Large-current rainproof plug and socket for electric automobile

Abstract

The invention discloses a large-current rainproof plug and socket for an electric vehicle, a plug current-carrying member is of a streamline cone structure, the front part of the plug current-carrying member is strip-shaped, and the height of the rear part of the plug current-carrying member is gradually reduced; a plugging hole matched with the plug current-carrying piece in shape is formed in the center of the socket current-carrying piece of the socket, and the front end of the plugging hole is open; the socket current-carrying member is installed on the socket insulating seat, and the socket insulating seat is fixed on the inner wall of the socket box upper cover plate. The lengths of the socket current-carrying member and the plug current-carrying member are adjusted according to the magnitude of the charging current; a top plate is installed in an inner cavity of the socket box, and a plurality of springs are installed between the top plate and a bottom plate of the socket box. The current-carrying parts of the plug and the socket adopt special-shaped structures, the contact area is ensured, and in the charging operation process, the top plate tightly presses the plug in the plugging hole under the action of the spring, so that the plug is prevented from being separated from the socket. The structure of the charging pile is simplified, the plug is convenient to carry in an automobile, the manufacturing cost is low, and good application and popularization prospects are achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle charging equipment, and particularly to a large-current rainproof plug and socket for electric vehicles. Background Art

[0002] A charging pile, also known as an electric vehicle charging station or an electric vehicle power supply device, is a device that provides electric energy for electric vehicles, enabling electric vehicles to store sufficient electric energy to support their operation. With the rapid development of the new energy vehicle industry, the demand for charging piles is increasing day by day. The input end of the charging pile is directly connected to the AC power grid, and the output end is equipped with a charging plug for charging electric vehicles.

[0003] In a conventional ground charging pile, the charger consists of a rectifier that can convert the input alternating current into direct current and a power converter that can adjust the power of the direct current. By inserting the plug with a wire into the socket matching the electric vehicle, the direct current can be input into the on-vehicle battery for charging. The charger is provided with a locking lever to facilitate the insertion and removal of the plug, and at the same time, the lever can also provide a signal indicating that it has been locked to ensure safety. According to the communication between the charger and the vehicle battery management system, the power converter can adjust the DC charging power online, and the charger can display the charging voltage, charging current, charging amount, and charging cost.

[0004] The structure of the currently used charging piles is relatively complex, and the construction cost is high. Summary of the Invention

[0005] The purpose of the present invention is to provide a large-current rainproof plug and socket for electric vehicles, which reduces the construction cost of the charging pile and can conveniently provide charging services for vehicles.

[0006] To achieve the above purpose, the technical solution adopted by the present invention is as follows: A large-current rainproof plug and socket for electric vehicles includes a socket installed in a socket box and a plug adapted to the socket. The plug includes four plug current-carrying members of the same shape arranged side by side. The plug current-carrying members are installed on a plug insulating seat. The plug current-carrying member is a streamlined cone structure, with its front part being strip-shaped and the height of its rear part gradually decreasing; the rear part of the plug current-carrying member is connected to an electric vehicle charging gun through a wire; The socket includes four socket current-carrying members arranged side by side. The centers of the socket current-carrying members form a plugging hole adapted to the shape of the plug current-carrying member. The front end of the plugging hole is open. The front part of the plugging hole is a cuboid structure, and the rear part is a streamlined cone structure with a gradually decreasing bottom surface; the rear part of the socket current-carrying member is connected to a socket power line through a screw; the socket current-carrying member is installed on a socket insulating seat, and the socket insulating seat is fixed on the inner wall of the upper cover plate of the socket box; The lengths of the socket current-carrying member and the plug current-carrying member are adjusted according to the magnitude of the charging current; A top plate is installed in the inner cavity of the socket box, and several springs are installed between the top plate and the bottom plate of the socket box.

[0007] Preferably, the socket box is a cuboid box with an open front side wall, and the top of the front cover plate is hinged to the front side wall of the upper cover plate of the socket box.

[0008] Preferably, a power cord passing hole is opened at the bottom of the socket box, the lower end of the power cord passing hole is connected to a hollow column, and the bottom of the column is fixed on the base.

[0009] Preferably, a handle is installed on the outer side wall of the top plate.

[0010] Preferably, there are at least two springs, which are symmetrically installed on the left and right between the top plate and the socket box.

[0011] Preferably, a water retaining edge is installed at the top of the front side wall of the socket box.

[0012] Preferably, an inlet groove is opened at the position of the front side wall of the lower bottom plate of the socket box close to the passing hole.

[0013] In the present invention, the socket is installed on the inner wall of the upper cover plate of the socket box. When charging is required, the operator opens the front cover plate of the socket box, presses the handle to pull down the top plate, and then inserts the plug carried by the vehicle into the socket hole of the socket. The charging gun connected to the plug is firmly inserted into the vehicle charging socket, and the vehicle can be charged.

[0014] In the present invention, the socket is installed in the socket box, and a plug carried by the vehicle and adapted to the socket is provided. The front parts of the current-carrying members of the plug and the socket are both long strip-shaped, and the rear parts are streamlined cone structures. The cooperation of the special-shaped structures ensures the contact area, and at the same time facilitates the plug to be smoothly inserted into the socket hole of the socket. During the charging operation, the top plate presses the plug tightly in the socket hole under the action of the spring, preventing the plug from detaching from the socket and enhancing the reliability of the charging process. The present invention simplifies the structure of the charging pile, the plug is convenient for the vehicle to carry, and the manufacturing cost is low, having good prospects for popularization and application.

[0015] In the present invention, the socket is installed in the socket box, and a movable front cover plate is provided, which can prevent rainwater from entering the socket box and play a rainproof role.

[0016] In the present invention, an inlet groove is opened on the lower bottom plate of the socket box, which is convenient for the lead-out of the wire connected to the plug and does not affect the rainproof effect of the socket box. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a schematic structural diagram of the socket; Figure 3 It is a schematic diagram of the structure of the plug; Figure 4 It is a schematic diagram of the structure of the top plate and spring in the socket box; In the figure: 1, plug, 2, socket, 3, socket current-carrying part, 4, plug current-carrying part, 5, plug insulating seat, 6, socket insulating seat, 7, plug hole, 9, spring, 10, handle, 11, front cover, 12, top plate, 13, column, 14, socket box. DETAILED DESCRIPTION

[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings.

[0019] like Figures 1 to 4 A high-current rainproof plug and socket for electric vehicles shown in the figure comprises a socket 2 installed in a socket box 14, a plug 1 adapted to the socket 2, the plug 1 comprising four plug current-carrying members 4 of the same shape arranged side by side, the plug current-carrying members 4 being installed on a plug insulating seat 5, the plug current-carrying member 4 being a streamlined cone structure, the front portion of which is long and the rear portion is gradually reduced in height; the rear portion of the plug current-carrying member 4 is connected to the vehicle charging gun through a wire; The socket 2 includes four socket current-carrying members 3 arranged side by side, the center of the socket current-carrying member 3 forms a plug hole 7 that matches the shape of the plug current-carrying member 4, the front end of the plug hole 7 is open, the front part of the plug hole 7 is a rectangular parallelepiped structure, and the rear part is a streamlined cone structure with a gradually lowered bottom surface; the rear part of the socket current-carrying member 3 is connected to the socket power cord through screws; the socket current-carrying member 3 is installed on the socket insulating seat 6, and the socket insulating seat 6 is fixed on the inner wall of the upper cover of the socket box 14; The lengths of the socket current-carrying member 3 and the plug current-carrying member 4 are adjusted according to the magnitude of the charging current; A top plate 12 is installed in the inner cavity of the socket box 14 , and a plurality of springs 9 are installed between the top plate 12 and the bottom plate of the socket box 14 .

[0020] The socket box 14 is a rectangular parallelepiped box body with an open front side wall. The top of the front cover plate 11 is hinged to the front side wall of the upper cover plate of the socket box 14 .

[0021] A power line hole is formed at the bottom of the socket box 14 , and the lower end of the power line hole is connected to the hollow column 13 , and the bottom of the column 13 is fixed on the base.

[0022] A handle 10 is mounted on the outer side wall of the top plate 12 .

[0023] There are at least two springs 9 which are symmetrically installed between the top plate 12 and the socket box 14 .

[0024] A water retaining edge is installed on the top of the front side wall of the socket box 14.

[0025] An inlet groove is formed at a position on the front side wall of the lower bottom plate of the socket box 14 near the wire passing hole.

[0026] In the present invention, the socket 2 is installed on the inner wall of the upper cover plate of the socket box 14. When charging is required, an operator opens the front cover plate 11 of the socket box 14, presses the handle 10 to pull down the top plate 12, and then inserts the plug 1 carried along with the vehicle into the insertion hole 7 of the socket 2. The charging gun connected to the plug 1 is firmly inserted into the vehicle charging socket, and the vehicle can be charged.

[0027] In the present invention, a socket is installed in the socket box, and a plug carried along with the vehicle and adapted to the socket is provided. The front parts of the current-carrying members of the plug and the socket are both strip-shaped, and the rear parts are streamlined cone structures. The use of the matching of the special-shaped structures ensures the contact area and at the same time facilitates the plug to be smoothly inserted into the insertion hole of the socket. During the charging operation, the top plate presses the plug tightly in the insertion hole under the action of the spring, preventing the plug from disengaging from the socket and enhancing the reliability of the charging process. The present invention simplifies the structure of the charging pile, the plug is convenient for the vehicle to carry, and the manufacturing cost is low, having good prospects for popularization and application.

[0028] The above are only the preferred examples of the present invention. It should be noted that for those of ordinary skill in the art, other equivalent deformations and improvements can also be made under the technical inspiration provided by the present invention, and they should also be regarded as the protection scope of the present invention.

Claims

1. A high-current rainproof plug and socket for an electric vehicle, comprising a socket (2) installed in a socket box (14) and a plug (1) adapted to the socket (2), characterized in that: The plug (1) comprises four plug current-carrying members (4) of the same shape and arranged side by side, the plug current-carrying members (4) being mounted on a plug insulating seat (5), the plug current-carrying members (4) being a streamlined cone structure, the front portion of which is long and the height of the rear portion gradually decreases; the rear portion of the plug current-carrying member (4) is connected to the vehicle charging gun via an electric wire; The socket (2) comprises four socket current-carrying members (3) arranged side by side, the center of the socket current-carrying member (3) forms a plug hole (7) that matches the shape of the plug current-carrying member (4), the front end of the plug hole (7) is open, the front part of the plug hole (7) is a rectangular parallelepiped structure, and the rear part is a streamlined cone structure with a gradually lowered bottom surface; the rear part of the socket current-carrying member (3) is connected to the socket power cord through screws; the socket current-carrying member (3) is mounted on the socket insulation seat (6), and the socket insulation seat (6) is fixed on the inner wall of the upper cover plate of the socket box (14); The lengths of the socket current-carrying member (3) and the plug current-carrying member (4) are adjusted according to the magnitude of the charging current; A top plate (12) is installed in the inner cavity of the socket box (14), and a plurality of springs (9) are installed between the top plate (12) and the bottom plate of the socket box (14).

2. A high current rainproof plug and socket for electric vehicles according to claim 1, characterized in that: The socket box (14) is a rectangular parallelepiped box body with an open front side wall, and the top of the front cover plate (11) is hinged to the front side wall of the upper cover plate of the socket box (14).

3. A high current rainproof plug and socket for electric vehicles according to claim 1, characterized in that: The bottom of the socket box (14) is provided with a power line hole, the lower end of the power line hole is connected to the hollow column (13), and the bottom of the column (13) is fixed on the base.

4. A high current rainproof plug and socket for electric vehicles according to claim 1, characterized in that: A handle (10) is mounted on the outer side wall of the top plate (12).

5. A high current rainproof plug and socket for electric vehicles according to claim 1, characterized in that: There are at least two springs (9) which are symmetrically installed between the top plate (12) and the socket box (14).

6. A high current rainproof plug and socket for electric vehicles according to claim 1, characterized in that: A water retaining edge is installed on the top of the front side wall of the socket box (14).

7. A high current rainproof plug and socket for electric vehicles according to claim 1, characterized in that: A wire entry groove is provided on the front side wall of the lower bottom plate of the socket box (14) at a position close to the wire passing hole.

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