Ultrasonic soldering station
By designing an ultrasonic welding station with a vacuum port and a vacuum groove, the problem of metal welding slag and active substance powder in the welding process during lithium-ion battery preparation is solved, and the welding quality is improved and the safety risk is reduced.
Patent Information
- Application Number
- CN202420500873.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-14
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-03-14
AI Technical Summary
During the preparation of lithium-ion batteries, the metal welding slag and active substance powder generated during ultrasonic welding cannot be processed in time, resulting in short circuit, desoldering defects and safety hazards.
An ultrasonic welding station is designed, including the main body of the welding station, the vacuum suction ports on both sides, the welding platform and the vacuum suction groove extending in the width direction, which is used to promptly deal with metal welding slag and active substance powder generated during the welding process.
It effectively avoids short-circuit problems caused by metal welding slag and desoldering defects caused by active substance powder, improves welding quality, ensures the cleanliness of the welding station, and reduces safety risks.
Smart Images
Figure CN222679776U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of lithium ion batteries, in particular to an ultrasonic welding station. Background Art
[0002] Lithium-ion batteries are mainly divided into wound type and laminated type in terms of structure. When preparing soft-pack laminated lithium-ion batteries, the positive electrode tabs and negative electrode tabs need to be welded together in the assembly process. Usually, ultrasonic welding is used to weld the tabs of multi-layered pole sheets together. The quality of the tab welding affects the quality of the battery cell.
[0003] Ultrasonic welding is the process of transmitting high-frequency vibration waves to the surfaces of two objects to be welded. Under pressure, the two surfaces of the objects rub against each other to form a fusion between the molecular layers. Specifically, ultrasonic metal welding is a special method of connecting the same or different metals using mechanical vibration energy at ultrasonic frequencies (over 16KHz). When ultrasonic welding metals, neither current is transmitted to the workpieces nor high-temperature heat is applied to the workpieces. Instead, under static pressure, the vibration energy is converted into friction work, deformation energy and limited temperature rise between the workpieces. The metallurgical bonding between the joints is a solid-state welding that is achieved without melting the parent material. Therefore, ultrasonic metal welding has the following advantages: (1) The welding material is partially melted and does not have fragile metal properties; (2) The conductivity after welding is good, and the resistivity is extremely low or close to zero; (3) The requirements for the surface of the welded metal are low, and both oxidation and electroplating can be welded; (4) The welding time is short, and no flux, gas, or solder is required; (5) The welding is spark-free and environmentally safe.
[0004] During the ultrasonic welding of the tabs and plates, the active materials on the plates may fall off due to the high-frequency vibration. The fallen active materials and the metal welding slag generated during the ultrasonic welding process will scatter and accumulate in the grooves between the welding seat and the welding table of the traditional ultrasonic welding.
[0005] Active material powder will cause the desoldering defect of the tab and the plate during the ultrasonic welding of the tab and the plate. In addition, the metal welding slag remaining in the ultrasonic welding process will cause various short circuit phenomena. For example, the metal welding slag remaining on the tab will directly connect the tab and the aluminum-plastic film to cause a short circuit, and the metal welding slag remaining on the battery cell will adhere to the diaphragm to cause a short circuit inside the battery, resulting in self-discharge, thereby reducing the battery's electrical performance and even causing safety problems such as fire. Utility Model Content
[0006] The utility model aims to provide an ultrasonic welding station to alleviate the technical problem that metal welding slag cannot be processed in time and there is a potential safety hazard in the existing welding process between the pole ear and the pole plate.
[0007] The utility model provides an ultrasonic welding station, comprising a welding station body, wherein a dust suction port is respectively arranged on both sides of the welding station body in a first direction; a welding platform is arranged between the two dust suction ports;
[0008] A plurality of dust suction grooves extending along the second direction are arranged on the welding platform, and a welding port is arranged at one end of the welding platform, and the welding port is used for assembling an ultrasonic welding head;
[0009] The first direction is the length direction of the soldering platform body, and the second direction is the width direction of the soldering platform body.
[0010] In an optional embodiment, a connecting channel is provided in the soldering station body, and the connecting channel connects the two dust suction ports.
[0011] In an optional embodiment, a dust suction installation port is provided on the soldering station body, and the dust suction installation port is connected to one of the dust suction ports.
[0012] In an optional embodiment, the dust suction groove is communicated with the connecting channel.
[0013] In an optional embodiment, the interval between two adjacent dust suction grooves is 10 mm.
[0014] In an optional embodiment, five dust suction grooves are provided on the welding platform.
[0015] In an optional embodiment, a lower support plate is provided at one end of the soldering station body, and the lower support plate is provided at one end of the soldering station body away from the soldering port;
[0016] At least one dust suction hole is arranged on the lower supporting plate.
[0017] In an optional embodiment, two dust suction holes are provided on the lower support plate.
[0018] In an optional embodiment, the two dust suction holes are spaced 40 mm apart.
[0019] In an optional embodiment, the upper end surface of the welding platform is lower than the upper end surface of the welding platform body.
[0020] The ultrasonic soldering station provided by the utility model has two dust suction ports on its main body, and the ultrasonic welding head is assembled at the welding port. During the welding process of the pole piece and the pole plate, the metal welding slag generated can be promptly processed by the dust suction groove and the dust suction port, so as to avoid various short circuit problems caused by the metal welding slag and avoid the desoldering defects of the pole ear and the pole plate caused by the metal powder. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0022] Figure 1 A schematic diagram of the structure of an ultrasonic welding station provided in an embodiment of the utility model;
[0023] Figure 2 for Figure 1 The AA cross-sectional structure diagram of the ultrasonic welding station shown;
[0024] Figure 3 for Figure 1 A schematic diagram of the structure of the ultrasonic welding station from another angle shown;
[0025] Figure 4 for Figure 1 A schematic structural diagram of the ultrasonic welding station shown in another angle.
[0026] Icons: 100-dust suction port; 200-welding platform; 300-dust suction groove; 400-lower support plate; 500-dust suction hole; 600-welding port; 700-connecting channel; 800-dust suction installation port. DETAILED DESCRIPTION
[0027] The terms “first”, “second”, “third”, etc. are only used for distinguishing descriptions and do not indicate the order of arrangement, nor can they be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.
[0029] In the description of the present application, it should be noted that the terms "inside", "outside", "left", "right", "up", "down", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are directions or positional relationships in which the products of the present application are usually placed when in use. They are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.
[0030] In the description of this application, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the internal connection of two elements.
[0031] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings.
[0032] Reference Figure 1-Figure 4 The utility model provides an ultrasonic welding station, including a welding station body, and a dust suction port 100 is respectively arranged on both sides of the welding station body in a first direction; a welding platform 200 is arranged between the two dust suction ports 100;
[0033] A plurality of dust collecting grooves 300 extending along the second direction are provided on the welding platform 200, and a welding port 600 is provided at one end of the welding platform 200, and the welding port 600 is used to assemble an ultrasonic welding head;
[0034] The first direction is the length direction of the soldering platform body, and the second direction is the width direction of the soldering platform body.
[0035] In some embodiments, an ultrasonic welding head is assembled at the welding port 600, and welding is performed between the pole ear and the pole piece at the ultrasonic welding head; metal welding slag is generated during the welding process, and the active material on the pole plate may fall off under the action of high-frequency vibration; if the metal welding slag and active material powder are not handled in time, short circuit and other problems may occur.
[0036] A plurality of dust suction grooves 300 are arranged on the welding platform 200 , and one end of the dust suction groove 300 faces the welding port 600 , that is, the dust suction groove 300 faces the ultrasonic welding head.
[0037] The metal welding slag generated during the welding process can fall into the dust suction groove 300 or into the dust suction port 100, so that the metal welding slag and active material powder dropped during the welding process of the electrode ear and the electrode plate can be promptly processed. The metal welding slag is sucked away at the same time as it is generated, and almost no metal welding slag accumulation is generated, thereby effectively ensuring the cleanliness requirements of the welding station and avoiding various performance risks caused by metal welding slag.
[0038] Reference Figure 2 In an optional embodiment, a connecting channel 700 is provided in the soldering station body, and the connecting channel 700 connects the two suction ports 100 .
[0039] In an optional embodiment, a dust suction installation port 800 is provided on the soldering station body, and the dust suction installation port 800 is connected to one of the dust suction ports 100 .
[0040] A dust suction installation port 800 is provided on the welding table body, and the pipeline of the dust suction equipment is installed in the dust suction installation port 800, so that the dust suction port 100 and the dust suction groove 300 generate negative pressure, so that metal welding slag, dust, etc. enter the dust suction port 100 and the dust suction groove 300, and then enter the pipeline of the dust suction equipment from the dust suction installation port 800, so as to realize the cleaning and collection of metal welding slag.
[0041] The two dust suction ports 100 are connected via the connecting channel 700 , that is, one dust suction port 100 is connected to the dust suction installation port 800 , and the other dust suction port 100 is connected to the dust suction port 100 via the connecting channel 700 , so that both dust suction ports 100 can generate negative pressure.
[0042] In an optional embodiment, the dust suction groove 300 is communicated with the connecting channel 700 .
[0043] In an optional embodiment, the interval between two adjacent dust suction grooves 300 is 10 mm.
[0044] In an optional embodiment, five dust suction grooves 300 are provided on the welding platform 200 .
[0045] There are five dust suction grooves 300 on the welding platform 200, and generally, the spacer between adjacent dust suction grooves 300 is 10 mm; and the dust suction groove 300 is connected to the connecting channel 700, so that negative pressure can be generated at the dust suction groove 300, and the metal welding slag dropped during the welding process of the pole piece and the pole ear can be sucked away through the dust suction groove 300.
[0046] In order to promptly process the metal welding slag dropped between the two dust suction grooves 300 , the distance between the two adjacent dust suction grooves 300 is limited, and generally the distance between the two dust suction grooves 300 is 10 mm.
[0047] Reference Figure 3 In an optional embodiment, a lower support plate 400 is provided at one end of the soldering station body, and the lower support plate 400 is provided at one end of the soldering station body away from the soldering port 600;
[0048] At least one dust suction hole 500 is disposed on the lower support plate 400 .
[0049] In an optional embodiment, two dust suction holes 500 are provided on the lower support plate 400 .
[0050] In an optional embodiment, the two dust suction holes 500 are spaced 40 mm apart.
[0051] In some embodiments, a lower support plate 400 is provided at one end of the soldering station body, and a dust suction hole 500 is provided on the lower support plate 400. Dust and the like on the plane on which the soldering station body is installed can be sucked away through the dust suction hole 500 to ensure that the operating plane is clean and tidy.
[0052] In an optional embodiment, the upper end surface of the welding platform 200 is lower than the upper end surface of the welding platform body.
[0053] The ultrasonic welding station provided by the utility model has two dust suction ports 100 on its welding station body, and the ultrasonic welding head is assembled at the welding port 600. During the welding process of the pole piece and the pole plate, the metal welding slag generated can be promptly processed by the dust suction groove 300 and the dust suction port 100, so as to avoid various short circuit problems caused by the metal welding slag and avoid the desoldering defects of the pole ear and the pole plate caused by the metal powder.
[0054] The material of the ultrasonic welding table is generally steel; the ultrasonic welding table can remove the dust generated during continuous welding operations, ensure the cleanliness of the ultrasonic welding head and the surrounding area of the ultrasonic welding table, and maintain the small environment to meet the Class 7 laboratory-level cleanliness standard.
[0055] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.
Claims
1. An ultrasonic welding station, characterized in that: It comprises a welding platform body, and a dust suction port (100) is respectively arranged on both sides of the welding platform body in a first direction; a welding platform (200) is arranged between the two dust suction ports (100); A plurality of dust suction grooves (300) extending along a second direction are arranged on the welding platform (200), and a welding port (600) is arranged at one end of the welding platform (200), wherein the welding port (600) is used for assembling an ultrasonic welding head; The first direction is the length direction of the soldering platform body, and the second direction is the width direction of the soldering platform body.
2. The ultrasonic welding station according to claim 1, characterized in that: A connecting channel (700) is provided in the soldering station body, and the connecting channel (700) connects the two dust suction ports (100).
3. The ultrasonic welding station according to claim 2, characterized in that: A dust suction installation port (800) is provided on the soldering station body, and the dust suction installation port (800) is connected to one of the dust suction ports (100).
4. The ultrasonic welding station according to claim 2, characterized in that: The dust suction groove (300) is in communication with the connecting channel (700).
5. The ultrasonic welding station according to claim 1, characterized in that: The interval between two adjacent dust suction grooves (300) is 10 mm.
6. The ultrasonic welding station according to claim 5, characterized in that: Five dust suction grooves (300) are arranged on the welding platform (200).
7. The ultrasonic welding station according to claim 1, characterized in that: A lower support plate (400) is provided at one end of the soldering platform body, and the lower support plate (400) is provided at an end of the soldering platform body away from the soldering port (600); At least one dust suction hole (500) is provided on the lower support plate (400).
8. The ultrasonic welding station according to claim 7, characterized in that: The lower support plate (400) is provided with two dust suction holes (500).
9. The ultrasonic welding station according to claim 8, characterized in that: The two dust suction holes (500) are spaced 40 mm apart.
10. The ultrasonic welding station according to claim 1, characterized in that: The upper end surface of the welding platform (200) is lower than the upper end surface of the welding platform body.