Title:
BATTERY CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/186088
Kind Code:
A1
Abstract:
It has conventionally been difficult to set a weighting for calculating an SOC with high accuracy. This battery control device has a weighting factor computation unit 114 that calculates a weighting factor W on the basis of a formula (5) so that an SOCv specific gravity and SOCi specific gravity are automatically selected in accordance with the magnitude of a current I.
Formula (5): W=1/{(1+|I|×R×G2)×G1}
Herein, the correction factor G1 is set to a value 1 or greater and a value not greater than a prescribed value such as, for example, 100 in the present embodiment and subsequent embodiments. The correction factor G2 is set to a value 0 or greater. For the correction factors G1 and G2, values corresponding to a characteristic of a battery 400 are stored in advance in a storage unit 120. It suffices for the value of the correction factor G1 to be a value not greater than a prescribed value such as, for example, 100.
Inventors:
OHKAWA KEIICHIRO (JP)
NAKAO RYOHHEI (JP)
NAKAO RYOHHEI (JP)
Application Number:
PCT/JP2018/008461
Publication Date:
October 11, 2018
Filing Date:
March 06, 2018
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2014115294A1 | 2014-07-31 | |||
| WO2017195760A1 | 2017-11-16 |
Foreign References:
| JP2014044074A | 2014-03-13 | |||
| JP2002222668A | 2002-08-09 | |||
| US20120109556A1 | 2012-05-03 |
Attorney, Agent or Firm:
TODA Yuji (JP)
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