Battery casing and welding device

Abstract

The utility model relates to the technical field of battery production, in particular to a battery casing and welding device. The utility model provides a battery casing and welding device which comprises a casing conveying mechanism, a welding mechanism and a welding mechanism. The battery cell conveying mechanism is suitable for conveying battery cells; the clamp is suitable for clamping and positioning the shell output by the shell conveying mechanism; the in-shell press-fitting assembly is suitable for placing the battery cell into the shell clamped by the clamp and pressing a top cover of the battery cell and the shell to form a battery assembly; the welding device is suitable for welding the top cover and the shell together; the clamps are arranged on the circulating conveying line, and the circulating conveying line is used for conveying the clamps in a circulating mode; wherein the circulating conveying line at least sequentially passes through the in-shell press-fitting assembly and the welding device. Through the arrangement, the battery casing and welding device provided by the utility model can solve the problems of complex structure, lower production efficiency and low product percent of pass of a battery production device in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of battery production, in particular to a battery shell inserting and welding device. Background Art

[0002] The lithium battery comprises a battery cell, a top cover and a shell, and the production method thereof comprises the following steps: S1, pre-welding the battery cell to the top cover; S2, placing the battery cell into the shell; S3, pressing the top cover and the shell together; S4, welding the shell and the top cover by laser welding.

[0003] In the prior art, the workstations for the cell shelling process and the top cover press-fitting process are arranged independently and separately, and a separate manipulator or transfer structure is required to transfer the battery between the two. Moreover, in the welding process of the shell and the top cover, the pressed battery is usually first placed in a pre-spot welding fixture for spot welding to fix the position of the top cover and the aluminum shell to prevent its position from changing during transportation. After the spot welding is completed, it is transferred to the sealing welding fixture for full welding of the top.

[0004] This results in a complex structure of the battery production device, low production efficiency, and is prone to poor welding in the pre-spot welding process, resulting in a lower product qualification rate. Utility Model Content

[0005] The utility model provides a battery shell inserting and welding device, which can solve the problems of complex structure, low production efficiency and low product qualification rate of battery production devices in the prior art.

[0006] The first aspect of the utility model provides a battery shell insertion and welding device, comprising:

[0007] A shell conveying mechanism, suitable for conveying the shell;

[0008] A battery cell conveying mechanism, suitable for conveying the battery cells;

[0009] A clamp, adapted to clamp and position the shell output by the shell conveying mechanism;

[0010] A shell-into-shell press-fit assembly, adapted to place the battery cell into the shell held by the fixture, and press the top cover of the battery cell with the shell to form a battery assembly;

[0011] A welding device, adapted to weld the top cover and the shell together;

[0012] A circulating conveyor line, wherein the fixture is arranged on the circulating conveyor line, and the circulating conveyor line is used to circulate the fixture; wherein the circulating conveyor line at least passes through the shell-into-press assembly and the welding device in sequence.

[0013] The battery shell inserting and welding device provided by the utility model also includes:

[0014] The shell processing device is suitable for performing dust removal on the shell and conveying the shell into the fixture.

[0015] The battery shell inserting and welding device provided by the utility model also includes:

[0016] The first detection component is arranged at the output end of the shell insertion and pressing component, and is used to detect whether the top cover is pressed into place.

[0017] The battery shell inserting and welding device provided by the utility model also includes:

[0018] Roller dust removal assembly, used for rolling and dust removal of the side of the welded battery assembly;

[0019] The second detection component is used to detect the battery component after the side rolling and dust removal are completed.

[0020] According to the battery shell insertion and welding device provided by the utility model, the second detection component includes:

[0021] An image detection component, used to obtain image information of a battery component and perform appearance detection on the battery component based on the image information of the battery component;

[0022] The electrical detection component is used to perform electrical detection on the battery component.

[0023] The battery shell inserting and welding device provided by the utility model also includes:

[0024] NG conveyor line, used to output battery components that fail the inspection;

[0025] The unloading conveyor line is used to output battery components that have passed the inspection.

[0026] According to the battery shelling and welding device provided by the utility model, the circulating conveyor line passes through the output end of the shell conveying mechanism, the shelling press-fitting assembly, the first detection assembly, the welding device, the roller dust removal assembly and the second detection assembly in sequence.

[0027] According to the battery shelling and welding device provided by the utility model, the shelling and pressing assembly includes a mounting frame, a shell positioning mechanism, a battery cell shelling mechanism and a pressing mechanism. The shell positioning mechanism is suitable for positioning the shell, and the battery cell shelling mechanism is movably arranged on the mounting frame. The battery cell shelling mechanism is suitable for grabbing the battery cell output by the battery cell conveying mechanism and placing the battery cell into the shell clamped by the clamp; the pressing mechanism is movably arranged on the mounting frame, and the pressing mechanism is suitable for pressing the top cover of the battery cell to press the top cover and the shell to form a battery assembly.

[0028] According to the battery shell insertion and welding device provided by the utility model, the welding device includes a battery positioning mechanism, a pressing mechanism and a welding mechanism. The battery positioning mechanism is suitable for positioning and fixing the battery assembly at a set position; the welding mechanism is suitable for welding the top cover and the shell together; the pressing mechanism is suitable for pressing the top cover tightly onto the shell.

[0029] According to the battery shell inserting and welding device provided by the utility model, the welding device also includes:

[0030] The top cover detection component is used to detect the height position of the top cover, and the welding mechanism controls the start and stop according to the height position of the top cover.

[0031] The battery shelling and welding device provided by the utility model includes a shell conveying mechanism, a battery cell conveying mechanism, a clamp, a shelling press-fitting assembly, a welding device and a circulating conveying line. The shell conveying mechanism conveys the shell, and the battery cell conveying mechanism is suitable for conveying the battery cell. The clamp is suitable for clamping and positioning the shell output by the shell conveying mechanism, and the clamp is arranged on the circulating conveying line and is reciprocated and circulated along a closed-loop trajectory. After the clamp is conveyed to the shelling press-fitting assembly, the battery cell is placed in the shell clamped by the clamp, and the top cover of the battery cell is pressed with the shell to form a battery assembly. Afterwards, the clamp is conveyed to the welding device, and the welding device welds the top cover and the shell together. In the battery shelling and welding device provided by the utility model, the shell is placed in the clamp, and is conveyed to the shelling press-fitting and welding link on the production line with the clamp, so that the battery assembly can be completed, and there is no need to pre-weld and transport the battery, which simplifies the device, improves production efficiency, and ensures welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 It is a top view of the overall structure of the battery shell and welding device in the embodiment of the utility model;

[0034] Figure 2 This is a schematic diagram of a circulating conveying line in an embodiment of the utility model;

[0035] Figure 3 This is a schematic diagram of a shell press-fit assembly in an embodiment of the utility model;

[0036] Figure 4 It is a schematic diagram of the shell conveying mechanism in the embodiment of the utility model.

[0037] Reference numerals:

[0038] 11. Shell conveying mechanism; 12. First shell flipping mechanism; 13. Shell dust removal mechanism; 14. Flipping feeding mechanism; 15. First detection assembly; 16. Welding device; 17. Roller dust removal assembly; 18. Second detection assembly; 19. NG conveying line; 20. Cell conveying mechanism; 21. Circulation conveying line; 22. Shell insertion and pressing assembly; 23. Unloading conveying line; 24. Clamp; 25. Mounting rack; 26. Cell shell insertion mechanism. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described clearly and completely in conjunction with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0040] In the prior art, before welding the battery, the top cover needs to be pressed against the shell, and after pre-welding the top cover and the shell, it needs to be transferred to the welding station to fully weld the top cover and the shell. Such welding equipment needs to include a pre-welding device and a transfer device, which has a complex structure and is difficult to ensure the quality of pre-welding.

[0041] In view of this, please refer to Figure 1-Figure 4 The present embodiment provides a battery shelling and welding device including a shell conveying mechanism 11 , a battery cell conveying mechanism 20 , a clamp 24 , a shelling press-fitting assembly 22 , a welding device 16 and a circulating conveying line 21 .

[0042] The shell conveying mechanism 11 is suitable for conveying the shells. In some embodiments, the shell conveying mechanism 11 adopts a conveyor belt mechanism, and the shells are output from the warehouse by the conveyor belt mechanism.

[0043] The clamp 24 is suitable for clamping and positioning the shell output by the shell conveying mechanism 11. In some embodiments, the clamp 24 includes a placement plate, a clamp block and an elastic member. The placement plate is used to place the battery. The clamp blocks are provided as a pair and are respectively provided on both sides of the placement plate. A clamping space for clamping the battery is formed between the pair of clamp blocks. At least one clamp block can be slidably provided so that the pair of clamp blocks can move closer to or away from each other. The elastic member is connected between the clamp block and the placement plate. Under the action of the elastic member, the pair of clamp blocks have a tendency to move closer to each other.

[0044] The fixture 24 is arranged on the circulating conveyor line 21, and is used to reciprocate the fixture 24 along the closed-loop track. It should be noted that, in both the shell-in-shell press-fitting process and the welding process, the shell or battery assembly is conveyed to the corresponding workstation by the circulating conveyor line 21.

[0045] In some embodiments, the shell-entering press-fitting assembly 22 includes a mounting frame 25, a shell positioning mechanism, a battery cell shell-entering mechanism 26 and a press-fitting mechanism. The shell positioning mechanism is suitable for positioning the shell, and the battery cell shell-entering mechanism 26 is movably arranged on the mounting frame 25. The battery cell shell-entering mechanism 26 is suitable for grabbing the battery cell output by the battery cell conveying mechanism 20 and placing the battery cell into the shell clamped by the clamp 24; the press-fitting mechanism is movably arranged on the mounting frame 25, and the press-fitting mechanism is suitable for press-fitting the top cover of the battery cell to press the top cover and the shell to form a battery assembly.

[0046] In some embodiments, the mounting frame 25 may be a frame structure formed by welding steel sections, such as a gantry frame.

[0047] The housing positioning mechanism is disposed on the mounting frame 25, and is suitable for clamping and fixing the housing. In some embodiments, the housing positioning mechanism can realize the positioning of the housing by clamping and fixing the housing with a movable clamp, or can realize the positioning of the housing by clamping the housing in a card slot in a clamping manner.

[0048] The battery cell shelling mechanism 26 is movably arranged on the mounting frame 25, and the battery cell shelling mechanism 26 is suitable for grabbing the battery cell and placing the battery cell into the shell. In some embodiments, the battery cell shelling mechanism 26 can adopt a manipulator device to grab the battery cell and place the battery cell into the shell.

[0049] The press-fitting mechanism is movably disposed on the mounting frame 25 , and is suitable for press-fitting the top cover of the battery cell to press the top cover with the shell, that is, the press-fitting mechanism is suitable for pressing the top cover to a position flush with the opening of the shell.

[0050] In some embodiments, the welding device 16 includes a battery positioning mechanism, a pressing mechanism, and a welding mechanism. The battery positioning mechanism is suitable for positioning and fixing the battery assembly at a set position; the pressing mechanism is suitable for applying pressure to the top cover during the welding process to keep the top cover and the shell in a pressed state, thereby ensuring the welding quality. The welding mechanism is suitable for welding the top cover and the shell together.

[0051] In some embodiments, the battery positioning mechanism includes a clamp 24 positioning component, a long side clamping component and a short side clamping component. The clamp 24 positioning component is suitable for positioning the clamp 24 at a preset position. After the clamp 24 is positioned, in order to accurately position the shell, the clamp 24 can be opened by the clamp opening component to make the battery assembly in a free state. After that, the long side clamping component presses the long side of the battery assembly to a preset position, and the short side clamping component presses the short side of the battery assembly to a preset position to achieve precise positioning of the battery assembly. After that, the top pressing mechanism of the welding device 16 presses the top cover so that the top cover is pressed against the shell. When the top pressing mechanism presses the top cover, since the battery assembly is in a free state, the problem of the battery assembly being scratched is avoided. After the top cover is pressed by the top pressing mechanism, the battery assembly is pressed again by the long side clamping component and the short side clamping component to ensure stability during the welding process.

[0052] After welding is completed, the battery assembly is transported to the inspection station for inspection along the circulating conveyor line 21, and then the battery assembly is output. After outputting the battery assembly, the clamp 24 continues to circulate along the circulating conveyor line 21 and enters the next circulation process.

[0053] With such arrangement, in the battery shelling and welding device provided in this embodiment, the shell is placed in the clamp 24 and is transported to the shelling pressing and welding link on the production line along with the clamp 24, so that the battery assembly can be completed without pre-welding and transporting the battery, which simplifies the device, improves production efficiency, and ensures welding quality.

[0054] In a further embodiment, the battery shell insertion and welding device further includes a first shell flipping mechanism 12 , a shell dust removal mechanism 13 and a flip feeding mechanism 14 .

[0055] Among them, the first shell flipping mechanism 12 is arranged at the output end of the shell conveying mechanism 11, and the first shell flipping mechanism 12 is used to flip the shell so that its opening faces downward. That is, the shell conveying mechanism 11 conveys the shell to the first shell flipping mechanism 12, and the first shell flipping mechanism 12 drives the shell to flip up and down so that the opening of the shell faces downward. In some embodiments, the first shell flipping mechanism 12 may include a carrier for carrying the shell, and a clamping device is arranged on the carrier, and the clamping device can clamp and fix the shell, and can also loosen the shell. The carrier is connected to the motor through a rotating shaft, and the motor drives the carrier to flip, thereby realizing the flipping of the shell.

[0056] The shell dust removal mechanism 13 is used to remove dust from the shell with the opening facing downward. In some embodiments, the shell dust removal mechanism 13 can achieve dust removal by means of compressed gas dust blowing or vacuum dust collection. After the dust removal is completed, the flipping feeding mechanism 14 flips the shell so that its opening faces upward, and conveys the flipped shell to the clamp 24 on the circulating conveyor line 21. In this way, the battery shell insertion and welding device 16 can automatically remove dust from the shell.

[0057] In a further embodiment, the battery shell insertion and welding device further includes a first detection component 15, which is disposed at the output end of the shell insertion press assembly 22, and is used to detect whether the top cover is pressed into place. In some embodiments, the first detection component 15 can use a laser rangefinder to measure the height of the top cover, and then determine whether the top cover is pressed into place. After pressing into place, it is transported to the welding device 16 for welding process. If it is not pressed into place, it can be output to the NG line. This ensures the quality of subsequent welding.

[0058] In a further embodiment, the battery shelling and welding device further comprises a rolling dust removal component 17 and a second detection component 18. The rolling dust removal component 17 is used to roll and remove dust from the sides of the battery component after welding.

[0059] In some embodiments, the roller dust removal assembly 17 may include a roller assembly and a dust removal assembly, and the roller assembly may rotate around the periphery of the battery assembly to roll the side of the battery assembly to ensure the connection reliability between the top rod and the shell. The dust removal assembly may remove dust by high-pressure gas, vacuum adsorption, etc.

[0060] After the rolling and dust removal is completed, the second detection component 18 can be used to detect the battery assembly after the side rolling and dust removal.

[0061] In some embodiments, the second detection component 18 includes an image detection component and an electrical detection component. The image detection component may use a CCD camera to obtain image information of the battery component, and perform appearance detection on the battery component based on the image information of the battery component. The electrical detection component is used to perform electrical detection on the battery component, such as detecting whether the battery component has short circuit, open circuit, etc.

[0062] In a further embodiment, the battery shelling and welding device further includes an NG conveyor line 19 and a blanking conveyor line 23. Battery components that fail the above-mentioned various inspection links are output through the NG conveyor line 19. Finally, qualified products are output through the blanking conveyor line 23.

[0063] In some embodiments, the above-mentioned circulating conveyor line 21 sequentially passes through the output end of the flip feeding mechanism 14, the shell pressing assembly 22, the first detection assembly 15, the welding device 16, the roller dust removal assembly 17 and the second detection assembly 18. The circulating conveyor line 21 is used to circulate the clamp 24. After the flip feeding mechanism 14 conveys the shell to the clamp 24, the circulating conveyor line 21 sequentially passes through the shell pressing assembly 22, the first detection assembly 15, the welding device 16, the roller dust removal assembly 17 and the second detection assembly 18, thereby realizing the fully automatic processing of the battery.

[0064] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A battery shelling and welding device, characterized in that: include: A shell conveying mechanism (11), adapted to convey the shell; A battery cell conveying mechanism (20), suitable for conveying battery cells; A clamp (24) adapted to clamp and position the shell output by the shell conveying mechanism (11); A shell-into-shell press-fitting assembly (22) adapted to place the battery cell into a shell held by the fixture (24), and to press the top cover of the battery cell and the shell together to form a battery assembly; A welding device (16) adapted to weld the top cover and the shell together; A circulating conveying line (21), wherein the clamp (24) is arranged on the circulating conveying line (21), and the circulating conveying line (21) is used to circulate the clamp (24); wherein the circulating conveying line (21) at least passes through the shell insertion press assembly (22) and the welding device (16) in sequence.

2. The battery shell inserting and welding device according to claim 1, characterized in that: Also includes: The shell processing device is suitable for performing dust removal processing on the shell and conveying the shell into the clamp (24).

3. The battery shell inserting and welding device according to claim 2, characterized in that: Also includes: A first detection component (15) is arranged at the output end of the shell insertion pressing component (22) and is used to detect whether the top cover is pressed into place.

4. The battery shell inserting and welding device according to claim 3, characterized in that: Also includes: A rolling dust removal assembly (17) is used to roll and remove dust from the sides of the welded battery assembly; The second detection component (18) is used to detect the battery component after the side rolling and dust removal are completed.

5. The battery shell inserting and welding device according to claim 4, characterized in that: The second detection component (18) comprises: An image detection component, used to obtain image information of a battery component and perform appearance detection on the battery component based on the image information of the battery component; The electrical detection component is used to perform electrical detection on the battery component.

6. The battery shell inserting and welding device according to claim 5, characterized in that: Also includes: NG conveying line (19), used for outputting battery components that fail the inspection; The unloading conveying line (23) is used to output the battery components that have passed the inspection.

7. The battery shell inserting and welding device according to claim 6, characterized in that: The circulating conveying line (21) passes through the output end of the shell conveying mechanism (11), the shell insertion pressing assembly (22), the first detection assembly (15), the welding device (16), the roller dust removal assembly (17) and the second detection assembly (18) in sequence.

8. The battery shell inserting and welding device according to claim 1, characterized in that: The shell insertion and pressing assembly (22) comprises a mounting frame (25), a shell positioning mechanism, a battery cell shell insertion mechanism (26) and a pressing mechanism. The shell positioning mechanism is suitable for positioning the shell. The battery cell shell insertion mechanism (26) is movably arranged on the mounting frame (25). The battery cell shell insertion mechanism (26) is suitable for grabbing the battery cell output by the battery cell conveying mechanism (20) and placing the battery cell into the shell clamped by the clamp (24). The pressing mechanism is movably arranged on the mounting frame (25). The pressing mechanism is suitable for pressing the top cover of the battery cell to press the top cover and the shell together to form a battery assembly.

9. The battery shell inserting and welding device according to claim 1, characterized in that: The welding device (16) comprises a battery positioning mechanism, a pressing mechanism and a welding mechanism. The battery positioning mechanism is suitable for positioning and fixing the battery assembly at a set position; the welding mechanism is suitable for welding the top cover and the shell together; and the pressing mechanism is suitable for pressing the top cover onto the shell.

10. The battery shell inserting and welding device according to claim 9, characterized in that: The welding device (16) further comprises: The top cover detection component is used to detect the height position of the top cover, and the welding mechanism controls the start and stop according to the height position of the top cover.

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