A lithium battery detection method, system, computer device and readable storage medium

Abstract

The application provides a lithium battery detection method, system, computer device and readable storage medium, wherein the image acquisition module acquires the positive plate image data of the positive plate of the target lithium battery, acquires the negative plate image data of the negative plate of the target lithium battery, and acquires the diaphragm image data of the diaphragm of the target lithium battery; the image processing module generates the target image according to the positive plate image data, the negative plate image data and the diaphragm image data; the image detection module judges whether the distance between the positive plate edge and the diaphragm edge in at least one direction in the target image exceeds the standard distance value, and judges whether the distance between the negative plate edge and the diaphragm edge in at least one direction in the target image exceeds the standard distance value; if yes, the image detection module marks the state of the target lithium battery as normal. The above method is used to determine the state of the lithium battery.

Description

Technical Field

[0001] This invention relates to the field of battery manufacturing, and more specifically, to a lithium battery testing method, system, computer equipment, and readable storage medium. Background Technology

[0002] With the continuous breakthroughs and development of battery technology, composite lamination technology has gradually gained favor from users and technicians due to its advantages such as neat and beautiful appearance, resistance to deformation, high energy density, and ability to be manufactured into any shape. In lithium battery structures using composite lamination technology, the separator is one of the key inner components. The performance of the separator determines the battery's interface structure, internal resistance, etc., and directly affects the battery's capacity, cycle life, and safety performance. A high-performance separator plays an important role in improving the overall performance of the battery. The main function of the separator is to separate the positive and negative electrodes of the battery to prevent short circuits caused by contact between the two electrodes. Therefore, the battery can only be put into normal use when the separator can completely separate the positive and negative electrodes.

[0003] The inventors discovered during their research that during the production process of lithium batteries, due to low precision of the production equipment or operational errors by production personnel, the separator may not be able to completely separate the positive and negative electrodes of the battery. If such batteries are used directly to power the target device, it may cause a short circuit and damage the target device. Therefore, in order to avoid the above situation, how to determine the state of the lithium battery before it is put into use has become an urgent problem to be solved. Summary of the Invention

[0004] In view of this, the purpose of the present invention is to provide a lithium battery detection method, system, computer device and readable storage medium for determining the state of a lithium battery.

[0005] In a first aspect, embodiments of this application provide a lithium battery detection method, applied to a lithium battery detection system, the lithium battery detection system including an image acquisition module, an image processing module, and an image detection module, the method comprising:

[0006] The image acquisition module acquires images of the positive electrode of the target lithium battery to obtain positive electrode image data, acquires images of the negative electrode of the target lithium battery to obtain negative electrode image data, and acquires images of the separator of the target lithium battery to obtain separator image data.

[0007] The image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, wherein the target image is used to indicate the position and shape of the positive electrode, the negative electrode, and the separator;

[0008] The image detection module determines whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value, and determines whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value.

[0009] If the distance between the edge of the positive electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, and the distance between the edge of the negative electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, the image detection module will mark the target lithium battery as normal.

[0010] Optionally, after the image detection module determines whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset orientation does not exceed a preset standard distance value, and determines whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset orientation does not exceed a preset standard distance value, the method further includes:

[0011] If there is a location where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value, or if there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value, the image detection module will mark the state of the target lithium battery as abnormal.

[0012] Optionally, the lithium battery detection system further includes a battery processing module. After the image detection module determines whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset orientation does not exceed a preset standard distance value, and determines whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset orientation does not exceed a preset standard distance value, the method further includes:

[0013] If there is a location where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value, the image detection module will send the position information of the positive electrode to the battery processing module.

[0014] The battery processing module removes the positive electrode from the target lithium battery based on the position information of the positive electrode.

[0015] If there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value, the image detection module will send the position information of the negative electrode to the battery processing module.

[0016] The battery processing module removes the negative electrode from the target lithium battery based on the position information of the negative electrode.

[0017] Optionally, the image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, including:

[0018] The image processing module generates electrode image data based on the pixel information in the positive electrode image data and the pixel information in the negative electrode image data;

[0019] The image processing module parses the electrode image data to obtain first synchronization control information and first valid image data, and parses the diaphragm image data to obtain second synchronization control information and second valid image data. The first synchronization control information includes line signals and field signals in the electrode image data, the first valid image data is the image content in the electrode image data, and the second synchronization control information includes line signals and field signals in the diaphragm image data. The second valid image data is the image content in the diaphragm image data.

[0020] The image processing module generates the target image based on the first synchronization control information, the first valid image data, the second synchronization control information, and the second valid image data.

[0021] Optionally, the system further includes an image display module, and after the image detection module marks the state of the target lithium battery as abnormal, the method further includes:

[0022] The image display module responds to the image display command issued by the user and displays the target image and the status of the target lithium battery on the display according to the display method indicated by the image display command.

[0023] Optionally, the system further includes an image storage module. After the image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, the method further includes:

[0024] The image storage module stores the target image in a double-rate synchronous dynamic random access memory.

[0025] Optionally, the image processing module and the image detection module are programmable array logic chips.

[0026] Secondly, embodiments of this application provide a lithium battery detection system, which includes an image acquisition module, an image processing module, and an image detection module;

[0027] The image acquisition module is used to acquire images of the positive electrode of the target lithium battery to obtain positive electrode image data, acquire images of the negative electrode of the target lithium battery to obtain negative electrode image data, and acquire images of the separator of the target lithium battery to obtain separator image data.

[0028] The image processing module is used to generate a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, wherein the target image is used to indicate the position and shape of the positive electrode, the negative electrode, and the separator;

[0029] The image detection module is used to determine whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value, and to determine whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value.

[0030] If the distance between the edge of the positive electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, and the distance between the edge of the negative electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, the image detection module is used to mark the state of the target lithium battery as normal.

[0031] Optionally, the image detection module is further configured to, after determining whether the distance between the edge of the positive electrode and the edge of the separator in the target image at at least one preset location does not exceed a preset standard distance value, and after determining whether the distance between the edge of the negative electrode and the edge of the separator in the target image at at least one preset location does not exceed the preset standard distance value, mark the state of the target lithium battery as abnormal if there is a location where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value, or if there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value.

[0032] Optionally, the lithium battery detection system further includes a battery processing module. After the image detection module determines whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value, and determines whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset position does not exceed the preset standard distance value, the image detection module is further configured to send the position information of the positive electrode to the battery processing module if there is a position where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value.

[0033] The battery processing module is used to remove the positive electrode from the target lithium battery based on the position information of the positive electrode.

[0034] If there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value, the image detection module is used to send the position information of the negative electrode to the battery processing module.

[0035] The battery processing module is used to remove the negative electrode from the target lithium battery based on the position information of the negative electrode.

[0036] Optionally, when the image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, it is specifically used for:

[0037] Electrode image data is generated based on the pixel information in the positive electrode image data and the pixel information in the negative electrode image data;

[0038] The electrode image data is parsed to obtain first synchronization control information and first effective image data, and the diaphragm image data is parsed to obtain second synchronization control information and second effective image data. The first synchronization control information includes line signals and field signals in the electrode image data, the first effective image data is the image content in the electrode image data, and the second synchronization control information includes line signals and field signals in the diaphragm image data. The second effective image data is the image content in the diaphragm image data.

[0039] The target image is generated based on the first synchronization control information, the first valid image data, the second synchronization control information, and the second valid image data.

[0040] Optionally, the system further includes an image display module, which is used to respond to an image display command issued by the user after the image detection module marks the state of the target lithium battery as abnormal, and display the target image and the state of the target lithium battery on the display according to the display method indicated by the image display command.

[0041] Optionally, the system further includes an image storage module, which is used to store the target image in a double-rate synchronous dynamic random access memory after the image processing module generates the target image based on the positive electrode image data, the negative electrode image data and the diaphragm image data.

[0042] Optionally, the image processing module and the image detection module are programmable array logic chips.

[0043] Thirdly, embodiments of this application provide a computer device, including: a processor, a memory, and a bus. The memory stores machine-readable instructions executable by the processor. When the computer device is running, the processor communicates with the memory via the bus. When the machine-readable instructions are executed by the processor, the steps of the lithium battery detection method in any of the optional embodiments of the first aspect are performed.

[0044] Fourthly, embodiments of this application provide a computer-readable storage medium storing a computer program, which, when executed by a processor, performs the steps of the lithium battery detection method in any of the optional embodiments of the first aspect described above.

[0045] The technical solution provided in this application includes, but is not limited to, the following beneficial effects:

[0046] The image acquisition module acquires images of the positive electrode of the target lithium battery to obtain positive electrode image data, acquires images of the negative electrode of the target lithium battery to obtain negative electrode image data, and acquires images of the separator of the target lithium battery to obtain separator image data. The image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, wherein the target image is used to indicate the position and shape of the positive electrode, the negative electrode, and the separator. Through the above steps, a target image containing the position and shape information between each electrode and the separator of the lithium battery can be obtained.

[0047] The image detection module determines whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value, and also determines whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value. If the distance between the edge of the positive electrode and the edge of the separator in at least one position does not exceed the standard distance value, and the distance between the edge of the negative electrode and the edge of the separator in at least one position does not exceed the standard distance value, the image detection module marks the state of the target lithium battery as normal. Through the above steps, the battery state of the target lithium battery can be determined as normal based on the position and shape information between each electrode and the separator in the target image.

[0048] Using the above method, image data of each electrode and separator of the lithium battery is acquired before the lithium battery is put into use. Then, a target image containing the position and shape information between the electrode and the separator is generated based on the image data of each electrode and the separator. The positions between the electrode and the separator in the target image are compared, and the state of the target lithium battery is judged based on the comparison results, so as to determine the state of the lithium battery.

[0049] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0050] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0051] Figure 1 A flowchart of a lithium battery testing method provided in Embodiment 1 of the present invention is shown;

[0052] Figure 2 A schematic diagram of an image acquisition method provided in Embodiment 1 of the present invention is shown;

[0053] Figure 3 A flowchart of a target image generation method provided in Embodiment 1 of the present invention is shown;

[0054] Figure 4 A schematic diagram of the structure of a lithium battery detection system provided in Embodiment 2 of the present invention is shown;

[0055] Figure 5 A schematic diagram of the structure of the second lithium battery detection system provided in Embodiment 2 of the present invention is shown;

[0056] Figure 6 This shows a schematic diagram of the third lithium battery testing system provided in Embodiment 2 of the present invention;

[0057] Figure 7 A schematic diagram of the structure of the fourth lithium battery detection system provided in Embodiment 2 of the present invention is shown;

[0058] Figure 8 A schematic diagram of the structure of a computer device provided in Embodiment 3 of the present invention is shown. Detailed Implementation

[0059] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0060] Example 1

[0061] To facilitate understanding of this application, the following is combined with... Figure 1 The flowchart of the lithium battery testing method provided in Embodiment 1 of the present invention will be described in detail for Embodiment 1 of this application.

[0062] See Figure 1 As shown, Figure 1 The flowchart of a lithium battery detection method according to Embodiment 1 of the present invention is shown. The method is applied to a lithium battery detection system, which includes an image acquisition module, an image processing module, and an image detection module. The method includes steps S101 to S104:

[0063] S101: The image acquisition module acquires images of the positive electrode of the target lithium battery to obtain positive electrode image data, acquires images of the negative electrode of the target lithium battery to obtain negative electrode image data, and acquires images of the separator of the target lithium battery to obtain separator image data.

[0064] Specifically, the image acquisition module includes a line scan camera, which uses a line scan sensor. When acquiring electrode and diaphragm image data, it acquires one row of images at a time. The relative movement between the electrode and / or diaphragm and the line scan camera enables continuous acquisition of images of the electrode and / or diaphragm. Then, several rows of images are stitched together to output a complete image. During image acquisition, a specific light source, namely a line light source, is provided to ensure that the imaging area of ​​the line scan camera receives sufficient illumination. Due to the special nature of the imaging area of ​​the line scan camera, it ensures uniform brightness along a line in the composite area of ​​the electrode and / or diaphragm, and the brightness meets the requirements for the line scan camera to take pictures.

[0065] See Figure 2 As shown, Figure 2The diagram illustrates an image acquisition method according to Embodiment 1 of the present invention. For example, when the electrodes of a target lithium battery are divided into three parts (a first row, a second row, and a third row), the camera first moves from the leftmost end of the first row to the right, acquiring images in real time during the movement. After the camera completes image acquisition of the first row, it moves from the leftmost end of the second row to the right, acquiring images in real time during the movement. After the camera completes image acquisition of the second row, it moves from the leftmost end of the third row to the right, acquiring images in real time during the movement. After the camera completes image acquisition of all parts, the images from several rows are stitched together to output a complete image.

[0066] The so-called line light source refers to the use of a cylindrical focusing lens to further focus a high-brightness LED light source into an ultra-high line light, which has excellent uniformity and consistency, and its illumination length can be designed according to the size of the electrode and / or the detection feature. In order to avoid the line formed by the light source at a specified distance not being on the same straight line as the line scan camera's imaging line, which would prevent the line scan camera from taking pictures normally, the line light source is not adjusted to ensure that the line formed by the light source at the specified distance of the line scan camera's imaging line is on the same straight line as the line scan camera's imaging line, and provides sufficient brightness. This allows the line light source to be quickly and accurately adjusted according to the needs of the line scan camera to make the line where the line light source is located parallel to the line where the line scan camera is shooting, so that the line where the line light source is located coincides with the line where the line scan camera is shooting. The line where the line light source is located is on the same straight line as the line scan camera's imaging line at a specified distance position, and has high brightness at the specified position.

[0067] It is worth noting that this application applies to non-irregularly shaped electrode cells, such as when the electrode cell is rectangular or square.

[0068] S102: The image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, wherein the target image is used to indicate the position and shape of the positive electrode, the negative electrode, and the separator.

[0069] Specifically, based on the positive electrode image data, negative electrode image data, and membrane image data captured by the camera of the line array camera, a target image is generated to indicate the position and shape of the positive electrode, the negative electrode, and the membrane.

[0070] S103: The image detection module determines whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value, and determines whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value.

[0071] Specifically, in the production process of lithium batteries, it is necessary to ensure that the distance between the edge of the electrode sheet and the edge of the separator in at least one preset position (e.g., 8 positions: up, down, left, right, upper left, lower left, upper right, and lower right) does not exceed the preset standard distance value. Otherwise, the battery will not be able to charge and discharge normally. Therefore, after obtaining the target image, the image detection module determines whether the distance between the edge of the positive electrode sheet and the edge of the separator in the target image in at least one preset position does not exceed the preset standard distance value, and also determines whether the distance between the edge of the negative electrode sheet and the edge of the separator in the target image in at least one preset position does not exceed the preset standard distance value.

[0072] S104: If the distance between the edge of the positive electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, and the distance between the edge of the negative electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, the image detection module marks the state of the target lithium battery as normal.

[0073] Specifically, when the distance between the edge of the positive electrode and the edge of the negative electrode of the target lithium battery and the edge of the separator in each orientation does not exceed the standard distance value, the target lithium battery is marked as normal.

[0074] In a feasible implementation, after the image detection module determines whether the distances between the edge of the positive electrode and the edge of the separator in the target image at at least one preset orientation do not exceed a preset standard distance value, and determines whether the distances between the edge of the negative electrode and the edge of the separator in the target image at at least one preset orientation do not exceed a preset standard distance value, the method further includes:

[0075] If there is a location where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value, or if there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value, the image detection module will mark the state of the target lithium battery as abnormal.

[0076] Specifically, if the distance between the edge of the positive electrode and the edge of the separator in a certain direction exceeds a preset standard distance value, or if the distance between the edge of the negative electrode and the edge of the separator in a certain direction exceeds a preset standard distance value, then the state of the target lithium battery will be marked as abnormal.

[0077] In one feasible implementation, the lithium battery detection system further includes a battery processing module. After the image detection module determines whether the distances between the edge of the positive electrode and the edge of the separator in the target image at at least one preset orientation do not exceed preset standard distance values, and determines whether the distances between the edge of the negative electrode and the edge of the separator in the target image at at least one preset orientation do not exceed preset standard distance values, the method further includes:

[0078] If there is a location where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value, the image detection module sends the position information of the positive electrode to the battery processing module; the battery processing module removes the positive electrode from the target lithium battery based on the position information of the positive electrode.

[0079] Specifically, the battery processing module can perform processes such as rejection of electrode sheets based on the electrode sheet information sent by the image detection module. When the positive electrode sheet in the target lithium battery does not meet the requirements, the battery processing module will reject the positive electrode sheet.

[0080] If there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value, the image detection module sends the position information of the negative electrode to the battery processing module; the battery processing module removes the negative electrode from the target lithium battery based on the position information of the negative electrode.

[0081] Specifically, when the negative electrode in the target lithium battery does not meet the requirements, the battery processing module will reject the negative electrode.

[0082] In one feasible implementation plan, see Figure 3 As shown, Figure 3 The flowchart illustrates a target image generation method according to Embodiment 1 of the present invention, wherein the image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the diaphragm image data, including steps S301 to S303:

[0083] S301: The image processing module generates electrode image data based on the pixel information in the positive electrode image data and the pixel information in the negative electrode image data.

[0084] Specifically, the image is reconstructed based on the pixel values ​​of each pixel in the electrode image data and the pixel values ​​of each pixel in the diaphragm image data to obtain the electrode image data.

[0085] S302: The image processing module parses the electrode image data to obtain first synchronization control information and first valid image data, and parses the diaphragm image data to obtain second synchronization control information and second valid image data. The first synchronization control information includes line signals and field signals in the electrode image data, the first valid image data is the image content in the electrode image data, and the second synchronization control information includes line signals and field signals in the diaphragm image data. The second valid image data is the image content in the diaphragm image data.

[0086] Specifically, the acquired electrode image data is parsed to obtain the first synchronization control information and the first valid image data. The FPGA (Field Programmable Gate Array) chip can acquire and parse the electrode source image data transmitted by each camera through the MIPI (Mobile Industry Processor Interface) input / output port. For example, if there are four cameras in the image output system, the electrode source image data transmitted by each of the four cameras can be acquired through the MIPI input / output port, resulting in four sets of electrode source image data. After acquiring these four sets of electrode source image data, they are parsed to obtain the first synchronization control information and the first valid image data. The first synchronization control information is used to indicate control information such as line and field signals in the electrode source image data, and the first valid image data is the actual image content acquired by the camera (the electrode image data consists of the electrode source image data acquired by each camera).

[0087] The first synchronization control information of the above-mentioned electrode image data can be obtained in the following way: capturing the synchronization information field of the electrode source image data; capturing the data segment of the electrode source image data with the field synchronization information flag bit; capturing the data segment of the electrode source image data with the line synchronization information flag bit; capturing the image content of all electrode source image data, and obtaining the first synchronization control information based on the synchronization information field, the data segment with the field synchronization information flag bit and the data segment with the line synchronization information flag bit. The image content of all electrode source image data is the first valid image data.

[0088] It is worth noting that, by referring to the above method, diaphragm source image data, as well as second synchronization control information and second effective image data, can be obtained.

[0089] S303: The image processing module generates the target image based on the first synchronization control information, the first valid image data, the second synchronization control information, and the second valid image data.

[0090] Specifically, the parsed first synchronization control information, first valid image data, second synchronization control information, and second valid image data are synchronized to obtain the target image.

[0091] In one feasible implementation, the system further includes an image display module, and after the image detection module marks the state of the target lithium battery as abnormal, the method further includes:

[0092] The image display module responds to the image display command issued by the user and displays the target image and the status of the target lithium battery on the display according to the display method indicated by the image display command.

[0093] Specifically, the user can send a display command through the user terminal. The image display module receives the display command sent by the user through the user terminal and parses the display command to obtain display mode indication information. This display mode indication information is used to indicate how the image output system will display the image on the monitor and which camera's source image to select.

[0094] The image display module responds to the image display command issued by the user, converts the target image to the format corresponding to the display, and outputs it to the display for display.

[0095] In one feasible implementation, the system further includes an image storage module, and after the image processing module generates a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, the method further includes:

[0096] The image storage module stores the target image in a double-rate synchronous dynamic random access memory.

[0097] Specifically, compared with traditional single data rate memory, DDR (Double Data Rate) memory technology enables two read and write operations within one clock cycle, that is, one read and one write operation are performed on the rising edge and the falling edge of the clock, respectively, giving DDR memory a speed advantage.

[0098] When storing images, you can store the target image or store each source image that generates the target image, with each source image being captured and acquired by a different camera.

[0099] When storing each source image that generates the target image, if the display mode indication information is used to indicate that cameras 1, 2, 3, and 4 should be processed and displayed, then the electrode source image data corresponding to each of cameras 1, 2, 3, and 4 will be acquired, processed, and the processed electrode source image data will be stored in the memory. At the same time, after processing the diaphragm source image data corresponding to the target camera, the processed diaphragm source image data will be stored in the DDR memory.

[0100] In one feasible implementation, the image processing module and the image detection module are programmable array logic chips.

[0101] Specifically, based on the characteristics of FPGA chips, the number of DDR controller modules can be dynamically adjusted. Therefore, this design has good scalability. Users can dynamically configure the number of DDR controller modules and further dynamically configure the connected off-chip DDR memory through the DDR controller modules to achieve the purpose of dynamically configurable functions and data of off-chip DDR memory, which helps users to quickly apply DDR memory.

[0102] Example 2

[0103] See Figure 4 As shown, Figure 4 A schematic diagram of a lithium battery detection system provided in Embodiment 2 of the present invention is shown, wherein the lithium battery detection system includes an image acquisition module 401, an image processing module 402 and an image detection module 403;

[0104] The image acquisition module is used to acquire images of the positive electrode of the target lithium battery to obtain positive electrode image data, acquire images of the negative electrode of the target lithium battery to obtain negative electrode image data, and acquire images of the separator of the target lithium battery to obtain separator image data.

[0105] The image processing module is used to generate a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, wherein the target image is used to indicate the position and shape of the positive electrode, the negative electrode, and the separator;

[0106] The image detection module is used to determine whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value, and to determine whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value.

[0107] If the distance between the edge of the positive electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, and the distance between the edge of the negative electrode and the edge of the separator in at least one orientation does not exceed the standard distance value, the image detection module is used to mark the state of the target lithium battery as normal.

[0108] In a feasible implementation, the image detection module is further configured to, after determining whether the distance between the edge of the positive electrode and the edge of the separator in the target image at at least one preset location does not exceed a preset standard distance value, and after determining whether the distance between the edge of the negative electrode and the edge of the separator in the target image at at least one preset location does not exceed the preset standard distance value, mark the state of the target lithium battery as abnormal if there is a location where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value, or if there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value.

[0109] In one feasible implementation plan, see Figure 5 As shown, Figure 5 A schematic diagram of the structure of a second lithium battery detection system provided in Embodiment 2 of the present invention is shown. The lithium battery detection system further includes a battery processing module 501. After the image detection module determines whether the distance between the edge of the positive electrode and the edge of the separator in the target image at least in a preset position does not exceed a preset standard distance value, and determines whether the distance between the edge of the negative electrode and the edge of the separator in the target image at least in a preset position does not exceed the preset standard distance value, the image detection module is further configured to send the position information of the positive electrode to the battery processing module if there is a position where the distance between the edge of the positive electrode and the edge of the separator exceeds the standard distance value.

[0110] The battery processing module is used to remove the positive electrode from the target lithium battery based on the position information of the positive electrode.

[0111] If there is a location where the distance between the edge of the negative electrode and the edge of the separator exceeds the standard distance value, the image detection module is used to send the position information of the negative electrode to the battery processing module.

[0112] The battery processing module is used to remove the negative electrode from the target lithium battery based on the position information of the negative electrode.

[0113] In one feasible implementation, the image processing module, when generating a target image based on the positive electrode image data, the negative electrode image data, and the separator image data, specifically performs the following:

[0114] Electrode image data is generated based on the pixel information in the positive electrode image data and the pixel information in the negative electrode image data;

[0115] The electrode image data is parsed to obtain first synchronization control information and first effective image data, and the diaphragm image data is parsed to obtain second synchronization control information and second effective image data. The first synchronization control information includes line signals and field signals in the electrode image data, the first effective image data is the image content in the electrode image data, and the second synchronization control information includes line signals and field signals in the diaphragm image data. The second effective image data is the image content in the diaphragm image data.

[0116] The target image is generated based on the first synchronization control information, the first valid image data, the second synchronization control information, and the second valid image data.

[0117] In one feasible implementation plan, see Figure 6 As shown, Figure 6 A schematic diagram of the structure of the third lithium battery detection system provided in Embodiment 2 of the present invention is shown. The system further includes an image display module 601. The image display module is used to respond to an image display command issued by the user after the image detection module marks the state of the target lithium battery as abnormal, and display the target image and the state of the target lithium battery on the display according to the display method indicated by the image display command.

[0118] In one feasible implementation plan, see Figure 7 As shown, Figure 7 A schematic diagram of the fourth lithium battery detection system provided in Embodiment 2 of the present invention is shown. The system further includes an image storage module 701, which is used to store the target image in a double-rate synchronous dynamic random access memory after the image processing module generates the target image based on the positive electrode image data, the negative electrode image data and the separator image data.

[0119] In one feasible implementation, the image processing module and the image detection module are programmable array logic chips.

[0120] Example 3

[0121] Based on the same application concept, see [link / reference] Figure 8 As shown, Figure 8 A schematic diagram of the structure of a computer device provided in Embodiment 3 of the present invention is shown, wherein, as Figure 8 As shown, the computer device 800 provided in Embodiment 3 of this application includes:

[0122] The system includes a processor 801, a memory 802, and a bus 803. The memory 802 stores machine-readable instructions that can be executed by the processor 801. When the computer device 800 is running, the processor 801 and the memory 802 communicate with each other via the bus 803. The machine-readable instructions are executed by the processor 801 to perform the steps of the lithium battery detection method shown in Embodiment 1 above.

[0123] Example 4

[0124] Based on the same concept, this application also provides a computer-readable storage medium storing a computer program, which, when run by a processor, executes the steps of the lithium battery detection method described in any of the above embodiments.

[0125] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the system and apparatus described above can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0126] The computer program product for lithium battery testing provided in this embodiment of the invention includes a computer-readable storage medium storing program code. The instructions included in the program code can be used to execute the methods in the preceding method embodiments. For specific implementation details, please refer to the method embodiments, which will not be repeated here.

[0127] The lithium battery testing system provided in this embodiment of the invention can be specific hardware on a device or software or firmware installed on the device. The system provided in this embodiment of the invention has the same implementation principle and technical effects as the aforementioned method embodiments. For the sake of brevity, any parts not mentioned in the system embodiments can be referred to the corresponding content in the aforementioned method embodiments. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can all be referred to the corresponding processes in the above method embodiments, and will not be repeated here.

[0128] In the embodiments provided by this invention, it should be understood that the disclosed systems and methods can be implemented in other ways. The system embodiments described above are merely illustrative. For example, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. Furthermore, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Additionally, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some communication interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0129] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0130] In addition, the functional units in the embodiments provided by the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0131] If a function is implemented as 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 this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0132] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0133] Finally, it should be noted that the above embodiments are merely specific implementations of the present invention, used to illustrate the technical solutions of the present invention, and not to limit it. The scope of protection of the present invention is not limited thereto. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that any person skilled in the art can still modify or easily conceive of changes to the technical solutions described in the foregoing embodiments within the scope of the technology disclosed in the present invention, or make equivalent substitutions for some of the technical features; and these modifications, changes, or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. All should be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A method of detecting a lithium battery, characterized by, The application is applied to a lithium battery detection system, which comprises an image acquisition module, an image processing module and an image detection module, and the method comprises the following steps: The image acquisition module acquires an image of a positive plate of a target lithium battery to obtain positive plate image data, acquires an image of a negative plate of the target lithium battery to obtain negative plate image data, and acquires an image of a diaphragm of the target lithium battery to obtain diaphragm image data; The image processing module generates a target image according to the positive plate image data, the negative plate image data and the diaphragm image data, wherein the target image is used to indicate the position and shape of the positive plate, the negative plate and the diaphragm; The image detection module judges whether the distance between the positive plate edge and the diaphragm edge in the target image in at least one preset direction exceeds a preset standard distance value, and judges whether the distance between the negative plate edge and the diaphragm edge in the target image in at least one preset direction exceeds a preset standard distance value; If the distance between the positive plate edge and the diaphragm edge in the at least one direction does not exceed the standard distance value, and the distance between the negative plate edge and the diaphragm edge in the at least one direction does not exceed the standard distance value, the image detection module marks the state of the target lithium battery as normal.

2. The method of claim 1, wherein, After the image detection module judges whether the distance between the positive plate edge and the diaphragm edge in the target image in at least one preset direction exceeds a preset standard distance value, and judges whether the distance between the negative plate edge and the diaphragm edge in the target image in at least one preset direction exceeds a preset standard distance value, the method further comprises the following steps: If there is a direction in which the distance between the positive plate edge and the diaphragm edge exceeds the standard distance value, or there is a direction in which the distance between the negative plate edge and the diaphragm edge exceeds the standard distance value, the image detection module marks the state of the target lithium battery as abnormal.

3. The method of claim 1, wherein, The lithium battery detection system further comprises a battery processing module, and after the image detection module judges whether the distance between the positive plate edge and the diaphragm edge in the target image in at least one preset direction exceeds a preset standard distance value, and judges whether the distance between the negative plate edge and the diaphragm edge in the target image in at least one preset direction exceeds a preset standard distance value, the method further comprises the following steps: If there is a direction in which the distance between the positive plate edge and the diaphragm edge exceeds the standard distance value, the image detection module sends the position information of the positive plate to the battery processing module; The battery processing module removes the positive plate from the target lithium battery according to the position information of the positive plate; If there is a direction in which the distance between the negative plate edge and the diaphragm edge exceeds the standard distance value, the image detection module sends the position information of the negative plate to the battery processing module; The battery processing module removes the negative plate from the target lithium battery according to the position information of the negative plate.

4. The method of claim 1, wherein, The image processing module generates a target image according to the positive plate image data, the negative plate image data and the separator image data, and the method comprises: The image processing module generates plate image data according to pixel information in the positive plate image data and pixel information in the negative plate image data; The image processing module parses the plate image data to obtain first synchronization control information and first effective image data, and parses the separator image data to obtain second synchronization control information and second effective image data, wherein the first synchronization control information comprises row signals and field signals in the plate image data, the first effective image data is image content in the plate image data, the second synchronization control information comprises row signals and field signals in the separator image data, and the second effective image data is image content in the separator image data; The image processing module generates the target image according to the first synchronization control information, the first effective image data, the second synchronization control information and the second effective image data.

5. The method of claim 2, wherein, The system further comprises an image display module, and the method further comprises: The image display module displays the target image and the state of the target lithium battery in the display according to a display mode indicated by an image display instruction issued by a user in response to the image display instruction.

6. The method of claim 1, wherein, The system further comprises an image storage module, and the method further comprises: The image storage module stores the target image in a double data rate synchronous dynamic random access memory.

7. The method of claim 1, wherein, The image processing module and the image detection module are programmable array logic chips.

8. A lithium battery detection system characterized by, The lithium battery detection system comprises an image acquisition module, an image processing module and an image detection module; The image acquisition module is configured to acquire positive plate image data of a positive plate of a target lithium battery, acquire negative plate image data of a negative plate of the target lithium battery, and acquire separator image data of a separator of the target lithium battery; The image processing module is configured to generate a target image according to the positive plate image data, the negative plate image data and the separator image data, wherein the target image is used to indicate positions and shapes of the positive plate, the negative plate and the separator; The image detection module is configured to determine whether distances between positive plate edges and separator edges in the target image in at least one preset direction do not exceed a preset standard distance value, and determine whether distances between negative plate edges and separator edges in the target image in at least one preset direction do not exceed a preset standard distance value. If the distance between the positive plate edge and the separator edge in the at least one direction does not exceed the standard distance value, and the distance between the negative plate edge and the separator edge in the at least one direction does not exceed the standard distance value, the image detection module is then used to mark the state of the target lithium battery as normal.

9. A computer device, comprising: The computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the lithium battery detection method according to any one of claims 1 to 7. The computer readable storage medium stores a computer program, and the computer program is executed by the processor to perform the steps of the lithium battery detection method according to any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, ​

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