BATTERY ENERGY STORAGE SYSTEM, BATTERY MANAGEMENT SYSTEM, AND CONTROL METHOD

Title:

BATTERY ENERGY STORAGE SYSTEM, BATTERY MANAGEMENT SYSTEM, AND CONTROL METHOD

Document Type and Number:

WIPO Patent Application WO/2018/179854

Kind Code:

A1

Abstract:

The invention addresses the problem of providing a battery system in which a battery cell does not exceed a use limit temperature, the frequency in which the battery system stops a charging/discharging process is reduced, and, even if the charging/discharging process is stopped, the recovery time thereof is reduced. The battery system described in the present invention has a plurality of battery cells and a control circuit for controlling the charging/discharging currents of the battery cells. The control circuit performs a plurality of temperature rise estimations on the basis of a battery temperature, a charging/discharging current, and the time width of a time window. The control circuit selects the charging/discharging current corresponding to a temperature rise estimation among the plurality of temperature rise estimations, said temperature rise estimation estimating that temperature rise does not exceed the use limit temperature of the battery cells.

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Inventors:

MATTHEY FANNY (JP)
YAMAUCHI SHIN (JP)
SAKABE KEI (JP)
NAKAO RYOHHEI (JP)
KOMATSU DAIKI (JP)
OHKAWA KEIICHIRO (JP)

Application Number:

PCT/JP2018/003904

Publication Date:

October 04, 2018

Filing Date:

February 06, 2018

Export Citation:

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Assignee:

HITACHI AUTOMOTIVE SYSTEMS LTD (JP)

International Classes:

H02J7/00; G01R31/36; H01M10/48

Domestic Patent References:

WO2015019873A1	2015-02-12
WO2015019875A1	2015-02-12
WO2016006462A1	2016-01-14
WO2011132561A1	2011-10-27

Foreign References:

JP2009077466A

2009-04-09

Other References: