WO2014166204A1 - 无线充电装置和方法 - Google Patents
无线充电装置和方法 Download PDFInfo
- Publication number
- WO2014166204A1 WO2014166204A1 PCT/CN2013/083376 CN2013083376W WO2014166204A1 WO 2014166204 A1 WO2014166204 A1 WO 2014166204A1 CN 2013083376 W CN2013083376 W CN 2013083376W WO 2014166204 A1 WO2014166204 A1 WO 2014166204A1
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- WO
- WIPO (PCT)
- Prior art keywords
- wireless charging
- matching circuit
- circuit
- dynamic
- control
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000005540 biological transmission Effects 0.000 claims description 12
- 239000003990 capacitor Substances 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 16
- 230000005674 electromagnetic induction Effects 0.000 description 12
- 230000006870 function Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 2
- 230000008520 organization Effects 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
-
- 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
-
- 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
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
Definitions
- the present invention relates to the field of mobile communications, and in particular, to a wireless charging apparatus and method.
- Electromagnetic induction technology is based on its advantages in terms of efficiency, cost, safety, etc. It is currently widely used in the field of consumer electronics.
- the existing products are basically wireless charging technologies based on electromagnetic induction technology.
- WPC International Wireless Power Consortium
- PMA Power Matters Alliance
- WPC Wireless Power Consortium
- Qi Electromagnetic induction technology has a history of 100 years. Because there is no contact point, it has high safety and reliability in harsh environments. In terms of technical specifications, the power supply distance is less than one centimeter, and the transmission end can transmit power to the receiving end.
- PMA Power Matters Alliance
- WPC and PMA are both wireless charging standards based on electromagnetic induction technology, but communication protocols, transmission The technical details of the transmission frequency and so on are different.
- WPC is widely used in Asia and Europe; PMA is being promoted on a large scale in North America.
- the present invention provides a wireless charging apparatus and method that solves the problem of wireless charging using different wireless charging standards.
- a wireless charging device includes a receiving coil, the receiving coil is connected with a dynamic matching circuit, the dynamic matching circuit includes a control circuit and at least one matching circuit; the control circuit is connected to the at least one matching circuit;
- the control circuit is configured to: transmit a control signal that controls the at least one matching circuit to be turned on and off.
- the matching circuit comprises the following types:
- the device further comprises a wireless charging receiving circuit
- the wireless charging receiving circuit is configured to: connect to a control circuit of the dynamic matching circuit through a control line;
- the wireless charging receiving circuit is configured to: send a control signal to the dynamic matching circuit through the control line to control the dynamic matching circuit to select a matching circuit from the at least one matching circuit to be turned on.
- control circuit is configured to: switch that switches between the at least one matching circuit, the matching circuit is turned on when the switch switches a matching circuit.
- control circuit is a tunable capacitor.
- the dynamic matching circuit includes at least two matching circuits.
- the invention also provides a wireless charging method, comprising:
- the wireless charging receiving circuit sends a control signal to the dynamic matching circuit, instructing the dynamic matching circuit to select a corresponding matching circuit from at least one matching circuit to be turned on; and the dynamic matching circuit switches the corresponding signal according to the control signal. Circuit, start charging.
- the method further includes:
- the wireless charging receiving circuit generates the control signal according to the handshake information.
- the dynamic matching circuit represents a high and low potential of the digital signal by changing the transmission frequency
- the digital signal carries the handshake information.
- the wireless charging receiving circuit generates the control signal according to the handshake information, including:
- the wireless charging receiving circuit determines a wireless charging standard corresponding to the received handshake information, and determines a type of matching circuit required;
- the wireless charging receiving circuit generates the control signal, and a matching circuit selected by the control circuit is indicated in the control signal.
- Embodiments of the present invention provide a wireless charging apparatus and method, wherein a receiving circuit of the wireless charging apparatus is connected with a dynamic matching circuit, the dynamic matching circuit includes a control circuit and at least one matching circuit; and the control circuit and the at least A matching circuit is connected, the control circuit is configured to transmit a control signal for controlling the at least one matching circuit to be turned on and off, and the dynamic matching circuit switches between matching circuits of different wireless charging standard types according to the control signal, and selects an appropriate matching.
- the circuit is switched on and used to realize a flexible wireless charging mechanism, which solves the problem of wireless charging using different wireless charging standards.
- FIG. 1 is a schematic structural view of a wireless charging device
- FIG. 2 is a block diagram showing the working principle of the wireless charging receiving terminal
- FIG. 3 is a schematic structural diagram of a wireless charging apparatus according to Embodiment 1 of the present invention
- 4 is a schematic structural view of a dynamic matching circuit of a switch type control circuit
- FIG. 5 is a schematic structural diagram of a dynamic matching circuit of a control circuit in the form of a tunable capacitor
- FIG. 6 is a flowchart of a wireless charging method according to Embodiment 2 of the present invention. Preferred embodiment of the invention
- the wireless charging technology represented by electromagnetic induction is the current mainstream wireless charging technology. Both WPC and PMA use electromagnetic induction technology.
- the basic structure is shown in Figure 1. One is the transmitting end, and the other is the receiving terminal. The electrical energy is exchanged between the terminal and the receiving terminal through the induction coil.
- the block diagram of the receiving terminal is shown in Figure 2.
- the receiving coil receives the power and transmits it to the receiving circuit.
- the front end of the receiving circuit has a matching circuit. By adjusting the matching circuit, the receiving circuit is in an optimal receiving state, and the transmission efficiency is maximized.
- the receiving circuit completes the functions of rectifying voltage regulation and the like, and outputs a stable DC power source used for charging the mobile phone terminal.
- the matching circuit is very important.
- the receiving efficiency of the wireless charging can reach the maximum value only by adjusting the matching so that the receiving circuit is in an optimal working state.
- the matching circuit is different.
- the transmission frequency is different, and the matching circuit is different.
- WPC and PMA are currently available in different regions. WPC is used more in Asia and Europe; PMA is more widely promoted in North America. Currently, there is a demand for compatibility between WPC and PMA, and it is compatible with both WPC and PMA on the same terminal.
- WPC is the mainstay
- PMA is the auxiliary
- WPC matching circuit is used, WPC is in the optimal working state, PMA is inefficient
- PMA is the main
- WPC is the auxiliary
- PMA matching circuit is used, PMA is the most Excellent working condition, WPC is inefficient.
- embodiments of the present invention provide a wireless charging apparatus and method.
- the embodiment of the invention provides a wireless charging device, which has the structure shown in FIG. 3, and includes: a coil, a dynamic matching circuit, and a wireless charging receiving circuit.
- the dynamic matching circuit includes a control circuit and at least one matching circuit; the control circuit is connected to the at least one matching circuit;
- the control circuit is configured to transmit a control signal that controls switching of the at least one matching circuit.
- the matching circuit comprises the following types:
- the device further comprises a wireless charging receiving circuit
- the wireless charging receiving circuit is connected to the control circuit of the dynamic matching circuit through a control line; the wireless charging receiving circuit sends a control signal to the dynamic matching circuit through the control line to control the dynamic matching circuit from the Selecting a matching circuit from at least one of the matching circuits is turned on.
- the dynamic matching circuit comprises at least two matching circuits.
- the receiving coil is both a wireless charging energy receiving carrier and a channel for information transmission during wireless charging; the dynamic matching circuit module realizes dynamic adjustment of the matching circuit under different standards of WPC or PMA, and uses WPC matching in WPC mode, in PMA mode. PMUse PMA matching to make wireless charging the most efficient. Current wireless charging receiving circuits are simple to process and do not require the addition of additional entities.
- the wireless charging receiving circuit module processes the information sent by the receiving coil, determines whether the current mode is in the WPC mode or the PMA mode according to the received information, controls the dynamic matching circuit module according to the determination result, adjusts the matching circuit, and receives the wireless energy. After the processing is completed, a stable DC voltage is output for charging the mobile terminal.
- the control circuit is specifically a switch that can be switched between the at least one matching circuit, and the matching circuit is turned on when the switch switches a matching circuit.
- the control circuit is specifically a switch that can be switched between the at least one matching circuit, and the matching circuit is turned on when the switch switches a matching circuit.
- you can switch between different matching channels through the switch in WPC In the mode, the switch is switched to the A channel, and the A match is called; in the PMA mode, the switch is switched to the B channel, and the B match is called.
- the control circuit can also be a tunable capacitor. As shown in FIG. 5, through the adjustable capacitor, the tunable capacitor is controlled and adjusted by the wireless charging receiving circuit in different modes, so that the matching circuit is optimal.
- Embodiments of the present invention provide a wireless charging method.
- the following is an example in which the dynamic matching circuit has a WPC matching circuit and a PMA matching circuit as an example.
- the flow of the first embodiment of the present invention is as shown in FIG. 6, and includes:
- Step 601 The receiving coil sends the received handshake information to the wireless charging receiving circuit via the dynamic matching circuit.
- the dynamic matching circuit represents a high and low potential of the digital signal by a change of the transmission frequency, and the digital signal carries The handshake information.
- Step 602 The wireless charging receiving circuit generates the control signal according to the handshake information.
- WPC and PMA are two different wireless charging standards.
- the operating frequencies of the two are different.
- the communication content between the transmitting end and the receiving end is different.
- the wireless charging receiving circuit module can determine the current charging environment according to the difference between WPC and PMA. Whether it is WPC mode or PMA mode.
- the wireless charging receiving circuit determines the charging mode corresponding to the received handshake information (i.e., the wireless charging standard used), and then generates the control signal according to the determined charging mode.
- the wireless charging receiving circuit When the wireless charging receiving circuit recognizes the WPC mode, the wireless charging receiving circuit controls the dynamic matching circuit so that the WPC wireless charging is in an optimal working state to realize high-efficiency WPC wireless charging transmission; when the wireless charging receiving circuit recognizes the PMA mode The wireless charging receiving circuit controls the dynamic matching circuit, so that the PMA wireless charging is in an optimal working state to realize high-efficiency PMA wireless charging transmission.
- Step 603 The wireless charging receiving circuit sends a control signal to the dynamic matching circuit, instructing the dynamic matching circuit to select a corresponding matching circuit from at least one matching circuit to be turned on; In this step, the matching circuit type to which the electromagnetic wave received by the receiving coil is applied is indicated in the control signal.
- Step 604 The dynamic matching circuit switches the corresponding circuit according to the control signal to start charging.
- the technical solution provided by the embodiments of the present invention can also be extended to other similar electromagnetic induction wireless charging technologies, and can be compatible with coexistence of wireless charging technologies other than WPC and ⁇ mentioned herein to achieve high efficiency wireless charging.
- all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve.
- the invention is not limited to any particular combination of hardware and software.
- the various devices/function modules/functional units in the above embodiments may be implemented using a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
- Each device/function module/functional unit in the above embodiments can be stored in a computer readable storage medium when implemented in the form of a software function module and sold or used as a standalone product.
- the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
- Embodiments of the present invention provide a wireless charging apparatus and method, the receiving coil of the wireless charging apparatus is connected with a dynamic matching circuit, the dynamic matching circuit includes a control circuit and at least one matching circuit; the control circuit and the At least one matching circuit is connected, the control circuit is configured to transmit a control signal for controlling the switching of the at least one matching circuit, and the dynamic matching circuit switches between matching circuits of different wireless charging standard types according to the control signal, and selects an appropriate one.
- the matching circuit is switched on and used to realize a flexible wireless charging mechanism, which solves the problem of wireless charging using different wireless charging standards.
- Wireless charging can be achieved through dynamic matching circuit. It can efficiently transmit wireless charging under both WPC standard and PMA standard. It is compatible with WPC and PMA standards on the same mobile phone terminal. It effectively solves the problem of coexistence compatibility between WPC and PMA, enabling efficient wireless charging in both WPC and PMA modes.
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Power Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US14/906,270 US9893558B2 (en) | 2013-07-24 | 2013-09-12 | Wireless charging device and method |
EP13881848.9A EP3012940A4 (en) | 2013-07-24 | 2013-09-12 | VEHICLE LOADING DEVICE AND METHOD |
JP2016528293A JP2016527859A (ja) | 2013-07-24 | 2013-09-12 | ワイヤレス充電装置及び方法 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310314538.5A CN104348236B (zh) | 2013-07-24 | 2013-07-24 | 无线充电装置和方法 |
CN201310314538.5 | 2013-07-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014166204A1 true WO2014166204A1 (zh) | 2014-10-16 |
Family
ID=51688904
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2013/083376 WO2014166204A1 (zh) | 2013-07-24 | 2013-09-12 | 无线充电装置和方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US9893558B2 (zh) |
EP (1) | EP3012940A4 (zh) |
JP (1) | JP2016527859A (zh) |
CN (1) | CN104348236B (zh) |
WO (1) | WO2014166204A1 (zh) |
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CN106033975A (zh) * | 2015-03-17 | 2016-10-19 | 联想(北京)有限公司 | 一种电子设备及其控制方法 |
CN105391185A (zh) * | 2015-07-14 | 2016-03-09 | 苏州华昌机电有限公司 | 无线充电器 |
US9985442B2 (en) * | 2015-09-24 | 2018-05-29 | Qualcomm Incorporated | Wireless power transfer receiver having closed loop voltage control |
KR101754357B1 (ko) * | 2015-12-08 | 2017-07-07 | 주식회사 맵스 | 전력 수신장치의 무선전력 전송 표준 선택기 및 그 방법 |
CN105406888B (zh) * | 2015-12-21 | 2019-02-26 | 捷德(中国)信息科技有限公司 | 一种调整手机天线工作频率的方法 |
CN107979184A (zh) * | 2016-10-24 | 2018-05-01 | 李耀庭 | 无线充电转换装置 |
CN106410992B (zh) * | 2016-10-31 | 2020-01-14 | 深圳迪限科技有限公司 | 无线充电设备及方法 |
CN106451648A (zh) * | 2016-10-31 | 2017-02-22 | 努比亚技术有限公司 | 无线充电设备及方法 |
CN109818426B (zh) * | 2017-11-20 | 2022-08-16 | 鹏鼎控股(深圳)股份有限公司 | 无线充电装置及其制作方法 |
CN109904884B (zh) * | 2017-12-07 | 2023-10-17 | 中兴通讯股份有限公司 | 无线充电方法、装置、终端、存储介质及电子装置 |
AU2018424390B2 (en) * | 2018-05-25 | 2021-09-23 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Wireless charging receiving device and mobile terminal |
CN110797927B (zh) * | 2018-08-02 | 2022-04-01 | Oppo广东移动通信有限公司 | 无线充电控制方法及充电设备 |
US20220368160A1 (en) * | 2019-09-26 | 2022-11-17 | The University Of Hong Kong | A wireless battery charging system and method for battery charging and handshaking |
CN112450974A (zh) * | 2020-11-20 | 2021-03-09 | 聚融医疗科技(杭州)有限公司 | 一种带无线充电器的台式超声诊断系统 |
TWI783372B (zh) * | 2021-02-08 | 2022-11-11 | 鄭佳吟 | 具有鑲崁功能的無線充電裝置 |
WO2022193965A1 (zh) * | 2021-03-18 | 2022-09-22 | 浙江铅锂智行科技有限公司 | 一种电动车 |
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- 2013-09-12 US US14/906,270 patent/US9893558B2/en active Active
- 2013-09-12 WO PCT/CN2013/083376 patent/WO2014166204A1/zh active Application Filing
- 2013-09-12 EP EP13881848.9A patent/EP3012940A4/en not_active Withdrawn
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Also Published As
Publication number | Publication date |
---|---|
EP3012940A1 (en) | 2016-04-27 |
CN104348236B (zh) | 2019-01-25 |
CN104348236A (zh) | 2015-02-11 |
US20160164334A1 (en) | 2016-06-09 |
EP3012940A4 (en) | 2016-07-27 |
JP2016527859A (ja) | 2016-09-08 |
US9893558B2 (en) | 2018-02-13 |
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