INTERNAL RESISTANCE CALCULATION DEVICE, BATTERY CONTROL SYSTEM, AND INTERNAL RESISTANCE CALCULATION METHOD

WIPO Patent Application WO/2021/186884

A1

An internal resistance calculation device according to an embodiment of the present invention is provided with: a current acquisition unit; a voltage acquisition unit; a charge amount calculation unit; and an internal resistance calculation unit. The current acquisition unit acquires battery current flowing through a battery. The voltage acquisition unit acquires battery voltage applied to the battery. The charge amount calculation unit integrates the battery current acquired by the current acquisition unit over time, and calculates a charge amount transferred to the battery. The internal resistance calculation unit calculates the internal resistance of the battery on the basis of a change amount of each of the battery current and the battery voltage until the charge amount calculated by the charge amount calculation unit becomes equal to or greater than a preset threshold value.

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IDE MAKOTO (JP)
KOYA TAKASHI (JP)
YAMAMOTO MASAAKI (JP)

PCT/JP2021/001912

September 23, 2021

January 20, 2021

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TOSHIBA KK (JP)
TOSHIBA INFRASTRUCTURE SYSTEMS & SOLUTIONS CORP (JP)

H01M10/48; H02J7/00

JP5945085B1	2016-07-05
JP2018059812A	2018-04-12
JP2019105589A	2019-06-27
JP2014211307A	2014-11-13
JPH08136629A	1996-05-31
JP2018026307A	2018-02-15
JPH0883628A	1996-03-26
JP2008065989A	2008-03-21
JP2000121710A	2000-04-28
JP2010249770A	2010-11-04

SAKAI INTERNATIONAL PATENT OFFICE (JP)

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