Title:
SECONDARY BATTERY DEGRADATION DETERMINATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/209214
Kind Code:
A1
Abstract:
Provided is a secondary battery degradation determination device which is capable of accurately determining degradation of batteries for emergency power supply, and in which a plurality of battery groups each including a plurality of batteries connected in series are connected in parallel at a data center, a mobile phone base station or the like, and moreover which can be manufactured simply and at low cost. The secondary battery degradation determination device includes: a plurality of voltage sensors (7) connected to the respective batteries (2); a measurement-current application device (9) for applying a measurement current including an AC component to each of the battery groups (3); and a controller (11). A sensor-basis wireless communication means (10) for transmitting wirelessly a voltage measurement value of the AC component to each of the voltage sensors (7) is provided. One current sensor (8) is provided for a parallel-connection assembly (3B) of the battery groups (3). The controller (11) receives the measurement value transmitted from the sensor-basis wireless communication means (10), and calculates an internal resistance of each of the batteries (2) by using the measurement value and a detection value of the current sensor (8) to determine degradation of the battery (2) on the basis of the internal resistance.
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Inventors:
YAMADA HIROYUKI (JP)
Application Number:
PCT/JP2017/020353
Publication Date:
December 07, 2017
Filing Date:
May 31, 2017
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
G01R31/36; H01M10/48; H02J7/00
Domestic Patent References:
| WO2012050126A1 | 2012-04-19 | |||
| WO2005078673A1 | 2005-08-25 |
Foreign References:
| JP2013140055A | 2013-07-18 | |||
| JPH08339829A | 1996-12-24 | |||
| JP2014236625A | 2014-12-15 | |||
| JP2010239709A | 2010-10-21 | |||
| JP2003111289A | 2003-04-11 | |||
| JP2005100969A | 2005-04-14 |
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (JP)
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