CN218311814U - Welding device for cylindrical battery cathode current collecting disc - Google Patents
Welding device for cylindrical battery cathode current collecting disc Download PDFInfo
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- CN218311814U CN218311814U CN202222519851.XU CN202222519851U CN218311814U CN 218311814 U CN218311814 U CN 218311814U CN 202222519851 U CN202222519851 U CN 202222519851U CN 218311814 U CN218311814 U CN 218311814U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E60/10—Energy storage using batteries
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Abstract
The utility model relates to a power battery technical field specifically, relates to a welding set that is used for cylinder battery negative pole current collector dish. When being used for among the prior art that cylinder battery and negative pole current collecting disc adopt all around to weld, both easily take place the difficult holding stability of skew in welding process, and the wayward technical problem of weld strength, the utility model provides a welding set, including be used for aligning the hold-down mechanism that compresses tightly, being used for with the positioning mechanism of cylinder battery case coaxial positioning in hold-down mechanism, be used for the welding mechanism with the circumference welded of negative pole current collecting disc and cylinder battery case with the circumference of negative pole current collecting disc and cylinder battery case. The cylindrical battery and the negative current collecting disc can be always positioned coaxially in the welding process without deviation, the welding action is stable, the welding strength is not too high, the shell is broken down, and the poor consolidation caused by too low strength is avoided.
Description
Technical Field
The utility model relates to a power battery welding production facility technical field specifically relates to a welding set that is used for cylinder battery negative pole current collector.
Background
In recent years, with the active publicity of the country and the continuous improvement of the quality of the national people, people begin to pay attention to the environmental problem around the country, actively respond to the national policies, select green trips and use public transport means; meanwhile, the sharing economy is brought to the end, and in the face of environmental problems, the social atmosphere of low-carbon travel is adhered to, so that the thought foundation is laid for the social popularization of the new energy electric vehicle. One of the cores of the electric vehicle is a battery, and the most commonly used battery in the market is a cylindrical battery. In the production of cylindrical batteries, the welding of the negative current collecting disc and the shell is a crucial part, once a fault occurs, the whole battery is scrapped, the welding of the negative current collecting disc and the shell adopts peripheral welding, the requirement on welding action is high, the welding strength is controlled to a certain extent, if the welding strength is too high, the welding can pass through, and if the welding strength is too low, the consolidation cannot be completed, and in addition, the negative current collecting disc is ensured not to deviate in the welding process and the whole welding process is kept stable.
For example, the Chinese patent application publication No. CN106129320A, the application date of 2016, 06 and 27, has the following invention names: a diffusion welding method for a multi-welding-point current collecting piece of a battery cathode; the disclosed battery current collecting piece adopts a multi-welding-point current collecting piece, the multi-welding-point current collecting piece is characterized in that a central welding point is arranged at the center of a current collecting piece main body, and 4-8 welding points are arranged on the same circumference around the central welding point at equal intervals; the welding equipment comprises an upper electrode, a lower electrode and a welding pin positioner, and the welding process is as follows: the battery core welded with the multi-welding-point current collector is placed into a battery shell, the welding pin positioner is inserted into a central hole of the battery core, the battery shell is stably placed on the center of a platform of the lower electrode, the upper electrode descends to be in contact with the welding pin positioner for welding, and all welding points on the multi-welding-point current collector are firmly welded with the bottom of the battery shell at the same time. According to the scheme, one-time multi-point welding is realized, the connection strength and reliability are guaranteed, the process of the scheme is complex, welding spots at equal intervals need to be arranged at first, the problem of accurate positioning of the negative current collecting plate during welding cannot be solved well due to the design of the multi-welding spots, and the negative current collecting plate still can move during welding.
The Chinese patent application publication number is CN112756939A, the application date is 2021, 26.01.20, and the invention name is: a spot welding mechanism for closing the cylindrical battery cover; the disclosed mechanism comprises a spot welding device, a cylinder cover aligning device and a closing cover pushing device, wherein the cylinder cover aligning device is used for adjusting the relative position between a cylinder body and a cover plate, so that the center of the cylinder body is aligned with the center of the cover plate, the closing cover pushing device is arranged on the side face of the cylinder body, the closing cover pushing device is used for pushing the cover plate into the cylinder body, the spot welding device is arranged on one side of the cylinder cover aligning device, a avoiding notch is formed in the cylinder cover aligning device, the avoiding notch is arranged towards the opening end of the cylinder body, the avoiding notch is used for allowing laser emitted by the spot welding device to pass through, and the spot welding device is used for welding the connecting part of the cylinder body and the cover plate. The cylindrical battery of this scheme closes and covers spot welding mechanism makes the battery can realize closing the lid and spot welding operation on a station through having seted up on cover aligning device and keep away a breach, but this scheme still does not solve accurate location, welds unable 360 operations.
Disclosure of Invention
1. Problems to be solved
When being used for cylinder battery and negative pole current collecting disc to adopt all borders to weld among the prior art, both easily take place the difficult stability to keep in the skew in welding process, and the difficult technical problem of control of welding strength, the utility model provides a welding set for cylinder battery negative pole current collecting disc enables cylinder battery and negative pole current collecting disc in welding process, remains coaxial positioning throughout, and the skew does not, and the welding action is stable, can not lead to welding strength too big, punctures the casing, also can not cause because of the intensity undersize to consolidate insecurely.
2. Technical scheme
In order to solve the above problem, the utility model provides a technical scheme does:
a welding device for a cylindrical battery anode current collecting disc comprises a pressing mechanism, a positioning mechanism and a welding mechanism, wherein the pressing mechanism is used for aligning and pressing the anode current collecting disc and the circumferential edge of a cylindrical battery shell, the positioning mechanism is used for coaxially positioning the cylindrical battery shell on the pressing mechanism, and the welding mechanism is used for welding the anode current collecting disc and the circumferential edge of the cylindrical battery shell; the pressing mechanism, the positioning mechanism and the welding mechanism are respectively connected to the truss;
the pressing mechanism comprises a chuck, and the chuck is driven by a driving device and can align and press the anode current collecting disc and the circumferential edge of the cylindrical battery shell.
Furthermore, the positioning mechanism comprises a lifting platform, a driving wheel fixedly connected to the lifting platform and a driven wheel movably connected to the lifting platform, and the driven wheel can be far away from or close to the driving wheel; the positioning mechanism can be far away from or close to the vertical projection position of the pressing mechanism.
Further, the chuck is a multi-jaw chuck; the multi-jaw chuck is connected to a driving device, and the driving device is connected to the truss.
Preferably, the multi-jaw chuck comprises at least three jaws. The three-jaw or more chuck can preferably apply a uniform force to the anode current collecting disk and the circumferential edge of the cylindrical battery case, preventing initial deviation.
Furthermore, the number of the driving wheels and the number of the driven wheels are at least two respectively, and the driving wheels and the driven wheels are used for clamping the cylindrical battery shell. In the course of working, two or more driving wheels and driven wheels can stably clamp the cylindrical battery shell, and accurately move in the coaxial positioning with the pressing mechanism, thereby being convenient for processing.
Further, the welding mechanism comprises a welding nozzle and a nitrogen nozzle. The welding mechanism has the advantages that the welding jet pipe and the nitrogen jet pipe of the welding mechanism can realize stable welding.
Furthermore, one end of each of the welding spray pipe and the nitrogen spray pipe is inclined downwards, and an acute angle is formed between the inclined direction of each of the welding spray pipe and the nitrogen spray pipe and the horizontal plane. Welding spray tube and nitrogen gas spray tube and horizontal plane nonparallel, so design can not make welding strength too big, punctures cylindrical battery shell.
Further, the acute angle is 25 to 35 °. Within the angle range, the cylindrical battery and the anode current collecting disc are not firmly fixed due to the fact that welding strength is too small.
Further, the truss comprises a first truss, a second truss and a third truss; the first truss is fixedly connected to the second truss, and the third truss is movably connected to the second truss; the welding mechanism is movably connected to the third truss, and the pressing mechanism is movably connected to the second truss. The design of the first truss, the second truss and the third truss can enable the welding mechanism to achieve xyz three-axis stable translation on the trusses, and further accurately control the position of the welding mechanism.
Furthermore, the pressing mechanism is connected to the second truss through a motor, and the motor is used for driving the pressing mechanism to rotate. The cylindrical battery shell is installed by a motor to perform high-precision rotation positioning, and is driven to rotate according to a program set rule during welding, so that the stability and the accuracy of welding work are further enhanced.
Further, the device also comprises a base; the first truss and the positioning mechanism are fixedly connected to the base.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the utility model discloses a welding set for cylinder battery negative pole current collector, including being used for aligning the hold-down mechanism that compresses tightly negative pole current collector and cylinder battery case's circumference, be used for with cylinder battery case coaxial positioning in hold-down mechanism's positioning mechanism, be used for the welding mechanism with negative pole current collector and cylinder battery case's circumference welded, can carry out the welding frock that high accuracy circumference was welded from the outside to negative pole current collector and cylinder battery case's circumference. The pressing mechanism comprises a chuck, the chuck is driven by a driving device and can align and press the cathode current collecting disc and the circumference of the cylindrical battery shell. Positioning mechanism includes the elevating platform, fixed connection be in action wheel and swing joint on the truss are in from the driving wheel on the elevating platform, can keep away from or be close to from the driving wheel, adopt the mode that welding machine and work piece worked respectively for the welding machine need not too much motion when carrying out the periphery welding, makes the welding more stable, simple structure and easy realization.
Drawings
FIG. 1 is a schematic view from a first perspective of a welding apparatus for an anode current collecting plate of a cylindrical battery according to example 1;
FIG. 2 is a schematic view of a second perspective of the welding apparatus for an anode current collecting plate of a cylindrical battery according to example 1;
fig. 3 is a schematic view of a first viewing angle of the driving wheel and the driven wheel of the positioning mechanism in cooperation with the cylindrical battery shell in embodiment 1;
FIG. 4 is a schematic view of an upper slider and a lower slider in the positioning mechanism according to embodiment 2.
In the figure:
1. a hold-down mechanism; 1-1, chuck; 1-2, a driving device; 1-3, a motor; 1-4, a spring; 1-5, an upper sliding block; 1-6, a lower sliding block;
2. a positioning mechanism; 2-1, a driving wheel; 2-2, driven wheel; 2-3, a lifting platform;
3. a welding mechanism; 3-1, welding a spray pipe; 3-2, a nitrogen gas spray pipe;
4. a cylindrical battery case;
5-1, a first truss; 5-2, a second truss; 5-3, a third truss;
6. a base;
7. a moving mass is moved.
Detailed Description
The invention is further described with reference to specific examples.
The technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A welding apparatus for an anode current collecting plate of a cylindrical battery according to the present embodiment, as shown in fig. 1 to 3,
comprising a pressing mechanism 1 for aligning and pressing an anode current collecting disk and the circumferential edge of a cylindrical battery case 4. The pressing mechanism 1 of the embodiment comprises a chuck 1-1, wherein the chuck 1-1 is driven by a driving device 1-2, and can align and press a negative current collecting disc and the circumference of a cylindrical battery shell 4; the chuck 1-1 is a multi-jaw chuck; the multi-jaw chuck is connected to a driving device 1-2, and the driving device 1-2 is connected to the truss. The multi-jaw chuck of the present embodiment is a three-jaw chuck. The three-jaw or more chuck 1-1 can preferably apply a uniform force to the anode current collecting disk and the circumferential edge of the cylindrical battery case 4 to prevent initial deviation.
And a positioning mechanism 2 for coaxially positioning the cylindrical battery shell 4 on the pressing mechanism 1. The positioning mechanism 2 comprises a lifting platform 2-3, a driving wheel 2-1 fixedly connected to the lifting platform 2-3 and a driven wheel 2-2 movably connected to the lifting platform 2-3, and the driven wheel 2-2 can be far away from or close to the driving wheel 2-1. In this embodiment, the driving wheel 2-1 and the driven wheel 2-2 are respectively two and used for clamping the cylindrical battery shell 4. In the processing process, more than two driving wheels 2-1 and driven wheels 202 can stably clamp the cylindrical battery shell 4 and accurately move in coaxial positioning with the pressing mechanism 1, so that the processing is facilitated.
And a welding mechanism 3 for welding the anode current collecting disk and the circumferential edge of the cylindrical battery case 4. The welding mechanism 3 of the present embodiment includes a welding nozzle 3-1 and a nitrogen nozzle 3-2. The welding nozzle 3-1 and the nitrogen nozzle 3-2 of the welding mechanism 3 can realize the stability of welding. One ends of the welding spray pipe 3-1 and the nitrogen spray pipe 3-2 are inclined downwards, an acute angle is formed between the inclined direction of the welding spray pipe 3-1 and the nitrogen spray pipe 3-2 and the horizontal plane, and the welding spray pipe 3-1 and the nitrogen spray pipe 3-2 are not parallel to the horizontal plane. The acute angle is 30 degrees, and the cylindrical battery shell 4 and the negative electrode current collecting disc are not firmly fixed due to over-low welding strength.
The pressing mechanism 1, the positioning mechanism 2 and the welding mechanism 3 are respectively connected to the truss. The trusses comprise a first truss 5-1, a second truss 5-2 and a third truss 5-3; the first truss 5-1 is fixedly connected to the second truss 5-2, and the third truss 5-3 is movably connected to the second truss 5-2; the welding mechanism 3 is movably connected to the third truss 5-3, and the pressing mechanism 1 is movably connected to the second truss 5-2. The first truss 5-1, the second truss 5-2 and the third truss 5-3 are designed to enable the welding mechanism 3 to achieve xyz three-axis stable translation on the trusses, so that the position of the welding mechanism 3 can be accurately controlled.
The pressing mechanism 1 is connected to the second truss 5-2 through a motor 1-3, and the motor 1-3 is used for driving the pressing mechanism 1 to rotate. The installation of the cylindrical battery shell is rotationally positioned by the motors 1-3 with high precision, and the cylindrical battery shell 4 is driven to rotate according to the rules set by the program during welding, so that the stability and the precision of the welding work are further enhanced.
Also comprises a base 6; the first truss 5-1 and the positioning mechanism 2 are fixedly connected to the base 6.
When the cylindrical battery shell 4 and the negative current collecting disc are welded at the periphery, the negative current collecting disc is placed in the cylindrical battery shell 4, then the cylindrical battery shell 4 is placed between a driving wheel 2-1 and a driven wheel 2-2 of the positioning mechanism 2 and is placed on a lifting table 2-3, the lifting table 2-3 moves towards the driving wheel 2-1, after the outer wall of the cylindrical battery shell 4 is contacted with the driving wheel 2-1, the driving wheel 2-1 rotates, the driven wheel 2-2 is driven to rotate through the outer wall of the cylindrical battery shell 4, and the cylindrical battery shell 4 is clamped; then, the lifting platform 2-3 drives the cylindrical battery shell 4 to move towards the vertical projection direction of the pressing mechanism 1 together, and the cylindrical battery shell stops when the cylindrical battery shell moves to the position below the pressing mechanism 1 and the coaxial position of the pressing mechanism 1 and the positioning mechanism 2,
in this embodiment, the third truss 5-3 is movably connected to the second truss 5-2 through a sliding block 7, the welding mechanism 3 reaches a designated working position through the sliding block 7, the cylindrical battery case 4 moves up and down under the action of the lifting platform 2-3 to reach the designated working position, the driving device 1-2 in the pressing mechanism 1 drives the chuck 1-1 to move downward, the negative current collecting disc is pressed and compacted in the cylindrical battery case 4, and after sufficient positioning, peripheral welding is performed, except that the motor 1-3 is used for driving the pressing mechanism 1 to rotate, in this embodiment, the driving wheel 2-1 can also rotate to drive the cylindrical battery case 4 to rotate, the welding mechanism 3 starts to work, the welding nozzle 3-1 and the nitrogen nozzle 3-2 work simultaneously to control welding strength, and stable peripheral welding is performed on the negative current collecting disc and the cylindrical battery case 4. After the process is completed, the welding mechanism 3 and the pressing mechanism 1 are reset, and the welded cylindrical battery is taken out so as to carry out the next process.
Example 2
The welding device for a cylindrical battery anode current collecting plate of the present embodiment is basically the same as embodiment 1, except that the chuck 1-1 of the pressing mechanism 1 is not a three-jaw chuck, and the structure thereof is as shown in fig. 4.
The upper sliding blocks 1-5 are movably connected to the lower sliding blocks 1-6, the upper sliding blocks 1-5 and the lower sliding blocks 1-6 are multiple and similar to the structure of a multi-jaw chuck, and the difference is that the multiple upper sliding blocks 1-5 are connected through springs 1-4, when the driving device 1-2 does not drive the upper sliding blocks 1-5 to move downwards, the springs 1-4 contract, the multiple upper sliding blocks 1-5 contract towards the same circle center, and the lower sliding blocks 1-6 are driven to contract towards the same circle center. When the chuck 1-1 contacts a cylindrical battery shell 4 to be processed, the driving device 1-2 drives the upper sliding blocks 1-5 to move downwards, the spring is stretched, the upper sliding blocks 1-5 are far away from the same circle center, the lower sliding blocks 1-6 are driven to be far away from the same circle center and contact the negative pole current collecting disc, and therefore the negative pole current collecting disc is pressed tightly in the cylindrical battery shell 4. The chuck 1-1 of this embodiment can be provided in plurality as required, has a simple structure, and can make full circumferential contact with the anode current collecting disk in the cylindrical battery case 4.
Claims (10)
1. The utility model provides a welding set that is used for cylinder battery negative pole current collector, its characterized in that: the device comprises a pressing mechanism (1) for aligning and pressing the circumferential edges of a negative current collecting disc and a cylindrical battery shell (4), a positioning mechanism (2) for coaxially positioning the cylindrical battery shell (4) on the pressing mechanism (1), and a welding mechanism (3) for welding the circumferential edges of the negative current collecting disc and the cylindrical battery shell (4); the pressing mechanism (1), the positioning mechanism (2) and the welding mechanism (3) are respectively connected to the truss;
the pressing mechanism (1) comprises a chuck (1-1), the chuck (1-1) is driven by a driving device (1-2), and the anode current collecting disc and the circumference of the cylindrical battery shell (4) can be aligned and pressed.
2. The welding device for a cylindrical battery anode current collecting plate according to claim 1, wherein: the positioning mechanism (2) comprises a lifting platform (2-3), a driving wheel (2-1) fixedly connected to the lifting platform (2-3) and a driven wheel (2-2) movably connected to the lifting platform (2-3), and the driven wheel (2-2) can be far away from or close to the driving wheel (2-1); the positioning mechanism (2) can be far away from or close to the vertical projection position of the pressing mechanism (1).
3. The welding apparatus for a cylindrical battery anode current collecting plate according to claim 2, wherein: the chuck (1-1) is a multi-jaw chuck; the multi-jaw chuck is connected to a driving device (1-2), and the driving device (1-2) is connected to the truss.
4. The welding device for a cylindrical battery anode current collecting plate according to claim 2, wherein: the number of the driving wheels (2-1) and the number of the driven wheels (2-2) are at least two respectively, and the driving wheels and the driven wheels are used for clamping the cylindrical battery shell (4).
5. The welding device for a cylindrical battery anode current collecting plate according to claim 2, wherein: the welding mechanism (3) comprises a welding spray pipe (3-1) and a nitrogen spray pipe (3-2).
6. The welding device for a cylindrical battery anode current collecting plate according to claim 5, wherein: one ends of the welding spray pipe (3-1) and the nitrogen spray pipe (3-2) are inclined downwards, and an acute angle is formed between the inclined direction of the welding spray pipe (3-1) and the horizontal plane of the nitrogen spray pipe (3-2).
7. The welding apparatus for a cylindrical battery anode current collecting plate according to claim 6, wherein: the acute angle is 25-35 degrees.
8. A welding apparatus for an anode current collecting plate of a cylindrical battery according to any one of claims 1 to 7, wherein: the trusses comprise a first truss (5-1), a second truss (5-2) and a third truss (5-3); the first truss (5-1) is fixedly connected to the second truss (5-2), and the third truss (5-3) is movably connected to the second truss (5-2); the welding mechanism (3) is movably connected to the third truss (5-3), and the pressing mechanism (1) is movably connected to the second truss (5-2).
9. The welding device for a cylindrical battery anode current collecting plate according to claim 8, wherein: the pressing mechanism (1) is connected to the second truss (5-2) through a motor (1-3), and the motor (1-3) is used for driving the pressing mechanism (1) to rotate.
10. The welding apparatus for a cylindrical battery anode current collecting plate according to claim 9, wherein: also comprises a base (6); the first truss (5-1) and the positioning mechanism (2) are fixedly connected to the base (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222519851.XU CN218311814U (en) | 2022-09-22 | 2022-09-22 | Welding device for cylindrical battery cathode current collecting disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222519851.XU CN218311814U (en) | 2022-09-22 | 2022-09-22 | Welding device for cylindrical battery cathode current collecting disc |
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| Publication Number | Publication Date |
|---|---|
| CN218311814U true CN218311814U (en) | 2023-01-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222519851.XU Active CN218311814U (en) | 2022-09-22 | 2022-09-22 | Welding device for cylindrical battery cathode current collecting disc |
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| Country | Link |
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| CN (1) | CN218311814U (en) |
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- 2022-09-22 CN CN202222519851.XU patent/CN218311814U/en active Active
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