CN109760531B - Dynamic wireless charging receiving circuit and dynamic wireless charging system - Google Patents
Dynamic wireless charging receiving circuit and dynamic wireless charging system Download PDFInfo
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- CN109760531B CN109760531B CN201910085870.6A CN201910085870A CN109760531B CN 109760531 B CN109760531 B CN 109760531B CN 201910085870 A CN201910085870 A CN 201910085870A CN 109760531 B CN109760531 B CN 109760531B
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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
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/72—Electric energy management in electromobility
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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
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a dynamic wireless charging receiving circuit and a dynamic wireless charging system, which comprise N receiving coils, N capacitors, N synchronous rectifying circuits, N anti-reverse circuits for preventing reverse current flow and a DC/DC conversion circuit, wherein the N receiving coils, the N capacitors, the N synchronous rectifying circuits, the N anti-reverse circuits and the DC/DC conversion circuit are arranged on an electric automobile; the N receiving coils are sequentially arranged according to the driving direction of the electric automobile under the condition that at least one receiving coil realizes full-power receiving; the synchronous rectification circuit is used for converting input alternating current into direct current so that the direct current can be subjected to voltage conversion by the DC/DC conversion circuit to meet the charging requirement of the vehicle-mounted battery. Therefore, the plurality of receiving coils are arranged on the electric automobile, so that full-power receiving can be realized by at least one receiving coil in the plurality of receiving coils according to the specific laying condition of the transmitting coil, the fluctuation of the charging power of the vehicle-mounted battery is reduced, the continuous high-frequency charging and discharging of the vehicle-mounted battery are avoided, and the service life of the vehicle-mounted battery is prolonged.
Description
Technical Field
The invention relates to the field of wireless charging, in particular to a dynamic wireless charging receiving circuit and a dynamic wireless charging system.
Background
With the development of wireless power transmission technology, the dynamic wireless charging system of the electric vehicle is gradually widely applied. Currently, the transmitting coils in the dynamic wireless charging system are mainly laid in a sequential arrangement, as shown in fig. 1. And the electric automobile is only provided with one receiving coil and is used for receiving power sent by the corresponding transmitting coil when the electric automobile runs on a charging road of the dynamic wireless charging system so as to realize the autonomous charging of the electric automobile. Under the general condition, in order to improve the uniformity of the magnetic field intensity of the transmitting end of the dynamic wireless charging system, a certain interval exists between adjacent transmitting coils, when the electric automobile runs between the adjacent transmitting coils, the receiving coils cannot receive full power, even a power transmission zero point possibly exists, so that the charging power fluctuation of the vehicle-mounted battery of the electric automobile is large, the vehicle-mounted battery is charged and discharged continuously at high frequency, and the service life of the vehicle-mounted battery is further shortened.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a dynamic wireless charging receiving circuit and a dynamic wireless charging system.A plurality of receiving coils are arranged on an electric automobile, so that at least one receiving coil in the plurality of receiving coils can realize full-power receiving according to the specific laying condition of a transmitting coil in the dynamic wireless charging system, thereby reducing the fluctuation of the charging power of a vehicle-mounted battery, avoiding the continuous high-frequency charging and discharging of the vehicle-mounted battery, and further prolonging the service life of the vehicle-mounted battery.
In order to solve the above technical problem, the present invention provides a dynamic wireless charging receiving circuit, which includes N receiving coils, N capacitors, N synchronous rectification circuits, N anti-reverse circuits for preventing reverse current flow, and a DC/DC conversion circuit, which are disposed on an electric vehicle, where N is an integer greater than 1, and where:
the first end of the Nth receiving coil is connected with the first input end of the Nth synchronous rectification circuit, the second end of the Nth receiving coil is connected with the first end of the Nth capacitor, the second end of the Nth capacitor is connected with the second input end of the Nth synchronous rectification circuit, the output end of the Nth synchronous rectification circuit is connected with the input end of the Nth anti-reverse circuit, the output end of the Nth anti-reverse circuit is connected with the input end of the DC/DC conversion circuit, and the output end of the DC/DC conversion circuit is connected with a vehicle-mounted battery of the electric vehicle; the N receiving coils are sequentially arranged according to the driving direction of the electric automobile under the condition that at least one receiving coil realizes full-power receiving;
the synchronous rectification circuit is used for converting input alternating current into direct current, so that the direct current is subjected to voltage conversion by the DC/DC conversion circuit to meet the charging requirement of the vehicle-mounted battery.
Preferably, the anti-reverse circuit comprises a diode, wherein:
the anode of the diode is used as the input end of the anti-reverse circuit, and the cathode of the diode is used as the output end of the anti-reverse circuit.
Preferably, N of the receiving coils are arranged in a straight line.
Preferably, the number of the receiving coils is 2.
Preferably, the length of the interval between adjacent transmitting coils in the dynamic wireless charging system is less than the length of a single receiving coil.
In order to solve the above technical problem, the present invention further provides a dynamic wireless charging system, which includes a dynamic wireless charging transmitting circuit and any one of the above dynamic wireless charging receiving circuits.
Preferably, the circuit structure of the dynamic wireless charging transmitting circuit is specifically an LCCL topology.
The invention provides a dynamic wireless charging receiving circuit, which comprises N receiving coils, N capacitors, N synchronous rectifying circuits, N anti-reverse circuits for preventing reverse current flow and a DC/DC conversion circuit, wherein the N receiving coils, the N capacitors, the N synchronous rectifying circuits, the N anti-reverse circuits and the DC/DC conversion circuit are arranged on an electric automobile, and the dynamic wireless charging receiving circuit comprises: the first end of the Nth receiving coil is connected with the first input end of the Nth synchronous rectification circuit, the second end of the Nth receiving coil is connected with the first end of the Nth capacitor, the second end of the Nth capacitor is connected with the second input end of the Nth synchronous rectification circuit, the output end of the Nth synchronous rectification circuit is connected with the input end of the Nth anti-reverse circuit, the output end of the Nth anti-reverse circuit is connected with the input end of the DC/DC conversion circuit, and the output end of the DC/DC conversion circuit is connected with a vehicle-mounted battery of the electric vehicle; the N receiving coils are sequentially arranged according to the driving direction of the electric automobile under the condition that at least one receiving coil realizes full-power receiving; the synchronous rectification circuit is used for converting input alternating current into direct current so that the direct current can be subjected to voltage conversion by the DC/DC conversion circuit to meet the charging requirement of the vehicle-mounted battery.
Therefore, the plurality of receiving coils are arranged on the electric automobile, so that at least one receiving coil in the plurality of receiving coils can receive full power according to the specific laying condition of the transmitting coil in the dynamic wireless charging system, the fluctuation of the charging power of the vehicle-mounted battery is reduced, the continuous high-frequency charging and discharging of the vehicle-mounted battery are avoided, and the service life of the vehicle-mounted battery is prolonged.
The invention also provides a dynamic wireless charging system, which has the same beneficial effects as the dynamic wireless charging system.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram illustrating a transmitter coil of a dynamic wireless charging system in the prior art;
fig. 2 is a schematic structural diagram of a dynamic wireless charging receiving circuit according to the present invention;
fig. 3 is a schematic structural diagram of a dynamic wireless charging transmitting circuit according to the present invention;
fig. 4 is a schematic diagram of the arrangement of the transmitting coil and the receiving coil in the dynamic wireless charging system provided by the present invention.
Detailed Description
The core of the invention is to provide a dynamic wireless charging receiving circuit and a dynamic wireless charging system, wherein a plurality of receiving coils are arranged on an electric automobile, so that at least one receiving coil in the plurality of receiving coils can realize full-power receiving according to the specific laying condition of a transmitting coil in the dynamic wireless charging system, thereby reducing the fluctuation of the charging power of a vehicle-mounted battery, avoiding the continuous high-frequency charging and discharging of the vehicle-mounted battery, and further prolonging the service life of the vehicle-mounted battery.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a dynamic wireless charging receiving circuit according to the present invention.
This wireless receiving circuit that charges of developments includes: the anti-reverse circuit comprises N receiving coils L, N, capacitors C, N synchronous rectification circuits 1, N anti-reverse circuits 2 for preventing reverse current flow and a DC/DC conversion circuit 3, wherein the N receiving coils L, N are arranged on an electric automobile, the N anti-reverse circuits are used for preventing reverse current flow, the N is an integer larger than 1, and the N is as follows:
the first end of an Nth receiving coil L is connected with the first input end of an Nth synchronous rectification circuit 1, the second end of the Nth receiving coil L is connected with the first end of an Nth capacitor C, the second end of the Nth capacitor C is connected with the second input end of the Nth synchronous rectification circuit 1, the output end of the Nth synchronous rectification circuit 1 is connected with the input end of an Nth anti-reverse circuit 2, the output end of the Nth anti-reverse circuit 2 is connected with the input end of a DC/DC conversion circuit 3, and the output end of the DC/DC conversion circuit 3 is connected with a vehicle-mounted battery of the electric vehicle; the N receiving coils L are sequentially arranged according to the driving direction of the electric automobile under the condition that at least one receiving coil L realizes full-power receiving;
the synchronous rectification circuit 1 is used for converting input alternating current into direct current, so that the DC/DC conversion circuit 3 converts the direct current into voltage to meet the charging requirement of the vehicle-mounted battery.
Specifically, the dynamic wireless charging system includes a dynamic wireless charging transmitting circuit (disposed on a charging path of the dynamic wireless charging system) and a dynamic wireless charging receiving circuit (disposed on the electric vehicle), wherein the dynamic wireless charging transmitting circuit may adopt a circuit structure (LCCL topology) as shown in fig. 3; the dynamic wireless charging receiving circuit comprises a plurality of receiving coils L, a plurality of capacitors C, a plurality of synchronous rectification circuits 1, a plurality of anti-reverse circuits 2 and a DC/DC conversion circuit 3. The following explains the operation principle of the dynamic wireless charging system:
as can be seen from fig. 3, the circuit structure where any transmitting coil in the dynamic wireless charging transmitting circuit is located includes: the H-bridge inverter comprises an H-bridge inverter consisting of a first power tube K1, a second power tube K2, a third power tube K3 and a fourth power tube K4, an LCCL impedance matching circuit (impedance matching circuit for short, the no-load loss of the LCCL impedance matching circuit is low, and the LCCL impedance matching circuit is beneficial to pre-starting of a system) consisting of an inductor Lp, a first capacitor C1 and a second capacitor Cp, and a transmitting coil (transmitting power during operation).
In the dynamic wireless charging receiving circuit, a receiving coil L and a capacitor C form a resonance circuit, so that the receiving coil L can receive the power transmitted by the corresponding transmitting coil. After the receiving coil L receives the power transmitted by the corresponding transmitting coil, it will have an alternating current passing through itself. The ac power in the receiving coil L flows into the synchronous rectification circuit 1, so that the synchronous rectification circuit 1 converts the input ac power into dc power.
Considering that the power of the transmitting coil received by each receiving coil L may be different, and the magnitude of the direct current converted by the synchronous rectification circuit 1 corresponding to the receiving coil L receiving different power is also different, in order to prevent the current from flowing from the output end of the synchronous rectification circuit 1 with a higher output voltage to the output end of the synchronous rectification circuit 1 with a lower output voltage (which is used as an inverter circuit at this time), the present application adds a reverse prevention circuit 2 for preventing the current from flowing reversely to the output end of each synchronous rectification circuit 1, so that the direct current converted by each synchronous rectification circuit 1 is output to the DC/DC conversion circuit 3 through the reverse prevention circuit 2 (it should be noted that the output ends of the reverse prevention circuits 2 are connected in parallel and are connected to the input end of the DC/DC conversion circuit 3 together). The DC/DC conversion circuit 3 can perform voltage conversion on the input direct current according to the charging requirement of the vehicle-mounted battery of the electric vehicle, thereby satisfying the charging requirement of the vehicle-mounted battery.
It can be understood that the installation direction of the receiving coil L is the same as that of the transmitting coil, and the receiving coil L and the transmitting coil L are all sequentially arranged according to the driving direction of the electric vehicle. Moreover, in order to reduce the fluctuation of the charging power of the vehicle-mounted battery, when a plurality of receiving coils L are arranged, at least one receiving coil L can realize full-power receiving according to the specific laying condition of the transmitting coils (the length of one transmitting coil and the interval length of the adjacent transmitting coils), so that the fluctuation of the charging power of the vehicle-mounted battery is reduced, the continuous high-frequency charging and discharging of the vehicle-mounted battery are avoided, and the service life of the vehicle-mounted battery is prolonged compared with the arrangement of a single receiving coil.
In addition, in order to improve the uniformity of the magnetic field intensity at the receiving end of the dynamic wireless charging system during actual installation, a certain distance should be maintained between adjacent receiving coils L. Then, according to the structural circuit of the dynamic wireless charging system (the coupling between the adjacent receiving coils L is ignored), the output voltage of the synchronous rectification circuit 1 can be obtained as follows:
where M is the mutual inductance between the transmitter coil and the receiver coil L, UinFor transmitting the voltage, L, emitted by the coiltransIs the inductance of the transmitter coil. From the relation, the output voltage of the synchronous rectification circuit 1 is irrelevant to the load, so that the dependence on the real-time performance of communication between the receiving end and the transmitting end is reduced, and the charging requirement of the vehicle-mounted battery can be completely met through the subsequent DC/DC conversion circuit 3.
The invention provides a dynamic wireless charging receiving circuit, which comprises N receiving coils, N capacitors, N synchronous rectifying circuits, N anti-reverse circuits for preventing reverse current flow and a DC/DC conversion circuit, wherein the N receiving coils, the N capacitors, the N synchronous rectifying circuits, the N anti-reverse circuits and the DC/DC conversion circuit are arranged on an electric automobile, and the dynamic wireless charging receiving circuit comprises: the first end of the Nth receiving coil is connected with the first input end of the Nth synchronous rectification circuit, the second end of the Nth receiving coil is connected with the first end of the Nth capacitor, the second end of the Nth capacitor is connected with the second input end of the Nth synchronous rectification circuit, the output end of the Nth synchronous rectification circuit is connected with the input end of the Nth anti-reverse circuit, the output end of the Nth anti-reverse circuit is connected with the input end of the DC/DC conversion circuit, and the output end of the DC/DC conversion circuit is connected with a vehicle-mounted battery of the electric vehicle; the N receiving coils are sequentially arranged according to the driving direction of the electric automobile under the condition that at least one receiving coil realizes full-power receiving; the synchronous rectification circuit is used for converting input alternating current into direct current so that the direct current can be subjected to voltage conversion by the DC/DC conversion circuit to meet the charging requirement of the vehicle-mounted battery.
Therefore, the plurality of receiving coils are arranged on the electric automobile, so that at least one receiving coil in the plurality of receiving coils can receive full power according to the specific laying condition of the transmitting coil in the dynamic wireless charging system, the fluctuation of the charging power of the vehicle-mounted battery is reduced, the continuous high-frequency charging and discharging of the vehicle-mounted battery are avoided, and the service life of the vehicle-mounted battery is prolonged.
On the basis of the above-described embodiment:
as an alternative embodiment, the reverse blocking circuit 2 includes a diode, in which:
the anode of the diode is used as the input end of the anti-reverse circuit 2, and the cathode of the diode is used as the output end of the anti-reverse circuit 2.
Specifically, the reverse preventing circuit 2 of the present application may select a diode for conducting current in one direction (allowing current to flow only from the anode to the cathode) so as to prevent current from flowing from the output terminal of a synchronous rectification circuit 1 of a higher output voltage to the output terminal of a synchronous rectification circuit 1 of a lower output voltage.
As an alternative embodiment, the N receiving coils L are arranged in a straight line.
Specifically, referring to fig. 4, fig. 4 is a schematic diagram illustrating an arrangement of a transmitting coil and a receiving coil in a dynamic wireless charging system according to the present invention. In general, a plurality of transmitting coils are disposed on the same straight line on a straight charging path of a dynamic wireless charging system. Similarly, in the present invention, the plurality of receiving coils L are arranged on the same straight line, and the receiving coils L are sequentially arranged in the traveling direction of the electric vehicle, so that the distances between the receiving coils L arranged on the same straight line and the charging ground are the same, and power transmission is more stable.
As an alternative embodiment, the number of the receiving coils L is 2.
Specifically, this application can only set up 2 receiving coil L on electric automobile, and is corresponding, and electric capacity C, synchronous rectifier circuit 1 and prevent that the number of anti-reverse circuit 2 is 2 to dynamic wireless charging receiving circuit's cost has been practiced thrift.
As an alternative embodiment, the spacing length between adjacent transmitting coils in the dynamic wireless charging system < the length of the single receiving coil L < the length of the single transmitting coil.
Specifically, the length of the single receiving coil L can be selected to be larger than the interval length between adjacent transmitting coils and smaller than the length of the single transmitting coil. This is not particularly limited by the present application as long as it is ensured that at least one receiving coil L achieves full power reception.
The invention also provides a dynamic wireless charging system which comprises a dynamic wireless charging transmitting circuit and any one of the dynamic wireless charging receiving circuits.
As an optional embodiment, the circuit structure of the dynamic wireless charging transmitting circuit is specifically an LCCL topology.
For introduction of the dynamic wireless charging system provided by the present invention, reference is made to the above-mentioned embodiment of the dynamic wireless charging receiving circuit, and the description of the present invention is omitted here for brevity.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. The utility model provides a developments wireless receiving circuit that charges which characterized in that, is including locating N receiving coil, N electric capacity, N synchronous rectifier circuit, N be used for preventing that electric current reverse flow's anti-reverse circuit and DC/DC converting circuit on the electric automobile, N is for being greater than 1 integer, wherein:
the first end of the Nth receiving coil is connected with the first input end of the Nth synchronous rectification circuit, the second end of the Nth receiving coil is connected with the first end of the Nth capacitor, the second end of the Nth capacitor is connected with the second input end of the Nth synchronous rectification circuit, the output end of the Nth synchronous rectification circuit is connected with the input end of the Nth anti-reverse circuit, the output end of the Nth anti-reverse circuit is connected with the input end of the DC/DC conversion circuit, and the output end of the DC/DC conversion circuit is connected with a vehicle-mounted battery of the electric vehicle; the N receiving coils are sequentially arranged according to the driving direction of the electric automobile under the condition that at least one receiving coil realizes full-power receiving;
the synchronous rectification circuit is used for converting input alternating current into direct current, so that the direct current is subjected to voltage conversion by the DC/DC conversion circuit to meet the charging requirement of the vehicle-mounted battery.
2. The dynamic wireless charging receiving circuit of claim 1, wherein the kickback prevention circuit comprises a diode, wherein:
the anode of the diode is used as the input end of the anti-reverse circuit, and the cathode of the diode is used as the output end of the anti-reverse circuit.
3. The dynamic wireless charging receiver circuit of claim 1, wherein N of the receiver coils are arranged in a straight line.
4. The dynamic wireless charging receiver circuit of claim 3, wherein the number of receiver coils is 2.
5. The dynamic wireless charging receiver circuit according to any of claims 1-4, wherein the spacing between adjacent transmitter coils in a dynamic wireless charging system is less than the length of a single said receiver coil less than the length of a single said transmitter coil.
6. A dynamic wireless charging system, comprising a dynamic wireless charging transmitting circuit, and further comprising a dynamic wireless charging receiving circuit according to any one of claims 1-5.
7. The dynamic wireless charging system of claim 6, wherein the circuit structure of the dynamic wireless charging transmit circuit is embodied as an LCCL topology.
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| CN2019100583898 | 2019-01-22 | ||
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| WO2021092870A1 (en) * | 2019-11-14 | 2021-05-20 | Oppo广东移动通信有限公司 | Electronic device, and wireless charging apparatus, system and method |
| CN112803560A (en) * | 2019-11-14 | 2021-05-14 | Oppo广东移动通信有限公司 | Wireless charging device, equipment to be charged, charging system and method and storage medium |
| EP4024663A4 (en) * | 2019-11-14 | 2022-11-09 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless charging apparatus, device to be charged, charging system and method, and storage medium |
| CN110913534A (en) * | 2019-12-31 | 2020-03-24 | 佛山市利升光电有限公司 | LED lamp and power supply circuit thereof |
| CN110996445A (en) * | 2019-12-31 | 2020-04-10 | 佛山市利升光电有限公司 | LED lamp circuit structure |
| CN113054753A (en) * | 2020-05-14 | 2021-06-29 | 荣耀终端有限公司 | Wireless charging equipment and equipment to be charged |
| CN114498783A (en) * | 2020-10-26 | 2022-05-13 | 北京小米移动软件有限公司 | Wireless charging control method, device, equipment and storage medium |
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| WO2013122703A1 (en) * | 2012-02-14 | 2013-08-22 | Ut-Battelle, Llc | Wireless power charging using point of load controlled high frequency power converters |
| JP6515015B2 (en) * | 2015-11-11 | 2019-05-15 | 株式会社ダイヘン | Contactless power transmission system |
| CN206948039U (en) * | 2017-06-06 | 2018-01-30 | 湖南工业大学 | Single-shot is penetrated to four receiving coil electric automobile static state wireless power supplies |
| CN108891269B (en) * | 2018-05-22 | 2021-10-22 | 广西电网有限责任公司电力科学研究院 | Wireless electric energy receiving device and wireless charging automobile |
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Effective date of registration: 20210308 Address after: 518000 room 133-134, No.1 International Students (Longgang) Pioneer Park, Longcheng street, Longgang District, Shenzhen City, Guangdong Province Applicant after: ZONECHARGE (SHENZHEN) WIRELESS POWER SUPPLY TECHNOLOGY Co.,Ltd. Address before: No.9, Puchang Road, Laishan District, Yantai City, Shandong Province Applicant before: ZHONG HUI POWERISE WIRELESS POWER TECHNOLOGY Ltd. |
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