CN109660009A - With the wireless charging device with outer communication and auxiliary positioning function - Google Patents
With the wireless charging device with outer communication and auxiliary positioning function Download PDFInfo
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- CN109660009A CN109660009A CN201910011905.1A CN201910011905A CN109660009A CN 109660009 A CN109660009 A CN 109660009A CN 201910011905 A CN201910011905 A CN 201910011905A CN 109660009 A CN109660009 A CN 109660009A
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- 238000004891 communication Methods 0.000 title claims abstract description 155
- 238000007600 charging Methods 0.000 title claims abstract description 41
- 230000005540 biological transmission Effects 0.000 claims abstract description 88
- 238000000034 method Methods 0.000 claims description 8
- 239000003990 capacitor Substances 0.000 claims description 3
- 230000004807 localization Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000004364 calculation method Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
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- 238000004088 simulation Methods 0.000 description 1
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Classifications
-
- H02J7/025—
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/90—Circuit arrangements or systems for wireless supply or distribution of electric power involving detection or optimisation of position, e.g. alignment
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Near-Field Transmission Systems (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
It is a kind of with it is outer communication and auxiliary positioning function wireless charging device, it include: the power transmission coil of communication coil and energy transmission when for charging, power transmission coil and communication coil are concentrically disposed with, the frequency of power transmission coil is lower than the frequency of communication coil, is positioned using communication coil to power transmission coil.The present invention will communicate and energy transmission separates, and uses independent communication coil.Power transmission coil only carries out energy transmission, and energy loss caused by reducing because of modulation /demodulation improves the working efficiency of wireless charging.Communication and energy transmission use different frequencies, and energy transmission uses low frequency, and communication uses high-frequency.Communication use higher frequency so that the inductance value of coil compared with small, the number of turns is few, cost is relatively low, transmission range farther out, the data volume of transmission is larger.It using independent communication coil, can both play the role of data transmission, auxiliary transmission coil and receiving coil contraposition can also be played.
Description
Technical field
The invention belongs to wireless chargings/for electrical domain, especially in, high-power wireless having of filling/power with outer communication and
The wireless charging device of auxiliary positioning function.
Background technique
There are mainly two types of wireless charging communications at present: one is with interior communication, that is, using carrier wave (ASK and FSK)；It is another
It is using home control network communication protocol (bluetooth, WiFi, NFC etc.).But both modes have the disadvantage that:
(1) with interior communication: a. communication distance is too short, only more than ten millimeter, cannot establish communication apart from remote receiving end
Connection, causes the experience of client very bad；B. fundamental wave is modulated, reduces efficiency of transmission, cause to increase heat consumption；C. by
Lower in the frequency of fundamental wave, the speed for transmitting data is very slow, and many safety and authentication policy can not effectively be implemented.
(2) home control network communication protocol: a. communication distance is too long, can achieve more than ten meters, more than many equipment all have now
Wireless communication function causes timely identify which is the wireless charging device for needing to connect；B. communication distance is too long
Another drawback caused is exactly, multiple wireless charging devices together when, cause to communicate transmitting terminal and receiving end connection error；
C. bluetooth is not turned in many equipment or WiFi function leads to not charge；D. cost is relatively high.
In order to solve the problems, such as two above, a kind of communication distance of the present invention is moderate, and communication speed is fast, and cost is relatively low, and
It can carry out the outer mechanics of communication of wireless charging band of auxiliary positioning function.
Summary of the invention
The present invention provides a kind of with the outer wireless charging device communicated with auxiliary positioning function, and communication distance is suitable
In, communication speed is fast, and cost is relatively low, and can carry out auxiliary positioning.
To solve the above problems, being provided a kind of with outer communication and auxiliary positioning as one aspect of the present invention
The wireless charging device of function, comprising: the power transmission coil 2 of communication coil 1 and energy transmission when for charging, the function
Rate transmission coil 2 and communication coil 1 are concentrically disposed with, and the frequency of the power transmission coil 2 is lower than the frequency of the communication coil 1
Rate positions the power transmission coil 2 using the communication coil 1.
Preferably, the communication coil 1 is located at the inside and or outside of the power transmission coil 2, the preferably described function
The inner side and outer side of rate transmission coil 2 is each provided with one or more communication coils 1.
Preferably, the communication coil 1 uses series resonance or parallel resonance, and the frequency values of the communication coil 1 select
In ISM high-frequency band, wherein use ASK when communication reception -> transmitting, use FSK or PSK when communicating transmitting -> reception.
Preferably, the series resonance include the first coil L3 being arranged in series, first capacitor C3 and for signal into
The processor D1, the processor D1 of row modulation /demodulation processing pass to wireless charging by IIC, CAN, SPI or MQTT agreement
Electric control chip provides data transfer path for wireless charging energy transmission.
Preferably, the communication coil 1 in 2 outside of power transmission coil is for realizing rough positioning function, institute
The communication coil 1 of 2 inside of power transmission coil is stated for realizing accurate positioning.
Preferably, real-time communication is carried out by each communication coil 1 of switching.
Preferably, the localization method of the communication coil 1 is as follows: if being located at the connection in 2 outside of power transmission coil
The area of circle 1 is much larger than the area of the power transmission coil 2 of inside, since area is bigger, so communication distance is distant, logical
News range is bigger, not can be carried out effective transmission in the edge energy transmission that communication signal is established at this time or efficiency compares
It is low, it is therefore desirable to which that accurate auxiliary positioning is carried out to guarantee the optimal efficiency of transmission of energy by the lesser communication coil 1 in inside；
Or if the area of outside communication coil 1 is slightly larger than power transmission coil 2, energy transmission simultaneously can after communication coil establishes communication
To carry out, it is only necessary to it is mobile in communication context, find the point of maximum transmitted efficiency；Or if there was only inside communication coil 1,
As long as receiving coil designed size is moderate, as long as can establish communication is ceiling capacity transfer point, do not need secondary in progress
Positioning.
Preferably, the auxiliary positioning includes: that the communication coil on the outside of first switching to is communicated, when communication is established
Afterwards, it moves in X direction, and calculates charge efficiency, move and start when charge efficiency starts to incrementally increase, and finds efficiency maximum point
To Y-direction movement and computational efficiency is started simultaneously at, while the communication coil for being switched to inside exactly receives if can communicate
Coil and transmitting coil efficiency maximum point, to realize precise positioning.
Preferably, the auxiliary positioning specifically includes: it is mobile according to X-direction after communication coil on the outside establishes connection,
Charge efficiency is calculated simultaneously, if efficiency increases, it is mobile to continue X-direction；Communication coil while mobile on the inside of switching, such as
Communication coil on the inside of fruit can establish connection, then positions completion.
Preferably, the auxiliary positioning is specific further include: when efficiency, which starts, to be reduced, movement starts mobile same to Y-direction
When start computational efficiency, while be switched to inside communication coil, if can communicate, positioning complete；It is switched to after the completion of positioning
The communication coil in outside is communicated.
The present invention will communicate and energy transmission separates, and uses independent communication coil.Power transmission coil only carries out
Energy transmission, energy loss caused by reducing because of modulation /demodulation, improves the working efficiency of wireless charging.Communication and energy transmission make
With different frequencies, energy transmission uses low frequency, and communication uses high-frequency.Communication uses higher frequency, so that coil
Inductance value compared with small, the number of turns is few, cost is relatively low, transmission range farther out, the data volume of transmission is larger.Using independent communication coil,
Both it can play the role of data transmission, auxiliary transmission coil and receiving coil contraposition can also be played.
Detailed description of the invention
Structural schematic diagram when Fig. 1 schematically shows communication coil on the outside of power coil；
Structural schematic diagram when Fig. 2 schematically shows communication coils on the inside of power coil；
Fig. 3 schematically shows structural schematic diagram when communication coil is located at power coil two sides；
Fig. 4 schematically shows communication coil circuit connection diagram；
Fig. 5 schematically shows two communication coil circuit connection diagrams；
Fig. 6 schematically shows the movement schematic diagram of assisted location method；
Fig. 7 schematically shows the flow chart of auxiliary positioning.
Appended drawing reference in figure: 1, communication coil；2, power transmission coil.
Specific embodiment
The embodiment of the present invention is described in detail below in conjunction with attached drawing, but the present invention can be defined by the claims
Implement with the multitude of different ways of covering.
Mistake caused by the present invention mainly solution wireless charging communication connects and data transfers are too small and cannot achieve standard
True orientation problem, cost is relatively low, communication speed is fast, high-efficient, while can also carry out auxiliary positioning to power transmission coil,
It is increased without additional positioning device.
The present invention will communicate and energy transmission separates, and uses independent communication coil.Power transmission coil only carries out
Energy transmission, energy loss caused by reducing because of modulation /demodulation, improves the working efficiency of wireless charging.Communication and energy transmission make
With different frequencies, energy transmission uses low frequency, and communication uses high-frequency.Communication uses higher frequency, so that coil
Inductance value compared with small, the number of turns is few, cost is relatively low, transmission range farther out, the data volume of transmission is larger.Using independent communication coil,
Both it can play the role of data transmission, auxiliary transmission coil and receiving coil contraposition can also be played.
The communication coil of data communication uses series resonance or parallel resonance.The resonance frequency of communication coil is f=1/
(2π√LC).The coil inductance at data transmitting end be L1, data transmission receive end-coil inductance value be L2, by
With capacitor, keep transmitting terminal equal with the resonance frequency of end-coil is received, i.e. f1=f2.The value of f is selected in ISM high-frequency band.?
The signal to be transmitted is loaded on data line circle.Reception -> transmitting is communicated, using ASK.Transmitting -> reception is communicated, using FSK
Or PSK.
Communication coil can be used for auxiliary power coil in alignment and positioning.Wireless charging is to transmitting coil and receiving coil face
Position, it is desirable that relatively high, aligned in position can improve efficiency, and reduce energy loss.If power emission and receiving coil area compared with
Greatly, communication coil is located on the outside of power coil, needs to carry out simulation calculation to communication coil size, makes power coil overlapping area
When reaching certain value A, communication connection is established.It can carry out Position Approximate positioning.If requiring to compare to the contraposition of function rate coil
Strictly, communication coil is located on the inside of transmitting coil.Since communication coil positive area is smaller.More accurate alignment may be implemented
And positioning.
Using independent communication coil, without being modulated in power transmission coil, so that communication efficiency is improved, due to
The frequency that independent communication coil uses is higher.There can be biggish data transfers, in addition to the basic data interaction of wireless charging
It is outer with transmission, additional data can also be transmitted.Such as may be implemented: customized data transmission, Push Service and interior are fixed
Position, the functions such as payment link, can become wireless charging one data terminal.Positioning function is carried out using one or more coils
Also within the protection scope of this patent.
In the following, being carried out as described below in the present invention with outer communication:
As shown in Figure 1, communication coil can both be placed on the outside of power transmission coil；It can also be as shown in Fig. 2, connection
Circle is placed on the inside of power transmission coil；It can also be as shown in figure 3, placing two communication coils, one is placed on power transit line
The inside of circle, another is placed on the outside of power transmission coil.Similarly multiple communication coils are placed also herein in power coil inside
Within scope of patent protection.
The connection type of communication coil is as shown in Figure 4: coil L3 and C3 collectively constitute series resonant circuit, then by handling
Device D1 is modulated demodulation process to signal.And wireless charging is passed to by IIC, CAN, SPI or MQTT agreement and controls core
Piece provides data transfer path for wireless charging energy transmission.
As shown in figure 5, D1 can also connect two coils simultaneously.One is located on the outside of power coil, and one is located at power
On the inside of coil.Big coil may be implemented rough positioning function, and small coil is since communication distance is shorter, and communication context is smaller,
It may be implemented to be accurately positioned.Real-time communication can be carried out by two communication coils of switching.Similarly more than two coil is answered
With also within this scope of patent protection.
Auxiliary positioning function can be realized by communication coil, to guarantee that wireless charging transmitting coil and receiving coil are realized
The power transmission of maximal efficiency reduces energy loss, and specific localization method is as follows:
(1) if the power transmission coil much larger than inside for the communication coil being located on the outside of power transmission coil, due to
Area is bigger, so communication distance is distant, and the range communicated is bigger.At this time at the edge that communication signal is established
Place, energy transmission not can be carried out effective transmission or efficiency is relatively low.Therefore, it is also desirable to which the lesser communication coil in inside carries out
It is accurately positioned to guarantee the optimal efficiency of transmission of energy.This scene is suitable for high-power unmanned or unattended intelligence
Robot, industrial robot and electric car field.
(2) if the area of outside communication coil is slightly larger than power transmission coil, after communication coil establishes communication, energy is passed
It is defeated while can carry out, it is only necessary to it is mobile in communication context, find the point of maximum transmitted efficiency.This scene is suitable for medium and small
The unmanned or unattended intelligent robot of power wireless charging, industrial robot field or consumer domain.
(3) if there was only inside communication coil, as long as receiving coil designed size is moderate, as long as communication can be established,
It is ceiling capacity transfer point, therefore does not need carrying out secondary positioning.It is more solid that this scene is suitable for power transmission coil position
Fixed field has structure to be defined position.Such as electric tool, medical instrument field.
As shown in fig. 7, the method for realizing auxiliary positioning includes: to first switch to outer coil to be communicated, when communication is built
After vertical, move in X direction, and calculate charge efficiency, when charge efficiency starts to incrementally increase, and finds efficiency maximum point.Movement
Start to start simultaneously at computational efficiency to Y-direction movement, while being switched to inside communication coil, if can communicate.Exactly receive
Coil and transmitting coil efficiency maximum point.To realize precise positioning.Guarantee energy maximum transmitted efficiency, avoids energy dissipation.
Specific auxiliary positioning control flow chart: after outside communication coil (i.e. communication coil 1) establishes connection, according to X-direction
It is mobile, while charge efficiency is calculated, if efficiency increases, it is mobile to continue X-direction.The communication coil on the inside of switching while mobile
(i.e. communication coil 2).If inside communication coil can establish connection, completion is positioned.When efficiency, which starts, to be reduced.Movement is opened
Begin to start simultaneously at computational efficiency to Y-direction movement, while being switched to inside communication coil, if can communicate, positioning is completed.It is fixed
Outer coil is switched to after the completion of position to be communicated.
The invention has the following advantages that
(1) for cost is relatively low and the mechanicss of communication such as existing bluetooth and NFC, cost has very big reduction, and not
Industry/international standard certification is needed, the expense of certification can also reduce very much.
(2) data volume for comparing transmission with communication in existing wireless charging band is larger.Existing wireless charging uses band
Interior mechanics of communication, since the frequency of fundamental wave is lower, data volume is very limited.Many services and function are unable to satisfy.It cannot be direct
As data terminal come using.
(3) positioning function may be implemented.Auxiliary positioning function may be implemented by communication coil, certainly to industry, automobile etc.
Automatic auxiliary positioning function is realized in dynamicization/unattended field, without increasing additional auxiliary positioning device.
(4) it improves efficiency.Power loss caused by being reduced using independent communication channel because of modulation
(5) stability is improved.Data modem mistake, Wu Faji will not be caused because of the shake and variation of power transmission
When responding power control and security strategy demand.It causes system unstable or causes safety accident.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of with the wireless charging device with outer communication and auxiliary positioning function characterized by comprising
The power transmission coil (2) of communication coil (1) and energy transmission when for charging, the power transmission coil (2) and
Communication coil (1) is concentrically disposed with, and the frequency of the power transmission coil (2) is lower than the frequency of the communication coil (1), is utilized
The communication coil (1) positions the power transmission coil (2).
2. wireless charging device according to claim 1, which is characterized in that the communication coil (1) is located at the power
The inner side and outer side of the inside and or outside of transmission coil (2), the preferably described power transmission coil (2) is each provided with one
Or multiple communication coils (1).
3. wireless charging device according to claims 1 and 2, which is characterized in that the communication coil (1) is humorous using connecting
The frequency values of vibration or parallel resonance, the communication coil (1) are selected in ISM high-frequency band, wherein are adopted when communication reception -> transmitting
With ASK, FSK or PSK is used when communicating transmitting -> reception.
4. wireless charging device according to claim 1, which is characterized in that the series resonance includes be arranged in series
One coil (L3), first capacitor (C3) and the processor (D1) for being modulated demodulation process to signal, the processor
(D1) wireless charging control chip is passed to by IIC, CAN, SPI or MQTT agreement, is provided for wireless charging energy transmission
Data transfer path.
5. wireless charging device according to claim 2, which is characterized in that the institute on the outside of the power transmission coil (2)
The communication coil (1) that communication coil (1) is stated for realizing rough positioning function, on the inside of the power transmission coil (2)
For realizing accurate positioning.
6. wireless charging device according to claim 2, which is characterized in that pass through each communication coil of switching
(1) real-time communication is carried out.
7. wireless charging device according to claim 2, which is characterized in that the localization method of the communication coil (1) is such as
Under:
If the area for the communication coil (1) being located on the outside of power transmission coil (2) is much larger than the power transmission coil (2) of inside
Area so communication distance is distant, communication context is bigger, established at this time in communication signal since area is bigger
Edge energy transmission not can be carried out effective transmission or efficiency is relatively low, it is therefore desirable to pass through the lesser communication coil in inside
(1) accurate auxiliary positioning is carried out to guarantee the optimal efficiency of transmission of energy；Or
If the area of outside communication coil (1) is slightly larger than power transmission coil (2), communication coil establishes energy transmission after communication
It can carry out simultaneously, it is only necessary to it is mobile in communication context, find the point of maximum transmitted efficiency；Or
If only inside communication coil (1), as long as receiving coil designed size is moderate, as long as can establish communication is maximum
Energy transmission point does not need carrying out secondary positioning.
8. wireless charging device according to claim 7, which is characterized in that the auxiliary positioning includes:
The communication coil for first switching to outside is communicated, and after communicating foundation, is moved in X direction, and calculate charge efficiency,
When charge efficiency starts to incrementally increase, and finds efficiency maximum point, movement starts mobile to Y-direction and starts simultaneously at computational efficiency,
It is switched to the communication coil of inside simultaneously, is exactly receiving coil and transmitting coil efficiency maximum point if can communicate, thus real
Existing precise positioning.
9. wireless charging device according to claim 8, which is characterized in that the auxiliary positioning specifically includes:
It is mobile according to X-direction after communication coil on the outside establishes connection, while charge efficiency is calculated, if efficiency increases, after
Continuous X-direction is mobile；
Communication coil while mobile on the inside of switching positions completion if the communication coil of inside can establish connection.
10. wireless charging device according to claim 9, which is characterized in that the auxiliary positioning is specific further include:
When efficiency, which starts, to be reduced, movement starts to start simultaneously at computational efficiency to Y-direction movement, while being switched to inside connection
Circle, if can communicate, positioning is completed；
The communication coil that outside is switched to after the completion of positioning is communicated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910011905.1A CN109660009A (en) | 2019-01-07 | 2019-01-07 | With the wireless charging device with outer communication and auxiliary positioning function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910011905.1A CN109660009A (en) | 2019-01-07 | 2019-01-07 | With the wireless charging device with outer communication and auxiliary positioning function |
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| CN201910011905.1A Pending CN109660009A (en) | 2019-01-07 | 2019-01-07 | With the wireless charging device with outer communication and auxiliary positioning function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110549881A (en) * | 2019-04-29 | 2019-12-10 | 北京有感科技有限责任公司 | mobile wireless charging ground transmitting equipment for electric automobile |
| CN111555418A (en) * | 2020-04-10 | 2020-08-18 | 华为技术有限公司 | Receiving end, system and method of wireless charging system |
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| JP2011205829A (en) * | 2010-03-26 | 2011-10-13 | Honda Motor Co Ltd | Noncontact charging system |
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