Title:
MONITORING DEVICE AND BATTERY APPARATUS COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2022/249702
Kind Code:
A1
Abstract:
A battery apparatus (100) comprises a monitoring unit (10) and a control unit (30). The monitoring unit comprises a level shifter (12), an AD conversion unit (13), and a reference voltage circuit (16). The level shifter is provided with a plurality of range setting units (122, 123) which are each for varying an acquisition range of a closed-circuit voltage for a plurality of electrically-connected battery cells (220). The AD conversion unit converts, into a digital signal, the closed-circuit voltage outputted from the level shifter within the acquisition ranges set by the range setting units. The reference voltage circuit outputs a reference voltage to the level shifter. The control unit (30) comprises an arithmetic unit (33). On the basis of a reference voltage outputted by the reference signal unit and a plurality of reference voltages that have been converted into digital signals by the AD conversion unit within the plurality of acquisition ranges set by the respective range setting units, the arithmetic unit determines which of the range setting units has an abnormality occurring therein.
Inventors:
KATO SHINYA (JP)
SATO YOSHIHIRO (JP)
SATO YOSHIHIRO (JP)
Application Number:
PCT/JP2022/013980
Publication Date:
December 01, 2022
Filing Date:
March 24, 2022
Export Citation:
Assignee:
DENSO CORP (JP)
International Classes:
B60L3/00; B60L58/10; G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2013161067A1 | 2013-10-31 |
Foreign References:
| JP2012215558A | 2012-11-08 | |||
| JP2006284538A | 2006-10-19 | |||
| JP2011112504A | 2011-06-09 | |||
| JPH08189845A | 1996-07-23 |
Attorney, Agent or Firm:
YAHAGI Kazuyuki et al. (JP)
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