Code carving device, code carving method and battery device applying code carving method

Abstract

The invention relates to a code carving device, a code carving method and a battery device applying the code carving method, and the code carving device comprises a conveying mechanism which is used for conveying a workpiece; the imaging mechanism is arranged above the conveying mechanism and is used for photographing and positioning the workpiece; the laser code carving mechanism is arranged above the conveying mechanism and is used for carrying out laser code carving on the workpieces; and the processor is in signal connection with the imaging mechanism and adjusts the light emitting angle when the laser code engraving mechanism carries out laser code engraving on the workpiece. The code carving device, the code carving method and the battery device applying the code carving method have the advantage that the code carving position is stable.

Description

Technical Field

[0001] The present application relates to the technical field of battery devices, and in particular to a coding device, a coding method, and a battery device using the coding method. Background Art

[0002] At present, judging from the development of the market situation, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric vehicles, as well as aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding. In the manufacturing process of battery devices, laser engraving is often used to record the corresponding production information. However, in the actual production process, due to structural wear, the position of the engraved code is offset. Summary of the invention

[0003] Based on this, it is necessary to provide a coding device, a coding method and a battery device using the coding method to address the problem of offset of the coding position.

[0004] The first aspect of the present application provides a coding device, comprising: a conveying mechanism for transporting the workpiece; an imaging mechanism, arranged above the conveying mechanism, for photographing and positioning the workpiece; a laser coding mechanism, arranged above the conveying mechanism, for laser coding the workpiece; and a processor, the processor being connected to the imaging mechanism by signal and adjusting the light emission angle of the laser coding mechanism when laser coding the workpiece.

[0005] By integrating the conveying mechanism, imaging mechanism and laser coding mechanism into a system; the processor controls the imaging mechanism to take pictures and locate the workpiece, and adjusts the light output angle of the laser coding mechanism according to the position information; the laser coding mechanism is used to accurately engrave the workpiece. When faults such as loose fixture screws, fixture wear, loose engraving machine screws and position offset occur, the offset of the coding position can be effectively avoided, and the laser coding of the workpiece can be finally completed.

[0006] In one of the embodiments, the laser coding mechanism includes a housing, an X-axis oscillating mirror, an X-axis driver, a Y-axis oscillating mirror, and a Y-axis driver; the X-axis oscillating mirror is rotatably disposed in the housing, and the X-axis oscillating mirror is used to receive laser light; the processor is used to control the X-axis driver to adjust the angle of the X-axis oscillating mirror; the Y-axis oscillating mirror is rotatably disposed in the housing, and the Y-axis oscillating mirror is used to receive laser light after being reflected by the X-axis galvanometer; the processor is used to control the Y-axis driver to adjust the angle of the Y-axis oscillating mirror. By controlling the X-axis oscillating mirror and the Y-axis oscillating mirror to be at different angles through the processor, the light emitting angle of the laser coding mechanism can be adjusted together, thereby laser coding the workpiece; in this way, the laser coding mechanism can accurately code the workpiece, and when there are faults such as loosening of the clamp screws, wear of the clamp, loosening of the coding machine screws, and positional offset, the offset of the coding position can be effectively avoided.

[0007] In one embodiment, the laser coding mechanism includes a first focusing lens group, a reflector, and a second focusing lens group; a light inlet and a light outlet are formed on the housing, the first focusing lens group is arranged at the light inlet, the second focusing lens group is arranged at the light outlet, and the reflector is arranged on the optical path between the X-axis swing mirror and the Y-axis swing mirror; the laser enters from the light inlet and passes through the first focusing lens group, the reflector, the X-axis swing mirror, the reflector, the Y-axis swing mirror, and the second focusing lens group in sequence, and finally emits from the light outlet. In this way, the processor can adjust the light outlet angle of the laser coding mechanism by controlling the X-axis swing mirror and the Y-axis swing mirror to be at different angles, thereby cooperating with the first focusing lens group, the reflector, the reflector, and the second focusing lens group.

[0008] In one embodiment, the coding device includes a gantry support and a mounting seat; the gantry support is arranged across the conveying mechanism, and the gantry support includes a cross bar parallel to the conveying mechanism and arranged at intervals, and two columns connected to the two ends of the cross bar, and the two columns are respectively erected on both sides of the conveying mechanism; the laser coding mechanism is fixed to the cross bar through the mounting seat. In this way, the workpiece will not be interfered by the gantry support and the mounting seat when it is running on the conveying mechanism, and the effective activity space for transporting the workpiece is larger, which is convenient for setting the spacing between the imaging mechanism, the laser coding mechanism and the workpiece.

[0009] In one embodiment, the mounting seat includes a Z-axis adjustment module; the Z-axis adjustment module includes a connecting plate, a slider, a Z-axis linear guide, an adjusting screw, an adapter plate, and a mounting plate; the mounting plate is fixedly connected to the crossbar; the Z-axis linear guide extends in the vertical direction and is arranged on the adapter plate, and the adapter plate is slidably arranged on the mounting plate; the adjusting screw is screwed with the slider to drive the slider to slide back and forth along the Z-axis linear guide; the laser coding mechanism is fixedly connected to the slider. In this way, the thread of the adjusting screw converts the rotation into the reciprocating movement of the slider along the Z-axis linear guide, which can then drive the laser coding mechanism to move up and down in the vertical direction, so that the focal length of the laser coding mechanism can be adjusted to ensure that the laser is concentrated so as to facilitate coding on the workpiece.

[0010] In one embodiment, the mounting seat includes a fixed block and two fixed plates; the two fixed plates are arranged at a relative interval and clamped on both sides of the housing; the ends of the fixed plates are fixedly connected to the slider; the fixed block is arranged on the outer side of one of the fixed plates away from the laser coding mechanism, and the imaging mechanism is fixed on the fixed block. In this way, the laser coding mechanism is fixed on the slider through the fixed plate; the imaging mechanism is fixed on the fixed block, so that it is convenient for the imaging mechanism to take pictures and position the workpiece.

[0011] In one embodiment, the mounting base includes a fixing bracket and an aperture, wherein the fixing bracket is fixedly mounted on the outside of the fixing plate and located below the fixing block, and the aperture is arranged on the fixing bracket to provide lighting for the imaging mechanism. In this way, it is convenient for the imaging mechanism to take photos and position the workpiece, and avoid deviations in the position information provided by the imaging mechanism due to insufficient ambient light.

[0012] In one embodiment, the conveying mechanism includes a conveyor belt, a driver and a plurality of positioning fixtures; the driver drives and connects the conveyor belt, the positioning fixtures are arranged on the conveyor belt at intervals, and the positioning fixtures are used to place the workpiece; the processor controls and connects the driver.

[0013] The second aspect of the present application provides a coding method, which is applied to the above-mentioned coding device, including: placing the workpiece on the conveying mechanism; controlling the conveying mechanism to transport the workpiece to the bottom of the imaging mechanism; controlling the imaging mechanism to take a picture of the workpiece and adjust the light output angle of the laser coding mechanism according to the position information; controlling the laser coding mechanism to emit light to complete the laser coding.

[0014] In one of the embodiments, the step of controlling the imaging mechanism to photograph and locate the workpiece, and adjusting the light output angle of the laser engraving mechanism according to the position information, includes: the imaging mechanism photographs the position information of the adjacent two sides of the workpiece and transmits it to the processor; the processor compares the received position information of the adjacent two sides with the reference position information stored internally, and obtains the deviation data of the workpiece relative to the reference position information in the X and Y directions; the processor transmits the X-direction deviation data to the X-axis driver to adjust the angle of the X-axis swing mirror; the processor transmits the Y-direction deviation data to the Y-axis driver to adjust the angle of the Y-axis swing mirror.

[0015] A third aspect of the present application provides a battery device, including an end cover, wherein the end cover is laser engraved using the above-mentioned engraving method.

[0016] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0018] Figure 2 Schematic diagram of the exploded structure of a battery device provided in some embodiments of the present application.

[0019] Figure 3 A schematic diagram of the structure of a battery module provided in some embodiments of the present application.

[0020] Figure 4 A schematic diagram of the exploded structure of a battery cell provided in some embodiments of the present application.

[0021] Figure 5 A top view of a coding device provided in some embodiments of the present application.

[0022] Figure 6 A three-dimensional view of a coding device provided in some embodiments of the present application.

[0023] Figure 7 A schematic diagram of the structure of a mounting base, a laser engraving mechanism and an imaging mechanism provided in some embodiments of the present application.

[0024] Figure 8 A top view of a mounting base, a laser engraving mechanism, and an imaging mechanism provided in some embodiments of the present application.

[0025] Fig. 9 for Figure 8AA cross-sectional view of the structure shown.

[0026] Fig.10 A flowchart of a coding method provided for some embodiments of the present application.

[0027] Fig.11 Flowcharts of coding methods provided for other embodiments of the present application.

[0028] Description of reference numerals:

[0029] Vehicles - 1000;

[0030] Battery device 100, housing 110, first part 111, second part 112, battery module 120, battery cell 121, end cap 122, housing 123, electrode assembly 124, electrode terminal 125, processor 200, motor 300;

[0031] XX axis direction, YY axis direction, ZZ axis direction;

[0032] Gantry bracket-400, crossbar-410, column-420, mounting seat-500, Z-axis adjustment module-510, connecting plate-511, slider-512, Z-axis linear guide-513, adjusting screw-514, adapter plate-516, convex strip-5161, mounting plate-515, slide groove-5151, fixing block-530, fixing plate-520, fixing bracket-540, aperture-550, conveying mechanism- 600, conveyor belt-610, driver-630, positioning fixture-620, imaging mechanism-700, laser engraving mechanism-800, first focusing lens group-820, reflecting mirror-830, X-axis swing mirror-840, X-axis driver-841, Y-axis swing mirror-850, Y-axis driver-851, housing-860, light inlet-861, light outlet-862, second focusing lens group-870, workpiece-900. DETAILED DESCRIPTION

[0033] The following embodiments of the technical solution of the present application will be described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by technicians in the technical field to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned figure descriptions and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the description of the embodiments of the present application, if the technical terms "first", "second", etc. appear, these terms are only used for descriptive purposes to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0036] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0037] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, indicating that there may be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0038] In the description of the embodiments of the present application, if the term "multiple" appears, "multiple" means at least two (including two), such as two, three, etc., unless otherwise clearly and specifically defined. Similarly, if the term "multiple groups" appears, "multiple groups" refers to more than two groups (including two groups), and if the term "multiple sheets" appears, "multiple sheets" refers to more than two sheets (including two sheets).

[0039] In the description of the embodiments of the present application, if the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. appear, the orientation or position relationship indicated by these terms is based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0040] In the description of the embodiments of the present application, unless otherwise clearly specified and limited, if the technical terms "installed", "connected", "connected", "fixed" and the like appear, these terms should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0041] In the present application, unless otherwise clearly specified and limited, if there is a description that a first feature is "above" or "below" a second feature, etc., or similar descriptions appear, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0042] It should be noted that if an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. If an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. If any, the terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in this application are for illustrative purposes only and do not represent the only implementation method.

[0043] At present, from the perspective of market development, the application of battery devices is becoming more and more extensive. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power and solar power stations, but also widely used in electric vehicles such as electric bicycles, electric motorcycles, electric cars, as well as aerospace and other fields. With the continuous expansion of the application field of battery devices, the market demand is also constantly expanding.

[0044] During the manufacturing process of battery devices, laser engraving is often used to record the corresponding production information. However, in the actual production process, faults such as loose fixture screws, fixture wear, loose engraving machine screws and position offset can cause the position of the engraved code to shift, affecting the quality of the battery device.

[0045] In order to alleviate the problem of code engraving position offset, an imaging mechanism and a laser engraving mechanism can be designed for the engraving device. The light output angle of the laser engraving mechanism can be adjusted according to the position information of the imaging mechanism, so that the laser engraving mechanism can accurately engrave the workpiece. When faults such as loose fixture screws, fixture wear, loose engraving machine screws and position offset occur, the code engraving position offset can be effectively avoided, and the laser engraving of the workpiece can be finally completed.

[0046] The embodiments of the present application provide a coding device, a coding method, and a battery device using the coding method. The battery device is used to provide electrical energy to an electrical device or store electrical energy.

[0047] The electrical device may be, but is not limited to, a mobile phone, a tablet, a laptop, an electric toy, an electric tool, a battery car, an electric car, a ship, a spacecraft, an energy storage product, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, etc. The energy storage product may include an energy storage station, etc.

[0048] For the sake of simplicity, an electrical device in an embodiment of the present application is described by taking a vehicle 1000 as an example.

[0049] Please refer to Figure 1 , Figure 1 A schematic diagram of the structure of a vehicle 1000 provided for some embodiments of the present application. The vehicle 1000 may be a fuel vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 may be provided at the bottom, head or tail of the vehicle 1000. The battery device 100 may be used to power the vehicle 1000, for example, the battery device 100 may be used as an operating power source for the vehicle 1000. The vehicle 1000 may also include a processor 200 and a motor 300, and the processor 200 is used to control the battery device 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0050] In some embodiments of the present application, the battery device 100 can not only serve as an operating power source for the vehicle 1000, but also serve as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0051] Figure 2 An exploded view of a battery device 100 provided in some embodiments of the present application; Figure 3 This is a schematic diagram of the structure of the battery module provided in some embodiments of the present application. Figure 2 and Figure 3 In order to meet different power requirements, the battery device 100 may include a plurality of battery cells 121 and a housing 110. The battery cell 121 refers to the smallest unit constituting the battery module 120 or the battery pack. The plurality of battery cells 121 may be connected in series and / or in parallel via electrode terminals for various applications.

[0052] The box 110 is used to accommodate the battery cell 121 or the battery module 120 to prevent liquid or other foreign matter from affecting the charging or discharging of the battery cell 121. The box 110 can adopt a variety of structures. In some embodiments, the box 110 may include a first part 111 and a second part 112, the first part 111 and the second part 112 cover each other, and the first part 111 and the second part 112 jointly define a storage space for accommodating the battery cell 121. The second part 112 may be a hollow structure with one end open, the first part 111 may be a plate-like structure, the first part 111 covers the open side of the second part 112, so that the first part 111 and the second part 112 jointly define a storage space; the first part 111 and the second part 112 may also be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box 110 formed by the first part 111 and the second part 112 can be in various shapes, such as a simple three-dimensional structure such as a single cuboid, a cylinder, or a sphere, or a complex three-dimensional structure composed of simple three-dimensional structures such as cuboids, cylinders, or spheres, and the embodiments of the present application do not limit this. The material of the box 110 can be an alloy material such as aluminum alloy, iron alloy, etc., or a polymer material such as polycarbonate, polyisocyanurate foam plastic, or a composite material such as glass fiber plus epoxy resin, and the embodiments of the present application do not limit this.

[0053] In the embodiment of the present application, multiple battery cells 121 can directly form a battery pack, or they can first form a battery module 120, and then the battery module 120 can form a battery pack. Specifically, multiple battery cells 121 can be directly connected in series, parallel or mixed together to form a whole, and then the whole formed by multiple battery cells 121 is accommodated in the box 110. Alternatively, multiple battery cells 121 can first be connected in series, parallel or mixed together to form a battery module 120, and then multiple battery modules 120 can be connected in series, parallel or mixed together to form a whole, and then accommodated in the box 110.

[0054] The battery device 100 may further include other structures. For example, the battery device 100 may further include a busbar component for achieving electrical connection between the plurality of battery cells 121 .

[0055] Each battery cell 121 can be a secondary battery device or a primary battery device; it can also be a lithium-sulfur battery device, a sodium-ion battery device or a magnesium-ion battery device, but it is not limited thereto. The battery cell 121 can be cylindrical, flat, rectangular or other shapes. The battery cell 121 is generally divided into three types according to the packaging method: cylindrical battery cells, square battery cells and soft-pack battery cells, and the implementation method of the present application is not limited to this. However, for the sake of simplicity, the following embodiments are all described by taking the square lithium-ion battery cell 121 as an example.

[0056] Please refer to Figure 4 , Figure 4 The schematic diagram of the exploded structure of the battery cell 121 provided in some embodiments of the present application. The battery cell 121 includes an end cap 122, a housing 123, an electrode assembly 124 and other functional components.

[0057] The end cap 122 refers to a component that covers the opening of the shell 123 to isolate the internal environment of the electrode assembly 124 from the external environment. Without limitation, the shape of the end cap 122 can be adapted to the shape of the shell 123 to match the shell 123. Optionally, the end cap 122 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that the end cap 122 is not easily deformed when it is squeezed and collided, so that the battery cell 121 can have a higher structural strength and the safety performance can also be improved. Functional components such as electrode terminals 125 can be provided on the end cap 122. The electrode terminal 125 can be used to electrically connect to the electrode assembly 124 for outputting or inputting electrical energy of the battery cell 121. In some embodiments, the end cap 122 can also be provided with a pressure relief mechanism for releasing the internal pressure when the internal pressure or temperature of the battery cell 121 reaches a threshold. The material of the end cap 122 can also be a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this. In some embodiments, an insulating member may be provided inside the end cap 122 to isolate the electrical connection components in the housing 123 from the end cap 122 to reduce the risk of short circuit. For example, the insulating member may be plastic, rubber, or the like.

[0058] The shell 123 is a component used to cooperate with the end cap 122 to form the internal environment of the battery cell 121, wherein the formed internal environment can be used to accommodate the electrode assembly 124, the electrolyte and other components. The shell 123 and the end cap 122 can be independent components, and an opening can be set on the shell 123, and the internal environment of the battery cell 121 is formed by covering the opening with the end cap 122 at the opening. Without limitation, the end cap 122 and the shell 123 can also be integrated. Specifically, the end cap 122 and the shell 123 can form a common connection surface before other components are put into the shell, and when it is necessary to encapsulate the interior of the shell 123, the end cap 122 covers the shell 123. The shell 123 can be of various shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the shell 123 can be determined according to the specific shape and size of the electrode assembly 124. The shell 123 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0059] The electrode assembly 124 is a component in the battery cell 121 where an electrochemical reaction occurs. One or more electrode assemblies 124 may be contained in the housing 123. The electrode assembly 124 is mainly formed by winding or stacking positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The parts of the positive and negative electrode sheets with active materials constitute the main body of the electrode assembly 124, and the parts of the positive and negative electrode sheets without active materials each constitute a pole ear (not shown). The positive pole ear and the negative pole ear may be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery device, the positive active material and the negative active material react with the electrolyte, and the pole ear connects the electrode terminal 125 to form a current loop.

[0060] It should be understood that in the embodiment of the present application, the end cover 122, the shell 123, and the box body 110 can be used as the workpiece 900 for coding operation, and the specific design shall prevail.

[0061] Figure 5 A top view of a coding device provided in some embodiments of the present application. Figure 6 A three-dimensional view of a coding device provided in some embodiments of the present application.

[0062] The first aspect of the present application provides a coding device for coding a workpiece 900. Figure 5 and Figure 6 As shown, the coding device includes: a conveying mechanism 600, an imaging mechanism 700, a laser coding mechanism 800 and a processor (not shown).

[0063] The conveying mechanism 600 is used to transport the workpiece 900; the imaging mechanism 700 is arranged above the conveying mechanism 600, and is used to photograph and locate the workpiece 900; the laser coding mechanism 800 is arranged above the conveying mechanism 600, and is used to laser code the workpiece 900; the processor is connected to the imaging mechanism 700 signal, and adjusts the light output angle of the laser coding mechanism 800 when laser coding the workpiece 900.

[0064] By integrating the conveying mechanism 600, the imaging mechanism 700 and the laser coding mechanism 800 into a system; after placing the workpiece 900 on the conveying mechanism 600, the processor controls the conveying mechanism 600 to transport the workpiece 900 to the bottom of the imaging mechanism 700. After the workpiece 900 arrives at the position, the processor controls the imaging mechanism 700 to take a photo of the workpiece 900 for positioning, and adjusts the light output angle of the laser coding mechanism 800 according to the position information; the processor controls the laser coding mechanism 800 to emit light. Due to the fine-tuning of the light output angle, the laser coding mechanism 800 can accurately engrave the workpiece 900. When there are faults such as loose fixture screws, fixture wear, loose engraving machine screws and position offset, the engraving position offset can be effectively avoided, and finally the laser engraving of the workpiece 900 is completed.

[0065] The processor is configured to adjust the light emitting angle of the laser coding mechanism 800 based on the position information of the imaging mechanism 700. In the embodiment of the present application, the processor can control the loading and coding of the workpiece 900 and the unloading and transfer by controlling the conveying mechanism 600; specifically, after completing the coding of a workpiece 900, the processor controls the conveying mechanism 600 to transfer the coded workpiece 900 to facilitate the subsequent process. At the same time, the processor controls the conveying mechanism 600 to transfer the uncoded workpiece 900 to the bottom of the imaging mechanism 700, adjust the light emitting angle of the laser coding mechanism 800 after positioning by taking pictures, and perform coding. This cycle is convenient for continuous coding of multiple workpieces 900, thereby improving production efficiency.

[0066] Optionally, the processor may be a PLC processor or a CPU processor.

[0067] Optionally, the imaging mechanism 700 may be a CCD camera.

[0068] Figure 7 A schematic diagram of the structure of a mounting base, a laser engraving mechanism and an imaging mechanism provided in some embodiments of the present application; Figure 8 A top view of a mounting base, a laser coding mechanism, and an imaging mechanism provided in some embodiments of the present application; Fig. 9 for Figure 8 AA cross-sectional view of the structure shown.

[0069] In some possible embodiments, see 5 to Fig. 9As shown, the laser engraving mechanism 800 includes a housing 860 , an X-axis oscillating mirror 840 , an X-axis driver 841 , a Y-axis oscillating mirror 850 and a Y-axis driver 851 .

[0070] Among them, the X-axis oscillating mirror 840 is rotatably arranged in the shell 860, and the X-axis oscillating mirror 840 is used to receive laser; the processor is used to control the X-axis driver 841 to adjust the angle of the X-axis oscillating mirror 840; the Y-axis oscillating mirror 850 is rotatably arranged in the shell 860, and the Y-axis oscillating mirror 850 is used to receive laser reflected by the X-axis galvanometer; the processor is used to control the Y-axis driver 851 to adjust the angle of the Y-axis oscillating mirror 850.

[0071] Among them, the X-axis driver 841 can adjust the angle of the X-axis oscillating mirror 840 based on the signal of the imaging mechanism 700; the Y-axis driver 851 can adjust the angle of the X-axis oscillating mirror 840 based on the signal of the imaging mechanism 700. The X-axis oscillating mirror 840 is used to reflect the laser and control the movement of the laser in the X-axis direction; the Y-axis oscillating mirror 850 is used to reflect the laser and control the movement of the laser in the Y-axis direction. By controlling the X-axis oscillating mirror 840 and the Y-axis oscillating mirror 850 at different angles through the processor, the light output angle of the laser coding mechanism 800 can be adjusted together, and then the laser coding of the workpiece 900 can be performed; in this way, the laser coding mechanism 800 can accurately engrave the workpiece 900, and when there are faults such as loose fixture screws, fixture wear, loosening of the coding machine screws and position offset, the offset of the coding position can be effectively avoided.

[0072] The working principle of the X-axis oscillating mirror and the Y-axis oscillating mirror is based on electromagnetic drive and optical reflection. They are usually made of a flat piece of metal or ceramic material coated with a transparent conductive layer. When the driver applies current to the galvanometer, the generated magnetic field interacts with the conductive layer on the galvanometer, causing the galvanometer to twist or tilt. This movement changes the reflection angle of the laser beam, thereby realizing the scanning of the laser beam on a two-dimensional plane.

[0073] It can be understood that both the X-axis direction and the Y-axis direction are directions in a horizontal plane, and the X-axis direction and the Y-axis direction are usually perpendicular to the vertical direction.

[0074] In some possible embodiments, see 5 to Fig. 9 As shown, the laser engraving mechanism 800 includes a first focusing lens group 820, a reflector 830 and a second focusing lens group 870; a light inlet 861 and a light outlet 862 are respectively formed on the shell 860, the first focusing lens group 820 is arranged at the light inlet 861, the second focusing lens group 870 is arranged at the light outlet 862, and the reflector 830 is arranged on the optical path between the X-axis swing mirror 840 and the Y-axis swing mirror 850.

[0075] The X-axis swing mirror 840 is used to receive the laser focused by the first focusing lens group 820. Fig. 9 , the dotted line in the figure represents the optical path of the laser; specifically, the laser enters from the light inlet 861 and passes through the first focusing lens group 820, the reflector 830, the X-axis swing mirror 840, the reflector 830, the Y-axis swing mirror 850 and the second focusing lens group 870 in sequence, and is finally emitted from the light outlet 862.

[0076] In this way, the processor controls the X-axis swing mirror 840 and the Y-axis swing mirror 850 to be at different angles, and then cooperates with the first focusing lens group 820, the reflector 830, the reflector 830 and the second focusing lens group 870 to adjust the light output angle of the laser engraving mechanism 800, so that the laser engraving mechanism 800 can accurately engrave the workpiece 900, and when faults such as loose fixture screws, fixture wear, loose engraving machine screws and position offset occur, the engraving position offset can be effectively avoided.

[0077] In some possible embodiments, the imaging mechanism 700 is arranged side by side with the light outlet 862. The imaging mechanism 700 captures the position information of the adjacent two sides of the workpiece 900 and transmits it to the processor; the processor compares the received position information of the adjacent two sides with the reference position information stored internally, and obtains the deviation data of the workpiece 900 relative to the reference position information in the X and Y directions; and by adjusting the light output angle from the light outlet 862, the deviation of the engraving position is effectively avoided.

[0078] In some possible embodiments, see Figures 5 to 9 As shown, the coding device includes a gantry bracket 400 and a mounting seat 500; the gantry bracket 400 is straddled on the conveying mechanism 600, and the gantry bracket 400 includes a cross bar 410 parallel to the conveying mechanism 600 and arranged at intervals, and two columns 420 connected to both ends of the cross bar 410, and the two columns 420 are respectively erected on both sides of the conveying mechanism 600; the laser coding mechanism 800 is fixed on the cross bar 410 through the mounting seat 500.

[0079] The cross bar 410 is parallel to the table surface of the conveying mechanism 600 and is set at a distance. When the workpiece 900 is running on the conveying mechanism 600, it will not be interfered by the gantry bracket 400 and the mounting seat 500. The effective activity space for transporting the workpiece 900 is larger, which facilitates the setting of the imaging mechanism 700 and the laser engraving mechanism 800, and finally adjusts their positions with the workpiece 900.

[0080] The mounting seat 500 is movably fixed on the cross bar 410 in the vertical direction; the distance from the laser engraving mechanism 800 to the workpiece 900 can be adjusted. In this way, the focal length of the laser engraving mechanism 800 can be adjusted through the mounting seat 500 to ensure that the laser is concentrated to facilitate engraving on the workpiece 900.

[0081] The laser engraving mechanism 800 is fixed on the crossbar 410 through the mounting seat 500. Usually, bolt connection can be adopted, which has good connection strength and is convenient for disassembly and maintenance.

[0082] In some possible embodiments, see Figures 5 to 9 As shown, the mounting seat 500 includes a Z-axis adjustment module 510; the Z-axis adjustment module 510 includes a connecting plate 511, a slider 512, a Z-axis linear guide 513, an adjusting screw 514, an adapter plate 516 and a mounting plate 515; the mounting plate 515 is fixedly connected to the cross bar 410; the Z-axis linear guide 513 extends in a vertical direction and is arranged on the adapter plate 516, and the adapter plate 516 is arranged on the mounting plate 515; the adjusting screw 514 is screwed with the slider 512 to drive the slider 512 to slide back and forth along the Z-axis linear guide 513; the laser engraving mechanism 800 is fixedly connected to the slider 512.

[0083] The mounting plate 515 is fixedly connected to the cross bar 410 , and the connection method may be bolt connection, which has good connection strength and is convenient for disassembly and maintenance.

[0084] The adapter plate 516 can be slidably set on the mounting plate 515; specifically, a slide groove 5151 extending along the Y-axis direction can be formed on the mounting plate 515, and a convex strip 5161 can be formed on the adapter plate 516, which can be embedded in the slide groove 5151 to prevent the two from disengaging. In this way, the adapter plate 516 can move laterally along the Y-axis direction relative to the mounting plate 515 and adjust its position, thereby adjusting the lateral position of the laser engraving mechanism 800; after being adjusted into place, the adapter plate 516 can be fixed to the mounting plate 515 by bolts.

[0085] The Z-axis linear guide rail 513 extends in the vertical direction and is disposed on the adapter plate 516 , and the laser engraving mechanism 800 is fixedly connected to the slider 512 .

[0086] Since the processor can adjust the light output angle of the laser coding mechanism 800 based on the position information of the imaging mechanism 700, the adjustment of the light output angle has little effect on the focal length of the laser coding mechanism 800 within a certain range. Therefore, after the staff fixes the laser coding mechanism 800 to the slider 512, the adjustment of the light output angle often does not require additional adjustment of the focal length; if the laser spot is scattered, the adjusting screw 514 can be rotated, and the thread of the adjusting screw 514 will convert the rotation into reciprocating movement of the slider 512 along the Z-axis linear guide 513, which can drive the laser coding mechanism 800 to move up and down in the vertical direction, so that the focal length of the laser coding mechanism 800 can be adjusted to ensure that the laser is concentrated to facilitate coding on the workpiece 900.

[0087] It can be understood that the Z-axis direction and the vertical direction are parallel to each other.

[0088] In some possible embodiments, see Figures 5 to 9 As shown, the mounting base 500 includes a fixing block 530 and two fixing plates 520; the two fixing plates 520 are arranged at a relative interval and clamped on both sides of the housing 860; the ends of the fixing plates 520 are fixedly connected to the slider 512. The fixing block 530 is arranged on the outer side of one of the fixing plates 520 away from the laser coding mechanism 800, and the imaging mechanism 700 is fixed on the fixing block 530.

[0089] The fixing plate 520 may be a plate-shaped structure, and the material of the fixing plate 520 may be an alloy material such as aluminum alloy, iron alloy, etc., which is not limited in the embodiments of the present application.

[0090] The two fixed plates 520 are arranged relatively spaced apart along the Y-axis direction, and form an area for accommodating the laser engraving mechanism 800; specifically, the two fixed plates 520 are clamped on both sides of the shell 810 of the laser engraving mechanism 800, and the ends of the fixed plates 520 are fixedly connected to the slider 512, so that the laser engraving mechanism 800 is fixed on the slider 512 through the fixed plates 520.

[0091] When the focal length from the laser engraving mechanism 800 to the workpiece 900 deviates, the laser spot emitted by the laser engraving mechanism 800 is scattered. The staff can rotate the adjusting screw 514, and the thread of the adjusting screw 514 converts the rotation into the reciprocating movement of the slider 512 along the Z-axis linear guide 513. The slider 512 drives the laser engraving mechanism 800 to move up and down in the vertical direction through the fixed plate 520, so as to adjust the focal length of the laser engraving mechanism 800 to ensure that the laser is concentrated, thereby facilitating the engraving on the workpiece 900.

[0092] The fixing block 530 is arranged on the outer side of one of the fixing plates 520 away from the laser coding mechanism 800 , and the imaging mechanism 700 is fixed on the fixing block 530 ; thus, it is convenient for the imaging mechanism 700 to take pictures and position the workpiece 900 .

[0093] In some possible embodiments, the mounting base 500 includes a fixed bracket 540 and an aperture 550 . The fixed bracket 540 is fixed to the outside of the fixed plate 520 and is located below the fixed block 530 . The aperture 550 is arranged on the fixed bracket 540 to provide lighting for the imaging mechanism 700 .

[0094] The fixing bracket 540 may be an L-shaped thin plate structure, and the material of the fixing plate 520 may be an alloy material such as stamped aluminum alloy, stamped iron alloy, etc., and the implementation manner of the present application is not limited to this.

[0095] The aperture 550 can be powered by an external wire or can also be powered by its own energy source, which is subject to the design. In the embodiment of the present application, the aperture 550 can be an LED lamp. The aperture 550 is arranged on the fixed bracket 540 to provide lighting for the imaging mechanism 700, so as to facilitate the imaging mechanism 700 to take pictures and locate the workpiece 900; and to avoid deviations in the position information provided by the imaging mechanism 700 due to insufficient ambient light.

[0096] In some possible embodiments, see Figures 5 to 9 As shown, the conveying mechanism 600 includes a conveyor belt 610, a driver 630 and a plurality of positioning fixtures 620. The driver 630 drives the conveyor belt 610, and the positioning fixtures 620 are arranged on the conveyor belt 610 at intervals. The positioning fixtures 620 are used to place the workpiece 900; the processor controls the connecting driver 630.

[0097] The conveyor belt 610 can be made of high-strength, wear-resistant materials to ensure stable transmission performance under long-term, high-load operation conditions. Its surface can be designed with anti-skid textures to prevent the workpiece 900 from sliding or deflecting during the conveying process.

[0098] A plurality of positioning fixtures 620 are arranged at intervals on the conveyor belt 610 to fix and place the workpiece 900. The positioning fixtures 620 are usually adjusted according to the shape, size and weight of different workpieces 900 to ensure that the workpiece 900 can maintain a stable position and posture during the conveying process. The surface of the positioning fixture 620 may be provided with a buffer layer to reduce friction and damage to the workpiece 900.

[0099] The processor is connected to the driver 630 via a control line. The processor can accurately control the start, stop, acceleration and deceleration of the driver 630 according to a preset program or instruction, thereby achieving accurate control of the motion state of the conveyor belt 610.

[0100] In the embodiment of the present application, the processor can control the driver 630. After completing the engraving of a workpiece 900, the processor controls the driver 630 to start, the conveyor belt 610 runs clockwise, and the positioning fixture 620 transfers the engraved workpiece 900 to facilitate subsequent processes. At the same time, another positioning fixture 620 transports the unengraved workpiece 900 and transfers it to the bottom of the imaging mechanism 700. After positioning by taking pictures, the processor adjusts the light output angle of the laser engraving mechanism 800 and performs coding. This cycle is repeated to achieve continuous coding of multiple workpieces 900 and improve production efficiency.

[0101] A second aspect of the present application provides a code engraving method, which is applied to the above-mentioned code engraving device.

[0102] Fig.10A flowchart of a coding method provided for some embodiments of the present application; Fig.11 Flowcharts of coding methods provided for other embodiments of the present application.

[0103] See also Figures 5 to 11 As shown, the coding methods include:

[0104] S10 . Place the workpiece 900 on the conveying mechanism 600 .

[0105] S20 , controlling the conveying mechanism 600 to transport the workpiece 900 to below the imaging mechanism 700 .

[0106] S30, controlling the imaging mechanism 700 to take a picture of the workpiece 900 for positioning, and adjusting the light output angle of the laser coding mechanism 800 according to the position information.

[0107] S40, controlling the laser coding mechanism 800 to emit light to complete the laser coding.

[0108] In this way, the conveying mechanism 600, the imaging mechanism 700 and the laser engraving mechanism 800 are integrated into a system, so that the laser engraving mechanism 800 can accurately engrave the workpiece 900, and when faults such as loose fixture screws, fixture wear, loose engraving machine screws and position offset occur, the engraving position offset can be effectively avoided.

[0109] In some possible embodiments, see Figures 5 to 11 As shown, the steps of controlling the imaging mechanism 700 to take a picture of the workpiece 900 and adjusting the light output angle of the laser coding mechanism 800 according to the position information include:

[0110] S31 , the imaging mechanism 700 captures position information of two adjacent sides of the workpiece 900 and transmits the information to the processor.

[0111] S32: The processor compares the received position information of the adjacent two sides with the reference position information stored internally, and obtains deviation data of the workpiece 900 relative to the reference position information in the X and Y directions.

[0112] S33, the processor transmits the X-axis deviation data to the X-axis driver 841 to adjust the angle of the X-axis swing mirror 840. S34, the processor transmits the Y-axis deviation data to the Y-axis driver 851 to adjust the angle of the Y-axis swing mirror 850.

[0113] Thus, the X-axis driver 841 is configured to adjust the angle of the X-axis oscillating mirror 840 based on the signal of the imaging mechanism 700; and the Y-axis driver 851 is configured to adjust the angle of the X-axis oscillating mirror 840 based on the signal of the imaging mechanism 700. By controlling the X-axis oscillating mirror 840 and the Y-axis oscillating mirror 850 at different angles through the processor, the light emitting angle of the laser coding mechanism 800 can be adjusted together, and then the laser coding of the workpiece 900 can be performed; thus, the laser coding mechanism 800 can accurately code the workpiece 900, and when there are faults such as loosening of the clamp screws, wear of the clamps, loosening of the coding machine screws and position deviation, the deviation of the coding position can be effectively avoided.

[0114] A third aspect of the present application provides a battery device 100, referring to Figures 1 to 11 As shown, the battery device 100 includes an end cover 122 , and the end cover 122 can be used as a workpiece 900 for laser engraving using the above-mentioned engraving method, thereby effectively avoiding the offset of the engraving position.

[0115] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0116] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A coding device for coding a workpiece (900), characterized in that: include: A conveying mechanism (600) for transporting the workpiece (900); An imaging mechanism (700) is arranged above the conveying mechanism (600) and is used to photograph and position the workpiece (900); A laser coding mechanism (800) is arranged above the conveying mechanism (600) and is used to perform laser coding on the workpiece (900); and a processor, the processor being connected to the imaging mechanism (700) by signal and adjusting the light emission angle when the laser coding mechanism (800) performs laser coding on the workpiece (900).

2. The coding device according to claim 1, characterized in that: The laser coding mechanism (800) comprises a housing (860), an X-axis oscillating mirror (840), an X-axis driver (841), a Y-axis oscillating mirror (850) and a Y-axis driver (851); The X-axis swing mirror (840) is rotatably arranged in the housing (860), and the X-axis swing mirror (840) is used to receive laser light; the processor is used to control the X-axis driver (841) to adjust the angle of the X-axis swing mirror (840); The Y-axis oscillating mirror (850) is rotatably arranged in the housing (860), and the Y-axis oscillating mirror (850) is used to receive laser light reflected by the X-axis galvanometer; the processor is used to control the Y-axis driver (851) to adjust the angle of the Y-axis oscillating mirror (850).

3. The coding device according to claim 2, characterized in that: The laser coding mechanism (800) comprises a first focusing lens group (820), a reflecting mirror (830) and a second focusing lens group (870); A light inlet (861) and a light outlet (862) are respectively formed on the shell (860); the first focusing lens group (820) is arranged at the light inlet (861); the second focusing lens group (870) is arranged at the light outlet (862); and the reflecting mirror (830) is arranged on the optical path between the X-axis oscillating mirror (840) and the Y-axis oscillating mirror (850); The laser enters from the light entrance (861) and passes through the first focusing lens group (820), the reflector (830), the X-axis swing mirror (840), the reflector (830), the Y-axis swing mirror (850) and the second focusing lens group (870) in sequence, and is finally emitted from the light exit (862).

4. The coding device according to claim 2, characterized in that: The coding device comprises a gantry support (400) and a mounting seat (500); The gantry support (400) is straddled on the conveying mechanism (600), the gantry support (400) comprises a crossbar (410) parallel to and spaced from the conveying mechanism (600), and two upright posts (420) connected to both ends of the crossbar (410), the two upright posts (420) being erected on both sides of the conveying mechanism (600) respectively; The laser coding mechanism (800) is fixed on the crossbar (410) via the mounting seat (500).

5. The coding device according to claim 4, characterized in that: The mounting seat (500) comprises a Z-axis adjustment module (510); the Z-axis adjustment module (510) comprises a connecting plate (511), a sliding block (512), a Z-axis linear guide rail (513), an adjusting screw (514), an adapter plate (516) and a mounting plate (515); The mounting plate (515) is fixedly connected to the crossbar (410); the Z-axis linear guide rail (513) extends in a vertical direction and is arranged on the adapter plate (516), and the adapter plate (516) is slidably arranged on the mounting plate (515); the adjusting screw (514) is screwed with the slider (512) to drive the slider (512) to slide back and forth along the Z-axis linear guide rail (513); The laser coding mechanism (800) is fixedly connected to the slider (512).

6. The coding device according to claim 5, characterized in that: The mounting seat (500) comprises a fixing block (530) and two fixing plates (520); The two fixing plates (520) are arranged at a relative interval and clamped on two sides of the housing (860); An end portion of the fixing plate (520) is fixedly connected to the sliding block (512); The fixing block (530) is arranged on the outer side of one of the fixing plates (520) away from the laser coding mechanism (800), and the imaging mechanism (700) is fixed on the fixing block (530).

7. The coding device according to claim 6, characterized in that: The mounting seat (500) comprises a fixing bracket (540) and an aperture (550); the fixing bracket (540) is fixedly arranged on the outside of the fixing plate (520) and is located below the fixing block (530); and the aperture (550) is arranged on the fixing bracket (540) to provide lighting for the imaging mechanism (700).

8. The coding device according to any one of claims 1 to 7, characterized in that: The conveying mechanism (600) comprises a conveying belt (610), a driver (630), and a plurality of positioning fixtures (620); The driver (630) is driven to connect to the conveyor belt (610), the positioning fixtures (620) are arranged on the conveyor belt (610) at intervals, and the positioning fixtures (620) are used to place the workpiece (900); The processor controls connecting the driver (630).

9. A coding method, applied to the coding device according to any one of claims 1 to 8, characterized in that: The coding method comprises: Placing the workpiece (900) on the conveying mechanism (600); controlling the conveying mechanism (600) to transport the workpiece (900) to below the imaging mechanism (700); Controlling the imaging mechanism (700) to take a picture of the workpiece (900) for positioning, and adjusting the light output angle of the laser coding mechanism (800) according to the position information; The laser coding mechanism (800) is controlled to emit light to complete the laser coding.

10. The coding method according to claim 9, characterized in that: The step of controlling the imaging mechanism (700) to photograph and position the workpiece (900), and adjusting the light output angle of the laser coding mechanism (800) according to the position information, comprises: The imaging mechanism (700) captures position information of two adjacent sides of the workpiece (900) and transmits the information to the processor; The processor compares the received position information of the adjacent two sides with the reference position information stored therein to obtain deviation data of the workpiece (900) in the X and Y directions relative to the reference position information; The processor transmits the X-axis deviation data to the X-axis driver (841) to adjust the angle of the X-axis swing mirror (840); The processor transmits the Y-axis deviation data to the Y-axis driver (851) to adjust the angle of the Y-axis swing mirror (850).

11. A battery device, characterized in that: The battery comprises an end cover (122), and the end cover (122) is laser engraved using the engraving method according to claim 9 or 10.

Images