CHARGE AND DISCHARGE CONTROL METHOD OF LITHIUM ION SECONDARY BATTERY, SECONDARY BATTERY SYSTEM, AND HYBRID AUTOMOBILE

• Main Authors: ABE TAKESHI, TSUJIKO AKIRA, TERAMOTO DAISUKE, YUASA YUKIE, WASADA KEIKO, HARA TOMITARO, YANO TSUYOSHI
• Format: Patent
• Language: English
• Published: 24.09.2010
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMISTRY; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; COMPOUNDS THEREOF; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC EQUIPMENT OR PROPULSION OF ELECTRICALLY-PROPELLEDVEHICLES; ELECTRICITY; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES, IN GENERAL; GENERATION; INORGANIC CHEMISTRY; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; METALLURGY; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TRANSPORTING; VEHICLES IN GENERAL

PROBLEM TO BE SOLVED: To provide a charge and discharge control method of a lithium ion secondary battery, a secondary battery system, and a hybrid automobile, capable of fully exhibiting the battery performance by controlling localization of Li ions in the lithium ion secondary battery having a positive electrode active material which performs two-phase coexisting charge and discharge. SOLUTION: In a method of controlling charge and discharge of the lithium ion secondary battery having the positive electrode active material which performs the two-phase coexisting charge and discharge, the lithium ion secondary battery 100 is used between a discharge-stop charging depth SOCDand a charge-stop charging depth SOCC, and the discharge-stop charging depth SOCDand the charge-stop charging depth SOCCare sequentially varied between a lower-limit charging depth SOCBand an upper-limit charging depth SOCT. COPYRIGHT: (C)2010,JPO&INPIT