WO2013038763A1 - 二次電池システム及びその充放電方法 - Google Patents
二次電池システム及びその充放電方法 Download PDFInfo
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- WO2013038763A1 WO2013038763A1 PCT/JP2012/065091 JP2012065091W WO2013038763A1 WO 2013038763 A1 WO2013038763 A1 WO 2013038763A1 JP 2012065091 W JP2012065091 W JP 2012065091W WO 2013038763 A1 WO2013038763 A1 WO 2013038763A1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
- H02J7/0025—Sequential battery discharge in systems with a plurality of batteries
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/441—Methods for charging or discharging for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/28—Arrangements for balancing of the load in a network by storage of energy
- H02J3/32—Arrangements for balancing of the load in a network by storage of energy using batteries with converting means
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/0071—Regulation of charging or discharging current or voltage with a programmable schedule
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
- H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M4/00—Electrodes
- H01M4/02—Electrodes composed of, or comprising, active material
- H01M4/36—Selection of substances as active materials, active masses, active liquids
- H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
- H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
- H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Definitions
- the present invention relates to a secondary battery system for controlling charge / discharge of a secondary battery and a charge / discharge method thereof.
- Lithium ion secondary batteries that use lithium ion storage / release have higher energy density and higher operating voltage compared to, for example, nickel-cadmium (Ni-Cd) and nickel-hydrogen (Ni-MH) batteries of the same capacity. Since it has advantages, it is widely used in information processing equipment and communication equipment such as personal computers and mobile phones that are required to be reduced in size and weight.
- lithium-ion secondary batteries as power sources for electric vehicles and hybrid vehicles has been studied, and solar cells and wind power being introduced for the realization of a low-carbon society associated with global warming issues.
- Patent Literature 1 and Patent Literature 2 propose a technique for suppressing a reduction in product life by devising a charging / discharging method for a lithium ion secondary battery.
- Patent Document 1 discloses a lithium ion secondary battery in which the amount of lithium ions moving between the positive electrode active material and the negative electrode active material during charge / discharge is 95% or less of the reversibly movable lithium ion amount. It is described that the charging / discharging of is controlled.
- Patent Document 2 discloses charging / discharging of a lithium ion secondary battery so that the discharge end voltage during discharge is 3.2 to 3.1 V and the upper limit voltage during charging is 4.0 to 4.5 V. It is described to control.
- a structure using lithium cobalt oxide, lithium manganate, or lithium nickelate as a positive electrode material (positive electrode active material) is known for a lithium ion secondary battery.
- a negative electrode material negative electrode active material
- group is known.
- the present applicant when storing a manganese-based lithium ion secondary battery using lithium manganate as a positive electrode material in a specific SOC (State of Charge), It has been found that the battery performance deteriorates rapidly (battery capacity decreases).
- SOC refers to the ratio of the amount of electricity charged to the capacity of the lithium ion secondary battery.
- storage in this specification refers to leaving a lithium ion secondary battery in a state of a certain SOC value.
- the deterioration of battery performance due to this specific SOC is when using a lithium ion secondary battery in a usage form that is often stored in a fully charged state, such as UPS (Uninterruptible Power Supply). It is not a big problem.
- UPS Uninterruptible Power Supply
- the lithium ion secondary battery is stored at the specific SOC. It is also possible. In such a case, the battery performance of the lithium ion secondary battery is rapidly deteriorated.
- an object of the present invention is to provide a secondary battery system and a charging / discharging method thereof that can suppress the shortening of the product life of the secondary battery during storage.
- a secondary battery system of the present invention is a secondary battery system that controls charging and discharging of a secondary battery having a deterioration progress SOC that is an SOC whose battery performance deteriorates during storage,
- a control device that detects the SOC of the secondary battery, charges the secondary battery with power from a power supply source, and supplies power discharged from the secondary battery to a load;
- the first threshold value smaller than the deterioration progressing SOC of the secondary battery and the second threshold value larger than the deterioration progressing SOC are set in advance, and the second threshold value detected by the control device is maintained.
- the control device Based on the SOC value of the secondary battery, at the time of charging the secondary battery, the control device continues the charging operation of the secondary battery from the first threshold value to the second threshold value, An information processing device that causes the control device to continue the discharging operation of the secondary battery from the second threshold value to the first threshold value when the secondary battery is discharged; Have
- the charging / discharging method of the secondary battery system according to the present invention is a charging / discharging method of the secondary battery system for controlling charging / discharging of the secondary battery having a deterioration progress SOC which is an SOC whose battery performance deteriorates during storage.
- a controller that detects the SOC of the secondary battery, charges the secondary battery with power from a power supply source, and supplies the power discharged from the secondary battery to a load; Computer Holding a preset first threshold value smaller than the deterioration progress SOC of the secondary battery and a second threshold value larger than the deterioration progress SOC; Based on the SOC value of the secondary battery detected by the controller, the secondary battery is charged from the first threshold value to the second threshold value when the secondary battery is charged. The battery charging operation is continued, and when the secondary battery is discharged, the control device continues the discharging operation of the secondary battery from the second threshold value to the first threshold value.
- FIG. 1 is a block diagram showing a configuration example of the secondary battery system of the present invention.
- FIG. 2 is a block diagram illustrating a configuration example of the information processing apparatus illustrated in FIG.
- FIG. 3 is a schematic diagram illustrating a control example of the secondary battery system illustrated in FIG. 1.
- FIG. 4 is a schematic diagram illustrating a control example of the secondary battery system illustrated in FIG. 1.
- FIG. 1 is a block diagram showing a configuration example of the secondary battery system of the present invention
- FIG. 2 is a block diagram showing a configuration example of the information processing apparatus shown in FIG.
- the secondary battery system of the present invention includes a lithium ion secondary battery (hereinafter simply referred to as “secondary battery”) 1 and a control device 2 that charges and discharges the secondary battery 1.
- secondary battery a lithium ion secondary battery
- the consumer 3 is a power user (factory, building, facility, house, etc.) equipped with loads 6 such as various electric devices and heat pump water heaters that consume power supplied from the power system and the secondary battery 1. ).
- loads 6 such as various electric devices and heat pump water heaters that consume power supplied from the power system and the secondary battery 1.
- a load 6 shown in FIG. 1 collectively shows a large number of loads that the customer 3 has.
- the secondary battery 1 is linked to a power system via a switchboard 5 provided in the control device 2 and the customer 3.
- the consumer 3 may include a distributed power source 7 such as the above-described renewable power source, fuel cell, private power generation device, gas cogeneration system, and the like.
- the distributed power source 7 is connected to the power system via the PCS (Power Control System) 8 for the distributed power source 7 and the switchboard 5.
- PCS Power Control System
- the information processing device 4 and the control device 2 included in each customer 3 are connected to each other so that information, commands, and the like can be transmitted and received via known communication means.
- a well-known wireless communication means or a well-known wired communication means may be used.
- the wireless communication means for example, a well-known Zigbee wireless system using a radio frequency in the 950 MHz band can be considered.
- a wired communication means for example, a well-known PLC (Power Line Communication) method for transmitting and receiving information using a distribution line (power line) can be considered.
- FIG. 1 a configuration example in which the control device 2 and the secondary battery 1 of the two consumers 3 connected adjacent to the power system are controlled by the information processing device 4, which includes the secondary battery 1 and the control device 2.
- the control device 2 and the secondary battery 1 to be controlled by the information processing device 4 may be provided by a consumer 3 in a remote area.
- the consumer 3 provided with the secondary battery 1 and the control apparatus 2 to be controlled is not limited to two, and may be three or more.
- the secondary battery 1 is supplied with electric power necessary for charging from an electric power system or a distributed power source 7, and is used, for example, to level the peak demand of the electric power system.
- a manganese-based lithium ion secondary battery is used as the secondary battery 1, for example.
- the manganese-based lithium ion secondary battery is mainly composed of lithium manganate (Li x Mn y O z : x is about 1, or about 0.65, or about 0.1 to 0.5. Y is about 2 and z is about 4).
- the composition ratio of Li, Mn, and O is not limited to these numerical values.
- the positive electrode material only needs to be mainly lithium manganate, and may contain various substances such as Al, Mg, Cr, Fe, Co, Ni, and Cu.
- the present invention is not limited to a manganese-based lithium ion secondary battery, and can be applied to any secondary battery as long as performance degradation is rapidly progressed with a specific SOC.
- a dotted line on the secondary battery 1 shown in FIG. 1 indicates a specific SOC in which the performance deterioration of the secondary battery 1 rapidly proceeds during storage (hereinafter referred to as deterioration progressing SOC d ). Further, the solid line on the secondary battery 1 shown in FIG. 1 schematically shows the amount of electricity (SOC) accumulated with respect to the capacity of the secondary battery 1. The same applies to the dotted line and the solid line on the secondary battery 1 shown in FIGS. 3 and 4 used in the following description.
- FIG. 1 shows an example in which the capacity of the secondary battery 1 for each customer 3 is the same, but the capacity of each secondary battery 1 may be different.
- FIG. 1 shows an example in which each customer 3 includes one secondary battery 1, but if the control device 2 can charge and discharge individually, the secondary battery included in the customer 3.
- the number of 1 is not limited to one.
- the secondary battery 1 may be configured to charge / discharge in units of battery packs in which a plurality of secondary batteries (cells) are accommodated in one package, or may be configured to be charged / discharged in units of individual cells.
- the control device 2 is supplied from, for example, a well-known charging device and protection device manufactured according to the performance and characteristics of the secondary battery 1, which are provided from the manufacturer and seller of the secondary battery 1, and the power system.
- a known bi-directional inverter that converts AC power into DC power that can be stored in the secondary battery 1 and converts DC power discharged from the secondary battery 1 into AC power that can be connected to the power system. It can be realized with PCS (Power Control System).
- the control apparatus 2 is provided with the communication means for transmitting / receiving information with the information processing apparatus 4 shown in FIG. 1, and a charging device and a protection apparatus charge / discharge the secondary battery 1 according to the instruction
- the protection device detects the SOC of the secondary battery 1 and the current value input to and output from the secondary battery 1, and the charging device charges the charging current (constant current) based on the SOC and current value detected by the protection device. And change the charging voltage (constant voltage).
- the control device 2 may detect the value of the output voltage of the secondary battery 1 instead of the SOC.
- the control device 2 may include an A / D converter for converting the SOC value into a digital value.
- the information processing device 4 is installed, for example, in a centralized control room operated by a power company or a management company that manages the power system, and the SOC of each secondary battery 1 transmitted from each control device 2 when the secondary battery 1 is charged and discharged.
- the charging / discharging of the secondary battery 1 is controlled by transmitting an instruction to the control device 2 of each consumer 3 based on the received SOC value.
- the information processing apparatus 4 can be realized by, for example, a computer shown in FIG.
- the computer shown in FIG. 2 outputs a processing device 10 that executes predetermined processing according to a program, an input device 20 for inputting commands and information to the processing device 10, and a processing result of the processing device 10.
- Output device 30 outputs a processing device 10 that executes predetermined processing according to a program, an input device 20 for inputting commands and information to the processing device 10, and a processing result of the processing device 10.
- the processing device 10 includes a CPU 11, a main storage device 12 that temporarily holds information necessary for the processing of the CPU 11, a recording medium 13 on which a program for causing the CPU 11 to execute the processing of the present invention is recorded, and a secondary A data storage device 14 in which values such as a rated capacity, a maximum SOC, a minimum SOC, a first threshold value SOC L and a second threshold value SOC U described later are stored, and a main storage device 12, A memory control interface unit 15 that controls data transfer with the recording medium 13 and the data storage device 14, an I / O interface unit 16 that is an interface device with the input device 20 and the output device 30, information about each control device 2, The communication control device 17 for transmitting and receiving commands is provided, and they are connected via a bus 18.
- the processing device 10 controls charging / discharging of the secondary battery 1 for each customer 3 through the control device 2 by executing processing to be described later according to a program recorded on the recording medium 13.
- the recording medium 13 may be a magnetic disk, a semiconductor memory, an optical disk, or other recording medium.
- the data storage device 14 does not need to be provided in the processing device 10 and may be an independent device.
- the information processing device 4 includes a first threshold SOC L that is smaller than a preset deterioration progress SOC d of the secondary battery 1 and a second threshold SOC that is greater than the deterioration progress SOC d.
- U is held, and when the secondary battery 1 is charged, the control device 2 continues charging from the first threshold value SOC L to the second threshold value SOC U, and when the secondary battery 1 is discharged, The controller 2 continues the discharge from the second threshold value SOC U to the first threshold value SOC L.
- the first threshold value SOC L and the second threshold value SOC U are set by the manufacturer, the seller, or the user of the secondary battery 1 corresponding to the deterioration progress SOC d of the secondary battery 1. .
- the values of the first threshold value SOC L and the second threshold value SOC U for each secondary battery 1 are transmitted from the control device 2 to the information processing device 4, whereby the data storage device of the information processing device 4 14 may be stored.
- the information processing device 4 causes the control device 2 to continue the charging operation of the secondary battery 1 using the power supplied from the power system.
- scheduling may be performed so that the charging operation does not stop between the first threshold value SOC L and the second threshold value SOC U.
- the information processing device 4 activates the heat pump type water heater provided in the customer 3, for example, so that the discharge operation does not stop at the deterioration progress SOC d of the secondary battery 1. 1 discharge operation is continued.
- the information processing apparatus 4 and the heat pump type hot water heater may be connected via a communication unit so that the information processing apparatus 4 can control the water heater.
- this communication means a well-known wireless communication means or a well-known wired communication means may be used.
- the information processing device 4 is switched to a charge operation using power from the distribution system, for example.
- the deterioration progress SOC d of the secondary battery 1 may be avoided.
- the secondary battery being charged is equivalent to an electric device that consumes power for other secondary batteries. Therefore, when the consumer 3 includes a secondary battery (external secondary battery, for example, an electric vehicle) that is not included in the secondary battery system of the present embodiment, the secondary battery is charged by charging the external secondary battery. The discharging operation of the battery 1 may be continued.
- a secondary battery external secondary battery, for example, an electric vehicle
- the internal load when an internal load that consumes power is provided in the secondary battery 1 and the discharge operation is stopped due to the degradation progress SOC d of the secondary battery 1, the internal load is connected between the positive and negative terminals of the secondary battery 1. Thus, the discharging operation of the secondary battery 1 may be continued.
- the hot water heater, the external secondary battery, and the internal load may be connected to the information processing device 4 through communication means and be controllable in accordance with instructions from the information processing device 4.
- this communication means a well-known wireless communication means or a well-known wired communication means may be used.
- the present invention does not particularly limit the charge / discharge method between the first threshold value SOC L and the second threshold value SOC U , for example, the first threshold value SOC L is changed to the second threshold value.
- the charging speed may be increased by increasing the charging current and the charging voltage within the allowable range of the secondary battery 1.
- the discharge rate is increased by increasing the current flowing through the load 6 within the allowable range of the secondary battery 1. You may speed up.
- the charging current and the charging voltage can be controlled by a charging device provided in the control device 2 manufactured according to the performance and characteristics of the secondary battery 1.
- FIGS. 3A to 3C and FIGS. 4A to 4C are schematic diagrams showing control examples of the secondary battery system shown in FIG. 3 (a) to 3 (c) show an example of speeding up the charging operation by sharing the distributed power source 7 and the load 6 provided in the two consumers 3, and FIGS. 4 (a) to 4 (c) show two houses.
- the example which speeds up discharge operation by sharing the distributed power supply 7 and the load 6 with which the customer 3 of FIG. 3 (a) to 3 (c) and FIGS. 4 (a) to (c) only the secondary battery 1 and the control device 2 are connected to the power system in order to explain the charging / discharging method of the present invention. It shows the state.
- the information processing device 4 is connected to either one of the secondary batteries 1. After cell 1 reaches the first threshold SOC L, the other charging operation of the secondary battery 1 does not reach the first threshold SOC L stops and the first threshold SOC L Only one of the reached secondary batteries 1 is charged to the second threshold value SOC U with the power generated by the two distributed power sources 7.
- the two secondary batteries 1 are charged with the electric power generated by each distributed power source 7 provided in each consumer 3, and the SOC value of the other secondary battery 1 is the first threshold SOC L ,
- the information processing device 4 stops the charging operation of the one secondary battery 1 that has already reached the second threshold value SOC U , and the other information device 4 that has reached the first threshold value SOC L Only the secondary battery 1 is charged to the second threshold value SOC U with the power generated by the two distributed power sources 7.
- each secondary battery 1 is charged again with the electric power generated by each distributed power source 7 provided in the consumer 3. Good.
- each secondary battery 1 When the two secondary batteries 1 simultaneously reach the first threshold value SOC L , each secondary battery 1 is sequentially moved from the first threshold value SOC L to the second threshold value SOC U. When all the secondary batteries 1 reach the second threshold value SOC U , each secondary battery 1 may be charged with the power generated by the distributed power source 7 provided in the consumer 3.
- FIG. 3A shows an example of the SOC value at the start of charging the two secondary batteries 1.
- FIG. 3A shows an example in which the SOC value of each secondary battery 1 is the same at the start of charging.
- FIG. 3B the SOC value of each secondary battery 1 reaches the first threshold value SOC L from the state shown in FIG. 3A, and the charging operation for the secondary battery 1 on the right side is stopped. to show a state in which charging to the second threshold SOC U only the left of the secondary battery 1.
- 3C after the state shown in FIG. 3B, the charging operation for the left secondary battery 1 is stopped, and only the right secondary battery 1 is charged to the second threshold value SOC U. It shows the situation when
- the information processing apparatus 4 determines that the second battery 1 reaches the second threshold value SOC U when the second battery 1 reaches the second threshold value SOC U.
- the discharge operation of the other secondary battery 1 that has not reached the threshold value SOC U is stopped, and only one secondary battery 1 that has reached the second threshold value SOC U has a load 6 included in each consumer 3. To discharge to the first threshold SOC L.
- the information processing apparatus 4 has already Discharge operation of one secondary battery 1 that has reached the threshold value SOC L of 1 is stopped, and the load that each consumer 3 has only the other secondary battery 1 that has reached the second threshold value SOC U 6 to discharge to the first threshold SOC L.
- each secondary battery 1 may be discharged again with each load 6 included in the consumer 3.
- the secondary batteries 1 are sequentially moved from the second threshold value SOC U to the first threshold value SOC L one by one.
- each secondary battery 1 is discharged with each load 6 provided in the consumer 3.
- FIG. 4A shows an example of the SOC value at the start of discharge of the two secondary batteries 1.
- FIG. 4A shows an example in which the SOC value of each secondary battery 1 is the same at the start of discharge.
- 4B the SOC value of each secondary battery 1 reaches the second threshold value SOC U from the state shown in FIG. 4A, and the discharge operation by the right secondary battery 1 is stopped.
- SOC L The state when only the secondary battery 1 on the left side is discharged to the first threshold value SOC L is shown.
- 4C after the state shown in FIG. 4B, the discharge operation by the left secondary battery 1 is stopped, and only the right secondary battery 1 is discharged to the first threshold SOC. It shows the situation when
- the electric power generated by the shared distributed power supply 7 and the electric power consumed by the shared load 6 are exchanged between the consumers 3 through the electric power system, the first threshold value SOC L and the second threshold value Strictly speaking, the electric power used for charging / discharging the secondary battery 1 between the threshold SOCs U is consumed by the electric power generated by the shared distributed power source 7 or the load 6 of the shared customer 3 It is not necessarily electric power. However, from the viewpoint of the entire power system, it can be said that the power is mutually interchanged between the consumers 3 sharing the distributed power source 7 and the load 6.
- 3 and 4 show an example in which there are two secondary batteries 1 to be controlled. However, even when there are three or more secondary batteries 1 to be controlled, the first threshold value is also used. between SOC L and second threshold SOC U, the first threshold SOC L or a second plurality of customers distributed one by one from the secondary battery 1 reaches the threshold SOC U in order What is necessary is just to charge / discharge using a power supply or load.
- the first threshold value SOC L smaller than the deterioration progress SOC d of the secondary battery 1 and the second threshold value SOC U larger than the deterioration progress SOC d are preset, and the information processing apparatus 4 causes the control device 2 to continue the charging operation from the first threshold value SOC L to the second threshold value SOC U at the time of charging, and causes the control device 2 to start from the second threshold value SOC U at the time of discharging. Since the discharging operation is continued up to the first threshold value SOC L , the charging operation or the discharging operation is not stopped at the deterioration progress SOC d of the secondary battery 1. Therefore, shortening of the product life of the secondary battery 1 during storage can be suppressed.
- the deterioration progress SOC d of each secondary battery 1 is constant is shown, but the deterioration progress SOC d may vary depending on the operating time of the secondary battery 1 and the number of charge / discharge cycles. . Therefore, the first threshold value SOC L and the second threshold value SOC U may be changed according to the operation time and the number of charge / discharge cycles.
- each secondary battery is one, but if there are a plurality of the deterioration SOC d is for each secondary battery for each the deterioration SOC d
- the charge / discharge method described above may be applied.
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
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Abstract
Description
前記二次電池のSOCを検出すると共に、電力供給元からの電力で前記二次電池を充電し、前記二次電池から放電された電力を負荷へ供給する制御装置と、
予め設定された、前記二次電池の前記劣化進行SOCよりも小さい第1のしきい値及び前記劣化進行SOCよりも大きい第2のしきい値を保持し、前記制御装置で検出された該二次電池のSOCの値を基に、前記二次電池の充電時、前記制御装置に前記第1のしきい値から前記第2のしきい値まで前記二次電池の充電動作を継続させ、前記二次電池の放電時、前記制御装置に前記第2のしきい値から前記第1のしきい値まで前記二次電池の放電動作を継続させる情報処理装置と、
を有する。
前記二次電池のSOCを検出すると共に、電力供給元からの電力で前記二次電池を充電し、前記二次電池から放電された電力を負荷へ供給する制御装置を備えておき、
コンピュータが、
予め設定された、前記二次電池の前記劣化進行SOCよりも小さい第1のしきい値及び前記劣化進行SOCよりも大きい第2のしきい値を保持し、
前記制御装置で検出された該二次電池のSOCの値を基に、前記二次電池の充電時、前記制御装置に前記第1のしきい値から前記第2のしきい値まで前記二次電池の充電動作を継続させ、前記二次電池の放電時、前記制御装置に前記第2のしきい値から前記第1のしきい値まで前記二次電池の放電動作を継続させる方法である。
Claims (12)
- 保存時に電池性能が劣化するSOCである劣化進行SOCを有する二次電池の充放電を制御する二次電池システムであって、
前記二次電池のSOCを検出すると共に、電力供給元からの電力で前記二次電池を充電し、前記二次電池から放電された電力を負荷へ供給する制御装置と、
予め設定された、前記二次電池の前記劣化進行SOCよりも小さい第1のしきい値及び前記劣化進行SOCよりも大きい第2のしきい値を保持し、前記制御装置で検出された該二次電池のSOCの値を基に、前記二次電池の充電時、前記制御装置に前記第1のしきい値から前記第2のしきい値まで前記二次電池の充電動作を継続させ、前記二次電池の放電時、前記制御装置に前記第2のしきい値から前記第1のしきい値まで前記二次電池の放電動作を継続させる情報処理装置と、
を有する二次電池システム。 - 前記負荷を備えた複数の需要家毎に前記二次電池及び前記制御装置が設けられ、
前記情報処理装置は、
複数の前記二次電池の放電時、前記第2のしきい値に到達した二次電池から順に1台ずつ、該二次電池に対応して設けられた制御装置により前記第2のしきい値から前記第1のしきい値まで該二次電池の放電動作を継続させ、該二次電池から放電された電力を前記複数の需要家の負荷にそれぞれ供給させる請求項1記載の二次電池システム。 - 前記負荷を備えた複数の需要家毎に前記二次電池、前記コントローラ及び分散型電源が設けられ、
前記情報処理装置は、
複数の前記二次電池の充電時、前記第1のしきい値に到達した二次電池から順に1台ずつ、該二次電池に対応して設けられた制御装置により前記第1のしきい値から前記第2のしきい値まで該二次電池の充電動作を継続させ、前記複数の需要家が備える分散型電源で発電された電力を該二次電池に供給させる請求項1または2記載の二次電池システム。 - 前記二次電池は、
正極材料の主体がマンガン酸リチウムである請求項1から3のいずれか1項記載の充放電システム。 - 保存時に電池性能が劣化するSOCである劣化進行SOCを有する二次電池の充放電を制御するための二次電池システムの充放電方法であって、
前記二次電池のSOCを検出すると共に、電力供給元からの電力で前記二次電池を充電し、前記二次電池から放電された電力を負荷へ供給する制御装置を備えておき、
コンピュータが、
予め設定された、前記二次電池の前記劣化進行SOCよりも小さい第1のしきい値及び前記劣化進行SOCよりも大きい第2のしきい値を保持し、
前記制御装置で検出された該二次電池のSOCの値を基に、前記二次電池の充電時、前記制御装置に前記第1のしきい値から前記第2のしきい値まで前記二次電池の充電動作を継続させ、前記二次電池の放電時、前記制御装置に前記第2のしきい値から前記第1のしきい値まで前記二次電池の放電動作を継続させる二次電池システムの充放電方法。 - 前記負荷を備えた複数の需要家毎に前記二次電池及び前記制御装置が設けられ、
前記コンピュータが、
複数の前記二次電池の放電時、前記第2のしきい値に到達した二次電池から順に1台ずつ、該二次電池に対応して設けられた制御装置により前記第2のしきい値から前記第1のしきい値まで該二次電池の放電動作を継続させ、該二次電池から放電された電力を前記複数の需要家の負荷にそれぞれ供給させる請求項5記載の二次電池システムの充放電方法。 - 前記負荷を備えた複数の需要家毎に前記二次電池、前記コントローラ及び分散型電源が設けられ、
前記コンピュータが、
複数の前記二次電池の充電時、前記第1のしきい値に到達した二次電池から順に1台ずつ、該二次電池に対応して設けられた制御装置により前記第1のしきい値から前記第2のしきい値まで該二次電池の充電動作を継続させ、前記複数の需要家が備える分散型電源で発電された電力を該二次電池に供給させる請求項5または6記載の二次電池システムの充放電方法。 - 前記二次電池が、
正極材料の主体がマンガン酸リチウムである請求項5から7のいずれか1項記載の二次電池システムの充放電方法。 - 保存時に電池性能が劣化するSOCである劣化進行SOCを有する二次電池の充放電を制御するための情報処理装置であって、
予め設定された、前記二次電池の前記劣化進行SOCよりも小さい第1のしきい値及び前記劣化進行SOCよりも大きい第2のしきい値を保持する記憶装置と、
前記二次電池のSOCを検出すると共に、電力供給元からの電力で前記二次電池を充電し、前記二次電池から放電された電力を負荷へ供給する制御装置で検出された該二次電池のSOCの値を基に、
前記制御装置で検出された該二次電池のSOCの値を基に、前記二次電池の充電時、前記制御装置に前記第1のしきい値から前記第2のしきい値まで前記二次電池の充電動作を継続させ、前記二次電池の放電時、前記制御装置に前記第2のしきい値から前記第1のしきい値まで前記二次電池の放電動作を継続させる処理装置と、
を有する情報処理装置。 - 前記処理装置は、
複数の前記二次電池の放電時、前記第2のしきい値に到達した二次電池から順に1台ずつ、該二次電池に対応して設けられた制御装置により前記第2のしきい値から前記第1のしきい値まで該二次電池の放電動作を継続させ、該二次電池から放電された電力を前記複数の需要家の負荷にそれぞれ供給させる請求項9記載の情報処理装置。 - 前記処理装置は、
複数の前記二次電池の充電時、前記第1のしきい値に到達した二次電池から順に1台ずつ、該二次電池に対応して設けられた制御装置により前記第1のしきい値から前記第2のしきい値まで該二次電池の充電動作を継続させ、前記複数の需要家が備える分散型電源で発電された電力を該二次電池に供給させる請求項9または10記載の情報処理装置。 - 前記二次電池は、
正極材料の主体がマンガン酸リチウムである請求項9から11のいずれか1項記載の情報処理装置。
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WO2014080641A1 (ja) * | 2012-11-26 | 2014-05-30 | パナソニック株式会社 | 蓄電池制御方法および蓄電池制御システム |
KR20160063756A (ko) * | 2014-11-27 | 2016-06-07 | 삼성에스디아이 주식회사 | 배터리 팩 및 이의 제어 방법 |
US20180331397A1 (en) * | 2015-11-17 | 2018-11-15 | Zeon Corporation | Charging device and electronic device |
WO2017187203A1 (en) * | 2016-04-29 | 2017-11-02 | Technology Solutions (Uk) Limited | Improvements related to battery-powered electronic devices |
GB2543596A (en) * | 2016-04-29 | 2017-04-26 | Tech Solutions (Uk) Ltd | Improvements related to battery-powered RFID readers |
GB2543595B (en) * | 2016-04-29 | 2018-04-18 | Tech Solutions Uk Limited | Improvements related to battery-powered electronic devices |
RU2702758C1 (ru) * | 2019-02-26 | 2019-10-11 | Акционерное общество "Научно-исследовательский институт электромеханики" | Способ заряда комплекта аккумуляторных батарей в составе автономной системы электропитания космического аппарата |
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