified, and a second verification result of the measuring equipment is obtained, thereby achieving long-term intermittent verification of the measuring equipment's ability to measure the tab size.

[0090] In one embodiment, based on the third comparison result, verifying the measurement capability of the measuring device for the tab size to obtain a second verification result of the measuring device includes:

[0091] If the third comparison result is that the second difference is less than or equal to the second preset multiple of the tab length tolerance, then the second verification result is determined to be that the measurement capability of the tab size is normal;

[0092] If the third comparison result is that the second difference is greater than the second preset multiple of the tab length tolerance, then the second verification result is determined to be that the measurement capability of the tab size is abnormal.

[0093] In this embodiment, by judging whether the second difference is less than or equal to the second preset multiple of the tab length tolerance, the second verification result is determined to be the measurement capability of the tab size. This judgment method is relatively simple and quick, thereby improving the efficiency of obtaining the second verification result.

[0094] In a second aspect, the present application also provides a battery measurement device calibration device. The device includes:

[0095] A first acquisition module is used to acquire a target measurement value obtained by measuring the target tab spacing using a measuring device;

[0096] A first determination module is used to determine a calibration index value of a measuring device according to a target measurement value and a target reference value;

[0097] The first verification module is used to verify the measuring ability of the measuring equipment for the target length based on the tab spacing tolerance and the verification index value, and obtain the first verification result of the measuring equipment; the target length is the length of the tab pole piece used to produce a battery cell, and the tab spacing tolerance is determined based on the preset total length tolerance corresponding to the target length and the total number of tab spacings on the tab pole piece of the target length.

[0098] In a third aspect, the present application further provides a computer device, which includes a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of any of the above methods when executing the computer program.

[0099] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, which implements the steps of any of the above methods when executed by a processor.

[0100] In a fifth aspect, the present application further provides a computer program product, which includes a computer program that implements the steps of any of the above methods when executed by a processor.

[0101] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0102] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference numerals are used throughout the drawings to represent the same components. In the drawings:

[0103] Figure 1 This is a schematic diagram of the internal structure of a computer device provided in an embodiment of the present application;

[0104] Figure 2 This is one of the flow charts of the battery measurement equipment calibration method provided in the embodiment of the present application;

[0105] Figure 3 This is a flow chart of a first verification result obtaining method provided in an embodiment of the present application;

[0106] Figure 4 This is a flow chart of a method for obtaining a target measurement value in an offline verification mode provided by an embodiment of the present application;

[0107] Figure 5This is a schematic diagram of a measuring device in an offline calibration mode provided in an embodiment of the present application;

[0108] Figure 6 This is a flow chart of a method for obtaining a calibration index value in an offline calibration mode provided in an embodiment of the present application;

[0109] Figure 7 This is a schematic structural diagram of a first standard component provided in an embodiment of the present application;

[0110] Figure 8 This is a schematic diagram of the location of a first standard component provided in an embodiment of the present application;

[0111] Figure 9 This is one of the flow charts of the method for obtaining the calibration index value in the online calibration mode provided in the embodiment of the present application;

[0112] Figure 10 This is the second flow chart of the method for obtaining the calibration index value in the online calibration mode provided in the embodiment of the present application;

[0113] Figure 11 This is a flow chart of a method for calibrating a battery's tab size using an online calibration method provided by an embodiment of the present application;

[0114] Figure 12 1 is a flow chart of a second verification result obtaining method provided in an embodiment of the present application;

[0115] Figure 13 is a structural diagram of a second standard component provided in an embodiment of the present application;

[0116] Figure 14 This is a flow chart of a method for obtaining a calibration index value under a stability calibration method provided in an embodiment of the present application;

[0117] Figure 15 This is a flow chart of a method for calibrating a battery's tab size measurement device in a stability calibration manner provided in an embodiment of the present application;

[0118] Figure 16 1 is a flow chart of a method for calibrating a battery's tab size measurement device under another stability calibration method provided in an embodiment of the present application;

[0119] Figure 17 This is the second flow chart of the battery measurement equipment calibration method provided in the embodiment of the present application;

[0120] Figure 18 It is a structural schematic diagram of a battery measurement equipment calibration device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0121] The following embodiments of the technical solution of the present application will be described in detail with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application and are therefore only examples and are not intended to limit the scope of protection of the present application.

[0122] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0123] In the description of the embodiments of this application, the technical terms "first" and "second" are used only to distinguish different objects and should not be understood to indicate or imply relative importance or implicitly specify the quantity, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, the meaning of "plurality" is more than two, unless otherwise clearly and specifically defined.

[0124] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0125] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0126] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0127] During the production process of the tabs and pole sheets, the pole sheet material can be cut with the help of a pole sheet die-cutting machine to form a tab pole sheet with a tab, and the measuring equipment measures the target length of the tab pole sheet required to produce a battery cell, and the tab pole sheet with the target length is wound into a battery cell. Therefore, the accuracy of the measuring equipment is crucial, and it is necessary to calibrate the accuracy of the measuring equipment.

[0128] Currently, operators manually cut the tabs and pole pieces required to produce a battery cell, place the cut tabs and pole pieces on a measuring table, use a soft ruler or a steel ruler to measure the length of the cut tabs and pole pieces, and compare the measured data with the measured value of the measuring equipment to obtain the calibration result of the measuring equipment for the target length.

[0129] However, since the measurement method is greatly affected by the subjectivity of the measurement personnel, the test method affects the accuracy of the measurement data obtained by the measurement personnel, and the measurement error is large, resulting in the problem of low accuracy of the calibration results obtained by this method.

[0130] In order to solve the above technical problems, the present invention provides a battery measurement device calibration method, which can be applied to Figure 1 The computer device shown may be a terminal. The computer device includes a processor, memory, a communication interface, a display, and an input device connected via a system bus. The processor provides computing and control capabilities. The memory includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and computer programs. The internal memory provides an environment for the operating system and computer programs stored in the non-volatile storage medium. The communication interface of the computer device is used to communicate with an external terminal via wired or wireless communication. Wireless communication can be achieved via Wi-Fi, a mobile cellular network, NFC (near-field communication), or other technologies. When executed by the processor, the computer program implements a method for calibrating a battery measuring device. The display of the computer device may be a liquid crystal display or an electronic ink display. The input device may be a touchscreen layer covering the display, buttons, a trackball, or a touchpad provided on the computer device housing, or an external keyboard, touchpad, or mouse.

[0131] Those skilled in the art will understand that Figure 1 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0132] The present application is described below with reference to an embodiment. In one embodiment, Figure 2 As shown, Figure 2 This is one of the flow charts of the battery measurement equipment calibration method provided in the embodiment of the present application, in which the method is applied to Figure 1 Taking the computer device in the example as an example, the method includes the following steps S201-S203:

[0133] S201, obtaining a target measurement value obtained by measuring a target tab spacing with a measuring device.

[0134] Measuring equipment can include charge-coupled device (CCD) measuring equipment, laser measuring equipment, and other devices. Verification methods can include offline verification, online verification, and stability verification. The offline verification method involves transferring sample tabs (e.g., pole pieces) that have been intercepted by personnel and measured by the measuring equipment but show no abnormalities to a measuring table. An image measuring instrument is then used to measure the length of the sample tabs placed on the table to verify the measuring equipment's ability to measure the length of the tabs. The online verification method involves measuring the tab spacing on a first standard part during the production process of tabs using a tab die-cutting machine to verify the measuring equipment's ability to measure the length of the tabs. The first standard part is a standard part placed between the first and second tab materials, and the tab spacing on the first standard part can have various specifications. The stability verification method involves measuring the tab spacing on a second standard part at a predetermined verification time to verify the measuring equipment's ability to measure the length of the tabs. The second standard part is a standard part mounted on a conveyor roller and can include a tab spacing.

[0135] One target tab spacing corresponds to one target measurement value. In offline verification, one target tab spacing refers to one tab spacing on a sample tab piece, where there can be at least one tab spacing. In online verification, one target tab spacing refers to one tab spacing on the first standard component. In stability verification, one target tab spacing refers to one tab spacing on the second standard component.

[0136] S202: Determine a calibration index value of the measuring device according to the target measurement value and the target reference value.

[0137] The target reference value for the offline calibration method is the value obtained by measuring the length of the sample tab placed on the measuring table using the image measuring instrument. The target reference value for the online calibration method is the actual length of the tab spacing on the first standard part. Each tab spacing on the first standard part corresponds to one actual length and one target measurement value. The target reference value for the stability calibration method is the actual length of the tab spacing on the second standard part. Each tab spacing on the second standard part corresponds to one actual length and one target measurement value.

[0138] In the offline calibration mode, the difference between the target measurement value and the corresponding target reference value can be determined, and the difference is used as the calibration index value of the measurement index.

[0139] In the online verification mode, the deviation result of the actual length of the tab spacing of each size on the first standard part and the corresponding target measurement value can be determined, and the first bias result corresponding to the tab spacing of each size on the first standard part is fitted to obtain the slope, and the first bias result corresponding to the tab spacing of each size on the first standard part and the slope are used as the verification index value.

[0140] In the stability verification mode, the difference between the actual length of the tab spacing on the second standard component and the corresponding target measurement value can be determined, and the difference is used as the verification index value of the measurement index.

[0141] S203, based on the tab spacing tolerance and the calibration index value, calibrate the measuring ability of the measuring equipment for the target length, and obtain the first calibration result of the measuring equipment; the target length is the length of the tab pole piece used to produce a battery cell, and the tab spacing tolerance is determined based on the preset total length tolerance corresponding to the target length and the total number of tab spacings on the tab pole piece of the target length.

[0142] In the embodiment of the present application, the measurement capability can evaluate the accuracy of the target length measured by the measuring device. The greater the measurement capability, the higher the accuracy of the target length measured by the measuring device, that is, the measurement capability is positively correlated with the accuracy of the target length measured by the measuring device.

[0143] At present, the length of the tab and pole piece used in the production of a battery cell is 10 meters to 20 meters, that is, the target length is 10 meters to 20 meters. For example, when the target length is 10 meters, the corresponding preset total length tolerance is 8 mm, and when the target length is 20 meters, the corresponding preset total length tolerance is 10 mm, that is, the preset total length tolerance corresponding to the target length between 10 meters and 20 meters is 8 mm to 10 mm.

[0144] Since the spacing between each tab on the tab pole piece is normally distributed, the target length = L1 + L2 + ... + Ln, where L1 is the first tab spacing on the tab pole piece of the target length, L2 is the second tab spacing on the tab pole piece of the target length, Ln is the nth tab spacing on the tab pole piece of the target length, and n is the total number of tab spacings on the tab pole piece of the target length. By inversely applying the additivity of the normal distribution, the following formula (1) can be obtained:

[0145] (1)

[0146] Since the standard deviation of each tab spacing is basically the same, the following formula (2) can be obtained based on formula (1):

[0147] (2)

[0148] in, Represents the preset total length tolerance, Represents the tab spacing tolerance corresponding to the first tab spacing, Represents the tab spacing tolerance corresponding to the second tab spacing, Represents the tab spacing tolerance corresponding to the nth tab spacing.

[0149] The value of T can be calculated based on formula (2) and used as the tab spacing tolerance. Alternatively, the value of T can be multiplied by a preset coefficient to obtain the value as the tab spacing tolerance.

[0150] Based on the normal distribution properties of the tab spacing, the additivity of the normal distribution is applied inversely to decompose the calibration requirements for the target length into smaller units, namely the tab spacing. Through theoretical deduction and calculation, the evaluation object is changed from the target length to the tab spacing. By determining the tab spacing tolerance, the accuracy of the tab spacing measured by the measuring equipment can be judged, that is, the measurement capability of the measuring equipment for the tab spacing is verified, and then the measurement capability of the measuring equipment for the target length is verified.

[0151] In one possible implementation, the calibration index value can be compared with a first preset multiple of the tab spacing tolerance to obtain a first comparison result. Based on the first comparison result, the measurement capability of the measuring device for the target length is verified to obtain a first calibration result of the measuring device. Exemplarily, in an offline calibration method, if the first comparison result is that the calibration index value is less than or equal to the first preset multiple of the tab spacing tolerance, then the first calibration result is determined to be normal for the measurement capability of the tab length; if the first comparison result is that the calibration index value is greater than the first preset multiple of the tab spacing tolerance, then the first calibration result is determined to be abnormal for the measurement capability of the tab length.

[0152] In another possible implementation, the calibration index value may be divided by a first preset coefficient to obtain a first quotient, and the tab spacing tolerance may be divided by a second preset coefficient to obtain a second quotient. If the first quotient is less than or equal to the second quotient, then the first calibration result is determined to indicate that the measuring device's ability to measure the target length is normal. If the first quotient is greater than the second quotient, then the first calibration result is determined to indicate that the measuring device's ability to measure the target length is abnormal.

[0153] In this embodiment, a target measurement value is obtained by measuring the target tab spacing using a measuring device, and a calibration index value of the measuring device is determined based on the target measurement value and a target reference value. Furthermore, the measuring device's ability to measure the target length is verified based on the tab spacing tolerance and the calibration index value, thereby obtaining a first calibration result for the measuring device. Because this method does not require a surveyor to measure the length of a cut tab pole piece to obtain measurement data and obtain a calibration result for the measuring device, the method instead verifies the measuring device's ability to measure the tab spacing using the determined tab spacing tolerance, thereby further verifying the measuring device's ability to measure the target length. This improves the accuracy of the first calibration result obtained.

[0154] In one embodiment, the tab spacing tolerance is determined based on a ratio of a preset total length tolerance to the square root of the total number of tabs.

[0155] The value of T can be calculated based on formula (2) and used as the tab spacing tolerance. Alternatively, the value of T can be multiplied by a preset coefficient to obtain the value as the tab spacing tolerance.

[0156] In this embodiment, the tab spacing tolerance is determined based on the ratio of the preset total length tolerance to the square root of the total number, so that the determined tab spacing tolerance meets the actual control requirements of the preset total length tolerance. When the tab spacing tolerance meets the actual control requirements of the preset total length tolerance, the measurement equipment's ability to measure the target length is verified, thereby improving the accuracy of the first verification result obtained.

[0157] In one embodiment, the tab spacing tolerance is equal to the ratio.

[0158] In this embodiment, the tab spacing tolerance is equal to the ratio, so that the measuring equipment's ability to measure the target length can be verified when the tab spacing tolerance meets the actual control requirements of the preset total length tolerance, thereby improving the accuracy of the first verification result.

[0159] In one embodiment, Figure 3 As shown, Figure 3 This is a flow chart of a method for obtaining a first calibration result provided in an embodiment of the present application. This embodiment relates to a possible implementation method for calibrating the measuring device's ability to measure a target length based on the tab spacing tolerance and the calibration index value, thereby obtaining a first calibration result of the measuring device. Based on the above embodiment, the above S203 may include the following steps S301-S302:

[0160] S301, comparing the verification index value corresponding to the verification method with a first preset multiple of the tab spacing tolerance to obtain a first comparison result.

[0161] S302: Verify the measuring capability of the measuring device for the target length according to the first comparison result, and obtain a first verification result of the measuring device.

[0162] Taking the offline verification method as an example, in one possible implementation method, if the first comparison result is that the verification index value is less than or equal to the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the length of the tab pole piece is normal; if the first comparison result is that the verification index value is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the length of the tab pole piece is abnormal.

[0163] In another possible implementation, if the first comparison result is that the quotient obtained by dividing the verification index value by the tab spacing tolerance is less than or equal to the first preset multiple, then the first verification result is determined to be that the measurement capability of the tab length is normal; if the first comparison result is that the quotient obtained by dividing the verification index value by the tab spacing tolerance of the first preset multiple is greater than the first preset multiple, then the first verification result is determined to be that the measurement capability of the tab length is abnormal.

[0164] In this embodiment, a first comparison result is obtained by comparing the verification index value corresponding to the verification method with the tab spacing tolerance of a first preset multiple. Based on the first comparison result, the measurement capability of the measuring device for the target length is verified to obtain the first verification result of the measuring device, thereby improving the accuracy of the first verification result.

[0165] In one embodiment, if the verification method is an offline verification method, the target measurement value can be obtained in the following manner. Figure 4 As shown, Figure 4 This is a flow chart of a method for obtaining a target measurement value in an offline calibration mode provided in an embodiment of the present application. The above-mentioned S201, obtaining a target measurement value obtained by measuring the target tab spacing by a measuring device, may include the following steps S401-S402:

[0166] S401, if the calibration mode is an offline calibration mode, a tab pole piece of a preset length of the tab spacing measured by a measuring device is used as a sample tab pole piece; the preset length is less than the target length.

[0167] S402 , using a measurement value obtained by measuring the tab spacing on the sample tab and the pole piece using a measuring device as a target measurement value.

[0168] A sample tab pole piece refers to a tab pole piece of a preset length that has been measured by the measuring equipment with no abnormalities reported during the measurement process. During the production of tab pole pieces by the tab die-cutting machine, the measuring equipment will measure the tab spacing on the produced tab pole pieces. A tab pole piece of a preset length that has been measured by the measuring equipment but has not reported any abnormalities can be used as a sample tab pole piece, and the measurement value corresponding to the tab spacing on the sample tab pole piece can be used as the target measurement value.

[0169] In this embodiment, if the calibration method is an offline calibration method, a tab pole piece with a preset length of tab spacing that has been measured by the measuring device is used as a sample tab pole piece, and the measurement value obtained by the measuring device measuring the tab spacing on the sample tab pole piece is used as the target measurement value. This allows different strategies to be used to obtain target measurement values ​​based on different calibration methods, so that the obtained target measurement values ​​are more consistent with the corresponding calibration method. Furthermore, since the length of the sample tab pole piece is less than or equal to the target length, not only can the cost required to calibrate the measurement capability of the measuring device be reduced, but also it can be achieved by obtaining a smaller number of target measurement values. By using the smaller number of target measurement values ​​and the corresponding target reference value, the calibration index value can be obtained, thereby improving the efficiency of obtaining the calibration index value, and further improving the efficiency of obtaining the first calibration result.

[0170] In one embodiment, when the verification mode is an offline verification mode, the target reference value corresponding to the offline verification mode can be obtained by:

[0171] The tab spacing on the sample tab pole piece on the measuring table is measured by an image measuring instrument to obtain the target reference value corresponding to the offline calibration method; a weight is hung at one end of the sample tab pole piece, and the gravity of the weight is consistent with the tension of the tab die-cutting machine's production machine.

[0172] like Figure 5 As shown, Figure 5 This is a schematic diagram of a measuring device in an off-line calibration mode provided in an embodiment of the present application. Figure 5 The image measuring instrument can be a two-dimensional lens 51. A sample tab pole piece 52 is placed on a measuring table 53, and a weight 54 is hung at one end of the sample tab pole piece 52. The gravity of the weight is consistent with the tension of the production machine of the tab die-cutting machine, so that the measurement environment of the sample tab pole piece is consistent with the measurement environment of the production machine, thereby improving the accuracy of the measurement capability of the measuring equipment in the actual production process of the tab pole piece.

[0173] Due to the current calibration method of manually measuring the length of the tab pole piece placed on the measuring table, the state of the tab pole piece on the measuring table cannot be consistent with the state of the tab pole piece measured by the measuring equipment during the production process of the tab pole piece. Environmental factors such as the tension of the tab pole piece on the measuring table and the gap between the tab pole piece and the measuring table surface are uncontrolled, affecting the accuracy of the current calibration method. However, through this embodiment, the measurement environment of the sample tab pole piece is consistent with the measurement environment of the production machine, thereby making the obtained target reference value more accurate, thereby improving the accuracy and effectiveness of the obtained first calibration result.

[0174] In this embodiment, an image measuring instrument is used to measure the tab spacing of a sample tab and pole piece on a measuring table to obtain a target reference value corresponding to the offline calibration method. Because the gravity of the weight is consistent with the tension of the tab die-cutting machine, the measurement environment of the sample tab and pole piece is consistent with the measurement environment of the production machine, making the target reference value more consistent with the measurement environment of the production machine. The target reference value is more accurate than the traditional reference value using manual measurement data, thereby improving the accuracy of the first calibration result of the measuring device.

[0175] In one embodiment, Figure 6 As shown, Figure 6 This is a flow chart of a method for obtaining a calibration index value in an offline calibration mode provided by an embodiment of the present application. This embodiment relates to a possible implementation method for determining a calibration index value of a measuring device based on a target measurement value and a target reference value. Based on the above embodiment, the above S202 may include the following steps S601-S602:

[0176] S601, determining a measurement difference between a target reference value and a target measurement value corresponding to an offline calibration method.

[0177] For example, if the tab spacing on the sample tab pole piece includes a first tab spacing and a second tab spacing, the first tab spacing corresponds to a first target measurement value and a first target reference value, and the second tab spacing corresponds to a second target measurement value and a second target reference value, then a first measurement difference between the first target reference value and the first target measurement value can be determined, and a second measurement difference between the second target reference value and the second target measurement value can be determined.

[0178] S602: Determine a calibration index value of the measuring device according to the measurement difference.

[0179] In one possible implementation, the measurement difference can be used as a calibration index value of the measuring device. In combination with the above example, the first measurement difference can be used as the first calibration index value, and the second measurement difference can be used as the second calibration index value, that is, the calibration index value in this step includes the first calibration index value and the second calibration index value.

[0180] In another possible implementation, the product of the measurement difference and a preset coefficient may be used as a calibration index value of the measuring device.

[0181] In this embodiment, the measurement difference between the target reference value and the target measurement value corresponding to the offline calibration method is determined, and the calibration index value of the measuring device is determined based on the measurement difference. Because the target reference value is more accurate than traditional reference values ​​using manually measured measurement data, the calibration index value obtained based on the more accurate target reference value is also more accurate, thereby improving the accuracy of the first calibration result obtained based on the calibration index value.

[0182] In one embodiment, the above-mentioned S602, determining the calibration index value of the measuring device according to the measurement difference, can be implemented as follows:

[0183] The measurement difference is used as the calibration index value of the measuring equipment.

[0184] In this embodiment, by directly using the measurement difference as the calibration index value of the measuring device, obtaining the calibration index value is simpler and faster, thereby improving the efficiency of obtaining the first calibration result based on the calibration index value.

[0185] In one embodiment, when the calibration mode is an offline calibration mode, the above-mentioned S302, based on the first comparison result, calibrating the measuring device's ability to measure the target length to obtain a first calibration result of the measuring device, can be implemented as follows:

[0186] If the first comparison result is that the measurement difference is less than or equal to the first preset multiple of the tab spacing tolerance, then determining that the first verification result is that the measurement capability of the tab pole piece length is normal;

[0187] If the first comparison result is that the measurement difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

[0188] It should be noted that, in the offline verification mode, if the measured difference value obtained is one, it is only necessary to compare the measured difference value with the first preset multiple of the tab spacing tolerance. If the measured difference value obtained is multiple, it is necessary to compare each measured difference value with the first preset multiple of the tab spacing tolerance. If each measured difference value is the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be normal in terms of the measurement capability of the tab length. If there is at least one measured difference value that is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be abnormal in terms of the measurement capability of the tab length.

[0189] Combined with the above example, if the first measurement difference and the second measurement difference are both less than or equal to the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the length of the tab pole piece is normal; if the first measurement difference and / or the second measurement difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the length of the tab pole piece is abnormal.

[0190] Due to the low accuracy of the verification results obtained by the current verification method, it is possible that the measuring device does not have an abnormality, but the measurement capability of the measuring device is misjudged to be abnormal and the measuring device is adjusted, resulting in the measurement capability becoming abnormal again after the adjustment. It is also possible that the measuring device is abnormal, but the measurement capability of the measuring device obtained is normal, thus resulting in a large measurement error of the measuring device in actual application. However, the offline verification method provided by the embodiment of the present application obtains a more accurate first verification result. Therefore, based on this first verification result, it is possible to more accurately determine whether the measuring device has an abnormality, thereby reducing the measurement error of the measuring device in actual application.

[0191] In this embodiment, the first comparison result is obtained by directly comparing the size of the measured difference with the first preset multiple of the tab spacing tolerance. This method is relatively quick and simple, thereby improving the efficiency of the first comparison result obtained, thereby improving the efficiency of the first verification result obtained.

[0192] In one embodiment, if the verification method is an online verification method, then the above S201, obtaining the target measurement value obtained by measuring the target tab spacing by the measuring device, can be implemented as follows:

[0193] Measuring the tab spacings of multiple sizes on the first standard component using a measuring device to obtain first measurement values ​​corresponding to the tab spacings of each size;

[0194] Among them, the target measurement value includes the first measurement value corresponding to the tab spacing of each size, the first standard part is a standard part arranged between the first pole piece material and the second pole piece material, the first pole piece material and the second pole piece material are materials on the workbench of the tab die-cutting machine when the tab die-cutting machine is working, and the grayscale of the first standard part is consistent with the grayscale of the tab pole piece.

[0195] Because the measuring device determines the first measurement value of the tab spacing of the first standard component by determining the positions of the two side edges of two adjacent tabs on the first standard component, after the computer device obtains the positions of the two side edges of the two adjacent tabs, the midpoint between the two side edges can be used as a reference position, and the distance between the two reference positions corresponding to the two tabs can be used as the third measurement value. For example, the midpoint between the two side edges of one of the two adjacent tabs can be used as the first reference position, the midpoint between the two side edges of the other of the two adjacent tabs can be used as the second reference position, and the distance between the first reference position and the second reference position can be used as the first measurement value. Therefore, the accuracy of the first measurement value is determined by the edge-finding accuracy of the measuring device. Therefore, the grayscale of the second standard component is kept consistent with the grayscale of the tab pole piece. The closer the first measurement value is to the corresponding actual tab spacing, the higher the edge-finding accuracy of the measuring device. Therefore, the edge-finding accuracy of the measuring device can be evaluated using the first measurement value.

[0196] Figure 7 is a structural diagram of a first standard component provided in an embodiment of the present application, Figure 8 This is a schematic diagram of the location of a first standard component provided in an embodiment of the present application. Figure 7 As shown in FIG, the darker gray area represents the body 71 of the first standard component, and the lighter gray area represents the tabs 72 on the first standard component. The standard component includes tabs of 6 sizes and 5 different tab spacings. Figure 8 As shown, the first standard part 81 is set between the first pole piece material 83 and the second pole piece material 84 through the connecting tape 82. Since the pole tabs are cut out from the first pole piece material 83 and the second pole piece material 84 during the production process of the pole tabs, Figure 8 The figure only shows the state after the tabs 85 have been cut from the first and second pole piece materials 83 and 84. During the production of the tabs and pole pieces, a measuring device 86 measures the tab spacing of multiple dimensions on the first standard component on the workbench of the tab die-cutting machine to obtain corresponding first measurement values. The connecting tape 82 can be an adhesive tape that connects the first standard component 81 to the pole piece material.

[0197] The target tab spacing refers to the tab spacing of multiple sizes on the first standard component, and the multiple tab spacings can cover the tab spacing of various sizes on the current tab pole piece. The grayscale of the first standard component is consistent with the grayscale of the tab pole piece when: the grayscale of the body 71 of the first standard component is the same as the grayscale of the body of the actual tab pole piece, or the grayscale similarity of the body is greater than a preset similarity, and the grayscale of the tab 72 on the first standard component is the same as the grayscale of the tab on the actual tab pole piece, or the grayscale similarity of the tab is greater than a preset similarity.

[0198] like Figure 7As shown, the tab spacing on the first standard component includes five sizes. If each tab spacing of the first standard component is measured once, five first measurement values ​​can be obtained. In this embodiment, the tab spacing of the first standard component can be measured repeatedly a preset number of times. For example, if the preset number of times is 5, 25 first measurement values ​​can be obtained.

[0199] In this embodiment, since the first standard part is a standard part between the materials on the workbench of the tab die-cutting machine when the tab die-cutting machine is working, the measurement environment of the first standard part is consistent with the measurement environment when the tab pole piece is produced, and the grayscale of the first standard part is consistent with the grayscale of the tab pole piece, so that the first standard part can be used to replace the actual tab pole piece, thereby improving the consistency between the first measurement value and the measurement value obtained by the measuring equipment measuring the tab spacing when the tab pole piece is produced, and then realizing the measurement capability of the online calibration measuring equipment based on the first measurement value, and improving the accuracy of the first calibration result obtained under the online calibration mode.

[0200] In one embodiment, Figure 9 As shown, Figure 9 This is one of the flow diagrams of the method for obtaining a calibration index value in an online calibration mode provided by an embodiment of the present application. This embodiment involves a possible implementation method for determining a calibration index value of a measuring device based on a target measurement value and a target reference value. Based on the above embodiment, the above S202 may include the following steps S901-S902:

[0201] S901, determining a deviation result between a first actual length of a tab spacing of each size on a first standard component and a corresponding first measurement value; the target reference value includes the first actual length of the tab spacing of each size on the first standard component.

[0202] The difference between a first actual length of a tab spacing of a size on the first standard component and the corresponding first measured value can be used as a bias result, or the product obtained by multiplying the difference by a preset value can be used as a bias result.

[0203] S902: Determine a calibration index value of a measuring device according to a first bias result corresponding to each tab spacing on a first standard component.

[0204] In a possible implementation, the first bias result corresponding to each tab spacing on the first standard component can be fitted to obtain the first linearity, and the first bias result and the first linearity corresponding to each tab spacing on the first standard component can be used as verification index values.

[0205] In another possible implementation, a first bias result corresponding to the spacing between tabs on the first standard component may be used as a verification index value.

[0206] In this embodiment, the deviation between the first actual length of the tab spacing of each size on the first standard component and the corresponding first measurement value is determined, and a calibration index value of the measuring device is determined based on the first bias result corresponding to each tab spacing on the first standard component. By performing a bias analysis on the first measurement value, the measurement accuracy and consistency of the measuring device for tab spacings of different sizes can be evaluated, thereby improving the reliability of the obtained calibration index value, thereby improving the reliability and accuracy of the first calibration result obtained based on the calibration index value.

[0207] In one embodiment, Figure 10 As shown, Figure 10 This is the second flow chart of the method for obtaining a calibration index value in an online calibration mode provided by an embodiment of the present application. This embodiment relates to a possible implementation method for determining a calibration index value of a measuring device based on a first bias result corresponding to the spacing between tabs on a first standard component. Based on the above embodiment, the above S902 may include the following steps S1001-S1002:

[0208] S1001 , fitting a first bias result corresponding to each tab spacing on a first standard component to obtain a first linearity.

[0209] like Figure 7 As shown, the tab spacing on the first standard component includes five sizes. If each tab spacing of the first standard component is measured once, five first bias results can be obtained. In this embodiment, the tab spacing of the first standard component can be measured repeatedly a preset number of times, for example, 5 times, to obtain 25 first bias results. The first linearity is obtained by fitting based on these 25 first bias results.

[0210] The first linearity is obtained by fitting the first bias results corresponding to the tab spacings on the first standard part. The first linearity can reflect the changing trend of the accuracy of the measuring device in different measurement ranges. The linearity describes the law of the change of the bias result with the reference value. If the linearity is good, it means that the bias result of the measurement system is relatively stable within the entire measurement range and is approximately linear with the reference value. This means that the accuracy of the measuring device at different measurement points is relatively consistent and will not produce significant deviation changes due to the size of the reference value. Among them, the different measurement ranges in this embodiment refer to tab spacings of different sizes.

[0211] S1002 , using a first bias result and a first linearity corresponding to each tab spacing on a first standard component as a calibration index value.

[0212] In this embodiment, the first linearity is obtained by fitting the first bias results corresponding to the spacing between each tab on the first standard part, and the first bias results and the first linearity corresponding to the spacing between each tab on the first standard part are used as verification index values, so that the results obtained by linear bias analysis are used as verification index values, so that the verification index values ​​can cover the changing trends of the spacing between tabs of different sizes, and verify the measurement accuracy and reliability of the measurement equipment for the spacing between tabs of different sizes.

[0213] In one embodiment, when the verification mode is an online verification mode, the above-mentioned S302, based on the first comparison result, verifies the measurement capability of the measuring device for the target length to obtain the first verification result of the measuring device, which can be achieved by the following method:

[0214] If the first comparison result satisfies the first verification condition, it is determined that the first verification result is that the measurement capability of the length of the tab pole piece is normal; the first verification condition is that the first linearity is less than or equal to the first preset multiple of the tab spacing tolerance, and each first bias result is less than or equal to the first preset multiple of the tab spacing tolerance;

[0215] If the first comparison result does not meet the first verification condition, it is determined that the first verification result is that the measurement capability of the length of the tab and the pole piece is abnormal.

[0216] The online verification method provided in the embodiment of the present application can reduce the cost required to verify the measurement capability of the measuring equipment compared to the current verification method based on measurement data of manual measurement, and the first verification result obtained is relatively accurate. Therefore, based on the first verification result, it is possible to more accurately determine whether there is an abnormality in the measuring equipment, thereby reducing the measurement error of the measuring equipment in actual application.

[0217] In this embodiment, by judging whether the first linearity is less than or equal to the first preset multiple of the tab spacing tolerance, and whether each first bias result is less than or equal to the first preset multiple of the tab spacing tolerance, the first verification result can be determined based on a more comprehensive verification index value, thereby improving the reliability and accuracy of the first verification result obtained, and reducing the cost required for verification.

[0218] In one embodiment, when the calibration method is an online calibration method, the size of the tab on the first standard component can also be measured by a measuring device to determine the measuring capability of the measuring device for the tab size. Figure 11 As shown, Figure 11 1 is a flow chart of a method for calibrating a battery tab size measurement device in an online calibration manner provided by an embodiment of the present application. The method may include the following steps S1101-S1103:

[0219] S1101, measuring the length of each tab of each size on the first standard component in the target direction by a measuring device to obtain a second measurement value of each tab of each size in the target direction.

[0220] The target direction includes a first direction where the maximum length of the first standard component is located and / or a second direction perpendicular to the first direction.

[0221] like Figure 7 and Figure 8 As shown, the number of tabs on the first standard component is 6, and the dimensions of each tab include a length in a first direction and a length in a second direction. The length of each tab in the first direction and / or the length of each tab in the second direction can be measured using a measuring device.

[0222] S1102 , obtaining a second deviation result between a second actual length of a tab of each size on the first standard component and a second measured value in the same direction.

[0223] The same direction in this step refers to the first direction or the second direction.

[0224] Taking S1101 as an example, measuring the length of a tab in a first direction, step S1101 can obtain a second measured value of the tab's length in the first direction. The difference between the second actual length of the tab in the first direction and the second measured value is determined, and this difference is used as a second bias result corresponding to the tab. Similar to the above-described acquisition of the first bias result, multiple second bias results can be obtained for the same tab, based on multiple measurements in the same direction.

[0225] S1103 , based on the second deviation results corresponding to the tabs of various sizes in the same direction and the tab length tolerance, calibrate the measuring device's ability to measure the tab size, and obtain a second calibration result of the measuring device.

[0226] In this step, the measuring capability of the measuring device for the length in the direction can be verified based on multiple second bias results of multiple measurements of tabs of all sizes in the same direction and the corresponding tab length tolerance in the direction to obtain a second verification result.

[0227] In this embodiment, a measuring device measures the length of each tab size on a first standard component in a target direction, obtaining a second measurement value for each tab size in the target direction. A second deviation between the second actual length of each tab size on the first standard component in the same direction and the second measurement value is obtained. Based on the second deviation result corresponding to each tab size in the same direction and the tab length tolerance, the measuring device's ability to measure tab size is verified, resulting in a second verification result for the measuring device. By performing a bias analysis on the second measurement value, the measuring device's measurement accuracy and consistency for tabs of different sizes can be evaluated, thereby improving the reliability and accuracy of the obtained second verification result.

[0228] In one embodiment, when the verification mode is an online verification mode, such as Figure 12 As shown, Figure 12 : This is a flow chart of a second verification result acquisition method provided in an embodiment of the present application. The above-mentioned S1103 may include the following steps S1201-S1203:

[0229] S1201 , fitting corresponding second bias results in the same direction to obtain a second linearity.

[0230] S1202 , comparing the second linearity with a second preset multiple of the tab length tolerance, and comparing each second bias result with a second preset multiple of the tab length tolerance, to obtain a second comparison result.

[0231] In one possible implementation, the difference between each second bias result and the second preset multiple of the tab length tolerance can be determined, and based on the difference, it can be judged whether each second bias result is less than or equal to the second preset multiple of the tab length tolerance to obtain a second comparison result.

[0232] In another possible manner, the quotient of each second bias result and the second preset multiple of the tab length tolerance can be determined, and whether each second bias result is less than or equal to the second preset multiple of the tab length tolerance can be determined based on the quotient.

[0233] In the same way as comparing the second bias result with the second preset multiple of the tab length tolerance, it is possible to determine whether the second linearity is less than or equal to the second preset multiple of the tab length tolerance based on the difference or quotient between the second linearity and the second preset multiple of the tab length tolerance.

[0234] S1203: Verify the measurement capability of the measuring device for the tab size based on the second comparison result to obtain a second verification result.

[0235] If the second comparison result meets the second verification condition, the second verification result is determined to be that the measurement capability of the tab size is normal; the second verification condition is that the second linearity is less than or equal to the preset tolerance of the second preset multiple, and each second bias result is less than or equal to the preset tolerance of the second preset multiple; if the second comparison result does not meet the verification condition, the second verification result is determined to be that the measurement capability of the tab size is abnormal.

[0236] In this embodiment, a second linearity is obtained by fitting corresponding second bias results in the same direction, and the second linearity is compared with a second preset multiple of the tab length tolerance. Furthermore, each second bias result is compared with the second preset multiple of the tab length tolerance to obtain a second comparison result. Based on the second comparison result, the measuring device's ability to measure tab dimensions is verified to obtain a second verification result. This allows the second verification result to be determined based on a more comprehensive linear bias analysis result, thereby improving the reliability and accuracy of the obtained second verification result.

[0237] In one embodiment, the above-mentioned S1203, based on the second comparison result, verifies the measurement capability of the measuring device for the tab size to obtain the second verification result, which can be achieved by the following method:

[0238] If the second comparison result satisfies the second verification condition, it is determined that the second verification result is that the measurement capability of the tab size is normal; the second verification condition is that the second linearity is less than or equal to the preset tolerance of the second preset multiple, and each second bias result is less than or equal to the preset tolerance of the second preset multiple;

[0239] If the second comparison result does not meet the verification condition, it is determined that the second verification result is that the measurement capability of the tab size is abnormal.

[0240] It should be noted that in the online verification mode, the first verification result and the second verification result can be obtained. Therefore, the verification of the measurement capability of the measuring device in the online verification mode is more comprehensive.

[0241] In this embodiment, when the second comparison result meets the second verification condition, the second verification result is determined to be that the measurement capability of the tab size is normal; and when the second comparison result does not meet the verification condition, the second verification result is determined to be that the measurement capability of the tab size is abnormal, thereby achieving determination of the second verification result based on a more comprehensive linear bias analysis result, and improving the reliability and accuracy of the obtained second verification result.

[0242] In one embodiment, if the verification method is a stability verification method, then the above-mentioned S201, obtaining the target measurement value obtained by measuring the target tab spacing by the measuring device, can be implemented as follows:

[0243] If the calibration method is a stability calibration method, the tab spacing of the second standard part on the conveying roller is measured by the measuring equipment at the preset calibration time to obtain a third measurement value, and the third measurement value is used as the target measurement value; the grayscale of the second standard part is consistent with the grayscale of the tab pole piece.

[0244] like Figure 13 As shown, Figure 13 : This is a schematic diagram of the structure of a second standard component provided in an embodiment of the present application. The darker gray area represents the body 131 of the second standard component, and the lighter gray area represents the tab 132 on the second standard component. The standard component includes two tabs and one tab spacing. The grayscale of the second standard component is consistent with the grayscale of the tab pole piece, which means that the grayscale of the body 131 of the second standard component is the same as the grayscale of the body of the actual tab pole piece, or the grayscale similarity of the body is greater than a preset similarity, and the grayscale of the tab 132 on the second standard component is the same as the grayscale of the tab on the actual tab pole piece, or the grayscale similarity of the tab is greater than a preset similarity.

[0245] The second standard part can be arranged in a circular manner on the conveying roller, and the preset verification time is, for example, 10 o'clock and 22 o'clock every day. At the preset verification time, the tab spacing of the second standard part on the conveying roller can be measured by the measuring equipment to obtain a third measurement value, and the third measurement value is used as the target measurement value.

[0246] Since the grayscale of the second standard part is kept consistent with the grayscale of the tab pole piece, the closer the third measurement value is to the corresponding actual tab spacing, the higher the edge-finding accuracy of the measuring device is, and the edge-finding accuracy of the measuring device is evaluated by the third measurement value.

[0247] In this embodiment, since the grayscale of the second standard part is consistent with the grayscale of the tab pole piece, the edge-finding accuracy of the measuring equipment can be evaluated, and the consistency between the third measurement value and the measurement value obtained by the measuring equipment measuring the tab spacing when producing the tab pole piece can be improved. Then, based on the third measurement value, the measurement capability of the measuring equipment can be verified under the stability verification mode, and the accuracy of the first verification result obtained under the stability verification mode can be improved.

[0248] In one embodiment, when the verification mode is a stability verification mode, such as Figure 14 As shown, Figure 14 This is a flow chart of a method for obtaining a calibration index value under a stability calibration method provided in an embodiment of the present application. This embodiment relates to a possible implementation method for determining a calibration index value of a measuring device based on a target measurement value and a target reference value. Based on the above embodiment, the above S202 may include the following steps S1401-S1402:

[0249] S1401 , determining a first difference between a third actual length of the tab spacing on a second standard component and a third measured value; the target reference value includes the third actual length.

[0250] S1402: Determine a calibration index value of the measuring device according to the first difference.

[0251] In a possible implementation, the first difference may be used as a calibration index value of the measuring device.

[0252] In another possible implementation, a result obtained by multiplying the first difference by a preset value may be used as a calibration index value of the measuring device.

[0253] In this embodiment, by determining the first difference between the third actual length of the tab spacing on the second standard part and the third measured value, the calibration index value of the measuring equipment is determined based on the first difference. Since the third actual length of the tab spacing on the second standard part is used as the target reference value, and since the target reference value is more accurate than the traditional measurement data obtained by manual measurement as a reference value, the calibration index value obtained based on the more accurate target reference value is also more accurate, thereby improving the accuracy of the first calibration result obtained based on the calibration index value.

[0254] In one embodiment, the above-mentioned S1402, determining the calibration index value of the measuring device according to the first difference, can be implemented as follows:

[0255] The first difference is used as a calibration index value of the measuring device.

[0256] In this embodiment, the first difference is directly used as the calibration index value of the measuring device, which makes the determination of the calibration index value faster and simpler, improves the efficiency of obtaining the calibration index value, and further improves the efficiency of obtaining the first calibration result.

[0257] In one embodiment, when the calibration mode is a stability calibration mode, the above-mentioned S302, based on the first comparison result, calibrating the measuring device's ability to measure the target length to obtain a first calibration result of the measuring device, can be implemented as follows:

[0258] If the first comparison result is that the first difference is less than or equal to the first preset multiple of the tab spacing tolerance, then determining that the first verification result is that the measurement capability of the tab pole piece length is normal;

[0259] If the first comparison result is that the first difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

[0260] In one possible implementation, a difference between the first difference and a first preset multiple of the tab spacing tolerance can be determined, and based on the difference, it can be determined whether the first difference is less than or equal to the first preset multiple of the tab spacing tolerance. If the difference is less than or equal to 0, it can be determined that the first difference is less than or equal to the first preset multiple of the tab spacing tolerance. In this case, it can be determined that the first verification result indicates that the measurement capability of the tab pole piece length is normal. If the difference is greater than 0, it can be determined that the first difference is greater than the first preset multiple of the tab spacing tolerance. In this case, it can be determined that the first verification result indicates that the measurement capability of the tab pole piece length is abnormal.

[0261] In another possible approach, a quotient of the first difference and the tab spacing tolerance of a first preset multiple can be determined, and based on the quotient, it can be determined whether each second bias result is less than or equal to the tab length tolerance of the second preset multiple. If the quotient is greater than 0 and less than or equal to 1, it can be determined that the first difference is less than or equal to the tab spacing tolerance of the first preset multiple. In this case, it can be determined that the first verification result indicates that the measurement capability of the tab length is normal. If the quotient is greater than 1, it can be determined that the first difference is greater than the tab spacing tolerance of the first preset multiple. In this case, it can be determined that the first verification result indicates that the measurement capability of the tab length is abnormal.

[0262] In this embodiment, if the first comparison result shows that the first difference is less than or equal to a first preset multiple of the tab spacing tolerance, then the first verification result is determined to be normal measurement capability of the tab pole piece length; if the first comparison result shows that the first difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be abnormal measurement capability of the tab pole piece length. This method is relatively quick and simple, thereby improving the efficiency of obtaining the first verification result.

[0263] In one embodiment, under the stability verification mode, if the first verification result obtained at a certain preset verification time is that the measurement capability of the length of the tab pole piece is abnormal, it means that there may be a problem with the measuring equipment or the components of the tab die-cutter. At this time, the tab die-cutter can be controlled to stop running, and the cause of the problem can be analyzed and located in a timely manner. For example, when performing a stability verification at 10:00 on April 10, 2025, if the first verification result obtained is that the measurement capability of the length of the tab pole piece is abnormal, the tab die-cutter can be controlled to stop running in a timely manner after the abnormality is determined, and the cause of the problem can be analyzed and located in a timely manner, thereby improving the long-term effectiveness of the measuring equipment in measuring products.

[0264] In one embodiment, when the calibration method is a stability calibration method, the size of the tab on the second standard can also be measured by a measuring device to determine the measuring capability of the measuring device for the tab size. Figure 15 As shown, Figure 1515 is a flow chart of a method for calibrating a battery tab size measurement device in a stability calibration mode provided in an embodiment of the present application. The method may include the following steps S1501-S1503:

[0265] S1501: Measure the length of the tab on the second standard component in a target direction using a measuring device to obtain a fourth measurement value of the tab in the target direction.

[0266] The target direction includes a first direction where the maximum length of the second standard component is located and / or a second direction perpendicular to the first direction.

[0267] The length of the tab on the second standard component in the first direction and / or the length of the tab in the second direction can be measured by a measuring device. The fourth measurement value can be obtained by measuring the length of at least one tab on the second standard component in the target direction by the measuring device.

[0268] S1502: Obtain a second difference between a fourth actual length of a tab on a second standard component in the same direction and a fourth measured value.

[0269] In this step, the "same direction" refers to the first direction or the second direction. The measuring device can measure the length of a tab on the second standard component in one direction. For example, if the measuring device measures the length of a tab on the second standard component in the first direction and obtains a fourth measurement value A, then in this step, a second difference A between the fourth actual length of the tab in the first direction and the fourth measurement value A can be obtained. The measurement difference corresponding to the first direction can be used to verify the measuring device's ability to measure the tab length in the first direction.

[0270] As another example, if the measuring device measures the length of a tab on the second standard in the second direction to obtain a fourth measurement value B, then in this step, a second difference B between a fourth actual length of the tab in the second direction and the fourth measurement value B can be obtained. The measurement difference corresponding to the second direction can be used to verify the measuring device's ability to measure the length of the tab in the second direction.

[0271] The measuring device may also measure the length of a tab on the second standard component in both the first direction and the second direction, thereby obtaining fourth measurement values ​​corresponding to the two directions. For example, the length of a tab on the second standard component in the first direction may be measured to obtain a fourth measurement value A, and the length of the tab in the second direction may be measured to obtain a fourth measurement value B, thereby obtaining a second difference A and a second difference B.

[0272] S1503 , based on the second difference corresponding to the tab on the second standard component in the same direction and the tab length tolerance, calibrate the measuring device's ability to measure the tab size, and obtain a second calibration result of the measuring device.

[0273] In one possible implementation, the second difference corresponding to the tab on the second standard part in the same direction can be compared with the tab length tolerance of a second preset multiple to obtain a third comparison result. Based on the third comparison result, the measuring device's ability to measure the tab size is verified to obtain a second verification result of the measuring device.

[0274] For example, if the second difference A and the second difference B are obtained in S1502, the second difference A can be compared with the second preset multiple of the tab length tolerance, and the second difference B can be compared with the second preset multiple of the tab length tolerance to obtain a third comparison result. If the third comparison result shows that the second difference A is less than or equal to the second preset multiple of the tab length tolerance, and the second difference B is less than or equal to the second preset multiple of the tab length tolerance, then the second verification result can be determined to be normal for the tab size measurement capability.

[0275] If the third comparison result is that there is at least one second difference between the second difference A and the second difference B that is greater than the second preset multiple of the tab length tolerance, it can be determined that the second verification result is an abnormality in the measurement capability of the tab size.

[0276] In another possible implementation, a quotient of a second difference corresponding to the tab on the second standard component in the same direction and the tab length tolerance is determined. Based on a comparison result of the quotient and a second preset multiple, the measuring device's ability to measure the tab size is verified to obtain a second verification result of the measuring device. For example, if a second difference A and a second difference B are obtained in S1502, a quotient A of the second difference A and the tab length tolerance can be determined, as well as a quotient B of the second difference B and the tab length tolerance can be determined. If the comparison result shows that both quotient A and quotient B are less than or equal to the second preset multiple, then the second verification result can be determined to indicate that the tab size measurement capability is normal. If the comparison result shows that at least one of quotient A and quotient B is greater than the second preset multiple, then the second verification result can be determined to indicate that the tab size measurement capability is abnormal.

[0277] It should be noted that in the stability verification mode, the first verification result and the second verification result can be obtained. Therefore, the verification of the measurement capability of the measuring device in the stability verification mode is more comprehensive.

[0278] In this embodiment, the length of the tab on the second standard part in the target direction is measured by a measuring device to obtain a fourth measurement value of the tab in the target direction, and a second difference between the fourth actual length of the tab on the second standard part in the same direction and the fourth measurement value is obtained. Then, based on the corresponding second difference in the same direction of the tab on the second standard part and the tab length tolerance, the measuring ability of the measuring device for the tab size is verified, and a second verification result of the measuring device is obtained, thereby verifying the measuring ability of the measuring device for the tab size.

[0279] In one embodiment, Figure 16 As shown, Figure 16 This is a flow chart of a method for calibrating a measuring device for measuring the tab size of a battery under another stability calibration method provided in an embodiment of the present application. The above-mentioned S1503, based on the second difference corresponding to the tabs on the second standard in the same direction and the tab length tolerance, calibrates the measuring device's ability to measure the tab size, and obtains a second calibration result of the measuring device, which may include the following steps S1601-S1602:

[0280] S1601: Compare the second difference corresponding to the tab on the second standard component in the same direction with the tab length tolerance of the second preset multiple to obtain a third comparison result.

[0281] S1602: Based on the third comparison result, verify the measurement capability of the measuring device for the tab size to obtain a second verification result of the measuring device.

[0282] For example, if the second difference A and the second difference B are obtained in S1502, the second difference A can be compared with the second preset multiple of the tab length tolerance, and the second difference B can be compared with the second preset multiple of the tab length tolerance to obtain a third comparison result. If the third comparison result shows that the second difference A is less than or equal to the second preset multiple of the tab length tolerance, and the second difference B is less than or equal to the second preset multiple of the tab length tolerance, then the second verification result can be determined to be normal for the tab size measurement capability.

[0283] If the third comparison result is that at least one of the second difference A and the second difference B is greater than the second preset multiple of the tab length tolerance, it can be determined that the second verification result is abnormal in the measurement capability of the tab size.

[0284] It should be noted that the difference or quotient between the second difference and the second preset multiple of the tab length tolerance can be determined, and based on the difference or quotient, it is determined whether the second difference is less than or equal to the second preset multiple of the tab length tolerance.

[0285] In this embodiment, a third comparison result is obtained by comparing the second difference corresponding to the tab on the second standard part in the same direction with the tab length tolerance of a second preset multiple. Based on the third comparison result, the measuring equipment's ability to measure the tab size is verified, and a second verification result of the measuring equipment is obtained, thereby achieving long-term intermittent verification of the measuring equipment's ability to measure the tab size.

[0286] In one embodiment, the above-mentioned S1602, based on the third comparison result, verifies the measurement capability of the measuring device for the tab size to obtain the second verification result of the measuring device, which can be achieved by the following method:

[0287] If the third comparison result is that the second difference is less than or equal to the second preset multiple of the tab length tolerance, then the second verification result is determined to be that the measurement capability of the tab size is normal;

[0288] If the third comparison result is that the second difference is greater than the second preset multiple of the tab length tolerance, then the second verification result is determined to be that the measurement capability of the tab size is abnormal.

[0289] In one embodiment, under the stability verification mode, if the second verification result obtained at a predetermined verification time is that the measurement capability of the tab size is abnormal, it means that there may be a problem with the measuring equipment or a component of the tab die-cutter. In this case, the tab die-cutter can be controlled to stop operation, and the cause of the problem can be promptly analyzed and located. For example, during the stability verification at 10:00 on April 10, 2025, if the second verification result obtained is that the measurement capability of the tab size is abnormal, the tab die-cutter can be controlled to stop operation in a timely manner after the abnormality is determined, and the cause of the problem can be promptly analyzed and located, thereby improving the long-term effectiveness of the measuring equipment in product measurement.

[0290] In this embodiment, by judging whether the second difference is less than or equal to the second preset multiple of the tab length tolerance, the second verification result is determined to be the measurement capability of the tab size. This judgment method is relatively simple and quick, thereby improving the efficiency of obtaining the second verification result.

[0291] In one embodiment, in combination Figure 17 In order to explain the overall process of the battery measurement equipment calibration method, Figure 17 This is a second flow chart of a battery measurement device calibration method provided in an embodiment of the present application. The method includes the following steps S1701-S1705:

[0292] S1701, determine the ratio of the preset total length tolerance to the square root of the total number of tabs, and use the ratio as the tab spacing tolerance.

[0293] S1702: Obtain a target measurement value obtained by measuring the target tab spacing using a measuring device.

[0294] S1703: Determine a calibration index value of the measuring device according to the target measurement value and the target reference value.

[0295] S1704: Compare the verification index value corresponding to the verification method with the tab spacing tolerance of a first preset multiple to obtain a first comparison result.

[0296] S1705 , based on the first comparison result, verify the measuring capability of the measuring device for the target length, and obtain a first verification result of the measuring device.

[0297] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0298] Based on the same inventive concept, embodiments of the present application also provide a battery measuring device calibration apparatus for implementing the aforementioned battery measuring device calibration method. The solution provided by this apparatus is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more battery measuring device calibration apparatus embodiments provided below can be found in the limitations of the battery measuring device calibration method described above and will not be further elaborated here.

[0299] In one embodiment, Figure 18 As shown, Figure 18 1800 is a schematic structural diagram of a battery measurement device calibration device provided in an embodiment of the present application. The device 1800 includes:

[0300] The first acquisition module 1801 is used to obtain a target measurement value obtained by measuring the target tab spacing using a measuring device;

[0301] A first determining module 1802 is configured to determine a calibration index value of a measuring device according to a target measurement value and a target reference value;

[0302] The first verification module 1803 is used to verify the measurement capability of the measuring equipment for the target length according to the tab spacing tolerance and the verification index value, and obtain the first verification result of the measuring equipment; the target length is the length of the tab pole piece used to produce a battery cell, and the tab spacing tolerance is determined based on the preset total length tolerance corresponding to the target length and the total number of tab spacings on the tab pole piece of the target length.

[0303] In one embodiment, the tab spacing tolerance is determined based on a ratio of a preset total length tolerance to the square root of the total number of tabs.

[0304] In one embodiment, the tab spacing tolerance is equal to the ratio.

[0305] In one embodiment, the first verification module 1803 includes:

[0306] A first comparison unit is configured to compare a verification index value corresponding to the verification method with a first preset multiple of the tab spacing tolerance to obtain a first comparison result;

[0307] The first verification unit is used to verify the measurement capability of the measuring device for the target length according to the first comparison result, and obtain a first verification result of the measuring device.

[0308] In one embodiment, the first acquisition module 1801 is specifically used to, if the verification method is an offline verification method, use the tab pole piece with a preset length of the tab spacing that has been measured by the measuring device as a sample tab pole piece; use the measurement value obtained by the measuring device measuring the tab spacing on the sample tab pole piece as the target measurement value; the preset length is less than or equal to the target length.

[0309] In one embodiment, the first acquisition module 1801 is also used to measure the tab spacing on the sample tab pole piece on the measuring table using an image measuring instrument to obtain a target reference value corresponding to the offline verification method; a weight is hung at one end of the sample tab pole piece, and the gravity of the weight is consistent with the tension of the production machine of the tab die-cutting machine.

[0310] In one embodiment, the first determining module 1802 includes:

[0311] A first determining unit is used to determine a measurement difference between a target reference value and a target measurement value corresponding to an offline verification method;

[0312] The second determining unit is configured to determine a calibration index value of the measuring device according to the measurement difference.

[0313] In one embodiment, the second determining unit is specifically configured to use the measurement difference as a calibration index value of the measuring device.

[0314] In one embodiment, the first verification unit is specifically configured to determine that the first verification result is that the measurement capability of the tab pole piece length is normal if the first comparison result is that the measurement difference is less than or equal to a first preset multiple of the tab spacing tolerance;

[0315] If the first comparison result is that the measurement difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

[0316] In one embodiment, the first acquisition module 1801 is specifically configured to measure the tab spacings of multiple sizes on the first standard component using a measuring device to obtain first measurement values ​​corresponding to the tab spacings of each size if the verification method is an online verification method;

[0317] Among them, the target measurement value includes the first measurement value corresponding to the tab spacing of each size, the first standard part is a standard part arranged between the first pole piece material and the second pole piece material, the first pole piece material and the second pole piece material are materials on the workbench of the tab die-cutting machine when the tab die-cutting machine is working, and the grayscale of the first standard part is consistent with the grayscale of the tab pole piece.

[0318] In one embodiment, the first determining module 1802 includes:

[0319] a third determining unit, configured to determine a deviation between a first actual length of a tab spacing of each size on the first standard component and a corresponding first measurement value; wherein the target reference value includes the first actual length of the tab spacing of each size on the first standard component;

[0320] The fourth determining unit is configured to determine a calibration index value of the measuring device according to a first bias result corresponding to the spacing between tabs on the first standard component.

[0321] In one embodiment, the fourth determining unit is specifically configured to fit a first bias result corresponding to each tab spacing on the first standard component to obtain a first linearity;

[0322] The first bias result and the first linearity corresponding to the spacing between the tabs on the first standard component are used as calibration index values.

[0323] In one embodiment, the first verification unit is specifically configured to determine that the first verification result is that the measurement capability of the length of the tab pole piece is normal if the first comparison result satisfies a first verification condition; the first verification condition is that the first linearity is less than or equal to a first preset multiple of the tab spacing tolerance, and each first bias result is less than or equal to the first preset multiple of the tab spacing tolerance;

[0324] If the first comparison result does not meet the first verification condition, it is determined that the first verification result is that the measurement capability of the length of the tab and the pole piece is abnormal.

[0325] In one embodiment, the apparatus further comprises:

[0326] a second acquisition module, configured to measure the length of each tab of each size on the first standard component in a target direction using a measuring device to obtain a second measurement value of each tab of each size in the target direction; the target direction includes a first direction in which the maximum length of the first standard component is located and / or a second direction perpendicular to the first direction;

[0327] A third acquisition module is configured to obtain a second deviation result between a second actual length of a tab of each size on the first standard component and a second measurement value in the same direction;

[0328] The second verification module is further used to verify the measurement capability of the measuring device for the tab size according to the second deviation results corresponding to the tabs of various sizes in the same direction and the tab length tolerance, and obtain a second verification result of the measuring device.

[0329] In one embodiment, the second verification module includes:

[0330] A fitting unit, configured to fit the corresponding second bias results in the same direction to obtain a second linearity;

[0331] a second comparing unit, configured to compare the second linearity with a second preset multiple of the tab length tolerance, and to compare each second bias result with the second preset multiple of the tab length tolerance, to obtain a second comparison result;

[0332] The second verification unit is used to verify the measurement capability of the measuring device for the tab size according to the second comparison result to obtain a second verification result.

[0333] In one embodiment, the second verification unit is specifically configured to determine that the second verification result is that the measurement capability of the tab size is normal if the second comparison result satisfies a second verification condition; the second verification condition is that the second linearity is less than or equal to a preset tolerance of a second preset multiple, and each second bias result is less than or equal to a preset tolerance of the second preset multiple;

[0334] If the second comparison result does not meet the verification condition, it is determined that the second verification result is that the measurement capability of the tab size is abnormal.

[0335] In one embodiment, the first acquisition module 1801 is specifically used to measure the tab spacing of the second standard part on the conveying roller through a measuring device at a preset verification time if the verification method is a stability verification method, and to obtain a third measurement value, and use the third measurement value as the target measurement value; the grayscale of the second standard part is consistent with the grayscale of the tab pole piece.

[0336] In one embodiment, the first determining module 1802 includes:

[0337] a fifth determining unit, configured to determine a first difference between a third actual length of the tab spacing on the second standard component and a third measured value; wherein the target reference value includes the third actual length;

[0338] A sixth determining unit is configured to determine a calibration index value of the measuring device according to the first difference.

[0339] In one embodiment, the sixth determining unit is specifically configured to use the first difference as a calibration index value of the measuring device.

[0340] In one embodiment, the first verification unit is specifically configured to determine that the first verification result is that the measurement capability of the tab pole piece length is normal if the first comparison result is that the first difference is less than or equal to a first preset multiple of the tab spacing tolerance;

[0341] If the first comparison result is that the first difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

[0342] In one embodiment, the apparatus further comprises:

[0343] a fourth acquisition module, configured to measure the length of the tab on the second standard component in a target direction using a measuring device to obtain a fourth measurement value of the tab in the target direction; the target direction includes a first direction in which the maximum length of the second standard component is located and / or a second direction perpendicular to the first direction;

[0344] A fifth acquisition module, configured to acquire a second difference between a fourth actual length of the tab on the second standard component in the same direction and a fourth measured value;

[0345] The third verification module is used to verify the measurement capability of the measuring device for the tab size according to the second difference corresponding to the tab on the second standard component in the same direction and the tab length tolerance, and obtain a second verification result of the measuring device.

[0346] In one embodiment, the third verification module includes:

[0347] a third comparing unit, configured to compare a second difference value corresponding to the tabs on the second standard component in the same direction with a second preset multiple of the tab length tolerance to obtain a third comparison result;

[0348] The third verification unit is used to verify the measurement capability of the measuring device for the tab size according to the third comparison result, and obtain a second verification result of the measuring device.

[0349] In one embodiment, the third verification unit is specifically used to determine that the second verification result is that the measurement capability of the tab size is normal if the third comparison result is that the second difference is less than or equal to the second preset multiple of the tab length tolerance; if the third comparison result is that the second difference is greater than the second preset multiple of the tab length tolerance, then determine that the second verification result is that the measurement capability of the tab size is abnormal.

[0350] Each module in the battery measurement device calibration apparatus described above can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0351] In one embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory. When the processor executes the computer program, the technical solution in the embodiment of the battery measurement device calibration method described above in the present application is implemented. The implementation principle and technical effects are similar and will not be repeated here.

[0352] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the technical solution of the above-mentioned battery measurement equipment calibration method embodiment of the present application is implemented. The implementation principle and technical effect are similar and will not be repeated here.

[0353] In one embodiment, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the technical solution in the embodiment of the battery measurement device calibration method described above in the present application is implemented. The implementation principle and technical effects are similar and will not be repeated here.

[0354] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties.

[0355] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), data processing logic devices based on quantum computing, and the like.

[0356] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0357] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A battery measurement equipment calibration method, characterized in that: The method comprises: Obtaining a target measurement value obtained by measuring the target tab spacing using the measuring device; Determining a calibration index value of the measuring device according to the target measurement value and the target reference value; Verify the measuring capability of the measuring device for the target length according to the tab spacing tolerance and the verification index value, and obtain a first verification result of the measuring device; the target length is the length of the tab pole piece used to produce one battery cell, and the tab spacing tolerance is determined based on a preset total length tolerance corresponding to the target length and the total number of tab spacings on the tab pole piece of the target length; The step of verifying the measuring capability of the measuring device for the target length based on the tab spacing tolerance and the verification index value to obtain a first verification result of the measuring device includes: Comparing the verification index value corresponding to the verification method with the tab spacing tolerance of a first preset multiple to obtain a first comparison result; The measuring capability of the measuring device for the target length is verified according to the first comparison result to obtain a first verification result of the measuring device.

2. The method according to claim 1, characterized in that The tab spacing tolerance is determined based on a ratio of the preset total length tolerance to the square root of the total number of tabs.

3. The method according to claim 2, characterized in that The tab spacing tolerance is equal to the ratio.

4. The method according to claim 1, wherein The obtaining of a target measurement value obtained by measuring the target tab spacing by the measuring device includes: If the verification method is an offline verification method, the tab pole piece whose tab spacing has been measured by the measuring device with a preset length is used as a sample tab pole piece; The measurement value obtained by measuring the tab spacing on the sample tab pole piece by the measuring device is used as the target measurement value; and the preset length is smaller than the target length.

5. The method according to claim 4, characterized in that The method further comprises: The tab spacing on the sample tab pole piece on the measuring table is measured by an image measuring instrument to obtain a target reference value corresponding to the offline calibration method; a weight is hung at one end of the sample tab pole piece, and the gravity of the weight is consistent with the tension of the production machine of the tab die-cutting machine.

6. The method according to claim 4, characterized in that Determining the calibration index value of the measuring device according to the target measurement value and the target reference value includes: Determine a measurement difference between a target reference value corresponding to the offline verification method and the target measurement value; A calibration index value of the measuring device is determined according to the measurement difference.

7. The method according to claim 6, characterized in that Determining the calibration index value of the measuring device according to the measurement difference includes: The measurement difference is used as a calibration index value of the measuring device.

8. The method according to claim 6 or 7, characterized in that Verifying the measuring capability of the measuring device for the target length according to the first comparison result to obtain a first verification result of the measuring device includes: If the first comparison result is that the measurement difference is less than or equal to the first preset multiple of the tab spacing tolerance, then determining that the first verification result is that the measurement capability of the tab pole piece length is normal; If the first comparison result is that the measurement difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

9. The method according to claim 1, characterized in that The obtaining of a target measurement value obtained by measuring the target tab spacing by the measuring device includes: If the verification method is an online verification method, the tab spacings of multiple sizes on the first standard component are measured by the measuring device to obtain first measurement values ​​corresponding to the tab spacings of each size; Among them, the target measurement value includes the first measurement value corresponding to the tab spacing of each size, the first standard part is a standard part arranged between the first pole piece material and the second pole piece material, the first pole piece material and the second pole piece material are materials on the workbench of the tab die-cutting machine when the tab die-cutting machine is working, and the grayscale of the first standard part is consistent with the grayscale of the tab pole piece.

10. The method according to claim 9, characterized in that Determining the calibration index value of the measuring device according to the target measurement value and the target reference value includes: Determining a deviation result between a first actual length of the tab spacing of each size on the first standard component and a corresponding first measurement value; the target reference value includes the first actual length of the tab spacing of each size on the first standard component; A calibration index value of the measuring device is determined according to a first bias result corresponding to the spacing between the tabs on the first standard component.

11. The method according to claim 10, characterized in that Determining the calibration index value of the measuring device according to the first bias result corresponding to the tab spacings on the first standard component includes: Fitting a first bias result corresponding to each tab spacing on the first standard component to obtain a first linearity; The first bias result corresponding to the tab spacings on the first standard component and the first linearity are used as the calibration index values.

12. The method according to claim 11, characterized in that Verifying the measuring capability of the measuring device for the target length according to the first comparison result to obtain a first verification result of the measuring device includes: If the first comparison result satisfies a first verification condition, it is determined that the first verification result indicates that the measurement capability of the length of the tab pole piece is normal; the first verification condition is that the first linearity is less than or equal to the tab spacing tolerance of the first preset multiple, and each of the first bias results is less than or equal to the tab spacing tolerance of the first preset multiple; If the first comparison result does not meet the first verification condition, it is determined that the first verification result is that the measurement capability of the length of the tab and the pole piece is abnormal.

13. The method according to claim 9, characterized in that The method further comprises: Measuring the length of each tab of each size on the first standard component in a target direction by the measuring device to obtain a second measurement value of each tab of each size in the target direction; the target direction includes the first direction where the maximum length of the first standard component is located and / or a second direction perpendicular to the first direction; Obtaining a second deviation result between a second actual length of a tab of each size on the first standard component and a second measured value in the same direction; The measurement capability of the measuring device for the tab size is verified based on the second deviation results corresponding to the tabs of various sizes in the same direction and the tab length tolerance, thereby obtaining a second verification result of the measuring device.

14. The method according to claim 13, characterized in that The step of verifying the measuring capability of the measuring device for the tab size based on the second deviation results corresponding to the tabs of various sizes in the same direction and the tab length tolerance to obtain a second verification result of the measuring device includes: Fitting the corresponding second bias results in the same direction to obtain a second linearity; Comparing the second linearity with a second preset multiple of the tab length tolerance, and comparing each of the second bias results with the second preset multiple of the tab length tolerance to obtain a second comparison result; According to the second comparison result, the measurement capability of the measuring device for the tab size is verified to obtain the second verification result.

15. The method according to claim 14, characterized in that Verifying the measurement capability of the measuring device for the tab size according to the second comparison result to obtain the second verification result includes: If the second comparison result satisfies a second verification condition, it is determined that the second verification result indicates that the measurement capability of the tab size is normal; the second verification condition is that the second linearity is less than or equal to the preset tolerance of the second preset multiple, and each of the second bias results is less than or equal to the preset tolerance of the second preset multiple; If the second comparison result does not meet the verification condition, it is determined that the second verification result is that the measurement capability of the tab size is abnormal.

16. The method according to claim 1, wherein The obtaining of a target measurement value obtained by measuring the target tab spacing by the measuring device includes: If the verification method is a stability verification method, the tab spacing of the second standard part on the conveying roller is measured by the measuring device at a preset verification time to obtain a third measurement value, and the third measurement value is used as the target measurement value; the grayscale of the second standard part is consistent with the grayscale of the tab pole piece.

17. The method according to claim 16, characterized in that Determining the calibration index value of the measuring device according to the target measurement value and the target reference value includes: Determining a first difference between a third actual length of the tab spacing on the second standard and the third measured value; wherein the target reference value includes the third actual length; A calibration index value of the measuring device is determined according to the first difference.

18. The method according to claim 17, characterized in that Determining a calibration index value of the measuring device according to the first difference includes: The first difference is used as a calibration index value of the measuring device.

19. The method according to claim 18, characterized in that Verifying the measuring capability of the measuring device for the target length according to the first comparison result to obtain a first verification result of the measuring device includes: If the first comparison result is that the first difference is less than or equal to the first preset multiple of the tab spacing tolerance, then determining that the first verification result is that the measurement capability of the tab pole piece length is normal; If the first comparison result is that the first difference is greater than the first preset multiple of the tab spacing tolerance, then the first verification result is determined to be that the measurement capability of the tab pole piece length is abnormal.

20. The method according to claim 16, wherein The method further comprises: measuring, by the measuring device, a length of the tab on the second standard component in a target direction to obtain a fourth measurement value of the tab in the target direction; the target direction includes a first direction in which the maximum length of the second standard component is located and / or a second direction perpendicular to the first direction; Obtaining a second difference between a fourth actual length of the tab on the second standard component in the same direction and the fourth measured value; The measurement capability of the measuring device for the tab size is verified based on the second difference corresponding to the tab on the second standard component in the same direction and the tab length tolerance to obtain a second verification result of the measuring device.

21. The method according to claim 20, characterized in that The step of verifying the measurement capability of the measuring device for the tab size based on the second difference corresponding to the tab on the second standard component in the same direction and the tab length tolerance to obtain a second verification result of the measuring device includes: Comparing the second difference corresponding to the tab on the second standard component in the same direction with the tab length tolerance of a second preset multiple to obtain a third comparison result; According to the third comparison result, the measurement capability of the measuring device for the tab size is verified to obtain a second verification result of the measuring device.

22. The method according to claim 21, characterized in that Verifying the measurement capability of the measuring device for the tab size based on the third comparison result to obtain a second verification result of the measuring device includes: If the third comparison result is that the second difference is less than or equal to the tab length tolerance of a second preset multiple, determining that the second verification result is that the measurement capability of the tab size is normal; If the third comparison result is that the second difference is greater than the second preset multiple of the tab length tolerance, then the second verification result is determined to be an abnormality in the measurement capability of the tab size.

23. A battery measuring equipment calibration device, characterized in that: The device comprises: A first acquisition module is used to acquire a target measurement value obtained by measuring the target tab spacing by the measuring device; A first determining module is used to determine a calibration index value of the measuring device according to the target measurement value and the target reference value; A first verification module is configured to verify the measuring capability of the measuring device for a target length based on the tab spacing tolerance and the verification index value, and obtain a first verification result of the measuring device; the target length is the length of the tab pole piece used to produce one battery cell, and the tab spacing tolerance is determined based on a preset total length tolerance corresponding to the target length and the total number of tab spacings on the tab pole piece of the target length; The step of verifying the measuring capability of the measuring device for the target length based on the tab spacing tolerance and the verification index value to obtain a first verification result of the measuring device includes: Comparing the verification index value corresponding to the verification method with the tab spacing tolerance of a first preset multiple to obtain a first comparison result; The measuring capability of the measuring device for the target length is verified according to the first comparison result to obtain a first verification result of the measuring device.

24. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 22 are implemented.

25. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 22 are implemented.

26. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 22 are implemented.

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