Detection method of cylindrical battery double current collecting discs, electronic equipment and storage medium

Abstract

The invention discloses a detection method of a cylindrical battery double-busbar disc, electronic equipment and a storage medium. The method comprises the following steps: acquiring an image of a to-be-detected cylindrical battery welded with a convergence disc, and identifying a hole area and an inner ring area in the image; respectively calculating a first black shadow area of each hole region and a second black shadow area of the inner ring circle region according to the pixel sizes of each hole region and the inner ring circle region; and according to the first black shadow area, the second black shadow area and a preset threshold value, determining whether the cylindrical battery to be detected has the double confluence plates or not. According to the technical scheme provided by the embodiment of the invention, on the basis of existing CCD detection, calculation and judgment logic of the shadow area are added, hardware investment does not need to be increased, defective products can be effectively prevented from flowing out, the cost and the missed killing rate are reduced, and the product quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of battery quality detection, and in particular to a detection method, electronic equipment and storage medium for a cylindrical battery double busbar. Background Art

[0002] Currently, the industry usually uses in-weld detection devices to detect whether cylindrical batteries have dual busbars, or if there is no detection in the current process, the DC resistance (DCR) value is detected in subsequent processes to identify whether cylindrical batteries have dual busbars.

[0003] The existing technology has technical problems of high cost and high leakage rate, which leads to serious quality risks after the batteries produced are made into battery packs. Summary of the Invention

[0004] The present invention provides a detection method, electronic equipment and storage medium for a dual busbar of a cylindrical battery to solve the technical problems of high cost and high missed kill rate in the prior art, which can effectively prevent the outflow of defective products, improve product quality and reduce costs.

[0005] According to one aspect of the present invention, a method for detecting a double busbar of a cylindrical battery is provided, comprising:

[0006] Acquire an image of the cylindrical battery to be tested after welding the busbar, and identify the hole area and the inner circular area in the image;

[0007] Calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circular area according to the pixel sizes of each hole area and the inner circular area;

[0008] According to the first black shadow area, the second black shadow area and a preset threshold, it is determined whether the cylindrical battery to be tested has a double busbar.

[0009] Optionally, the preset threshold includes a first preset threshold and a second preset threshold;

[0010] The determining whether the cylindrical battery to be tested has dual busbars according to the first black shadow area, the second black shadow area, and a preset threshold value includes:

[0011] Comparing the first black shadow surface of each hole area with a first preset threshold value to obtain a first comparison result;

[0012] Comparing the second black shadow area of ​​the inner circular region with a second preset threshold to obtain a second comparison result;

[0013] According to the first comparison result and the second comparison result, it is determined whether the cylindrical battery to be tested has a double busbar.

[0014] Optionally, the comparing the first black shadow surface of each hole area with a first preset threshold value to obtain a first comparison result includes:

[0015] Comparing the first black shadow surface of each hole area with a first preset threshold value to determine whether there is an abnormality in the hole area;

[0016] When the first black shadow surface of each hole area is larger than a first preset threshold, it is determined that an abnormality exists in the hole area;

[0017] When the first black shadow surface of any of the hole areas is greater than a first preset threshold, or when the first black shadow surface of each of the hole areas is less than or equal to the first preset threshold, it is determined that there is no abnormality in the hole area.

[0018] Optionally, the comparing the second black shadow area of ​​the inner circular region with a second preset threshold to obtain a second comparison result includes:

[0019] Comparing the second black shadow area of ​​the inner circular area with a second preset threshold to determine whether there is an abnormality in the inner circular area;

[0020] When the second black shadow area of ​​the inner circular area is greater than a second preset threshold, it is determined that an abnormality exists in the inner circular area;

[0021] When the second black shadow area of ​​the inner annular region is smaller than or equal to a second preset threshold, it is determined that there is no abnormality in the inner annular region.

[0022] Optionally, determining whether the cylindrical battery to be tested has a dual busbar according to the first comparison result and the second comparison result includes:

[0023] When the first comparison result is that the first black shadow surface of each of the hole areas is larger than a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is larger than a second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar;

[0024] or,

[0025] When the first comparison result is that the first black shadow area of ​​each of the hole areas is respectively greater than a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is less than or equal to a second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar;

[0026] or,

[0027] When the first comparison result is that the first black shadow area of ​​any of the hole areas is larger than a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is larger than a second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar;

[0028] or,

[0029] When the first comparison result is that the first black shadow surface of any of the hole areas is less than or equal to the first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is greater than the second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar.

[0030] Optionally, determining whether the cylindrical battery to be tested has a dual busbar according to the first comparison result and the second comparison result further includes:

[0031] When the first comparison result is that the first black shadow surface of any of the hole areas is less than or equal to a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is less than or equal to a second preset threshold, it is determined that the cylindrical battery to be tested does not have a dual busbar;

[0032] or,

[0033] When the first comparison result is that the first black shadow surface of any of the hole areas is less than or equal to the first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is greater than the second preset threshold, it is determined that the cylindrical battery to be tested does not have a dual busbar.

[0034] Optionally, after determining whether the cylindrical battery to be tested has a double busbar according to the first black shadow area, the second black shadow area, and a preset threshold, the method further includes:

[0035] When it is determined that the cylindrical battery to be tested has dual busbars, a detection image of the cylindrical battery to be tested having dual busbars is stored.

[0036] Optionally, the calculating the first black shadow area of each hole region and the second black shadow area of the inner ring circular region according to the pixel size of each hole region and the inner ring circular region respectively comprises:

[0037] calculating the first black shadow area of each hole region according to the pixel size of each hole region;

[0038] calculating the second black shadow area of the inner ring circular region according to the pixel size of the inner ring circular region.

[0039] According to another aspect of the present application, an electronic device is provided, the electronic device comprising:

[0040] at least one processor; and

[0041] a memory connected with the at least one processor in communication; wherein,

[0042] the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the detection method of the double bus bar of the cylindrical battery as described in any of the embodiments of the present application.

[0043] According to another aspect of the present application, a computer readable storage medium is provided, the computer readable storage medium stores computer instructions for enabling a processor to implement the detection method of the double bus bar of the cylindrical battery as described in any of the embodiments of the present application when executed by the processor.

[0044] The embodiment of the present invention provides a method, electronic device and storage medium for detecting dual busbars of cylindrical batteries. The method includes: obtaining an image of the cylindrical battery to be tested after welding the busbar, and identifying the hole area and the inner circle area in the image; according to the pixel size of each hole area and the inner circle area, respectively calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circle area; according to the first black shadow area, the second black shadow area and the preset threshold, determining whether the cylindrical battery to be tested has dual busbars. The technical solution provided by the embodiment of the present invention, based on the existing CCD detection, adds shadow area calculation and judgment logic, by obtaining a global image, extracting the geometric features of the holes and the inner circle in the image, respectively calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circle area; according to the first black shadow area, the second black shadow area and the preset threshold, determining whether the cylindrical battery to be tested has dual busbars. On the one hand, it is not affected by the welding deformation or welding point offset of the double busbar, and features can still be extracted for identification. It will not cause contact resistance changes due to long-term wear of the probe, thereby misjudging the double busbar as a single busbar, resulting in missed kills. On the other hand, it can effectively prevent the resistance value from being affected by welding quality and contact area. When the double busbar is poorly soldered, the contact resistance is high and the resistance value is close to that of a single busbar, thereby misjudging the double busbar as a single busbar, resulting in missed kills. In summary, the technical solution provided by the embodiment of the present invention does not require additional hardware investment, can effectively prevent the outflow of defective products, reduce costs and missed kill rates, and improve product quality.

[0045] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 A flow chart of a method for detecting a dual busbar for a cylindrical battery provided by an embodiment of the present invention;

[0048] Figure 2 Schematic diagram of imaging the hole area and inner circular area of ​​a normal single busbar under CCD provided by an embodiment of the present invention;

[0049] Figure 3A schematic diagram of imaging the hole area and inner circular area of ​​a dual busbar under a CCD according to an embodiment of the present invention;

[0050] Figure 4 A flow chart of another method for detecting a dual busbar for cylindrical batteries provided by an embodiment of the present invention;

[0051] Figure 5 A schematic structural diagram of an electronic device for a method for detecting a dual busbar for a cylindrical battery provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0052] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0053] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes 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.

[0054] Figure 1 This is a flow chart of a method for detecting a dual busbar for a cylindrical battery provided by an embodiment of the present invention. This embodiment is applicable to detecting and identifying whether a cylindrical battery has a dual busbar. This method can be performed by a detection device for a dual busbar for a cylindrical battery. The detection device can be implemented in the form of hardware or software and can be configured in any electronic device with communication capabilities. Figure 1 , the method comprising:

[0055] S110, obtaining an image of the cylindrical battery to be tested after welding the busbar, and identifying the hole area and the inner circular area in the image.

[0056] Specifically, in the visual inspection link of the battery production line, cylindrical batteries with welded busbars are photographed through industrial cameras, such as charge-coupled device (CCD) cameras or complementary metal-oxide-semiconductor (CMOS) cameras, to obtain high-definition images of the cylindrical batteries to be tested after welding the busbars. Visual algorithms, such as edge detection, threshold segmentation, and template matching, are used to locate the position, shape, and size of the holes in the image, as well as the inner and outer diameters of the inner circle.

[0057] Figure 2 Schematic diagram of imaging of the hole area and inner circular area of ​​a normal single busbar under CCD provided by an embodiment of the present invention, see Figure 2 There are three holes and three inner circles in the figure. The outer diameter of the inner circle refers to the distance between the highest point of the outer edge of the inner circle and the center of the circle. The inner diameter of the inner circle refers to the distance between the highest point of the inner edge of the inner circle and the center of the circle. The highest points of the outer edges of the three inner circles are connected together to form a circle. The highest points of the inner edges of the three inner circles are connected together to form a circle. The above two circles form a ring circle.

[0058] S120 , calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circular area according to the pixel sizes of each hole area and the inner circular area.

[0059] Among them, the first black shadow area refers to the three holes, and the black shadow area of ​​each hole; the second black shadow area refers to the highest points of the outer edges of the three inner ring circles connected together to form a circle, and the highest points of the inner edges of the three inner ring circles connected together to form a circle, and the above two circles form a circular circle, and the total black shadow area within the circular circle.

[0060] Specifically, all black shadow area pixels within the outline of each hole area are extracted, and all black shadow area pixels within the annular circle area determined by its center and radius are extracted for the inner annular circle area. The number of pixels in each hole area is counted, and the black shadow area of ​​each hole can be obtained according to the product of the number of pixels and the area of ​​a single pixel. Similarly, the number of pixels in the annular circle area determined by its center and radius is extracted for the inner annular circle area, and the number of pixels in it is counted. The total black shadow area within the annular circle can be obtained according to the product of the number of pixels and the area of ​​a single pixel.

[0061] S130: Determine whether the cylindrical battery to be tested has a double busbar based on the first black shadow area, the second black shadow area, and a preset threshold.

[0062] The preset threshold can be pre-set based on a comprehensive evaluation of the color difference of incoming materials from the busbar and the CCD light sources of different machines.

[0063] Specifically, the first black shadow area of ​​each hole area is compared with the area setting value of the hole area to determine whether there is an abnormality in the hole area. If and only if the first black shadow area of ​​each hole area is greater than the area setting value of the hole area, it is determined that there is an abnormality in the hole area. Similarly, the second black shadow area of ​​the inner circle area is compared with the area setting value of the inner circle area to determine whether there is an abnormality in the inner circle area. If the second black shadow area of ​​the inner circle area is greater than the area setting value of the inner circle area, it is determined that there is an abnormality in the inner circle area. As long as there is an abnormality in either the hole area or the inner circle area, it is determined that the cylindrical battery to be tested has a double busbar. For example, Figure 3 As shown, Figure 3 A schematic diagram of imaging the hole area and inner circular area of ​​a double busbar under a CCD provided in an embodiment of the present invention.

[0064] The embodiment of the present invention provides a method, electronic device and storage medium for detecting dual busbars of cylindrical batteries. The method includes: obtaining an image of the cylindrical battery to be tested after welding the busbar, and identifying the hole area and the inner circle area in the image; according to the pixel size of each hole area and the inner circle area, respectively calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circle area; according to the first black shadow area, the second black shadow area and the preset threshold, determining whether the cylindrical battery to be tested has dual busbars. The technical solution provided by the embodiment of the present invention, based on the existing CCD detection, adds shadow area calculation and judgment logic, by obtaining a global image, extracting the geometric features of the holes and the inner circle in the image, respectively calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circle area; according to the first black shadow area, the second black shadow area and the preset threshold, determining whether the cylindrical battery to be tested has dual busbars. On the one hand, it is not affected by the welding deformation or welding point offset of the double busbar, and features can still be extracted for identification. It will not cause contact resistance changes due to long-term wear of the probe, thereby misjudging the double busbar as a single busbar, resulting in missed kills. On the other hand, it can effectively prevent the resistance value from being affected by welding quality and contact area. When the double busbar is poorly soldered, the contact resistance is high and the resistance value is close to that of a single busbar, thereby misjudging the double busbar as a single busbar, resulting in missed kills. In summary, the technical solution provided by the embodiment of the present invention does not require additional hardware investment, can effectively prevent the outflow of defective products, reduce costs and missed kill rates, and improve product quality.

[0065] Figure 4This is a flow chart of another method for detecting a double busbar for cylindrical batteries provided by an embodiment of the present invention. Based on the above embodiment, the embodiment of the present invention further refines step S130. Optionally, the preset threshold includes a first preset threshold and a second preset threshold; see Figure 4 , step S130 specifically includes:

[0066] S210 : Compare the first black shadow surface of each hole area with a first preset threshold value to obtain a first comparison result.

[0067] Specifically, the first black shadow surface of each hole area is compared with the first preset threshold to determine whether there is an abnormality in the hole area; when the first black shadow surface of each hole area is greater than the first preset threshold, it is determined that there is an abnormality in the hole area; when the first black shadow surface of any hole area is greater than the first preset threshold, or when the first black shadow surface of each hole area is less than or equal to the first preset threshold, it is determined that there is no abnormality in the hole area.

[0068] S220: Compare the second black shadow area of ​​the inner circular region with a second preset threshold to obtain a second comparison result.

[0069] Specifically, the second black shadow area of ​​the inner circle area is compared with the second preset threshold to determine whether there is an abnormality in the inner circle area; when the second black shadow area of ​​the inner circle area is greater than the second preset threshold, it is determined that there is an abnormality in the inner circle area; when the second black shadow area of ​​the inner circle area is less than or equal to the second preset threshold, it is determined that there is no abnormality in the inner circle area.

[0070] S230: Determine whether the cylindrical battery to be tested has dual busbars based on the first comparison result and the second comparison result.

[0071] Specifically, when any one of the first comparison result and the second comparison result is abnormal, it is determined that the cylindrical battery to be tested has a double busbar.

[0072] Exemplarily, when the first comparison result is that the first black shadow surface of each hole area is greater than the first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circle area is greater than the second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar.

[0073] or,

[0074] When the first comparison result is that the first black shadow surface of each hole area is greater than the first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circle area is less than or equal to the second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar.

[0075] Or,

[0076] When the first comparison result is that the first black shadow area of any hole region is greater than the first preset threshold, or when the second comparison result is that the second black shadow area of the inner ring circular region is greater than the second preset threshold, it is determined that the to-be-tested cylindrical battery has double bus bars.

[0077] Or,

[0078] When the first comparison result is that the first black shadow area of any hole region is less than or equal to the first preset threshold, or when the second comparison result is that the second black shadow area of the inner ring circular region is greater than the second preset threshold, it is determined that the to-be-tested cylindrical battery has double bus bars.

[0079] Or,

[0080] When the first comparison result is that the first black shadow area of any hole region is less than or equal to the first preset threshold, or when the second comparison result is that the second black shadow area of the inner ring circular region is less than or equal to the second preset threshold, it is determined that the to-be-tested cylindrical battery has no double bus bars.

[0081] Or,

[0082] When the first comparison result is that the first black shadow area of any hole region is less than or equal to the first preset threshold, or when the second comparison result is that the second black shadow area of the inner ring circular region is greater than the second preset threshold, it is determined that the to-be-tested cylindrical battery has no double bus bars.

[0083] Optionally, after step S130, the method further comprises:

[0084] In a case where it is determined that the to-be-tested cylindrical battery has double bus bars, the detection imaging of the to-be-tested cylindrical battery having double bus bars is stored.

[0085] Specifically, after it is determined that the to-be-tested cylindrical battery has double bus bars, the CCD automatically saves the image data of the battery after the bus bar is welded, i.e., the original image or the processed feature image used for detection, so as to be traced, analyzed or archived subsequently. Further, after a large number of double bus bar image data are accumulated, the threshold can be adjusted through the historical image, so as to reduce the false negative rate or the false positive rate.

[0086] Optionally, step S120 specifically comprises:

[0087] According to the pixel size of each hole region, the first black shadow area of each hole region is calculated; and according to the pixel size of the inner ring circular region, the second black shadow area of the inner ring circular region is calculated.

[0088] Specifically, all black shadow area pixels within the outline of each hole area are extracted, and all black shadow area pixels within the annular circle area determined by its center and radius are extracted for the inner annular circle area. The number of pixels in each hole area is counted, and the black shadow area of ​​each hole can be obtained according to the product of the number of pixels and the area of ​​a single pixel. Similarly, the number of pixels in the annular circle area determined by its center and radius is extracted for the inner annular circle area, and the number of pixels in it is counted. The total black shadow area within the annular circle can be obtained according to the product of the number of pixels and the area of ​​a single pixel.

[0089] The technical solution provided by the embodiment of the present invention can achieve 100% full inspection of dual bus trays and store images without the need for new hardware investment costs, effectively preventing the outflow of defective products, reducing costs and missed kill rates, and improving product quality.

[0090] Figure 5 A schematic structural diagram of an electronic device for a method of detecting a dual busbar for a cylindrical battery provided in an embodiment of the present invention. The electronic device is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The electronic device may also represent various forms of mobile devices, such as personal digital processing, cellular phones, smart phones, wearable devices (such as helmets, glasses, watches, etc.) and other similar computing devices. The components shown herein, their connections and relationships, and their functions are provided for example only and are not intended to limit the implementation of the invention described and / or claimed herein.

[0091] like Figure 5 As shown, the electronic device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., which is communicatively connected to the at least one processor 11. The memory stores a computer program that can be executed by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 into the random access memory (RAM) 13. Various programs and data required for the operation of the electronic device 10 can also be stored in the RAM 13. The processor 11, ROM 12, and RAM 13 are connected to each other via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0092] Multiple components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a magnetic disk, an optical disk, etc.; and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0093] Processor 11 can be any general-purpose and / or specialized processing component with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various specialized artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any other suitable processor, controller, microcontroller, etc. Processor 11 executes the various methods and processes described above, such as a method for detecting a dual busbar for a cylindrical battery.

[0094] In some embodiments, the method for detecting a dual busbar for a cylindrical battery may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the method for detecting a dual busbar for a cylindrical battery described above may be performed. Alternatively, in other embodiments, the processor 11 may be configured to execute the method for detecting a dual busbar for a cylindrical battery by any other appropriate means (e.g., by means of firmware).

[0095] Various embodiments of the systems and techniques described herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), system-on-chip systems (SOCs), programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include being implemented in one or more computer programs that are executable and / or interpreted on a programmable system that includes at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0096] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when the computer program is executed by the processor, the functions / operations specified in the flowcharts and / or block diagrams are implemented. The computer program may be executed entirely on the machine, partially on the machine, as a stand-alone software package, partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0097] In the context of the present invention, computer-readable storage media can be tangible media that can contain or store a computer program for use with an instruction execution system, device or equipment or used in combination with an instruction execution system, device or equipment. Computer-readable storage media can include but are not limited to electronic, magnetic, optical, electromagnetic, infrared or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, computer-readable storage media can be machine-readable signal media. More specific examples of machine-readable storage media can include electrical connections based on one or more lines, portable computer disks, hard disks, random access memories (RAM), read-only memories (ROM), erasable programmable read-only memories (EPROM or flash memory), optical fibers, portable compact disk read-only memories (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0098] To provide interaction with a user, the systems and techniques described herein can be implemented on an electronic device having: a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user; and a keyboard and pointing device (e.g., a mouse or trackball) through which the user can provide input to the electronic device. Other types of devices can also be used to provide interaction with the user; for example, the feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including acoustic input, voice input, or tactile input).

[0099] The systems and techniques described herein can be implemented in a computing system that includes back-end components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes front-end components (e.g., a user computer with a graphical user interface or web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such back-end components, middleware components, or front-end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0100] A computing system may include clients and servers. The clients and servers are typically remote from each other and typically interact via a communication network. This client-server relationship arises through computer programs running on the respective computers, creating a client-server relationship. The server may be a cloud server, also known as a cloud computing server or cloud host. This server is a hosting product within the cloud computing service ecosystem that addresses the management difficulties and limited scalability of traditional physical hosting and VPS services.

[0101] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0102] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A method for detecting a double busbar of a cylindrical battery, characterized in that: include: Acquire an image of the cylindrical battery to be tested after welding the busbar, and identify the hole area and the inner circular area in the image; Calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circular area according to the pixel sizes of each hole area and the inner circular area; According to the first black shadow area, the second black shadow area and a preset threshold, it is determined whether the cylindrical battery to be tested has a double busbar.

2. The detection method according to claim 1, characterized in that The preset threshold includes a first preset threshold and a second preset threshold; The determining whether the cylindrical battery to be tested has dual busbars according to the first black shadow area, the second black shadow area, and a preset threshold value includes: Comparing the first black shadow surface of each hole area with a first preset threshold value to obtain a first comparison result; Comparing the second black shadow area of ​​the inner circular region with a second preset threshold to obtain a second comparison result; According to the first comparison result and the second comparison result, it is determined whether the cylindrical battery to be tested has a double busbar.

3. The detection method according to claim 2, characterized in that The step of comparing the first black shadow surface of each hole area with a first preset threshold to obtain a first comparison result includes: Comparing the first black shadow surface of each hole area with a first preset threshold value to determine whether there is an abnormality in the hole area; When the first black shadow surface of each hole area is larger than a first preset threshold, it is determined that an abnormality exists in the hole area; When the first black shadow surface of any of the hole areas is greater than a first preset threshold, or when the first black shadow surface of each of the hole areas is less than or equal to the first preset threshold, it is determined that there is no abnormality in the hole area.

4. The detection method according to claim 2, characterized in that The step of comparing the second black shadow area of ​​the inner circular region with a second preset threshold to obtain a second comparison result includes: Comparing the second black shadow area of ​​the inner circular area with a second preset threshold to determine whether there is an abnormality in the inner circular area; When the second black shadow area of ​​the inner circular area is greater than a second preset threshold, it is determined that an abnormality exists in the inner circular area; When the second black shadow area of ​​the inner annular region is smaller than or equal to a second preset threshold, it is determined that there is no abnormality in the inner annular region.

5. The detection method according to claim 2, wherein The determining, based on the first comparison result and the second comparison result, whether the cylindrical battery to be tested has dual busbars includes: When the first comparison result is that the first black shadow surface of each of the hole areas is larger than a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is larger than a second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar; or, When the first comparison result is that the first black shadow area of ​​each of the hole areas is respectively greater than a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is less than or equal to a second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar; or, When the first comparison result is that the first black shadow area of ​​any of the hole areas is larger than a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is larger than a second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar; or, When the first comparison result is that the first black shadow surface of any of the hole areas is less than or equal to the first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is greater than the second preset threshold, it is determined that the cylindrical battery to be tested has a double busbar.

6. The detection method according to claim 2, characterized in that The determining whether the cylindrical battery to be tested has a dual busbar according to the first comparison result and the second comparison result further includes: When the first comparison result is that the first black shadow surface of any of the hole areas is less than or equal to a first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is less than or equal to a second preset threshold, it is determined that the cylindrical battery to be tested does not have a dual busbar; or, When the first comparison result is that the first black shadow surface of any of the hole areas is less than or equal to the first preset threshold, or when the second comparison result is that the second black shadow area of ​​the inner circular area is greater than the second preset threshold, it is determined that the cylindrical battery to be tested does not have a dual busbar.

7. The detection method according to claim 1, characterized in that After determining whether the cylindrical battery to be tested has a double busbar according to the first black shadow area, the second black shadow area, and a preset threshold, the method further includes: When it is determined that the cylindrical battery to be tested has dual busbars, a detection image of the cylindrical battery to be tested having dual busbars is stored.

8. The detection method according to claim 1, wherein Calculating the first black shadow area of ​​each hole area and the second black shadow area of ​​the inner circular area according to the pixel sizes of each hole area and the inner circular area includes: Calculating the first black shadow area of ​​each hole region according to the pixel size of each hole region; The second black shadow area of ​​the inner circular area is calculated according to the pixel size of the inner circular area.

9. An electronic device, characterized in that: The electronic device comprises: at least one processor; and a memory communicatively connected to the at least one processor; wherein, The memory stores a computer program that can be executed by the at least one processor, and the computer program is executed by the at least one processor so that the at least one processor can execute the method for detecting a double busbar for a cylindrical battery according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores computer instructions, and the computer instructions are used to enable a processor to implement the method for detecting a dual busbar for cylindrical batteries according to any one of claims 1 to 8 when executed.

Images