Battery cell grabbing collector plate welding assembly

Abstract

The utility model discloses a battery cell grabbing collector plate welding assembly, which relates to the technical field of battery preparation, and comprises two groups of mounting plate main bodies, and one side of each of the two groups of mounting plate main bodies is fixedly connected with a fixed plate. By designing the clamping assembly, multiple groups of battery cells can be carried at a time, the carrying efficiency is improved, multiple groups of laser emitting heads are started at the same time to weld the battery cells, the overall production efficiency is improved, and the clamping assembly is further utilized to play a role in fixing and extruding the battery cells and the positive current collecting plate or the negative current collecting plate; according to the welding device for the collector plate of the battery cell, the effect of tight fitting is achieved, the situation that a large amount of fire is splashed on the collector plate to cause oxidation during laser welding, and then the welding effect is poor is prevented, manual operation can be replaced, it can be guaranteed that the collector plate cannot deviate during welding, and therefore the welding quality of the collector plate and the end of the battery cell is guaranteed; and the subsequent preparation work of the battery is not influenced.

Description

Technical Field

[0001] This utility model relates to the field of battery manufacturing technology, specifically to a cell gripping current collector welding assembly. Background Technology

[0002] With the rapid development of the battery industry, lithium-ion and sodium-ion batteries are being used more and more widely. In the manufacturing process of lithium-ion and sodium-ion batteries, the welding quality between the current collector and the end of the winding core has a significant impact on subsequent battery manufacturing processes.

[0003] In the prior art, after the core is prepared, it is placed horizontally, and then the positive current collector is aligned with the positive electrode of the core and welded manually, and the negative current collector is aligned with the negative electrode of the core and welded manually. During the welding process, the positive and negative current collectors are prone to misalignment, which affects the welding quality between the current collector and the end of the core.

[0004] The existing patent (publication number: CN220445352U) discloses that the battery cell is grasped by a robotic arm so that its positive and negative terminals are aligned with the positive and negative current collectors on the positive and negative current collector tray. Laser emitters are respectively set below the positive and negative current collector trays. The positive and negative current collectors are welded to the positive and negative terminals of the battery cell through the open part of the positive and negative current collector placement position. This utility model can replace manual operation and can ensure that the positive and negative current collectors will not shift during welding, thereby ensuring the welding quality of the current collectors and the end of the core, and will not affect the subsequent manufacturing work of the battery.

[0005] However, the above-mentioned technical solution still has certain defects. The battery cells are picked up by a robotic arm and placed on the positive and negative current collector trays, and then laser welding is performed. However, in actual operation, if the battery cells are not tightly attached to the positive and negative current collectors, a large number of sparks will be generated during laser welding. These sparks will cause oxidation of the current collectors when they are splashed on the positive and negative current collectors, resulting in poor welding effect. At the same time, the robotic arm can only pick up the battery cells one by one, which affects its production efficiency. Therefore, the applicant hopes to propose a battery cell picking and current collector welding assembly. Utility Model Content

[0006] Based on this, the purpose of this utility model is to provide a battery cell gripping current collector welding assembly to solve the technical problems mentioned in the background.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a battery cell gripping current collector welding assembly, comprising two sets of mounting plate bodies, each set of mounting plate bodies having a fixed plate fixedly connected to one side, and each set of fixed plates having a placement frame fixedly connected to the side away from the mounting plate body, a positive current collector tray fixedly installed inside one set of placement frames, and a negative current collector tray fixedly installed inside the other set of placement frames, a protective assembly provided inside the placement frame, a clamping assembly provided above the placement frame, and a mobile robotic arm externally connected to the clamping assembly;

[0008] The clamping assembly includes a clamping frame for an externally connected mobile robotic arm. Both ends of the inner cavity of the clamping frame are provided with bidirectional threaded screws in the horizontal direction. Both ends of the two sets of bidirectional threaded screws are threaded to a moving plate. Several sets of equidistantly distributed connecting columns are fixedly connected to the opposite side of the two sets of moving plates. The other end of each set of connecting columns passes through the inner side of the clamping frame and is fixedly connected to an arc-shaped clamping plate.

[0009] As a preferred technical solution of the battery cell gripping current collector welding assembly of this utility model, one end of each of the two sets of bidirectional threaded screws extends through to the outside of the clamping frame and a pulley is fixedly sleeved on the outer wall of each of them. The two sets of pulleys are connected by belt drive. One end of one set of bidirectional threaded screws is equipped with a motor. The output end of the motor is fixedly connected to one end of the bidirectional threaded screw through a coupling, and the motor is fixedly connected to one side of the clamping frame through a fixed base.

[0010] As a preferred technical solution of the battery cell gripping current collector welding assembly of this utility model, the clamping surfaces of several sets of arc-shaped clamps are all provided with anti-slip textures.

[0011] As a preferred technical solution of the battery cell gripping current collector welding assembly of this utility model, the protective assembly includes nitrogen boxes fixedly installed on both sides of the upper surface of the fixed plate. Each set of nitrogen boxes is fixedly connected to a connecting pipe at the bottom outer side. The connecting pipe extends through into the placement frame, and an air pump is installed at the other end of the connecting pipe.

[0012] As a preferred technical solution of the battery cell gripping current collector welding assembly of this utility model, an air blowing port is fixedly installed at the lower inner side of the placement frame, the air blowing port is connected to the inner cavity of the placement frame, and a square baffle is fixedly installed at the bottom of the placement frame.

[0013] As a preferred technical solution of the battery cell gripping current collector welding assembly of this utility model, a number of equidistant positive current collectors are placed on the positive current collector tray, a number of equidistant negative current collectors are placed on the negative current collector tray, and battery cells are placed on the positive current collectors and negative current collectors.

[0014] As a preferred technical solution of the battery cell gripping current collector welding assembly of this utility model, the bottom of the positive current collector tray and the negative current collector tray are provided with several sets of equidistant through holes, and a laser emitting head is provided directly below each set of through holes.

[0015] In summary, the present invention has the following main advantages:

[0016] 1. This utility model, through the design of a clamping component, can transport multiple sets of battery cells at once, improving transport efficiency. Simultaneously, multiple laser emitters are activated to weld them, improving overall production efficiency. Furthermore, the clamping component uses a fixing and squeezing effect on the battery cells and the positive or negative current collector, thereby achieving a tight fit. This prevents a large amount of sparks from being generated during laser welding and causing oxidation on the current collector, which would result in poor welding effect. This device can replace manual operation and ensures that the current collector does not shift during welding, thus guaranteeing the welding quality between the current collector and the battery cell end and not affecting subsequent battery manufacturing work.

[0017] 2. This utility model, through the design of protective components, draws nitrogen from the nitrogen tank by activating an air pump and enters the internal space of the placement frame through the first connecting pipe. The nitrogen is discharged from the air blowing ports on both sides, filling the entire welding environment with inert protective gas to avoid oxidation of the manifold during the high-temperature welding process, thereby ensuring better and more stable welding results. By setting up square baffles, the nitrogen flows in the welding area for a longer time when it is discharged from the air blowing ports, further improving the welding effect and stability. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a partial structural diagram of the protective component of this utility model;

[0020] Figure 3 This is a schematic diagram of the placement frame and positive electrode current collector tray structure of this utility model;

[0021] Figure 4 This is a bottom view of the placement frame of this utility model;

[0022] Figure 5 This is a schematic diagram of the internal structure of the clamping frame of this utility model.

[0023] In the diagram: 100, mounting plate body; 200, protective assembly; 300, clamping assembly;

[0024] 110. Fixing plate; 120. Placement frame; 130. Positive current collector tray; 131. Positive current collector; 140. Battery cell; 150. Negative current collector tray; 151. Negative current collector; 160. Laser emitter; 170. Through hole;

[0025] 210. Nitrogen chamber; 220. Connecting pipe; 230. Air outlet; 240. Square baffle;

[0026] 310. Clamping frame; 320. Double-ended threaded screw; 330. Belt; 340. Motor; 350. Moving plate; 360. Connecting column; 370. Arc-shaped clamping plate. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present utility model, and should not be construed as limiting the present utility model. The embodiments of the present utility model will be described below based on its overall structure.

[0028] like Figure 1-5As shown, a cell gripping current collector welding assembly of the present invention includes two sets of mounting plate bodies 100. A fixing plate 110 is fixedly connected to one side of each of the two sets of mounting plate bodies 100. A placement frame 120 is fixedly connected to the side of each of the two sets of fixing plates 110 away from the mounting plate body 100. A positive current collector tray 130 is fixedly installed inside one placement frame 120, and a negative current collector tray 150 is fixedly installed inside the other placement frame 120. A positive current collector tray 150 is placed on the positive current collector tray 130. There are several sets of equidistantly distributed positive current collectors 131, and several sets of equidistantly distributed negative current collectors 151 are placed on a negative current collector tray 150. Battery cells 140 are placed on the positive current collectors 131 and negative current collectors 151. Several sets of equidistantly distributed through holes 170 are opened at the bottom of the positive current collector tray 130 and the negative current collector tray 150, and a laser emitter 160 is located directly below each set of through holes 170. A protective component 200 is provided inside the placement frame 120. A clamping assembly 300 is provided above the frame 120, and a mobile robotic arm is externally connected to the clamping assembly 300. The clamping assembly 300 includes a clamping frame 310 for externally connected mobile robotic arm. Both ends of the inner cavity of the clamping frame 310 are provided with bidirectional threaded screws 320. Both ends of the two sets of bidirectional threaded screws 320 are threadedly connected to moving plates 350. Several sets of equidistantly distributed connecting posts 360 are fixedly connected to opposite sides of the two sets of moving plates 350. The other end of each set of connecting posts 360 passes through the clamping frame. An arc-shaped clamping plate 370 is fixedly connected to the inner side of the frame 310. One end of each of the two sets of bidirectional threaded screws 320 extends through to the outer side of the clamping frame 310, and a pulley is fixedly sleeved on the outer wall of each of them. The two sets of pulleys are connected by a belt 330. A motor 340 is installed at one end of one set of bidirectional threaded screws 320. The output end of the motor 340 is fixedly connected to one end of the bidirectional threaded screw 320 through a coupling, and the motor 340 is fixedly connected to one side of the clamping frame 310 through a fixed base.

[0029] Before welding, this device uses a mobile robotic arm with a clamping assembly 300 to grasp several horizontally placed battery cells 140 and rotate them 90 degrees to their positive and negative ends to align them with the positive current collector 131 on the positive current collector tray 130 and the negative current collector 151 on the negative current collector tray 150 for welding. While the clamping assembly 300 is grasping the battery cells 140, a motor 340 is started, driving two sets of bidirectional threaded screws 320 to rotate synchronously via a belt 330. This causes two sets of threaded moving plates 350 to move relative to each other, bringing the connecting posts 360 and the arc-shaped clamping plates 370 fixedly connected to the moving plates 350 closer together until the corresponding battery cells 140 are clamped. They are then transported to the positive current collector 131, and the clamping assembly 300 rotates continuously. The device remains stationary, providing a secure and compacting effect between the battery cell 140 and the positive current collector 131. The clamping assembly 300 allows for the simultaneous transport of multiple battery cells 140, improving transport efficiency. Simultaneously, multiple laser emitters 160 are activated for welding, further enhancing overall production efficiency. The clamping assembly 300 further secures and compresses the battery cell 140 against the positive current collector 131 or negative current collector 151, ensuring a tight fit and preventing excessive sparks from igniting the current collector during laser welding, which could lead to oxidation and poor welding results. This device can replace manual operation and ensures the current collector does not shift during welding, thus guaranteeing the welding quality between the current collector and the battery cell 140 end and preventing any impact on subsequent battery manufacturing processes.

[0030] Please refer to this carefully. Figure 5 As shown, the clamping surfaces of several sets of arc-shaped clamping plates 370 are all provided with anti-slip textures.

[0031] By creating anti-slip textures, the battery cell 140 is prevented from falling off during handling, further improving the clamping stability of the device.

[0032] Please refer to this carefully. Figure 1 , Figure 3 as well as Figure 4 As shown, the protective assembly 200 includes nitrogen tanks 210 fixedly installed on both sides of the upper surface of the fixed plate 110. Each nitrogen tank 210 is fixedly connected to a connecting pipe 220 at the bottom outer side. The connecting pipe 220 extends through into the interior of the placement frame 120. An air pump is installed at the other end of the connecting pipe 220. An air blowing port 230 is fixedly installed at the lower inner side of the placement frame 120. The air blowing port 230 communicates with the inner cavity of the placement frame 120. A square baffle 240 is fixedly installed at the bottom of the placement frame 120.

[0033] During welding, the air pump is started to draw nitrogen from the nitrogen tank 210 and enters the internal space of the placement frame 120 through the first connecting pipe 220. The nitrogen is discharged from the air blowing ports 230 on both sides, so that the entire welding environment is filled with inert protective gas to avoid oxidation of the manifold during the high-temperature welding process, thereby ensuring better and more stable welding results. By setting the square baffle 240, the nitrogen flows in the welding area for a longer time when it is discharged from the air blowing port 230, further improving the welding effect and stability.

[0034] In use, a mobile robotic arm uses a clamping assembly 300 to grasp several horizontally placed groups of battery cells 140 and rotates them 90 degrees at their positive and negative ends to align them with the positive current collector 131 on the positive current collector tray 130 and the negative current collector 151 on the negative current collector tray 150 for welding. While the clamping assembly 300 is grasping the battery cells 140, a motor 340 is started, driving two sets of bidirectional threaded screws 320 to rotate synchronously via a belt 330. This causes two sets of threaded moving plates 350 to move relative to each other, bringing the connecting posts 360 and arc-shaped clamping plates 370 fixedly connected to the moving plates 350 closer together until the corresponding groups of battery cells 140 are clamped. The cells are then transported to the positive current collector 131, while the clamping assembly 300 remains stationary, ensuring proper alignment between the battery cells 140 and the positive current collector. The tight fit between the disks 131 provides a fixing and squeezing effect. By designing the clamping component 300, multiple sets of battery cells 140 can be transported at one time, improving transport efficiency. At the same time, multiple sets of laser emitting heads 160 are activated to weld them, improving overall production efficiency. Furthermore, the clamping component 300 is used to fix and squeeze the battery cells 140 to the positive current collector disk 131 or the negative current collector disk 151, thereby achieving a tight fit. This prevents a large amount of sparks from being generated during laser welding and causing oxidation on the current collector disk, which would result in poor welding effect. This device can replace manual operation and ensures that the current collector disk will not shift during welding, thus ensuring the welding quality between the current collector disk and the end of the battery cell 140 and will not affect the subsequent battery manufacturing process. The parts of this device not mentioned are the same as or can be implemented using existing technologies.

[0035] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. A cell gripping current collector welding assembly, comprising two sets of mounting plate bodies (100), characterized in that: A fixing plate (110) is fixedly connected to one side of each of the two sets of mounting plate bodies (100). A placement frame (120) is fixedly connected to the side of each of the two sets of fixing plates (110) away from the mounting plate body (100). A positive electrode current collector tray (130) is fixedly installed inside one set of placement frames (120), and a negative electrode current collector tray (150) is fixedly installed inside the other set of placement frames (120). A protective component (200) is provided inside the placement frame (120), and a clamping component (300) is provided above the placement frame (120). A mobile robotic arm is connected to the clamping component (300). The clamping assembly (300) includes a clamping frame (310) for externally connected mobile robotic arms. Both ends of the inner cavity of the clamping frame (310) are provided with bidirectional threaded screws (320) in the transverse direction. Both ends of the two sets of bidirectional threaded screws (320) are threadedly connected to moving plates (350). Several sets of equidistantly distributed connecting posts (360) are fixedly connected to the opposite side of the two sets of moving plates (350). The other end of each set of connecting posts (360) passes through the inner side of the clamping frame (310) and is fixedly connected to an arc-shaped clamping plate (370).

2. The cell gripping current collector welding assembly according to claim 1, characterized in that: Both sets of bidirectional threaded screws (320) extend through one end to the outside of the clamping frame (310), and their outer walls are fixedly fitted with pulleys. The two sets of pulleys are connected by a belt (330). One end of one set of bidirectional threaded screws (320) is equipped with a motor (340). The output end of the motor (340) is fixedly connected to one end of the bidirectional threaded screw (320) through a coupling, and the motor (340) is fixedly connected to one side of the clamping frame (310) through a fixed base.

3. The cell gripping current collector welding assembly according to claim 1, characterized in that: The clamping surfaces of several sets of the arc-shaped clamps (370) are all provided with anti-slip textures.

4. The cell gripping current collector welding assembly according to claim 1, characterized in that: The protective assembly (200) includes nitrogen tanks (210) fixedly installed on both sides of the upper surface of the fixed plate (110). Each nitrogen tank (210) is fixedly connected to a connecting pipe (220) at the bottom outer side. The connecting pipe (220) extends through into the placement frame (120). An air pump is installed at the other end of the connecting pipe (220).

5. The cell gripping current collector welding assembly according to claim 4, characterized in that: An air inlet (230) is fixedly installed on the lower inner side of the placement frame (120), and the air inlet (230) is connected to the inner cavity of the placement frame (120). A square baffle (240) is fixedly installed on the bottom of the placement frame (120).

6. The cell gripping current collector welding assembly according to claim 1, characterized in that: The positive current collector tray (130) has several sets of equidistant positive current collectors (131), the negative current collector tray (150) has several sets of equidistant negative current collectors (151), and the positive current collectors (131) and negative current collectors (151) have battery cells (140) placed on them.

7. The cell gripping current collector welding assembly according to claim 6, characterized in that: The bottom of the positive current collector tray (130) and the negative current collector tray (150) are provided with several sets of equidistant through holes (170), and a laser emitting head (160) is provided directly below each set of through holes (170).

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