Battery cell washing control method and washing system

Abstract

The application discloses a kind of cleaning control method and cleaning system of battery cell, applied to battery field, in the method, after the first cleaning parameter is used to control cleaning equipment and clean the windowing area of battery cell, the form of the protective film in the windowing area outside in the windowing area image can be obtained based on the windowing area image of battery cell.Furthermore, based on the form of the protective film, the offset of the cleaning area relative to the protective film in the windowing area image is obtained, and in the case where the offset is outside the first numerical range, the first cleaning parameter of the cleaning equipment is automatically compensated based on the offset, thereby realizing automatic correction.Compared with the related art, the method provided by the embodiments of the present application is not affected by human subjective factors, improves the accuracy of the compensation judgment of the first cleaning parameter, improves the accuracy of the compensation of the first cleaning parameter of the cleaning equipment, improves the accuracy of the correction, and further improves the reliability of the battery cell cleaning control.

Description

Technical Field

[0001] This application relates to the field of batteries, specifically to a method and system for cleaning and controlling battery cells. Background Technology

[0002] Batteries are a crucial power component for new energy vehicles. During battery production, the windowed area on top of the cell needs to be cleaned, followed by the application of adhesive. After cleaning, the deviation of the cleaned area from a reference position is typically checked manually, and the parameters of the cleaning equipment are manually adjusted to ensure the equipment can re-clean the area. This manual operation results in lower accuracy in error correction. Summary of the Invention

[0003] This application provides a cleaning control method and cleaning system for battery cells, which can solve the problem of low accuracy in correction in related technologies. The technical solution is as follows:

[0004] On the one hand, a method for cleaning and controlling battery cells is provided, the method including:

[0005] The cleaning equipment is controlled to clean the windowed area of ​​the battery cell using the first cleaning parameters;

[0006] Based on the image of the windowed area of ​​the battery cell, the morphology of the protective film surrounding the windowed area in the image is obtained; wherein, the morphology includes a closed morphology or a non-closed morphology.

[0007] Based on the shape of the protective film, the offset of the cleaning area relative to the protective film in the windowed area image is obtained;

[0008] If the offset is outside the first numerical range, the first cleaning parameters of the cleaning equipment are compensated based on the offset. The first cleaning parameters include the deflection angle of the galvanometer in the cleaning equipment.

[0009] Optionally, the morphology includes a closed morphology; based on the morphology of the protective film, the offset of the cleaned area in the windowed area image relative to the protective film is obtained, including:

[0010] Obtain the cleaning area and protective film from the windowed area image;

[0011] Obtain the first position of the center point of the cleaning area;

[0012] Obtain the second position of the center point of the protective film;

[0013] The offsets of the first and second positions are used as the offsets of the cleaning area relative to the protective film in the windowed area image.

[0014] Optionally, the morphology includes non-closed morphologies; based on the morphology of the protective film, the offset of the cleaning area in the windowed area image relative to the protective film is obtained, including:

[0015] Obtain the first offset between the first reference edge of the protective film and the first target edge of the cleaning area;

[0016] Obtain the second offset between the second reference edge of the protective film and the second target edge of the cleaning area;

[0017] The first offset and the second offset are used as the offset of the cleaning area relative to the protective film in the windowed area image.

[0018] The first reference edge intersects with the second reference edge, and the first target edge intersects with the second target edge.

[0019] Based on the shape of the protective film, the offset is determined using a method corresponding to that shape, which improves the flexibility of offset determination.

[0020] Optionally, the protective film includes an inner boundary and an outer boundary, with the inner boundary closer to the cleaning area than the outer boundary, and both the first reference edge and the second reference edge belong to the inner boundary. Since the inner boundary of the protective film is the boundary line intersecting with the windowed area, the contrast of this boundary line is obvious and the lines are clear. Therefore, using the inner boundary to calculate the offset can ensure the accuracy of the determined offset.

[0021] Optionally, the cleaning equipment is controlled to clean the windowed area of ​​the battery cell using a first cleaning parameter, including:

[0022] When the battery cell meets the cleaning requirements, the cleaning equipment is controlled to clean the windowed area of ​​the battery cell using the first cleaning parameters;

[0023] An alarm message will be issued if the battery cells do not meet the cleaning requirements.

[0024] Before the cleaning equipment is used to clean the windowed area of ​​the battery cell using the first cleaning parameters, the method further includes:

[0025] Optionally, if the battery cell meets preset conditions, determine that the battery cell meets the cleaning requirements;

[0026] If the battery cell does not meet the preset conditions, it is determined that the battery cell does not meet the cleaning requirements;

[0027] The preset conditions include at least one of the following:

[0028] The dimensions of the window opening area are within the preset size range;

[0029] The protective film has at least two sides, and if the protective film has two sides, the two sides intersect.

[0030] The offset of the weld seam of the electrode post in each cell relative to the outline of the electrode post is within the second numerical range.

[0031] Since the cleaning area to be formed in the window area has certain size requirements, if the size of the window area is outside the preset size range, the controller can determine that the size of the window area does not meet the preset requirements. For example, if the size of the window area is too small, it is impossible to form a cleaning area of ​​the required size in the window area. Therefore, it can be determined that the window area does not meet the cleaning requirements, and the battery cell can be automatically removed from the current station.

[0032] When the protective film has only one edge, or has two edges and the two edges are arranged opposite each other (e.g., the two edges are parallel), the offset of the cleaning area relative to the protective film cannot be determined using the protective film. Therefore, the controller can determine that the window area does not meet the cleaning requirements.

[0033] Before cleaning the windowed areas of the battery cells, the controller can also control the first welding equipment to weld the terminals of each cell to form welds on the terminals. However, if the offset of the weld of at least one terminal relative to the contour of that terminal is outside a second numerical range, the battery module cannot be used. Therefore, it is unnecessary to clean the windowed areas of each cell in the battery module.

[0034] Optionally, there are multiple battery cells; before obtaining the morphology of the protective film surrounding the windowed area in the windowed area image based on the windowed area image of the battery cell, the method further includes:

[0035] Images of the windowed areas in each battery cell are acquired sequentially according to a preset order.

[0036] Optionally, if the offset is within the first numerical range, the method further includes:

[0037] Obtain the second cleaning parameters;

[0038] The cleaning equipment is controlled to use the second cleaning parameters to clean the windowed area of ​​the battery cell;

[0039] Optionally, the first cleaning power in the first cleaning parameter is less than a power threshold; obtaining the second cleaning parameter includes:

[0040] The first cleaning power in the compensated first cleaning parameters is updated to the second cleaning power, while keeping all parameters in the compensated first cleaning parameters except for the second cleaning power unchanged, to obtain the second cleaning parameters.

[0041] If the offset is within the first numerical range, a higher power is used to clean the windowed area again. This ensures both accurate positioning of the cleaning area and effective cleaning, preventing quality issues caused by positional shifts in the cleaning area (such as cleaning onto the protective film) when using higher power to clean the windowed area.

[0042] On the other hand, a computer-readable storage medium is provided that stores a computer program thereon, which, when executed by a processor, implements the cell cleaning control method described above.

[0043] In another aspect, a controller is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the cell cleaning control method described above.

[0044] Furthermore, a cell cleaning device is provided, the cleaning device comprising:

[0045] The control module is used to control the cleaning equipment to clean the windowed area of ​​the battery cell using the first cleaning parameters;

[0046] The first acquisition module is used to acquire the shape of the protective film surrounding the windowed area in the image of the windowed area based on the image of the windowed area of ​​the battery cell; wherein the shape includes a closed shape or a non-closed shape.

[0047] The second acquisition module is used to acquire the offset of the cleaning area relative to the protective film in the windowed area image based on the shape of the protective film.

[0048] The compensation module is used to compensate for the first cleaning parameters of the cleaning equipment based on the offset when the offset is outside the first numerical range. The first cleaning parameters include the deflection angle of the galvanometer in the cleaning equipment.

[0049] In summary, this application provides a cell cleaning control method and system. In this method, after the controller controls the cleaning equipment to clean the windowed area of ​​the cell using first cleaning parameters, it can obtain the shape of the protective film surrounding the windowed area in the image of the windowed area. Then, based on the shape of the protective film, it obtains the offset of the cleaning area relative to the protective film in the image of the windowed area. If the offset is outside a first numerical range, it automatically compensates for the first cleaning parameters of the cleaning equipment based on the offset, thereby achieving automatic correction. Compared to related technologies, the method provided in this application is not affected by subjective human factors, improving the accuracy of determining whether to compensate for the first cleaning parameters, improving the accuracy of compensation for the first cleaning parameters of the cleaning equipment, improving the accuracy of correction, and thus improving the reliability of cell cleaning control.

[0050] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0051] Figure 1 This is a flowchart of a battery cell cleaning control method provided in an embodiment of this application;

[0052] Figure 2 This is a flowchart of another cell cleaning control method provided in an embodiment of this application;

[0053] Figure 3 This is a schematic diagram of multiple battery cells provided in an embodiment of this application;

[0054] Figure 4 This is a schematic diagram of a windowed area image provided in an embodiment of this application;

[0055] Figure 5 This is a schematic diagram of another windowed area image provided in an embodiment of this application;

[0056] Figure 6 This is a schematic diagram of the structure of a controller provided in an embodiment of this application;

[0057] Figure 7 This is a block diagram of a controller provided in an embodiment of the present invention. Detailed Implementation

[0058] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0059] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0060] In the description of the embodiments of this application, technical terms such as "first" and "second" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0061] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0062] In the description of the embodiments in this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0063] In the description of the embodiments of this application, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0064] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0065] In the description of the embodiments of this application, unless otherwise expressly specified and limited, technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0066] Batteries are a crucial power component for new energy vehicles. During battery production, the windowed area on the shoulder of the battery cell needs to be cleaned before applying adhesive. After cleaning, the deviation of the cleaned area from a reference position is typically checked manually, and the parameters of the cleaning equipment are adjusted manually to allow the equipment to re-clean the area. However, manual operation results in lower accuracy in correction.

[0067] This application provides a method for cleaning control of battery cells. In this method, after the controller controls the cleaning equipment to clean the windowed area of ​​the battery cell using first cleaning parameters, it can obtain the shape of the protective film surrounding the windowed area in the image of the windowed area. Then, based on the shape of the protective film, it obtains the offset of the cleaning area relative to the protective film in the image of the windowed area. If the offset is outside a first numerical range, it automatically compensates for the first cleaning parameters of the cleaning equipment based on the offset, thereby achieving automatic correction. Compared with related technologies, the method provided in this application is not affected by subjective human factors, improving the accuracy of determining whether to compensate for the first cleaning parameters, improving the accuracy of compensation for the first cleaning parameters of the cleaning equipment, improving the accuracy of correction, and thus improving the reliability of battery cell cleaning control.

[0068] Figure 1 This is a flowchart illustrating a cell cleaning control method provided in an embodiment of this application. This method can be applied to the controller in a cell cleaning system. Figure 1 As shown, the method includes:

[0069] Step 101: Control the cleaning equipment to clean the windowed area of ​​the battery cell using the first cleaning parameters.

[0070] The controller can control the cleaning equipment to clean the open area of ​​the battery cell using a first cleaning parameter. The first cleaning parameter may include a first cleaning power, and the cleaning equipment may be a laser cleaning device.

[0071] Step 102: Based on the image of the windowed area of ​​the battery cell, obtain the morphology of the protective film surrounding the windowed area in the image of the windowed area.

[0072] After the cleaning equipment cleans the windowed area of ​​the battery cell using the first cleaning parameters, the controller can acquire an image of the windowed area of ​​the battery cell, and then, based on the image of the windowed area of ​​the battery cell, acquire the morphology of the protective film surrounding the windowed area in the image of the windowed area.

[0073] The form can include a closed form or a non-closed form; that is, the protective film can be a closed area or a non-closed area. For example, the protective film can be insulating tape used to protect the aluminum shell of the battery cell.

[0074] Step 103: Based on the shape of the protective film, obtain the offset of the cleaning area relative to the protective film in the windowed area image.

[0075] After obtaining the shape of the protective film, the controller can use an image recognition algorithm to obtain the offset of the cleaning area in the windowed area image relative to the protective film.

[0076] Step 104: If the offset is outside the first numerical range, compensate the first cleaning parameter of the cleaning equipment based on the offset.

[0077] After acquiring the offset of the cleaning area relative to the protective film, the controller can detect that the offset is outside a first numerical range. If the offset is outside the first numerical range, the controller can determine that the center of the cleaning area is significantly deviated from the center of the window area. Therefore, the first cleaning parameters of the cleaning equipment can be compensated based on the offset, so that the cleaning equipment re-cleans the window area according to the compensated first cleaning parameters. This results in the re-formed cleaning area being centered within the window area, thus ensuring that the offset of the re-formed cleaning area relative to the protective film is within the first numerical range, thereby achieving automatic correction. The first cleaning parameters include the deflection angle of the galvanometer in the cleaning equipment.

[0078] Optionally, the controller can adjust the deflection angle of the galvanometer in the first cleaning parameter based on the offset, thereby compensating for the first cleaning parameter. By adjusting the deflection angle of the galvanometer, the direction of the laser beam emitted by the cleaning equipment is adjusted, compensating for deviations during the cleaning process. Simultaneously, dynamic adjustment of the laser beam direction is achieved, enabling precise compensation of the cleaning area, completely eliminating manual intervention, and reducing the product scrap rate to zero (e.g., product scrapping caused by the cleaning area exceeding the window opening area).

[0079] In summary, this application provides a cell cleaning control method. In this method, after the controller controls the cleaning equipment to clean the windowed area of ​​the cell using first cleaning parameters, it can obtain the shape of the protective film surrounding the windowed area in the image of the windowed area. Then, based on the shape of the protective film, it obtains the offset of the cleaning area relative to the protective film in the image of the windowed area. If the offset is outside a first numerical range, it automatically compensates for the first cleaning parameters of the cleaning equipment based on the offset, thereby achieving automatic correction. Compared to related technologies, the method provided in this application is not affected by subjective human factors, improving the accuracy of determining whether to compensate for the first cleaning parameters, and also improving the accuracy of compensating for the first cleaning parameters of the cleaning equipment, thus improving the accuracy of correction.

[0080] Figure 2 This is a flowchart of another cell cleaning control method provided in an embodiment of this application. This method can be applied to the controller in a cleaning system. Figure 2 As shown, the method includes:

[0081] Step 201: Control the cleaning equipment to clean the windowed area of ​​the battery cell using the first cleaning parameters.

[0082] After the controller moves the battery module to the cleaning station, it can respond to the correction command and control the cleaning equipment to clean the windowed area of ​​the battery cell using the first cleaning parameters.

[0083] The correction command can be triggered by the staff through a display device. The cleaning equipment can be a laser cleaning equipment. The first cleaning parameters can include parameters such as the first cleaning power, the deflection angle of the galvanometer, and the cleaning area parameters (such as the size of the laser scanning area and the cleaning trajectory). The first cleaning power is less than the power threshold, that is, the cleaning equipment uses low power for cleaning.

[0084] The "window area" refers to a partial opening on the top surface of the battery cell that is not fully encapsulated. In this window area, the outer (nylon) and inner (heat-sealing) layers of the aluminum-plastic film are removed, exposing the intermediate aluminum layer. This window area allows for electrical connections. Both the top and bottom surfaces of the battery cell are parallel to the bottom surface of the battery module's casing, with the top surface of the cell being further away from the bottom surface of the casing relative to its bottom surface.

[0085] refer to Figure 3 The windowed area 10 of the battery cell is located on the top surface of the battery cell 100, and an electrode post 20 is also disposed on the top surface. The length direction of the windowed area 10 is parallel to the width direction X of the battery cell. The width direction X of the battery cell refers to the width direction of the top surface of the battery cell, and the length direction Y of the battery cell refers to the length direction of the top surface of the battery cell. A protective film 30 is attached to the periphery of the windowed area 10. The protective film 30 can be insulating tape, and it is used to protect the aluminum shell of the battery cell 100. Furthermore, the contrast between the windowed area 10 and the protective film 30 is greater than a preset threshold. For example, the color of the windowed area 10 is silver, and the color of the protective film 30 can be dark blue.

[0086] A battery module can contain multiple cells, and these multiple cells are arranged in an array, as shown in the reference. Figure 3 The plurality of battery cells 100 can be six, and the six battery cells 100 are arranged in a 3×2 array. The controller can control the cleaning equipment to use the first cleaning parameters and clean the window areas of the plurality of battery cells 100 sequentially according to the first preset order.

[0087] Step 202: Based on the image of the windowed area of ​​the battery cell, obtain the morphology of the protective film surrounding the windowed area in the image of the windowed area.

[0088] After the cleaning equipment cleans the windowed area of ​​the battery cell using the first cleaning parameters, the controller can respond to an image acquisition command to acquire an image of the windowed area of ​​the battery cell. Based on this image, the controller can then determine the morphology of the protective film surrounding the windowed area. This image acquisition command can be manually triggered by the operator on the display device. (Refer to...) Figure 4 and Figure 5 The windowed area image may include the windowed area 10, the protective film 30, and the cleaning area 40.

[0089] Optionally, a first image acquisition device equipped with a ring light source can be installed on the servo axis of the robot platform in the cleaning system. This first image acquisition device can be a gantry equipped with a line scan camera. The line scan camera can capture high-resolution images and, by capturing the relative spatial coordinates of the object under test in real time, can quickly obtain accurate geometric data. The controller controls the first image acquisition device to photograph the windowed area and the protective film to obtain images of the windowed area.

[0090] In this embodiment of the application, the controller can control the movement of the servo axis to drive the first image acquisition device to acquire windowed area images of multiple battery cells in a second preset order.

[0091] For each cell's windowed area image, the controller can obtain the protective film in the windowed area image, and thus obtain the shape of the protective film.

[0092] The protective film can be either closed or open; that is, it can be a closed area or an open area. (Reference) Figure 3 and Figure 4 The protective film 30 is in a non-sealed form. (Reference) Figure 5 The protective film 30 has a closed shape. The controller can identify the protective film and its shape based on an image recognition algorithm.

[0093] In this embodiment, for each battery cell, if the cell meets the cleaning requirements, the controller can clean the open area within the cell. If the cell does not meet the cleaning requirements, the controller can issue a first alarm message, which indicates that the cell does not meet the cleaning requirements. Therefore, the controller can remove the battery module to which the cell belongs from the current workstation.

[0094] Optionally, if the battery cell meets preset conditions, the controller can determine that the battery cell meets the cleaning requirements. If the battery cell does not meet the preset conditions, the controller can determine that the battery cell does not meet the cleaning requirements. The preset conditions may include at least one of the following:

[0095] The dimensions of the window opening area are within the preset size range;

[0096] The protective film has at least two sides, and in the case that the protective film has two sides, the two sides intersect; for example, the two sides are adjacent and intersect.

[0097] The reference offset of the weld seam of the electrode post in each cell relative to the outline of the electrode post is within the second numerical range.

[0098] Understandably, since the cleaning area to be formed in the windowed area has certain size requirements, if the size of the windowed area is outside the preset size range, the controller can determine that the size of the windowed area does not meet the preset requirements. For example, if the size of the windowed area is too small, it is impossible to form a cleaning area of ​​the required size in that area. Therefore, it can be determined that the windowed area does not meet the cleaning conditions, and the battery module can be automatically removed from the current station, meaning that subsequent steps will not be performed for that battery module. The fact that the size of the windowed area is outside the preset size range may be due to inconsistencies in the incoming product materials or misalignment of the protective film.

[0099] Optionally, the controller can obtain the offset between the first side and the second side in the window opening area. If the offset between the first side and the second side is outside a preset offset range, it can be determined that the size of the window opening area is outside a preset size range. The first side and the second side are set relative to each other.

[0100] When the protective film has only one edge, or has two edges and the two edges are arranged opposite each other (e.g., the two edges are parallel), the offset of the cleaning area relative to the protective film cannot be determined using the protective film. Therefore, the controller can determine that the window area does not meet the cleaning conditions.

[0101] In this embodiment, the protective film has an inner boundary and an outer boundary. The protective film having at least two sides can mean that the inner boundary of the protective film has at least two sides, or that the outer boundary of the protective film has at least two sides.

[0102] Before moving the battery module to the cleaning station, the controller can also control the first welding equipment to weld the terminals of each cell to form welds on the terminals. However, if the reference offset of the weld of the terminal relative to the contour of at least one cell is outside a second numerical range, the cell cannot be used, and consequently, the battery module cannot be used. Therefore, it is unnecessary to clean the windowed areas of each cell in the battery module.

[0103] Before cleaning the windowed area of ​​the battery cell, the controller can take a picture of the windowed area through the first image acquisition device to obtain a target image, and based on the target image, detect whether the size of the windowed area is within the preset size range, and whether the protective film has at least two sides, and if the protective film has two sides, whether the two sides intersect.

[0104] In this embodiment of the application, the controller can detect whether the battery cell meets the first sub-condition in the preset conditions. If the first sub-condition is detected, the controller can take a picture of the windowed area during the cleaning process of the battery cell to obtain the target image, and detect whether the battery cell meets the second sub-condition in the preset conditions.

[0105] The second sub-condition includes at least one of the following: the size of the window area is within a preset size range; the protective film has at least two sides, and if the protective film has two sides, the two sides intersect. The first sub-condition includes: the reference offset of the weld seam of the electrode post in each cell relative to the outline of the electrode post is within a second numerical range.

[0106] If the battery cell does not meet the first sub-condition, then there is no need to move the battery module to the cleaning station, and therefore no need to clean the open areas of each battery cell in the battery module.

[0107] Before cleaning the windowed areas of each battery cell, the controller first welds the terminals of each cell. Therefore, the controller first checks whether the cell meets the first sub-condition. If the cell does not meet the first sub-condition, the battery module to which the cell belongs can be removed from the current station, thus eliminating the need to execute the second sub-condition. This avoids the controller performing unnecessary operations.

[0108] Step 203: Based on the shape of the protective film, obtain the offset of the cleaning area relative to the protective film in the windowed area image.

[0109] After acquiring the shape of the protective film, the controller can use image recognition and geometric calculation algorithms to obtain the offset of the cleaning area relative to the protective film in the windowed area image. This process relies on advanced algorithms to ensure the accuracy of the calculation results.

[0110] In one optional implementation of this application embodiment, the protective film is in a closed shape. The controller can acquire the cleaning area and the protective film in the windowed area image, acquire a first position of the center point of the cleaning area, acquire a second position of the center point of the protective film, and use the offset between the first position and the second position as the offset of the cleaning area relative to the protective film in the windowed area image.

[0111] refer to Figure 3 and Figure 5 The offset may include: the center point O1 of the cleaning area 40 relative to the center point O2 of the protective film 30, the first actual offset D1 in the cell width direction X, and the second actual offset D2 in the cell length direction Y.

[0112] The controller can establish a two-dimensional target coordinate system xy with the target point in the windowed area image as the origin, and refer to... Figure 5 The target point of this target coordinate system xy can be the center point O2 of the protective film. The first axis x of this target coordinate system xy is parallel to the cell width direction X, and the second axis y is parallel to the cell length direction Y. The controller can use the difference between the coordinates on the first axis at the first position and the coordinates on the first axis at the second position as the first actual offset, and the difference between the coordinates on the second axis at the first position and the coordinates on the second axis at the second position as the second actual offset. This yields the offset.

[0113] The target coordinate system includes four quadrants: the first quadrant formed by the positive direction of the first axis x and the positive direction of the second axis y; the second quadrant formed by the negative direction of the first axis x and the positive direction of the second axis y; the third quadrant formed by the negative direction of the first axis x and the negative direction of the second axis y; and the fourth quadrant formed by the positive direction of the first axis x and the negative direction of the second axis y.

[0114] The center point O1 of the cleaning region 40 may be located in any of the four quadrants, and the signs of the first and second actual offsets will differ depending on where the center point O1 is located. (Reference) Figure 3 The center point O1 of the cleaning area 40 is located in the second quadrant, D1 is the value of the first actual offset, and D2 is the value of the second actual offset.

[0115] In another optional implementation of this application embodiment, the protective film is non-closed. The controller can acquire the cleaning area and the protective film in the windowed area image, acquire the first reference edge of the protective film and the first offset of the first target edge of the cleaning area, acquire the second reference edge of the protective film and the second offset of the second target edge of the cleaning area, and use the first offset and the second offset as the offset of the cleaning area relative to the protective film in the windowed area image.

[0116] Wherein, the first reference edge intersects with the second reference edge, and the first target edge intersects with the second target edge. In the embodiments of this application, the first reference edge and the second reference edge are adjacent and intersect, and the first target edge and the second target edge are adjacent and intersect.

[0117] In this embodiment, the controller captures the relative position of the cleaning area and the protective film using high-precision spatial coordinates, ensuring the accuracy and consistency of the acquired offset and avoiding human error, thereby providing a reliable data source for correction. Furthermore, based on the shape of the protective film, the offset is determined using a method corresponding to that shape, improving the flexibility of offset determination.

[0118] In this embodiment, the protective film may include an inner boundary and an outer boundary, with the inner boundary closer to the cleaning area than the outer boundary, and both the first reference edge and the second reference edge belonging to the inner boundary. (Reference) Figure 4 The protective film 30 has three edges, with the first reference edge 301 and the second reference edge 302 belonging to the inner boundary of the protective film 30. Since the inner boundary of the protective film is the boundary line intersecting with the window area, the contrast of this boundary line is obvious and the lines are clear. Therefore, using the inner boundary to calculate the offset can ensure the accuracy of the determined offset.

[0119] refer to Figure 4 d1 is the value of the first offset between the first reference edge 301 and the first target edge. d2 is the value of the second offset between the second reference edge 302 and the second target edge.

[0120] Step 204: Check whether the offset is within the first value range.

[0121] After acquiring the offset, the controller can check whether the offset is within a first numerical range. If the offset is outside the first numerical range, it can be determined that the cleaning area is not located in the center of the window opening area, and therefore step 205 can be executed. For example, from... Figure 4 and Figure 5 It can be seen that the cleaning area 40 is offset from the center of the window area 10. If the offset is within the first value range, it can be determined that the cleaning area is located at the center of the window area, so step 206 can be executed.

[0122] When the offset includes a first actual offset and a second actual offset, the first numerical range may include a first range and a second range. If the first actual offset is outside the first range, and / or the second actual offset is outside the second range, the controller may determine that the offset is outside the first numerical range. If the first actual offset is within the first range and the second actual offset is within the second range, the controller may determine that the offset is within the first numerical range.

[0123] In one implementation, the center point O1 of the cleaning area 40 coincides with the center point O2 of the protective film, meaning both the first and second actual offsets are 0. However, within the allowable error range, the center point O1 of the cleaning area 40 can deviate from the center point O2 of the protective film by a certain distance, and the center point O1 of the cleaning area 40 can be located in any quadrant of the target coordinate system xy. Therefore, it can be set that when the first actual offset is within a first range and the second actual offset is within a second range, the cleaning area 40 is located at the center of the windowed area 10.

[0124] In this context, the lower limits of both the first and second ranges can be negative, while the upper limits of both ranges can be positive. For example, refer to... Figure 5The area enclosed by the first and second ranges is region W. As long as the center point O1 of the cleaning region 40 is located within region W, the cleaning region 40 is located at the center of the window opening region 10. From Figure 5 It can be seen that the center point O1 of the cleaning area 40 is located outside the area W, that is, the offset is outside the first numerical range.

[0125] When the actual offset includes a first offset and a second offset, the difference range may include a third range and a fourth range. If the first offset is outside the third range and / or the second offset is outside the fourth range, the controller may determine that the offset is outside the first numerical range. If the first offset is within the third range and the second offset is within the fourth range, the controller may determine that the offset is within the first numerical range.

[0126] Step 205: Compensate the first cleaning parameters of the cleaning equipment based on the offset.

[0127] If the offset is outside the first numerical range, the controller can compensate the first cleaning parameters of the cleaning equipment based on the offset and execute step 201 again, thereby precisely adjusting the cleaning equipment. This ensures that the cleaning equipment cleans the windowed area of ​​the battery cell according to the compensated first cleaning parameters, so that the offset of the newly formed cleaning area relative to the protective film is within the first numerical range, thus achieving automatic correction. Afterwards, adhesive can be applied to the cleaning area, and a pressure strip can be installed at the adhesive application location.

[0128] Optionally, the controller can adjust the deflection angle of the galvanometer in the first cleaning parameters based on the offset, thereby compensating for the first cleaning parameters and obtaining the compensated first cleaning parameters. By adjusting the deflection angle of the galvanometer, the direction of the laser beam emitted by the cleaning equipment is adjusted, compensating for deviations during the cleaning process. Simultaneously, dynamic adjustment of the laser beam direction is achieved, enabling precise compensation of the cleaning area, completely eliminating manual intervention, and reducing the product scrap rate to zero (e.g., product scrapping caused by the cleaning area exceeding the window opening area).

[0129] Step 206: Control the cleaning equipment to clean the windowed area of ​​the battery cell using the second cleaning parameters.

[0130] If the offset is within the first numerical range, the controller can respond to the cleaning command, obtain the second cleaning parameters, and control the cleaning equipment to clean the open area of ​​the battery cell using the second cleaning parameters. This cleaning command can be triggered by a worker through a display device. The second cleaning power in the second cleaning parameters is greater than or equal to a power threshold, meaning the cleaning equipment uses high power for cleaning. Furthermore, all parameters in the second cleaning parameters except for the second cleaning power are the same as all parameters in the compensated first cleaning parameters except for the first cleaning power. In other words, the second cleaning parameters and the compensated first cleaning parameters differ only in the cleaning power.

[0131] In this embodiment, the controller can update the first cleaning power in the compensated first cleaning parameters to the second cleaning power, and keep the parameters in the compensated first cleaning parameters other than the second cleaning power unchanged, thus obtaining the second cleaning parameters.

[0132] By performing the above steps, the controller, after accurately determining the location of the cleaning area, controls the cleaning equipment to use a larger cleaning power to clean the open area of ​​the battery cell, thereby ensuring the cleaning effect.

[0133] If the offset is outside the first numerical range, the controller compensates for the first cleaning parameters of the cleaning equipment based on the offset and cleans the windowed area again. Then, steps 202 to 204 are executed again to confirm the correction effect, thus constructing a complete closed-loop process, ensuring the reliability of the correction results, and preventing false or missed corrections. The main purpose of this stage is to clean the windowed area with low power and confirm whether the cleaning area is in the exact center of the windowed area, ensuring that subsequent high-power cleaning can proceed smoothly. If the offset is within the first numerical range, the windowed area is cleaned again with higher power. This ensures the accurate positioning of the cleaning area while guaranteeing the cleaning effect, preventing quality problems caused by positional deviation of the cleaning area (such as cleaning onto the protective film) when cleaning the windowed area with higher power.

[0134] In related technologies, the manual correction process is time-consuming (e.g., at least eight hours), resulting in low efficiency and requiring a large number of personnel. Automation levels are low, relying mainly on human experience for correction, making the results susceptible to human fatigue. Manual correction is also prone to occasional cleaning misalignment issues, easily leading to defective products.

[0135] The method provided in this application embodiment reduces correction time (e.g., less than 1 hour), significantly improves work efficiency, and greatly reduces the required personnel. The high level of automation reduces reliance on human experience, minimizes human error, and makes correction results more stable and reliable. Furthermore, it reduces defects caused by cleaning misalignment to zero, significantly lowering the defect rate and greatly improving product quality and yield in the production process. The method provided in this application embodiment can adapt to different weld types, thus exhibiting strong adaptability.

[0136] If the offset is within the first value range, the correction effect can be manually confirmed. Upon receiving a manually triggered cleaning command, the controller can confirm that the correction effect is good. Therefore, in response to the cleaning command, it can control the cleaning equipment to clean the windowed area of ​​the battery cell using the second cleaning parameters. For example, it can manually confirm whether the cleaning area is located in the middle of the windowed area.

[0137] In this embodiment, the controller controls the first cleaning device to clean the windowed areas of each battery cell according to a first preset sequence, and then controls the first image acquisition device to take pictures of the windowed areas of each battery cell according to a second preset sequence. In this case, the first preset sequence and the second preset sequence can be different or the same.

[0138] The controller cleans the windowed areas of multiple cells by executing step 201 and sequentially acquires the windowed area image of each cell. For each cell, the controller can execute steps 202 to 206.

[0139] Alternatively, for each battery cell, the controller can execute steps 201 to 206 as described above. Afterward, the controller controls the cleaning equipment to clean the windowed area of ​​the battery cell using the second cleaning parameters. Then, the controller can align the cleaning equipment with the target battery cell and clean its windowed area. The target battery cell is cleaned after the other battery cells in the overall cleaning sequence. Afterward, the controller executes steps 202 to 206 again. In this case, the first preset sequence is the same as the second preset sequence.

[0140] In this embodiment, a battery module is obtained after multiple battery cells are installed into a housing. The controller then moves the battery module to an insulation test station and performs a low-voltage insulation test. If the low-voltage insulation test of the battery module fails, the controller can issue a second alarm message. This second alarm message indicates that the low-voltage insulation test of the battery module has failed.

[0141] If the low-voltage insulation test of the battery module passes, the controller can control the cleaning equipment to clean each terminal in the battery module to remove residual electrolyte from the terminal surface and ensure the subsequent welding effect of the terminal. Optionally, the cleaning equipment can use a special cleaning solution to clean the terminals of each cell.

[0142] After the controller controls the cleaning equipment to clean each terminal in the battery module, it can move the battery module to the pre-welding inspection station to check whether the battery module meets the welding requirements. If the battery module does not meet the welding requirements, the controller can issue a third alarm message. This third alarm message is used to indicate that the battery module does not meet the welding requirements, so the controller can remove the battery module from the station.

[0143] In this embodiment, if the terminals of multiple battery cells all meet the first condition, the controller can determine that the battery module meets the welding requirements. If the terminals of at least one battery cell do not meet the first condition, the controller can determine that the battery module does not meet the welding requirements. The first condition may include at least one of the following:

[0144] At least two target poles, the spacing between any two adjacent target poles in the cell width direction is within a first preset range, and the cells to which the at least two target poles belong are arranged along the cell width direction;

[0145] The distance between any two target terminals along the length of the cell is within a second preset range;

[0146] The height of each target pole is within the third preset range.

[0147] The target terminal post is perpendicular to the bottom surface of the battery module housing. This height can be the distance between the top of the target terminal post and the top surface of the battery cell. The top of the target terminal post is furthest from the bottom of the housing relative to the top surface of the battery cell.

[0148] This first condition can be used to detect the position of the electrode post and whether its height exceeds a preset range, thereby confirming whether the electrode post is qualified.

[0149] If, in at least two target terminals, the spacing between any two adjacent target terminals in the cell width direction is outside a first preset range, and / or, the spacing between any two target terminals in the cell length direction is outside a second preset range, the controller can determine that the position of the terminal in some cells of the battery module is deviated. If the terminal is welded, the weld will be located outside the terminal.

[0150] When the electrode height is too high (or too low), it will affect the defocusing of the galvanometer in the first welding equipment during the subsequent welding process. A high electrode height can lead to incomplete welds on that electrode. A low electrode height can result in deeper welds on that electrode, potentially causing cell leakage.

[0151] In this embodiment, the controller can control a second image acquisition device to take pictures of the top surface of each battery cell to obtain a first image. Based on the first image, the controller identifies the spacing between every two adjacent target terminals in the width direction of the battery cell, and the spacing between any two target terminals in the length direction of the battery cell.

[0152] Furthermore, the controller can control the third image acquisition device to take pictures of the height of each target pole along the height direction of the target pole, obtaining a second image, and then the height of the target pole can be identified based on the second image. For example, the second image acquisition device can be a 2D camera, and the third image acquisition device can be a 3D camera.

[0153] If the battery module meets the welding requirements, the controller can move the battery module to the first welding chamber. For each cell, the first welding equipment is controlled to weld on the cell's terminal block according to the first welding parameters to form a weld seam. Afterwards, the weld seam and terminal block are photographed to obtain a weld seam image. The controller can identify a reference offset of the weld seam relative to the terminal block's contour based on the weld seam image, and if this reference offset is within a second numerical range, it determines that the deviation of the weld seam relative to the terminal block's contour is small; for example, the center of the weld seam coincides with the center of the terminal block's contour.

[0154] When the reference offset is outside the second numerical range, it is determined that the deviation of the weld seam relative to the pole post's contour is large. Therefore, the first welding parameters can be compensated based on the reference offset. The controller then controls the welding equipment to re-weld the pole post according to the compensated first welding parameters. The pole post and weld seam are photographed to obtain the reference offset of the re-formed weld seam relative to the pole post's contour. The controller also checks if the reference offset of the re-formed weld seam relative to the pole post's contour is within the second numerical range to confirm the correction effect. This establishes a complete closed-loop process, ensuring the reliability of the correction results and preventing false or missed corrections. This ensures the accuracy of the weld seam position on the pole post and effectively prevents welding quality problems caused by weld seam trajectory deviation during high-power welding.

[0155] Optionally, the controller can adjust the deflection angle of the galvanometer in the first welding parameters based on the reference offset, thereby compensating for the first welding parameters and obtaining the compensated first welding parameters. By adjusting the deflection angle of the galvanometer, the direction of the laser beam emitted by the first welding equipment is adjusted, compensating for deviations during the welding process. Simultaneously, dynamic adjustment of the laser beam direction is achieved, enabling precise compensation of the electrode welding trajectory in the battery cell, completely eliminating manual intervention and reducing the product scrap rate to zero (e.g., product scrap due to weld seam exceeding the electrode contour).

[0156] When the reference offsets for each of the multiple terminals are all within the second numerical range, the controller can move the battery module to the component installation station and install cell contact system (CCS) components on each terminal of the battery module to which the cell belongs. Then, the battery module is moved to the second welding chamber, and the second welding equipment is controlled to weld the CCS components covering each terminal according to the second welding parameters, thereby forming welds on the CCS components.

[0157] When the reference offset of each terminal in multiple terminals is within the second numerical range, the controller can determine that the deviation of the weld seam of each terminal in the battery module from the terminal outline is small, so CCS components can be installed on each terminal.

[0158] In this design, the second welding power in the second welding parameter is greater than the first welding power in the first welding parameter, meaning that high-power welding is used. This CCS module is used to connect battery cells in series, ensuring that the overall welding parameters and quality meet standards, further improving the reliability and consistency of the manufactured products. The aluminum bars (aluminum connecting pieces) on the CCS module tightly cover the battery cell terminals, ensuring that the welding position on the CCS module is aligned with the geometric center of the terminals.

[0159] In some embodiments of this application, when the weld morphology on each CCS component conforms to a preset morphology, the controller can move the battery module to the cleaning station and control the cleaning equipment to clean the open areas of each cell in the battery module. If the weld morphology on at least one CCS component does not conform to the preset morphology, the controller can determine that there is a problem with the welding quality of the CCS module and therefore can issue a fourth alarm message. This fourth alarm message indicates that the battery module does not meet the requirements and needs to be removed from the station.

[0160] The preset form may include at least one of the following:

[0161] The width of the weld on the CCS component is within the fourth preset range;

[0162] The depth of the weld on the CCS component is within the fifth preset range;

[0163] The CCS components were not damaged.

[0164] The weld seam on the CCS module can be either circular or quadrilateral. When the weld seam on the CCS module is circular, the width of the weld seam refers to the circumference of the weld. The depth of the weld seam is perpendicular to the bottom surface of the housing.

[0165] The controller can control the fourth image acquisition device to take pictures of the CCS component, obtain a surface image of the CCS component, and then identify the shape of the CCS component based on the surface image.

[0166] In summary, this application provides a cell cleaning control method. In this method, after the controller controls the cleaning equipment to clean the windowed area of ​​the cell using first cleaning parameters, it can obtain the shape of the protective film surrounding the windowed area in the image of the windowed area. Then, based on the shape of the protective film, it obtains the offset of the cleaning area relative to the protective film in the image of the windowed area. If the offset is outside a first numerical range, it automatically compensates for the first cleaning parameters of the cleaning equipment based on the offset, thereby achieving automatic correction. Compared to related technologies, the method provided by this application is not affected by subjective human factors, improving the accuracy of determining whether to compensate for the first cleaning parameters, improving the accuracy of compensation for the first cleaning parameters of the cleaning equipment, improving the accuracy of correction, and thus improving the reliability of cell cleaning control.

[0167] This application provides a computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the cell cleaning control method described in the above embodiments.

[0168] Figure 6 This is a schematic diagram of the structure of a controller provided in an embodiment of this application, such as... Figure 6 As shown, the controller 50 may include a processor 501, a memory 502, and a computer program stored in the memory 502 and executable on the processor 501. When the processor 501 executes the computer program, it implements the cell cleaning control method described in the above embodiments.

[0169] Figure 7 This is a block diagram of a controller provided in an embodiment of this application, such as... Figure 7 As shown, the controller includes:

[0170] The control module 601 is used to control the cleaning equipment to clean the windowed area of ​​the battery cell using the first cleaning parameters;

[0171] The first acquisition module 602 is used to acquire the shape of the protective film surrounding the windowed area in the image of the windowed area based on the image of the windowed area of ​​the battery cell; wherein the shape includes a closed shape or a non-closed shape.

[0172] The second acquisition module 603 is used to acquire the offset of the cleaning area relative to the protective film in the windowed area image based on the shape of the protective film.

[0173] The compensation module 604 is used to compensate the first cleaning parameter of the cleaning equipment based on the offset when the offset is outside the first numerical range.

[0174] Optionally, the form includes a closed form; the first acquisition module 602 is used for:

[0175] Obtain the cleaning area and protective film from the windowed area image;

[0176] Obtain the first position of the center point of the cleaning area;

[0177] Obtain the second position of the center point of the protective film;

[0178] The offsets of the first and second positions are used as the offsets of the cleaning area relative to the protective film in the windowed area image.

[0179] Optionally, the form includes a non-closed form; the first acquisition module 602 is used for:

[0180] Obtain the cleaning area and protective film from the windowed area image;

[0181] Obtain the first offset between the first reference edge of the protective film and the first target edge of the cleaning area;

[0182] Obtain the second offset between the second reference edge of the protective film and the second target edge of the cleaning area;

[0183] The first offset and the second offset are used as the offset of the cleaning area relative to the protective film in the windowed area image.

[0184] The first reference edge intersects with the second reference edge, and the first target edge intersects with the second target edge.

[0185] Optionally, the protective film includes an inner boundary and an outer boundary, with the inner boundary being closer to the cleaning area than the outer boundary, and both the first reference edge and the second reference edge belonging to the inner boundary.

[0186] Optionally, control module 601 is used for:

[0187] When the battery cell meets the cleaning requirements, the cleaning equipment is controlled to clean the windowed area of ​​the battery cell using the first cleaning parameters;

[0188] An alarm message will be issued if the battery cells do not meet the cleaning requirements.

[0189] Optionally, control module 601 is used for:

[0190] Before the cleaning equipment is used to clean the windowed area of ​​the battery cell using the first cleaning parameters, the battery cell is determined to meet the cleaning requirements if the battery cell meets the preset conditions.

[0191] If the battery cell does not meet the preset conditions, it is determined that the battery cell does not meet the cleaning requirements;

[0192] The cleaning requirements include at least one of the following:

[0193] The dimensions of the window opening area are within the preset size range;

[0194] The protective film has at least two sides, and if the protective film has two sides, the two sides intersect.

[0195] The offset of the weld seam of the electrode post in each cell relative to the outline of the electrode post is within the second numerical range.

[0196] Optionally, there may be multiple battery cells; the first acquisition module 602 is used for:

[0197] Before acquiring the morphology of the protective film surrounding the windowed area in the windowed area image based on the windowed area image of the battery cell, the windowed area images of the windowed area in each battery cell are acquired sequentially according to a preset order.

[0198] Optionally, the first cleaning power in the first cleaning parameter is less than a power threshold; the control module 601 is also used for:

[0199] Obtain the second cleaning parameters;

[0200] When the offset is within the first value range, the cleaning equipment is controlled to use the second cleaning parameters to clean the windowed area of ​​the battery cell.

[0201] Optionally, the control module 601 is also used for:

[0202] The first cleaning power in the compensated first cleaning parameters is updated to the second cleaning power, while keeping all parameters in the compensated first cleaning parameters except for the second cleaning power unchanged, to obtain the second cleaning parameters.

[0203] In summary, this application provides a battery cell cleaning device. After the device cleans the windowed area of ​​the battery cell using a first cleaning parameter, it can obtain the shape of the protective film surrounding the windowed area in the image of the windowed area. Then, based on the shape of the protective film, it obtains the offset of the cleaned area relative to the protective film in the image of the windowed area. If the offset is outside a first numerical range, it automatically compensates for the first cleaning parameter of the cleaning device based on the offset, thereby achieving automatic correction. Compared with related technologies, the device provided in this application is not affected by subjective human factors, improving the accuracy of determining whether to compensate for the first cleaning parameter, improving the accuracy of the compensation for the first cleaning parameter of the cleaning device, improving the accuracy of correction, and thus improving the reliability of battery cell cleaning control.

[0204] This application provides a battery cell cleaning system, which may include cleaning equipment and the controller described in the above embodiments.

[0205] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A method for cleaning and controlling battery cells, characterized in that, The method includes: The cleaning equipment is controlled to clean the windowed area of ​​the battery cell using the first cleaning parameters; Based on the image of the windowed area of ​​the battery cell, the shape of the protective film surrounding the windowed area in the image is obtained; wherein, the shape includes a closed shape or a non-closed shape; Based on the shape of the protective film, the offset of the cleaning area in the windowed area image relative to the protective film is obtained; If the offset is outside the first numerical range, the first cleaning parameter of the cleaning device is compensated based on the offset, the first cleaning parameter including the deflection angle of the galvanometer in the cleaning device.

2. The method according to claim 1, characterized in that, The shape includes the closed shape; Based on the shape of the protective film, the offset of the cleaning area in the windowed area image relative to the protective film is obtained, including: Obtain the cleaning area and protective film from the image of the windowed area; Obtain the first position of the center point of the cleaning area; Obtain the second position of the center point of the protective film; The offsets of the first and second positions are used as the offsets of the cleaning area in the windowed area image relative to the protective film.

3. The method according to claim 1, characterized in that, The shape includes the non-closed shape; Based on the shape of the protective film, the offset of the cleaning area in the windowed area image relative to the protective film is obtained, including: Obtain the cleaning area and protective film from the image of the windowed area; Obtain the first reference edge of the protective film and its first offset relative to the first target edge of the cleaning area; Obtain the second offset between the second reference edge of the protective film and the second target edge of the cleaning area; The first offset and the second offset are used as the offset of the cleaning area relative to the protective film in the windowed area image; Wherein, the first reference edge intersects with the second reference edge, and the first target edge intersects with the second target edge.

4. The method according to claim 3, characterized in that, The protective film includes an inner boundary and an outer boundary. The inner boundary is closer to the cleaning area than the outer boundary, and both the first reference edge and the second reference edge belong to the inner boundary.

5. The method according to any one of claims 1 to 4, characterized in that, The controlled cleaning equipment uses a first cleaning parameter to clean the windowed area of ​​the battery cell, including: When the battery cell meets the cleaning requirements, the cleaning equipment is controlled to clean the windowed area of ​​the battery cell using the first cleaning parameters. An alarm message will be issued if the battery cell does not meet the cleaning requirements.

6. The method according to claim 5, characterized in that, Before the cleaning equipment is used to clean the windowed area of ​​the battery cell using the first cleaning parameters, the method further includes: If the battery cell meets the preset conditions, it is determined that the battery cell meets the cleaning requirements; If the battery cell does not meet the preset conditions, it is determined that the battery cell does not meet the cleaning requirements. The preset conditions include at least one of the following: The dimensions of the window area are within a preset size range; The protective film has at least two sides, and when the protective film has two sides, the two sides intersect. The offset of the weld seam of the electrode post in each of the battery cells relative to the outline of the electrode post is within the second numerical range.

7. The method according to any one of claims 1 to 4, characterized in that, The battery cells are multiple; before obtaining the morphology of the protective film surrounding the windowed area in the windowed area image based on the windowed area image of the battery cells, the method further includes: Images of the windowed areas in each of the battery cells are acquired sequentially according to a preset order.

8. The method according to any one of claims 1 to 4, characterized in that, If the offset is within the first numerical range, the method further includes: Obtain the second cleaning parameters; The cleaning equipment is controlled to clean the windowed area of ​​the battery cell using the second cleaning parameters.

9. The method according to claim 8, characterized in that, The first cleaning power in the first cleaning parameter is less than a power threshold; obtaining the second cleaning parameter includes: The first cleaning power in the compensated first cleaning parameters is updated to the second cleaning power, while keeping all parameters in the compensated first cleaning parameters except for the second cleaning power unchanged, to obtain the second cleaning parameters.

10. A computer-readable storage medium, characterized in that, It stores a computer program, which, when executed by a processor, implements the cell cleaning control method according to any one of claims 1-9.

11. A controller, characterized in that, The method includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the computer program, it implements the cell cleaning control method according to any one of claims 1-9.

12. A battery cell cleaning system, characterized in that, The cleaning system includes: cleaning equipment, and a controller as described in claim 11.

Images