A terminal assembly, plug, connector, and vehicle charging system.

Abstract

This utility model relates to the field of vehicle charging head technology, and more particularly to a terminal assembly, plug, connector, and vehicle charging system. The terminal assembly includes a plug and a wire harness. The wire harness includes an insulating layer, a first wire harness metal layer, and a second wire harness metal layer. The first wire harness metal layer covers the outside of the second wire harness metal layer, and the insulating layer covers a portion of the outer surface of the first wire harness metal layer, so that the first wire harness metal layer has a soldering area exposed to the insulating layer. The plug includes a first plug metal layer and a second plug metal layer. The side of the first plug metal layer facing the second plug metal layer is connected to the second plug metal layer. The first plug metal layer and the first wire harness metal layer are made of the same material. The soldering area is soldered to the first plug metal layer. This effectively avoids the electro-corrosion effect between metals.

Description

Technical Field

[0001] This utility model relates to the field of vehicle charging head technology, and in particular to a terminal assembly, a plug, and a vehicle charging system. Background Technology

[0002] An existing vehicle charging system includes a battery pack, a socket, a plug, and a charging head. The battery pack is mounted on the vehicle frame, the charging head is mounted on the vehicle body, the socket is electrically connected to the battery pack, the terminals of the plug are soldered to a high-voltage wiring harness, and the plug and socket are mated together, such that the terminals of the plug and the terminals of the socket are mated together. The end of the high-voltage wiring harness away from the plug is electrically connected to the charging head. During charging, the charging gun is plugged into the charging head, and the current enters the charging head through the charging gun, and is transmitted to the battery pack through the charging head and the high-voltage wiring harness, thereby charging the battery pack.

[0003] Over time, existing vehicle charging systems are prone to electrolytic corrosion at the welded areas of the high-voltage wiring harness and plug terminals. Summary of the Invention

[0004] This utility model provides a terminal assembly, plug, connector, and vehicle charging system, aiming to solve the problem that, over time, existing vehicle charging systems are prone to electro-corrosion at the welding areas of the high-voltage wiring harness and plug terminals.

[0005] This utility model provides a terminal assembly, including a plug and a wire harness. The wire harness includes an insulating layer, a first wire harness metal layer and a second wire harness metal layer. The first wire harness metal layer covers the outside of the second wire harness metal layer, and the insulating layer covers a portion of the outer surface of the first wire harness metal layer, so that the first wire harness metal layer has a soldering area exposed to the insulating layer.

[0006] The insert includes a first insert metal layer and a second insert metal layer, wherein the side of the first insert metal layer facing the second insert metal layer is connected to the second insert metal layer;

[0007] The first insert metal layer is made of the same material as the first wire harness metal layer, and the welding area is welded to the first insert metal layer.

[0008] Optionally, there are two first insert metal layers, which are disposed opposite each other on both sides of the thickness direction of the second insert metal layer.

[0009] Optionally, the insert is plate-shaped, the wire harness is plate-shaped, and along the length of the wire harness, the dimensions of the first wire harness metal layer and the second wire harness metal layer are both larger than the dimensions of the insulating layer. The side of the first wire harness metal layer facing the insert is welded to the side of the first insert metal layer facing the wire harness.

[0010] Optionally, the insert is plate-shaped, the wire harness is plate-shaped, and the first wire harness metal layer on the side of the wire harness facing the insert is exposed to the insulating layer and welded to the side of the first insert metal layer facing the wire harness.

[0011] Optionally, the thickness of the second wire harness metal layer is b, the thickness of the insulating layer is c, and the thickness of the first wire harness metal layer is a, that is:

[0012] b > c > 2a.

[0013] Optionally, the density of the second wire harness metal layer is less than the density of the first wire harness metal layer.

[0014] Optionally, the thickness of the first insert metal layer is less than the thickness of the second insert metal layer, and the density of the second insert metal layer is less than the density of the first insert metal layer.

[0015] According to the terminal assembly provided in this embodiment of the present invention, a first wire harness metal layer is disposed between an insulating layer and a second wire harness metal layer. The first wire harness metal layer has a welding area exposed to the insulating layer. The welding area is welded to the first insert metal layer of the insert. The first wire harness metal layer and the first insert metal layer are made of the same material, which can effectively avoid the electro-corrosion effect between metals under long-term use.

[0016] This utility model embodiment also provides a plug, including a housing and the aforementioned terminal assembly, wherein the terminal assembly is installed in the housing, and the end of the insert away from the wire harness is exposed in the housing.

[0017] This utility model embodiment also provides a connector, including a socket and the above-mentioned plug. The socket includes a housing and terminals, the terminals being exposed outside the housing, and the terminals being plugged into the insert.

[0018] This utility model embodiment also provides a vehicle charging system, including a battery pack, a charging head and the aforementioned connector, wherein the socket is electrically connected to the battery pack, and the end of the wiring harness away from the plug is electrically connected to the charging head. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments of this utility model will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1This is a schematic diagram of the structure of a terminal assembly provided in an embodiment of the present invention. Figure 1 ;

[0021] Figure 2 for Figure 1 Another perspective;

[0022] Figure 3 for Figure 2 A sectional view along line AA.

[0023] Reference numerals in the accompanying drawings: 1. Wire harness; 2. Prong insert; 3. First wire harness metal layer; 4. Second wire harness metal layer; 5. Insulation layer; 6. Soldering area; 7. First prong metal layer; 8. Second prong metal layer. Detailed Implementation

[0024] To make the technical problems solved, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0026] like Figures 1 to 3 As shown, one embodiment of the present invention provides a terminal assembly, including a plug 2 and a wire harness 1. The wire harness 1 includes an insulating layer 5, a first wire harness metal layer 3 and a second wire harness metal layer 4. The first wire harness metal layer 3 covers the outside of the second wire harness metal layer 4, and the insulating layer 5 covers a portion of the outer surface of the first wire harness metal layer 3, so that the first wire harness metal layer 3 has a soldering area 6 exposed to the insulating layer 5.

[0027] The insert 2 includes a first insert metal layer 7 and a second insert metal layer 8, with the side of the first insert metal layer 7 facing the second insert metal layer 8 connected to the second insert metal layer 8.

[0028] The first insert metal layer 7 is made of the same material as the first wire harness metal layer 3, and the welding area 6 is welded to the first insert metal layer 7.

[0029] In this embodiment, the first wire harness metal layer 3 is disposed between the insulating layer 5 and the second wire harness metal layer 4. The first wire harness metal layer 3 has a welding area 6 exposed to the insulating layer 5. The welding area 6 is welded to the first insert metal layer 7 of the insert 2. The first wire harness metal layer 3 and the first insert metal layer 7 are made of the same material, which can effectively avoid the electro-corrosion effect between metals under long-term use.

[0030] In one embodiment, there are two first insert metal layers 7, which are disposed opposite each other on both sides of the thickness direction of the second insert metal layer 8.

[0031] In this embodiment, there are two first insert metal layers 7. Along the thickness direction of the second insert metal layer 8, the two first insert metal layers 7 are respectively disposed on both sides of the second insert metal layer 8, which facilitates the improvement of the conductivity of the insert 2 and is more conducive to the insertion and mating of the insert 2 with the terminals of the connected socket.

[0032] In one embodiment, the insert 2 is plate-shaped, the wire harness 1 is plate-shaped, and along the length direction of the wire harness 1, the dimensions of the first wire harness metal layer 3 and the second wire harness metal layer 4 are both larger than the dimensions of the insulating layer 5. The side of the first wire harness metal layer 3 facing the insert 2 is welded to the side of the first insert metal layer 7 facing the wire harness 1.

[0033] In this embodiment, the insert 2 is plate-shaped and the wire harness 1 is plate-shaped. Along the length direction of the wire harness 1, the lengths of the first wire harness metal layer 3 and the second wire harness metal layer 4 are the same. The length of the first wire harness metal layer 3 is greater than the length of the insulation layer 5. The portion of the first wire harness metal layer 3 exposed outside the insulation layer 5 forms a welding area 6. The welding area 6 is welded and fixed to the first insert metal layer.

[0034] In this embodiment, the dimensions of the first wire harness metal layer 3 and the second wire harness metal layer 4 are both larger than the dimensions of the insulating layer 5, which facilitates design and manufacturing.

[0035] In one embodiment, the thickness of the second wire harness metal layer 4 is b, the thickness of the insulating layer 5 is c, and the thickness of the first wire harness metal layer 3 is a, i.e., b > c > 2a.

[0036] In this embodiment, the thickness of the second wire harness metal layer 4 is b, the thickness of the insulation layer 5 is c, and the thickness of the first wire harness metal layer 3 is a, where b > c > 2a. The density of the second wire harness metal layer 4 is less than the density of the first wire harness metal layer 3, and the density of the first wire harness metal layer 3 is larger, resulting in a smaller volume ratio. This reduces the overall weight of the wire harness 1 while ensuring its conductivity. The volume ratio of the insulation layer 5 outside the wire harness 1 is also greater than that of the first wire harness metal layer 3, which helps to improve the insulation performance of the wire harness 1 while ensuring its conductivity.

[0037] In one embodiment, the thickness of the first insert metal layer 7 is less than the thickness of the second insert metal layer 8, and the density of the second insert metal layer 8 is less than the density of the first insert metal layer 7.

[0038] In this embodiment, the thickness of the first insert metal layer 7 is less than the thickness of the second insert metal layer 8, and the density of the second insert metal layer 8 is less than the density of the first insert metal layer 7, which can reduce the overall mass of the insert 2.

[0039] In one embodiment, the insulating layer 5 has a gap between the end near the insert 2 and the insert 2 to facilitate soldering.

[0040] In one embodiment, the first wire harness metal layer 3 and the second insert metal layer 8 are both copper, and the second wire harness metal layer 4 and the second insert metal layer 8 are both aluminum.

[0041] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0042] According to the terminal assembly provided in this embodiment of the present invention, the first wire harness metal layer 3 is disposed between the insulating layer 5 and the second wire harness metal layer 4. The first wire harness metal layer 3 has a welding area 6 exposed to the insulating layer 5. The welding area 6 is welded to the first insert metal layer 7 of the insert 2. The first wire harness metal layer 3 and the first insert metal layer 7 are made of the same material, which can effectively avoid the electro-corrosion effect between metals under long-term use.

[0043] In addition, one embodiment of the present invention also provides a plug, including a housing and the aforementioned terminal assembly, wherein the terminal assembly is installed in the housing, and the end of the insert 2 away from the wire harness 1 is exposed outside the housing.

[0044] In addition, one embodiment of the present invention also provides a connector, including a socket and the aforementioned plug. The socket includes a housing and terminals, with the terminals exposed outside the housing and the terminals engaging with the insert 2.

[0045] In addition, one embodiment of the present invention also provides a vehicle charging system, including a battery pack, a charging head and the aforementioned connector, wherein the socket is electrically connected to the battery pack and the end of the wiring harness 1 away from the plug is electrically connected to the charging head.

[0046] In other embodiments, the insert 2 is plate-shaped, the wire harness 1 is plate-shaped, and the first wire harness metal layer 3 of the wire harness 1 facing the insert 2 is exposed on the insulating layer 5. The exposed portion forms a welding area 6, which is welded to the first insert metal layer 7 facing the wire harness 1.

[0047] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A terminal assembly, characterized in that, Includes a insert (2) and a wire harness (1). The wire harness (1) includes an insulation layer (5), a first wire harness metal layer (3) and a second wire harness metal layer (4). The first wire harness metal layer (3) covers the outside of the second wire harness metal layer (4). The insulation layer (5) covers a portion of the outer surface of the first wire harness metal layer (3) so that the first wire harness metal layer (3) has a soldering area (6) exposed to the insulation layer (5). The insert (2) includes a first insert metal layer (7) and a second insert metal layer (8), wherein the first insert metal layer (7) is connected to the second insert metal layer (8) on the side facing the second insert metal layer (8); The first insert metal layer (7) is made of the same material as the first wire harness metal layer (3), and the welding area (6) is welded to the first insert metal layer (7).

2. The terminal assembly according to claim 1, characterized in that, There are two first insert metal layers (7), and the two first insert metal layers (7) are disposed opposite each other on both sides of the thickness direction of the second insert metal layer (8).

3. The terminal assembly according to claim 1, characterized in that, The insert (2) is plate-shaped, and the wire harness (1) is plate-shaped. Along the length of the wire harness (1), the dimensions of the first wire harness metal layer (3) and the second wire harness metal layer (4) are both larger than the dimensions of the insulation layer (5). The side of the first wire harness metal layer (3) facing the insert (2) is welded to the side of the first insert metal layer (7) facing the wire harness (1).

4. The terminal assembly according to claim 1, characterized in that, The insert (2) is plate-shaped, the wire harness (1) is plate-shaped, and the first wire harness metal layer (3) of the wire harness (1) facing the insert (2) is exposed on the insulating layer (5) and welded to the first insert metal layer (7) facing the wire harness (1).

5. The terminal assembly according to claim 3, characterized in that, The thickness of the second wire harness metal layer (4) is b, the thickness of the insulating layer (5) is c, and the thickness of the first wire harness metal layer (3) is a, that is: b > c > 2a.

6. The terminal assembly according to claim 5, characterized in that, The density of the second wire harness metal layer (4) is less than the density of the first wire harness metal layer (3).

7. The terminal assembly according to claim 1, characterized in that, The thickness of the first insert metal layer (7) is less than the thickness of the second insert metal layer (8), and the density of the second insert metal layer (8) is less than the density of the first insert metal layer (7).

8. A plug, characterized in that, The device includes a housing and a terminal assembly as described in any one of claims 1 to 7, the terminal assembly being mounted in the housing, and the end of the insert (2) away from the wire harness (1) being exposed in the housing.

9. A connector, characterized in that, Includes a socket and the plug as described in claim 8, the socket including a housing and terminals, the terminals being exposed outside the housing and the terminals being plugged into the insert (2).

10. A vehicle charging system, characterized in that, It includes a battery pack, a charging head, and the connector as described in claim 9, wherein the socket is electrically connected to the battery pack, and one end of the wiring harness (1) away from the plug is electrically connected to the charging head.

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