CN108109831B - Electric energy transmitting coil module and electric energy transmitting circuit - Google Patents
Electric energy transmitting coil module and electric energy transmitting circuit Download PDFInfo
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- CN108109831B CN108109831B CN201711337074.4A CN201711337074A CN108109831B CN 108109831 B CN108109831 B CN 108109831B CN 201711337074 A CN201711337074 A CN 201711337074A CN 108109831 B CN108109831 B CN 108109831B
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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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Abstract
The application discloses electric energy transmitting coil module and electric energy transmitting circuit arranges a plurality of not unidimensional coils with nested mode and places for charging equipment need not accurate positioning just can effectively charge, has guaranteed the degree of freedom of each direction on the charging plane, has improved charge efficiency, and furthest has simplified the complexity of coil configuration.
Description
Technical Field
The present application relates to an electronic power technology, in particular to a wireless charging technology, and more particularly, to an electric energy transmitting coil module and an electric energy transmitting circuit.
Background
Wireless charging technology can transfer electric energy between electronic devices in a wireless manner, and thus is widely used in consumer electronics and other types of electronic products. Wireless charging techniques typically enable wireless transfer of electrical energy through mutual electromagnetic coupling of a transmitting end coil and a receiving end coil.
The transmitting terminal converts the direct-current voltage into alternating current, and the alternating current generates an alternating magnetic field through a transmitting terminal coil. The receiving end is coupled with the alternating magnetic field to induce corresponding alternating voltage, and then the alternating voltage is converted into direct current voltage through the rectifying circuit to charge the electronic equipment. The receiving end is coupled with an alternating magnetic field, and the capacity of induced voltage is as follows:
Us＝ωMIp
wherein, omega is the frequency of the alternating magnetic field, M is the coupling inductance of the electric energy transmitting coil and the receiving coil, and Ip is the current in the electric energy transmitting coil, representing the magnetic field intensity.
Currently, a low-frequency induction technology is widely adopted, and because ω is very small, the coupling inductor M must be increased to increase the induced voltage, so that if the distribution range of the power transmitting coil module is small, accurate positioning of the charging device is required. Therefore, in order to increase the degree of freedom of the charging apparatus, it is necessary to expand the distribution range of the power transmission coil modules. At present, the power transmitting coil module generally adopts a multi-coil structure as shown in fig. 1. As shown in fig. 1, the middle coil is used to compensate the magnetic field blind area generated by the left and right coils. However, the multi-coil structure shown in fig. 1 only expands the degree of freedom in the lateral direction, and if the degree of freedom in the longitudinal direction is also increased, the number of coils must be increased. Therefore, this method increases the degree of freedom of the charging device, and also increases the complexity of the coil configuration and the cost of circuit design.
Disclosure of Invention
In view of the above, the present application discloses an electric energy transmitting coil module and an electric energy transmitting circuit, which are used to ensure the degree of freedom of each direction on a charging plane and to simplify the complexity of coil configuration to the maximum.
In a first aspect, an electrical energy transmitting coil module is provided, which includes:
n coils, each of the coils being configured to receive an alternating current of a predetermined frequency to generate an alternating magnetic field;
wherein N is an integer greater than or equal to 2, the N coils having different sizes and being disposed in a nested manner.
Further, the size of the N coils is gradually decreased, the ith coil is placed in the (i-1) th coil, and i is an integer which is larger than 1 and smaller than or equal to N.
Further, the N coils are disposed in a substantially concentric manner.
Further, j coils are nested side by side inside the large-size coil;
wherein j is an integer less than N, the j coils do not overlap.
Further, the N coils are placed in the same plane.
In a second aspect, there is provided a power transmitting circuit comprising:
an electrical energy transmitting coil module as claimed in any one of claims 1 to 5;
and the controller is used for controlling the electric energy transmitting coil module.
Further, the controller is configured to select one of the N coils to transmit electrical energy to the outside.
Further, the controller is configured to acquire a parameter representing coupling inductance between each coil and the corresponding power receiving coil, and select one of the N coils to transmit power to the outside according to the parameter.
Further, the power transmitting circuit further includes:
n capacitors connected in series with the N coils, respectively;
and the N switches are respectively connected with the N coils in series.
Furthermore, an mth capacitor and an mth coil form a resonant circuit which works at a preset working frequency, wherein m is an integer less than or equal to N;
the controller is configured to control one of the N coils to emit electric energy outwards by controlling one of the N switches to be conducted.
In the embodiment of the application, the coils with different sizes are arranged in a nested manner, so that the charging equipment can be effectively charged without accurate positioning, the freedom degree of each direction on a charging plane is ensured, the charging efficiency is improved, and the complexity of coil configuration is simplified to the maximum extent.
Drawings
The above and other objects, features and advantages of the present application will become more apparent from the following description of embodiments thereof with reference to the accompanying drawings, in which:
FIG. 1 is a block diagram of a prior art power transmitting coil module;
fig. 2 is a structural diagram of a power transmitting coil module according to a first embodiment of the present application;
FIG. 3 is a schematic diagram of the operation of the power transmitting coil module according to the first embodiment of the present application;
FIG. 4 is a schematic diagram of the power transmitting coil module according to the first embodiment of the present application;
FIG. 5 is a schematic diagram of the power transmitting coil module according to the first embodiment of the present application;
fig. 6 is a structural diagram of a power transmitting coil module according to a second embodiment of the present application;
fig. 7 is a structural view of a power transmitting coil module of a third embodiment of the present application;
fig. 8 is a structural view of a power transmitting coil module of a fourth embodiment of the present application;
fig. 9 is a circuit diagram of a power transmitting circuit of an embodiment of the present application.
Detailed Description
The present application is described below based on examples, but the present application is not limited to only these examples. In the following detailed description of the present application, certain specific details are set forth in detail. It will be apparent to one skilled in the art that the present application may be practiced without these specific details. Well-known methods, procedures, components and circuits have not been described in detail so as not to obscure the present application.
Further, those of ordinary skill in the art will appreciate that the drawings provided herein are for illustrative purposes and are not necessarily drawn to scale.
Meanwhile, it should be understood that, in the following description, a "circuit" refers to a conductive loop constituted by at least one element or sub-circuit through electrical or electromagnetic connection. When an element or circuit is referred to as being "connected to" another element or element/circuit is referred to as being "connected between" two nodes, it may be directly coupled or connected to the other element or intervening elements may be present, and the connection between the elements may be physical, logical, or a combination thereof. In contrast, when an element is referred to as being "directly coupled" or "directly connected" to another element, it is intended that there are no intervening elements present.
Unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, what is meant is "including, but not limited to".
In the description of the present application, it is to be understood that the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In addition, in the description of the present application, "a plurality" means two or more unless otherwise specified.
Fig. 2 is a structural diagram of a power transmitting coil module according to a first embodiment of the present application. As shown in fig. 2, the power transmission coil module 2 includes a first coil 21 and a second coil 22. The first coil 21 and the second coil 22 are configured to receive alternating current of a predetermined frequency to generate an alternating magnetic field. The first coil 21 and the second coil 22 are both substantially circular in shape and are disposed in a substantially concentric manner, so that an alternating magnetic field generated by excitation is uniform, and the charging device is more flexibly disposed. The second coil 22 is nested inside the first coil 21, so that the usable charging range of the charging device is increased, and the charging device can obtain good charging efficiency without accurate positioning.
Fig. 3, fig. 4 and fig. 5 are schematic diagrams illustrating the operation of the power transmitting coil module according to the first embodiment of the present application. As shown in fig. 3, the power receiving coil 33 of the charging device is located above the second coil 32, and when the second coil 32 receives alternating current of a predetermined frequency to generate an alternating magnetic field, the power receiving coil 33 generates an induced voltage to charge the charging device. In fig. 4, the charging apparatus moves to the left, and the power receiving coil 43 of the charging apparatus is located above the first coil 41 and the second coil 42, and at this time, the operating coil may be selected according to the magnitude of the parameter representing the coupling inductance generated when the first coil 41 operates and the parameter representing the coupling inductance generated when the second coil 42 operates. The parameters characterizing the coupling inductance may be induced voltage, input or output power, and the like. The induced voltage and the output power can be collected by the charging equipment end and transmitted to the end of the electric energy transmitting coil module through communication. The input power can be directly collected at the end of the electric energy transmitting coil module. If the parameter representing the coupling inductance when the first coil 41 operates is larger than the parameter representing the coupling inductance when the second coil 42 operates, the first coil 41 operates to charge the charging device. Otherwise, the second coil 42 operates to charge the charging device. Similarly, in fig. 5, the charging device moves upward, the power receiving coil 53 of the charging device is positioned above the first coil 51, and when the first coil 51 receives alternating current of a predetermined frequency to generate an alternating magnetic field, the power receiving coil 53 generates an induced voltage to charge the charging device.
As can be seen from the above, since the power transmitting coil modules are placed in a nested manner, different coils have different coverage areas. Therefore, when the charging equipment moves up, down, left and right at the center of the electric energy transmitting coil module, the charging equipment and the coil with the largest coverage area form better coupling, so that a better charging effect can be obtained in a larger degree of freedom.
Fig. 6 is a structural diagram of a power transmitting coil module according to a second embodiment of the present application. As shown in fig. 6, the power transmission coil module 6 includes a first coil 61, a second coil 62, and a third coil 63. The first coil 61, the second coil 62, and the third coil 63 are configured to receive alternating current of a predetermined frequency to generate an alternating magnetic field. The first coil 61, the second coil 62 and the third coil 63 are all substantially circular in shape and are arranged in a substantially concentric manner, so that an alternating magnetic field generated by excitation is uniform, and the charging equipment is more flexibly arranged. The first coil 61, the second coil 62 and the third coil 63 are nested according to the size of the size according to the size. This makes the usable charge range of battery charging outfit increase, realizes that battery charging outfit need not accurate location alright obtain fine charging efficiency. As shown in fig. 2 and 6, the more the coils, the larger the chargeable range of the charging device, and thus, the charging of a plurality of charging devices can be realized simultaneously. Therefore, the number of the coils in the electric energy transmitting coil module can be designed according to the shape and the number of the charging equipment.
Fig. 7 is a structural view of a power transmitting coil module according to a third embodiment of the present application. As shown in fig. 7, the power transmission coil module 7 includes a first coil 71 and a second coil 72, and the first coil 71 and the second coil 72 are configured to receive alternating current of a predetermined frequency to generate an alternating magnetic field. The first coil 71 and the second coil 72 are both substantially square, and compared with a circular coil, the square coil has a larger charging range and the charging device is more flexibly placed. And the first coil 71 and the second coil 72 are placed in a substantially concentric manner so that the alternating magnetic field generated by the excitation is uniform. The second coil 72 is nested inside the first coil 71, so that the usable charging range of the charging device is enlarged, and the charging device can obtain good charging efficiency without accurate positioning.
It should be understood that according to the requirement of the actual charging device, a plurality of square coils with different sizes can be arranged and nested, so that the charging range is larger, and the charging of a plurality of charging devices can be realized simultaneously.
Fig. 8 is a structural view of a power transmitting coil module according to a fourth embodiment of the present application. As shown in fig. 8, the power transmission coil module 8 includes a first coil 81, a second coil 82, and a third coil 83, and the first coil 81, the second coil 82, and the third coil 83 are configured to receive an alternating current of a predetermined frequency to generate an alternating magnetic field. Wherein the first coil 81, the second coil 82 and the third coil 83 are all substantially square in shape, the square coil has a larger charging range and the charging device is more flexible to place compared with a circular coil. In fig. 8, the second coil 82 and the third coil 83 are nested inside the first coil 81 side by side, and compared with the nested arrangement of the coils with different sizes, the arrangement of the coils of the power transmitting coil module 8 saves raw materials and reduces the manufacturing cost under the condition that the charging ranges are the same.
It should be understood that in the embodiments of the present application, the coils of the power transmitting coil module are exemplified by circles and squares, and in practice, the adaptively shaped coils may be designed according to the shape of the charging device and the shape of the power receiving coil thereof. According to the distribution of the electric energy receiving coils in the charging equipment, the coils with different sizes can be nested one by one, and the centers of the coils can also be different.
Preferably, be applicable to most of battery charging outfit for electric energy transmitting coil module, N not unidimensional coil of electric energy transmitting coil module arranges and sets up in same plane for the charger of using this application electric energy transmitting coil module is thinner, and convenient to carry easily places. However, if the charging device is a special three-dimensional shape, such as a ball shape, the power transmitting coil module may be designed to have a shape that is convenient for the charging device to be placed, such as a boat shape.
In summary, in the electric energy transmitting coil module according to the embodiment of the present application, the coils with different sizes are arranged in a nested manner, so that the charging device can perform effective charging without accurate positioning, the degree of freedom in each direction on the charging plane is ensured, and the complexity of coil configuration is simplified to the maximum extent.
Fig. 9 is a circuit diagram of a power transmitting circuit of an embodiment of the present application. As shown in fig. 9, the power transmitting circuit 9 includes a power transmitting module Ls, a controller A, N capacitors and N switches. The power transmitting module Ls includes N coils L1-LN, each of which is configured to receive an alternating current of a predetermined frequency to generate an alternating magnetic field. Wherein N is an integer greater than or equal to 2, the N coils have different sizes and are placed in a nested manner.
The arrangement of the coils in the power transmitting module Ls is shown in fig. 2, 6, 7 and 8. In fig. 2, the first coil 21 and the second coil 22 are both substantially circular in shape and are disposed in a substantially concentric manner, so that the alternating magnetic field generated by excitation is uniform and the placement of the charging device is more flexible. The second coil 22 is nested inside the first coil 21, so that the usable charging range of the charging device is increased, and the charging device can obtain good charging efficiency without accurate positioning. In fig. 6, three circular coils with different sizes and basically arranged in a concentric manner are nested one by one, so that the usable charging range of the charging device is larger, and further, the charging of a plurality of charging devices can be realized simultaneously. Therefore, the number of coils in the power transmitting coil module can be related to the shape and the number of the charging devices. In fig. 7, the first coil 71 and the second coil 72 are both substantially square in shape, and the square coil has a larger charging range and more flexible placement of the charging device than the circular coil. And the first coil 71 and the second coil 72 are placed in a substantially concentric manner so that the alternating magnetic field generated by the excitation is uniform. The second coil 72 is nested inside the first coil 71, so that the usable charging range of the charging device is enlarged, and the charging device can obtain good charging efficiency without accurate positioning. In fig. 8, the second coil 82 and the third coil 83 are nested inside the first coil 81 side by side, and compared with the nested arrangement of the coils with different sizes, the arrangement of the coils in the electric energy transmitting coil module 8 saves raw materials and reduces the manufacturing cost under the condition that the charging ranges are the same.
It should be understood that in the embodiments of the present application, the coils of the power transmitting coil module are exemplified by circles and squares, and in fact, the adaptively shaped coils may be designed according to the shape of the charging device and the shape of the power receiving coil thereof. According to the distribution of the electric energy receiving coils in the charging equipment, the coils with different sizes can be nested one by one, and the centers of the coils can also be different.
Preferably, be applicable to most of battery charging outfit for electric energy transmitting coil module, N not unidimensional coil of electric energy transmitting coil module arranges and sets up in same plane for the charger of using this application electric energy transmitting coil module is thinner, and convenient to carry easily places. However, if the charging device is a special three-dimensional shape, such as a ball shape, the power transmitting coil module may be designed to have a shape that is convenient for the charging device to be placed, such as a boat shape.
The N capacitors and the N switches are respectively connected with the N coils in the electric energy transmitting coil module Ls in series, the mth capacitor and the mth coil form a resonant circuit which works under a preset working frequency, and m is an integer less than or equal to N. For example, C1, S1 and L1 are connected in series to an output port of alternating current, and C1 and L1 constitute a resonance circuit operating at a predetermined operating frequency, which resonates to generate an alternating magnetic field.
The controller A is configured to obtain a parameter p (such as an induced voltage) representing coupling inductance between each coil and the corresponding power receiving coil, and select one of the N coils to transmit power outwards according to the parameter p. For example, in a first control manner of the controller a, when the charging device is placed on the electric energy transmitting coil module Ls, the controller a respectively collects parameters p1-pN representing the coupling inductance when the N coils work independently, and controls the coil corresponding to the largest parameter to work to charge the charging device. In a second control mode of the controller a, a parameter threshold pl representing the coupling inductance is set, and when the parameter p acquired by the controller a is not less than the parameter threshold pl, the working coil at that time is kept working. When the parameter p acquired by the controller A is smaller than the parameter threshold pl, the controller A is controlled to switch to the adjacent coil to work and acquire the parameter p at the moment until the acquired parameter p is not smaller than the parameter threshold pl, and the working coil is kept to work.
In a first control mode of the controller a, after the controller a acquires a parameter p representing the coupling inductance, a control signal Ctl is output to control the conduction of a switch in a branch where the coil corresponding to the maximum parameter is located, so as to control the coil to work. For example, if the coil L1 operates, and the parameter p1 representing the coupling inductance acquired by the controller a is the largest, the control signal Ctl output by the controller a controls S1 to be turned on, so that the coil L1 and the coil C1 resonate to generate an alternating magnetic field at a predetermined operating frequency. In the charging process, the charging equipment may move to the periphery, so that the parameters p1-pN representing the coupling inductance when the N coils work independently can be collected once every a preset time period for comparison, and the coil corresponding to the largest parameter is selected to work to charge the charging equipment, so that the charging efficiency is improved.
In a second control mode of the controller a, after the controller a collects the parameter p of the coupling inductor, the parameter p is compared with the parameter threshold pl. When the acquired parameter p is smaller than the parameter threshold pl, the controller A outputs a control signal Ctl, the control signal Ctl controls the switch in the branch where the currently working coil is located to be switched off, and controls the switch in the branch where the coil adjacent to the current working coil is located to be switched on until the acquired parameter p is not smaller than the parameter threshold pl, and the working coil is kept working. The controller A collects the parameter p of the coil which works at present once every preset time period, and timely judges the size of the parameter p and the parameter threshold value of the coil which works at present, so that the charging efficiency of the charging equipment is improved.
According to the embodiment of the application, the electric energy transmitting coil module which is formed by the coils which are different in size and are mutually nested in different modes and the controller which controls the electric energy transmitting coil module by different control methods are adopted, so that the charging equipment can be effectively charged without accurate positioning, the freedom degrees of all directions on a charging plane are ensured, the charging efficiency of the charging equipment is improved, and the complexity of coil configuration is simplified to the greatest extent.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (4)
1. A power transmitting circuit comprising:
the electric energy transmitting coil module comprises N coils, each coil is configured to receive alternating current with a preset frequency to generate an alternating magnetic field, and electric energy is transmitted to external charging equipment in a wireless mode; the controller is used for controlling the electric energy transmitting coil module;
wherein N is an integer greater than or equal to 2, the N coils have different sizes and are placed in a nested manner;
j coils are nested side by side inside the large-size coil, wherein j is an integer smaller than N, and the j coils are not overlapped;
the controller is configured to acquire parameters representing coupling inductance between each coil and the corresponding electric energy receiving coil, and select one of the N coils to emit electric energy outwards according to the parameters.
2. The power transmitting circuit of claim 1, wherein the N coils are disposed in a same plane.
3. The power transmitting circuit according to claim 1 or 2, further comprising:
n capacitors connected in series with the N coils, respectively;
and the N switches are respectively connected with the N coils in series.
4. The power transmitting circuit of claim 3, wherein the mth capacitor and the mth coil form a resonant circuit operating at a predetermined operating frequency, and m is an integer less than or equal to N;
the controller is configured to control one of the N coils to emit electric energy outwards by controlling one of the N switches to be conducted.
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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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| CN107332360B (en) | 2017-08-11 | 2019-12-20 | 宁波微鹅电子科技有限公司 | Wireless electric energy transmission system, electric energy transmitting terminal, electric energy receiving terminal and detection method |
| CN207925287U (en) | 2017-12-25 | 2018-09-28 | 宁波微鹅电子科技有限公司 | A kind of coil module, radio energy radiating circuit and receiving circuit |
| CN108878112B (en) * | 2018-06-25 | 2020-06-02 | 苏州奥彼电源有限公司 | Wireless charging coil |
| US11159054B2 (en) * | 2018-07-24 | 2021-10-26 | Apple Inc. | Wireless power transmitting devices |
| 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 |
| 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 |
| CN113834376A (en) * | 2021-09-17 | 2021-12-24 | 西北工业大学 | Electromagnetic force generating device with coaxial cylindrical inductors arranged in parallel |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162226A (en) * | 2015-09-30 | 2015-12-16 | 武汉大学 | Enhanced-transmitting-coil-based dynamic wireless power supply system and method of electric car |
| CN106059101A (en) * | 2016-07-19 | 2016-10-26 | 黄绍华 | Wireless charger and charging method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100792308B1 (en) * | 2006-01-31 | 2008-01-07 | 엘에스전선 주식회사 | A contact-less power supply, contact-less charger systems and method for charging rechargeable battery cell |
| KR20160057278A (en) * | 2014-11-13 | 2016-05-23 | 엘지전자 주식회사 | Wireless power transmitter,wireless power receiver, and wireless charging system |
-
2017
- 2017-12-14 CN CN201711337074.4A patent/CN108109831B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105162226A (en) * | 2015-09-30 | 2015-12-16 | 武汉大学 | Enhanced-transmitting-coil-based dynamic wireless power supply system and method of electric car |
| CN106059101A (en) * | 2016-07-19 | 2016-10-26 | 黄绍华 | Wireless charger and charging method thereof |
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