Title:
BATTERY DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/201915
Kind Code:
A1
Abstract:
This battery device comprises: a detection unit; a level shifter; an AD conversion unit; a storage unit; and a calculation unit. The detection unit detects the closed circuit voltage of a plurality of electrically-connected battery cells. The level shifter adjusts a gain and an offset of the detected closed circuit voltage.
The AD conversion unit converts the closed circuit voltage, of which the gain and offset were adjusted, to a digital signal. The storage unit stores: battery information including a closed circuit voltage; and conversion unit information related to ideal characteristics and actual characteristics which serve as input/output characteristics of an input voltage and an output voltage of the AD conversion unit. The calculation unit adjusts at least the gain and/or the offset so as to narrow a difference between the closed circuit voltage stored in the storage unit and an input voltage at an intersection of the actual characteristics and the ideal characteristics.
Inventors:
HORIGUCHI MASAKATSU (JP)
UCHIYAMA MASAKI (JP)
UCHIYAMA MASAKI (JP)
Application Number:
PCT/JP2022/004620
Publication Date:
September 29, 2022
Filing Date:
February 07, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
H02J7/00; H01M10/48; H02J7/02
Domestic Patent References:
| WO2019077707A1 | 2019-04-25 |
Foreign References:
| JP2010141957A | 2010-06-24 | |||
| JPH04323580A | 1992-11-12 | |||
| JP2002325362A | 2002-11-08 |
Attorney, Agent or Firm:
YAHAGI Kazuyuki et al. (JP)
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