Soft package battery cell head secondary corner folding device

Abstract

The utility model relates to battery technical field especially relates to a soft package electric core head secondary angle bending device, including the base, the base top is provided with: the rotating disc, the rotating disc top is provided with a plurality of positioning devices, and the positioning device is used for placing and fixing the soft package electric core, the angle bending device, the angle bending device is used for making the soft package electric core head form the angle bending part, the angle pressing device, the angle pressing device is used for making the angle bending part adhere to the soft package electric core head side edge, the blanking device, the blanking device is used for removing the soft package electric core from the rotating disc to the external container, and the positioning device includes the accommodation groove setting in the middle position, the positioning block setting in the both sides of accommodation groove and the drive part transmission connection with positioning block, the rotating disc sets up in the base middle position, and the angle bending device, angle pressing device, blanking device set up in the base outer periphery in proper order. The soft package electric core head secondary angle bending device of the application can automatically carry out the pre-bending and secondary angle bending of the soft package electric core head, and improves the process stability.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a secondary bending device for the head of a soft-pack battery cell. Background Technology

[0002] Soft-pack batteries are a type of battery cell that uses an aluminum-plastic composite film as its outer casing material. Compared to traditional hard-shell batteries, soft-pack batteries are lighter, more flexible in shape, and safer. In the manufacturing process of soft-pack batteries, the bend at the cell head is one of the key steps in the packaging process.

[0003] The outer layer of pouch cells typically uses an aluminum-plastic composite film as the encapsulation material. The head area requires multiple bends to form a compact, sealed structure, ensuring no electrolyte leakage and meeting the battery's mechanical strength requirements. Traditional bending processes usually involve two main steps: pre-bending and secondary bending. However, these processes often rely on manual adjustment or single-mold pressing, resulting in low efficiency and poor consistency. Especially in mass production, this can easily lead to bending angle deviations, affecting the battery's airtightness and appearance quality. Existing bending devices can automatically perform pre-bending and secondary bending of pouch cells, but they are generally only suitable for one specification of pouch cell. Utility Model Content

[0004] To address the problems mentioned above, this utility model provides a secondary bending device for the head of a pouch cell, which can automatically perform pre-bending and secondary bending, improving process stability, and is also adaptable to the processing of pouch cells of various specifications.

[0005] The solution adopted by this utility model to solve its technical problem is: a secondary bending device for the head of a soft-pack battery cell, including a base, wherein the top surface of the base is provided with: A rotating disk, the top of which is provided with several positioning devices, which are used to place and fix the soft-pack battery cells. A folding device, wherein the folding device is used to form a folded corner at the head of the pouch cell; An angle-pressing device is used to make the folded corner fit against the side of the head of the soft-pack battery cell; A feeding device for transferring soft-pack battery cells from a rotating disk to an external container; The positioning device includes a receiving groove located in the middle, positioning blocks located on both sides of the receiving groove, and a driving component that is pulsatorically connected to the positioning blocks. The rotating disk is located in the middle of the machine base, and the bending device, pressing device, and feeding device are sequentially arranged on the outer periphery of the machine base.

[0006] Furthermore, the angle-folding device includes a fixed post, the fixed post being provided with a lateral moving member and a folding blade assembly disposed on the top of the lateral moving member; The lateral moving component includes a cylinder and a pusher platform disposed on one side of the fixed column. The end of the pusher platform away from the cylinder is detachably connected to a folding platform. The cylinder is used to drive the pusher platform to perform lateral reciprocating motion.

[0007] Furthermore, the folding blade assembly includes a second cylinder fixed to the top of the fixing post. The second cylinder drives the folding blade to move up and down, so that the head of the soft-pack battery cell is bent to form a folded corner.

[0008] Furthermore, the corner pressing device includes a mounting post and a slide rail fixed to one side of the mounting post. A corner pressing component is slidably connected to the side of the slide rail away from the mounting post. A cylinder three is provided on one side of the slide rail, and the cylinder three is used to control the movement of the corner pressing component on the slide rail. The corner clamp is used to press the corner portion, so that the corner portion fits and is fastened to the head of the soft-pack battery cell.

[0009] Furthermore, the corner clamping component includes a guide rod, with grippers slidably connected to both ends of the guide rod. Each of the two grippers contains an electromagnet, which is connected to a controller. The controller is used to programmatically control the energization and de-energization of the electromagnet and the direction of its magnetic field. The upper and lower ends of the grippers are connected by springs.

[0010] Furthermore, the feeding device includes a positioning column, a rotating plate rotatably connected to the top of the positioning column, and a cylinder, a slide rail and a fixing clamp provided on the side of the rotating plate away from the positioning column. The fixing clamp is slidably connected to the bottom of the slide rail, and the cylinder is used to control the lifting and lowering movement of the slide rail.

[0011] Furthermore, a detection component is provided between the feeding device and the corner pressing device.

[0012] Furthermore, the detection component includes a camera and a display, the display being electrically connected to the camera.

[0013] In summary, the beneficial effects of this utility model are as follows: the device of this application is provided with a bending device, a positioning device and a pressing device, which can automatically perform pre-bending and secondary bending of the soft-pack battery cell, and the positioning device fixes the soft-pack battery cell through a positioning block and a driving component, and is suitable for positioning soft-pack battery cells of various widths; the device is also provided with a detection component, which can provide real-time feedback on the bending quality, further improving the stability of the process.

[0014] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this embodiment; Figure 2 for Figure 1 Enlarged view of section A; Figure 3 This is a schematic diagram of the angle-folding device; Figure 4 This is a schematic diagram of the corner pressing device; Figure 5 A schematic diagram of the structure after the head of the pouch battery is pressed with a corner.

[0016] In the diagram: 1. Base; 2. Rotating disc; 3. Folding device; 31. Fixed column; 32. Cylinder 1; 33. Push table; 34. Folding table; 35. Cylinder 2; 36. Folding knife; 4. Pressing device; 41. Mounting column; 42. Slide rail; 43. Guide rod; 44. Gripper; 5. Unloading device; 51. Positioning column; 52. Rotating plate; 53. Cylinder 4; 54. Fixed clamp; 6. Positioning device; 61. Receiving groove; 62. Positioning block; 63. Driving component; 7. Detection assembly; 71. Camera; 72. Display; 8. Folding section. Detailed Implementation

[0017] To make the content of this utility model easier to understand, the present utility model will be further described below with reference to specific embodiments and accompanying drawings.

[0018] It should be noted that the terms "center," "upper," "lower," "front," "rear," "left," "right," "inner," and "outer" used herein to indicate the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Unless otherwise stated, "a plurality of" means two or more.

[0019] Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] like Figures 1 to 4 As shown, a secondary bending device 3 for the head of a soft-pack battery cell includes a base 1. The top surface of the base 1 is provided with a rotating disk 2, a bending device 3, a pressing device 4, and a feeding device 5. The rotating disk 2 is rotatably positioned in the middle of the base 1. The bending device 3, the pressing device 4, and the feeding device 5 are sequentially fixed to the outer periphery of the base 1.

[0021] In this embodiment, the bottom of the rotating disk 2 is provided with a main shaft, and the bottom of the base 1 is provided with a control system and a servo motor. The output shaft of the servo motor is connected to the main shaft of the rotating disk through a coupling.

[0022] Specifically, such as Figure 1 As shown, five positioning devices 6 are provided on the top of the rotating disk 2. In this embodiment, the positioning device 6 includes a receiving groove 61 located in the center, positioning blocks 62 located on both sides of the receiving groove 61, and a driving component 63 that is pulsatorically connected to the positioning blocks 62. The receiving groove 61 is used to place and fix the soft-pack battery cell, and the driving component 63 is used to drive the positioning blocks 62 to a designated position. The driving component 63 can be a servo motor, a stepper motor, or a cylinder, and is connected to the positioning blocks 62 via a lead screw, rack and pinion, or belt. In this embodiment, the positioning blocks 62 integrate sensors to provide real-time position signal feedback.

[0023] In another embodiment, the positioning block 62 has a guide rail at its bottom, and the positioning block 62 is slidably connected to the guide rail. Through the above design, the guide rail directly supports the bottom of the positioning block 62, so that the gravity of the positioning block 62 is more evenly transmitted to the guide rail, reducing the lateral overturning moment.

[0024] In this embodiment, the angle-folding device 3 is used to form an angled portion 8 at the head of the pouch cell. For example... Figure 2 and Figure 3As shown, the corner-folding device 3 includes a fixed post 31, which is equipped with a lateral moving member and a folding blade 36 assembly disposed on top of the lateral moving member. The lateral moving member includes a cylinder 32 and a pusher 33 disposed on one side of the fixed post 31. The end of the pusher 33 away from the cylinder is detachably connected to a corner-folding platform 34 by a screw connection. In this embodiment, the corner-folding platform 34 is triangular or trapezoidal in shape, and the cylinder 32 is used to drive the pusher 33 to perform lateral reciprocating motion. The folding blade 36 assembly includes a cylinder 35 fixed to the top of the fixed post 31, which drives the folding blade 36 to perform lifting and lowering motion, so that the head of the soft-pack battery cell is bent to form a corner portion 8.

[0025] The operation of the corner-folding device 3 in this embodiment is as follows: Cylinder 1 32 pushes the pusher 33 forward until the corner-folding platform 34 abuts against the bottom surface of the soft-pack battery cell. Then, cylinder 2 35 drives the folding blade 36 to descend. The folding blade 36 presses against the soft-pack battery cell and bends the corners on both sides of its head downward along the edge of the corner-folding platform 34 until the corners are completely attached to the side wall of the corner-folding platform 34 and held for two to three seconds. The head of the soft-pack battery cell forms a folded part 8. Then, cylinder 2 35 drives the folding blade 36 to rise, and the rotating disk 2 continues to rotate to fold the head of the next soft-pack battery cell. The above actions are repeated.

[0026] like Figure 4 As shown, the corner pressing device 4 includes a mounting post 41 and a slide rail 42 fixed to one side of the mounting post 41. A corner pressing piece is slidably connected to the side of the slide rail 42 away from the mounting post 41. A cylinder three and a double screw mechanism are provided on one side of the slide rail 42. Through the above design, the cylinder three is used to control the opposite or reverse movement of the corner pressing piece on the slide rail 42.

[0027] The corner clamp is used to press the folded corner portion 8, causing it to fit snugly and securely to the head of the soft-pack battery cell. The corner clamp includes a guide rod 43, with grippers 44 slidably connected to both ends of the guide rod 43, allowing them to move in opposite directions along the guide rod 43. Each gripper 44 integrates an electromagnet, which is electrically connected to a controller. The controller is used to program and control the energization and de-energization of the electromagnets, as well as the direction of their magnetic field. The upper and lower ends of the grippers 44 are connected by springs.

[0028] The working process of the corner pressing device 4 in this embodiment is as follows: ①In the initial state, the corner clamps are located on both sides of the slide rail 42. The controller is powered off, the electromagnet is non-magnetic, and the upper and lower ends of the gripper 44 are in the open state under the action of spring tension. ② Adsorption and Pressing Stage: When the workpiece enters the working area of ​​the gripper 44, the cylinder drives the corner clamping parts to move towards each other, so that the two corner clamping parts move to the position of the folded part 8 of the soft-pack battery. At this time, the upper and lower ends of the gripper 44 of each corner clamping part are in an open state, with the upper end of the gripper 44 located at the top of the folded part 8 and the lower end of the gripper 44 located at the bottom of the folded part 8. Then the controller energizes the electromagnet and sets the magnetic field direction, with the upper end of the gripper 44 as the N pole and the lower end of the gripper 44 as the S pole. The upper and lower ends of the gripper 44 slide towards each other under the action of magnetic force, overcoming the spring resistance and clamping the two sides of the folded part 8, so that the folded part 8 is firmly fixed to the side of the head of the soft-pack battery.

[0029] ③Release state: After the corner part 8 is fastened to the side of the head of the soft pack battery, the controller cuts off the current, the electromagnet is demagnetized, and the upper and lower ends of the gripper 44 automatically separate under the action of the spring, completing the release of the corner part 8. Then the cylinder drives the corner pressing parts, causing the two corner pressing parts to move in opposite directions.

[0030] In this embodiment, the feeding device 5 is used to transfer the soft-pack battery cells from the rotating disk 2 to the external container. For example... Figure 1 As shown, the unloading device 5 includes a positioning post 51, with a rotating plate 52 rotatably connected to the top of the positioning post 51. A cylinder 53, a guide rail, and a fixing clamp 54 are arranged on the side of the rotating plate 52 away from the positioning post 51. The fixing clamp 54 is slidably connected to the bottom of the guide rail. The cylinder 53 controls the lifting and lowering movement of the guide rail. Furthermore, a motor-driven double lead screw mechanism is configured on the side of the guide rail. By controlling the rotational movement of the two lead screws, the clamping and releasing actions of the fixing clamps 54 on both sides are achieved.

[0031] like Figure 1 As shown, a detection component 7 is provided between the feeding device 5 and the corner pressing device 4. The detection component 7 includes a camera 71 and a display 72, with the display 72 electrically connected to the camera 71. Through this design, the corner quality can be fed back in real time, further improving process stability.

[0032] The embodiments described above are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and modifications made by those skilled in the art based on this utility model shall fall within the scope of protection of this utility model.

Claims

1. A secondary bending device (3) for the head of a soft-pack battery cell, comprising a base (1), characterized in that, The top surface of the base (1) is provided with: A rotating disk (2) is provided with several positioning devices (6) on its top. The positioning devices (6) are used to place and fix the soft-pack battery cells. The cornering device (3) is used to form a corner (8) at the head of the soft-pack battery cell. Angle pressing device (4) is used to make the corner part (8) fit against the side of the head of the soft-pack battery cell; The feeding device (5) is used to transfer the soft-pack battery cells from the rotating disk (2) to the outer container; The positioning device (6) includes a receiving groove (61) located in the middle, positioning blocks (62) located on both sides of the receiving groove (61), and a driving member (63) that is connected to the positioning blocks (62). The rotating disk (2) is located in the middle of the machine base (1), and the angle bending device (3), the angle pressing device (4), and the feeding device (5) are arranged sequentially on the outer periphery of the machine base (1).

2. The double-angle bending device (3) for the head of a soft-pack battery cell according to claim 1, characterized in that, The angle-folding device (3) includes a fixed post (31), the fixed post (31) is provided with a lateral moving part and a folding knife (36) assembly provided on the top of the lateral moving part; The lateral moving component includes a cylinder (32) and a pusher (33) disposed on one side of the fixed column (31). The end of the pusher (33) away from the cylinder is detachably connected to a folding table (34). The cylinder (32) is used to drive the pusher (33) to perform lateral reciprocating motion.

3. The secondary bending device (3) for the head of a soft-pack battery cell according to claim 2, characterized in that, The folding blade (36) assembly includes a second cylinder (35) fixed to the top of the fixed post (31). The second cylinder (35) drives the folding blade (36) to move up and down, so that the head of the soft-pack battery cell is bent to form a folded corner (8).

4. The secondary bending device (3) for the head of a soft-pack battery cell according to claim 1, characterized in that, The corner pressing device (4) includes a mounting post (41) and a slide rail (42) fixed to one side of the mounting post (41). A corner pressing piece is slidably connected to the side of the slide rail (42) away from the mounting post (41). A cylinder is provided on one side of the slide rail (42). The cylinder is used to control the movement of the corner pressing piece on the slide rail (42). The corner clamp is used to press the corner portion (8) so that the corner portion (8) fits and is fastened to the head of the soft-pack battery cell.

5. The secondary bending device (3) for the head of a soft-pack battery cell according to claim 4, characterized in that, The corner clamp includes a guide rod (43), and the two ends of the guide rod (43) are slidably connected to grippers (44). Each of the two grippers (44) is equipped with an electromagnet. The electromagnet is connected to a controller, which is used to program and control the energization and de-energization of the electromagnet and the direction of the magnetic field of the electromagnet. The upper and lower ends of the grippers (44) are connected by springs.

6. The double-angle bending device (3) for the head of a soft-pack battery cell according to claim 1, characterized in that, The feeding device (5) includes a positioning column (51), and a rotating plate (52) is rotatably connected to the top of the positioning column (51). A cylinder (53), a slide rail (42) and a fixing clamp (54) are provided on the side of the rotating plate (52) away from the positioning column (51). The fixing clamp (54) is slidably connected to the bottom of the slide rail (42). The cylinder (53) is used to control the lifting and lowering movement of the slide rail (42).

7. The double-angle bending device (3) for the head of a soft-pack battery cell according to claim 1, characterized in that, A detection component (7) is provided between the feeding device (5) and the corner pressing device (4).

8. The secondary bending device (3) for the head of a soft-pack battery cell according to claim 7, characterized in that, The detection component (7) includes a camera (71) and a display (72), the display (72) being electrically connected to the camera (71).

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