NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND CHARGING METHOD

Title:

NONAQUEOUS ELECTROLYTE SECONDARY BATTERY AND CHARGING METHOD

Document Type and Number:

WIPO Patent Application WO/2018/155582

Kind Code:

A1

Abstract:

This nonaqueous electrolyte secondary battery is provided with: a positive electrode that uses an olivine-type compound as a positive electrode active material; a negative electrode that uses amorphous carbon as a negative electrode active material; a separator that is sandwiched between the positive electrode and the negative electrode; a nonaqueous electrolyte; and an outer case that houses the positive electrode, the negative electrode, the separator and the nonaqueous electrolyte. This nonaqueous electrolyte secondary battery is characterized in that the positive electrode, the negative electrode and the nonaqueous electrolyte are configured so as to satisfy formula (Rn/(Rp + Rn)) ≤ 0.54 (wherein Rp is the positive electrode internal resistance value ascribable to the positive electrode and the positive electrode reaction during charging of the secondary battery; Rn is the negative electrode internal resistance value ascribable to the negative electrode and the negative electrode reaction during charging of the secondary battery; and (Rp + Rn) is the inter-terminal internal resistance value of the secondary battery during charging of the secondary battery).

Inventors:

MINAGAWA ATSUHIKO (JP)
SUGIYAMA HIDEYUKI (JP)

Application Number:

PCT/JP2018/006544

Publication Date:

August 30, 2018

Filing Date:

February 22, 2018

Export Citation:

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Assignee:

ELIIY POWER CO LTD (JP)

International Classes:

H01M10/0585; H01M4/133; H01M4/136; H01M4/58; H01M4/587; H01M10/0525; H01M10/0569; H01M10/44

Domestic Patent References:

WO2011052309A1

2011-05-05

Foreign References:

JP2010218937A	2010-09-30
JP2012089348A	2012-05-10
JP2014010888A	2014-01-20
JP2015011930A	2015-01-19
JP2015138654A	2015-07-30
JP2016184521A	2016-10-20

Other References: