# US 2014/0197798 A1 · Secondary battery system and operating method of secondary battery > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2014/0197798 A1 - Document ID: US20140197798A1 - Status: Published application - Kind: A1 - Application number: 14/237,909 - Filed: 2012-06-13 - Published: 2014-07-17 - Earliest claimed: 2011-09-15 - Assignees: NEC Corporation - Inventors: Hiroo Hongo; Koji Kudo; Kenichi Ishii; Kenji Kobayashi; Takayuki Nyu - Web page: https://patentgrep.com/patent/US20140197798A1 ## CPC - H02J 7/865: {Battery or charger load switching, e.g. concurrent charging and load supply (H02J7/50 takes precedence)} - H01M 4/505: of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy - H01M 10/052: Li-accumulators - H01M 10/44: Methods for charging or discharging (circuits for charging H02J7/00) - H01M 2010/4271: {Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing} - Y02E 60/10: Energy storage using batteries - Y02P 70/50: Manufacturing or production processes characterised by the final manufactured product - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - H02J: ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A secondary battery has a progressively deteriorating SOC in which battery performance deteriorates when the secondary battery is stored, and is charged and discharged by a control device. An information processing device stores a preset first threshold smaller than the progressively deteriorating SOC of the secondary battery and a preset second threshold greater than the progressively deteriorating SOC, and separates the range from the minimum SOC to the maximum SOC of the secondary battery into, at least, two regions by setting the section from the first threshold to the second threshold as a boundary to thereby cause the control device to charge or discharge the secondary battery within any of the above regions. ## Claims ### Claim 1 A secondary battery system including a secondary battery having a progressively deteriorating SOC in which battery performance deteriorates when the secondary battery is stored, comprising: a control device that, while detecting the SOC of said secondary battery, charges said secondary battery with electric power from an electric power source and supplies the electric power discharged from said secondary battery to a load; and, an information processing device that stores a preset first threshold smaller than said progressively deteriorating SOC of said secondary battery and a preset second threshold greater than said progressively deteriorating SOC, and separates the range from the minimum SOC to the maximum SOC of said secondary battery into, at least, two regions by setting the section from said first threshold to said second threshold as a boundary to thereby cause said control device to charge or discharge said secondary battery within any of the above regions. ### Claim 2 (depends on 1) The secondary battery system according to claim 1, wherein when said secondary battery is used in the range from said minimum SOC to said maximum SOC, said information processing device causes said control device to continue charging said secondary battery from said first threshold to said second threshold at the time of charging the secondary battery, and to continue discharging said secondary battery from said second threshold to said first threshold at the time of discharging said secondary battery. ### Claim 3 (depends on 1) The secondary battery system according to claim 1, wherein said positive electrode material of said lithium ion secondary battery is mainly lithium manganese oxide. ### Claim 4 An operating method of a secondary battery having a progressively deteriorating SOC in which battery performance deteriorates when the secondary battery is stored, the method comprising the steps of: providing a control device that, while detecting the SOC of said secondary battery, charges said secondary battery with electric power from an electric power source and supplies the electric power discharged from said secondary battery to a load; causing a computer to store a preset first threshold smaller than said progressively deteriorating SOC of said secondary battery and a preset second threshold greater than said progressively deteriorating SOC, and to separate the range from the minimum SOC to the maximum SOC of said secondary battery into, at least, two regions by setting the section from said first threshold to said second threshold as a boundary; and causing said control device to charge or discharge said secondary battery within any of the above regions. ### Claim 5 (depends on 4) The operating method of a secondary battery according to claim 4, further comprising: when said secondary battery is used in the range from said minimum SOC to said maximum SOC, causing said control device to continue charging said secondary battery from said first threshold to said second threshold at the time of charging said secondary battery and to continue discharging said secondary battery from said second threshold to said first threshold at the time of discharging said secondary battery. ### Claim 6 (depends on 4) The operating method of a secondary battery according to claim 4, wherein said positive electrode material of said lithium ion secondary batteries is mainly lithium manganese oxide. ### Claim 7 An information processing apparatus for controlling a secondary battery having a progressively deteriorating SOC in which battery performance deteriorates when the secondary battery is stored, comprising: a storing device storing a preset first threshold smaller than said progressively deteriorating SOC of said secondary battery and a preset second threshold greater than said progressively deteriorating SOC; and, a processing device, which separates the range from the minimum SOC to the maximum SOC of said secondary battery into, at least, two regions by setting the section from said first threshold to said second threshold as a boundary, and which causes a control device that, while detecting the SOC of said secondary battery, charges said secondary battery with electric power from an electric power source and supplies the electric power discharged from said secondary battery to a load, to charge or discharge said secondary battery within any of the above regions. ### Claim 8 (depends on 7) The information processing apparatus according to claim 7, wherein when said secondary battery is used in the range from said minimum SOC to said maximum SOC, said processing device causes said control device to continue charging said secondary battery from said first threshold to said second threshold at the time of charging said secondary battery, and to continue discharging said secondary battery from said second threshold to said first threshold at the time of discharging said secondary battery. ### Claim 9 (depends on 7) The information processing apparatus according to claim 7, wherein said positive electrode material of said lithium ion secondary batteries is mainly lithium manganese oxide. ### Claim 10 (depends on 2) The secondary battery system according to claim 2, wherein said information processing device also includes a communication means that sends an instruction for controlling the operation of said load, wherein: said information processing device, when said secondary battery is charged, causes said control device to continue supplying electric power to said secondary battery from a distributed generator or an electric power system which is said electric power source such that the charging operation of said secondary battery does not stop between said first threshold and said second threshold, said information processing device, when said secondary battery is discharged, causes said control device to continue discharging operation of said secondary battery by operating said load such that the discharging operation of said secondary battery does not stop between said second threshold and said first threshold. ### Claim 11 (depends on 2) The secondary battery system according to claim 2, wherein said information processing device controls said control device or load such that charging current, charging voltage or discharging current of said secondary battery between said first threshold and said second threshold is larger than the charging current, charging voltage or discharging current of said secondary battery in other regions between said first threshold and said second threshold. ### Claim 12 (depends on 5) The operating method of a secondary battery according to claim 5, further comprising: providing a communication means that sends an instruction for controlling the operation of said load from said computer to said load, causing said control device to continue supplying electric power to said secondary battery from a distributed generator or an electric power system which is said electric power source such that charging operation of said secondary battery does not stop between said first threshold and said second threshold, when said secondary battery is charged, causing said control device to continue the discharging operation of said secondary battery by operating said load such that the discharging operation of said secondary battery does not stop between said second threshold and said first threshold, when said secondary battery is discharged. ### Claim 13 (depends on 5) The operating method of a secondary battery according to claim 5, further comprising: causing said computer to control said control device or load such that charging current, charging voltage or discharging current of said secondary battery between said first threshold and said second threshold is larger than charging current, charging voltage or discharging current of said secondary battery in other regions between said first threshold and said second threshold. ### Claim 14 (depends on 8) The information processing apparatus according to claim 8, further comprising a communication means that sends an instruction for controlling the operation of said load, wherein: said processing device, when said secondary battery is charged, causes said control device to continue supplying electric power to said secondary battery from a distributed generator or an electric power system which is said electric power source such that the charging operation of said secondary battery does not stop between said first threshold and said second threshold, said processing device, when said secondary battery is discharged, causes said control device to continue the discharging operation of said secondary battery by operating said load such that the discharging operation of said secondary battery does not stop between said second threshold and said first threshold. ### Claim 15 (depends on 8) The information processing apparatus according to claim 8, wherein said processing device controls said control device or load such that charging current, charging voltage or discharging current of said secondary battery between said first threshold and said second threshold is larger than charging current, charging voltage or discharging current of said secondary battery in other regions between said first threshold and said second threshold.