Auxiliary device for battery cell lamination operation

Abstract

The utility model discloses an auxiliary device for battery cell lamination operation, which comprises a fixed seat, and a rotating seat capable of controllably rotating relative to the fixed seat is mounted on the fixed seat; the rotating base is in a long-strip-rod shape, and the two ends of the rotating base are provided with paws capable of rotating relative to the rotating base to be opened and closed. The gripper can be rotationally switched between a first state and a second state, in the first state, the gripper is perpendicular relative to the rotating seat, and in the second state, the gripper is parallel relative to the rotating seat; a telescopic strip capable of moving telescopically is mounted on the rotating seat and can be matched with the gripper in the second state to clamp the diaphragm. According to the diaphragm clamping device, the paws are closed firstly, and then the telescopic strips are used for clamping, so that uniform force application on the diaphragm can be realized, and the diaphragm is prevented from being wrinkled due to non-uniform force application in the clamping process.

Description

Technical Field

[0001] The utility model relates to the technical field of equipment for battery cell production, in particular to an auxiliary device for battery cell stacking operations. Background Art

[0002] Cell stacking technology is a production process for manufacturing lithium battery cells, which involves alternately stacking pole pieces and separators to form a multi-layer stacked pole core. Compared with the traditional winding process, the stacking process has a higher space utilization rate and can increase the energy density of the battery cell. In addition, the structure of the stacked battery is more stable because the expansion force of each layer is similar, which can keep the interface flat, thereby improving the safety and cycle life of the battery. The advancement of stacking technology has enabled battery companies to begin to shift from the winding process to the stacking era, demonstrating the potential and advantages of this technology in power battery manufacturing.

[0003] During the lamination process, the pole pieces need to be stacked, and a diaphragm is set between adjacent pole pieces. The diaphragm is continuous in the same battery cell. After the lamination of one battery cell is completed, the diaphragm needs to be cut off, and then the lamination operation of the next battery cell can be carried out. During this period, the end of the diaphragm is in a free state. The general practice is to use airflow to lay the end of the diaphragm, as shown in announcement number CN216213922U. This method is difficult to ensure the laying quality of the end of the diaphragm. Utility Model Content

[0004] Purpose of the invention: In order to overcome the deficiencies in the prior art, the utility model provides an auxiliary device for battery cell stacking operations, which can effectively manage the ends of the diaphragm between two stacking operations and ensure the quality of the stacking operations.

[0005] Technical solution: To achieve the above-mentioned purpose, the utility model is an auxiliary device for battery cell stacking operations, which includes a fixed seat, on which is mounted a rotating seat capable of controllably rotating relative to the fixed seat; the rotating seat is in the shape of a long rod, and at both ends of the rotating seat are mounted claws capable of rotating and opening and closing relative to the rotating seat; the claws can rotate and switch between a first state and a second state, in the first state, the claws are perpendicular to the rotating seat, and in the second state, the claws are parallel to the rotating seat; a telescopic strip capable of telescopic movement is mounted on the rotating seat, and the telescopic strip can cooperate with the claws in the second state to clamp the diaphragm.

[0006] Furthermore, a first flexible portion is fixed on the outward side of the telescopic strip.

[0007] Furthermore, in the second state, the outward side of the gripper has a second flexible portion. The first flexible portion and the second flexible portion are both silicone bags filled with sponge, so that they can play an anti-slip role while maintaining sufficient softness.

[0008] In the above structure, when the gripper is in the first state, the gripper is in the open state, the two grippers are parallel to each other, and the diaphragm can enter between the two grippers. When the gripper is in the second state, the gripper places the diaphragm between the gripper and the rotating seat, and then the telescopic bar rises to cooperate with the gripper to clamp the diaphragm, and finally the operation of cutting the diaphragm can be implemented. The rotation of the rotating seat relative to the fixed seat can realize the change of the end position of the diaphragm, so that when the next stacking operation is performed, the starting end position of the diaphragm can be lower than the stacking platform, which is convenient for the diaphragm to overlap the edge of the stacking platform.

[0009] Furthermore, cylinders designed for the grippers are respectively installed at both ends of the rotating seat, and the telescopic rods of the cylinders are connected to the corresponding grippers through connecting rods, and both ends of the connecting rods are rotatably connected to the connected parts.

[0010] Furthermore, an electric push rod is installed on the rotating seat, and the telescopic rod of the electric push rod is connected to the telescopic strip; a guide sleeve is also installed on the rotating seat; and a guide rod is installed on the telescopic strip, which is perpendicular to the telescopic strip and slidably cooperates with the guide sleeve.

[0011] The telescopic rod of the electric push rod can move telescopically to make the telescopic bar slide smoothly relative to the rotating seat, thereby clamping and releasing the diaphragm.

[0012] Furthermore, the rotating seat is a shell structure, which has a top plate, left and right side plates and a rear plate. The electric push rod and the guide sleeve are both installed on the rear plate. The top plate is provided with a long hole for the telescopic strip to extend and retract.

[0013] Furthermore, the cross section of the telescopic strip is T-shaped, and it has a plate body parallel to the top plate, and a clamping part that can slide in the long strip hole; the electric push rod and the guide rod are both connected to the plate body. The plate body can not only facilitate the connection of components, but also play a stop role to prevent the telescopic strip from extending outwards.

[0014] Furthermore, the fixed seat is a U-shaped structure with two mounting ears, the two mounting ears are connected to the rotating seat, and each mounting ear is equipped with a driving motor, which can drive the rotating seat to rotate relative to the fixed seat.

[0015] Furthermore, the driving motor and the mounting ears are both placed on the inner side of the rotating seat.

[0016] Beneficial effects: The auxiliary device for battery cell stacking of the utility model has the following beneficial effects:

[0017] (1) By closing the grippers first and then clamping with the telescopic strip, uniform force can be applied to the diaphragm, preventing the diaphragm from wrinkling due to uneven force during the clamping process.

[0018] (2) The end of the diaphragm can be effectively managed during two adjacent lamination operations, so that at the beginning of each lamination operation, the end of the diaphragm is ensured to be spread flat on the end of the lamination platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 A three-dimensional diagram of the auxiliary device for battery cell stacking operation when the gripper is in a first state;

[0020] Figure 2 It is a front view structural diagram of the auxiliary device used for battery cell stacking operation when the gripper is in the first state;

[0021] Figure 3 It is a front view structural diagram of the auxiliary device used for battery cell stacking operation when the gripper is in the second state;

[0022] Figure 4 It is an application scenario diagram of the auxiliary device;

[0023] Figure 5 A state diagram of the auxiliary device auxiliary diaphragm release device overlapping the edge of the diaphragm to the edge of the lamination table.

[0024] In the figure: 1-fixed seat; 11-mounting ear; 2-rotating seat; 21-top plate; 22-side plate; 23-rear plate; 3-claw; 4-telescopic strip; 41-plate body; 42-clamping part; 5-cylinder; 6-connecting rod; 7-electric push rod; 8-guide sleeve; 9-guide rod; 10-driving motor. DETAILED DESCRIPTION

[0025] The utility model is further described below in conjunction with the accompanying drawings.

[0026] like Figure 1 The auxiliary device for battery cell stacking operation shown in the figure comprises a fixed seat 1, on which a rotating seat 2 capable of controllably rotating relative to the fixed seat 1 is mounted; the rotating seat 2 is in the shape of a long bar, and both ends of the rotating seat 2 are equipped with grippers 3 capable of rotating and opening relative to the rotating seat 2; the grippers 3 can be rotated and switched between a first state and a second state. In the first state, as shown in FIG. Figure 1-2 As shown, the gripper 3 is perpendicular to the rotating seat 2. In the second state, Figure 3 As shown, the gripper 3 is parallel to the rotating seat 2; a telescopic strip 4 capable of telescopic movement is installed on the rotating seat 2, and the telescopic strip 4 can cooperate with the gripper 3 in the second state to clamp the diaphragm.

[0027] The first flexible portion is fixed on the outward side of the telescopic strip 4. In the second state, the outward side of the gripper 3 has a second flexible portion. Both the first flexible portion and the second flexible portion are silicone bags filled with sponge, so that they can play an anti-slip role while maintaining sufficient softness.

[0028] When the gripper 3 is in the first state, the gripper 3 is in the open state, the two grippers 3 are parallel to each other, and the diaphragm can enter between the two grippers 3. When the gripper 3 is in the second state, the gripper 3 places the diaphragm between the gripper 3 and the rotating seat 2, and then the telescopic bar 4 rises to cooperate with the gripper 3 to clamp the diaphragm, and finally the operation of cutting the diaphragm can be implemented. The rotation of the rotating seat 2 relative to the fixed seat 1 can realize the change of the end position of the diaphragm, so that when the next stacking operation is performed, the starting end position of the diaphragm can be lower than the stacking platform, which is convenient for the diaphragm to overlap the edge of the stacking platform.

[0029] In the above structure, by first closing the claws 3 and then clamping with the telescopic strips 4, uniform force can be applied to the diaphragm, preventing the diaphragm from wrinkling due to uneven force application during the clamping process.

[0030] The auxiliary device of the utility model can effectively manage the end of the diaphragm during two adjacent lamination operations, so as to ensure that the end of the diaphragm is spread flat on the end of the lamination platform at the beginning of each lamination operation.

[0031] Cylinders 5 for the grippers 3 are respectively installed at both ends of the rotating seat 2. The telescopic rod of the cylinder 5 is connected to the corresponding grippers 3 through a connecting rod 6. Both ends of the connecting rod 6 are rotatably connected to the connected parts.

[0032] The rotating seat 2 is provided with an electric push rod 7, the telescopic rod of which is connected to the telescopic strip 4; the rotating seat 2 is also provided with a guide sleeve 8; the telescopic strip 4 is provided with a guide rod 9 which is perpendicular thereto and slidably cooperates with the guide sleeve 8. The telescopic rod of the electric push rod 7 can make the telescopic strip 4 slide smoothly relative to the rotating seat 2, thereby clamping and releasing the diaphragm.

[0033] Specifically, the rotating seat 2 is a shell structure, which has a top plate 21, two left and right side plates 22 and a rear plate 23. The electric push rod 7 and the guide sleeve 8 are both installed on the rear plate 23. The top plate 21 is provided with a long hole for the telescopic strip 4 to extend and retract.

[0034] The cross section of the telescopic strip 4 is T-shaped, and it has a plate body 41 parallel to the top plate 21, and a clamping portion 42 that can slide in the long strip hole; the electric push rod 7 and the guide rod 9 are both connected to the plate body 41. The plate body 41 can not only facilitate the connection of components, but also play a stop role to prevent the telescopic strip 4 from extending outwards.

[0035] The fixed seat 1 is a U-shaped structure having two mounting ears 11, wherein the two mounting ears 11 are connected to the rotating seat 2, and a driving motor 10 is installed on each of the mounting ears 11, and the driving motor 10 can drive the rotating seat 2 to rotate relative to the fixed seat 1. The driving motor 10 and the mounting ears 11 are both placed on the inner side of the rotating seat 2.

[0036] The operation process of the auxiliary device for battery cell stacking is as follows: Figure 4 As shown, after a battery cell is stacked, the auxiliary device clamps the diaphragm, the diaphragm release device and the auxiliary device are located on the same side, and the cutter cuts the diaphragm. After the battery cell that has completed the stacking operation is moved away, when the next stacking operation is performed, the rotating seat 2 rotates relative to the fixed seat 1, so that the end of the diaphragm is lower than the stacking platform, and then the diaphragm release device moves to the other side of the stacking platform, so that the edge of the diaphragm can be smoothly overlapped with the edge of the platform, as shown in FIG. Figure 5 As shown, the next lamination operation can be carried out in this way.

[0037] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An auxiliary device for battery cell stacking operation, characterized in that: The invention comprises a fixed seat (1), on which a rotating seat (2) capable of controllably rotating relative to the fixed seat (1) is mounted; the rotating seat (2) is in the shape of an elongated bar, and both ends of the rotating seat are mounted with grippers (3) capable of rotating and opening relative to the rotating seat; the grippers (3) are capable of rotating and switching between a first state and a second state, in which the grippers (3) are perpendicular to the rotating seat (2) in the first state, and in which the grippers (3) are parallel to the rotating seat (2); a telescopic strip (4) capable of telescopic movement is mounted on the rotating seat (2), and the telescopic strip (4) can cooperate with the grippers (3) in the second state to clamp the diaphragm.

2. The auxiliary device for battery cell stacking according to claim 1, characterized in that: A first flexible portion is fixed on the outward side of the telescopic strip (4).

3. The auxiliary device for battery cell stacking according to claim 1, characterized in that: In the second state, the outward side of the gripper (3) has a second flexible portion.

4. The auxiliary device for battery cell stacking according to claim 1, characterized in that: Cylinders (5) arranged for the grippers (3) are respectively installed at both ends of the rotating seat (2), and the telescopic rods of the cylinders (5) are connected to the corresponding grippers (3) via connecting rods (6).

5. The auxiliary device for battery cell stacking according to claim 1, characterized in that: An electric push rod (7) is installed on the rotating seat (2), and the telescopic rod of the electric push rod (7) is connected to the telescopic strip (4); a guide sleeve (8) is also installed on the rotating seat (2); and a guide rod (9) is installed on the telescopic strip (4) and is perpendicular to the telescopic strip and slidably matched with the guide sleeve (8).

6. The auxiliary device for battery cell stacking according to claim 5, characterized in that: The rotating seat (2) is a shell structure, which has a top plate (21), two left and right side plates (22) and a rear plate (23). The electric push rod (7) and the guide sleeve (8) are both installed on the rear plate (23). The top plate (21) is provided with a long hole for the telescopic strip (4) to extend and retract.

7. The auxiliary device for battery cell stacking according to claim 6, characterized in that: The cross section of the telescopic strip (4) is T-shaped, and comprises a plate body (41) parallel to the top plate (21), and a clamping portion (42) capable of sliding in the long strip hole; the electric push rod (7) and the guide rod (9) are both connected to the plate body (41).

8. The auxiliary device for battery cell stacking according to claim 5, characterized in that: The fixed seat (1) is a U-shaped structure having two mounting ears (11), wherein the two mounting ears (11) are both connected to the rotating seat (2), and a driving motor (10) is mounted on each mounting ear (11).

9. The auxiliary device for battery cell stacking according to claim 8, characterized in that: The driving motor (10) and the mounting ear (11) are both placed on the inner side of the rotating seat (2).

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