CN207496493U - For the vehicle alignment guide of wireless charging system for electric automobile - Google Patents
For the vehicle alignment guide of wireless charging system for electric automobile Download PDFInfo
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- CN207496493U CN207496493U CN201721607179.2U CN201721607179U CN207496493U CN 207496493 U CN207496493 U CN 207496493U CN 201721607179 U CN201721607179 U CN 201721607179U CN 207496493 U CN207496493 U CN 207496493U
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- coil
- vehicle
- alignment
- wireless charging
- primary coil
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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
- 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
- Y02T90/12—Electric charging stations
Abstract
The utility model describes a kind of vehicle alignment guide for wireless charging system for electric automobile：Including ground primary coil and vehicle-mounted secondary coil, further include：Multiple alignment coils；Multiple voltage sensors, wherein, each voltage sensor is connect respectively with each coil that is aligned, for obtaining the induced voltage for being aligned and being generated in coil；Processor is connect with the multiple voltage sensor, for handling the induced voltage, determines position of the vehicle-mounted secondary coil relative to ground primary coil；Display device, for adjustment direction being needed to show location information and alignment.Alignment direction adjustment information can be fed back to driver by the utility model, and by constantly adjusting the position of vehicle, most vehicle is parked in above primary coil and can complete alignment guide operation with charged area driver at last.
Description
Technical field
The utility model is related to electric vehicle wireless charging fields, and in particular to one kind is used for realizing that electric vehicle charged
Alignment guide operates between electric vehicle and ground charge point in journey.
Background technology
With the development of electric vehicle, people are also more and more to charge requirement, and traditional wired charging stake was being charged
Must charging gun be inserted into charging socket manually after a stoppage in journey, there are charging operations complex steps, rainy day charging is not square
Just the drawbacks of.Wireless charging stake uses electromagnetic induction principle, is charged using contactless charging mode to electric vehicle, greatly
Charging operations flow is simplified greatly, improves charging operations safety.Wireless charging stake energy transmission device is divided into two parts：Ground
Face energy transmitting coil, vehicle-mounted energy receiving coil.Wireless charging stake only needs to reach electric vehicle in charging process specified
Charge position, make the energy receiving coil of vehicle-mounted end and the energy transmitting coil in alignment of ground surface end, it is possible to start to charge up.
Due to the energy emitting device of wireless charging stake and receiving device surface area very little, electric vehicle is perfectly directly parked in wireless charging
There is very big difficulty on electricity point, in order to enable a driver to accurately stop electric vehicle onto correct charge point, need a set of
Charging alignment guide method and apparatus solve the problems, such as this.
Invention content
The technical problem to be solved by the present invention is to provide a kind of vehicles pair for wireless charging system for electric automobile
Neat guide device.
In order to solve the above technical problems, the technical solution adopted in the utility model is：One kind is used for electric vehicle wireless charging
The vehicle alignment guide of electric system, including ground primary coil and vehicle-mounted secondary coil, further includes：Multiple alignment coils；
Multiple voltage sensors, wherein, each voltage sensor is connect respectively with each coil that is aligned, and is aligned for obtaining
The induced voltage generated in coil；Processor is connect with the multiple voltage sensor, to the induced voltage
Reason, determines position of the vehicle-mounted secondary coil relative to ground primary coil；Display device, for location information and alignment to be needed
Adjustment direction is shown.
Further, each alignment coil is made of three small coils, two between the axis of three small coils
Two are mutually perpendicular to.In this way can more accurate induced field variation.
Further, it is described to determine position of the vehicle-mounted secondary coil relative to ground primary coil, it is by comparing multiple
The size of induced voltage generated in alignment coil determines position of the vehicle-mounted secondary coil relative to ground primary coil.
The beneficial effects of the utility model are：The voltage sensed is transmitted to by voltage sensor by being aligned coil
The processor of Vehicle Controller, processor determine position of the secondary coil with respect to primary coil according to the voltage value of different alignment coils
It puts, feeds back to driver, most be parked in above primary coil can be with for vehicle at last by constantly adjusting the position of vehicle by driver
Alignment guide operation is completed in charged area.
Description of the drawings
Fig. 1 is wireless charging system schematic diagram；
Fig. 2 is guiding alignment coil vertical view；
Fig. 3 is guiding alignment coil side view；
Fig. 4 is alignment coil control principle drawing；
Fig. 5 moves diagrammatic top view for alignment coil；
Fig. 6 is the movement of alignment coil and magnetic field diagrammatic side view；
Fig. 7 is alignment coil induced voltage schematic diagram；
Fig. 8 moves schematic diagram for alignment coil；
Fig. 9 moves schematic diagram for alignment coil；
Figure 10 is alignment coil induced voltage schematic diagram；
Figure 11 is alignment coil inside principle schematic；
Figure 12 handles schematic diagram for alignment coil internal circuit；
Figure 13 exports induced voltage schematic diagram for alignment coil；
Figure 14 is to its coil inside circuit diagram；
Figure 15 is three-point fix schematic diagram；
Figure 16 is four point positioning schematic diagram；
Figure 17 is secondary coil charging operations position view；
Figure 18 is 3/4 adjustment direction schematic diagram of region；
Figure 19 is 3/4 adjustment direction schematic diagram of region.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention is further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
The utility model provides a kind of method and apparatus for automobile wireless charging system vehicle alignment guide, for solving
The problem of certainly automobile cannot be parked on suitable charge position by driver well during electric vehicle wireless charging.Alignment guide
Method and apparatus be specifically described as follows：
Wireless charging system component part as shown in Figure 1, in figure 12 be power grid power supply, 2 be wireless charging stake ground
Power converting part, 6 be ground primary coil, and 4 be vehicle-mounted energy conversion portion, and 8 be vehicle-mounted secondary coil, and 10 be electronic vapour
Vehicle.
When wireless charging system works, ground primary coil 6 converts electrical energy into the electric energy in magnetic field, vehicle-mounted secondary coil 8
The magnetic energy in magnetic field is changed by vehicle-mounted energy conversion equipment 4 to charging batteries of electric automobile by electric energy by electromagnetic induction.It is right
Neat guide device is by multiple alignment coils（A kind of coil more much smaller than secondary coil diameter）Composition, alignment guide is pacified
On vehicle-mounted secondary coil 8.Primary coil 6 sends out the variation magnetic field of certain power in alignment procedure, mounted on secondary line
Alignment coil on circle will induce voltage, and the processor progress that Vehicle Controller is transmitted to by voltage sensor is multiple right
The processing of neat coil signal, finally obtains position of the secondary coil with respect to primary coil, feeds back to ground installation and pass through indicator light
Steer motor driver adjusts the position of vehicle, finally completes alignment operation and charges.
Alignment coil is mounted on the position of vehicle-mounted secondary coil as shown in Figures 2 and 3, and 6 be ground primary coil, and 8 be pair
Sideline is enclosed, and 14a-d is alignment coil, and when alignment coil is placed in changing magnetic field, coil both ends can generate an induction electric
Gesture.
Alignment coil control principle drawing is as shown in figure 4, the alignment each coils of coil 14a-d pass through a voltage sensor
20a-d access processors carry out operation, then show current aligned condition in display device 18 by radio communication, instruction is driven
The person of sailing carries out vehicle adjustment position and completes alignment.
Be aligned coil with car shift position schematic diagram as shown in Figure 5 and Figure 6, alignment coil in different location magnetic field
The voltage of sensing is also different, and alignment coil induced voltage is as shown in Figure 7.
It is aligned coil and moves schematic diagram as shown in Figure 8 and Figure 9 in different positions, alignment coil induced electromotive force is as schemed
Shown in 10.
It is as shown in figure 11 to be aligned coil inside principle schematic, by X, Y, the small coil composition in three directions of Z axis in this way may be used
With the variation of more accurate induced field.
It is as shown in figure 12 to be aligned coil builtin voltage processing schematic diagram, by the coil-induced voltage of three, space different directions
Into the modulus operation of row vector, obtain induced voltage of the alignment coil in magnetic field
, the induced voltage of alignment coil different location in magnetic fieldAs shown in figure 13.
Due to vector modulus operand it is more complicated, be not suitable for alignment coil internal circuit realize, still pass through
Hardware circuit realization takes three coil voltage absolute values to be added and obtains alignment voltage induced coil voltage VSUM_ABS=（|Vx|+|Vy|
+ | Vz |), particular hardware realization principle schematic diagram is as shown in figure 14.Cx-z is the coil in three directions in Figure 14, and 302 be two poles
Pipe, obtains forward sense voltage, and 304 carry out induced voltage current limliting for resistance, and 306 be capacitance into line output voltage voltage stabilizing, output
Voltage VSUM_ABS The processor of vehicle-mounted control part is passed to through voltage sensor, processor passes through the sensing to multiple alignment coils
Voltage is handled, and obtains position of the current secondary coil relative to primary coil.
Alignment means secondary coil installation site as shown in figs, Figure 15 is using 3 alignment coil C301、
C302、C303The alignment means of composition, by comparing C301、C302、C303The size of induced voltage generated in alignment coil determines pair
The position relative to primary coil is enclosed in sideline.Figure 16 is using 4 alignment coil C301、C302、C303、C304The alignment coil of composition,
Increase an alignment coil C304, can more accurately determine position of the secondary coil relative to primary coil.
Operating area figure where secondary coil is drawn centered on primary coil is as shown in figure 17, and region 1 is aligned to be perfect
Region is best alignment region when secondary coil is in region 1.Region 2 is chargeable operating area, allows to carry out charging behaviour
Make.When secondary coil is located at region 1/2, meets charge condition, disclosure satisfy that charging requirement, charging operations can be carried out.Area
Domain 3/4 is adjustment region, and when secondary coil falls into region 3/4, system does not allow to charge, and needs to adjust secondary coil to region
1/2 can just charge.
Different positions, vehicle need adjustment direction schematic diagram such as when being in adjustment region 3/4 for vehicle-mounted secondary coil
Shown in Figure 18 and 19, Figure 18 is 8 detailed direction adjustment region schematic diagrames of comparison, is accurately adjusted direction instruction.Figure 19
It is 4 direction adjustment region schematic diagrames, can adjusts and indicate into line direction.
In electric vehicle travels alignment procedure towards wireless charging point, primary coil remains one with the power of very little always
Induced voltage is constantly transmitted to vehicle by a changing magnetic field, the alignment sensor on vehicle-mounted secondary coil by voltage sensor
The processor of set controller, processor are handled by passing coil-induced voltage to multiple alignment, determine current secondary coil
Relative to the position of primary coil, adjustment direction is needed to show location information and alignment and feed back to driver, driver
The travel direction of electric vehicle is adjusted according to these feedbacks, constantly vehicle-mounted secondary coil is finally made to be parked in original by this process
The alignment guide operation of wireless charging is completed in the position that sideline circle allows.
In short, the above is only the preferred embodiment of the utility model only, it is not intended to limit the utility model, it is all
All any modification, equivalent and improvement made within spirit of the present utility model and principle etc., should be included in this practicality
Within novel protection domain.
Claims (3)
1. a kind of vehicle alignment guide for wireless charging system for electric automobile, including ground primary coil and vehicle-mounted pair
Sideline is enclosed, which is characterized in that is further included：
Multiple alignment coils；
Multiple voltage sensors, wherein, each voltage sensor is connect respectively with each coil that is aligned, for obtaining
The induced voltage generated in alignment coil；
Processor is connect with the multiple voltage sensor, for handling the induced voltage, determines vehicle-mounted secondary line
Enclose the position relative to ground primary coil；
Display device, for adjustment direction being needed to show location information and alignment.
2. a kind of vehicle alignment guide for wireless charging system for electric automobile described in accordance with the claim 1, special
Sign is that each alignment coil is made of three small coils, is mutually hung down two-by-two between the axis of three small coils
Directly.
3. a kind of vehicle alignment guide for wireless charging system for electric automobile described in accordance with the claim 1, special
Sign is, described to determine position of the vehicle-mounted secondary coil relative to ground primary coil, is by comparing in multiple alignment coils
The size of the induced voltage of generation determines position of the vehicle-mounted secondary coil relative to ground primary coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721607179.2U CN207496493U (en) | 2017-11-27 | 2017-11-27 | For the vehicle alignment guide of wireless charging system for electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721607179.2U CN207496493U (en) | 2017-11-27 | 2017-11-27 | For the vehicle alignment guide of wireless charging system for electric automobile |
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| Publication Number | Publication Date |
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| CN207496493U true CN207496493U (en) | 2018-06-15 |
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| CN201721607179.2U Active CN207496493U (en) | 2017-11-27 | 2017-11-27 | For the vehicle alignment guide of wireless charging system for electric automobile |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020211479A1 (en) * | 2019-04-18 | 2020-10-22 | 华为技术有限公司 | Wireless power transmission alignment method and device, wireless power transmission system, and electric vehicle |
| CN111917197A (en) * | 2020-01-16 | 2020-11-10 | 深圳市磁迹科技有限公司 | Positioning auxiliary device suitable for wireless charging system |
| CN112556637A (en) * | 2021-03-01 | 2021-03-26 | 江苏方天电力技术有限公司 | Wireless charging coil angle deviation positioning system and method based on electronic compass |
| CN112977115A (en) * | 2021-02-08 | 2021-06-18 | 广州唐斯科技有限公司 | Charging gun with safety prompt function, and safety prompt method and device of charging gun |
| CN114475293A (en) * | 2021-12-22 | 2022-05-13 | 北京理工大学 | Position sensor-free electric automobile wireless charging automatic starting and guiding system |
-
2017
- 2017-11-27 CN CN201721607179.2U patent/CN207496493U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020211479A1 (en) * | 2019-04-18 | 2020-10-22 | 华为技术有限公司 | Wireless power transmission alignment method and device, wireless power transmission system, and electric vehicle |
| CN111823916A (en) * | 2019-04-18 | 2020-10-27 | 华为技术有限公司 | Wireless charging alignment method and device, wireless charging system and electric vehicle |
| EP3952059A4 (en) * | 2019-04-18 | 2022-05-25 | Huawei Technologies Co., Ltd. | Wireless power transmission alignment method and device, wireless power transmission system, and electric vehicle |
| CN111917197A (en) * | 2020-01-16 | 2020-11-10 | 深圳市磁迹科技有限公司 | Positioning auxiliary device suitable for wireless charging system |
| CN111917197B (en) * | 2020-01-16 | 2024-01-16 | 深圳市磁迹科技有限公司 | Positioning auxiliary device suitable for wireless charging system |
| CN112977115A (en) * | 2021-02-08 | 2021-06-18 | 广州唐斯科技有限公司 | Charging gun with safety prompt function, and safety prompt method and device of charging gun |
| CN112556637A (en) * | 2021-03-01 | 2021-03-26 | 江苏方天电力技术有限公司 | Wireless charging coil angle deviation positioning system and method based on electronic compass |
| CN114475293A (en) * | 2021-12-22 | 2022-05-13 | 北京理工大学 | Position sensor-free electric automobile wireless charging automatic starting and guiding system |
| CN114475293B (en) * | 2021-12-22 | 2024-01-30 | 北京理工大学 | Automatic starting and guiding system for wireless charging of electric automobile without position sensor |
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Address after: Floor 2, building 1, No. 211, Chuanda Road, Pudong New Area, Shanghai, 201200 Patentee after: Shanghai Wanji Electronic Technology Co.,Ltd. Address before: No. 188, Zhongyang Road, Diankou Town, Zhuji City, Shaoxing City, Zhejiang Province Patentee before: ZHEJIANG WANAN YICHUANG ELECTRONIC TECHNOLOGY Co.,Ltd. |