A direct current power terminal for a vehicle socket

Abstract

The utility model relates to a kind of vehicle-mounted socket direct current power terminal, comprising: terminal female head, as terminal port is used to connect the male terminal of the charging gun on charging pile;Terminal adapter copper bar is connected with the vehicle-mounted charging wire of charging pile;Screw assembly is used to connect terminal female head and terminal adapter copper bar as a whole, and terminal adapter copper bar is locked on the end of terminal female head end by screw assembly;Wherein, screw assembly includes hexagon socket screw, sealing ring and press-in nut, sealing ring is sleeved on the outer wall of hexagon socket screw, and the outer ring of sealing ring is in contact with terminal female head to realize sealing.The utility model discloses the vehicle-mounted socket direct current power terminal, welding process direct current terminal structure is divided into two, under the condition that overall size does not change, direct current power terminal front side gun end is processed using copper bar material, and rear side welding end uses the L-shaped cast angle copper material of lower cost to carry out micro-processing process even only needs blanking manufacturing, so that welding process terminal has cost advantage simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of terminal technology, and in particular to a DC power terminal for a vehicle socket. Background Technology

[0002] The development of new energy technologies has given people more options for energy use. With the penetration rate of electric vehicles increasing year by year, how to charge electric vehicles efficiently has become a hot topic.

[0003] When an electric vehicle is being charged, the power plug is connected to a household power source, and the vehicle plug is connected to the vehicle socket on the charging equipment. Therefore, the current from the power source will sequentially pass through the power plug, the on-line control box, the cable, the vehicle plug, and the vehicle socket into the car's charging equipment.

[0004] Currently, in the electric vehicle market, the DC power terminal of the on-board charger and the charging cable are connected in two ways: welding and crimping. The advantage of crimped terminals is that they require less material, have a shorter manufacturing process time, and are relatively cheaper. The advantage of welded terminals is that under the same current charging and environmental conditions, the temperature change is more stable and the charging efficiency is higher.

[0005] For DC power terminals connected to charging cables using a welding process, although the welding process is more efficient than the crimping process when powered on, the welding process generally consumes more materials (copper rods) and has a higher manufacturing cost. Utility Model Content

[0006] Therefore, the technical problem to be solved by this utility model is to overcome the problem in the prior art of how to reduce the production cost of DC power terminals and improve product competitiveness while ensuring charging efficiency.

[0007] To solve the above-mentioned technical problems, this utility model provides a vehicle socket DC power terminal, including: a female terminal head, which serves as a terminal port for connecting to the male terminal of the charging gun on the charging pile; a terminal adapter copper busbar, which connects to the vehicle charging cable of the charging pile; and a screw assembly, which connects the female terminal head and the terminal adapter copper busbar into one unit, and the terminal adapter copper busbar is locked to one end of the female terminal head by the screw assembly; wherein, the screw assembly includes an internal hexagonal screw, a sealing ring, and a press-fit nut, the press-fit nut is disposed on the terminal adapter copper busbar, the threaded portion of the internal hexagonal screw passes through the female terminal head and is threadedly connected to the press-fit nut, the sealing ring is sleeved on the outer wall of the internal hexagonal screw, and the outer ring of the sealing ring contacts the female terminal head to achieve a seal.

[0008] In one embodiment of this utility model, a connecting rod is provided between the head of the hexagon socket screw and the threaded portion of the hexagon socket screw. The connecting rod is cylindrical and is coaxial with the threaded portion of the hexagon socket screw.

[0009] In one embodiment of this utility model, a ring groove is provided on the outer circumference of the connecting rod portion, and the sealing ring is disposed in the ring groove.

[0010] In one embodiment of this utility model, the terminal female head is connected to a terminal adapter copper busbar at one end and has a first through hole. The first through hole is a round hole. The connecting rod is disposed in the first through hole, and the sealing ring is disposed between the first through hole and the connecting rod to achieve sealing.

[0011] In one embodiment of this utility model, the terminal female head is cylindrical, and a circular groove is provided at the center of the terminal female head. The circular groove communicates with the first through hole, and the head of the internal hexagon screw is disposed in the circular groove.

[0012] In one embodiment of this utility model, a spring washer and a flat washer are provided between the head of the hex socket screw and the bottom surface of the circular groove. The spring washer and the flat washer are used to prevent the hex socket screw and the terminal head from loosening.

[0013] In one embodiment of this utility model, a contact spring is installed at the end of the female terminal head away from the terminal adapter copper busbar. The contact spring is located at the end of the circular groove away from the first through hole. The contact spring is used to connect to the male terminal of the charging gun on the charging pile.

[0014] In one embodiment of this utility model, the contact spring is composed of a plurality of springs arranged in a circular array. The springs are arched and the arch protrudes axially toward the center of the female terminal. The plurality of springs arranged in a circular array form a socket for the male terminal in the middle.

[0015] In one embodiment of this utility model, the terminal adapter copper busbar is "L" shaped.

[0016] In one embodiment of this utility model, a second through hole is provided on the right-angled side of the terminal adapter copper busbar that contacts the terminal female head, and the press-fit nut is disposed in the second through hole.

[0017] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial effects:

[0018] The DC power terminal for the vehicle socket described in this utility model divides the DC terminal structure of the welding process into two parts. Without changing the overall size, the front insertion gun end of the DC power terminal is made of copper rod material, while the rear welding end is made of L-shaped cast angle copper material with lower cost. The micro-processing process is carried out, or even only material cutting is required for manufacturing. The power terminal of the welding process connecting the charging cable can achieve higher charging efficiency during DC charging. At the same time, through its own structural design optimization, the welding process terminal also has a cost advantage. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0020] Figure 1 This is an assembly diagram of the DC power terminals of the vehicle socket in a preferred embodiment of the present invention;

[0021] Figure 2 This is an exploded view of the DC power terminal of the vehicle socket in a preferred embodiment of the present invention;

[0022] Figure 3 This is a left view of the DC power terminal of the vehicle socket in a preferred embodiment of the present invention;

[0023] Figure 4 This is a preferred embodiment of the present invention. Figure 3 Cross-sectional view of section AA;

[0024] Figure 5 This is an exploded view of the screw assembly in a preferred embodiment of the present invention;

[0025] Figure 6 This is a cross-sectional view of the screw assembly in a preferred embodiment of the present invention;

[0026] Figure 7 This is a cross-sectional view of the terminal adapter copper busbar in a preferred embodiment of the present invention.

[0027] Explanation of reference numerals in the accompanying drawings: Terminal female head 1, First through hole 11, Circular groove 12, Contact spring 13, Terminal adapter copper busbar 2, Second through hole 21, Screw assembly 3, Hex socket screw 31, Sealing ring 32, Press-fit nut 33, Connecting rod part 34, Annular groove 341, Spring washer 35, Flat washer 36. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0029] Reference Figure 1-4 As shown, the DC power terminal of this utility model for a vehicle socket includes three parts: a female terminal 1, a terminal adapter copper busbar 2, and a screw assembly 3. The female terminal 1 serves as a terminal port for connecting to the male terminal of the charging gun on the charging pile. The terminal adapter copper busbar 2 connects to the vehicle charging cable of the charging pile. The screw assembly 3 connects the female terminal 1 and the terminal adapter copper busbar 2 as a single unit, and the terminal adapter copper busbar 2 is locked to one end of the female terminal 1 by the screw assembly 3. Through cost structure optimization, the structure is divided into two parts: the female terminal 1 and the terminal adapter copper busbar 2. The terminal adapter copper busbar 2 is welded to the vehicle charging cable, and the terminal adapter copper busbar 2 uses L-shaped cast angle copper to reduce costs.

[0030] Reference Figure 5 , 6 As shown, the screw assembly 3 includes a hexagon socket screw 31, a sealing ring 32, and a press-fit nut 33. The press-fit nut 33 is mounted on the terminal adapter copper busbar 2. The threaded portion of the hexagon socket screw 31 passes through the terminal female head 1 and is threadedly connected to the press-fit nut 33. The sealing ring 32 is fitted onto the outer wall of the hexagon socket screw 31, and the outer ring of the sealing ring 32 contacts the terminal female head 1 to achieve a seal. The sealing method in the above structure is that after the terminal is split into two, it needs to be fixed together with bolts to become a single unit again. Therefore, a sealing ring is added at the bolt position to ensure a seal.

[0031] In the above structure, a connecting rod portion 34 is provided between the head and the threaded portion of the hexagon socket screw 31. The connecting rod portion 34 is cylindrical and is coaxially arranged with the threaded portion of the hexagon socket screw 31. An annular groove 341 is provided on the outer circumference of the connecting rod portion 34. The sealing ring 32 is an O-ring, so the sealing ring 32 is just placed inside the annular groove 341.

[0032] The terminal female head 1 is configured to be fitted with a sealing ring 32. The terminal female head 1 is connected to the terminal adapter copper bus 2 and has a first through hole 11. The first through hole 11 is a round hole. The connecting rod part 34 is disposed in the first through hole 11. The sealing ring 32 is disposed between the first through hole 11 and the connecting rod part 34 to achieve sealing.

[0033] In the above structure, the terminal female head 1 is cylindrical, and a circular groove 12 is provided at the center of the terminal female head 1. The circular groove 12 is connected to the first through hole 11, and the head of the internal hexagon screw 31 is disposed in the circular groove 12.

[0034] In the above structure, a spring washer 35 and a flat washer 36 are provided between the head of the internal hex screw 31 and the bottom surface of the circular groove 12. The spring washer 35 and the flat washer 36 are fitted on the internal hex screw 31. The spring washer 35 and the flat washer 36 are used to prevent the internal hex screw 31 and the terminal female head 1 from loosening.

[0035] Reference Figure 4 As shown, a contact spring 13 is installed at the end of the female terminal 1 away from the terminal adapter copper busbar 2. The contact spring 13 is located at the end of the circular groove 12 away from the first through hole 11. The contact spring 13 is used to insert into the male terminal of the charging gun on the charging pile. The contact spring 13 is composed of several spring pieces arranged in a circular array. The spring pieces are arched, and the arch of the spring pieces protrudes towards the central axial direction of the female terminal 1. The insertion hole of the male terminal is formed in the middle of the several spring pieces arranged in a circular array.

[0036] Reference Figure 7 As shown, the terminal adapter copper busbar 2 is L-shaped, and one vertical surface of the terminal adapter copper busbar 2 is attached to the end face of one end of the terminal female head 1. The terminal adapter copper busbar 2 and the terminal female head 1 are locked together by a screw assembly. A second through hole 21 is provided on the right-angle side of the terminal adapter copper busbar 2 that contacts the terminal female head 1, and the press-fit nut 33 is disposed in the second through hole 21.

[0037] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A DC power terminal for a vehicle-mounted socket, characterized in that, include: The female terminal is used as a terminal port to connect to the male terminal of the charging gun on the charging pile. The terminal adapter copper busbar connects to the vehicle charging cable of the charging pile; The screw assembly is used to connect the terminal female and the terminal adapter copper bus to one end, and the terminal adapter copper bus is locked to the end of the terminal female by the screw assembly; The screw assembly includes an internal hexagon screw, a sealing ring, and a press-fit nut. The press-fit nut is mounted on the terminal adapter copper busbar. The threaded portion of the internal hexagon screw passes through the terminal female head and is threadedly connected to the press-fit nut. The sealing ring is fitted on the outer wall of the internal hexagon screw, and the outer ring of the sealing ring contacts the terminal female head to achieve a seal.

2. The vehicle-mounted socket DC power terminal according to claim 1, characterized in that: A connecting rod is provided between the head of the socket head cap screw and the threaded portion of the socket head cap screw. The connecting rod is cylindrical and is coaxial with the threaded portion of the socket head cap screw.

3. The vehicle socket DC power terminal according to claim 2, characterized in that: A ring groove is provided on the outer circumference of the connecting rod part, and the sealing ring is disposed in the ring groove.

4. The vehicle socket DC power terminal according to claim 3, characterized in that: The terminal female connector has a first through hole at one end connected to the terminal adapter copper busbar. The first through hole is a round hole. The connecting rod is disposed in the first through hole. The sealing ring is disposed between the first through hole and the connecting rod to achieve a seal.

5. The vehicle socket DC power terminal according to claim 4, characterized in that: The terminal female is cylindrical, and a circular groove is provided at the center of the terminal female. The circular groove communicates with the first through hole, and the head of the internal hexagon screw is located in the circular groove.

6. The vehicle-mounted socket DC power terminal according to claim 1, characterized in that: The head of the socket head cap screw is provided with a spring washer and a flat washer between the head and the bottom surface of the circular groove. The spring washer and flat washer are used to prevent the socket head cap screw and the terminal female head from loosening.

7. The vehicle socket DC power terminal according to claim 5, characterized in that: A contact spring is installed at the end of the female terminal head away from the terminal adapter copper busbar. The contact spring is located at the end of the circular groove away from the first through hole. The contact spring is used to connect to the male terminal of the charging gun on the charging pile.

8. The vehicle socket DC power terminal according to claim 7, characterized in that: The contact spring is composed of several springs arranged in a circular array. The springs are arched and protrude axially toward the center of the female terminal. The middle of the several springs arranged in a circular array forms the insertion hole of the male terminal.

9. The vehicle socket DC power terminal according to claim 1, characterized in that: The terminal adapter copper busbar is "L" shaped.

10. The vehicle-mounted socket DC power terminal according to claim 9, characterized in that: The terminal adapter copper busbar is provided with a second through hole on the right-angle side that contacts the terminal female head, and the press-fit nut is set in the second through hole.

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