Split type terminal structure of charging interface

Abstract

The utility model relates to the technical field of electric automobile parts, in particular to a split type terminal structure of a charging interface. Comprising a terminal shell, a reed and a gland, the reed is located in the terminal shell, the end of the reed is connected with the gland, and the front end of the terminal shell is connected with the connecting block through resistance welding. According to the whole structure, different copper bars or aluminum bars can be selected according to materials of wires needing to be connected, and therefore cost reduction and efficiency improvement are achieved. In addition, the lead and the copper bar are welded into a whole through ultrasonic waves and then are welded into a whole with the terminal assembly, so that the damage between the terminal reed and the terminal shell caused by high-frequency vibration of ultrasonic welding can be avoided; and meanwhile, the problems of uncontrollable damage between the gland and the reed, unknown deformation of the gland body caused by high-frequency vibration and looseness between the gland and the terminal shell can be avoided.

Description

Technical Field

[0001] This utility model relates to a, and more particularly to, a split-type terminal structure for a charging interface. Background Technology

[0002] The power terminals of existing electric vehicle DC charging sockets are integrated terminals. On the one hand, the welding parts require additional machining during the cold heading process of the terminal shell. At the same time, the surface treatment of the terminal requires overall rack plating or barrel plating, and the welding parts need to be machined again to avoid the impact of different plating thicknesses on the welding stability. On the other hand, the connection with the cable uses ultrasonic welding technology, which is prone to the following defects during the welding process: First, the pressure cap may loosen, making the terminal unusable; second, the pressure cap may deform, causing abnormalities such as the charging gun or plug gun being unable to be inserted or removed; third, the terminal spring may break or deform, leading to abnormally high temperature rise during the charging process. Utility Model Content

[0003] The present invention aims to solve the above-mentioned defects and provide a separate terminal structure for the charging interface.

[0004] To overcome the defects in the background technology, the technical solution adopted by this utility model to solve its technical problem is as follows: This charging interface split terminal structure includes a terminal assembly and a cable. The front end of the cable is provided with a flattened part. The upper or lower end of the flattened part is welded to a connecting block by ultrasonic welding. The terminal assembly includes a terminal shell, a spring and a pressure cover. The spring is located inside the terminal shell and its end is connected to the pressure cover. The front end of the terminal shell is connected to the connecting block by resistance welding.

[0005] According to another embodiment of the present invention, the terminal housing is further provided with a flat groove at its front end, and the connecting block is inserted into the groove.

[0006] According to another embodiment of the present invention, the terminal housing is formed directly in one step by cold heading, and the surface of the terminal housing is provided with an electroplating process layer.

[0007] According to another embodiment of the present invention, the connecting block is further comprising a copper busbar or an aluminum busbar.

[0008] According to another embodiment of the present invention, the cable is further comprising a copper conductor or an aluminum conductor.

[0009] The beneficial effects of this utility model are: this split terminal structure of the charging interface can select different copper or aluminum busbars according to the material of the required connecting wires, thereby achieving cost reduction and efficiency improvement. Regardless of whether copper or aluminum busbars are selected, no surface electroplating process is required, thus reducing terminal costs. In addition, the wires and copper busbars are first ultrasonically welded together, and then welded together with the terminal assembly. This can avoid damage between the terminal spring and the terminal shell caused by the high-frequency vibration of ultrasonic welding. At the same time, it can avoid uncontrollable damage between the cover and the spring, unknown deformation of the cover body caused by high-frequency vibration, and loosening between the cover and the terminal shell. Attached Figure Description

[0010] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a structural diagram of the connecting block and terminal assembly;

[0013] Figure 3 This is a structural schematic diagram of the cross-sectional view of this utility model;

[0014] The components are: 1. Cable, 2. Connecting block, 3. Terminal assembly, 4. Flattened part, 5. Groove, 6. Terminal housing, 7. Spring, 8. Cover. Detailed Implementation

[0015] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. All other embodiments obtained by those skilled in the art without creative effort in accordance with the embodiments of the basic utility model are within the protection scope of this utility model.

[0016] like Figure 1-3As shown in the figure, the cable 1 and terminal assembly 3 are included. The front end of the cable 1 has a flattened portion 4. The upper or lower end of the flattened portion 4 is welded to the connecting block 2 by ultrasonic welding. The terminal assembly 3 includes a terminal shell 6, a spring 7, and a pressure cap 8. The spring 7 is located inside the terminal shell 6 and its end is connected to the pressure cap 8. The front end of the terminal shell 6 is connected to the connecting block 2 by resistance welding. The terminal shell 6 can be directly formed in one piece by cold forging. At the same time, the surface treatment of the terminal shell 6 can be directly carried out by integral electroplating process, without the need for masking or post-processing of the welding parts. The connecting block 2 is directly stamped out by mold. In the assembly production, the cable and the connecting block 2 are first welded together by ultrasonic welding. The terminal shell 6, spring 7, and pressure cap 8 are pre-assembled into a terminal assembly semi-finished product. Then, the welded connecting block 2 and the terminal assembly semi-finished product are welded together by welding, thereby realizing the assembly of the terminal and the wire.

[0017] The front end of the terminal housing 6 is provided with a flat slot 5, and the connecting block 2 is inserted into the slot 5. This assembly method is simple and quick.

[0018] The terminal housing 6 is formed directly in one piece by cold heading, and the surface of the terminal housing 6 is provided with an electroplating layer.

[0019] Connector 2 is made of copper or aluminum busbar, and cable 1 is made of copper or aluminum wire. The terminal structure can be customized by selecting different copper or aluminum busbars based on the material of the required connecting wire, thereby reducing costs and increasing efficiency. When the required connecting wire is copper, the connector can be made of copper, and the copper busbar does not require surface electroplating, thus reducing terminal costs. When the required connecting wire is aluminum, the connector can be directly replaced with an aluminum busbar, again without surface electroplating, reducing the overall terminal cost.

[0020] Cable 1 and connector 2 are first ultrasonically welded together, and then welded together with terminal assembly. This avoids damage between terminal spring and terminal housing caused by high-frequency vibration of ultrasonic welding, as well as uncontrollable damage between cover and spring, unknown deformation of cover body caused by high-frequency vibration, and loosening between cover and terminal housing.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A split-type terminal structure for a charging interface, comprising a terminal assembly (3) and a cable (1), characterized in that: The front end of the cable (1) is provided with a flattened part (4). The upper or lower end of the flattened part (4) is welded to the connecting block (2) by ultrasonic welding process. The terminal assembly (3) includes a terminal shell (6), a spring (7) and a pressure cover (8). The spring (7) is located inside the terminal shell (6) and its end is connected to the pressure cover (8). The front end of the terminal shell (6) is connected to the connecting block (2) by resistance welding.

2. The charging interface split terminal structure as described in claim 1, characterized in that: The front end of the terminal housing (6) is provided with a flat slot (5), and the connecting block (2) is inserted into the slot (5).

3. The charging interface split terminal structure as described in claim 1, characterized in that: The terminal housing (6) is formed directly in one step by cold forging, and the surface of the terminal housing (6) is provided with an electroplating process layer.

4. The split terminal structure for a charging interface as described in claim 1, characterized in that: The connecting block (2) is a copper busbar or an aluminum busbar.

5. The split terminal structure for a charging interface as described in claim 1, characterized in that: The cable (1) is a copper conductor or an aluminum conductor.

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