公开(公告)号：WO2021257265A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/034620

申请日：2021-05-27

Applicant: APPLE INC.

Inventor： QIU, Weihong ,  MOUSSAOUI, Zaki ,  XU, Zelin

IPC: H02J50/10 ,  H01F27/24 ,  H01F27/28 ,  H02J50/005 ,  H02J50/12

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：WO2021247250A1

公开(公告)日：2021-12-09

申请号：PCT/US2021/033553

申请日：2021-05-21

Applicant: APPLE INC.

Inventor： XU, Zelin ,  LIU, Nan ,  MOUSSAOUI, Zaki ,  LISI, Gianpaolo ,  BHARGAVA, Kunal ,  KEEZHVEEDI SAMPATH, Madhusudanan ,  CHABALKO, Matthew, J. ,  SCRITZKY, Robert

IPC: H02J50/10 ,  G06F3/03545 ,  H01F27/38 ,  H01F3/10 ,  H01F38/14 ,  H01F7/02 ,  H01F7/0247 ,  H02J7/0042 ,  H02J7/02 ,  H05K5/0017 ,  H05K5/03 ,  H05K9/0007

Abstract: A device in a wireless power system may be operable with a removable accessory such as a case. The device may transmit or receive wireless power through the case while the electronic device is coupled to the case. The case may have a folio shape with a front cover portion that covers the display of the electronic device. The case may have an embedded ferrimagnetic core that relays magnetic flux during wireless power transfer operations. Magnetic alignment structures in the case may position the ferrimagnetic core in the case in a high magnetic flux density region between the power transmitting device and the power receiving device. The ferrimagnetic core relays the magnetic flux between a transmitting coil in the power transmitting device and a receiving coil in the power receiving device. The ferrimagnetic core may be formed in a front portion, a sidewall, or a rear wall of a case.

公开(公告)号：WO2023027825A2

公开(公告)日：2023-03-02

申请号：PCT/US2022/037212

申请日：2022-07-14

Applicant: APPLE INC.

Inventor： SHI, Lixin ,  QIU, Weihong ,  XU, Zelin ,  MOUSSAOUI, Zaki ,  CHABALKO, Matthew, J.

IPC: H02J50/90 ,  H02J50/10

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：WO2021257168A1

公开(公告)日：2021-12-23

申请号：PCT/US2021/027142

申请日：2021-04-13

Applicant: APPLE INC.

Inventor： MOUSSAOUI, Zaki ,  XU, Zelin ,  CHABALKO, Matthew, J. ,  LIU, Nan

IPC: H02J50/10 ,  H01F27/24 ,  H01F38/14 ,  H02J50/12 ,  H02J50/90 ,  H02J7/02

Abstract: An electronic device in a wireless power system may be operable with a removable accessory such as a case. The device may convey wireless power to, from, or through the case while the device is coupled to the case. The device may have coplanar power transmitting and power receiving coils. The removable accessory may have an embedded switchable ferrimagnetic core and a coil that overlaps the switchable ferrimagnetic core. The switchable ferrimagnetic core may be operable in a first state where the switchable ferrimagnetic core is unsaturated. The switchable ferrimagnetic core may be operable in a second state where the switchable ferrimagnetic core is saturated by a magnetic field from a permanent magnet in a wireless power transmitting device. In the second state, the switchable ferrimagnetic core may have a lower magnetic permeability and higher magnetic reluctance than in the first state.