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1. 发明授权

US11424647B2 Foreign object detection in a wireless power transfer system 有权
公开(公告)号：US11424647B2
公开(公告)日：2022-08-23
申请号：US17319411
申请日：2021-05-13
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen , Wilhelmus Gerardus Maria Ettes , Eddy Gerrit Veltman , Antonius Adriaan Maria Staring , Richard Henricus Maria Theelen , Johannes Gerardus Fredericus Kablau
IPC分类号： H02J50/60 , H02J50/12
摘要： A power transmitter (101) for a wireless power transfer system comprises a transmitter coil (103) and a driver (201) generates a drive signal for the transmitter coil (103) employing a repeating time frame with a power transfer time interval and a foreign object detection time interval. A test generator (211) generates a test drive signal for a test coil (209) during the foreign object detection time interval. A foreign object detector (207) performs a foreign object detection test based on a measured parameter for the test drive signal. Prior to entering a power transfer phase, an adapter (213) controls the power transmitter (101) to operate in a foreign object detection initialization mode in which a preferred value of a signal parameter for the test drive signal is determined in response to at least a first message received from the power receiver (105). During the foreign object detection time interval the signal parameter of is set to the preferred value.

2. 发明授权

US11165285B2 Power transmitter and power receiver for an inductive power system 有权
公开(公告)号：US11165285B2
公开(公告)日：2021-11-02
申请号：US16389145
申请日：2019-04-19
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen
IPC分类号： H02J50/80 , H02J50/10 , H02J7/02 , H04B5/00
摘要： A wireless inductive power transfer system comprises a power transmitter for transmitting power inductively to a power receiver via transmitter coil 11 to receiver coil 21. In the system, a communication method comprises a step 37 of transmitting, by the power receiver, first data and second data to the power transmitter, the first data indicating a modulation requirement, and the second data indicating an inquiry message; a step 32 for receiving, by the power transmitter, the first data and the second data from the power receiver; a step 34 for transmitting, by the power transmitter, a response message for responding to said inquiry message, by modulating a power signal according to said modulation requirement so as to carry the response message; and a step 35 for receiving the response message by the power receiver by demodulating the modulated power signal carrying the response message received via the receiver coil from the power transmitter.

3. 发明授权

US10897154B2 Inductive wireless power transfer with synchronized power measurement 有权
公开(公告)号：US10897154B2
公开(公告)日：2021-01-19
申请号：US15745722
申请日：2016-07-14
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen , Antonius Adriaan Maria Staring
IPC分类号： H02J50/10 , H02J50/40 , H02J50/80 , H02J50/60 , H02J7/02 , H02J50/12 , H02J7/00
摘要： An inductive wireless power transmitter is presented for transmitting an inductive wireless power signal to at least two inductive wireless power receivers. The power transmitter coordinates communication with the power receivers in time slots. It allocates a measurement time slot for synchronised power measurement by the power transmitter and the power receivers. During the measurement time slot the power transmitter measures the amount of power it transmits. After the end of the measurement time slot it receives from the power receivers the measured amounts of power received. From the measured power transmitted and power received, it determines an amount of power lost. If the amount of power lost exceeds a threshold value, it reduces the power of the inductive wireless power signal.

4. 发明授权

US10855109B2 Wireless inductive power transfer 有权
公开(公告)号：US10855109B2
公开(公告)日：2020-12-01
申请号：US16019609
申请日：2018-06-27
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen , Laurens Henricus Swaans
IPC分类号： H02J50/10 , H02J50/80 , H04B5/00 , H02J7/00
摘要： An inductive power transfer system is arranged to transfer power from a power transmitter to a power receiver via a wireless power signal. The system supports communication from the power transmitter to the power receiver based on load modulation of the power signal. The power receiver transmitting a first message to the power transmitter which comprises a standby power signal requirement for the power signal during a standby phase. The power transmitter receives the message, and when the system enters the standby phase, the power transmitter provides the power signal in accordance with the standby power signal requirement during. A power receiver configurable standby phase is provided which may for example allow devices to maintain battery charge or to provide fast initialization of the power transfer phase.

5. 发明授权

US10778048B2 Wireless inductive power transfer 有权
公开(公告)号：US10778048B2
公开(公告)日：2020-09-15
申请号：US16160476
申请日：2018-10-15
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen , Antonius Adriaan Maria Staring
IPC分类号： H02J50/60 , H02J50/10 , H02J50/90 , H02J50/12
摘要： A wireless power transfer system includes a power transmitter (101) providing power to a power receiver (105) via an inductive power signal. The power transmitter (101) and receiver (105) can operate in different modes including a test mode and a power transfer mode. Operating parameters of the power receiver (105) are constrained in the test mode relative (and specifically the loading). A foreign object detector (209) generates a foreign object detection estimate from a comparison of a measured load to an expected load of the inductive power signal when the power receiver is operating in the test mode. A controller (211) enters the power transmitter (101) and receiver (103) into the power transfer mode when the foreign object detection estimate is indicative of no detection of a foreign object. In the power transfer mode, a parasitic power loss detector (207) generates a parasitic power loss detection for the power transfer if a parasitic power loss estimate is outside a range.

6. 发明授权

US10396595B2 Inductive wireless power transfer with time slotted communication 有权
公开(公告)号：US10396595B2
公开(公告)日：2019-08-27
申请号：US15560259
申请日：2016-04-08
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen , Antonius Adriaan Maria Staring
IPC分类号： H04B5/00 , H02J50/10 , H02J7/02 , H02J50/40 , H02J50/80
摘要： A method is presented of allocating communication time slots contained in repeating frames for communication between an inductive wireless power transmitter and at least two inductive wireless power receivers, wherein the power transmitter and the power receivers are arranged to communicate by means of modulation and demodulation of an inductive power signal. The transmitter sends synchronization messages marking the start of the communication time slots and the frames, and messages indicating if a time slot is unallocated. A receiver may send, during an unallocated time slot, send a message to the transmitter requesting allocation of the unallocated communication time slot. The transmitter subsequently sends messages to indicate if the communication was successfully received, and if the allocation request is granted.

7. 发明授权

US09479013B2 Wireless inductive power transfer 有权
标题翻译：无线感应电力传输
公开(公告)号：US09479013B2
公开(公告)日：2016-10-25
申请号：US14432574
申请日：2014-08-06
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Neil Francis Joye , Andries Van Wageningen , Wilhelmus Gerardus Maria Ettes
IPC分类号： H01F27/42 , H01F37/00 , H01F38/00 , H02J5/00 , H04B5/00 , H02J7/02 , H01F38/14
CPC分类号： H02J50/60 , H01F38/14 , H02J5/005 , H02J7/025 , H02J17/00 , H02J50/10 , H04B5/0031 , H04B5/0037 , H04B5/0075
摘要： A wireless power transfer system includes a power receiver (105) and a power transmitter (101) generating a wireless inductive power transfer signal for powering the power receiver (105) during a power transfer phase. An apparatus, often the power transmitter (101) comprises a first communication unit (305) communicating with a second communication unit of an entity using an electromagnetic communication signal. The entity may typically be the power receiver (105). The apparatus comprises a reference processor (307) for measuring and storing a reference value of a characteristic of the communication signal and a measurement unit (309) which repeatedly during the power transfer phase determines a measured value of the characteristic. A comparator (311) compares the measured values to the reference value and an initiator (313) triggers an entity detection process if the comparison indicates that a measured value and the reference value do not meet a similarity criterion. The entity detection process detect a presence of another entity.
摘要翻译：无线电力传输系统包括电力接收器（105）和功率发射器（101），功率发射器（101）在功率传输阶段期间产生用于为功率接收器（105）供电的无线感应功率传输信号。一种装置，通常功率发射器（101）包括与使用电磁通信信号的实体的第二通信单元通信的第一通信单元（305）。实体通常可以是电力接收器（105）。该装置包括用于测量和存储通信信号的特性的参考值的参考处理器（307）和在功率传送阶段期间重复地确定特性的测量值的测量单元（309）。比较器（311）将测量值与参考值进行比较，并且如果比较指示测量值和参考值不符合相似性标准，则启动器（313）触发实体检测处理。实体检测过程检测另一个实体的存在。

8. 发明申请

US20150263532A1 WIRELESS INDUCTIVE POWER TRANSFER 有权
标题翻译：无线电力传输
公开(公告)号：US20150263532A1
公开(公告)日：2015-09-17
申请号：US14435177
申请日：2013-09-13
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen
IPC分类号： H02J5/00 , G01R21/06 , H02J17/00
CPC分类号： H02J50/10 , G01R21/06 , H02J5/005 , H02J7/025 , H02J7/045 , H02J17/00 , H02J50/60 , H02J50/80
摘要： A power transmitter (101) transfers power to a power receiver (105) using a wireless power signal. The power transmitter (101) comprises an inductor (103) driven by a power signal generator (201) to provide the power signal. A calibration controller (211) determines whether a power loss calibration has been performed for the power transmitter (101) and power receiver (105) pairing. The calibration adapts an expected relationship between a received power indication provided by the power receiver (105) and a transmitted power indication for the power transmitter (101). A power limiter (205) restricts the power provided to the inductor to not exceed a threshold unless a power loss calibration has been performed for the pairing. The expected relationship may be used to detect unaccounted for power losses, e.g. due to foreign objects being present. The calibrated expected relationship may provide improved accuracy allowing accurate detection at higher power levels. At lower power levels such accuracy is not needed, and no calibration needs to be performed.
摘要翻译：电力发送器（101）使用无线电力信号将电力传送到电力接收器（105）。功率发射器（101）包括由功率信号发生器（201）驱动以提供功率信号的电感器（103）。校准控制器（211）确定是否已经对功率发射器（101）和电力接收器（105）配对执行功率损耗校准。校准适应由电力接收器（105）提供的接收功率指示与功率发射器（101）的发射功率指示之间的预期关系。功率限制器（205）限制提供给电感器的功率不超过阈值，除非已经对配对进行了功率损耗校准。预期的关系可以用于检测未计算的功率损耗，例如由于异物存在。校准的预期关系可以提供改进的准确度，允许在较高功率水平下的精确检测。在较低的功率水平下，不需要这样的精度，并且不需要进行校准。

9. 发明授权

US11190059B2 Controlling power in a wireless power transfer system 有权
公开(公告)号：US11190059B2
公开(公告)日：2021-11-30
申请号：US16958858
申请日：2019-01-02
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen , Antonius Adraan Maria Staring
IPC分类号： H02J50/80 , H02J50/10
摘要： The power transmitter (101) providing power to a power receiver (105) comprises a communicator (309) communicating with the power receiver (105) and a negotiator (305) negotiating a guaranteed power level with the power receiver (105) prior to a power transfer phase. The guaranteed power level is a minimum power level guaranteed by the power transmitter (101) throughout the power transfer phase. During the power transfer phase, a determiner (307) dynamically determines an available power level based on the prevailing operating parameters. The available power level is one that can currently be provided but is not guaranteed. The power controller (309) is arranged to, during the power transfer phase, increase the power level above the guaranteed minimum level in response to power control messages, and to reduce the power level regardless of the power control messages in response to a detection that the power level exceeds the available power level.

10. 发明授权

US10263469B2 Wireless inductive power transfer 有权
公开(公告)号：US10263469B2
公开(公告)日：2019-04-16
申请号：US14890785
申请日：2014-05-23
申请人： KONINKLIJKE PHILIPS N.V.
发明人： Andries Van Wageningen , Klaas Jacob Lulofs
IPC分类号： H02J50/00 , H02J50/12 , H02J50/40 , H02J50/80 , H02J5/00 , H02J7/02 , H04B5/00 , H02J50/10 , H02J7/00
摘要： A power transmitter (101) is arranged to transfer power to a power receiver (105) via a wireless inductive power transfer signal transmitted from a transmit coil (103) to a power receiver (105). A first communication unit (305) communicates a message to the power receiver (105) on a first communication link A second communication unit (307) receives data from the power receiver (105) on a separate second communication link having a longer range. The power receiver (105) comprises a third communication unit (405) which receives the first message. A response generator (407) generates a response message to the message and a fourth communication unit (409) transmits the response message to the power transmitter (103) over the second communication link. The power transmitter (103) determines an expected response message to the message and a power controller (303) controls the power level of the power transfer signal dependent on whether a message is received on the second communication link corresponding to the expected response message.

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