Ultrasonic welding head and clamping plate type ultrasonic welding machine
By setting multiple vertical and parallel first and second welding teeth on the ultrasonic welding head, the problems of low area utilization and high electrode heating in lithium-ion battery welding are solved, achieving a welding effect with a larger welding area and lower heating efficiency.
Patent Information
- Application Number
- CN202423106064.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-16
- Publication Date
- 2026-02-13
- Estimated Expiration
- 2034-12-16
AI Technical Summary
Existing ultrasonic welding heads for lithium-ion batteries suffer from problems such as low area utilization, weak electrode tab welding leading to incomplete welds, and high electrode tab heat generation.
Design an ultrasonic welding head, with multiple first welding teeth and second welding teeth arranged on the main body of the welding head. The first direction and the second direction are perpendicular to and parallel to the welding plane. The cross-section of the welding teeth is circular or hexagonal. Gaps are set between the welding teeth to increase the welding area and reduce heat generation.
It improves the utilization rate of welding area, increases the welding area of electrode tabs, reduces the heating efficiency of electrode tabs, makes the welding stronger, and reduces the phenomenon of incomplete welding.
Smart Images
Figure CN223903102U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of ultrasonic welding, especially to an ultrasonic welding head and a clamping plate type ultrasonic welding machine. BACKGROUND
[0002] Ultrasonic welding is to use high-frequency vibration waves to transmit to the surfaces of two objects to be welded, and under pressure, the surfaces of the two objects are rubbed to form a fusion between the molecular layers.
[0003] The ultrasonic welding area is the effective area of the lithium battery tab current conduction, and the larger the welding area is, the smaller the tab carrier amount is, and the lower the heat generated by the tab is.
[0004] The existing ultrasonic welding head for lithium ion batteries has the problems of low area utilization, weak tab welding, and high tab heating. UTILITY MODEL CONTENTS
[0005] The utility model aims at providing an ultrasonic welding head and a clamping plate type ultrasonic welding machine to solve the technical problems of low area utilization, weak tab welding, and high tab heating.
[0006] The utility model provides an ultrasonic welding head, which comprises a welding head main body, a welding plane is arranged at one end of the welding head main body, a plurality of first welding teeth are arranged on the welding plane, and the first welding teeth are arranged along a first direction and a second direction.
[0007] Second welding teeth are arranged between the first welding teeth along the first direction and the second direction.
[0008] The first direction is perpendicular to the second direction, and the planes where the first direction and the second direction are located are parallel to the welding plane.
[0009] In an optional embodiment, the cross section of the first welding tooth is circular.
[0010] In an optional embodiment, the radius of the first welding tooth is 0.5 mm.
[0011] In an optional embodiment, the cross section of the second welding tooth is hexagonal.
[0012] In an optional embodiment, the hexagonal cross section of the second welding tooth is a parallelogram, which has two first long sides with equal length and parallel to each other, two first short sides with equal length and parallel to each other, and two second short sides with equal length and parallel to each other.
[0013] The length of the first long side is 0.9 mm, and the lengths of the first short side and the second short side are 0.5 mm.
[0014] In an optional embodiment, a first long side of a parallelogram of a cross section of the second welding tooth is arranged towards the first welding tooth.
[0015] In an optional embodiment, a fixed gap is formed between the first welding tooth and the second welding tooth, and a distance of the gap is 0.2mm.
[0016] In an optional embodiment, the first welding tooth is provided with the second welding tooth on both sides of the first direction and both sides of the second direction.
[0017] The four second welding teeth form an accommodation area, and the first welding tooth is arranged in the accommodation area.
[0018] The welding head body of the ultrasonic welding head has the first welding tooth and the second welding tooth, and the second welding tooth is arranged between two first welding teeth adjacent to each other in the first direction and the second direction; in this way, the welding head body can effectively increase the tab welding area and reduce the tab heating efficiency.
[0019] The utility model provides a kind of clamping plate type ultrasonic welding machine, including the ultrasonic welding head of any one of preceding embodiment.
[0020] In an optional embodiment, including upper clamping plate and lower clamping plate, the upper clamping plate is arranged at the upper end of the lower clamping plate, and at least one ultrasonic welding head is arranged on the side of the upper clamping plate towards the lower clamping plate, and at least one ultrasonic welding head is arranged on the side of the lower clamping plate towards the upper clamping plate.
[0021] The ultrasonic welding head on the upper clamping plate and the ultrasonic welding head on the lower clamping plate clamp the tab and the pole piece and make the tab and the pole piece welded.
[0022] Compared with the prior art, the clamping plate type ultrasonic welding machine provided by the utility model has the ultrasonic welding head provided by the utility model, thereby having all the beneficial effects of the ultrasonic welding head provided by the utility model. BRIEF DESCRIPTION OF DRAWINGS
[0023] In order to more clearly illustrate the specific embodiments of the utility model or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the specific embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating any creative labor.
[0024] Figure 1 The structure diagram of the ultrasonic welding head provided by the utility model embodiment is shown.
[0025] Figure 2 For Figure 1 The structure schematic view of the second welding tooth of the ultrasonic welding head is shown.
[0026] Icon: 100-welding plane; 200-first welding tooth; 300-second welding tooth; 400-gap; 500-accommodation area. DETAILED DESCRIPTION
[0027] The terms "first", "second", "third", etc. are only used for differentiation and description, and do not represent the arrangement serial number, and cannot be understood as indicating or implying relative importance.
[0028] In addition, the terms "horizontal", "vertical", "overhanging", etc. do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0029] In the description of the present application, it should be pointed out that the terms "inner", "outer", "left", "right", "upper", "lower", etc. indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application.
[0030] In the description of the present application, unless otherwise explicitly specified and limited, the terms "set", "mounted", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements.
[0031] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings.
[0032] Referring to Figure 1 and Figure 2 The utility model provides a kind of ultrasonic welding head, including welding head main body, welding plane 100 is provided in one end of the welding head main body, a plurality of first welding tooth 200 is provided on the welding plane 100, and a plurality of the first welding tooth 200 is arranged along first direction and second direction;
[0033] And second welding tooth 300 is provided between first direction and second direction adjacent two the first welding tooth 200;
[0034] The first direction and the second direction are perpendicular, and the plane in which the first direction and the second direction lie is parallel to the welding plane 100.
[0035] In some embodiments, at least one end of the welding head body of the ultrasonic welding head has a welding plane 100, and a plurality of first welding teeth 200 and a plurality of second welding teeth 300 are arranged on the welding plane 100; the first direction and the second direction lie in the same plane and are perpendicular; generally, the first direction and the second direction lie in the same horizontal plane, the plurality of first welding teeth 200 are arranged in multiple rows and multiple columns, the second welding teeth 300 are arranged between two adjacent first welding teeth 200, and the second welding teeth 300 are arranged between the first welding teeth 200 in the first direction and the second direction.
[0036] Such an arrangement is conducive to improving the strength of the ultrasonic welding head and improving the utilization rate of the welding plane 100 of the ultrasonic welding head and reducing the heating of the tabs.
[0037] In optional embodiments, the cross section of the first welding tooth 200 is circular.
[0038] In optional embodiments, the radius of the first welding tooth 200 is 0.5 mm.
[0039] In optional embodiments, the cross section of the second welding tooth 300 is hexagonal.
[0040] In optional embodiments, the hexagonal cross section of the second welding tooth 300 is a parallelogram with two first long sides of equal length and parallel to each other, two first short sides of equal length and parallel to each other, and two second short sides of equal length and parallel to each other.
[0041] The length of the first long side is 0.9 mm, and the lengths of the first short side and the second short side are 0.5 mm.
[0042] In optional embodiments, the first long side of the parallelogram cross section of the second welding tooth 300 is arranged towards the first welding tooth 200.
[0043] In optional embodiments, a fixed gap 400 is formed between the first welding tooth 200 and the second welding tooth 300, and the spacing of the gap 400 is 0.2 mm.
[0044] In optional embodiments, the first welding tooth 200 is arranged in the first direction and the second direction.
[0045] The four second welding teeth 300 form a containing area 500, and the first welding tooth 200 is arranged in the containing area 500.
[0046] In some embodiments, the radius of the first welding tooth 200 is 0.5mm, the length of the first side of the second welding tooth 300 is 0.9mm, the length of the first short side and the second short side is 0.5mm; and the gap 400 between the first welding tooth 200 and the second welding tooth 300 is 0.2mm; compared with the prior art, the gap between the welding teeth is reduced, the effective welding area of the ultrasonic welding head is increased, thereby effectively increasing the tab welding area and reducing the tab heating efficiency. Data comparison shows that the area utilization rate of the ultrasonic welding head of the present application is 18.92% larger than that of the original square welding head, which effectively increases the welding area and reduces the electronic current per unit area of the tab welding area to slow down the tab heating.
[0047] The welding head body of the ultrasonic welding head has the first welding tooth 200 and the second welding tooth 300, and the second welding tooth 300 is arranged between the first welding tooth 200 in the first direction and the second direction; in this way, the welding head body can effectively increase the tab welding area and reduce the tab heating efficiency.
[0048] The utility model provides a kind of clamping plate type ultrasonic welding machine, including the ultrasonic welding head of any one of preceding embodiment.
[0049] In optional embodiment, including upper clamping plate and lower clamping plate, including upper clamping plate and lower clamping plate, the upper clamping plate is arranged in the upper end of the lower clamping plate, at least one ultrasonic welding head is arranged on the side of the upper clamping plate towards the lower clamping plate, at least one ultrasonic welding head is arranged on the side of the lower clamping plate towards the upper clamping plate.
[0050] The ultrasonic welding head on the upper clamping plate and the ultrasonic welding head on the lower clamping plate clamp tab and pole piece and make tab and pole piece weld.
[0051] Compared with the prior art, the clamping plate type ultrasonic welding machine provided by the utility model has the ultrasonic welding head provided by the utility model, thereby having all the beneficial effects of the ultrasonic welding head provided by the utility model.
[0052] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still replace the technical solutions recorded in the foregoing embodiments without making the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.
Claims
1. An ultrasonic horn characterized by, The ultrasonic welding head comprises a welding head body, a welding plane (100) is arranged at one end of the welding head body, a plurality of first welding teeth (200) are arranged on the welding plane (100), and the plurality of first welding teeth (200) are arranged along a first direction and a second direction; A second welding tooth (300) is arranged between two first welding teeth (200) adjacent in the first direction and the second direction; The first direction and the second direction are perpendicular, and a plane in which the first direction and the second direction are located is parallel to the welding plane (100); The cross section of the second welding tooth (300) is a hexagon, and the hexagon of the cross section of the second welding tooth (300) is a parallelogram, which has two first long sides with equal length and parallel to each other, two first short sides with equal length and parallel to each other, and two second short sides with equal length and parallel to each other; The length of the first long side is 0.9 mm, and the lengths of the first short side and the second short side are 0.5 mm.
2. The ultrasonic horn of claim 1, wherein The cross section of the first welding tooth (200) is a circle.
3. The ultrasonic horn of claim 1, wherein, The radius of the first welding tooth (200) is 0.5 mm.
4. The ultrasonic horn of claim 1, wherein, The first long side of the parallelogram of the cross section of the second welding tooth (300) is arranged towards the first welding tooth (200).
5. The ultrasonic horn of claim 1, wherein, A fixed gap (400) is formed between the first welding tooth (200) and the second welding tooth (300), and the distance of the gap (400) is 0.2 mm.
6. The ultrasonic horn of claim 1, wherein, The first welding tooth (200) is arranged in the accommodating area (500). The ultrasonic welding head is arranged on the upper clamping plate and the lower clamping plate.
7. A clamp plate ultrasonic welding machine characterized by comprising: The upper clamping plate and the lower clamping plate are arranged on the upper clamping plate and the lower clamping plate, respectively, and at least one ultrasonic welding head is arranged on one side of the upper clamping plate and the lower clamping plate, respectively.
8. The clamp plate ultrasonic welding machine according to claim 7, characterized in that, The ultrasonic welding heads on the upper clamping plate and the lower clamping plate clamp the tab and the pole piece and weld the tab and the pole piece.