Wireless power transfer system, methods or devices

    公开(公告)号:US11515738B2

    公开(公告)日:2022-11-29

    申请号:US16836643

    申请日:2020-03-31

    Applicant: Apple Inc.

    Abstract: A wireless power transmission system comprising a wireless power transmitting device and a wireless power receiving device. The wireless power receiving device is configured to enter a cloak state when a temporary pause in power transfer is desired. The wireless power receiving device may allow or deny a communication data stream with the wireless power transmitting device during the cloak state. The wireless power receiving device may request a hot start power transfer phase with the wireless power transmitting device after the cloak state. The wireless power transmitting device may or revert (reset) to a default operating state in the event that a control error packet is received during the cloak state.

    Communication Between Devices During Wireless Power Transfer

    公开(公告)号:US20220231729A1

    公开(公告)日:2022-07-21

    申请号:US17714902

    申请日:2022-04-06

    Applicant: Apple Inc.

    Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. The devices in the wireless power system may communicate using in-band communication. The wireless power transmitting device may transmit data to the wireless power receiving device using frequency-shift keying (FSK) modulation. The wireless power receiving device may transmit data to the wireless power transmitting device using amplitude-shift keying (ASK) modulation. While transmitting data to the wireless power receiving device using FSK modulation, the wireless power transmitting device may monitor for ASK modulation from the wireless power receiving device. In response to detecting the ASK modulation from the wireless power receiving device, the wireless power transmitting device may abort the FSK data transmission and process the detected ASK modulation to receive data from the wireless power receiving device.

    State of Charge Information for a Wireless Power Transmitting Device

    公开(公告)号:US20220006330A1

    公开(公告)日:2022-01-06

    申请号:US17100598

    申请日:2020-11-20

    Applicant: Apple Inc.

    Abstract: A wireless power system may include power transmitting devices, power receiving devices, and power transmitting and receiving devices. During a configuration phase (e.g., when placed adjacent to another device), a battery-powered transmitting device may transmit information to the additional device that identifies a presence of the battery in the transmitting device. The battery-powered transmitting device may periodically report its state of charge to a power receiving device using in-band communication. The battery-powered transmitting device may report its state of charge before a power transfer phase (e.g., in the configuration phase) or during the power transfer phase. The battery-powered transmitting device may report its state of charge to the power receiving device in response to a state of charge query from the power receiving device. The power receiving device may display the state of charge of the battery of the power transmitting device.

    Communication Between Devices in a Wireless Charging System

    公开(公告)号:US20210376666A1

    公开(公告)日:2021-12-02

    申请号:US17100123

    申请日:2020-11-20

    Applicant: Apple Inc.

    Abstract: A wireless power system may include devices that transmit and/or receive wireless power. The devices in the wireless power system may exchange packets in order to transfer various types of data. The data may be transmitted using in-band communication. The devices may use locally assigned addresses to communicate with any other device in the wireless power system. During a network discovery process, device lists may be exchanged between the devices until each device has a complete list of all other devices in the network. The list of all other devices in the network may include a respective address for each device that is based on the topology of the network. Even if a first device is not inductively coupled to a second device, the locally assigned addresses may identify an inductive coupling path from the first device to the second device that includes at least one intervening device.

Patent Agency Ranking