Lithium battery tab laser cutting system

Abstract

The invention relates to a lithium battery pole lug laser cutting system which comprises a conveying mechanism, a laser cutting mechanism and a laser cutting mechanism. The laser emitting device is arranged on the side portion of the pole piece material belt and used for emitting laser to the pole piece material belt along a preset track to cut out the pole lug, the laser emitting device is installed on the displacement adjusting mechanism, the displacement adjusting mechanism is used for flexibly adjusting the position of the laser emitting device in a three-dimensional space, and the pole lug cutting device is simple in structure and convenient to operate. According to the lithium battery pole lug cutting device, accurate adjustment of the laser emitting device in the front-back axial position, the left-right axial position and the pitching axial position can be achieved, it is ensured that laser beams output by the laser emitting device perpendicularly enter a pole lug cutting area and are accurately focused on a cutting point, the flatness and edge quality of the pole lug cutting face are greatly improved, and efficient and accurate cutting forming of a lithium battery pole lug is achieved.

Description

Technical Field

[0001] The invention relates to a battery tab cutting technology, and in particular to a lithium battery tab laser cutting system. Background Art

[0002] In the precision manufacturing process of lithium battery tabs, high-energy laser cutting technology has become an indispensable tool in the industry with its excellent cutting accuracy, fast processing speed and wide material applicability. To achieve fast and high-quality cutting of tab materials, a crucial and often overlooked prerequisite is to ensure that the laser beam can accurately and accurately be incident vertically on the cutting surface of the tab. This is because only when the laser beam is perpendicular to the cutting surface can the best energy transmission efficiency be achieved, thereby ensuring the flatness and edge quality of the cutting surface.

[0003] However, in an actual production environment, as the production equipment continues to operate, the position of the laser emitter is often disturbed by a variety of external factors, such as slight vibrations of the equipment itself, changes in ambient temperature, and air flow. These factors may cause the laser emitter to deviate slightly from the ideal position. Although these deviations may seem insignificant, they are enough to affect the cutting effect for laser cutting operations that pursue extreme precision, resulting in uneven cutting surfaces, increased edge burrs, and other problems, which in turn affects the overall performance of the lithium battery.

[0004] In view of this, there is an urgent need in the art for a device that can flexibly adjust the position of a laser emitter to ensure that the laser beam emitted by it can always maintain a vertical incident state, and the light spot can be accurately focused on the cutting surface of the tab to achieve the best cutting effect. Summary of the invention

[0005] Based on this, in order to solve the above problems, the present invention provides a lithium battery tab laser cutting system, which can realize the precise adjustment of the laser emitting device in the three axial positions of front and back, left and right, and pitch, thereby improving the accuracy and efficiency of lithium battery tab cutting.

[0006] To achieve the above-mentioned purpose, the present invention provides a lithium battery tab laser cutting system, comprising: a transmission mechanism for transmitting a pole piece strip; a laser emitting device, arranged on the side of the pole piece strip, for emitting a laser to the pole piece strip along a preset trajectory to cut out the tab, the laser emitting device being installed on a displacement adjustment mechanism, the displacement adjustment mechanism comprising a support column, a mounting plate, a horizontal displacement adjustment plate, a horizontal rotation adjustment plate and a vertical rotation adjustment plate, the laser emitting device being installed on the top of the support column; the horizontal displacement adjustment plate being slidably connected to the mounting plate, the bottom surface of the horizontal displacement adjustment plate being provided with at least 2 groups of connecting blocks, the top surface of the mounting plate being provided with at least 2 slide rails, the connecting blocks being matched and installed with the slide rails, the top surface of the horizontal displacement adjustment plate being provided with a push-pull mechanism; the vertical rotation adjustment plate being installed on the support column through a first rotation axis; the bottom of the horizontal rotation adjustment plate being installed on the top surface of the horizontal displacement adjustment plate through a second rotation axis, and the first side of the horizontal rotation adjustment plate being connected to the vertical rotation adjustment plate.

[0007] In one embodiment, the side of the vertical rotation adjustment plate is also provided with a first panel for installing the first telescopic adjustment member and the second telescopic adjustment member, and the first panel is provided with at least two through holes, and the first telescopic adjustment member and the second telescopic adjustment member respectively pass through the through holes and abut against the support column.

[0008] In one of the embodiments, the second side portion of the horizontal rotation adjustment plate is also provided with a second panel for installing a third telescopic adjustment member and a fourth telescopic adjustment member, and the second panel is provided with at least two through holes, and the third telescopic adjustment member and the fourth telescopic adjustment member respectively pass through the through holes and abut against the horizontal rotation adjustment plate.

[0009] In one of the embodiments, at least two limit positioning through holes are arranged on the vertical rotation adjustment plate, and the limit positioning through holes are arc-shaped; at least two limit positioning through holes are arranged on the horizontal rotation adjustment plate, and the limit positioning through holes are arc-shaped.

[0010] In one embodiment, the first telescopic adjustment member and the second telescopic adjustment member are screws.

[0011] In one embodiment, the third telescopic adjustment member and the fourth telescopic adjustment member are screws.

[0012] In one embodiment, the vertical rotation adjustment plate and the horizontal rotation adjustment plate are L-shaped, and a reinforcing rib is provided between the two.

[0013] In one of the embodiments, a digital caliper with an accuracy of 0.01 mm is disposed on the side of the mounting plate, and a displacement block of the digital caliper is connected to the horizontal displacement adjustment plate.

[0014] In one of the embodiments, the push-pull mechanism is connected with an adjusting screw.

[0015] In one of the embodiments, two groups of tab pressing mechanisms are further provided at the rear end of the laser-cut tab. The tab pressing mechanisms are arranged above the tab transmission mechanism and correspond to the positions of the tabs respectively. Each group of tab pressing mechanisms includes a cylinder and a pressing wheel. The cylinder pushes the pressing wheel down to contact the tab to form ribs on the tab. The tab pressing mechanism is installed on a support arm. The support arm is also provided with a guide rail. The tab pressing mechanism can move along the guide rail.

[0016] Compared with the prior art, the present invention has the following beneficial effects: A lithium battery tab laser cutting system provided by the present invention has a simple structure and can realize precise adjustment of the laser emitting device in three axial positions of front and back, left and right, and pitch, ensuring that the laser beam output by the laser emitting device vertically enters the tab cutting area and is precisely focused on the cutting point, greatly improving the flatness and edge quality of the tab cutting surface, thereby realizing efficient and precise cutting and forming of the lithium battery tab. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of a lithium battery tab laser cutting system of the present invention.

[0018] Figure 2 The figure is a schematic diagram of the three-dimensional structure of a lithium battery tab laser cutting system of the present invention.

[0019] Figure 3 The present invention is a schematic structural diagram of a support column, a horizontal rotation adjustment plate and a vertical rotation adjustment plate in a lithium battery tab laser cutting system.

[0020] Figure 4 The present invention is a schematic structural diagram of a tab pressing mechanism in a lithium battery tab laser cutting system. DETAILED DESCRIPTION

[0021] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0022] In the description of the present invention, it is to be understood that 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., indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral 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, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a 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. A first feature being "below", "below" or "below" a 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.

[0026] It should be noted that when 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. When 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. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] like Figure 1-3As shown, this embodiment provides a lithium battery tab laser cutting system, including: a transmission mechanism (not shown in the figure), usually the transmission mechanism is a transmission roller or a belt, which is used to transmit the pole piece strip 10; a laser emitting device 20, which is arranged on the side of the pole piece strip 10, and is used to emit high-energy laser to the pole piece strip 10 along a preset trajectory to achieve fine cutting of the lithium battery tab, and the laser emitting device 20 is installed on a displacement adjustment mechanism, and the displacement adjustment mechanism is used to flexibly adjust the position of the laser emitting device 20 in three-dimensional space, specifically: the relative distance between the laser emitting device 20 and the pole piece strip 10, the pitch incident angle and the horizontal incident angle can be adjusted degree, ensuring that the laser beam 201 emitted from the field mirror of the laser emitting device 20 is perpendicular to the cutting surface of the pole piece strip 10, the displacement adjustment mechanism includes a support column 301, a mounting plate 302, a horizontal displacement adjustment plate 303, a horizontal rotation adjustment plate 304 and a vertical rotation adjustment plate 305, the laser emitting device 20 is installed on the top of the support column 301; the horizontal displacement adjustment plate 303 is slidably connected to the mounting plate 302, and the bottom surface of the horizontal displacement adjustment plate 303 is provided with at least 2 groups of connecting blocks 3031, each group includes at least 2 connecting blocks 3031, and at least 2 groups of connecting blocks are respectively arranged on both sides of the horizontal displacement adjustment plate 303, At least two slide rails 3021 are arranged on both sides of the top surface of the mounting plate 302, the connecting block 3031 is matched with the slide rails 3021, and the top surface of the horizontal displacement adjustment plate 303 is provided with a push-pull mechanism 3032. By pushing the push-pull mechanism 3032 manually or automatically, the relative distance between the laser emitting device 20 and the pole piece strip 10 can be adjusted, so that the focus of the laser beam 201 output by the laser emitting device 20 is aligned with the pole ear cutting area; the vertical rotation adjustment plate 305 is installed on the support column 301 through the first rotation axis 3051, and the support column 301 can drive the laser emitting device 20 to rotate around the first rotation axis, thereby changing The pitch incident angle of the laser emitting device 20 is changed, so that the laser beam 201 output by the laser emitting device 20 is vertically incident on the tab cutting area; the bottom of the horizontal rotation adjustment plate 304 is installed on the top surface of the horizontal displacement adjustment plate 303 through the second rotation axis 3041, and the first side of the horizontal rotation adjustment plate 304 is connected to the vertical rotation adjustment plate 305. The position of the horizontal rotation adjustment plate 304 is adjusted, so that the vertical rotation adjustment plate 305 drives the support column 301 and the laser emitting device 20 to rotate in the left and right directions around the second rotation axis 3041, so that the laser beam 201 output by the laser emitting device 20 is vertically incident on the tab cutting area. A lithium battery tab laser cutting system provided in this embodiment has a simple structure, and can realize the precise adjustment of the laser emitting device in the three axial positions of front and back, left and right, and pitch, ensuring that the laser beam output by the laser emitting device is vertically incident on the tab cutting area and accurately focused on the cutting point, greatly improving the flatness and edge quality of the tab cutting surface, and realizing efficient and precise cutting and forming of the lithium battery tab.

[0029] In one embodiment, the side of the vertical rotation adjustment plate 305 is also provided with a first panel 3054 for installing a first telescopic adjustment member 3052 and a second telescopic adjustment member 3053, and the vertical rotation adjustment plate 305 and the first panel 3054 form a horizontal L-shape, and the first panel 3054 is provided with at least two through holes, and the first telescopic adjustment member 3052 and the second telescopic adjustment member 3053 respectively pass through the through holes and abut against the support column 301. The distance that the first telescopic adjustment member 3052 extends into the first panel 3054 is extended and / or the distance that the second telescopic adjustment member 3053 extends into the first panel 3054 is shortened. Under the driving action of the first telescopic adjustment member 3052 and / or the second telescopic adjustment member 3053, the support column 301 drives the laser emitting device 20 to rotate counterclockwise around the first rotation axis 3051 in the vertical reverse direction (pitch direction), thereby changing the pitch angle of the laser beam 201 incident on the tab cutting area; the distance that the second telescopic adjustment member 3053 extends into the first panel 3054 is extended and / or the distance that the first telescopic adjustment member 3052 extends into the first panel 3054 is shortened. Under the driving action of the second telescopic adjustment member 3053 and / or the first telescopic adjustment member 3052, the support column 301 drives the laser emitting device 20 to rotate clockwise around the first rotation axis 3051 in the vertical reverse direction (pitch direction), thereby changing the pitch angle of the laser beam 201 incident on the tab cutting area. Exemplarily, the first telescopic adjustment member 3052 and the second telescopic adjustment member 3053 are screws.

[0030] In one embodiment, the second side portion of the horizontal rotation adjustment plate 304 is further provided with a second panel 3044 for mounting the third telescopic adjustment member 3042 and the fourth telescopic adjustment member 3043, a certain spacing distance is set between the second panel 3045 and the horizontal rotation adjustment plate 304, the second panel 3044 is provided with at least two through holes, and the third telescopic adjustment member 3042 and the fourth telescopic adjustment member 3043 respectively pass through the through holes and abut against the horizontal rotation adjustment plate 304. By extending the distance that the third telescopic adjustment member 3042 extends into the second panel 3044 and / or shortening the distance that the fourth telescopic adjustment member 3043 extends into the second panel 3044, the horizontal rotation adjustment plate 304 can drive the vertical rotation adjustment plate 305, the support column 301 and the laser emitting device 20 to rotate clockwise in the left-right direction (horizontal direction) around the second rotation axis 3041 under the driving action of the third telescopic adjustment member 3042 and / or the fourth telescopic adjustment member 3043, thereby changing the horizontal angle at which the laser beam 201 is incident on the tab cutting area; similarly, by extending the distance that the fourth telescopic adjustment member 3043 extends into the second panel 3044 and / or shortening the distance that the third telescopic adjustment member 3042 extends into the second panel 3044, the laser emitting device 20 can rotate counterclockwise in the left-right direction (horizontal direction) around the second rotation axis 3041. Exemplarily, the third telescopic adjustment member 3042 and the fourth telescopic adjustment member 3043 are screws.

[0031] In one embodiment, at least two limit positioning through holes 306 are provided on the vertical rotation adjustment plate 305, and the limit positioning through holes are arc-shaped; at least two limit positioning through holes 306 are provided on the horizontal rotation adjustment plate 304, and the limit positioning through holes 306 are arc-shaped, so that the displacement of the entire device and the laser emitting device 20 is carried out within a certain range, and the limit positioning through holes 306 can be connected and fixed to the vertical rotation adjustment plate 305 and / or the horizontal rotation adjustment plate 304 by screws, and the angle of the vertical rotation adjustment plate 305 and / or the horizontal rotation adjustment plate 304 can be adjusted by loosening the screws.

[0032] In one embodiment, the vertical rotation adjustment plate 305 and the horizontal rotation adjustment plate 304 are L-shaped, and a reinforcing rib is disposed between the two, and the second rotation axis 3041 is disposed in the reinforcing rib.

[0033] In one embodiment, a digital caliper 307 with an accuracy of 0.01 mm is provided on the side of the mounting plate 302, and a displacement block 3071 of the digital caliper 307 is connected to the horizontal displacement adjustment plate 304, so that the distance moved by the laser emitting device 20 along the slide rail 3021 can be displayed.

[0034] In one of the embodiments, the push-pull mechanism 3032 is connected to an adjusting screw 3033, and the moving distance of the laser emitting device 20 can be precisely controlled by adjusting the screw 3033.

[0035] like Figure 4 As shown, in one embodiment, two sets of tab pressing mechanisms 40 are further provided at the rear end of the laser cutting tab. The tab pressing mechanisms 40 are provided above the tab transmission mechanism 401 and correspond to the positions of the tabs respectively. Each set of tab pressing mechanisms 40 includes a cylinder 402 and a pressing wheel 403. The cylinder 402 pushes the pressing wheel 403 downward to contact the tab, forming ribs on the tab. The thrust of the cylinder 402 can be adjusted by a pressure regulating valve 60. The tab pressing mechanism 40 is installed on a support arm 50. The support arm 50 is also provided with a guide rail 501. The tab pressing mechanism 40 can move along the guide rail 501. The position of the tab pressing mechanism 40 can be adjusted by a hand wheel 70. The formation of ribs on the tab can increase the strength of the tab and make it difficult for the tab to be folded, bent or deformed after forming.

[0036] It should be noted that it is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention, and any figure mark in the claims should not be regarded as limiting the claims involved.

[0037] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method and core ideas of the present invention. At the same time, for those skilled in the art, according to the ideas of the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A lithium battery tab laser cutting system, include: The transmission mechanism is used to transmit the pole piece material strip; the laser emitting device is arranged on the side of the pole piece material strip, and is used to emit laser to the pole piece material strip along a preset trajectory to cut out the pole ear, which is characterized by: The laser emitting device is installed on the displacement adjustment mechanism, which includes a support column, a mounting plate, a horizontal displacement adjustment plate, a horizontal rotation adjustment plate and a vertical rotation adjustment plate, and the laser emitting device is installed on the top of the support column; The horizontal displacement adjustment plate is slidably connected to the mounting plate, the bottom surface of the horizontal displacement adjustment plate is provided with at least two groups of connection blocks, the top surface of the mounting plate is provided with at least two slide rails, the connection blocks are matched and installed with the slide rails, and the top surface of the horizontal displacement adjustment plate is provided with a push-pull mechanism; The vertical rotation adjustment plate is mounted on the support column via a first rotation axis; The bottom of the horizontal rotation adjustment plate is installed on the top surface of the horizontal displacement adjustment plate through a second rotation axis, and the first side portion of the horizontal rotation adjustment plate is connected to the vertical rotation adjustment plate.

2. A lithium battery tab laser cutting system according to claim 1, Features: The side of the vertical rotation adjustment plate is also provided with a first panel for installing the first telescopic adjustment member and the second telescopic adjustment member. The first panel is provided with at least two through holes. The first telescopic adjustment member and the second telescopic adjustment member respectively pass through the through holes and abut against the support column.

3. A lithium battery tab laser cutting system according to claim 1, Features: The second side of the horizontal rotation adjustment plate is also provided with a second panel for installing the third telescopic adjustment member and the fourth telescopic adjustment member. The second panel is provided with at least two through holes. The third telescopic adjustment member and the fourth telescopic adjustment member respectively pass through the through holes and abut against the horizontal rotation adjustment plate.

4. A lithium battery tab laser cutting system according to claim 1, Features: At least two limit positioning through holes are arranged on the vertical rotation adjustment plate, and the limit positioning through holes are in an arc shape; at least two limit positioning through holes are arranged on the horizontal rotation adjustment plate, and the limit positioning through holes are in an arc shape.

5. A lithium battery tab laser cutting system according to claim 2, Features: The first telescopic adjustment member and the second telescopic adjustment member are screws.

6. A lithium battery tab laser cutting system according to claim 3, Features: The third telescopic adjustment member and the fourth telescopic adjustment member are screws.

7. A lithium battery tab laser cutting system according to claim 1, Features: The vertical rotation adjustment plate and the horizontal rotation adjustment plate are L-shaped, and a reinforcing rib is arranged between the two.

8. A lithium battery tab laser cutting system according to claim 1, Features: A digital caliper with an accuracy of 0.01 mm is arranged on the side of the mounting plate, and a displacement block of the digital caliper is connected to the horizontal displacement adjustment plate.

9. A lithium battery tab laser cutting system according to claim 1, Features: The push-pull mechanism is connected with an adjusting screw.

10. A lithium battery tab laser cutting system according to claim 1, Features: Two sets of tab pressing mechanisms are also provided at the rear end of the laser-cut tab. The tab pressing mechanisms are arranged above the tab transmission mechanism and correspond to the positions of the tabs respectively. Each set of tab pressing mechanisms includes a cylinder and a pressing wheel. The cylinder pushes the pressing wheel down to contact the tab to form ribs on the tab. The tab pressing mechanism is installed on a support arm. The support arm is also provided with a guide rail. The tab pressing mechanism can move along the guide rail.

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