Laser deburring equipment and battery preparation system

Abstract

The embodiment of the utility model provides laser deburring equipment and a battery preparation system. The laser deburring equipment comprises a laser source used for emitting laser; the reflecting mirror group is configured to reflect the laser emitted by the laser source; the field lens is configured to receive the laser reflected by the reflector group and focus the laser; the imaging assembly is configured to collect burr image information; and the control assembly is respectively connected with the imaging assembly and the field lens, and the control assembly is configured to be capable of controlling the field lens to focus a focus on burrs according to burr image information acquired by the imaging assembly.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of laser technology, and more specifically, relate to a laser deburring device and a battery preparation system. Background Art

[0002] In the battery production process, the front-end processes include pulping, coating, rolling, slitting, sheeting, etc. In the slitting process, burrs are easily formed at the cutting point of the battery pole piece. Such burrs are very easy to pierce the diaphragm during the electrode winding process, causing battery short circuit, reducing the battery qualification rate, and even causing serious accidents such as spontaneous combustion and explosion during battery use.

[0003] The existing detection method is to conduct sampling detection through manual observation, manual touch or manual observation under a microscope. This method is characterized by low efficiency, and there is a risk of missed detection due to subjective standards of manual visual inspection and easy fatigue.

[0004] At present, the traditional deburring methods commonly used in industry include: drum grinding, high temperature deburring, mechanical brush deburring, extrusion grinding deburring, magnetic grinding, water jet deburring, etc. The traditional deburring methods are inefficient and poor in precision. They cannot achieve high efficiency, high quality and low cost deburring effects at the same time, and they cannot achieve accurate deburring effects.

[0005] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0006] The purpose of this application is to provide a new technology solution for laser deburring equipment and battery preparation system.

[0007] In a first aspect, the present application provides a laser deburring device. The laser deburring device comprises:

[0008] A laser source, the laser source is used to emit laser light;

[0009] a reflector group, wherein the reflector group is configured to reflect the laser light emitted by the laser source;

[0010] A field lens, the field lens being configured to receive the laser reflected by the reflector group and focus the laser;

[0011] An imaging component, wherein the imaging component is configured to collect burr image information;

[0012] A control component is connected to the imaging component and the field lens respectively, and the control component is configured to control the field lens to focus on the burr according to the burr image information collected by the imaging component.

[0013] Optionally, a beam expander is further included, and the beam expander is located between the laser source and the reflector group.

[0014] Optionally, the reflector group includes a first galvanometer and a second galvanometer, and the first galvanometer and the second galvanometer are respectively connected to the control component;

[0015] The control component is configured to control the rotation of the first galvanometer according to the burr image information collected by the imaging component;

[0016] The control component is configured to control the second galvanometer to rotate according to the burr image information collected by the imaging component; wherein the control component controls the first galvanometer to rotate and controls the second galvanometer to rotate to adjust the position where the laser is incident on the XY plane

[0017] Optionally, the control component includes a host computer and a first control module;

[0018] The imaging component is electrically connected to the host computer, the host computer is electrically connected to the first control module, and the host computer is used to obtain the burr image information collected by the imaging component;

[0019] The first control module is electrically connected to the laser source, and the first control module controls the laser source to emit laser according to the burr image information.

[0020] Optionally, the control component further includes: a second control module, the second control module is electrically connected to the host computer;

[0021] The second control module is electrically connected to the first galvanometer, and the second control module controls the movement of the first galvanometer according to the burr image information;

[0022] The second control module is electrically connected to the second galvanometer, and the second control module controls the movement of the second galvanometer according to the burr image information;

[0023] The second control module is electrically connected to the field mirror, and the second control module controls the field mirror to move along the Z axis according to the burr image information, wherein the Z axis is perpendicular to the XY plane.

[0024] Optionally, the imaging component includes a first imaging module, which is arranged along the X-axis and located on a first side of the field lens, and is used to detect X-axis position information of the burr and Y-axis position information of the burr.

[0025] Optionally, the imaging assembly further includes a second imaging module, which is arranged along the X-axis and located on a second side of the field lens, and the second imaging module is used to obtain image information after deburring.

[0026] Optionally, the axis of the second imaging module is at an angle of 20° to 40° to the axis of the field lens, and / or the axis of the first imaging module is at an angle of 20° to 40° to the axis of the field lens.

[0027] Optionally, the imaging component further includes a third imaging module, the axis of the third imaging module is perpendicular to the plane defined by the X-axis and the Y-axis, and the third imaging module is used to detect Z-axis position information of the burr.

[0028] Optionally, the field lens is an F-Theta field lens.

[0029] In a second aspect, the present application also provides a battery preparation system, wherein the battery preparation system comprises the laser deburring device as described in the first aspect.

[0030] According to an embodiment of the present application, the laser deburring device includes a laser source, a reflector group, a field lens, an imaging component and a control component, wherein the control component is connected to the imaging component and the field lens respectively, and the control component controls the movement of the field lens according to the burr image information collected by the imaging component so that the field lens focuses on the burr. The laser deburring device provided in the embodiment of the present application can adaptively adjust the focus according to the burr image information to achieve accurate removal of the burr.

[0031] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0033] Figure 1 Shown is a schematic diagram of the laser deburring equipment provided in an embodiment of the present application being applied to a pole piece slitting process.

[0034] Figure 2 Shown is a schematic diagram of a laser deburring device provided in an embodiment of the present application.

[0035] Description of reference numerals:

[0036] 101. Unwinding device; 102. Slitting knife group; 103. Rewinding device;

[0037] 1. Laser deburring equipment;

[0038] 10. Pole piece; 11. Laser source; 12. Beam expander; 13. First galvanometer; 14. Second galvanometer; 15. Field lens; 16. Imaging component; 17. Host computer; 18. First control module; 19. Second control module. DETAILED DESCRIPTION

[0039] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0040] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0041] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0042] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0043] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0044] Laser deburring technology refers to the high-power density laser emitted from a laser source, which is focused and irradiated onto the burr surface through the optical path system, causing the burr to reach the melting point or boiling point. At the same time, the high-pressure gas coaxial with the light beam blows away the molten or vaporized metal, thereby achieving the purpose of eliminating the burr.

[0045] However, the application of laser deburring technology in the lithium battery industry is still challenging. For example, when laser deburring technology is applied to the pole piece cutting process, the pole piece moves through a conveyor belt, where the conveyor belt is transmitted along the X-axis, the thickness direction of the conveyor belt is the Z-axis direction, and the conveyor belt plane is the XY plane. The pole piece is in a high-speed motion state in the XY plane, and the pole piece also produces micron or even millimeter-level violent vibrations in the Z direction. Therefore, how to accurately focus the laser spot on the burr and achieve accurate burr removal is a technical problem that needs to be solved urgently.

[0046] Based on how to accurately remove the burrs generated after the pole piece is cut, the first aspect of the embodiment of the present application provides a laser deburring device, wherein the laser deburring device can be applied to the pole piece cutting process, or the laser deburring device can also be applied to other metal cutting fields.

[0047] Reference Figure 1, laser deburring equipment is applied to the pole piece slitting process. For example, the laser deburring equipment is arranged after the pole piece slitting knife group 102 slits the pole piece and before the winding device 103 rewinds the pole piece, wherein the pole piece slitting knife group 102 is located between the unwinding device 101 and the rewinding device 103. After the laser deburring equipment 1 is processed by collimation, deflection, reflection, focusing, etc., it finally focuses on the burrs generated by the pole piece slitting. The burrs can be instantly melted or vaporized by high-energy laser irradiation to achieve accurate removal of the burrs, reduce the error between the laser focus point and the burrs on the edge of the pole piece, improve the burr removal efficiency, and reduce the interference to the pole piece itself.

[0048] Reference Figure 2 The laser deburring device 1 includes: an imaging component 16, a laser source 11, a reflector group, a field lens 15 and a control component.

[0049] The laser source 11 is used to emit laser light; the reflector group is configured to reflect the laser light emitted by the laser source; the field lens 15 is configured to receive the laser light reflected by the reflector group and focus the laser light; the imaging component 16 is configured to collect burr image information; the control component is respectively connected to the imaging component 16 and the field lens 15, and the control component is configured to control the field lens 15 to focus on the burr according to the burr image information collected by the imaging component 16.

[0050] In an embodiment of the present application, the imaging component 16 is used to collect burr image information of the burr. For example, the imaging component 16 can collect burr image information of the burr by taking pictures or the like. The burr image information includes the position information of the burr on the X-axis, the position information of the burr on the Y-axis, and the position information of the burr on the Z-axis. The imaging component 16 collects the position information of the burr on the X-axis, the position information of the burr on the Y-axis, and the position information of the burr on the Z-axis. The control component controls the movement of the field lens 15 according to the burr image information collected by the imaging component 16 to achieve adaptive focusing. For example, the laser deburring system is applied to the process of cutting the pole piece. The pole piece moves through the conveyor belt, and the imaging component 16 collects the burr image information formed after the pole piece is cut, specifically including the position information of the burr on the X-axis, the position information of the Y-axis, and the position information of the Z-axis.

[0051] The field lens 15 is used to receive the laser reflected by the reflector group, and the position of the field lens 15 is adjustable. Specifically, the control component adjusts the movement of the field lens on the Z axis according to the burr image information to achieve adaptive focusing.

[0052] For example, the imaging component 16 detects that the Z-axis position information of a burr is z1. At this time, the control component controls the field lens 15 to move on the Z-axis according to the Z-axis position information z1 of the burr, and moves it to make the focus focused by the field lens 15 focus on the burr. For example, the control component can control the field lens 15 to adjust the field lens 15 to the first position of the Z axis. When the field lens 15 is adjusted to the first position of the Z axis, the laser reflected by the reflector group is projected onto the field lens 15, which changes the position of the laser focus on the Z axis, and the burr at the position is melted or vaporized by the laser, so as to achieve the purpose of accurately removing the burr.

[0053] If the imaging component 16 detects that the Z-axis position information of another burr is z2, the control component controls the field lens 15 to move on the Z-axis according to the Z-axis position information z2 of the burr, and moves it to a point where the focus of the field lens 15 is focused on the burr. For example, the control component can control the field lens 15 to adjust the field lens 15 to the second position of the Z-axis. When the field lens 15 is adjusted to the second position of the Z-axis, the laser reflected by the reflector group is projected onto the field lens 15, which changes the position of the laser focus on the Z-axis, and the burr at the position is melted or gasified by the laser, so as to achieve the purpose of accurately removing the burr.

[0054] It should be noted that when the position of the field lens 15 on the Z axis is determined, no matter how the projection position of the laser on the X axis and the projection position of the Y axis are adjusted, the focal position of the field lens 15 remains consistent, thereby ensuring the consistency of the laser spot size and energy density in the burr area.

[0055] Therefore, in an embodiment of the present application, the laser deburring device includes a laser source, a reflector group, a field lens, an imaging component and a control component, wherein the control component is connected to the imaging component and the field lens respectively, and the control component controls the movement of the field lens according to the burr image information collected by the imaging component so that the field lens focuses on the burr. The laser deburring device provided in the embodiment of the present application can adaptively adjust the focus according to the burr image information to achieve accurate removal of the burr.

[0056] In one embodiment, referring to Figure 2 The laser deburring device further includes a beam expander 12, which is located between the laser source 11 and the reflector group.

[0057] In this embodiment, the beam expander 12 is located in the optical path of the laser emitted by the laser source 11, that is, the beam expander 12 processes the laser emitted by the laser source 11. The beam expander 12 collimates the light beam emitted by the laser, for example, the laser is collimated into a parallel light beam by the beam expander 12, and then the laser is adjusted by the reflector group and the field lens 15 without losing the energy density.

[0058] In a specific embodiment, referring to Figure 2The reflector group includes a first galvanometer 13 and a second galvanometer 14, which are sequentially arranged in the optical path of the laser output laser, and the beam expander 12 is located between the laser source 11 and the first galvanometer 13. Optionally, if the laser output from the laser source 11 satisfies the conditions, the beam expander 12 may not be arranged between the laser source 11 and the first galvanometer 13.

[0059] In one embodiment, referring to Figure 2 , the reflector group includes a first galvanometer 13 and a second galvanometer 14, and the first galvanometer 13 and the second galvanometer 14 are respectively connected to the control component;

[0060] The control component is configured to control the first galvanometer 13 to rotate according to the burr image information collected by the imaging component 16;

[0061] The control component is configured to control the second galvanometer 14 to rotate according to the burr image information collected by the imaging component 16; wherein the control component controls the first galvanometer 13 to rotate and controls the second galvanometer 14 to rotate to adjust the position of the laser incident on the XY plane.

[0062] In this embodiment, the reflector group is also connected to the control component, that is, the control component is respectively connected to the imaging component 16, the field lens 15 and the reflector group. The control component controls the rotation of the reflector group according to the burr image information collected by the imaging component, and the control component controls the movement of the field lens in the Z axis according to the burr image information collected by the imaging component, so as to realize adaptive focusing and achieve the purpose of accurately removing burrs.

[0063] Specifically, the reflector group includes a first galvanometer mirror 13 and a second galvanometer mirror 14 , and the first galvanometer mirror 13 and the second galvanometer mirror 14 are controlled to rotate to adjust the laser transmission direction.

[0064] The first galvanometer 13 is located in the optical path of the laser emitted by the laser source 11 . In an example, the first galvanometer 13 is used to receive the laser emitted by the beam expander 12 .

[0065] In this embodiment, the setting position of the first galvanometer 13 is adjustable, for example, the control component adjusts the rotation of the first galvanometer 13 according to the burr image information.

[0066] For example, the imaging component 16 detects a burr (the burr may be a burr generated when the pole piece 10 is cut) whose X-axis position information is x1. At this time, the control component controls the first galvanometer 13 to rotate according to the X-axis position information x1 of the burr, so that the laser emitted from the beam expander 12 is projected to the first galvanometer 13, thereby changing the projection position of the laser on the X-axis.

[0067] If the imaging component 16 detects that the X-axis position information of another burr is x2, the control component controls the first galvanometer 13 to rotate according to the X-axis position information x2 of the burr, so that the laser emitted from the beam expander 12 is projected to the first galvanometer 13, thereby changing the projection position of the laser on the X-axis.

[0068] For example, the first galvanometer 13 includes a first swing motor and a first reflector. The first swing motor drives the first reflector to deflect. Specifically, the control component drives the first swing motor to move. The first swing motor drives the first reflector to deflect, thereby changing the transmission direction of the laser beam.

[0069] In this embodiment, the second galvanometer mirror 14 is also located in the optical path of the laser emitted by the laser source 11 , and the second galvanometer mirror 14 is used to receive the laser reflected by the first galvanometer mirror 13 .

[0070] The setting position of the second galvanometer 14 is also adjustable. For example, the control component adjusts the rotation of the second galvanometer 14 according to the burr image information.

[0071] For example, the imaging component 16 detects a burr (the burr may be a burr generated when the pole piece 10 is cut) whose Y-axis position information is y1. At this time, the control component controls the second galvanometer 14 to rotate according to the Y-axis position information y1 of the burr, so that the laser reflected by the first galvanometer 13 is projected to the second galvanometer 14, thereby changing the projection position of the laser on the Y-axis.

[0072] If the imaging component 16 detects that the Y-axis position information of another burr is y2, the control component controls the second galvanometer 14 to rotate according to the Y-axis position information y2 of the burr, so that the laser reflected by the first galvanometer 13 is projected to the second galvanometer 14, thereby changing the projection position of the laser on the Y-axis.

[0073] For example, the second galvanometer 14 includes a second swing motor and a second reflector. The second swing electrode drives the second reflector to deflect. Specifically, the control component controls the movement of the second swing motor. The second swing motor drives the second reflector to deflect, thereby changing the transmission direction of the laser beam.

[0074] Therefore, in the embodiment of the present application, the first galvanometer mirror 13 and the second galvanometer mirror 14 are controlled to rotate according to the image phenomenon of the burrs to adjust the projection position of the laser incident on the XY plane.

[0075] In one embodiment, the control component includes a host computer 17 and a first control module 18;

[0076] The imaging component 16 is electrically connected to the host computer 17, and the host computer 17 is electrically connected to the first control module 18, and the host computer 17 is used to obtain the burr image information collected by the imaging component 16;

[0077] The first control module 18 is electrically connected to the laser source 11 , and the first control module 18 controls the laser source 11 to emit laser according to the burr image information.

[0078] In this embodiment, the laser deburring device 1 further comprises a host computer 17 and a first control module 18. The first control module 18 controls the on / off state of the laser source 11, and controls parameters such as the spot diameter and laser power of the laser emitted by the laser source 11.

[0079] For example, the imaging component 16 is a CCD imaging component, the host computer 17 can be a computer that can issue control commands, and the first control module 18 is a laser source control module.

[0080] In one example, a laser deburring device is used in the slitting process of the pole piece 10. The edge of the pole piece 10 is imaged by a CCD imaging component to detect the burr image information of the burr generated when the pole piece 10 is cut. The CCD imaging component is connected to a computer. After the CCD imaging component identifies and detects the burr, the burr image information is transmitted to the computer. After the computer receives the burr image information from the CCD imaging component, the burr image information is analyzed and processed to determine the X-axis position information of the burr, the Y-axis position information of the burr, and the Z-axis position information of the burr. Then the first control module 18 controls the opening and closing of the laser source 11 according to the X-axis position information, the Y-axis position information, and the Z-axis position information of the burr, and controls the parameters such as the spot diameter and power of the laser emitted by the laser source 11 through the first control module 18 according to the burr image information.

[0081] That is to say, under the control of the first control module 18, the laser source 11 can emit laser according to the burr image information. Specifically, the first control module 18 adjusts the spot diameter of the light spot emitted by the laser source 11 and the power of the laser emitted by the laser source 11 according to the X-axis position information, Y-axis position information and Z-axis position information of the burr. For example, in one example, the first control module 18 adjusts the gear position of the laser source 11 according to the X-axis position information, Y-axis position information and Z-axis position information of the burr, and different gear positions correspond to different spot diameters of the laser, and different gear positions correspond to different laser powers.

[0082] In one embodiment, the laser deburring device 1 further includes: a second control module 19, the second control module 19 is electrically connected to the host computer 17;

[0083] The second control module 19 is electrically connected to the first galvanometer 13, and the second control module 19 controls the first galvanometer 13 to rotate according to the burr image information;

[0084] The second control module 19 is electrically connected to the second galvanometer 14, and the second control module 19 controls the second galvanometer 14 to rotate according to the burr image information;

[0085] The second control module 19 is electrically connected to the field lens, and the second control module 19 controls the field lens 15 to move along the Z axis according to the burr image information, wherein the Z axis is perpendicular to the XY plane.

[0086] In this embodiment, the laser deburring device 1 further includes a second control module 19, which controls the first galvanometer 13 to rotate, the second galvanometer 14 to rotate, and the field lens 15 to move in the Z axis.

[0087] In this embodiment, the imaging component 16 is a CCD imaging component, and the host computer 17 can be a computer that can issue control commands. The second control module 19 is a motion control module, and the first galvanometer 13, the second galvanometer 14 and the field lens 15 are all controlled by the motion control module.

[0088] In one example, a laser deburring device is used in the slitting process of the pole piece 10. The edge of the pole piece 10 is imaged by a CCD imaging component to detect the burr image information of the burr generated when the pole piece 10 is slid. The CCD imaging component is connected to a computer. After the CCD imaging component identifies and detects the burr, the burr image information is transmitted to the computer. After the computer receives the burr image information from the CCD imaging component, the burr image information is analyzed and processed to determine the X-axis position information, Y-axis position information and Z-axis position information of the burr. Then the second control module 19 adjusts the rotation of the first galvanometer 13 according to the X-axis position information of the burr; and the second control module 19 adjusts the rotation of the second galvanometer 14 according to the Y-axis position information of the burr; and the second control module 19 adjusts the movement of the field lens 15 on the Z-axis according to the position information of the burr on the Z-axis, so that the focus focused by the field lens 15 is focused on the burr.

[0089] In a specific embodiment, after the first control module 18 controls the laser source 11 to emit laser light, the laser light reaches the first galvanometer 13 after being collimated by the beam expander 12, and the second control module 19 controls the rotation of the first galvanometer 13 and the second galvanometer 14, and adjusts the projection position of the laser beam in the XY plane. The laser beam reaches the field lens 15 through the second galvanometer 14, and the second control module 19 controls the field lens 15 to move on the Z axis, and focuses on the position of the burr through the field lens 15, so as to realize adaptive focusing to accurately remove the burr.

[0090] In one embodiment, the imaging component 16 includes a first imaging module, which is arranged along the X-axis and located on the first side of the field lens 15, and the first imaging module is used to detect the position information of the burr on the X-axis and the position information of the burr on the Y-axis.

[0091] In this embodiment, the imaging component 16 includes a first imaging module, and the first imaging module is a first visual system. For example, the imaging component 16 is a CCD imaging component. The first visual system is also a first imaging module.

[0092] The first imaging module is arranged along the X-axis and located at the first side of the field lens 15. For example, the first imaging module is located at the front side of the field lens 15 along the X-axis (the high-speed movement direction of the pole piece 10). The first imaging module is responsible for detecting and identifying burrs to determine the burr image information of the burrs generated when the pole piece 10 is cut. Specifically, the X-axis position information of the burrs and the Y-axis position information of the burrs are detected by the first imaging module.

[0093] Optionally, the lens recognition accuracy in the first imaging module can reach 10 μm, with a range of 20 mm*30 mm.

[0094] In one embodiment, referring to Figure 2 The imaging component 16 also includes a second imaging module, which is arranged along the X-axis and located on the second side of the field lens 15, and the second imaging module is used to obtain image information after deburring.

[0095] In this embodiment, the imaging component 16 includes a second imaging module, and the second imaging module is a second visual system. For example, the imaging component 16 is a CCD imaging component, and the second visual system is also a CCD imaging component. Therefore, in this embodiment, the imaging component 16 includes two sets of imaging modules.

[0096] The second imaging module is arranged along the X-axis and is located at the second side of the field lens 15. For example, the second imaging module is located at the rear side of the field lens 15 along the X-axis (the direction of high-speed movement of the pole piece 10). The second imaging module is responsible for visual imaging and inspection after deburring. Optionally, the lens recognition accuracy in the second imaging module can reach 10μm, with a range of 20mm*30mm.

[0097] In one embodiment, the axis of the second imaging module is at an angle of 20° to 40° to the axis of the field lens 15 , and / or, in one embodiment, the axis of the first imaging module is at an angle of 20° to 40° to the axis of the field lens 15 .

[0098] In this embodiment, preferably, the axis of the first imaging module is 30° to the axis of the field lens 15. The angle between the axis of the first imaging module (the axis of the lens in the first imaging module) and the axis of the field lens 15 is limited so that the first imaging module can accurately detect the X-axis position information of the burr and the Y-axis position information of the burr.

[0099] Preferably, the axis of the second imaging module is 30° to the axis of the field lens 15. In addition, the angle between the axis of the first imaging module and the axis of the field lens 15 may be consistent with or inconsistent with the angle between the axis of the second imaging module and the axis of the field lens 15.

[0100] In this embodiment, the angle between the axis of the second imaging module (the axis of the lens in the second imaging module) and the axis of the field lens 15 is limited, so that the second imaging module can detect the deburring effect.

[0101] In one embodiment, referring to Figure 2 The imaging component 16 also includes a third imaging module, the axis of the third imaging module is perpendicular to the plane defined by the X-axis and the Y-axis, and the third imaging module is used to detect the position information of the burr on the Z-axis.

[0102] In this embodiment, the imaging component 16 also includes a third imaging module, and the third imaging module is a third visual system. For example, if the imaging component 16 is a CCD imaging component, the third visual system is also a CCD imaging component. Therefore, in this embodiment, the imaging component 16 includes three sets of imaging modules.

[0103] The axis of the third imaging module (the axis of the lens in the third imaging module) is perpendicular to the plane defined by the X-axis and the Y-axis (when the pole piece is transmitted through the conveyor belt, the plane defined by the X-axis and the Y-axis is the plane where the conveyor belt is located), and the lens of the third imaging module faces the plane where the pole piece 10 is located. The third imaging module is responsible for the detection and identification of burrs to determine the burr image information of the burrs generated when the pole piece 10 is cut. Specifically, the Z-axis position information of the burr is detected by the third imaging module, so the position information of the burr in three directions can be detected by the first imaging module and the third imaging module to achieve accurate positioning of the burr.

[0104] Optionally, the lens recognition accuracy in the third imaging module can reach 10μm, with a range of 20mm*30mm.

[0105] In one embodiment, the field lens 15 is an F-Theta field lens.

[0106] In this embodiment, compared with conventional lenses, after the F-Theta field lens receives the laser beam, as long as its position on the Z axis remains unchanged, the height of the focus point remains unchanged. Therefore, by controlling the setting position of the field lens 15 on the Z axis through the second control module 19, the burrs of different heights can be focused, so as to remove the burrs of different heights.

[0107] In a specific embodiment, the parameters of the laser source 11 are: wavelength 355nm, power 500W, line width less than 25μm. The parameters of the first galvanometer 13 and the second galvanometer 14 are: reflection wavelength 355nm, maximum incident light spot diameter 15mm, scanning angle 0.25rad-0.4rad, repeated positioning accuracy less than 20u rad, 8-hour working drift less than 0.3m rad, marking speed 2m / s, positioning speed 10m / s.

[0108] In this embodiment, the laser deburring device is applied to the slitting process of the pole piece 10. The burr image information of the burr of the pole piece 10 is detected by the first imaging module and the third imaging module. In one example, the first imaging module and the third imaging module can transmit the detected burr image to the host computer 17, and the host computer 17 processes and analyzes the burr image information to determine the X-axis position information, Y-axis position information and Z-axis position information of the burr. The host computer 17 controls the first control module 18 to turn on the laser source 11 based on the burr image information obtained. And the host computer 17 controls the second control module 19 to rotate the first galvanometer 13 and the second galvanometer 14 based on the burr image information obtained, and controls the third control module to control the field lens 15 to move on the Z axis, so that the focus focused by the field lens 15 is focused on the burr.

[0109] The laser source 11 emits a laser, which is converted into a parallel laser beam by the beam expander 12. The parallel laser beam is reflected by the first galvanometer 13 and the second galvanometer 14 and is projected onto the F-Theta field lens 15. The F-Theta field lens 15 focuses the laser beam to achieve precise overlap of the focus and the burr, and the burr is instantly vaporized and eliminated by the laser spot.

[0110] The second imaging module detects the effect of burr removal on the electrode sheet 10. For example, the second imaging module obtains image information after the burr is removed, and transmits the burr image after the burr is removed to the host computer 17. The host computer 17 compares and verifies the images before and after the burr is removed. In this embodiment, the electrode sheet 10 has neat edges after the burr is removed, without residual burrs or texture marks, and the electrode sheet 10 does not have deformation, wrinkles, warping, etc.

[0111] According to the second aspect of the embodiment of the present application, a battery preparation system is also provided. The battery preparation system includes the laser deburring device 1 as described in the first aspect. The laser deburring device 1 is applied to the battery preparation system, and can accurately remove the burrs on the edge of the pole piece 10 without affecting the quality of the pole piece 10.

[0112] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0113] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A laser deburring device, characterized in that: The laser deburring device (1) comprises: A laser source (11), the laser source (11) being used to emit laser light; a reflector group, wherein the reflector group is configured to reflect the laser light emitted by the laser source; A field lens (15), the field lens (15) being configured to receive the laser light reflected by the reflector group and focus the laser light; An imaging component (16), wherein the imaging component (16) is configured to collect burr image information; A control component is connected to the imaging component (16) and the field lens (15) respectively, and the control component is configured to control the field lens (15) to focus on the burr according to the burr image information collected by the imaging component (16).

2. The laser deburring equipment according to claim 1, characterized in that: It also comprises a beam expander (12), wherein the beam expander (12) is located between the laser source (11) and the reflector group.

3. The laser deburring equipment according to claim 1, characterized in that: The reflector group comprises a first galvanometer mirror (13) and a second galvanometer mirror (14), wherein the first galvanometer mirror (13) and the second galvanometer mirror (14) are respectively connected to the control component; The control component is configured to control the rotation of the first galvanometer (13) according to the burr image information collected by the imaging component (16); The control component is configured to control the second galvanometer (14) to rotate according to the burr image information collected by the imaging component (16); wherein the control component controls the first galvanometer (13) to rotate and controls the second galvanometer (14) to rotate to adjust the position of the laser incident on the XY plane.

4. The laser deburring device according to claim 3, characterized in that: The control component comprises a host computer (17) and a first control module (18); The imaging component (16) is electrically connected to the host computer (17), the host computer (17) is electrically connected to the first control module (18), and the host computer (17) is used to obtain the burr image information collected by the imaging component (16); The first control module (18) is electrically connected to the laser source (11), and the first control module (18) controls the laser source (11) to emit laser light according to the burr image information.

5. The laser deburring device according to claim 4, characterized in that: The control component further comprises: a second control module (19), the second control module (19) being electrically connected to the host computer (17); The second control module (19) is electrically connected to the first galvanometer (13), and the second control module (19) controls the first galvanometer (13) to rotate according to the burr image information; The second control module (19) is electrically connected to the second galvanometer (14), and the second control module (19) controls the second galvanometer (14) to rotate according to the burr image information; The second control module (19) is electrically connected to the field lens (15), and the second control module (19) controls the field lens (15) to move along a Z axis according to the burr image information, wherein the Z axis is perpendicular to the XY plane.

6. The laser deburring equipment according to claim 1, characterized in that: The imaging component (16) comprises a first imaging module, the first imaging module is arranged along the X-axis and located on the first side of the field lens (15), and the first imaging module is used to detect X-axis position information and Y-axis position information of the burr.

7. The laser deburring device according to claim 6, characterized in that: The imaging component (16) further comprises a second imaging module, the second imaging module is arranged along the X-axis and is located on the second side of the field lens (15), and the second imaging module is used to obtain image information after deburring.

8. The laser deburring device according to claim 7, characterized in that: The axis of the second imaging module is at an angle of 20° to 40° to the axis of the field lens (15), and / or the axis of the first imaging module is at an angle of 20° to 40° to the axis of the field lens (15).

9. The laser deburring device according to claim 6, characterized in that: The imaging component (16) further comprises a third imaging module, the axis of which is perpendicular to the plane defined by the X-axis and the Y-axis, and the third imaging module is used to detect Z-axis position information of the burr.

10. The laser deburring equipment according to claim 1, characterized in that: The field lens (15) is an F-Theta field lens.

11. A battery preparation system, characterized in that: The battery preparation system comprises the laser deburring device as described in any one of claims 1-10.

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