Electric connector for direct current charging and discharging equipment

Abstract

The utility model relates to the technical field of connectors, and provides an electric connector for direct-current charging and discharging equipment, which comprises a male head comprising a first insulating shell and a male head main terminal arranged on the first insulating shell, and one end of the male head main terminal forms a connecting plug; the female head comprises a second insulating shell and a female head main terminal arranged on the second insulating shell, a plugging port is formed in one end of the female head main terminal, and a crown spring is installed in the plugging port; when the male head is connected with the female head, the head part of the first insulating shell and the head part of the second insulating shell are mutually plugged, the plugging head of the male head main terminal is plugged into the inner ring of the crown spring in the plugging port of the female head main terminal, and the plugging head and the crown spring form a whole circle contact. According to the electric connector for the direct current charging and discharging equipment, the service life is prolonged, and the reliability of electric connection is improved.

Description

Technical Field

[0001] The present application relates to the technical field of connectors, and more specifically, to an electrical connector for direct current charging and discharging equipment. Background Art

[0002] In the connectors of DC charging and discharging equipment in the prior art, the electrical connection between the male and female connectors is achieved by inserting the male terminal into the flat-end female terminal. After the male and female terminals are plugged in and out of each other many times, the plugging and unplugging force between the male and female terminals cannot be controlled. The rigid collision with uncontrollable force caused by the plugging of the male and female terminals can easily scratch the inner silver plating (or copper plating) of the male and female terminals, thereby causing current connection problems when the connector is used for charging, resulting in a short service life of the connector and low reliability of the electrical connection. Utility Model Content

[0003] In view of this, the present application provides an electrical connector for a DC charging and discharging device to solve the technical problem of poor electrical connection reliability of the connector of the DC charging and discharging device in the prior art.

[0004] The present application provides an electrical connector for a DC charging and discharging device, wherein the electrical connector for a DC charging and discharging device comprises:

[0005] A male connector, comprising a first insulating shell and a male main terminal disposed in the first insulating shell, wherein one end of the male main terminal forms a plug connector;

[0006] A female connector includes a second insulating shell and a female main terminal disposed in the second insulating shell, one end of the female main terminal forming an insertion interface, and a crown spring installed in the insertion interface;

[0007] When the male connector is connected to the female connector, the head portion of the first insulating shell and the head portion of the second insulating shell are plugged into each other, the plug connector of the male main terminal is inserted into the inner circle of the crown spring in the plug interface of the female main terminal, and the plug connector forms a full circle of contact with the crown spring.

[0008] Furthermore, the crown spring comprises a first large head section, a middle tapered section, and a second large head section from one axial end to the other. The diameter of the crown spring gradually decreases from the first large head section to the middle tapered section along the axial direction of the crown spring, and then gradually expands from the middle tapered section to the second large head section. When the male connector and the female connector are connected, the plug connector forms a full-circle contact with the middle tapered section of the crown spring.

[0009] Furthermore, the crown spring is clamped to the inner wall of the plug interface of the female main terminal.

[0010] Furthermore, the inner wall of the plug-in interface of the female main terminal forms a first convex ring platform and a second convex ring platform spaced apart in the axial direction of the female main terminal, one axial end of the crown spring abuts against the first convex ring platform, and the other axial end of the crown spring abuts against the second convex ring platform.

[0011] Furthermore, the male connector includes two male connector main terminals that are spaced apart and arranged in parallel with each other, and the female connector includes two female connector main terminals that are spaced apart and arranged in parallel with each other.

[0012] Furthermore, the plug connector is a cylindrical head.

[0013] Furthermore, the male connector includes a first handle detachably connected to the tail of the first insulating shell, and the female connector includes a second handle detachably connected to the tail of the second insulating shell.

[0014] Furthermore, the first insulating shell includes a first upper half shell and a first lower half shell that are detachably connected to each other, a first hole seat is provided on both sides of the first upper half shell, a second hole seat is provided on both sides of the first lower half shell, a first mounting through hole is provided on the first hole seat, a second mounting through hole aligned with the first mounting through hole is provided on the second hole seat, and first two ends of the first handle are respectively provided with a first plug column inserted into the first mounting through hole, a first threaded blind hole is formed at the end of the first plug column, and the first lower half shell, the first upper half shell and the first handle are threadedly connected to the first threaded blind hole by a screw that passes through the second mounting through hole and the first mounting through hole in sequence. Connection; the second insulating shell includes a second upper half shell and a second lower half shell that are detachably connected to each other, a third hole seat is provided on both sides of the second upper half shell, and a fourth hole seat is provided on both sides of the second lower half shell, a third mounting through hole is provided on the third hole seat, and a fourth mounting through hole aligned with the third mounting through hole is provided on the fourth hole seat, and second plug posts inserted into the third mounting through holes are respectively provided at both ends of the second handle, and a second threaded blind hole is formed at the end of the second plug post, and the second lower half shell, the second upper half shell and the second handle are connected in sequence by screws that pass through the fourth mounting through hole and the third mounting through hole in sequence and are threadedly connected to the second threaded blind hole.

[0015] Further, a fifth hole seat is provided on both sides of the first upper half shell, and a sixth hole seat is provided on both sides of the first lower half shell, a fifth mounting through hole is provided on the fifth hole seat, and a sixth mounting through hole is provided on the sixth hole seat aligned with the fifth mounting through hole, and first through holes aligned with the fifth mounting through hole are respectively provided at both ends of the first handle, and the first lower half shell, the first upper half shell and the first handle are also connected in sequence by bolts passing through the first through hole, the fifth mounting through hole and the sixth mounting through hole in sequence; a seventh hole seat is also provided on both sides of the second upper half shell, and an eighth hole seat is provided on both sides of the second lower half shell, a seventh mounting through hole is provided on the seventh hole seat, and an eighth mounting through hole aligned with the seventh mounting through hole is provided on the eighth hole seat, and second through holes aligned with the seventh mounting through hole are respectively provided at both ends of the second handle, and the first lower half shell, the first upper half shell and the first handle are also connected in sequence by bolts passing through the second through hole, the seventh mounting through hole and the eighth mounting through hole in sequence.

[0016] Furthermore, a first extension sleeve is formed on the head of the first insulating shell, and a second extension sleeve is formed on the head of the second insulating shell. When the male connector is connected to the female connector, the outer side of the second extension sleeve contacts and cooperates with the inner side of the first extension sleeve.

[0017] Compared with the prior art, in the electrical connector for DC charging and discharging equipment provided by the present application, when the male and female connectors are connected, the plugging (electrical connection) of the male main terminal and the female main terminal is achieved by inserting the plug connector of the male main terminal into the crown spring in the plug interface of the female main terminal. Due to the elastic effect of the crown spring, the plugging force of the male main terminal and the female main terminal is buffered, avoiding the phenomenon of scratching of the inner silver plating layer (or copper plating layer) of the male terminal and the female terminal which is easily caused by the rigid collision between the traditional male terminal and the female terminal, thereby improving the service life of the electrical connector and the reliability of the electrical connection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0019] Figure 1 A cross-sectional view of an electrical connector for a DC charging and discharging device according to an embodiment of the present application;

[0020] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0021] Figure 3 A perspective view of a crown spring in an electrical connector for a DC charging and discharging device according to an embodiment of the present application;

[0022] Figure 4 A three-dimensional diagram of an electrical connector for a DC charging and discharging device according to an embodiment of the present application;

[0023] Figure 5 A perspective view of a male connector in an electrical connector for a DC charging and discharging device according to an embodiment of the present application;

[0024] Figure 6 A perspective view of a female connector in an electrical connector for a DC charging and discharging device according to an embodiment of the present application;

[0025] Figure 7 This is a component diagram of a male connector of an electrical connector for a DC charging and discharging device according to an embodiment of the present application, omitting the first insulating shell;

[0026] Figure 8 This is a component diagram of a female connector of an electrical connector for a DC charging and discharging device according to an embodiment of the present application, omitting the second insulating shell;

[0027] Figure 9 This is a perspective view of an electrical connector for a DC charging and discharging device according to an embodiment of the present application, omitting the first handle and the second handle;

[0028] Figure 10 This is a three-dimensional view of an electrical connector for a DC charging and discharging device according to an embodiment of the present application, omitting the first handle and the second handle from another perspective. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present application, a more comprehensive description of the present application will be provided below with reference to the accompanying drawings. The accompanying drawings provide exemplary embodiments of the present application to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that the present application can be implemented in a variety of different forms and is not limited to the embodiments described below.

[0030] The same or similar numbers in the drawings of this application correspond to the same or similar parts; in the description of this application, it should be understood that if there are terms such as "up", "down", "left", "right", etc. indicating directions or positional relationships, they are based on the directions or positional relationships shown in the drawings. This is only for the convenience of describing this application and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this application. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present application, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, scheme B, or schemes in which A and B are satisfied at the same time.

[0032] In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the fact that ordinary technicians in this field can implement them. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by this application.

[0033] See also Figures 1 to 6 The present invention provides an electrical connector for DC charging and discharging equipment. The DC charging and discharging equipment mentioned in this application includes but is not limited to mechanical facilities in high-current DC application scenarios such as electric forklifts, AGV vehicles, and electric loaders. The electrical connector for DC charging and discharging equipment includes:

[0034] The male connector 100 includes a first insulating shell 101 and a male main terminal 102 disposed in (inserted or fixed to) the first insulating shell 101 , with one end of the male main terminal 102 forming a plug connector 103 ;

[0035] The female connector 200 includes a second insulating shell 201 and a female main terminal 202 disposed in (inserted or fixed to) the second insulating shell 201. One end of the female main terminal 202 forms an insertion interface, and a crown spring 300 is installed in the insertion interface.

[0036] When the male connector 100 is connected to the female connector 200, the head of the first insulating shell 101 and the head of the second insulating shell 201 are plugged into each other, and the plug connector 103 of the male main terminal 102 is inserted into the inner circle of the crown spring 300 in the plug interface of the female main terminal 202, and the plug connector 103 forms a full circle of contact with the crown spring 300.

[0037] Since in the electrical connector for DC charging and discharging equipment provided by the present application, when the male connector 100 is connected to the female connector 200, the plugging (electrical connection) of the male main terminal 102 and the female main terminal 202 is achieved by inserting the plug connector 103 of the male main terminal 102 into the crown spring 300 in the plug interface of the female main terminal 202. Due to the elastic effect of the crown spring 300, the plugging force of the male main terminal 102 and the female main terminal 202 is buffered, avoiding the occurrence of scratches on the inner silver plating layer (or copper plating layer) of the male terminal 100 and the female terminal 200 that is easily caused by the rigid collision between the traditional male terminal 100 and the female terminal 200, thereby improving the service life of the electrical connector and the reliability of the electrical connection.

[0038] According to a specific embodiment of the present application, the crown spring 300 comprises a first large head section 301, a middle tapered section 302, and a second large head section 303 from one axial end to the other. The diameter of the crown spring 300 gradually decreases along the axial direction from the first large head section 301 to the middle tapered section 302, and then gradually increases from the middle tapered section 302 to the second large head section 303. When the male connector 100 is connected to the female connector 200, the plug connector 103 forms a full circumferential contact with the middle tapered section 302 of the crown spring 300. The crown spring 300 is snap-fitted to the inner wall of the plug interface of the female main terminal 202. The inner wall of the plug interface of the female main terminal 202 forms a first convex ring platform 203 and a second convex ring platform 204 spaced apart in the axial direction of the female main terminal 202. One axial end of the crown spring 300 abuts against the first convex ring platform 203, and the other axial end of the crown spring 300 abuts against the second convex ring platform 204, or there is a certain axial gap between one axial end of the crown spring 300 and the first convex ring platform 203, and a certain axial gap between the other axial end of the crown spring 300 and the second convex ring platform 204. In this way, when the plug connector 103 is inserted into the crown spring 300 in the plug interface of the female main terminal 202, a certain degree of axial movement of the crown spring 300 can also buffer the plugging force.

[0039] In addition, the male connector 100 includes two male main terminals 102 arranged parallel to each other and spaced apart from each other, and the female connector 200 includes two female main terminals 202 arranged parallel to each other and spaced apart from each other.

[0040] See also Figure 7 and Figure 8In addition, the electrical connector for DC charging and discharging equipment provided by the present application may also include, in addition to the male main terminal 102 and the female main terminal 202, a male auxiliary terminal 104 and a male voltage coding pin 105 that are inserted or fixed to the first insulating shell 101, and a female auxiliary terminal 205 and a female voltage coding pin 206 that are inserted or fixed to the second insulating shell 201. When the male connector 100 is connected to the female connector 200, the male auxiliary terminal 104 and the corresponding female auxiliary terminal 205 form a plug-in contact with each other, and the male voltage coding pin 105 and the female voltage coding pin 206 are in close contact with each other. The number of the male auxiliary terminal 104 and the number of the female auxiliary terminal 205 are multiple.

[0041] According to one embodiment of the present application, the plug connector 103 is a cylindrical head, the end of which can form a certain conical surface.

[0042] According to a preferred embodiment of the present application, the male connector 100 includes a first handle 1 detachably connected to the tail of the first insulating shell 101, and the female connector 200 includes a second handle 2 detachably connected to the tail of the second insulating shell 201. The detachable connection not only facilitates the replacement of the first handle 1 and the second handle 2, but also facilitates the provision of a handle to only one of the male connector 100 or the female connector 200, thereby facilitating quick distinction between the male connector 100 and the female connector 200.

[0043] See also Figures 4 to 10According to one embodiment of the present application, the first insulating shell 101 includes a first upper half shell 3 and a first lower half shell 4 that are detachably connected to each other, a first hole seat 31 is provided on both sides of the first upper half shell 3, and a second hole seat 41 is provided on both sides of the first lower half shell 4, a first mounting through hole 32 is provided on the first hole seat 31, and a second mounting through hole 42 aligned with the first mounting through hole 32 is provided on the second hole seat 41, and a first plug post 11 is provided at both ends of the first handle 1 and inserted into the first mounting through hole 32, and a first threaded blind hole is formed at the end of the first plug post 11, and the first lower half shell 4, the first upper half shell 3 and the first handle 1 are connected in sequence by a screw (not shown) that passes through the second mounting through hole 42 and the first mounting through hole 32 in sequence and is threadedly connected to the first threaded blind hole, and can then be locked with a hexagonal nut (not shown), and a hexagonal nut can also be provided in the port of the second mounting through hole 42 away from the first mounting through hole 32. Nut limiting hole; the second insulating shell 201 includes a second upper half shell 5 and a second lower half shell 6 that are detachably connected to each other, and a third hole seat 51 is provided on both sides of the second upper half shell 5, and a fourth hole seat 61 is provided on both sides of the second lower half shell 6, and a third mounting through hole 52 is provided on the third hole seat 51, and a fourth mounting through hole 62 aligned with the third mounting through hole 52 is provided on the fourth hole seat 61. The two ends of the second handle 2 are respectively provided with a second plug 21 inserted into the third mounting through hole 52, and a second threaded blind hole is formed at the end of the second plug 21. The second lower half shell 6, the second upper half shell 5 and the second handle 2 are connected in sequence by a screw (not shown) that passes through the fourth mounting through hole 62 and the third mounting through hole 52 in sequence and is threadedly connected to the second threaded blind hole, and can be locked with a hexagonal nut (not shown). A hexagonal nut limiting hole can also be provided in the port of the fourth mounting through hole 62 away from the third mounting through hole 52.

[0044] Furthermore, fifth hole seats 33 are provided on both sides of the first upper half shell 3, the first upper half shell 3, the first hole seat 31 and the fifth hole seat 33 are integrally formed plastic parts, and sixth hole seats 43 are provided on both sides of the first lower half shell 4, the first lower half shell 4, the second hole seat 41 and the sixth hole seat 43 are integrally formed plastic parts, the second upper half shell 5 and the second lower half shell 6 and the corresponding hole seats can also be integrally formed plastic parts, the fifth hole seat 33 is provided with a fifth mounting through hole 34, the sixth hole seat 43 is provided with a sixth mounting through hole 44 aligned with the fifth mounting through hole 34, and the two ends of the first handle 1 are respectively provided with first through holes 12 aligned with the fifth mounting through holes 34, and the first lower half shell 4, the first upper half shell 3 and the first handle 1 are further connected in sequence by bolts (not shown) that pass through the first through hole 12, the fifth mounting through hole 34 and the sixth mounting through hole 44 in sequence. The end of the first through hole 12 can be provided with a ring platform for the bolt head of the axially limiting bolt, and the other end of the bolt (not shown) can be locked by a hexagonal nut; the second upper half shell 5 is also provided with a seventh hole seat 53 on both sides, and the second lower half shell 6 is also provided with an eighth hole seat 63 on both sides, the seventh hole seat 53 is provided with a seventh mounting through hole 54, and the eighth hole seat 63 is provided with an eighth mounting through hole 64 aligned with the seventh mounting through hole 54. The two ends of the second handle 2 are also provided with second through holes 22 aligned with the seventh mounting through hole 54, respectively. The first lower half shell 4, the first upper half shell 3 and the first handle 1 are also connected in sequence by bolts passing through the second through hole 22, the seventh mounting through hole 54 and the eighth mounting through hole 64 in sequence. The end of the first through hole 12 can be provided with a ring platform for the bolt head of the axially limiting bolt (not shown), and the other end of the bolt (not shown) can be locked by a hexagonal nut.

[0045] According to a specific embodiment of the present application, a first extension sleeve 106 is formed at the head of the first insulating shell 101, and a second extension sleeve 207 is formed at the head of the second insulating shell 201. When the male connector 100 is connected to the female connector 200, the second extension sleeve 207 is inserted into the first extension sleeve 106, and the outer side of the second extension sleeve 207 contacts and cooperates with the inner side of the first extension sleeve 106.

[0046] It should be noted that the above embodiments merely represent preferred implementations of the present application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the present application. It should be noted that those skilled in the art may, without departing from the spirit of the present application, make various modifications and improvements, such as combining different features from the various embodiments, and all of these modifications and improvements should fall within the scope of protection of the present application.

Claims

1. An electrical connector for DC charging and discharging equipment, characterized in that: The electrical connector for DC charging and discharging equipment includes: A male connector, comprising a first insulating shell and a male main terminal disposed in the first insulating shell, wherein one end of the male main terminal forms a plug connector; A female connector includes a second insulating shell and a female main terminal disposed in the second insulating shell, one end of the female main terminal forming an insertion interface, and a crown spring installed in the insertion interface; When the male connector is connected to the female connector, the head portion of the first insulating shell and the head portion of the second insulating shell are plugged into each other, the plug connector of the male main terminal is inserted into the inner circle of the crown spring in the plug interface of the female main terminal, and the plug connector forms a full circle of contact with the crown spring.

2. The electrical connector for DC charging and discharging equipment according to claim 1, characterized in that: The crown spring comprises a first large head section, a middle tapered section, and a second large head section from one axial end to the other. The diameter of the crown spring gradually decreases from the first large head section to the middle tapered section along the axial direction of the crown spring, and then gradually expands from the middle tapered section to the second large head section. When the male connector and the female connector are connected, the plug connector forms a full-circle contact with the middle tapered section of the crown spring.

3. The electrical connector for DC charging and discharging equipment according to claim 2, characterized in that: The crown spring is clamped to the inner wall of the plug interface of the female main terminal.

4. The electrical connector for DC charging and discharging equipment according to claim 3, characterized in that: The inner wall of the plug-in interface of the female main terminal forms a first convex ring platform and a second convex ring platform spaced apart in the axial direction of the female main terminal, one axial end of the crown spring abuts against the first convex ring platform, and the other axial end of the crown spring abuts against the second convex ring platform.

5. The electrical connector for DC charging and discharging equipment according to any one of claims 1 to 4, characterized in that: The male connector includes two male connector main terminals that are spaced apart and arranged in parallel with each other, and the female connector includes two female connector main terminals that are spaced apart and arranged in parallel with each other.

6. The electrical connector for DC charging and discharging equipment according to any one of claims 1 to 4, characterized in that: The plug connector is a cylindrical head.

7. The electrical connector for DC charging and discharging equipment according to any one of claims 1 to 4, characterized in that: The male connector includes a first handle detachably connected to the tail of the first insulating shell, and the female connector includes a second handle detachably connected to the tail of the second insulating shell.

8. The electrical connector for DC charging and discharging equipment according to claim 7, characterized in that: The first insulating shell includes a first upper half shell and a first lower half shell that are detachably connected to each other, first hole seats are provided on both sides of the first upper half shell, second hole seats are provided on both sides of the first lower half shell, a first mounting through hole is provided on the first hole seat, and a second mounting through hole aligned with the first mounting through hole is provided on the second hole seat, first plug posts are respectively provided at both ends of the first handle to be inserted into the first mounting through hole, a first threaded blind hole is formed at the end of the first plug post, and the first lower half shell, the first upper half shell and the first handle are sequentially connected by screws that sequentially pass through the second mounting through hole and the first mounting through hole and are threadedly connected to the first threaded blind hole; The second insulating shell includes a second upper half shell and a second lower half shell that are detachably connected to each other, a third hole seat is provided on both sides of the second upper half shell, and a fourth hole seat is provided on both sides of the second lower half shell, a third mounting through hole is provided on the third hole seat, and a fourth mounting through hole aligned with the third mounting through hole is provided on the fourth hole seat, and second plug posts inserted into the third mounting through holes are respectively provided at both ends of the second handle, and a second threaded blind hole is formed at the end of the second plug post, and the second lower half shell, the second upper half shell and the second handle are connected in sequence by screws that pass through the fourth mounting through hole and the third mounting through hole in sequence and are threadedly connected to the second threaded blind hole.

9. The electrical connector for DC charging and discharging equipment according to claim 8, characterized in that: A fifth hole seat is further provided on both sides of the first upper half shell, and a sixth hole seat is further provided on both sides of the first lower half shell, a fifth mounting through hole is provided on the fifth hole seat, and a sixth mounting through hole is provided on the sixth hole seat aligned with the fifth mounting through hole, and first through holes aligned with the fifth mounting through hole are respectively provided at both ends of the first handle, and the first lower half shell, the first upper half shell and the first handle are also connected in sequence by bolts passing through the first through hole, the fifth mounting through hole and the sixth mounting through hole in sequence; a seventh hole seat is further provided on both sides of the second upper half shell, and an eighth hole seat is further provided on both sides of the second lower half shell, a seventh mounting through hole is provided on the seventh hole seat, and an eighth mounting through hole is provided on the eighth hole seat aligned with the seventh mounting through hole, and second through holes aligned with the seventh mounting through hole are respectively provided at both ends of the second handle, and the first lower half shell, the first upper half shell and the first handle are also connected in sequence by bolts passing through the second through hole, the seventh mounting through hole and the eighth mounting through hole in sequence.

10. The electrical connector for DC charging and discharging equipment according to claim 9, characterized in that: The head of the first insulating shell is formed with a first extension sleeve, and the head of the second insulating shell is formed with a second extension sleeve. When the male connector is connected to the female connector, the outer side of the second extension sleeve contacts and cooperates with the inner side of the first extension sleeve.

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