-
公开(公告)号：US20240405609A1
公开(公告)日：2024-12-05
申请号：US18800944
申请日：2024-08-12
Applicant: Apple Inc.
Inventor： Lixin Shi , Weihong Qiu , Zelin Xu , Zaki Moussaoui , Matthew J. Chabalko
Abstract: An electronic device (that is capable of both transmitting and receiving wireless power) may be physically and inductively coupled to a removable accessory (that only receives wireless power). The electronic device and removable accessory may optionally be placed on a power transmitting device. In response to the electronic device and removable accessory being placed on a wireless power transmitting device, the electronic device may switch from a power transmitting mode (in which the electronic device transmits wireless power to the removable accessory) to a power receiving mode (in which the electronic device receives wireless power from the wireless power transmitting device). To ensure the electronic device detects the wireless power transmitting device and switches to the power receiving mode in this scenario, the electronic device may transmit wireless power in bursts separated by sleep periods while in the power transmitting mode.
-
公开(公告)号：US12149093B2
公开(公告)日：2024-11-19
申请号：US16987691
申请日：2020-08-07
Applicant: Apple Inc.
Inventor： Weihong Qiu , Jun Liu , Zaki Moussaoui
Abstract: Electronic apparatuses according to embodiments of the present technology may include an electronic device a first surface and a second surface opposite the first. The electronic device may include a battery and a wireless charging coil within an interior volume of the device. The electronic device may include a first magnetic conductor and positioned between the battery and the wireless charging coil. The electronic device may also include an integrated circuit coupled with the battery and the wireless charging coil. The apparatuses may include a case extending about the electronic device. The case may be characterized by a first surface and a second surface. The case may be characterized by a thickness between the first surface of the case and the second surface of the case. The case may include a second magnetic conductor incorporated within the thickness of the case at the second surface of the case.
-
公开(公告)号：US11979030B2
公开(公告)日：2024-05-07
申请号：US16983866
申请日：2020-08-03
Applicant: Apple Inc.
Inventor： Weihong Qiu , Zaki Moussaoui , Rohan Dayal
CPC classification number: H02J50/12 , H02J50/402
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.
-
4.发明申请
公开(公告)号：US20210399577A1
公开(公告)日：2021-12-23
申请号：US17180540
申请日：2021-02-19
Applicant: Apple Inc.
Inventor： Weihong Qiu , Zaki Moussaoui , Zelin Xu
Abstract: An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may have coplanar power transmitting and power receiving coils. The transmitting coil may be positioned within a central opening of the receiving coil. The removable accessory may have an embedded receiving coil configured to receive wireless power from the transmitting coil of the electronic device. The receiving coil of the electronic device may receive wireless power from a power transmitting device such as charging mat. The receiving coil of the electronic device may operate up to a higher maximum power than the transmitting coil of the electronic device. The power transmitting coil and power receiving coil in the electronic device may operate at different power transmission frequencies. To mitigate crosstalk, the power transmitting coil's operation frequency may be a non-integer multiple of the power receiving coil's operation frequency.
-
公开(公告)号：US11121573B1
公开(公告)日：2021-09-14
申请号：US15476652
申请日：2017-03-31
Applicant: Apple Inc.
Inventor： InHwan Oh , Zaki Moussaoui , Rohan Dayal , Bharat K. Patel , Manisha P. Pandya , Weihong Qiu , Malhar V. Bhatt
Abstract: A power converter can be implemented as a series of power conversion stages, including a wireless power conversion stage. In typical embodiments, the power converter receives power directly from mains voltage and outputs power to a battery within an electronic device. A transmitter side of the power converter converts alternating current received from a power source (e.g., mains voltage) to an alternating current suitable for applying to a primary coil of the wireless power conversion stage of the power converter.
-
公开(公告)号：US10811913B2
公开(公告)日：2020-10-20
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：US10608468B2
公开(公告)日：2020-03-31
申请号：US15611622
申请日：2017-06-01
Applicant: Apple Inc.
Inventor： Rohan Dayal , Weihong Qiu , Zaki Moussaoui
IPC: H02J50/10 , H02J50/80 , H02J7/02 , H04B1/3827
Abstract: A wireless power transmitting device may have control circuitry that supplies drive signals to a coil to produce wireless power signals. The wireless power receiving device may have a coil that receives the transmitted wireless power signals from the wireless power transmitting device. The wireless power receiving device may have a rectifier that rectifies signals received by the coil in the wireless power receiving device and that provides a rectified voltage to a capacitor. A charger in the wireless power receiving device may charge a battery in the device using the rectified voltage. When it is desired to convey information to the wireless power transmitting device, the wireless power transmitting device may cease the transmission of wireless power and the wireless power receiving device may modulate transistors in the rectifier to transmit data to the wireless power transmitting device.
-
公开(公告)号：US20200099257A1
公开(公告)日：2020-03-26
申请号：US16576692
申请日：2019-09-19
Applicant: Apple Inc.
Inventor： Weihong Qiu , Jun Liu , Zaki Moussaoui , Karl Ruben F. Larsson
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 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. A charging status indicator may be displayed by the wireless power receiving device during wireless power transmission. Control circuitry in the wireless power receiving device may monitor the output voltage to determine whether wireless power transmission has been lost. The charging status indicator may continue to be displayed for a debounce period following detection of loss of wireless power transmission. The debounce period may be adjusted based on whether power loss is due to user movement of the receiving device or termination of power transmission by the transmitting device.
-
公开(公告)号：US10483786B2
公开(公告)日：2019-11-19
申请号：US15473453
申请日：2017-03-29
Applicant: Apple Inc.
Inventor： Zaki Moussaoui , Rohan Dayal , Weihong Qiu
Abstract: A wireless power transmitting device may have an array of transmitting coils to transmit power wirelessly to a wireless power receiving device having an array of wireless power receiving coils. The receiving device may have a rectifier that receives alternating-current signals from the wireless power receiving coils and provides corresponding rectified direct-current voltage signals to a capacitor and other circuitry. The rectifier circuitry may include bridge circuits each of which is coupled between a respective coil in the array of wireless power receiving coils and the capacitor. The wireless power transmitting coils may be arranged in a hexagonally tiled array. The wireless power receiving coils may include first, second, and third coils that are aligned with respective vertices in an equilateral triangle having sides with lengths equal to half of the center-to-center spacing of the hexagonally tiled transmitting coils.
-
公开(公告)号：US10326316B2
公开(公告)日：2019-06-18
申请号：US15804596
申请日：2017-11-06
Applicant: Apple Inc.
Inventor： Heng Yang , Weihong Qiu , Zaki Moussaoui
Abstract: A wireless power transmission system has a wireless power receiving device that is located on a charging surface. The wireless power transmitting device has an array of wireless power transmitting coils that overlap the charging surface. The wireless power transmitting device uses inductance measurement circuitry that is coupled to the coil array to measure coil inductances for the wireless power transmitting coils. The wireless power receiving device may contain a communications integrated circuit, display circuitry, or other sensitive components. The location and orientation of the wireless receiving device on the charging surface can be determined by analyzing the coil inductances. This information and information on the location of the sensitive component within the wireless power receiving device can be used to select a wireless power transmitting coil to transmit wireless power signals to the wireless power receiving device without exposing the sensitive component to excessive wireless power signals.
