CN111591155A

CN111591155A - Electric automobile external charging transformation and installation method

Info

Publication number: CN111591155A
Application number: CN202010491685.XA
Authority: CN
Inventors: 李夕林; 纪军
Original assignee: Individual
Current assignee: Zhuhai Titans Technology Co ltd
Priority date: 2020-06-02
Filing date: 2020-06-02
Publication date: 2020-08-28
Anticipated expiration: 2040-06-02
Also published as: CN111591155B

Abstract

The invention relates to an external charging transformation and installation method for an electric automobile, and belongs to the field of electric automobiles. Including the inner shell, set up two electrode module in the inner shell, the electric machine module fills electric pile through the wire connection, and the slider is fixed to the inner shell lower extreme, and the slider cooperation is on the slide rail, and the slide rail is fixed subaerial, sets up the backshifting spring between inner shell and the wall. Make the head that charges and the mouth that charges can accurately correspond to avoid charging the head and mouthful contact failure that charges through the fricative mode, improved convenience and security, also can avoid forgetting the condition of drawing a gun to take place simultaneously, use the charging device of former car to reform transform, improved degree of matching and installation cost.

Description

Electric automobile external charging transformation and installation method

Technical Field

The invention relates to an external charging transformation and installation method for an electric automobile, and belongs to the field of electric automobiles.

Background

The electric vehicle (BEV) is a vehicle which takes a vehicle-mounted power supply as power and drives wheels by a motor, and meets various requirements of road traffic and safety regulations. The automobile has a small influence on the environment, so that the prospect is widely seen, but the current technology is not mature.

For the convenience of replenishing electric energy, the manufacturer generally can fill electric pile for installation of private car parking stall or garage, and the rifle that charges through filling electric pile charges, and the rifle that charges need insert electric automobile's the mouth that charges with the rifle that charges, and is similar with the nozzle at filling station. However, the non-professional driver often forgets to pull out the gun and gets on the vehicle to drive, which causes damage to the charging gun or the charging port and increases the maintenance cost. Severe can cause the charging port or the charging gun electrodes to buckle, which can pose a fire risk if shorted. The contact tightness degree of the charging port can influence the conducting effect to a great extent, if the charging port is arranged externally, two problems cannot be solved by the prior art, one is that the position of a vehicle is not the same every time when the vehicle is parked every time, and the charging head and the charging port cannot be accurately corresponding; the other is that the vehicle is outdoor driving, and the metal electrode of the charging port is oxidized or attached with dust due to the influence of external humidity, temperature, chemical corrosion, dust and the like, so that the contact with the charging head is poor, the charging efficiency is greatly influenced, and sometimes, the vehicle generates heat due to overlarge local resistance, and even the vehicle is self-ignited.

Disclosure of Invention

According to the defects in the prior art, the technical problems to be solved by the invention are as follows: the charging head and the charging port can accurately correspond to each other, poor contact between the charging head and the charging port is avoided in a friction mode, convenience and safety are improved, meanwhile, the situation that a gun is forgotten to be pulled out can be avoided, the charging device of an original vehicle is used for improvement, the matching degree is improved, and the installation cost is reduced.

The invention relates to an external charging transformation and installation method of an electric automobile, which comprises an inner shell, wherein two electrode modules are arranged in the inner shell, a motor module is connected with a charging pile through a wire, a sliding block is fixed at the lower end of the inner shell and matched on a sliding rail, the sliding rail is fixed on the ground through a bolt, a backward moving spring is arranged between the inner shell and a wall surface, the position of the sliding rail is located in the middle of the rear end of a parking space, the charging pile is fixed on a wall body, a charging wire of the charging pile is cut off, and an outer shell of a charging;

the electrode module comprises an electrode plate, a swinging block is arranged behind the electrode plate and hinged with the electrode plate in the direction parallel to the ground, the swinging block is hinged with the inner shell in the direction vertical to the ground, a torsion spring is coaxially arranged at the hinged position of the electrode plate and the swinging block, the two electrode plates are respectively connected with a charging pile through leads, and the electrode plate is made of metal;

the electric automobile afterbody sets up two acceptor spares, the acceptor is located the intermediate position of automobile afterbody, the acceptor is horizontal cell type, its length is greater than the width of plate electrode, acceptor both sides wall is sunken to the direction in opposite directions, and its both ends are opened and are the loudspeaker form, every acceptor all is connected through wire and the head that charges of pulling down, insert the head that charges of car mouthful and with the intraoral contact matched connection that charges, the height of every acceptor all corresponds with the height of corresponding plate electrode.

The principle and the working process are as follows: the car backs a car and puts in storage and gets into the parking stall, the in-process of backing a car receives the thing and can contact with the plate electrode, because it is horizontal cell type to receive the thing, its length is greater than the width of plate electrode, it is sunken to opposite direction to receive thing both sides wall, and its both ends are opened and are the loudspeaker form, even if the position of parking at every turn all has some differences when the car is put in storage like this, but receive the thing can both correspond with the plate electrode on, and receive the opening of thing loudspeaker form and can play the guide effect, can not take place the micro-change and can't realize the contact that charges because of car child atmospheric pressure, the car height that. The plate electrode contacts with the receptor piece to in the continuous back-shifting plate electrode along with the car inserts the receptor piece, the plate electrode rubs with the protruding department of receptor piece simultaneously, falls oxide layer and dust friction, guarantees electric conductivity, avoids local contact failure to lead to the high resistance, and then generates heat and causes the potential safety hazard. The car lasts the lapse, and electrode plate pushes up to the acceptor bottom this moment, and the acceptor pushes away the inner shell lapse, and the inner shell moves backward along the slide rail, and the spring compression that moves backward can guarantee like this that the acceptor contacts with the electrode plate all the time, avoids damaging the inner shell simultaneously. When the automobile drives away, the backward moving spring pushes the inner shell to reset, the receptor piece is separated from the electrode plate, and the torsion spring enables the electrode plate to reset.

Including splint, two received pieces are fixed at the splint back, splint openly top sets up a screw thread section of thick bamboo, both ends cooperate the screw rod respectively in the screw thread section of thick bamboo, two screw rods revolve to opposite, a screw rod tip passes through the hinge and articulates on splint openly, another screw rod passes through the hinge and fixes on the automobile body, splint openly below passes through the hinge articulated seat of hinge, articulated seat is fixed on the automobile body, splint below rigidity like this, the interval of two screw rods is adjusted through rotatory screw thread section of thick bamboo to the top, and then make splint and ground perpendicular, it is good to guarantee received piece and plate electrode contact.

The hinge and the hinge seat are fixed on the vehicle body and the clamping plate in a sticking mode, and the installation is convenient.

Set up a splint again at splint rear, fix the acceptor on the splint at rear, set up flexible gasbag between two splint, flexible gasbag perisporium fold is folding, flexible gasbag can only stretch out and draw back in the horizontal direction like this, at flexible gasbag, rear splint, all set up the aperture on the acceptor spare, these apertures are coaxial and intercommunication, the electrode plate can compress flexible gasbag after touching the end in the acceptor spare, gas in the flexible gasbag can be followed the downthehole blowout of aperture and formed the air current, the air current blows acceptor spare internal surface, rainwater etc. on will probably attaching to blow away, avoid the short circuit hidden danger and guarantee electrically conductive effect.

The outer cooperation shell of inner shell, the shell is located the inner shell front side, set up two through-holes on the shell lateral wall, the position of two through-holes corresponds with the position of two plate electrodes respectively, the gyro wheel is installed respectively in shell bottom four corners, leave certain surplus between through-hole and the plate electrode, the push pedal is fixed to the upper and lower equal level in position of two receiving parts, the push pedal is fixed on splint, the tip of push pedal surpasss in the tip of receiving parts, set up reset spring between inner shell and the shell, reset spring's elasticity is less than the elasticity of lapse spring, when reset spring is in natural state, the plate electrode tip surpasses in the shell.

The principle and the working process are as follows: two through-holes play the guide effect, because the plate electrode is articulated with the pendulum piece, the through-hole can avoid the plate electrode degree of curvature too big, leaves certain surplus between through-hole and the plate electrode, leaves the space for the plate electrode luffing motion. When reset spring was in natural state, the electrode plate tip surpassed the length of shell and was not more than 2 centimetres, and the electrode plate is most hidden in the shell like this, avoided the foreign object overlap joint to lead to the short circuit. When the automobile backs a car and enters a garage, the push plate firstly contacts the outer shell and pushes the outer shell to move backwards, at the moment, the inner shell is fixed, and the electrode plate is exposed out of the side wall of the outer shell and is in contact with the receptor piece to charge. The electrode plate is wrapped by the inner shell and the outer shell, so that a good protection effect is achieved. Meanwhile, the push plate can also play a role in shielding dust and rainwater.

The smooth side of one side wall of plate electrode is equipped with the bulge evenly on one side wall, and the smooth side corresponds and sets up the driving wheel, and the driving wheel is fixed on spacing spring, and spacing spring is fixed on the shell inner wall, and the bulge side sets up the fixed wheel, and the fixed wheel corresponds with the bulge, and the fixed wheel is installed on the shell inner wall, and the driving wheel top is on the plate electrode lateral wall for the bulge on the plate electrode is pushed up on the fixed wheel.

The principle and the working process are as follows: the shell is at the back-shifting in-process, plate electrode and fixed wheel emergence relative movement, plate electrode can be by jack-up when protruding and the gyro wheel contact, the protruding is through the back driving wheel force plate electrode to reset, and the pendulum piece is articulated on perpendicular ground direction with the inner shell, the plate electrode just realizes the horizontal hunting like this, plate electrode and the left and right sides friction that receives the protruding department of spare just lasting so, oxide layer and spot just can be fine by the friction fall, and then just can guarantee fine contact effect, guarantee electric conductivity, avoid local contact failure to lead to the high resistance, and then generate heat and cause the potential safety hazard.

The end part of the electrode plate is wedge-shaped, so that the electrode plate can be more conveniently inserted into a receptor part.

Compared with the prior art, the invention has the beneficial effects that:

the external charging high-efficiency electric vehicle charging device has the advantages that the vehicle backs into a parking space, the receptor member can be in contact with the electrode plate in the process of backing, the receptor member is in a transverse groove shape, the length of the receptor member is larger than the width of the electrode plate, two side walls of the receptor member are sunken towards opposite directions, and two ends of the receptor member are opened to form the horn shape, so that the receptor member can correspond to the electrode plate even if the vehicle is parked at a parking position every time in the process of warehousing, the horn-shaped opening of the receptor member can play a role in guiding, and the charging contact cannot be realized due to small changes of the vehicle height caused by air pressure and suspension aging of a vehicle tire. The plate electrode contacts with the receptor piece to in the continuous back-shifting plate electrode along with the car inserts the receptor piece, the plate electrode rubs with the protruding department of receptor piece simultaneously, falls oxide layer and dust friction, guarantees electric conductivity, avoids local contact failure to lead to the high resistance, and then generates heat and causes the potential safety hazard. The car lasts the lapse, and electrode plate pushes up to the acceptor bottom this moment, and the acceptor pushes away the inner shell lapse, and the inner shell moves backward along the slide rail, and the spring compression that moves backward can guarantee like this that the acceptor contacts with the electrode plate all the time, avoids damaging the inner shell simultaneously. When the automobile drives away, the backward moving spring pushes the inner shell to reset, the receptor piece is separated from the electrode plate, and the torsion spring enables the electrode plate to reset. The electrode plate swings left and right, so that the protrusion of the electrode plate and the receiving part continuously rubs left and right, the oxide layer and the stain can be well rubbed off, and then a good contact effect can be guaranteed, the conductivity is guaranteed, and the potential safety hazard caused by large resistance due to poor local contact is avoided, and then the heat is generated. The head that charges can accurately correspond with the mouth that charges to avoid charging the head and mouthful contact failure with charging through the mode of friction, improved convenience and security, also can avoid forgetting the condition of drawing the rifle to take place simultaneously, use the charging device of former car to reform transform, improved the degree of matching and reduced installation cost.

Drawings

FIG. 1 is a schematic view of an embodiment of the present invention;

FIG. 2 is an enlarged view of a portion of embodiment A shown in FIG. 1;

FIG. 3 is a schematic cross-sectional view of embodiment B-B of FIG. 1;

fig. 4 is a schematic diagram of a modification of the original charging device according to the embodiment of the present invention.

In the figure: 1. an automobile; 2. charging piles; 3. a wall body; 4. pushing the plate; 5. a receiver member; 6. a housing; 7. an electrode plate; 8. an inner shell; 9. swinging a block; 10. a return spring; 11. a roller; 12. a slide rail; 13. a slider; 14. a limiting spring; 15. a driving wheel; 16. fixing the wheel; 17. a protrusion; 18. moving the spring backwards; 19. a wire; 20. a pasting plate; 21. a screw; 22. a threaded barrel; 23. a small hole; 24. a charging head; 25. a contact member; 26. a splint; 27. a hinged seat; 28. a telescopic air bag; 29. a charging gun housing; 30. a torsion spring.

Detailed Description

Embodiments of the invention are further described below with reference to the accompanying drawings:

as shown in fig. 1-4, the method for transforming and installing the external charging of the electric vehicle comprises an inner shell 8, two electrode modules are arranged in the inner shell 8, a motor module is connected with a charging pile 2 through a wire 19, a sliding block 13 is fixed at the lower end of the inner shell 8, the sliding block 13 is matched on a sliding rail 12, the sliding rail 12 is fixed on the ground through a bolt, a backward moving spring 18 is arranged between the inner shell 8 and a wall surface, the sliding rail 12 is positioned in the middle of the rear end of a parking space, the charging pile 2 is fixed on a wall body 3, the charging wire 19 of the charging pile 2 is cut off, and a charging gun outer shell 29 is removed to;

the electrode module comprises an electrode plate 7, a swinging block 9 is arranged behind the electrode plate 7, the swinging block 9 is hinged with the electrode plate 7 in the direction parallel to the ground, the swinging block 9 is hinged with the inner shell 8 in the direction vertical to the ground, a torsion spring is coaxially arranged at the hinged position of the electrode plate 7 and the swinging block 9, the two electrode plates are respectively connected with the charging pile 2 through a lead 19, and the electrode plate 7 is made of metal;

the tail of the electric automobile 1 is provided with two receptor parts 5, the receptor parts 5 are located at the middle position of the tail of the automobile 1, the receptor parts 5 are in a transverse groove shape, the length of the receptor parts is larger than the width of the electrode plates 7, two side walls of the receptor parts 5 are sunken towards opposite directions, two ends of the receptor parts are opened to be horn-shaped, each receptor part 5 is connected with a detached charging head 24 through a lead 19, the charging head 24 is inserted into a charging port of the automobile 1 and is connected with a contact member 25 in the charging port in a matching mode, and the height of each receptor part 5 corresponds to the height of the corresponding electrode plate 7.

The principle and the working process are as follows: the automobile 1 backs a car and puts in storage and gets into the parking stall, backing a car in-process receiver 5 can contact with electrode board 7, because receiver 5 is horizontal cell type, its length is greater than the width of

electrode board

7, 5 both sides walls of receiver are sunken to opposite direction, and its both ends are opened and are the loudspeaker form, even if the position of parking at every turn all has some differences when the garage-in like this automobile 1, but receiver 5 can both correspond with electrode board 7 on, and the opening of receiver 5 loudspeaker form can play the guide effect, can not take place the micro-change and can't realize the contact that charges because of automobile 1 tire atmospheric pressure, the height that hangs ageing and lead to takes place. The electrode plate 7 contacts with the receptor piece 5, and along with the continuous back-moving of the automobile 1, the electrode plate 7 is inserted into the receptor piece 5, meanwhile, the electrode plate 7 rubs with the bulge 17 of the receptor piece 5, so that an oxidation layer and dust are rubbed off, the conductivity is guaranteed, the large resistance caused by poor local contact is avoided, and the potential safety hazard caused by heating is avoided. The automobile 1 moves backwards continuously, the electrode plate 7 pushes the bottom of the receiving part 5 at the moment, the receiving part 5 pushes the inner shell 8 to move backwards, the inner shell 8 moves backwards along the sliding rail 12, and the backward moving spring 18 is compressed, so that the receiving part 5 can be always in contact with the electrode plate 7, and meanwhile, the inner shell 8 is prevented from being damaged. When the automobile 1 is driven away, the backward moving spring 18 pushes the inner shell 8 to reset, the receiving element 5 is separated from the electrode plate 7, and the torsion spring enables the electrode plate 7 to reset.

Including splint 26, two received 5 of the piece are fixed at the splint 26 back, splint 26 openly top sets up a screw thread section of thick bamboo 22, both ends cooperate screw rod 21 respectively in the screw thread section of thick bamboo 22, two screw rod 21 revolve to opposite, a screw rod 21 tip passes through the hinge and articulates on splint 26 is positive, another screw rod 21 passes through the hinge and fixes on the automobile body, splint 26 openly below is through hinge articulated seat 27, articulated seat 27 is fixed on the automobile body, splint 26 below rigidity like this, the interval of two screw rods 21 is adjusted through rotatory screw thread section of thick bamboo 22 to the top, and then make splint 26 and ground perpendicular, guarantee that received 5 of the piece and electrode plate 7 contact well.

The hinge and the hinge seat 27 are fixed on the vehicle body and the clamping plate 26 in an adhering mode, and the installation is convenient.

Set up a splint 26 again behind splint 26, fix the receiver 5 on the splint 26 at rear, set up flexible gasbag 28 between two splint 26, flexible gasbag 28 perisporium fold is folding, flexible gasbag 28 can only stretch out and draw back in the horizontal direction like this, all set up aperture 23 on flexible gasbag 28, rear splint 26, receiver 5, these apertures 23 are coaxial and communicate, electrode plate 7 can compress flexible gasbag 28 after touching end in receiver 5, the gas in the flexible gasbag 28 can be followed aperture 23 and is erupted and form the air current, the air current blows the internal surface of receiver 5, blow away rainwater etc. that probably adhere to above, avoid the short circuit hidden danger and guarantee electrically conductive effect.

8 outer cooperation shells 6 of inner shell, outer shell 6 is located 8 front sides of inner shell, set up two through-holes on the 6 lateral walls of outer shell, the position of two through-holes corresponds with the position of two electrode boards 7 respectively, gyro wheel 11 is installed respectively in 6 bottom four corners of outer shell, leave certain surplus between through-hole and the electrode board 7, receive the equal horizontal fixed push pedal 4 in the upper and lower position of an 5, push pedal 4 fixes on splint 26, push pedal 4's tip surpasses in the tip of receiving an 5, set up reset spring 10 between inner shell 8 and the outer shell 6, reset spring 10's elasticity is less than the elasticity of back spring 18, when reset spring 10 is in natural state, electrode board 7 tip surpasses in outer shell 6.

The principle and the working process are as follows: two through-holes play the guide effect, because plate electrode 7 is articulated with pendulum piece 9, the through-hole can avoid plate electrode 7 bending degree too big, leaves certain surplus between through-hole and the plate electrode 7, leaves the space for plate electrode 7 luffing motion. When the return spring 10 is in a natural state, the length of the end part of the electrode plate 7 exceeding the shell 6 is not more than 2 cm, so that most of the electrode plate 7 is hidden in the shell 6, and the short circuit caused by the lap joint of foreign objects is avoided. When the automobile 1 backs a car and enters a garage, the push plate 4 firstly contacts the outer shell 6 and pushes the outer shell 6 to move backwards, at the moment, the inner shell 8 is fixed, and the electrode plate 7 is exposed out of the side wall of the outer shell 6 and is in contact with the receiving piece 5 to be charged. The electrode plate 7 is wrapped by the inner shell 8 and the outer shell 6, and a good protection effect is achieved. Meanwhile, the push plate 4 can also play a role in shielding dust and rainwater.

The smooth side wall of one side wall of electrode plate 7 is equipped with evenly distributed protrusion 17, and smooth side corresponds sets up driving wheel 15, and driving wheel 15 fixes on spacing spring 14, and spacing spring 14 fixes on the 6 inner walls of shell, and protruding 17 side sets up fixed wheel 16, and fixed wheel 16 corresponds with protruding 17, and fixed wheel 16 installs on the 6 inner walls of shell, and driving wheel 15 pushes up on the electrode plate 7 lateral wall for protruding 17 on the electrode plate 7 pushes up on fixed wheel 16.

The principle and the working process are as follows: the shell 6 is at the back in-process that moves, relative movement takes place for plate electrode 7 and fixed wheel 16, plate electrode 7 can be by jack-up when arch 17 contacts with gyro wheel 11, arch 17 forces plate electrode 7 to reset through back driving wheel 15, and pendulum block 9 is articulated on perpendicular ground direction with inner shell 8, plate electrode 7 just realizes the horizontal hunting like this, plate electrode 7 just rubs about lasting with the protruding 17 department of receiving the piece 5 so, oxide layer and spot just can be fine by the friction fall, and then just can guarantee fine contact effect, guarantee electric conductivity, avoid local contact failure to lead to the high resistance, and then generate heat and cause the potential safety hazard.

The end of the electrode plate 7 is wedge-shaped, so that the electrode plate can be more conveniently inserted into the receptor part 5.

These and other changes can be made to the present apparatus with reference to the above detailed description. While the above detailed description describes certain embodiments of the invention and describes the best mode contemplated, no matter how detailed the above appears in text, the system can be practiced in many ways. The details of the local-based support device, although considerable variation in its implementation details is possible, are nevertheless contained within the device disclosed herein. As noted above, particular technical terms used in describing particular features or aspects of the present apparatus do not imply that the terms are redefined herein to be restricted to specific characteristics, features, or aspects of the system with which the terms are associated. In general, the terms used in the following claims should not be construed to limit the system to the specific embodiments disclosed in the specification, unless the above detailed description section explicitly defines such terms. Accordingly, the actual scope of the system encompasses not only the disclosed embodiments, but also all equivalent ways of practicing or implementing the apparatus covered by the claims.

Claims

1. The external charging transformation and installation method of the electric automobile is characterized by comprising the following steps of: the electric vehicle charging device comprises an inner shell (8), two electrode modules are arranged in the inner shell (8), a motor module is connected with a charging pile (2) through a wire (19), a sliding block (13) is fixed at the lower end of the inner shell (8), the sliding block (13) is matched on a sliding rail (12), the sliding rail (12) is fixed on the ground through a bolt, a backward moving spring (18) is arranged between the inner shell (8) and a wall surface, the sliding rail (12) is located in the middle of the rear end of a parking space, the charging pile (2) is fixed on a wall body (3), the charging wire (19) of the charging pile (2) is cut off, and a charging gun outer shell (29) is detached;

the electrode module comprises an electrode plate (7), a swinging block (9) is arranged behind the electrode plate (7), the swinging block (9) is hinged with the electrode plate (7) in the direction parallel to the ground, the swinging block (9) is hinged with the inner shell (8) in the direction vertical to the ground, a torsion spring is coaxially arranged at the hinged position of the electrode plate (7) and the swinging block (9), the two electrode plates are respectively connected with the charging pile (2) through leads (19), and the electrode plate (7) is made of metal;

two receptor parts (5) are arranged at the tail part of an electric automobile (1), the receptor parts (5) are positioned at the middle position of the tail part of the automobile (1), the receptor parts (5) are in a transverse groove shape, the length of the receptor parts is greater than the width of an electrode plate (7), two side walls of the receptor parts (5) are sunken towards opposite directions, two ends of the receptor parts are opened to be horn-shaped, each receptor part (5) is connected with a detached charging head (24) through a lead (19), the charging head (24) is inserted into a charging port of the automobile (1) and is in matched connection with a contact element (25) in the charging port, and the height of each receptor part (5) corresponds to the height of the corresponding electrode plate (7).

2. The improvement and installation method for external charging of the electric automobile according to claim 1, characterized in that: including splint (26), two received pieces (5) are fixed at splint (26) back, splint (26) are positive the top and are set up a screw thread section of thick bamboo (22), both ends cooperate screw rod (21) respectively in screw thread section of thick bamboo (22), two screw rods (21) are revolved to opposite, a screw rod (21) tip passes through the hinge and articulates on splint (26) are positive, another screw rod (21) pass through the hinge and fix on the automobile body, splint (26) are positive below and pass through hinge articulated seat (27), articulated seat (27) are fixed on the automobile body, splint (26) position is fixed down like this, the interval of two screw rods (21) is adjusted through rotatory screw thread section of thick bamboo (22) to the top, and then make splint (26) perpendicular with ground, guarantee that received pieces (5) and electrode board (7) contact well.

3. The improvement and installation method for external charging of the electric automobile according to claim 2, characterized in that: the hinge and the hinge seat (27) are fixed on the vehicle body and the clamping plate (26) in an adhering mode.

4. The improvement and installation method for external charging of the electric automobile according to claim 2, characterized in that: set up a splint (26) again behind splint (26), fix received piece (5) on splint (26) at the rear, set up flexible gasbag (28) between two splint (26), flexible gasbag (28) perisporium fold is folding, flexible gasbag (28) can only stretch out and draw back in the horizontal direction like this, all set up aperture (23) on flexible gasbag (28), rear splint (26), received piece (5), these apertures (23) are coaxial and communicate, electrode plate (7) can compress flexible gasbag (28) after touching end in received piece (5), gas in flexible gasbag (28) can be followed aperture (23) and erupted and form the air current, the air current blows the internal surface of received piece (5), blow away rainwater etc. that probably adhere to above, avoid the short circuit hidden danger and guarantee electrically conductive effect.

5. The improvement and installation method for external charging of the electric automobile according to claim 1, characterized in that: inner shell (8) outer cooperation shell (6), shell (6) are located inner shell (8) front side, set up two through-holes on shell (6) lateral wall, the position of two through-holes corresponds with the position of two plate electrodes (7) respectively, gyro wheel (11) are installed respectively to shell (6) bottom four corners, leave certain surplus between through-hole and plate electrode (7), equal level fixed push pedal (4) in the upper and lower position of two receiving piece (5), push pedal (4) are fixed on splint (26), the tip of push pedal (4) surpasses the tip of receiving piece (5), set up reset spring (10) between inner shell (8) and shell (6), the elasticity of reset spring (10) is less than the elasticity of backward shift spring (18), when reset spring (10) are in natural state, plate electrode (7) tip surpasses in shell (6).

6. The improvement and installation method for external charging of the electric automobile according to claim 5, wherein: the uniform distribution of arch (17) on the smooth lateral wall of a lateral wall of electrode plate (7), smooth side corresponds and sets up driving wheel (15), driving wheel (15) are fixed on spacing spring (14), spacing spring (14) are fixed on shell (6) inner wall, arch (17) side sets up fixed wheel (16), fixed wheel (16) correspond with arch (17), fixed wheel (16) are installed on shell (6) inner wall, driving wheel (15) top is on electrode plate (7) lateral wall, make arch (17) top on electrode plate (7) on fixed wheel (16).

7. The improvement and installation method for external charging of the electric automobile according to claim 1, characterized in that: the end part of the electrode plate (7) is wedge-shaped, so that the electrode plate can be more conveniently inserted into the receptor part (5).