CN110654254A - Electric vehicle charging device and charging system using same - Google Patents
Electric vehicle charging device and charging system using same Download PDFInfo
- Publication number
- CN110654254A CN110654254A CN201810714131.4A CN201810714131A CN110654254A CN 110654254 A CN110654254 A CN 110654254A CN 201810714131 A CN201810714131 A CN 201810714131A CN 110654254 A CN110654254 A CN 110654254A
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- charging
- pantograph
- plate
- bow
- universal joint
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
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- Electric Propulsion And Braking For Vehicles (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention relates to a charging device for an electric vehicle and a charging system using the charging device, wherein the charging system comprises a charging device arranged in a charging station and a current collecting device arranged on the vehicle, the current collecting device comprises a pantograph, the pantograph comprises a current collecting plate, the charging device comprises a charging pantograph and a scissor type lifting mechanism for driving the charging pantograph to lift so as to be in contact with and separate from the pantograph, the charging pantograph comprises a charging pantograph frame, the charging pantograph frame is provided with charging plates which are correspondingly in cross contact with the corresponding current collecting plate on the pantograph so as to perform charging operation, the charging plates are assembled on the charging pantograph frame through a universal joint with adjustable angles, and the middle part of the charging plates is provided with a universal joint connecting part. When the road surface inclines to lead to the receiving electrode plate to incline, the charging electrode plate correspondingly deflects under the reverse action of the receiving electrode plate, so that the charging electrode plate can be in reliable surface contact fit with the receiving electrode plate, and the normal charging process is ensured.
Description
Technical Field
The present invention relates to a charging device for an electric vehicle and a charging system using the same.
Background
Along with the popularization of new energy automobiles, the quantity of electric vehicles is increased, and especially in the field of urban public transport, more and more buses adopt electric buses. Because the electric automobile has limited electric quantity, the electric automobile needs to enter a charging station to supplement the electric quantity. At present, most of domestic electric automobiles use a charging gun to insert into a vehicle to realize the electrical connection between charging equipment and the vehicle, but the national standard of the charging gun is limited in the maximum working current of a quick charging interface, and in order to realize quick charging, part of electric vehicles use a charging bow capable of bearing larger current to establish electrical connection at the top of the vehicle.
The structure of the current comparatively commonly used charging device is as the structure disclosed in the chinese utility model patent of grant publication number CN207311147U, including installing the collection flow device on the vehicle, and set up the pantograph on scissors formula telescopic machanism, polar plate on the pantograph includes the pantograph positive plate, the pantograph negative plate, confirmation polar plate and pantograph protection ground plate are connected to the pantograph, collection flow device's polar plate includes the collection flow device positive plate, the collection flow device negative plate, collection flow device connects confirmation polar plate and collection flow device protection ground plate, corresponding polar plate on the pantograph and the corresponding polar plate on the collection flow device correspond cross arrangement, when needs charge, telescopic machanism orders about the pantograph and descends, corresponding polar plate on the pantograph and the collection flow device corresponds the conductive connection, carry out the operation of charging.
In general, as shown in fig. 5, a portion mounted on the vehicle 4 is defined as a pantograph 6, and a portion disposed on the charging station is defined as a charging pantograph 5, and a charging pad 501 on the charging pantograph is in cross contact with a pantograph pad 601 on the pantograph. During charging, the electric vehicle stops after running right below the charging bow, the charging bow descends, and the polar plate of the charging bow and the polar plate of the pantograph are close to each other and pressed together to realize electrical connection. The polar plate on the charging bow and the polar plate on the pantograph are both strip-shaped metal plates generally, and the two plates are in crossed contact when in use, so that the front and rear parking positions of the vehicle can have large-amplitude deviation.
However, actual road conditions and environment are often comparatively complicated, and the road surface that the vehicle stopped may be the slope, directly leads to the current-collecting surface of corresponding polar plate on the pantograph of vehicle not on horizontal position, and so, the polar plate on the charging bow and the polar plate on the pantograph have become line contact by theoretical face contact, and area of contact diminishes, and the contact resistance grow, and the energy aggravation of loss can aggravate the polar plate ageing moreover, still can appear one side polar plate contact when serious and can not go up the problem that leads to unable charging.
Disclosure of Invention
The invention aims to provide an electric vehicle charging device, which aims to solve the technical problem that the normal charging is influenced because the polar plates are easily in line contact when the road surface where a vehicle stops inclines in the prior art; meanwhile, the invention provides an electric vehicle charging system using the charging device.
In order to achieve the purpose, the technical scheme of the electric vehicle charging device provided by the invention is as follows: the utility model provides an electric vehicle charging device, including the bow that charges and the scissors formula elevating system that the drive bow that charges goes up and down in order to contact with the pantograph on the vehicle, break away from, the bow that charges is equipped with on the bow that charges including the bow frame that is used for corresponding the charging polar plate that the cross contact was in order to carry out the operation of charging with the corresponding current-collecting polar plate on the pantograph, the charging polar plate passes through the assembly of universal joint angularly adjustable and is in on the bow frame that charges, the middle part of charging polar plate is equipped with the universal joint connecting portion.
The universal joint is assembled on the charging bow frame in a floating mode along the vertical direction in a falling-proof mode, and the charging bow frame is provided with a charging buffering elastic piece which applies acting force for forcing the universal joint and the corresponding charging polar plate to move downwards to the universal joint.
And two ends of the charging polar plate are tilted upwards.
The universal joint is a ball cage universal joint or a hinge type universal joint.
The gimbal connection part of the charging pole plate is disposed at a middle position of an upper side of the charging pole plate.
The technical scheme of the electric vehicle charging system using the charging device provided by the invention is as follows: the utility model provides an electric vehicle charging system, is including being used for installing the charging device in the charging station and being used for installing the current-collecting device on the vehicle, and the current-collecting device includes the pantograph, and the pantograph includes the current-collecting plate, charging device including charge the bow and drive charge the bow go up and down with the contact of pantograph, scissors formula elevating system who breaks away from, the bow that charges is equipped with on the pantograph and is used for corresponding the charge polar plate that cross contact was in order to carry out the operation of charging with the corresponding current-collecting plate on the current-collecting bow, the charge polar plate passes through the assembly of universal joint angularly adjustable and is in on the pantograph, the middle part of charge polar plate is equipped with the universal joint connecting.
The universal joint is assembled on the charging bow frame in a floating mode along the vertical direction in a falling-proof mode, and the charging bow frame is provided with a charging buffering elastic piece which applies acting force for forcing the universal joint and the corresponding charging polar plate to move downwards to the universal joint.
The two ends of the charging polar plate are tilted upwards and/or the two ends of the power receiving polar plate are bent downwards.
The gimbal connection part of the charging pole plate is disposed at a middle position of an upper side of the charging pole plate.
The pantograph includes the pantograph frame that is used for fixed connection on the vehicle, the assembly is floated at the pantograph frame upside along upper and lower direction anticreep ground to the current-collecting plate, is equipped with between current-collecting plate and the pantograph frame and exerts the buffering elastic component that receives of its upward movement's effort to the current-collecting plate.
The invention has the beneficial effects that: in the charging system for the electric vehicle, the charging polar plate is assembled on the charging bow frame in an anti-falling mode through the universal joint, and when the current-collecting polar plate inclines due to the inclination of the road surface, the charging polar plate correspondingly deflects under the reverse action of the current-collecting polar plate, so that the charging polar plate and the current-collecting polar plate can be in reliable surface contact fit, a normal charging process is ensured, and the influence of the inclination of the road surface on normal charging is effectively avoided.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of an electric vehicle charging system provided by the present invention (charging electrode plates and receiving electrode plates are in corresponding cross contact);
FIG. 2 is a schematic structural diagram of an electric vehicle with a pantograph in contact engagement with a charging pantograph on a horizontal road surface;
FIG. 3 is a schematic structural diagram of an electric vehicle with a pantograph in contact engagement with a charging pantograph on a road surface with a left-right height difference;
FIG. 4 is a schematic structural diagram of an electric vehicle with a front-rear height difference road surface with a pantograph in contact fit with a charging pantograph;
fig. 5 is a schematic view of a charging bow and a pantograph in a conventional tilting contact manner.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings, but the present invention is not limited thereto.
As shown in fig. 1 to 4, the charging system in this embodiment includes a charging device and a power receiving device for corresponding cooperation.
The charging device comprises a charging bow 1 arranged on a support of a charging station, the charging bow comprises a charging bow frame 104, the charging bow frame 104 is of a frame structure, and the charging bow frame is formed by welding and assembling a plurality of frame rods which are vertically and horizontally staggered. The lower side of the charging bow facing the electric vehicle is equipped with four charging plates 102, respectively a charging positive plate, a charging negative plate, a charging connection confirmation plate and a charging protection grounding plate, which can be metal plates, alloy plates or carbon plates, to achieve normal conductive communication.
In fact, each charging plate 102 is assembled on the charging bow frame through the universal joint 101 with adjustable angle, and the middle part of the charging plate is provided with a universal joint connecting part, so that each charging plate can be adjusted by rotating through the universal joint, so that the charging plate can face the current-collecting plate, and the contact area between the charging plate and the current-collecting plate is ensured. In practice, the gimbal 101 is floatingly assembled on the charging yoke 104 in the up-down direction in a slip-proof manner, and a charging buffer elastic member 103 is provided on the charging yoke to apply an acting force to the gimbal to force the gimbal to move downward together with the corresponding charging plate, and the charging buffer elastic member 103 is embodied in a compressed spring structure.
Specifically, the universal joint in this embodiment adopts a rzeppa universal joint, has the advantage of relatively complete adjustment angle and direction, and can compensate position difference without dead angle by 360 degrees. Of course, in other embodiments, the universal joint may also adopt a hinge type universal joint structure, as long as the normal deflection of the power receiving electrode plate can be ensured.
Moreover, the universal joint connecting part of the charging pole plate is arranged at the middle position of the upper side of the charging pole plate, so that the rotating stability of the charging pole plate can be ensured.
In addition, in order to avoid accidental collision when the charging bow falls in place due to the fact that the vehicle does not move in place and facilitate butt joint of the charging pole plates and the current-collecting pole plates, two ends of each charging pole plate 102 are tilted upwards to form a sled structure. Of course, in other embodiments, the charging electrode plate and the receiving electrode plate may be designed to be flat structures with two straight ends, and an accidental bump may occur.
In this embodiment, the charging device further includes a scissor type lifting mechanism 10, the scissor type lifting mechanism includes a scissor frame 11 and a driving cylinder (not shown) for driving the scissor frame to extend and retract, a lower end of the scissor frame 11 is fixedly connected to the pantograph frame, the charging pantograph frame can be suspended above the electric vehicle by the scissor frame, and the pantograph frame can be driven to move up and down by the extending and retracting operation of the scissor type lifting mechanism.
The charging system comprises a charging device and a current collecting device, wherein the current collecting device is used for being installed on a vehicle and is used in a corresponding matching mode with the charging device, the current collecting device comprises a current collecting bow 2, the current collecting bow comprises a current collecting bow frame 3 fixedly arranged on the electric vehicle, the current collecting bow frame 3 can be a mounting plate structure and can also be a frame structure, and of course, the part on the electric vehicle can be used as the current collecting bow frame, and a current collecting electrode is directly installed at the corresponding position of the electric vehicle.
The pantograph further comprises four current collecting polar plates 201 arranged on the pantograph frame, wherein the four current collecting polar plates are respectively a current collecting positive polar plate, a current collecting negative polar plate, a current collecting connection confirmation polar plate and a current collecting protection grounding polar plate, and the polar plates can also adopt metal polar plates, alloy polar plates or carbon polar plates to ensure normal conductive communication. The receiving electrode plate 201 is used for corresponding conductive communication with the charging electrode plate 102, and in order to reduce the influence of parking accuracy and installation accuracy on conductive connection, the receiving electrode plate and the charging electrode plate are arranged in a crossed manner.
The current-collecting plate 201 is also assembled on the upper side of the pantograph frame in a vertically floating manner so as to be prevented from coming off, and a current-collecting buffer elastic member 202 that applies an acting force to urge the current-collecting plate to move upward is provided between the current-collecting plate and the pantograph frame, and the current-collecting buffer elastic member 202 may be a pressure spring. In addition, in order to improve stability, two compression springs are provided for each current-receiving electrode plate.
When the charging device is used specifically, the charging pole plate 102 and the power receiving pole plate 201 are both in a floating state through the charging buffering elastic piece 103 and the power receiving buffering elastic piece 202, so that reliable electric contact is guaranteed, and the pole plates are prevented from being damaged by hard contact.
In this embodiment, the number of the charging electrode plate and the number of the receiving electrode plate are four, and in other embodiments, the number of the charging electrode plate and the number of the receiving electrode plate may be two, three, or five, as long as normal charging can be ensured.
As shown in fig. 2, after the electric vehicle enters the charging position, if the vehicle is in the horizontal position, the current-receiving plate 102 on the vehicle will also be in the horizontal position, when the charging bow 1 descends, and under the action of gravity, the universal joint 101 keeps the vertical direction from deflecting, and when the charging plate 102 and the current-receiving plate 201 are in corresponding contact, the charging buffer elastic member and the current-receiving buffer elastic member cooperate to ensure that the charging plate and the current-receiving plate are in reliable surface contact with each other horizontally and sufficiently, and enter a normal charging process.
After the vehicle enters the charging position, if there is a height difference on the road surface in the left-right direction corresponding to the width of the vehicle, the vehicle will necessarily incline, and accordingly, a single current-receiving plate will also necessarily incline, as shown in fig. 3, when the road surface on the left side is slightly higher, not only the current-receiving plate on the left side will be higher than the current-receiving plate on the right side, but also each current-receiving plate 201 will also have a height in the left-right direction, at this time, when the charging bow 1 descends, the charging plate 102 will be in pressure contact with the current-receiving plate 201, and the inclined current-receiving plate 201 will necessarily drive the charging plate 102 to correspondingly deflect, and under the action of the universal joint 101, the charging plate can deflect to a position where the current-receiving plate reliably contacts with the surface, and is always in surface contact, and enters.
In fig. 3, the compression amount of the charging buffer elastic member corresponding to the left charging plate is greater than the compression amount of the charging buffer elastic member corresponding to the right charging plate.
Of course, when the road surface on the right is slightly higher, the inclination directions of the charging polar plate and the receiving polar plate are just opposite to those in fig. 3, but no matter the left side is high or the right side is high, the deflection of the corresponding charging polar plate can be realized through the universal joint, so that the charging polar plate and the receiving polar plate are always in reliable surface contact, and normal charging is ensured.
After the vehicle enters the charging position, if the road surface has a height difference in the front-back direction corresponding to the length of the vehicle, the vehicle will inevitably incline front-back, and accordingly, a single current-receiving plate 201 will also inevitably incline, as shown in fig. 4, when the road surface on the front side is slightly higher, not only the current-receiving plate 201 on the front side will be higher than the current-receiving plate on the rear side, but also each current-receiving plate itself will also have a height in the front-back direction, at this time, when the charging bow 1 descends, the inclined current-receiving plate inevitably drives the charging plate to correspondingly deflect in the process of abutting and pressing against the current-receiving plate, and under the action of the universal joint 101, the charging plate can normally deflect to a position where the current-receiving plate reliably contacts in a surface, and is always in a form of surface contact, and enters a normal charging process.
In fig. 4, the compression amount of the charge buffering elastic member corresponding to the front charging electrode plate is larger than that of the charge buffering elastic member corresponding to the rear charging electrode plate. The compression amount of the front side electric power receiving buffer elastic member is smaller than that of the rear side electric power receiving buffer elastic member for each electric power receiving plate.
Of course, when the road surface on the rear side is slightly higher, the inclination directions of the charging polar plate and the receiving polar plate are just opposite to the structure in fig. 4, but no matter the front side is higher or the rear side is higher, the corresponding charging polar plate can deflect through the universal joint, so that the charging polar plate and the receiving polar plate are always in reliable surface contact, and normal charging is ensured.
It should be noted that, two ends of the charging electrode plate are tilted upward, and two ends of the receiving electrode plate are in a straight structure. Of course, the two ends of the receiving electrode plate can be bent downward, and at this time, the two ends of the charging electrode plate can be tilted upward or have a straight structure.
To sum up, the charging polar plate 102 is assembled on the charging bow 104 through the universal joint 101 in an anti-dropping manner, and when the current-collecting polar plate inclines due to the inclination of the road surface, the charging polar plate 102 deflects correspondingly under the reverse action of the current-collecting polar plate 201, so that the charging polar plate can be in reliable surface contact cooperation with the current-collecting polar plate, the normal charging process is ensured, and the influence of the inclination of the road surface on the normal current collection is effectively avoided. And the charging polar plate and the current-collecting polar plate are respectively assembled on the corresponding bow brackets in a floating mode through the corresponding buffering elastic pieces, so that reliable contact is guaranteed, elastic contact can be achieved, and accidental damage caused by rigid jacking is avoided.
In this embodiment, the universal joint is connected in the intermediate position department of corresponding polar plate that charges, can guarantee like this that the polar plate that charges deflects the action stable, makes things convenient for the bow that charges to go up and down to go on going up and down like this. In other embodiments, the universal joint may be connected to one end of the charging pole plate according to actual conditions, and at this time, the charging bow may swing while being biased to one side of the pantograph as long as the normal contact and separation between the charging bow and the pantograph are ensured.
The present invention further provides an embodiment of an electric vehicle charging apparatus, the charging apparatus in this embodiment has the same structure as the charging apparatus in the electric vehicle charging system, and details thereof are not repeated herein.
Claims (10)
1. The utility model provides an electric vehicle charging device, including the bow that charges and the scissors formula elevating system that the drive bow that charges goes up and down in order to contact with the pantograph on the vehicle, break away from, the bow that charges is equipped with on the bow that charges including the bow frame that is used for corresponding the charging polar plate of cross contact in order to carry out the operation of charging with the corresponding polar plate on the pantograph, its characterized in that: the charging polar plate is assembled on the charging bow frame through a universal joint with an adjustable angle, and the middle part of the charging polar plate is provided with a universal joint connecting part.
2. The electric vehicle charging apparatus according to claim 1, characterized in that: the universal joint is assembled on the charging bow frame in a floating mode along the vertical direction in a falling-proof mode, and the charging bow frame is provided with a charging buffering elastic piece which applies acting force for forcing the universal joint and the corresponding charging polar plate to move downwards to the universal joint.
3. The electric vehicle charging apparatus according to claim 1 or 2, characterized in that: and two ends of the charging polar plate are tilted upwards.
4. The electric vehicle charging apparatus according to claim 1 or 2, characterized in that: the universal joint is a ball cage universal joint or a hinge type universal joint.
5. The electric vehicle charging apparatus according to claim 1 or 2, characterized in that: the gimbal connection part of the charging pole plate is disposed at a middle position of an upper side of the charging pole plate.
6. The utility model provides an electric vehicle charging system, is including being used for installing the charging device in the charging station and being used for installing the current-collecting device on the vehicle, and the current-collecting device includes the pantograph, and the pantograph includes the collector plate, charging device including charge the bow and drive charge the bow go up and down with the contact of pantograph, scissors formula elevating system who breaks away from, the bow that charges is including the bow frame that charges, be equipped with on the bow frame that charges and be used for corresponding the charge plate of cross contact in order to carry out the operation of charging with the corresponding collector plate on the pantograph, its characterized in that: the charging polar plate is assembled on the charging bow frame through a universal joint with an adjustable angle, and the middle part of the charging polar plate is provided with a universal joint connecting part.
7. The electric vehicle charging system according to claim 6, characterized in that: the universal joint is assembled on the charging bow frame in a floating mode along the vertical direction in a falling-proof mode, and the charging bow frame is provided with a charging buffering elastic piece which applies acting force for forcing the universal joint and the corresponding charging polar plate to move downwards to the universal joint.
8. The electric vehicle charging system according to claim 6 or 7, characterized in that: the two ends of the charging polar plate are tilted upwards and/or the two ends of the power receiving polar plate are bent downwards.
9. The electric vehicle charging system according to claim 6 or 7, characterized in that: the gimbal connection part of the charging pole plate is disposed at a middle position of an upper side of the charging pole plate.
10. The electric vehicle charging system according to claim 6 or 7, characterized in that: the pantograph includes the pantograph frame that is used for fixed connection on the vehicle, the assembly is floated at the pantograph frame upside along upper and lower direction anticreep ground to the current-collecting plate, is equipped with between current-collecting plate and the pantograph frame and exerts the buffering elastic component that receives of its upward movement's effort to the current-collecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714131.4A CN110654254A (en) | 2018-06-29 | 2018-06-29 | Electric vehicle charging device and charging system using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810714131.4A CN110654254A (en) | 2018-06-29 | 2018-06-29 | Electric vehicle charging device and charging system using same |
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| CN110654254A true CN110654254A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810714131.4A Pending CN110654254A (en) | 2018-06-29 | 2018-06-29 | Electric vehicle charging device and charging system using same |
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| CN (1) | CN110654254A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113459814A (en) * | 2020-03-31 | 2021-10-01 | 比亚迪股份有限公司 | Charging bow and vehicle charging system with same |
| CN115158070A (en) * | 2022-07-26 | 2022-10-11 | 奕充机器人(苏州)有限公司 | Automatic charging device for automobile |
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| CN208602337U (en) * | 2018-06-29 | 2019-03-15 | 郑州宇通客车股份有限公司 | Charging device for electric vehicle and the charging system for using the charging unit |
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| US3830990A (en) * | 1972-12-20 | 1974-08-20 | Gen Electric | Pantograph wearing strip support |
| EP0222128A2 (en) * | 1985-10-16 | 1987-05-20 | Dornier Gmbh | Current-collecting device |
| JPH06315205A (en) * | 1993-04-26 | 1994-11-08 | Hitachi Cable Ltd | Contact conduction unit charging mobile battery |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113459814A (en) * | 2020-03-31 | 2021-10-01 | 比亚迪股份有限公司 | Charging bow and vehicle charging system with same |
| CN115158070A (en) * | 2022-07-26 | 2022-10-11 | 奕充机器人(苏州)有限公司 | Automatic charging device for automobile |
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