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Patent Searching and Data


Title:
ELECTRIC POWER SOURCE DEVICE
Document Type and Number:
WIPO Patent Application WO/2006/022362
Kind Code:
A2
Abstract:
A cooling fan (30) of a secondary battery (10) and a cooling fan (40) for a DC/DC converter (20) are parallelly arranged and share the same gas discharge path (80). On the secondary battery (10) are installed an air intake side temperature sensor (12) and a gas discharge side temperature sensor (14). When the cooling fan (30) is in failure, a temperature deviation between the air intake side and the gas discharge side in the secondary battery (10) becomes greater because of that routing around component (95) of a discharge gas (90) which comes through the gas discharge path (80) as the cooling fan (40) operates. Based on this phenomenon, when operation commands for both cooling fans (30, 40) are already issued, a control circuit (50) detects the failure of the cooling fan (30) by monitoring the difference between temperatures (Tb1, Tb2) detected by the temperature sensors (12, 14). Failure detection is possible without installing a sensor on each cooling fan.

Inventors:
KIYA NOBUAKI (JP)
KATAYAMA JUNTA (JP)
Application Number:
PCT/JP2005/015498
Publication Date:
March 02, 2006
Filing Date:
August 19, 2005
Export Citation:
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Assignee:
TOYOTA MOTOR CO LTD (JP)
KIYA NOBUAKI (JP)
KATAYAMA JUNTA (JP)
International Classes:
H01M10/60; B60L3/00; H01M10/613; H01M10/625; H01M10/633; H01M10/6563; H02H5/04; H02J7/00
Foreign References:
JP2003112531A2003-04-15
JP2003178815A2003-06-27
JP2002343449A2002-11-29
JP2001210389A2001-08-03
Other References:
None
See also references of EP 1786058A4
Attorney, Agent or Firm:
Fukami, Hisao (Fukami Patent Office, Nakanoshima Central Tower 22nd Floor, 2-7, Nakanoshima 2-chome, Kita-k, Osaka-shi Osaka, 530-0005, JP)
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