Square lithium battery aluminum shell welding auxiliary device

Abstract

The utility model provides a kind of square lithium battery aluminium shell welding auxiliary device, it is related to the technical field of battery, including base and rotation installation in the side clamping arm of base, the clamping arm is rotationally installed in the both sides of base, the bottom end of two clamping arms in same side is connected with the tension spring in tensile state, and the top end between two clamping arms of different sides is connected with the compression roller that straddles base, and compression roller can be pulled with tension spring and close to base.The utility model can disperse the force of clamping when clamping hollow battery aluminium shell, avoid the deformation condition caused by the concentrated stress in the middle of battery aluminium shell, the utility model can be applied to the compression of battery aluminium alloy of multiple sizes by the rotating mode of clamping arm cooperation compression roller, improve the convenience of battery aluminium shell compression.

Description

Technical Field

[0001] This utility model relates to the technical field of batteries, and in particular to an auxiliary device for welding aluminum shells of square lithium batteries. Background Technology

[0002] Currently, the production process of square lithium battery aluminum shells on the production line requires clamping the object. The clamping process generally involves locking and fixing the aluminum shell of the battery with a clamping device, which then allows for welding. The clamping device typically uses a cylinder pressing clamping method, with the clamping point located in the middle of the aluminum shell of the battery. Since the interior of the aluminum shell of the battery is hollow, the cylinder pressing clamping method may cause the aluminum shell of the battery to deform, affecting the yield rate of the aluminum shell of the battery. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a welding auxiliary device for square lithium battery aluminum shells to solve the problem of aluminum shell deformation that may occur when clamping the battery aluminum shell.

[0004] Based on the technical problems existing in the background art, this utility model proposes a square lithium battery aluminum shell welding auxiliary device, including a base and clamping arms rotatably mounted on the side of the base. The clamping arms are rotatably mounted on both sides of the base. The bottom ends of the two clamping arms on the same side are connected to a tension spring in a stretched state. The top ends of the two clamping arms on different sides are connected to a pressure roller that spans the base. The pressure roller can be pulled by the tension spring and move closer to the base.

[0005] In the above scheme, the clamping arms can rotate relative to the base. When the aluminum shell is placed on the base, the tension spring in the stretched state will pull the two clamping arms closer together and make the pressure roller connected to the top of the clamping arms press against the aluminum shell, thus satisfying the clamping of the aluminum shell, avoiding the middle of the aluminum shell being clamped, and distributing the clamping force to the edge of the aluminum shell to prevent the aluminum shell from deforming.

[0006] Preferably, the base is equipped with multiple bearing seats, and the middle of the clamping arm is rotatably connected to the side of the bearing seat.

[0007] In the above solution, the bearing seat installed on the base facilitates the installation of the clamping arm, and the clamping arm can easily rotate on the side of the base, which facilitates the installation and disassembly of the clamping arm and reduces the thickness requirement of the base.

[0008] Preferably, a sliding rod protruding outward is connected to the middle of the clamping arm, and a lifting mechanism is installed between the clamping arms on the same side. A crossbar is connected to the lifting end of the lifting mechanism, and a sliding groove is opened in the middle of the crossbar. The sliding rod passes through the sliding groove and slides along the sliding groove.

[0009] In the above scheme, the lifting mechanism can drive the clamping arm to rotate through the crossbar and lift the pressure roller, which makes it convenient for personnel to place the battery aluminum shell on the base.

[0010] Preferably, the guiding direction of the chute is parallel to the ground.

[0011] In the above scheme, the groove can guide the slide bar to slide along the crossbar, and the groove can also restrict the path and direction of the slide bar's movement.

[0012] Preferably, the two ends of the tension spring are respectively connected to shaft blocks, and the shaft blocks are rotatably connected to the bottom end of the clamping arm.

[0013] In the above scheme, the tension spring can provide tension for the two clamping arms. Under the action of the tension spring, the top of the clamping arm can clamp the aluminum battery shell on the base longitudinally through the pressure roller to achieve the clamping effect. At the same time, the tension spring can reduce the force required by the lifting mechanism and reduce energy consumption.

[0014] Preferably, the rotation axis of the shaft block relative to the clamping arm is parallel to the rotation axis of the clamping arm relative to the shaft seat.

[0015] In the above scheme, the shaft block can adjust the direction of the tension spring force, preventing the tension spring from bending as the clamping arm rotates, which would cause the tension force to change direction.

[0016] Preferably, the pressure roller is a rubber roller.

[0017] In the above scheme, the pressure roller is made of rubber roller, which has a certain elasticity. When pressing the aluminum battery shell, it can reduce the pressure on the surface of the aluminum battery shell through deformation, thereby avoiding deformation of the aluminum battery shell.

[0018] Compared with the prior art, the square lithium battery aluminum shell welding auxiliary device proposed in this utility model adopts the above technical solution and achieves the following technical effects:

[0019] This invention can distribute the clamping force when clamping hollow battery aluminum shells, avoiding deformation caused by concentrated force in the middle of the battery aluminum shell. This invention can be used to press and fix battery aluminum shells of various sizes by means of clamping arms and rotating pressure rollers, improving the convenience of pressing and fixing battery aluminum shells. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0021] In the diagram: 1. Base; 2. Clamping arm; 3. Tension spring; 4. Pressure roller; 5. Shaft seat; 21. Slide rod; 6. Lifting mechanism; 61. Crossbar; 611. Slide groove; 31. Shaft block. Detailed Implementation

[0022] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0023] Example

[0024] Please refer to Figure 1 This utility model proposes a square lithium battery aluminum shell welding auxiliary device, including a base 1 and clamping arms 2 rotatably mounted on the side of the base 1. The clamping arms 2 are rotatably mounted on both sides of the base 1. The bottom ends of the two clamping arms 2 on the same side are connected to tension springs 3 in a stretched state. The top ends of the two clamping arms 2 on different sides are connected to a pressure roller 4 spanning the base 1. The pressure roller 4 can be pulled by the tension springs 3 and move closer to the base 1. In this design, four clamping arms 2 are used. During installation, every two clamping arms 2 are installed on one side of the base 1. The rotation connection points of the two clamping arms 2 on the same side are spaced at the same interval, and the rotation connection points of the four clamping arms 2 form a rectangle. When it is necessary to clamp the aluminum shell of the battery, the clamping arms 2 need to be rotated by lever principle so that the upper end of the clamping arm 2 can rotate away from the base 1, increasing the distance between the top end of the clamping arm 2 and the base 1, thereby raising the height of the pressure roller 4, making it easier to place the aluminum shell of the battery under the pressure roller 4. When the clamping arms 2 are released, the tension springs 3 will pull the clamping arms 2 to rotate, so that the pressure roller 4 presses and fixes the aluminum shell of the battery, achieving the effect of pressing and fixing.

[0025] In specific implementation, refer to Figure 1 Multiple bearing seats 5 are installed on the base 1, and the middle of the clamping arm 2 is rotatably connected to the side of the bearing seat 5. In this scheme, four bearing seats 5 are set on the base 1, each bearing seat 5 corresponds to a clamping arm 2, and the clamping arm 2 is rotatably connected to the bearing seat 5. The rotation axes of the clamping arm 2 relative to the bearing seat 5 are parallel to each other, and the rotation connection points are located at the same height and the same horizontal plane.

[0026] In specific implementation, refer to Figure 1The clamping arm 2 has an outwardly protruding slide rod 21 connected to its middle part. A lifting mechanism 6 is installed between the clamping arms 2 on the same side. The lifting end of the lifting mechanism 6 is connected to a crossbar 61. A groove 611 is opened in the middle of the crossbar 61. The slide rod 21 passes through the groove 611 and slides along the groove 611. In this scheme, the lifting mechanism 6 can drive the crossbar 61 to rise and fall together. During the lifting process, the crossbar 61 will force the slide rod 21 to slide along the groove 611. Since the clamping arm 2 and the crossbar 61 are not perpendicular, the sliding of the slide rod 21 will not be greatly disturbed and can slide smoothly. Therefore, the slide rod 21 can drive the clamping arm 2 to rotate relative to the bearing 5.

[0027] In specific implementation, refer to Figure 1 The guide direction of the slide 611 is parallel to the ground. In this scheme, setting the slide 611 parallel to the ground can ensure that the clamping arm 2 can slide and rotate within the slide 21 in the slide 611. Each crossbar 61 has two slides 611, located on both sides of the lifting mechanism 6. The two slides 611 only need to be symmetrical with respect to the lifting mechanism 6, and the slide 611 can also form a certain angle with the ground.

[0028] In specific implementation, refer to Figure 1 The two ends of the tension spring 3 are respectively connected to the shaft block 31, and the shaft block 31 is rotatably connected to the bottom end of the clamping arm 2. In this scheme, since the clamping arm 2 will rotate, the tension spring 3 may change the direction of the tension force as the clamping arm 2 rotates. Therefore, it is fixed by the shaft block 31. The shaft block 31 is rotatably installed at the bottom end of the clamping arm 2. The rotation axis of the shaft block 31 relative to the clamping arm 2 is parallel to the rotation axis of the clamping arm 2 relative to the shaft seat 5. The tension spring 3 can change the direction of the tension force by rotating the shaft block 31, thereby keeping the bottom ends of the two clamping arms 2 close to each other.

[0029] In specific implementation, refer to Figure 1 The pressure roller 4 is a rubber roller.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A welding auxiliary device for square lithium battery aluminum shells, characterized in that, Includes a base (1) and a clamping arm (2) rotatably mounted on the side of the base (1). The clamping arms (2) are rotatably mounted on both sides of the base (1). The bottom ends of the two clamping arms (2) on the same side are connected to a tension spring (3) in a stretched state. The top ends of the two clamping arms (2) on different sides are connected to a pressure roller (4) that spans the base (1). The pressure roller (4) can be pulled along with the tension spring (3) and move closer to the base (1).

2. The square lithium battery aluminum shell welding auxiliary device according to claim 1, characterized in that, Multiple bearing seats (5) are installed on the base (1), and the middle part of the clamping arm (2) is rotatably connected to the side of the bearing seat (5).

3. The square lithium battery aluminum shell welding auxiliary device according to claim 1, characterized in that, A sliding rod (21) protruding outward is connected to the middle of the clamping arm (2). A lifting mechanism (6) is installed between the clamping arms (2) on the same side. A crossbar (61) is connected to the lifting end of the lifting mechanism (6). A sliding groove (611) is opened in the middle of the crossbar (61). The sliding rod (21) passes through the sliding groove (611) and slides along the sliding groove (611).

4. The square lithium battery aluminum shell welding auxiliary device according to claim 3, characterized in that, The guide direction of the chute (611) is parallel to the ground.

5. The square lithium battery aluminum shell welding auxiliary device according to claim 1, characterized in that, The two ends of the tension spring (3) are respectively connected to the shaft block (31), and the shaft block (31) is rotatably connected to the bottom end of the clamping arm (2).

6. The square lithium battery aluminum shell welding auxiliary device according to claim 2, characterized in that, The rotation axis of the shaft block (31) relative to the clamping arm (2) is parallel to the rotation axis of the clamping arm (2) relative to the shaft seat (5).

7. The square lithium battery aluminum shell welding auxiliary device according to claim 1, characterized in that, The pressure roller (4) is a rubber roller.

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