A pole piece adsorption device

Abstract

The utility model relates to lithium electricity production equipment technical field, concretely relates to a kind of pole piece adsorption device, including two groups of adsorption component being set apart along first horizontal direction;Adsorption component includes first drive component, first fixed base, negative pressure cavity and adsorption belt;Negative pressure cavity is set on first fixed base;Adsorption belt is rotatable around and set on negative pressure cavity along second horizontal direction, is rotated on negative pressure cavity by first drive component and drives it;Adsorption belt is equipped with adsorption hole;The top of negative pressure cavity is equipped with the slot with its negative pressure cavity communication;Adsorption hole is communicated with slot, for the lug area of adsorption pole piece;Second horizontal direction is perpendicular to first horizontal direction.Solved the mode of the lug of pole piece clamping transport using edge wheel, because of the fluctuation of air pressure, the hardness of the material of edge wheel will appear the problem of lug crimping, cracking phenomenon.

Description

Technical Field

[0001] This utility model relates to the field of lithium battery production equipment technology, specifically to an electrode adsorption device. Background Technology

[0002] When using double-sided simultaneous coating equipment in the lithium battery electrode manufacturing process, after coating the second side, the presence of wet coatings on both sides prevents continued support with rollers before drying in the oven. The coating die is also far from the oven, and the unstable airflow causes the electrode to vibrate, affecting the coating density and dimensions of the second side, resulting in substandard electrodes. Related technologies typically use pressure rollers to clamp the tabs on the uncoated areas of the electrode for transport; however, fluctuations in air pressure and the hardness of the pressure roller material can cause the tabs to wrinkle and crack. Utility Model Content

[0003] This invention provides an electrode adsorption device that solves the problem that the electrode tabs may wrinkle or crack due to air pressure fluctuations and the hardness of the material of the pressure rollers when using a clamping wheel to clamp and transport the electrode tabs.

[0004] In view of this, the present invention provides an electrode adsorption device, comprising two sets of adsorption components spaced apart along a first horizontal direction;

[0005] The adsorption assembly includes a first driving assembly, a first fixing base, a negative pressure chamber, and an adsorption belt; the negative pressure chamber is disposed on the first fixing base; the adsorption belt is rotatably wound around the negative pressure chamber along a second horizontal direction and is driven to rotate on the negative pressure chamber by the first driving assembly; the adsorption belt is provided with adsorption holes; the top of the negative pressure chamber is provided with a slot communicating with the negative pressure chamber; the adsorption holes communicate with the slot and are used to adsorb the tab area of ​​the electrode sheet; the second horizontal direction is perpendicular to the first horizontal direction.

[0006] Optionally, the adsorption belt is provided with a boss, and the adsorption hole is disposed on the boss.

[0007] Optionally, the slot is arranged along the second horizontal direction, and belt baffles are provided at the top of both sides of the slot; the belt baffles are fitted together with the adsorption belt.

[0008] Optionally, the adsorption assembly further includes a fan, and the negative pressure chamber of the negative pressure chamber is connected to the fan via a hose.

[0009] Optionally, the first driving assembly includes a first driving motor; both ends of the negative pressure chamber along the second horizontal direction are connected to two pulleys via side plates, and the pulleys are rotatably connected to the side plates around the first horizontal direction; the adsorption belt is wound around the two pulleys; the first driving motor is mounted on the first fixed base and is drivenly connected to one of the pulleys.

[0010] Optionally, it also includes a supporting base plate and two sets of second driving components, wherein the adsorption components are slidably connected to the supporting base plate along a first horizontal direction; the driving end of each set of second driving components is drivenly connected to a set of adsorption components to drive the adsorption components to move along the first horizontal direction.

[0011] Optionally, the second drive assembly includes a lead screw and a second drive motor; the lead screw is rotatably mounted on the support base plate along a first horizontal direction and is connected to the adsorption assembly via a nut seat; the second drive motor is driven by the lead screw and is used to drive the lead screw to rotate.

[0012] Optionally, it also includes a third drive component, which is used to be fixedly connected to an external device; the drive end of the third drive component is driven to be connected to the support base plate and is used to drive the support base plate to move in the vertical direction.

[0013] Optionally, the third drive assembly includes a second fixed base and a cylinder; the support base plate is slidably connected to the second fixed base in the vertical direction via a connecting plate; the cylinder is disposed on the second fixed base, and the cylinder shaft of the cylinder is connected to the connecting plate for driving the support base plate to move in the vertical direction.

[0014] Optionally, the cylinder shaft is connected to the connecting plate via a push rod; one end of the push rod is sleeved on the cylinder shaft via an adjusting nut, and the other end abuts against the connecting plate.

[0015] The technical solution of this utility model has the following advantages:

[0016] This invention features two sets of adsorption components. The negative pressure chamber generates negative pressure and adsorbs the tab area of ​​the electrode sheet through the adsorption holes. Simultaneously, the first driving component drives the adsorption belt to rotate and transport the electrode sheet, avoiding contact with the coating area of ​​the electrode sheet and thus preventing it from affecting the coating effect. It can be applied to electrodes coated on both sides. The adsorption belt makes surface contact with the tab area of ​​the electrode sheet, resulting in a larger contact surface. Compared with the method of using pressure rollers to clamp and transport, it does not compress the electrode sheet, avoiding wrinkling and cracking. The adsorption stability is better, which improves the stability during the transport process. The transport speed can be appropriately increased, thereby improving production efficiency. Attached Figure Description

[0017] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0018] Figure 1 A schematic diagram of the overall structure of an electrode adsorption device provided by this utility model;

[0019] Figure 2 A schematic diagram of the structure of the adsorption component provided by this utility model;

[0020] Figure 3 for Figure 2 A cross-sectional view of the adsorption assembly shown;

[0021] Figure 4 A schematic diagram of the connection between the fan and the negative pressure chamber provided by this utility model;

[0022] Figure 5 A schematic diagram of the structure of the second drive component provided by this utility model;

[0023] Figure 6 A schematic diagram of the structure of the third drive component provided by this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. First fixed seat; 2. Negative pressure chamber; 3. Adsorption belt; 4. Adsorption hole; 5. Electrode area; 6. Boss; 7. Slot; 8. Belt baffle; 9. Fan; 10. Hose; 11. First drive motor; 12. Pulley; 13. Support base plate; 14. Lead screw; 15. Second drive motor; 16. Nut seat; 17. Second fixed seat; 18. Cylinder; 19. Push rod; 20. Connecting plate; 21. Adjusting nut; 22. Coating area; 23. First guide rail; 24. First slider; 25. Second guide rail; 26. Second slider. Detailed Implementation

[0026] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the 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 this utility model and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0030] For this purpose, please refer to Figures 1 to 6 This embodiment provides an electrode adsorption device, including two sets of adsorption components spaced apart along a first horizontal direction; the adsorption components include a first driving component, a first fixing base 1, a negative pressure cavity 2, and an adsorption belt 3; the negative pressure cavity 2 is disposed on the first fixing base 1; the adsorption belt 3 is rotatably wound around the negative pressure cavity 2 along a second horizontal direction and is driven to rotate on the negative pressure cavity 2 by the first driving component; the adsorption belt 3 is provided with adsorption holes 4; the top of the negative pressure cavity 2 is provided with a slot 7 communicating with the negative pressure cavity; the adsorption holes 4 communicate with the slot 7 and are used to adsorb the tab area 5 of the electrode; the second horizontal direction is perpendicular to the first horizontal direction.

[0031] It should be noted that the negative pressure cavity 2 has a negative pressure cavity that communicates with the slot 7.

[0032] In this embodiment, two sets of adsorption components are spaced apart along the first horizontal direction. Since the negative pressure chamber is connected to the adsorption hole 4 through the slot 7, when the electrode sheet is transported, the negative pressure generated by the negative pressure chamber 2 is used to adsorb the tab area 5 of the electrode sheet through the adsorption hole 4. The adsorption belts 3 in the two sets of adsorption components adsorb the tab areas 5 on both sides of the electrode sheet in the width direction. Then, the adsorption belts 3 can be driven to rotate by the first driving component to transport the electrode sheet. The adsorption belts 3 and the tab areas 5 of the electrode sheet are connected to avoid contact with the coating area 22 of the electrode sheet, which would affect the coating effect. This method can be applied to electrode sheets coated on both sides. The adsorption belts 3 and the tab areas 5 of the electrode sheet are in contact with each other, and the contact area is large. Compared with the method of using the pressure wheel to clamp and transport, the electrode sheet will not be compressed, avoiding wrinkling and cracking. The stability during adsorption is better, which improves the stability during the transport process. The transport speed can be appropriately increased, thereby improving the production efficiency.

[0033] Specifically, the negative pressure cavities 2 on the two sets of adsorption components are arranged opposite each other to facilitate the adsorption of the two tab areas 5 on both sides of the electrode sheet.

[0034] Specifically, multiple adsorption holes 4 are provided and spaced apart along the length of the adsorption belt 3, so that the adsorption holes 4 passing through the slot 7 on the adsorption belt 3 are connected to the slot 7.

[0035] Based on the above embodiments, in a preferred embodiment, such as Figure 2 and Figure 3 As shown, the adsorption belt 3 is provided with a boss 6, and the adsorption hole 4 is provided on the boss 6.

[0036] In this embodiment, by setting a boss 6 and placing the adsorption hole 4 on the boss 6, the height of the adsorption electrode is raised by the boss 6, that is, the distance between the electrode and the adsorption component is increased, ensuring that the coating area 22 of the electrode will not come into contact with the adsorption component or other structures, thus ensuring the coating quality.

[0037] Specifically, the maximum width of the platform of the boss 6 in the first horizontal direction is less than the width of the tab region 5, so as to avoid the surface of the boss 6 from contacting the coating region 22 of the electrode.

[0038] Based on the above embodiments, in a preferred embodiment, such as Figure 2 and Figure 3 As shown, the slot 7 is set along the second horizontal direction, and belt baffles 8 are provided at the top of both sides of the slot 7; the belt baffles 8 are fitted together with the adsorption belt 3.

[0039] It should be noted that the negative pressure chamber 2 is located inside the adsorption belt 3; the position of the slot 7 corresponds to the position of the adsorption hole 4, and the area on the adsorption belt 3 corresponding to the slot 7 is the adsorption area; the adsorption hole 4 is located between the two belt baffles 8 to avoid affecting its communication with the negative pressure chamber.

[0040] In this embodiment, by setting a slot 7 on the negative pressure cavity 2 corresponding to the adsorption hole 4 of the adsorption belt 3, and by having the inner side of the adsorption belt 3 fit against the belt baffle 8 on the slot 7, the adsorption belt 3, the slot 7, and the negative pressure cavity form a more closed space, improving the sealing performance and thus increasing the suction force of the adsorption hole 4. The belt baffle 8 is also set to fit and support the adsorption belt 3, preventing the adsorption belt 3 from falling into the slot 7 under the adsorption effect, which would affect the conveying effect. During the conveying process, while the adsorption belt 3 rotates, the adsorption hole 4 in its adsorption area is always connected to the negative pressure cavity to provide adsorption force for conveying the electrode sheet.

[0041] Based on the above embodiments, in a preferred embodiment, such as Figure 1 and Figure 4 As shown, the adsorption assembly also includes a fan 9, and the negative pressure chamber of the negative pressure chamber 2 is connected to the fan 9 through a hose 10.

[0042] In this embodiment, a fan 9 is connected to the negative pressure chamber through a hose 10. The negative pressure is generated by the fan 9 drawing air, and the adsorption force can be adjusted by adjusting the output power of the fan 9 to ensure that the adsorption hole 4 can stably adsorb the tab area 5.

[0043] Based on the above embodiments, in a preferred embodiment, such as Figure 2 As shown, the first drive assembly includes a first drive motor 11; the negative pressure chamber 2 has two pulleys 12 connected to both ends of the second horizontal direction via side plates, and the pulleys 12 are rotatably connected to the side plates around the first horizontal direction; the adsorption belt 3 is wound around the two pulleys 12; the first drive motor 11 is mounted on the first fixed base 1 and is drivenly connected to one of the pulleys 12.

[0044] In this embodiment, the adsorption belt 3 is wound around the negative pressure cavity 2 by two pulleys 12, and one of the pulleys 12 is driven to rotate by the first drive motor 11, thereby driving the adsorption belt 3 to rotate around the negative pressure cavity 2, and thus transporting the electrode sheet.

[0045] Specifically, the first drive assembly also includes a coupling, through which the first drive motor 11 can be connected to the pulley 12 to further improve stability.

[0046] Based on the above embodiments, in a preferred embodiment, such as Figure 1 and Figure 5 As shown, the electrode adsorption device also includes a supporting base plate 13 and two sets of second driving components. The adsorption components are slidably connected to the supporting base plate 13 along the first horizontal direction. The driving end of each set of second driving components is drivenly connected to a set of adsorption components to drive the adsorption components to move along the first horizontal direction.

[0047] It should be noted that the two sets of second drive components are set symmetrically.

[0048] In this embodiment, two sets of adsorption components are slidably connected to the support base plate 13 along the first horizontal direction. The position of the adsorption components can be adjusted by the second driving component so that the position of the two adsorption components is aligned with the two tab areas 5 of the electrode sheet, or the distance between the two adsorption components can be adjusted to adapt to the electrode sheets of different widths and improve the applicability. When the two sets of adsorption components adsorb the tab areas 5 of the electrode sheet on both sides of the width direction, if there are wavy lines or large concave curved surfaces in the middle of the electrode sheet, the two adsorption components are adjusted to move in the first horizontal direction to tighten the electrode sheet in the width direction, so as to eliminate the wavy lines or large concave curved surfaces and improve the coating quality.

[0049] Based on the above embodiments, in a preferred embodiment, such as Figure 5 As shown, the second drive assembly includes a lead screw 14 and a second drive motor 15; the lead screw 14 is rotatably mounted on the support base plate 13 along the first horizontal direction and is connected to the adsorption assembly through a nut seat 16; the second drive motor 15 is driven by the lead screw 14 and is used to drive the lead screw 14 to rotate.

[0050] In this embodiment, the second drive motor 15 drives the lead screw 14 to rotate, thereby causing the nut seat 16 to move on the lead screw 14, thus realizing the adjustment of the adsorption component.

[0051] Specifically, ball screw 14 is used to improve stability.

[0052] Specifically, the nut seat 16 is connected to the first fixed seat 1.

[0053] Specifically, such as Figure 5 As shown, multiple first guide rails 23 are provided on the support base plate 13 along the first horizontal direction. The first fixed seat 1 is slidably connected to the first guide rails 23 through the first slider 24, which improves the stability of the adsorption component during the adjustment process.

[0054] Specifically, the two ends of the lead screw 14 are rotatably connected to the support base plate 13 through bearing support seats to improve stability.

[0055] Based on the above embodiments, in a preferred embodiment, such as Figure 1 and Figure 6 As shown, the electrode adsorption device also includes a third driving component, which is used to be fixedly connected to an external device; the driving end of the third driving component is driven to be connected to the support base plate 13, and is used to drive the support base plate 13 to move in the vertical direction.

[0056] In this embodiment, the support base plate 13 is driven to move vertically by the third driving component. In a more specific application, the vertical direction can be vertical, and the electrode passes over the adsorption component. The support base plate 13 can be driven by the third driving component to move the adsorption component upward until the adsorption hole 4 on the adsorption belt 3 contacts the electrode tab area 5 of the electrode, further improving the overall flexibility.

[0057] Based on the above embodiments, in a preferred embodiment, such as Figure 6 As shown, the third drive assembly includes a second fixed base 17 and a cylinder 18; the support base plate 13 is slidably connected to the second fixed base 17 in the vertical direction via a connecting plate 20; the cylinder 18 is disposed on the second fixed base 17, and the cylinder 18 shaft of the cylinder 18 is connected to the connecting plate 20, for driving the support base plate 13 to move in the vertical direction.

[0058] In this embodiment, the second fixed seat 17 can be fixedly connected to an external device. During operation, the connecting plate 20 can be driven by the cylinder 18 shaft of the cylinder 18 to move the support base plate 13 in the vertical direction, so that the adsorption component is close to the tab area 5 of the electrode sheet, so that the adsorption holes 4 on the adsorption belt 3 adsorb the tab area 5.

[0059] Specifically, such as Figure 6 As shown, a second guide rail 25 is provided on the second fixed base 17 along the vertical direction. The connecting plate 20 is slidably connected to the second guide rail 25 through the second slider 26, which improves the stability during the adjustment process.

[0060] Specifically, there are two sets of third drive components, which are symmetrically arranged at both ends of the support base plate 13 to improve stability.

[0061] Based on the above embodiments, in a preferred embodiment, such as Figure 6 As shown, the cylinder 18 shaft is connected to the connecting plate 20 via the push rod 19; one end of the push rod 19 is sleeved on the cylinder 18 shaft via the adjusting nut 21, and the other end is abutted or rotatably connected to the connecting plate 20.

[0062] In this embodiment, the adjustment nut 21 can be rotated to make fine adjustments along the axial direction on the cylinder 18 shaft, and then the push rod 19 can be used to make fine adjustments to the electrode in the vertical direction of the adsorption assembly, avoiding excessive adjustment range caused by direct adjustment through the cylinder 18.

[0063] The specific working principle of the electrode adsorption device provided in this embodiment is as follows: Before coating, an electrical signal is sent through the PLC program to control the second drive component to move the adsorption component from the zero position to below the electrode tab area 5. Then, the two sets of adsorption components are adjusted to move in the first horizontal direction to align with the electrode tab areas 5 on both sides of the electrode width. Then, the cylinder 18 is controlled to drive the support base plate 13 to lift the adsorption component until the adsorption holes 4 of the adsorption belt 3 are close to the electrode tab area 5 of the electrode. The lifting height can be finely adjusted to an appropriate position with the adjusting nut 21. Then, the fan 9 is started to adsorb the electrode tab area 5 onto the negative pressure belt. After the electrode tab area 5 is adsorbed by the adsorption holes 4, it is tightly attached to the adsorption belt 3. Observe the middle of the electrode. If there are wavy patterns or large... The concave curved surface allows for adjustment of the two sets of adsorption components in the width direction to tighten the electrode sheet. If the electrode sheet comes off, the frequency of the fan 9 can be adjusted to increase the adsorption force of the adsorption belt 3. When the coating machine is turned on to start coating, the first drive motor 11 drives the pulley 12 to drive the adsorption belt 3 to start rotating. The rotational linear speed of the adsorption belt 3 is the same as the coating speed. When the coating is completed and the machine is stopped, the first drive component immediately stops rotating synchronously to prevent the electrode sheet from being pulled and causing the belt to break. Then, according to the operation requirements, the adsorption component is driven to return to the zero position or remain in the original position for the next coating. This solves the problem that the electrode ear area 5 of the electrode sheet may be wrinkled or cracked due to air pressure fluctuations and the hardness of the material of the pressure wheel when using the edge-pressing wheel to clamp and transport the electrode sheet.

[0064] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An electrode adsorption device, characterized in that, Includes two sets of adsorption components spaced apart along a first horizontal direction; The adsorption assembly includes a first driving assembly, a first fixed base (1), a negative pressure chamber (2), and an adsorption belt (3); the negative pressure chamber (2) is disposed on the first fixed base (1); the adsorption belt (3) is rotatably wound around the negative pressure chamber (2) along a second horizontal direction and is driven to rotate on the negative pressure chamber (2) by the first driving assembly; the adsorption belt (3) is provided with adsorption holes (4); the top of the negative pressure chamber (2) is provided with a slot (7) communicating with the negative pressure chamber; the adsorption holes (4) are connected to the slot (7) and are used to adsorb the tab area (5) of the electrode sheet; the second horizontal direction is perpendicular to the first horizontal direction.

2. The electrode adsorption device according to claim 1, characterized in that, The adsorption belt (3) is provided with a boss (6), and the adsorption hole (4) is provided on the boss (6).

3. The electrode adsorption device according to claim 1, characterized in that, The slot (7) is arranged along the second horizontal direction, and belt baffles (8) are provided at the top of both sides of the slot (7); the belt baffles (8) are fitted to the adsorption belt (3).

4. The electrode adsorption device according to claim 1, characterized in that, The adsorption assembly also includes a fan (9), and the negative pressure chamber of the negative pressure chamber (2) is connected to the fan (9) through a hose (10).

5. The electrode adsorption device according to claim 1, characterized in that, The first driving assembly includes a first driving motor (11); the negative pressure chamber (2) has two pulleys (12) connected to both ends of the second horizontal direction via side plates, and the pulleys (12) are rotatably connected to the side plates around the first horizontal direction; the adsorption belt (3) is wound around the two pulleys (12); the first driving motor (11) is mounted on the first fixed base (1) and is drivenly connected to one of the pulleys (12).

6. The electrode adsorption device according to any one of claims 1 to 5, characterized in that, It also includes a support base plate (13) and two sets of second driving components. The adsorption components are slidably connected to the support base plate (13) along the first horizontal direction. The driving end of each set of second driving components is drivenly connected to a set of adsorption components to drive the adsorption components to move along the first horizontal direction.

7. The electrode adsorption device according to claim 6, characterized in that, The second drive assembly includes a lead screw (14) and a second drive motor (15); the lead screw (14) is rotatably mounted on the support base plate (13) along a first horizontal direction and is connected to the adsorption assembly through a nut seat (16); the second drive motor (15) is driven to drive the lead screw (14) to rotate.

8. The electrode adsorption device according to claim 6, characterized in that, It also includes a third drive component, which is used to be fixedly connected to an external device; the drive end of the third drive component is driven to be connected to the support base plate (13) and is used to drive the support base plate (13) to move in the vertical direction.

9. The electrode adsorption device according to claim 8, characterized in that, The third drive assembly includes a second fixed seat (17) and a cylinder (18); the support base plate (13) is slidably connected to the second fixed seat (17) in the vertical direction via a connecting plate (20); the cylinder (18) is disposed on the second fixed seat (17), and the cylinder (18) shaft of the cylinder (18) is connected to the connecting plate (20) for driving the support base plate (13) to move in the vertical direction.

10. The electrode adsorption device according to claim 9, characterized in that, The cylinder (18) shaft is connected to the connecting plate (20) via a push rod (19); one end of the push rod (19) is sleeved on the cylinder (18) shaft via an adjusting nut (21), and the other end abuts against the connecting plate (20).

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