公开(公告)号：US20240356382A1

公开(公告)日：2024-10-24

申请号：US18412427

申请日：2024-01-12

Applicant: NuCurrent, Inc.

Inventor： Jason Luzinski ,  Alberto Peralta ,  Matt Zamborsky

IPC: H02J50/60 ,  H01F38/14 ,  H02J50/00 ,  H02J50/10 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80

CPC classification number: H02J50/60 ,  H02J50/005 ,  H02J50/10 ,  H02J50/12 ,  H02J50/40 ,  H02J50/80 ,  H01F38/14

Abstract: A wireless power transmission system includes a wireless power transmitter, a wireless power transfer circuit electrically connectable to the at least one wireless power transmitter, and a transmitter controller. The transmitter controller is configured to perform an initial foreign object detection prior to any transmission of wireless power, the initial foreign object detection for detecting presence of a foreign object within a charge volume, the initial foreign object detection determining an initial quality factor (Q). The controller is further configured to begin wireless power transfer negotiations with one of the one or more wireless power receivers, if the initial Q has a value in a range indicating that an object in the charge volume is a wireless power receiver, and perform continuous foreign object detection, if the initial Q has the value in the range indicating that an object in the charge volume is a wireless power receiver.

公开(公告)号：US12126188B2

公开(公告)日：2024-10-22

申请号：US18355982

申请日：2023-07-20

Applicant: LG INNOTEK CO., LTD.

Inventor： Yu Ri Park ,  Yong Il Kwon

IPC: H02J50/60 ,  H02J7/02 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80 ,  H02J50/90 ,  H04L5/00 ,  H02J50/40

CPC classification number: H02J50/60 ,  H02J7/02 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80 ,  H02J50/90 ,  H04L5/0055 ,  H02J50/402

Abstract: A wireless power transmitter for transmitting power to a wireless power receiver, including a controller configured to determine whether a foreign object is present in a charging area of the wireless power transmitter; and a transmission part configured to transmit wireless power according to whether the foreign object is present, wherein the controller receives a signal including an FOD status packet from the wireless power receiver, and determines whether the foreign object is present in the charging area of the wireless power transmitter based on the FOD status packet; wherein the controller is set to be operated in a first power transfer mode when determining that the foreign object is present in the charging area, or to be operated in a second power transfer mode when determining that the foreign object is not present in the charging area; and wherein the controller determines whether the foreign object is present in the charging area based on information other than information included in the FOD status packet, while being operated in any one of the first power transfer mode and the second power transfer mode.

公开(公告)号：US20240348095A1

公开(公告)日：2024-10-17

申请号：US18641068

申请日：2024-04-19

Applicant: NuCurrent, Inc.

Inventor： Md Nazmul Alam ,  Jason Luzinski

IPC: H02J50/00 ,  H01F27/28 ,  H02J50/12 ,  H02J50/60 ,  H02J50/80 ,  H02J50/90 ,  H04B5/79

CPC classification number: H02J50/005 ,  H01F27/2823 ,  H02J50/12 ,  H02J50/60 ,  H04B5/79 ,  H02J50/80 ,  H02J50/90

Abstract: A power transmitter is configured for transmission of wireless power, to a wireless receiver, at extended ranges, including a separation gap greater than 8 millimeters (mm). The power transmitter further includes a coil 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 power transmitter further includes a 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. The power transmitter includes at least one magnet, the at least one magnet configured to attract at least one receiver magnet when a power receiver is proximate to a surface associated with the power transmitter.

公开(公告)号：US20240339870A1

公开(公告)日：2024-10-10

申请号：US18579752

申请日：2022-07-14

Applicant: IMPERIAL COLLEGE INNOVATIONS LIMITED

Inventor： Nunzio PUCCI ,  Juan ARTEAGA ,  Paul MITCHESON

IPC: H02J50/60 ,  H02J50/12

CPC classification number: H02J50/60 ,  H02J50/12

Abstract: Disclosed herein are methods and systems of determining a magnetically induced voltage on a coil of a wireless power transmission device. The method comprises supplying DC input power to the wireless power transmission device. It further comprises monitoring a first variable associated with the wireless power transmission device, and monitoring a second variable associated with the wireless power transmission device, wherein at least one of the first and the second variable is derived from a switching waveform. It further comprises determining, based on at least one of the first variable, the second variable, and the relationship between the first variable and the second variable, the magnetically induced voltage on the coil of the wireless power transmission device.

公开(公告)号：US12095288B2

公开(公告)日：2024-09-17

申请号：US18355887

申请日：2023-07-20

Applicant: LG INNOTEK CO., LTD.

Inventor： Yu Ri Park ,  Yong Il Kwon

IPC: H02J50/60 ,  H02J7/02 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80 ,  H02J50/90 ,  H04L5/00 ,  H02J50/40

CPC classification number: H02J50/60 ,  H02J7/02 ,  H02J50/12 ,  H02J50/20 ,  H02J50/80 ,  H02J50/90 ,  H04L5/0055 ,  H02J50/402

Abstract: A wireless power receiver for receiving power from a wireless power transmitter, including a receiving part configured to receive wireless power from the wireless power transmitter; and a main controller in which a foreign object detection status packet including at least one of a reference quality factor and a reference peak frequency is stored, wherein the main controller transmits the foreign object detection status packet to the wireless power transmitter; wherein the main controller receives a NAK response from the wireless power transmitter indicating that the foreign object is present, or receives an ACK response from the wireless power transmitter indicating that the foreign object is not present; and wherein the receiving part receives a first power from the wireless power transmitter according to the received NAK response, or receives a second power greater than the first power from the wireless power transmitter according to the received ACK response.

公开(公告)号：US20240302473A1

公开(公告)日：2024-09-12

申请号：US18669784

申请日：2024-05-21

Applicant: Ossia Inc.

Inventor： Hatem Ibrahim Zeine

IPC: G01S1/02 ,  G01S5/02 ,  G01S5/06 ,  H02J50/20 ,  H02J50/40 ,  H02J50/60 ,  H02J50/90 ,  H04W4/029 ,  H04W4/30 ,  H04W4/33

CPC classification number: G01S1/02 ,  G01S5/0294 ,  G01S5/06 ,  H02J50/20 ,  H02J50/40 ,  H02J50/60 ,  H02J50/90 ,  H04W4/029 ,  H04W4/30 ,  H04W4/33

Abstract: Techniques are described herein for imaging static or semi-static objects in a wireless power delivery environment and tracking non-static objects contained therein. More specifically, embodiments of the present disclosure describe techniques for determining the relative locations and movement of non-static objects in a wireless power delivery environment. Additionally, the techniques describe methods and systems for generation of motion-based maps such as heat (or dwell maps) and flow maps.

公开(公告)号：US12088119B2

公开(公告)日：2024-09-10

申请号：US17340270

申请日：2021-06-07

Applicant: NuVolta Technologies (Hefei) Co., Ltd.

Inventor： Zhijun Luo

IPC: H02J50/60 ,  H02J50/12

CPC classification number: H02J50/60 ,  H02J50/12

Abstract: A method includes wirelessly transferring power through a main coil of a wireless power transfer system, wherein the main coil is connected in series with a main resonant capacitor, and the main coil and the main resonant capacitor form a main resonant tank having a first resonant frequency, applying an excitation including a voltage step to an auxiliary resonant tank comprising an auxiliary coil and an auxiliary resonant capacitor, wherein the auxiliary resonant tank has a second resonant frequency different from the first resonant frequency, calculating a quality factor of the wireless power transfer system based on a plurality of parameters derived from a damped sinusoidal waveform obtained from the auxiliary resonant tank, and determining whether a foreign object is magnetically coupled to the wireless power transfer system based on the quality factor.

公开(公告)号：US12074457B2

公开(公告)日：2024-08-27

申请号：US17969283

申请日：2022-10-19

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Bohwan Choi ,  Jinsu Choi ,  Sungbum Park ,  Kyungmin Lee ,  Sangwook Lee

IPC: H02J50/60 ,  H02J50/12

CPC classification number: H02J50/60 ,  H02J50/12

Abstract: A first electronic device for wirelessly transmitting power may include a power transmission circuit, memory, a pulse generator, a foreign object detection circuit configured to detect a foreign object located in a path in which power is wirelessly transmitted through the power transmission circuit, and a control circuit. The control circuit may be configured to wirelessly transmit power to a second electronic device, based on an alternating current (AC) input voltage applied to the power transmission circuit, generate a trigger signal synchronized with a first time corresponding to a specified voltage of the input voltage through the pulse generator, store an output value of the foreign object detection circuit in the memory based on the trigger signal, the output value being identified at the first time, continuously obtain the output value stored in the memory from the memory during a specified time until before the trigger signal of a next period is received at the memory from the pulse generator, and detect the foreign object based on the output value obtained during the specified time.

公开(公告)号：US12055675B2

公开(公告)日：2024-08-06

申请号：US18314057

申请日：2023-05-08

Applicant: LaserMotive, Inc.

Inventor： Jordin T. Kare ,  Thomas J. Nugent, Jr. ,  David Bashford

IPC: G01V8/22 ,  G01S7/00 ,  G01S7/484 ,  G01S17/04 ,  G01S17/06 ,  G01S17/87 ,  G01S17/88 ,  G01S17/89 ,  H01S5/00 ,  H01S5/062 ,  H01S5/42 ,  H02J50/10 ,  H02J50/30 ,  H02J50/60 ,  H02J50/90 ,  H04B10/114 ,  H04B10/80

CPC classification number: G01V8/22 ,  G01S7/003 ,  G01S7/006 ,  G01S7/484 ,  G01S17/04 ,  G01S17/06 ,  G01S17/87 ,  G01S17/88 ,  G01S17/89 ,  H01S5/005 ,  H01S5/0085 ,  H01S5/06216 ,  H01S5/423 ,  H02J50/10 ,  H02J50/30 ,  H02J50/60 ,  H02J50/90 ,  H04B10/1141 ,  H04B10/807

Abstract: A power beaming system includes a power beam transmitter arranged to transmit the power beam, and a power beam receiver arranged to receive the power beam from the power beam transmitter. A power beam transmission source is arranged to generate a laser light beam for transmission by the power beam transmitter from a first location toward a remote second location. A beam-shaping element shapes the laser light beam, at least one diffusion element uniformly distributes light of the shaped laser light beam, and a projection element illuminates a power beam receiving element of predetermined shape with the shaped laser light beam. At the power beam receiver, a diffusion surface diffuses a portion the power beam specularly reflected from the power beam receiver.

公开(公告)号：US20240258841A1

公开(公告)日：2024-08-01

申请号：US18544692

申请日：2023-12-19

Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA

Inventor： Toshiya HASHIMOTO ,  Masato MAEMURA ,  Shogo TSUGE ,  Ryosuke IKEMURA

IPC: H02J50/80 ,  B60L53/124 ,  H02J50/60

CPC classification number: H02J50/80 ,  B60L53/124 ,  H02J50/60

Abstract: A control device for power feeding during traveling includes a processor. Further, when a living object or a metal foreign object is detected around a primary coil of a power transfer device that transfers power to a power reception device of a vehicle that is traveling, the processor deletes identification information on the primary coil registered in an identification information list of the primary coil, and when the living object or the metal foreign object is not detected, the processor performs compatibility check and service authentication between the power reception device of the vehicle and the power transfer device.