Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
METHOD FOR ESTIMATING DETERIORATION IN POWER STORAGE MEANS, POWER SOURCE DEVICE, AND RAILWAY VEHICLE
Document Type and Number:
Japanese Patent JP2012013472
Kind Code:
A
Abstract:

To accurately grasp replacement time of power storage means by accurately and simply estimating degrading of resistance in the power storage means and to achieve stable operation without imposing an overload to the power storage means.

In a railway vehicle which travels according to a predetermined operation method, a current value, a surface temperature, a voltage, and an environment temperature in the power storage means while travelling on a railroad are recorded. A difference ΔV between the maximum voltage and the minimum voltage is compared with an initial value ΔVini for calculating deterioration in comparison with a threshold value ΔVth, the deterioration is reflected to vehicle control and a degree of deterioration and a checkup notice are displayed in a control platform.


Inventors:
YAMAUCHI SHIYUUKO
AMANO MASAHIKO
ARITA YUTAKA
Application Number:
JP2010148467A
Publication Date:
January 19, 2012
Filing Date:
June 30, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
HITACHI LTD
International Classes:
G01R31/36; B60L3/00; H01M10/44; H01M10/48; H02J7/00; B60R16/04; B61C3/02
Domestic Patent References:
JP2010093875A2010-04-22
JP2000206214A2000-07-28
JPH1197049A1999-04-09
JP2003214248A2003-07-30
JP2006275846A2006-10-12
JP2010093875A2010-04-22
JP2000206214A2000-07-28
JPH1197049A1999-04-09
JP2003214248A2003-07-30
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda



 
Previous Patent: TOTAL LOAD WEIGHT CALCULATION METHOD

Next Patent: SEMICONDUCTOR INSPECTION EQUIPMENT