CN110040011B - Wireless charging method and control device - Google Patents
Wireless charging method and control device Download PDFInfo
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- CN110040011B CN110040011B CN201910314588.0A CN201910314588A CN110040011B CN 110040011 B CN110040011 B CN 110040011B CN 201910314588 A CN201910314588 A CN 201910314588A CN 110040011 B CN110040011 B CN 110040011B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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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
- H02J50/12—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling of the resonant type
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/14—Plug-in electric vehicles
Abstract
The invention relates to a wireless charging method and a control device, wherein the method is applied to a wireless charging system, the wireless charging system comprises a controller, transmitting coils and a sensor, the transmitting coils form a transmitting coil array, and the controller is respectively and electrically connected with the transmitting coils and the sensor. The method comprises the following steps: acquiring the type of a receiving coil on the electric automobile to be charged; acquiring the corresponding position of the receiving coil on the transmitting coil array, which is detected by the sensor; determining a plurality of target transmitting coils from the transmitting coil array according to the type of the receiving coil and the corresponding positions of the receiving coil on the transmitting coil array; grouping the target transmitting coils according to the type of the receiving coil; and introducing currents with different phases into the target transmitting coils of different groups, so that the receiving coil charges the battery of the electric automobile.
Description
Technical Field
The invention relates to the technical field of electric vehicle charging, in particular to a wireless charging method and a control device.
Background
With the continuous development of automobile technology, automobiles have become important transportation tools for people to live and go out. With the increasing severity of the problems of environmental pollution and energy shortage, energy conservation and environmental protection become important directions for the development of the automobile industry, and electric automobiles are paid more attention and developed unprecedentedly due to the guidance of national policies and the increasing severity of emissions. At present, most of electric vehicles use lithium batteries, and the charging mode adopted by the batteries is mainly a fixed charging pile, but the batteries have the following problems: the charging time is long, and a great deal of time is wasted for consumers; the number of vehicles charged by one charging station at the same time is limited; outdoor wired charging piles are vulnerable to damage; and a special charging station is built, so that a large amount of land is occupied.
The electric vehicle charging system also utilizes a wireless electric energy transmission technology to realize the short-distance wireless transmission of electric energy through an electromagnetic induction coupling principle, and can realize the convenient and flexible charging of the electric vehicle in places such as a household garage, a public parking space and even a street and the like based on the technology. The traditional single-phase single-primary-side transmitting coil wireless power transmission system is used for wirelessly charging the electric automobile in the prior art, and the wireless charging system has the obvious defects that: the magnetic field generated by the primary magnetic energy transmitting coil is unbalanced, the magnetic field intensity at the central position of the coil is large, and the magnetic field intensity at the periphery of the coil is small. In order to ensure the charging efficiency of the electric vehicle, the pickup coil mechanism installed on the electric vehicle needs to be positioned right above the primary magnetic energy emission mechanism, otherwise, a large amount of energy is lost, and the high-efficiency charging of the battery is not facilitated. In order to improve the charging efficiency, the wireless power supply device needs to be well aligned when parking, and the parking technology of the automobile user is highly required.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a wireless charging method and a control device, which can ensure flexible parking of an electric vehicle in a wide range and can realize efficient and reliable charging of the electric vehicle.
In order to solve the above problems, the present invention provides a wireless charging method, which is applied to a wireless charging system, where the wireless charging system includes a controller, a transmitting coil and a sensor, the transmitting coil array is composed of a plurality of transmitting coils, and the controller is electrically connected to the transmitting coil and the sensor respectively; the method comprises the following steps:
s1, acquiring the type of a receiving coil on the electric automobile to be charged;
s2, acquiring the corresponding position of the receiving coil on the transmitting coil array, which is detected by the sensor;
s3, determining a plurality of target transmitting coils from the transmitting coil array according to the types of the receiving coils and the corresponding positions of the receiving coils on the transmitting coil array;
s4, grouping the target transmitting coils according to the types of the receiving coils;
and S5, currents with different phases are led into target transmitting coils of different groups, so that the receiving coils charge the battery of the electric automobile.
Further, the method further comprises:
acquiring charging information of the electric vehicle battery;
judging whether charging is finished or not according to the charging information;
and when the charging is finished, controlling to disconnect the current of the target transmitting coil.
Further, the determining a plurality of target transmit coils from the transmit coil array according to the type of the receive coil and the corresponding position of the receive coil on the transmit coil array comprises:
analyzing the spatial magnetic field distribution required by the receiving coil at the corresponding position on the transmitting coil array according to the type of the receiving coil;
and according to the spatial magnetic field distribution, taking the transmitting coil required by generating the magnetic lines of the spatial magnetic field distribution in the transmitting coil array as a target transmitting coil.
Further, the grouping the target transmit coils according to the type of the receive coil comprises: and grouping the target transmitting coils according to the direction of the magnetic lines of the space magnetic field distribution required to be generated by the target coil.
Specifically, the target transmitting coil includes a first target transmitting coil and a second target transmitting coil, the first target transmitting coil is a transmitting coil in the transmitting coil array that coincides with the projection of the receiving coil and is within a selected area of a projection frame, and the second target transmitting coil is a transmitting coil in the transmitting coil array that is located around the first target transmitting coil.
Preferably, the number of target transmit coils of each said group is the same.
Further, the determining a plurality of target transmit coils from the transmit coil array according to the type of the receive coil and the corresponding position of the receive coil on the transmit coil array further comprises:
acquiring the charging power of the electric automobile to be charged;
and determining the number of target transmitting coils according to the charging power.
Further, the passing of currents of different phases to the target transmitting coils of different groups comprises: and the phase difference of the current introduced into the target transmitting coils of every two adjacent groups is the same.
Another aspect of the present invention provides a wireless charging control apparatus, including:
the acquisition unit is used for acquiring the type of a receiving coil on the electric automobile to be charged;
the first determining unit is used for determining the corresponding position of the receiving coil on the transmitting coil array according to the voltage information of the transmitting coil detected by the sensor;
a second determining unit, configured to determine a plurality of target transmitting coils from the transmitting coil array according to the type of the receiving coil and the corresponding positions of the receiving coils on the transmitting coil array;
a grouping unit for grouping the target transmitting coils according to the type of the receiving coil;
and the control unit is used for introducing currents with different phases into the target transmitting coils of different groups to enable the receiving coils to charge the battery of the electric automobile.
Further, the acquiring unit is further configured to acquire charging information of the electric vehicle battery;
the device also comprises a judging unit used for judging whether the charging is finished according to the charging information;
the control unit is further used for controlling the current of the target transmitting coil to be switched off when the charging is completed.
Due to the technical scheme, the invention has the following beneficial effects:
(1) according to the wireless charging method, the plurality of transmitting coils are arranged in an array mode to form a large-area magnetic energy charging area, and the electric automobile can be parked at any position in the charging area and can be efficiently and reliably charged without being accurately aligned with the charging position.
(2) According to the wireless charging method, alternating currents with different phases are applied to target transmitting coils of different groups, so that the distribution of space alternating electromagnetic fields required by different coil structures such as a single coil, a double-D coil and a DDQ coil can be simulated, and one transmitting coil array can transmit wireless electric energy to receiving coils with different structures.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a flowchart of a wireless charging method according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a wireless charging control device according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a wireless charging system in which a receiving coil is a single coil according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a wireless charging system with a dual D-coil receiving coil according to an embodiment of the present invention.
In the figure: 1-wireless charging control device, 11-acquisition unit, 12-first determination unit, 13-second determination unit, 14-grouping unit, 15-control unit, 16-judgment unit, 2-transmitting coil, 3-receiving coil.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Example 1
Referring to the accompanying drawings 1, 3 and 4 in the specification, the present embodiment provides a wireless charging method, where the method is applied to a wireless charging system, the wireless charging system includes a controller, a transmitting coil 2 and a sensor, the transmitting coil 2 forms a transmitting coil array, and the controller is electrically connected to the transmitting coil 2 and the sensor, respectively.
In the embodiment of the invention, the transmitting coil 2 is a hexagonal coil, a plurality of transmitting coils 2 are arranged in a honeycomb array, and the current of each transmitting coil 2 is independently controlled by the controller; the sensor is a position sensor. It should be noted that, in a possible embodiment, the transmitting coil 2 may be a circular coil or a quadrilateral coil, and the transmitting coil 2 may also be provided with a magnetic core structure.
In the embodiment of the invention, the wireless charging method adopted by the system comprises the following steps:
and S1, acquiring the type of the receiving coil on the electric automobile to be charged.
In the embodiment of the invention, the type of the receiving coil can be obtained through communication with the electric automobile to be charged. In the embodiment of the present invention, the types of the receiving coil 3 of the electric vehicle include: a single coil, a double D coil, and a DDQ coil.
And S2, acquiring the corresponding position of the receiving coil on the transmitting coil array detected by the sensor.
In the embodiment of the present invention, the corresponding position of the receiving coil on the transmitting coil array is detected by the position sensor and sent to the controller.
S3, determining a plurality of target transmitting coils from the transmitting coil array according to the types of the receiving coils and the corresponding positions of the receiving coils on the transmitting coil array.
In the embodiment of the present invention, the spatial magnetic field distribution required by the receiving coil at the corresponding position on the transmitting coil array may be analyzed according to the type of the receiving coil;
and according to the spatial magnetic field distribution, taking the transmitting coil required by generating the magnetic lines of the spatial magnetic field distribution in the transmitting coil array as a target transmitting coil.
Specifically, the target transmitting coil includes a first target transmitting coil and a second target transmitting coil, the first target transmitting coil is a transmitting coil in the transmitting coil array that coincides with the projection of the receiving coil and is within a selected area of a projection frame, and the second target transmitting coil is a transmitting coil in the transmitting coil array that is located around the first target transmitting coil.
In this embodiment of the present invention, when the receiving coil is a single coil, the target transmitting coil may be selected from a plurality of the first target transmitting coils and a plurality of the second target transmitting coils; when the receiving coil is a double-D coil or a DDQ coil, the target transmitting coil may be selected as a plurality of the first target transmitting coils.
Further, the step S3 further includes the steps of:
acquiring the charging power of the electric automobile to be charged;
and determining the number of target transmitting coils according to the charging power.
In the embodiment of the invention, the charging power of the electric automobile to be charged can be acquired through communication with the electric automobile.
It should be noted that, in one possible embodiment, the charging power of the electric vehicle may also be the maximum charging power that the charging system can provide for the electric vehicle.
It should be noted that, in a possible embodiment, the step of obtaining the charging power of the electric vehicle to be charged, and determining the number of the target transmitting coils according to the charging power may also be performed before the step S3.
S4, grouping the target transmitting coils according to the types of the receiving coils.
In the embodiment of the present invention, the target transmitting coils may be grouped according to the direction of the magnetic lines of the spatial magnetic field distribution that the target coil needs to generate.
As a preferred embodiment, the number of target transmitting coils of each of the groups is the same.
In this embodiment of the present invention, when the receiving coil is a single coil, the first target transmitting coil may be regarded as a first group, and the second target transmitting coil may be regarded as a second group; when the receiving coils are double D coils or DDQ coils, the transmitting coils in the target transmitting coil array that coincide with the projection of one of the D coils of the receiving coils and are within the selected area of the projection frame may be taken as a first group, and the transmitting coils in the target transmitting coil array that coincide with the projection of the other D coil of the receiving coils and are within the selected area of the projection frame may be taken as a second group.
It should be noted that, in a possible embodiment, when the receiving coil is a single coil, the target transmitting coil may be further divided into three groups distributed in a "pinking" shape.
And S5, currents with different phases are led into target transmitting coils of different groups, so that the receiving coils charge the battery of the electric automobile.
In the embodiment of the invention, the phase difference of the currents introduced into the target transmitting coils of every two adjacent groups is the same.
In the embodiment of the invention, the current for connecting the target transmitting coils can be controlled, and the alternating currents with different phases are introduced into the target transmitting coils of different groups, so that the spatial alternating electromagnetic field distribution required by a single coil structure, a double-D coil structure or a DDQ coil structure can be simulated, and the electric energy transmission with the receiving coil can be realized.
Specifically, when the target transmitting coils are divided into two groups, the currents fed to the target transmitting coils of the first group and the second group at any time are the same in magnitude and are staggered by 180 degrees in phase, for example, when the current fed to the target transmitting coils of the first group is clockwise, the current fed to the target transmitting coils of the second group is counterclockwise; when the target transmitting coils are divided into three groups, the currents which are introduced into the target transmitting coils of the first group, the second group and the third group at any time are same in magnitude and are staggered by 120 degrees in phase.
In one possible embodiment, the alternating current is implemented using a compensation network, such as a capacitor of fixed capacity connected in series with each transmitting coil to form an LC series circuit, and an alternating voltage of a certain frequency, such as a sine wave voltage, a square wave voltage, etc., is applied to the LC series circuit to form an alternating current in the coil. Further, the frequency of the applied alternating voltage may also be set close to or coincident with the resonance frequency of the LC series circuit, thereby achieving that the alternating current in the small coil is a sinusoidal current or a near sinusoidal current.
Further, the wireless charging method further comprises the steps of:
acquiring charging information of the electric vehicle battery;
judging whether charging is finished or not according to the charging information;
and when the charging is finished, controlling to disconnect the current of the target transmitting coil.
In the embodiment of the invention, the charging information of the vehicle-mounted battery can be acquired through communication with the electric automobile.
Example 2
Referring to fig. 2 in the specification, the present embodiment provides a wireless charging control apparatus, the wireless charging control apparatus 1 includes an acquisition unit 11, a first determination unit 12, a second determination unit 13, a grouping unit 14, and a control unit 15;
the acquiring unit 11 is used for acquiring the type of a receiving coil on the electric automobile to be charged;
the first determining unit 12 is configured to determine a corresponding position of the receiving coil on the transmitting coil array according to the voltage information of the transmitting coil detected by the sensor;
the second determining unit 13 is configured to determine a plurality of target transmitting coils from the transmitting coil array according to the type of the receiving coil and the corresponding positions of the receiving coils on the transmitting coil array;
the grouping unit 14 is configured to group the target transmitting coils according to the type of the receiving coil;
the control unit 15 is configured to apply currents with different phases to the target transmitting coils of different groups, so that the receiving coil charges a battery of the electric vehicle.
Further, the obtaining unit 11 is further configured to obtain charging information of the electric vehicle battery;
the device also comprises a judging unit 16 for judging whether charging is finished according to the charging information;
the control unit 15 is further configured to control to turn off the current of the target transmitting coil when charging is completed.
In a possible embodiment, the obtaining unit 11 may be further configured to obtain a charging power of the electric vehicle to be charged, and the second determining unit 13 may be further configured to determine the number of target transmitting coils according to the charging power of the electric vehicle to be charged.
The wireless charging method and the control device have the following beneficial effects:
(1) according to the wireless charging method, the plurality of transmitting coils are arranged in an array mode to form a large-area magnetic energy charging area, and the electric automobile can be parked at any position in the charging area and can be efficiently and reliably charged without being accurately aligned with the charging position.
(2) According to the wireless charging method, alternating currents with different phases are applied to target transmitting coils of different groups, so that the distribution of space alternating electromagnetic fields required by different coil structures such as a single coil, a double-D coil and a DDQ coil can be simulated, and one transmitting coil array can transmit wireless electric energy to receiving coils with different structures.
The foregoing description has disclosed fully preferred embodiments of the present invention. It should be noted that those skilled in the art can make modifications to the embodiments of the present invention without departing from the scope of the appended claims. Accordingly, the scope of the appended claims is not to be limited to the specific embodiments described above.
Claims (9)
1. A wireless charging method is applied to a wireless charging system, the wireless charging system comprises a controller, transmitting coils and a sensor, the transmitting coils form a transmitting coil array, and the controller is electrically connected with the transmitting coils and the sensor respectively; characterized in that the method comprises the following steps:
s1, acquiring the type of a receiving coil on the electric automobile to be charged;
s2, acquiring the corresponding position of the receiving coil on the transmitting coil array detected by the sensor,
s3, determining a plurality of target transmitting coils from the transmitting coil array according to the types of the receiving coils and the corresponding positions of the receiving coils on the transmitting coil array;
the target transmitting coil comprises a first target transmitting coil and a second target transmitting coil, the first target transmitting coil is a transmitting coil which is in projection superposition with the receiving coil in the transmitting coil array and is in a selected area of a projection frame, and the second target transmitting coil is a transmitting coil which is positioned at the periphery of the first target transmitting coil in the transmitting coil array;
s4, grouping the target transmitting coils according to the types of the receiving coils, and dividing the target transmitting coils into two groups;
if the receiving coil is a single coil, taking the first target transmitting coil as a first group, and taking the second target transmitting coil as a second group;
if the receiving coil is a double-D coil or a DDQ coil, taking the transmitting coil in the projection frame selected area which is superposed with the projection of one D coil of the receiving coil in the target transmitting coil as a first group, and taking the transmitting coil in the projection frame area which is superposed with the projection of the other D coil of the receiving coil in the transmitting coil array as a second group;
and S5, currents with different phases are led into target transmitting coils of different groups, so that the receiving coils charge the battery of the electric automobile.
2. A wireless charging method according to claim 1, wherein the method further comprises:
acquiring charging information of the electric vehicle battery;
judging whether charging is finished or not according to the charging information;
and when the charging is finished, controlling to disconnect the current of the target transmitting coil.
3. A wireless charging method according to claim 1 or 2, wherein said determining a plurality of target transmit coils from the transmit coil array based on the type of the receive coil and the corresponding position of the receive coil on the transmit coil array comprises:
analyzing the spatial magnetic field distribution required by the receiving coil at the corresponding position on the transmitting coil array according to the type of the receiving coil;
and according to the spatial magnetic field distribution, taking the transmitting coil required by generating the magnetic lines of the spatial magnetic field distribution in the transmitting coil array as a target transmitting coil.
4. The wireless charging method of claim 3, wherein the grouping the target transmit coils according to the type of the receive coil comprises: and grouping the target transmitting coils according to the direction of the magnetic lines of the space magnetic field distribution required to be generated by the target coil.
5. A wireless charging method according to claim 1 or 2, wherein the number of target transmitting coils of each said group is the same.
6. A wireless charging method according to claim 1 or 2, wherein said determining a plurality of target transmit coils from the transmit coil array based on the type of the receive coil and the corresponding position of the receive coil on the transmit coil array further comprises:
acquiring the charging power of the electric automobile to be charged;
and determining the number of target transmitting coils according to the charging power.
7. The wireless charging method according to claim 1 or 2, wherein the passing of currents of different phases to the target transmitting coils of different groups comprises: and the phase difference of the current introduced into the target transmitting coils of every two adjacent groups is the same.
8. A wireless charging control apparatus, the apparatus comprising:
the acquisition unit is used for acquiring the type of a receiving coil on the electric automobile to be charged;
the first determining unit is used for acquiring the corresponding position of the receiving coil detected by the sensor on the transmitting coil array;
determining a plurality of target transmitting coils from the transmitting coil array according to the type of the receiving coil and the corresponding positions of the receiving coil on the transmitting coil array;
the target transmitting coil comprises a first target transmitting coil and a second target transmitting coil, the first target transmitting coil is a transmitting coil which is in projection superposition with the receiving coil in the transmitting coil array and is in a selected area of a projection frame, and the second target transmitting coil is a transmitting coil which is positioned at the periphery of the first target transmitting coil in the transmitting coil array;
a grouping unit, configured to group the target transmitting coils according to the type of the receiving coil, and divide the target transmitting coils into two groups;
if the receiving coil is a single coil, taking the first target transmitting coil as a first group, and taking the second target transmitting coil as a second group;
if the receiving coil is a double-D coil or a DDQ coil, taking the transmitting coil in the projection frame selected area which is superposed with the projection of one D coil of the receiving coil in the target transmitting coil as a first group, and taking the transmitting coil in the projection frame area which is superposed with the projection of the other D coil of the receiving coil in the transmitting coil array as a second group;
and the control unit is used for introducing currents with different phases into the target transmitting coils of different groups to enable the receiving coils to charge the battery of the electric automobile.
9. The wireless charging control device according to claim 8,
the acquisition unit is further used for acquiring the charging information of the electric automobile battery;
the device also comprises a judging unit used for judging whether the charging is finished according to the charging information;
the control unit is further used for controlling the current of the target transmitting coil to be switched off when the charging is completed.
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| CN201910314588.0A CN110040011B (en) | 2019-04-18 | 2019-04-18 | Wireless charging method and control device |
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| CN201910314588.0A CN110040011B (en) | 2019-04-18 | 2019-04-18 | Wireless charging method and control device |
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| CN110816323A (en) * | 2019-10-30 | 2020-02-21 | 南京航空航天大学 | Automobile wireless charging system and method based on transmitting coil array focusing |
| CN113022335A (en) * | 2019-12-24 | 2021-06-25 | 上海海拉电子有限公司 | Wireless quick charging system and method for electric automobile |
| CN113346634B (en) * | 2021-06-23 | 2022-07-15 | 中国科学技术大学 | Method and system for increasing total energy transmission amount in magnetic resonance charging system |
| CN113612315A (en) * | 2021-09-17 | 2021-11-05 | 维沃移动通信有限公司 | Wireless charging seat, control method and control device thereof and electronic equipment |
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