Title:
電源装置
Document Type and Number:
Japanese Patent JP4561743
Kind Code:
B2
Abstract:
A cooling fan (30) of a secondary battery (10) and a cooling fan (40) of a DC/DC converter (20) are arranged in parallel to share the same air discharge path (80). A temperature sensor (12) on an air intake side and a temperature sensor (14) on an air discharge side are attached to the secondary battery (10). When the cooling fan (30) is in failure, a temperature deviation between the air intake side and the air discharge side in the secondary battery (10) increases because a backflow component (95) of a discharge air (90) is generated through the discharge path (80) as the cooling fan (40) operates. Based on this phenomenon, when operation commands for both of the cooling fans (30, 40) are issued, the control circuit (50) senses a failure in the cooling fan (30) by monitoring the temperature difference between temperatures (Tb1, Tb2) detected by the temperature sensors (12, 14). Failure detection is thereby possible without providing a sensor at each of the cooling fans.
Inventors:
Nobuaki Kitani
Junta Katayama
Junta Katayama
Application Number:
JP2006532605A
Publication Date:
October 13, 2010
Filing Date:
August 19, 2005
Export Citation:
Assignee:
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
H01M10/60; B60L3/00; H01M10/613; H01M10/625; H01M10/633; H01M10/6563; H02H5/04; H02J7/00
Domestic Patent References:
| JP2003112531A | 2003-04-15 | |||
| JP2003178815A | 2003-06-27 | |||
| JP2002343449A | 2002-11-29 | |||
| JP2001210389A | 2001-08-03 |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Tadashi Muto
Toshio Morita
Tadashi Muto