公开(公告)号：US09815380B2

公开(公告)日：2017-11-14

申请号：US14779115

申请日：2014-03-24

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Masayoshi Koizumi ,  Osamu Ohashi ,  Tsuyoshi Nishio ,  Noriaki Asaoka

IPC: H02J7/00 ,  B60L11/18 ,  H02J7/02 ,  H01M10/42 ,  H02J5/00 ,  H02J50/10 ,  H02J50/80

CPC classification number: B60L11/182 ,  B60L11/1835 ,  B60L2270/147 ,  H01M10/42 ,  H01M2250/20 ,  H02J5/005 ,  H02J7/025 ,  H02J50/05 ,  H02J50/10 ,  H02J50/12 ,  H02J50/80 ,  Y02T10/7005 ,  Y02T10/7072 ,  Y02T90/12 ,  Y02T90/121 ,  Y02T90/122 ,  Y02T90/125 ,  Y02T90/14 ,  Y02T90/32

Abstract: Power supply device is provided with the following: a power supply unit (121) that includes a spiral coil or a solenoid coil; a frequency characteristic acquisition unit (211) that acquires the frequency characteristics of the efficiency of the supply of power from the power supply unit to the power receiving device; a peak determining unit (212) that determines peaks in the frequency characteristics of the efficiency of power supply; and a drive frequency determination unit (213) that, if two peaks have been found, determines as the drive frequency used for supplying power a frequency near the frequency that is the lower of the frequencies of the two peaks, with the lower frequency being given priority over a frequency near the higher frequency.