Battery surface printing method, device, equipment and storage medium

Abstract

The application discloses a battery surface printing method and device, equipment and storage medium, and relates to the field of inkjet printing technology.The method comprises the following steps: obtaining the shape of a battery to be printed; determining a preset printing area on the surface of the battery according to the shape of the battery; after controlling a nozzle to spray UV ink to the preset printing area, controlling a UV curing device to cure the UV ink in the preset printing area.The method is beneficial to the inkjet technology to efficiently and accurately spray the insulating UV ink to the preset printing area on the surface of the battery through the nozzle, the cured UV ink can be closely attached to the surface of the battery, and no defects such as wrinkles or bubbles are generated, so that a firm and beautiful insulating layer can be formed on the surface of the battery.Compared with the existing blue film coating process, the insulating film layer formed by the inkjet technology is more uniform, safer and more environmentally friendly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of inkjet printing technology, and in particular to a battery surface printing method, device, equipment and storage medium. BACKGROUND

[0002] The existing new energy battery core is often protected by an aluminum shell (battery shell), and a layer of blue film (hereinafter referred to as blue film) is usually coated on the outer surface of the aluminum shell. The blue film can play an insulating and buffering effect, and can be used to block the influence of a single battery core on other battery cores due to various faults, preventing "all losses". However, the blue film coated on the surface of the battery aluminum shell is prone to scratches, damage, wrinkles and other defects during the coating process. Moreover, the process cost of setting the blue film on the surface of the battery is relatively high and has poor applicability. In addition, the blue film coated on the surface of the battery is prone to air bubbles and other problems. These defects or problems may affect the appearance of the product, or even cause damage to the product function of the entire battery.

[0003] Inkjet printing technology refers to a technology that sprays ink droplets through nozzles on a print head onto a print medium to obtain an image or text. The print medium is generally two-dimensional and planar. However, with the development of technology and the expansion of demand, inkjet printing technology has been gradually applied to the printing of three-dimensional print media, such as cylindrical object surface printing and battery surface printing. How to use inkjet printing technology to spray ink on the surface of a battery and form an insulating medium with the same effect as the above-mentioned blue film is a problem that needs to be solved in new energy battery manufacturing. SUMMARY

[0004] Therefore, the embodiments of the present application provide a battery surface printing method, device, equipment and storage medium to solve the problem of defects in the coating of an insulating layer on the surface of a battery in the prior art.

[0005] In a first aspect, the embodiments of the present application provide a battery surface printing method, which comprises:

[0006] obtaining the shape of a battery to be printed;

[0007] determining a preset printing area on the surface of the battery according to the shape of the battery;

[0008] controlling a print head to spray UV ink to the preset printing area and controlling a UV curing device to cure the UV ink in the preset printing area.

[0009] Preferably, the step of obtaining the shape of the battery to be printed comprises:

[0010] controlling an image acquisition device to acquire an image of the battery to be printed to obtain an acquired image;

[0011] performing image analysis on the collected image to obtain a shape of the battery.

[0012] Preferably, the controlling the printhead to spray the UV ink to the preset printing area and controlling the UV curing device to cure the UV ink in the preset printing area comprises:

[0013] controlling the printhead to spray a first ink amount of UV ink dots to a preset printing area on the surface of the battery;

[0014] controlling the UV curing device to cure the UV ink sprayed to the preset printing area;

[0015] controlling an image collection device to collect an image of the surface of the battery and determining a defect site according to the image of the surface of the battery, wherein the defect site comprises any one or more of a recessed edge site or a protruding center site;

[0016] determining a first correction printing area according to the defect site;

[0017] controlling the printhead to spray a second ink amount of UV ink dots to the first correction printing area;

[0018] controlling the UV curing device to cure the UV ink sprayed to the first correction printing area.

[0019] Preferably, the controlling the printhead to spray a second ink amount of UV ink dots to the first correction printing area further comprises:

[0020] obtaining a distance between a highest point of the defect site and the surface of the battery after the first ink amount of UV ink is sprayed;

[0021] determining the second ink amount according to the distance;

[0022] determining a size of the UV ink dots sprayed by the printhead according to the second ink amount.

[0023] Preferably, the controlling the printhead to spray the UV ink to the preset printing area and controlling the UV curing device to cure the UV ink in the preset printing area comprises:

[0024] controlling an image collection device to collect an image of the surface of the battery and determining a defect site according to the image of the surface of the battery, wherein the defect site comprises any one or more of a recessed edge site or a protruding center site;

[0025] determining a second correction printing area according to the defect site, wherein the second correction printing area is located in the preset printing area;

[0026] controlling the printhead to spray a third amount of UV ink dots to the preset printing area except the second correction area, and controlling the printhead to spray a fourth amount of UV ink dots to the second correction area when the printhead is at the second correction printing area, wherein the fourth amount is greater than the third amount;

[0027] controlling the UV curing device to cure the UV ink sprayed to the preset printing area.

[0028] Preferably, any two faces of the battery meet at an arc surface, and the controlling the printhead to spray UV ink to the preset printing area and the controlling the UV curing device to cure the UV ink in the preset printing area comprises:

[0029] obtaining an arc surface area in the battery, denoted as an arc surface printing area;

[0030] obtaining a planar area in the battery, denoted as a planar printing area;

[0031] controlling the printhead to spray a first ink to the arc surface printing area;

[0032] controlling the UV curing device to cure the first ink in the arc surface printing area at a first power;

[0033] controlling the printhead to spray a second ink to the planar printing area;

[0034] controlling the UV curing device to cure the second ink in the planar printing area at a second power;

[0035] wherein the first ink and the second ink are UV inks with different viscosities, and the viscosity of the first ink is greater than the viscosity of the second ink.

[0036] Preferably, after the controlling the printhead to spray UV ink to the preset printing area, the controlling the UV curing device to cure the UV ink in the preset printing area further comprises:

[0037] obtaining a mapping relationship between the viscosity of the UV ink and the curing power;

[0038] determining the first power according to the viscosity of the first ink and the second power according to the viscosity of the second ink according to the mapping relationship.

[0039] In a second aspect, an embodiment of the present application provides a battery surface printing device, which comprises:

[0040] a battery shape obtaining module, configured to obtain the shape of a battery to be printed;

[0041] A preset printing area determination module is configured to determine a preset printing area on the surface of the battery according to the shape of the battery.

[0042] A printing and curing module is configured to control the nozzle to spray UV ink to the preset printing area and control a UV curing device to cure the UV ink in the preset printing area.

[0043] In a third aspect, an embodiment of the present application provides a battery surface printing device, comprising at least one processor, at least one memory, and computer program instructions stored in the memory, which, when executed by the processor, implement the method of the first aspect in the above-described embodiments.

[0044] In a fourth aspect, an embodiment of the present application provides a storage medium having computer program instructions stored thereon, which, when executed by a processor, implement the method of the first aspect in the above-described embodiments.

[0045] To sum up, the beneficial effects of the present application are as follows:

[0046] The battery surface printing method, device, equipment and storage medium provided by the embodiments of the present application obtain the shape of a battery to be printed, determine a preset printing area on the surface of the battery according to the shape of the battery, control the nozzle to spray UV ink to the preset printing area, and control a UV curing device to cure the UV ink in the preset printing area. The method of the present application is beneficial for the inkjet technology to efficiently and accurately spray the insulating UV ink through the nozzle to the preset printing area of the set battery surface. The cured UV ink can be closely attached to the battery surface, and no defects such as wrinkles or bubbles are generated, so that a firm and beautiful insulating layer can be formed on the battery surface. Furthermore, the ink amount of the sprayed ink can be adjusted according to the specific conditions of the battery surface, such as whether there are defects such as recesses and convex points, and different viscosity UV inks are used in different regions such as arc-shaped regions or planar regions, so as to ensure the insulation of the ink film. Compared with the existing blue film coating process, the use of the inkjet technology to form the insulating film layer has better uniformity, higher safety, and is more environmentally friendly. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced. For those skilled in the art, other drawings can also be obtained without creative labor on the premise that these drawings are within the protection scope of the present application.

[0048] Figure 1a FIG. 1 is a structural schematic diagram of a battery inkjet printing system in the embodiments of the present application.

[0049] Figure 1bis a structural schematic diagram of a battery inkjet printing system in an embodiment of the present application.

[0050] Figure 2 is a flowchart of a battery surface printing method in an embodiment of the present application.

[0051] Figure 3 is a schematic diagram of a battery surface defect site in an embodiment of the present application.

[0052] Figure 4 is Figure 2 is a specific flowchart of step S3 in the embodiment.

[0053] Figure 5 is Figure 2 is a specific flowchart of step S3 in the embodiment.

[0054] Figure 6 is Figure 2 is a specific flowchart of step S3 in the embodiment.

[0055] Figure 7 is a structural schematic diagram of a battery surface printing device in an embodiment of the present application.

[0056] Figure 8 is a structural schematic diagram of a battery surface printing device in an embodiment of the present application. DETAILED DESCRIPTION

[0057] The features and exemplary embodiments of the various aspects of the present application will be described in detail below with reference to the drawings. To make the purpose, technical solutions and advantages of the present application more clear, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are configured only to explain the present application, and are not configured to limit the present application. The present application can be implemented without some of the specific details by those skilled in the art. The following description of the embodiments is merely provided to provide a better understanding of the present application by showing examples of the present application.

[0058] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element preceded by "comprises... " does not, without more constraints, preclude the existence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0059] Example 1

[0060] This invention provides a battery surface printing method, applicable to a battery inkjet printing system used for surface printing on new energy power batteries, etc. Figure 1a As shown, the battery inkjet printing system includes at least one printing module 10, which includes at least one printhead 11 and a curing device 12. One side of the battery 2 is positioned under the printing module 10. The printhead 11 in the printing module is controlled to spray ink onto the surface of the battery 2, and then the curing device 12 is controlled to cure the ink sprayed onto the battery surface. Since the battery 2 is often cuboid in shape, it has six sides, including front 21, front 22, side 23, side 24, side 26, and side 26. Figure 1a When printing on a battery (with the front side 21 located below the printing module 10 and the front side 22 opposite to it), after printing one side, the battery is flipped over so that the other unprinted side is placed below the printing module 10, and printing of the other side continues until all sides are printed. In another embodiment, as... Figure 1b As shown, the battery inkjet printing system includes printing module 10, printing module 20, and printing module 30. Printing module 10 prints the front sides 21 and 22 of the battery 2, printing module 20 prints the sides 23 and 24 of the battery, and printing module 30 prints the sides 25 and 26 of the battery. Multiple printing modules are used to print on multiple sides of the battery simultaneously to improve printing efficiency. Similarly, as... Figure 1b As shown, after printing the front 21, side 23 and side 25, the front 22, side 24 and side 26 of the battery are printed by moving the battery or moving the printing modules 10, 20 and 30, thereby completing the printing of the entire battery surface.

[0061] In this embodiment of the invention, inkjet printing technology is used to print UV ink onto the battery surface to form an insulating medium with a function similar to the aforementioned blue film. Using UV ink printing and a UV curing device allows the ink sprayed onto the battery surface to dry (cur) instantly. UV curing, or ultraviolet curing, utilizes irradiation with a 200nm-450nm wavelength light source in the ultraviolet range to trigger an instantaneous polymerization reaction between the ink and materials. The cured ink contains no solvent components and no volatile organic compounds (VOCs), making it environmentally friendly, efficient, and aesthetically pleasing. The cured UV ink adheres tightly to the battery surface without wrinkles or bubbles, thus forming a strong and aesthetically pleasing insulating layer on the battery surface.

[0062] Please see Figure 2, the battery surface printing method specifically comprises the following steps:

[0063] S1: obtaining the shape of the battery to be printed;

[0064] S2: determining a preset printing area on the surface of the battery according to the shape of the battery;

[0065] S3: controlling the nozzle to spray UV ink to the preset printing area and controlling the UV curing device to cure the UV ink in the preset printing area.

[0066] Specifically, the shape of the battery to be printed can be obtained by manual observation or measurement, and preferably, an image acquisition device can be provided in the battery inkjet printing system to realize automatic identification of the battery shape. An image acquisition device such as a CCD / CMOS camera or a 3D camera is provided in the battery inkjet printing system, and the battery shape is obtained by controlling the image acquisition device to capture the image of the battery and analyzing and processing the image. For example, the image of the six faces of the battery is captured by the CCD / CMOS camera, and then the shape and size of each face of the battery are obtained by processing and analyzing the captured images. In another embodiment, the stereo image of the battery is captured by a depth vision camera or a 3D camera, and the shape and size of each face of the battery are obtained by processing and analyzing the captured images. After obtaining the shape and size of each face, the battery shape information is sent to the printing control software of the battery inkjet printing system, and the printing control software determines the printing area parameters of each face according to the information, thereby determining the printing area of the entire battery surface, which is referred to as the preset printing area. The image acquisition device integrated in the battery inkjet printing system automatically captures the shape information of the battery to be printed and sends it to the printing control software to automatically determine the preset printing area, which helps to automate and intelligentize the battery inkjet printing system, improves production efficiency and provides a good experience for users.

[0067] After determining the preset printing area of the battery, the nozzle is further controlled to spray UV ink to the preset printing area, and then the UV curing device is controlled to cure the UV ink on the surface of the battery to form a layer of UV ink film on the surface of the battery. For example, when using the battery inkjet printing system as shown in Figure 1a , according to the preset printing area set, the nozzle 11 in the printing module 10 is controlled to spray UV ink onto the front face 21 of the battery, and the UV curing device 12 cures the sprayed UV ink. After the front face 21 is printed and cured, the battery is flipped or the printing module 10 is moved to print and cure the front face 22, and after the front face 22 is printed and cured, the battery is flipped or the printing module 10 is moved to print and cure the side face 23, and so on, thereby completing the inkjet printing and curing of each face of the battery one by one. When using the battery inkjet printing system as shown in Figure 1bAs shown in the battery inkjet printing system, the nozzles in the printing module 10, the printing module 20 and the printing module 30 respectively spray UV ink to the front surface 21, the side surface 23 and the side surface 25 of the battery, and the UV curing device cures the ink sprayed on the surface of the battery. After the front surface 21, the side surface 23 and the side surface 25 are printed and cured, the battery is moved or the printing module 10, 20 and 30 is moved to print and cure the front surface 22, the side surface 24 and the side surface 26 respectively, so as to complete the inkjet printing and curing of each surface of the battery.

[0068] In the manufacturing process of the battery, since the outermost aluminum shell is a metal product, it is difficult to completely smooth the surface of the battery, and there will be recesses, pits, concave points or protrusions and other defects. Generally, after the UV ink is sprayed on the surface of the battery, the UV ink will naturally flow flat under the action of surface tension. For example, Figure 3 As shown, due to the existence of the above defects, the UV ink that has flowed flat is easy to form a relatively weak film layer at the edge part 31 of the recess, the center part 32 of the protrusion and other positions compared with other positions, and these weak film layer positions bring a certain risk to the insulation of the whole battery.

[0069] In order to avoid this risk, please refer to Figure 4 In one embodiment, after the control of the nozzle to spray the UV ink to the preset printing area, the control of the UV curing device to cure the UV ink in the preset printing area includes:

[0070] S31: controlling the nozzle to spray a first ink amount of UV ink dots to a preset printing area on the surface of the battery;

[0071] S32: controlling the UV curing device to cure the UV ink sprayed to the preset printing area;

[0072] S33: controlling the image acquisition device to acquire a battery surface image and determining a defect position according to the battery surface image, wherein the defect position includes any one or more of the edge part of the recess, the center part of the protrusion;

[0073] S34: determining a first correction printing area according to the defect position;

[0074] S35: controlling the nozzle to spray a second ink amount of UV ink dots to the first correction printing area;

[0075] S36: controlling the UV curing device to cure the UV ink sprayed to the first correction printing area.

[0076] Specifically, first, the control head sprays a first amount of UV ink dots to a preset printing area on the surface of the battery and controls the UV curing device to cure the ink to form a first thickness of UV ink film. The first amount of ink here refers to the amount of ink per UV ink dot. The larger the ink dot, the more ink it contains. For example, existing inkjet printing equipment can often spray four types of ink dots: large ink dots, medium ink dots, small ink dots, and empty ink dots. Among them, the amount of ink in large ink dots is the largest, followed by medium ink dots, and the amount of ink in small ink dots is the smallest. Empty ink dots indicate no ink. The first amount of ink can be determined according to actual conditions and is not limited here. After covering the surface of the battery with a first thickness of UV ink film, the image acquisition device is controlled to acquire an image of the surface of the battery covered with a first thickness of UV ink film. The acquired image is processed and analyzed to identify defect sites such as recessed edge sites, raised center sites, and the like. The positions of these defect sites are used to determine their corresponding first correction printing areas. Then, the control head sprays a second amount of UV ink dots to the first correction printing areas corresponding to the defect sites, and then cures the UV ink in these printing areas. Thus, a layer of UV ink film is added to the defect sites, i.e., the weak film layer sites are thickened or layered, thereby strengthening the insulation of the defect sites.

[0077] It is worth noting that the second amount of ink can be determined according to the distance (difference) between the highest point or average height of the defect site and the surface of the battery after being covered with a first thickness of UV ink film. When the above difference is large, all large ink dots can be used for printing. When the difference is small, medium or small ink dots can be used for printing. When the difference is large and the thickness of the UV film formed by a single printing and curing is insufficient, multiple coverage printing can be performed to better improve the insulation of the defect sites.

[0078] Please refer to Figure 5 In another embodiment, after the control head sprays UV ink to the preset printing area, the control of the UV curing device to cure the UV ink in the preset printing area includes:

[0079] S301: Control the image acquisition device to acquire an image of the surface of the battery and determine defect sites based on the image of the surface of the battery. The defect sites include any one or more of recessed edge sites and raised center sites.

[0080] S302: Determine a second correction printing area based on the defect sites. The second correction printing area is located in the preset printing area.

[0081] S303: controlling the printhead to eject a third amount of UV ink dots to the preset printing area except the second correction printing area, and controlling the printhead to eject a fourth amount of UV ink dots to the second correction printing area when the printhead is printing in the second correction printing area, wherein the fourth amount is greater than the third amount;

[0082] S304: controlling the UV curing device to cure the UV ink ejected to the preset printing area.

[0083] Specifically, the image acquisition device can be used to acquire images of each surface of the battery and analyze and process the acquired images to identify the edge of the recessed part, the center of the protruding part and other defect parts. The position of the defect part is determined to correspond to the second correction printing area. Then, the printhead is controlled to eject a third amount of UV ink dots to the preset printing area of the battery surface except the second correction printing area. However, when printing to the second correction printing area corresponding to the defect part, the ink amount of the ink dots ejected by the printhead is changed, such as increasing the ink amount to a fourth amount. The UV curing device is controlled to cure the UV ink ejected to the surface of the battery. Preferably, the curing power of the UV curing device is dynamically adjusted according to the ink amount. However, when the ink amount of the ink dots is large, the curing power is increased to ensure the complete curing of the ink, so as to form a thicker UV ink film at the defect part to improve the insulation of the defect part. During the printing process on the surface of the battery, the ink amount is changed in real time according to the position of the defect. Therefore, the production efficiency is improved.

[0084] In order to improve the safety, strength and performance of the battery, the junctions of each surface of the aluminum shell of the cuboid-shaped new energy battery are designed as arc surfaces. The edges of the arc surfaces can reduce stress concentration, improve the strength of the battery shell, better dissipate heat, improve the heat management effect of the battery and reduce the risk of overheating. When printing the edge area of the arc surface, the ink is prone to slide down along the arc surface (known as difficult to hang ink in the industry) due to the certain curvature of the area, resulting in a weak ink layer in the edge area of the arc surface and reducing the insulation of the part.

[0085] In order to improve the insulation of the edge area, please refer to Figure 6 In one embodiment, after the control of the printhead to eject UV ink to the preset printing area, the control of the UV curing device to cure the UV ink in the preset printing area comprises:

[0086] S3001: Obtain the curved surface shape region in the battery, denoted as a curved surface printing region;

[0087] S3002: Obtain the planar shape region in the battery, denoted as a planar printing region;

[0088] S3003: Control the printhead to spray the first ink to the curved surface printing region;

[0089] S3004: Control the UV curing device to cure the first ink of the curved surface printing region according to a first power;

[0090] S3005: Control the printhead to spray the second ink to the planar printing region;

[0091] S3006: Control the UV curing device to cure the second ink of the planar printing region according to a second power;

[0092] The first ink and the second ink are UV inks with different viscosities, and the viscosity of the first ink is greater than the viscosity of the second ink.

[0093] Specifically, first, an image acquisition device can acquire an image of the surface of the battery, analyze and process the acquired image, and divide the preset printing region into a curved surface printing region and a planar printing region. The curved surface printing region corresponds to the edge region of the intersection of each face of the battery. When printing these curved surface printing regions, the printhead is controlled to spray the first ink of the UV ink for printing, and the UV curing device is controlled to cure the UV ink sprayed to these regions according to a first power. When printing the planar printing region which is not an edge region, the printhead is controlled to spray the second ink for printing, and the UV curing device is controlled to cure the UV ink sprayed to the planar printing region according to a second power. The viscosity of the first ink sprayed to the curved surface printing region is greater than the viscosity of the second ink sprayed to the planar printing region. Due to the difference in viscosity, different curing powers are used when curing inks with different viscosities. Therefore, the first power is determined according to the viscosity of the first ink, and the second power is determined according to the viscosity of the second ink. In an embodiment, a mapping relationship or a relationship between the viscosity of the UV ink and the UV curing power can be obtained through repeated tests. When the viscosity of the ink is determined, the corresponding curing power of the ink can be directly determined according to the mapping relationship or the relationship. Different viscosities of the UV ink are used to print different shapes of the surface region of the battery, thereby improving the adhesion of the ink in the region where the ink is not easy to hang, ensuring the insulation of these regions, and thereby improving the overall insulation of the surface of the battery.

[0094] In summary, the battery surface printing method of the embodiment of the present application, by obtaining the shape of the battery to be printed; determine the preset printing area on the surface of the battery according to the shape of the battery; after controlling the nozzle to spray UV ink to the preset printing area, control the UV curing device to cure the UV ink in the preset printing area. The method of the present application is beneficial to the inkjet technology to efficiently and accurately spray the insulating UV ink to the preset printing area of the set battery surface. The cured UV ink can be closely attached to the battery surface, and no defects such as wrinkles or bubbles will be generated, so that a firm and beautiful insulating layer can be formed on the battery surface. Moreover, the ink amount can be adjusted according to the specific conditions of the battery surface, such as whether there are recesses, convex points and other defects, and different viscosity UV inks are used in different areas such as arc-shaped areas or flat areas to ensure the insulation of the ink film. Compared with the existing blue film coating process, the use of inkjet technology to form an insulating film layer has better uniformity, higher safety, and is more environmentally friendly.

[0095] Embodiment two

[0096] Please refer to Figure 7 The embodiment of the present application provides a battery surface printing device 200, the device 200 comprises:

[0097] The battery shape acquisition module 201 is used for acquiring the shape of the battery to be printed.

[0098] The preset printing area determination module 202 is used for determining the preset printing area on the surface of the battery according to the shape of the battery.

[0099] The printing and curing module 203 is used for controlling the nozzle to spray UV ink to the preset printing area and controlling the UV curing device to cure the UV ink in the preset printing area.

[0100] Preferably, the battery shape acquisition module 201 comprises:

[0101] The first acquisition unit is used for controlling the image acquisition device to acquire the image of the battery to be printed, and obtaining an acquisition image.

[0102] The shape acquisition unit is used for acquiring the shape of the battery by image analysis processing on the acquisition image.

[0103] Preferably, the printing and curing module 203 comprises:

[0104] The first printing unit is used for controlling the nozzle to spray a first ink amount of UV ink dots to the preset printing area of the battery surface.

[0105] The first curing unit is used for controlling the UV curing device to cure the UV ink sprayed to the preset printing area.

[0106] a second acquisition unit configured to control the image acquisition device to acquire the battery surface image and determine defect positions according to the battery surface image, wherein the defect positions include any one or more of recessed edge positions, protruding center positions;

[0107] a first correction printing area determination unit configured to determine a first correction printing area according to the defect positions;

[0108] a second printing unit configured to control the nozzle to spray a second amount of UV ink dots to the first correction printing area;

[0109] a second curing unit configured to control the UV curing device to cure the UV ink sprayed to the first correction printing area.

[0110] Preferably, the printing and curing module 203 comprises:

[0111] a third acquisition unit configured to control the image acquisition device to acquire the battery surface image and determine defect positions according to the battery surface image, wherein the defect positions include any one or more of recessed edge positions, protruding center positions;

[0112] a second correction printing area determination unit configured to determine a second correction printing area according to the defect positions, wherein the second correction printing area is located in the preset printing area;

[0113] a third printing unit configured to control the nozzle to spray a third amount of UV ink dots to the preset printing area except the second correction area, and control the nozzle to spray a fourth amount of UV ink dots to the second correction printing area when the nozzle printing position is in the second correction printing area, wherein the fourth amount is greater than the third amount;

[0114] a third curing unit configured to control the UV curing device to cure the UV ink sprayed to the preset printing area.

[0115] Preferably, the printing and curing module 203 comprises:

[0116] a curved surface printing area acquisition unit configured to acquire a curved surface shape area in the battery, denoted as a curved surface printing area;

[0117] a planar printing area acquisition unit configured to acquire a planar shape area in the battery, denoted as a planar printing area;

[0118] a fourth printing unit configured to control the nozzle to spray a first amount of ink to the curved surface printing area;

[0119] a fourth curing unit configured to control the UV curing device to cure the first ink of the curved printing area at a first power;

[0120] a fifth printing unit configured to control the printhead to spray the second ink to the planar printing area;

[0121] a fifth curing unit configured to control the UV curing device to cure the second ink of the planar printing area at a second power;

[0122] wherein the first ink and the second ink are UV inks with different viscosities, and the viscosity of the first ink is greater than the viscosity of the second ink.

[0123] In summary, the battery surface printing device provided by the embodiments of the present application acquires the shape of a battery to be printed, determines a preset printing area on the surface of the battery according to the shape of the battery, controls a printhead to spray UV ink to the preset printing area, and controls a UV curing device to cure the UV ink in the preset printing area. The method provided by the present application is conducive to the use of inkjet technology to efficiently and accurately spray insulating UV ink through a printhead to a preset printing area on a battery surface. The cured UV ink can be closely attached to the battery surface without defects such as wrinkles or bubbles, so that a firm and beautiful insulating layer can be formed on the battery surface. Furthermore, the amount of ink sprayed can be adjusted according to the specific conditions of the battery surface, such as whether there are defects such as recesses or protrusions, and different viscosities of UV ink can be used for different areas such as curved areas or planar areas to ensure the insulating property of the ink film. Compared with the existing blue film coating process, the use of inkjet technology to form an insulating film layer has better uniformity, higher safety, and is more environmentally friendly.

[0124] Embodiment Three

[0125] In addition, the battery surface printing method provided by the embodiments of the present application can be implemented by a battery surface printing device. Figure 8 A hardware structure schematic diagram of the battery surface printing device provided by the embodiments of the present application is shown.

[0126] The battery surface printing device can include a processor 301 and a memory 302 having computer program instructions stored therein.

[0127] Specifically, the processor 301 can include a central processing unit (CPU), or an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of the present application.

[0128] The memory 302 can include mass storage for data or instructions. By way of example, and not limitation, the memory 302 can include a hard disk drive (HDD), floppy disk drive, flash memory, compact disk, digital versatile disk, optical disk, tape, or other storage device or a combination of two or more of these. The memory 302 can be removable or non-removable (or fixed) as appropriate. The memory 302 can be internal or external as appropriate. In certain embodiments, the memory 302 is a non-volatile solid-state memory. In certain embodiments, the memory 302 includes read-only memory (ROM). The ROM can be mask programmed ROM, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), electrically alterable ROM (EAROM), or flash memory, or a combination of two or more of these, as appropriate.

[0129] The processor 301 implements the battery surface printing method of any of the above embodiments by reading and executing computer program instructions stored in the memory 302.

[0130] In one example, the battery surface printing device can further include a communication interface 303 and a bus 310. As shown, the processor 301, the memory 302, the communication interface 303 are connected through the bus 310 and complete communication with each other. Figure 8

[0131] The communication interface 303 is mainly used to realize the communication between the modules, devices, units and / or equipment in the embodiments of the application.

[0132] The bus 310 includes hardware, software, or both, that couples components of the battery surface printing device to each other. By way of example, and not limitation, the bus 310 can include an Accelerated Graphics Port (AGP) or other graphics bus, an Enhanced Industry Standard Architecture (EISA) bus, a Front Side Bus (FSB), a HyperTransport (HT) interconnect, an Industry Standard Architecture (ISA) bus, an InfiniBand (IB) interconnect, a Low Pin Count (LPC) bus, a memory bus, a Micro Channel Architecture (MCA) bus, a Peripheral Component Interconnect (PCI) bus, a PCI-Express (PCI-X) bus, a Serial Advanced Technology Attachment (SATA) bus, a Video Electronics Standards Association local (VLB) bus, or another suitable bus or interconnect, or a combination of two or more of these. Where appropriate, the bus 310 can include one or more buses. Although the present application is described and illustrated with a particular bus, the present application contemplates any suitable bus or interconnect.

[0133] Embodiment Four​

[0134] In addition, in combination with the battery surface printing method in the above embodiments, the embodiments of the present application can provide a computer readable storage medium for implementation. The computer readable storage medium has computer program instructions stored thereon; the computer program instructions are executed by the processor 301 to implement any one of the battery surface printing methods in the above embodiments.

[0135] In summary, the battery surface printing method, device, equipment and storage medium provided by the embodiments of the present application, by obtaining the shape of the battery to be printed; determining the preset printing area on the surface of the battery according to the shape of the battery; after controlling the nozzle to spray UV ink to the preset printing area, controlling the UV curing device to cure the UV ink in the preset printing area. The method of the present application is beneficial to the inkjet technology to efficiently and accurately spray the insulating UV ink through the nozzle to the preset printing area of the set battery surface. The cured UV ink can be closely attached to the battery surface, and will not produce defects such as wrinkles or bubbles, so as to form a firm and beautiful insulating layer on the battery surface, and the ink amount can also be adjusted according to the specific conditions of the battery surface, such as whether there are concave, recessed or convex defects, and different viscosity UV inks are used in different areas such as arc-shaped areas or flat areas to ensure the insulation of the ink film. Compared with the existing blue film coating process, the use of inkjet technology to form an insulating film layer has better uniformity, higher safety and is more environmentally friendly.

[0136] It should be clear that the present application is not limited to the specific configurations and processes described above and shown in the drawings. For the sake of brevity, detailed descriptions of known methods are omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present application is not limited to the specific steps described and shown, and those skilled in the art can make various changes, modifications and additions, or change the order between steps, after understanding the spirit of the present application.

[0137] The functional blocks shown in the structural block diagrams described above can be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, they can be, for example, electronic circuits, application specific integrated circuits (ASICs), appropriate firmware, plug-ins, functional cards, and the like. When implemented in software, the elements of the present application are program or code segments that are used to perform the required tasks. The program or code segments can be stored in a machine-readable medium or transmitted through a data signal carried in a carrier wave over a transmission medium or communication link. A "machine-readable medium" includes any medium that can store or transport information. Examples of machine-readable media include electronic circuits, semiconductor memory devices, ROM, flash memory, erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, optical fiber media, radio frequency (RF) links, and the like. The code segments can be downloaded via computer networks such as the Internet, intranets, and the like.

[0138] It should also be noted that the exemplary embodiments mentioned in the present application describe some methods or systems based on a series of steps or devices. However, the present application is not limited to the order of the above steps, that is, the steps can be performed in the order mentioned in the embodiments, or in an order different from that in the embodiments, or several steps can be performed simultaneously.

[0139] The above description is merely a specific implementation of the present application. Those skilled in the art can clearly understand the specific working processes of the above-described system, modules and units for the convenience and brevity of description, and the corresponding processes in the foregoing method embodiments can be referred to, which will not be described herein. It should be understood that the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present application, and these modifications or replacements should be covered within the protection scope of the present application.

Claims

1. A method of printing on a surface of a battery, the method comprising: The method comprises: acquiring the shape of a battery to be printed; determining a preset printing area on the surface of the battery according to the shape of the battery; controlling a nozzle to spray UV ink to the preset printing area and controlling a UV curing device to cure the UV ink in the preset printing area; wherein the surface of the battery is an arc surface at any two faces of the battery, and the controlling of the nozzle to spray UV ink to the preset printing area and the controlling of the UV curing device to cure the UV ink in the preset printing area comprises: acquiring an arc surface area in the battery, denoted as an arc surface printing area; acquiring a planar area in the battery, denoted as a planar printing area; controlling the nozzle to spray first ink to the arc surface printing area; controlling the UV curing device to cure the first ink in the arc surface printing area at a first power; controlling the nozzle to spray second ink to the planar printing area; controlling the UV curing device to cure the second ink in the planar printing area at a second power; wherein the first ink and the second ink are UV inks with different viscosities, and the viscosity of the first ink is greater than the viscosity of the second ink.

2. The battery surface printing method of claim 1, wherein, The acquiring of the shape of the battery to be printed comprises: controlling an image acquisition device to acquire an image of the battery to be printed to obtain an acquired image; performing image analysis and processing on the acquired image to acquire the shape of the battery.

3. The battery surface printing method according to claim 1 or 2, characterized by, The controlling of the nozzle to spray UV ink to the preset printing area and the controlling of the UV curing device to cure the UV ink in the preset printing area further comprises: controlling the nozzle to spray a first amount of UV ink dots to the preset printing area on the surface of the battery; controlling the UV curing device to cure the UV ink sprayed to the preset printing area; controlling an image acquisition device to acquire a battery surface image and determining a defect site according to the battery surface image, wherein the defect site comprises any one or more of a recessed edge site and a protruding center site; determining a first correction printing area according to the defect site; controlling the nozzle to spray a second amount of UV ink dots to the first correction printing area; controlling the UV curing device to cure the UV ink sprayed to the first correction printing area.

4. The battery surface printing method of claim 3, wherein, Before the controlling of the nozzle to spray a second amount of UV ink dots to the first correction printing area, further comprising: acquiring a distance between the highest point of the defect site and the surface of the battery after the first amount of UV ink is sprayed; determining the second amount according to the distance; determining the size of the UV ink dots sprayed by the nozzle according to the second amount.

5. The battery surface printing method according to claim 1 or 2, characterized by, The controlling of the nozzle to spray UV ink to the preset printing area and the controlling of the UV curing device to cure the UV ink in the preset printing area further comprises: controlling an image acquisition device to acquire a battery surface image and determining a defect site according to the battery surface image, wherein the defect site comprises any one or more of a recessed edge site and a protruding center site; determining a second correction printing area according to the defect site, wherein the second correction printing area is located in the preset printing area; controlling the printhead to eject a third amount of UV ink dots to the preset printing area except the second correction printing area, and controlling the printhead to eject a fourth amount of UV ink dots to the second correction printing area when the printhead printing position is in the second correction printing area, wherein the fourth amount is greater than the third amount; controlling the UV curing device to cure the UV ink ejected to the preset printing area.

6. The battery surface printing method of claim 1, wherein, Before the controlling the UV curing device to cure the UV ink in the preset printing area, the method further comprises: obtaining a mapping relationship between viscosity of the UV ink and curing power; determining the first power according to the viscosity of the first ink and determining the second power according to the viscosity of the second ink according to the mapping relationship.

7. A battery surface printing apparatus characterized by comprising: The apparatus comprises: a battery shape obtaining module configured to obtain a shape of a battery to be printed; a preset printing area determining module configured to determine a preset printing area on a surface of the battery according to the shape of the battery; a printing and curing module configured to control a printhead to eject UV ink to the preset printing area and control a UV curing device to cure the UV ink in the preset printing area, wherein any two faces of the battery surface meet at a curved surface, and the controlling the printhead to eject UV ink to the preset printing area and the controlling the UV curing device to cure the UV ink in the preset printing area comprises: obtaining a curved surface shape area in the battery, denoted as a curved surface printing area; obtaining a planar shape area in the battery, denoted as a planar printing area; controlling the printhead to eject first ink to the curved surface printing area; controlling the UV curing device to cure the first ink in the curved surface printing area at a first power; controlling the printhead to eject second ink to the planar printing area; and controlling the UV curing device to cure the second ink in the planar printing area at a second power; wherein the first ink and the second ink are UV inks with different viscosities, and the viscosity of the first ink is greater than the viscosity of the second ink.

8. A battery surface printing apparatus characterized by comprising: comprises: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any one of claims 1-6.

9. A storage medium having stored thereon computer program instructions, characterized in that, comprises: at least one processor, at least one memory, and computer program instructions stored in the memory that, when executed by the processor, implement the method of any one of claims 1-6.

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