Title:
NON-CONTACT POWER SUPPLY SYSTEM AND POWER TRANSMISSION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/128941
Kind Code:
A1
Abstract:
A non-contact power supply system is provided with: a power transmission device (10) that comprises a power transmission coil (14); and a power reception device (40) that comprises a power reception coil (41). Power is transmitted in a non-contact manner from the power transmission coil (14) to the power reception coil (41), and power is supplied to a battery (44) that is mounted to the power reception device (40). The power transmission device (10) is provided with: a power factor calculation unit (31) that calculates a power factor (cosθ) from the phase difference between the voltage and the current that are supplied to the power transmission coil (14); and a control amount calculation unit (29) that controls the power that is supplied to the power transmission coil (14) on the basis of a power command value (Pbat*) and executes control for limiting the power that is supplied to the power transmission coil (14) when the power factor is equal to or less than a preset threshold power factor. As a result, it is possible to immediately limit transmitted power when the power reception coil (41) is misaligned with respect to the power transmission coil (14).
Inventors:
OKAMOTO TOMOFUMI (JP)
Application Number:
PCT/JP2014/054519
Publication Date:
September 03, 2015
Filing Date:
February 25, 2014
Export Citation:
Assignee:
NISSAN MOTOR (JP)
International Classes:
H02J17/00
Domestic Patent References:
| WO2013153772A1 | 2013-10-17 |
Foreign References:
| JP2013123306A | 2013-06-20 | |||
| JP2014007838A | 2014-01-16 |
Other References:
See also references of EP 3113327A4
Attorney, Agent or Firm:
MIYOSHI, Hidekazu et al. (JP)
Hidekazu Miyoshi (JP)
Hidekazu Miyoshi (JP)
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