CN212725860U

CN212725860U - Charging plug conductive assembly and charging terminal

Info

Publication number: CN212725860U
Application number: CN202022027253.1U
Authority: CN
Inventors: 徐威; 穆晓鹏; 张成森; 黄飞; 冯志建; 韩增雪; 刘学宝
Original assignee: Qingdao Teld New Energy Technology Co Ltd
Current assignee: Qingdao Teld New Energy Technology Co Ltd
Priority date: 2020-09-16
Filing date: 2020-09-16
Publication date: 2021-03-16
Anticipated expiration: 2030-09-16

Abstract

The utility model discloses a charging plug conductive component and charging terminal, this charging plug conductive component includes: a charging plug provided with an electrical contact element; the conductive rod comprises a first conductive segment and a second conductive segment which are connected in series, wherein the rod diameter of the first conductive segment is smaller than that of the second conductive segment; when the first conductive segment is matched with the electric contact element, the first conductive segment and the electric contact element are not contacted; when the second conductive segment is matched with the electric contact element, the second conductive segment and the electric contact element are in close contact; when the charging plug is extended, the electrical contact element slides from the first conductive segment to the second conductive segment. The charging plug conductive assembly enables the electric contact element not to be in contact with the first conductive section when moving along the first conductive section and to be in close contact with the second conductive section when moving along the second conductive section by dividing the conductive rod into two sections with different rod diameters, reduces friction force and simultaneously realizes charging, reduces abrasion of the electric contact element and the conductive rod, and the charging terminal comprises the charging plug conductive assembly and is long in service life.

Description

Charging plug conductive assembly and charging terminal

Technical Field

The utility model relates to an electric vehicle battery charging outfit technical field, more specifically say, relate to a charging plug conductive component, in addition, the utility model discloses still relate to a charging terminal including above-mentioned charging plug conductive component.

Background

For electric vehicles such as electric vehicles and hybrid electric vehicles, a charging terminal product is generally used to charge the electric vehicles, and during charging, a charging plug of the charging terminal product is plugged into a socket of the electric vehicle.

A charging terminal in the prior art generally includes a conductive rod, an insulating sliding seat, a charging plug, a linear driving device, and the like, where the conductive rod is connected to an external power supply device through a cable to transmit power to the charging plug through the conductive rod; the charging plug is arranged on the insulating sliding seat, and the insulating sliding seat plays a role in fixing and supporting the charging plug; the charging plug is contacted with the conducting rod through an electric contact element (such as a spring contact finger or a conducting elastic sheet) so as to realize the electric connection between the charging plug and the conducting rod; the insulating sliding seat is connected with the output end of the linear driving device so as to drive the insulating sliding seat and the charging plug to move together through the linear driving device, so that the charging plug is plugged with the receiving seat or is pulled out of the receiving seat.

However, since the charging plug is in contact with the conductive rod through the electrical contact element (such as a spring finger or a conductive elastic sheet), the electrical contact element of the charging plug slides along the conductive rod and is in contact with the conductive rod all the time during the movement of the charging plug, so as to achieve the electrical conduction.

It is known that such a connection method between the charging plug and the conductive rod easily causes abrasion between the electrical contact element and the conductive rod, and as the service life of the charging terminal increases, poor contact is easily caused, which affects the service life of the charging terminal.

In summary, how to alleviate the wear of the electrical contact element and the conductive rod and improve the service life of the charging terminal is a problem to be solved by those skilled in the art.

SUMMERY OF THE UTILITY MODEL

In view of this, the present invention provides a charging plug conductive assembly to reduce the wear of the electrical contact element and the conductive rod and prolong the service life of the charging terminal.

Another object of the present invention is to provide a charging terminal including the above charging plug conductive assembly, which has a longer service life.

In order to achieve the above object, the present invention provides the following technical solutions:

a charging plug conductive assembly comprising:

a charging plug provided with an electrical contact element;

a conductive rod for transmitting electrical energy, comprising a first conductive segment and a second conductive segment connected in series, the rod diameter of the first conductive segment being smaller than the rod diameter of the second conductive segment; the first conductive segment is non-contacting when mated with the electrical contact element; when the second conductive segment is matched with the electric contact element, the second conductive segment and the electric contact element are in close contact; when the charging plug is extended, the electrical contact element slides from the first conductive segment to the second conductive segment.

Preferably, the junction of the first and second conductive segments transitions smoothly.

A charging terminal, comprising:

any one of the above charging plug conductive assemblies;

the insulating sliding seat is fixedly connected with the charging plug of the charging plug conductive assembly;

and the output end of the driving device is fixedly connected with the insulating sliding seat.

Preferably, the device further comprises a guide rail for guiding the insulation sliding seat, and the insulation sliding seat is connected with the guide rail in a sliding mode.

Preferably, the driving device is a linear motor, stators of the linear motor are distributed along the length direction of the guide rail, and a rotor of the linear motor is connected with the insulating slide seat, so that when the linear motor is powered on, the insulating slide seat is driven to move, and when the linear motor is powered off, the insulating slide seat is pulled by external force to move.

Preferably, the charging plug is connected with the insulating sliding seat through a connecting arm, and an elastic assembly with deflection for adjusting the posture of the charging plug is arranged between the charging plug and the connecting arm.

Preferably, the elastic component comprises a spring and a rubber sheath sleeved on the outer periphery of the spring.

Preferably, one end of the elastic component, which faces the charging plug, is provided with a connecting flange, and the connecting flange is connected with the charging plug through a first bolt.

Preferably, a sealing shield for preventing the first bolt from being exposed is further included.

Preferably, a preset gap is formed between the connecting flange and the elastic component, the sealing shield comprises a first half ring and a second half ring, the first half ring and the second half ring are butted to form a circular ring, and the circular ring is embedded in the preset gap and circumferentially envelops each first bolt.

The utility model provides a charging plug conductive component, through two sections with the different pole footpaths of conducting rod share, make electric contact element at the in-process that removes along first conducting segment, not with the contact of first conducting segment, and at the in-process that removes along the second conducting segment, make electric contact element and second conducting segment in close contact with, consequently, compare in prior art electric contact element at the in-process that charging plug removed all the time with the conducting rod contact, the utility model provides a charging plug conductive component has guaranteed electric power transmission's stability when reducing frictional force, can reduce the wearing and tearing of electric contact element and conducting rod, improves charging plug conductive component's life and charging plug and stretches out the security of in-process.

The utility model provides a charging terminal because its charging plug and conducting rod's wearing and tearing are little, consequently, this charging terminal's long service life.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a charging terminal according to an embodiment of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a front view (in partial cross-section) of the electrical contact element of FIG. 1 mated with a first conductive segment;

FIG. 4 is an enlarged view of a portion of FIG. 3;

FIG. 5 is a front view (in partial cross-section) of the electrical contact element of FIG. 1 mated with a second conductive segment;

FIG. 6 is a partial enlarged view of B in FIG. 5;

fig. 7 is a schematic structural diagram of an elastic component of a charging terminal according to an embodiment of the present invention;

fig. 8 is a schematic structural diagram of a sealing cover of a charging terminal according to an embodiment of the present invention;

fig. 9 is a sectional view of the assembled elastic assembly shown in fig. 7, the sealing cover shown in fig. 8 and the charging plug of the charging terminal according to the embodiment of the present invention.

The reference numerals in fig. 1 to 9 are as follows:

the charging plug comprises a charging plug 1, an electric contact element 11, a conductive rod 2, a first conductive segment 21, a second conductive segment 22, an insulating slide base 3, a driving device 4, a guide rail 5, an elastic component 6, a spring 61, a rubber sheath 62, a connecting flange 63, a first bolt 7, a sealing shield 8, a first half ring 81, a second half ring 82 and a mounting hole 83.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

The core of the utility model is to provide a charging plug conductive component to slow down the wearing and tearing of electrical contact element and conducting rod, improve charging terminal's life. The utility model discloses a another core provides a charging terminal including above-mentioned charging plug conductive component, and its life is than longer.

Referring to fig. 1 to 9, fig. 1 is a schematic structural diagram of a charging terminal according to an embodiment of the present invention; FIG. 2 is a front view of FIG. 1; FIG. 3 is a front view (in partial cross-section) of the electrical contact element of FIG. 1 mated with a first conductive segment; FIG. 4 is an enlarged view of a portion of FIG. 3; FIG. 5 is a front view (in partial cross-section) of the electrical contact element of FIG. 1 mated with a second conductive segment; FIG. 6 is a partial enlarged view of B in FIG. 5; FIG. 7 is a schematic structural view of the elastic member; FIG. 8 is a schematic view of the construction of the seal housing; fig. 9 is a cross-sectional view of the elastomeric assembly, the sealing boot, and the charging plug after assembly.

The utility model provides a charging plug conductive component mainly includes charging plug 1 and conducting rod 2, and conducting rod 2 is used for linking to each other with external power supply equipment to transmit the electric energy, charging plug 1 is equipped with the electric contact element 11 that is used for with the contact of conducting rod 2, and in order to provide the electric energy for charging plug 1 through conducting rod 2.

In particular, the conductive rod 2 comprises a first conductive segment 21 and a second conductive segment 22, which are connected in series, wherein the rod diameter of the first conductive segment 21 is smaller than the rod diameter of the second conductive segment 22.

When the first conductive segment 21 is mated with the electrical contact element 11, the first conductive segment 21 is not in contact with the electrical contact element 11; when the second conductive segment 22 is mated with the electrical contact element 11, the second conductive segment 22 is in intimate contact with the electrical contact element 11; and, when the charging plug 1 is extended, the electrical contact element 11 slides from the first conductive segment 21 to the second conductive segment 22.

That is, when the electric vehicle needs to be charged, the charging plug 1 needs to be extended, and in the process of extending the charging plug 1, the electrical contact element 11 extends along with the extension of the charging plug 1, and in the process, the electrical contact element 11 is firstly matched with the first conductive section 21, and at the moment, because the electrical contact element 11 is firstly not in contact with the first conductive section 21, no friction force is generated between the two, so that the two are prevented from being worn; after the electric contact element 11 moves from the first conducting segment 21 to the second conducting segment 22, the electric contact element 11 is matched with the second conducting segment 22, at this time, because the electric contact element 11 is tightly contacted with the second conducting segment 22, the reliability of the electric connection between the electric contact element 11 and the second conducting segment 22 can be ensured, so that after the charging plug 1 extends out to the right position, the charging plug 1 and the conducting rod 2 can have good electric connectivity, and the stability of the conducting rod 2 for supplying power to the charging plug 1 is ensured.

After the charging is finished, when the charging plug 1 is withdrawn, the electrical contact element 11 is firstly matched with the second conductive segment 22 and then matched with the first conductive segment 21, and when the electrical contact element 11 moves to the first conductive segment 21, the electrical contact element is not in contact with the first conductive segment 21, and no friction force is generated between the electrical contact element and the first conductive segment 21.

Therefore, can see, compare in prior art electric contact element 11 with the conducting rod 2 contact all the time at the in-process that charging plug 1 removed, the utility model provides a charging plug conductive component, through two sections with the conducting rod 2 fall into different pole footpaths, make electric contact element 11 at the in-process that moves along first conducting segment 21, not contact with first conducting segment 21, and at the in-process that moves along second conducting segment 22, make electric contact element 11 and the close contact of second conducting segment 22, consequently, guaranteed power transmission's stability when reducing frictional force, can reduce electric contact element 11 and conducting rod 2's wearing and tearing, improve charging plug conductive component's life and charging plug 1 and stretch out the security of in-process.

It should be noted that the present invention does not limit the specific value of the rod diameter difference between the second conductive segment 22 and the first conductive segment 21, and it is subject to the electrical contact element 11, as long as the electrical contact element 11 is not in contact with the first conductive segment 21 when the electrical contact element 11 is engaged with the first conductive segment 21, but the electrical contact element 11 is in close contact with the second conductive segment 22 when the electrical contact element is engaged with the second conductive segment.

In addition, the present invention does not limit the specific structure of the electrical contact element 11, and those skilled in the art can adopt the prior art, for example, the electrical contact element 11 may be a contact finger of the spring 61 or a conductive elastic sheet.

In view of the smoothness of the movement of the electrical contact element 11 from the first conductive segment 21 to the second conductive segment 22, the junction of the first conductive segment 21 and the second conductive segment 22 is smoothly transitioned to ensure that the electrical contact element 11 is smoothly transitioned to the second conductive segment 22 in the above-described embodiment.

As shown in fig. 1, a truncated cone-shaped connecting segment is disposed between the first conductive segment 21 and the second conductive segment 22, the diameter of one end of the connecting segment is the same as that of the first conductive segment 21, and the diameter of the other end of the connecting segment is the same as that of the second conductive segment 22.

It should be noted that the taper of the connection segment is not limited in this embodiment, and it is understood that the smaller the taper of the connection segment is, the smoother the electrical contact element 11 moves from the first conductive segment 21 to the second conductive segment 22.

Except the above-mentioned charging plug conductive component, the utility model discloses still provide a charging terminal including the charging plug conductive component that above-mentioned embodiment is disclosed, this charging terminal still includes insulating slide 3 and drive arrangement 4, insulating slide 3 and charging plug conductive component's 1 fixed connection of charging plug, drive arrangement 4's output and insulating slide 3 fixed connection.

That is, when the driving device 4 drives the insulating slider 3 to move, the insulating slider 3 drives the charging plug 1 to move, and the electrical contact element 11 of the charging plug 1 moves along the conductive rod 2 of the conductive assembly of the charging plug.

It should be noted that the structures of the insulating slider 3 and the driving device 4 in this embodiment are the same as the structures of the conventional insulating slider 3 and the driving device 4 in the prior art, and are not described herein again.

The present embodiment focuses on using the charging plug conductive assembly disclosed in any one of the above embodiments to reduce the friction between the electrical contact element 11 and the conductive rod 2, reduce the wear of the two, and improve the service life of the charging plug.

In order to ensure the stability and the straightness of the movement of the insulating sliding base 3, on the basis of the above embodiment, the insulating sliding base 3 further comprises a guide rail 5 for guiding the insulating sliding base 3, and the insulating sliding base 3 is slidably connected with the guide rail 5.

That is, when the driving device 4 drives the insulating slider 3 to move, the insulating slider 3 moves along the guide rail 5.

In addition, it can be understood that, the driving device 4 in the prior art generally adopts a transmission mode of a stepping motor and a ball screw, and has a self-locking function, and the stepping motor cannot pull back the charging plug 1 without electricity, and to solve the technical problem, based on the above embodiment, the driving device 4 is a linear motor, stators of the linear motor are distributed along the length direction of the guide rail 5, and a rotor of the linear motor is connected with the insulating slide base 3 to drive the insulating slide base 3 to move when the linear motor is powered on, and pull the insulating slide base 3 to move by external force when the linear motor is powered off.

That is to say, this embodiment adopts linear electric motor direct drive insulating slide 3 to remove, and when linear electric motor under the circumstances of not having electricity, then lose effect between active cell and the stator, alright this moment through external force pulling insulating slide 3, make it return to initial position, improved emergent response efficiency.

In view of the ease of connection of the charging plug 1 to the insulating slider 3, on the basis of the above-described embodiment, the charging plug 1 is connected to the insulating slider 3 via a connecting arm.

The connecting arm plays a role in switching, so that the position relation between the charging plug 1 and the insulating slide base 3 can be reasonably arranged.

Further, in order to adjust the pose of the charging plug 1, so as to ensure the smooth connection between the charging plug 1 and the power receiving seat of the electric vehicle, on the basis of the above embodiment, an elastic component 6 having flexibility to adjust the pose of the charging plug 1 is disposed between the charging plug 1 and the connecting arm.

That is, under an external force, the elastic member 6 may be obliquely deformed or the like to adjust the posture of the charging plug 1 by the deformation of the elastic member 6 to ensure that the charging plug 1 has a correct position.

In view of the realization of the specific structure of the elastic member 6, on the basis of the above-described embodiment, the elastic member 6 includes the spring 61 and the rubber boot 62 fitted over the outer peripheral portion of the spring 61.

It can be understood that the rubber sheath 62 surrounds the outer periphery of the spring 61, and shields and hides the spring 61, so as to ensure the integrity of the housing of the charging plug 1 after assembly, and make the overall structure of the charging plug 1 more compact.

Preferably, the two ends of the rubber sheath 62 are respectively provided with a limiting plate for axially limiting the spring 61.

The limiting plate is preferably a bent plate to form a groove together with the inner side wall of the rubber sheath 62, and both ends of the spring 61 are respectively inserted into the groove.

It should be noted that, in the present embodiment, the fixing connection manner between the elastic component 6 and the charging plug 1 and the connection arm is not particularly limited.

For example, both ends of the elastic member 6 may be connected to the charging plug 1 and the connection arm by bolts, respectively.

In view of convenience of connection, on the basis of the above-described embodiment, the end of the elastic member 6 facing the charging plug 1 is provided with the connection flange 63, and the connection flange 63 is connected to the charging plug 1 by the first bolt 7.

In order to prevent the first bolt 7 from rusting, etc., a sealing shield 8 for preventing the first bolt 7 from being exposed is further included on the basis of the above-described embodiment.

It can be understood that the sealing cover 8 is used for covering the first bolt 7, preventing the first bolt 7 from being exposed, protecting the first bolt 7, preventing the first bolt from rusting and the like, and improving the reliability of connection.

In view of the specific structure of the sealing and protecting cover 8, on the basis of the above embodiment, a predetermined gap is formed between the connecting flange 63 and the elastic component 6, and the sealing and protecting cover 8 includes a first half ring 81 and a second half ring 82, which are abutted to each other to form a circular ring, which is embedded in the predetermined gap between the connecting flange 63 and the elastic component 6 and circumferentially encloses each first bolt 7.

It will be appreciated that a predetermined gap between the connecting flange 63 and the end surface of the elastic member 6 is provided to form an installation space for the first bolt 7, thereby facilitating the installation of the first bolt 7.

In consideration of the convenience of the connection between the first half ring 81 and the second half ring 82, on the basis of the above embodiment, the abutting end surfaces of the first half ring 81 and the second half ring 82 are respectively provided with the second bolt fixing holes, the first half ring 81 or the second half ring 82 is provided with the mounting holes 83 communicated with the second bolt fixing holes, and after the first half ring 81 and the second half ring 82 are abutted, the second bolts are put into the mounting holes 83, so that the second bolts are screwed with the second bolt fixing holes of the first half ring 81 and the second half ring 82, respectively.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

It is right above the utility model provides a charging plug conductive component and charging terminal have carried out detailed introduction. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.

Claims

1. A charging plug conductive assembly, comprising:

a charging plug (1) provided with an electrical contact element (11);

an electrically conductive rod (2) for transmitting electrical energy comprising a first electrically conductive segment (21) and a second electrically conductive segment (22) connected in series, the rod diameter of the first electrically conductive segment (21) being smaller than the rod diameter of the second electrically conductive segment (22); -said first conductive segment (21) is not in contact when mated with said electrical contact element (11); when the second conductive segment (22) is matched with the electric contact element (11), the two are in close contact; when the charging plug (1) is extended, the electrical contact element (11) slides from the first conductive section (21) to the second conductive section (22).

2. The charging plug conductive assembly according to claim 1, wherein a junction of the first conductive segment (21) and the second conductive segment (22) transitions smoothly.

3. A charging terminal, comprising:

the charging plug conductive component of claim 1 or 2;

the insulating sliding seat (3) is fixedly connected with the charging plug (1) of the charging plug conductive assembly;

and the output end of the driving device (4) is fixedly connected with the insulating sliding seat (3).

4. A charging terminal according to claim 3, characterized in that it further comprises a guide rail (5) for guiding the insulating slide (3), the insulating slide (3) being slidably connected to the guide rail (5).

5. The charging terminal according to claim 4, characterized in that the driving device (4) is a linear motor, the stator of the linear motor is distributed along the length direction of the guide rail (5), and the mover of the linear motor is connected with the insulating slide (3) to drive the insulating slide (3) to move when the linear motor is powered on and pull the insulating slide (3) to move by external force when the linear motor is powered off.

6. A charging terminal according to any of claims 3-5, characterized in that the charging plug (1) is connected to the insulating slide (3) by means of a connecting arm, between the charging plug (1) and the connecting arm there being a resilient member (6) with a degree of flexibility to adjust the attitude of the charging plug (1).

7. The charging terminal according to claim 6, wherein the elastic member (6) comprises a spring (61) and a rubber sheath (62) fitted around an outer circumferential portion of the spring (61).

8. A charging terminal according to claim 6, characterized in that the end of the resilient member (6) facing the charging plug (1) is provided with a connecting flange (63), which connecting flange (63) is connected to the charging plug (1) by means of a first bolt (7).

9. The charge terminal according to claim 8, further comprising a sealing shield (8) for avoiding the first bolt (7) from being exposed.

10. The terminal according to claim 9, characterized in that a predetermined gap is provided between the connection flange (63) and the elastic assembly (6), and the sealing cover (8) comprises a first half ring (81) and a second half ring (82) which are coupled to each other to form a ring, which is inserted into the predetermined gap and circumferentially encloses each of the first bolts (7).