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11. 发明授权

EP3618227B1 WIRELESS CHARGING OF MULTIPLE RECHARGEABLE DEVICES 有权
公开(公告)号：EP3618227B1
公开(公告)日：2024-01-03
申请号：EP19193666.5
申请日：2019-08-27
发明人： BADSTUE, Søren Christian
IPC分类号： H02J50/40 , H02J50/12 , H02J50/80 , H02J7/02 , H04R25/00 , H02J7/00

12. 发明公开

EP4293873A1 POWER TRANSMISSION DEVICE, CONTROL METHOD OF POWER TRANSMISSION DEVICE, AND PROGRAM 审中-公开
公开(公告)号：EP4293873A1
公开(公告)日：2023-12-20
申请号：EP23173985.5
申请日：2023-05-17
申请人： CANON KABUSHIKI KAISHA
发明人： HIRAMATSU, Tomoki
IPC分类号： H02J50/12 , H02J50/40 , H02J50/60 , H02J50/90 , H02J7/02
摘要： Provided is a power transmission device including: a plurality of power transmission coils; a power transmission means for wirelessly transmitting power to a power receiving device using at least one of the plurality of power transmission coils; a detection means for performing a process of detecting an object using at least one of the plurality of power transmission coils; and a reception means for receiving a signal from the power receiving device, wherein, in a case where the reception means receives a request to stop power transmission from the power receiving device, the detection means performs, in a period of stop of a power transmission, a process of detecting an object using a power transmission coil which was used for the power transmission.

13. 发明公开

EP4239841A3 METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR 审中-实审
公开(公告)号：EP4239841A3
公开(公告)日：2023-11-08
申请号：EP23186849.8
申请日：2017-08-23
申请人： LG INNOTEK CO., LTD.
发明人： PARK, Jae Hee
IPC分类号： H02J50/12 , H02J50/60 , H02J50/80 , H02J50/40 , H02J50/90 , H02J50/20
摘要： The present invention relates to a method for detecting foreign material, and an apparatus and a system therefor, and a method for detecting foreign material in a wireless power transmitter, according to one embodiment of the present invention, comprises the steps of: measuring a quality factor value, which corresponds to a reference operation frequency, when an object is sensed; searching for a current peak frequency having a maximum quality factor value within an operation frequency band; receiving, form a wireless power receiver, a foreign material detection state packet including information on a reference peak frequency; correcting the measured quality factor value by using a difference value between the current peak frequency and the reference peak frequency; and determining whether the foreign material exists by comparing the corrected quality factor value with a predetermined quality factor threshold value. Therefore, the present invention has an advantage of enabling foreign material to be more effectively and accurately detected.

14. 发明公开

EP4236027A3 METHOD FOR DETECTING FOREIGN MATERIAL, AND APPARATUS AND SYSTEM THEREFOR 审中-实审
公开(公告)号：EP4236027A3
公开(公告)日：2023-10-11
申请号：EP23178399.4
申请日：2017-08-23
申请人： LG INNOTEK CO., LTD.
发明人： PARK, Jae Hee
IPC分类号： H02J50/12 , H02J50/60 , H02J50/80 , H02J50/40 , H02J50/90 , H02J50/20
摘要： The present invention relates to a method for detecting foreign material, and an apparatus and a system therefor, and a method for detecting foreign material in a wireless power transmitter, according to one embodiment of the present invention, comprises the steps of: measuring a quality factor value, which corresponds to a reference operation frequency, when an object is sensed; searching for a current peak frequency having a maximum quality factor value within an operation frequency band; receiving, form a wireless power receiver, a foreign material detection state packet including information on a reference peak frequency; correcting the measured quality factor value by using a difference value between the current peak frequency and the reference peak frequency; and determining whether the foreign material exists by comparing the corrected quality factor value with a predetermined quality factor threshold value. Therefore, the present invention has an advantage of enabling foreign material to be more effectively and accurately detected.

15. 发明公开

EP4222838A1 UNIVERSAL WIRELESS CHARGING OF POWER TOOL BATTERY PACKS 审中-实审
公开(公告)号：EP4222838A1
公开(公告)日：2023-08-09
申请号：EP21876337.3
申请日：2021-09-29
申请人： Milwaukee Electric Tool Corporation
发明人： FIELDBINDER, Douglas, R. , SEMON, Catherine, K.
IPC分类号： H02J50/40 , H02J50/80 , H02J50/10 , H02J7/02 , H02J7/34 , H01M50/20 , H04B17/318

16. 发明公开

EP4220895A1 ELECTRONIC APPARATUS FOR TRANSMITTING WIRELESS POWER AND WIRELESS CHARGING METHOD USING SAME 审中-实审
公开(公告)号：EP4220895A1
公开(公告)日：2023-08-02
申请号：EP22746119.1
申请日：2022-01-13
申请人： Samsung Electronics Co., Ltd.
发明人： CHUNG, Hyungkoo , KIM, Kihyun , KIM, Dongzo , KIM, Jihye , NOH, Yunjeong , SON, Keyic , YU, Taehyeon , LEE, Kyungmin , HA, Mincheol
IPC分类号： H02J50/90 , H02J50/40 , H02J50/80 , H01F38/14 , H04L1/20
摘要： According to various embodiments of the present disclosure, a power transmission apparatus comprises a power transfer unit including a plurality of coils, and a processor operatively connected to the power transfer unit, wherein the processor may be configured to: wirelessly transmit power to a power reception apparatus by using at least one coil of the plurality of coils; identify a specified condition indicating the state of resetting a coil through which to transmit power related to charging of the power reception apparatus; transmit a coil selection packet to the power reception apparatus, on the basis that the specified condition is satisfied; identify a signal strength packet (SSP) value of at least one other coil adjacent to the at least one coil; and wirelessly transmit power to the power reception apparatus by using a coil having the largest SSP value between an SSP value of the at least one coil and the SSP value of the at least one other coil. Various embodiments other than those disclosed in the present document are also possible.

17. 发明授权

EP4138266B1 CHARGER WITH TWO COILS FOR WIRELESS CHARGING 有权转让
公开(公告)号：EP4138266B1
公开(公告)日：2023-08-02
申请号：EP21192274.5
申请日：2021-08-20
发明人： Ellwood, Stephen
IPC分类号： H02J50/12 , H02J50/00 , H02J7/02 , H02J50/40

18. 发明公开

EP4211775A1 INDUCTIVE POWER AND COMMUNICATIONS BUS 审中-实审
公开(公告)号：EP4211775A1
公开(公告)日：2023-07-19
申请号：EP21865419.2
申请日：2021-09-08
申请人： Bitstrata Systems Inc.
发明人： MEIER, Ian Robert , LOCKERBIE, Michael David
IPC分类号： H02J50/10 , A01F25/16 , G01K1/024 , G01N37/00 , G08C17/04 , H02J50/40 , H04B5/00

19. 发明公开

EP4210200A1 TRANSMITTING TERMINAL SUPPORTING WIRELESS CHARGING OF MULTIPLE DEVICES, CHARGING BASE AND SYSTEM 审中-实审
公开(公告)号：EP4210200A1
公开(公告)日：2023-07-12
申请号：EP20957081.1
申请日：2020-10-15
申请人： Huawei Digital Power Technologies Co., Ltd.
发明人： LI, Yuechao , CAI, Bing
IPC分类号： H02J50/40 , H02J7/00
摘要： This application discloses a transmit end supporting multi-device wireless charging, a charging base, and a system, to support N-channel wireless charging, where N is an integer greater than or equal to 2. The transmit end includes N half-bridge inverter circuits, a multi-coil gating matrix, and a multi-coil module. Input terminals of the N half-bridge inverter circuits are connected to corresponding direct currents, and output terminals of the N half-bridge inverter circuits are connected to input terminals of the multi-coil gating matrix. The multi-coil gating matrix includes a plurality of switching switches, configured to respectively connect the output terminals of the N half-bridge inverter circuits to corresponding transmit coils in the multi-coil module. Compared with a full-bridge inverter circuit, in the half-bridge inverter circuit, a quantity of bridge arms is reduced by 1, and a quantity of switching transistors is reduced by half. A quantity of switching transistors in a next-stage gating matrix may also be reduced by half correspondingly. When the quantity of switching transistors is reduced, a quantity of corresponding control signals is also reduced. Therefore, both hardware control and software control are simplified, thereby reducing a quantity of hardware, and reducing a size of a circuit board. After the quantity of control signals is reduced, control reliability can be improved.

20. 发明公开

EP4207556A1 WIRELESS CHARGING SYSTEM 审中-实审
公开(公告)号：EP4207556A1
公开(公告)日：2023-07-05
申请号：EP22848003.4
申请日：2022-05-26
申请人： Honor Device Co., Ltd.
发明人： WU, Yuan , ZHANG, Wei , WANG, Chao , ZHAO, Lilie , ZHANG, Youjun
IPC分类号： H02J50/12 , H02J7/00 , H02J50/40
摘要： This application discloses a wireless charging system, and relates to the field of terminal technologies. The wireless charging system has a function of wirelessly charging an electronic stylus while accommodating the electronic stylus, so that integration of accommodation and wireless charging is implemented. In addition, a length of a wireless charging link is reduced, and a quantity of chips used in the link is reduced, thereby improving charging efficiency and reliability and reducing costs. The wireless charging system includes a tablet computer, a wireless keyboard, and the electronic stylus. The wireless keyboard includes a keyboard body, a support, and a connection portion. The connection portion includes an accommodation cavity provided with an opening at one end. A first sending apparatus is disposed in the tablet computer. A first receiving apparatus is disposed in the keyboard body. A second sending apparatus is disposed in the accommodation cavity. The first receiving apparatus receives an alternating current signal sent by the first sending apparatus, and then directly transmits the alternating current signal to the second sending apparatus. The second sending apparatus is configured to wirelessly charge the electronic stylus accommodated in the accommodation cavity.

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