Title:
VOLTAGE MEASUREMENT DEVICE, VOLTAGE MEASUREMENT SYSTEM
Document Type and Number:
WIPO Patent Application WO/2017/094612
Kind Code:
A1
Abstract:
The present invention avoids electric power shortages that occur during vehicle travel as a result of the measurement of the open-state voltage of an onboard power storage device. A voltage measurement device that comprises a relay, a first voltage measurement part, a second voltage measurement part, a power supply circuit, and a control circuit. The power source circuit is indirectly connected to a direct-current bus. The first voltage measurement part measures a first voltage, which is applied to the power supply circuit. The relay is interposed between the direct-current bus and a power storage device. A first end of the relay is connected to the direct-current bus, and a second end of the relay is connected to the power storage device. The control circuit receives operating power from the power supply circuit and thereby controls the opening/closing of the relay. When the first voltage is at or below a first threshold value, the control circuit closes the first end and the second end. The second voltage measurement part measures a second voltage, which is applied to the second end, at least when the relay is open.
Inventors:
YASUNORI HIROMICHI (JP)
Application Number:
PCT/JP2016/084957
Publication Date:
June 08, 2017
Filing Date:
November 25, 2016
Export Citation:
Assignee:
AUTONETWORKS TECHNOLOGIES LTD (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
SUMITOMO WIRING SYSTEMS (JP)
SUMITOMO ELECTRIC INDUSTRIES (JP)
International Classes:
B60R16/04; B60R16/033; G01R19/00; H02J7/14
Foreign References:
| JPS56157643A | 1981-12-04 | |||
| JP2005106747A | 2005-04-21 | |||
| JP2014201234A | 2014-10-27 | |||
| JP2015211576A | 2015-11-24 | |||
| JP2004338577A | 2004-12-02 |
Attorney, Agent or Firm:
YOSHITAKE Hidetoshi et al. (JP)
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