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公开(公告)号：US11936213B2
公开(公告)日：2024-03-19
申请号：US18084321
申请日：2022-12-19
申请人： NuCurrent, Inc.
发明人： Andrew Kovacs , Jason Green
摘要： A power transmitter for wireless power transfer includes a verification load, a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, provide a power request to an external power supply, determine if a power signal at the verification load is compliant with the power request, and, if the power signal at the verification load is compliant with the power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.
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2.发明授权公开(公告)号：US11791667B2
公开(公告)日：2023-10-17
申请号：US17245959
申请日：2021-04-30
申请人： NuCurrent, Inc.
发明人： Mark Melone , Andrew Kovacs , Jason Green
摘要： A power transmitter for wireless power transfer includes a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, receive a receiver power request from a power receiver, provide a power request to an external power supply, based on the receiver power request, determine if a power signal at the coil is compliant with the receiver power request, and, if the power signal at the coil is compliant with the receiver power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.
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公开(公告)号：US20230114478A1
公开(公告)日：2023-04-13
申请号：US17966563
申请日：2022-10-14
申请人： NuCurrent, Inc.
发明人： Jason Green , Andrew Kovacs , Mark Melone , Md Nazmul Alam
摘要： A power transmitter for wireless power transfer includes a control and communications unit configured to provide power control signals to a power supply external to the power transmitter for controlling a power level of a power signal configured for transmission to a power receiver, the power supply configured to configure a direct current (DC) power based on the power control signals. The power transmitter further includes an inverter circuit configured to receive the DC power from the power supply external to the power transmitter and convert the input power to a power signal. The power transmitter further includes a coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a top face and shielding comprising a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.
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公开(公告)号：US11476722B2
公开(公告)日：2022-10-18
申请号：US16863698
申请日：2020-04-30
申请人： NuCurrent, Inc.
发明人： Jason Green , Andrew Kovacs , Mark Melone , Md Nazmul Alam
摘要： A power transmitter for wireless power transfer includes a control and communications unit configured to provide power control signals to a power supply external to the power transmitter for controlling a power level of a power signal configured for transmission to a power receiver, the power supply configured to configure a direct current (DC) power based on the power control signals. The power transmitter further includes an inverter circuit configured to receive the DC power from the power supply external to the power transmitter and convert the input power to a power signal. The power transmitter further includes a coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a top face and shielding comprising a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.
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5.发明授权公开(公告)号：US11444496B1
公开(公告)日：2022-09-13
申请号：US17235738
申请日：2021-04-20
申请人： NuCurrent, Inc.
发明人： Jim Crnkovic , Andrew Kovacs , Jason Green , Md Nazmul Alam
摘要： A power transmitter includes a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, provide a power timing request to an external power supply, and determine if the timing of the external power supply is compliant if the power timing request is met within a timing interval. The coil is configured to transmit the power signal to a power receiver, the coil formed of wound Litz wire and including at least one layer, the coil defining, at least, a top face. The shielding comprises a ferrite core and defining a cavity, the cavity configured such that the ferrite core substantially surrounds all but the top face of the coil.
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公开(公告)号：US20210020348A1
公开(公告)日：2021-01-21
申请号：US16517077
申请日：2019-07-19
申请人： NUCURRENT, INC.
摘要： The present application relates to an apparatus which comprises a wireless power transfer (WPT) system. This system comprises features which allow it to transfer more power wirelessly at extended distances than other systems operating in the same frequency range. The system possesses heat dissipation features; these features allow it to operate effectively in elevated-temperature environments, and to transfer power at higher levels and/or greater distances than a typical power-transfer system. The system also might include design features to withstand mechanical shocks, stresses, and impacts for use in a rugged environment. The system can also comprise adaptations to reduce electromagnetic interference (EMI), and can comprise specially shaped components with magnetic/ferrimagnetic properties that enhance performance. Other potential features include power conditioning by combining, within one circuit or one board, multiple elements that protect against excessive current, over-voltage, and/or reverse voltage. Other features might include integration of an antenna and a battery within one module.
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7.发明公开公开(公告)号：US20240223023A1
公开(公告)日：2024-07-04
申请号：US18487468
申请日：2023-10-16
申请人： NuCurrent, Inc.
发明人： Mark Melone , Andrew Kovacs , Jason Green
摘要： A power transmitter for wireless power transfer includes a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, receive a receiver power request from a power receiver, provide a power request to an external power supply, based on the receiver power request, determine if a power signal at the coil is compliant with the receiver power request, and, if the power signal at the coil is compliant with the receiver power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.
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8.发明公开公开(公告)号：US20230231421A1
公开(公告)日：2023-07-20
申请号：US18084321
申请日：2022-12-19
申请人： NuCurrent, Inc.
发明人： Andrew Kovacs , Jason Green
摘要： A power transmitter for wireless power transfer includes a verification load, a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, provide a power request to an external power supply, determine if a power signal at the verification load is compliant with the power request, and, if the power signal at the verification load is compliant with the power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.
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公开(公告)号：US20230216341A1
公开(公告)日：2023-07-06
申请号：US18079724
申请日：2022-12-12
申请人： NuCurrent, Inc.
发明人： Md. Nazmul Alam , Alberto Peralta , Andrew Kovacs
CPC分类号： H02J50/005 , H02J50/12 , H01Q1/36 , H04B5/0037 , H02J50/80
摘要： A wireless power transfer system includes an antenna base having a charger surface configured substantially as a concave spherical section and a first antenna comprising a spiral wire coil conforming to the charger surface of the antenna base. A target item includes an interface surface configured as a convex spherical section substantially matching the concave spherical section of the charger base. A second antenna is located within the target item and adjacent to the interface surface such that when the target item is placed in the antenna base with the interface surface mated to the charger surface, the first and second antennas are within inductive coupling range for wireless power transfer between the antennas.
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公开(公告)号：US11532956B2
公开(公告)日：2022-12-20
申请号：US17245953
申请日：2021-04-30
申请人： NuCurrent, Inc.
发明人： Andrew Kovacs , Jason Green
摘要： A power transmitter for wireless power transfer includes a verification load, a control and communications unit, an inverter circuit, a coil, and a shielding. The control and communications unit is configured to provide power control signals to control a power level of a power signal configured for transmission to a power receiver, provide a power request to an external power supply, determine if a power signal at the verification load is compliant with the power request, and, if the power signal at the verification load is compliant with the power request, continue to operate for wireless power transmission. The coil is configured to transmit the power signal to a power receiver. The shielding comprises a ferrite core.
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