CN107068372B - The position of wireless charging receiver adjusts and uses coil - Google Patents
The position of wireless charging receiver adjusts and uses coil Download PDFInfo
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- CN107068372B CN107068372B CN201710449979.4A CN201710449979A CN107068372B CN 107068372 B CN107068372 B CN 107068372B CN 201710449979 A CN201710449979 A CN 201710449979A CN 107068372 B CN107068372 B CN 107068372B
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- 238000004804 winding Methods 0.000 claims abstract description 16
- 230000005540 biological transmission Effects 0.000 description 11
- 238000010586 diagram Methods 0.000 description 6
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 230000001939 inductive effect Effects 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/2823—Wires
- H01F27/2828—Construction of conductive connections, of leads
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/34—Special means for preventing or reducing unwanted electric or magnetic effects, e.g. no-load losses, reactive currents, harmonics, oscillations, leakage fields
- H01F27/36—Electric or magnetic shields or screens
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- H02J5/005—
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- H02J7/025—
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F38/00—Adaptations of transformers or inductances for specific applications or functions
- H01F38/14—Inductive couplings
- H01F2038/143—Inductive couplings for signals
Abstract
The position adjusting of wireless charging receiver of the invention has with coil: first coil group, comprising: positioned at the first coil of first layer；Positioned at the second coil of first layer；And positioned at the second layer and the first connecting line of the connection first coil and the second coil；With the second coil group, comprising: positioned at the tertiary coil of the second layer；Positioned at the 4th coil of the second layer；And positioned at first layer and the second connecting line of the connection tertiary coil and the 4th coil, the winding direction of the first coil and the second coil is on the contrary, the winding direction of the tertiary coil and the 4th coil is opposite.
Description
Technical field
The present invention relates to the position adjusting coils of wireless charging receiver.
Background technique
In recent years, the portable devices such as smart phone, smartwatch all started what support was wirelessly charged
Function.Realize that there are many mode of this wireless charging, wherein by it is most be in such a way that inductive coupling charges.Based on electricity
The charging that sense couples is using the coupling between two coils disconnected from each other, with the line of the coil and reception electric power that send electric power
The relative position of circle, distance difference, the efficiency of power transmission also can be different.
In the system wirelessly to charge, the equipment for transmitting electric power is set as transmitter, will be such as intelligent hand
When the equipment that machine receives electric power like that is set as receiver, when emplacing receiver is charged on transmitter, if receiver is certainly
Body is capable of deciding whether to be placed on correct charge position and can calculate efficiency, alternatively, receiver, which can guide, to be made
User is moved to correct charge position, so that it may power transmission efficiency is improved, to improve charge efficiency.
Using power transmission efficiency highest point in transmitter device as origin, if can be derived that distance away from this origin or
For person using it as the two-dimensional coordinate system of origin, user can adjust position of the receiver relative to transmitter, fill to improve
Electrical efficiency.In order to obtain for adjusting the two-dimensional coordinate system of the placement location of receiver, in addition to receiving charging power on receiver
Coil other than, it is necessary to multiple coils are separately set, construct coordinate system using the signal generated based on these coils.
Summary of the invention
The present invention completes in view of the foregoing, and its purpose is to provide can adjust wireless charging receiver relative to electricity
The placement location of power transmitter is to improve the position adjusting coil of the wireless charging receiver of charge efficiency.
The position adjusting coil of the wireless charging receiver of a mode of the invention is characterized in that having: First Line
Circle group, comprising: positioned at the first coil of first layer；Positioned at the second coil of first layer；And it is located at described in the second layer and connection
First connecting line of first coil and the second coil；With the second coil group, comprising: positioned at the tertiary coil of the second layer；Positioned at
Two layers of the 4th coil；And positioned at first layer and the second connecting line of the connection tertiary coil and the 4th coil, described the
The winding direction of one coil and the second coil is on the contrary, the winding direction of the tertiary coil and the 4th coil is opposite.
Preferably, one end of the first coil group is grounded, and the other end is signal output end, second coil group
One end is grounded, and the other end is signal output end.
Preferably, in the first layer, second connecting line not with the first coil and the second coil contact, in institute
State the second layer, first connecting line not with the tertiary coil and the 4th coil contact.
The position adjusting coil of the wireless charging receiver of another way of the invention is characterized in that having: first
Coil group, comprising: first coil and the second coil positioned at the both ends of a pair of of linea angulata of first layer；And it is located at the second layer and company
Connect the first connecting line of the first coil and the second coil；Second coil group, comprising: positioned at the another cornerwise of first layer
The tertiary coil at both ends and the 4th coil；And the second connection positioned at the second layer and the connection tertiary coil and the 4th coil
The winding direction of line, the first coil and the second coil is on the contrary, the winding direction of the tertiary coil and the 4th coil is opposite.
Preferably, one end of the first coil group is grounded, and the other end is signal output end, second coil group
One end is grounded, and the other end is signal output end.
Preferably, in the first layer, the first coil to the 4th coil is not in contact with each other, described in the second layer
First connecting line is not contacted with second connecting line.
According to the present invention, wireless charging receiver can know whether to be put by the position adjusting coil itself installed
It is placed on position corresponding with power transmission efficiency highest point in the transmitter of transmission electric power, and the line on two layers can be passed through
Circular pattern only analyzes the signal of two output nodes the placement location that can be constructed for adjusting wireless charging receiver
Coordinate system.
Detailed description of the invention
Fig. 1 is the top view for indicating the position adjusting coil of embodiments of the present invention 1.
Fig. 2 is the decomposition diagram of the first coil group and the second coil group in separately shown Fig. 1, and (a) indicates First Line
Circle group (b) indicates the second coil group.
Fig. 3 is the schematic diagram of the position Principles of Regulation of the position adjusting coil for explanatory diagram 1.
Fig. 4 is to indicate the signal of position adjusting coil output with the distance between power transmitter and power receiver
Changed figure, (a) indicate the relationship of amplitude and distance, (b) indicate the relationship of phase and distance.
Fig. 5 is the top view for indicating the position adjusting coil of embodiments of the present invention 2.
Specific embodiment
In the following description, the explanation that specific structure and explanation carry out just for the sake of being easier to understand the present invention,
The present invention can be implemented in various ways, however it is not limited to the mode that this specification is recorded.In addition, without departing from technology of the invention
In the range of thought, various changes, improvement etc. can be implemented to the present invention, these changes, improvement are all contained in protection of the invention
In range.
In addition, the terms such as " first " that uses in the following description, " second " can illustrate specific constituent element, but this
A little terms do not limit these constituent elements.These terms are only used for distinguishing each component.In addition, "upper", "lower" etc. indicate
The term in orientation is only used for indicating relative positional relationship.
Hereinafter, being explained with reference to a specific embodiment of the invention.
Embodiment 1
Fig. 1 is the top view for indicating the position adjusting coil 100 of embodiments of the present invention 1, and Fig. 2 is separately shown figure
The decomposition diagram of first coil group 10 and the second coil group 20 in 1, (a) indicate first coil group 10, (b) indicate the second line
Circle group 20.Here, position adjusting coil 100 is installed in wireless charging receiver.
As shown in Figure 1 and Figure 2, position adjusting coil 100 includes: first coil group 10, the coil including being located at first layer
11,12 and positioned at the second layer the first connecting line 13；With the second coil group 20, coil 21,22 and position including being located at the second layer
In the second connecting line 23 of first layer.In this, it is assumed that first coil group 10 is used to construct the Y-axis of two-dimensional coordinate system, the second coil
Group 20 is for constructing the X-axis of two-dimensional coordinate system.In Fig. 1, position is represented by dashed line in each section indicated by the solid line positioned at first layer
In each section of the second layer, and in order to identify first layer and the second layer in a top view, be slightly staggered first coil
Group 10 and second coil group 20, but can be completely overlapped both when actually overlooking.In addition, although the first connecting line 13 is located at the
It two layers, is not contacted with the coil of the second layer 21,22, similarly, although the second connecting line 23 is located at first layer, but not with first
The coil 11,12 of layer contacts.
As shown in Fig. 2, coil 11 and 12 is located at first layer, and connects the company of coil 11 and 12 in first coil group 10
Wiring 13 is located at the second layer, and coil 11 and 12 winding direction on the contrary, and one end of coil 11 be grounded, the other end and line
12 connection of circle, the other end of coil 12 not connecting with coil 11 is signal output end AY.Similarly, as shown in Fig. 2, coil 21
It is located at the second layer with 22, and the connecting line 23 for connecting coil 21 and 22 is located at first layer, and the winding direction phase of coil 21 and 22
Instead, and one end of coil 21 is grounded, and the other end is connect with coil 22, and the other end of coil 22 not connecting with coil 21 is
Signal output end AX.
Hereinafter, being illustrated by taking the first coil group 10 of the Y-axis for constructing two-dimensional coordinate system as an example.In first coil group
In 10, coil pattern is located at first layer, is equivalent to form two opposite inductance of winding direction.Two inductance meetings being connected in series
Inductive coupling is generated with the coil of the transmitter of transmission electric power, the position with the coil of transmitter relative to position adjusting coil
The difference set, the signal generated by inductive coupling also can be different.
Fig. 3 is the schematic diagram of the position Principles of Regulation of the position adjusting coil 100 for explanatory diagram 1.TX indicates transmission
The transmitter of electric power, RX indicate wireless charging receiver, are mounted with that position of the invention is adjusted on wireless charging receiver RX
With coil 100, Fig. 3 instantiates the positional relationship between first coil group 10 and the coil of transmitter TX.With the phase of TX and RX
To the difference of position (position along the vertical direction in Fig. 3), in the amplitude and phase of the signal that the side signal output end AY is observed
It position can be different.
In Fig. 3, (it is equivalent to wireless charging to connect if the coil of transmitter TX is located at centre relative to first coil group 10
Receive device and be located at position corresponding with the power transmission efficiency highest point of transmitter), then the coil of transmitter TX and 11 coupling of coil
Close the electric current generated coil of the size equal to transmitter TX coupled with coil 12 generation electric current size, and the two electric currents
180 ° of phase phase difference, be 0 in the amplitude that the side signal output end AY is observed therefore.That is, the coil of transmitter TX is relative to
It is optimal state that one coil group 10, which is located at centre,.
If top (i.e. AY side) of the coil of transmitter TX relative to first coil group 10 on paper, transmitter
The coil that the electric current that the coil of TX couples generation with coil 11 will be greater than transmitter TX couples the electric current generated with coil 12, with
Ideal situation is compared and is become larger in the amplitude that the side signal output end AY is observed, and is observed in the side signal output end AY
Signal phase it is identical as the phase of the electric current based on coil 11.
On the contrary, lower section (i.e. ground side) of the coil of transmitter TX relative to first coil group 10 on paper, then
The coil that the electric current that the coil of transmitter TX couples generation with coil 11 will be less than transmitter TX couples generation with coil 12
Electric current becomes larger compared with ideal situation in the amplitude that the side signal output end AY is observed, and in signal output end AY
The phase for the signal that side is observed is identical as the phase of the electric current based on coil 12.That is, at this time in signal output end AY
The phase for the signal that side is observed differs 180 ° compared with closer to the side AY.
The case where being located at centre relative to first coil group 10 using the coil of transmitter TX as origin, by transmitter TX's
When coil is set as 0 closer to the phase that the side the AY side ShiAY is observed relative to first coil group 10, the coil spacing of transmitter TX
The distance of origin and relationship such as Fig. 4 (a) and Fig. 4 (b) of the amplitude of signal and phase observed in the side AY are shown.It is former in Fig. 4
The coil of point expression transmitter TX is located at centre relative to first coil group 10, will be set as X from origin towards the direction of the side AY
Direction from origin towards ground side is set as the negative direction of X-axis by the positive direction of axis, and Y-axis indicates defeated in signal in Fig. 4 (a)
The amplitude for the inductive signal that outlet AY is observed side, Y-axis indicates the induction observed in the side signal output end AY in Fig. 4 (b)
The relative phase of signal.
In conjunction in Fig. 4 (a) and Fig. 4 (b) amplitude and relative phase and distance between relationship, can obtain and distance at
The signal of ratio.Here, so-called distance is to indicate transmitter TX from origin (i.e. optimal state) towards signal output end AY
The degree that side or ground side deviate.
By analyzing above, can be connect using power transmission efficiency highest point in transmitter TX as origin using wireless charging
The position adjusting coil 100 on device RX is received, the Y-axis of two-dimensional coordinate system is constructed to the case where receiver RX deviation from origin.It constructs
The principle of the X-axis of two-dimensional coordinate system is identical as the principle for constructing Y, in this detailed description will be omitted.Utilize constructed two-dimensional coordinate
System, user can adjust placement location of the receiver relative to transmitter.
Position according to the present invention, which is adjusted, uses coil 100, can realize that wireless charging connects by two layers of coil pattern structure
The position adjustment function of device is received, so as to improve wireless charging efficiency.Each layer of coil pattern constructs one of coordinate system
Axis.Since one layer only exists and constructs the coil pattern of an axis of coordinate system, can maximize coil turn.In addition, only
Two-dimensional coordinate system can be obtained by two signal output end (node) AY and AX.
Embodiment 2
The present invention is not limited to structures shown in FIG. 1, also may be constructed structure as shown in Figure 5.Fig. 5 is to indicate the present invention
Another location adjust use coil top view.
As shown in figure 5, position adjusting coil 200 includes: first coil group 110, the pair of horns including being located at first layer
The coil 111,112 at the both ends of line and positioned at the second layer and connect coil 111 and 112 the first connecting line 213；With the second coil
Group 120, including be located at another cornerwise both ends of first layer coil 121,122 and be located at the second layer and connection coil 121 with
122 the second connecting line 223.In Fig. 5, the coil 111,112,121,122 positioned at first layer indicated by the solid line uses dotted line
Illustrate the connecting line 213 and 223 positioned at the second layer.Although the first connecting line 213 and the second connecting line 223 are located on the same floor,
But mutually not in contact with.Similarly, it is not also contacted mutually positioned at each coil of first layer.
As shown in figure 5, each coil of first coil group 110 and the second coil group 120 is all located at same layer, it is located at a pair of
Two coil winding directions at linea angulata both ends on the contrary, i.e. coil 111 and coil 112 winding direction on the contrary, simultaneously coil 121 with
The winding direction of coil 122 is also opposite.In addition, two coils for being located at same diagonal line both ends pass through the connection positioned at the second layer
Line be connected, one is grounded in not connected remaining two ports, one as signal output end (that is, AY ' and
AX′)。
The principle for constructing two-dimensional coordinate system by the position adjusting coil 200 of present embodiment is identical as embodiment 1,
Therefore detailed description will be omitted.But compared with embodiment 1, two-dimensional coordinate that the coil pattern based on present embodiment is constructed
System is the X ' axis and Y ' axis that 45° angle degree has been deflected centered on origin.
The embodiments of the present invention are explained above, as needed, as long as in two signals of position adjusting coil
Output terminals A X (or AX ') and AY (or AY ') rear class connection detection circuit, so that it may notify that wireless charging receiver is to user
The power transmission efficiency highest point of the no transmitter for deviating from transmission electric power, user can connect wireless charging according to content of announcement
It receives device to be adjusted relative to the placement location of transmitter, so that charge efficiency be made to reach maximum.Here, detection circuit can basis
User's needs unrestricted choice, and the present invention does not limit the specific structure of detection circuit.In addition, structure according to the present invention, only
The connecting line between coil and coil to be respectively configured at two layers, as long as and two signal output ends of detection (AX ' and AY ')
Signal can construct two-dimensional coordinate system.
Have been described in detail above the embodiments of the present invention, but the present invention is not limited to above each embodiment,
The change, the improvement that carry out within the scope of the technical idea of the present invention etc. are within the scope of the present invention.
Claims (2)
1. a kind of position of wireless charging receiver, which is adjusted, uses coil, which is characterized in that have:
First coil group, comprising: positioned at the first coil of first layer；Positioned at the second coil of first layer；And it is located at the second layer
And the first connecting line of the connection first coil and the second coil；With
Second coil group, comprising: positioned at the tertiary coil of the second layer；Positioned at the 4th coil of the second layer；And it is located at first layer
And the second connecting line of the connection tertiary coil and the 4th coil,
The winding direction of the first coil and the second coil on the contrary,
The winding direction of the tertiary coil and the 4th coil on the contrary,
One end of the first coil group is grounded, and the other end is signal output end AY,
One end of second coil group is grounded, and the other end is signal output end AX,
In the first layer, second connecting line not with the first coil and the second coil contact,
In the second layer, first connecting line not with the tertiary coil and the 4th coil contact,
The first coil group is used to construct the Y-axis of two-dimensional coordinate system,
Second coil group is used to construct the X-axis of two-dimensional coordinate system.
2. a kind of position of wireless charging receiver, which is adjusted, uses coil, which is characterized in that have:
First coil group, comprising: first coil and the second coil positioned at the both ends of a pair of of linea angulata of first layer；And it is located at the
First connecting line of two layers and the connection first coil and the second coil；
Second coil group, comprising: tertiary coil and the 4th coil positioned at another cornerwise both ends of first layer；And it is located at
Second connecting line of the second layer and the connection tertiary coil and the 4th coil,
The winding direction of the first coil and the second coil on the contrary,
The winding direction of the tertiary coil and the 4th coil on the contrary,
One end of the first coil group is grounded, and the other end is signal output end AY ',
One end of second coil group is grounded, and the other end is signal output end AX ',
In the first layer, the first coil to the 4th coil is not in contact with each other,
In the second layer, first connecting line is not contacted with second connecting line,
The first coil group is used to construct the Y-axis of two-dimensional coordinate system,
Second coil group is used to construct the X-axis of two-dimensional coordinate system.
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| CN201710449979.4A CN107068372B (en) | 2017-06-14 | 2017-06-14 | The position of wireless charging receiver adjusts and uses coil |
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| CN201710449979.4A CN107068372B (en) | 2017-06-14 | 2017-06-14 | The position of wireless charging receiver adjusts and uses coil |
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| CN107068372A CN107068372A (en) | 2017-08-18 |
| CN107068372B true CN107068372B (en) | 2019-04-05 |
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| CN107623364B (en) * | 2017-09-27 | 2020-12-29 | 哈尔滨工业大学 | Bidirectional space magnetic field adaptive electric energy receiving end applied to wireless charging of electric automobile |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308949A (en) * | 2012-03-14 | 2013-09-18 | 索尼公司 | Detecting apparatus, power receiving apparatus, power transmitting apparatus, and contactless power supply system |
| CN103338053A (en) * | 2012-03-21 | 2013-10-02 | 爱德万测试株式会社 | Wireless communication apparatus and wireless communication system |
| CN105453383A (en) * | 2013-08-30 | 2016-03-30 | 松下知识产权经营株式会社 | Wireless power receiving device |
| CN105765828A (en) * | 2013-08-06 | 2016-07-13 | 动量动力学公司 | A method of and apparatus for detecting coil alignment error in wireless inductive power transmission |
| CN106232420A (en) * | 2014-04-25 | 2016-12-14 | 丰田自动车株式会社 | Power transmission device and current-collecting device |
| CN206877820U (en) * | 2017-06-14 | 2018-01-12 | 江西联智集成电路有限公司 | The position adjustments coil of wireless charging receiver |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006279669A (en) * | 2005-03-30 | 2006-10-12 | Matsushita Electric Ind Co Ltd | Apparatus and system for short-range communication |
| JP2013090352A (en) * | 2011-10-13 | 2013-05-13 | Toko Inc | Wireless power transmission apparatus |
-
2017
- 2017-06-14 CN CN201710449979.4A patent/CN107068372B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103308949A (en) * | 2012-03-14 | 2013-09-18 | 索尼公司 | Detecting apparatus, power receiving apparatus, power transmitting apparatus, and contactless power supply system |
| CN103338053A (en) * | 2012-03-21 | 2013-10-02 | 爱德万测试株式会社 | Wireless communication apparatus and wireless communication system |
| CN105765828A (en) * | 2013-08-06 | 2016-07-13 | 动量动力学公司 | A method of and apparatus for detecting coil alignment error in wireless inductive power transmission |
| CN105453383A (en) * | 2013-08-30 | 2016-03-30 | 松下知识产权经营株式会社 | Wireless power receiving device |
| CN106232420A (en) * | 2014-04-25 | 2016-12-14 | 丰田自动车株式会社 | Power transmission device and current-collecting device |
| CN206877820U (en) * | 2017-06-14 | 2018-01-12 | 江西联智集成电路有限公司 | The position adjustments coil of wireless charging receiver |
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