Ultrasonic welding equipment
By using gravity and dust removal wind in ultrasonic welding equipment, metal chips are discharged downward, which solves the problem of metal foreign matter splashing into the battery cell during welding, and significantly reduces the loss rate of the battery cell.
Patent Information
- Application Number
- CN202421531491.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-01
- Publication Date
- 2025-06-13
- Estimated Expiration
- 2034-07-01
AI Technical Summary
During the manufacturing process of power batteries, metal foreign matter generated during ultrasonic welding is prone to splash into the inside of the battery cell, resulting in short-circuiting of the electrode core and scrapping of the battery cell, increasing the loss rate.
Design an ultrasonic welding equipment to use gravity and dust removal wind to allow metal chips to be discharged downward first and away from the extreme core, thereby reducing the risk of foreign matter entering the battery cell.
It effectively reduces the risk of foreign matter entering the surface and interior of the electrode core during welding, and improves the production reliability and control of the loss rate of the battery cell.
Smart Images
Figure CN222971212U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of welding, in particular to an ultrasonic welding device. Background Art
[0002] During the manufacturing process of power batteries, the positive and negative current collectors are usually welded by ultrasonic welding. During the welding process, due to the thin current collector, burrs at the edge, and the rubbing effect during welding, a large amount of metal foreign matter will splash during ultrasonic welding. These metal foreign matters are very likely to enter the inside of the power battery cell during production, causing problems such as short circuits in the electrode core and resulting in the scrapping of the cell, greatly increasing the material loss rate of cell production.
[0003] In related technologies, current ultrasonic welding machines and equipment often use flat welding. During welding, metal splashes fly upward, and the flight trajectory is close to an upward parabola, and the probability of metal foreign matter entering the inside of the cell is extremely high. Summary of the Utility Model
[0004] The utility model aims to at least solve one of the technical problems existing in the prior art. For this reason, the utility model provides an ultrasonic welding device. Under the action of gravity and dust removal wind force, ultrasonic welding metal chips will preferentially discharge downward away from the electrode core, which will greatly reduce the risk of foreign matter being introduced into the electrode core.
[0005] The ultrasonic welding device according to an embodiment of the utility model includes: a welding head; a pressing member, which is movably arranged above the welding head up and down and is used to apply pressure to a welding workpiece placed on the welding head; a dust collector, which has a dust removal port, and the dust removal port is arranged below the welding head.
[0006] The ultrasonic welding device according to an embodiment of the utility model, under the action of gravity and dust removal wind force, ultrasonic welding metal chips will preferentially discharge downward away from the electrode core, which will greatly reduce the risk of foreign matter being introduced into the electrode core.
[0007] According to some embodiments of the utility model, it further includes: an ultrasonic transducer, which is connected to the welding head, and the vibration direction of the ultrasonic transducer is in the up and down direction.
[0008] According to some embodiments of the utility model, it further includes: an amplitude modulator, which is arranged on the ultrasonic transducer and is used to adjust the amplitude of the ultrasonic transducer.
[0009] According to some embodiments of the utility model, it further includes: a cooling component, which is arranged on the periphery of the welding head and is used to dissipate heat from the welding head.
[0010] According to some embodiments of the present utility model, the cooling assembly includes: a cooling water pipe, which is arranged around the welding head, and the cooling water pipe is connected with a water inlet and a water outlet.
[0011] According to some embodiments of the present utility model, the cooling assembly further includes: a heat conducting member, which is arranged between the periphery of the welding head and the cooling water pipe.
[0012] According to some embodiments of the present utility model, the welding head includes: a welding head body and a welding portion, the pressing member is arranged above the welding portion and the dust removal port is arranged below the welding portion.
[0013] According to some embodiments of the present utility model, it further includes: a chassis, the welding body is arranged inside the chassis and the welding portion is arranged outside the chassis; a driving member, the driving member is arranged inside the chassis, the pressing member is arranged outside the chassis, and the driving member is drivingly connected with the pressing member.
[0014] According to some embodiments of the present utility model, it further includes: a connecting bracket, the driving member provides a driving force in the up and down direction, the connecting bracket is horizontally arranged on the chassis, one end of the connecting bracket is connected with the driving member and the other end is connected with the pressing member.
[0015] According to some embodiments of the present utility model, the welding center of the welding head, the center of the pressing member and the center of the dust removal port are on the same center line in the up and down direction.
[0016] The additional aspects and advantages of the present utility model will be partly given in the following description, partly will become obvious from the following description, or be understood through the practice of the present utility model. Description of the Drawings
[0017] The above and / or additional aspects and advantages of the present utility model will become obvious and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:
[0018] Figure 1 is a schematic structural diagram of an ultrasonic welding device according to an embodiment of the present utility model;
[0019] Figure 2 is a partial structural diagram of an ultrasonic welding device according to an embodiment of the present utility model;
[0020] Figure 3 is a partial structural diagram of an ultrasonic welding device according to an embodiment of the present utility model.
[0021] Reference Signs:
[0022] 1. Connector; 2. Driving part; 3. Modulator; 4. Ultrasonic transducer; 5. Chassis; 6. Connection bracket; 7. Pressing part; 8. Welding workpiece; 9. Welding head; 10. Heat-conducting part; 11. Cooling water pipe; 12. Dust removal port. Detailed implementation manner
[0023] The embodiments of the present utility model will be described in detail below. The embodiments described with reference to the accompanying drawings are exemplary. The embodiments of the present utility model will be described in detail below.
[0024] Reference will be made below Figures 1 - 3 to describe an ultrasonic welding device according to an embodiment of the present utility model.
[0025] As Figures 1 - 3 shown, the ultrasonic welding device includes: a welding head 9, a pressing part 7 and a dust collector. The pressing part 7 is movably arranged above the welding head 9 up and down, and is used to apply pressure to the welding workpiece 8 placed on the welding head 9. The dust collector has a dust removal port 12, and the dust removal port 12 is arranged below the welding head 9.
[0026] Taking the pole core as an example of the welding workpiece 8, during welding, the pole tab of the pole core is placed on the surface of the welding head 9, and the pressing part 7 moves downward towards the pole core to press the pole core between the welding head 9 and the pressing part 7. At this time, the contact surface between the pole tab of the pole core and the welding head 9 faces downward. The movement trajectory of the metal foreign matters generated during welding is approximately a downward parabola, so that the metal foreign matters stay near the battery cell for a short time, reducing the probability of foreign matters such as metal entering the pole core, and can effectively keep away from the pole core.
[0027] Moreover, the dust removal port 12 is arranged below the welding head 9, and the air flow brought by the dust removal negative pressure gives the metal foreign matters generated during welding a downward acceleration, further reducing the staying time of the foreign matters near the battery cell. In addition, the dust removal port 12 is used not only to suck away the metal foreign matters generated during welding, but also to assist in cooling the welding head 9.
[0028] In the embodiment of the present utility model, the pressing part 7 and / or the welding head 9 can be made of high-speed steel.
[0029] Thus, in the ultrasonic welding device according to the present utility model, under the action of its own gravity and the dust removal wind force, the metal foreign matters will preferentially be discharged downward in the direction away from the pole core, greatly reducing the risk of foreign matters entering the surface and inside of the pole core during the welding process.
[0030] Furthermore, the ultrasonic welding device further includes: an ultrasonic transducer 4. The ultrasonic transducer 4 is connected to the welding head 9, and the vibration direction of the ultrasonic transducer 4 is the up-and-down direction.
[0031] In this way, the ultrasonic transducer 4 converts electrical energy into mechanical energy, provides ultrasonic vibration for the welding head 9, and the vibration direction of the welding head 9 is up and down. During the welding process, the ultrasonic transducer 4 pressurizes the welding head 9 and the clamping member 7 to rub at high frequency. The welding head 9 is the vibration source, and the contact surface between the pole core and the pole ear and the welding head 9 faces downward. During welding, spatters are fan-shaped and fly away from the pole core.
[0032] Furthermore, it also includes: an amplitude modulator 3, which is arranged on the ultrasonic transducer 4 and is used to adjust the amplitude of the ultrasonic transducer 4. In this way, the welding requirements for pole cores of different specifications are achieved by adjusting the amplitude of the ultrasonic transducer 4.
[0033] Therefore, the ultrasonic welding equipment of the present invention places the amplitude modulator 3, ultrasonic transducer 4 and welding head 9 downward, and adopts an overhead welding position. Under the action of gravity and dust removal wind force, metal chips will be preferentially discharged downward away from the pole core, which will greatly reduce the risk of foreign matter being introduced into the pole core.
[0034] Furthermore, it also includes: a cooling component, which is arranged at the periphery of the welding head 9 and is used to dissipate heat from the welding head 9. Since the temperature of the welding head 9 and its surroundings is high during the welding process, a cooling component is arranged at the periphery of the welding head 9 to cool the welding head 9.
[0035] Compared with the traditional ultrasonic welding machine, the welding head is in a moving state during welding, and the welding head can only be cooled by opening cooling holes inside, which affects the welding effect. According to the ultrasonic welding equipment of the utility model, the external cooling component can continuously cool the welding head 9, which can increase the service life of the welding head 9 and reduce the welding damage rate.
[0036] Furthermore, the cooling assembly includes: a cooling water pipe 11, which is arranged at the periphery of the welding head 9, and the cooling water pipe 11 is connected with a water inlet and a water outlet.
[0037] In one embodiment of the utility model, a cooling water pipe 11 is arranged on the periphery of the welding head 9. During the welding process, a steady stream of liquid enters the cooling water pipe 11 through the water inlet, exchanges heat with the welding head 9, and flows out from the water outlet, thereby cooling the welding head 9.
[0038] Furthermore, the cooling assembly further includes: a heat conductor 10, which is arranged between the periphery of the welding head 9 and the cooling water pipe 11. In this way, the heat conductor 10 is arranged on the periphery of the welding head 9, and the cooling water pipe 11 is arranged on the side of the heat conductor 10 away from the welding head 9. During the welding process, the heat of the welding head 9 is transferred to the cooling water pipe 11 through the heat conductor 10, and then the cooling water pipe 11 cools the heat conductor 10 to achieve cooling of the welding head 9, effectively improving the cooling effect of the welding head 9.
[0039] Exemplarily, the heat conducting member 10 may be heat conducting silica gel, but is not limited thereto.
[0040] Further, the cooling assembly includes a cooling cover body sleeved on the welding head 9. An air inlet nozzle is arranged on the cooling cover body. The air inlet nozzle is connected with a blowing module. A plurality of air outlet holes are formed in the surface of the cooling cover body facing the welding head 9.
[0041] In another embodiment of the present utility model, a cooling cover body is sleeved around the welding head 9. During the welding process, the blowing module is turned on so that air flow enters the cooling cover body through the air inlet nozzle, and then the air flow blows towards the surface of the welding head 9 through the plurality of air outlet holes, thereby achieving the cooling of the welding head 9.
[0042] Further, the welding head 9 includes a welding head body and a welding portion. The pressing member 7 is arranged above the welding portion, and the dust removal port 12 is arranged below the welding portion.
[0043] Further, the ultrasonic welding device further includes a chassis 5. The welding body is arranged inside the chassis 5, and the welding portion is arranged outside the chassis 5. Among them, the ultrasonic transducer 4 and the amplitude modulator 3 are arranged inside the chassis 5 and are connected to the welding body. In this way, the chassis 5 can protect the internal structure of the ultrasonic welding device, including the amplitude modulator 3 and the ultrasonic transducer 4, etc.
[0044] Further, the ultrasonic welding device further includes a driving member 2. The driving member 2 is arranged inside the chassis 5, and the pressing member 7 is arranged outside the chassis 5. The driving member 2 is drivingly connected to the pressing member 7.
[0045] In the embodiment of the present utility model, the driving member 2 may be a driving cylinder.
[0046] Further, the driving member 2 provides a driving force in the up and down direction, and the ultrasonic welding device further includes a connecting bracket 6. The connecting bracket 6 is horizontally arranged on the chassis 5. One end of the connecting bracket 6 is used to fix the pressing member 7, and the other end is used to be drivingly connected to the driving member 2. In this way, when preparing for welding, the driving member 2 drives the pressing member 7 to move downward through the connecting bracket 6 to press the welding workpiece 8, and after the welding is completed, the driving member 2 drives the pressing member 7 to move upward away from the welding workpiece 8 so as to take out the welding workpiece 8.
[0047] Further, the ultrasonic welding device further includes a connector 1. The connector 1 is connected to the power output end of the driving member 2 and one end of the connecting bracket 6, and the connector 1 is perpendicularly arranged to the connecting bracket 6. In this way, the driving member 2 provides a driving force in the up and down direction. The connector 1 is connected to the power output end of the driving member 2, and one end of the connecting bracket 6 fixes the pressing member 7, and the other end is fixedly connected to the connector 1, so that the driving force provided by the driving member 2 is consistent with the moving direction of the pressing member 7.
[0048] Furthermore, the welding center of the welding head 9, the center of the pressing member 7, and the center of the dust removal port 12 are on the same center line in the vertical direction.
[0049] In this way, the pressing member 7 is arranged above the welding head 9, and the welding center of the welding head 9 and the center of the pressing member 7 are on the same center line in the vertical direction, which can ensure that a uniform pressing force is provided to the welding workpiece 8 and ensure that the welding workpiece 8 will not be misaligned during welding. Moreover, the dust removal port 12 is arranged below the welding head 9, and the welding center of the welding head 9 and the center of the dust removal port 12 are on the same center line in the vertical direction. When negative pressure dust removal is carried out, the air flow velocity is relatively uniform near the welding point, and metal foreign matters can be adsorbed evenly.
[0050] According to the ultrasonic welding equipment of the embodiment of the present invention, welding is carried out in the overhead welding position. The welding process is that high-frequency rubbing is carried out under pressure between the welding head 9 and the pressing member 7. The welding head 9 is the vibration source, the welding head 9 is below, and the contact surface between the pole core tab and the welding head 9 faces downward. During welding, the spatter splashes out in a fan shape and is far away from the pole core. Under the action of gravity and the dust removal wind force below, the ultrasonic welding metal chips will preferentially discharge downward in the direction away from the pole core, greatly reducing the risk of foreign matters entering the surface and interior of the pole core during the welding process. At the same time, the welding head 9 is fixed, and the external cooling component can achieve continuous cooling, which can improve the service life of the welding head 9 and reduce the rate of welding adhesion and breakage.
[0051] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.
[0052] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example.
[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and purposes of the present invention. The scope of the present invention is defined by the claims and their equivalents.
Claims
1. An ultrasonic welding device, characterized in that: include: Welding head; A pressing member, which is movably disposed above the welding head and is used to apply pressure to a welding workpiece placed on the welding head; A dust collector is provided with a dust removal port, and the dust removal port is arranged below the welding head.
2. The ultrasonic welding device according to claim 1, characterized in that: Also includes: An ultrasonic transducer is connected to the welding head, and the vibration direction of the ultrasonic transducer is up and down.
3. The ultrasonic welding device according to claim 2, characterized in that: Also includes: An amplitude modulator is arranged on the ultrasonic transducer and is used to adjust the amplitude of the ultrasonic transducer.
4. The ultrasonic welding equipment according to claim 1, characterized in that: Also includes: A cooling component is arranged at the periphery of the welding head and is used to dissipate heat from the welding head.
5. The ultrasonic welding device according to claim 4, characterized in that: The cooling assembly comprises: a cooling water pipe, the cooling water pipe is arranged at the periphery of the welding head, and the cooling water pipe is connected with a water inlet and a water outlet.
6. The ultrasonic welding device according to claim 5, characterized in that: The cooling assembly further includes a heat conducting member, which is arranged between the periphery of the welding head and the cooling water pipe.
7. The ultrasonic welding device according to claim 1, characterized in that: The welding head comprises: a welding head body and a welding part, the pressing member is arranged above the welding part and the dust removal port is arranged below the welding part.
8. The ultrasonic welding device according to claim 7, characterized in that: Also includes: A chassis, wherein the welding head body is arranged inside the chassis and the welding part is arranged outside the chassis; A driving member is arranged in the chassis, and the pressing member is arranged outside the chassis, and the driving member is drivingly connected to the pressing member.
9. The ultrasonic welding device according to claim 8, characterized in that: Also includes: The connecting bracket is provided with a driving member for providing a driving force in the up-down direction. The connecting bracket is transversely arranged on the chassis. One end of the connecting bracket is connected to the driving member and the other end is connected to the pressing member.
10. The ultrasonic welding device according to claim 1, characterized in that: The welding center of the welding head, the center of the pressing member and the center of the dust removal port are located on the same center line along the up and down directions.