CN204856221U - Electric automobile is wireless to charge transmission and receives automatic alignment system - Google Patents
Electric automobile is wireless to charge transmission and receives automatic alignment system Download PDFInfo
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- CN204856221U CN204856221U CN201520534396.8U CN201520534396U CN204856221U CN 204856221 U CN204856221 U CN 204856221U CN 201520534396 U CN201520534396 U CN 201520534396U CN 204856221 U CN204856221 U CN 204856221U
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Abstract
The utility model discloses an electric automobile is wireless to charge transmission and receives automatic alignment system, it includes wireless receiving device and wireless transmitting device, wireless receiving device and wireless transmitting device are set up the communication and are connected in the certain distance, this automatic alignment system still includes image recognition automatic positioning device and motor positioning drive device, motor positioning drive device locates the electric automobile bottom, just the wireless receiving device is located on this motor positioning drive device to the realization is all around moved under motor positioning drive device's drive, image recognition automatic positioning device and motor positioning drive device set up wiredly or wireless connection, the wireless transmitting device position image that this image recognition automatic positioning device gathered including the acquisition unit that gathers wireless transmitting device position image, to acquisition unit carry on assay the analytic unit, carry out the automatic positioning device 1 that controls according to the automatic positioning device 0 of analytic unit, this motor of automatic positioning device 1 drive positioning drive device move.
Description
Technical field
The utility model relates to a kind of wireless charging system used for electric vehicle, is specifically related to the transmitter module in wireless charging system for electric automobile and the self-aligning system of receiver module.
Background technology
Electric automobile, with its fuel-economizing, environmental protection, high efficiency advantage, is generally believed it is 21st century important clean traffic instrument by countries in the world scientist and industry member.Wherein, electric automobile charging station and charging network are the important infrastructures of electric automobile scale and industrialized development.
In existing electric automobile charging station, when adopting the charging electric vehicle of wireless charging mode, need to aim at being arranged in wireless receiving plate bottom car with the wireless transmit plate being arranged in ground, the maximization of guarantee charge efficiency.At present, existing alignment so is that driver controls automobile and locates aligning according to the witness marker of charging station, or according to the positioning instruction moving automobile of vehicle electronics indication mechanism or control charging dash receiver and aim at wireless transmit plate.Adopt which kind of mode above-mentioned to be all need the manual control of driver to realize the aligning of wireless transmission dash receiver, this process is poor efficiency slowly.
For this reason, one section of application number is the patent of invention of 201110276928.9, discloses a kind of Powerful electromagnetic coupling type wireless electrical vehicle charging device, it comprises mains supply, primary rectifier wave filter, primary converter, the primary coil of separable electromagnetic coupler, movable primary coil support, separable electromagnetic coupler secondary coil, poly-magnetic core, movable secondary coil support, secondary commutation wave filter, charge controller, accumulator, electric automobile.Industrial-frequency alternating current is input to primary rectifier wave filter, from the direct current of primary rectifier wave filter stable output, the high-frequency alternating current after high-frequency inversion conversion is carried out through primary converter, this alternating current is delivered to the primary coil of separable electromagnetic coupler, poly-magnetic core is had in the primary coil of separable electromagnetic coupler, the primary coil being separated electromagnetic coupler can be moved up and down to be moved up and down by movable secondary coil support with separable electromagnetic coupler secondary coil by movable primary coil support and strong electromagnetic occurs be coupled, realize the Energy Transfer of high-magnetic-density like this.What this patent adopted is the primary coil device and secondary coil device that can move up and down respectively, at moving automobile, the secondary coil on car is just in time registered to after above primary coil, stream oriented device moves up and down and presses close to realize to provide the object of energy conversion efficiency by former secondary coil; The shortcoming of this patent formula needs driver's moving automobile to be just in time aligned in the precondition that primary coil could meet and realize this patent target to realize secondary coil, and this device moves up and down, after charging terminates, need a time ensure primary coil and secondary coil be recovered to initial position after automobile just can sail out of, add process procedures and the time of the whole charging of automobile, and easily cause former secondary coil device to be damaged by scratching because driver does sth. in advance moving automobile.
Separately have one section of application number to be the patent of invention of 201080058025.7, disclose a kind of wireless charging system used for electric vehicle and charging method, its charging system comprises: power control unit, and it is arranged at wireless charging institute and controls all Contactless power transmission devices; Be arranged at Contactless power transmission device and the ground close range wireless communication module of parking area; Contactless power transmission device, its with multiple quantity be arranged at parking area ground, select to run with a part of wireless transmission panel of the charge information subtend of electric automobile; And, multiple wireless transmission panels that can be elevated are installed in the bottom of electric automobile, in electric automobile, possess wireless power receiver and wireless charging terminal and close range wireless communication module and charge controller, realized the optimization of wireless charging by the selection of wireless charging terminal driver.This patent is furnished with multiple receiving coil bottom car, when car to be parked in after on charging parking stall by the dash receiver of optimal driver selection effect to realize optimization wireless charging, this patent has on transmitter receiving apparatus oplimal Location realizes to be determined below, one is that the dash receiver needing driver to carry out artificial selection suitable carrys out work, and two is put multiple dash receiver cost intensive at car base fabric.
Other one section of application number is the patent of invention of 201310043965.4, discloses a kind of wireless charging system for electric automobile, solves existing primary coil and docks the problem of mating difficulty with secondary coil.This wireless charging system for electric automobile, comprises wireless transmit plate and wireless receiving plate, also comprises the support platform of berthing for electric automobile and the supporting component for support wireless expelling plate; Wireless receiving plate be arranged at the bottom of electric automobile and its receiving plane towards bottom surface; The position adjusting mechanism that can regulate wireless transmit plate height is at least provided with between supporting component and support platform.Can according to the height of vehicle location rapid adjustment wireless transmit plate, shorten the distance of wireless transmit plate and wireless receiving plate, effectively reduce the charge transport loss that the position due to vehicle and wireless transmit plate causes, improve energy transmission efficiency, radiation is corresponding reduction also.This patent adopts movable wireless charging expelling plate to realize aiming to locate and transmitting usefulness to realize improving wireless charging of expelling plate and dash receiver, the shortcoming of this patent is that moveable expelling plate needs the ground of carrying out larger workload on ground, parking stall to break ground engineering, and need to excavate the pre-buried space of its devices enough, as adopted metal frame structure then to add the cost of whole system as supporting surface, and the danger that metal frame support structure face also also exists the heating of metal pair electro-magnetic wave absorption may.
Utility model content
Therefore, for above-mentioned problem, the utility model proposes a kind of electric automobile wireless charging launch and accept Automatic Alignment System, adopt image recognition localization method, drive wireless charging receiver to aim at wireless launcher by control step Motor Positioning System, image recognition location technology accurate positioning and fast, and control step motor driven systems can realize radio receiver aims at the quick position of wireless launcher, improve wireless charging speed, and liberated driver, make electric automobile wireless charging process more intelligent, convenient and efficient.
In order to solve the problems of the technologies described above, the thinking that the utility model adopts is, this launch and accept Automatic Alignment System is made up of image recognition automatic positioning equipment and motor positioning drive unit, wherein, the realization of motor positioning drive unit is fixed on by wireless charging receiver in transverse and longitudinal driven by stepper motors two rail moving systems, the image recognition automatic positioning equipment be fixed on wireless charging receiver calculates the potential difference of charging device and emitter to the discriminance analysis of the image sample data of wireless launcher according to it, the movement that control step motor drives wireless charging receiver is carried out according to potential difference data, realize progressively aiming at of wireless charging receiver and wireless launcher, due to image recognition accurate positioning rapidly, receiving trap can be realized aim at the quick and precisely location of emitter.
Concrete, the technical solution of the utility model is, a kind of electric automobile wireless charging launch and accept Automatic Alignment System, comprise the radio receiver being located at electric automobile bottom, the ground wireless launcher being located at parking area, radio receiver and wireless launcher are set up communication and are connected in certain distance, and automatically start wireless power transmission; This Automatic Alignment System also comprises image recognition automatic positioning equipment and motor positioning drive unit; Described motor positioning drive unit is located at bottom electric automobile, and described radio receiver is located on this motor positioning drive unit, and realizes all around moving under the driving of motor positioning drive unit; Described image recognition automatic positioning equipment and motor positioning drive unit are set up wired or wireless telecommunications and are connected, this image recognition automatic positioning equipment comprises the collecting unit, analytic unit and the control module that are electrically connected successively, wherein, collecting unit can be realized by camera, and analytic unit and control module can be realized by CPU or single-chip microcomputer.
Wherein, wireless launcher is the fixed position being fixed on ground parking position, what realize running fix is radio receiver on electric automobile, why the utility model is selected to adopt receiving trap move mode instead of emitter move mode, its reason is emitter is be arranged in ground, parking stall, running fix as realized emitter outputs a dented space in a big way to arrange the mobile device of emitter with regard to needing on parking plane, and this device also will will have stronger support performance on the basis ensureing flexible running fix, to ensure that automobile can sustain the weight of car body when pressing through this device, realize program construction work amount larger, and the cost realizing this device is also larger, adopt receiving trap running fix then without the problems referred to above.
Wherein, image recognition automatic positioning equipment can be fixedly installed on a certain position outside electric automobile, also can be arranged on electric automobile, in the utility model, as the preferred scheme of one, this image recognition automatic positioning equipment is located on radio receiver, collecting unit within a preset time interval continuous acquisition wireless launcher location drawing picture and send to analytic unit in real time, analytic unit analyzes the potential difference of wireless launcher and radio receiver in the location drawing picture of each wireless launcher, control module controls motor positioning drive unit according to potential difference data and progressively moves, thus drive radio receiver provided thereon to move to the position aimed at wireless launcher.
As a kind of scheme of simple possible, described motor positioning drive unit comprises transverse and longitudinal track, and radio receiver is movably located on this transverse and longitudinal track, and does cross shifting at transverse and longitudinal track under the driving of drive motor.
Wherein, the principle of work of image recognition automatic positioning equipment is, the camera be fixed in the middle of wireless charging receiver is taken pictures to ground, parking stall, image recognition technology is utilized to identify wireless launcher from captured data, and this picture and the position of the standard parking stall wireless launcher be pre-stored in system are carried out comparing calculation, thus calculate the potential difference of wireless charging receiver and wireless launcher, and then utilize this potential difference Data Control drive motor to drive motor positioning drive unit, and then wireless charging receiver is moved to the position aimed at wireless launcher, thus the accurate aligning location both realizing.
Be beneficial to image recognition to better identify wireless launcher, the circumference of described wireless launcher is also evenly provided with can be luminous monumented point array.Wherein, image identification system identifies as follows:
Step 1: first image identification system is taken institute's off-position and put ground photograph acquisition parking stall, automobile place ground image information data;
Step 2: image identification system carries out pre-service to obtained view data, comprise smoothing to image, conversion, strengthen and filtering process, to ensure the resolution discrimination of view data;
Step 3: the view data of acquisition is divided into standard-sized multiple image segments by system image segmentation standards by image identification system;
Step 4: the image sheet stage group extracting nucleus according to image main characteristic area distribution probability algorithm;
Step 5: feature extraction and selection are carried out to the image segments data in nucleus image sheet stage group, and with the contrast of standard emission plate view data, finally identify the image segments that includes parking stall wireless charging expelling plate feature and piece together out complete wireless charging expelling plate image, and determining that it is obtaining the positional information in complete image;
Step 6: in the positional information of expelling plate step 5 obtained in captured acquisition image and standard picture, the positional information of expelling plate compares and calculates both potential difference data, calculates dash receiver aim at Bit andits control information needed for expelling plate according to this tentiometer.
Wherein, only comparison has the nucleus image segments of identification point, but not more whole image, make alignment algorithm more simple, and algorithm calculate more rapid.Simultaneously, because electric automobile wireless launcher is arranged on the ground on parking stall, this just likely has external coverture and can drop on the subregion of charging device and shelter from the problem of portion identification point, the utility model have employed the identification point array being uniformly distributed in wireless launcher, as long as there are 3 identification points not to be capped, the graph position that image identification system can be formed according to the identification point of its shooting and system pre-stored criteria picture contrast potential difference, and then can realize accurate location; Have in the rainy day problem that emitter flooded by rainwater in addition, the identification point on emitter of the present utility model is can luminous mark point, and when the rainy day, luminous mark point can pass through rainwater by image identification system identification.
What the utility model adopted is fixing get off to realize receiving coil with the removable receiving end at the bottom of car in the control of automated induction systems and aims at the fast automatic of transmitting coil, alignment speed is fast, accurate positioning, reset car can be sailed out of parking stall without the need to wait-receiving mode coil after charging terminates, convenient and quick.Meanwhile, the utility model adopts a dash receiver (i.e. radio receiver) can realize accurately locating fast of launch and accept plate under the control of braking positioning control system, and driver operation is simple, locates efficiently and accurately and advantage of lower cost.In addition, what the utility model adopted is the expelling plate (i.e. wireless launcher) of fixed position, and what locate movement is dash receiver at the bottom of car, parking stall is arranged expelling plate quantities is little, substantially do not need too large engineering of breaking ground to realize, difficulty of construction low and save cost.Meanwhile, the circumference of wireless launcher is evenly provided with can be luminous array distinguishing mark point, like this, increase luminous facility realize identification point can lighting function, after covering expelling plate for rainwater, identification point recognition feature strengthens function; In addition, when carrying out image recognition, described image recognition automatic positioning equipment system adopts image main characteristic area distribution probability algorithm to extract the image segments of nucleus, for reducing image recognition calculated amount and improving image recognition rate.To sum up, the utility model adopts image recognition location technology to control drive motor and drives wireless charging receiver, and then the auto-alignment realized wireless transmit plate, relative to existing manual control automobile or control the alignment so that charging panel realizes charging dash receiver and expelling plate, have to aim at and automatically realize, aim at that location is quick, the advantage of accurate positioning.
Accompanying drawing explanation
Fig. 1 is wireless charging system for electric automobile structural drawing;
Fig. 2 is wireless charging dash receiver structural drawing;
Fig. 3 is wireless charging expelling plate planimetric map;
Fig. 4 A is the photo of electric automobile pre-stored criteria expelling plate position;
Fig. 4 B is the photo that electric automobile is taken when being parked in misalignment expelling plate on parking stall.
Embodiment
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
In Fig. 1-Fig. 4 B, the parts of label representative are following 1, electric motor car; 2, wireless charging expelling plate; 21, expelling plate positioning luminous mark; 3, wireless charging dash receiver; 5, the longitudinal hanging beam of dash receiver; 6, dash receiver lateral suspension beam; 7, transverse shifting stepper motor; 8, stepper motor is vertically moved; 9, stepper motor transverse shifting track; 10, stepper motor vertically moves track; 11, image recognition automatic positioning equipment.
See Fig. 1 and Fig. 2, electric automobile wireless charging launch and accept Automatic Alignment System of the present utility model comprises the wireless charging dash receiver 3 that can automatically locate being located at electric automobile bottom, the ground wireless charging expelling plate 2 being located at parking area, is located at image recognition automatic positioning equipment 11 on wireless charging dash receiver and stepper motor positioning drive unit, and wireless charging expelling plate 2 is located on stepper motor positioning drive unit.
See Fig. 2, motor positioning drive unit is all connected with wireless charging dash receiver 3 with image recognition automatic positioning equipment 11.Wherein, motor positioning drive unit comprises transverse and longitudinal hanging beam (being realized by the longitudinal hanging beam 5 of dash receiver and dash receiver lateral suspension beam 6), wireless charging expelling plate 2 is movably located on this transverse and longitudinal hanging beam, and on transverse and longitudinal hanging beam, does cross shifting under the driving of stepper motor (transverse shifting stepper motor 7 and vertically move stepper motor 8).That is, the realization of motor positioning drive unit is fixed on by wireless charging dash receiver 3 on transverse and longitudinal driven by stepper motors two tracks (stepper motor transverse shifting track 9 and stepper motor vertically move track 10) mobile system, then the image recognition automatic positioning equipment 11 be fixed on wireless charging dash receiver calculates the potential difference of charging panel and expelling plate to the discriminance analysis of the image sample data of wireless charging expelling plate 2 according to it, the movement that control step motor drives wireless charging dash receiver is carried out according to potential difference data, realize progressively aiming at of wireless charging dash receiver 3 and wireless charging expelling plate 2, due to image recognition accurate positioning rapidly, dash receiver can be realized aim at the quick and precisely location of expelling plate.
Wherein, wireless charging expelling plate 2 is the fixed positions being fixed on ground parking position, and what realize running fix is wireless charging dash receiver 3 on electric automobile.
The principle of work of image recognition automatic positioning equipment 11 is, the camera (ccd image identification and positioning system) be fixed in the middle of wireless charging dash receiver 3 is taken pictures to ground, parking stall, image recognition technology is utilized to identify wireless charging expelling plate 2 from captured data, and comparing calculation is carried out in this picture and wireless charging expelling plate 2 position, standard parking stall be pre-stored in system, thus calculate the potential difference of wireless charging dash receiver 3 and wireless charging expelling plate 2, and then utilize this potential difference Data Control stepper motor Locating driver system drive wireless charging dash receiver 3 to move to the position aiming at wireless charging expelling plate 2, the accurate aligning location of both realizations.
Being beneficial to image recognition to better identify wireless charging expelling plate 2, see Fig. 3, wireless charging expelling plate 2 being also evenly arranged monumented point array, and monumented point is set for can luminous point.Because electric automobile wireless charging expelling plate 2 is arranged on the ground on parking stall, this just likely has external coverture and can drop on the subregion of charging panel and shelter from the problem of portion identification point, the utility model have employed the identification point array being uniformly distributed in wireless charging expelling plate 2, as long as have, 3 identification points are not capped can realize accurate location; Have in the rainy day problem that expelling plate flooded by rainwater in addition, the identification point on expelling plate of the present utility model is can luminous mark point, and when the rainy day, luminous mark point can pass through rainwater by image identification system identification.
Fig. 4 A is the photo of electric automobile pre-stored criteria expelling plate position shooting, Fig. 4 B is the photo that electric automobile is taken when being parked in misalignment expelling plate on parking stall, dotted line frame in Fig. 4 B is the normal place of expelling plate, in actual photographed photo Fig. 4 B, the potential difference of expelling plate and empty frame is the data that image recognition automatic positioning equipment 11 needs, and controls dash receiver displacement potential difference orientation, distance realizes receiving, the aligning of expelling plate according to these data.
The utility model passes through such scheme, image recognition location technology is adopted to realize the positioning control of wireless charging electroplax, driving stepper motor is adopted to be provided with the motor positioning drive unit of wireless charging dash receiver 3, there is aligning automatically realize, aim at and locate advantage that is quick, accurate positioning, in addition, employing can luminous mark lattice array strengthen the image recognition of wireless charging expelling plate 2 be identified ability, the generation of the situation cannot located when avoiding wireless charging expelling plate 2 to be blocked.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (4)
1. an electric automobile wireless charging launch and accept Automatic Alignment System, comprise: be located at the radio receiver of electric automobile bottom and be located at the ground wireless launcher of parking area, radio receiver and wireless launcher are set up communication and are connected in certain distance, and automatically start wireless power transmission;
This Automatic Alignment System also comprises image recognition automatic positioning equipment and motor positioning drive unit;
Described motor positioning drive unit is located at bottom electric automobile, and described radio receiver is located on this motor positioning drive unit, and realizes all around moving under the driving of motor positioning drive unit;
Described image recognition automatic positioning equipment and motor positioning drive unit are set up wired or wireless telecommunications and are connected.
2. Automatic Alignment System according to claim 1, is characterized in that: described motor positioning drive unit comprises transverse and longitudinal track, and wireless launcher is movably located on this transverse and longitudinal track, and does cross shifting at transverse and longitudinal track under the driving of drive motor.
3. Automatic Alignment System according to claim 1, is characterized in that: the circumference of described wireless launcher is furnished with array identification marking point.
4. Automatic Alignment System according to claim 3, is characterized in that: the circumference of described wireless launcher is evenly provided with can be luminous array distinguishing mark point.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520534396.8U CN204856221U (en) | 2015-07-22 | 2015-07-22 | Electric automobile is wireless to charge transmission and receives automatic alignment system |
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| CN201520534396.8U CN204856221U (en) | 2015-07-22 | 2015-07-22 | Electric automobile is wireless to charge transmission and receives automatic alignment system |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843353A (en) * | 2016-03-21 | 2016-08-10 | 苏州佳世达电通有限公司 | Wireless charging guidance system and wireless charging guidance device |
| CN106374591A (en) * | 2016-11-25 | 2017-02-01 | 深圳市天克斯技术有限公司 | Wireless charging device |
| CN108004975A (en) * | 2018-01-19 | 2018-05-08 | 伽行科技（北京）有限公司 | A kind of automobile wireless charging ground lock construction and wireless charging method |
| CN108151635A (en) * | 2018-01-04 | 2018-06-12 | 无锡市瀚为科技有限公司 | A kind of automobile wireless charge position detection device and its detection method |
| US10336204B2 (en) | 2017-10-23 | 2019-07-02 | Hyundai Motor Company | Automatic lateral alignment for wireless charging systems |
| CN110091735A (en) * | 2018-09-28 | 2019-08-06 | 吉林大学 | A kind of wireless charging system for electric automobile of integrated auxiliary alignment function |
| CN113370809A (en) * | 2021-07-27 | 2021-09-10 | 长安大学 | Wireless charging device capable of identifying position of electric automobile |
-
2015
- 2015-07-22 CN CN201520534396.8U patent/CN204856221U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105843353A (en) * | 2016-03-21 | 2016-08-10 | 苏州佳世达电通有限公司 | Wireless charging guidance system and wireless charging guidance device |
| CN105843353B (en) * | 2016-03-21 | 2019-05-24 | 苏州佳世达电通有限公司 | Wireless charging guidance system and guiding device |
| CN106374591A (en) * | 2016-11-25 | 2017-02-01 | 深圳市天克斯技术有限公司 | Wireless charging device |
| US10336204B2 (en) | 2017-10-23 | 2019-07-02 | Hyundai Motor Company | Automatic lateral alignment for wireless charging systems |
| CN108151635A (en) * | 2018-01-04 | 2018-06-12 | 无锡市瀚为科技有限公司 | A kind of automobile wireless charge position detection device and its detection method |
| CN108004975A (en) * | 2018-01-19 | 2018-05-08 | 伽行科技（北京）有限公司 | A kind of automobile wireless charging ground lock construction and wireless charging method |
| CN108004975B (en) * | 2018-01-19 | 2024-04-05 | 伽行科技（北京）有限公司 | Wireless charging ground lock structure and wireless charging method for automobile |
| CN110091735A (en) * | 2018-09-28 | 2019-08-06 | 吉林大学 | A kind of wireless charging system for electric automobile of integrated auxiliary alignment function |
| CN113370809A (en) * | 2021-07-27 | 2021-09-10 | 长安大学 | Wireless charging device capable of identifying position of electric automobile |
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Effective date of registration: 20240617 Granted publication date: 20151209 |