Battery laser welding tool

Abstract

The utility model discloses a battery laser welding tool, belongs to the technical field of battery manufacturing, and aims at overcoming the defects that an existing battery laser welding tool is high in cost and not beneficial to automation. The tool comprises a clamp used for fixing the battery, the battery comprises a tab and a conducting bar, a pressing plate is arranged on the clamp in a covering mode, a pressing piece is arranged on the pressing plate, a quick clamp is arranged between the clamp and the pressing plate so that the pressing plate can be fixed to the clamp, the pressing piece abuts against the tab or the conducting bar, and the quick clamp is used for clamping the battery. And the tab is attached to the conducting bar. Due to the fact that the pressing plate is fixed to the clamp through the quick clamp, an air cylinder does not need to be arranged to drive the pressing plate to ascend and descend, cost of the air cylinder is saved, the tool does not need power supply or air supply, moving on an assembly line is facilitated, in the tool flowing process, the pressing plate does not need to ascend and descend repeatedly, and the assembly line can run at a more uniform speed.

Description

Technical Field

[0001] The utility model belongs to the technical field of battery manufacturing and relates to a battery laser welding tool. Background Art

[0002] The existing battery laser welding tooling presses the aluminum row and the pole ears of the battery cell by a pressing plate, and the pressing plate needs to be driven up and down by a cylinder. For example, a Chinese patent document discloses a utility model patent for a square shell lithium battery welding tooling, with the authorization announcement number CN218109780U, which includes a base, a slide rail is fixedly installed on the upper end of the base, and the upper end of the slide rail is slidably connected to the square shell module base, the lower end of the square shell module base is fixedly connected to a slider having one end slidably connected to the upper end of the slide rail, the upper end of the square shell module base is fixedly connected to a first limit block, the upper end of the square shell module base is fixedly connected to a second limit block, and the upper end of the square shell module base is placed with a square shell module body. The square shell lithium battery welding tooling fixes the cylinder on a customized welding pressure head fixing block. The welding pressure head moves downward to generate a downward pressing force, so that the aluminum row and the square shell module main battery cell ears have sufficient pressing force. The welding pressure head is fixed and the aluminum row of each ear on the module is welded in turn by moving the square shell module base.

[0003] The above-mentioned tooling needs to be driven by a cylinder, which is costly and not conducive to automated welding of aluminum bars and tabs in an assembly line. Summary of the invention

[0004] The utility model proposes a battery laser welding tool to solve the problems existing in the prior art, aiming to overcome the defects of the prior battery laser welding tool, such as high cost and disadvantages of automation.

[0005] The utility model is achieved in this way:

[0006] A battery laser welding tool, comprising a clamp for fixing a battery, wherein the battery comprises a pole ear and a conductive bar, a pressure plate is provided on the upper cover of the clamp, a clamping piece is provided on the pressure plate, and the characteristic is that a quick clamp is provided between the clamp and the pressure plate to fix the pressure plate on the clamp, the clamping piece abuts against the pole ear or the conductive bar, and the pole ear and the conductive bar fit together. After the battery is placed in the clamp, the pole ear and the conductive bar are pressed and fitted together by the clamping piece on the pressure plate, which is convenient for welding the pole ear and the conductive bar. Since the pressure plate is fixed to the clamp by the quick clamp, there is no need to set a cylinder to drive the pressure plate to rise and fall, which saves the cost of the cylinder, and the tool does not need to be powered or supplied with gas, which is conducive to movement on the assembly line. During the flow of the tool, the pressure plate does not need to be repeatedly raised and lowered, which is convenient for the assembly line to run at a more uniform speed.

[0007] Preferably, the quick clamp includes a movable fastener fixed to the clamp or the pressure plate, and a fixed buckle position fixed to the pressure plate or the clamp, and the movable fastener includes an operating handle hinged to the clamp or the pressure plate and a buckle ring hinged to the operating handle, so that when the operating handle is flipped away from the fixed buckle position, the buckle ring is tightly buckled to the fixed buckle position. When the quick clamp is fixed on the pressure plate, the pressure plate will move downward a certain distance, so that the clamping member can press the tab and the conductive bar.

[0008] Preferably, the operating handle is hinged to the clamp at a first hinge position, the buckle ring is hinged to the operating handle at a second hinge position, and when the buckle ring is tightly buckled on the fixed buckle position, the second hinge position is below the first hinge position.

[0009] Preferably, the fixture comprises a base, a first side plate, a second side plate, a third side plate and a fourth side plate, wherein the first side plate and the second side plate are adjacent and fixed to the base, the third side plate is rotatably connected to the second side plate, the fourth side plate is rotatably connected to the third side plate, and the fourth side plate is detachably fixedly connected to the first side plate. This facilitates the installation of the third side plate corresponding to the battery metal shell.

[0010] Preferably, the lower end of the fourth side plate is fixedly connected to the base via a quick clamp, so that the fourth side plate is more firmly fixed.

[0011] Preferably, the battery comprises a metal shell, the metal shell has a rivet position, and both ends of the upper ends of the second side plate and the fourth side plate have a clearance opening, and the rivet position is exposed from the clearance opening. This makes it easy to fix the metal shell with rivets and also makes it easy for staff to confirm the fixing status of the metal shell.

[0012] Preferably, the clamping member includes an abutment portion and a connection portion, and the inclination angle of the first side wall of the abutment portion close to the middle of the pressure plate is greater than the inclination angle of the second side wall of the abutment portion close to the edge of the pressure plate. Since the laser is emitted from the welding head in a cone shape, the first side wall with a larger inclination angle can block the laser less, and the second side wall with a smaller inclination angle can avoid interference with the metal shell.

[0013] Preferably, the tooling includes a detection plate, the detection plate has a fixed buckle position to cooperate with the movable buckle on the fixture, and one of the pressure plate and the detection plate is fixed to the fixture. In this way, the connection of each battery cell and the welding status of the conductive bar and the tab can be detected.

[0014] Preferably, a limiting plate is provided below the pressing plate, the limiting plate has a plurality of limiting openings, and the conductive bar is arranged in the limiting openings, so as to facilitate positioning of the conductive bar.

[0015] Preferably, both ends of the base are provided with carrying grooves, which facilitates the subsequent carrying and positioning of personnel and equipment, and reduces the possibility of products falling or employees' fingers being crushed due to carrying difficulties.

[0016] The utility model has the following beneficial effects: since the pressing plate is fixed on the fixture by a quick clamp, there is no need to set a cylinder to drive the pressing plate to rise and fall, thus saving the cost of the cylinder, and the tooling does not require power or air supply, which is conducive to movement on the assembly line. During the flow of the tooling, the pressing plate does not need to be repeatedly raised and lowered, which facilitates the assembly line to run at a more uniform speed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure of the tooling equipped with a battery;

[0018] Figure 2 It is a schematic diagram of the partial structure of the tooling equipped with a battery;

[0019] Figure 3 is a schematic diagram of the fixture structure equipped with a metal shell;

[0020] Figure 4 is a schematic diagram of the structure of the pressing member at a first angle;

[0021] Figure 5 is a schematic diagram of the structure of the pressing member at a second angle;

[0022] Figure 6 This is a schematic diagram of the structure of the tooling when used for testing.

[0023] Explanation of the accompanying drawings: 100, clamp; 110, operating handle; 111, first hinge position; 112, second hinge position; 120, buckle; 130, base; 131, carrying slot; 140, first side panel; 150, second side panel; 160, third side panel; 170, fourth side panel; 180, clearance port; 210, conductive bar; 220, metal shell; 221, riveted position; 300, pressure plate; 310, fixed buckle position; 400, clamping piece; 410, connecting part; 420, abutting part; 421, first side wall; 422, second side wall; 500, detection plate; 600, limit plate. DETAILED DESCRIPTION

[0024] The following will further describe the specific implementation of the utility model in combination with the accompanying drawings of the embodiments, so that the technical solution of the utility model is easier to understand and grasp. 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.

[0025] This embodiment provides a battery laser welding tool, such as Figure 1-5As shown, a clamp 100 for fixing a battery is included, and the battery includes a tab and a conductive bar 210. A pressing plate 300 is provided on the clamp 100, and a pressing member 400 is provided on the pressing plate 300. A quick clamp is provided between the clamp 100 and the pressing plate 300 to fix the pressing plate 300 on the clamp 100. The pressing member 400 abuts against the tab or the conductive bar 210, and the tab and the conductive bar 210 fit together. After the battery is placed in the clamp 100, the tab and the conductive bar 210 are pressed and fitted together by the pressing member 400 on the pressing plate 300, so as to facilitate welding of the tab and the conductive bar 210. Since the pressing plate 300 is fixed to the fixture 100 by a quick clamp, there is no need to set a cylinder to drive the pressing plate 300 to rise and fall, which saves the cost of the cylinder and the tooling does not require power or air supply, which is conducive to movement on the assembly line. During the flow of the tooling, the pressing plate 300 does not need to be repeatedly raised and lowered, which facilitates the assembly line to run at a more uniform speed.

[0026] like Figure 1-3 As shown, the quick clamp includes a movable fastener fixed on the clamp 100, and a fixed buckle position 310 fixed on the pressure plate 300, and the movable fastener includes an operating handle 110 hinged on the clamp 100 and a buckle ring 120 hinged on the operating handle 110, so that when the operating handle 110 is flipped away from the fixed buckle position 310, the buckle ring 120 is tightly buckled on the fixed buckle position 310. When the quick clamp is fixed on the pressure plate 300, the pressure plate 300 will move downward a certain distance to facilitate the clamping member 400 to clamp the tab and the conductive bar 210. In other optional embodiments, the movable fastener can also be fixed on the pressure plate 300, and the fixed buckle position 310 is set on the clamp 100.

[0027] Furthermore, the operating handle 110 is hinged to the clamp 100 at a first hinge position 111, and the buckle 120 is hinged to the operating handle 110 at a second hinge position 112. When the buckle 120 is tightly buckled on the fixed buckle position 310, the second hinge position 112 is located below the first hinge position 111. When the staff controls the operating handle 110 to swing downward based on the first hinge position 111, the buckle 120 moves downward, so that the pressing plate 300 moves downward, and the pressing plate 300 further drives the pressing member 400 to move downward. A spring is provided between the pressing member 400 and the pressing plate 300. The downward movement of the pressing member 400 is smaller than that of the pressing plate 300. The spring is compressed to prevent the pressing member 400 from exerting too much pressure on the tab and the conductive bar 210.

[0028] like Figure 1-3As shown, the clamp 100 includes a base 130, a first side panel 140, a second side panel 150, a third side panel 160 and a fourth side panel 170, the first side panel 140 and the second side panel 150 are adjacent to and fixed on the base 130, the third side panel 160 is rotatably connected to the second side panel 150, the fourth side panel 170 is rotatably connected to the third side panel 160, and the fourth side panel 170 is detachably fixedly connected to the first side panel 140. The battery includes a metal shell 220. When placing the battery cell and the metal shell 220, the third side plate 160 and the fourth side plate 170 are first opened, and the metal shells 220 corresponding to the first side plate 140 and the second side plate 150 are placed in the fixture 100, and then the battery cell is placed from the corresponding position of the first side plate 140 to the direction of the third side plate 160. After the battery cell is placed, the metal shell 220 corresponding to the third side plate 160 and the metal shell 220 corresponding to the fourth side plate 170 are placed, and then the third side plate 160 and the fourth side plate 170 are viewed, and the fourth side plate 170 is fixed to the first side plate 140 by a quick clamp. Since the third side plate 160 can be opened, it is avoided that the last battery cell and the corresponding metal shell 220 are difficult to place. In other optional embodiments, the fourth side plate 170 can also be opened, and the third side plate 160 can be fixed to the base 130 in an unopenable manner.

[0029] The battery cell is a square aluminum shell battery cell, which is relatively large in size. The metal shell 220 is an iron shell, and the battery cell is further fastened by the iron shell to facilitate the movement of the battery. The third side plate 160 is rotatably connected to the second side plate 150 through two hinge shells, and the fourth side plate 170 is also rotatably connected to the third side plate 160 through two hinges.

[0030] like Figure 1 , 3 As shown, the lower end of the fourth side plate 170 is fixedly connected to the base 130 by a quick clamp. This makes the fourth side plate 170 more firmly fixed, preventing the fourth side plate 170 from being skewed and deformed upward due to the upward force applied by the spring of the pressing plate 300 and the pressing member 400.

[0031] like Figure 2 , 3 As shown, the metal shell 220 has a rivet position 221, and the upper ends of the second side plate 150 and the fourth side plate 170 have a clearance opening 180 at both ends, and the rivet position 221 is exposed from the clearance opening 180. This makes it easy to fix the metal shell 220 with rivets, and also makes it easy for staff to confirm the fixing status of the metal shell 220. The metal shell 220 includes four metal plates corresponding to the first side plate 140, the second side plate 150, the third side plate 160 and the fourth side plate 170, respectively, and the adjacent metal plates are fixed by rivets set at the rivet position 221.

[0032] like Figure 4 , 5 As shown, the clamping member 400 includes an abutting portion 420 and a connecting portion 410. The inclination angle of the first side wall 421 of the abutting portion 420 near the middle of the pressing plate 300 is greater than the inclination angle of the second side wall 422 of the abutting portion 420 near the edge of the pressing plate 300. Since the laser is emitted from the welding head in a cone shape, the first side wall 421 with a larger inclination angle can block the laser less, and the second side wall 422 with a smaller inclination angle can avoid interference with the metal shell 220. The size of the inclination angle is relative to the vertical plane. The angle between the first side wall 421 and the vertical plane is greater than 45 degrees, such as 60 degrees. The second side wall 422 is the opposite side wall of the first side wall 421, and the angle between the second side wall 422 and the vertical plane is less than 45 degrees, such as 20 degrees. The connecting portion 410 is connected to the pressing plate 300 through a guide shaft, and the spring is sleeved on the guide shaft.

[0033] like Figure 6 As shown, the tooling includes a detection plate 500, and the detection plate 500 has a fixed buckle 310 that cooperates with the movable fastener on the fixture 100. After the welding of the pole ear and the conductive bar 210 is completed, the pressure plate 300 is removed, and the detection plate 500 is fixed to the fixture 100. The conductive needle on the detection plate 500 is in contact with the conductive bar 210. An indicator device is provided on the detection plate 500, and the conductive needle is connected to the indicator device. The indicator device can also be a display or an indicator light, so that the connection of each battery cell and the welding status of the conductive bar 210 and the pole ear can be detected.

[0034] like Figure 2 As shown, a limiting plate 600 is disposed below the pressing plate 300 , and the limiting plate 600 has a plurality of limiting openings, and the conductive bar 210 is arranged in the limiting openings, so as to facilitate positioning of the conductive bar 210 .

[0035] like Figure 1-3 As shown, the two ends of the base 130 are provided with carrying grooves 131. This facilitates the subsequent personnel and equipment to carry and position, and reduces the risk of products falling or crushing employees' fingers due to difficult carrying.

Claims

1. A battery laser welding tool, comprising a fixture (100) for fixing a battery, wherein the battery comprises a tab and a conductive bar (210), the fixture (100) is covered with a pressing plate (300), and the pressing plate (300) is provided with a pressing member (400), wherein: A quick clamp is provided between the clamp (100) and the pressing plate (300) so that the pressing plate (300) is fixed on the clamp (100), and the pressing member (400) abuts against the pole ear or the conductive bar (210), and the pole ear and the conductive bar (210) are in close contact.

2. A battery laser welding tool according to claim 1, characterized in that: The quick clamp comprises a movable fastener fixed on the clamp (100) or the pressure plate (300), and a fixed buckle position (310) fixed on the pressure plate (300) or the clamp (100); the movable fastener comprises an operating handle (110) hinged on the clamp (100) or the pressure plate (300) and a buckle ring (120) hinged on the operating handle (110), so that when the operating handle (110) is turned in a direction away from the fixed buckle position (310), the buckle ring (120) is tightly buckled on the fixed buckle position (310).

3. A battery laser welding tool according to claim 2, characterized in that: The operating handle (110) is hinged to the clamp (100) at a first hinge position (111), and the buckle (120) is hinged to the operating handle (110) at a second hinge position (112). When the buckle (120) is tightly buckled on the fixed buckle position (310), the second hinge position (112) is located below the first hinge position (111).

4. A battery laser welding tool according to claim 1, characterized in that: The clamp (100) includes a base (130), a first side plate (140), a second side plate (150), a third side plate (160) and a fourth side plate (170), wherein the first side plate (140) and the second side plate (150) are adjacent to and fixed on the base (130), the third side plate (160) is rotatably connected to the second side plate (150), the fourth side plate (170) is rotatably connected to the third side plate (160), and the fourth side plate (170) is detachably fixedly connected to the first side plate (140).

5. A battery laser welding tool according to claim 4, characterized in that: The lower end of the fourth side plate (170) is fixedly connected to the base (130) via a quick clamp.

6. A battery laser welding tool according to claim 4, characterized in that: The battery comprises a metal shell (220), the metal shell (220) having a riveting position (221), and both ends of the upper ends of the second side plate (150) and the fourth side plate (170) having a clearance opening (180), and the riveting position (221) is exposed from the clearance opening (180).

7. The battery laser welding tool according to claim 1, characterized in that: The pressing member (400) comprises an abutting portion (420) and a connecting portion (410), wherein the inclination angle of a first side wall (421) of the abutting portion (420) close to the middle of the pressing plate (300) is greater than the inclination angle of a second side wall (422) of the abutting portion (420) close to the edge of the pressing plate (300).

8. The battery laser welding tool according to claim 1, characterized in that: The tooling comprises a detection plate (500), the detection plate (500) having a fixed buckle position (310) cooperating with a movable buckle on the clamp (100), and one of the pressing plate (300) and the detection plate (500) is fixed to the clamp (100).

9. A battery laser welding tool according to any one of claims 1 to 8, characterized in that: A limiting plate (600) is provided below the pressing plate (300), the limiting plate (600) having a plurality of limiting openings, and the conductive row (210) is arranged in the limiting openings.

10. A battery laser welding tool according to claim 4, characterized in that: Both ends of the base (130) are provided with transport grooves (131).

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