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公开(公告)号：US20240006924A1
公开(公告)日：2024-01-04
申请号：US18465493
申请日：2023-09-12
Applicant: Apple Inc.
Inventor： Liang Chen
CPC classification number: H02J50/12 , H02J50/60 , H02J7/0029 , H02J50/05
Abstract: An inductive power transmitter comprising: a converter configured to generate at least two object detection signals at substantially different frequencies, at least one transmitting coil configured to generate a magnetic field based on the object detection signals, and a controller configured to determine or measure circuit parameter(s) in relation to the coil to determine the inductance of the coil at each of the frequencies, and determine whether and/or what kind of object is present depending on a change in inductance between each of the frequencies.
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公开(公告)号：US11251656B2
公开(公告)日：2022-02-15
申请号：US16503394
申请日：2019-07-03
Applicant: Apple Inc.
Inventor： Saining Ren , Ho Fai Leung , Liang Chen
Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. The wireless power transmitting device may be a wireless charging mat with one or more coils or may be a wireless charging puck with one or more coils. In some embodiments, the wireless charging puck may have six coils or other number of coils arranged in a ring. The wireless power receiving device may have an elongated magnetic core such as a C-shaped core with pillars at opposing ends. First and second coils may be formed on the pillars and a third coil may be formed between the first and second coils. The coils of the wireless power receiving device such as the first and second coils on the magnetic core may be configured to receive magnetic flux emitted by a pair of the six coils in the wireless charging puck.
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公开(公告)号：US20200321807A1
公开(公告)日：2020-10-08
申请号：US16503394
申请日：2019-07-03
Applicant: Apple Inc.
Inventor： Saining Ren , Ho Fai Leung , Liang Chen
Abstract: A wireless power system has a wireless power transmitting device and a wireless power receiving device. The wireless power transmitting device may be a wireless charging mat with one or more coils or may be a wireless charging puck with one or more coils. In some embodiments, the wireless charging puck may have six coils or other number of coils arranged in a ring. The wireless power receiving device may have an elongated magnetic core such as a C-shaped core with pillars at opposing ends. First and second coils may be formed on the pillars and a third coil may be formed between the first and second coils. The coils of the wireless power receiving device such as the first and second coils on the magnetic core may be configured to receive magnetic flux emitted by a pair of the six coils in the wireless charging puck.
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公开(公告)号：US10320241B2
公开(公告)日：2019-06-11
申请号：US15967285
申请日：2018-04-30
Applicant: Apple Inc.
Inventor： Liang Chen , Andrew Gray , Arunim Kumar , Zachary Strachan Harris , Antoin J. Russell , Bharat K. Patel
Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using output circuitry that includes an array of wireless power transmitting coils that form a wireless charging surface. During wireless power transmission operations, wireless power signals are transmitted from the array of coils to a wireless power receiving device on the charging surface. Inductance measurement circuitry such as impulse response measurement circuitry and other measurement circuitry is coupled to the output circuitry. Control circuitry in the wireless power transmitting device analyzes signals from the measurement circuitry to produce two-dimensional signal profiles across the wireless charging surface and to compare patterns in these signal profiles to predetermined signal patterns associated with the presence of known power receiving equipment on the wireless charging surface. Based on the analysis, charging parameters may be adjusted or other actions taken.
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公开(公告)号：US11791659B2
公开(公告)日：2023-10-17
申请号：US17149167
申请日：2021-01-14
Applicant: Apple Inc.
Inventor： Liang Chen
CPC classification number: H02J50/12 , H02J7/0029 , H02J50/05 , H02J50/60
Abstract: An inductive power transmitter comprising: a converter configured to generate at least two object detection signals at substantially different frequencies, at least one transmitting coil configured to generate a magnetic field based on the object detection signals, and a controller configured to determine or measure circuit parameter(s) in relation to the coil to determine the inductance of the coil at each of the frequencies, and determine whether and/or what kind of object is present depending on a change in inductance between each of the frequencies.
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Patent Agency Ranking
公开(公告)号：US11362548B1
公开(公告)日：2022-06-14
申请号：US16942161
申请日：2020-07-29
Applicant: Apple Inc.
Inventor： Saining Ren , Ho Fai Leung , Liang Chen
Abstract: A wireless power system has a wireless power transmitting device such as a charging puck and a wireless power receiving device such as a wristwatch. The charging puck may have a three-wire cable that is coupled between a connector and a puck housing. The wireless power transmitting device may have a set of four coils or other number of wireless power transmitting coils in the puck housing. A switch may be coupled in series with each of the four coils. Control circuitry in the wireless power transmitting device may activate a subset of the switches to switch a subset of the coils into use in transmitting the wireless power to the wireless power receiving device. The control circuitry may have a main portion in the connector that uses a tone-based encoding scheme or other encoding scheme to transmit switch configuration commands to a secondary portion in the puck housing.
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公开(公告)号：US20190311848A1
公开(公告)日：2019-10-10
申请号：US16134812
申请日：2018-09-18
Applicant: Apple Inc.
Inventor： Liang Chen , Saining Ren
Abstract: An inductive power transfer assembly comprising a magnetic core having a base portion, a first limb, and a second limb, wherein the first limb and the second limb extend, in a direction, from a surface of the base portion a first power transfer coil and a second power transfer coil, wherein the first power transfer coil is wound about the first limb, and wherein the second power transfer coil is wound about the second limb; and inverter circuitry connected to the first power transfer coil and the second power transfer coil, wherein the inverter circuitry, during operation, causes the first power transfer coil and the second power transfer coil to generate flux having opposing polarity.
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公开(公告)号：US20180337557A1
公开(公告)日：2018-11-22
申请号：US15967285
申请日：2018-04-30
Applicant: Apple Inc.
Inventor： Liang Chen , Andrew Gray , Arunim Kumar , Zachary Strachan Harris , Antoin J. Russell , Bharat K. Patel
Abstract: A wireless power transmitting device transmits wireless power signals to a wireless power receiving device using output circuitry that includes an array of wireless power transmitting coils that form a wireless charging surface. During wireless power transmission operations, wireless power signals are transmitted from the array of coils to a wireless power receiving device on the charging surface. Inductance measurement circuitry such as impulse response measurement circuitry and other measurement circuitry is coupled to the output circuitry. Control circuitry in the wireless power transmitting device analyzes signals from the measurement circuitry to produce two-dimensional signal profiles across the wireless charging surface and to compare patterns in these signal profiles to predetermined signal patterns associated with the presence of known power receiving equipment on the wireless charging surface. Based on the analysis, charging parameters may be adjusted or other actions taken.
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公开(公告)号：US11329519B2
公开(公告)日：2022-05-10
申请号：US15562608
申请日：2016-04-01
Applicant: Apple Inc.
Inventor： Liang Chen
Abstract: An inductive power transmitter 2 comprising: at least one power transmitting coil 7 configured to generate an inductive power transfer (IPT) field, and an object detection (OD) system 200 configured to detect the presence of an object based on a change in energy decay or change in resonant frequency of a resonant circuit integrated with or coupled to the transmitting coil.
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公开(公告)号：US20210136550A1
公开(公告)日：2021-05-06
申请号：US16868077
申请日：2020-05-06
Applicant: Apple Inc.
Inventor： Adam L. Schwartz , Ron Rafer C. Floresca , Liang Chen , Zaki Moussaoui
Abstract: An electronic device such as a portable electronic device has wireless power receiving circuitry. A vehicle has a vehicle remote keyless system that transmits beacons. A key receives the beacons and responds with key codes to unlock doors and enable a vehicle ignition in the vehicle. In the presence of wireless power transfer operations there is a risk that wireless power signals will interfere with the reception of the beacons by the key. To ensure that beacons are satisfactorily received, conditions in which there is a risk of interference are detected and corresponding interference mitigation operations are performed.
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