Automatic coating and splitting machine for solid-state lithium battery

Abstract

The utility model discloses an automatic coating and splitting machine for a solid-state lithium battery, which belongs to the technical field of lithium batteries and comprises a conveying device, a coating device, a drying device and a cutting device. The conveying device comprises a driving wheel, a driven wheel and a conveying belt wound on the driving wheel and the driven wheel, and the coating device, the drying device and the cutting device are sequentially arranged along the conveying belt. And the cutting device is connected with the driven wheel, so that the work of the cutting device is controlled by the conveying device. According to the automatic coating and splitting machine for the solid-state lithium battery, the conveying device and the cutting device operate synchronously, on one hand, it can be guaranteed that the cutting device conducts cutting after the conveying belt moves by the same distance every time, and therefore it is guaranteed that the lengths of cut pole pieces are more uniform, and on the other hand, the cutting efficiency is improved. And the cutting device is driven by the transmission device, so that a motor can be saved, and the cost is saved.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium batteries, and in particular to an automatic coating and slitting machine for solid-state lithium batteries. Background Art

[0002] Lithium batteries are often used as a power source for electric vehicles and other electric equipment. With the widespread popularization and application of electric equipment such as new energy vehicles, lithium batteries have also been widely used. Therefore, the demand for lithium batteries is increasing, which puts higher and higher requirements on the production efficiency of lithium batteries.

[0003] Lithium batteries include pole pieces, electrolytes, shells, electrodes, etc., among which pole pieces are an important part of lithium batteries. Lithium battery pole pieces include foil and coatings on both sides. The transmission structure and cutting structure of traditional automatic slitting machines operate separately, resulting in different lengths of pole pieces after cutting, which adds trouble to subsequent processing links. Utility Model Content

[0004] The utility model discloses a solid-state lithium battery automatic coating and slitting machine to improve the above-mentioned problems.

[0005] The technical solution adopted by the utility model to solve the above technical problems is:

[0006] Based on the above purpose, the utility model discloses a solid-state lithium battery automatic coating and slitting machine, comprising:

[0007] A transmission device, the transmission device comprising a motor, a driving wheel, a driven wheel and a conveyor belt for driving the pole piece to move, the conveyor belt is sleeved between the driving wheel and the driven wheel, and the motor is in transmission connection with the driving wheel;

[0008] A coating device, the coating device is used to coat the electrode piece on the conveying device;

[0009] a drying device, the drying device being located behind the coating device; and

[0010] A cutting device is located behind the drying device and is connected to the driven wheel so that the operation of the cutting device is controlled by the conveying device.

[0011] Optionally: the cutting device includes a rotating structure and a cutting knife, the input end of the rotating structure is connected to the driven wheel, the cutting knife is installed at the output end of the rotating structure, and the cutting knife is set toward the conveyor belt, and the rotating structure is used to drive the cutting knife to reciprocate to cut the pole piece.

[0012] Optionally: the rotating structure includes a mounting seat, a first rotating block, a first connecting rod and a first slider, the mounting seat is connected to the conveying device, the first slider is slidably connected to the mounting seat, the first rotating block is connected to the driven wheel, and the first rotating block can rotate synchronously with the driven wheel, one end of the connecting rod is eccentrically connected to the first rotating block, the other end of the first rotating block is connected to the first slider, and the cutting knife is installed on the first slider.

[0013] Optionally: a guide groove is provided on the mounting seat, the guide groove is vertically arranged to the conveyor belt, the first sliding block is located in the guide groove, and the first sliding block is slidably matched with the guide groove.

[0014] Optionally: the rotating structure includes a second rotating block, a stopper, a second connecting rod and a second slider, the second rotating block is connected to the driven wheel, a shift block is provided at an eccentric position on the second rotating block, a slide groove is provided on the stopper, the slide groove extends along the length direction of the stopper, the shift block is slidably matched with the slide groove, the stopper is slidably matched with the conveying device, one end of the second connecting rod is connected to the stopper, the other end of the second connecting rod is connected to the second slider, the connecting rod and the stopper are vertically arranged, and the cutting knife is installed on the second slider.

[0015] Optionally: a plurality of cutting grooves are arranged on the conveyor belt, and the plurality of cutting grooves are evenly arranged on the conveyor belt, and the distance between the cutting grooves is adapted to the cutting speed of the cutting device.

[0016] Optionally: the coating device includes a glue tank and a coating brush, and the coating brush is arranged at the output end of the glue tank.

[0017] Optionally: the drying device includes a thermal circuit structure and an air guide port, the air guide port is arranged at the output end of the thermal circuit structure, and the air guide port is directly opposite to the coating area of ​​the electrode.

[0018] Optionally: a rolling device is also included, the rolling device is used to roll the electrode coating area, and the rolling device is located behind the drying device.

[0019] Optionally: the rolling device includes two rolling shafts, the two rolling shafts are respectively located on the upper and lower sides of the conveyor belt, and the axes of the two rolling shafts are parallel to the axis of the driving wheel.

[0020] Compared with the prior art, the beneficial effects achieved by the utility model are:

[0021] The utility model discloses an automatic coating and slitting machine for solid-state lithium batteries, which includes a conveying device, a coating device, a drying device and a cutting device. The conveying device includes a driving wheel, a driven wheel and a conveyor belt wound thereon, and the coating device, the drying device and the cutting device are sequentially arranged along the conveyor belt. The cutting device is connected to the driven wheel so that the operation of the cutting device is controlled by the conveying device.

[0022] The conveying device and the cutting device in the solid-state lithium battery automatic coating and slitting machine disclosed by the utility model operate synchronously. On the one hand, it can ensure that the cutting device performs cutting after the conveyor belt moves the same distance each time, thereby ensuring that the length of the cut pole pieces is more uniform. On the other hand, the cutting device is driven by the transmission device, which can save a motor and thus save costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of an automatic coating and slitting machine for solid-state lithium batteries disclosed in an embodiment of the utility model is shown;

[0024] Figure 2 A schematic diagram showing a second rotary structure disclosed in an embodiment of the utility model is shown;

[0025] Figure 3 A cross-sectional schematic diagram of a coating device disclosed in an embodiment of the utility model is shown;

[0026] Figure 4 A cross-sectional schematic diagram of a drying device disclosed in an embodiment of the utility model is shown.

[0027] In the figure:

[0028] 100-transmission device, 110-driving wheel, 120-driven wheel, 130-conveyor belt, 200-coating device, 210-glue groove, 220-coating brush, 300-drying device, 310-thermal circuit structure, 320-air guide port, 400-cutting device, 410-rotation structure, 411-mounting seat, 4111-guide groove, 412-first rotating block, 413-first connecting rod, 414-first slider, 415-second rotating block, 416-stop block, 4161-slide groove, 417-second connecting rod, 418-second slider, 420-cutting knife, 500-pole piece, 600-rolling device, 610-rolling shaft. DETAILED DESCRIPTION

[0029] The present invention will be further described in detail below through specific implementation examples in conjunction with the accompanying drawings.

[0030] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described above in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0031] Therefore, the above detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0033] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the solid-state lithium battery automatic coating and slitting machine or component referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0034] 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. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and 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, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0036] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0037] Example:

[0038] See also Figures 1 to 4 The embodiment of the utility model discloses a solid-state lithium battery automatic coating and slitting machine, which includes a conveying device 100, a coating device 200, a drying device 300 and a cutting device 400. The conveying device 100 includes a driving wheel 110, a driven wheel 120 and a conveyor belt 130 wound thereon, and the coating device 200, the drying device 300 and the cutting device 400 are sequentially arranged along the conveyor belt 130. Among them, the cutting device 400 is connected to the driven wheel 120 so that the operation of the cutting device 400 is controlled by the conveying device 100.

[0039] The conveying device 100 and the cutting device 400 in the solid-state lithium battery automatic coating and slitting machine disclosed in this embodiment operate synchronously. On the one hand, it can ensure that the cutting device 400 cuts after the conveyor belt 130 moves the same distance each time, thereby ensuring that the length of the cut electrode 500 is more uniform. On the other hand, the cutting device 400 is driven by a transmission device, which can save a motor and thus save costs.

[0040] See also Figure 1 The conveying device 100 includes a frame, a motor, a driving wheel 110, a driven wheel 120 and a conveyor belt 130 for driving the pole piece 500 to move. The conveyor belt 130 is sleeved between the driving wheel 110 and the driven wheel 120, and the motor is in transmission connection with the driving wheel 110. The driving wheel 110 is driven by the motor to rotate. When the driving wheel 110 rotates, it can drive the conveyor belt 130 to transmit and thus drive the pole piece 500 thereon to move. At the same time, the conveyor belt 130 will also drive the driven wheel 120 to rotate synchronously when moving. The motor is installed on the frame, and the driving wheel 110 and the driven wheel 120 are both rotatably connected to the frame, and the axis of the driving wheel 110 is arranged parallel to the axis of the driven wheel 120.

[0041] See also Figure 3 The coating device 200 is used to coat the electrode 500 on the conveying device 100. The coating device 200 is installed on the frame, and the coating device 200 is respectively located on both sides of the conveyor belt 130. The coating device 200 includes a glue tank 210 and a coating brush 220, and the coating brush 220 is arranged at the output end of the glue tank 210. The edge position of the electrode 500 is located within the range of the coating brush 220 when moving.

[0042] See also Figure 4The drying device 300 is installed on the frame and is located behind the coating device 200. The drying device 300 is used to dry the coating position of the pole piece 500. The drying device 300 includes a thermal circuit structure 310 and an air guide 320. The air guide 320 is arranged at the output end of the thermal circuit structure 310, and the air guide 320 is directly opposite to the coating area of ​​the pole piece 500.

[0043] See also Figure 1 The solid-state lithium battery automatic coating and slitting machine disclosed in this embodiment further includes a rolling device 600, which is used to roll the coating area of ​​the pole piece 500, and the rolling device 600 is located behind the drying device 300. The rolling device 600 includes two rolling shafts 610, which are respectively located on the upper and lower sides of the conveyor belt 130, and the axes of the two rolling shafts 610 are parallel to the axis of the driving wheel 110.

[0044] See also Figure 1 The cutting device 400 includes a rotating structure 410 and a cutting knife 420. The input end of the rotating structure 410 is connected to the driven wheel 120, and the cutting knife 420 is installed at the output end of the rotating structure 410, and the cutting knife 420 is arranged toward the conveyor belt 130. The rotating structure 410 is used to drive the cutting knife 420 to reciprocate to cut the pole piece 500.

[0045] In this embodiment, the rotary structure 410 may include a mounting seat 411, a first rotating block 412, a first connecting rod 413 and a first slider 414. The mounting seat 411 is connected to the frame, the first slider 414 is slidably connected to the mounting seat 411, the first rotating block 412 is connected to the driven wheel 120, and the first rotating block 412 can rotate synchronously with the driven wheel 120. One end of the connecting rod is eccentrically connected to the first rotating block 412, the other end of the first rotating block 412 is connected to the first slider 414, and the cutting knife 420 is installed on the first slider 414. When the first rotating block 412 rotates with the driven wheel 120, since the first connecting rod 413 and the first rotating block 412 are eccentrically arranged, the first rotating block 412 will drive the first slider 414 to reciprocate through the first connecting rod 413, thereby driving the cutting knife 420 to cut the pole piece 500. In order to ensure that the first slider 414 moves along the specified trajectory and thus ensure that the cutting knife 420 can cut smoothly, a guide groove 4111 can be set on the mounting seat 411. The guide groove 4111 is set perpendicular to the conveyor belt 130. The first slider 414 is located in the guide groove 4111, and the first slider 414 slides in cooperation with the guide groove 4111.

[0046] Among them, since the conveyor belt 130 will drive the driven wheel 120 to rotate a certain angle every time it moves a certain distance, and every time the driven wheel 120 rotates one circle, the cutting knife 420 just completes a reciprocating motion, that is, every time the driven wheel 120 rotates one circle, it will drive the cutting knife 420 to perform a cutting action, thereby ensuring that the length of each cut pole piece 500 is consistent.

[0047] See also Figure 2 The present embodiment also discloses a rotary structure 410, which includes a second rotating block 415, a stopper 416, a second connecting rod 417 and a second slider 418. The second rotating block 415 is connected to the driven wheel 120, and a shifting block is provided at an eccentric position on the second rotating block 415. A slide groove 4161 is provided on the stopper 416, and the slide groove 4161 extends along the length direction of the stopper 416. The shifting block and the slide groove 4161 are slidably matched, and the stopper 416 is slidably matched with the conveying device 100. One end of the second connecting rod 417 is connected to the stopper 416, and the other end of the second connecting rod 417 is connected to the second slider 418. The connecting rod and the stopper 416 are vertically arranged, and the cutting knife 420 is installed on the second slider 418. When the second rotating block 415 rotates, it drives the stopper 416 to move left and right through the shifting block, and then drives the second connecting rod 417, the second sliding block 418 and the cutting knife 420 to move back and forth, thereby achieving uniform cutting of the pole piece 500.

[0048] Of course, the above structures are only some implementations of the rotating structure 410 in this embodiment. In other implementations, it is also possible to set the rotating structure 410 to other structures that can drive the cutting knife 420 to perform reciprocating motion.

[0049] In order to achieve a better cutting effect of the cutting device 400, a cutting groove may be provided on the conveyor belt 130. A plurality of cutting grooves may be provided, and the plurality of cutting grooves are evenly provided on the conveyor belt 130, and the distance between the cutting grooves is adapted to the cutting speed of the cutting device 400. In this way, each time cutting is performed, the end of the cutting knife 420 may cut into the cutting groove, thereby completely cutting off the pole piece 500, and avoiding the generation of burrs and the like at the cutting position of the pole piece 500.

[0050] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A solid-state lithium battery automatic coating and slitting machine, characterized in that: include: A transmission device, the transmission device comprising a motor, a driving wheel, a driven wheel and a conveyor belt for driving the pole piece to move, the conveyor belt is sleeved between the driving wheel and the driven wheel, and the motor is in transmission connection with the driving wheel; A coating device, the coating device is used to coat the electrode piece on the conveying device; A drying device, the drying device is located behind the coating device; as well as A cutting device is located behind the drying device and is connected to the driven wheel so that the operation of the cutting device is controlled by the conveying device.

2. The solid-state lithium battery automatic coating and slitting machine according to claim 1, characterized in that: The cutting device includes a rotating structure and a cutting knife. The input end of the rotating structure is connected to the driven wheel. The cutting knife is installed at the output end of the rotating structure and is arranged toward the conveyor belt. The rotating structure is used to drive the cutting knife to reciprocate to cut the pole piece.

3. The solid-state lithium battery automatic coating and slitting machine according to claim 2, characterized in that: The rotating structure includes a mounting seat, a first rotating block, a first connecting rod and a first slider, the mounting seat is connected to the conveying device, the first slider is slidably connected to the mounting seat, the first rotating block is connected to the driven wheel, and the first rotating block can rotate synchronously with the driven wheel, one end of the connecting rod is eccentrically connected to the first rotating block, the other end of the first rotating block is connected to the first slider, and the cutting knife is installed on the first slider.

4. The solid-state lithium battery automatic coating and slitting machine according to claim 3, characterized in that: The mounting seat is provided with a guide groove, the guide groove is vertically arranged with the conveyor belt, the first sliding block is located in the guide groove, and the first sliding block is slidably matched with the guide groove.

5. The solid-state lithium battery automatic coating and slitting machine according to claim 2, characterized in that: The rotating structure includes a second rotating block, a stopper, a second connecting rod and a second sliding block. The second rotating block is connected to the driven wheel. A shift block is provided at an eccentric position on the second rotating block. A slide groove is provided on the stopper. The slide groove extends along the length direction of the stopper. The shift block is slidably matched with the slide groove. The stopper is slidably matched with the conveying device. One end of the second connecting rod is connected to the stopper, and the other end of the second connecting rod is connected to the second sliding block. The connecting rod and the stopper are vertically arranged, and the cutting knife is installed on the second sliding block.

6. The solid-state lithium battery automatic coating and slitting machine according to claim 2, characterized in that: The conveyor belt is provided with a plurality of cutting grooves, and the plurality of cutting grooves are evenly arranged on the conveyor belt, and the distance between the cutting grooves is adapted to the cutting speed of the cutting device.

7. The solid-state lithium battery automatic coating and slitting machine according to any one of claims 1 to 6, characterized in that: The coating device comprises a glue tank and a coating brush, and the coating brush is arranged at the output end of the glue tank.

8. The solid-state lithium battery automatic coating and slitting machine according to any one of claims 1 to 6, characterized in that: The drying device comprises a thermal circuit structure and an air guide port, wherein the air guide port is arranged at the output end of the thermal circuit structure and the air guide port is directly opposite to the coating area of ​​the electrode piece.

9. The solid-state lithium battery automatic coating and slitting machine according to any one of claims 1 to 6, characterized in that: It also includes a rolling device, which is used to roll the electrode coating area, and the rolling device is located behind the drying device.

10. The solid-state lithium battery automatic coating and slitting machine according to claim 9, characterized in that: The rolling device comprises two rolling shafts, which are respectively located at the upper and lower sides of the conveyor belt, and the axes of the two rolling shafts are parallel to the axis of the driving wheel.

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