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1. (WO2019031748) FOREIGN OBJECT DETECTING METHOD FOR WIRELESS CHARGING AND DEVICE THEREFOR
Latest bibliographic data on file with the International BureauSubmit observation

Pub. No.: WO/2019/031748 International Application No.: PCT/KR2018/008625
Publication Date: 14.02.2019 International Filing Date: 30.07.2018
IPC:
H02J 50/60 (2016.01) ,H02J 50/80 (2016.01) ,G01R 23/02 (2006.01) ,G01R 27/26 (2006.01)
[IPC code unknown for H02J 50/60][IPC code unknown for H02J 50/80]
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
23
Arrangements for measuring frequencies; Arrangements for analysing frequency spectra
02
Arrangements for measuring frequency, e.g. pulse repetition rate; Arrangements for measuring period of current or voltage
G PHYSICS
01
MEASURING; TESTING
R
MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
27
Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
02
Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
26
Measuring inductance or capacitance; Measuring quality factor, e.g. by using the resonance method; Measuring loss factor; Measuring dielectric constants
Applicants:
엘지이노텍(주) LG INNOTEK CO., LTD. [KR/KR]; 서울시 중구 후암로 98 98, Huam-ro Jung-gu Seoul 04637, KR
Inventors:
박재희 PARK, Jae Hee; KR
권용일 KWON, Yong Il; KR
Agent:
이승찬 LEE, Seung Chan; KR
Priority Data:
10-2017-009980407.08.2017KR
Title (EN) FOREIGN OBJECT DETECTING METHOD FOR WIRELESS CHARGING AND DEVICE THEREFOR
(FR) PROCÉDÉ DE DÉTECTION CORPS ÉTRANGER DESTINÉ À UNE CHARGE SANS FIL ET DISPOSITIF ASSOCIÉ
(KO) 무선 충전을 위한 이물질 검출 방법 및 그를 위한 장치
Abstract:
(EN) The present invention relates to a foreign object detecting method, and a device and system therefor. A method for detecting a foreign object in a wireless power transmitter according to an embodiment of the present invention may comprise the steps of: when an object placed in a charging area is sensed, measuring quality factor values within an operating frequency band to find a measured peak frequency at which the maximum quality factor value is measured; storing the measured peak frequency and the measured quality factor value corresponding to the measured peak frequency; transmitting information on the type of transmitter to an identified wireless power receiver; receiving a reference quality factor value and a reference peak frequency corresponding to the type of transmitter; calculating a measured inductance by using the measured peak frequency; calculating a reference inductance by using the reference peak frequency; and detecting a foreign object by using at least one of the reference quality factor value, the reference peak frequency, and the reference inductance.
(FR) La présente invention concerne un procédé de détection de corps étranger, ainsi qu'un dispositif et un système associés. Un procédé de détection de corps étranger dans un transmetteur d'énergie sans fil selon un mode de réalisation de la présente invention peut comprendre les étapes suivantes consistant : lorsqu'un objet placé dans une zone de charge est détecté, à mesurer des valeurs de facteur de qualité à l'intérieur d'une bande de fréquences de fonctionnement pour trouver une fréquence de crête mesurée à laquelle la valeur de facteur de qualité maximale est mesurée; à stocker la fréquence de crête mesurée et la valeur de facteur de qualité mesurée correspondant à la fréquence de crête mesurée; à transmettre des informations sur le type de transmetteur à un récepteur d'énergie sans fil identifié; à recevoir une valeur de facteur de qualité de référence et une fréquence de crête de référence correspondant au type de transmetteur; à calculer une inductance mesurée à l'aide de la fréquence de crête mesurée; à calculer une inductance de référence à l'aide de la fréquence de crête de référence; et à détecter un corps étranger à l'aide de la valeur de facteur de qualité de référence et/ou de la fréquence de crête de référence et/ou de l'inductance de référence.
(KO) 본 발명은 이물질 검출 방법 및 그를 위한 장치 및 시스템에 관한 것으로서, 본 발명의 일 실시예에 따른 무선 전력 송신기에서의 이물질 검출 방법은 충전 영역에 배치된 물체를 감지하면, 동작 주파수 대역 내 품질 인자 값을 측정하여 상기 품질 인자 값이 최대인 측정 피크 주파수를 탐색하는 단계, 상기 측정 피크 주파수 및 상기 측정 피크 주파수에 대응되는 측정 품질 인자 값을 저장하는 단계, 식별된 무선 전력 수신기에 송신기 타입에 관한 정보를 전송하는 단계, 상기 송신기 타입에 대응되는 기준 품질 인자 값 및 기준 피크 주파수를 수신하는 단계, 상기 측정 피크 주파수를 이용하여 측정 인덕턴스를 계산하는 단계, 상기 기준 피크 주파수를 이용하여 기준 인덕턴스를 계산하는 단계 및 상기 기준 품질 인자 값, 상기 기준 피크 주파수 및 상기 기준 인덕턴스 중 적어도 하나를 이용하여 이물질을 검출하는 단계를 포함할 수 있다.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Korean (KO)
Filing Language: Korean (KO)