-
公开(公告)号：US20200052527A1
公开(公告)日：2020-02-13
申请号：US16346160
申请日：2017-11-06
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Wilhelmus Gerardus Maria ETTES , Antonius Adriaan Maria STARING , Lennaert Quirijn BRONTS , Eddy Gerrit VELTMAN , Andries VAN WAGENINGEN
Abstract: A power transmitter (501) for a wireless power transfer system includes a parallel resonance circuit (601) comprising at a transmitter coil (503) for generating the power transfer signal. A power source (605) has a current sink terminal and a power source terminal providing current to the parallel resonance circuit (601) with a limited rate of change of the current drawn. A first switch element (607) is coupled between a first end of the parallel resonance circuit (601) and the current sink terminal. A second switch element (609) is coupled between the other end and the current sink terminal. A driver (611) generates a cyclic drive signal such that each cycle comprises a two time intervals in which one switch element (607, 609) is closed and the other (607, 609) is open; and a third time interval in which both the first switch element (607) and the second switch element (609) are closed, the third time interval being between the other two intervals.
-
公开(公告)号：US20190334388A1
公开(公告)日：2019-10-31
申请号：US16465706
申请日：2017-11-24
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Andries VAN WAGENINGEN , Antonius Adriaan Maria STARING
Abstract: A wireless power transfer system includes a power receiver (105) comprising a coil (107) for extracting power from an electromagnetic signal generated by a power transmitter (101). A load controller (305, 309) disconnects a load (303) during a foreign object detection interval and a power controller (307, 311) transmits power control messages reflecting a difference between an induced signal level and a reference level. A message transmitter (307, 313) transmits a predetermined loading indication for the reference level to the power transmitter (101) indicating a predetermined amount of power being extracted from the electromagnetic signal by the power receiver (105) when the load is disconnected and the induced signal is at the reference level. The power transmitter adapts the power level of the electromagnetic signal in response to the power control messages and a foreign object detector (207) performs a foreign object detection in response to a comparison of the power level of the electromagnetic signal and the predetermined loading indication.
-
公开(公告)号：US20150303995A1
公开(公告)日：2015-10-22
申请号：US14441308
申请日：2013-11-26
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Antonius Adriaan Maria STARING , Andries VAN WAGENINGEN
Abstract: A power transmitter (101) is arranged to transfer power to a power receiver (105) using a wireless inductive power signal. The power transmitter (101) comprises a power signal generator (207) which drives an inductor (103) to provide the power signal to an inductor of the power receiver (105). A power loop control is employed by the power receiver (105) providing power control error messages to the power transmitter (101). The power transmitter (101) comprises a query message processor (209) which can detect a query message received from the power receiver (105) using load modulation of the power signal. A modification processor (211) is arranged to modify a response of the power loop controller to the power control error messages dependent on the query message. The power receiver (105) can detect the modifications to the operation of the power control and thus can interpret this as a response to the query message.
Abstract translation: 功率发射器（101）被布置成使用无线感应功率信号将功率传送到功率接收器（105）。 功率发射器（101）包括功率信号发生器（207），其驱动电感器（103）以向功率接收器（105）的电感器提供功率信号。 功率回路控制由功率接收器（105）采用，向功率发射器（101）提供功率控制误差消息。 功率发射器（101）包括查询消息处理器（209），该查询消息处理器可使用功率信号的负载调制来检测从功率接收器（105）接收的查询消息。 修改处理器（211）被布置成根据查询消息来修改功率回路控制器对功率控制错误消息的响应。 电力接收器（105）可以检测对功率控制的操作的修改，并且因此可以将其解释为对查询消息的响应。
-
公开(公告)号：US20210218282A1
公开(公告)日：2021-07-15
申请号：US17054862
申请日：2019-05-15
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Wilhelmus Gerardus Maria ETTES , Andries VAN WAGENINGEN
Abstract: A power receiver receives a wireless power transfer from a power transfer signal generated by a wireless power transmitter during a power transfer phase. The power transfer signal employing a repeating time frame during the power transfer phase where the frame comprises at least a power transfer time interval and a foreign object detection time interval. The power receiver comprises a synchronizer (311) which synchronizes a local time reference to the repeating time frame and a load controller (309) which disconnects a load (303) during at least part of the foreign object time detection time intervals during at least part of the power transfer phase. The timing of the disconnecting is dependent on the local time reference. A mode controller (313) switches between a first operational mode and a second operational mode for the power transfer time intervals in response to a reliability measure for the synchronization.
-
公开(公告)号：US20200328616A1
公开(公告)日：2020-10-15
申请号：US16097656
申请日：2017-05-02
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Andries VAN WAGENINGEN , Antonius Adriaan Maria STARING , Wilhelmus Gerardus Maria ETTES , Petrus Carolus Maria FRISSEN , Aditya MEHENDALE , Willem POTZE
Abstract: A wireless power transfer system includes a power receiver (105) receiving a power transfer from a power transmitter (101) via a wireless inductive power transfer signal. The power transmitter (101) comprises a transmit power coil (103) generating the power transfer signal. A test signal coil (209) coupled to a test signal generator (211) generates a magnetic test signal. A plurality of spatially distributed detection coils (213) is coupled to measurement unit (215) generating a set of measurement values reflecting signals induced in the detection coils (213) by the magnetic test signal. A processor (217) determines a measurement spatial distribution of the measurement value where the spatial distribution reflects positions of the detection coils (213). A foreign object detector (219) detects a presence of a foreign object in response to a comparison of the measurement spatial distribution to a reference spatial distribution. The foreign object detector (219) is arranged to determine the reference spatial distribution in response to data received from the power receiving device (105).
-
Patent Agency Ranking
公开(公告)号：US20190044383A1
公开(公告)日：2019-02-07
申请号：US16072199
申请日：2017-02-01
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Andries VAN WAGENINGEN
Abstract: An intermediate device for supporting a power transfer to an electromagnetic load (505) from a power transmitter (201) comprises a resonance circuit (507) including an inductor (801) and a capacitor (803) where the inductor (801) is arranged to couple to the power transmitter (201) through a first surface area (509) and to the electromagnetic load (505) through a second surface area (511). The resonance circuit (507) is arranged to 5 concentrate energy of the power transfer electromagnetic signal from the first surface area (509) towards the second surface area (511). The device further comprises a communicator (807) for exchanging messages with the power transmitter (201). The communicator (807) transmits a request message to the power transmitter (201) comprising a request for the power transmitter (201) to generate a measurement electromagnetic signal. A load indication 10 processor (813) determines a load indication indicative of a loading of the measurement electromagnetic signal and a detector (815) detects a presence of the electromagnetic load in response to the load indication.
-
公开(公告)号：US20180219416A1
公开(公告)日：2018-08-02
申请号：US15745722
申请日：2016-07-14
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Andries VAN WAGENINGEN , Antonius Adriaan Maria STARING
CPC classification number: H02J50/10 , H02J7/0029 , H02J7/025 , H02J50/12 , H02J50/40 , H02J50/60 , H02J50/80
Abstract: 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.
-
公开(公告)号：US20170170686A1
公开(公告)日：2017-06-15
申请号：US15125588
申请日：2015-03-20
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Andries VAN WAGENINGEN , Antonius Adriaan Maria STARING
CPC classification number: H02J50/40 , H02J5/005 , H02J7/025 , H02J17/00 , H02J50/10 , H02J50/60 , H02J50/80
Abstract: A wireless power transfer system includes a power transmitter (101) arranged to provide a power transfer to a plurality of power receivers (105, 109) via a wireless inductive power signal. T power transmitter (101) comprises a receiver (203) for receiving data messages, load modulated on the wireless inductive power signal and a broadcast transmitter (205) broadcasting on a broadcast communication channel. The power receivers (105) comprise a transmitter (505) for load modulating data message on the power signal. The power transmitter (101) comprises a communication controller (207) which broadcasts first indications indicative of the wireless inductive power signal being available for load modulation in a time interval. A first power receiver comprises a broadcast receiver (507) receiving first indications from the power transmitter (101) and a transmission controller (509) aligning transmissions of data messages with received first indications. The invention may improve communication for scenarios where one power transmitter simultaneously supports a plurality power receivers.
-
公开(公告)号：US20220029474A1
公开(公告)日：2022-01-27
申请号：US17227417
申请日：2021-04-12
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Antonius Adriaan Maria STARING , Andries VAN WAGENINGEN
Abstract: A power transmitter (101) of a wireless power transfer system comprises a resonance including a transmitter coil (103) for generating a power transfer signal for wirelessly transferring power to a power receiver (105). Further, a driver (1303) generates a drive signal for the resonance circuit (201) and a message receiver (1305) is arranged to receive messages from the power receiver (105). A power loop controller (1307) implements a power control loop by adapting the power of the drive signal in response to power control messages received from the power receiver (105). However, the regulation is subject to a constraint of at least one of a current or voltage of the resonance circuit and a power of the drive signal being below a maximum limit. Further, the power transmitter (101) comprises an adapter (1309) which adapts the maximum limit in response to a load indication indicative of a loading of the power transfer signal by the power receiver (105).
-
公开(公告)号：US20190027969A1
公开(公告)日：2019-01-24
申请号：US16068809
申请日：2017-01-05
Applicant: KONINKLIJKE PHILIPS N.V.
Inventor： Antonius Adriaan Maria STARING , Andries VAN WAGENINGEN
Abstract: A power transmitter (101) of a wireless power transfer system comprises a resonance including a transmitter coil (103) for generating a power transfer signal for wirelessly transferring power to a power receiver (105). Further, a driver (1303) generates a drive signal for the resonance circuit (201) and a message receiver (1305) is arranged to receive messages from the power receiver (105). A power loop controller (1307) implements a power control loop by adapting the power of the drive signal in response to power control messages received from the power receiver (105). However, the regulation is subject to a constraint of at least one of a current or voltage of the resonance circuit and a power of the drive signal being below a maximum limit. Further, the power transmitter (101) comprises an adapter (1309) which adapts the maximum limit in response to a load indication indicative of a loading of the power transfer signal by the power receiver (105).
-
-
-
-
-
-
-
-
-
Search Results
29
records
(took 0.026 seconds)
