Battery surface printing method, device and equipment and storage medium

Abstract

The invention discloses a battery surface printing method, device and equipment and a storage medium, and relates to the technical field of ink-jet printing. The method comprises the steps that the shape of a battery to be printed is obtained; determining a preset printing area on the surface of the battery according to the shape of the battery; and after a spray head is controlled to spray UV ink to the preset printing area, a UV curing device is controlled to cure the UV ink in the preset printing area. According to the method disclosed by the invention, the insulated UV ink is efficiently and accurately sprayed to the preset printing area on the surface of the set battery through the spray head by virtue of an ink-jet technology, the cured UV ink can be tightly attached to the surface of the battery, and defects such as wrinkles or bubbles cannot be generated, so that a firm and attractive insulating layer can be formed on the surface of the battery, and the service life of the battery is prolonged. Compared with the existing blue film coating process, the method has the advantages that the insulating film layer formed by the ink jet technology is better in uniformity, higher in safety and more environment-friendly.

Description

Technical Field

[0001] The present invention relates to the technical field of inkjet printing, and in particular to a battery surface printing method, device, equipment and storage medium. Background Art

[0002] The cells of existing new energy batteries are often protected by aluminum shells (battery shells), and the outer surface of the aluminum shell is usually coated with a layer of blue film (hereinafter referred to as blue film). The blue film can play an insulating and buffering role, and can be used to block the impact of various faults of a single cell on other cells, preventing "one loss and 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, and the process cost of setting the blue film on the battery surface is high and the applicability is poor. In addition, the blue film is prone to bubbles and other problems when it is coated on the battery surface. These defects or problems may affect the appearance of the product at the least, and may even damage the product function of the entire battery at the worst.

[0003] Inkjet printing technology refers to the technology of spraying ink droplets onto the printing medium through the nozzle on the nozzle to obtain images or text. The printing medium is generally two-dimensional, but with the development of technology and the expansion of demand, inkjet printing technology has gradually been applied to the printing of three-dimensional printing media, such as cylindrical object surface printing, battery surface printing, etc. How to use inkjet printing technology to spray ink on the battery surface and form a layer of insulating medium with the same function as the above-mentioned blue film is an urgent problem to be solved in the manufacturing of new energy batteries. Summary of the invention

[0004] In view of this, embodiments of the present invention provide a battery surface printing method, device, equipment and storage medium to solve the problem in the prior art that defects are easily generated in the insulating layer coated on the battery surface.

[0005] In a first aspect, an embodiment of the present invention provides a battery surface printing method, the method comprising:

[0006] Obtain the shape of the battery to be printed;

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

[0008] The nozzle is controlled to spray UV ink to the preset printing area and the UV curing device is controlled to cure the UV ink in the preset printing area.

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

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

[0011] Perform image analysis processing on the collected image to obtain the shape of the battery.

[0012] Preferably, the 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 comprises:

[0013] Controlling the nozzle to spray UV ink dots of a first ink volume to a preset printing area on the battery surface;

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

[0015] Controlling the image acquisition device to acquire a battery surface image and determine a defective portion according to the battery surface image, wherein the defective portion includes any one or more of a concave edge portion and a convex center portion;

[0016] Determine a first correction printing area according to the defective part;

[0017] Control the nozzle to spray UV ink dots of a second ink volume to the first correction printing area;

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

[0019] Preferably, before the control nozzle sprays the UV ink dots of the second ink amount to the first correction printing area, the method further includes:

[0020] Obtaining the distance between the highest point of the defective part and the surface of the battery after the first amount of UV ink is sprayed;

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

[0022] The size of the UV ink dots ejected by the nozzle is determined according to the second ink volume.

[0023] Preferably, the 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 comprises:

[0024] Controlling an image acquisition device to acquire the battery surface image and determine a defective portion according to the battery surface image, wherein the defective portion includes any one or more of a concave edge portion and a convex center portion;

[0025] Determine a second correction printing area according to the defective part, wherein the second correction printing area is located in the preset printing area;

[0026] Control the nozzle to spray UV ink dots of a third ink amount to the preset printing area except the second correction area, and when the nozzle printing position is in the second correction printing area, control the nozzle to spray UV ink dots of a fourth ink amount to the second correction printing area, wherein the fourth ink amount is greater than the third ink amount;

[0027] The UV curing device is controlled to cure the UV ink sprayed onto the preset printing area.

[0028] Preferably, the junction of any two surfaces of the battery is a curved surface, and the controlling 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 includes:

[0029] Obtaining an arc-shaped area in the battery, which is recorded as an arc-printed area;

[0030] Obtaining a plane shape area in the battery, recorded as a plane printing area;

[0031] Controlling the nozzle to spray the first ink to the curved surface printing area;

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

[0033] Controlling the nozzle to spray the second ink onto 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] 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 control nozzle sprays UV ink to the preset printing area, before the control UV curing device is controlled to cure the UV ink in the preset printing area, the method further includes:

[0037] Obtain the mapping relationship between UV ink viscosity and curing power;

[0038] 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 according to the mapping relationship.

[0039] In a second aspect, an embodiment of the present invention provides a battery surface printing device, the device comprising:

[0040] A battery shape acquisition module, used to acquire the shape of the battery to be printed;

[0041] A preset printing area determination module, used to determine a preset printing area on the surface of the battery according to the shape of the battery;

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

[0043] In a third aspect, an embodiment of the present invention provides a battery surface printing device, comprising: at least one processor, at least one memory, and computer program instructions stored in the memory, and when the computer program instructions are executed by the processor, the method of the first aspect in the above embodiment is implemented.

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

[0045] In summary, the beneficial effects of the present invention are as follows:

[0046] The battery surface printing method, device, equipment and storage medium provided by the embodiment of the present invention obtain the shape of the battery to be printed; determine the preset printing area on the battery surface according to the shape of the battery; control the nozzle to spray UV ink to the preset printing area, and then control the UV curing device to cure the UV ink in the preset printing area. The method of the present invention is conducive to the inkjet technology to efficiently and accurately spray the insulating UV ink to the preset printing area of ​​the set battery surface through the nozzle. The cured UV ink can fit tightly on the battery surface without producing 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 concave and convex points, and UV inks of different viscosities can be used for different areas such as arc areas or plane areas to ensure the insulation of the ink film. Compared with the existing blue film coating process, the insulating film layer formed by inkjet technology is more uniform, safer, and more environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solution of the embodiment of the present invention, the drawings required for use in the embodiment of the present invention will be briefly introduced below. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work, and these are all within the protection scope of the present invention.

[0048] Figure 1a Schematic diagram of the structure of the battery inkjet printing system in an embodiment of the present invention.

[0049] Figure 1bSchematic diagram of the structure of the battery inkjet printing system in an embodiment of the present invention.

[0050] Figure 2 It is a schematic flow chart of a battery surface printing method according to an embodiment of the present invention.

[0051] Figure 3 Schematic diagram of defective parts on the battery surface in an embodiment of the present invention.

[0052] Figure 4 yes Figure 2 Specific flow chart of step S3 in FIG.

[0053] Figure 5 yes Figure 2 Specific flow chart of step S3 in FIG.

[0054] Figure 6 yes Figure 2 Specific flow chart of step S3 in FIG.

[0055] Figure 7 It is a schematic structural diagram of a battery surface printing device according to an embodiment of the present invention.

[0056] Figure 8 It is a schematic structural diagram of a battery surface printing device according to an embodiment of the present invention. DETAILED DESCRIPTION

[0057] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and Examples. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0058] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0059] Embodiment 1

[0060] The embodiment of the present invention provides a battery surface printing method, which is applicable to a battery inkjet printing system, and the battery inkjet printing system is used for printing the surface of a battery such as a new energy power battery. Figure 1a As shown, the battery inkjet printing system includes at least one printing module 10, and the printing module 10 includes at least one nozzle 11 and a curing device 12. Any side of the battery 2 is set under the printing module 10, and the nozzle 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 surface of the battery. Since the battery 2 is often in the shape of a rectangular parallelepiped, it has 6 faces, including the front 21, the front 22, the side 23, the side 24, the side 24, and the side 26 (the front 21 is located below the printing module 10 in Figure 1, and the front 22 is opposite to the front 21). When printing the battery, after completing the printing of one side, turn the battery over and set its other unprinted side under the printing module 10, and continue printing the other side, and so on until all sides are printed. In another embodiment, as Figure 1b As shown, the battery inkjet printing system includes a printing module 10, a printing module 20 and a printing module 30, wherein the printing module 10 is used to print the front 21 and the front 22 of the battery 2, the printing module 20 is used to print the side 23 and the side 24 of the battery, and the printing module 30 is used to print the side 25 and the side 26 of the battery. Multiple printing modules are used to print multiple sides of the battery at the same time to improve printing efficiency. Similarly, as Figure 1b As shown, after the printing of the front side 21, the side 23 and the side 25 is completed, the front side 22, the side 24 and the side 26 of the battery are printed by moving the battery or the printing module 10, 20, 30, so as to complete the printing of the entire battery surface.

[0061] In the embodiment of the present invention, the surface of the battery is inkjet printed with UV ink using inkjet printing technology to form a layer of insulating medium with functions similar to the above-mentioned blue film. The use of UV ink printing and UV light curing device can make the ink sprayed onto the surface of the battery dry (cured) immediately after spraying. UV light curing, i.e. ultraviolet curing, is a reaction of instant polymerization of ink and material initiated by irradiation of a light source with a wavelength of 200 nanometers to 450 nanometers in ultraviolet light. The cured ink has no solvent components and no volatile organic compounds (VOCs), and has the characteristics of environmental protection, high efficiency, and beautiful appearance. The cured UV ink can fit tightly on the surface of the battery without defects such as wrinkles or bubbles, thereby forming a firm and beautiful insulating layer on the surface of the battery.

[0062] See also Figure 2The battery surface printing method specifically comprises the following steps:

[0063] S1: Obtain 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: Control the nozzle to spray UV ink to the preset printing area and control 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. Preferably, an image acquisition device can also be set in the battery inkjet printing system to realize automatic recognition of the battery shape. An image acquisition device such as a CCD / CMOS camera or a 3D camera is set in the battery inkjet printing system, and the battery shape is obtained by controlling the image acquisition device to acquire the image of the battery and analyzing and processing. Exemplarily, the images of the six faces of the battery are captured by a CCD / CMOS camera, and then the collected images are processed and analyzed to obtain the shape of the battery and the shape and size of each face. In another embodiment, a stereoscopic image of the battery is captured by a deep vision camera or a 3D camera, and the collected images are processed and analyzed to obtain the shape of the battery and the shape and size of each face. 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. The printing control software determines the printing area parameters corresponding to each face based on this information, thereby determining the printing area of ​​the entire battery surface, which is recorded as the preset printing area. Integrating an image acquisition device in the battery inkjet printing system to automatically acquire the shape information of the battery to be printed and send it to the printing control software to automatically determine the preset printing area is conducive to the automation and intelligence of the battery inkjet printing system, improving production efficiency and providing users with a good experience.

[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 battery surface to form a layer of UV ink film on the battery surface. Exemplarily, when using the battery inkjet printing system shown in Figure 1, according to the preset printing area, the nozzle 11 in the printing module 10 is controlled to first spray the UV ink onto the front side 21 of the battery, and at the same time the UV curing device 12 cures the sprayed UV ink. After the printing and curing of the front side 21 is completed, the battery is flipped over or the printing module 10 is moved to print and cure the front side 22. After the printing and curing of the front side 22 is completed, the battery is flipped over or the printing module 10 is moved to perform inkjet printing and curing on the side 23... thereby completing the inkjet printing and curing of each side of the battery one by one. When using a battery inkjet printing system such as Figure 1bIn the battery inkjet printing system shown, the nozzles in the printing module 10, the printing module 20 and the printing module 30 respectively spray UV ink onto the front side 21, the side 23 and the side 25 of the battery, and at the same time, the UV curing device cures the ink sprayed onto the surface of the battery. After the front side 21, the side 23 and the side 25 are printed and cured, the battery is moved or the printing modules 10, 20, 30 are moved to print and cure the front side 22, the side 24 and the side 26 respectively, thereby completing the inkjet printing and curing of each side of the battery.

[0068] During the battery manufacturing process, it is difficult to make the battery surface completely flat because the outermost aluminum shell is made of metal. There will be more or less defects such as grooves, pits, concave spots or convexities. Generally, after spraying UV ink on the battery surface, the UV ink will naturally flow flat under the action of surface tension, such as Figure 3 As shown, due to the existence of the above defects, the leveled UV ink easily forms a film layer that is weaker than other parts around the defects, such as the concave edge parts 31 of grooves, pits, and spots, and the raised central parts 32, and these weak film layer parts bring certain risks to the insulation of the entire battery.

[0069] To avoid this risk, see Figure 4 In one embodiment, after the nozzle is controlled to spray UV ink to the preset printing area, controlling the UV curing device to cure the UV ink in the preset printing area includes:

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

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

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

[0073] S34: determining a first correction printing area according to the defective part;

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

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

[0076] Specifically, first, the nozzle is controlled to spray UV ink dots of a first ink volume to a preset printing area on the battery surface and the UV curing device is controlled to cure the ink to form a UV ink film of a first thickness. The first ink volume here refers to the ink volume of each UV ink dot. The larger the ink dot, the greater its ink volume. For example, existing inkjet printing equipment can often spray four similar ink dots, namely, large ink dots, medium ink dots, small ink dots and empty ink dots. Among them, large ink dots have the largest ink volume, followed by medium ink dots, and small ink dots have the smallest ink volume. Empty ink dots indicate no ink. The first ink volume can be determined according to actual conditions and is not limited here. After the battery surface is covered with a layer of UV ink film, the image acquisition device is controlled to acquire an image of the battery surface covered with the UV ink film of the first thickness, the acquired image is processed and analyzed, and defective parts such as recessed edge parts such as grooves, pits, and concave points, and raised central parts are identified, and the corresponding first correction printing areas are determined according to the positions of these defective parts, and then the nozzle is controlled to spray UV ink dots of the second ink amount to the first correction printing areas corresponding to these defective positions, and then the UV ink of this part of the printing area is cured, so as to add another layer of UV ink film to the defective parts, that is, these weak film layer parts are thickened or laminated, so as to strengthen the insulation of these defective parts.

[0077] It is worth pointing out that the second ink volume can be determined based on the distance (gap) between the highest point or average height of the defective part and the battery surface covered with the UV ink film of the first thickness. When the above gap is large, all large ink dots can be used for printing, and when the gap is small, medium or small ink dots can be used for printing. When the gap is large and the thickness of the UV film formed by only one printing and curing is not enough, multiple covering printings can be performed to better improve the insulation of the defective part.

[0078] See also Figure 5 In another embodiment, after the nozzle is controlled to spray UV ink to the preset printing area, controlling the UV curing device to cure the UV ink in the preset printing area includes:

[0079] S301: Controlling an image acquisition device to acquire the battery surface image and determine a defective portion according to the battery surface image, wherein the defective portion includes any one or more of a concave edge portion and a convex center portion;

[0080] S302: determining a second correction printing area according to the defective part, wherein the second correction printing area is located in the preset printing area;

[0081] S303: Control the nozzle to spray UV ink dots of a third ink amount to the preset printing area except the second correction area, and when the nozzle printing position is in the second correction printing area, control the nozzle to spray UV ink dots of a fourth ink amount to the second correction printing area, wherein the fourth ink amount is greater than the third ink amount;

[0082] S304: Control the UV curing device to cure the UV ink sprayed onto the preset printing area.

[0083] Specifically, the image acquisition device can be used to first acquire images of each surface of the battery surface and analyze and process the acquired images to identify defective parts such as the concave edge part and the convex center part, and the corresponding second correction printing area is determined according to the position of the defective part, and then the nozzle is controlled to spray the UV ink dots of the third ink amount to the preset printing area on the battery surface except the second correction printing area. However, when printing to the second correction printing area corresponding to the defective part, the ink amount of the ink dots sprayed by the nozzle is changed, such as increasing the ink amount value by the fourth ink amount, and the UV curing device is controlled to cure the UV ink sprayed to the battery surface. Preferably, the curing power of the UV curing device is dynamically adjusted according to the ink amount, but 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 defective part to improve the insulation of the defective part. Changing the ink spraying amount in real time according to the defective position during the battery surface printing process is relatively more efficient and helps to improve production efficiency. It is worth pointing out that the size of the fourth ink volume can also be determined according to the distance between the highest point or average height of the defective part and the battery surface before printing the UV ink. When the above gap is large, all large ink dots can be used for printing. When the gap is small, medium or small ink dots can be used for printing.

[0084] In order to improve battery safety, strength and performance, the joints of the various surfaces in the aluminum shell of the rectangular new energy battery will be designed as curved surfaces. The edges of the curved surfaces can reduce stress concentration, improve the strength of the battery shell, and help to better dissipate heat, improve the thermal management of the battery, and reduce the risk of overheating. When printing the edge areas of the curved surface, the ink easily slides down the curved surface because these areas have a certain curvature (called difficult to hang ink in the industry), resulting in a weak ink layer in the edge areas of these curved surfaces, which will also reduce the insulation of these parts.

[0085] To improve insulation in the edge area, see Figure 6 In one embodiment, after the nozzle is controlled to spray UV ink to the preset printing area, controlling the UV curing device to cure the UV ink in the preset printing area includes:

[0086] S3001: obtaining an arc-shaped area in the battery, and recording it as an arc-shaped printing area;

[0087] S3002: Obtaining a plane shape area in the battery, recorded as a plane printing area;

[0088] S3003: Control the nozzle to spray the first ink onto the curved surface printing area;

[0089] S3004: Controlling the UV curing device to cure the first ink in the curved surface printing area at a first power;

[0090] S3005: Control the nozzle to spray the second ink onto the planar printing area;

[0091] S3006: Controlling the UV curing device to cure the second ink in the planar printing area at 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 be used to acquire an image of the battery surface, analyze and process the acquired image, and divide the preset printing area into a curved surface printing area and a flat surface printing area. The curved surface printing area corresponds to the edge area where each surface of the battery intersects. When printing these curved surface printing areas, the nozzle is controlled to spray the UV ink of the first ink for printing, and the UV curing device is controlled to cure the UV ink sprayed to these areas according to the first power. When printing the flat surface printing area of ​​the non-edge area, the nozzle is controlled to spray the second ink for printing, and the UV curing device is controlled to cure the UV ink sprayed to the flat surface printing area according to the second power. Among them, the viscosity of the first ink sprayed to the curved surface printing area is greater than the second ink sprayed to the flat surface printing area. Due to the inconsistency of viscosity, it is preferred that different curing powers are used when curing inks of different viscosities, so 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 one embodiment, the mapping relationship or relationship between the viscosity of the UV ink and the UV curing power can be obtained through repeated experiments. After the ink viscosity is determined, the curing power corresponding to the ink can be directly determined according to the mapping relationship or relationship. Use UV inks of different viscosities to print battery surface areas of different shapes to improve ink adhesion in areas that are not easily blocked by ink, ensure the insulation of these areas, and thus improve the overall insulation of the battery surface.

[0094] In summary, the battery surface printing method of the embodiment of the present invention obtains the shape of the battery to be printed; determines the preset printing area on the battery surface according to the shape of the battery; controls the nozzle to spray UV ink to the preset printing area, and then controls the UV curing device to cure the UV ink in the preset printing area. The method of the present invention is conducive to the inkjet technology to efficiently and accurately spray the insulating UV ink to the preset printing area of ​​the set battery surface through the nozzle. The cured UV ink can fit tightly on the battery surface without producing defects such as wrinkles or bubbles, so that a firm and beautiful insulating layer can be formed on the battery surface. In addition, 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 concave and convex points, and UV inks of different viscosities can be used for different areas such as arc areas or plane areas to ensure the insulation of the ink film. Compared with the existing blue film coating process, the insulating film layer formed by inkjet technology is more uniform, safer, and more environmentally friendly.

[0095] Embodiment 2

[0096] See also Figure 7 The embodiment of the present invention provides a battery surface printing device 200, the device 200 comprising:

[0097] A battery shape acquisition module 201 is used to acquire the shape of the battery to be printed;

[0098] A preset printing area determining module 202, configured to determine a 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 to control the nozzle to spray UV ink to the preset printing area and control the UV curing device to cure the UV ink in the preset printing area.

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

[0101] A first acquisition unit, used for controlling an image acquisition device to acquire an image of the battery to be printed, to obtain an acquired image;

[0102] The shape acquisition unit is used to perform image analysis processing on the collected image to acquire the shape of the battery.

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

[0104] A first printing unit, used for controlling the nozzle to spray UV ink dots of a first ink volume to a preset printing area on the battery surface;

[0105] A first curing unit, used for controlling the UV curing device to cure the UV ink sprayed onto the preset printing area;

[0106] A second acquisition unit, used to control the image acquisition device to acquire a battery surface image and determine a defective part according to the battery surface image, wherein the defective part includes any one or more of a concave edge part and a convex center part;

[0107] A first correction printing area determining unit, configured to determine a first correction printing area according to the defective part;

[0108] a second printing unit, used for controlling the nozzle to spray a second amount of UV ink dots to the first correction printing area;

[0109] The second curing unit is used 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 includes:

[0111] A third acquisition unit, used to control the image acquisition device to acquire the battery surface image and determine the defective part according to the battery surface image, wherein the defective part includes any one or more of a concave edge part and a convex center part;

[0112] A second correction printing area determining unit, configured to determine a second correction printing area according to the defective part, 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 UV ink dots of a third ink amount to the preset printing area except the second correction area, and when the nozzle printing position is in the second correction printing area, control the nozzle to spray UV ink dots of a fourth ink amount to the second correction printing area, wherein the fourth ink amount is greater than the third ink amount;

[0114] The third curing unit is used to control the UV curing device to cure the UV ink sprayed onto the preset printing area.

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

[0116] A curved surface printing area acquisition unit, used for acquiring a curved surface area in the battery, which is recorded as a curved surface printing area;

[0117] The plane printing area acquisition unit is used to acquire a plane shape area in the battery, which is recorded as a plane printing area;

[0118] A fourth printing unit, used for controlling the nozzle to spray the first ink to the curved surface printing area;

[0119] A fourth curing unit, used for controlling the UV curing device to cure the first ink in the curved surface printing area at a first power;

[0120] A fifth printing unit, used for controlling the nozzle to spray the second ink to the planar printing area;

[0121] A fifth curing unit, used for controlling the UV curing device to cure the second ink in the planar printing area at a second power;

[0122] 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 embodiment of the present invention obtains the shape of the battery to be printed; determines the preset printing area on the battery surface according to the shape of the battery; controls the nozzle to spray UV ink to the preset printing area, and then controls the UV curing device to cure the UV ink in the preset printing area. The method of the present invention is conducive to the inkjet technology to efficiently and accurately spray the insulating UV ink to the preset printing area of ​​the set battery surface through the nozzle. The cured UV ink can fit tightly on the battery surface without producing 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 concave and convex points, and different viscosities of UV ink can be used for different areas such as arc areas or plane areas to ensure the insulation of the ink film. Compared with the existing blue film coating process, the insulating film layer formed by inkjet technology is more uniform, safer, and more environmentally friendly.

[0124] Embodiment 3

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

[0126] The battery surface printing device may include a processor 301 and a memory 302 storing computer program instructions.

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

[0128] The memory 302 may include a large capacity memory for data or instructions. For example, but not limitation, the memory 302 may include a hard disk drive (HDD), a floppy disk drive, a flash memory, an optical disk, a magneto-optical disk, a magnetic tape, or a universal serial bus (USB) drive or a combination of two or more of these. In appropriate cases, the memory 302 may include a removable or non-removable (or fixed) medium. In appropriate cases, the memory 302 may be inside or outside the data processing device. In a specific embodiment, the memory 302 is a non-volatile solid-state memory. In a specific embodiment, the memory 302 includes a read-only memory (ROM). In appropriate cases, the ROM may be a mask-programmed ROM, a programmable ROM (PROM), an erasable PROM (EPROM), an electrically erasable PROM (EEPROM), an electrically rewritable ROM (EAROM) or a flash memory or a combination of two or more of these.

[0129] The processor 301 reads and executes the computer program instructions stored in the memory 302 to implement any one of the battery surface printing methods in the above embodiments.

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

[0131] The communication interface 303 is mainly used to implement the communication between the modules, devices, units and / or equipment in the embodiment of the present invention.

[0132] Bus 310 includes hardware, software or both, and the parts of battery surface printing equipment are coupled to each other.For example, but not limitation, bus 310 may include accelerated graphics port (AGP) or other graphics bus, enhanced industrial standard architecture (EISA) bus, front side bus (FSB), hypertransport (HT) interconnection, industrial standard architecture (ISA) bus, infinite bandwidth interconnection, low pin count (LPC) bus, memory bus, micro channel architecture (MCA) bus, peripheral component interconnection (PCI) bus, PCI-Express (PCI-X) bus, serial advanced technology attachment (SATA) bus, video electronics standard association local (VLB) bus or other suitable bus or two or more of these combinations. In suitable cases, bus 310 may include one or more buses. Although the embodiment of the present invention describes and shows a specific bus, the present invention considers any suitable bus or interconnection.

[0133] Embodiment 4

[0134] In addition, in combination with the battery surface printing method in the above embodiment, the embodiment of the present invention can provide a computer-readable storage medium for implementation. The computer-readable storage medium stores computer program instructions; when the computer program instructions are executed by the processor 301, any one of the battery surface printing methods in the above embodiment is implemented.

[0135] In summary, the battery surface printing method, device, equipment and storage medium provided by the embodiments of the present invention obtain the shape of the battery to be printed; determine the preset printing area on the battery surface according to the shape of the battery; control the nozzle to spray UV ink to the preset printing area, and then control the UV curing device to cure the UV ink in the preset printing area. The method of the present invention is conducive to the inkjet technology to efficiently and accurately spray the insulating UV ink to the preset printing area of ​​the set battery surface through the nozzle. The cured UV ink can fit tightly on the battery surface without producing defects such as wrinkles or bubbles, so that a firm and beautiful insulating layer can be formed on the battery surface. In addition, 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 concave and convex points, and different viscosities of UV ink can be used for different areas such as arc areas or plane areas to ensure the insulation of the ink film. Compared with the existing blue film coating process, the insulating film layer formed by inkjet technology is more uniform, safer, and more environmentally friendly.

[0136] It should be clear that the present invention is not limited to the specific configuration and processing described above and shown in the figures. For the sake of simplicity, a detailed description of the known method is omitted here. In the above embodiments, several specific steps are described and shown as examples. However, the method process of the present invention 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 the steps after understanding the spirit of the present invention.

[0137] The functional blocks shown in the above-described block diagram can be implemented as hardware, software, firmware or a combination thereof. When implemented in hardware, it can be, for example, an electronic circuit, an application specific integrated circuit (ASIC), appropriate firmware, a plug-in, a function card, etc. When implemented in software, the elements of the present invention are programs or code segments that are used to perform the required tasks. The program or code segment can be stored in a machine-readable medium, or transmitted on a transmission medium or a communication link by a data signal carried in a carrier wave. "Machine-readable medium" can include any medium capable of storing or transmitting 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, etc. The code segment can be downloaded via a computer network such as the Internet, an intranet, etc.

[0138] It should also be noted that the exemplary embodiments mentioned in the present invention describe some methods or systems based on a series of steps or devices. However, the present invention 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 a different order from the embodiments, or several steps can be performed simultaneously.

[0139] The above is only a specific implementation of the present invention. Those skilled in the art can clearly understand that for the convenience and simplicity of description, the specific working process of the system, module and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here. It should be understood that the protection scope of the present invention is not limited to this. Any technician familiar with the technical field can easily think of various equivalent modifications or replacements within the technical scope disclosed by the present invention, and these modifications or replacements should be covered within the protection scope of the present invention.

Claims

1. A battery surface printing method, characterized in that: The method comprises: Obtain the shape of the battery to be printed; Determining a preset printing area on the surface of the battery according to the shape of the battery; The nozzle is controlled to spray UV ink to the preset printing area and the UV curing device is controlled to cure the UV ink in the preset printing area.

2. The battery surface printing method according to claim 1, characterized in that: The step of obtaining the shape of the battery to be printed comprises: Controlling the image acquisition device to acquire the image of the battery to be printed to obtain an acquired image; Perform image analysis processing on the collected image to obtain the shape of the battery.

3. The battery surface printing method according to claim 1 or 2, characterized in that: The 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 comprises: Controlling the nozzle to spray UV ink dots of a first ink volume to a preset printing area on the battery surface; Controlling the UV curing device to cure the UV ink sprayed onto the preset printing area; Controlling the image acquisition device to acquire a battery surface image and determine a defective portion according to the battery surface image, wherein the defective portion includes any one or more of a concave edge portion and a convex center portion; Determine a first correction printing area according to the defective part; Control the nozzle to spray UV ink dots of a second ink volume to the first correction printing area; The UV curing device is controlled to cure the UV ink sprayed to the first correction printing area.

4. The battery surface printing method according to claim 3, characterized in that: Before the control nozzle sprays the UV ink dots of the second ink amount to the first correction printing area, the method further includes: Obtaining the distance between the highest point of the defective part and the surface of the battery after the first amount of UV ink is sprayed; determining the second ink amount according to the distance; The size of the UV ink dots ejected by the nozzle is determined according to the second ink volume.

5. The battery surface printing method according to claim 1 or 2, characterized in that: The 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 comprises: Controlling an image acquisition device to acquire the battery surface image and determine a defective portion according to the battery surface image, wherein the defective portion includes any one or more of a concave edge portion and a convex center portion; Determine a second correction printing area according to the defective part, wherein the second correction printing area is located in the preset printing area; Control the nozzle to spray UV ink dots of a third ink amount to the preset printing area except the second correction area, and when the nozzle printing position is in the second correction printing area, control the nozzle to spray UV ink dots of a fourth ink amount to the second correction printing area, wherein the fourth ink amount is greater than the third ink amount; The UV curing device is controlled to cure the UV ink sprayed onto the preset printing area.

6. The battery surface printing method according to claim 1 or 2, characterized in that: The connection between any two surfaces of the battery surface is a curved surface, and the control nozzle sprays UV ink to the preset printing area and controls the UV curing device to cure the UV ink in the preset printing area, including: Obtaining an arc-shaped area in the battery, which is recorded as an arc-printed area; Obtaining a plane shape area in the battery, recorded as a plane printing area; Controlling the nozzle to spray the 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 nozzle to spray the second ink onto the planar printing area; Controlling the UV curing device to cure the second ink in the planar printing area at a second power; 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.

7. The battery surface printing method according to claim 6, characterized in that: After the control nozzle sprays UV ink to the preset printing area, before the UV curing device is controlled to cure the UV ink in the preset printing area, the method further includes: Obtain the mapping relationship between UV ink viscosity and curing power; 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 according to the mapping relationship.

8. A battery surface printing device, characterized in that: The device comprises: A battery shape acquisition module, used to acquire the shape of the battery to be printed; A preset printing area determination module, used to determine a preset printing area on the surface of the battery according to the shape of the battery; The printing and curing module is used to control the nozzle to spray UV ink to the preset printing area and control the UV curing device to cure the UV ink in the preset printing area.

9. A battery surface printing device, characterized in that: include: At least one processor, at least one memory and computer program instructions stored in the memory, when the computer program instructions are executed by the processor, implement the method according to any one of claims 1 to 7.

10. A storage medium having computer program instructions stored thereon, characterized in that: When the computer program instructions are executed by a processor, the method according to any one of claims 1 to 7 is implemented.

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