-
公开(公告)号：US11303155B2
公开(公告)日：2022-04-12
申请号：US16872243
申请日：2020-05-11
Applicant: Apple Inc.
Inventor： Christopher M. Pinciuc , Zaki Moussaoui
Abstract: A wireless power transmitting device may transmit wireless power signals to a wireless power receiving device. The wireless power receiving device may have a housing. A display may be mounted in the housing on a front face of the device. A rear housing wall on a rear face of the device may be provided with a wireless power receiving solenoid. The solenoid may have a linear strip shape that extends along a longitudinal axis. The longitudinal axis may extend perpendicularly to a wrist strap coupled to the housing. The wireless power receiving solenoid may have opposing first and second ends. The wireless power transmitting device may have a wireless power transmitting solenoid with opposing first and second ends that are configured to transmit the wireless power signals respectively to the first and second ends of the wireless power receiving device when the wireless power receiving solenoid is within the cradle.
-
公开(公告)号：US20210408826A1
公开(公告)日：2021-12-30
申请号：US17217451
申请日：2021-03-30
Applicant: Apple Inc.
Inventor： Nan Liu , Madhusudanan Keezhveedi Sampath , Robert Scritzky , Gianpaolo Lisi , Saining Ren , Kunal Bhargava , Zaki Moussaoui , Zelin Xu
Abstract: A personal electronic device (e.g., a tablet computer) may be configured to wirelessly charge an accessory (e.g., a stylus) through a display face of the device. At least a portion of the display face may be transparent to facilitate display viewing. A wireless charging assembly disposed within the enclosure may include a core having one or more windings disposed thereon, which may be configured to generate a magnetic flux above the display face to couple to the accessory. The core may be a pot core, a modified pot core, or may have another shape, such as a PQ core. The one or more windings may be disposed on one or more posts of a pot core, or additionally or alternatively, may be disposed on another portion of the core. A metallic shield may be disposed about the wireless charging assembly, thereby surrounding multiple sides of the wireless charging assembly.
-
公开(公告)号：US20210344232A1
公开(公告)日：2021-11-04
申请号：US17306716
申请日：2021-05-03
Applicant: Apple Inc.
Inventor： Jukka-pekka J. Sjoeroos , Antoin J. Russell , Zaki Moussaoui
Abstract: A wireless power relay can include a first wireless power receiver (Rx1) configured to receive power from a first wireless power transmitter (Tx1) in another device and a second wireless power transmitter (Tx2) configured to deliver power to a second wireless power receiver (Rx2) in another device. Rx1 may be configured to communicate with Tx1 via a first communication link, and the Tx2 may be configured to receive communication from Rx2 via a second communication link, both employing modulation of the wireless power signal. The relay may further include a power converter with its input coupled to Rx1 and its output coupled to Tx2 and a constant power controller configured to isolate modulated communication between the communication links. Additionally or alternatively, the relay may include circuitry configured to introduce a jamming signal preventing Tx1 from detecting and improperly interpreting signals from the second communications link.
-
公开(公告)号：US11159054B2
公开(公告)日：2021-10-26
申请号：US16513583
申请日：2019-07-16
Applicant: Apple Inc.
Inventor： Christopher M. Pinciuc , Dmitry Berdnikov , Jukka-pekka J. Sjoeroos , Sumant Ranganathan , Weihong Qiu , Zaki Moussaoui
Abstract: A power system has a wireless power transmitting device and a wireless power receiving device. Coils in the transmitting device may include a circular coil overlapped by first and second rectangular coils at a charging surface. The rectangular coils each include straight segments extending over a central region of the circular coil. Control circuitry can activate the circular coil to transmit wireless power to a first type of wireless power receiving coil using vertical components of the magnetic field generated by the circular coil. The control circuitry can activate the rectangular coils to transmit wireless power to a second type of wireless power receiving coil using horizontal components of the magnetic field generated by the rectangular coils. The circular and rectangular coils wirelessly charge the power receiving device while located at the same position on the charging surface, regardless of the type of wireless power receiving coil that is used.
-
公开(公告)号：US11050307B1
公开(公告)日：2021-06-29
申请号：US16798167
申请日：2020-02-21
Applicant: Apple Inc.
Inventor： Weihong Qiu , Dmitry Berdnikov , Zaki Moussaoui
Abstract: A wireless power system has a wireless power transmitting device such as a charging mat with a charging surface and a wireless power receiving device that receives wireless power from coils overlapped by the charging surface. The wireless power transmitting device receives load current and load voltage measurements from the wireless power receiving device and uses this information to produce one or more load lines. The load lines may form a family of load lines each associated with a different respective duty cycle used by inverter circuitry in the wireless power transmitting device in transmitting wireless power signals using the coils. The control circuitry can determine whether the wireless power receiving device has moved by comparing current and voltage information from the wireless power receiving device to the family of load lines and can take appropriate action such as measuring coil inductances for use in subsequent coil selection operations.
-
Patent Agency Ranking
公开(公告)号：US20200321811A1
公开(公告)日：2020-10-08
申请号：US16909904
申请日：2020-06-23
Applicant: Apple Inc.
Inventor： Nan Liu , Dmitry Berdnikov , Weihong Qiu , Zaki Moussaoui
Abstract: A wireless power system may have a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device may have a receive coil that receives wireless power signals from the wireless power transmitting device and may have a rectifier that produces direct-current power from the received wireless power signals. The wireless power transmitting device may have an array of transmit coils. Each transmit coil has a respective magnetic coupling coefficient characterizing its magnetic coupling with the receive coil. The wireless power transmitting device may have control circuitry that uses the magnetic coupling coefficient values in selecting transmit coils to use in transmitting wireless power to the wireless power receiving device.
-
公开(公告)号：US10734840B2
公开(公告)日：2020-08-04
申请号：US15422345
申请日：2017-02-01
Applicant: Apple Inc.
Inventor： Weihong Qiu , Zaki Moussaoui , Rohan Dayal
Abstract: A transmitter device is configured to transfer energy to multiple receiver devices. The transmitter device includes multiple transmitter coils, and a shared power converter is coupled to each transmitter coil. The shared power converter includes a leading half bridge and multiple trailing half bridges. Each transmitter coil is coupled between the leading half bridge and a respective one of the trailing half bridges. The shared power converter is dynamically configurable in that the leading half bridge may be coupled to multiple trailing half bridges when energy is to be transferred wirelessly to two or more receiver devices. The leading half bridge simultaneously operates with each trailing half bridge as an independent full-bridge phase shift inverter. A signal supplied to each transmitter coil is independently regulated by controlling a phase shift of a respective trailing half bridge with respect to the leading half bridge.
-
公开(公告)号：US20200044491A1
公开(公告)日：2020-02-06
申请号：US16196975
申请日：2018-11-20
Applicant: Apple Inc.
Inventor： Weihong Qiu , Nan Liu , Dmitry Berdnikov , Zaki Moussaoui , Rex Huang
Abstract: A wireless power transmission system has a wireless power receiving device that can be charged using multiple different types of wireless power transmitting devices. The different types of wireless power transmitting devices have power transmitting coils that exhibit different levels of magnetic coupling with the power receiving coil of the wireless power receiving device. The wireless power receiving device may include capacitors, resistors, and/or other loading circuits that can be independently switched into use depending on the level of magnetic coupling that is detected, on a rectified voltage level, on the size of the output load, and/or on information conveyed during handshaking operations to present a desired impedance adjustment at the power receiving coil so that data signal can be properly conveyed between the power receiving device and the power transmitting device.
-
公开(公告)号：US20190190324A1
公开(公告)日：2019-06-20
申请号：US16326883
申请日：2017-09-20
Applicant: Apple Inc.
Inventor： Chad A. Bossetti , Christopher S. Graham , David W. Ritter , Todd K. Moyer , Steven G. Herbst , Shimon Elkayam , Nileshbhai J. Shah , Stephen C. Terry , Zaki Moussaoui
CPC classification number: H02J50/90 , G01D5/16 , G01D5/20 , G01D5/24 , H01L41/1132 , H02J7/025 , H02J50/10 , H02J50/12 , H02J50/40
Abstract: A wireless charging mat and method of operating the same. The wireless charging mat includes a detection system configured to determine a location and an orientation of an electronic device on the wireless charging mat. The location and orientation are determined based on detected locations of one or more structural features of the electronic device. The wireless charging mat is operated according to the detected location and orientation.
-
公开(公告)号：US20180294682A1
公开(公告)日：2018-10-11
申请号：US15829850
申请日：2017-12-01
Applicant: Apple Inc.
Inventor： Weihong Qiu , Rohan Dayal , Zaki Moussaoui
Abstract: Disclosed are devices, systems, and methods for reducing common mode noise induced in wireless charging circuits of electronic devices. For an electronic device having an inductive receiving coil near an electric shielding layer, differences in parasitic capacitances of the loops of the inductive receiving coil with an electric shielding layer can induce common mode noise. Common mode noise is reduced by a noise-reduction capacitor from the inductive receiving coil to the electric shielding layer together with a grounding resistor from the electric shielding layer to a common ground of the wireless charging circuit.
-
-
-
-
-
-
-
-
-
Search Results
94
records
(took 0.032 seconds)
