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公开(公告)号：US20250087404A1
公开(公告)日：2025-03-13
申请号：US18043468
申请日：2023-02-03
Applicant: Renesas Electronics America Inc.
Inventor： Sheng Yuan , Shangfeng Jiang , Weiwei Zhou , Jiangjian Huang , Bo Tang
Abstract: Structures, devices, and methods for wireless power transfer systems are described. A structure can include a plurality of strands arranged into a first coil layer and a second coil layer. The plurality of strands can be formed on a parallel path surrounding a center of the structure. The plurality of strands can extend away from the center on the first coil layer. The plurality of strands can extend towards the center on the second coil layer. For every fixed interval along a length of the structure, a first strand among the plurality of strands can be looped from the first coil layer to the second coil layer and a second strand among the plurality of strands can be looped from the second coil layer to the first coil layer.
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公开(公告)号：US20230027127A1
公开(公告)日：2023-01-26
申请号：US17383870
申请日：2021-07-23
Applicant: Renesas Electronics America Inc.
Inventor： Jiangjian Huang , Hulong Zeng
Abstract: Apparatuses including multiple selectable circuit elements are described. In an example, an apparatus may include a power supply configured to output a voltage. The apparatus may further include a controller connected to the power supply and a transmission unit connected to the controller. The transmission unit may be configured to output power. The transmission unit may include comprising an inverter connected to the power supply. The inverter may include a high-side switching element. The transmission unit may further include a circuit element a circuit connected to the power supply. The circuit may be configured to select the circuit element. The circuit may include a switch connected between the inverter and the circuit element. The switch and the high-side switching element may be configured to be driven by the voltage outputted by power supply. The controller may be configured to control the power being outputted by the transmission unit.
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公开(公告)号：US20240204566A1
公开(公告)日：2024-06-20
申请号：US17801149
申请日：2022-07-21
Applicant: Renesas Electronics America Inc.
Inventor： Sheng Yuan , Jiangjian Huang , Shangfeng Jiang , Weiwei Zhou
CPC classification number: H02J50/10 , H01F27/2804 , H01F41/041 , H01F2027/2809
Abstract: Apparatuses including a coil and methods of forming the coil are described. The coil can include a first coil layer including at least an inner strand and an outer strand. The coil can further include a second coil layer including at least an inner strand and an outer strand. The inner strand of the first coil layer can be connected to the outer strand of the second coil layer. The outer strand of the first coil layer can be connected to the inner strand of the second coil layer.
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公开(公告)号：US20230084847A1
公开(公告)日：2023-03-16
申请号：US17475814
申请日：2021-09-15
Applicant: Renesas Electronics America Inc.
Inventor： Jiangjian Huang , Hulong Zeng , Gopinath Akkinepally , Amit Dharmendra Bavisi
Abstract: Systems and apparatuses for wireless power transfer system are described. A receiver may send an amplitude shift key (ASK) signal to a transmitter. The transmitter may receive the ASK signal from the receiver. The transmitter may perform a demodulation on the ASK signal. The transmitter may, in response to a failure to demodulate the ASK signal, encode a notification of failure in a frequency shift key (FSK) signal. The transmitter may transmit the FSK signal to the receiver. The receiver may receive the FSK signal. The receiver may perform a function to resolve the failure to demodulate the ASK signal.
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公开(公告)号：US20250079890A1
公开(公告)日：2025-03-06
申请号：US18043433
申请日：2022-12-30
Applicant: Renesas Electronics America Inc.
Inventor： Sheng Yuan , Jiangjian Huang , Bo Tang , Hulong Zeng
Abstract: A wireless power apparatus may include a power receiver having an elongated core member with a long axis and a receiver conductor wound spirally around the elongated core member to form an elongated receiver coil, the power receiver configured to receive power from a power transmitter having a transmitter conductor being wound circularly around a center point and disposed in a plane to form a planar transmitter coil, the planar transmitter coil configured to be connected to an alternating current power source to wirelessly transmit power, the planar transmitter coil having a transmitter coil radial axis starting at the center point and defining a transmitting region from an inner edge of the planar transmitter coil to an outer edge of the planar transmitter coil along the transmitter coil radial axis.
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Patent Agency Ranking
公开(公告)号：US20220224137A1
公开(公告)日：2022-07-14
申请号：US17147916
申请日：2021-01-13
Applicant: Renesas Electronics America Inc.
Inventor： Jiangjian Huang , Hulong Zeng
Abstract: An apparatus, a method and a non-transitory computer-readable storage medium storing a program for controlling power receiving operation. The apparatus includes a controller configured to compare a frequency of an electric current generated by a voltage induced in a power receiving circuit by a magnetic field generated by a power transmitting apparatus, against a frequency threshold to determine whether the frequency is equal to or below the frequency threshold, and in response to determining that the frequency is equal to or below the frequency threshold, control a communications circuit to communicate a control command message instructing the power transmitting apparatus to modify a power charge signal used to provide the magnetic field in a manner for protecting the apparatus.
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公开(公告)号：US20210384722A1
公开(公告)日：2021-12-09
申请号：US16894346
申请日：2020-06-05
Applicant: Renesas Electronics America Inc.
Inventor： Gustavo Mehas , Nicholaus Smith , Tao Qi , Jiangjian Huang
Abstract: A wireless transmitter coordinates changes in the transmitter's input or output voltages with changes in the transmitter's operating frequency to counteract the transmitter's output power changes while changing the voltages. When the voltages are being increased, the output frequency is moved away from the resonant frequency. Consequently, the output power increase due to the increased voltages is restrained by the frequency change. Before or after the voltage increase, increased output power can be obtained by changing the output frequency while the input and output voltages are held constant or near constant. Some embodiments follow similar procedures when reducing the transmitter's input or output voltages. Calibration is performed before power transfer to determine suitable voltage and frequency profiles for voltage change operations. Other features are also provided.
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公开(公告)号：US20250079069A1
公开(公告)日：2025-03-06
申请号：US18043444
申请日：2023-02-03
Applicant: Renesas Electronics America Inc.
Inventor： Sheng Yuan , Shangfeng Jiang , Weiwei Zhou , Jiangjian Huang , Bo Tang , Hulong Zeng
IPC: H01F27/28 , H01F41/061 , H01F41/074 , H02J50/00 , H02J50/10
Abstract: Structures, devices, and methods for wireless power transfer systems are described. A structure can include a plurality of strands a plurality arranged into a coil layer. For every fixed interval along a length of the structure, the plurality of strands can be folded at a lateral angle and vertically inverted in response to being folded at the lateral angle. The plurality of strands being folded can cause the plurality of strands to surround a center of the structure in a parallel path.
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公开(公告)号：US20240204550A1
公开(公告)日：2024-06-20
申请号：US17802790
申请日：2022-05-31
Applicant: Xue KE , Renesas Electronics America Inc.
Inventor： Mihail Jefremow , Amit Bavisi , Jiangjian Huang , Xue Ke , Turev Acar
CPC classification number: H02J7/00712 , H02J7/0042 , H02J50/10
Abstract: In an embodiment, a semiconductor device is disclosed that includes a wired input/output, a wireless input/output, and a battery. A wired charging path between the wired input/output and the battery includes a first transistor and a second transistor. A wireless charging path between the wireless input/output and the battery includes a third transistor and the second transistor.
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公开(公告)号：US20240097493A1
公开(公告)日：2024-03-21
申请号：US17945474
申请日：2022-09-15
Applicant: RENESAS ELECTRONICS AMERICA INC.
Inventor： Jiangjian Huang , Hulong Zeng
Abstract: Systems and methods for wireless power transfer systems are described. A controller of a device can communicate with a power device by a first modulation mode. The controller can detect a failure condition between the controller and the power device. The controller can, in response to the detection of the failure condition, communicate with the power device by a second modulation mode. The first modulation mode can include capacitive modulation and the second modulation mode can include resistive modulation.
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