A zebra crossing-shaped continuous calendering lithium supplementing device

Abstract

This invention discloses a zebra stripe-shaped continuous calendering and coating lithium replenishment device, belonging to the technical field of lithium replenishment devices. It includes a base, with a first worktable and a second worktable fixedly mounted on the outer end face of the base. A stripe peeling device is provided above both the first and second worktables. An A-side traction film positioning mechanism and an A-side calendering roller are fixedly mounted on the upper left of the base, and a B-side traction film positioning mechanism and a B-side calendering roller are fixedly mounted on the upper right of the base. A fine-tuning mechanism, a speed encoder, a color mark sensor, a coating mechanism, an electrode unwinding drum, and an electrode winding drum are fixedly mounted on the outer surface of the base. The electrode unwinding drum and the electrode winding drum are connected by an electrode, which passes through the coating mechanism. This invention can achieve the integrated functions of A-side and B-side calendering, continuous zebra stripe peeling, and lithium film alignment positioning, realizing a multi-functional device with strong functionality, effectively reducing processing costs, and high practicality.

Description

[0001] This invention is a divisional application of Chinese invention patent application number 202110293665.6, entitled "A Zebra Stripe Shaped Continuous Calendering Coating Lithium Supplementation Device", filed on March 19, 2021. Technical Field

[0002] This invention relates to the field of lithium replenishment equipment technology, and specifically to a zebra-striped continuous calendered coating lithium replenishment device. Background Technology

[0003] Lithium-ion batteries are widely used in consumer electronics and electric vehicles due to their high energy density, long lifespan, and environmentally friendly nature. However, during the first charge and discharge cycle, a solid electrolyte interphase (SEI) film forms in lithium-ion batteries. This SEI film consumes some lithium, resulting in irreversible initial capacity loss, which directly leads to a loss of battery capacity. To compensate for this lithium loss, a process for replenishing lithium on the battery electrodes has been developed.

[0004] Existing lithium replenishment devices often involve multiple machines working together during actual processing, which is cumbersome and has high production costs, thus having certain limitations. To address this, we propose a zebra-striped continuous calendering and coating lithium replenishment device. Summary of the Invention

[0005] 1. Technical problems to be solved

[0006] To address the problems existing in the prior art, the purpose of this invention is to provide a zebra stripe-shaped continuous calendering and coating lithium replenishment device. It can integrate the functions of calendering on both A and B sides, continuous zebra stripe peeling, and lithium film alignment positioning, achieving multi-functionality, strong functionality, effectively reducing processing costs, and high practicality.

[0007] 2. Technical Solution

[0008] To solve the above problems, the present invention adopts the following technical solution:

[0009] A zebra-striped continuous calendering and coating lithium replenishment device includes a base. A first worktable and a second worktable are fixedly mounted on the outer end face of the base. A stripe peeling device is provided above both the first and second worktables. An A-side traction film positioning mechanism and an A-side calendering roller are fixedly mounted on the upper left of the base. A B-side traction film positioning mechanism and a B-side calendering roller are fixedly mounted on the upper right of the base. The A-side traction film positioning mechanism and the A-side calendering roller are connected by a traction film, and the B-side traction film positioning mechanism and the B-side calendering roller are connected by a traction film. A fine-tuning mechanism, a speed encoder, a color mark sensor, a coating mechanism, an electrode unwinding drum, and an electrode winding drum are fixedly mounted on the outer surface of the base. The electrode unwinding drum and the electrode winding drum are connected by an electrode, and the electrode passes through the coating mechanism.

[0010] As a preferred embodiment of the present invention, two stripe removal devices are provided, and they are of the same model and specifications. The stripe removal device installed above the first workbench is an A-side stripe removal device, and the stripe removal device installed above the second workbench is a B-side stripe removal device. The stripe removal device includes a sealing film, a vacuum relief port, a moving roller, a fixed roller, and a vacuum adsorption zone.

[0011] In a preferred embodiment of the present invention, the outer diameter of the fixed roller is consistent with the inner diameter of the moving roller, the moving roller is sleeved on the outer wall of the fixed roller and forms a movable connection, and the moving roller is provided with fifty circumferences about the center of the fixed roller.

[0012] As a preferred embodiment of the present invention, both the A-side traction film positioning mechanism and the B-side traction film positioning mechanism are composed of a traction film unwinding drum and a driving mechanism.

[0013] As a preferred embodiment of the present invention, both the A-side calendering roll and the B-side calendering roll consist of two pressure rolls and are externally connected to a drive unit.

[0014] As a preferred embodiment of the present invention, the fine-tuning mechanism consists of a cylinder and a telescopic rod, and the left end of the fine-tuning mechanism is connected to the roller through a connecting plate. The base is provided with a slide rail, the size of which is consistent with the diameter of the roller, and the roller is slidably connected to the slide rail.

[0015] As a preferred embodiment of the present invention, the speed encoder is selected as an encoder with model number K76-J3V2500B30.

[0016] As a preferred embodiment of the present invention, the color mark sensor is selected from the sensor with signal KT5G-2N1121.

[0017] In a preferred embodiment of the present invention, the coating mechanism consists of two coating rollers symmetrically arranged.

[0018] As a preferred embodiment of the present invention, electrode rollers and traction film rollers are fixedly installed on the outer surface of the base, and multiple electrode rollers and traction film rollers are provided.

[0019] 3. Beneficial effects

[0020] Compared with the prior art, the advantages of this invention are:

[0021] (1) This solution uses a color mark sensor to read the position signal of the zebra stripe-shaped lithium film. The distance between the color mark sensor and the center of the coating mechanism is precision machined to ensure it is within ±0.05. Since the conveyor speed of the film on sides A and B is the same, and the film length from the peeling device on sides A and B to the center point of the coating mechanism remains unchanged, when the color mark sensor detects a deviation in the position of the lithium film on sides A / B, the fine-tuning mechanism is adjusted to change the film length from the peeling device on side A to the center point of the coating mechanism to achieve consistency in the position of the lithium film stripes on sides A and B. When the lithium film stripe position on side B is reached, the fine-tuning mechanism drives the corresponding roller to move to the left, shortening the film length between the peeling device and the coating mechanism on side A. Since the belt speed and the position of the peeling device remain unchanged, the time it takes for the corresponding lithium film stripe to reach the center point of the coating mechanism is shortened after the film length is shortened. Through feedback from the color mark sensor, the consistency of the lithium film stripe position on sides A and B is finally achieved. Conversely, when the lithium film stripe position on side A is detected to be ahead, the fine-tuning mechanism drives the corresponding roller to move to the right, increasing the film length between the peeling device and the coating device on side A, increasing the time it takes for the lithium film stripe on side A to reach the coating mechanism, and finally achieving consistency with the lithium film stripe position on side B.

[0022] (2) This solution can realize the functions of A-side and B-side calendering, continuous zebra stripe stripe peeling and lithium film alignment positioning in one unit, realize the device has multiple uses, strong functionality, effectively reduce processing costs, and is highly practical. Attached Figure Description

[0023] The above and other objects, features, and advantages of the invention will become clearer through a more detailed description of the preferred embodiments illustrated in the accompanying drawings. The same reference numerals denote the same parts throughout the drawings, and the drawings are not intentionally drawn to scale with actual dimensions; the focus is on illustrating the gist of the invention.

[0024] Figure 1 This is a perspective view of a zebra stripe-shaped continuous calendering and coating lithium replenishment device according to the present invention;

[0025] Figure 2 This is a front view of a zebra stripe-shaped continuous calendering and coating lithium replenishment device according to the present invention;

[0026] Figure 3This is a front view of the stripe removal device in a zebra stripe-shaped continuous calendering coating lithium replenishment device of the present invention;

[0027] Figure 4 This is a diagram showing the effect of lithium film peeling off from a zebra stripe-shaped continuous calendering and coating lithium replenishment device according to the present invention.

[0028] Explanation of the labels in the diagram:

[0029] 1. Base; 2. First worktable; 3. Second worktable; 4. Stripe peeling device; 5. A-side traction film positioning mechanism; 6. B-side traction film positioning mechanism; 7. A-side calendering roll; 8. B-side calendering roll; 9. Fine-tuning mechanism; 10. Speed ​​encoder; 11. Color mark sensor; 12. Coating mechanism; 13. Electrode unwinding drum; 14. Electrode take-up drum; 15. Electrode support roller; 16. Traction film support roller; 41. Sealing film; 42. Vacuum pressure relief port; 43. Moving roller; 44. Fixed roller; 45. Vacuum adsorption zone. Detailed Implementation

[0030] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0031] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Example:

[0034] Please see Figure 1-4A zebra-striped continuous calendering and coating lithium replenishment device includes a base 1. A first workbench 2 and a second workbench 3 are fixedly installed on the outer end face of the base 1. A stripe peeling device 4 is provided above both the first workbench 2 and the second workbench 3. An A-side traction film positioning mechanism 5 and an A-side calendering roller 7 are fixedly installed on the upper left of the base 1. A B-side traction film positioning mechanism 6 and a B-side calendering roller 8 are fixedly installed on the upper right of the base 1. The A-side traction film positioning mechanism 5 and the A-side calendering roller 7 are connected by a traction film. The B-side traction film positioning mechanism 6 and the B-side calendering roller 8 are connected by a traction film. A fine-tuning mechanism 9, a speed encoder 10, a color mark sensor 11, a coating mechanism 12, an electrode unwinding drum 13, and an electrode winding drum 14 are fixedly installed on the outer surface of the base 1. The electrode unwinding drum 13 and the electrode winding drum 14 are connected by an electrode, and the electrode passes through the coating mechanism 12.

[0035] In this embodiment, the base 1 can be used to position and fix each component. The first worktable 2 and the second worktable 3, in conjunction with the stripe peeling device 4, can ensure the peeling effect and quality. The A-side traction film positioning mechanism 5 and the B-side traction film positioning mechanism 6 can lead out the traction film and ensure that the belt speed of the A and B sides traction films is the same. The A-side calendering roller 7 and the B-side calendering roller 8 can calender the A and B sides of the traction film, thereby ensuring work efficiency. By adjusting the fine-tuning mechanism 9, the film length from the A-side lithium film peeling device to the center point of the coating mechanism 12 can be changed to achieve consistency in the position of the lithium film stripes on the A and B sides. The operation is simple and practical. The speed encoder 10 is used to provide feedback on the precise belt speed, which facilitates subsequent operation by the user. The electrode processing mechanism uses a color mark sensor 11 to read the position signal of the zebra stripe lithium film and a coating mechanism 12 to process the passing electrode sheets. Two coating rollers are connected to the same drive device and rotate in opposite directions to ensure the synchronicity of electrode processing. The electrode sheets to be processed are unwound by the electrode unwinding drum 13 and the processed electrode sheets are wound up by the electrode winding drum 14 for easy storage. Electrode support rollers 15 and traction film support rollers 16 are fixedly installed on the outer surface of the base 1, and multiple electrode support rollers 15 and traction film support rollers 16 are provided. The electrode support rollers 15 can lift the electrode sheets and the traction film support rollers 16 can lift the traction film. The actual processing effect is guaranteed by the action of the electrode support rollers 15 and traction film support rollers 16.

[0036] Specifically, there are two stripe removal devices 4, and they are of the same model and specifications. The stripe removal device 4 installed above the first workbench 2 is the A-side stripe removal device, and the stripe removal device 4 installed above the second workbench 3 is the B-side stripe removal device. The stripe removal device 4 includes a sealing film 41, a vacuum relief port 42, a moving roller 43, a fixed roller 44, and a vacuum adsorption zone 45.

[0037] In this embodiment, the incoming materials for sides A and B are continuous lithium films that have been calendered and attached to the traction film. The lithium film can be processed by setting the stripe peeling device 4. After completion, a striped lithium film with equal spacing is formed.

[0038] Specifically, the outer diameter of the fixed roller 44 is consistent with the inner diameter of the moving roller 43. The moving roller 43 is sleeved on the outer wall of the fixed roller 44 and forms a movable connection. The moving roller 43 has fifty circumferences about the center of the fixed roller 44.

[0039] In this embodiment, the fixed roller 44 can ensure the overall stability of the stripe stripping device 4. After the drive unit is turned on, it can drive the stripe striping device 4 to make a circular motion. The spacing of the moving rollers 43 is consistent, which can ensure that the stripe spacing of the processed products is equal, making it extremely practical.

[0040] Specifically, both the A-side traction film positioning mechanism 5 and the B-side traction film positioning mechanism 6 consist of a traction film unwinding drum and a drive mechanism.

[0041] In this embodiment, by setting the A-side traction film positioning mechanism 5 and the B-side traction film positioning mechanism 6, the traction film can be led out, and the conveying speed of the A-side and B-side traction films can be guaranteed to be the same. The operation is simple and highly practical.

[0042] Specifically, both the A-side calendering roll 7 and the B-side calendering roll 8 consist of two pressure rolls and are connected to an external drive unit.

[0043] In this embodiment, by setting up A-side calendering roller 7 and B-side calendering roller 8, the A-side and B-side of the traction film can be calendered, thereby ensuring work efficiency.

[0044] Specifically, the fine-tuning mechanism 9 consists of a cylinder and a telescopic rod, and the left end of the fine-tuning mechanism 9 is connected to the roller through a connecting plate. The base 1 is provided with a slide rail, the size of which is consistent with the diameter of the roller, and the roller is slidably connected to the slide rail.

[0045] In this embodiment, by adjusting the fine-tuning mechanism 9, the film length from the center point of the lithium film peeling device on side A to the coating mechanism 12 can be changed to achieve consistency in the position of lithium film stripes on sides A and B. This method is simple to operate and highly practical.

[0046] Specifically, the speed encoder 10 is an encoder with model number K76-J3V2500B30.

[0047] In this embodiment, a speed encoder 10 is set to provide feedback on the precise speed of the conveyor belt, which facilitates subsequent operations by the user and is highly practical.

[0048] Specifically, the color mark sensor 11 uses a sensor with the signal KT5G-2N1121.

[0049] In this embodiment, a color mark sensor 11 is used to read the position signal of the zebra stripe-shaped lithium film. The center distance between the color mark sensor 11 and the coating mechanism 12 is precision machined to ensure it is within ±0.05. Since the conveyor speed of the film on sides A and B is the same, and the film length from the peeling device on sides A and B to the center point of the coating mechanism 12 remains unchanged, when the color mark sensor 11 detects a deviation in the position of the lithium film on sides A / B, the fine-tuning mechanism 9 is adjusted to change the film length from the peeling device on side A to the center point of the coating mechanism 12 to achieve consistency in the position of the lithium film stripes on sides A and B. When the stripe position lags behind the lithium film stripe position on side B, the fine-tuning mechanism 9 drives the corresponding roller to move to the left, shortening the film length between the peeling device on side A and the coating mechanism 12. Since the belt speed and the position of the peeling device remain unchanged, the time for the corresponding lithium film stripe to reach the center point of the coating mechanism is shortened after the film length is shortened. Through the feedback of the color mark sensor 11, the consistency of the lithium film stripe position on sides A and B is finally achieved. Conversely, when the lithium film stripe position on side A is detected to be ahead, the fine-tuning mechanism 9 drives the corresponding roller to move to the right, increasing the film length between the peeling device on side A and the coating device, increasing the time for the lithium film stripe on side A to reach the coating mechanism, and finally achieving consistency with the lithium film stripe position on side B.

[0050] Specifically, the coating mechanism 12 consists of two coating rollers arranged symmetrically.

[0051] In this embodiment, the coating mechanism 12 can process the passing electrode sheets. The two coating rollers are connected to the same drive device and rotate in opposite directions, which can ensure the synchronicity of electrode sheet processing. The electrode sheets to be processed are unwound by the electrode unwinding drum 13, and the processed electrode sheets are wound up by the electrode winding drum 14, which is convenient for storage, has good working effect, and is highly practical.

[0052] Specifically, electrode rollers 15 and traction film rollers 16 are fixedly installed on the outer surface of the base 1, and multiple electrode rollers 15 and traction film rollers 16 are provided.

[0053] In this embodiment, the electrode sheet can be lifted by setting the electrode sheet support roller 15, and the traction film support roller 16 can be lifted by setting the traction film support roller. Under the action of the electrode sheet support roller 15 and the traction film support roller 16, the actual processing effect can be guaranteed.

[0054] Working Principle: A first workbench 2 and a second workbench 3 are fixedly installed on the outer end face of the base 1. A stripe peeling device 4 is installed above both the first workbench 2 and the second workbench 3. The cooperation between the first workbench 2 and the second workbench 3 and the stripe peeling device 4 ensures the peeling effect and quality. An A-side traction film positioning mechanism 5 and an A-side calendering roller 7 are fixedly installed on the upper left of the base 1. A B-side traction film positioning mechanism 6 and a B-side calendering roller 8 are fixedly installed on the upper right of the base 1. The A-side traction film positioning mechanism 5 and the A-side calendering roller 7 are connected by a traction film, and the B-side traction film positioning mechanism 6 and the B-side calendering roller 8 are connected by a traction film. The A-side traction film positioning mechanism 5 and the B-side traction film positioning mechanism 6 can guide the traction film out. Furthermore, it ensures that the conveyor speed of the A and B sides of the traction film is the same. By setting the A-side calendering roller 7 and the B-side calendering roller 8, the A and B sides of the traction film can be calendered, thereby ensuring work efficiency. The outer surface of the base 1 is fixedly installed with a fine adjustment mechanism 9, a speed encoder 10, a color mark sensor 11, a coating mechanism 12, an electrode unwinding drum 13, and an electrode winding drum 14. The electrode unwinding drum 13 and the electrode winding drum 14 are connected by electrode sheets, and the electrode sheets pass through the coating mechanism 12. When the material is received from the A and B sides of the coating mechanism 12, the position signal of the zebra stripe lithium film is read by the color mark sensor 11, and the precise speed of the conveyor belt is fed back by the speed encoder 10. The center distance between the color mark sensor 11 and the coating mechanism 12 is ensured to be within ±0.Within 05, since the belt speeds of the traction films on sides A and B are the same, and the film length from the peeling device to the center point of the coating mechanism 12 on sides A and B remains constant, when the color mark sensor 11 detects a deviation in the position of the lithium film corresponding to sides A / B, the fine-tuning mechanism 9 is adjusted to change the film length from the peeling device of the lithium film on side A to the center point of the coating device to achieve consistency in the position of the lithium film stripes on sides A and B. When the color mark sensor 11 detects that the position of the lithium film stripes on side A lags behind the position of the lithium film stripes on side B, the fine-tuning mechanism 9 drives the corresponding roller to move to the left, shortening the film length between the peeling device on side A and the coating mechanism 12. Since the belt speed and the position of the peeling device remain unchanged, the time for the corresponding lithium film stripes to reach the center point of the coating mechanism is shortened after the film length is shortened. Through the feedback of the color mark sensor 11, the consistency of the position of the lithium film stripes on sides A and B is finally achieved. Conversely, when the position of the lithium film stripes on side A is detected to be ahead, the fine-tuning mechanism 9 drives the corresponding roller to move to the right. The film length between the A-side peeling device and the coating device is increased, thus increasing the time for the lithium film stripes on the A-side to reach the coating mechanism, ultimately achieving consistency with the position of the lithium film stripes on the B-side. The coating mechanism 12 consists of two symmetrically arranged coating rollers. By setting the coating mechanism 12, the passing electrode sheets can be processed. The two coating rollers are externally connected to the same drive device, and the two coating rollers rotate in opposite directions, thereby ensuring the synchronicity of electrode sheet processing. The electrode sheets to be processed are unwound by the electrode sheet unwinding drum 13, and the processed electrode sheets are wound up by the electrode sheet winding drum 14 for easy storage. Electrode sheet support rollers 15 and traction film support rollers 16 are fixedly installed on the outer surface of the base 1, and multiple electrode sheet support rollers 15 and traction film support rollers 16 are provided. The electrode sheet support rollers 15 can lift the electrode sheets, and the traction film support rollers 16 can lift the traction film. Under the action of the electrode sheet support rollers 15 and traction film support rollers 16, the actual processing effect can be guaranteed.

[0055] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and its improved concept, should be covered within the scope of protection of the present invention.

Claims

1. A zebra-striped continuous calendered coated lithium replenishment device, comprising a base (1), characterized in that, A first workbench (2) and a second workbench (3) are fixedly installed on the outer end face of the base (1). A stripe peeling device (4) is provided above both the first workbench (2) and the second workbench (3). An A-side traction film positioning mechanism (5) and an A-side calendering roller (7) are fixedly installed on the upper left side of the base (1). A B-side traction film positioning mechanism (6) and a B-side calendering roller (8) are fixedly installed on the upper right side of the base (1). The A-side traction film positioning mechanism (5) and the A-side calendering roller (7) are connected by a traction film. The B-side traction film positioning mechanism (6) and the B-side calendering roller (8) are connected by a traction film. The outer surface of the base (1) is fixedly equipped with a fine adjustment mechanism (9), a color mark sensor (11), a film coating mechanism (12), an electrode unwinding drum (13), and an electrode winding drum (14). The electrode unwinding drum (13) and the electrode winding drum (14) are connected by an electrode, and the electrode passes through the film coating mechanism (12). The fine adjustment mechanism (9) consists of a cylinder and a telescopic rod, and the left end of the fine adjustment mechanism (9) is connected to the roller through a connecting plate. When the color mark sensor detects that the lithium film stripe position on side A is lagging behind the lithium film stripe position on side B, the fine-tuning mechanism drives the corresponding roller to move to the left; when it detects that the lithium film stripe position on side A is ahead, the fine-tuning mechanism drives the corresponding roller to move to the right. There are two stripe removal devices (4) with the same model and specifications. The stripe removal device (4) installed above the first workbench (2) is an A-side stripe removal device, and the stripe removal device (4) installed above the second workbench (3) is a B-side stripe removal device. The stripe removal device (4) includes a sealing film (41), a vacuum pressure relief port (42), a moving roller (43), a fixed roller (44), and a vacuum adsorption area (45). The outer diameter of the fixed roller (44) is consistent with the inner diameter of the moving roller (43). The moving roller (43) is sleeved on the outer wall of the fixed roller (44) and forms a movable connection. The moving roller (43) has fifty circumferences about the center of the fixed roller (44). The A-side traction film positioning mechanism (5) and the B-side traction film positioning mechanism (6) are both composed of a traction film unwinding drum and a driving mechanism; the A-side calendering roller (7) and the B-side calendering roller (8) are both composed of two pressure rollers and are connected to an external driving unit; the film coating mechanism (12) is composed of two film coating rollers symmetrically arranged.

2. The zebra-striped continuous calendering and coating lithium replenishment device as described in claim 1, characterized in that, A speed encoder (10) is fixedly installed on the outer surface of the base (1). A slide is provided on the base (1). The size of the slide is consistent with the diameter of the roller. The roller is slidably connected to the slide.

3. The zebra-striped continuous calendering and coating lithium replenishment device as described in claim 2, characterized in that, The speed encoder (10) is selected as model K76-J3V2500B30.

4. The zebra-striped continuous calendering and coating lithium replenishment device as described in claim 1, characterized in that, The color mark sensor (11) is a sensor with model number KT5G-2N1121.

5. The zebra-striped continuous calendering and coating lithium replenishment device as described in claim 1, characterized in that, The outer surface of the base (1) is fixedly installed with electrode rollers (15) and traction film rollers (16), and multiple electrode rollers (15) and traction film rollers (16) are provided.

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