Battery state determination device
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 30, 2018
Issued Date -
N/A
app pub date -
Mar 13, 2014
filing date -
Apr 12, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
This battery state determination device (10) is provided with: a voltage detection unit (13) that detects the voltage (V) of a rechargeable battery (M) to be evaluated; a current detection unit (12) that detects the current of the rechargeable battery (M); a charge state detection unit (11) that detects the state of charge (SOC) of the rechargeable battery (M); and a determination unit (11) configured so as to calculate the absolute value of the voltage gradient (G), which indicates the change in voltage with respect to the discharge amount (Ah), when the state of charge (SOC) of the rechargeable battery (M) is less than 40%, compare the absolute value of the voltage gradient (G) to a pre-set upper limit value (Gmax), and, when the absolute value of the voltage gradient (G) is greater than the upper limit value (Gmax), determine that a small short circuit has occurred in the rechargeable battery (M).
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully