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1.发明公开
公开(公告)号：EP3809431A1
公开(公告)日：2021-04-21
申请号：EP19930245.6
申请日：2019-12-26
发明人： ZHU, Yongfa , CHEN, Xiaowei , ZENG, Zhiqiang
摘要： This application discloses a coil winding, and belongs to the field of wireless charging technologies. The coil winding includes: an insulation layer, a first part of coils located on one side of the insulation layer, and a second part of coils located on the other side of the insulation layer. The first part of the coil comprises a first segment of conducting wire, the second part of the coil comprises a second segment of conducting wire. The first segment of conducting wire and the second segment of conducting wire each are provided with N cutting openings. The first segment of conducting wire is divided into N+1 first sub conducting wires by the N cutting openings provided on the first segment of conducting wire. The second segment of conducting wire is divided into N+1 second sub conducting wires by the N cutting openings provided on the second segment of conducting wire. The N+1 first sub conducting wires and the N+1 second sub conducting wires are electrically connected in a one-to-one manner, to form N+1 pairs of sub conducting wires. At least one crossover structure is formed in the N+1 pairs of sub conducting wires. In this application, a circulating current loss in the coil winding can be reduced, and wireless charging efficiency can be improved. In addition, this application further discloses a corresponding coil module, a wireless charging transmitting apparatus, a wireless charging receiving apparatus, a wireless charging system, and a terminal.
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2.发明公开
公开(公告)号：EP3806117A1
公开(公告)日：2021-04-14
申请号：EP19847844.8
申请日：2019-05-30
发明人： PEI, Changsheng , ZHU, Yongfa , ZENG, Zhiqiang
摘要： This application discloses a coil module, a wireless charging transmitting apparatus, a wireless charging receiving apparatus, a wireless charging system, and a terminal. The module includes a first planar coil winding and a second planar coil winding. A first coil of the first planar coil winding includes a first outer side part and a first inner side part. An end part of the first coil of the first planar coil winding includes an end part of the first outer side part and an end part of the first inner side part. A first coil of the second planar coil winding includes a second outer side part and a second inner side part. An end part of the first coil of the second planar coil winding includes an end part of the second outer side part and an end part of the second inner side part. The end part of the first outer side part is connected to the end part of the second inner side part. The end part of the second outer side part is connected to the end part of the first inner side part. This application can effectively reduce a circulating current loss in the first planar coil winding and the second planar coil winding, and improve wireless charging efficiency of the coil module.
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公开(公告)号：EP3706285A1
公开(公告)日：2020-09-09
申请号：EP18881348.9
申请日：2018-07-18
发明人： PEI, Changsheng , ZENG, Zhiqiang , ZHU, Yongfa
摘要： This application discloses a wireless charging method, a device, and a wireless charging system. The wireless charging system may include a transmitter and a receiver; the transmitter includes a transmitter coil and a first series matching capacitor, the transmitter coil is connected to the first series matching capacitor in series to form a first oscillation circuit, and the first oscillation circuit is configured to transfer power to the receiver; and the receiver includes a receiver coil and a second series matching capacitor, the receiver coil is connected to the second series matching capacitor in series to form a second oscillation circuit, and the second oscillation circuit is configured to receive the power transferred by the first oscillation circuit. Implementation of embodiments of this application can reduce an electrical energy loss in the receiver, and improve charging efficiency of the receiver.
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公开(公告)号：EP4030586A1
公开(公告)日：2022-07-20
申请号：EP20869667.4
申请日：2020-06-16
发明人： FENG, Shaojie , ZENG, Zhiqiang , ZHU, Yongfa , QIU, Jin
IPC分类号： H02J50/05
摘要： This application discloses a wireless charging system, and pertains to the field of wireless charging technologies. The system includes: a transmit apparatus and a receive apparatus; the transmit apparatus includes an inverter circuit and two transmit electrodes, an input terminal of the inverter circuit is connected to a direct-current power supply, and two output terminals of the inverter circuit are connected to the two transmit electrodes respectively; the receive apparatus includes two receive electrodes and a rectifier circuit, two input terminals of the rectifier circuit are connected to the two receive electrodes respectively, and an output terminal of the rectifier circuit is connected to a load. In this application, one transmit electrode of the two transmit electrodes is coupled to one receive electrode of the two receive electrodes through a first transmission medium whose electric conductivity is greater than electric conductivity of air, so as to increase equivalent coupling capacitance between the transmit electrode and the receive electrode, thereby effectively increasing a wireless charging transmission distance and improving flexibility of wireless charging.
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公开(公告)号：EP4243267A1
公开(公告)日：2023-09-13
申请号：EP21896345.2
申请日：2021-07-19
发明人： ZHU, Yongfa , ZENG, Zhiqiang , CAI, Jinsen , YANG, Heqian , CHEN, Xiaowei , DING, Tao
IPC分类号： H02M3/158
摘要： This application provides a conversion circuit, a switching power supply, and an electronic device. The conversion circuit mainly includes a first branch circuit and a second branch circuit. Input sides of the first branch circuit and the second branch circuit are connected in series, and output sides of the first branch circuit and the second branch circuit are connected in parallel; or input sides of the first branch circuit and the second branch circuit are connected in parallel, and output sides of the first branch circuit and the second branch circuit are connected in series. This implementation helps improve efficiency of the conversion circuit. When an inductor is disposed in the conversion circuit, a size of the inductor is further reduced, to improve integration.
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公开(公告)号：EP3809430A1
公开(公告)日：2021-04-21
申请号：EP19917242.0
申请日：2019-10-10
发明人： ZHU, Yongfa , CHEN, Xiaowei , DING, Tao , ZENG, Zhiqiang , YANG, Chang , HE, Zhaodong
IPC分类号： H01F27/28
摘要： This application discloses a coil module, a wireless charging transmitting apparatus, a wireless charging receiving apparatus, a wireless charging system, and a mobile terminal. The coil module includes a first planar coil winding, and the first planar coil winding includes a plurality of turns of coils; at least one turn of first coil in the plurality of turns of coils of the first planar coil winding includes at least one first cutting opening, and the first cutting opening divides the first coil into a first outer side part and a first inner side part along an extension direction of the coil; the first outer side part has a first connection end, and the first inner side part has a second connection end; and a first target side part includes a first cutting groove, the first target side part is at least one of the first outer side part and the first inner side part, an extension direction of the first cutting groove is the same as an extension direction of the first target side part, and a width of a single first cutting groove is less than or equal to a width of a single first cutting opening. An eddy current path on the first target side part is cut off to reduce an area through which a magnetic flux passes, so as to reduce a magnetic flux. In this way, an eddy current loss and a circulating current loss are reduced, and charging efficiency is increased.
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公开(公告)号：EP3761329A1
公开(公告)日：2021-01-06
申请号：EP19774272.9
申请日：2019-01-07
发明人： PEI, Changsheng , ZHU, Yongfa , ZENG, Zhiqiang , CHEN, Xiaowei
IPC分类号： H01F38/14
摘要： This application belongs to the field of wireless charging technologies, and discloses a coil module. The module includes: an insulation layer, a first planar coil winding, and a second planar coil winding, where at least one turn of coil of the first planar coil winding includes a first portion, a second portion, and a first connection part, and at least one turn of coil of the second planar coil winding includes a third portion, a fourth portion, and a second connection part. In this application, the first connector is configured to connect an outer side part of the first portion and an inner side part of the second portion, the second connector is configured to connect an inner side part of the third portion and an outer side part of the fourth portion, and there is an overlap between a projection of the first connector on a plane of the insulation layer and a projection of the second connector on the plane of the insulation layer. Correspondingly, this application further discloses a wireless charging transmitting apparatus, a receiving apparatus, and a system in which the coil module is used, and a terminal in which the wireless charging system is used.
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