Aluminum ultrasonic welding terminal

Abstract

The utility model provides an aluminum ultrasonic welding terminal which comprises an aluminum terminal body, the aluminum terminal body is provided with a flat function part, and the function part is connected with a conductor ring tightly attached to the function part. According to the utility model, the conductor ring tightly attached to the aluminum terminal body is arranged on the aluminum terminal body, so that the strength of the aluminum terminal is increased, and the problem of short service life caused by torque attenuation of the aluminum terminal is avoided; the terminal provided by the utility model can replace a large number of existing copper welding terminals, so that the weight of the terminal is greatly reduced, the cost of the terminal is reduced, and the terminal has very high practicability and economic popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of terminals, in particular to an aluminum ultrasonic welding terminal. Background Art

[0002] With the rapid development of new energy vehicles in my country, the demand for lightweight vehicles is increasing. Coupled with the increasingly fierce competition among major OEMs for cost savings, the automotive wiring harness industry is bound to pursue low-cost and lightweight development. For automotive wiring harnesses, replacing ultrasonically welded copper terminals with aluminum terminals significantly reduces both terminal weight (30%) and terminal cost (25%). However, this approach also presents torque attenuation, resulting in a shorter service life for the aluminum terminals. Therefore, addressing the challenges of replacing ultrasonically welded copper terminals with aluminum terminals is a major research hotspot in the automotive industry.

[0003] A Chinese invention patent application with a publication date of December 27, 2022 and publication number CN 115528441 A discloses a novel aluminum terminal that electrically connects an aluminum cable and an electrical device and conducts current. The aluminum terminal includes a connecting portion and a functional portion that are interconnected, and at least a portion of the base material of the connecting portion and the functional portion is made of aluminum. At least one protrusion is provided on at least a portion of the surface of the connecting portion and / or the functional portion. The connecting portion is connected to the conductive portion of the aluminum cable, the functional portion is connected to the electrical device, and the protrusion is pierced and connected to the conductive portion of the aluminum cable and / or the electrical device. However, this device cannot solve the problem of torque attenuation in aluminum terminals. Summary of the Invention

[0004] In response to the above technical problems, the present invention proposes an aluminum ultrasonic welding terminal, which is used to solve the problem of torque attenuation in the aluminum terminal in the prior art.

[0005] In order to achieve the above object, the technical solution of the utility model is achieved as follows:

[0006] An aluminum ultrasonic welding terminal includes an aluminum terminal body, a flat functional portion provided on the aluminum terminal body, and a conductor ring connected to the functional portion. By providing a conductor ring that closely fits the aluminum terminal body, the utility model increases the strength of the aluminum terminal and avoids the problem of torque attenuation and resulting short service life of the aluminum terminal.

[0007] Furthermore, the functional portion and the conductor ring are provided with communicating through holes.

[0008] Furthermore, the aluminum terminal body is a flat plate structure.

[0009] Furthermore, the through hole on the functional part is a stepped hole, which includes a large circular hole and a small circular hole arranged up and down, and the large circular hole and the small circular hole are coaxially connected.

[0010] Furthermore, the conductor ring includes a large circular piece embedded in the large circular hole and a small circular piece embedded in the small circular hole, and the small circular piece and the large circular piece are an integrated structure.

[0011] Furthermore, the through holes on the conductor ring include a conductor ring circular hole arranged in the small circular ring piece and a conductor ring large hole arranged in the large circular ring piece, and the conductor ring large hole is coaxially connected to the conductor ring circular hole.

[0012] Furthermore, the large hole of the conductor ring is larger than the circular hole of the conductor ring, and the large hole of the conductor ring is smaller than the small circular hole.

[0013] Furthermore, the large hole of the conductor ring is a polygonal hole.

[0014] Furthermore, the upper surface and / or lower surface of the conductor ring protrudes from the upper surface and / or lower surface of the functional part.

[0015] Furthermore, the aluminum terminal body is provided with a pit-shaped press rib at a position away from the functional portion.

[0016] Beneficial effects of the utility model:

[0017] 1. The present invention increases the strength of the aluminum terminal by providing a conductor ring that fits tightly with the aluminum terminal body, thereby avoiding the problem of torque attenuation and short service life of the aluminum terminal;

[0018] 2. The present invention provides a copper conductor ring at the through hole of the aluminum terminal body, so that when the terminal of the present invention is connected to the vehicle body, the terminal is connected to the vehicle body through the copper conductor ring, thereby avoiding the occurrence of electrochemical corrosion;

[0019] 3. The terminal of the utility model can replace a large number of existing copper welding terminals, greatly reducing the weight of the terminal and lowering the cost of the terminal. It has high practicality and economic promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model.

[0022] Figure 2 It is a schematic diagram of the top structure of the utility model.

[0023] Figure 3 It is a schematic cross-sectional structural diagram of the present utility model.

[0024] Figure 4 for Figure 3 Schematic diagram of the locally enlarged structure of A in .

[0025] In the figure: 1. Conductor ring, 2. Aluminum terminal body, 11. Conductor ring circular hole, 12. Polygonal hole, 21. Stepped hole, 3. Pit-shaped ribs. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figures 1 to 4 As shown, the aluminum ultrasonic welding terminal described in Example 1 of the present invention includes an aluminum terminal body 2, which is provided with a flat functional portion, and a conductor ring 1 connected to the functional portion in close contact with the functional portion. This increases the strength of the aluminum terminal and prevents torque attenuation, which can reduce the service life of the aluminum terminal. In this embodiment, the conductor ring 1 and the aluminum terminal body 2 are joined by friction welding.

[0028] Furthermore, the functional part and the conductor ring 1 are provided with communicating through holes, so as to facilitate the connection between the functional part 2 and an external electrical device.

[0029] In addition, the conductor ring is a copper ring, which not only avoids torque attenuation of the aluminum terminal, but also enables the terminal of the present invention to be connected to the copper material of the vehicle body through the copper conductor ring when connected to the vehicle body, thereby avoiding the occurrence of electrochemical corrosion.

[0030] Example 2 is different from Example 1 in that Figure 2 and Figure 3 As shown, the through hole on the functional part is a stepped hole 21, which includes a large circular hole and a small circular hole arranged up and down, and the large circular hole and the small circular hole are coaxially connected to form a through hole that passes through the functional part.

[0031] Furthermore, the conductor ring 1 includes a large circular piece embedded in the large circular hole and a small circular piece embedded in the small circular hole. Specifically, the small circular piece's shape matches the small circular hole, and the large circular piece's shape matches the large circular hole. Furthermore, the through-hole in the conductor ring 1 is smaller than the small circular hole. In this embodiment, the small circular piece and the large circular piece are integrally formed.

[0032] Furthermore, the through hole on the conductor ring 1 includes a conductor ring circular hole 11 provided in the small circular ring piece and a conductor ring large hole provided in the large circular ring piece, and the conductor ring large hole is coaxially connected to the conductor ring circular hole 11 to form a through hole penetrating the conductor ring 1 .

[0033] Furthermore, the conductor ring large hole is larger than the conductor ring circular hole 11, and the conductor ring large hole is smaller than the small circular hole, so that the lower side of the inner part of the large circular ring piece is connected with the upper side of the outer part of the small circular ring piece.

[0034] Example 3 differs from Example 2 in that the conductor ring's large hole is a polygonal hole 12. In this embodiment, the conductor ring's large hole is an octagonal hole. This facilitates welding the conductor ring 1 to the aluminum terminal body 2, and the welding machine fixture can utilize the polygonal hole 12 to secure the conductor ring.

[0035] Example 4 is different from Example 3 in that Figure 1 and Figure 2 As shown, in this embodiment, the aluminum terminal body 2 is a flat plate structure as a whole.

[0036] Example 5 differs from Example 4 in that the upper and / or lower surfaces of the conductor ring 1 protrude beyond the upper and / or lower surfaces of the functional portion. In this embodiment, the upper surface of the conductor ring 1 protrudes beyond the upper surface of the functional portion, and the lower surface of the conductor ring 1 protrudes beyond the lower surface of the functional portion. Furthermore, because the aluminum terminal body 2 is a flat plate of uniform thickness, the upper and lower surfaces of the conductor ring 1 both protrude beyond the upper and lower surfaces of the aluminum terminal body 2.

[0037] Example 6 is different from Example 1 in that Figure 1 As shown, the aluminum terminal body 2 is provided with a pit-shaped press rib 3 at a position away from the functional portion.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that any modification to the technical solutions described in the aforementioned embodiments, or any equivalent replacement of some or all of the technical features thereof, within the spirit and principles of the present invention, does not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and should all be included in the scope of protection of the present invention.

Claims

1. An aluminum ultrasonic welding terminal, characterized in that: The invention comprises an aluminum terminal body (2), wherein a flat functional part is provided on the aluminum terminal body (2), and a conductor ring (1) is connected to the functional part; the functional part and the conductor ring (1) are provided with mutually communicating through holes; the through hole on the functional part is a stepped hole, and the stepped hole comprises a large circular hole and a small circular hole arranged above and below, and the large circular hole and the small circular hole are coaxially connected; the conductor ring (1) comprises a large circular ring piece embedded in the large circular hole and a small circular ring piece embedded in the small circular hole, and the small circular ring piece and the large circular ring piece are an integrated structure; the conductor ring (1) is a copper ring.

2. The aluminum ultrasonic welding terminal according to claim 1, characterized in that: The aluminum terminal body (2) is a flat plate structure.

3. The aluminum ultrasonic welding terminal according to claim 1 or 2, characterized in that: The through hole on the conductor ring (1) comprises a conductor ring circular hole (11) arranged in the small circular ring piece and a conductor ring large hole arranged in the large circular ring piece, and the conductor ring large hole is coaxially connected to the conductor ring circular hole (11).

4. The aluminum ultrasonic welding terminal according to claim 3, characterized in that: The conductor ring large hole is larger than the conductor ring circular hole (11), and the conductor ring large hole is smaller than the small circular hole.

5. The aluminum ultrasonic welding terminal according to claim 3, characterized in that: The conductor ring large hole is a polygonal hole (12).

6. The aluminum ultrasonic welding terminal according to claim 1, 2, 4 or 5, characterized in that: The upper surface and / or lower surface of the conductor ring (1) protrudes from the upper surface and / or lower surface of the functional part.

7. The aluminum ultrasonic welding terminal according to claim 1, 2, 4 or 5, characterized in that: The aluminum terminal body (2) is provided with a pitted press rib (3) at a position away from the functional portion.

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