SECONDARY BATTERY DEGRADATION DETERMINATION DEVICE

WIPO Patent Application WO/2017/159758

A1

Provided is a secondary battery degradation determination device for an emergency power source in which a plurality of battery groups each having a plurality of batteries connected in series are connected in parallel, wherein the secondary battery degradation determination device is capable of accurately determining degradation of each battery, is simple and can be manufactured at low cost, and, in particular, allows a means for generating a measurement current containing an AC component to be simple and compact. The secondary battery degradation determination device includes: a plurality of voltage sensors (7) connected to respective batteries (2); a discharge circuit (9) connected in parallel to battery groups (3); and discharge control means (11e). The discharge control means (11e) drives a switching element (27) to be opened and closed so that a current flowing through the discharge circuit (9) has a pulse shape or the like. The voltage sensors (7) each measure a voltage value of an AC component. An internal resistance calculation unit calculates an internal resistance on the basis of the measured value, and a determination unit determines degradation of the batteries (2) on the basis of the internal resistance.

YAMADA HIROYUKI (JP)

PCT/JP2017/010541

September 21, 2017

March 15, 2017

Click for automatic bibliography generation  

NTN TOYO BEARING CO LTD (JP)

G01R31/36; H01M10/42; H01M10/44; H01M10/48; H02J7/00

JP2012178953A	2012-09-13
JP2007300701A	2007-11-15
JP2012034535A	2012-02-16
JPH0973923A	1997-03-18
JP2011254585A	2011-12-15

SUGIMOTO, Shuji et al. (JP)

View/Download PDF      PDF Help

Previous Patent: BANKNOTE PROCESSING DEVICE

Next Patent: FISH PARASITIC DISEASE CONTROLLING AGENT AND FEED