CN104218636A - Positioning method and positioning system for wireless charging - Google Patents
Positioning method and positioning system for wireless charging Download PDFInfo
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- CN104218636A CN104218636A CN201410401036.0A CN201410401036A CN104218636A CN 104218636 A CN104218636 A CN 104218636A CN 201410401036 A CN201410401036 A CN 201410401036A CN 104218636 A CN104218636 A CN 104218636A
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Abstract
The invention relates to the field of wireless charging, provides a positioning method and a positioning system for wireless charging and aims to solve the problem of low wireless charging efficiency caused by inaccurate position matching of a charging transmitting antenna and a charging receiving antenna during charging according to existing wireless charging techniques. The system comprises a charging transmitting device, a charging transmitting antenna, a charging receiving antenna, a charging receiving device, at least three auxiliary transmitting positioning antennas and at least three auxiliary sending positioning antennas. By the positioning method and the positioning system for wireless charging, positions of the transmitting antenna and the receiving antenna can be better matched to improve wireless charging efficiency. The positioning method and the positioning system for wireless charging are mainly applied to the field of wireless charging of electric vehicles and convenient for promotion and popularization of the electric vehicles.
Description
[technical field]
The present invention relates to wireless charging field, the navigation system in especially a kind of wireless charging and method.
[background technology]
Wireless power technology (Contactless Power Supply, CPS), electric energy transmission technology (InductiveCoupled Power Transmission is closed also referred to as induction misfortune, ICPT), contactlessly poweredly refer to that transmission line and load side are at not electrical connection and physical contact, even when they ask in addition relative motion, complete the transmission of electric energy.The theoretical foundation of contactlessly powered technology is electromagnetic induction principle, utilized modern electric electricity energy conversion technology, magnetic field misfortune conjunction technology, by means of modern control theory and micro-electricity control technology, realizes energy from static equipment to the transmission of movable equipment.
Along with the propelling day by day of process of industrialization, the electronic vehicles get more and more, electric motor car has been applied in the life of people widely, electric automobile also progressively meets the needs of the market, its power of electric automobile generally adopts storage battery power supply mode, and it is much less than traditional motor vehicle emission amount, very little on the impact of environment, unanimously appeal in the whole world to strengthen today of environmental protection, advantages such as its nonstaining property of electric automobile one determining cause and easily expansion and obtain fast development and extensive use.If adopt traditional power supply unit to carry out charging to vehicle have a lot of disadvantageous place, comprised multiconductor existence, dangerous, also have the infringement of outdoor wired charging pile.A kind of new charging technique is needed to carry out alternative existing supply power mode with regard to needing for this electrical equipment at automotive interior.Wireless charging just can solve these problems, as long as wireless charging has parking stall just can charge to electric automobile, even just can charge to automobile in vehicle traveling process, these advantages are beneficial to the penetration and promotion of electric automobile all very much.
But when adopting existing wireless charging technology to charge, charging transmitting antenna is accurate not with the location matches of charging reception antenna, result in the problem that wireless charging efficiency is lower.
[summary of the invention]
The invention provides the navigation system in a kind of wireless charging and method, when adopting existing wireless charging technology to charge in order to solve, charging transmitting antenna is accurate not with the location matches of charging reception antenna, result in the problem that wireless charging efficiency is lower.
Navigation system in a kind of wireless charging of the present invention, be applied to the wireless charging of motor vehicle, comprise: charging emitter, charging transmitting antenna, charging reception antenna and charging receiver, also comprise: at least 3 auxiliary transmission positioning antennas and at least 3 auxiliary reception positioning antennas; Wherein, at least 3 described auxiliary transmission positioning antennas be positioned at charging transmitting antenna surrounding and with charging transmitting antenna tranmitting frequency not identical; At least 3 described auxiliary reception positioning antennas be positioned at charging reception antenna surrounding and with charging reception antenna receive frequency not identical; Described charging receiver is by each described auxiliary reception positioning antenna, obtain the positioning signal strength that each described auxiliary transmission positioning antenna sends, according to described each positioning signal strength and the position relationship between default each auxiliary transmission positioning antenna and auxiliary reception positioning antenna, the wireless charging position of adjustment motor vehicle.
Wherein, the auxiliary transmission positioning antenna described in each possesses independently assist location transmitting chain, and the auxiliary reception positioning antenna described in each possesses independently assist location receiver.
Wherein, the auxiliary transmission positioning antenna described at least 2 shares an assist location transmitting chain, sends framing signal by each auxiliary transmission positioning antenna of switching on this assist location transmitting chain; And few auxiliary reception positioning antenna described in 2 shares an assist location receiver, receives framing signal by each auxiliary reception positioning antenna of switching on this assist location receiver.
Wherein, described charging emitter comprises: charge control module, and the charging transmitter module be connected respectively with described charge control module and the detection module that charges; Charge control module controls the process of charging, and is connected with electric power system background control system, and the requirement according to the background system of Utilities Electric Co. is charged to vehicle; Charging detection module is used for the efficiency of inverse detection charging and the frequency of charging; Power supply signal is changed into radio frequency signal by charging transmitter module, and by described charging transmission antennas transmit.
Localization method in a kind of wireless charging of the present invention, comprises the following steps: S1, auxiliary transmission positioning antenna sends framing signal; S2, auxiliary reception positioning antenna receive framing signal; S3, according to each positioning signal strength received in step S2 and the position relationship between default each auxiliary transmission positioning antenna and auxiliary reception positioning antenna, adjustment motor vehicle wireless charging position; The navigation system in above-mentioned wireless charging is adopted to implement.
Wherein, also comprise in step S1: the auxiliary transmission positioning antenna described in each has unique No. ID, and in the framing signal sent, carry this No. ID.
Wherein, specifically comprise in step S2: the framing signal that each auxiliary transmission positioning antenna of auxiliary reception positioning antenna continuous reception described in each sends; And, specifically comprise in step S3: described charging receiver extracts the strength information of framing signal described in each, and according to each positioning signal strength of each auxiliary reception positioning antenna reception and the position relationship between default each auxiliary transmission positioning antenna and auxiliary reception positioning antenna, use geometrical principle to determine position relationship and the distance of described charging transmitting antenna and charging reception antenna.
One charging emission system of the present invention, be applied to the wireless charging of motor vehicle, comprise: charging emitter, charging transmitting antenna, and at least 3 auxiliary transmission positioning antennas, at least 3 described auxiliary transmission positioning antennas be positioned at charging transmitting antenna surrounding and with charging transmitting antenna tranmitting frequency not identical; Described charging emitter outwards launches radio frequency signal by charging transmitting antenna; Described auxiliary transmission positioning antenna outwards sends framing signal.
One charging receiving system of the present invention, be applied to the wireless charging of motor vehicle, charging reception antenna, charging receiver, and at least 3 auxiliary reception positioning antennas, at least 3 described auxiliary reception positioning antennas be positioned at charging reception antenna surrounding and with charging reception antenna receive frequency not identical; Described charging receiver receives radio frequency signal by charging reception antenna; Described auxiliary reception positioning antenna receives framing signal, and obtains each positioning signal strength by charging receiver, according to described each positioning signal strength and default position relationship, and the wireless charging position of adjustment motor vehicle.
The present invention can make transmitting antenna and reception antenna better carry out location matches, improves the efficiency of wireless charging.Mainly be used in electric automobile wireless charging field, be convenient to the popularization of electric automobile and popularize.
[accompanying drawing explanation]
Fig. 1 is the structural representation of the wireless charging navigation system in the embodiment of the present invention 1;
Fig. 2 is the internal module structural representation of the charging emitter 11 in the embodiment of the present invention 1;
Fig. 3 is the schematic diagram of the link assignment mode 1 in the embodiment of the present invention 1;
Fig. 4 is the schematic diagram of the link assignment mode 2 in the embodiment of the present invention 1;
Fig. 5 is the concrete scheme of installation of charging emitter in the embodiment of the present invention 1;
Fig. 6 is the localization method flow chart in the wireless charging in the embodiment of the present invention 2;
Fig. 7 is the charging emission system structural representation in the embodiment of the present invention 3;
Fig. 8 is that the charging in the embodiment of the present invention 4 receives system configuration schematic diagram.
[embodiment]
Study discovery through inventor, the antenna of charging transmitting antenna, charging reception antenna mainly coil form, the energy transferring of wireless charging mainly relies on the coupling between two transmit receive antennas to reach the effect of energy transferring.The efficiency of whole energy transferring is directly related with the coupling effect between two antennas, when there is deviation in position in dual-mode antenna, the magnetic flux of charging transmitting antenna does not enter charging reception antenna with regard to some, the energy of the transmission between such two antennas will reduce, and the position relationship therefore studied between two antennas is just very necessary.Inventor considers, if by the multiple assist location antennas adding other frequencies around charging transmitting antenna, around charging reception antenna, corresponding multiple assist location antennas coordinate with it, the judgement of position is carried out by the communication between the auxiliary antenna of correspondence, thus the dual-mode antenna of wireless charging is mated in position, and then reach raising efficiency of transmission, the object of conserve energy.Be described in detail by the following examples.
Navigation system in the wireless charging of embodiment 1, the present embodiment, be mainly used in the wireless charging of motor vehicle, shown in Figure 1, comprise: charging emitter 11, charging transmitting antenna 12, charging reception antenna 13 and charging receiver 14, also comprise: at least 3 auxiliary transmission positioning antennas 15, be positioned at charging transmitting antenna 12 surrounding and with charging transmitting antenna 12 tranmitting frequency not identical; And, (auxiliary reception positioning antenna 16 needs to carry out signal transacting to received signal at least 3 auxiliary reception positioning antennas 16, FPGA or dsp chip can be adopted, be convenient to the timely process of information), be positioned at charging reception antenna 13 surrounding and with charging reception antenna 13 receive frequency not identical.Charging receiver 14 is by each auxiliary reception positioning antenna 16, obtain the positioning signal strength that each auxiliary transmission positioning antenna 15 sends, according to each positioning signal strength and the position relationship between default each auxiliary transmission positioning antenna 15 and auxiliary reception positioning antenna 16, the wireless charging position of adjustment motor vehicle, the i.e. position relationship of adjustment charging transmitting antenna 12 and charging reception antenna 13, and then position is mated mutually, reach Best Coupling effect, improve wireless charging efficiency.
More specifically, the internal module structure of charging emitter 11 can be shown in Figure 2, comprising: charge control module 111, and the charging transmitter module 112 be connected respectively with charge control module 111 and the detection module 113 that charges.Wherein, charge control module 111 controls the whole process of charging, and is connected with electric power system background control system, and the requirement according to the background system of Utilities Electric Co. is charged to vehicle.Whether charging detection module 113 receiving feedback signals, for detecting the efficiency of charging, the frequency of charging and signal of communication, detect above charging device by charging device.Power supply signal is changed into radio frequency signal by charging transmitter module 112, is launched by antenna 12.
Owing to there is the auxiliary reception positioning antenna 16 of multiple auxiliary transmission positioning antenna 15 and respective amount, therefore need the problem solving link assignment, in the present embodiment, propose 2 kinds of methods of salary distribution.
The method of salary distribution 1 can be shown in Figure 3, each auxiliary transmission positioning antenna 15 possesses independently assist location transmitting chain, under the control of the countdown circuit in charge control module 111, each auxiliary transmission positioning antenna 15 sends framing signal by the assist location transmitting chain of oneself.In like manner, each auxiliary reception positioning antenna 16 also possesses independently assist location receiver, and under the control of charging receiver 14, each auxiliary reception positioning antenna 16 receives framing signal by the assist location receiver of oneself.
The method of salary distribution 2 can be shown in Figure 4, at least 2 auxiliary transmission positioning antennas 15 share an assist location transmitting chain, under the control of the countdown circuit in charge control module 111, switch each auxiliary transmission positioning antenna by switch 114 and send framing signal on this assist location transmitting chain; In like manner, at least 2 auxiliary reception positioning antennas 16 share an assist location receiver, under the control of charging receiver 14, switch each auxiliary reception positioning antenna 16 receive framing signal by switch 144 on this assist location receiver.
In specific implementation, charging emitter 11 is arranged on the front end on parking stall, and existing Utilities Electric Co. network used by ground charging device, powered by Utilities Electric Co.'s power cable, parking stall is transformed, the function that wireless charging device makes it have wireless charging is installed.Shown in Figure 5, charging emitter 11 is connected by cable with charging transmitting antenna 12, carries out energy transferring between transmitting coil and parasitic coil by Space Coupling.The watchcase of charging emitter 11 adopts the non-metallic material of hard to make (one side towards automobile), is convenient to electromagnetic projection, facilitates wireless charging.Circuit part is produced within housing, and protective circuit is not by external damage, and waterproof anti-corrosion.Charging transmitting antenna 12 adopts external antenna, is centered around charging emitter 11 peripheral, and the mode of the copper pipe that charging transmitting antenna 12 adopts diameter thicker, copper pipe surface scribbles three anti-paints, surrounds the mode of 3 dimension coils, can be used for long term outdoor engineering.Charging transmitting antenna 12 and circuit part re-use the lower face that outer cover packaging gets up to be arranged on charging emitter 11, make it integration.The frequency that auxiliary transmission positioning antenna 15 adopts is different from charging transmitting antenna 12, auxiliary transmission positioning antenna 15 and circuit are also installed together with charging transmitting antenna 12, auxiliary transmission positioning antenna 15 provides in advance with the relative position relation of charging transmitting antenna 12, auxiliary transmission positioning antenna 15 is distributed in charging transmitting antenna 12 around, auxiliary transmission positioning antenna 15 adopts the mode of PCB antenna, is convenient to install.
Localization method in the wireless charging of embodiment 2, the present embodiment, can adopt the System Implementation of above-described embodiment 1, shown in Figure 6, comprises following key step:
S21, auxiliary transmission positioning antenna send framing signal.
S22, auxiliary reception positioning antenna receive framing signal.
S23, according to each positioning signal strength received in step S22 and the position relationship between default each auxiliary transmission positioning antenna and auxiliary reception positioning antenna, adjustment motor vehicle wireless charging position.
In specific implementation, by adding multiple auxiliary transmission positioning antennas of other frequencies around transmitting antenna, positioning antenna is at least 3.The position relationship of the assist location antenna of transmitting terminal and receiving terminal provides in advance.Each little assist location antenna has oneself No. ID, and the quick time division emission of several assist location antennas contains the signal of self-ID information.Also multiple little auxiliary reception positioning antenna is had around reception antenna, each reception assist location antenna constantly receives the signal launched assist location antenna and send, and carry out the extraction of signal magnitude, each reception assist location antenna receives different difference of launching the size of assist location antenna transmission signal by comparing, use basic geometrical principle to determine position and distance, thus the judgement of rough location can be carried out.Carry out double analysis again between multiple reception positioning antenna, thus draw clear and definite positional information, improve precision.According to positional information, the dual-mode antenna of wireless charging carries out the adjustment of position again, the dual-mode antenna of wireless charging is mated in position, thus reaches raising efficiency of transmission, the object of conserve energy.More specifically, multiple auxiliary transmission positioning antennas of transmitting terminal are subject to the unified of countdown circuit and control, can time division emission, and the ID signal containing antenna in the information of each transmitting chain is given by control circuit, each transmitting positioning antenna self can have a transmitting chain (can see Fig. 3), also can the public transmitting chain of multiple transmitting positioning antenna (can see Fig. 4), by the transmitting of Switch Control antenna.And the id information of this antenna is contained when launching information, be convenient to the reception receiving assist location antenna.Receive the signal that assist location antenna receives, by judging corresponding id information, thus learn it is the information which transmitting positioning antenna is launched, and the stored energy of the signal received is being received in control chip, when obtaining multiple Received signal strength, according to the position relationship of transmitting and receiving end assist location antenna provided, according to the difference of size receiving signal, obtain corresponding positional information by geometrical principle.Thus reach the object of location.
The one charging emission system of embodiment 3, the present embodiment can be the combination of the charging emitter 11 in above-described embodiment 1, charging transmitting antenna 12 and auxiliary transmission positioning antenna 15.Shown in Figure 7, specifically comprise: charging emitter 31, charging transmitting antenna 32, and at least 3 auxiliary transmission positioning antennas 33, at least 3 described auxiliary transmission positioning antennas 33 be positioned at charging transmitting antenna 32 surrounding and with charging transmitting antenna 32 tranmitting frequency not identical; Charging emitter 31 outwards launches radio frequency signal by charging transmitting antenna 32; Auxiliary transmission positioning antenna 33 outwards sends framing signal.
Embodiment 4, a kind of charging receiving system can be that the charging reception antenna 13 in above-described embodiment 1, charging receiver 14 and auxiliary reception positioning antenna 16 combine.Shown in Figure 8, specifically comprise: charging reception antenna 41, charging receiver 42, and at least 3 auxiliary reception positioning antennas 43, at least 3 described auxiliary reception positioning antennas 43 need to carry out signal transacting to received signal, FPGA or dsp chip can be adopted, be convenient to the timely process of information, its be positioned at charging reception antenna 41 surrounding and with charging reception antenna 41 receive frequency not identical; Charging receiver 42 receives radio frequency signal by charging reception antenna 41; Auxiliary reception positioning antenna 43 receives framing signal, and obtains each positioning signal strength by charging receiver 42, according to described each positioning signal strength and default position relationship, and the wireless charging position of adjustment motor vehicle.
In sum, advantage of the present invention is as follows:
1, have employed the mode of wireless charging device, use existing electric power networks circuit, be arranged on the front on parking stall, engineered smaller, economical and practical, be convenient to popularizing of wireless charging.
2, when common metal is placed on charging antenna, it is different on the charging impact of aerial voltage and the impact of coil antenna, we are by the difference of these feedback influences of inverse detection thus judge whether it is charge coil antenna, whether suitablely detect vehicle stand.
3, for different by fill device, we by detecting the change of voltage, thus control charging voltage by communication control module, and then adjustment transmitting power.
4, by the control of photovoltaic conversion module, we can adjust the resonance frequency of coil antenna, and then can form resonance coupling with the charging antenna of vehicle-mounted part, are beneficial to the efficiency improving wireless charging.And each coil in multi-coil exists adjustable electric capacity, corresponding frequency can be adjusted.
5, each reception assist location antenna constantly receives the signal launched assist location antenna and send, and carry out the extraction of signal magnitude, each reception assist location antenna receives different difference of launching the size of assist location antenna transmission signal by comparing, use basic geometrical principle to determine position and distance, thus the judgement of just slightly position can be carried out
6, carry out double analysis again between multiple reception positioning antenna, thus draw clear and definite positional information, improve precision.
7, according to positional information, the dual-mode antenna of wireless charging carries out the adjustment of position again, the dual-mode antenna of wireless charging is mated in position, thus reaches raising efficiency of transmission, the object of conserve energy.
Here description of the invention and application are all illustrative and schematic, are not to want by scope restriction of the present invention in the above-described embodiments.Distortion and the change of embodiment disclosed are here completely possible, and for those those of ordinary skill in the art, the replacement of embodiment and the various parts of equivalence are all known.Those skilled in the art it is also clear that, when not departing from spirit of the present invention or substantive characteristics, the present invention can in other forms, structure, layout, ratio, and realize with other assembly, material and parts, and when not departing from the scope of the invention and spirit, can other distortion be carried out here to disclosed embodiment and change.
Claims (9)
1. the navigation system in a wireless charging, be applied to the wireless charging of motor vehicle, comprise: charging emitter, charging transmitting antenna, charging reception antenna and charging receiver, it is characterized in that, also comprise: at least 3 auxiliary transmission positioning antennas and at least 3 auxiliary reception positioning antennas;
Wherein, at least 3 described auxiliary transmission positioning antennas be positioned at charging transmitting antenna surrounding and with charging transmitting antenna tranmitting frequency not identical;
At least 3 described auxiliary reception positioning antennas be positioned at charging reception antenna surrounding and with charging reception antenna receive frequency not identical;
Described charging receiver is by each described auxiliary reception positioning antenna, obtain the positioning signal strength that each described auxiliary transmission positioning antenna sends, according to described each positioning signal strength and the position relationship between default each auxiliary transmission positioning antenna and auxiliary reception positioning antenna, the wireless charging position of adjustment motor vehicle.
2. the navigation system in wireless charging as claimed in claim 1, it is characterized in that, auxiliary transmission positioning antenna described in each possesses independently assist location transmitting chain, and the auxiliary reception positioning antenna described in each possesses independently assist location receiver.
3. the navigation system in wireless charging as claimed in claim 1, it is characterized in that, auxiliary transmission positioning antenna described at least 2 shares an assist location transmitting chain, sends framing signal by each auxiliary transmission positioning antenna of switching on this assist location transmitting chain; And few auxiliary reception positioning antenna described in 2 shares an assist location receiver, receives framing signal by each auxiliary reception positioning antenna of switching on this assist location receiver.
4. the navigation system in wireless charging as claimed in claim 1, it is characterized in that, described charging emitter comprises: charge control module, and the charging transmitter module be connected respectively with described charge control module and the detection module that charges;
Wherein, charge control module controls the process of charging, and is connected with electric power system background control system, and the requirement according to the background system of Utilities Electric Co. is charged to vehicle;
Charging detection module is used for the efficiency of inverse detection charging and the frequency of charging;
Power supply signal is changed into radio frequency signal by charging transmitter module, and by described charging transmission antennas transmit.
5. the localization method in wireless charging, is characterized in that, comprises the following steps:
S1, auxiliary transmission positioning antenna send framing signal;
S2, auxiliary reception positioning antenna receive framing signal;
S3, according to each positioning signal strength received in step S2 and the position relationship between default each auxiliary transmission positioning antenna and auxiliary reception positioning antenna, adjustment motor vehicle wireless charging position;
Above-mentioned steps adopts the navigation system in the wireless charging described in any one of Claims 1-4 to implement.
6. the localization method in wireless charging as claimed in claim 5, is characterized in that, also comprise in step S1: the auxiliary transmission positioning antenna described in each has unique No. ID, and in the framing signal sent, carry this No. ID.
7. the localization method in wireless charging as claimed in claim 5, is characterized in that, specifically comprise in step S2: the framing signal that each auxiliary transmission positioning antenna of auxiliary reception positioning antenna continuous reception described in each sends;
And, specifically comprise in step S3: described charging receiver extracts the strength information of framing signal described in each, and according to each positioning signal strength of each auxiliary reception positioning antenna reception and the position relationship between default each auxiliary transmission positioning antenna and auxiliary reception positioning antenna, use geometrical principle to determine position relationship and the distance of described charging transmitting antenna and charging reception antenna.
8. a charging emission system, be applied to the wireless charging of motor vehicle, it is characterized in that, comprise: charging emitter, charging transmitting antenna, and at least 3 auxiliary transmission positioning antennas, at least 3 described auxiliary transmission positioning antennas be positioned at charging transmitting antenna surrounding and with charging transmitting antenna tranmitting frequency not identical;
Described charging emitter outwards launches radio frequency signal by charging transmitting antenna;
Described auxiliary transmission positioning antenna outwards sends framing signal.
9. a charging receiving system, be applied to the wireless charging of motor vehicle, it is characterized in that, charging reception antenna, charging receiver, and at least 3 auxiliary reception positioning antennas, at least 3 described auxiliary reception positioning antennas be positioned at charging reception antenna surrounding and with charging reception antenna receive frequency not identical;
Described charging receiver receives radio frequency signal by charging reception antenna;
Described auxiliary reception positioning antenna receives framing signal, and obtains each positioning signal strength by charging receiver, according to described each positioning signal strength and default position relationship, and the wireless charging position of adjustment motor vehicle.
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| CN201410401036.0A CN104218636A (en) | 2014-08-14 | 2014-08-14 | Positioning method and positioning system for wireless charging |
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| CN201410401036.0A CN104218636A (en) | 2014-08-14 | 2014-08-14 | Positioning method and positioning system for wireless charging |
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| CN105078224A (en) * | 2015-07-17 | 2015-11-25 | 厦门越一电子科技有限公司 | Complete-intelligent water-boiling device, water-boiling system and control method |
| CN106655420A (en) * | 2016-11-14 | 2017-05-10 | 安徽天鹏电子科技有限公司 | Intelligent wireless charging type battery electric vehicle charging pile |
| CN108494038A (en) * | 2018-04-02 | 2018-09-04 | 徐州市工大三森科技有限公司 | cage wireless charging device and charging method |
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| CN110635821A (en) * | 2019-10-31 | 2019-12-31 | Oppo广东移动通信有限公司 | Radio frequency circuit and electronic equipment |
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Application publication date: 20141217 |