Battery cell rounding device

Abstract

The utility model relates to a battery cell rounding device which is installed on a battery cell belt conveying line and comprises a support, a material stripping assembly, a rounding clamping jaw assembly and a rounding assembly, the material stripping assembly, the rounding clamping jaw assembly and the rounding assembly are installed on the support, the material stripping assembly moves a battery cell from the battery cell belt conveying line to the rounding clamping jaw assembly, the rounding clamping jaw assembly presses the battery cell tightly, and the rounding assembly presses the battery cell. And the end part of the rounding clamping jaw assembly is pressed and fixed by the rounding assembly. The battery cell rounding device has the following advantages: the battery cell rounding device can be quickly changed, is compatible with different battery cell sizes and specifications, can realize more uniform rounding of the whole battery cell, can round the battery cell at one time, and can adjust the rounding pressure to meet the rounding pressure requirements of the battery cells of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery production, in particular to a battery cell rounding device. Background Art

[0002] In the production process of cylindrical lithium batteries, winding is a key process in the production of battery cells. Usually, the positive and negative electrodes and the separator are wound together by a winding machine to form a battery cell. Due to tension changes during the winding process, the wound battery cell will be elliptical, affecting the accuracy of the battery cell end diameter detection in subsequent processes, and causing problems such as difficulty in inserting the battery cell into the shell. Utility Model Content

[0003] The main purpose of the utility model is to provide a battery cell rounding device to solve the above technical problems, so that the battery cell is subjected to more uniform pressure during rounding, and the battery cell is rounded at one time.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A battery cell rounding device is installed on a battery cell belt conveyor line, comprising a bracket and a scraping assembly, a rounding jaw assembly and a rounding pressing assembly installed on the bracket. The scraping assembly moves the battery cell from the battery cell belt conveyor line to the rounding jaw assembly, the rounding jaw assembly presses the battery cell, and the rounding pressing assembly presses and fixes the end of the rounding jaw assembly.

[0006] As a preferred technical solution, the material scraping assembly includes a material scraping cylinder, a cylinder mounting seat, a cylinder connecting head, a material scraping guide rail, a material scraping claw structure and a material scraping movable seat. The material scraping guide rail and the cylinder mounting seat are installed on the bracket, the material scraping cylinder is installed on the cylinder mounting seat, the material scraping claw structure is installed on the material scraping movable seat, the material scraping cylinder is connected to the material scraping movable seat via the cylinder connecting head, and the material scraping cylinder drives the material scraping movable seat to move along the material scraping guide rail.

[0007] As a preferred technical solution, the claw structure includes a claw mounting plate, a front claw and a rear claw, and the front claw and the rear claw are respectively mounted on both ends of the claw mounting plate.

[0008] As a preferred technical solution, the material stripping assembly includes limit blocks, and the limit blocks are installed at both ends of the material stripping guide rail.

[0009] As a preferred technical solution, the full-circle clamp assembly includes a three-jaw cylinder, a clamp mounting plate and a full-circle clamp, the full-circle clamp is mounted on the clamp mounting plate, the clamp mounting plate is mounted on the three output ends of the three-jaw cylinder, and the three-jaw cylinder drives the three clamp mounting plates to approach the center of the three-jaw cylinder.

[0010] As a preferred technical solution, the circle pressing component includes a circle pressing cylinder, a guide rod, a linear bearing, a connecting plate, a circle pressing mounting plate and a circle pressing structure. The circle pressing cylinder and the linear bearing are installed on the bracket, one end of the guide rod is installed on the connecting plate, and the other end is installed on the circle pressing mounting plate, and the guide rod is inserted into the linear bearing. The output end of the circle pressing cylinder is connected to the connecting plate, and a feed hole for allowing the electric core to enter is provided on the circle pressing mounting plate. The circle pressing structure is arranged around the feed hole and is aligned with the full circle clamp.

[0011] As a preferred technical solution, the circle pressing structure includes a bearing mounting roller, a bearing mounting seat and a deep groove ball bearing, the deep groove ball bearing is installed at both ends of the bearing mounting roller, the bearing mounting roller is installed on the bearing mounting seat, and the bearing mounting seat is fixed on the circle pressing mounting plate.

[0012] As a preferred technical solution, a groove corresponding to the deep groove ball bearing is provided on the full-circle clamping jaw.

[0013] As a preferred technical solution, the circle pressing mounting plate is provided with a straight groove through which the front claw and the rear claw can pass, and the straight groove is connected to the feed hole.

[0014] As a preferred technical solution, a transition block for supporting the movement of the battery cell is provided on the circular pressing mounting plate.

[0015] The beneficial effects of the utility model are that the above-mentioned battery cell rounding device has the following advantages:

[0016] 1. It is compatible with different battery cell sizes and can be quickly changed. The claw mounting plate has mounting holes with different spacings, which can adjust the distance between the front claw and the rear claw to adapt to batteries of different lengths. It can also quickly disassemble and replace the full-circle claws of different diameters and lengths to adapt to batteries of different sizes.

[0017] 2. It can achieve a more uniform rounding of the battery cell as a whole. Therefore, the rounding structure is used to press the ends of the three clamping claws away from the three-claw cylinder end under the action of the rounding cylinder to compensate for the pressure at the far end of the clamping claw, which makes the pressure on the battery cell as a whole more balanced, thereby achieving a better rounding effect on the battery cell.

[0018] 3. The battery cell can be rounded at one time. Compared with the previous cylindrical battery cell rounding mechanism, which needs to clamp half of the battery cell, round the other half of the battery cell with the clamping claw, then clamp the other half, and then round the remaining half with the clamping claw, this mechanism only needs to use the claw to pull the entire battery cell through the gap between the three clamping claws into the rounding claw for one-time rounding, which improves the rounding effect of the battery cell and protects the effect of the battery cell tab flattening action.

[0019] 4. The full circle pressure can be adjusted to meet the full circle pressure requirements of batteries of different specifications. The three-claw cylinder and the rounding cylinder are equipped with a pressure regulating valve, which can adjust the full circle pressure and compensation pressure by adjusting the pressure of the cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the installation of the battery cell rounding device involved in the utility model;

[0021] Figure 2 This is a structural schematic diagram of the battery cell rounding device involved in the utility model;

[0022] Figure 3 It is a structural schematic diagram of the material stripping assembly involved in the utility model;

[0023] Figure 4 It is a structural schematic diagram of the full-circle clamping jaw assembly involved in the utility model;

[0024] Figure 5 This is a structural schematic diagram of a round pressing assembly involved in the utility model;

[0025] Figure 6 It is a structural schematic diagram of the scraping cylinder involved in the utility model when it is retracted;

[0026] Figure 7 It is a structural schematic diagram of the three-claw cylinder involved in the utility model when it is opened;

[0027] Figure 8 It is a structural schematic diagram of the round pressing cylinder involved in the utility model when it is retracted;

[0028] Fig. 9 It is a structural schematic diagram of the material stripping cylinder involved in the utility model when it is extended;

[0029] Fig.10 It is a structural schematic diagram of the three-claw cylinder involved in the utility model when it is retracted;

[0030] Fig.11 It is a structural schematic diagram of the round pressing cylinder involved in the utility model when it is extended. DETAILED DESCRIPTION

[0031] 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.

[0032] Please combine Figure 1 and Figure 2 As shown, a battery cell rounding device is installed on a battery cell belt conveyor line a, including a bracket 1 and a scraping assembly 2, a rounding jaw assembly 3 and a rounding pressing assembly 4 installed on the bracket. The scraping assembly 2 moves the battery cell b from the battery cell belt conveyor line a to the rounding jaw assembly 3, the rounding jaw assembly 3 presses the battery cell b, and the rounding pressing assembly 4 presses and fixes the end of the rounding jaw assembly 3, so that the force on the battery cell b is more uniform, thereby achieving a rounding effect on the battery cell.

[0033] like Figure 3 As shown, the material scraping assembly 2 includes a material scraping cylinder 21, a cylinder mounting seat 22, a cylinder connecting head 23, a material scraping guide rail 25, a scraping claw structure 26, a material scraping moving seat 24 and a limit block 27. The material scraping guide rail 25 and the cylinder mounting seat 22 are installed on the bracket 1, the material scraping cylinder 21 is installed on the cylinder mounting seat 22, the scraping claw structure 26 is installed on the material scraping moving seat 24, the material scraping cylinder 21 is connected to the material scraping moving seat 24 through the cylinder connecting head 23, the material scraping cylinder 21 drives the material scraping moving seat 24 to move along the material scraping guide rail 25, thereby driving the scraping claw structure 26 to move, and the limit blocks 27 are installed at both ends of the material scraping guide rail 25 for limiting In order to control the moving distance of the material-moving seat 24, the claw structure 26 includes a claw mounting plate 261, a front claw 262 and a rear claw 263. The front claw 262 and the rear claw 263 are respectively mounted on both ends of the claw mounting plate 261. The front claw 262 is used to push the battery cell into the full-circle clamping jaw assembly 3. The rear claw 263 is used to push the battery cell out of the full-circle clamping jaw assembly 3 after completing the full circle. A plurality of mounting holes are provided on the claw mounting plate 261. The front claw 262 and the rear claw 263 can adjust the distance between the front claw 262 and the rear claw 263 according to the size specifications of the battery cell b, so as to adapt to battery cells b of different sizes.

[0034] like Figure 4 As shown, the full-circle clamp assembly 3 includes a three-jaw cylinder 31, a clamp mounting plate 32 and a full-circle clamp 33. The full-circle clamp 33 is mounted on the clamp mounting plate 32. The clamp mounting plate 31 is mounted on the three output ends of the three-jaw cylinder 31. The three-jaw cylinder 31 drives the three clamp mounting plates 32 to approach the center of the three-jaw cylinder 31, so that the three full-circle clamps 33 form a circle, thereby squeezing the battery cell located between the full-circle clamps 33 into a circle. The full-circle clamps 33 of different diameters and lengths can be replaced according to the size specifications of the battery cell b, so as to adapt to battery cells b of different sizes.

[0035] like Figure 5 As shown, the round pressing assembly 4 includes a round pressing cylinder 41, a cylinder connecting piece 48, a guide rod 42, a linear bearing 43, a connecting plate 44, a round pressing mounting plate 45, a round pressing structure 46 and a transition block 47. The round pressing cylinder 41 and the linear bearing 43 are installed on the bracket 1, one end of the guide rod 42 is installed on the connecting plate 44, and the other end is installed on the round pressing mounting plate 45, and the guide rod 42 is inserted into the linear bearing 43. The output end of the round pressing cylinder 41 is connected to the cylinder connecting piece 48 is connected to the connecting plate 44, and a feed hole 451 and a straight groove 452 are provided on the pressing circle mounting plate 45. The straight groove 452 is communicated with the feed hole 451. The feed hole 451 is used to allow the power core b to enter the full circle clamping jaw assembly 3, and the straight groove 452 is used to avoid the front claw 262 and the rear claw 263 so that the front claw 262 and the rear claw 263 can directly pass through the straight groove 452. The pressing circle structure 46 is arranged around the feed hole 451 and is aligned with the full circle clamping jaw 33. The pressing structure 46 includes a bearing installation roller 462, a bearing installation seat 461 and a deep groove ball bearing 463. The deep groove ball bearing 463 is installed at both ends of the bearing installation roller 462. The bearing installation roller 462 is installed on the bearing installation seat 461. The bearing installation seat 461 is fixed on the pressing installation plate 45. The full-circle clamping jaw 33 is provided with a slot 34 corresponding to the deep groove ball bearing 463. When the three-claw cylinder 31 drives the three clamping jaws installation plates 32 to approach the center of the three-claw cylinder 31, the three full-circle clamping jaws 33 form a circle to press the battery cell b, and the pressure of the three-claw cylinder 31 is from the output end to the full-circle pressing jaw 33. The end of the claw 33 gradually decreases, and the pressing component 4 presses the end of the whole-circle pressing claw 33 through the pressing structure 46, thereby compensating for the pressure on the end of the whole-circle pressing claw 33, making the pressure on the entire battery cell more balanced, thereby achieving a better rounding effect on the battery cell, and can achieve one-time rounding. Compared with the previous cylindrical battery cell rounding mechanism, which needs to clamp half of the battery cell, round the other half of the battery cell with the clamp, then clamp the other half, and then round the remaining half with the clamp, the rounding process is simplified, the rounding efficiency and the battery cell rounding effect are improved, and the effect of the battery cell ear flattening action is protected.

[0036] like Figure 6 As shown, when the above-mentioned cell rounding device is in use, the cell belt conveyor line a moves the cell b to between the front claw 262 and the rear claw 263, and at this time the three-claw cylinder 31 is in an open state (such as Figure 7 As shown), there is a gap between the two full-circle clamps 33 located at the top for the front claw 262 and the rear claw 263 to move, and the full-circle clamp 33 located at the bottom is used to support the battery cell b moved from the material removal assembly 2, and the rounding cylinder 41 is in a retracted state (as shown Figure 8 As shown), the round pressing structure 46 does not contact the full circle clamping claw 33, and the material removal cylinder 21 drives the material removal moving seat 24 to move along the material removal guide rail 25 (as shown in FIG. Fig. 9As shown), the claw structure 26 is driven to move, so that the front claw 262 pushes the battery cell b through the feed hole 451 and is placed on the full-circle clamp 33 located below, and the three-claw cylinder 31 drives the three clamp mounting plates 32 to move toward the center of the three-claw cylinder 31 (as shown). Fig.10 As shown), the three round clamps 33 are formed into a circle, so that the battery cell between the round clamps 33 is squeezed into a circle, and the rounding cylinder 41 drives the connecting plate 44 to move (as shown). Fig.11 As shown), the guide rod 42 drives the pressing circle mounting plate 45 to move, so that the deep groove ball bearing 463 enters the slot 34, and presses the end of the full-circle pressing claw 33, thereby compensating the pressure at the end of the full-circle pressing claw 33, so that the pressure on the battery cell b as a whole is more balanced. After the full circle is completed, the stripping cylinder 21 drives the stripping moving seat 24 to move along the stripping guide rail 25 (as shown). Figure 6 As shown), the claw structure 26 is driven to move, so that the front claw 262 pushes the battery cell b through the feed hole 451 and moves to the battery cell belt conveyor line a, completing a full circle.

[0037] 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 battery cell rounding device, installed on a battery cell belt conveyor line, characterized in that: It includes a bracket and a scraping assembly, a full-circle clamping jaw assembly and a rounding assembly installed on the bracket. The scraping assembly moves the battery cell from the battery cell belt conveyor line to the full-circle clamping jaw assembly, the full-circle clamping jaw assembly presses the battery cell, and the rounding assembly presses and fixes the end of the full-circle clamping jaw assembly.

2. The cell rounding device according to claim 1, characterized in that: The material scraping assembly includes a material scraping cylinder, a cylinder mounting seat, a cylinder connecting head, a material scraping guide rail, a material scraping claw structure and a material scraping movable seat. The material scraping guide rail and the cylinder mounting seat are installed on the bracket, the material scraping cylinder is installed on the cylinder mounting seat, the material scraping claw structure is installed on the material scraping movable seat, the material scraping cylinder is connected to the material scraping movable seat via the cylinder connecting head, and the material scraping cylinder drives the material scraping movable seat to move along the material scraping guide rail.

3. The cell rounding device according to claim 2, characterized in that: The claw structure comprises a claw mounting plate, a front claw and a rear claw, wherein the front claw and the rear claw are respectively mounted on two ends of the claw mounting plate.

4. The cell rounding device according to claim 3, characterized in that: The stripping assembly comprises limit blocks, and the limit blocks are installed at both ends of the stripping guide rail.

5. The cell rounding device according to claim 3 or 4, characterized in that: The full-circle clamp assembly includes a three-jaw cylinder, a clamp mounting plate and a full-circle clamp, the full-circle clamp is mounted on the clamp mounting plate, the clamp mounting plate is mounted on the three output ends of the three-jaw cylinder, and the three-jaw cylinder drives the three clamp mounting plates to approach the center of the three-jaw cylinder.

6. The cell rounding device according to claim 5, characterized in that: The circle pressing component includes a circle pressing cylinder, a guide rod, a linear bearing, a connecting plate, a circle pressing mounting plate and a circle pressing structure. The circle pressing cylinder and the linear bearing are installed on the bracket, one end of the guide rod is installed on the connecting plate, and the other end is installed on the circle pressing mounting plate, and the guide rod is inserted into the linear bearing. The output end of the circle pressing cylinder is connected to the connecting plate, and a feed hole for allowing the electric core to enter is provided on the circle pressing mounting plate. The circle pressing structure is arranged around the feed hole and is aligned with the full circle clamp.

7. The cell rounding device according to claim 6, characterized in that: The circle pressing structure includes a bearing installation roller, a bearing installation seat and a deep groove ball bearing, the deep groove ball bearing is installed at both ends of the bearing installation roller, the bearing installation roller is installed on the bearing installation seat, and the bearing installation seat is fixed on the circle pressing installation plate.

8. The cell rounding device according to claim 7, characterized in that: The full-circle clamping jaw is provided with a clamping groove corresponding to the deep groove ball bearing.

9. The cell rounding device according to claim 6, characterized in that: The circle pressing mounting plate is provided with a straight groove through which the front claw and the rear claw can pass, and the straight groove is connected with the feed hole.

10. The cell rounding device according to claim 6, characterized in that: The round pressing mounting plate is provided with a transition block for supporting the movement of the battery core.

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