CN219324868U - Nickel-hydrogen power battery positive electrode ultrasonic continuous roll welding joint - Google Patents
Nickel-hydrogen power battery positive electrode ultrasonic continuous roll welding joint Download PDFInfo
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- CN219324868U CN219324868U CN202320160191.2U CN202320160191U CN219324868U CN 219324868 U CN219324868 U CN 219324868U CN 202320160191 U CN202320160191 U CN 202320160191U CN 219324868 U CN219324868 U CN 219324868U
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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Abstract
The utility model belongs to the technical field of ultrasonic welding, and particularly discloses an ultrasonic continuous roll welding head for a positive electrode of a nickel-hydrogen power battery, which comprises a welding working disc and two compound amplitude transformers, wherein the welding working disc is positioned between the two compound amplitude transformers, the two compound amplitude transformers are formed by respectively extending outwards two end faces of the welding working disc, a plane is arranged in the center of each end face of the welding working disc, the two compound amplitude transformers are respectively and vertically arranged on the two planes, the edges of the two end faces of the welding working disc are respectively and inwards inclined to form annular inclined planes, and the included angle of the two inclined planes is 4-6 degrees. According to the utility model, the composite amplitude transformers are respectively arranged on the two planes of the welding working disc, and meanwhile, the edges of the two end faces of the welding working disc are inwards inclined to form two inclined planes, so that the ultrasonic welding head has a reliable structure and good welding stability, meanwhile, welding defect defects such as false welding and explosion welding can not be generated, and the welding qualification rate is improved.
Description
Technical Field
The utility model belongs to the technical field of ultrasonic welding, and particularly relates to an ultrasonic continuous rolling welding head for a positive electrode of a nickel-hydrogen power battery.
Background
At present, in the manufacturing process of the positive plate of the nickel-hydrogen power battery, a nickel-plated steel belt is required to be used as a current collector to be welded on foam nickel which is not coated with slurry on each row of the positive plates, and the current passing capacity is increased, so that the positive plate of the battery is formed.
In the production of the positive electrode of the nickel-hydrogen power battery taking foam nickel as a base material, a metal ultrasonic continuous welding mode is generally adopted to weld a current collector and a polar plate. The ultrasonic welding head is generally positioned above the polar plate and the current collector, the polar plate and the current collector pass through the space between the ultrasonic welding head and the welding bottom die at a constant speed in the continuous welding process, meanwhile, the welding bottom die applies pressure to the polar plate and the current collector to cling to the working surface of the welding head, the working surface at the outer edge of the ultrasonic welding head presses the surface of the current collector and rotates at the same linear speed, and under the high-frequency vibration and friction action of the ultrasonic welding head, the current collector and the foam nickel are tightly and continuously welded into a whole.
The ultrasonic welding process needs to convert the oscillating current of ultrasonic frequency into elastic mechanical energy, and then the amplitude is amplified by the amplitude transformer and transmitted to the workpiece by the amplitude transformer, so the self-vibration frequency of each component of the ultrasonic welding head (comprising the amplitude transformer and the welding working disc) needs to be designed according to the same frequency. One end of the existing ultrasonic welding head is used for connecting a motor and a transducer, the other end of the existing ultrasonic welding head is used for welding, the welding head is easy to shake and deviate under the conditions that a welding working disc rotates at a high speed and the pressure is large, frequency matching performance of the welding head and an ultrasonic generator is biased, even the frequency and the amplitude of the welding head are reduced, the welding stability is greatly affected, and particularly poor welding defects such as cold welding, explosion welding and the like can be caused when a current collector is welded under the conditions that a polar plate moves in a serpentine wave mode, power fluctuation and current collector conveying is blocked, and the electrical property of a battery is seriously affected.
Accordingly, the inventors have devised a welding head to solve the above-described problems.
Disclosure of Invention
The utility model aims at: the ultrasonic continuous rolling welding joint for the positive electrode of the nickel-hydrogen power battery is reliable in structure, good in welding stability and capable of improving welding qualification rate.
In order to achieve the above purpose, the utility model adopts a technical scheme that:
the utility model provides a nickel-hydrogen power battery positive pole ultrasonic wave continuous roll welding head, includes welding work dish and two compound amplitude transformer, the welding work dish is located two between the compound amplitude transformer, two compound amplitude transformer by the both ends face of welding work dish outwards extends respectively and forms, every terminal surface center of welding work dish all is equipped with the plane, two compound amplitude transformer set up perpendicularly respectively in two on the plane, two terminal surface edges of welding work dish inwards slope respectively form annular inclined plane, two the contained angle of inclined plane is 4 ~ 6.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, the thickness between two planes is 7-8 mm, and the diameter of the planes is larger than that of the composite amplitude transformer.
As an improvement of the ultrasonic continuous roll welding joint of the positive electrode of the nickel-hydrogen power battery, the diameter of the working end of the composite amplitude transformer is smaller than that of the fixed end of the composite amplitude transformer, and the length of the fixed end of the composite amplitude transformer is 70-80 mm.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, a boss is arranged on the fixed end face of the composite amplitude transformer, the diameter of the boss is 31.5-32.5 mm, and a threaded hole is arranged on the end face of the boss.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, two composite amplitude transformers are symmetrically arranged and coaxial with the welding working disk, and the diameter of the welding working disk is 230-240 mm.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, the total length of the welding working disc and the two composite amplitude transformers is 275-285 mm.
As an improvement of the ultrasonic continuous roll welding joint of the positive electrode of the nickel-hydrogen power battery, the fixed end of the composite amplitude transformer is cylindrical, and the diameter of the fixed end of the composite amplitude transformer is 55-65 mm.
As an improvement of the ultrasonic continuous roll welding joint of the positive electrode of the nickel-hydrogen power battery, the outer wall of the fixed end of the composite amplitude transformer is provided with a plurality of fixing holes which are arranged at intervals.
In order to achieve the above purpose, another technical scheme adopted by the utility model is as follows:
the utility model provides a nickel-hydrogen power battery positive pole ultrasonic wave continuous roll welding head, includes welding work dish and two compound amplitude transformer, the welding work dish is located two between the compound amplitude transformer, two compound amplitude transformer by the both ends face of welding work dish outwards extends respectively and forms, every terminal surface center of welding work dish all is equipped with the plane, two compound amplitude transformer set up perpendicularly respectively in two on the plane, two terminal surface edges of welding work dish inwards slope respectively form annular inclined plane, two the contained angle of inclined plane is 4 ~ 6.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, the thickness between two planes is 7-8 mm, and the diameter of the planes is larger than that of the composite amplitude transformer.
As an improvement of the ultrasonic continuous roll welding joint of the positive electrode of the nickel-hydrogen power battery, the diameter of the working end of the composite amplitude transformer is smaller than that of the fixed end of the composite amplitude transformer, and the length of the fixed end of the composite amplitude transformer is 70-80 mm.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, a boss is arranged on the fixed end face of the composite amplitude transformer, the diameter of the boss is 31.5-32.5 mm, and a threaded hole is arranged on the end face of the boss.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, two composite amplitude transformers are symmetrically arranged and coaxial with the welding working disk, and the diameter of the welding working disk is 230-240 mm.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, the total length of the welding working disc and the two composite amplitude transformers is 275-285 mm.
As an improvement of the ultrasonic continuous roll welding joint of the positive electrode of the nickel-hydrogen power battery, the side wall of the fixed end of the composite amplitude transformer is polygonal, and the width of the fixed end of the composite amplitude transformer is 55-65 mm.
As an improvement of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery, a plurality of through holes are arranged on the welding working disc in a penetrating way, and the through holes are positioned on the inclined plane and are arranged at intervals in a circle.
Compared with the prior art, the ultrasonic continuous rolling welding head of the nickel-hydrogen power battery has the advantages that the composite amplitude transformer is respectively arranged on the two planes of the welding working disc, and meanwhile, the edges of the two end faces of the welding working disc are inwards inclined to form two inclined planes with the included angle of 4-6 degrees, so that the vibration frequency of the whole welding head reaches 20KHz, the ultrasonic amplitude amplification and the effective energy transmission are met, the high-frequency vibration requirement of an ultrasonic welding head is met, the optimal structural parameters are achieved, the ultrasonic welding head is reliable in structure and good in welding stability, and welding defects such as false welding and explosion welding can not be generated even under the conditions of snakelike fluctuation, power fluctuation, current collector conveying and the like of polar plate running, and the welding qualification rate is improved.
Description of the drawings:
FIG. 1 is a perspective view of an ultrasonic continuous roll welding head for a positive electrode of a nickel-hydrogen power battery according to a first embodiment of the utility model;
FIG. 2 is a front view of an ultrasonic continuous roll-welding head for the positive electrode of a nickel-metal hydride power battery in accordance with a first embodiment of the present utility model;
FIG. 3 is a perspective view of an ultrasonic continuous roll-welding joint for the positive electrode of a nickel-hydrogen power battery according to a second embodiment of the utility model;
FIG. 4 is a left side view of an ultrasonic continuous roll-welding joint for the positive electrode of a nickel-hydrogen power cell according to a second embodiment of the utility model;
fig. 5 is a front view of an ultrasonic continuous roll-welding joint for the positive electrode of a nickel-hydrogen power cell according to a second embodiment of the utility model.
Illustration of:
1. welding a working disc; 11. a plane; 12. an inclined plane; 121. a through hole; 2. a composite horn; 21. a boss; 211. a threaded hole; 22. and a fixing hole.
Detailed Description
Embodiments of the present utility model will now be described in detail with reference to the drawings, which are intended to be used as references and illustrations only, and are not intended to limit the scope of the utility model.
Example 1
Referring to fig. 1 and 2, an ultrasonic continuous roll welding joint for a positive electrode of a nickel-hydrogen power battery comprises a welding working disc 1 and two composite amplitude transformers 2, wherein the welding working disc 1 is positioned between the two composite amplitude transformers 2, the two composite amplitude transformers 2 are formed by respectively extending outwards from two end surfaces of the welding working disc 1, and the welding working disc 1 and the two composite amplitude transformers 2 are integrally processed by metal materials.
Referring to fig. 1 and 2, the welding working disc 1 is disc-shaped, the overall diameter of the welding working disc 1 is 230 mm-240 mm, the side wall of the welding working disc 1 is a welding working surface thereof, the center of each end face of the welding working disc 1 is provided with a plane 11, the thickness G between the two planes 11 is 7 mm-8 mm, the diameter of each plane 11 is larger than the diameter of the composite amplitude transformer 2, the edges of the two end faces of the welding working disc 1 are respectively inclined inwards to form inclined planes 12, the two inclined planes 12 are annular, the included angle F of the two inclined planes 12 is 4-6 degrees, and the whole welding working disc 1 is transited from the root part to the thin inclined plane from the thickness outwards, so that the welding working surface of the welding working disc 1 is the smallest size.
Referring to fig. 1 and 2, two composite amplitude transformers 2 are symmetrically arranged, the two composite amplitude transformers 2 are respectively and vertically arranged on two planes 11, one end of each composite amplitude transformer 2 close to a welding working disc 1 is a working end, the diameter of the working end of each composite amplitude transformer 2 is smaller than that of the fixed end of each composite amplitude transformer 2, the appearance of each composite amplitude transformer 2 is in a stepped shape, one end of each composite amplitude transformer 2 far away from the welding working disc 1 is a fixed end, the fixed end of each composite amplitude transformer 2 is in a cylindrical shape, the diameter of the fixed end of each composite amplitude transformer 2 is 55 mm-65 mm, the fixed end length C of each composite amplitude transformer 2 is 70 mm-80 mm, a plurality of fixing holes 22 are formed in the outer wall of the fixed end of each composite amplitude transformer 2, the plurality of fixing holes 22 are arranged at intervals, a boss 21 is arranged on the fixed end face of each composite amplitude transformer 2, the diameter of each boss 21 is 31.5 mm-32.5 mm, a threaded hole 211 is formed in the end face of each boss 21, and the threaded hole is used for being connected with a welding machine.
Referring to fig. 1 and 2, in this embodiment, two composite horns 2 are both coaxially arranged with a welding disc 1, the whole welding head is in a cross shape, the whole welding head is integrally manufactured and is bilaterally symmetrical, and the total length of the welding disc 1 and the two composite horns 2 is 275 mm-285 mm.
Example two
Referring to fig. 3 to 5, which are second embodiment of the present utility model, this embodiment is different from the first embodiment in that: the side wall of the fixed end of the composite amplitude transformer 2 in this embodiment is polygonal, the width of the fixed end of the composite amplitude transformer 2 is 55 mm-65 mm, a plurality of through holes 121 are arranged on the welding working disc 1 in a penetrating manner, the plurality of through holes 121 are located on the two inclined planes 12 and are arranged at intervals around the plane 11, and other structures are identical to those of the first embodiment and are not described herein.
The application method of the ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery comprises the following steps: one of the composite amplitude transformers 2 is connected with a transducer, high-frequency elastic mechanical energy converted by the transducer is received by oscillating current emitted by an ultrasonic generator, the other composite amplitude transformer 2 is connected with a driving motor, the working face at the outer edge of a welding head and a polar plate move at the same linear speed at the same speed through motor driving, when in welding work, a welding head is positioned above a current collector, the current collector is tightly attached to foam nickel by the welding head and a welding bottom die, the polar plate drives the current collector to pass between the welding head and the welding bottom die at the same speed, and the working face at the outer edge of the welding head and the polar plate keep the same linear speed, so that automatic continuous welding is carried out.
The positive electrode ultrasonic continuous roll welding joint of the nickel-hydrogen power battery has the following beneficial technical effects:
(1) The welding head can obtain different application effects by changing the shape, the structure, the size and the surface state of each component of the ultrasonic welding head, and the ultrasonic welding head can adopt special processes and materials, such as heat treatment, surface spraying of tungsten carbide, oxide and the like, so that special process requirements are met, the surface wear resistance is improved, and the loss is reduced;
(2) The ultrasonic wave welding needs to convert the oscillating current with ultrasonic frequency into elastic mechanical energy, and then the amplitude is amplified by the amplitude transformer to be transmitted to the workpiece. Therefore, the self-vibration frequency of each component of the ultrasonic welding head (comprising an amplitude transformer and a welding working disc) needs to be designed according to the same frequency, each component of the ultrasonic welding head changes along with the material, the shape structure, the size and the surface state, the natural frequency of the ultrasonic welding head also changes correspondingly, the frequency matching performance of the ultrasonic welding head and an ultrasonic generator is caused to deviate, even the frequency and the amplitude of the ultrasonic welding head are reduced, and the welding stability is greatly influenced, so that the size and the structure of each part of the ultrasonic continuous rolling welding head of the positive electrode of the nickel-hydrogen power battery are mutually matched, the vibration frequency of the welding head is 20KHz, the ultrasonic amplitude amplification is met, the high-frequency vibration requirement of the ultrasonic welding head is met, the optimal structural parameter is achieved, the ultrasonic welding head structure is reliable, the welding stability is good, the welding defects such as false welding and the welding are not generated even under the conditions of snake-shaped fluctuation, power fluctuation, current collector conveying blocking and the like of the polar plate running, and the welding qualification rate is improved;
(3) The welding head of the utility model has enough strength and wear resistance, not only can the service life of the welding head be prolonged, but also the stability of the strength of the welding point can be ensured;
(4) The two ends of the welding head are respectively connected with the energy converter and the driving motor, so that the rolling welding of the welding head is more stable, no offset exists, and welding defects such as cold joint and explosion welding can not be generated even under the conditions of serpentine fluctuation, power fluctuation, current collector conveying clamping and the like of polar plate running, and the welding qualification rate is improved.
The above disclosure is illustrative of the preferred embodiments of the present utility model and should not be construed as limiting the scope of the utility model, which is defined by the appended claims.
Claims (10)
1. The utility model provides a nickel-hydrogen power battery positive pole ultrasonic wave continuous roll welding head, includes welding work dish and two compound amplitude transformer, its characterized in that, the welding work dish is located two between the compound amplitude transformer, two compound amplitude transformer is by the both ends face of welding work dish outwards extends respectively and forms, every terminal surface center of welding work dish all is equipped with the plane, two compound amplitude transformer sets up perpendicularly respectively on two on the plane, two terminal surface edges of welding work dish inwards slope respectively form annular inclined plane, two the contained angle of inclined plane is 4 ~ 6.
2. The ultrasonic continuous roll welding head of the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein the thickness between two planes is 7 mm-8 mm, and the diameter of the planes is larger than the diameter of the composite amplitude transformer.
3. The ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein the diameter of the working end of the composite amplitude transformer is smaller than the diameter of the fixed end of the composite amplitude transformer, and the length of the fixed end of the composite amplitude transformer is 70-80 mm.
4. The ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein a boss is arranged on the fixed end face of the composite amplitude transformer, the diameter of the boss is 31.5-32.5 mm, and a threaded hole is arranged on the end face of the boss.
5. The ultrasonic continuous roll welding head for the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein the two composite amplitude transformers are symmetrically arranged and coaxial with the welding working disk, and the diameter of the welding working disk is 230-240 mm.
6. The ultrasonic continuous roll welding head for the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein the total length of the welding working disc and the two composite amplitude transformers is 275-285 mm.
7. The ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein the fixed end of the composite amplitude transformer is cylindrical, and the diameter of the fixed end of the composite amplitude transformer is 55-65 mm.
8. The ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein a plurality of fixing holes are formed in the outer wall of the fixed end of the composite amplitude transformer, and the fixing holes are arranged at intervals.
9. The ultrasonic continuous roll welding joint for the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein the side wall of the fixed end of the composite amplitude transformer is polygonal, and the width of the fixed end of the composite amplitude transformer is 55-65 mm.
10. The ultrasonic continuous roll welding head of the positive electrode of the nickel-hydrogen power battery according to claim 1, wherein a plurality of through holes are formed in the welding working disc in a penetrating mode, and the through holes are located on the inclined plane and are arranged at intervals.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320160191.2U CN219324868U (en) | 2023-02-08 | 2023-02-08 | Nickel-hydrogen power battery positive electrode ultrasonic continuous roll welding joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320160191.2U CN219324868U (en) | 2023-02-08 | 2023-02-08 | Nickel-hydrogen power battery positive electrode ultrasonic continuous roll welding joint |
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| Publication Number | Publication Date |
|---|---|
| CN219324868U true CN219324868U (en) | 2023-07-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320160191.2U Active CN219324868U (en) | 2023-02-08 | 2023-02-08 | Nickel-hydrogen power battery positive electrode ultrasonic continuous roll welding joint |
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| CN (1) | CN219324868U (en) |
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- 2023-02-08 CN CN202320160191.2U patent/CN219324868U/en active Active
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