(19)
(11) EP 2 555 375 A8

(12) CORRECTED EUROPEAN PATENT APPLICATION
published in accordance with Art. 153(4) EPC

(15) Correction information:
Corrected version no 1 (W1 A1)

(48) Corrigendum issued on:
27.03.2013 Bulletin 2013/13

(43) Date of publication:
06.02.2013 Bulletin 2013/06

(21) Application number: 10848974.1

(22) Date of filing: 27.05.2010
(51) International Patent Classification (IPC): 
H02J 17/00(2006.01)
B60L 11/18(2006.01)
(86) International application number:
PCT/JP2010/058974
(87) International publication number:
WO 2011/121800 (06.10.2011 Gazette 2011/40)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

(30) Priority: 30.03.2010 JP 2010078236

(71) Applicant: TOYOTA JIDOSHA KABUSHIKI KAISHA
Toyota-shi, Aichi-ken, 471-8571 (JP)

(72) Inventors:
  • SAKAKIBARA, Hiroyuki
    Nishio-shi Aichi 445-0012 (JP)
  • ICHIKAWA, Shinji
    Toyota-shi, Aichi-ken, 471-8571 (JP)

(74) Representative: Kuhnen, Rainer K. 
Kuhnen & Wacker Patent- und Rechtsanwaltsbüro Prinz-Ludwig-Strasse 40A
85354 Freising
85354 Freising (DE)

   


(54) VOLTAGE DETECTOR, ABNORMALITY DETECTION DEVICE, NON-CONTACT POWER TRANSFER DEVICE, NON-CONTACT POWER RECEIVER DEVICE, AND VEHICLE


(57) A voltage detector for detecting a voltage generated in a second resonant coil (110; 240) that is disposed to face a first resonant coil (240; 110) and that performs at least one of electric power transmission and electric power reception to and from the first resonant coil (240; 110) in a contactless manner by means of electromagnetic resonance includes: a first high-impedance element (510) having one end connected to one end of the second resonant coil (110; 240); a second high-impedance element (520) having one end connected to the other end of the second resonant coil (110; 240); a low-impedance element (550) connected between the other end of the first high-impedance element (510) and the other end of the second high-impedance element (520) and having an impedance smaller than each of those of the first and second high-impedance elements (510, 520); and an output terminal (560) for outputting a signal associated with a voltage applied across the low-impedance element (550). In this way, in the contactless power supply system employing the resonance method, the malfunction in the resonant coil is detected while suppressing an influence over the resonance state between the resonant coils and suppressing increase of cost.