Laminated battery core coating detection method, device, equipment and storage medium

Abstract

The present application provides a method, device, equipment and storage medium for detecting the coating of laminated battery cells. The method is applied to a detection processor, which is connected to at least two coating detection components. The coating detection components include two pairs of ray sources and detectors located on both sides of the same angular position of the laminated battery cell, and the angle between the ray direction of the ray source and the edge close to the laminated battery cell is less than a preset detection angle; the method includes: obtaining a first coating value collected by a first coating detection component; obtaining a second coating value collected by a second coating detection component; comparing and analyzing the first coating value, the second coating value and the preset standard value to obtain a battery cell coating detection result. By detecting the same battery cell angular position on both sides, the coating values ​​in the length and width directions of the angular position are obtained. The obtained coating values ​​have high authenticity and can improve the accuracy of judging the battery cell coating situation.

Description

Technical Field

[0001] The present application relates to the field of battery manufacturing technology, and in particular to a laminated battery core coating detection method, device, equipment and storage medium. Background Art

[0002] In the related art, the projection value of the corner point of the cell pole piece is measured by using X-rays incident obliquely from the corner of the cell, so as to judge the coating condition of the cell based on the projection value. However, this method cannot truly measure the coating value of the cell in its length and width direction, and the accuracy of the coating condition judgment is not high. Summary of the invention

[0003] The main purpose of the embodiments of the present application is to propose a laminated battery cell coating detection method, device, equipment and storage medium. By detecting the same battery cell corner on both sides, the coating values ​​in the length and width directions of the corner are obtained. The obtained coating values ​​have high authenticity and can improve the accuracy of judging the battery cell coating condition.

[0004] To achieve the above-mentioned purpose, a first aspect of an embodiment of the present application proposes a laminated battery core coating detection method, which is applied to a detection processor, wherein the detection processor is connected to at least two coating detection components, and the coating detection components include two pairs of ray sources and detectors located on both sides of the same angular position of the laminated battery core, and the same angular position of the laminated battery core is detected by the ray sources and the detectors, and the angle between the ray direction of the ray source and the edge close to the laminated battery core is less than a preset detection angle, and the preset detection angle is 0 to 5°; the method includes:

[0005] Obtain a first wrapping value collected by a first wrapping detection component; wherein the first wrapping value includes: a first length wrapping value and a first width wrapping value; the first length wrapping value is a wrapping value of a first cell corner position in a length direction of the laminated cell, and the first width wrapping value is a wrapping value of a first cell corner position in a width direction of the laminated cell;

[0006] Acquire a second wrapping value collected by a second wrapping detection component; wherein the second wrapping value includes: a second length wrapping value and a second width wrapping value; the second length wrapping value is a wrapping value of the second cell angle in the length direction of the laminated cell, and the second width wrapping value is a wrapping value of the second cell angle in the width direction of the laminated cell;

[0007] The first length covering value, the first width covering value, the second length covering value, the second width covering value and a preset standard value are compared and analyzed to obtain a battery cell covering detection result.

[0008] In some embodiments, the preset standard value includes a standard length wrapping value and a standard width wrapping value, and the step of performing comparative analysis on the first length wrapping value, the first width wrapping value, the second length wrapping value, the second width wrapping value and the preset standard value to obtain the cell wrapping test result includes:

[0009] Comparing and analyzing the first length coverage value, the second length coverage value and the standard length coverage value to obtain a length coverage comparison result;

[0010] Comparing and analyzing the first width coverage value, the second width coverage value and the standard width coverage value to obtain a width coverage comparison result;

[0011] The length coating comparison result and the width coating comparison result are integrated to obtain the battery cell coating detection result.

[0012] In some embodiments, it also includes:

[0013] Obtain a third wrap value and a fourth wrap value; wherein the third wrap value includes: a third length wrap value and a third width wrap value, the third length wrap value is the wrap value of the third battery cell angle in the length direction of the laminated battery cell, and the third width wrap value is the wrap value of the third battery cell angle in the width direction of the laminated battery cell; the fourth wrap value includes: a fourth length wrap value and a fourth width wrap value, the fourth length wrap value is the wrap value of the fourth battery cell angle in the length direction of the laminated battery cell, and the fourth width wrap value is the wrap value of the fourth battery cell angle in the width direction of the laminated battery cell;

[0014] The first length wrapping value, the first width wrapping value, the second length wrapping value, the second width wrapping value, the third length wrapping value, the third width wrapping value, the fourth length wrapping value, the fourth width wrapping value and a preset standard value are compared and analyzed to update the battery cell wrapping detection result.

[0015] In some embodiments, the step of obtaining the third wrapping value and the fourth wrapping value includes:

[0016] The third length wrap value is calculated according to the first length wrap value, the preset standard value and the preset cell size, and the fourth length wrap value is calculated according to the second length wrap value, the preset standard value and the preset cell size;

[0017] The third width wrap value is calculated according to the first width wrap value, the preset standard value and the preset cell size, and the fourth width wrap value is calculated according to the second width wrap value, the preset standard value and the preset cell size.

[0018] In some embodiments, the detection processor is connected to at least four envelopment detection components, and the step of obtaining the third envelopment value and the fourth envelopment value includes:

[0019] The third width wrap value is calculated according to the first width wrap value, the preset standard value and the preset cell size, and the fourth width wrap value is calculated according to the second width wrap value, the preset standard value and the preset cell size;

[0020] Obtaining the third length covering value collected by the third covering detection component;

[0021] Obtain the fourth length covering value collected by the fourth covering detection component.

[0022] In some embodiments, the detection processor is connected to at least four envelopment detection components, and the step of obtaining the third envelopment value and the fourth envelopment value includes:

[0023] Obtaining the third covering value collected by the third covering detection component;

[0024] Obtain the fourth covering value collected by the fourth covering detection component.

[0025] In some embodiments, it also includes:

[0026] Generate an interface display signal according to the battery cell coating detection result, and output it to an external display device;

[0027] If the battery cell coating detection result indicates that the coating is poor, an alarm prompt signal is output to an external alarm device.

[0028] To achieve the above-mentioned purpose, the second aspect of the present application proposes a laminated battery core coating detection device, the laminated battery core coating detection device comprising: a detection processor and a coating detection component, the detection processor is connected to at least two of the coating detection components, the coating detection component comprises two pairs of ray sources and detectors located on both sides of the same angular position of the laminated battery core, and the same angular position of the laminated battery core is detected by the ray source and the detector, the angle between the ray direction of the ray source and the edge close to the laminated battery core is less than a preset detection angle, and the preset detection angle is 0 to 5°; the detection processor comprises:

[0029] A first detection module, the first detection module is used to obtain a first covering value collected by a first covering detection component; wherein the first covering value includes: a first length covering value and a first width covering value; the first length covering value is a covering value of a first cell corner position in a length direction of the laminated cell, and the first width covering value is a covering value of a first cell corner position in a width direction of the laminated cell;

[0030] A second detection module, the second detection module is used to obtain a second wrapping value collected by a second wrapping detection component; wherein the second wrapping value includes: a second length wrapping value and a second width wrapping value; the second length wrapping value is a wrapping value of the second cell angle in the length direction of the laminated cell, and the second width wrapping value is a wrapping value of the second cell angle in the width direction of the laminated cell;

[0031] A comparison and analysis module is used to compare and analyze the first length coverage value, the first width coverage value, the second length coverage value, the second width coverage value and a preset standard value to obtain a battery cell coverage detection result.

[0032] To achieve the above-mentioned purpose, the third aspect of the present application proposes a laminated battery core coating detection device, comprising:

[0033] The laminated battery core coating detection device as described in the second aspect above;

[0034] at least one memory;

[0035] at least one program;

[0036] The program is stored in the memory, and the laminated battery core coating detection device executes at least one program to achieve:

[0037] As the method according to the first aspect above.

[0038] To achieve the above-mentioned purpose, the fourth aspect of the present application proposes a storage medium, which is a readable storage medium, and the readable storage medium stores executable instructions, and the executable instructions are used to enable the laminated battery core coating detection device as described in the second aspect to execute:

[0039] As the method according to the first aspect above.

[0040] The embodiments of the present application propose a laminated battery cell coating detection method, device, equipment and storage medium, which detects the same battery cell corner on both sides to obtain the coating value of the corner in the length and width directions. The obtained coating value has high authenticity and can improve the accuracy of judging the battery cell coating condition. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a flow chart of a laminated battery core coating detection method provided by an embodiment of the present application;

[0042] Figure 2 It is a configuration diagram of an embodiment of the coating detection component of the present application;

[0043] Figure 3This is a working principle diagram of an embodiment of the coating detection component of the present application;

[0044] Figure 4 yes Figure 1 The flowchart of one embodiment of step S103 is shown;

[0045] Figure 5 is a flow chart of a laminated battery core coating detection method provided by another embodiment of the present application;

[0046] Figure 6 yes Figure 5 The flowchart of step S301 is shown as an embodiment;

[0047] Figure 7 yes Figure 5 The flowchart of another embodiment of step S301 is shown;

[0048] Figure 8 yes Figure 5 The flowchart of another embodiment of step S301 is shown;

[0049] Fig. 9 is a flow chart of a laminated battery core coating detection method provided by another embodiment of the present application;

[0050] Fig.10 It is a module diagram of a laminated battery core coating detection device provided in one embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0052] It should be noted that, although the functional modules are divided in the device schematic diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the device or the order in the flowchart. The terms "first", "second", etc. in the specification, claims and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0054] In addition, the described features, structures or characteristics may be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details, or other methods, components, devices, steps, etc. may be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the present disclosure.

[0055] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0056] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0057] In the related art, the projection value of the corner point of the cell pole piece is measured by using X-rays incident obliquely from the corner of the cell, so as to judge the coating condition of the cell based on the projection value. However, this method cannot truly measure the coating value of the cell in its length and width direction, and the accuracy of the coating condition judgment is not high.

[0058] Based on this, the present application proposes a laminated battery cell coating detection method, device, equipment and storage medium. By detecting the same battery cell corner on both sides, the coating values ​​in the length and width directions of the corner are obtained. The obtained coating values ​​have high authenticity and can improve the accuracy of judging the battery cell coating condition.

[0059] See also Figure 1 The laminated battery core coating detection method of the embodiment of the present application is applied to a detection processor, the detection processor is connected to at least two coating detection components, the coating detection components include two pairs of ray sources and detectors located on both sides of the same angular position of the laminated battery core, and the same angular position of the laminated battery core is detected by the ray source and the detector, the angle between the ray direction of the ray source and the edge close to the laminated battery core is less than a preset detection angle, and the preset detection angle is 0 to 5°; the laminated battery core coating detection method includes but is not limited to steps S101 to S103:

[0060] Step S101, obtaining a first covering value collected by a first covering detection component; wherein the first covering value includes: a first length covering value and a first width covering value; the first length covering value is a covering value of a first cell corner in a length direction of a laminated cell, and the first width covering value is a covering value of a first cell corner in a width direction of a laminated cell;

[0061] Step S102, obtaining a second wrapping value collected by a second wrapping detection component; wherein the second wrapping value includes: a second length wrapping value and a second width wrapping value; the second length wrapping value is a wrapping value of the second cell corner in the length direction of the laminated cell, and the second width wrapping value is a wrapping value of the second cell corner in the width direction of the laminated cell;

[0062] Step S103, comparing and analyzing the first length coverage value, the first width coverage value, the second length coverage value, the second width coverage value and the preset standard value to obtain a cell coverage detection result.

[0063] For an illustrative embodiment, see Figure 2 , Figure 2 This is a schematic diagram of the configuration of an embodiment of a coating detection component when the laminated battery core coating detection method of the present application is applied. Figure 2 The two coating detection components respectively detect the coating values ​​of the two corners on the side of the laminated battery cell away from the battery cell pole ear. The coating detection component includes two pairs of radiation sources and detectors located on both sides of the same corner of the laminated battery cell, and the same corner of the laminated battery cell is detected by the radiation source and the detector. The angle between the radiation direction of the radiation source and the edge close to the laminated battery cell is less than the preset detection angle, and the preset detection angle is 0 to 5°. In other embodiments, the range of the preset detection angle can be adjusted as needed, and no specific limitation is made here. It can be understood that when the coating detection component is used to respectively detect the coating values ​​of the two corners on the side where the battery cell pole ear of the laminated battery cell is located, the configuration of the radiation source and the detector is the same as Figure 2 It is similar to the above, so I will not go into details here.

[0064] For an example, see Figure 3 , Figure 3 This is a working principle diagram of an embodiment of the coating detection component of the present application. In this embodiment, the type of ray is X-ray. In other embodiments, the type of ray is not specifically limited. Figure 3 The middle dotted line indicates the direction of the ray, a indicates the coverage value of the cell corner position in the width direction of the laminated cell, b indicates the coverage value of the cell corner position in the length direction of the laminated cell, c indicates the distance between the corner points of the adjacent cell tabs at the corner position, d indicates the projection value of the corner point spacing c in the ray direction, and α indicates the angle between the ray direction of the ray source and the edge of the laminated cell. Figure 3In (a), the direction of the ray source is close to the wide side of the laminated core, and α represents the angle between the ray direction and the width direction of the laminated core. The closer α is to zero, the closer the projection value d is to the actual width coverage value a. Figure 3 In (b), the direction of the ray from the ray source is close to the long side of the laminated battery cell, and α represents the angle between the ray direction and the length direction of the laminated battery cell. The closer α is to zero, the closer the projection value d is to the true length coverage value b. By detecting the projection value d close to the long side and wide side of the laminated battery cell respectively, the length coverage value and width coverage value with higher authenticity can be obtained respectively. The smaller α is, the higher the authenticity of the obtained coverage value. It can be understood that the specific value of α is related to the accuracy of the relevant detection equipment.

[0065] In steps S101 to S102 shown in the embodiment of the present application, by detecting the same battery cell corner on both sides, a coating value with high authenticity in the length and width directions of the corner is obtained, thereby improving the accuracy of the battery cell coating obtained by comparing and analyzing the coating values ​​at different corners.

[0066] In step S101 of some embodiments, see Figure 2 The first coating detection component is arranged at one of the two corner positions on the side of the laminated battery cell away from the battery cell ear.

[0067] In step S102 of some embodiments, see Figure 2 The second covering detection component is arranged at another corner position adjacent to the first covering component and away from the battery cell ear.

[0068] In step S103 of some embodiments, the preset standard value is a range value obtained by summarizing the coating values ​​collected from preset laminated battery cells with good coating conditions, and is compared with the collected coating values ​​of the laminated battery cells under test to determine the coating condition of the laminated battery cells under test.

[0069] In some embodiments, see Figure 4 The preset standard value includes a standard length covering value and a standard width covering value. Step S103 includes but is not limited to steps S201 to S203:

[0070] Step S201, performing comparative analysis on the first length coverage value, the second length coverage value and the standard length coverage value to obtain a length coverage comparison result;

[0071] Step S202, performing comparative analysis on the first width coverage value, the second width coverage value and the standard width coverage value to obtain a width coverage comparison result;

[0072] Step S203, integrating the length coating comparison result and the width coating comparison result to obtain the battery cell coating detection result.

[0073] In steps S201 to S203 shown in the embodiment of the present application, the length coating value and the width coating value are compared and analyzed to obtain comparison results, and then the comparison results are integrated to improve the reliability of the final battery cell coating detection result.

[0074] In step S201 of some embodiments, the standard length wrap value is a range value obtained by summarizing the length wrap values ​​collected from the laminated battery cells with good preset wrapping conditions. By comparing whether the first length wrap value and the second length wrap value are both within the range represented by the standard length wrap value, a comparison result of whether the length wrapping is normal is obtained.

[0075] In step S202 of some embodiments, the standard width wrap value is a range value obtained by summarizing the width wrap values ​​collected from the preset laminated battery cells with good wrapping conditions. By comparing whether the first width wrap value and the second width wrap value are both within the range represented by the standard width wrap value, a comparison result of whether the width wrapping is normal is obtained.

[0076] In step S203 of some embodiments, if the first length wrap value and the second length wrap value are both within the range represented by the standard length wrap value, and the first width wrap value and the second width wrap value are both within the range represented by the standard width wrap value, then the wrapping condition of the laminated battery cell is normal; otherwise, the laminated battery cell has poor wrapping.

[0077] In some embodiments, see Figure 5 The laminated battery core coating detection method also includes but is not limited to steps S301 to S302:

[0078] Step S301, obtaining a third wrapping value and a fourth wrapping value; wherein the third wrapping value includes: a third length wrapping value and a third width wrapping value, the third length wrapping value is the wrapping value of the third battery cell corner in the length direction of the laminated battery cell, and the third width wrapping value is the wrapping value of the third battery cell corner in the width direction of the laminated battery cell; the fourth wrapping value includes: a fourth length wrapping value and a fourth width wrapping value, the fourth length wrapping value is the wrapping value of the fourth battery cell corner in the length direction of the laminated battery cell, and the fourth width wrapping value is the wrapping value of the fourth battery cell corner in the width direction of the laminated battery cell;

[0079] Step S302, comparing and analyzing the first length wrapping value, the first width wrapping value, the second length wrapping value, the second width wrapping value, the third length wrapping value, the third width wrapping value, the fourth length wrapping value, the fourth width wrapping value and the preset standard value to update the battery cell wrapping detection result.

[0080] In steps S301 to S302 shown in the embodiment of the present application, based on detecting the coating values ​​of the first battery cell angle and the second battery cell angle, the coating values ​​of the other two angles of the laminated battery cell are obtained for comparative analysis, thereby comprehensively detecting the coating conditions of the laminated battery cell and obtaining more accurate battery cell coating detection results.

[0081] In step S301 of some embodiments, the third cell angle and the fourth cell angle are cell angles on one side where the cell tabs are located. The third cell angle is a diagonal angle to the first cell angle, and the fourth cell angle is a diagonal angle to the second cell angle.

[0082] In step S302 of some embodiments, the coating values ​​of the four corners of the laminated battery core are compared with preset standard values, so as to comprehensively detect the coating condition of the laminated battery core.

[0083] In some embodiments, see Figure 6 Step S301 includes but is not limited to steps S401 to S402:

[0084] Step S401, calculating a third length wrap value according to the first length wrap value, a preset standard value and a preset cell size, and calculating a fourth length wrap value according to the second length wrap value, a preset standard value and a preset cell size;

[0085] Step S402, calculating a third width wrap value according to the first width wrap value, a preset standard value and a preset cell size, and calculating a fourth width wrap value according to the second width wrap value, a preset standard value and a preset cell size.

[0086] In steps S401 to S402 shown in the embodiment of the present application, the covering values ​​of the third cell angle and the fourth cell angle are directly calculated by using the preset cell size data and the detected covering values ​​of the first cell angle and the second cell angle. There is no need to set up a covering detection component to detect the third cell angle and the fourth cell angle, thereby saving device costs.

[0087] In step S401 of some embodiments, the width coverage value of the diagonal corner is calculated based on the width coverage value of the measured corner and the preset battery cell size. The preset standard value is used to verify the calculated coverage value. In other embodiments, the width coverage value of the adjacent corner can also be calculated by the width coverage value of the measured corner at the same time.

[0088] In step S402 of some embodiments, the length coverage value of the diagonal angle is calculated based on the measured length coverage value of the angle and the preset battery cell size. The preset standard value is used to verify the calculated coverage value. In other embodiments, the length coverage value of the adjacent angle can also be calculated by the measured length coverage value of the angle.

[0089] In some embodiments, see Figure 7 , the detection processor is connected to at least four coating detection components, step S301 includes but is not limited to steps S501 to S503:

[0090] Step S501, calculating a third width wrap value according to the first width wrap value, a preset standard value and a preset cell size, and calculating a fourth width wrap value according to the second width wrap value, a preset standard value and a preset cell size;

[0091] Step S502, obtaining a third length covering value collected by a third covering detection component;

[0092] Step S503, obtaining a fourth length covering value collected by a fourth covering detection component.

[0093] In steps S501 to S503 shown in the embodiment of the present application, the third covering value and the fourth covering value are obtained by combining detection and calculation, thereby improving the authenticity of the obtained third covering value and the fourth covering value.

[0094] In step S501 of some embodiments, the width coverage value of the diagonal corner is calculated based on the width coverage value of the measured corner and the preset battery cell size. The preset standard value is used to verify the calculated coverage value. In other embodiments, the width coverage value of the adjacent corner can also be calculated by the width coverage value of the measured corner at the same time.

[0095] In step S502 and step S503 of some embodiments, when detecting the third battery cell angle position and the fourth battery cell angle position by the coating detection component, it is necessary to roll up the battery cell ears to prevent the battery cell ears from affecting the imaging of the radiation on the detector.

[0096] In some embodiments, see Figure 8 The detection processor is connected to at least four coating detection components, and step S301 includes but is not limited to steps S601 to S602:

[0097] Step S601, obtaining a third covering value collected by a third covering detection component;

[0098] Step S602, obtaining a fourth covering value collected by a fourth covering detection component.

[0099] In the steps S601 to S602 shown in the embodiment of the present application, the coating conditions of the third battery cell corner and the fourth battery cell corner are directly detected by the coating detection component, so that the third coating value and the fourth coating value can be obtained more quickly.

[0100] In step S601 and step S602 of some embodiments, when detecting the third battery cell angle position and the fourth battery cell angle position by the coating detection component, it is necessary to roll up the battery cell ears to prevent the battery cell ears from affecting the imaging of the radiation on the detector.

[0101] In some embodiments, see Fig. 9 The laminated battery core coating detection method also includes but is not limited to steps S701 to S702:

[0102] Step S701, generating an interface display signal according to the battery cell coating detection result, and outputting it to an external display device;

[0103] Step S702: if the cell coating detection result indicates that the coating is poor, an alarm signal is output to an external alarm device.

[0104] In the embodiment of the present application, steps S701 to S702 are used to display the coating test results through an external display device, so that the test personnel can view them easily. The external alarm device is used to prompt the test personnel to handle the laminated cells with poor coating.

[0105] In step S701 of some embodiments, the first length wrap value, the first width wrap value, the second length wrap value, the second width wrap value, the third length wrap value, the third width wrap value, the fourth length wrap value, and the fourth width wrap value can also be displayed simultaneously to facilitate inspectors to understand the wrapping inspection status of the laminated battery in detail.

[0106] In step S702 of some embodiments, the external alarm device is a light alarm or a sound alarm.

[0107] See also Fig.10 The embodiment of the present application also provides a laminated battery core coating detection device, including: a detection processor and a coating detection component, the detection processor is connected to at least two coating detection components, the coating detection component includes two pairs of ray sources and detectors located on both sides of the same angular position of the laminated battery core, and the same angular position of the laminated battery core is detected by the ray source and the detector, and the angle between the ray direction of the ray source and the edge close to the laminated battery core is less than a preset detection angle, and the preset detection angle is 0-5°; the detection processor includes:

[0108] A first detection module, the first detection module is used to obtain a first covering value collected by a first covering detection component; wherein the first covering value includes: a first length covering value and a first width covering value; the first length covering value is a covering value of the first battery cell corner in the length direction of the laminated battery cell, and the first width covering value is a covering value of the first battery cell corner in the width direction of the laminated battery cell;

[0109] A second detection module, the second detection module is used to obtain a second wrapping value collected by a second wrapping detection component; wherein the second wrapping value includes: a second length wrapping value and a second width wrapping value; the second length wrapping value is a wrapping value of the second cell corner in the length direction of the laminated cell, and the second width wrapping value is a wrapping value of the second cell corner in the width direction of the laminated cell;

[0110] The comparison and analysis module is used to compare and analyze the first length coating value, the first width coating value, the second length coating value, the second width coating value and the preset standard value to obtain the battery cell coating detection result.

[0111] The laminated battery cell coating detection device of the embodiment of the present application detects the same battery cell angle on both sides to obtain a coating value with high authenticity in the length and width directions of the angle, thereby improving the accuracy of the battery cell coating obtained by comparing and analyzing the coating values ​​at different angles.

[0112] The present application also provides a laminated battery core coating detection device, including:

[0113] The laminated battery core coating detection device as in the above embodiment;

[0114] at least one memory;

[0115] at least one program;

[0116] The program is stored in the memory, and the laminated battery core coating detection device executes at least one program to achieve:

[0117] A laminated battery core coating detection method as in any of the above embodiments.

[0118] The present application also provides a storage medium, which is a readable storage medium. The readable storage medium stores executable instructions, which are used to enable the laminated battery core coating detection device of the above embodiment to execute:

[0119] A laminated battery core coating detection method as in any of the above embodiments.

[0120] The embodiments described in the embodiments of the present application are intended to more clearly illustrate the technical solutions of the embodiments of the present application and do not constitute a limitation on the technical solutions provided in the embodiments of the present application. Those skilled in the art will appreciate that with the evolution of technology and the emergence of new application scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0121] Those skilled in the art will appreciate that the technical solutions shown in the figures do not constitute a limitation on the embodiments of the present application, and may include more or fewer steps than shown in the figures, or a combination of certain steps, or different steps.

[0122] The device embodiments described above are merely illustrative, and the units described as separate components may or may not be physically separated, that is, they may be located in one place or distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0123] Those skilled in the art will appreciate that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices may be implemented as software, firmware, hardware, or a suitable combination thereof.

[0124] It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0125] It should be understood that in the present application, "at least one (item)" means one or more, and "plurality" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that three relationships may exist. For example, "A and / or B" can mean: only A exists, only B exists, and A and B exist at the same time, where A and B can be singular or plural. The character " / " generally indicates that the objects associated before and after are in an "or" relationship. "At least one of the following" or similar expressions refers to any combination of these items, including any combination of single or plural items. For example, at least one of a, b or c can mean: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, c can be single or multiple.

[0126] In the several embodiments provided in the present application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0127] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0128] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0129] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including multiple instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read On ly Memory, referred to as ROM), random access memory (Random Access Memory, referred to as RAM), disk or optical disk and other media that can store programs.

[0130] The embodiments of the present application are described in detail above in conjunction with the accompanying drawings, but the present application is not limited to the above embodiments. Various changes can be made within the knowledge of ordinary technicians in the relevant technical field without departing from the purpose of the present application. In addition, the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

Claims

1. A laminated battery core coating detection method, characterized in that: Applied to a detection processor, the detection processor is connected to at least two coating detection components, the coating detection components include two pairs of radiation sources and detectors located on both sides of the same angular position of the laminated battery core, and the same angular position of the laminated battery core is detected by the radiation sources and the detectors, the angle between the radiation direction of the radiation source and the edge close to the laminated battery core is less than a preset detection angle, and the preset detection angle is 0-5°; wherein the radiation direction of one of the radiation sources is close to the wide side of the laminated battery core, and the angle between the radiation direction and the width direction of the laminated battery core is less than the preset detection angle; the radiation direction of the other radiation source is close to the long side of the laminated battery core, and the angle between the radiation direction and the length direction of the laminated battery core is less than the preset detection angle; The method comprises: Obtain a first wrapping value collected by a first wrapping detection component; wherein the first wrapping value includes: a first length wrapping value and a first width wrapping value; the first length wrapping value is a wrapping value of a first cell corner position in a length direction of the laminated cell, and the first width wrapping value is a wrapping value of a first cell corner position in a width direction of the laminated cell; Acquire a second wrapping value collected by a second wrapping detection component; wherein the second wrapping value includes: a second length wrapping value and a second width wrapping value; the second length wrapping value is a wrapping value of the second cell angle in the length direction of the laminated cell, and the second width wrapping value is a wrapping value of the second cell angle in the width direction of the laminated cell; The first length covering value, the first width covering value, the second length covering value, the second width covering value and a preset standard value are compared and analyzed to obtain a battery cell covering detection result.

2. The method according to claim 1, characterized in that The preset standard value includes a standard length covering value and a standard width covering value, and the step of performing comparative analysis on the first length covering value, the first width covering value, the second length covering value, the second width covering value and the preset standard value to obtain the cell covering test result includes: Comparing and analyzing the first length coverage value, the second length coverage value and the standard length coverage value to obtain a length coverage comparison result; Comparing and analyzing the first width coverage value, the second width coverage value and the standard width coverage value to obtain a width coverage comparison result; The length coating comparison result and the width coating comparison result are integrated to obtain the battery cell coating detection result.

3. The method according to claim 1, characterized in that Also includes: Obtain a third wrap value and a fourth wrap value; wherein the third wrap value includes: a third length wrap value and a third width wrap value, the third length wrap value is the wrap value of the third battery cell angle in the length direction of the laminated battery cell, and the third width wrap value is the wrap value of the third battery cell angle in the width direction of the laminated battery cell; the fourth wrap value includes: a fourth length wrap value and a fourth width wrap value, the fourth length wrap value is the wrap value of the fourth battery cell angle in the length direction of the laminated battery cell, and the fourth width wrap value is the wrap value of the fourth battery cell angle in the width direction of the laminated battery cell; The first length wrapping value, the first width wrapping value, the second length wrapping value, the second width wrapping value, the third length wrapping value, the third width wrapping value, the fourth length wrapping value, the fourth width wrapping value and a preset standard value are compared and analyzed to update the battery cell wrapping detection result.

4. The method according to claim 3, characterized in that The step of obtaining the third wrapping value and the fourth wrapping value comprises: The third length wrap value is calculated according to the first length wrap value, the preset standard value and the preset cell size, and the fourth length wrap value is calculated according to the second length wrap value, the preset standard value and the preset cell size; The third width wrap value is calculated according to the first width wrap value, the preset standard value and the preset cell size, and the fourth width wrap value is calculated according to the second width wrap value, the preset standard value and the preset cell size.

5. The method according to claim 3, characterized in that: The detection processor is connected to at least four envelopment detection components, and the step of obtaining the third envelopment value and the fourth envelopment value includes: The third width wrap value is calculated according to the first width wrap value, the preset standard value and the preset cell size, and the fourth width wrap value is calculated according to the second width wrap value, the preset standard value and the preset cell size; Obtaining the third length covering value collected by the third covering detection component; Obtain the fourth length covering value collected by the fourth covering detection component.

6. The method according to claim 3, characterized in that The detection processor is connected to at least four envelopment detection components, and the step of obtaining the third envelopment value and the fourth envelopment value includes: Obtaining the third covering value collected by the third covering detection component; Obtain the fourth covering value collected by the fourth covering detection component.

7. The method according to any one of claims 1 to 6, characterized in that: Also includes: Generate an interface display signal according to the battery cell coating detection result, and output it to an external display device; If the battery cell coating detection result indicates that the coating is poor, an alarm prompt signal is output to an external alarm device.

8. A laminated battery core coating detection device, characterized in that: The laminated battery core coating detection device comprises: a detection processor and a coating detection component, the detection processor is connected to at least two of the coating detection components, the coating detection component comprises two pairs of radiation sources and detectors located on both sides of the same angular position of the laminated battery core, and the same angular position of the laminated battery core is detected by the radiation sources and the detectors, the angle between the radiation direction of the radiation source and the edge close to the laminated battery core is less than a preset detection angle, and the preset detection angle is 0-5°; wherein the radiation direction of one of the radiation sources is close to the wide side of the laminated battery core, and the angle between the radiation direction and the width direction of the laminated battery core is less than the preset detection angle; the radiation direction of the other radiation source is close to the long side of the laminated battery core, and the angle between the radiation direction and the length direction of the laminated battery core is less than the preset detection angle; The detection processor comprises: A first detection module, the first detection module is used to obtain a first covering value collected by a first covering detection component; wherein the first covering value includes: a first length covering value and a first width covering value; the first length covering value is a covering value of a first cell corner position in a length direction of the laminated cell, and the first width covering value is a covering value of a first cell corner position in a width direction of the laminated cell; A second detection module, the second detection module is used to obtain a second wrapping value collected by a second wrapping detection component; wherein the second wrapping value includes: a second length wrapping value and a second width wrapping value; the second length wrapping value is a wrapping value of the second cell angle in the length direction of the laminated cell, and the second width wrapping value is a wrapping value of the second cell angle in the width direction of the laminated cell; A comparison and analysis module is used to compare and analyze the first length coverage value, the first width coverage value, the second length coverage value, the second width coverage value and a preset standard value to obtain a battery cell coverage detection result.

9. A laminated battery core coating detection device, characterized in that: include: The laminated battery core coating detection device as described in claim 8; at least one memory; at least one program; The program is stored in the memory, and the laminated battery core coating detection device executes at least one program to achieve: A method as claimed in any one of claims 1 to 7.

10. A storage medium, characterized in that: The storage medium is a readable storage medium, and the readable storage medium stores executable instructions, and the executable instructions are used to enable the laminated battery core coating detection device according to claim 8 to execute: A method as claimed in any one of claims 1 to 7.

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