CN112644308B

CN112644308B - Ground-plug lifting type electric automobile charging pile and working method

Info

Publication number: CN112644308B
Application number: CN202011412181.0A
Authority: CN
Inventors: 邓川; 张焱; 贝绍轶; 王宇; 丁爱书; 王晓雯; 朱圆月
Original assignee: Jiangsu University of Technology
Current assignee: Nantong Huawei Power Equipment Co ltd
Priority date: 2020-12-03
Filing date: 2020-12-03
Publication date: 2022-03-25
Anticipated expiration: 2040-12-03
Also published as: CN112644308A

Abstract

The invention relates to the technical field of charging piles, in particular to an underground-plug lifting type electric automobile charging pile and a working method thereof.

Description

Ground-plug lifting type electric automobile charging pile and working method

Technical Field

The invention relates to the technical field of charging piles, in particular to an underground-plug lifting type electric automobile charging pile and a working method.

Background

Charging pile among the prior art is generally vertical to be installed in parking stall one side, and the head that charges is connected with charging pile through the cable, when the car owner needs to charge, stops the car to corresponding parking stall earlier, and the car owner is connected the terminal charging plug of cable and the socket that charges on the car simultaneously and is realized charging. This type of charging requires that the front or rear of the vehicle be oriented toward the charging post depending on whether the socket on the vehicle is located at the front or at the rear of the vehicle so that the length of the cable is sufficient to align the plug with the socket. In addition, because charging voltage and electric current are great, because of the reason of charging safety, the cable is generally thicker and very heavy, and the connection of plug and socket needs sufficient cooperation compactness for the driver takes and puts the plug of taking the cable, and plug and socket need certain strength at the plug in-process, to the weak girl driver of strength, the operation process has certain degree of difficulty, and probably makes the socket cooperation insecure. .

Disclosure of Invention

In order to solve the problem that the operation is labor-consuming in the charging process of the existing charging pile in the prior art, the invention provides the ground-plug lifting type electric vehicle charging pile with labor-saving operation and a working method.

The technical scheme adopted by the invention for solving the technical problems is as follows:

an underground-plug lifting type electric automobile charging pile comprises a vehicle limiting mechanism arranged near the edge of a parking space, a vehicle detection device for detecting the position of a vehicle and a rotary base arranged on the ground, wherein a rotary guide rail is rotatably arranged on the rotary base, a slide block is arranged on the rotary guide rail, a lifting plug is arranged on the slide block and comprises a plug main body, a socket main body is arranged on a socket top plate of the automobile base,

the socket body comprises a side skirt connected with a socket top plate, the center of the socket top plate is provided with a socket skirt edge, a communication jack seat and a charging jack seat, the inner wall of the side skirt is provided with a spiral guide sliding rail, the inner wall of the side skirt and the position adjacent to the socket top plate are provided with a vertical sliding groove, the vertical sliding groove is arranged along the direction of the rotation center line of the side skirt, and the guide sliding rail extends from the bottom end of the side skirt to the vertical sliding groove;

the plug main part include plug bottom plate, plug bottom plate upside be connected with hollow circular cylinder's shell, the shell top is the ring shape, is equipped with plug shirt rim, communication plug socket and charging plug seat in plug bottom plate's central authorities, the shell is equipped with and is used for gliding guide body in direction slide rail and vertical spout, the radius of shell with the radius looks adaptation of socket roof.

Furthermore, the outer side wall of the shell is provided with a ball groove, the guide body comprises a ball arranged in the ball groove, a spring for pushing the ball outwards is arranged between the ball and the inner wall of the ball groove, the depth of the vertical sliding groove is larger than that of the guide sliding rail, and the diameter of the ball is matched with the width of the vertical sliding groove.

Furthermore, an annular sliding groove is formed in the ground, and a guide block matched with the annular sliding groove is fixed on the rotary guide rail.

Furthermore, subaerial parking stall head position is equipped with first straight line spout and second straight line spout, first straight line spout and second straight line spout along the length direction of parking stall, first straight line spout and second straight line spout in slide respectively and be equipped with first laser sensor and second laser sensor, subaerial third straight line spout and fourth straight line spout of being equipped with on one side of the parking stall, third straight line spout and fourth straight line spout are along the width direction of parking stall, third straight line spout and fourth straight line spout in slide respectively and be equipped with third laser sensor and fourth laser sensor.

Furthermore, the vehicle limiting mechanism comprises a first limiting block and a second limiting block which are arranged at the head of the parking space.

Furthermore, a socket top plate is used as a projection surface, two ends of the guide slide rail and the vertical slide groove form a closed angle in the projection surface, and the radius of the projection of the guide slide rail is larger than that of the socket top plate. The radius of side skirt bottom is greater than the radius of plug shell, is favorable to the plug main part to get into in the socket fast.

Furthermore, the side skirt is in a hollow conical shape, and the bottom end of the side skirt is in a circular ring shape.

Furthermore, the lifting plug also comprises a gas spring, the first end of the gas spring is connected with the plug main body, and the second end of the gas spring is fixed on the sliding block.

Further, fill electric pile still include control cabinet, connecting wire harness, trachea, pneumatic valve and air pump.

The working method of the ground plug lifting type electric automobile charging pile comprises the following steps:

s1: when a driver parks the automobile, the requirement on the fact that the automobile head or the automobile tail is close to the first limiting block and the second limiting block is not met;

s2: the driver gets off the vehicle and inputs the vehicle type into the console, and the console obtains the position parameter of the socket main body at the bottom of the vehicle according to the vehicle type;

s3: the console drives each laser sensor to reciprocate in the corresponding linear sliding chute to measure the body boundary of the automobile; calculating the boundary of the vehicle body by using the boundary positions of the vehicle body measured by each laser sensor to obtain the boundary position of the vehicle body;

s4: the control console calculates the position deviation of the socket main body relative to the lifting plug according to the position of the socket main body of the automobile part and the boundary of the automobile body, the control console drives the rotating base to rotate to a set position through the motor, and drives the sliding block to move to a set position along the rotating guide rail through the screw rod mechanism, so that the lifting plug is positioned right below the socket main body of the automobile bottom;

s5: the inner cavity of the air spring is communicated with an outlet of the air pump through a control air valve, high-pressure air output by the air pump enters the air spring to drive the air spring to move upwards, and under the action of balls, guide slide rails and vertical sliding grooves, after the directions of the lifting plug and the socket main body are completely aligned, contact pins in each communication plug seat can be inserted into jacks in corresponding communication jack seats, contact pins in each charging plug seat can be inserted into jacks in corresponding charging jack seats, plug skirt edges can be tightly matched with socket skirt edges, and then a control console charges an automobile through a wiring harness;

s6: when the charging process is finished, the console communicates the inner cavity of the air spring with the inlet of the air pump through the air valve, and the inlet of the air pump has a certain vacuum degree, so that the inner cavity of the air spring has a certain vacuum degree, and the air spring contracts to separate the plug main body from the socket main body.

Further, before the lifting plug is inserted into the socket body, the console switches the inner cavity of the air spring between the outlet and the inlet of the air pump at intervals through the air valve, so that the air spring vibrates up and down at high frequency, water drops on contact pieces in the communication plug seat and the charging plug seat are thrown away, the vibration frequency is 100Hz, and the vibration time lasts for 1 minute.

Has the advantages that:

(1) when the ground plug lifting type electric automobile charging pile is used, a driver only needs to drive a vehicle to a parking space, the lifting plug can move to the position of a socket of the vehicle, the lifting device such as an air spring is used for driving the plug and the socket to be plugged, manual plugging is not needed, and labor is saved;

(2) in the electric automobile charging socket assembly, the ball of the plug main body slides along the guide sliding rail of the socket main body and finally is guided to the vertical sliding groove, so that the plug main body and the socket main body are tightly matched, and the plug and the socket can be automatically aligned by utilizing the guiding process no matter the automobile is parked, and correct insertion is realized;

(3) the car stops in the parking stall, no matter be the locomotive or the rear of a vehicle towards the stopper of parking stall head, can both realize being connected smoothly of plug and socket, the flexibility is strong.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

FIG. 1 is an overall structure diagram of a ground-plug lifting type electric vehicle charging pile of the invention;

FIG. 2 is a schematic view of the overall construction of a lift plug mounted on a rail;

FIG. 3 is a front view of the socket body mounted to the bottom of the vehicle;

FIG. 4 is a cross-sectional view of the socket body;

FIG. 5 is a perspective view of a side skirt of the socket body;

FIG. 6 is a partial cross-sectional view of the socket body;

fig. 7 is a front structural view of the plug main body;

FIG. 8 is a cross-sectional view of the plug body;

fig. 9 is a perspective view of the plug main body;

FIG. 10 is a schematic view of a first parking position;

fig. 11 is a schematic view of a second parking position.

FIG. 12 is a schematic size view of the guide rail and the vertical runner;

fig. 13 is a schematic view of the guide rail length arrangement.

101, a first limit block, 102, a second limit block, 2, a vehicle detection device, 211, a first linear sliding groove, 212, a second linear sliding groove, 213, a third linear sliding groove, 214, a fourth linear sliding groove, 22, a first laser sensor, 23, a second laser sensor, 24, a third laser sensor, 25, a fourth laser sensor, 3, an annular sliding groove, 4, a rotating base, 5, a rotating guide rail, 51, a sliding block, 6, a guide block, 7, a lifting plug, 71, a plug main body, 711, a plug bottom plate, 712, a plug skirt, 713, a communication plug seat, 714, a charging plug seat, 715, a housing, 716, a ball groove, 717, a ball, 718, a spring, 72, a gas spring, 8, a socket main body, 81, a socket top plate, 82, a side skirt, 821, a side skirt bottom end, 83, a socket, 84, a charging jack seat, 85, a communication jack seat, 86. guide slide rail, 87, vertical sliding groove, 9, console, 10, connecting wire harness and air pipe, 11, body boundary, 12, parking space.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

An underground-plug lifting type electric automobile charging pile comprises a vehicle limiting mechanism arranged near the edge of a parking space 12, a vehicle detection device 2 for detecting the position of a vehicle and a rotating base 4 arranged on the ground, wherein a rotating guide rail 5 is rotatably arranged on the rotating base 4, a slide block 51 is arranged on the rotating guide rail 5, a lifting plug 7 is arranged on the slide block 51, the lifting plug 7 comprises a plug main body 71, a socket main body 8 with a downward opening is arranged at the bottom of an automobile,

the socket main body 8 includes a socket top plate 81 fixedly connected to the bottom of the automobile, and a side skirt 82 connected to the socket top plate 81, as clearly shown in the partial cross-sectional view of fig. 6, a socket skirt 83, a communication jack seat 85 and a charging jack seat 84 are provided in the center of the socket top plate 81, a spiral guide slide rail 86 is provided on the inner wall of the side skirt 82, a vertical slide groove 87 is provided on the inner wall of the side skirt 82 near the socket top plate 81, the vertical slide groove 87 is provided along the direction of the rotation center line of the side skirt 82, and the guide slide rail 86 extends from the bottom 821 of the side skirt to the lower end of the vertical slide groove 87.

The plug main body 71 comprises a plug bottom plate 711, a hollow cylindrical outer shell 715 is connected to the upper side of the plug bottom plate 711, the top end of the outer shell 715 is in a circular ring shape, a plug skirt 712, a communication plug seat 713 and a charging plug seat 714 are arranged in the center of the plug bottom plate 711, the outer shell 715 is provided with a guide body which is used for sliding on the guide sliding rail 86 and in the vertical sliding groove 87, and the radius of the outer shell 715 is matched with that of the socket top plate 81.

The outer side wall of the top of the shell 715 is provided with a ball groove 716, the guide body comprises a ball 717 arranged in the ball groove 716, a spring 718 pushing the ball 717 outwards is arranged between the ball and the inner wall of the ball groove 716, and the opening diameter of the ball groove 716 is smaller than the diameter of the ball. As shown in fig. 12, the depth K of the vertical sliding groove 87 is greater than the depth M of the guide sliding rail 86, and the diameter of the ball 717 matches the width L of the vertical sliding groove 87, so that the ball 717 can smoothly fall into and be held in the vertical sliding groove 87 after moving to the end along the guide sliding rail 86.

The socket top plate 81 is used as a projection plane, two ends of the guide slide rail 86 and the vertical slide groove 87 form a 360-degree closed angle in the projection plane, so that when the plug main body 71 is inserted into the socket main body 8 in different directions, the guide function of the balls 717 and the guide slide rail 86 can be exerted, only after the plug skirt 712, the communication plug seat 713 and the charging plug seat 714 in the plug main body 71 are respectively aligned with the socket skirt 83, the communication jack seat 85 and the charging jack seat 84 in the socket main body 8, the balls 717 fall into the vertical slide groove 87, under the sliding fit function of the balls 717 and the vertical slide groove 87, the movement process between the plug main body 71 and the socket main body 8 is converted into opposite movement from the rotary movement before alignment, so that the plug skirt 712, the communication plug seat 713 and the charging plug seat 714 are respectively engaged and sleeved with the socket skirt 83, the communication jack seat 85 and the charging jack seat 84 into a whole, the looseness between the plug and the socket and poor contact between the conductive contact pieces of the plug and the socket are prevented.

Meanwhile, the radii of the projections of the guide rails 86 are all larger than the radius of the socket top plate 81, that is, the radius of the housing 715 of the plug main body 71, so that the plug main body 71 can conveniently extend into the depth of the socket main body 8, and the plug skirt 712, the communication plug seat 713 and the charging plug seat 714 can be engaged with the socket skirt 83, the communication jack seat 85 and the charging jack seat 84 more tightly.

Preferably, in the projection plane, the circumferential angle between the two ends of the guide rail 86 along the circumferential direction is greater than 360 degrees, so that there is an overlapping area of the circumferential angle between the head and tail ends of the guide rail 86 in the circumferential direction, as shown in fig. 13, and the overlapping angle is R. The reason for this is that: when the balls 717 face the vertical sliding grooves 87 and the plug main body 71 is inserted into the socket main body 8, the balls 717 may deviate in direction when sliding along the inner surface of the side skirt 82, so that the balls 717 cannot enter the vertical sliding grooves 87 to cause the connection failure between the plug and the socket.

An annular sliding groove 3 is arranged on the ground, and a guide block 6 matched with the annular sliding groove 3 is fixed on the rotary guide rail 5.

A first linear sliding groove 211 and a second linear sliding groove 212 are arranged at the head of the parking space 12 on the ground, the first linear sliding groove 211 and the second linear sliding groove 212 are arranged along the length direction of the parking space 12, a first laser sensor 22 and a second laser sensor 23 are respectively arranged in the first linear sliding groove 211 and the second linear sliding groove 212 in a sliding mode, a third linear sliding groove 213 and a fourth linear sliding groove 214 are arranged on one side of the parking space 12 on the ground, the third linear sliding groove 213 and the fourth linear sliding groove 214 are arranged along the width direction of the parking space 12, and a third laser sensor 24 and a fourth laser sensor 25 are respectively arranged in the third linear sliding groove 213 and the fourth linear sliding groove 214 in a sliding mode.

The vehicle limiting mechanism comprises a first limiting block 101 and a second limiting block 102 which are arranged at the head of the parking space 12.

The side skirt 82 is in a hollow conical shape, and the bottom end of the side skirt 82 is in a circular ring shape.

The lifting plug 7 further includes a gas spring 72, a first end of the gas spring 72 is connected to the plug main body 71, and a second end of the gas spring 72 is fixed to the slider 51.

Fill electric pile and still include control cabinet 9, connecting wire harness, trachea 10, pneumatic valve and air pump, and air spring 72 passes through the trachea and is connected with the air pump, and is equipped with the pneumatic valve on the trachea.

The working method of the ground-plug lifting type electric vehicle charging pile is characterized in that: the method comprises the following steps:

s1: when a driver parks the automobile in the parking space 12, the whole automobile body is required to be positioned in an area within the boundary line of the parking space 12, and when the driver parks the automobile, no requirement is made on whether the head or the tail of the automobile is close to the first limiting block 101 and the second limiting block 102;

s2: a driver gets off and inputs the vehicle type into the control console 9, and the control console 9 obtains the position parameters of the socket main body 8 at the bottom of the vehicle according to the vehicle type;

s3: the console 9 drives each laser sensor to reciprocate in the corresponding linear sliding chute to measure the body boundary 11 of the automobile; calculating the boundary of the vehicle body by using the positions of the vehicle body boundary 11 measured by each laser sensor to obtain the position of the vehicle body boundary 11, as shown in fig. 10-11;

s4: the control platform 9 calculates the position deviation of the socket main body 8 relative to the lifting plug 7 according to the position of the socket main body 8 at the bottom of the automobile and the automobile body boundary 11, the control platform 9 drives the rotating base 4 to rotate to a set direction through the motor, and drives the slide block 51 to move to a set position along the rotating guide rail 5 through the screw rod mechanism, so that the lifting plug 7 is positioned right below the socket main body 8 at the bottom of the automobile;

s5: the inner cavity of the air spring 72 is communicated with the outlet of the air pump through the control air valve, high-pressure air output by the air pump enters the air spring 72 to drive the air spring 72 to move upwards, according to the plugging principle of the plug main body 71 and the socket main body 8, no matter the orientation of the plug main body 71 and the socket main body 8, under the action of the balls 717, the guide slide rails 86 and the vertical slide grooves 87, the orientation of the plug main body 71 and the orientation of the socket main body 8 can be completely aligned, the contact pins in each communication plug seat 713 can be inserted into the corresponding jack of the communication jack seat 85, the contact pins in each charging plug seat 714 can be inserted into the corresponding jacks in the charging jack seats 84, the plug skirt 712 can be tightly matched with the socket skirt 83, and then the control console 9 is charged with an automobile through a wiring harness;

s6: when the charging process is finished, the console 9 communicates the inner cavity of the gas spring 72 with the inlet of the gas pump through the gas valve, and the inlet of the gas pump has a certain vacuum degree, so that the inner cavity of the gas spring 72 has a certain vacuum degree, and under the combined action of the resilience force of the gas spring 72 and the vacuum degree, the gas spring 72 contracts to realize the separation of the plug main body 71 and the socket main body 8.

In rainy days, before the lifting plug 7 is inserted into the socket main body 8, the console 9 switches the inner cavity of the gas spring 72 between the outlet and the inlet of the gas pump at intervals through the gas valve, so that the gas spring 72 vibrates up and down at high frequency, water drops on contact pieces in the communication plug seat 713 and the charging plug seat 714 are thrown away, the vibration frequency is 100Hz, and the vibration time lasts for 1 minute.

The parking state of the vehicle is generally divided into two cases, the first case where the boundary line between the vehicle body and the parking space 12 is parallel as shown in fig. 10, and the second case where the boundary line between the vehicle body and the parking space 12 is not parallel as shown in fig. 11

The four laser sensors slide in a direction perpendicular to the boundary line of the vehicle space and are driven to slide by a screw mechanism (not shown). The left central axis and the right central axis of the parking space are taken as symmetry lines, an annular chute 3 is arranged in the middle of the parking space, a rotating base 4 driven by a motor is arranged at the center of the annular chute 3, the top of the rotating base 4 is fixedly connected with one end of a rotating guide rail 5, a guide block 6 is arranged at the bottom of the other end of the rotating guide rail 5, the guide block 6 is suitable for being in sliding fit with the annular chute 3, a sliding block 51 is arranged on the rotating guide rail 5 in a sliding fit manner, the sliding block 51 is driven by a screw rod mechanism in the rotating guide rail 5, a lifting plug 7 is arranged at the upper end of the sliding block 51, a wire harness and an air pipe 10 connected with the lifting plug 7 penetrate through the sliding block 51, and the rotating guide rail 5 and the rotating base 4 are connected with a controller, an air pump and an air valve in a control console 9 on one side of the parking space.

As shown in fig. 2, the lift plug 7 includes a plug main body 71 and a gas spring 72, the gas spring 72 connects the upper plug main body 71 and the lower slider 51, and a wire harness connected to the plug main body 71 passes hermetically through the inside of the gas spring 72. The gas spring 72 is made of a rubber material and has a certain flexibility to allow the plug main body 71 to perform a rotational movement with respect to the slider 51.

As shown in fig. 3 to 6, the socket main body 8 disposed at a bottom portion of the automobile near the center is disposed vertically downward.

As shown in fig. 7 to 9, the plug main body 71 includes a plug base plate 711 connected to a gas spring 72, the plug base plate 711 is connected to an upper side of the plug base plate 711, a hollow cylindrical housing 715 is connected to an upper side of the plug base plate 711, a top end of the housing 715 is circular, a plug skirt 712, a communication plug seat 713 and a charging plug seat 714 meeting national standards are disposed at a center of the plug base plate 711, a ball groove 716 is disposed on an outer side wall of the housing adjacent to the top end of the housing 715, a ball 717 is disposed therein, a spring 718 is disposed between the ball 717 and an inner wall of the ball groove 716, the spring 718 is adapted to push the ball 717 to an outer side, and the ball 717 is adapted to roll in the ball groove 716. The radius of the housing 715 is adapted to the radius of the socket top plate 81. The diameter of the balls 716 is matched to the width of the vertical sliding groove 87, and the balls falling into the vertical sliding groove 87 are guided to roll in the groove.

The plugging principle of the plug and the socket is as follows:

when the plug main body 71 is aligned with the position of the socket main body 8, the gas spring 72 is inflated to drive the plug main body 71 to move upwards, when the top of the plug main body 71 extends into the socket main body 8, the balls 717 abut against the guide slide rails 86 on the inner walls of the side skirts 82 of the socket main body 8 under the action of the springs 718, the balls 717 cannot move vertically upwards under the pushing of air pressure along with the extension of the gas spring 72, the balls 717 only move spirally upwards along the guide slide rails 86 until the balls 717 slide to the top ends of the guide slide rails 86 and fall into the vertical slide grooves 87, at this time, each communication plug seat on the plug main body 71 is aligned with a corresponding communication jack seat on the socket main body 8, each charging plug seat is aligned with a corresponding charging jack seat, the plug skirt is aligned with the socket skirt, and when the balls 717 slide continuously along the vertical slide grooves 87, the plug and the socket are moved oppositely, the skirt edge of the plug is tightly matched with the skirt edge of the socket, each communication jack seat is tightly matched with the communication plug seat, each charging jack seat is tightly matched with the charging plug seat, and the connection process between the plug and the socket is completed.

When the plug main body 71 and the socket main body 8 need to be separated, high-pressure gas in the gas spring 72 is discharged and is connected with the straight hollow pipe, under the action of the resilience force of the gas spring 72 and the vacuum degree inside the gas spring 72, the plug main body 71 moves downwards, the balls 717 slide out of the vertical sliding grooves 87, and when the balls 717 meet the guide sliding rails 86 in the downward movement process, the balls are pressed against the guide sliding rails 86 and spirally move downwards along the guide sliding rails 86 until the balls are separated from the guide sliding rails 86.

Rubber sealing devices are arranged in the plug main body 71, the socket main body 8, the control console 9, the connecting wire harness and the air pipe 10, the vehicle detection device 2, the rotating base 4, the sliding block 51, the rotating guide rail 5, the air spring 72 and the like, so that short circuit caused by rainwater entering is prevented. In order to prevent water accumulation in the plug during rain, drain holes are provided in the plug bottom plate 711, the plug skirt 712, the communication plug seat 713, and the charging plug seat 714.

The working steps are as follows:

1. when a driver parks the automobile, the head and the tail of the automobile do not have requirements on the head of the automobile facing the head of the parking space.

2. A driver gets off and inputs the vehicle type into the control console 9, and the control console 9 obtains the position parameters of the socket at the bottom of the vehicle according to the vehicle type;

3. the console drives each laser sensor to reciprocate in the corresponding linear sliding chute to measure the body boundary of the automobile; the boundary of the vehicle body is calculated using the boundary positions of the vehicle body measured by the respective laser sensors, and the resultant vehicle body boundary is shown in fig. 10 to 11. The state of the vehicle parking is generally divided into two cases, the first case where the boundary of the vehicle body is parallel to the boundary line of the vehicle space as shown in fig. 10, and the second case where the boundary of the vehicle body is not parallel to the boundary line of the vehicle space as shown in fig. 11.

4. The control console calculates the position deviation of the socket main body 8 relative to the plug main body 71 according to the position of the socket main body 8 at the bottom of the automobile and the boundary of the automobile body, the control console 9 drives the rotating base 4 to rotate to a set direction through the motor, and drives the slide block 51 to move to a set position along the rotating guide rail 5 through the screw rod mechanism, so that the plug main body 71 is positioned right below the socket main body 8 at the bottom of the automobile;

5. the control console 9 communicates the inner cavity of the air spring 72 with the outlet of the air pump through an air valve, high-pressure air output by the air pump enters the air spring 72 to drive the air spring 72 to move upwards, according to the plugging principle of the plug main body 71 and the socket main body 8, even if a certain angle deviation exists between the plug main body 71 and the socket main body 8, under the action of the balls 717, the guide slide rails 86 and the vertical slide grooves 87, the directions of the plug main body 71 and the socket main body 8 are completely aligned, the contact pins in each communication plug seat 713 are inserted into the corresponding jack of the communication jack seat 85, the contact pins in each charging plug seat 714 are inserted into the corresponding jacks in the charging jack seats 84, the plug skirt 712 is tightly matched with the socket skirt 83, and then the control console 9 charges the automobile through a wiring harness;

6. when the charging process is finished, the console 9 communicates the inner cavity of the gas spring 72 with the inlet of the gas pump through the gas valve, and the inlet of the gas pump has a certain vacuum degree, so that the inner cavity of the gas spring 72 has a certain vacuum degree, and under the combined action of the resilience force of the gas spring 72 and the vacuum degree, the gas spring contracts to realize the separation of the plug main body 71 and the socket main body 8.

Preferably, in order to prevent the contact pieces in the communication plug seat 713 and the charging plug seat 712 from being adhered with water drops when raining and to prevent the risk of electric leakage due to poor contact after the plug main body 71 is connected with the socket main body 8, a step is added between the steps 4 and 5:

the console 9 switches the inner cavity of the gas spring 72 between the outlet and the inlet of the gas pump at intervals through the gas valve, so that the gas spring 72 vibrates up and down at high frequency, water drops on contact pieces in the communication plug seat 713 and the charging plug seat 714 are thrown away, the vibration frequency is 100Hz, and the vibration time lasts for 1 minute.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The ground-plug lifting type electric automobile charging pile is characterized by comprising a vehicle limiting mechanism arranged near the edge of a parking space (12), a vehicle detection device (2) used for detecting the position of a vehicle and a rotary base (4) arranged on the ground, wherein the rotary base (4) is rotatably provided with a rotary guide rail (5), the rotary guide rail (5) is provided with a slide block (51), the slide block (51) is provided with a lifting plug (7), the lifting plug (7) comprises a plug main body (71) rotating relative to the slide block (51), a socket main body (8) is arranged on a socket top plate (81) of the automobile base,

the socket main body (8) comprises a side skirt (82) connected with a socket top plate (81), the center of the socket top plate (81) is provided with a socket skirt (83), a communication jack seat (85) and a charging jack seat (84), the inner wall of the side skirt (82) is provided with a spiral guide sliding rail (86), the inner wall of the side skirt (82) is provided with a vertical sliding groove (87) adjacent to the socket top plate (81), the vertical sliding groove (87) is arranged along the direction of the rotation center line of the side skirt (82), and the guide sliding rail (86) extends from the bottom end (821) of the side skirt to the vertical sliding groove (87);

the plug main body (71) comprises a plug bottom plate (711), the upper side of the plug bottom plate (711) is connected with a hollow cylindrical shell (715), the center of the plug bottom plate (711) is provided with a plug skirt (712), a communication plug seat (713) and a charging plug seat (714), the shell (715) is provided with a guide body which is used for sliding in a guide sliding rail (86) and a vertical sliding groove (87), and the radius of the shell (715) is matched with that of the socket top plate (81);

the utility model provides a ball guide device, including shell (715) lateral wall on be equipped with ball groove (716), the guide body including setting up ball (717) in ball groove (716), ball and ball groove (716) inner wall are equipped with spring (718) that outwards pushed up ball (717), the degree of depth of vertical spout (87) is greater than the degree of depth of direction slide rail (86), the diameter of ball (717) with the width phase-match of vertical spout (87).

2. The ground inserts over-and-under type electric automobile and fills electric pile according to claim 1, its characterized in that: the ground is provided with an annular sliding groove (3), and a guide block (6) matched with the annular sliding groove (3) is fixed on the rotating guide rail (5).

3. The ground inserts over-and-under type electric automobile and fills electric pile according to claim 1, its characterized in that: subaerial parking stall (12) head position is equipped with first straight line spout (211) and second straight line spout (212), the length direction of parking stall (12) is followed in first straight line spout (211) and second straight line spout (212), first straight line spout (211) and second straight line spout (212) in slide respectively and be equipped with first laser sensor (22) and second laser sensor (23), subaerial parking stall (12) one side is equipped with third straight line spout (213) and fourth straight line spout (213), the width direction of parking stall (12) is followed in third straight line spout (213) and fourth straight line spout (213), third straight line spout (213) and fourth straight line spout (213) in slide respectively and be equipped with third laser sensor (24) and fourth laser sensor (25).

4. The ground inserts over-and-under type electric automobile and fills electric pile according to claim 1, its characterized in that: the vehicle limiting mechanism comprises a first limiting block (101) and a second limiting block (102) which are arranged at the head of the parking space (12).

5. The ground inserts over-and-under type electric automobile and fills electric pile according to claim 1, its characterized in that: the socket top plate (81) is used as a projection surface, two ends of the guide sliding rail (86) and the vertical sliding groove (87) form a 360-degree closed angle in the projection surface, the radius of the projection of the guide sliding rail (86) is larger than that of the socket top plate (81), the side skirt (82) is in a hollow conical shape, and the bottom end of the side skirt (82) is in a circular ring shape.

6. The ground inserts over-and-under type electric automobile and fills electric pile according to claim 1, its characterized in that: the lifting plug (7) further comprises a gas spring (72), the first end of the gas spring (72) is connected with the plug main body (71), and the second end of the gas spring (72) is fixed on the sliding block (51).

7. The ground inserts over-and-under type electric automobile and fills electric pile according to claim 1, its characterized in that: the charging pile further comprises a control console (9), a connecting wire harness, an air pipe (10), an air valve and an air pump.

8. The working method of the ground-plug lifting type electric vehicle charging pile according to any one of claims 1 to 7, characterized by comprising the following steps: the method comprises the following steps:

s1: when a driver parks the automobile in the parking space (12), the whole automobile body is required to be positioned in an area within the boundary line of the parking space (12), and the driver does not have requirements on whether the head or the tail of the automobile is close to the first limiting block (101) and the second limiting block (102);

s2: a driver gets off and inputs the vehicle type into the control console (9), and the control console (9) obtains the position parameters of the socket main body (8) at the bottom of the vehicle according to the vehicle type;

s3: the console (9) drives each laser sensor to reciprocate in the corresponding linear sliding groove to measure the body boundary (11) of the automobile; calculating the boundary of the vehicle body by using the positions of the vehicle body boundary (11) measured by each laser sensor to obtain the position of the vehicle body boundary (11);

s4: the control console (9) calculates the position deviation of the socket main body (8) relative to the lifting plug (7) according to the position of the socket main body (8) of the automobile part and the automobile body boundary (11), the control console (9) drives the rotating base (4) to rotate to a set position through a motor, the sliding block (51) is driven to move to a set position along the rotating guide rail (5) through a screw rod mechanism, and the lifting plug (7) is located right below the socket main body (8) of the automobile bottom;

s5: the inner cavity of the air spring (72) is communicated with the outlet of the air pump through a control air valve, high-pressure air output by the air pump enters the air spring (72) to drive the air spring (72) to move upwards, and under the action of balls (717), a guide sliding rail (86) and a vertical sliding groove (87), after the directions of a lifting plug (7) and a socket main body (8) are completely aligned, a contact pin in each communication plug seat (713) can be inserted into a jack of a corresponding communication jack seat (85), a contact pin in each charging plug seat (714) can be inserted into a jack in a corresponding charging jack seat (84), a plug skirt (712) can be tightly matched with a socket skirt (83), and then a control console (9) is charged with an automobile through a wiring harness;

s6: when the charging process is finished, the inner cavity of the air spring (72) is communicated with the inlet of the air pump through the air valve by the control console (9), the inlet of the air pump has certain vacuum degree, so that the inner cavity of the air spring (72) has certain vacuum degree, and the air spring (72) contracts to separate the plug main body (71) from the socket main body (8).

9. The working method of the ground-plug lifting type electric vehicle charging pile according to claim 8, characterized by comprising the following steps: before the lifting plug (7) is inserted into the socket main body (8), the console (9) switches the inner cavity of the air spring (72) between the outlet and the inlet of the air pump at intervals through the air valve, so that the air spring (72) vibrates up and down at high frequency, water drops on contact pieces in the communication plug seat (713) and the charging plug seat (714) are thrown away, the vibration frequency is 100Hz, and the vibration time lasts for 1 minute.