Cylindrical battery welding device and cylindrical battery assembly line

Abstract

The utility model belongs to the technical field of battery assembly, and particularly relates to a cylindrical battery welding device and a cylindrical battery assembly line. The cylindrical battery welding device comprises a rotary table, a feeding station, a pre-welding visual inspection station, a welding station, a post-welding visual inspection station and a discharging station are sequentially arranged on the peripheral side of the rotary table in the rotating direction of the rotary table, the pre-welding visual inspection assembly is arranged on the pre-welding visual inspection station, and the welding device is arranged on the welding station. And the post-welding visual inspection assembly is arranged at the post-welding visual inspection station. The welding positions of the battery cell and the collector plate can be detected by arranging the pre-welding visual inspection assembly, the accuracy of the welding positions is guaranteed, the quality of the battery cell and the collector plate after welding is detected by arranging the post-welding visual inspection assembly, unqualified products are prevented from flowing into the next procedure, and the production efficiency is improved. And the post-welding visual inspection assembly can feed back the detected defects to the welding device forwards according to the detected defects, the welding device is guided to weld more accurately, and the yield of products is increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery assembly technical field especially relates to a cylindrical battery welding device and cylindrical battery assembly line. BACKGROUND

[0002] Lithium ion batteries are divided into winding and laminating according to internal manufacturing process and structural features, wherein winding cylindrical lithium ion batteries adopt full tab structure, and the tabs are rubbed flat at the outer ends of positive and negative electrode sheets, and the tabs are rubbed flat through ultrasonic or mechanical mode, and the current collector disc is connected with the tabs through laser welding on the tab rubbing plane.

[0003] Lithium ion batteries are widely used in electric vehicles, space satellites and other fields due to the advantages of green environmental protection, high energy and long cycle life, and the market demand is also increasingly strong, so higher and more stringent requirements are put forward for the quality and efficiency of laser welding of tabs and current collector discs. SUMMARY

[0004] The utility model discloses a cylindrical battery welding device and cylindrical battery assembly line can weld the electric core and current collector disc of cylindrical battery, and guarantee the accuracy of welding position, can avoid unqualified product to flow into the next process, can also guide the welding device to weld more accurately, improve the yield of product.

[0005] To achieve this purpose, the utility model adopts the following technical scheme:

[0006] The cylindrical battery welding device comprises:

[0007] The rotating table is provided with a plurality of jigs distributed along the circumferential direction of the rotating table on the outer peripheral wall, and the jigs are used for fixing the electric core; the peripheral side of the rotating table is sequentially provided with a feeding station, a pre-welding visual detection station, a welding station, a post-welding visual detection station and a discharging station along the rotating direction of the rotating table;

[0008] The feeding station is used for feeding the current collector disc to the jigs; the pre-welding visual detection assembly is arranged at the pre-welding visual detection station, and is used for detecting the welding position of the electric core and the current collector disc; the welding device is arranged at the welding station, and is used for welding the electric core and the current collector disc; the post-welding visual detection assembly is arranged at the post-welding visual detection station, and is used for detecting the electric core and the current collector disc after welding; and the discharging station is used for discharging the welded electric core and current collector disc from the jigs.

[0009] The utility model has the advantages of:

[0010] The utility model provides a cylindrical battery welding set, can carry out the welding to the electric core and current collecting disc of cylindrical battery, and can detect the welding position of electric core and current collecting disc through setting before welding visual inspection component, guarantee the accuracy of welding position, detect the quality after the welding of electric core and current collecting disc through setting after welding visual inspection component, avoid the unqualified product to flow into next working procedure, and after welding visual inspection component can also feed back to welding set according to the detected defect, guide welding set to weld more accurately, improve the yield of product. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 It is the structure schematic diagram of cylindrical battery welding set provided by the utility model embodiment;

[0012] Figure 2 It is the plan view of cylindrical battery welding set provided by the utility model embodiment;

[0013] Figure 3 It is the structure schematic diagram of before welding visual inspection component related in the utility model embodiment;

[0014] Figure 4 It is the structure schematic diagram of after welding visual inspection component related in the utility model embodiment.

[0015] In the drawing:

[0016] 10, turntable;20, jig;30, before welding visual inspection component;31, first support;32, first camera;33, first lens;34, first light source;35, first camera connecting seat;36, first light source connecting seat;40, welding mechanism;50, after welding visual inspection component;51, second support;52, second camera;53, second lens;54, second light source;541, dome light source;542, plane light source;55, second camera connecting seat;56, second light source connecting seat;

[0017] 1, feeding station;2, before welding visual inspection station;3, welding station;4, after welding visual inspection station;5, discharging station. DETAILED DESCRIPTION

[0018] The utility model makes further detailed explanation in combination with the drawings and embodiment. It can be understood that the specific embodiment described here is only used to explain the utility model, and is not limited to the utility model. In addition, it needs to be explained that, in order to facilitate the description, only the part related to the utility model is shown in the drawing, not all structures.

[0019] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can pass through the indirect connection of intermediate medium, can be two elements internal communication or two element mutual action relation.For the ordinary skill in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0020] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the direct contact of the first and second features, also can include the contact of the first and second features not direct contact but through the contact between other features between them.Moreover, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the horizontal height of the first feature is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the horizontal height of the first feature is less than the second feature.

[0021] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "right", etc.is based on the orientation or position relationship shown in the drawing, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0022] As Figures 1 to 4The utility model provides a cylindrical battery welding device, including turntable 10, before welding visual inspection component 30, welding mechanism 40 and after welding visual inspection component 50, the outer peripheral wall of turntable 10 is provided with a plurality of along the circumferential direction interval distribution of fixture 20 of turntable 10, and the fixture 20 is used for fixed core;The side of turntable 10 is sequentially provided with loading station 1, before welding visual inspection station 2, welding station 3, after welding visual inspection station 4 and unloading station 5 along the rotation direction of turntable 10.Loading station 1 is used to load the current collector to fixture 20;Before welding visual inspection component 30 is arranged at before welding visual inspection station 2, and before welding visual inspection component 30 is used to detect the welding position of core and current collector;Welding mechanism 40 is arranged at welding station 3, and welding mechanism 40 is used to weld core and current collector according to the detection result of before welding visual inspection component 30;After welding visual inspection component 50 is arranged at after welding visual inspection station 4, and after welding visual inspection component 50 is used to detect the quality of core and current collector after welding;Unloading station 5 is used to unload the core and current collector after welding from fixture 20.

[0023] Turntable 10 rotates, can drive a plurality of fixture 20 switches in loading station 1, before welding visual inspection station 2, welding station 3, after welding visual inspection station 4 and unloading station 5.When fixture 20 rotates to loading station 1, loading mechanism (for example manipulator) loads current collector to fixture 20, at this time core has been fixed on fixture 20;Turntable 10 continues to rotate, and the fixture 20 that has completed current collector loading rotates to before welding visual inspection station 2, and before welding visual inspection component 30 detects the welding position of core and current collector, and transmits the detection result to welding mechanism 40;Turntable 10 continues to rotate, and the fixture 20 that has completed welding visual inspection rotates to welding station 3, and welding mechanism 40 welds core and current collector;Turntable 10 continues to rotate, and the fixture 20 that has completed welding rotates to after welding visual inspection station 4, and after welding visual inspection component 50 detects the quality of core and current collector after welding;After detection, turntable 10 continues to rotate, and the fixture 20 that has completed after welding quality detection rotates to unloading station 5, and unloading mechanism (for example manipulator) unloads the core and current collector after welding from fixture 20, for the core of quality detection qualified continue to flow into next procedure, for the core of quality detection unqualified to be rejected.

[0024] By adopting the cylindrical battery welding device, the battery cell and the current collecting disc of the cylindrical battery can be welded, and by arranging the pre-welding visual detection assembly 30, the welding position of the battery cell and the current collecting disc can be detected, so as to ensure the accuracy of the welding position. The post-welding visual detection assembly 50 is arranged to detect the quality of the battery cell and the current collecting disc after welding, so as to avoid unqualified products from flowing into the next process. In addition, the post-welding visual detection assembly 50 can also feed back the detected defects to the welding mechanism 40, so as to guide the welding mechanism 40 to weld more accurately, thereby improving the yield of products.

[0025] With reference to Figure 3 In the embodiment, the pre-welding visual detection assembly 30 includes a first support 31, a first camera 32, a first lens 33 and a first light source 34. The first camera 32 is arranged on the first support 31, the first lens 33 is installed on the first camera 32, and the first light source 34 is arranged on the first support 31 and located directly below the first lens 33. The first camera 32 can take a photo of the battery cell and the current collecting disc on the jig 20 through the first lens 33, and the first light source 34 is used to illuminate the battery cell and the current collecting disc on the jig 20, so that the photo taken by the first camera 32 is clearer. Optionally, the first camera 32 is an industrial area array camera, and the first light source 34 is a 45° ring-shaped light source.

[0026] In the embodiment, the vertical distance between the lower end of the first lens 33 and the battery cell on the jig 20 is 219mm-239mm, and is preferably 229mm. The vertical distance between the light emitting end of the first light source 34 and the battery cell on the jig 20 is 180mm-220mm, and is preferably 200mm.

[0027] In the embodiment, the first camera 32 can be adjusted in position relative to the first support 31 in the up-down direction, and / or the first light source 34 can be adjusted in position relative to the first support 31 in the up-down direction. By this arrangement, the first lens 33 and the battery cell on the jig 20, and the light emitting end of the first light source 34 and the battery cell on the jig 20 can be adjusted to the optimal distance.

[0028] In the embodiment, the first camera 32 is installed on the first support 31 through a first camera mounting seat 35, and the first light source 34 is installed on the first support 31 through a first light source mounting seat 36. Optionally, a strip-shaped hole extending in the up-down direction can be formed on the first camera mounting seat 35, and a fastening hole is formed on the first support 31. A fastener is inserted through the strip-shaped hole and fastened to the fastening hole, so as to realize the position adjustment of the first camera 32 relative to the first support 31 in the up-down direction. Similarly, a strip-shaped hole extending in the up-down direction can be formed on the first light source mounting seat 36, and a fastening hole is formed on the first support 31. A fastener is inserted through the strip-shaped hole and fastened to the fastening hole, so as to realize the position adjustment of the first light source 34 relative to the first support 31 in the up-down direction. The above is only an exemplary description, and is not limited thereto.

[0029] Referring to Figure 4 In this embodiment, the post-weld visual inspection assembly 50 comprises a second bracket 51, a second camera 52, a second lens 53 and a second light source 54. The second camera 52 is arranged on the second bracket 51, the second lens 53 is installed on the second camera 52, and the second light source 54 is arranged on the second bracket 51 and located directly below the second lens 53. The second camera 52 can take photos of the battery cell and the current collector on the jig 20 through the second lens 53, and the second light source 54 is used to illuminate the battery cell and the current collector on the jig 20, so that the photos taken by the second camera 52 are clearer. Optionally, the second camera 52 is an industrial area array camera, the second lens 53 is an industrial FA lens, and the second light source 54 comprises a dome light source 541 and a plane light source 542 arranged at the lower end of the dome light source 541.

[0030] In this embodiment, the distance between the lower end of the second lens 53 and the battery cell on the jig 20 is 210mm-250mm, and preferably 230mm. The distance between the top end of the dome light source 541 and the battery cell on the jig 20 is 90mm-130mm, and preferably 110mm. The distance between the plane light source 542 and the battery cell on the jig 20 is 10mm-50mm, and preferably 30mm.

[0031] In this embodiment, the second camera 52 can be adjusted in position relative to the second bracket 51 in the up-down direction, and / or the second light source 54 can be adjusted in position relative to the second bracket 51 in the up-down direction. Through this arrangement, the second lens 53, the top end of the dome light source 541 and the plane light source 542 can be adjusted to the optimal distance from the battery cell on the jig 20.

[0032] In this embodiment, the second camera 52 is installed on the second bracket 51 through a second camera mounting seat 55, and the second light source 54 is installed on the second bracket 51 through a second light source mounting seat 56. Optionally, a strip-shaped hole extending in the up-down direction can be formed on the second camera mounting seat 55, a fastening hole is formed on the second bracket 51, a fastener is passed through the strip-shaped hole and fastened to the fastening hole, thereby achieving the position adjustment of the second camera 52 relative to the second bracket 51 in the up-down direction. Similarly, a strip-shaped hole extending in the up-down direction can be formed on the second light source mounting seat 56, a fastening hole is formed on the second bracket 51, a fastener is passed through the strip-shaped hole and fastened to the fastening hole, thereby achieving the position adjustment of the second light source 54 relative to the second bracket 51 in the up-down direction. The above is only an exemplary illustration, and is not limited thereto.

[0033] The utility model also provides a cylindrical battery assembly line, including above-mentioned cylindrical battery welding device.

[0034] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. Here, it is not necessary and also impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claim.

Claims

1. A cylindrical battery welding device, characterized in that, include: The turntable (10), the pre-welding visual inspection assembly (30), the welding mechanism (40), and the post-welding visual inspection assembly (50) are provided. The outer peripheral wall of the turntable (10) is provided with a plurality of fixtures (20) spaced apart along the circumferential direction of the turntable (10). The fixtures (20) are used to fix the battery cells. The circumference of the turntable (10) along the rotation direction of the turntable (10) is provided with a loading station (1), a pre-welding visual inspection station (2), a welding station (3), a post-welding visual inspection station (4), and a unloading station (5). The loading station (1) is used to load the current collector onto the fixture (20); the pre-welding visual inspection component (30) is located at the pre-welding visual inspection station (2) and is used to inspect the welding position of the battery cell and the current collector; the welding mechanism (40) is located at the welding station (3) and is used to weld the battery cell and the current collector; the post-welding visual inspection component (50) is located at the post-welding visual inspection station (4) and is used to inspect the welded battery cell and the current collector; the unloading station (5) is used to unload the welded battery cell and the current collector from the fixture (20).

2. The cylindrical battery welding apparatus according to claim 1, characterized in that, The pre-welding visual inspection component (30) includes a first bracket (31), a first camera (32), a first lens (33), and a first light source (34). The first camera (32) is disposed on the first bracket (31), the first lens (33) is mounted on the first camera (32), and the first light source (34) is disposed on the first bracket (31) and located directly below the first lens (33).

3. The cylindrical battery welding apparatus according to claim 2, characterized in that, The first camera (32) is capable of being positioned relative to the first bracket (31) in the vertical direction; and / or, the first light source (34) is capable of being positioned relative to the first bracket (31) in the vertical direction.

4. The cylindrical battery welding apparatus according to claim 2, characterized in that, The first camera (32) is an industrial area array camera, and the first light source (34) is a 45° ring light source.

5. The cylindrical battery welding apparatus according to claim 2, characterized in that, The vertical distance between the lower end of the first lens (33) and the battery cell on the fixture (20) is 219mm-239mm, and the vertical distance between the light-emitting end of the first light source (34) and the battery cell on the fixture (20) is 180mm-220mm.

6. The cylindrical battery welding apparatus according to claim 1, characterized in that, The post-weld visual inspection component (50) includes a second bracket (51), a second camera (52), a second lens (53), and a second light source (54). The second camera (52) is disposed on the second bracket (51), the second lens (53) is mounted on the second camera (52), and the second light source (54) is disposed on the second bracket (51) and located directly below the second lens (53).

7. The cylindrical battery welding apparatus according to claim 6, characterized in that, The second camera (52) is capable of being positioned relative to the second bracket (51) in the vertical direction; and / or, the second light source (54) is capable of being positioned relative to the second bracket (51) in the vertical direction.

8. The cylindrical battery welding apparatus according to claim 6, characterized in that, The second camera (52) is an industrial area array camera, the second lens (53) is an industrial FA lens, and the second light source (54) includes a dome light source (541) and a planar light source (542) disposed at the lower end of the dome light source (541).

9. The cylindrical battery welding apparatus according to claim 8, characterized in that, The distance between the lower end of the second lens (53) and the battery cell on the fixture (20) is 210mm-250mm, the distance between the top end of the dome light source (541) and the battery cell on the fixture (20) is 90mm-130mm, and the distance between the planar light source (542) and the battery cell on the fixture (20) is 10mm-50mm.

10. A cylindrical battery assembly line, characterized in that, Includes the cylindrical battery welding apparatus according to any one of claims 1-9.

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