CN106476649A - A kind of system of selection based on radio energy charge position region - Google Patents
A kind of system of selection based on radio energy charge position region Download PDFInfo
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- CN106476649A CN106476649A CN201611143380.XA CN201611143380A CN106476649A CN 106476649 A CN106476649 A CN 106476649A CN 201611143380 A CN201611143380 A CN 201611143380A CN 106476649 A CN106476649 A CN 106476649A
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- secondary part
- base station
- former limit
- position region
- charge position
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/30—Constructional details of charging stations
- B60L53/35—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles
- B60L53/38—Means for automatic or assisted adjustment of the relative position of charging devices and vehicles specially adapted for charging by inductive energy transfer
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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
- Y02T90/12—Electric charging stations
-
- 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
- Y02T90/16—Information or communication technologies improving the operation of electric vehicles
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention discloses a kind of system of selection based on radio energy charge position region, by setting up former limit partial coordinates system, it is then determined that the position that secondary part is fastened in former limit partial coordinates, and judge whether described secondary part is in charge position region, if so, then start wireless charging;If it is not, adjusting to charge position region described secondary part it is achieved that being accurately positioned secondary part position, and then it is accurately positioned the position of electric automobile;And adjust the distance of secondary part, the position of adjustment electric automobile according to required for calculate, enable electric automobile to be parked in charge position region and be charged, improve the charging ability of wireless charging device and efficiency.
Description
Technical field
The present invention relates to wireless power transmission technical field, more particularly to one kind are based on radio energy charge position region
System of selection.
Background technology
Non-contact power be using magnetic coupling realize " wireless power ", that is, using former secondary be kept completely separate contactless
Transformator, by the coupled transfer electric energy of high frequency magnetic field so that former limit (supply side) and secondary (electricity consumption in energy transfer process
Side) not physically connected.Compared with powering with traditional contact, non-contact power is used conveniently and safely, be difficult to leak electricity, no-spark and
Danger Electric shock risk, no laying dust and contact loss, mechanical abrasion and corresponding maintenance issues, are suitable for multiple vile weathers and ring
Border, facilitates implementation automatic power, has a good application prospect, and has been widely used at present in charging electric vehicle technology.
In the prior art, electric automobile is provided with the secondary coil of contactless transformer, wireless charging system
The primary coil of contactless transformer is provided with parking stall.Rest in the preset charged position on parking stall when electric automobile
During region, primary coil and secondary coil form loosely coupled transformer, and the high frequency magnetic field of primary coil transmitting can pass through electromagnetism
The mode of sensing or electric and magnetic oscillation is received by secondary coil, and then is converted to electric energy by secondary coil, thus realizing electric energy
It is wirelessly transferred, be reached for the purpose that electric automobile carries out wireless charging.
The non-contact transformer being completely separate due to former and deputy side, and the primary coil of contactless transformer is typically solid
Determine on the ground, secondary coil is arranged on electric automobile, when carrying out wireless charging using non-contact transformer, if former limit
Excessive with the skew of secondary coil position, large effect can be caused to the ability of wireless charging and efficiency, offer one is therefore provided
Plant the method selecting charge position region, be accurately positioned the position of electric automobile, and adjust its position so as to can be parked in properly
Charge position region be charged.
Content of the invention
It is an object of the invention to provide a kind of system of selection based on radio energy charge position region, by determining secondary
The position that part is fastened in described former limit partial coordinates, can be accurately positioned the parking spot of electric automobile and calculate required tune
Whole distance, and pass through wireless charging device, so that electric automobile is charged on charge position region.
For achieving the above object, the invention provides following scheme:
A kind of system of selection based on radio energy charge position region, described system of selection, including:
Set up former limit partial coordinates system;Described former limit partial coordinates system represent fix on the ground former limit partly in each component
Position relationship;Described former limit part includes:The primary coil of contactless transformer and three base stations;
Determine the position that secondary part is fastened in described former limit partial coordinates;Described secondary part represents and is fixed on electronic vapour
Secondary part on car;Described secondary part includes:The secondary coil of contactless transformer and wireless carrier communication module;
Judge whether described secondary part is in charge position region;
If so, then start wireless charging;
If it is not, then described secondary part is adjusted to charge position region.
Optionally, described set up former limit partial coordinates system, specifically include:
On the basis of the distance between known any two base station and primary coil are located at three base station center positions, with
Any one base station is initial point, sets up former limit partial coordinates system;Wherein, described three base stations are A0、A1、A2;Described base station A0、
A1、A2Each include a wireless carrier communication module;Described base station A0、A1The distance between be L0, described base station A1、A2Between
Distance be L1, described base station A0、A2The distance between be L2.
Optionally, the described position fastened in described former limit partial coordinates determining secondary part, specifically includes:
Obtain the coverage between secondary part and each base station;
According to described coverage, determine the position fastened in described former limit partial coordinates of secondary part.
Optionally, the described coverage obtaining between secondary part and each base station, including:
Wireless carrier communication module signal tranmitting frequency in described secondary part and described each base station is set;
According to described wireless carrier communication module signal tranmitting frequency, obtain the flight time of signal;
The described flight time is multiplied by rate of signal propagation, and then obtains effective between secondary part and each base station successively
Distance.
Optionally, the described coverage obtaining between secondary part and each base station, further includes:
Wireless carrier communication module signal radiation pattern on setting secondary part is broadcast mode;On described secondary part
Wireless carrier communication module to each base station distribute timing node, arrange each base station response time, and each base station receive broadcast
After frame, reenter reception state, wait the wireless carrier communication module on described secondary part to send claim frame;
After wireless carrier communication module on described secondary part sends claim frame, enter reception state, wait each base station
Back-signalling;
Each base station, according to the described response time of distribution before communication, sequentially sends Echo Frame to described secondary part;Send
After success, each base station enters reception state, waits described secondary part to send termination signal;
After described secondary part has received each base station Echo Frame, each key frame timestamp is packed into abort frame, with wide
Broadcast mode is sent to corresponding base station;Each base station, after receiving label abort frame, parses the valid data in frame bag, obtains secondary
Coverage between part and each base station.
Optionally, the described position fastened in described former limit partial coordinates determining secondary part, specifically includes:
With each base station coordinates as the center of circle, the coverage between described secondary part and each base station is radius, determines three
Circle;
Using the described intersection point determining three circles, determine the position fastened in described former limit partial coordinates of secondary part.
Optionally, judge whether described secondary part is in charge position region, specifically include:
The threshold value of anti-skew is set;Described threshold value represents to be fastened in former limit partial coordinates, described primary coil and described pair
The minimum range of rim portion skew;
The position fastened in described former limit partial coordinates according to described secondary part, calculate described secondary part with described
Actual range between primary coil;
Relatively described threshold value and described actual range, judge whether described secondary part is in charge position region.
Optionally, described beginning wireless charging, specifically includes:
If described actual range is less than or equal to described threshold value, described secondary part is in charge position region, opens
Beginning wireless charging.
Optionally, the described secondary part of described adjustment, specifically includes:
If described actual range is more than described threshold value, described secondary part is not at charge position region, calculates described
The distance of the required adjustment of secondary part;
According to described distance, described secondary part is adjusted to charge position region.
The specific embodiment being provided according to the present invention, the invention discloses following technique effect:
The invention provides a kind of system of selection based on radio energy charge position region, initially set up former limit part and sit
Mark system, it is then determined that the position that secondary part is fastened in former limit partial coordinates, and judge whether described secondary part is in charging
The band of position, if so, then starts wireless charging;If it is not, then adjust secondary part, until described secondary part is adjusted to charging
The band of position is it is achieved that be accurately positioned secondary part position, and then is accurately positioned the position of electric automobile;And according to calculating
Need to adjust the distance of secondary part, the position of adjustment electric automobile, enable electric automobile to be parked in charge position region and carry out
Charge, improve charging ability and the efficiency of wireless charging device.
Brief description
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to institute in embodiment
Need use accompanying drawing be briefly described it should be apparent that, drawings in the following description be only the present invention some enforcement
Example, for those of ordinary skill in the art, without having to pay creative labor, can also be according to these accompanying drawings
Obtain other accompanying drawings.
Fig. 1 is the system of selection flow chart based on radio energy charge position region of the embodiment of the present invention;
Fig. 2 is the location diagram of former limit partly each component of the embodiment of the present invention;
Fig. 3 is the measurement coverage schematic diagram between the label of the embodiment of the present invention and single base station;
Fig. 4 is the determination secondary part position view of the embodiment of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of not making creative work
Embodiment, broadly falls into the scope of protection of the invention.
It is an object of the invention to provide a kind of system of selection based on radio energy charge position region, by determining secondary
The position that part is fastened in described former limit partial coordinates, can be accurately positioned the parking spot of electric automobile and calculate required tune
Whole distance, and pass through wireless charging device, so that electric automobile is charged on charge position region.
Understandable for enabling the above objects, features and advantages of the present invention to become apparent from, below in conjunction with the accompanying drawings and specifically real
The present invention is further detailed explanation to apply mode.
Embodiment one
First, the present invention carries out wireless charging using contactless transformer device for electric automobile, is carrying out wireless charging
Before electricity, the first parking spot of electric automobile to be positioned, then the parking spot of adjustment electric automobile is so as to be parked in charge position
Region, and current wireless location technology has a lot, including WIFI, RFID, ultrasound wave and bluetooth etc., various location technology features
As shown in table 1.As seen from Table 1, its positioning of most of positioners realizes all existing a common problem positioning precision
It is meter level level, and the positioning general precision of the contactless transformer used by electric automobile needs to control in Centimeter Level.Exactly
The presence of this problem, limits application in the positioning of contactless transformer for the wireless location technology.
Table 1 wireless location technology feature
Draw the Positioning Precision Control of UWB (wireless carrier communication) technology in Centimeter Level from table 1, described present invention employs
UWB module.In addition, UWB technology is a kind of no-load communication techniques of utilization subnanosecond level Ultra-short pulse.With respect to other positioning
Technology, technology has the advantage that:
(1) communication distance is remote, enables efficient communication in the range of hundred meters, meets indoor positioning needs
(2) high data rate, in the range of 10 meters, message transmission rate reaches hundred Mbit/s, even up to Gbit/s
(3) strong antijamming capability, multi-path resolved ability is strong
(4) small power consumption, transmission power is in rank
(5) temporal resolution is high, and time zone indexes in subnanosecond rank
And UWB location technology can control error to exist by error control in cm rank in theory in practical application
10cm.With respect to other location technologies, carry out positioning using UWB technology and can obtain higher positioning precision and positioning stablity
Property, therefore, in the present invention, former limit part and secondary part all arrange UWB module
Fig. 1 is the system of selection flow chart based on radio energy charge position region, as shown in figure 1, described system of selection,
Including:
Step 101:Set up former limit partial coordinates system;Described former limit partial coordinates system represents and fixes former limit part on the ground
In each component position relationship;Described former limit partial coordinates system is in the distance between known any two base station and former limit line
On the basis of circle is located at three base station center positions, with any one base station as initial point, set up former limit partial coordinates system.
As shown in Fig. 2 described former limit part includes:The primary coil of contactless transformer and three base stations;Three bases
Stand respectively A0、A1、A2;Primary coil is located at the center of three base stations;Described base station A0、A1The distance between be L0, institute
State base station A1、A2The distance between be L1, described base station A0、A2The distance between be L2;Described base station A0、A1、A2Each include one
Individual wireless carrier communication module.
Step 102:Determine the position that secondary part is fastened in described former limit partial coordinates;Described secondary part represents fixing
Secondary part on electric automobile;Described secondary part includes:The secondary coil of contactless transformer and wireless carrier lead to
News module.Wherein it is determined that the position that secondary part is fastened in described former limit partial coordinates, specifically include:
The first step:Obtain the coverage between secondary part and each base station, including:As shown in Figure 3;
Wireless carrier communication module signal tranmitting frequency in described secondary part and described each base station is set;
According to described wireless carrier communication module signal tranmitting frequency, obtain the flight time of signal;
The described flight time is multiplied by rate of signal propagation, and then obtains effective between secondary part and each base station successively
Distance.
Further include:
Wireless carrier communication module signal radiation pattern on setting secondary part is broadcast mode;On described secondary part
Wireless carrier communication module to each base station distribute timing node, arrange each base station response time, and each base station receive broadcast
After frame, reenter reception state, wait the wireless carrier communication module on described secondary part to send claim frame;
After wireless carrier communication module on described secondary part sends claim frame, enter reception state, wait each base station
Back-signalling;
Each base station, according to the described response time of distribution before communication, sequentially sends Echo Frame to described secondary part;Send
After success, each base station enters reception state, waits described secondary part to send termination signal;
After described secondary part has received each base station Echo Frame, each key frame timestamp is packed into abort frame, with wide
Broadcast mode is sent to corresponding base station;Each base station, after receiving label abort frame, parses the valid data in frame bag, obtains secondary
Coverage between part and each base station.
Second step:According to the described coverage obtaining between secondary part and each base station, determine secondary part in institute
State the position that former limit partial coordinates are fastened, specifically include:
With each base station coordinates as the center of circle, the coverage between described secondary part and each base station is radius, determines three
Circle;Using the described intersection point determining three circles, determine the position fastened in described former limit partial coordinates of secondary part.As Fig. 4
Shown, from theoretical basiss, determine the position fastened in described former limit partial coordinates of secondary part, due to secondary part and three
Individual base station A0、A1、A2The distance between r0、r1、r2And the distance between any two base station L0、L1、L2Be it is known that thus
Can determine that the position that secondary part is fastened in described former limit partial coordinates.
In addition, determining the parking spot of electric automobile from actual mechanical process, its specific embodiments is:With former limit portion
The three base station A dividing0、A1、A2In A0Base station is as communication base station, A0On UWB module and former limit partly in also included
Primary controller is communicated by SPI;A0Receive secondary part and three base station A0、A1、A2The distance between r0、r1、r2,
And distance value is delivered in primary controller by SPI communication;Due to the distance between any two base station L0、L1、L2It is true
Fixed and known, charge position region is also to determine and known, and primary controller passes through secondary part and three base station A0、A1、
A2The distance between r0、r1、r2And the distance between any two base station L0、L1、L2, calculate the position determining secondary part
Put, and then determine the parking spot of electric automobile.
Step 103:Judge whether described secondary part is in charge position region, specifically include:
The threshold value of anti-skew is set;Described threshold value represents to be fastened in former limit partial coordinates, described primary coil and described pair
The minimum range of rim portion skew;
The position fastened in described former limit partial coordinates according to described secondary part, calculate described secondary part with described
Actual range between primary coil;
Primary controller will calculate actual range and described threshold value between described secondary part and described primary coil
It is compared, judge whether described secondary part is in charge position region.
Step 104:Start wireless charging;Specifically include:If calculating between described secondary part and described primary coil
Actual range be less than or equal to described threshold value, then primary controller the information that secondary part is in charge position region is led to
Cross SPI communication and transfer back to communication base station A0On UWB module in and broadcasted.
UWB module on secondary part is communicated by SPI with secondary controller.Secondary part receives communication base station
A0The information that the electric automobile passed back is in charge position region is delivered in secondary controller by SPI communication, and secondary controls
Correct for parking spot information can be delivered in entire car controller by device by bus, then just will be stopped by entire car controller
True presentation of information, on the display screen of electric car cab, points out driver can start wireless charging.
Step 105:Described secondary part is adjusted to charge position region, specifically includes:
If described actual range is more than described threshold value, described secondary part is not at charge position region, calculates described
The distance of the required adjustment of secondary part, that is, calculate electric automobile needs the distance of adjustment, then former limit apart from charge position region
Electric automobile is not at charge position region and needs the distance of adjustment to transfer back to communication base station A by SPI communication by controller0
On UWB module in and broadcasted
UWB module on secondary part is communicated by SPI with secondary controller.Secondary part receives communication base station
A0The electric automobile passed back is not at the information in charge position region and the distance needing adjustment, and is delivered to by SPI communication
In secondary controller, the distance of the information of parking spot mistake and needs adjustment can be delivered to whole by secondary controller by bus
In vehicle controller, and by the information of parking spot mistake and the distance of adjustment is needed to transmit and be shown in electricity by entire car controller
On the display screen of electrical automobile driver's cabin, point out driver adjustment parking spot.
The present embodiment is by setting up former limit partial coordinates system, it is then determined that the position that secondary part is fastened in former limit partial coordinates
Put, and judge whether described secondary part is in charge position region, if so, then start wireless charging;If it is not, then adjusting described
Secondary part is it is achieved that be accurately positioned secondary part position, and then is accurately positioned the position of electric automobile, and according to calculating
Need to adjust the distance of secondary part, manually adjust the position of electric automobile, enable electric automobile to be parked in charge position region
It is charged, improve charging ability and the efficiency of wireless charging device.
Embodiment two
The present embodiment improves on the basis of embodiment one.Three base station A with former limit part0、A1、A2In
A0Base station is as communication base station, A0On UWB module communicated by SPI with primary controller.A0Receive secondary part
With three base station A0、A1、A2The distance between r0、r1、r2, and distance value is delivered in primary controller by SPI communication, by
In the distance between any two base station L0、L1、L2It is to determine and known, the preferable stopping for charging band of position is also to determine
And known, primary controller passes through secondary part and three base station A0、A1、A2The distance between r0、r1、r2And any two
The distance between base station L0、L1、L2, calculate the position of secondary part, and then determine electric automobile parking spot, according to determination
Electric automobile parking spot, judges whether to be in the interval of charge position region and calculate electric automobile apart from charge position region
Need the distance of adjustment.Primary controller by the result of judgement and needs the distance of adjustment to transfer back to communication base by SPI communication
Stand A0On UWB module in and broadcasted.UWB module on secondary part is communicated by SPI with secondary controller.Secondary
Rim portion receives communication base station A0The judgement information of the parking spot correctness passed back and the distance needing adjustment, and pass through
SPI communication is delivered in secondary controller.
If electric automobile is not at charge position region, secondary controller by the information of parking spot mistake and can need
Distance to be adjusted is delivered in entire car controller by bus, the parameter of entire car controller adjustment, automatic parking.
If electric automobile is in charge position region, correct for parking spot information can be passed through bus by secondary controller
It is delivered in entire car controller, and proceed by wireless charging.
The present embodiment is by setting up former limit partial coordinates system, it is then determined that the position that secondary part is fastened in former limit partial coordinates
Put, and judge whether described secondary part is in charge position region, if so, then start wireless charging;If it is not, then adjusting secondary
Part, is automatically adjusted to secondary part and is in charge position region, realizes being accurately positioned secondary part position, and then is accurately positioned
The position of electric automobile, and adjust the distance of secondary part according to required for calculate, and then achieve the electronic vapour of adjust automatically
The position of car, enables electric automobile to be parked in charge position region and is charged, improve wireless charging device charging ability with
Efficiency.
In addition, being directed to the present invention, explanation is needed a little to be to ensure that the safety of charging, only when primary controller and pair
When side controller all receives the information that electric automobile is in charge position region, electric automobile just can proceed by wireless charging
Electricity.If any controller does not receive information or receives the information that electric automobile is not at charge position region, will not enter
Row wireless charging works.
In this specification, each embodiment is described by the way of going forward one by one, and what each embodiment stressed is and other
The difference of embodiment, between each embodiment identical similar portion mutually referring to.For system disclosed in embodiment
For, because it corresponds to the method disclosed in Example, so description is fairly simple, say referring to method part in place of correlation
Bright.
Specific case used herein is set forth to the principle of the present invention and embodiment, the saying of above example
Bright it is only intended to help and understands the method for the present invention and its core concept;Simultaneously for one of ordinary skill in the art, foundation
The thought of the present invention, all will change in specific embodiments and applications.In sum, this specification content is not
It is interpreted as limitation of the present invention.
Claims (9)
1. a kind of system of selection based on radio energy charge position region is it is characterised in that described system of selection, including:
Set up former limit partial coordinates system;Described former limit partial coordinates system represent fix on the ground former limit partly in each component
Position relationship;Described former limit part includes:The primary coil of contactless transformer and three base stations;
Determine the position that secondary part is fastened in described former limit partial coordinates;Described secondary part is fixed on electric automobile;Institute
State secondary part to include:The secondary coil of contactless transformer and wireless carrier communication module;
Judge whether described secondary part is in charge position region;
If so, then start wireless charging;
If it is not, then described secondary part is adjusted to charge position region.
2. a kind of system of selection based on radio energy charge position region according to claim 1 is it is characterised in that institute
State and set up former limit partial coordinates system, specifically include:
On the basis of the distance between known any two base station and primary coil are located at three base station center positions, with any
One base station is initial point, sets up former limit partial coordinates system;Wherein, described three base stations are A0、A1、A2;Described base station A0、A1、A2
Each include a wireless carrier communication module;Described base station A0、A1The distance between be L0, described base station A1、A2Between away from
From for L1, described base station A0、A2The distance between be L2.
3. a kind of system of selection based on radio energy charge position region according to claim 1 is it is characterised in that institute
State the position fastened in described former limit partial coordinates determining secondary part, specifically include:
Obtain the coverage between secondary part and each base station;
According to described coverage, determine the position fastened in described former limit partial coordinates of secondary part.
4. a kind of system of selection based on radio energy charge position region according to claim 3 is it is characterised in that institute
State the coverage obtaining between secondary part and each base station, specifically include:
Wireless carrier communication module signal tranmitting frequency in described secondary part and described each base station is set;
According to described wireless carrier communication module signal tranmitting frequency, obtain the flight time of signal;
The described flight time is multiplied by rate of signal propagation, so obtain successively between secondary part and each base station effective away from
From.
5. a kind of system of selection based on radio energy charge position region according to claim 4 is it is characterised in that institute
State the coverage obtaining between secondary part and each base station, further include:
Wireless carrier communication module signal radiation pattern on setting secondary part is broadcast mode;Nothing on described secondary part
After line carrier communication module distributes timing node to each base station, arranges the response time of each base station, and each base station receives broadcast frame,
Reenter reception state, wait the wireless carrier communication module on described secondary part to send claim frame;
After wireless carrier communication module on described secondary part sends claim frame, enter reception state, wait each base station to respond
Signal;
Each base station, according to the described response time of distribution before communication, sequentially sends Echo Frame to described secondary part;Send successfully
Afterwards, each base station enters reception state, waits described secondary part to send termination signal;
After described secondary part has received each base station Echo Frame, each key frame timestamp is packed into abort frame, with broadcaster
Formula is sent to corresponding base station;Each base station, after receiving label abort frame, parses the valid data in frame bag, obtains secondary part
Coverage and each base station between.
6. a kind of system of selection based on radio energy charge position region according to claim 3 is it is characterised in that institute
State the position fastened in described former limit partial coordinates determining secondary part, specifically include:
With each base station coordinates as the center of circle, the coverage between described secondary part and each base station is radius, determines three circles;
Using the described intersection point determining three circles, determine the position fastened in described former limit partial coordinates of secondary part.
7. a kind of system of selection based on radio energy charge position region according to claim 1 is it is characterised in that sentence
Whether the described secondary part that breaks is in charge position region, specifically includes:
The threshold value of anti-skew is set;Described threshold value represents to be fastened in former limit partial coordinates, described primary coil and described secondary portion
Divide the minimum range of skew;
The position fastened in described former limit partial coordinates according to described secondary part, calculates described secondary part and described former limit
Actual range between coil;
Relatively described threshold value and described actual range, judge whether described secondary part is in charge position region.
8. a kind of system of selection based on radio energy charge position region according to claim 7 is it is characterised in that institute
State beginning wireless charging, specifically include:
If described actual range is less than or equal to described threshold value, start wireless charging.
9. a kind of system of selection based on radio energy charge position region according to claim 7 is it is characterised in that institute
State and adjust described secondary part to charge position region, specifically include:
If described actual range is more than described threshold value it is determined that described secondary part is not at charge position region, calculate described
The distance of the required adjustment of secondary part;
According to described distance, described secondary part is adjusted to charge position region.
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CN108454420A (en) * | 2017-12-07 | 2018-08-28 | 中惠创智无线供电技术有限公司 | A kind of self-positioning alignment system and method for wireless charging for electric vehicle |
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CN113085638A (en) * | 2021-05-08 | 2021-07-09 | 河北省海纳电测仪器股份有限公司 | Shared charging method and system |
CN113675960A (en) * | 2021-07-23 | 2021-11-19 | 上海闻泰电子科技有限公司 | Wireless charging method, wireless charging device, electronic equipment and medium |
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