CN108109831A - A kind of electric energy transmitting coil module and electric energy transmitting circuit - Google Patents
A kind of electric energy transmitting coil module and electric energy transmitting circuit Download PDFInfo
- Publication number
- CN108109831A CN108109831A CN201711337074.4A CN201711337074A CN108109831A CN 108109831 A CN108109831 A CN 108109831A CN 201711337074 A CN201711337074 A CN 201711337074A CN 108109831 A CN108109831 A CN 108109831A
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- coil
- electric energy
- energy transmitting
- module
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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
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- 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
- H01F27/2871—Pancake coils
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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
This application discloses a kind of electric energy transmitting coil module and electric energy transmitting circuits, by the way that the coil of multiple and different sizes is arranged placement in nested fashion, so that charging equipment just can effectively be charged without being accurately positioned, it ensure that the degree of freedom of all directions in charging plane, charge efficiency is improved, and simplifies the complexity of coil configuration to greatest extent.
Description
Technical field
This application involves electron electric power technologies, and in particular to wireless charging technology emits more particularly, to a kind of electric energy
Coil module and electric energy transmitting circuit.
Background technology
Wireless charging technology can wirelessly transmit electric energy between electronic devices, thus be widely used in consumption electricity
In sub- product and other types of electronic product.Wireless charging technology is usually by emitting end-coil and receiving the mutual of end-coil
Electromagnetic coupling realizes the wireless transmission of electric energy.
DC voltage is converted to alternating current by transmitting terminal, and alternating current generates alternating magnetic field by emitting end-coil.It connects
The magnetic field induction of receiving end coupling alternation goes out corresponding alternating voltage, and alternating voltage then is converted to direct current by rectification circuit
Press electron equipment charge.Receiving terminal couples alternating magnetic field, and the ability of induced potential is：
Us=ω MIp
Wherein ω is the frequency of alternating magnetic field, and M is the coupling inductance of electric energy transmitting coil and receiving coil, and Ip sends out for electric energy
Electric current in ray circle characterizes magnetic field intensity.
What is be widely adopted at present is low frequency induction technology, due to ω very littles, so coupling inductance M must be improved to improve
Therefore induced potential, if the scope of electric energy transmitting coil module distribution is smaller, needs the accurate positionin of charging equipment.Cause
This, in order to improve the degree of freedom of charging equipment, then needs to expand the scope of electric energy transmitting coil module distribution.At present, electric energy is sent out
The structure of ray circle module generally use multi-coil as shown in Figure 1.As shown in Figure 1, intermediate coil is used for making up left and right two
The magnetic field blind area that coil generates.But the multi-thread coil structures shown in Fig. 1, horizontal degree of freedom is only expanded, if also to increase
The degree of freedom of longitudinal direction, then must increase coil.Therefore, this method also increases while the degree of freedom of charging equipment is increased
The complexity of coil configuration and the cost of circuit design.
The content of the invention
In view of this, this application discloses a kind of electric energy transmitting coil module and electric energy transmitting circuit, to ensure to charge
In plane while the degree of freedom of all directions, simplify the complexity of coil configuration to greatest extent.
In a first aspect, a kind of electric energy transmitting coil module is provided, including：
N number of coil, the alternating current that each coil is configured as receiving preset frequency generate alternating magnetic field；
Wherein, N is the integer more than or equal to 2, and N number of coil is of different sizes, and with mutually nested side
Formula is placed.
Further, the size of N number of coil is gradually successively decreased, and i-th of coil is placed on the inside of (i-1)-th coil,
The i is greater than 1 integer for being less than or equal to N.
Further, N number of coil is placed in a manner of essentially concentric.
Further, j coil nested side-by-side is in the inside of large scale coil；
Wherein, the j is less than the integer of N, and the j coil is not overlapped.
Further, N number of coil is positioned in approximately the same plane.
Second aspect provides a kind of electric energy transmitting circuit, including：
Such as claim 1-5 any one of them electric energy transmitting coil modules；
Controller, for controlling the electric energy transmitting coil module.
Further, the controller is configured as selecting a coil in N number of coil externally to emit electric energy.
Further, the controller is configured as obtaining the coupling characterized between each coil and corresponding electric energy receiving coil
The parameter of inductance is closed, and a coil in N number of coil according to the parameter selection externally emits electric energy.
Further, the electric energy transmitting circuit further includes：
N number of capacitance is connected in series respectively with N number of coil；
N number of switch is connected in series respectively with N number of coil.
Further, m-th of capacitance and m-th of coil are formed in the resonance circuit to work under predetermined working frequency, institute
It is the integer less than or equal to N to state m；
The controller is configured as by the way that one of N number of switch conducting is controlled to control one of described N number of coil
Externally transmitting electric energy.
In the embodiment of the present application, by the way that the coil of multiple and different sizes is arranged placement in nested fashion so that fill
Electric equipment just can effectively be charged without being accurately positioned, and be ensure that the degree of freedom of all directions in charging plane, improved and fill
Electrical efficiency, and the complexity of coil configuration is simplified to greatest extent.
Description of the drawings
By the description referring to the drawings to the embodiment of the present application, the above-mentioned and other purpose of the application, feature and
Advantage will be apparent from, in the accompanying drawings：
Fig. 1 is the structure chart of the electric energy transmitting coil module of the prior art；
Fig. 2 is the structure chart of the electric energy transmitting coil module of the application first embodiment；
Fig. 3 is the electric energy transmitting coil module operating diagram of the application first embodiment；
Fig. 4 is the electric energy transmitting coil module operating diagram of the application first embodiment；
Fig. 5 is the electric energy transmitting coil module operating diagram of the application first embodiment；
Fig. 6 is the structure chart of the electric energy transmitting coil module of the application second embodiment；
Fig. 7 is the structure chart of the electric energy transmitting coil module of the application 3rd embodiment；
Fig. 8 is the structure chart of the electric energy transmitting coil module of the application fourth embodiment；
Fig. 9 is the circuit diagram of the electric energy transmitting circuit of the embodiment of the present application.
Specific embodiment
The application is described below based on embodiment, but the application is not restricted to these embodiments.Under
Text is detailed to describe some specific detail sections in the datail description of the application.Do not have for a person skilled in the art
The description of these detail sections can also understand the application completely.In order to avoid obscuring the essence of the application, well known method, mistake
There is no narrations in detail for journey, flow, element and circuit.
In addition, it should be understood by one skilled in the art that provided herein attached drawing be provided to explanation purpose, and
What attached drawing was not necessarily drawn to scale.
It will also be appreciated that in the following description, " circuit " refers to be passed through by least one element or sub-circuit electrical
The galvanic circle that connection or electromagnetism connect and compose.It " is connected when claiming element or another element of circuit " being connected to " or element/circuit
" between two nodes when, it can be directly coupled or connected another element or there may be intermediary element, element it
Between connection can be physically, in logic or its combination.On the contrary, " connect when title element " being directly coupled to " or directly
Be connected to " another element when, it is meant that the two be not present intermediary element.
Unless the context clearly requires otherwise, otherwise throughout the specification and claims " comprising ", "comprising" etc. are similar
Word should be construed to the meaning included rather than exclusive or exhaustive meaning；That is, it is containing for " including but not limited to "
Justice.
In the description of the present application, it is to be understood that term " first ", " second " etc. are only used for description purpose, without
It is understood that indicate or imply relative importance.In addition, in the description of the present application, unless otherwise indicated, the meaning of " multiple "
It is two or more.
Fig. 2 is the structure chart of the electric energy transmitting coil module of the application first embodiment.As shown in Fig. 2, electric energy emission lines
Enclosing module 2 includes 21 and second coil 22 of first coil.21 and second coil 22 of first coil is configured as receiving preset frequency
Alternating current generate alternating magnetic field.Wherein, the shape of 21 and second coil 22 of first coil is substantially circular, and with basic
Concentric mode is placed so that the alternating magnetic field for exciting generation is uniform, and the placement of charging equipment is more flexible.Second coil 22 is embedding
It is sleeved on the inside of first coil 21 so that chargeable range workable for charging equipment increases, and realizes charging equipment without precisely fixed
Position can obtain good charge efficiency.
Fig. 3, Fig. 4 and Fig. 5 are the electric energy transmitting coil module operating diagrams of the application first embodiment.As shown in figure 3,
The electric energy receiving coil 33 of charging equipment is in the top of the second coil 32, and the second coil 32 receives the exchange of preset frequency at this time
Electricity generates alternating magnetic field, and electric energy receiving coil 33 generates induced potential and then charges to charging equipment.In Fig. 4, charging equipment
It is moved to the left, the electric energy receiving coil 43 of charging equipment is located at 41 and second coil of first coil, 42 top, at this point, can be according to the
The characterization coupling inductance that the parameter for the characterization coupling inductance that one coil 41 generates when working and the second coil 42 generate when working
The size of parameter selects actuating coil.Wherein, the parameter for characterizing coupling inductance can be induced potential, the work(of input or output
Rate etc..Induced potential and output power can be gathered by charging equipment end and pass through communications to electric energy transmitting coil module this
End.Input power can directly in electric energy transmitting coil module, this one end be acquired.If the characterization when first coil 41 works
The parameter of coupling inductance is more than the parameter of characterization coupling inductance when the second coil 42 works, then first coil 41 works to charging
Equipment charges.Otherwise, the second coil 42, which works, charges to charging equipment.Similarly, in Figure 5, charging equipment to
Upper movement, the electric energy receiving coil 53 of charging equipment are located at 51 top of first coil, and first coil 51 receives preset frequency at this time
Alternating current generate alternating magnetic field, electric energy receiving coil 53 generate induced potential so that give charging equipment charge.
From the foregoing, it will be observed that since electric energy transmitting coil module is placed by the way of nested, different coils has different
Area coverage.Therefore, charging equipment, at least can be with covering at electric energy transmitting coil module center when being moved up and down
That coil of area maximum forms preferable coupling, so as to obtain the preferable effect that charges in larger degree of freedom
Fruit.
Fig. 6 is the structure chart of the electric energy transmitting coil module of the application second embodiment.As shown in fig. 6, electric energy emission lines
Enclosing module 6 includes first coil 61, the second coil 62 and tertiary coil 63.First coil 61, the second coil 62 and tertiary coil
63 alternating currents for being configured as receiving preset frequency generate alternating magnetic field.Wherein, first coil 61, the second coil 62 and the 3rd line
The shape of circle 63 is substantially circular, and is placed in a manner of essentially concentric so that the alternating magnetic field for exciting generation is uniform, fills
The placement of electric equipment is more flexible.According to the size of first coil 61, the second coil 62 and tertiary coil 63, by them according to ruler
The nested arrangement of very little size is placed.Chargeable range workable for this causes charging equipment increases, and realizes charging equipment without precisely
Positioning can obtain good charge efficiency.As shown in Figure 2 and Figure 6, coil is more, and the chargeable scope of charging equipment is got over
Greatly, and then it can realize that multiple charging equipments charge simultaneously.Therefore, can be emitted according to the shape and quantitative design electric energy of charging equipment
The number of coil in coil module.
Fig. 7 is the structure chart of the electric energy transmitting coil module of the application 3rd embodiment.As shown in fig. 7, electric energy emission lines
Enclosing module 7 includes 71 and second coil 72 of first coil, and 71 and second coil 72 of first coil is configured as receiving preset frequency
Alternating current generate alternating magnetic field.Wherein, the shape of 71 and second coil 72 of first coil is essentially square, compared with circle
Coil, the chargeable range bigger of square coil, the placement of charging equipment are more flexible.And 71 and second coil 72 of first coil
It is placed in a manner of essentially concentric so that the alternating magnetic field for exciting generation is uniform.Second coil 72 is nested in first coil 71
It is internal so that chargeable range workable for charging equipment increases, and realizes that charging equipment can obtain very well without precise positioning
Charge efficiency.
It is to be understood that according to the demand of actual charging equipment, the square coil arrangement that can use multiple and different sizes is nested
It places so that chargeable range bigger, and can realize that multiple charging equipments are carried out at the same time charging.
Fig. 8 is the structure chart of the electric energy transmitting coil module of the application fourth embodiment.As shown in figure 8, electric energy emission lines
Enclosing module 8 includes first coil 81, the second coil 82 and tertiary coil 83, first coil 81, the second coil 82 and tertiary coil
83 alternating currents for being configured as receiving preset frequency generate alternating magnetic field.Wherein, first coil 81, the second coil 82 and the 3rd line
The shape of circle 83 is essentially square, and compared with circular coil, the chargeable range bigger of square coil, the placement of charging equipment is more
To be flexible.In fig. 8, the second coil 82 and 83 nested side-by-side of tertiary coil are in the inside of first coil 81, compared with different rulers
Very little coil nested arrangement mode one by one, in the case where chargeable range is identical, 8 this coil of electric energy transmitting coil module
Arrangement mode more saves raw material, reduces cost of manufacture.
It is to be understood that in embodiments herein, the coil of electric energy transmitting coil module is actual with circular and square citing
In, it can be according to the coil of the shape of charging equipment and the shape design flexibility shape of its electric energy receiving coil.According to filling
The distribution of electric energy receiving coil in electric equipment, various sizes of coil can not also same centers when carrying out nested one by one.
Preferably, in order to electric energy transmitting coil module be suitable for most of charging equipments, electric energy transmitting coil module it is N number of
Various sizes of coil configuration is arranged in approximately the same plane so that using the application electric energy transmitting coil module charger more
It is thin, it is easy to carry to be easy to place.But if charging equipment is special three-dimensional shape, such as ball-type, then electric energy emission lines
Circle module can be designed as the shape placed convenient for charging equipment of ship type etc.
In conclusion in the electric energy transmitting coil module of the embodiment of the present application, by by the coil of multiple and different sizes
Arrangement is placed in nested fashion so that charging equipment just can effectively be charged without being accurately positioned, and ensure that charging plane
The degree of freedom of upper all directions, and the complexity of coil configuration is simplified to greatest extent.
Fig. 9 is the circuit diagram of the electric energy transmitting circuit of the embodiment of the present application.As shown in figure 9, electric energy transmitting circuit 9 includes electricity
It can emitting mould train Ls, controller A, N number of capacitance and N number of switch.Wherein, electric energy emitting mould train Ls includes N number of coil L1-LN, often
The alternating current that a coil is configured as receiving preset frequency generates alternating magnetic field.Wherein, N is N described in the integer more than or equal to 2
A coil is of different sizes, and is placed in a manner of mutually nested.
The arrangement mode of electric energy emitting mould train Ls coils is as shown in Fig. 2, Fig. 6, Fig. 7 and Fig. 8.In fig. 2, first coil
21 and second coil 22 shape it is substantially circular, and placed in a manner of essentially concentric so that excite the alternation of generation
Field homogeneity, the placement of charging equipment are more flexible.Second coil 22 is nested in the inside of first coil 21 so that charging equipment
Workable chargeable range increase, realizes that charging equipment can obtain good charge efficiency without precise positioning.In Fig. 6
In, employ three various sizes of circular coils placed in concentric fashion substantially nested mode one by one so that charging is set
Standby workable chargeable range bigger, and then can realize that multiple charging equipments charge simultaneously.It therefore, can be according to the shape of charging equipment
Shape and quantity are related to the number of the coil in electric energy transmitting coil module.In the figure 7, the shape of 71 and second coil 72 of first coil
Shape is essentially square, and compared with circular coil, the chargeable range bigger of square coil, the placement of charging equipment is more flexible.
And 71 and second coil 72 of first coil is placed in a manner of essentially concentric so that the alternating magnetic field for exciting generation is uniform.The
Two coil 72 is nested in the inside of first coil 71 so that chargeable range workable for charging equipment increases, and realizes charging equipment
Good charge efficiency can be obtained without precise positioning.In fig. 8, the second coil 82 and 83 nested side-by-side of tertiary coil exist
The inside of first coil 81, compared with various sizes of coil nested arrangement mode one by one, in the identical situation of chargeable range
Under, the arrangement mode of 8 this coil of electric energy transmitting coil module more saves raw material, reduces cost of manufacture.
It is to be understood that in embodiments herein, the coil of electric energy transmitting coil module is actual with circular and square citing
On, it can be according to the coil of the shape of charging equipment and the shape design flexibility shape of its electric energy receiving coil.According to filling
The distribution of electric energy receiving coil in electric equipment, various sizes of coil can not also same centers when carrying out nested one by one.
Preferably, in order to electric energy transmitting coil module be suitable for most of charging equipments, electric energy transmitting coil module it is N number of
Various sizes of coil configuration is arranged in approximately the same plane so that using the application electric energy transmitting coil module charger more
It is thin, it is easy to carry to be easy to place.But if charging equipment is special three-dimensional shape, such as ball-type, then electric energy emission lines
Circle module can be designed as the shape placed convenient for charging equipment of ship type etc.
N number of capacitance and N number of switch are respectively connected in series with N number of coil in electric energy transmitting coil module Ls, and m
A capacitance and m-th of coil are formed in the resonance circuit to work under predetermined working frequency, and m is the integer less than or equal to N.Example
Such as, C1, S1 and L1 are connected in series in the output port of alternating current, and C1 and L1 be formed in work under predetermined working frequency it is humorous
Shake circuit, and resonance generates alternating magnetic field.
Controller A is configured as obtaining the parameter for characterizing the coupling inductance between each coil and corresponding electric energy receiving coil
P (such as induced potential), and select one in N number of coil externally to emit electric energy according to parameter p.For example, the of controller A
In a kind of control mode, when being placed on charging equipment on electric energy transmitting coil module Ls, controller A gathers N number of line respectively
The parameter p1-pN of characterization coupling inductance when circle works independently controls the maximum corresponding coil working of parameter to charging equipment
It charges.In second of control mode of controller A, the parameter threshold pl of a characterization coupling inductance is set, works as control
When the parameter p of device A acquisitions is not less than parameter threshold pl, actuating coil at this time is kept to work.As the parameter p of controller A acquisitions
During less than parameter threshold pl, control is switched to adjacent coil working and gathers parameter p at this time, until the parameter p gathered
Not less than parameter threshold pl, actuating coil work is kept.
In the first control mode of controller A, after controller A collects the parameter p of characterization coupling inductance, output one
A control signal Ctl controls the switch conduction in the branch where the maximum corresponding coil of parameter, and then controls the coil work
Make.For example, when if coil L1 works, the parameter p1 for the characterization coupling inductance that controller A acquisitions obtain is maximum, then controller A is defeated
The control signal Ctl control S1 conductings gone out so that coil L1 and C1 resonance under predetermined working frequency generates alternating magnetic field.By
In in charging process, charging equipment it is possible that situation about being shifted around, so, can cycle at every predetermined time
The parameter p1-pN that acquisition once gathers characterization coupling inductance when N number of coil works independently is compared, so as to select maximum
The corresponding coil working of parameter charges to charging equipment, improves charge efficiency.
In second of control mode of controller A, after controller A collects the parameter p of coupling inductance, with parameter threshold
Value pl is compared.When the parameter p of acquisition is less than parameter threshold pl, controller A exports a control signal Ctl, control letter
The switch in branch where the coil of number Ctl control work at present disconnects, and controls in the branch where coil adjacent thereto
Switch conduction, until the parameter p that is gathered is not less than parameter threshold pl, keep actuating coil work.Controller A is every predetermined
Time cycle gather a work at present coil parameter p, to judge the parameter p of the coil of work at present and parameter in time
The size of threshold value improves the charge efficiency of charging equipment.
The embodiment of the present application is by using electricity various sizes of, that mutually nested multiple coils form in a different manner
Energy transmitting coil module and the controller that the electric energy transmitting coil module is controlled with different control methods so that charging is set
It is standby just effectively to be charged without being accurately positioned, it ensure that the degree of freedom of all directions in charging plane, improve charging and set
Standby charge efficiency, and the complexity of coil configuration is simplified to greatest extent.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for those skilled in the art
For, the application can have various modifications and changes.All any modifications made within spirit herein and principle are equal
Replace, improve etc., it should be included within the protection domain of the application.
Claims (10)
1. a kind of electric energy transmitting coil module, including：
N number of coil, the alternating current that each coil is configured as receiving preset frequency generate alternating magnetic field；
Wherein, N is the integer more than or equal to 2, and N number of coil is of different sizes, and is put in a manner of mutually nested
It puts.
2. electric energy transmitting coil module according to claim 1, which is characterized in that the size of N number of coil is gradually passed
Subtract, i-th of coil is placed on the inside of (i-1)-th coil, and the i is greater than 1 integer for being less than or equal to N.
3. electric energy transmitting coil module according to claim 2, which is characterized in that N number of coil is with essentially concentric side
Formula is placed.
4. electric energy coil module according to claim 1, which is characterized in that j coil nested side-by-side is in large scale coil
Inside；
Wherein, the j is less than the integer of N, and the j coil is not overlapped.
5. the electric energy coil module according to claim 2 or 4, which is characterized in that N number of coil is positioned over same flat
In face.
6. a kind of electric energy transmitting circuit, including：
Such as claim 1-5 any one of them electric energy transmitting coil modules；
Controller, for controlling the electric energy transmitting coil module.
7. electric energy transmitting circuit according to claim 6, which is characterized in that the controller is configured as selecting the N
A coil in a coil externally emits electric energy.
8. electric energy transmitting circuit according to claim 7, which is characterized in that the controller is configured as obtaining characterization respectively
The parameter of coupling inductance between coil and corresponding electric energy receiving coil, and in N number of coil according to the parameter selection
A coil externally emit electric energy.
9. electric energy transmitting circuit according to claim 6, which is characterized in that the electric energy transmitting circuit further includes：
N number of capacitance is connected in series respectively with N number of coil；
N number of switch is connected in series respectively with N number of coil.
10. electric energy transmitting circuit according to claim 9, which is characterized in that m-th of capacitance is formed in m-th of coil
The resonance circuit to work under predetermined working frequency, the m are the integer less than or equal to N；
The controller is configured as by the way that one of N number of switch conducting is controlled to control one of described N number of coil external
Emit electric energy.
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| CN201711337074.4A CN108109831B (en) | 2017-12-14 | 2017-12-14 | Electric energy transmitting coil module and electric energy transmitting circuit |
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| CN201711337074.4A CN108109831B (en) | 2017-12-14 | 2017-12-14 | Electric energy transmitting coil module and electric energy transmitting circuit |
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| CN108878112A (en) * | 2018-06-25 | 2018-11-23 | 苏州奥彼电源有限公司 | A kind of Wireless charging coil |
| WO2020023284A1 (en) * | 2018-07-24 | 2020-01-30 | Apple Inc. | Wireless power transmitting devices |
| US10650964B2 (en) | 2017-12-25 | 2020-05-12 | Ningbo Weie Electronics Technology Ltd. | Coil module, wireless power transmitting circuit and wireless power receiving circuit |
| US10666094B2 (en) | 2017-08-11 | 2020-05-26 | Ningbo Weie Electronics Technology Ltd. | Wireless power transmission system, power transmitting terminal, power receiving terminal and detection method |
| CN112531859A (en) * | 2020-11-20 | 2021-03-19 | 珠海格力电器股份有限公司 | Wireless charging control method and device and wireless charging system |
| CN112737140A (en) * | 2020-12-21 | 2021-04-30 | 珠海格力电器股份有限公司 | Control device and method of wireless charging system and electrical equipment |
| CN112803605A (en) * | 2021-01-05 | 2021-05-14 | 苏州星航综测科技有限公司 | Wireless power transmission method of three-transmitting-coil array |
| CN113659736A (en) * | 2021-10-20 | 2021-11-16 | 深圳英集芯科技股份有限公司 | Wireless charger and electronic equipment |
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| US10666094B2 (en) | 2017-08-11 | 2020-05-26 | Ningbo Weie Electronics Technology Ltd. | Wireless power transmission system, power transmitting terminal, power receiving terminal and detection method |
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| CN112531859A (en) * | 2020-11-20 | 2021-03-19 | 珠海格力电器股份有限公司 | Wireless charging control method and device and wireless charging system |
| CN112531859B (en) * | 2020-11-20 | 2024-01-16 | 珠海格力电器股份有限公司 | Wireless charging control method, device and wireless charging system |
| CN112737140A (en) * | 2020-12-21 | 2021-04-30 | 珠海格力电器股份有限公司 | Control device and method of wireless charging system and electrical equipment |
| CN112803605A (en) * | 2021-01-05 | 2021-05-14 | 苏州星航综测科技有限公司 | Wireless power transmission method of three-transmitting-coil array |
| CN112803605B (en) * | 2021-01-05 | 2023-02-24 | 苏州星航综测科技有限公司 | Wireless power transmission method of three-transmitting-coil array |
| CN113659736A (en) * | 2021-10-20 | 2021-11-16 | 深圳英集芯科技股份有限公司 | Wireless charger and electronic equipment |
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| CN108109831B (en) | 2021-03-30 |
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