公开(公告)号：US11770021B2

公开(公告)日：2023-09-26

申请号：US17682361

申请日：2022-02-28

Applicant: WITS Co., Ltd.

Inventor： Du Hyun Song ,  Seung Jae Baeck ,  Chun Su Yoon ,  Jeong Yub Yang ,  Dong Hyun Kim ,  Yong Gu Yoon ,  Ji Hoon Yeom

IPC: H02J50/00 ,  H02J50/10 ,  H01F27/24 ,  H01F27/28 ,  H04B5/00

CPC classification number: H02J50/005 ,  H01F27/24 ,  H01F27/2804 ,  H02J50/10 ,  H04B5/0037

Abstract: Disclosed is a coil module that receives or transmits electric power or signals wireless by using an electromagnetic field, the coil module including a board, a coil provided on at least one surface of the board to be rotated in one direction, and a magnetic part covering at least a portion of the coil while directly contacting a surface of the coil, and that acts as an electromagnetic booster that enhances an intensity of the electromagnetic field generated on the surface of the coil, and the magnetic part decrease, among a skin effect and a proximity effect of an eddy current generated in the coil, the proximity effect by isolating electric power in a gap of the coil that is rotated in the one direction.

公开(公告)号：US11626241B2

公开(公告)日：2023-04-11

申请号：US16274435

申请日：2019-02-13

Applicant: WITS Co., Ltd.

Inventor： Ha Ryong Hong ,  Ki Won Chang ,  Geun Young Park

IPC: H01F27/28 ,  H01F27/29 ,  H01F41/04 ,  H01F27/32 ,  H04B5/00 ,  H01F38/14 ,  H02J7/02

Abstract: A coil assembly includes: a connection substrate including a coil pad and an accommodating portion disposed in a position adjacent to the coil pad; and a coil portion including a spiral wiring and an end portion bonded to the coil pad, wherein at least a portion of the coil portion is disposed in the accommodating portion.

公开(公告)号：US11025094B2

公开(公告)日：2021-06-01

申请号：US15092093

申请日：2016-04-06

Applicant: WITS Co., Ltd.

Inventor： In Wha Jeong ,  Jae Suk Sung ,  Hugh Kim

IPC: H02J50/12 ,  H02J7/00 ,  H02J7/02

Abstract: A wireless power receiving device includes a first resonance circuit configured to have a first resonance frequency; a second resonance circuit configured to have a second resonance frequency lower than the first resonance frequency; and a rectifying circuit connected to the first resonance circuit and the second resonance circuit without a switch and configured to rectify power received through the first resonance circuit and the second resonance circuit.

公开(公告)号：US10692648B2

公开(公告)日：2020-06-23

申请号：US15826299

申请日：2017-11-29

Applicant: WITS Co., Ltd.

Inventor： Seung Hee Oh ,  Doo Ho Park ,  Tae Jun Choi ,  Sung Nam Cho ,  Chang Hak Choi ,  Jung Young Cho

IPC: H01F27/36 ,  H01F27/34 ,  H02J7/02 ,  H01F27/28 ,  H02J50/12 ,  H02J50/10 ,  H02J50/70

Abstract: A magnetic field shielding structure includes a magnetic layer and a resonance reactive shielding circuit including a capacitor and a conductor connected to the capacitor and having a loop form. At least a portion of the magnetic layer overlaps an area surrounded by the conductor in a thickness direction of the magnetic layer.

公开(公告)号：US10547098B2

公开(公告)日：2020-01-28

申请号：US15800887

申请日：2017-11-01

Applicant: WITS Co., Ltd.

Inventor： Sang Beom Lee ,  Hyung Wook Cho ,  Jun Seung Yi ,  Yu Jin Lee ,  Jae Suk Sung ,  Dae Ki Lim ,  Seung Hun Ryu ,  Ki Won Chang ,  Jae Hyoung Cho ,  Si Hyung Kim

IPC: H01Q1/36 ,  H01Q7/00 ,  H01Q1/22 ,  H01P7/00 ,  H01F38/14 ,  H04B5/00 ,  H01Q25/00

Abstract: A double loop antenna includes a source loop comprising: a spiral-shaped conductive source coil pattern disposed on a top surface of a board, and a source capacitor pattern comprising symmetrical conductive patterns disposed on the top surface and a bottom surface of the board; and a resonance loop comprising: a spiral-shaped conductive resonance coil pattern disposed on the bottom surface of the board, and a resonance capacitor pattern comprising symmetrical conductive patterns disposed on the top surface and the bottom surface of the board, wherein the source coil pattern and the resonance coil pattern are formed on different surfaces of the board.

公开(公告)号：US10541562B2

公开(公告)日：2020-01-21

申请号：US15155549

申请日：2016-05-16

Applicant: WITS Co., Ltd.

Inventor： Sang Ho Cho

IPC: H02J50/12 ,  H02J50/80 ,  H02J7/02 ,  H04B5/00

Abstract: A wireless power transmitter includes a resonator including a variable resonator; an inverter configured to operate the resonator; and, a controller configured to adjust the variable resonator in response to a change in a level of power input to the inverter.

公开(公告)号：US10511095B2

公开(公告)日：2019-12-17

申请号：US15806651

申请日：2017-11-08

Applicant: WITS Co., Ltd.

Inventor： Chang Hee Lee ,  Young Seung Roh ,  Jae Sun Won ,  Hee Seung Kim ,  Hyo Jung Yoon ,  Gie Hyoun Kweon

IPC: H01Q1/00 ,  H01Q7/00 ,  H01Q1/38 ,  H01Q7/06 ,  H01Q9/27

Abstract: An antenna module includes a coil part including a second antenna wiring formed on an insulating substrate in a spiral shape and a first antenna wiring disposed in an internal region of the second antenna wiring, and a magnetic part including a first magnetic part disposed in the internal region of a first surface of the insulating substrate and a second magnetic part disposed on a second surface of the insulating substrate.

公开(公告)号：US10469133B2

公开(公告)日：2019-11-05

申请号：US15785955

申请日：2017-10-17

Applicant: WITS Co., Ltd.

Inventor： Dae Ung Ahn ,  Hyung Wook Cho ,  Jun Seung Yi ,  Yu Jin Lee ,  Seung Hun Ryu ,  Sang Beom Lee ,  Dae Ki Lim ,  Jae Hyoung Cho ,  Si Hyung Kim

IPC: H01Q1/24 ,  H01Q7/00 ,  H04B5/00 ,  H01Q19/28 ,  H01Q1/22 ,  H01F5/00 ,  H01F27/28 ,  H01F38/14

Abstract: An antenna device includes a first wiring may include a spiral shape forming an empty region therein, and a second wiring disposed inside or outside of the first wiring. The second wiring is disposed to be spaced apart from the first wiring, and includes a first ring-shaped wiring and a second ring-shaped wiring, which are concentric to each other.

公开(公告)号：US20240213802A1

公开(公告)日：2024-06-27

申请号：US18186616

申请日：2023-03-20

Applicant: WITS Co., Ltd.

Inventor： Du Hyun SONG ,  Chun Su YOON ,  Dong Hyun KIM ,  Seung Jae BAECK ,  Yong Gu YOON

IPC: H02J50/00 ,  H01F27/28 ,  H01F27/34 ,  H01F38/14 ,  H01F41/04 ,  H02J50/10

CPC classification number: H02J50/005 ,  H01F27/28 ,  H01F27/34 ,  H01F38/14 ,  H01F41/04 ,  H02J50/10

Abstract: Disclosed is a wireless charging coil module for wirelessly receiving or transmitting electric power or signals by using electromagnetic fields including a base, and a coil part including a coil provided on one surface of the base to be rotated in one direction. The coil includes a rolled thin plate of a conductive metal disposed on the one surface of the base, and a side part of the coil has a shape, a central portion of which protrudes or is recessed.

公开(公告)号：US10892647B2

公开(公告)日：2021-01-12

申请号：US16136648

申请日：2018-09-20

Applicant: WITS Co., Ltd.

Inventor： Se Joo Kim ,  Jung Woo Choi ,  Tae Seok Ko ,  Byoung Woo Ryu

IPC: H02J50/12 ,  H02J50/80 ,  H02J50/05

Abstract: A wireless power transmitter having a data transmission and reception capability is disclosed. The wireless power transmitter includes a main coil to transmit power, an inverter to apply an alternating current (AC) signal to the main coil, a communication module to output a transmission signal including transmission data to be wirelessly transmitted the wireless power transmitter, and/or receive a reception signal including received data wirelessly received by the wireless power transmitter, a first connecting circuitry to prevent a power signal of the main coil from being input to the communication module, and the auxiliary coil to connect to the main coil and connected to the first connecting circuitry. The main coil or the auxiliary coil may be configured to transmit the transmission data and receive the reception signal, and the auxiliary coil may be wiredly connected to the main coil or not wiredly connected to the main coil.