Diaphragm cutting machine for special-shaped battery cell

Abstract

The utility model discloses a diaphragm cutting machine for a special-shaped battery cell, and relates to the technical field of battery production. The hot cutting device comprises a mounting bottom plate, an X-axis moving assembly, a Y-axis moving assembly, a platform assembly, a film pressing assembly and a hot cutting assembly. The X-axis moving assembly is mounted on the mounting bottom plate; the Y-axis moving assembly is mounted on the X-axis moving assembly; the platform assembly comprises a workbench, an X-axis adjusting block and a Y-axis adjusting block, the X-axis adjusting block and the Y-axis adjusting block are detachably connected to the workbench, the workbench is arranged above the mounting bottom plate, and a cutting notch matched with the shape of the special-shaped battery cell is formed in the workbench; the membrane pressing assembly comprises a membrane supporting plate, a membrane pressing plate and a piezoelectric core plate, the membrane supporting plate is located at the cutting notch, the top face of the membrane supporting plate is flush with the top face of the workbench, the membrane pressing plate is arranged above the membrane supporting plate in parallel, and the piezoelectric core plate is arranged above the workbench in parallel; the hot cutting assembly is installed on the Y-axis moving assembly. The diaphragm cutting machine for the special-shaped battery cell can be used for cutting redundant diaphragms of the special-shaped battery cell, so that the production efficiency of the special-shaped battery cell is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, and particularly relates to a diaphragm cutting machine for special-shaped battery cores. Background Art

[0002] A special-shaped battery core refers to a lithium battery with an irregular shape and non-standard size. The appearance of such a battery core is special (for example, in an L shape, etc.). The diaphragm is a key component in the battery core, which is used to separate the positive and negative electrodes and allow ions to pass through. Due to the specific non-standard shape of the special-shaped battery core, there may be excess diaphragm parts between the directly stacked positive and negative electrode sheets and the diaphragm, and these excess parts need to be cut off, otherwise it will affect the overall shape and performance of the battery core. Therefore, in order to achieve large-scale production of special-shaped battery cores, there is an urgent need to provide a diaphragm cutting machine for special-shaped battery cores. Summary of the Utility Model

[0003] The technical problem to be solved by the utility model is to provide a diaphragm cutting machine for special-shaped battery cores, which can cut the excess diaphragm of the special-shaped battery cores and improve the production efficiency of the special-shaped battery cores.

[0004] To solve the above technical problem, the utility model adopts the following technical solutions:

[0005] A diaphragm cutting machine for special-shaped battery cores includes a mounting base plate, an X-axis moving component, a Y-axis moving component, a platform component, a film pressing component, and a hot cutting component; the X-axis moving component is mounted on the mounting base plate; the Y-axis moving component is mounted on the X-axis moving component to drive the Y-axis moving component to move along the X-axis direction through the X-axis moving component; the platform component includes a workbench and an X-axis adjusting block and a Y-axis adjusting block detachably connected to the workbench. The workbench is arranged above the mounting base plate, and a cutting notch adapted to the shape of the special-shaped battery core is provided on the workbench. The X-axis adjusting block and the Y-axis adjusting block are used to position and fix the special-shaped battery core; the film pressing component includes a diaphragm support plate, a diaphragm pressing plate, and a battery core pressing plate. The diaphragm support plate is located at the cutting notch and its top surface is flush with the top surface of the workbench. The diaphragm pressing plate is arranged parallel above the diaphragm support plate, and the battery core pressing plate is arranged parallel above the workbench; the hot cutting component is mounted on the Y-axis moving component to drive the hot cutting component to move along the Y-axis direction through the Y-axis moving component.

[0006] As a further elaboration of the above technical solution:

[0007] The X-axis moving component includes an X-axis linear guide rail, an X-axis lead screw nut pair, a first slide block, and a first motor. The X-axis linear guide rail is installed on the mounting base plate along the X-axis direction. The X-axis lead screw nut pair is arranged parallel above the X-axis linear guide rail. The first slide block is mounted on the slider of the X-axis linear guide rail and is connected to the nut of the X-axis lead screw nut pair. The first motor is connected to the lead screw of the X-axis lead screw nut pair.

[0008] The Y-axis moving assembly includes a Y-axis linear guide, a Y-axis screw nut pair, a second slide and a second motor. The Y-axis linear guide is installed on the first slide along the Y-axis direction. The Y-axis screw nut pair is arranged parallel to the top of the Y-axis linear guide. The second slide is installed on the slider of the Y-axis linear guide and is connected to the nut of the Y-axis screw nut pair. The second motor is connected to the screw of the Y-axis screw nut pair.

[0009] The hot cutting assembly includes a support seat, an electric bakelite board, a heating wire seat and a heating wire. The support seat is installed on the second slide seat, the electric bakelite board is vertically arranged on the support seat, and there are two heating wire seats. The two heating wire seats are respectively located above and below the cutting notch and are respectively fixed on the upper and lower ends of the electric bakelite board. The heating wire vertically passes through the cutting notch, and the two ends of the heating wire are respectively fixed on the two heating wire seats.

[0010] The hot-cutting component also includes a Z-axis linear guide, a third slide, a third motor and a transmission mechanism. The Z-axis linear guide is installed on the support seat along the Z-axis direction. The third slide is fixed on the slider of the Z-axis linear guide. The bakelite board is fixed on the third slide. The third motor is installed on the support seat. The transmission mechanism includes a fixed block, a first fisheye joint bearing and a second fisheye joint bearing. One end of the fixed block is fixedly connected to the output shaft of the third motor, and the other end is rotatably connected to the first fisheye joint bearing. The first fisheye joint bearing is threadedly connected to the second fisheye joint bearing, and the second fisheye joint bearing is rotatably connected to the third slide.

[0011] A plurality of first connecting screw holes are arranged at intervals along the X-axis direction on the workbench, and a first waist-shaped hole adapted to the first connecting screw hole is provided on the X-axis adjustment block along the X-axis direction; a plurality of second connecting screw holes are arranged at intervals along the Y-axis direction on the workbench, and a second waist-shaped hole adapted to the second connecting screw hole is provided on the Y-axis adjustment block along the Y-axis direction.

[0012] The film pressing assembly also includes a cylinder support plate, a first cylinder and a second cylinder. The cylinder support plate is fixed on the mounting base plate, and the first cylinder and the second cylinder are vertically installed on the cylinder support plate; the diaphragm support plate is fixed on the cylinder support plate, the diaphragm pressing plate is connected to the piston rod output end of the first cylinder, and the piezoelectric core plate is connected to the piston rod output end of the second cylinder.

[0013] Compared with the prior art, the present invention achieves at least the following beneficial effects:

[0014] By adjusting the X-axis adjustment block and the Y-axis adjustment block, the special-shaped battery cell can be positioned, and the diaphragm support plate, the diaphragm pressure plate and the piezoelectric core plate can press the diaphragm and the battery cell, thereby achieving positioning and fixation of the diaphragm and the battery cell; the hot cutting component can move along the X-axis and Y-axis directions under the drive of the X-axis moving component and the Y-axis moving component, so that the excess diaphragm on the special-shaped battery cell can be automatically cut at the cutting notch of the workbench. The utility model can be used for special-shaped battery cells, realize large-scale production of special-shaped battery cells, and improve the production efficiency of special-shaped battery cells. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments of the present invention will now be described, by way of example only, with reference to the accompanying drawings, in which:

[0016] Figure 1 This is a schematic structural diagram of one embodiment of the present utility model;

[0017] Figure 2 for Figure 1 A top view of an embodiment;

[0018] Figure 3 for Figure 1 A schematic structural diagram of the X-axis moving assembly and the Y-axis moving assembly of the embodiment;

[0019] Figure 4 for Figure 1 A schematic structural diagram of a hot cutting assembly of an embodiment;

[0020] Figure 5 for Figure 1 Schematic diagram of the structure of the platform assembly and the film pressing assembly of the embodiment.

[0021] The numbers in the figure are: 1. Mounting base; 2. X-axis moving assembly; 21. X-axis linear guide; 22. X-axis screw nut pair; 23. First slide; 24. First motor; 3. Y-axis moving assembly; 31. Y-axis linear guide; 32. Y-axis screw nut pair; 33. Second slide; 34. Second motor; 4. Platform assembly; 41. Workbench; 411. Cutting notch; 412. First connecting screw hole; 413. Second connecting screw hole; 42. X-axis adjustment block; 421. First waist-shaped hole; 43. Y-axis Adjusting block; 431, second waist-shaped hole; 5, film pressing assembly; 51, diaphragm support plate; 52, diaphragm pressing plate; 53, piezoelectric core plate; 54, cylinder support plate; 55, first cylinder; 56, second cylinder; 6, hot cutting assembly; 61, support seat; 62, bakelite board; 63, heating wire seat; 64, Z-axis linear guide; 65, third slide; 66, third motor; 67, transmission mechanism; 671, fixing block; 672, first fisheye joint bearing; 673, second fisheye joint bearing; 7, special-shaped battery cell. DETAILED DESCRIPTION

[0022] The present utility model will be described in detail below with reference to the exemplary embodiments in the accompanying drawings. It should be understood, however, that the present application can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.

[0023] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present application 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 thus should not be construed as a limitation to the present application. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "a number of" and "a plurality of" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0024] As Figures 1 - 2 shown, in an embodiment of the present utility model, the special-shaped battery cell diaphragm cutting machine includes a mounting base plate 1, an X-axis moving assembly 2, a Y-axis moving assembly 3, a platform assembly 4, a film pressing assembly 5, and a hot cutting assembly 6.

[0025] The X-axis moving component 2 is installed on the mounting base plate 1; the Y-axis moving component 3 is installed on the X-axis moving component 2 to drive the Y-axis moving component 3 to move along the X-axis direction through the X-axis moving component 2; the platform component 4 includes a workbench 41, an X-axis adjusting block 42 and a Y-axis adjusting block 43. The workbench 41 is arranged parallel to the upper side of the mounting base plate 1, and a cutting notch 411 adapted to the shape of the special-shaped battery cell 7 is provided on the workbench 41. The X-axis adjusting block 42 and the Y-axis adjusting block 43 are detachably connected to the workbench 41, and the X-axis adjusting block 42 and the Y-axis adjusting block 43 are used to position and fix the special-shaped battery cell 7 on the workbench 41; the film pressing component 5 includes a diaphragm support plate 51, a diaphragm pressing plate 52 and a piezoelectric cell plate 53. The diaphragm support plate 51 is located at the cutting notch 411 and its top surface is flush with the top surface of the workbench 41. The diaphragm pressing plate 52 is arranged parallel to the upper side of the diaphragm support plate 51. The diaphragm support plate 51 and the diaphragm pressing plate 52 cooperate to press the diaphragm. The piezoelectric cell plate 53 is arranged parallel to the upper side of the workbench 41, and the piezoelectric cell plate 53 is used to press the special-shaped battery cell 7; the hot cutting component 6 is installed on the Y-axis moving component 3. By presetting corresponding action programs, the movement of the X-axis moving component 2 and the Y-axis moving component 3 is controlled. The Y-axis moving component 3 can drive the hot cutting component 6 to move along the Y-axis direction, and the X-axis moving component 2 can drive the Y-axis moving component 3 and the hot cutting component 6 to move along the X-axis direction, so that the hot cutting component 6 can cut the redundant diaphragm of the special-shaped battery cell 7 in the X and Y axis directions.

[0026] Reference Figure 3 , further, the X-axis moving component 2 includes an X-axis linear guide rail 21, an X-axis lead screw nut pair 22, a first sliding seat 23 and a first motor 24. The X-axis linear guide rail 21 is installed on the mounting base plate 1 along the X-axis direction. The X-axis lead screw nut pair 22 is arranged parallel to the upper side of the X-axis linear guide rail 21. The first sliding seat 23 is installed on the slider of the X-axis linear guide rail 21 and is connected to the nut of the X-axis lead screw nut pair 22. The first motor 24 is connected to the lead screw of the X-axis lead screw nut pair 22. By driving the X-axis lead screw nut pair 22 to work through the first motor 24, the first sliding seat 23 can be driven to move along the X-axis linear guide rail 21.

[0027] The Y-axis moving component 3 includes a Y-axis linear guide rail 31, a Y-axis lead screw nut pair 32, a second sliding seat 33 and a second motor 34. The Y-axis linear guide rail 31 is installed on the first sliding seat 23 along the Y-axis direction. The Y-axis lead screw nut pair 32 is arranged parallel to the upper side of the Y-axis linear guide rail 31. The second sliding seat 33 is installed on the slider of the Y-axis linear guide rail 31 and is connected to the nut of the Y-axis lead screw nut pair 32. The second motor 34 is connected to the lead screw of the Y-axis lead screw nut pair 32. By driving the Y-axis lead screw nut pair 32 to work through the second motor 34, the second sliding seat 33 can be driven to move along the Y-axis linear guide rail 31.

[0028] ReferenceFigure 4 The hot cutting assembly 6 includes a support base 61, a bakelite board 62, a heating wire holder 63, and a heating wire. The support base 61 is mounted on the second slide 33, and the bakelite board 62 is vertically mounted on the support base 61. Two heating wire holders 63 are provided, one above and one below the cutting notch 411, and are fixed to the upper and lower ends of the bakelite board 62, respectively. The heating wire vertically passes through the cutting notch 411, and the two ends of the heating wire are fixed to the two heating wire holders 63. When the hot cutting assembly 6 is in operation, the heating wire is heated to a sufficiently high temperature by the heating device, which causes the diaphragm to melt, thereby achieving the purpose of cutting. Driven by the X-axis moving assembly 2 and the Y-axis moving assembly 3, the heating wire can cut the excess diaphragm of the special-shaped battery cell 7 in the X-axis and Y-axis directions.

[0029] Furthermore, the hot-cutting component 6 also includes a Z-axis linear guide 64, a third slide 65, a third motor 66 and a transmission mechanism 67. The Z-axis linear guide 64 is installed on the support seat 61 along the Z-axis direction, the third slide 65 is fixed on the slider of the Z-axis linear guide 64, the bakelite board 62 is fixed on the third slide 65, and the third motor 66 is installed on the support seat 61. Preferably, the third motor 66 is an AC synchronous motor, and the transmission mechanism 67 includes a fixed block 671, a first fisheye joint bearing 672 and a second fisheye joint bearing 673. One end of the fixed block 671 is fixedly connected to the output shaft of the third motor 66, and the other end is rotatably connected to the first fisheye joint bearing 672. The first fisheye joint bearing 672 is threadedly connected to the second fisheye joint bearing 673, and the second fisheye joint bearing 673 is rotatably connected to the third slide 65. Specifically, the first fisheye joint bearing 672 and the second fisheye joint bearing 673 are penetrated by screws (the screws are not shown in the figure), the screws are rotatably connected to the first fisheye joint bearing 672 and the second fisheye joint bearing 673, and the fixed block 671 and the third slide 65 are threadedly connected to the screws; under the drive of the third motor 66, the fixed block 671 can rotate around the output shaft of the third motor 66, and the fixed block 671 drives the first fisheye joint bearing 672 and the second fisheye joint bearing 673 to swing. Since the first fisheye joint bearing 672 and the second fisheye joint bearing 673 can rotate around the screws, the third slide 65 can be driven to move up and down along the Z-axis linear guide 64, and the upper and lower positions of the bakelite board 62, the heating wire holder 63 and the heating wire can be adjusted as needed, thereby ensuring the cutting accuracy and quality of the heating wire.

[0030] refer to Figure 5Optionally, a plurality of first connecting screw holes 412 are provided on the workbench 41 at intervals along the X-axis direction, and a first waist-shaped hole 421 is provided on the X-axis adjustment block 42 along the X-axis direction to match the first connecting screw hole 412; a plurality of second connecting screw holes 413 are provided on the workbench 41 at intervals along the Y-axis direction, and a second waist-shaped hole 431 is provided on the Y-axis adjustment block 43 along the Y-axis direction to match the second connecting screw hole 413. By setting screws on the X-axis adjustment block 42 and the Y-axis adjustment block 43, the screws pass through the first waist-shaped hole 421 or the second waist-shaped hole 431 and are threadedly connected to the first connecting screw hole 412 or the second connecting screw hole 413; when the screws are loosened, the X-axis adjustment block 42 can be moved to a suitable position along the X-axis direction, and the Y-axis adjustment block 43 can be moved to a suitable position along the Y-axis direction according to the size of the special-shaped battery cell 7; after tightening the screws, the X-axis adjustment block 42 and the Y-axis adjustment block 43 are positioned and fixed on the outer side wall of the special-shaped battery cell 7, thereby realizing the positioning and fixation of the special-shaped battery cell 7.

[0031] Optionally, the film pressing assembly 5 further includes a cylinder support plate 54, a first cylinder 55, and a second cylinder 56. The cylinder support plate 54 is fixed to the mounting base 1, and the first cylinder 55 and the second cylinder 56 are vertically mounted on the cylinder support plate 54. The diaphragm support plate 51 is fixed to the cylinder support plate 54, the diaphragm pressing plate 52 is connected to the piston rod output end of the first cylinder 55, and the piezoelectric core plate 53 is connected to the piston rod output end of the second cylinder 56. Preferably, the first cylinder 55 and the second cylinder 56 are biaxial cylinders. The first cylinder 55 and the second cylinder 56 are respectively used to drive the diaphragm pressing plate 52 and the piezoelectric core plate 53 to move up and down, thereby achieving compression and loosening of the diaphragm and the battery cell, so as to facilitate the hot cutting assembly 6 to cut the diaphragm.

[0032] The method of using the present invention is as follows: placing the special-shaped battery cell 7 on the workbench 41, positioning the special-shaped battery cell 7 by adjusting the X-axis adjustment block 42 and the Y-axis adjustment block 43, pressing the diaphragm and the battery cell by the diaphragm support plate 51, the diaphragm pressure plate 52 and the piezoelectric core plate 53, thereby achieving the positioning and fixation of the diaphragm and the battery cell; the hot cutting component 6 can move along the X and Y axis directions under the drive of the X-axis moving component 2 and the Y-axis moving component 3, so that the heating wire can cut the excess diaphragm on the special-shaped battery cell 7 at the cutting notch 411.

[0033] It should be understood that all the above embodiments are illustrative rather than restrictive. Any modifications, equivalent changes and modifications made by those skilled in the art to the specific embodiments described above under the concept of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An irregular-shaped battery cell diaphragm cutting machine, characterized in that: It includes an installation base plate, an X-axis moving component, a Y-axis moving component, a platform component, a film pressing component, and a hot cutting component; The X-axis moving component is installed on the installation base plate; The Y-axis moving component is installed on the X-axis moving component to drive the Y-axis moving component to move along the X-axis direction by the X-axis moving component; The platform component includes a workbench and an X-axis adjustment block and a Y-axis adjustment block detachably connected to the workbench. The workbench is arranged above the installation base plate, and a cutting notch adapted to the shape of the special-shaped battery cell is provided on the workbench. The X-axis adjustment block and the Y-axis adjustment block are used to position and fix the special-shaped battery cell; The film pressing component includes a diaphragm support plate, a diaphragm pressing plate, and a battery cell pressing plate. The diaphragm support plate is located at the cutting notch and its top surface is flush with the top surface of the workbench. The diaphragm pressing plate is arranged parallel above the diaphragm support plate, and the battery cell pressing plate is arranged parallel above the workbench; The hot cutting component is installed on the Y-axis moving component to drive the hot cutting component to move along the Y-axis direction by the Y-axis moving component.

2. The special-shaped battery core diaphragm cutting machine according to claim 1, characterized in that: The X-axis moving component includes an X-axis linear guide rail, an X-axis lead screw nut pair, a first slide seat, and a first motor. The X-axis linear guide rail is installed on the installation base plate along the X-axis direction. The X-axis lead screw nut pair is arranged parallel above the X-axis linear guide rail. The first slide seat is installed on the slider of the X-axis linear guide rail and is connected to the nut of the X-axis lead screw nut pair. The first motor is connected to the lead screw of the X-axis lead screw nut pair.

3. The special-shaped battery core diaphragm cutting machine according to claim 2, wherein: The Y-axis moving component includes a Y-axis linear guide rail, a Y-axis lead screw nut pair, a second slide seat, and a second motor. The Y-axis linear guide rail is installed on the first slide seat along the Y-axis direction. The Y-axis lead screw nut pair is arranged parallel above the Y-axis linear guide rail. The second slide seat is installed on the slider of the Y-axis linear guide rail and is connected to the nut of the Y-axis lead screw nut pair. The second motor is connected to the lead screw of the Y-axis lead screw nut pair.

4. The special-shaped battery cell diaphragm cutting machine according to claim 3, characterized in that: The hot cutting component includes a support seat, a bakelite board, a heating wire seat, and a heating wire. The support seat is installed on the second slide seat. The bakelite board is arranged vertically on the support seat. There are two heating wire seats, which are respectively located above and below the cutting notch and are fixed to the upper and lower ends of the bakelite board respectively. The heating wire passes vertically through the cutting notch, and both ends of the heating wire are fixed to the two heating wire seats respectively.

5. The special-shaped battery core diaphragm cutting machine according to claim 4, characterized in that: The hot-cutting component also includes a Z-axis linear guide, a third slide, a third motor and a transmission mechanism. The Z-axis linear guide is installed on the support seat along the Z-axis direction, the third slide is fixed on the slider of the Z-axis linear guide, the bakelite board is fixed on the third slide, and the third motor is installed on the support seat. The transmission mechanism includes a fixed block, a first fisheye joint bearing and a second fisheye joint bearing. One end of the fixed block is fixedly connected to the output shaft of the third motor, and the other end is rotatably connected to the first fisheye joint bearing. The first fisheye joint bearing is threadedly connected to the second fisheye joint bearing, and the second fisheye joint bearing is rotatably connected to the third slide.

6. The special-shaped battery core diaphragm cutting machine according to claim 1, wherein: A plurality of first connecting screw holes are provided on the workbench at intervals along the X-axis direction, and a first waist-shaped hole adapted to the first connecting screw hole is provided on the X-axis adjustment block along the X-axis direction; a plurality of second connecting screw holes are provided on the workbench at intervals along the Y-axis direction, and a second waist-shaped hole adapted to the second connecting screw hole is provided on the Y-axis adjustment block along the Y-axis direction.

7. The special-shaped battery cell diaphragm cutting machine according to claim 1, wherein: The film pressing assembly also includes a cylinder support plate, a first cylinder and a second cylinder. The cylinder support plate is fixed on the mounting base plate, and the first cylinder and the second cylinder are vertically installed on the cylinder support plate; the diaphragm support plate is fixed on the cylinder support plate, the diaphragm pressing plate is connected to the piston rod output end of the first cylinder, and the piezoelectric core plate is connected to the piston rod output end of the second cylinder.

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