Pole piece winding device and baking equipment

Abstract

The utility model discloses a pole piece winding device and baking equipment, the pole piece winding device comprises a winding roller, two wallboards and two support plates, the winding roller is provided with a connecting part, the connecting part is used for attracting a pole piece to be attached to the winding roller, two ends of the winding roller are rotatably connected to the two wallboards, and the two wallboards are connected with the two support plates. One of the wallboards is provided with a driving part used for driving the winding roller to rotate, the two supporting plates are located under the two wallboards respectively, the supporting plates are provided with lifting parts, and the lifting parts are used for driving the wallboards to ascend and descend; the pole piece baking equipment comprises the baking oven, the pole piece cutting device, the winding machine and the pole piece winding device, when the pole piece in the baking oven is abnormal or the equipment is in emergency power failure, the pole piece is cut off, and the pole piece in the baking oven is rapidly wound through the winding device, so that the safety of the baking oven equipment is ensured, and meanwhile, the influence on the quality of existing products or unprocessed foils is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery pole piece processing, in particular to a pole piece winding device and baking equipment. Background Art

[0002] In the lithium battery production process, the coating process is a key step in the production of lithium battery positive electrodes. Coating refers to the method of applying a paste polymer, molten polymer, or polymer solution to a thin film electrode to produce a composite film. After coating, the coated electrode needs to be dried to a certain degree of dryness to ensure the quality of the coated electrode and improve its service life and performance.

[0003] However, during the baking process, the coated electrodes may experience abnormal conditions such as powder loss, burning, not drying out, substandard compaction density, inconsistent solvent evaporation, and insufficient adhesion between the slurry and the foil. If the winder continues to wind after these abnormal conditions occur, the quality of the entire roll of electrodes will be affected.

[0004] In addition, when the equipment has an emergency power outage and only the UPS is supplying power, the device can complete the winding work within a limited time with a smaller load, thereby ensuring the safety of the oven equipment while avoiding affecting the quality of existing products or unprocessed foil. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology, the utility model provides a pole piece winding device and baking equipment. When an abnormal situation occurs in the pole piece in the oven or the equipment suffers an emergency power outage, the pole piece is cut off and the pole piece in the oven is quickly wound up by the winding device, thereby ensuring the safety of the oven equipment and avoiding affecting the quality of existing products or unprocessed foils.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A pole piece winding device comprises a winding roller, two wall panels and two support plates, wherein the winding roller is provided with a connecting portion, and the connecting portion is used to fix the pole piece on the winding roller, and the two ends of the winding roller are rotatably connected to the two wall panels, and one of the wall panels is provided with a driving member for driving the winding roller to rotate, the two support plates are respectively located directly below the two wall panels, and the support plates are provided with a lifting member, and the output end of the lifting member is connected to the wall panel for driving the wall panel to rise and fall.

[0008] As a further improvement of the above technical solution, the connecting part includes a negative pressure chamber arranged inside the winding roller and a plurality of adsorption holes arranged on the roller surface of the winding roller. The plurality of adsorption holes are all connected to the negative pressure chamber, and the negative pressure chamber is connected to a negative pressure device through a negative pressure tube.

[0009] As a further improvement of the above technical solution, the connecting portion includes an adhesive provided on the winding roller, and the adhesive is used for bonding the pole pieces.

[0010] As a further improvement of the above technical solution, the connecting portion includes a clamp provided on the winding roller, and the clamp is used to clamp the pole piece.

[0011] As a further improvement of the above technical solution, the driving member includes a motor, which is installed on the wall panel, and the driving shaft of the motor is connected to the end of the winding roller through a transmission mechanism, and the transmission mechanism is used to transmit the output torque of the motor to the winding roller.

[0012] As a further improvement of the above technical solution, the transmission mechanism includes a driving pulley arranged on the driving shaft of the motor, a driven pulley arranged at the end of the winding roller, and a transmission belt connected between the driving pulley and the driven pulley.

[0013] As a further improvement of the above technical solution, a first protective cover is provided on the wall panel, and the winding roller and the driving member are both located inside the first protective cover.

[0014] As a further improvement of the above technical solution, the lifting member includes a cylinder installed on the support plate, the piston rod of the cylinder is vertically upward and connected to the bottom plate of the first protective cover; a second protective cover is provided on the support plate, the cylinder is located inside the second protective cover, and the piston rod of the cylinder is provided through the top plate of the second protective cover.

[0015] As a further improvement of the above technical solution, an accordion cover is connected between the second shield and the first shield, and the piston rod of the cylinder is located inside the accordion cover.

[0016] The technical solution also adopted in the utility model is:

[0017] A pole piece baking device comprises an oven, a pole piece winding device and pole piece cutting devices arranged at the front and rear ends of the oven, wherein the pole piece winding device is located below one of the pole piece cutting devices.

[0018] The beneficial effect of the utility model is that when an abnormal situation occurs in the baked electrode or an emergency power outage occurs, the lifting member drives the winding roller to move upward, and the electrode is fixed on the winding roller under the action of the connecting part. The two electrode winding devices cut off the electrode at the same time, and the winding roller winds up the electrode in the oven. The winding device of the utility model completes the winding work with a small load within a limited time, thereby ensuring the safety of the oven equipment and avoiding affecting the quality of existing products or unprocessed foils. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0020] Figure 1 This is a schematic diagram of the assembly of the pole piece winding device in the embodiment of the present utility model;

[0021] Figure 2 yes Figure 1 The diagram below shows the first shield, second shield and accordion cover hidden on the right side.

[0022] Figure 3 This is a cross-sectional view of the pole piece winding device in the embodiment of the utility model. Figure 1 ;

[0023] Figure 4 This is a cross-sectional view of the pole piece winding device in the embodiment of the utility model. Figure 2 .

[0024] Figure numerals: 1. Winding roller; 11. Negative pressure tube; 2. Wall panel; 3. Support plate; 4. Driving member; 41. Motor; 42. Mounting seat; 43. Transmission mechanism; 431. Driving pulley; 432. Transmission belt; 433. Driven pulley; 5. First protective cover; 6. Second protective cover; 7. Organ cover; 8. Cylinder; 81. Piston rod. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the concept, specific structure and technical effects of the present invention in combination with the embodiments and drawings, so as to fully understand the purpose, characteristics and effects of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present invention. In addition, all the connection / connection relationships involved in the patent do not simply refer to the direct connection of components, but refer to the fact that a better connection structure can be formed by adding or reducing connection accessories according to the specific implementation situation. For example, the fixed connection / installation can be connected by screws, bolts and other accessories, or it can be directly connected by welding, bonding and other methods. The various technical features in the creation of the present invention can be combined interactively without conflicting with each other.

[0026] The present invention provides a pole piece baking device, comprising a baking oven, a pole piece winding device, and pole piece cutting devices arranged at the front and rear ends of the baking oven, wherein the pole piece winding device is located below one of the pole piece cutting devices. When the equipment experiences an emergency power outage or an abnormality occurs in the baking pole piece and the power is cut off, the UPS supplies power to the pole piece winding device and the pole piece cutting device. The two pole piece cutting devices simultaneously cut the pole piece, and the pole piece winding device winds up the pole piece in the baking oven, thereby ensuring the safety of the baking oven. After power is restored, the pole piece threading and splicing work is carried out, and the baking and winding work of the coated pole piece is continued, thereby ensuring the quality of the pole piece roll wound by the winding machine.

[0027] The utility model provides a specific embodiment of the pole piece winding device, referring to Figures 1-4 The pole piece winding device includes a winding roller 1, two wall panels 2 and two support plates 3. The roller surface of the winding roller 1 is provided with a connecting portion, and the connecting portion is used to fix the pole piece on the winding roller 1. The two ends of the winding roller 1 are rotatably connected to the two wall panels 2, and one of the wall panels 2 is provided with a driving member 4 for driving the winding roller 1 to rotate. The two support plates 3 are respectively located directly below the two wall panels 2. A lifting member is provided on the support plate 3, and the output end of the lifting member is connected to the wall panel 2 for driving the wall panel 2 to rise and fall.

[0028] When an abnormal situation occurs in the baked electrode or the equipment suffers an emergency power outage, the lifting member drives the winding roller 1 to move upward to the electrode position. Under the action of the connecting part, the electrode is fixed on the winding roller 1, and the electrode cutting device cuts off the electrode at both ends of the oven. The winding roller 1 winds up the electrode in the oven, so that no electrode remains in the oven, ensuring the safety of the oven while avoiding affecting the quality of existing products or unprocessed foils.

[0029] In this embodiment, referring to Figure 1 and Figure 2 The connection portion includes a negative pressure chamber disposed within the winding roller 1 and a plurality of adsorption holes disposed on the roller surface of the winding roller 1. The plurality of adsorption holes are connected to the negative pressure chamber. The negative pressure chamber is connected to a negative pressure device (not shown) via a negative pressure tube. That is, the winding roller 1 is a vacuum roller. The negative pressure device causes the negative pressure chamber to be in a negative pressure state, thereby generating a negative pressure at the adsorption holes, thereby adsorbing the electrode sheet to the roller surface of the winding roller 1, facilitating the winding of the electrode sheet.

[0030] In other embodiments, the connecting portion includes an adhesive glue provided on the winding roller 1, and the adhesive glue is used to bond the electrode. When the winding roller 1 moves upward and contacts the electrode, the electrode is adhered to the adhesive glue, thereby facilitating the winding of the electrode in the oven.

[0031] In other embodiments, the connecting portion includes a clamp provided on the winding roller 1, and the clamp is used to clamp the pole piece. When the winding roller 1 moves upward to reach the pole piece position, the clamp clamps the pole piece, and the clamp rotates with the winding roller 1 to realize the winding of the pole piece in the oven.

[0032] In this embodiment, referring to Figure 2-Figure 4 The driving member 4 includes a motor 41, which is fixedly mounted on the wall panel 2 through a mounting base 42, and the driving shaft of the motor 41 is connected to the end of the winding roller 1 through a transmission mechanism 43. The transmission mechanism 43 is used to transmit the output torque of the motor 41 to the winding roller 1, thereby driving the winding roller 1 to rotate to reel the electrode in the oven.

[0033] Specifically, the transmission mechanism 43 includes a driving pulley 431 arranged on the driving shaft of the motor 41, a driven pulley 433 arranged at the end of the winding roller 1, and a transmission belt 432 connected between the driving pulley 431 and the driven pulley 433. Torque is transmitted through belt transmission, with a simple structure and stable transmission.

[0034] In other embodiments, the transmission mechanism 43 may be a gear transmission mechanism 43 , a chain transmission mechanism 43 , or the like for transmission.

[0035] In this embodiment, referring to Figures 1-4 A first protective cover 5 is provided on the wall panel 2. The first protective cover 5 is in the shape of a rectangular box and is connected to the edge of the wall panel 2, so that the winding roller 1, the motor 41, and the transmission mechanism 43 are all located inside the first protective cover 5 to play a protective role. In addition, the bottom plate thickness of the first protective cover 5 is greater than the thickness of the other plates, which can support the wall panel 2 and the components on the wall panel 2, making the structure of the pole piece winding device more reliable.

[0036] In this embodiment, referring to Figures 1-4 The lifting member includes a cylinder 8 installed on the support plate 3. The piston rod 81 of the cylinder 8 is vertically arranged upward and connected to the bottom plate of the first protective cover 5. When the piston rod 81 of the cylinder 8 is extended, the bottom plate of the first protective cover 5 is lifted, thereby driving the wall panel 2 and the winding roller 1 to rise upward. When the piston rod 81 of the cylinder 8 is retracted, the winding roller 1 is driven down.

[0037] Further, refer to Figure 3 and Figure 4 Both support plates 3 are provided with two cylinders 8, and the four cylinders 8 operate synchronously, thereby driving the stability of the lifting and lowering of the winding roller 1.

[0038] In this embodiment, referring to Figures 1-4A second protective cover 6 is provided on the support plate 3, and the cylinder 8 is located inside the second protective cover 6. The second protective cover 6 is in the shape of a rectangular box and is connected to the edge of the support plate 3, so as to protect the cylinder 8. In addition, the top plate of the second protective cover 6 is provided with an avoidance hole, and the piston rod 81 of the cylinder 8 passes through the avoidance hole and is connected to the bottom plate of the first protective cover 5.

[0039] Furthermore, an accordion cover 7 is connected between the second protective cover 6 and the first protective cover 5, and the piston rod 81 of the cylinder 8 is located inside the accordion cover 7. The accordion cover 7 can adapt to the lifting and lowering of the first protective cover 5 and at the same time protect the piston rod 81. In addition, the accordion cover 7 can prevent foreign objects from entering the gap between the second protective cover 6 and the first protective cover 5, and at the same time avoid safety accidents such as people being trapped.

[0040] The above is a specific description of the preferred implementation of the present invention, but the invention of the present invention is not limited to the embodiments. Those skilled in the art can make various equivalent modifications or substitutions without violating the spirit of the present invention. These equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. A pole piece winding device, characterized in that: It includes a winding roller, two wall panels and two support plates. The winding roller is provided with a connecting part, and the connecting part is used to fix the pole piece on the winding roller. The two ends of the winding roller are rotatably connected to the two wall panels, and one of the wall panels is provided with a driving member for driving the winding roller to rotate. The two support plates are respectively located directly below the two wall panels. A lifting member is provided on the support plate, and the output end of the lifting member is connected to the wall panel for driving the wall panel to rise and fall.

2. The pole piece winding device according to claim 1, characterized in that: The connecting portion includes a negative pressure chamber arranged inside the winding roller and a plurality of adsorption holes arranged on the roller surface of the winding roller. The plurality of adsorption holes are all connected to the negative pressure chamber, and the negative pressure chamber is connected to a negative pressure device through a negative pressure tube.

3. The pole piece winding device according to claim 1, characterized in that: The connecting portion includes an adhesive provided on the winding roller, and the adhesive is used for bonding the pole pieces.

4. The pole piece winding device according to claim 1, characterized in that: The connecting portion includes a clamp provided on the winding roller, and the clamp is used to clamp the pole piece.

5. The pole piece winding device according to claim 1, characterized in that: The driving member includes a motor, which is installed on the wall panel, and the driving shaft of the motor is connected to the end of the winding roller through a transmission mechanism, and the transmission mechanism is used to transmit the output torque of the motor to the winding roller.

6. The pole piece winding device according to claim 5, characterized in that: The transmission mechanism includes a driving pulley arranged on the driving shaft of the motor, a driven pulley arranged at the end of the winding roller, and a transmission belt connected between the driving pulley and the driven pulley.

7. The pole piece winding device according to claim 1, characterized in that: A first protective cover is provided on the wall panel, and the end of the winding roller and the driving member are both located inside the first protective cover.

8. The pole piece winding device according to claim 7, characterized in that: The lifting member includes a cylinder installed on the support plate, the piston rod of the cylinder is vertically upward and connected to the bottom plate of the first protective cover; a second protective cover is provided on the support plate, the cylinder is located inside the second protective cover, and the piston rod of the cylinder is provided through the top plate of the second protective cover.

9. The pole piece winding device according to claim 8, characterized in that: An accordion cover is connected between the second shield and the first shield, and the piston rod of the cylinder is located inside the accordion cover.

10. A pole piece baking device, comprising a baking oven and pole piece cutting devices arranged at the front and rear ends of the baking oven, characterized in that: It also includes the pole piece winding device according to any one of claims 1 to 9, wherein the pole piece winding device is located below one of the pole piece cutting devices.

Images