Flattening mechanism with movable lower pressing plate

Abstract

The utility model relates to a flattening mechanism with a movable lower pressing plate, which comprises a rack, an upper flattening component and a lower flattening component, the upper flattening component is mounted on the rack, the lower flattening component is arranged below the upper flattening component, and the lower flattening component comprises a lower flattening structure, a cylinder, a guide rail, a lower seat plate, a pressure sensor, a guide rod and a linear bearing. The pressure sensor and the linear bearing are installed on the lower base plate, one end of the guide rod is fixedly arranged on the lower end face of the lower flattening structure, the guide rod penetrates through the linear bearing, and the air cylinder drives the lower base plate to move along the guide rail. According to the flattening mechanism with the movable lower pressing plate, a battery cell is placed on the lower flattening assembly by taking the outer side of the lower flattening assembly as a reference, and a battery cell tab is placed on the outer side, so that the lower flattening assembly controls the lower pressing plate to move back and forth through the air cylinder according to different sizes of supplied materials, and pressure is ensured to always act on the center of the battery cell through the gravity sensor; therefore, the problem of inconsistent center-of-gravity shift when the battery cell is flattened is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a movable flattening mechanism with a lower pressing plate. Background Art

[0002] The battery cell is one of the core components of the battery, and is often wound by a battery cell winding machine. After winding, the battery cell needs to be further processed. During the processing of the battery cell, the battery cell needs to go through processes such as cutting, flattening, short circuit testing and battery cell testing.

[0003] The current flattening process is completed by using a cell flattening and scraping device, which consists of a flattening device and a scraping device. The scraping device is movably arranged on one side of the flattening device, and its working principle is: the scraping device grabs the cell and moves forward from one end of the flattening device to place it on the flattening device, then the scraping device moves back to avoid the cell flattening station, and then the flattening device flattens the cell on the cell flattening station. After the cell is flattened, the scraping device moves forward to grab the cell and remove it from the other end of the flattening device. However, the existing flattening mechanism cannot be adjusted forward and backward according to the size of the cell material, so that the flattening force cannot act on the center of the cell when the cell is flattened, resulting in inconsistent center of gravity offset when the cell is flattened, and the shape of the cell cannot be kept consistent. Utility Model Content

[0004] The main purpose of the utility model is to provide a movable flattening mechanism with a lower pressure plate to solve the above technical problems and avoid inconsistent center of gravity shift when the battery core is flattened.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A movable flattening mechanism with a lower pressure plate comprises a frame, an upper flattening assembly and a lower flattening assembly, wherein the upper flattening assembly is mounted on the frame, and the lower flattening assembly is arranged below the upper flattening assembly, and the lower flattening assembly comprises a lower flattening structure, a cylinder, a guide rail, a lower seat plate, a pressure sensor, a guide rod and a linear bearing, wherein the pressure sensor and the linear bearing are mounted on the lower seat plate, one end of the guide rod is fixed to the lower end surface of the lower flattening structure, the guide rod is inserted into the linear bearing, and the cylinder drives the lower seat plate to move along the guide rail.

[0007] As a preferred technical solution, the lower flattening structure includes a lower pressure plate, a lower mounting plate, a lower insulation pressure plate and a lower heating tube, the lower insulation pressure plate is installed between the lower pressure plate and the lower mounting plate, and the lower heating tube is installed in the lower pressure plate.

[0008] As a preferred technical solution, a lower air blowing hole and a lower air blowing joint are provided on the lower pressure plate, the lower air blowing joint is installed on the side of the lower pressure plate, and the lower air blowing hole is communicated with the lower air blowing joint.

[0009] As a preferred technical solution, the lower flattening assembly further includes a limiting structure, and the limiting structure is installed at both ends of the guide rail.

[0010] As a preferred technical solution, the upper flattening assembly includes an upper flattening drive unit, an upper flattening structure and a guide structure. The upper flattening structure is installed at the lower end of the guide structure. The upper flattening drive unit drives the guide structure to move, thereby driving the upper flattening structure to move.

[0011] As a preferred technical solution, the upper flattening structure includes an upper mounting plate, an upper insulation pressure plate, an upper pressure plate and an upper heating tube, the upper insulation pressure plate is installed between the upper mounting plate and the upper pressure plate, and the upper heating tube is installed in the upper pressure plate.

[0012] As a preferred technical solution, an upper air blowing hole and an upper air blowing joint are provided on the upper pressure plate, the upper air blowing joint is installed on the side of the upper pressure plate, and the upper air blowing hole is communicated with the upper air blowing joint.

[0013] As a preferred technical solution, the upper flattening drive unit includes a motor, a reducer, a motor mounting seat, a coupling, a support frame, a screw rod and a connecting block. The support frame is fixed on the frame, the motor mounting seat is fixed on the support frame, the motor is installed on the motor mounting seat through the reducer, the reducer is connected to the screw rod through the coupling, and the connecting block is engaged with the screw rod.

[0014] As a preferred technical solution, the guide structure includes a guide column, a guide sleeve and a connecting plate, the connecting plate is fixed to the connecting block, one end of the guide column is fixed to the connecting plate, and the other end is fixed to the upper mounting plate, the guide sleeve is installed on the frame, and the guide column is inserted into the guide sleeve.

[0015] The beneficial effects of the utility model are as follows: the above-mentioned lower pressure plate movable flattening mechanism, the battery cell is placed on the lower flattening assembly with the outer side of the lower flattening assembly as the reference, and the battery cell pole ear is placed on the outside, so that the lower flattening assembly can be controlled by the cylinder to move forward and backward according to the size of the incoming material, and the gravity sensor is used to ensure that the pressure always acts on the center of the battery cell, thereby avoiding the problem of inconsistent center of gravity offset when the battery cell is flattened. It has the characteristics of wide compatibility range, good flattening effect and simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1It is a structural schematic diagram of the movable flattening mechanism of the lower pressing plate involved in the utility model;

[0017] Figure 2 It is a structural schematic diagram of the upper flattening assembly involved in the utility model;

[0018] Figure 3 It is a structural schematic diagram of the lower flattening component involved in the utility model;

[0019] Figure 4 This is a front view of the lower flattening component involved in the utility model. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0021] like Figure 1 As shown, a movable lower pressing plate flattening mechanism comprises a frame 1, an upper flattening assembly 2 and a lower flattening assembly 3. The upper flattening assembly 2 is mounted on the frame 1, and the lower flattening assembly 3 is arranged below the upper flattening assembly 2. The lower flattening assembly 3 adjusts the position of the lower flattening assembly 3 according to the size of the battery cell, so that the upper flattening assembly 2 can be aligned with the center of the battery cell. The upper flattening assembly 2 drives the battery cell located at the lower flattening assembly 3 to be flattened.

[0022] like Figure 2As shown, the upper flattening assembly 2 includes an upper flattening drive unit 21, an upper flattening structure 23 and a guide structure 22. The upper flattening structure 23 is installed at the lower end of the guide structure 22. The upper flattening drive unit 21 drives the guide structure 22 to move, thereby driving the upper flattening structure 23 to move, thereby flattening the battery cell. The upper flattening drive unit 21 includes a motor 211, a reducer 212, a motor mounting seat 214, a coupling 213, a support frame 215, a screw rod 216 and a connecting block 217. The support frame 215 is fixed on the frame 1, and the motor mounting seat 214 is fixed on the support frame 215. The motor 211 is installed on the motor mounting seat 214 through the reducer 212. The reducer 212 is connected to the screw rod 216 through the coupling 214. The connecting block 217 is engaged with the screw rod 216. The connecting block 217 is fixed to the guide structure 22. After the motor 211 is decelerated by the reducer 212, it drives the screw rod 216 to rotate, thereby driving the connecting block 217 to move axially along the screw rod 216, so that the guide structure 22 is raised and lowered. The guide structure 22 includes a guide column 222, a guide sleeve 223 and a connecting plate 221. The connecting plate 221 is fixed to the connecting block 217. One end of the guide column 222 is fixed to the connecting plate 221, and the other end is fixed to the upper flattening structure 23. The guide sleeve 223 is installed on the frame 1, and the guide column 222 is inserted into the guide sleeve 223. The upper flattening structure 23 includes an upper mounting plate 231, an upper heat-insulating pressing plate 232, an upper pressing plate 233 and an upper heating tube 234. The upper heat-insulating pressing plate 232 is installed between the upper mounting plate 231 and the upper pressing plate 233. The upper heating tube 234 is installed in the upper pressing plate 233. The upper heating tube 234 heats the upper pressing plate 233 so that the upper pressing plate 233 performs hot pressing on the battery cell. The upper heat-insulating pressing plate 232 is used to isolate the heat emitted by the upper heating tube 234. The upper pressing plate 233 is provided with an upper blowing hole 236 and an upper blowing joint 235. The upper blowing joint 235 is installed on the side of the upper pressing plate 233. The upper blowing hole 236 is connected to the upper blowing joint 235. After the hot pressing is completed, the upper blowing head 235 is connected to the positive air pressure to blow air through the upper blowing hole 236, thereby preventing the battery cell from sticking.

[0023] Please combine Figure 3 and Figure 4As shown, the lower flattening assembly 3 includes a lower flattening structure 34, a cylinder 31, a guide rail 32, a lower seat plate 33, a pressure sensor 35, a guide rod 36, a linear bearing 37 and a limiting structure 38. The pressure sensor 35 and the linear bearing 37 are installed on the lower seat plate 33. One end of the guide rod 36 is fixed to the lower end surface of the lower flattening structure 34. The guide rod 36 is inserted into the linear bearing 37. The cylinder 31 drives the lower seat plate 33 to move along the guide rail 32. The pressure sensor 35 senses the pressure acting on the center of the battery cell to ensure that the pressure acts on the center of the battery cell during hot pressing. The limiting structure 37 is installed at both ends of the guide rail 32 to limit the moving distance of the lower seat plate 33. The lower flattening structure 34 includes a lower mounting plate 341, a lower heat insulation plate 342, a lower pressure plate 343 and a lower heating tube 344. The lower heat insulation plate 342 is installed between the lower mounting plate 341 and the lower pressure plate 343. The lower heating tube 344 is installed in the lower pressure plate 343. The lower heating tube 344 heats the lower pressure plate 343 so that the lower pressure plate 343 performs hot pressing on the battery cell. The lower heat insulation plate 342 is used to isolate the heat emitted by the lower heating tube 344. The lower pressure plate 343 is provided with a lower blowing hole (not shown in the figure) and a lower blowing joint 345. The lower blowing joint 345 is installed on the side of the lower pressure plate 343. The lower blowing hole is connected to the lower blowing joint 345. After the hot pressing is completed, the lower blowing head 345 is connected to the positive air pressure to blow air through the lower blowing hole, thereby preventing the battery cell from sticking.

[0024] Before hot pressing, the battery cell is placed on the lower flattening structure 34, and the battery cell tabs are always on the outside and based on the outside. The lower flattening assembly 3 is based on the size of the battery cell, and the cylinder 31 drives the lower seat plate 33 to move along the guide rail 32. During hot pressing, the pressure sensor 35 senses the pressure acting on the center of the battery cell. After hot pressing is completed, the upper blowing head 235 is connected to positive air pressure to blow air through the upper blowing hole 236, and the lower blowing head 345 is connected to positive air pressure to blow air through the lower blowing hole, thereby preventing the battery cell from sticking.

[0025] The above-described embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structures, features and principles described in the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A movable flattening mechanism with a lower pressing plate, characterized in that: It includes a frame, an upper flattening assembly and a lower flattening assembly, wherein the upper flattening assembly is mounted on the frame, and the lower flattening assembly is arranged below the upper flattening assembly, and the lower flattening assembly includes a lower flattening structure, a cylinder, a guide rail, a lower seat plate, a pressure sensor, a guide rod and a linear bearing, wherein the pressure sensor and the linear bearing are mounted on the lower seat plate, one end of the guide rod is fixed to the lower end surface of the lower flattening structure, the guide rod is inserted into the linear bearing, and the cylinder drives the lower seat plate to move along the guide rail.

2. The movable flattening mechanism with a lower pressing plate according to claim 1 is characterized in that: The lower flattening structure includes a lower pressing plate, a lower mounting plate, a lower heat-insulating pressing plate and a lower heating tube. The lower heat-insulating pressing plate is installed between the lower pressing plate and the lower mounting plate, and the lower heating tube is installed in the lower pressing plate.

3. The movable flattening mechanism with a lower pressing plate according to claim 2 is characterized in that: The lower pressing plate is provided with a lower blowing hole and a lower blowing joint, the lower blowing joint is installed on the side of the lower pressing plate, and the lower blowing hole is communicated with the lower blowing joint.

4. The movable flattening mechanism with a lower pressing plate according to claim 3 is characterized in that: The lower flattening assembly also includes a limiting structure, and the limiting structure is installed at both ends of the guide rail.

5. The movable flattening mechanism with a lower pressing plate according to claim 2, 3 or 4, characterized in that: The upper flattening assembly includes an upper flattening driving unit, an upper flattening structure and a guide structure. The upper flattening structure is installed at the lower end of the guide structure. The upper flattening driving unit drives the guide structure to move, thereby driving the upper flattening structure to move.

6. The movable flattening mechanism with a lower pressing plate according to claim 5, characterized in that: The upper flattening structure includes an upper mounting plate, an upper heat-insulating pressing plate, an upper pressing plate and an upper heating tube. The upper heat-insulating pressing plate is installed between the upper mounting plate and the upper pressing plate, and the upper heating tube is installed in the upper pressing plate.

7. The movable flattening mechanism with a lower pressing plate according to claim 6, characterized in that: An upper air blowing hole and an upper air blowing joint are provided on the upper pressing plate. The upper air blowing joint is installed on the side of the upper pressing plate. The upper air blowing hole is communicated with the upper air blowing joint.

8. The movable flattening mechanism with a lower pressing plate according to claim 7, characterized in that: The upper flattening drive unit includes a motor, a reducer, a motor mounting seat, a coupling, a support frame, a screw rod and a connecting block. The support frame is fixed on the frame, the motor mounting seat is fixed on the support frame, the motor is installed on the motor mounting seat through the reducer, the reducer is connected to the screw rod through the coupling, and the connecting block is engaged with the screw rod.

9. The movable flattening mechanism with a lower pressing plate according to claim 8, characterized in that: The guide structure includes a guide column, a guide sleeve and a connecting plate. The connecting plate is fixed to the connecting block. One end of the guide column is fixed to the connecting plate, and the other end is fixed to the upper mounting plate. The guide sleeve is installed on the frame, and the guide column is inserted into the guide sleeve.

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