Battery positive electrode tab coating device and battery positive electrode preparation system

Abstract

This application discloses an electrode coating apparatus and a battery positive electrode preparation system, including a flipping mechanism and a heating and curing mechanism. The flipping mechanism is used to clamp and flip the electrode sheet and to transport the electrode sheet to the heating and curing mechanism. The flipping mechanism includes a lifting drive source, a mounting base, a rotating clamping assembly, and a guiding assembly. The mounting base is located at the lifting end of the lifting drive source, and the rotating clamping assembly is rotatably connected to the mounting base. The clamping end of the rotating clamping assembly is used to clamp the electrode sheet. The guiding assembly is located on one side of the mounting base and is used to guide the clamping end of the rotating clamping assembly to lift and rotate when the mounting base is driven to lift by the lifting drive source, so that the electrode sheet is lifted, flipped, and the heating and curing mechanism is located in the path direction of the lifting and lowering of the clamping end of the rotating clamping assembly. The technical solution of this application only requires a lifting drive source to realize the rotation and lifting of the electrode sheet, enabling the electrode sheet to be coated on both sides while simultaneously heating and curing the slurry.

Description

Technical Field

[0001] This application relates to the field of battery cathode production technology, specifically to a battery cathode electrode coating device and a battery cathode preparation system. Background Technology

[0002] The preparation of positive electrode slurry for lithium-ion batteries requires thorough mixing of electrochemically active materials (such as lithium iron phosphate, lithium cobalt oxide, etc.), conductive agents, binders, and solvents. In recent years, to optimize performance or achieve resource utilization, some formulations introduce disodium hydrogen phosphate as a sodium supplement or use glyphosate by-product derivatives containing impurities as a low-cost filler phase.

[0003] Existing electrode coating generally requires clamping mechanisms, flipping mechanisms, and multi-directional motion mechanisms. First, the clamping mechanism holds the electrode. When the slurry is coated on one side of the electrode and it is necessary to change the coating to the other side, the flipping mechanism is activated to flip the electrode while keeping it clamped, and the slurry coating continues. After the slurry coating is completed, the multi-directional motion mechanism is used to transport the coated electrode to the heating mechanism for heating and curing of the slurry.

[0004] The electrode coating process requires the use of multiple driving mechanisms, each of which independently performs its corresponding function. Although it can achieve automated coating of the electrode with slurry, the involvement of multiple mechanisms and changes in the electrode position increases the difficulty and cost of controlling the electrode movement, which is not conducive to cost control. Utility Model Content

[0005] This application provides an electrode coating apparatus and a battery positive electrode preparation system to improve the problem that traditional coating apparatuses require more driving mechanisms, resulting in higher costs.

[0006] In a first aspect, embodiments of this application provide an electrode coating apparatus for a battery positive electrode, including a flipping mechanism and a heating and curing mechanism. The flipping mechanism is used to clamp and flip the electrode and to transport the electrode to the heating and curing mechanism, and the heating and curing mechanism is used to heat and cure the electrode coated with slurry. The flipping mechanism includes: Lifting drive source; Mounting base, located at the lifting end of the lifting drive source; A rotary clamping assembly is rotatably connected to the mounting base, and the clamping end of the rotary clamping assembly is used to clamp the electrode sheet; A guide component, located on one side of the mounting base, guides the clamping end of the rotary clamping component to move up and down and rotate when the mounting base is driven to move up and down by the lifting drive source, so that the electrode sheet moves up and down and flips. The heating and curing mechanism is located in the path direction of the lifting and lowering of the clamping end of the rotary clamping component.

[0007] In some embodiments of this application, the rotary clamping assembly includes a rotary shaft and two guide rods, the two guide rods being circumferentially spaced around the rotary shaft; As the rotating clamping assembly rises to the top of the guide assembly along with the lifting drive source, one of the two guide rods will abut against the guide assembly, causing the rotating shaft to rotate 180°.

[0008] In some embodiments of this application, the rotating clamping assembly further includes a limiting rod, which is located on the side of the mounting base away from the guide rod and is fixedly connected to the rotating shaft; the mounting base is provided with two opposing limiting posts, and when the rotating shaft rotates 180°, the limiting rod abuts against one of the limiting posts.

[0009] In some embodiments of this application, the electrode coating device for the positive electrode of the battery further includes a stabilizing arm and an elastic element. The stabilizing arm is connected to the mounting base and located below the limiting rod. One end of the elastic element is connected to the stabilizing arm, and the other end is connected to the limiting rod.

[0010] In some embodiments of this application, the guide assembly includes a guide door and a transverse slide rail, wherein the guide door is slidably disposed on the transverse slide rail; During the process of the rotating clamping assembly rising to the top of the guide assembly along with the lifting drive source, one of the two guide rods will abut against the top of the guide door, so that the rotating shaft rotates 180°. During the process of the rotating clamping assembly descending to the bottom of the guide assembly along with the lifting drive source, one of the two guide rods will abut against the bottom of the guide door, so that the guide door slides along the transverse slide rail. In one upward and downward movement, the guide rod that abuts against the top and bottom of the guide door is the same one.

[0011] In some embodiments of this application, the guide door includes a door body and two opposing limiting plates. The limiting plates are located at the top of the door body, the distance between the two guide rods is not greater than the distance between the two limiting plates, and the rotation axis is located between the two limiting plates.

[0012] In some embodiments of this application, the guide door further includes a guide block, which is disposed at the bottom of the door body, and the central axis of the guide block is located between two adjacent limiting plates; When the guide rod moves toward and contacts the guide block, the guide block moves in the opposite direction to the guide rod, so that the guide block guides the guide rod to move within the orthographic projection range of one of the limiting plates at the bottom of the door.

[0013] In some embodiments of this application, the guide block includes two guide ramps with opposite guiding directions. When one of the guide rods is located at the bottom of the door, the guide rod contacts the guide ramp. Both guide rods are located within the orthographic projection range of one of the limiting plates at the bottom of the door, and outside the orthographic projection range of the other limiting plate at the bottom of the door.

[0014] In some embodiments of this application, the electrode coating device for the positive electrode of the battery further includes a vertical slide rail, and the mounting base is slidably engaged with the vertical slide rail.

[0015] Secondly, embodiments of this application provide a battery positive electrode preparation system, including an electrode coating apparatus for a battery positive electrode as described in the first aspect.

[0016] Therefore, the embodiments of this application utilize a rotary clamping assembly and a guiding assembly, requiring only a single lifting drive source to achieve the rotation and lifting of the electrode sheet. This allows the electrode sheet to undergo double-sided coating while simultaneously being conveyed to the heating and curing mechanism for heat curing of the slurry. Specifically, firstly, the lifting drive source drives the mounting base to rise and fall, which in turn drives the rotary clamping assembly to rise and fall. The heating and curing mechanism is located along the path of the lifting and falling of the clamping end of the rotary clamping assembly, allowing the electrode sheet to be conveyed to the heating and curing mechanism under the action of the lifting drive source. Then, the guiding assembly causes the electrode sheet to rotate during the lifting and falling process, thereby flipping the electrode sheet and achieving double-sided coating. This process does not require additional rotating mechanisms, such as motors; it can still be achieved using the power of the lifting drive source in conjunction with the guiding assembly. This reduces the number of drive devices, thereby lowering the cost of the control device and reducing the difficulty of control. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of a battery cathode preparation system provided in an embodiment of this application; Figure 2This is a schematic diagram of the pulverizing mechanism in a battery cathode preparation system provided in an embodiment of this application; Figure 3 This is a partial structural schematic diagram of a stirring mechanism in a battery cathode preparation system provided in an embodiment of this application; Figure 4 This is a schematic diagram of the structure of a stirring component in a battery cathode preparation system provided in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a secondary transmission component in a battery cathode preparation system provided in an embodiment of this application; Figure 6 for Figure 5 An explosion diagram; Figure 7 This is a schematic diagram of the structure of a flipping mechanism in a battery cathode preparation system provided in an embodiment of this application, viewed from a first perspective. Figure 8 This is a schematic diagram of the structure of a flipping mechanism from a second perspective in a battery cathode preparation system provided in an embodiment of this application; Figure 9 A schematic diagram of a flipping mechanism from a third-view perspective in a battery cathode preparation system provided in this application embodiment; Figure 10 This is a schematic diagram of the flattening mechanism in a battery cathode preparation system provided in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures: 1. Stirring mechanism; 11. Stirring container; 12. Stirring motor; 13. Primary transmission assembly; 131. Driving gear; 132. Driven gear; 133. Driven rod; 134. Transmission housing; 14. Stirring assembly; 141. Stirring rod; 1411. Main stirring rod; 1412. Secondary stirring rod; 1413. Stirring blade; 142. Cleaning rod; 1421. Connecting arm; 1422. Support arm; 1423. Cleaning brush; 15. Secondary transmission assembly; 151. Fixed gear; 152. Planetary gear; 2. Crushing mechanism; 21. Crushing container; 22. Crushing motor; 23. Crushing hammer; 24. Driving connecting rod; 25. Driven connecting rod; 3. Tilting machine 31. Lifting drive source; 32. Mounting base; 321. Limiting post; 33. Rotary clamping assembly; 331. Rotating shaft; 332. Guide rod; 333. Limiting rod; 34. Guide assembly; 341. Guide door; 3411. Door body; 3412. Limiting plate; 3413. Guide block; 342. Horizontal slide rail; 4. Heating and curing mechanism; 5. Flattening mechanism; 51. Support frame; 52. First telescopic drive source; 53. Second telescopic drive source; 54. Pressure roller; 6. Stabilizing arm; 7. Elastic element; 8. Vertical slide rail; 9. Mounting frame; 91. Base plate; 911. Slide groove; 92. Middle plate; 93. Top plate; 100. Material container; 200. Electrode. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0021] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or specifying the number of technical features indicated. Therefore, features defined with "first" and "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] Please see Figures 1 to 10 This application provides a battery positive electrode preparation system, including a mounting frame 9, a battery positive electrode slurry mixing device, and a battery positive electrode coating device. Both the battery positive electrode slurry mixing device and the battery positive electrode coating device are mounted on the mounting frame 9.

[0023] The mounting frame 9 includes a top plate 93, a middle plate 92, and a bottom plate 91. The bottom plate 91, the middle plate 92, and the top plate 93 are connected from bottom to top by support beams, so that the mounting frame 9 has three installation positions at different heights. The battery positive electrode slurry mixing device is located on the top plate 93 and the middle plate 92, and the battery positive electrode coating device is located on the bottom plate 91.

[0024] Please see Figures 1 to 3 The battery positive electrode slurry mixing device includes a stirring mechanism 1, a crushing mechanism 2, and at least two material containers 100. The crushing mechanism 2 and the material containers 100 are both mounted on a top plate 93, while the stirring mechanism 1 is mounted on a middle plate 92. The stirring mechanism 1 is connected to the crushing mechanism 2 and the material containers 100 via connecting pipes. One material container 100 contains a solvent and a conductive agent, while the other material container 100 contains a binder. Active materials are added to the crushing mechanism 2 to mix these materials in the stirring mechanism 1, forming a slurry.

[0025] Please see below. Figure 1 and Figure 2 The crushing mechanism 2 includes a crushing container 21, a crushing motor 22, a crushing hammer 23, a driving connecting rod 24, a driven connecting rod 25, and a solenoid valve (not shown in the figure). A feed inlet is provided on one side of the crushing container 21. The bottom of the crushing container 21 is connected to the stirring mechanism 1 via a connecting pipe. The solenoid valve is located inside the connecting pipe and is used to open and close the connecting pipe. The crushing motor 22 is located outside the crushing container 21, and its output end extends into the crushing container 21. One end of the driving connecting rod 24 is fixedly sleeved on the output end of the crushing motor 22, and the other end is connected to the driven connecting rod 25. The end of the driven connecting rod 25 away from the driving connecting rod 24 is hinged to the top of the crushing hammer 23. The side surface of the crushing hammer 23 contacts the side wall of the crushing container 21 so that the crushing hammer 23 and the side wall of the crushing container 21 slide together.

[0026] For example, the active material, such as that formed using disodium hydrogen phosphate as a precursor, can enter the pulverizing container 21 through the feed inlet, at which time the solenoid valve is closed. Then, the pulverizing motor 22 is started, driving the active connecting rod 24 to rotate. The active connecting rod 24 drives the driven connecting rod 25 to move. Since the inner wall of the pulverizing container 21 restricts the horizontal movement of the pulverizing hammer 23 and the driven connecting rod 25 is hinged to the pulverizing hammer 23, the driven connecting rod 25 converts the rotational motion of the active connecting rod 24 into a linear up-and-down motion of the pulverizing hammer 23 along the inner wall of the pulverizing container 21, thereby hammering the active material and achieving the purpose of pulverizing the active material. After hammering for a preset time, the pulverizing motor 22 is turned off, the pulverizing hammer 23 stops working, the solenoid valve is opened, and the active material is transported to the stirring mechanism 1. At the same time, the outlets of the other two material containers 100 are also opened, and the adhesive, conductive agent, and solvent are all transported to the stirring mechanism 1 to mix with the active material and initially form a slurry.

[0027] Please see Figure 1 and Figure 3 The mixing mechanism 1 includes a mixing container 11, a mixing motor 12, a primary transmission assembly 13, a secondary transmission assembly 15, and a primary mixing assembly 14. The mixing container 11 is used to hold the mixed slurry. The mixing motor 12 is located inside the mixing container 11. The primary transmission assembly 13 is located inside the mixing container 11 and is connected to the output end of the mixing motor 12. The mixing assembly 14 is located inside the mixing container 11 and connected to the primary transmission assembly 13, so that the mixing assembly 14 rotates as the primary transmission assembly 13 rotates. The secondary transmission assembly 15 is located inside the primary transmission assembly 13 and is connected to the mixing assembly 14.

[0028] The stirring assembly 14 includes at least two stirring rods 141, and the secondary transmission assembly 15 includes a fixed gear 151 and at least two planetary gears 152. The fixed gear 151 is fixed inside the primary transmission assembly 13, and the at least two planetary gears 152 are meshed with the fixed gear 151. Each stirring rod 141 is fixedly sleeved with one planetary gear 152, and the stirring rod 141 is fixedly connected to the primary transmission assembly 13.

[0029] The technical solution provided in this embodiment utilizes the rotary clamping assembly 33 and the guiding assembly 34 in cooperation, requiring only a lifting drive source 31 to achieve the rotation and lifting of the electrode 200. This allows the electrode 200 to complete double-sided coating while simultaneously being conveyed to the heating and curing mechanism 4 for heat curing of the slurry. Specifically, firstly, the lifting drive source 31 drives the mounting base 32 to rise and fall, which in turn drives the rotary clamping assembly 33 to rise and fall. The heating and curing mechanism 4 is located along the path of the lifting and falling of the clamping end of the rotary clamping assembly 33, allowing the electrode 200 to be conveyed to the heating and curing mechanism 4 under the action of the lifting drive source 31. Then, the guiding assembly 34 causes the electrode 200 to rotate during the lifting and falling process, thereby achieving the flipping of the electrode 200 and achieving double-sided coating. This process does not require additional rotating mechanisms, such as motors; it only requires the power of the lifting drive source 31 in conjunction with the guiding assembly 34. This reduces the number of drive devices, thereby lowering the cost of the control device and reducing the difficulty of control.

[0030] It should be noted that, since both the stirring motor 12 and the primary transmission assembly 13 are located inside the stirring container 11, and the slurry is conveyed from top to bottom, some slurry may drip onto the stirring motor 12 and / or the primary transmission assembly 13, causing the stirring motor 12 and / or the primary transmission assembly 13 to malfunction. Therefore, protective covers (not shown in the figure) are provided on both the stirring motor 12 and the primary transmission assembly 13 to prevent damage to the stirring motor 12 and the primary transmission assembly 13 caused by slurry. Providing a protective cover on a mechanism is a conventional technical method in this field and will not be elaborated further here.

[0031] Further, please see Figure 5 and Figure 6 The primary transmission assembly 13 includes a driving gear 131, a driven gear 132, a driven rod 133, and a transmission housing 134. The driving gear 131 is sleeved on the output end of the stirring motor 12. The driven gear 132 meshes with the driving gear 131 and is sleeved on the driven rod 133. The driven rod 133 is fixedly connected to the transmission housing 134, so as to drive the transmission housing 134 to rotate with the stirring motor 12. The transmission housing 134 will drive the stirring rod 141 to rotate synchronously, realizing the primary mixing of the slurry. The fixed gear 151 is fixed inside the transmission housing 134. The fixed gear 151 does not rotate on its own axis. When the planetary gear 152 rotates with the transmission housing 134, it will rotate on its own axis due to the meshing of the fixed gear 151, thereby realizing the rotation of the stirring rod 141 and realizing the secondary mixing of the slurry.

[0032] Through the technical solutions of the above embodiments, at least two rotational movements with different rotation ranges and frequencies can be achieved using only one stirring motor 12, thereby increasing the diversity of rotation direction of the stirring rod 141 and the range of stirring coverage, resulting in more thorough shearing of the slurry and more uniform stirring.

[0033] Furthermore, please see Figure 3 and Figure 4 The stirring rod 141 includes a main stirring rod 1411 and a secondary stirring rod 1412. The secondary stirring rod 1412 is fixedly connected to the planetary gear 152, and the main stirring rod 1411 is connected to the end of the secondary stirring rod 1412 away from the planetary gear 152. By dividing the stirring rod 141 into two parts, it is advantageous to achieve changes in the shape of the stirring rod 141 to adapt to different slurry mixing conditions. For example, the main stirring rod 1411 and the auxiliary stirring rod 1412 have an adjustable first angle. By adjusting the first angle, the stirring angle of the main stirring rod 1411 can be adjusted. The main stirring rod 1411 and the auxiliary stirring rod 1412 can be hinged to achieve the function of adjusting the first angle. After the first angle between the main stirring rod 1411 and the auxiliary stirring rod 1412 is determined, the relative position between the main stirring rod 1411 and the auxiliary stirring rod 1412 is fixed by using screws or other fasteners to prevent changes in the first angle from affecting the normal operation of the stirring rod 141.

[0034] In some embodiments, the auxiliary stirring rod 1412 is connected to the middle of the main stirring rod 1411. This not only improves the force balance of the main stirring rod 1411 during the stirring process and avoids excessive torque at one end of the main stirring rod 1411, which could damage the stirring rod 141, but also enables stirring in both directions—towards and away from the center of rotation—using only one main stirring rod 1411.

[0035] In some embodiments, a stirring blade 1413 is provided on the side of the main stirring rod 1411 away from the secondary stirring rod 1412 to increase the contact area between the main stirring rod 1411 and the slurry, thereby improving the stirring efficiency. However, it should be noted that the area of ​​the stirring blade 1413 should not be too large, otherwise the resistance of the slurry to the main stirring rod 1411 will be too great, which may cause damage to the stirring rod 141.

[0036] In some embodiments, see Figure 4The mixing assembly 14 also includes at least two cleaning rods 142, which are spaced apart around the axis of the fixed gear 151. The cleaning ends of the cleaning rods 142 contact the side wall of the mixing container 11. The cleaning rods 142 are connected to the transmission housing 134, allowing them to rotate with the rotation of the transmission housing 134. During rotation, the cleaning ends of the cleaning rods 142 continuously scrape the inner wall of the mixing container 11 to achieve cleaning. They can also scrape the slurry adhering to the inner wall of the mixing container 11 down to the area that the mixing rods 141 can cover, reducing material waste.

[0037] Furthermore, the cleaning rod 142 includes a connecting arm 1421, a support arm 1422, and a cleaning brush 1423. The connecting arm 1421 is connected to the primary transmission assembly 13. The support arm 1422 is rotatably connected to the end of the connecting arm 1421 away from the primary transmission assembly 13. The cleaning brush 1423 is rotatably connected to the end of the support arm 1422 away from the connecting arm 1421. The side of the cleaning brush 1423 away from the support arm 1422 contacts the side wall of the mixing container 11. By rotatably connecting the support arm 1422 and the connecting arm 1421, the cleaning angle of the cleaning rod 142 can be adjusted according to actual conditions, such as the inclination angle of the inner wall of the mixing container 11, to adapt to various different mixing containers 11. Understandably, after the angle between the support arm 1422 and the connecting arm 1421 is determined, the support arm 1422 and the connecting arm 1421 need to be fixed with a fastener to prevent relative rotation between the support arm 1422 and the connecting arm 1421 during the cleaning process. For example, the support arm 1422 and the connecting arm 1421 can be connected by a hinge, and the support arm 1422 and the connecting arm 1421 can be detachably fixed by using bolts and nuts at the hinge holes. Similarly, the rotatable connection between the cleaning brush 1423 and the support arm 1422 also makes the angle of the cleaning brush 1423 adjustable, further improving the applicable working environment range of the cleaning rod 142. The rotatable connection between the cleaning brush 1423 and the support arm 1422 can also refer to the aforementioned rotatable connection between the support arm 1422 and the connecting arm 1421, and will not be repeated here.

[0038] In some embodiments, see Figure 1The electrode coating device for the positive electrode of the battery includes a flipping mechanism 3 and a heating and curing mechanism 4. The flipping mechanism 3 is used to clamp and flip the electrode 200 and to transport the electrode 200 to the heating and curing mechanism 4, which is used to heat and cure the electrode 200 coated with slurry. The flipping mechanism 3 includes a lifting drive source 31, a mounting base 32, a rotating clamping assembly 33, and a guide assembly 34. The mounting base 32 is located at the lifting end of the lifting drive source 31. The lifting drive source 31 can be a lifting cylinder, a lifting hydraulic cylinder, a lead screw, etc., and is not limited here. The rotating clamping assembly 33 is rotatably connected to the mounting base 32, and the clamping end of the rotating clamping assembly 33 is used to clamp the electrode 200. The guide component 34 is located on one side of the mounting base 32 and is used to guide the clamping end of the rotary clamping component 33 to rise and rotate when the mounting base 32 is driven to rise and fall according to the lifting drive source 31, so that the electrode 200 rises and falls and flips. The heating and curing mechanism 4 is located in the path direction of the rising and falling of the clamping end of the rotary clamping component 33.

[0039] The technical solution provided in the embodiments of the electrode coating device for the positive electrode of a battery utilizes a rotating clamping assembly 33 and a guiding assembly 34. Only a single lifting drive source 31 is needed to achieve the rotation and lifting of the electrode 200, enabling the electrode 200 to undergo double-sided coating while simultaneously being conveyed to the heating and curing mechanism 4 for heat curing of the slurry. Specifically, firstly, the lifting drive source 31 drives the mounting base 32 to rise and fall, which in turn drives the rotating clamping assembly 33 to rise and fall. The heating and curing mechanism 4 is located along the path of the lifting and falling of the clamping end of the rotating clamping assembly 33, allowing the electrode 200 to be conveyed to the heating and curing mechanism 4 under the action of the lifting drive source 31. Then, the guiding assembly 34 causes the electrode 200 to rotate during the lifting and falling process, thereby flipping the electrode 200 and achieving double-sided coating. This process does not require additional rotating mechanisms, such as motors; it only requires the power of the lifting drive source 31 in conjunction with the guiding assembly 34. This reduces the number of driving devices, thereby lowering the cost of the control device and reducing the difficulty of control.

[0040] It should be noted that the bottom of the mixing container 11 is provided with a slurry spraying device. The feed end of the slurry spraying device is connected to the mixing container 11, and the other end is directed toward the electrode 200 held on the flipping mechanism 3, so as to spray the slurry in the mixing container 11 onto the electrode 200.

[0041] In some embodiments, see Figures 7 to 9The rotating clamping assembly 33 includes a rotating shaft 331 and two guide rods 332, which can be integrally formed. The two guide rods 332 are circumferentially spaced around the rotating shaft 331. As the rotating clamping assembly 33 rises with the lifting drive source 31 to the top of the guide assembly 34, one of the guide rods 332 abuts against the guide assembly 34, causing the rotating shaft 331 to rotate 180°. For example, when the lifting drive source 31 drives the mounting base 32 to rise, the rotating clamping assembly 33 rises synchronously. When one of the guide rods 332 rises to abut against the guide assembly 34, the rotating clamping assembly 33 continues to rise. Under the force of the rise, the guide assembly 34 drives the guide rod 332 to rotate, which in turn drives the rotating shaft 331 to rotate by 180°. The end of the rotating shaft 331 is the clamping end, thereby causing the electrode 200 to rotate 180°, achieving the purpose of changing the surface. Furthermore, as the electrode 200 moves upward, it will gradually approach the slurry spraying device. Therefore, after the electrode 200 completes the face change, the height of the electrode 200 is maintained to complete the slurry spraying on that face. This series of movements can be achieved using only one lifting drive source 31, which helps to save drive costs.

[0042] In some embodiments, the rotary clamping assembly 33 further includes a limiting rod 333. The limiting rod 333 is located on the side of the mounting base 32 away from the guide rod 332 and is fixedly connected to the rotating shaft 331. The mounting base 32 is provided with two opposing limiting posts 321. When the rotating shaft 331 rotates 180°, the limiting rod 333 abuts against one of the limiting posts 321 to prevent the rotating shaft 331 from continuing to rotate under the inertia of the guide rod 332, which would cause the electrode 200 to flip too much, which would be detrimental to the spraying of the slurry.

[0043] In some embodiments, the electrode coating device for the positive electrode of the battery further includes a stabilizing arm 6 and an elastic element 7. The stabilizing arm 6 is connected to the mounting base 32 and located below the limiting rod 333. One end of the elastic element 7 is connected to the stabilizing arm 6, and the other end is connected to the limiting rod 333. The elastic element 7 can be a tension spring with a hook, which facilitates the connection of both ends of the elastic element 7 to the stabilizing arm 6 and the limiting rod 333, respectively. The elastic element 7 is always kept in a stretched state, continuously applying force to the limiting rod 333, so that the limiting rod 333 always remains in contact with the limiting post 321, thereby ensuring the stability of the rotating clamping assembly 33 during the up and down movement and preventing unnecessary rotation of the rotating shaft 331.

[0044] In some embodiments, see Figures 7 to 9The guide assembly 34 includes a guide door 341 and a transverse slide rail 342, with the guide door 341 slidably mounted on the transverse slide rail 342. As the rotating clamping assembly 33 rises to the top of the guide assembly 34 along with the lifting drive source 31, one of the two guide rods 332 will abut against the top of the guide door 341, causing the rotating shaft 331 to rotate 180°.

[0045] During the process of the rotating clamping assembly 33 descending to the bottom of the guide assembly 34 along with the lifting drive source 31, one of the two guide rods 332 will abut against the bottom of the guide door 341, so that the guide door 341 slides along the transverse slide rail 342. In one upward and downward movement, the guide rod 332 that abuts against the top and bottom of the guide door 341 is the same rod.

[0046] For example, when the lifting drive source 31 drives the guide rod 332 to move toward the limiting plate 3412, the guide rod 332 contacts the limiting plate 3412. The limiting plate 3412 will prevent the guide rod 332 from continuing to rise. However, the lifting drive source 31 does not stop the upward drive at this time, causing the guide rod 332 to rotate downward under the combined action of the upward force and the force of the limiting plate 3412. This drives the rotating shaft 331 to rotate until the rotating shaft 331 rotates 180°. At this time, the limiting rod 333 connected to the rotating shaft 331 will abut against the limiting post 321, restricting the rotating shaft 331 from continuing to rotate, thus completing the flipping of the electrode 200. After the slurry spraying device finishes spraying the slurry, the lifting drive source 31 drives the guide rod 332 to move downwards until the guide rod 332 comes into contact with the guide door 341. At this time, the guide door 341 will provide resistance to the guide rod 332. Since forces are mutual, the guide door 341 is caused to slide along the transverse slide rail 342 due to the force of the guide rod 332. The guide rod 332, due to the limiting post 321, will not drive the rotating shaft 331 to rotate, but will move along the guide slope of the guide door 341. The direction of movement of the guide rod 332 is opposite to the direction of movement of the guide door 341, causing the top of the guide door 341 and the guide rod 332 to move closer to each other in the horizontal direction. This ensures that when the guide rod 332 rises under the drive of the lifting drive source 31, the guide rod 332 can effectively come into contact with the top of the guide door 341 to complete the second flipping motion.

[0047] Furthermore, the guide door 341 includes a door body 3411 and two opposing limiting plates 3412. The limiting plates 3412 are located at the top of the door body 3411. The distance between the two guide rods 332 is no greater than the distance between the two limiting plates 3412, and the rotation shaft 331 is located between the two limiting plates 3412. This ensures that each time the limiting rod 333 moves toward the limiting plate 3412, only one guide rod 332 contacts the limiting plate 3412 and, under the action of the limiting plate 3412, drives the rotation shaft 331 to rotate, without causing the other guide rod 332 to rotate and interfere with the other limiting plate 3412.

[0048] In some embodiments, see Figures 7 to 9 The guide door 341 also includes a guide block 3413. The guide block 3413 is located at the bottom of the door body 3411, and its central axis is positioned between two adjacent limiting plates 3412. This ensures that the rotating clamping assembly 33 can abut against the guide block 3413 during descent, thus enabling the guide block 3413 to provide a guiding effect. When the guide rod 332 moves toward and contacts the guide block 3413, the guide block 3413 and the guide rod 332 move in opposite directions. This allows the guide block 3413 to guide the guide rod 332 to move within the orthographic projection range of one of the limiting plates 3412 at the bottom of the door body 3411. This ensures that during the subsequent ascent of the guide rod 332, it can abut against one of the limiting plates 3412, smoothly completing the next rotational movement and achieving the flipping of the electrode 200.

[0049] In some embodiments, the guide block 3413 includes two guide ramps with opposite guiding directions. When one of the guide rods 332 is located at the bottom of the door body 3411, the guide rod 332 contacts the guide ramp. Both guide rods 332 are located within the orthographic projection range of one of the limiting plates 3412 at the bottom of the door body 3411, and outside the orthographic projection range of the other limiting plate 3412 at the bottom of the door body 3411. Exemplarily, when the guide rod 332 moves downward to the guide ramp of the guide block 3413, the guide rod 332 will not rotate due to the limiting action of the limiting rod 333, but the downward movement continues, causing the guide rod 332 to change from a vertically descending movement path to an inclined downward movement path along the guide ramp. This movement path, in the horizontal direction, moves closer to one limiting plate 3412 and away from the other limiting plate 3412. At the same time, since the forces are mutual, the guide rod 332 will exert a reaction force on the guide block 3413, causing the guide block 3413 to move in the opposite direction to the tilt direction of the transverse slide rail 342 and the guide rod 332, further reducing the horizontal distance between one of the limiting plates 3412 and the guide rod 332. When the guide rod 332 moves to the bottom of the door body 3411, both guide rods 332 are located within the orthogonal projection range of a limiting plate 3412 at the bottom of the door body 3411, ensuring that when the guide rod 332 rises, it can abut against a limiting plate 3412 to complete the rotational movement.

[0050] In some embodiments, the electrode coating device for the positive electrode of the battery further includes a vertical slide rail 8, and the mounting base 32 is slidably engaged with the vertical slide rail 8 to improve the stability of the mounting base 32 in the lifting and lowering motion under the action of the lifting drive source 31.

[0051] In some embodiments, see Figure 10 The electrode coating apparatus for the positive electrode of the battery also includes a flattening mechanism 5. The flattening mechanism 5 is mounted on a base plate 91 and includes a support frame 51, a first telescopic drive source 52, a second telescopic drive source 53, and a pressure roller 54. The support frame 51 is mounted on the base plate 91. The first telescopic drive source 52 and the second telescopic drive source 53 are both located on top of the support frame 51. The telescopic end of the first telescopic drive source 52 is connected to the second telescopic drive source 53 to drive the second telescopic drive source 53 to move horizontally. The output end of the second telescopic drive source 53 is connected to the pressure roller 54 to drive the pressure roller 54 to move vertically. A groove 911 is also provided on the base plate 91. One side of the heat curing mechanism 4 slides along the groove 911, allowing the heat curing mechanism 4 to move along the groove 911, thus enabling it to move back and forth between the flattening mechanism 5 and the flipping mechanism 3.

[0052] The specific flattening and heating process is as follows: Please see Figure 1 and Figure 10After the slurry coating on the surface of electrode 200 is completed, the electrode 200 descends to the heating plane of the heating and curing mechanism 4 under the drive of the lifting drive source 31. However, the heating and curing mechanism 4 is not activated at this time. Then, the heating and curing mechanism 4 is pushed towards the flattening mechanism 5 by a moving mechanism (such as a telescopic rod, traction mechanism, etc., not shown in the figure) or manually. Then, the second telescopic drive source 53 is activated to move the pressure roller 54 towards the electrode 200 until it presses down on the electrode 200. At the same time as pressing down on the electrode 200, the first telescopic drive source 52 is activated to drive the pressure roller 54 to roll horizontally to flatten the slurry on the electrode 200. During or after flattening, the heating and curing mechanism 4 is activated to heat and cure the slurry, completing the preparation of the electrode 200. It should be noted that the heating and curing mechanism 4 is a conventional device in this field, such as a heating plate, which will not be described in detail here.

[0053] The basic concepts have been described above. Obviously, for those skilled in the art, the detailed disclosure above is merely illustrative and does not constitute a limitation of this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and corrections to this application. Such modifications, improvements, and corrections are suggested in this application, and therefore remain within the spirit and scope of the exemplary embodiments of this application.

[0054] Furthermore, this application uses specific terms to describe embodiments of the application. For example, "an embodiment," "one embodiment," and / or "some embodiments" refer to a particular feature, structure, or characteristic associated with at least one embodiment of the application. Therefore, it should be emphasized and noted that "an embodiment," "one embodiment," or "an alternative embodiment" mentioned twice or more in different locations in this specification do not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of the application can be appropriately combined.

[0055] Similarly, it should be noted that, in order to simplify the description of the present application and thus aid in the understanding of one or more embodiments, the foregoing description of the embodiments of the present application sometimes combines multiple features into a single embodiment, drawing, or description thereof. However, this disclosure method does not imply that the subject matter of the present application requires more features than those mentioned in the claims. In fact, the embodiments contain fewer features than all the features of the single embodiments disclosed above.

[0056] For each patent, patent application, patent application publication, and other material such as articles, books, specifications, publications, and documents referenced in this application, the entire contents of that patent application are incorporated herein by reference, except for historical application documents that are inconsistent with or conflict with the content of this application, and documents that limit the broadest scope of the claims of this application (currently or subsequently appended to this application). It should be noted that if there are any inconsistencies or conflicts between the descriptions, definitions, and / or terminology used in the supplementary materials of this application and the content of this application, the descriptions, definitions, and / or terminology used in this application shall prevail.

[0057] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A coating apparatus for a positive electrode of a battery, characterized in that, The system includes a flipping mechanism and a heat-curing mechanism. The flipping mechanism is used to clamp and flip the electrode sheet and to transport the electrode sheet to the heat-curing mechanism, which is used to heat-cur the electrode sheet coated with slurry. The flipping mechanism includes: Lifting drive source; Mounting base, located at the lifting end of the lifting drive source; A rotary clamping assembly is rotatably connected to the mounting base, and the clamping end of the rotary clamping assembly is used to clamp the electrode sheet; A guide component, located on one side of the mounting base, guides the clamping end of the rotary clamping component to move up and down and rotate when the mounting base is driven to move up and down by the lifting drive source, so that the electrode sheet moves up and down and flips. The heating and curing mechanism is located in the path direction of the lifting and lowering of the clamping end of the rotary clamping component.

2. The electrode sheet coating apparatus for a battery positive electrode according to claim 1, characterized by The rotary clamping assembly includes a rotary shaft and two guide rods, with the two guide rods circumferentially spaced around the rotary shaft; As the rotating clamping assembly rises to the top of the guide assembly along with the lifting drive source, one of the two guide rods will abut against the guide assembly, causing the rotating shaft to rotate 180°.

3. The electrode sheet coating apparatus for a battery positive electrode according to claim 2, characterized by The rotating clamping assembly also includes a limiting rod, which is located on the side of the mounting base away from the guide rod and is fixedly connected to the rotating shaft; the mounting base is provided with two opposing limiting posts, and when the rotating shaft rotates 180°, the limiting rod abuts against one of the limiting posts.

4. The electrode sheet coating apparatus for a battery positive electrode according to claim 3, characterized by The electrode coating device for the positive electrode of the battery also includes a stabilizing arm and an elastic element. The stabilizing arm is connected to the mounting base and located below the limiting rod. One end of the elastic element is connected to the stabilizing arm, and the other end is connected to the limiting rod.

5. The electrode sheet coating apparatus for a battery positive electrode according to claim 2, characterized by The guide assembly includes a guide door and a transverse slide rail, wherein the guide door is slidably disposed on the transverse slide rail; During the process of the rotating clamping assembly rising to the top of the guide assembly along with the lifting drive source, one of the two guide rods will abut against the top of the guide door, so that the rotating shaft rotates 180°. During the process of the rotating clamping assembly descending to the bottom of the guide assembly along with the lifting drive source, one of the two guide rods will abut against the bottom of the guide door, so that the guide door slides along the transverse slide rail. In one upward and downward movement, the guide rod that abuts against the top and bottom of the guide door is the same one.

6. The electrode sheet coating apparatus for a battery positive electrode according to claim 5, characterized by The guide door includes a door body and two opposing limiting plates. The limiting plates are located at the top of the door body. The distance between the two guide rods is not greater than the distance between the two limiting plates, and the rotation axis is located between the two limiting plates.

7. The electrode sheet coating apparatus for a battery positive electrode according to claim 6, characterized by The guide door also includes a guide block, which is located at the bottom of the door body, and the central axis of the guide block is located between two adjacent limiting plates; When the guide rod moves toward and contacts the guide block, the guide block moves in the opposite direction to the guide rod, so that the guide block guides the guide rod to move within the orthographic projection range of one of the limiting plates at the bottom of the door.

8. The electrode sheet coating apparatus for a battery positive electrode according to claim 7, characterized by The guide block includes two guide ramps with opposite guiding directions. When one of the guide rods is located at the bottom of the door, the guide rod contacts the guide ramp. Both guide rods are located within the orthographic projection range of one of the limiting plates at the bottom of the door, and outside the orthographic projection range of the other limiting plate at the bottom of the door.

9. The electrode sheet coating apparatus for a battery positive electrode according to claim 1, characterized by The electrode coating device for the positive electrode of the battery also includes a vertical slide rail, and the mounting base is slidably engaged with the vertical slide rail.

10. A battery cathode production system, characterized by, Includes the electrode coating apparatus for the positive electrode of a battery as described in any one of claims 1 to 9.

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