Automatic charging device for charging unmanned electric vehicle

Abstract

The invention discloses an automatic charging device for charging an unmanned electric vehicle, and relates to the field of unmanned electric vehicles, the automatic charging device comprises a charging plug power assembly and a charging plug assembly arranged at the upper end of the charging plug power assembly, and the unmanned vehicle is correspondingly arranged on the outer side of the charging plug assembly; an automobile charging port is formed in the surface of the pilotless automobile, the automobile charging port and the charging plug assembly are correspondingly arranged, and the charging plug power assembly comprises a mounting base. The automatic charging device for charging the unmanned electric vehicle is low in investment cost, easy to maintain, capable of being conveniently popularized and applied to most scenes, the provided plug can adapt to adjustment of multiple degrees of freedom, when an angle error exists, the error angle can be automatically adjusted, and the automatic charging device is convenient to use. A standard national standard port of an alternating current / direct current port can be obtained only by inserting the adapter into an automobile socket, so that the adapter can be compatible with an external charging pile for charging.

Description

Technical Field

[0001] The invention relates to the technical field of driverless electric vehicles, and in particular to an automatic charging device for charging driverless electric vehicles. Background Art

[0002] With the rapid development of new energy in the future, driverless electric vehicles will also develop accordingly. Many cities in China have carried out demonstration applications of driverless vehicles. The demand for charging piles that provide energy for electric vehicles is also increasing rapidly. Most electric vehicles on the market are charged by hand, and even the automatic docking charging device is too complicated or difficult to use. Especially when the driverless car needs manual intervention for charging in an emergency, it is more difficult to charge because the connector does not match the existing national standard connector. This has brought certain difficulties to the popularization of the unmanned process of automatic charging docking for driverless vehicles.

[0003] In the existing technology, the investment cost is too high, maintenance is difficult, and it is not easy to promote and implement. It is only suitable for use in a small number of specific scenarios. The plug provided by it only considers the displacement freedom in three directions, and does not consider the angle error between the gun head and the car socket. When there is an angle error, this method is very difficult to operate, and there is a risk of damaging the socket. It does not consider the use scenario of its connector converted into an AC or DC national standard gun head;

[0004] In order to overcome the above shortcomings, a Chinese patent of the prior art (Announcement No. CN212071944U) discloses an automatic gun charging manipulator, including a fixed base plate, a first hydraulic rod and an infrared sensor, bolts are arranged on both sides of the upper end of the fixed base plate, and a fixed seat is arranged at the center position of the upper end of the fixed base plate, a motor is installed inside the fixed seat, and a turntable is arranged on the upper end of the motor, a base arm is fixed on the upper end of the turntable, and a first rotating shaft fixing block is arranged on one side of the base arm. The automatic gun charging manipulator is provided with a threaded knob, which is movably connected to the fixed rotating sleeve, and symmetrically distributed clamping blocks, in combination with the anti-skid layer, can ensure the stability and firmness of the charging gun fixed to the inner side of the fixed cylinder, avoiding the situation where the charging gun affects the accuracy of the gun insertion, and at the same time, by adjusting the threaded knob to change the position of the clamping block, it can be fixed according to the actual size of the charging gun, thereby improving the actual use range of the charging manipulator;

[0005] In order to overcome the above-mentioned shortcomings, the Chinese patent of the prior art (Announcement No. CN207052860U) discloses an adjustment device of a charging plug, a charging plug device and an electric vehicle, two longitudinal adjustment mechanisms arranged opposite to each other in the longitudinal direction; a transverse adjustment mechanism arranged in the transverse direction, and the two ends of the transverse adjustment mechanism are respectively fixedly connected to a longitudinal adjustment mechanism; driven by the longitudinal adjustment mechanism, the transverse adjustment mechanism can move in the longitudinal direction; a push rod mechanism, the first end of the push rod mechanism is fixedly arranged on the transverse adjustment mechanism; driven by the transverse adjustment mechanism, the push rod mechanism can move in the transverse direction; wherein, the charging plug is fixedly arranged at the second end of the push rod mechanism, and the second end is opposite to the first end; a distance measuring sensor is arranged at the push rod mechanism, and the direction of the sensing end of the distance measuring sensor is the same as that of the charging plug, so as to realize the automatic plugging process, and the overall device structure is simple and reliable;

[0006] In order to overcome the above-mentioned deficiencies, a Chinese patent of the prior art (publication number CN214775468U) discloses a connector assembly, a charging pile and a vehicle. The connector assembly includes a plug on the charging pile and a socket in the vehicle that is compatible with the plug. At least one of the plug and the socket is a floating connector. When the connector assemblies are tilted against each other, the floating seat can swing relative to the fixed seat to automatically correct the inclination between the plug and the socket. The spring applies elastic force to the floating seat along the plug-in direction of the floating connector to ensure a good contact relationship between the plug and the socket. The flexible conductive part is connected to the conductive part of the floating seat. When the floating seat moves, it adapts to the position and posture changes of the conductive part of the floating seat through its own deformation, thereby ensuring smooth transmission of the electrical line between the plug and the socket. Since the plug and socket are floating connectors, the technical problem of short life of the plug and socket caused by the poor adaptability of the plug and socket used in the current vehicle charging system to position deviations is solved;

[0007] Although the existing technology can overcome the above-mentioned shortcomings, there are still other problems in its operation, such as: in normal use, after the driverless car parks in place through the guide line of the road parking space planning, when charging, the corresponding control strategy is used to control the automatic gun insertion device to start and start plugging. After the plugging is in place, the end plug is equipped with a detection position switch, and the control gun insertion device is used to stop. In this process, the gun insertion device considers the relative angle deviation between the car and the socket, so the plug part is designed with a certain angle floating. Summary of the invention

[0008] The purpose of the present invention is to provide an automatic charging device for unmanned electric vehicles to solve the problem in the above background technology that when the unmanned vehicle is parked in place through the guide line of the road parking space planning during normal use, the automatic gun insertion device is controlled to start and start plugging through the corresponding control strategy when charging. After the plugging is in place, the end plug is equipped with a detection position switch, and the gun insertion device is used to stop. In this process, the gun insertion device takes into account the deviation of the relative angle between the car and the socket, so the plug part is designed with a certain angle floating to cover the parking angle deviation problem.

[0009] To achieve the above-mentioned object, the present invention provides the following technical solutions: an automatic charging device for charging an unmanned electric vehicle, comprising a charging plug power assembly and a charging plug assembly arranged on the upper end of the charging plug power assembly, and an unmanned vehicle is arranged correspondingly on the outer side of the charging plug assembly, and a vehicle charging port is arranged on the surface of the unmanned vehicle, and the vehicle charging port is arranged correspondingly to the charging plug assembly;

[0010] The charging plug power assembly includes a mounting base, and a linear motion module is arranged at the upper end of the mounting base, and a plug bracket is connected to the upper end of the linear motion module, and the left side of the plug bracket is connected to the plug socket, and a cable is arranged inside the plug socket;

[0011] The car charging port includes a plug socket, and a car charging port window is arranged on the outside of the plug socket, and a socket copper electrode block is arranged inside the plug socket, and a center expansion pin hole is arranged at the middle end of the socket copper electrode block, and a charging adapter assembly is arranged on the outside of the car charging port.

[0012] Furthermore, a plug copper electrode block is arranged inside the left side of the plug socket, and a telescopic probe is arranged on the surface of the plug copper electrode block.

[0013] Furthermore, a rotating rod is rotatably installed inside the plug socket, and a spacer sleeve is provided on the surface of the rotating rod, and left and right supporting compression springs are provided on the outside of the spacer sleeve, and left and right plug tension springs are provided on the outside of the plug socket.

[0014] Furthermore, the charging adapter assembly is provided with a national standard AC port, and a national standard DC port is provided on the outer side of the national standard AC port.

[0015] Furthermore, the rear end of the charging adapter assembly is provided with interface pins, and the interface pins are evenly distributed at the rear end of the charging adapter assembly, and plug pads are provided at the upper and lower ends of the rear side of the charging adapter assembly.

[0016] Furthermore, a self-protection mechanism is provided on the front and rear sides of the plug socket, and the self-protection mechanism includes a fixing plate installed at the front and rear ends of the plug socket, and a moving rod is installed through the upper and lower ends of the fixing plate, and a contact plate is fixedly installed on the left side of the moving rod, and a cushion layer is provided on the left side of the contact plate.

[0017] Furthermore, a return spring is sleeved on the surface of the moving rod, and the inner and outer sides of the return spring are arranged between the contact plate and the fixed plate.

[0018] Furthermore, damping rods are installed through the upper and lower ends of the fixing plate, and the output end of the damping rod is arranged on the outside of the contact plate.

[0019] Furthermore, a jet port is fixedly mounted on the upper end of the plug socket, and a lower output end of the jet port is aligned with the interior of the plug socket, and a connecting pipe is connected to the outside of the jet port, and an elastic airbag is connected to the left side of the connecting pipe, and the outer side of the elastic airbag is fixedly mounted on a fixed plate.

[0020] Furthermore, the elastic airbag and the contact plate form a pressed structure, and a one-way air inlet is installed through the outer side of the elastic airbag, and a one-way valve is arranged inside the one-way air inlet.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Low investment cost, simple maintenance, easy promotion and implementation, suitable for most scenarios. The plug it provides can adapt to the adjustment of multiple degrees of freedom, and can automatically adjust the error angle when there is an angle error;

[0023] Furthermore, you only need to plug the adapter into the car socket to get a standard national standard AC and DC port, which is compatible with external charging pile charging.

[0024] 2. A component is provided to protect the vehicle body when the plug socket is charging. When in use, as the plug socket moves to correspond to the vehicle charging port on the driverless car, the contact plate and the cushion layer first contact the vehicle shell. As the contact plate contacts, the contact plate moves outward through the setting of the moving rod and squeezes the return spring, thereby achieving a buffering protection effect to prevent the plug socket from damaging the vehicle shell due to excessive impact force. When the return spring buffers through its own elastic force, a shock-absorbing protection effect is achieved to prevent the vehicle body from being damaged by excessive pressure, thereby providing a protective effect;

[0025] Furthermore, when the contact plate moves outward, it will contact the elastic airbag and squeeze the elastic airbag. The elastic airbag squeezes the air inside and transmits it to the jet port through the connecting pipe. The jet port is aimed at the parts inside the plug socket to remove impurities, which can avoid the impurities from affecting the charging effect and prevent the impurities from damaging the charging port during charging. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of the automatic gun insertion device of the present invention;

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure of the automatic gun insertion device of the present invention;

[0028] Figure 3 It is a schematic diagram of the three-dimensional structure of the plug socket of the present invention;

[0029] Figure 4 This is a schematic diagram of the structure of the automobile charging port of the present invention;

[0030] Figure 5 This is a front structural schematic diagram of the electric adapter assembly of the present invention;

[0031] Figure 6 This is a schematic diagram of the rear view of the electric adapter assembly of the present invention;

[0032] Figure 7 It is a schematic diagram of the three-dimensional structure of the fixing plate of the present invention;

[0033] Figure 8 It is a rear perspective structural schematic diagram of the fixing plate of the present invention;

[0034] Fig. 9 It is a schematic diagram of the three-dimensional structure of the elastic airbag of the present invention in a side cross-sectional view;

[0035] Fig.10 It is a schematic diagram of the three-dimensional structure of the air jet of the present invention.

[0036] In the figure: 1. Charging plug power assembly; 2. Charging plug assembly; 3. Car charging port; 4. Unmanned vehicle; 21. Mounting base; 22. Cable; 23. Plug bracket; 24. Linear motion module; 25. Plug copper electrode block; 26. Left and right support compression springs; 27. Rotating rod; 28. Spacer; 29. ​​Telescopic probe; 30. Plug socket; 31. Plug left and right tension springs; 32. Plug female socket; 33. Female socket copper electrode block; 34. Center expansion pin hole; 35. Car charging port window shaker; 41. National standard AC port; 42. National standard DC port; 43. Interface pin; 44. Plug cushion; 5. Fixed plate; 51. Moving rod; 52. Contact plate; 53. Cushion layer; 54. Reset spring; 55. Damping rod; 6. Jet nozzle; 61. Connecting pipe; 62. Elastic airbag; 63. One-way air inlet. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Embodiment 1: Figure 1-Figure 6 The technical solution shown is an automatic charging device for unmanned electric vehicles. In order to solve the problem that the plug part is designed to float at a certain angle, the following is disclosed: a charging plug power assembly 1 and a charging plug assembly 2 arranged at the upper end of the charging plug power assembly 1, and an unmanned vehicle 4 is arranged correspondingly on the outer side of the charging plug assembly 2, and a car charging port 3 is arranged on the surface of the unmanned vehicle 4, and the car charging port 3 is arranged correspondingly to the charging plug assembly 2, the charging plug power assembly 1 includes a mounting base 21, and a linear motion module 24 is arranged on the upper end of the mounting base 21, and a plug bracket 23 is connected to the upper end of the linear motion module 24, and the left side of the plug bracket 23 is connected to a plug socket 30, and a cable 22 is arranged inside the plug socket 30, the car charging port 3 includes a plug female socket 32, and a car charging port window 35 is arranged on the outer side of the plug female socket 32, and A female copper electrode block 33 is arranged inside the female plug socket 32, and a central expansion pin hole 34 is arranged at the middle end of the female copper electrode block 33, a charging adapter assembly is arranged on the outside of the car charging port 3, a plug copper electrode block 25 is arranged inside the left side of the plug socket 30, and a telescopic probe 29 is arranged on the surface of the plug copper electrode block 25, a rotating rod 27 is rotatably installed inside the plug socket 30, and a spacer sleeve 28 is arranged on the surface of the rotating rod 27, and left and right supporting compression springs 26 are arranged on the outside of the spacer sleeve 28, and left and right plug tension springs 31 are arranged on the outside of the plug socket 30, a national standard AC port 41 is arranged on the charging adapter assembly, and a national standard DC port 42 is arranged on the outside of the national standard AC port 41, an interface pin 43 is arranged at the rear end of the charging adapter assembly, and the interface pins 43 are evenly distributed at the rear end of the charging adapter assembly, and plug cushion seats 44 are arranged at the upper and lower ends of the rear side of the charging adapter assembly;

[0039] The specific operations of the automatic charging process and manual charging are implemented as follows; when the unmanned vehicle 4 is parked and the window 35 of the vehicle charging port is rolled down, the control system issues a charging command; the linear motion module 24 drives the charging plug assembly 2 to plug forward; when the plug is plugged in place, a pair of telescopic probes 29 on the plug copper electrode block 25 sends a docking signal, and the linear motion module 24 continues to drive the charging plug assembly 2 to move forward for a stroke to ensure that the plug copper electrode block 25 and the female copper electrode block 33 have a certain contact pressure, which is provided by the left and right supporting compression springs 26. Even when the unmanned vehicle 4 and the charging plug assembly 2 are at a certain angle, the charging plug assembly 2 will produce an adaptive angle adjustment and a rotational motion. This rotational motion is mainly provided by the preload force of the left and right tension springs 31 of the plug. When the motion stroke is over, the system starts to issue charging instructions, the car starts charging, and the cable 22 starts to supply power for charging; after charging is over, the system issues an end charging instruction, at which time the linear motion module 24 is controlled to drive the charging plug assembly 2 to retract backwards, and after touching the origin stroke switch, the linear motion module 24 stops moving, and thus the complete process of automatic plug-in charging is completed. When the driverless car 4 is manually charged outside, it is only necessary to roll down the car charging port window 35 and directly insert the charging adapter assembly into the car charging port 3. The pin definition on the conversion head is consistent with the national standard pin definition. In addition, the conversion head plug seat 44 is designed with fool-proof and guide structures to facilitate user operation. After the insertion is completed, a universal national standard docking interface can be obtained, and the external national standard pile can charge the car.

[0040] Embodiment 2: Figure 1-Figure 10 The technical solution shown in the embodiment is based on the first embodiment. In order to solve the problem that the electric vehicle is easily damaged during charging, the following is disclosed: a self-protection mechanism is provided on the front and rear sides of the plug socket 30, and the self-protection mechanism includes a fixing plate 5 installed on the front and rear ends of the plug socket 30, and a moving rod 51 is installed through the upper and lower ends of the fixing plate 5, and a contact plate 52 is fixedly installed on the left side of the moving rod 51, and a cushion layer 53 is provided on the left side of the contact plate 52, and a return spring 54 is sleeved on the surface of the moving rod 51, and the inner and outer sides of the return spring 54 are arranged between the contact plate 52 and the fixing plate 5, and the fixing plate The upper and lower ends of the plug socket 30 are penetrated with damping rods 55, and the output end of the damping rod 55 is arranged on the outside of the contact plate 52, the upper end of the plug socket 30 is fixedly installed with an air jet 6, and the lower end output end of the air jet 6 is aligned with the inside of the plug socket 30, and the outside of the air jet 6 is connected with a connecting pipe 61, and the left side of the connecting pipe 61 is connected with an elastic air bag 62, the outside of the elastic air bag 62 is fixedly installed on the fixing plate 5, the elastic air bag 62 and the contact plate 52 form a pressed structure, and the outside of the elastic air bag 62 is penetrated with a one-way air inlet 63, and a one-way valve is arranged inside the one-way air inlet 63;

[0041] A component is provided to protect the vehicle body when the plug socket 30 is charging. When in use, as the plug socket 30 moves to correspond to the vehicle charging port 3 on the driverless car 4, the contact plate 52 and the cushion layer 53 first contact the vehicle shell. As the contact plate 52 contacts, the contact plate 52 moves outward through the setting of the moving rod 51 and squeezes the return spring 54, thereby achieving a buffering protection effect to prevent the plug socket 30 from damaging the vehicle shell due to excessive impact force. When the return spring 54 is buffered by its own elastic force, the damping rod 55 is set to release the reciprocating rebound force of the return spring 54, thereby preventing the return spring 54 from reciprocating vibration. , achieving the effect of shock absorption protection, preventing the car body from being damaged by excessive pressure, and providing protection. At the same time, when the contact plate 52 moves outward, it will contact the elastic airbag 62 and squeeze the elastic airbag 62. The elastic airbag 62 squeezes the air inside and delivers it to the air jet 6 through the connecting pipe 61. The air jet 6 is aimed at the parts inside the plug socket 30 to remove impurities. On the contrary, when the charging plug assembly 2 is recovered, the contact plate 52 is reset under the action of the reset spring 54, and the elastic airbag 62 is reset by its own elastic force. At the same time, air is inhaled through the one-way valve inside the one-way air inlet 63 and re-inflated for use, which can avoid impurities affecting the charging effect and prevent impurities from damaging the charging port during charging.

[0042] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automatic charging device for an unmanned electric vehicle, comprising a charging plug power assembly (1) and a charging plug assembly (2) arranged at the upper end of the charging plug power assembly (1), wherein an unmanned vehicle (4) is arranged correspondingly on the outer side of the charging plug assembly (2), and a vehicle charging port (3) is arranged on the surface of the unmanned vehicle (4), and the vehicle charging port (3) is arranged correspondingly to the charging plug assembly (2); Features: The charging plug power assembly (1) comprises a mounting base (21), and a linear motion module (24) and a plug bracket (23) are arranged at the upper end of the mounting base (21); The left side of the plug bracket (23) is connected to the plug socket (30), and the plug socket (30) is provided with a cable (22) inside; The vehicle charging port (3) comprises a plug socket (32), a vehicle charging port window (35) is arranged on the outer side of the plug socket (32), a socket copper electrode block (33) is arranged inside the plug socket (32), a central expansion pin hole (34) is arranged at the middle end of the socket copper electrode block (33), and a charging adapter assembly is arranged on the outer side of the vehicle charging port (3).

2. The automatic charging device for unmanned electric vehicles according to claim 1, characterized in that: A plug copper electrode block (25) is arranged inside the left side of the plug socket (30), and a telescopic probe (29) is arranged on the surface of the plug copper electrode block (25).

3. The automatic charging device for unmanned electric vehicles according to claim 2 is characterized in that: A rotating rod (27) is rotatably mounted inside the plug socket (30), and a spacer sleeve (28) is arranged on the surface of the rotating rod (27), and left and right supporting compression springs (26) are arranged on the outside of the spacer sleeve (28), and left and right plug tension springs (31) are arranged on the outside of the plug socket (30).

4. The automatic charging device for unmanned electric vehicles according to claim 1 is characterized in that: The charging adapter assembly is provided with a national standard AC port (41), and a national standard DC port (42) is provided outside the national standard AC port (41).

5. The automatic charging device for unmanned electric vehicles according to claim 4 is characterized in that: The rear end of the charging adapter assembly is provided with interface pins (43), and the interface pins (43) are evenly distributed at the rear end of the charging adapter assembly, and plug seats (44) are provided at the upper and lower ends of the rear side of the charging adapter assembly.

6. The automatic charging device for unmanned electric vehicles according to claim 1 is characterized in that: The plug socket (30) is provided with a self-protection mechanism on both the front and rear sides, and the self-protection mechanism comprises a fixing plate (5) installed at the front and rear ends of the plug socket (30), and a moving rod (51) is installed through the upper and lower ends of the fixing plate (5), and a contact plate (52) is fixedly installed on the left side of the moving rod (51), and a cushion layer (53) is provided on the left side of the contact plate (52).

7. The automatic charging device for unmanned electric vehicles according to claim 6 is characterized in that: A return spring (54) is sleeved on the surface of the moving rod (51), and the inner and outer sides of the return spring (54) are arranged between the contact plate (52) and the fixed plate (5).

8. The automatic charging device for unmanned electric vehicles according to claim 7, characterized in that: Damping rods (55) are installed through the upper and lower ends of the fixing plate (5), and the output end of the damping rod (55) is arranged on the outside of the contact plate (52).

9. The automatic charging device for unmanned electric vehicles according to claim 8, characterized in that: The upper end of the plug socket (30) is fixedly mounted with an air jet (6), and the lower output end of the air jet (6) is aligned with the interior of the plug socket (30), and the outer side of the air jet (6) is connected to a connecting pipe (61), and the left side of the connecting pipe (61) is connected to an elastic air bag (62), and the outer side of the elastic air bag (62) is fixedly mounted on the fixing plate (5).

10. The automatic charging device for unmanned electric vehicles according to claim 9, characterized in that: The elastic airbag (62) and the contact plate (52) form a pressed structure, and a one-way air inlet (63) is installed through the outer side of the elastic airbag (62), and a one-way valve is arranged inside the one-way air inlet (63).

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