WO2012165340A1 - 蓄電システム - Google Patents
蓄電システム Download PDFInfo
- Publication number
- WO2012165340A1 WO2012165340A1 PCT/JP2012/063514 JP2012063514W WO2012165340A1 WO 2012165340 A1 WO2012165340 A1 WO 2012165340A1 JP 2012063514 W JP2012063514 W JP 2012063514W WO 2012165340 A1 WO2012165340 A1 WO 2012165340A1
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- WO
- WIPO (PCT)
- Prior art keywords
- battery
- power storage
- capacity
- series
- storage unit
- Prior art date
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Classifications
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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
- H02J1/00—Circuit arrangements for dc mains or dc distribution networks
- H02J1/10—Parallel operation of dc sources
- H02J1/102—Parallel operation of dc sources being switching converters
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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
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/14—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle
- H02J7/1423—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from dynamo-electric generators driven at varying speed, e.g. on vehicle with multiple batteries
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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
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/345—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering using capacitors as storage or buffering devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
- H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
- H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
- H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M3/156—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
- H02M3/158—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators including plural semiconductor devices as final control devices for a single load
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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
- 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 power storage system.
- Patent Document 1 There is a technique disclosed in Patent Document 1 as a background technique in this technical field.
- Patent Document 1 proposes a power storage system that uses a combination of a capacity-oriented battery and an instantaneous battery.
- the capacity-oriented battery refers to a battery having a large capacity although a current that can be passed through the battery is small.
- an instantaneous battery indicates a battery that has a large current that can be passed through the battery but a small capacity.
- a representative example of energy saving in the transport sector is a hybrid system.
- the hybrid system is a system that efficiently uses energy by recovering regenerative power from a motor to a storage battery during deceleration and releasing the power during acceleration to assist driving. During this acceleration / deceleration, a rapid current change is involved, so a high output characteristic is required in a short time. Further, if the energy density of the storage battery is increased, the restriction on the installation area is reduced, leading to a reduction in the size and weight of the vehicle body. For this reason, the storage battery is required to have a high instantaneous output density and a high capacity density.
- livestock batteries are also spreading widely in the field of new energy. This is because the power generation output of wind power generation and solar power generation is not stable, and in order to solve this, a power storage system is installed in those power generation facilities, smoothed to power fluctuations that do not adversely affect the power system, This is because it is necessary to increase the interconnection capacity. Moreover, if the capacity density of a storage battery becomes high, the restriction of an installation area will become small and it will become easy to attach to power generation equipment.
- the capacity-oriented battery rapidly deteriorates when a current exceeding the specified value flows. For this reason, when using a capacity-oriented battery, for example, it is necessary to provide a switch in the charge / discharge path of the capacity-oriented battery, and to control the switch so that no more than a specified current flows through the capacity-oriented battery. is there.
- the use of the capacity-oriented battery is unconditionally restricted, so that the high capacity density characteristic of the capacity-oriented battery is not fully utilized, and the power storage system is configured only by the instantaneous power battery. It is thought that it will be near. As a result, it is considered that the number of instantaneous type batteries must be increased, and the power storage system is increased in size accordingly.
- the representative invention of the present application has a typical problem to be solved to extend the life of a power storage system having high output and high capacity density in a short time.
- the system can be miniaturized.
- the power storage system includes at least two types of power storage units, and includes a first power storage unit configured by the first power storage unit and a second power storage unit configured by the second power storage unit. Electrically connected via a current control circuit.
- the power storage system includes at least three types of power storage units, and includes a first power storage unit configured by the first power storage unit and a second power storage unit configured by the second power storage unit. Through the first current control circuit, the second power storage unit configured by the second power storage unit and the third power storage unit configured by the third power storage unit are electrically connected via the second current control circuit, respectively. Connect.
- the current control circuit is configured by a voltage adjustment circuit, and the voltage adjustment circuit includes a step-up chopper, a step-down chopper, a step-up / step-down chopper, It is preferable that it is configured by any one of a combination of a step-up chopper and a step-down chopper.
- the current control circuit is preferably configured by an impedance adjustment circuit.
- the impedance adjustment circuit is preferably a coil.
- a power storage system includes a first power storage unit configured by a first power storage device, and a second power storage unit configured by a second power storage device of a different type from the first power storage device. , Provided between the first power storage unit and the second power storage unit, electrically connecting the first power storage unit and the second power storage unit, the first power storage unit and the second power storage unit A current control circuit that controls the amount of input / output current, and the current control circuit has two switch circuits, and controls the on / off of the two switch circuits, whereby the first power storage unit and the second power storage unit Controls the ratio of the input / output current amount.
- the life of the battery system can be extended.
- FIG. 6 is a relationship diagram showing the results of battery system life evaluation and showing the relationship of the capacity retention rate of a capacity-oriented battery to the number of cycles.
- the circuit diagram which shows the structure of the battery system carrying the voltage adjustment circuit different from the voltage adjustment circuit of FIG.
- the circuit diagram which shows the structure of the battery system carrying the voltage adjustment circuit different from the voltage adjustment circuit of FIG.
- the circuit diagram which shows the structure of the battery system carrying the voltage adjustment circuit different from the voltage adjustment circuit of FIG.
- FIG. 11 is a waveform diagram showing an operation of the voltage adjustment circuit (switch) of FIG. 10.
- FIG. 13 is a waveform diagram showing an operation of the voltage adjustment circuit (switch) of FIG. 12.
- the circuit diagram which shows the structure of the battery system which is 2nd Embodiment of this invention.
- the wave form diagram which shows the time change of the electric current before and after the impedance adjustment circuit introduction of FIG.
- the circuit diagram which shows the structure of the battery system which is 3rd Embodiment of this invention.
- Embodiment 1 Embodiment 1
- FIG. 1 thru 1st Embodiment of this invention is described using FIG. 1 thru
- FIG. 1 shows the overall configuration of the battery system of this embodiment.
- the instantaneous force type battery 2 and the capacity-oriented battery 1 are mixedly mounted, and these batteries are electrically connected in parallel via the voltage adjustment circuit 6.
- 1 is a capacity-oriented battery
- 2 is an instantaneous force battery
- 301 is a switch 1
- 302 is a switch 2
- 4 is a diode
- 5 is a coil
- 6 is a voltage limiting circuit. .
- the battery system is provided with a controller 101 that controls the switches 301 and 302.
- the voltage adjustment circuit 6 electrically connects a battery group in which capacity-oriented batteries 1 are electrically connected in series and an instantaneous force battery 2 electrically connected in parallel to the battery group. Between the assembled battery group. The negative electrode side of the battery group assembled by connecting the capacity-oriented battery 1 in series electrically and the negative electrode side of the battery group assembled by connecting the instantaneous force type battery 2 in series electrically A switch 301 and a switch 302 are electrically connected in series to the path. A battery that is assembled by connecting the switch 301 and the switch 302, the positive electrode side of the battery group that is assembled by electrically connecting the capacity-oriented batteries 1 in series, and the instantaneous force battery 2 that is electrically connected in series. A coil 5 is electrically connected between a path electrically connecting the positive electrode side of the group.
- MOSFETs Metal-Oxide-Semiconductor Field-Effect Transistors
- an assembled battery in which a plurality of lithium ion secondary batteries are electrically connected in series is adopted as the capacity-oriented battery 1 and the instantaneous battery 2.
- a lithium ion secondary battery using lithium cobaltate as a positive electrode is adopted for a capacity-oriented battery, and a lithium ion secondary battery using lithium iron oliate as a positive electrode for a flash-type battery. It was adopted.
- the battery combination is not limited to a lithium ion secondary battery using lithium cobaltate as the positive electrode, as long as it has a high capacity but does not allow a large current to flow. You may adopt.
- a battery that can flow a large current but has a small capacity density is not limited to a lithium ion secondary battery that uses lithium iron oliate as a positive electrode.
- Both the battery group assembled using a plurality of capacity-oriented batteries and the battery group assembled using a plurality of instantaneous power batteries are assumed to be obtained by electrically connecting a plurality of batteries of the same type in series, When the SOC was 50%, the voltage was set to about 300V.
- the capacity of a battery group assembled by connecting capacity-oriented batteries 1 in series electrically is A
- B is the capacity of a battery group assembled by connecting instantaneous force type batteries 2 in series.
- the operation of the switches 301 and 302 is shown in FIG. In FIG. 2, 1 indicates that the switch is on, and 0 indicates that the switch is off.
- the switch 301 is on, the switch 302 is controlled to be off, and when the switch 301 is off, the switch 302 is controlled to be on.
- the DUTY ratio of the switch is defined as the ratio at which the switch 301 is turned on
- the DUTY ratio of the switch corresponds to the capacity ratio (B / (A + B)) between the capacity A and the capacity B. In this way, by controlling on / off of the switch 301 and the switch 302, the ratio of the current flowing through the capacity-oriented battery 1 and the instantaneous force battery 2 can be adjusted.
- FIG. 3 shows changes in current flowing through a battery group in which the capacity-oriented battery 1 is electrically connected in series and a battery group in which the instantaneous force battery 2 is electrically connected in series.
- the current flows evenly according to the capacity ratio (B / (A + B)) between the capacity A and the capacity B, and the capacity A and the capacity B can be used evenly.
- Fig. 4 shows the current change before and after the increase in the DUTY ratio of the switch.
- the voltage adjustment circuit 6 is provided to change the DUTY ratio of the switches constituting the voltage adjustment circuit 6, no large current exceeding the specified value flows through the capacity-oriented battery 1. That is, the voltage adjustment circuit 6 functions as a current control circuit for suppressing a current exceeding a specified value from flowing through the capacity-oriented battery 1. Moreover, if such a circuit is used, the battery group assembled by connecting the capacity-oriented batteries 1 in series in series is not electrically separated, so that the utilization rate of the capacity-oriented batteries 1 is reduced. There is no. Therefore, it is not necessary to increase the number of instantaneous power type batteries 2 to increase capacity, and an increase in the size of the system due to an increase in the number of instantaneous power type batteries 2 can be avoided.
- the change in current is a zigzag shape. Therefore, in this embodiment, a capacitor 7 is added to the circuit shown in FIG. Specifically, as shown in FIG. 5, the positive electrode side of the battery group in which the capacity-oriented batteries 1 are electrically connected in series and the instantaneous force battery 2 are electrically connected in series. A path for electrically connecting the positive electrode side of the battery group, a negative electrode side of the battery group formed by electrically connecting the capacity-oriented battery 1 in series, and the instantaneous battery 2 in series Capacitors on the side of the battery group assembled by connecting the instantaneous force type batteries 2 in series in the voltage adjustment circuit 6 between the path for electrically connecting the negative side of the battery group assembled and connected 7 is added.
- Fig. 6 shows changes in the current flowing through the capacity-oriented battery before and after the capacitor 7 is added.
- step-up / step-down chopper shown in FIG. 1 is adopted as the voltage adjusting circuit, but a step-up / step-down chopper having another configuration may be adopted.
- FIG. 7 shows a case where a step-up / down chopper different from FIG. 1 is used. Even in this case, as in the circuit shown in FIG. 1, by operating the switches 301 and 302, it is possible to cause the current to flow evenly to the instantaneous type battery when a large current is applied, even when the current to be applied is small.
- a battery group in which capacity-oriented batteries 1 are electrically connected in series and a battery group in which instantaneous force batteries 2 are electrically connected in series are electrically connected.
- the load is electrically connected to the positive and negative electrodes of the battery group assembled by connecting the instantaneous force type batteries 2 in series.
- the switches 301 and 302 include a positive electrode side of a battery group assembled by electrically connecting capacity-oriented batteries 1 in series and a battery group assembled by electrically connecting instantaneous force batteries 2 in series. Electrically connected in series with the negative electrode side.
- the coil 5 includes a negative electrode side of a battery group assembled by connecting the capacity-oriented batteries 1 in series and a positive electrode side of a battery group assembled by connecting the instantaneous force type batteries 2 in series. Between the switch 301 and the electrical connection point between the switches 301 and 302.
- FIG. 8 shows the charge / discharge pattern at that time
- FIG. 9 shows the change in the capacity retention rate of the capacity-oriented battery 1.
- the capacity retention rate is the ratio of the capacity after the cycle test to the initial capacity, and the smaller this value is, the more the deterioration is progressing. From this result, it can be seen that the use of the voltage adjustment circuit 6 can suppress the deterioration of the capacity-oriented battery.
- step-up / step-down chopper has been described as an example of the voltage adjustment circuit 6, but as the voltage adjustment circuit 6, a step-up chopper, a step-down chopper, or a combination thereof may be used.
- FIG. 10 shows a case where a boost chopper is used as the voltage adjustment circuit 6.
- the step-up chopper is employed as the voltage adjustment circuit 6, the voltage of the battery group formed by electrically connecting the capacity-oriented batteries 1 in series electrically The number of each battery group is adjusted so as to be lower than the voltage of the battery groups assembled in series.
- the switch 301 and the coil 5 are electrically connected in series to a path that electrically connects the sides.
- a switch 302 was electrically connected between a path electrically connecting the negative side of the group.
- FIG. 11 shows a case where a step-down chopper is used as the voltage adjustment circuit 6.
- the voltage of the battery group assembled by connecting the capacity-oriented batteries 1 in series electrically is the voltage of the battery group assembled by connecting the instantaneous force type batteries 2 in series.
- the number of each battery group is adjusted to be higher.
- FIG. 12 shows a case where a combination of a step-up chopper and a step-down chopper is used as the voltage adjustment circuit 6.
- 301 is a switch 1
- 302 is a switch 2
- 303 is a switch 3
- 304 is a switch 4.
- the negative electrode side of the battery group assembled by electrically connecting capacity-oriented batteries 1 in series, and the negative electrode of the battery group assembled by connecting instantaneous force batteries 2 in series The side is electrically connected.
- Switches 301 and 302 are electrically connected in series between the positive electrode side and the negative electrode side of the battery group assembled and connected in series.
- the coil 5 is electrically connected between the switches 301 and 302 and between the switches 303 and 304.
- the voltage of a battery group formed by electrically connecting capacity-oriented batteries 1 in series is a battery group formed by electrically connecting instantaneous force batteries 2 in series.
- the voltage is always set lower than the voltage of. The movement of the switch at this time is shown in FIG. In this case, switching the switch 303 always on, the switch 304 always off, and switching only the switch 301 and the switch 302 is equivalent to operating the voltage adjustment circuit 6 as a boost chopper.
- the voltage of the battery group formed by electrically connecting the capacity-oriented battery 1 in series is the battery group formed by electrically connecting the instantaneous force type battery 2 in series.
- the switches 301 to 304 are controlled so that the switches 301 and 304 have the same movement and the switches 302 and 303 have the opposite movement.
- This switching method is shown in FIG.
- the voltage of the battery group assembled by connecting the capacity-oriented battery 1 in series in series is related to the voltage of the battery group assembled by connecting the instantaneous force type battery 2 in series.
- the voltage adjustment circuit 6 allows the current flowing through the battery group assembled by electrically connecting the capacity-oriented battery 1 in series and the battery group assembled by connecting the instantaneous force battery 2 in series. Can be controlled.
- the coil 5 which is an impedance adjustment circuit is electrically connected in series to the path for electrically connecting the two.
- the impedance adjustment circuit functions as a current control circuit for suppressing a current exceeding a specified value from flowing through the capacity-oriented battery 1.
- the battery flows through the battery group in which the capacity-oriented battery 1 is electrically connected in series and the battery group in which the instantaneous force battery 2 is electrically connected in series. Shows the current change.
- the current flowing through the battery group assembled by connecting the capacity-oriented battery 1 in series in series and the battery group assembled by connecting the instantaneous force type battery 2 in series on the vertical axis is The axis shows the frequency of the current and shows the relationship between the two.
- a battery group in which capacity-oriented batteries 1 are electrically connected in series and a battery group in which instantaneous force batteries 2 are electrically connected in series are assembled.
- a capacitive element group in which capacitive passive elements 8 such as an electric double layer capacitor and a lithium ion capacitor are electrically connected in series is electrically connected to a battery group electrically connected in parallel with each other. Connected in parallel.
- a voltage adjustment circuit 601 is electrically connected between a battery group in which the capacity-oriented battery 1 is electrically connected in series and a battery group in which the instantaneous force battery 2 is electrically connected in series. Connected to.
- a voltage adjustment circuit 602 is electrically connected between the groups.
- a capacitive element group in which capacitive passive elements 8 such as an electric double layer capacitor and a lithium ion capacitor are electrically connected in series is small in capacity but has a large current that is instantaneously accepted.
- the voltage adjustment circuits 601 and 602 are composed of the step-up / step-down chopper shown in FIG.
- the voltage adjustment circuits 601 and 602 function as a current control circuit for suppressing a current exceeding a specified value from flowing through the capacity-oriented battery 1 and the instantaneous force battery 2.
- a battery group in which the capacity-oriented battery 1 is electrically connected in series and the instantaneous power battery 2 are electrically connected in series A current is applied in accordance with a ratio corresponding to a capacity ratio of each of the assembled battery group and the capacitive element group formed by electrically connecting capacitive passive elements 8 such as an electric double layer capacitor and a lithium ion capacitor in series.
- a battery group in which the capacity-oriented battery 1 is electrically connected in series a battery group in which the instantaneous force battery 2 is electrically connected in series, and an electric double layer capacitor or lithium ion Capacitance of a capacitive element group formed by electrically connecting capacitive passive elements 8 such as capacitors in series can be used evenly.
- the switch duty ratio of the voltage adjustment circuit 601 is increased.
- the switch duty ratio of the voltage adjustment circuit 601 is increased.
- the capacitive element group formed by electrically connecting capacitive passive elements 8 such as a double layer capacitor and a lithium ion capacitor in series is increased.
- the DUTY ratio of the switch of the voltage adjustment circuit 602 is adjusted.
- a current flowing through a capacitive element group formed by electrically connecting capacitive passive elements 8 such as an electric double layer capacitor and a lithium ion capacitor in series increases, and the capacity-oriented battery 1 is electrically connected. It can be seen that the current flowing through the battery group assembled in series with the battery and the battery group assembled with the instantaneous force type battery 2 connected in series decreases.
- the system of Embodiments 1 to 3 is applied as a power source for a hybrid vehicle.
- hybrid vehicles include not only automobiles but also vehicles such as railways and buses.
- FIG. 19 shows a configuration of a hybrid vehicle in which any one of the first to third embodiments is applied as a driving power source.
- the hybrid system includes a parallel system and a system that combines a series system and a parallel system, but the configuration of the present embodiment described below can be applied to any power source.
- 9 is an engine
- 10 is a generator
- 11 is a converter
- 12 is an inverter
- 13 is a battery system
- 14 is a motor
- 15 is an axle.
- the X point and the Y point correspond to the X store and the Y point of the battery system shown in the first to third embodiments.
- the generator 9 is driven by the engine 9 to generate electric power, and the electric power is supplied to the motor 14 via the converter 11 and the inverter 12.
- the battery system 13 supplies power to the inverter.
- the motor 14 transmits power to the axle 15 using the electric power obtained from the engine 9 and the electric power obtained from the battery system 13.
- the battery system 13 is provided with the current control circuit according to any one of the first to third embodiments.
- the capacity-oriented battery and the instantaneous force type battery are mixedly mounted, and the capacity-oriented battery and the instantaneous force type battery are electrically connected in parallel via the current control circuit.
- the current control circuit By controlling the operation, it is possible to suppress a current exceeding a specified value from flowing through the capacity-oriented battery.
- a voltage adjustment circuit as the current control circuit.
- a voltage adjustment circuit any of a step-up chopper, a step-down chopper, and a step-up / step-down chopper may be used. Further, when using a step-up chopper or a step-down chopper, it is necessary that a potential difference is always generated between the capacity-oriented battery and the instantaneous power battery.
- an impedance adjustment element as the current control circuit.
- a coil is desirable as the impedance adjustment element.
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
Description
本発明の第2の態様によると、蓄電システムは、少なくとも3種類の蓄電器を備え、第1の蓄電器によって構成した第1の蓄電ユニットと、第2の蓄電器によって構成した第2の蓄電ユニットとを第1の電流制御回路を介して、第2の蓄電器によって構成した第2の蓄電ユニットと、第3の蓄電器によって構成した第3の蓄電ユニットとを第2の電流制御回路を介して、それぞれ電気的に接続する。
本発明の第3の態様によると、第1又は第2の態様の蓄電システムにおいて、電流制御回路は電圧調整回路によって構成されており、電圧調整回路は、昇圧チョッパ,降圧チョッパ,昇降圧チョッパ,昇圧チョッパと降圧チョッパとを併用したもののいずれかによって構成されていることが好ましい。
本発明の第4の態様によると、第1又は第2の態様の蓄電システムにおいて、電流制御回路は、インピーダンス調整回路によって構成されていることが好ましい。
本発明の第5の態様によると、第4の態様の蓄電システムにおいて、インピーダンス調整回路はコイルであることが好ましい。
本発明の第6の態様によると、蓄電システムは、第1の蓄電器によって構成した第1の蓄電ユニットと、第1の蓄電器とは種類が異なる第2の蓄電器によって構成した第2の蓄電ユニットと、第1の蓄電ユニットと第2の蓄電ユニットとの間に設けられ、第1の蓄電ユニットと第2の蓄電ユニットとを電気的に接続し、第1の蓄電ユニットと第2の蓄電ユニットの入出力電流量を制御する電流制御回路とを備え、電流制御回路は、2つのスイッチ回路を有し、2つのスイッチ回路のオンオフを制御することにより、第1の蓄電ユニットと第2の蓄電ユニットの入出力電流量の比率を制御する。
-実施形態1-
-実施形態2-
-実施形態3-
-実施形態4-
日本国特許出願2011年第123030号(2011年6月1日出願)
Claims (6)
- 少なくとも2種類の蓄電器を備え、第1の蓄電器によって構成した第1の蓄電ユニットと、第2の蓄電器によって構成した第2の蓄電ユニットとを、電流制御回路を介して電気的に接続した蓄電システム。
- 少なくとも3種類の蓄電器を備え、第1の蓄電器によって構成した第1の蓄電ユニットと、第2の蓄電器によって構成した第2の蓄電ユニットとを第1の電流制御回路を介して、第2の蓄電器によって構成した第2の蓄電ユニットと、第3の蓄電器によって構成した第3の蓄電ユニットとを第2の電流制御回路を介して、それぞれ電気的に接続した蓄電システム。
- 請求項1又は2に記載の蓄電システムにおいて、前記電流制御回路は電圧調整回路によって構成されており、前記電圧調整回路は、昇圧チョッパ,降圧チョッパ,昇降圧チョッパ,昇圧チョッパと降圧チョッパとを併用したもののいずれかによって構成されている蓄電システム。
- 請求項1又は2に記載の蓄電システムにおいて、前記電流制御回路は、インピーダンス調整回路によって構成されている蓄電システム。
- 請求項4に記載の蓄電システムにおいて、前記インピーダンス調整回路はコイルである蓄電システム。
- 蓄電システムであって、
第1の蓄電器によって構成した第1の蓄電ユニットと、
前記第1の蓄電器とは種類が異なる第2の蓄電器によって構成した第2の蓄電ユニットと、
前記第1の蓄電ユニットと前記第2の蓄電ユニットとの間に設けられ、前記第1の蓄電ユニットと前記第2の蓄電ユニットとを電気的に接続し、前記第1の蓄電ユニットと前記第2の蓄電ユニットの入出力電流量を制御する電流制御回路とを備え、
前記電流制御回路は、2つのスイッチ回路を有し、前記2つのスイッチ回路のオンオフを制御することにより、前記第1の蓄電ユニットと前記第2の蓄電ユニットの入出力電流量の比率を制御する蓄電システム。
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EP12792511.3A EP2717417A4 (en) | 2011-06-01 | 2012-05-25 | BATTERY SYSTEM |
US14/122,616 US20140191576A1 (en) | 2011-06-01 | 2012-05-25 | Electric storage system |
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PCT/JP2012/063514 WO2012165340A1 (ja) | 2011-06-01 | 2012-05-25 | 蓄電システム |
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US (1) | US20140191576A1 (ja) |
EP (1) | EP2717417A4 (ja) |
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EP2717417A1 (en) | 2014-04-09 |
JPWO2012165340A1 (ja) | 2015-02-23 |
US20140191576A1 (en) | 2014-07-10 |
EP2717417A4 (en) | 2015-03-25 |
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