Composite current collector resistance welding machine workbench

Abstract

The utility model discloses a composite current collector resistance welding machine workbench which comprises a welding electrode tip, a first battery cell supporting plate and a second battery cell supporting plate. The second battery cell supporting plate is horizontally installed at the top of the force bearing plate, a battery cell to be processed is supported at the top of the second battery cell supporting plate, the top of the battery cell to be processed is in contact with a welding electrode head of the suspension, the top of the welding electrode head is in butt joint with a lifting carrier through a welding electrode base, and a second air cylinder is installed along the top of the lifting carrier; a driving port of the second air cylinder is in transmission butt joint with the lifting carrier through a driving shaft; a supporting table is horizontally installed on the side edge of the force bearing plate, and a shaping mechanism is installed on the top of the supporting table. According to the composite current collector resistance welding machine workbench, the technical problem that welding is affected when a battery cell with a diaphragm or a composite current collector is not subjected to shaping machining is solved through resistance welding and a double-station machining treatment structure of a shaping platform; and the shaping pressing plate for longitudinal positioning shaping machining completes the fixed-point pre-punching machining procedure, and the machining precision of follow-up welding can be improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of resistance welding equipment, and in particular relates to a composite current collector resistance welding machine workbench. Background Art

[0002] The current collectors in common lithium-ion batteries are mainly divided into two categories, one is pure metal foil as the current collector, and the other is a composite current collector. The composite current collector has the function of reducing the mass of the current collector per unit area, thereby achieving high energy density and lightweight of lithium batteries.

[0003] In the current power and consumer battery cell welding, cells with diaphragms or composite current collectors are used. However, welding is difficult due to the lack of conductivity between the composite current collectors.

[0004] Therefore, the present application provides a composite current collector resistance welding machine workbench, which solves the technical problem of affecting welding of battery cells with diaphragms or composite current collectors without shaping processing through the dual-station processing structure of resistance welding and shaping platform; the shaping pressure plate for longitudinal positioning shaping processing completes the fixed-point pre-punching processing process, which can improve the processing accuracy of subsequent welding and further improve the welding yield rate of the battery cells. Summary of the invention

[0005] In order to achieve the above object, the technical solution of the utility model is as follows:

[0006] A composite current collector resistance welding machine workbench comprises a welding electrode head, a first battery cell support plate and a second battery cell support plate; the second battery cell support plate is horizontally installed on the top of a bearing plate, a battery cell to be processed is supported on the top of the second battery cell support plate, the top of the battery cell to be processed is in resistance welding contact with the welding electrode head of a suspension, the top of the welding electrode head is butted with a lifting carrier through a welding electrode seat, a second cylinder is installed along the top of the lifting carrier, and a driving port of the second cylinder is transmission-butted with the lifting carrier through a driving shaft;

[0007] A support platform is horizontally installed on the side of the bearing plate, and a shaping mechanism is installed on the top of the support platform.

[0008] Furthermore, a first battery cell tray is horizontally laid on the top of the support platform, a battery cell to be processed is supported in the center of the first battery cell tray, a shaping pressure plate is suspended on the top of the first battery cell tray, the shaping pressure plate is suspended on the bottom end face of the shaping carrier, a first cylinder is installed on the top of the shaping carrier, and the bottom driving end of the first cylinder is connected to the shaping pressure plate for transmission.

[0009] Furthermore, a shaping cone needle is installed at the bottom of the shaping plate, and the shaping cone needle is in vertical contact with the battery cell to be processed;

[0010] Two sets of alignment shafts are vertically installed along the rear end face of the shaping cone needle at the bottom end face of the shaping pressing plate and are positioned and docked with the guiding docking holes on the upper end face of the first battery cell support plate.

[0011] Furthermore, the second air cylinder is fixedly installed on the top of the welding carrier box. An equipment box is installed on the back of the welding carrier box. The power supply pipeline and the air supply pipeline built in the equipment box are connected to the first air cylinder, the second air cylinder and the welding electrode seat.

[0012] Furthermore, an adjustment table is installed between the load-bearing plate and the second battery cell support plate.

[0013] Furthermore, the shaping cone needles in the shaping area covered by the first battery cell support plate include a single-cone needle structure and a multi-cone needle structure;

[0014] The welding area of the battery cell to be processed that matches the shaping cone needle is between 1 square millimeter and 500 square millimeters.

[0015] The beneficial effects of the present utility model are as follows:

[0016] Compared with the prior art, the present application provides a workbench for a composite current collector resistance welder. Through the double-station processing structure of resistance welding and the shaping platform, the technical problem that the welding is affected by the unshaped processing of the battery cell with a diaphragm or a composite current collector is solved; the shaping pressing plate for longitudinal positioning and shaping processing completes the fixed-point pre-perforation processing procedure, which can improve the processing accuracy of subsequent welding and further improve the welding yield of the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic structural diagram of a workbench for a composite current collector resistance welder of the present utility model.

[0018] Figure 2 It is a front view of a workbench for a composite current collector resistance welder of the present utility model.

[0019] Figure 3 It is a front view of the shaping pressing plate of a workbench for a composite current collector resistance welder of the present utility model.

[0020] LIST OF REFERENCE NUMERALS IN THE DRAWINGS:

[0021] 1 is an equipment box, 2 is a first air cylinder, 3 is a first battery cell support plate, 4 is a support table, 5 is a load-bearing plate, 6 is an adjustment table, 7 is a second battery cell support plate, 8 is a welding electrode head, 9 is a welding electrode seat, 10 is a lifting carrier, 11 is a welding carrier box, 12 is a second air cylinder, 13 is a shaping carrier plate, 14 is a shaping pressing plate, 14-1 is an alignment shaft, 14-2 is a shaping cone needle, 15 is a mounting bolt. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The present utility model will be further illustrated below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model.

[0023] As Figure 1 、 Figure 2 and Figure 3 shown, a workbench for a composite current collector resistance welder includes a welding electrode head, a first cell support plate, and a second cell support plate; the second cell support plate 7 is horizontally installed on the top of the load-bearing plate 5, the top of the second cell support plate 7 supports a cell to be processed, the top of the cell to be processed is in resistance welding contact with the welding electrode head 8 of the suspension, the top of the welding electrode head 8 is docked with the lifting carrier 10 through the welding electrode seat 9, the lifting carrier 10 is installed with a second cylinder 12 along the top, and the driving port of the second cylinder 12 is in transmission docking with the lifting carrier 10 through a drive shaft; wherein, the second cell support plate 7 serves as a stable support plate during the welding process, and the cell to be processed is placed in the storage groove at the center position of the second cell support plate 7 to complete the welding positioning process. The lifting carrier 10 cooperates with the second cylinder 12 to lift and weld sequentially. The welding electrode head 8 serves as a loading structure for the welding electrode seat 9, and the welding electrode seat 9 can be replaced with a suitable welding electrode head 8 according to the welding requirements.

[0024] A support platform 4 is horizontally installed on the side of the load-bearing plate 5, and a shaping mechanism is installed on the top of the support platform 4. Among them, the shaping mechanism serves as a shaping device for pre-perforating the cell.

[0025] As Figure 1 、 Figure 2 and Figure 3 shown, a first cell support plate 3 is horizontally laid on the top of the support platform 4, the center of the first cell support plate 3 supports a cell to be processed, a shaping pressing plate 14 is suspended above the first cell support plate 3, the shaping pressing plate 14 is suspended at the bottom end face of the shaping carrier plate 13, and a first cylinder 2 is installed on the top of the shaping carrier plate 13, and the bottom driving end of the first cylinder 2 is in transmission docking with the shaping pressing plate 14. Among them, the shaping pressing plate 14 is a carrier with a pre-perforating device, and the shaping carrier plate 13 serves as a supporting carrier for the combined installation of the first cylinder 2 and the shaping pressing plate 14.

[0026] As Figure 1 、 Figure 2 and Figure 3 shown, a shaping cone needle 14-2 is installed at the bottom of the shaping pressing plate 14, and the shaping cone needle 14-2 is in vertical contact with the cell to be processed; two groups of alignment shafts 14-1 are vertically installed on the bottom end face of the shaping pressing plate 14 along the rear end face of the shaping cone needle 14-2 and are in positioning docking with the guiding docking holes on the upper end face of the first cell support plate 3. Among them, the shaping cone needle 14-2 cooperates with the alignment shafts 14-1 to complete the positioning and fixed-point pre-perforation processing of the cell.

[0027] As Figure 1 , Figure 2 and Figure 3 shown, the second cylinder 12 is fixedly installed on the top of the welding carrier box 11, and an equipment box 1 is installed on the back of the welding carrier box 11. The power supply pipeline and the gas supply pipeline built in the equipment box 1 are connected to the first cylinder 2, the second cylinder 12 and the welding electrode base 9. Among them, a power supply and a gas pump device for supplying gas are installed in the equipment box 1.

[0028] As Figure 1 , Figure 2 and Figure 3 shown, an adjusting table 6 is installed between the bearing plate 5 and the second battery cell support plate 7. Among them, the adjusting table 6 can adjust the height of the battery cell loading to adapt to the welding processing positions of different sizes.

[0029] As Figure 1 , Figure 2 and Figure 3 shown, the shaping cone pins 14-2 in the shaping area covered by the first battery cell support plate 3 include a single cone pin structure and a multi-cone pin structure;

[0030] The welding area of the battery cell to be processed matched by the shaping cone pins (14-2) is between 1 square millimeter and 500 square millimeters.

[0031] Working principle:

[0032] This welding method is divided into a shaping mechanism and a welding machine. There are 3 conical teeth on the upper side of the shaping mechanism and 3 holes on the lower side, which can realize the pre-perforation of each layer of ear tabs; 2. After perforation, the external feeding robotic arm can move the battery cell to the welding position. At the same time, the connecting piece with 3 auxiliary bumps is inserted into the hole just shaped, and the upper and lower electrode heads are pressed for resistance welding.

[0033] It should be noted that the above content only illustrates the technical idea of the present invention and cannot be used to limit the protection scope of the present invention. For those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches can be made, and these improvements and retouches all fall within the protection scope of the claims of the present invention.

Claims

1. A working table of a composite current collector resistance welder, comprising a welding electrode head, a first battery cell support plate and a second battery cell support plate; characterized in that: The second battery cell support plate (7) is horizontally installed on the top of the load-bearing plate (5). The top of the second battery cell support plate (7) supports a battery cell to be processed. The top of the battery cell to be processed is in resistance welding contact with the welding electrode head (8) of the suspension. The top of the welding electrode head (8) is docked with the lifting carrier (10) through the welding electrode base (9). A second cylinder (12) is installed along the top of the lifting carrier (10), and the driving port of the second cylinder (12) is in transmission docking with the lifting carrier (10) through a drive shaft; A support table (4) is horizontally installed on the side of the load-bearing plate (5), and a shaping mechanism is installed on the top of the support table (4).

2. The workbench of a composite current collector resistance welding machine according to claim 1, characterized in that: A first battery cell support plate (3) is horizontally laid on the top of the support table (4). The center of the first battery cell support plate (3) supports a battery cell to be processed. A shaping pressing plate (14) is suspended above the first battery cell support plate (3). The shaping pressing plate (14) is suspended at the bottom end face of the shaping carrier plate (13). A first cylinder (2) is installed on the top of the shaping carrier plate (13), and the bottom driving end of the first cylinder (2) is in transmission docking with the shaping pressing plate (14).

3. The workbench of a composite current collector resistance welding machine according to claim 2, characterized in that: A shaping cone needle (14-2) is installed at the bottom of the shaping pressing plate (14), and the shaping cone needle (14-2) is in vertical contact with the battery cell to be processed; Two groups of alignment shafts (14-1) are vertically installed along the rear end face of the shaping cone needle (14-2) at the bottom end face of the shaping pressing plate (14) and are in positioning docking with the guiding docking holes on the upper end face of the first battery cell support plate (3).

4. The workbench of a composite current collector resistance welding machine according to claim 1, characterized in that: The second cylinder (12) is fixedly installed on the top of the welding carrier box (11). An equipment box (1) is installed on the back of the welding carrier box (11). The power supply pipeline and the air supply pipeline built in the equipment box (1) are connected to the first cylinder (2), the second cylinder (12), and the welding electrode base (9).

5. The workbench of a composite current collector resistance welding machine according to claim 1, characterized in that: An adjustment table (6) is installed between the load-bearing plate (5) and the second battery cell support plate (7).

6. The workbench of a composite current collector resistance welding machine according to claim 1, characterized in that: The shaping cone needles (14-2) in the shaping area covered by the first battery cell support plate (3) include a single cone needle structure and a multi-cone needle structure; The welding area of the battery cell to be processed matched by the shaping cone needle (14-2) is between 1 square millimeter and 500 square millimeters.

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