WO2012049915A1 - 電力管理システム - Google Patents
電力管理システム Download PDFInfo
- Publication number
- WO2012049915A1 WO2012049915A1 PCT/JP2011/069826 JP2011069826W WO2012049915A1 WO 2012049915 A1 WO2012049915 A1 WO 2012049915A1 JP 2011069826 W JP2011069826 W JP 2011069826W WO 2012049915 A1 WO2012049915 A1 WO 2012049915A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- power
- charge
- state
- storage unit
- power storage
- Prior art date
Links
Images
Classifications
-
- 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
-
- 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
-
- 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
-
- 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
- H02J1/14—Balancing the load in a network
-
- 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
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
-
- 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
-
- 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
- H02J7/02—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from ac mains by converters
- H02J7/04—Regulation of charging current or voltage
-
- 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
- H02J7/35—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering with light sensitive cells
-
- 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
Definitions
- the present invention relates to a power management system, and more particularly to a system for controlling charge / discharge of a storage battery.
- Patent Document 1 as a power supply system of a network system, a plurality of photovoltaic power generation systems connected to a communication line, and an information source that measures weather information such as solar radiation and transmits it to the photovoltaic power generation system An arrangement including the apparatus is disclosed.
- a power storage device composed of a lithium ion battery or the like is used.
- Patent Document 2 as a management apparatus for a lithium ion battery, the charge / discharge state of the lithium ion battery based on the measured value of the charge / discharge current of the lithium ion battery, the measured value of the temperature, and the power supply information of the commercial power supply And calculating the remaining capacity of the lithium ion battery.
- the lithium ion battery and other secondary batteries constituting the power storage device have a voltage between terminals of a unit storage battery generally called a unit cell of about 1V to 4V and a relatively small capacity. Therefore, it is necessary to configure a storage battery pack using a plurality of unit cells and further configure a power storage device using a plurality of storage battery packs.
- An object of the present invention is to provide a system capable of performing charge / discharge control in accordance with variation in characteristics of storage battery packs.
- the present invention is a power management system that controls charging / discharging of a power storage unit that is charged by power from a power source and discharges accumulated power to a load, and is charged for each of a plurality of storage battery packs included in the power storage unit Detection means for detecting information, and in accordance with the detected charging information, when the detected charging information is between a predetermined lower limit value and an upper limit value, the power storage device is placed in a charge / discharge state in which both charging and discharging are possible, and detection When the charging information is smaller than the lower limit value, the power storage unit is changed from the charge / discharge state to a chargeable state where only charging is possible, and when the detected charging information exceeds the upper limit value, the power storage unit is changed to the charge / discharge state.
- a control means for making a transition to a discharge state in which only discharge is possible, wherein the control means extracts a minimum value and a maximum value of the detected charging information for each of the plurality of storage battery packs, and the minimum value is the lower limit value.
- the power storage unit is transitioned from the charge / discharge state to the charge state when the value is smaller than the upper limit, and the power storage unit is transitioned from the charge / discharge state to the discharge state when the extracted maximum value exceeds the upper limit value.
- control unit further changes the power storage unit from the charged state to the charged / discharged state when the detected charging information reaches a first threshold value greater than the lower limit value.
- the power storage unit is transitioned from the discharging state to the charging / discharging state.
- control unit causes the power storage unit to transition from the charged state to the charge / discharge state when the maximum value reaches the first threshold value, and the minimum value. Transitions the power storage unit from the discharge state to the charge / discharge state when the second threshold value is reached.
- control unit causes the power storage unit to transition from the charged state to the charge / discharge state when the minimum value reaches the first threshold value, and When the value reaches the second threshold value, the power storage unit is transitioned from the discharge state to the charge / discharge state.
- control means includes a charge switch that connects the power source and the power storage unit, and a power system switching unit that includes a discharge switch that connects the power storage unit and the load. And switching control of the charge switch and the discharge switch according to the detected charge information, and turning on both the charge switch and the discharge switch to control the power storage unit to the charge / discharge state, and turning on only the charge switch.
- a power management unit that controls the power storage unit to the charged state and controls the power storage unit to the discharged state by turning on only the discharge switch.
- the power source includes an external commercial power source and a solar power generation system, and the solar power generation system and the power storage unit are connected via the charge switch and the first changeover switch.
- the external commercial power source and the power storage unit are connected to the load via a second switch, and the power management unit turns on the charge switch and stores the first switch in the charge / discharge state.
- the charging switch is turned on and the first switching
- the switch is switched to the power storage unit side, the discharge switch is turned off, and the second switch is switched to the external commercial power source side
- the charging switch is turned off and the first switching switch is switched to the external commercial power source side.
- the discharging switch is turned on and the second switching switch is turned to the power storage unit side. Control is performed so that discharge can be performed by switching.
- the present invention is a power management system that controls charging / discharging of a power storage unit that is charged with power from a power source and discharges the stored power to a load, and includes a plurality of storage battery packs included in the power storage unit.
- the control means Selects the charging / discharging state, the charging state, or the discharging state according to the charging information detected by the detecting means, and when the current time is included in a predetermined period, the charging of the power storage unit
- the power storage unit is set to the charged state regardless of information.
- charging / discharging of a power storage unit can be controlled in consideration of variations in storage battery packs, and external power can be efficiently stored and supplied to a load while preventing overcharge and overdischarge of the storage battery pack.
- the state transition between the charge / discharge state, the charge state, and the discharge state can be stably controlled.
- FIG. 1 shows an overall configuration diagram of a power management system in the present embodiment.
- the power management system includes a solar battery (solar power generation system) 12, a power storage device 14, a switch SWa (first changeover switch) 18, and SWb (second changeover switch) 28 as power sources in addition to the external commercial power supply 10. And a power conditioner 24 and an AC / DC converter 26.
- the power storage device 14 includes a power storage unit 16, a power system switching circuit 20, and a power management unit 22.
- the power storage unit 16 includes a plurality of storage battery packs, and each storage battery pack includes a plurality of unit cells.
- the unit cell is composed of a lithium ion secondary battery. The configuration of the power storage unit 16 will be further described later.
- the power system switching circuit 20 is a circuit that switches between connecting the power storage device 14 and the solar battery 12 or connecting the power storage device 14 and a load (a DC load that operates on a direct current).
- a switch connecting the power storage device 14 and the solar battery 12 is called a charge switch, and a switch connecting the power storage device 14 and a load is called a discharge switch.
- the charge switch When the power storage device 14 is charged, the charge switch is turned on and the discharge switch is turned off.
- the charge switch is turned off and the discharge switch is turned on.
- both the charge switch and the discharge switch are turned on.
- both the charge switch and the discharge switch are turned off.
- Charging / discharging of the power storage device 14 is controlled by a command from the power management unit 22.
- the power management unit 22 receives SOC (charge rate) data indicating charging information from each of the storage battery packs of the plurality of storage battery packs constituting the power storage unit 16, and instructs the power system switching circuit based on the SOC data. Is output to control charging / discharging of the power storage device 14. In addition, the power management unit 22 controls ON / OFF of the switch SWa18 and the switch SWb28 at the same time.
- SOC charge rate
- the switch SWa18 is arranged between the solar cell 12, the power storage device 14, and the power conditioner 24, and switches the power from the solar cell 12 to either the power storage device 14 or the power conditioner 24 and outputs it.
- the contact of the switch SWa 18 is connected to the power storage device 14 side according to a command from the power management unit 22, and the power from the solar battery 12 is supplied to the power storage device 14 side.
- the contact of the switch SWa 18 is connected to the power conditioner 24 side according to a command from the power management unit 22, and the power from the solar cell 12 is supplied to the power conditioner 24.
- switch SWa18 switches and outputs an output voltage with the case where it outputs to the electrical storage apparatus 14, and the case where it outputs to the power conditioner 24. Since the safety design becomes more important as the voltage on the power storage device 14 side is higher, a lower voltage is desired. That is, charging can be performed safely by making the voltage on the power storage device 14 side smaller than the desired input voltage required for the power conditioner 24.
- the switch SWa18 includes a switch that switches a connection configuration (series / parallel) of a plurality of solar cell modules constituting the solar cell 12, and the plurality of solar cell modules are arranged in parallel when output to the power storage device 14 side. When connecting and outputting, and outputting to the power conditioner 24 side, a plurality of solar cell modules are connected in series and output.
- Switch SWb28 is arranged between AC / DC converter 26 and power storage device 14 and the DC load, and switches either power from AC / DC converter 26 or power from power storage device 14 to output to the DC load. To do. When the power storage device 14 is discharged, the contact of the switch SWb 28 is connected to the power storage device 14 side according to a command from the power management unit 22, and the power from the power storage device 14 is supplied to the DC load. When charging the power storage device 14, the contact of the switch SWb 28 is connected to the AC / DC converter 26 side according to a command from the power management unit 22, and the power from the AC / DC converter 26 is supplied to the DC load.
- a DC-DC converter is disposed between the switch SWb28 and the DC load, and after the voltage is converted, the DC-DC converter is supplied to the DC load.
- the power conditioner 24 converts the DC power from the solar cell 12 into AC power, and matches the phase with the phase of the external commercial power supply 10 for output.
- the AC power from the power conditioner 24 is supplied to the external commercial power source 10 (so-called power sale) or supplied to an AC load (not shown).
- the AC / DC converter 26 converts AC power from the external commercial power supply 10 or power from the solar cell 12 output from the power conditioner 24 into DC power and outputs it to the switch SWb28.
- External commercial power supply 10 is a single-phase or three-phase AC power source, and is supplied from an external power company by combining power generation methods such as hydroelectric power generation, thermal power generation, and nuclear power generation.
- the solar cell 12 is a solar power generation system having a power generation capability of, for example, several tens of kW, in which a plurality of solar cell modules are connected.
- DC load is, for example, lighting in factory equipment, office equipment such as servers and personal computers.
- FIG. 2 shows an internal configuration of the storage battery pack 17 constituting the power storage unit 16.
- the storage battery pack 17 is configured by connecting a plurality of lithium ion unit cells 16a in series and in parallel. That is, for example, 24 unit cells 16a are connected in parallel and 13 stages are connected in series.
- the storage battery pack 17 includes a pack information control unit 16c including a parameter calculation unit 16b in addition to the plurality of unit cells.
- the parameter calculation unit 16b measures the voltage value of each stage where the unit cells are connected in parallel, and calculates the current value and voltage value between the + and-electrodes of the storage battery pack, the SOC of the storage battery pack, and the temperature of each storage battery pack. Measure and output to the pack information control unit 16c.
- the SOC is a parameter representing the ratio of the dischargeable capacity (remaining capacity) to the full charge capacity as a percentage.
- the SOC can be obtained from an integrated value of charging / discharging currents flowing through the storage battery pack, or by referring to a calculation formula or table showing a relationship between a predetermined open circuit voltage of the storage battery pack and the SOC.
- FIG. 3 shows an internal configuration of the power storage unit 16 and the power system switching circuit 20.
- the power storage unit 16 is configured by connecting a plurality of storage battery packs 17 shown in FIG. 2 in series and in parallel. That is, for example, two storage battery packs 17 are connected in series, and these are connected in parallel in three rows.
- the data from the pack information control unit 16c of each storage battery pack 17, that is, the voltage value for each stage where the unit cells are connected in parallel, the current value and voltage value of the storage battery pack, the SOC of the storage battery pack, and the temperature of the storage battery pack are The data is output to the power management unit 22 via the communication line.
- the power management unit 22 controls charging / discharging of the power storage device 14 based on the SOC for each storage battery pack.
- FIG. 4 shows a state transition diagram of the charge / discharge state of the power storage device 14.
- the power storage device 14 is in a charge / discharge state in the default state.
- the charge / discharge state is a state in which the charged power is discharged from the solar battery 12 and the stored power is discharged to the load.
- FIG. 5 shows a charge / discharge state in the configuration of FIG.
- the contact of the switch SWa18 is switched to the power storage device 14 side, and both the charge switch and the discharge switch of the power system switching circuit 20 are turned on. Further, the contact of the switch SWb28 is switched to the power storage device 14 side.
- the electric power generated by the solar battery 12 is supplied to the power storage unit 16 of the power storage device 14 through the switch SWa18 and the power system switching circuit 20, and is charged.
- the power stored in the power storage unit 16 is supplied to the load and discharged via the power system switching circuit 20 and the switch SWb28. Note that the charge / discharge state is maintained as it is even when the power generated by the solar cell 12 is zero or close to it in cloudy or rainy weather or at night.
- the charge / discharge state as described above is set as a default state, and when a certain condition is satisfied from this state, a transition is made to the charge state.
- the certain condition is a condition where the SOC of the power storage unit 16 needs to be reduced and charged.
- the transition from the charge / discharge state to the charge state is referred to as transition I for convenience.
- FIG. 6 shows the state of charge in the configuration of FIG. The contact of the switch SWa18 is switched to the power storage device 14 side, the charging switch of the power system switching circuit 20 is turned on, and the discharging switch is turned off. The contact of the switch SWb28 is switched to the AC / DC converter 26 side.
- the electric power generated by the solar battery 12 is supplied to the power storage unit 16 of the power storage device 14 through the switch SWa18 and the power system switching circuit 20, and is charged. Further, AC power from the external commercial power supply 10 is converted to DC power by the AC / DC converter 26 and supplied to the DC load via the switch SWb28. In other words, when the power storage device 14 is in the charged state, the electric power necessary for the DC load is supplied from the external commercial power supply 10.
- the constant condition is a condition where the SOC of the power storage unit 16 is within a desired range and can be charged and discharged.
- transition II The transition from the charge state to the charge / discharge state is referred to as transition II for convenience.
- FIG. 7 shows a discharge state in the configuration of FIG.
- the contact of the switch SWa18 is switched to the power conditioner 24 side, the charging switch of the power system switching circuit 20 is turned off, and the discharging switch is turned on. Further, the contact of the switch SWb28 is switched to the power storage device 14 side.
- the power stored in the power storage unit 16 is supplied to the load via the power system switching circuit 20 and the switch SWb28 and discharged.
- the electric power generated with the solar cell 12 is converted into alternating current power by the power conditioner 24, and is output to an alternating current system.
- This electric power may be sold to an external electric power company or supplied to an AC load (not shown).
- the constant condition is a condition where the SOC of the power storage unit 16 is within a desired range and can be charged and discharged.
- transition IV The transition from the discharge state to the charge / discharge state is referred to as transition IV for convenience.
- charging / discharging of the power storage device 14 is determined according to the SOC in the power storage unit 16, but the power storage unit 16 includes a plurality of storage battery packs 17, and the individuality of the storage battery pack 17 is repeated while charging and discharging are repeated. Becomes obvious and its characteristics vary. Specifically, the SOC of each battery pack 17 varies. Therefore, the power management unit 22 of the present embodiment considers the variation in SOC of the plurality of storage battery packs in the power storage unit 16, extracts the maximum value and the minimum value, and performs charging based on the extracted maximum value and minimum value. Control the discharge.
- FIG. 8 shows a detailed block diagram of the power management unit 22.
- the power management unit 22 includes an SOC holding memory 22a, a maximum value calculation unit 22b, a minimum value calculation unit 22c, a state transition management unit 22d, and a charge / discharge control unit 22e.
- the SOC holding memory 22a holds the SOC of each storage battery pack 17 supplied from the pack information control unit 16c (see FIG. 2) in the storage battery pack 17.
- the parameter calculation unit 16b (see FIG. 2) in each storage battery pack 17 periodically calculates the SOC of the storage battery pack 17 at a predetermined control timing and supplies it to the pack information control unit 16c.
- the pack information control unit 16c In response to this, the SOC of the storage battery pack 17 is periodically supplied to the power management unit 22.
- the SOC holding memory 22a sequentially stores a total of six SOCs that are periodically supplied.
- the SOC data for each storage battery pack is referred to as SOC1, SOC2,..., SOC6.
- the maximum value calculation unit 22b extracts the maximum value from the SOC data stored in the SOC holding memory 22a.
- the minimum value calculation unit 22c extracts the minimum value from the SOC data stored in the SOC holding memory 22a.
- the state transition management unit 22d determines whether the state of the power storage device 14 is to be a charge / discharge state, a charge state, or a discharge state based on the extracted maximum value and minimum value. Specifically, the maximum value and the minimum value are respectively compared with the reference level, and the state is determined based on the comparison result.
- the reference level includes an upper limit value of SOC and a lower limit value of SOC, and further includes a state transition threshold value.
- the SOC of the power storage unit 16 is used with a shallow charge / discharge depth in consideration of the life of the lithium ion secondary battery, and is preferably used in the range of 40% to 90%, for example.
- the lower limit value of SOC is 40%
- the upper limit value is 90%
- the extracted maximum value and minimum value are in the range of 40% or more and 90% or less
- the state is charged / discharged, and the minimum value is less than 40%.
- the SOC is increased as the charged state
- the maximum value exceeds 90% the SOC is decreased as the discharged state.
- charging / discharging, charging, and discharging are simply switched by setting an upper limit and a lower limit, the control becomes unstable. For example, if the lower limit is set to 40% and charging is performed when the minimum value is less than 40% and charging / discharging is performed when the minimum value is 40% or more, the minimum value is 39%.
- the state may change to the charge / discharge state, and the discharge may cause the minimum value to become less than 40% again and change to the charge state. Therefore, for example, 60% is set as the state transition threshold, and whether or not state transition is possible is determined using this state transition threshold.
- ⁇ Transition I> It is a transition from the charge / discharge state to the charge state, and transitions when the minimum value is less than 40%.
- ⁇ Transition II> It is a return transition from the charge state to the charge / discharge state, and when the maximum value reaches 60%, the discharge is started and the state is changed to the charge / discharge state.
- ⁇ Transition III> It is a transition from the charge / discharge state to the discharge state, and transitions when the maximum value exceeds 90%.
- ⁇ Transition IV> This is a return transition from the discharge state to the charge / discharge state, and when the minimum value reaches 60%, the charging is started and the state is changed to the charge / discharge state.
- a hysteresis characteristic is provided in which the threshold value when shifting from the charge / discharge state to the charge state / discharge state and the threshold value when returning from the charge state / discharge state to the charge / discharge state differ from each other.
- the threshold value when shifting from the charge / discharge state to the charge state / discharge state and the threshold value when returning from the charge state / discharge state to the charge / discharge state differ from each other.
- it is possible to stabilize the state transition with a hysteresis characteristic by switching the SOC to be compared with the above two threshold values between the case of using the maximum value and the case of using the minimum value. .
- FIG. 9 shows the state transition in the present embodiment in time series.
- FIG. 9A shows a default state where both the minimum value (min) and the maximum value (max) of the SOC1 to SOC6 of the power storage unit 16 are in the range of 40% or more and less than 90%, and the battery is in the charge / discharge state. is there.
- the range of SOC is a range shown with the code
- Charging proceeds from the state of FIG. 9 (b), and when the maximum value max of the SOC reaches 60% as shown in FIG. 9 (c), discharging is started and the charging state is restored to the charging / discharging state. It should be noted that the discharge is not started when the minimum value min reaches 40%.
- ⁇ Transition I> It is a transition from the charge / discharge state to the charge state, and transitions when the minimum value is less than 40%.
- ⁇ Transition II> This is a return transition from the charge state to the charge / discharge state, and when the minimum value reaches 60%, the discharge is started and the state changes to the charge / discharge state.
- ⁇ Transition III> It is a transition from the charge / discharge state to the discharge state, and transitions when the maximum value exceeds 90%.
- ⁇ Transition IV> It is a return transition from the discharge state to the charge / discharge state, and when the maximum value reaches 60%, charging starts and the state changes to the charge / discharge state. It is good.
- the reference level (upper limit value, lower limit value, state transition threshold value) may be stored in advance in the internal memory of the state transition management unit 2d, or may be read from the memory in the power management unit 22 and supplied.
- the reference level does not necessarily need to be fixed, and may be adjusted by the user according to the environment and operating conditions of the factory facility as appropriate.
- the state transition management unit 22d determines the state as described above and outputs the state to the charge / discharge control unit 22e.
- the charging / discharging control unit 22e controls charging / discharging by outputting a charging command or discharging command to the power system switching circuit 20, the switches SWa18, SWb28 based on the determined state.
- the DC load is supplied with power from the power storage device 14 or power from the external commercial power source 10, but from the power storage device 14 when the external commercial power source 10 is powered off. Will be covered by the electricity. Therefore, when charging / discharging is controlled so that the SOC of the power storage unit 16 is in the range of 40% or more and 90% or less in normal times, it is preferable to temporarily change this control range during a power failure. For example, the lower limit value of the SOC is changed downward from 40% to 10%. It is also preferable to change the state transition threshold at the same time as the lower limit value is changed.
- FIG. 10 shows a detailed block diagram of the power management unit 22 in this case.
- the state transition management unit 22d is supplied with a power failure detection signal from a device that monitors the state of the external commercial power supply 10, and the state transition management unit 22d uses the power failure detection signal as a power failure detection signal.
- the reference level is temporarily changed to determine the state.
- the reference levels are an upper limit value, a lower limit value, and a state transition threshold value
- the state transition management unit 22d changes the lower limit value and the state transition threshold value downward. For example, the lower limit value is changed downward from 40% to 10%, and the state transition threshold value is changed downward from 60% to 30%.
- ⁇ Transition I> It is a transition from the charge / discharge state to the charge state, and transitions when the minimum value is less than 10%.
- ⁇ Transition II> It is a return transition from the charge state to the charge / discharge state, and when the maximum value reaches 30%, the discharge is started and the state changes to the charge / discharge state.
- ⁇ Transition III> It is a transition from the charge / discharge state to the discharge state, and transitions when the maximum value exceeds 90%.
- ⁇ Transition IV> This is a return transition from the discharge state to the charge / discharge state, and when the minimum value reaches 60%, the charging is started and the state is changed to the charge / discharge state.
- Fig. 11 shows the state transition during a power failure in chronological order.
- the state changes from the charge / discharge state, which is the default state, to the charge state.
- the state transitions to the charged state at less than 40%. Therefore, even if the minimum SOC min is less than 40%, if it is 10% or more, the charge / discharge state is maintained, and power can be supplied to the DC load by discharge.
- Charging proceeds from the state of FIG. 11 (b), and when the maximum value max of SOC reaches 30% as shown in FIG. 11 (c), discharging is started and the charging state is restored to the charging / discharging state.
- the state changes to the charge / discharge state.
- the state changes to 30%, the state is changed to the charge / discharge state, whereby electric power can be supplied to the DC load by discharge at an earlier timing.
- the transition to the charge / discharge state at this timing may cause the SOC to decrease, but the charge / discharge state is maintained until the minimum value min is less than 10%.
- the power can be continuously supplied to the power source, and the DC load can be stably driven even during a power failure.
- ⁇ Transition I> It is a transition from the charge / discharge state to the charge state, and transitions when the minimum value is less than 10%.
- ⁇ Transition II> It is a return transition from the charge state to the charge / discharge state, and when the minimum value reaches 30%, the discharge is started and the state changes to the charge / discharge state.
- ⁇ Transition III> It is a transition from the charge / discharge state to the discharge state, and transitions when the maximum value exceeds 90%.
- ⁇ Transition IV> It is a return transition from the discharge state to the charge / discharge state, and when the maximum value reaches 60%, charging starts and the state changes to the charge / discharge state. It is good.
- the charge / discharge state can be continued as compared with the case of 40%. Electric power can be supplied to the DC load for a longer time.
- the burden on the lithium ion secondary battery is increased by that amount, but it can be said that the adverse effect on the battery life is small considering the frequency of occurrence of power outages.
- a power management system that controls charging / discharging of a power storage unit that is charged with power from a power source and discharges accumulated power to a load, and detects charging information for each of a plurality of storage battery packs included in the power storage unit In accordance with the detection means and the detected charging information, when the detected charging information is between a predetermined lower limit value and an upper limit value, the power storage device is placed in a charge / discharge state in which both charging and discharging are possible. The power storage unit is transitioned from the charge / discharge state to a chargeable state when charging is less than the lower limit value, and the power storage unit can only be discharged from the charge / discharge state when the detected charging information exceeds the upper limit value.
- Control means for transitioning to a discharge state, wherein the control means extracts a minimum value and a maximum value of the detected charging information for each of the plurality of storage battery packs, and the minimum value is smaller than the lower limit value.
- the power storage unit is transitioned from the charge / discharge state to the charge state, and when the extracted maximum value exceeds the upper limit value, the power storage unit is transitioned from the charge / discharge state to the discharge state, and the power When it is detected that the external commercial power source included in the power source is a power failure, the lower limit value is changed downward.
- the power management system controls charging / discharging of a power storage unit that is charged with power from a power source and discharges accumulated power to a load, and charging information is stored for each of a plurality of storage battery packs included in the power storage unit.
- the detection means to detect and the detected charging information, when the detected charging information is between a predetermined lower limit value and an upper limit value, the power storage device is put into a charge / discharge state in which both charging and discharging can be performed, and the detected charging
- the power storage unit is changed from the charge / discharge state to a chargeable state, and when the detected charge information exceeds the upper limit value, the power storage unit is discharged from the charge / discharge state.
- Control means for making a transition to a discharge state that can only be detected, and the control means extracts a minimum value and a maximum value of the detected charging information for each of the plurality of storage battery packs, and the minimum value is smaller than the lower limit value.
- the power storage unit is transitioned from the charge / discharge state to the charge state, and when the extracted maximum value exceeds the upper limit, the power storage unit is transitioned from the charge / discharge state to the discharge state, Further, when the detected charging information reaches a first threshold value larger than the lower limit value, the power storage unit is shifted from the charged state to the charge / discharge state, and the detected charging information is smaller than the upper limit value.
- the second threshold value is reached, the power storage unit is transitioned from the discharge state to the charge / discharge state, and when the external commercial power source included in the power source detects a power failure, the lower limit value is detected. And the first threshold value is changed downward.
- the upper limit value, the lower limit value, and the state transition threshold are exemplified as the reference levels for determining the state of charge / discharge.
- the threshold value (first threshold value) and the threshold value for transition IV (second threshold value) may be used.
- the threshold value for transition II is set to 50%
- the threshold value for transition IV is set to 70%, and the like.
- (threshold value for transition II)> (lower limit value) should be satisfied
- (threshold value for transition 1V) ⁇ (upper limit value) should be satisfied.
- the threshold value for Transition IV is maintained at 90%, the threshold value for Transition IV remains at 60%, although it has been changed from 60% to 30%.
- the upper limit value may be changed upward from 90% to 95%, for example, and the threshold value for transition IV may be changed upward from 60% to 80%, for example.
- the threshold value for transition II is changed from 60% to 30% in accordance with the change from the lower limit value of 40% to 10%. It may be maintained as it is.
- the solar cell (solar power generation system) 12 is an example, and besides this, natural energy such as a thermoelectric system using solar heat, wind power generation, wave power generation, or renewable energy may be used. it can.
- the relative charge rate SOC (%) with the fully charged state being 100 is used as the charge information for each of the plurality of storage battery packs 17 included in the power storage unit 16, but the charge rate SOC (% ) May be used instead of the remaining capacity value (A ⁇ h).
- FIG. 12 shows a flowchart when the charge / discharge control based on the SOC and the charge / discharge control based on the time information are executed.
- the power management unit 22 performs charge / discharge control based on the time information described below.
- step S51 it is determined whether or not there are variations in the voltages of the plurality of storage battery packs 17.
- the plurality of storage battery packs 17 may have distinctive characteristics and may have characteristic variations while charging and discharging are repeated. If the charging state or the discharging state is forcibly performed in a state where the variation occurs, the specific storage battery pack 17 may be overcharged or overdischarged.
- step S51 determines whether there is a variation. If it is determined in step S51 that there is a variation, the process proceeds to step S53, and control is performed so as to eliminate the variation in voltage of the plurality of storage battery packs 17. For example, by turning off the discharge switch and the charge switch illustrated in FIG. 3, the voltage variations of the plurality of storage battery packs 17 are eliminated. By turning off the discharge switch and the charge switch, current flows from the high-voltage storage battery pack 17 to the low-voltage storage battery pack 17, and the voltage variation is reduced. Control for eliminating the variation is performed until it is determined in step S51 that there is no variation. The determination of the variation of the plurality of storage battery packs 17 is obtained when the voltage value for each storage battery pack 17 is acquired, and the difference between the maximum value and the minimum value is larger than a predetermined threshold value, it is determined that there is a variation.
- step S51 When it is determined in step S51 that the voltages of the plurality of storage battery packs 17 are not varied, the process proceeds to step S55, and control using the time information is started.
- Time 1 and time 2 are set in advance in the power management unit 22.
- step S57 it is determined whether or not the current time is included in a period determined by time 1 and time 2.
- step S57 If the current time is included in the predetermined period in step S57, the process proceeds to step S59.
- step S59 control is performed so that the battery is forcibly charged regardless of the SOC of power storage unit 16.
- the charging in the step S57 is performed only by the solar cell 12.
- step S61 the charge / discharge control using the current time is not performed, and the charge / discharge control based on the SOC (normal charge / discharge control) is continued.
- the charging state is forcibly set regardless of the SOC of the power storage unit 16 when the period determined by the time 1 and the time 2 is reached, and charging based on the normal SOC is performed during the other periods. Discharge control can be performed.
- the power generated by the solar cell 12 can be efficiently stored in the power storage unit 16 by performing the charge / discharge control shown in FIG. For example, when the time 1 and the time 2 are set so that the generated power of the solar battery 12 includes the largest time in one day, a large amount of power can be charged in the power storage unit 16 in a short time.
- the time 1 and the time 2 are set so as to include a time during which the power consumption due to the DC load is low in one day, the power charged in the power storage unit 16 from the solar battery 12 is used for a time when the power consumption is high be able to. Thereby, a change in power consumption of the external commercial power supply 10 can be suppressed, and the power consumption of the external commercial power supply 10 at the peak time can be reduced.
- control using one set of time 1 and time 2 has been described, but control using multiple sets of time 1 and time 2 may be performed.
- charging in the period from time 1 to time 2 uses the power generation of the solar battery 12
- other natural energy or renewable energy may be used. In that case, it is preferable to set time 1 and time 2 suitable for the energy source.
Landscapes
- 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)
Abstract
Description
まず、本実施形態における電力管理システムの基本構成について説明する。
次に、以上のような構成において、システムの基本的な充放電制御について説明する。
図8に、電力管理部22の詳細構成ブロック図を示す。電力管理部22は、SOC保持メモリ22aと、最大値算出部22bと、最小値算出部22cと、状態遷移管理部22dと、充放電制御部22eを含む。
<遷移I>
充放電状態から充電状態への遷移であり、最小値が40%未満となった場合に遷移する。
<遷移II>
充電状態から充放電状態への復帰遷移であり、最大値が60%に達した場合に放電を開始して充放電状態に遷移する。
<遷移III>
充放電状態から放電状態への遷移であり、最大値が90%を超える場合に遷移する。
<遷移IV>
放電状態から充放電状態への復帰遷移であり、最小値が60%に達した場合に充電を開始して充放電状態に遷移する。
<遷移I>
充放電状態から充電状態への遷移であり、最小値が40%未満となった場合に遷移する。
<遷移II>
充電状態から充放電状態への復帰遷移であり、最小値が60%に達した場合に放電を開始して充放電状態に遷移する。
<遷移III>
充放電状態から放電状態への遷移であり、最大値が90%を超える場合に遷移する。
<遷移IV>
放電状態から充放電状態への復帰遷移であり、最大値が60%に達した場合に充電を開始して充放電状態に遷移する。
としてもよい。
上記のように、直流負荷には、蓄電装置14からの電力あるいは外部商用電源10からの電力が供給されるが、外部商用電源10が停電時には蓄電装置14からの電力で賄うことになる。従って、平常時には蓄電部16のSOCが40%以上90%以下の範囲内となるように充放電を制御するところ、停電時には一時的にこの制御範囲を変更することが好適である。例えば、SOCの下限値を40%から10%に下方変更する等である。また、下限値の変更に伴い、状態遷移しきい値も同時に変更することも好適である。
充放電状態から充電状態への遷移であり、最小値が10%未満となった場合に遷移する。
<遷移II>
充電状態から充放電状態への復帰遷移であり、最大値が30%に達した場合に放電を開始して充放電状態に遷移する。
<遷移III>
充放電状態から放電状態への遷移であり、最大値が90%を超える場合に遷移する。
<遷移IV>
放電状態から充放電状態への復帰遷移であり、最小値が60%に達した場合に充電を開始して充放電状態に遷移する。
<遷移I>
充放電状態から充電状態への遷移であり、最小値が10%未満となった場合に遷移する。
<遷移II>
充電状態から充放電状態への復帰遷移であり、最小値が30%に達した場合に放電を開始して充放電状態に遷移する。
<遷移III>
充放電状態から放電状態への遷移であり、最大値が90%を超える場合に遷移する。
<遷移IV>
放電状態から充放電状態への復帰遷移であり、最大値が60%に達した場合に充電を開始して充放電状態に遷移する。
としてもよい。
以上、本発明の実施形態について説明したが、本発明はこれに限定されるものではなく、種々の変形が可能である。
以下には、既に説明したSOCに基づく充放電制御に加え、時刻情報に基づいて充放電制御を行う方法を説明する。図12に、SOCに基づく充放電制御と時刻情報に基づく充放電制御とを実行するときのフローチャートを示す。電力管理部22が、以下に記載の時刻情報に基づいた充放電制御を行う。
Claims (10)
- 電力源からの電力により充電し、かつ蓄積した電力を負荷に放電する蓄電部の充放電を制御する電力管理システムであって、
前記蓄電部に含まれる複数の蓄電池パック毎に充電情報を検出する検出手段と、
検出した充電状態に応じ、検出した充電情報が所定の下限値と上限値の間にある場合に前記蓄電部を充電及び放電がともに可能な充放電状態とし、検出した充電情報が前記下限値より小さい場合に前記蓄電部を前記充放電状態から充電のみ可能な充電状態に遷移させ、検出した充電情報が前記上限値を超える場合に前記蓄電部を前記充放電状態から放電のみ可能な放電状態に遷移させる制御手段と、
を備えることを特徴とする電力管理システム。 - 請求項1記載の電力管理システムにおいて、
前記制御手段は、検出した複数の蓄電池パック毎の充電情報の最小値及び最大値を抽出し、前記最小値が前記下限値より小さい場合に前記蓄電部を前記充放電状態から前記充電状態に遷移させ、抽出した最大値が前記上限値を超える場合に前記蓄電部を前記充放電状態から前記放電状態に遷移させる
ことを特徴とする電力管理システム。 - 請求項2記載の電力管理システムにおいて、
前記制御手段は、さらに、検出した充電情報が前記下限値よりも大きな第1しきい値に達した場合に前記蓄電部を前記充電状態から前記充放電状態に遷移させ、検出した充電情報が前記上限値よりも小さい第2しきい値に達した場合に前記蓄電部を前記放電状態から前記充放電状態に遷移させる
ことを特徴とする電力管理システム。 - 請求項3記載の電力管理システムにおいて、
前記制御手段は、前記最大値が前記第1しきい値に達した場合に前記蓄電部を前記充電状態から前記充放電状態に遷移させ、前記最小値が前記第2しきい値に達した場合に前記蓄電部を前記放電状態から前記充放電状態に遷移させる
ことを特徴とする電力管理システム。 - 請求項3記載の電力管理システムにおいて、
前記制御手段は、前記最小値が前記第1しきい値に達した場合に前記蓄電部を前記充電状態から前記充放電状態に遷移させ、前記最大値が前記第2しきい値に達した場合に前記蓄電部を前記放電状態から前記充放電状態に遷移させる
ことを特徴とする電力管理システム。 - 請求項1~5のいずれかに記載の電力管理システムにおいて、
前記制御手段は、
前記電力源と前記蓄電部とを接続する充電スイッチと、前記蓄電部と前記負荷とを接続する放電スイッチを含む電力系統切替部と、
検出した充電情報に応じて前記充電スイッチと前記放電スイッチを切替制御し、充電スイッチ及び放電スイッチをともにオンすることで前記蓄電部を前記充放電状態に制御し、前記充電スイッチのみをオンすることで前記蓄電部を前記充電状態に制御し、前記放電スイッチのみをオンすることで前記蓄電部を前記放電状態に制御する電力管理部と、
を備えることを特徴とする電力管理システム。 - 請求項6記載の電力管理システムにおいて、
前記電力源は、外部商用電源と太陽光発電システムを含み、
前記太陽光発電システムと前記蓄電部は前記充電スイッチ及び第1切替スイッチを介して接続され、
前記外部商用電源及び前記蓄電部は第2切替スイッチを介して前記負荷に接続され、
前記電力管理部は、前記充放電状態では前記充電スイッチをオンするとともに前記第1切替スイッチを前記蓄電部側に切り替えて充電可能とし、かつ、前記放電スイッチをオンするとともに前記第2切替スイッチを前記蓄電部側に切り替えて放電可能とし、前記充電状態では前記充電スイッチをオンするとともに前記第1切替スイッチを前記蓄電部側に切り替え、かつ、前記放電スイッチをオフするとともに前記第2切替スイッチを前記外部商用電源側に切り替えて充電可能とし、前記放電状態では前記充電スイッチをオフするとともに前記第1切替スイッチを外部商用電源側に切り替え、かつ、前記放電スイッチをオンするとともに前記第2切替スイッチを前記蓄電部側に切り替えて放電可能とすべく制御する
ことを特徴とする電力管理システム。 - 請求項1記載の電力管理システムであって、
前記制御手段は、現在時刻が予め決められた期間に含まれるとき、前記蓄電部の充電情報に関係なく前記蓄電部を前記充電状態とする
ことを特徴とする電力管理システム。 - 電力源からの電力により充電し、かつ蓄積した電力を負荷に放電する蓄電部の充放電を制御する電力管理システムであって、
前記蓄電部に含まれる複数の蓄電池パック毎に充電情報を検出する検出手段と、
前記蓄電部を充電及び放電がともに可能な充放電状態、充電のみ可能な充電状態、あるいは放電のみ可能な放電状態とする制御手段と、
を備え、前記制御手段は、
前記検出手段によって検出した充電情報に応じて、前記充放電状態、前記充電状態、あるいは前記放電状態を選択するとともに、
現在時刻が予め決められた期間に含まれるとき、前記蓄電部の充電情報に関係なく前記蓄電部を前記充電状態とする
を備えることを特徴とする電力管理システム。 - 請求項9記載の電力管理システムであって、
前記電力源は、外部商用電源と太陽光発電システムを含み、
前記現在時刻が前記予め決められた期間に含まれるときの前記充電状態は、前記太陽光発電システムでの発電電力を前記蓄電部に充電することを特徴とする電力管理システム。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2011800420341A CN103081282A (zh) | 2010-10-15 | 2011-08-31 | 电力管理系统 |
US13/820,194 US20130187465A1 (en) | 2010-10-15 | 2011-08-31 | Power management system |
EP11832356.7A EP2629387A4 (en) | 2010-10-15 | 2011-08-31 | ELECTRICITY MANAGEMENT SYSTEM |
JP2012538602A JPWO2012049915A1 (ja) | 2010-10-15 | 2011-08-31 | 電力管理システム |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2010-232980 | 2010-10-15 | ||
JP2010232980 | 2010-10-15 | ||
JP2011-026651 | 2011-02-10 | ||
JP2011026651 | 2011-02-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2012049915A1 true WO2012049915A1 (ja) | 2012-04-19 |
Family
ID=45938150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2011/069826 WO2012049915A1 (ja) | 2010-10-15 | 2011-08-31 | 電力管理システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US20130187465A1 (ja) |
EP (1) | EP2629387A4 (ja) |
JP (1) | JPWO2012049915A1 (ja) |
CN (1) | CN103081282A (ja) |
WO (1) | WO2012049915A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013255404A (ja) * | 2012-06-08 | 2013-12-19 | Wako Giken Kk | マルチ充電装置と同装置を使用した災害対応型非常用電源装置 |
JP2014023276A (ja) * | 2012-07-18 | 2014-02-03 | Toyota Home Kk | 蓄電池制御システム |
JP2014054068A (ja) * | 2012-09-06 | 2014-03-20 | Toshiba Corp | 充電装置および充電システム |
JP2014103819A (ja) * | 2012-11-22 | 2014-06-05 | Nemoto Denko Co Ltd | 充電装置、充電方法及び電力供給システムとその蓄電残量計測方法 |
EP2947750A4 (en) * | 2013-01-17 | 2017-01-18 | Sony Corporation | Electrical storage apparatus and startup method |
JP2017127173A (ja) * | 2016-01-14 | 2017-07-20 | 凌和電子株式会社 | 蓄電装置 |
WO2020186501A1 (zh) * | 2019-03-21 | 2020-09-24 | 陈赐民 | 不断电空调系统 |
KR20210076609A (ko) * | 2019-12-16 | 2021-06-24 | 한국항공우주연구원 | 배터리 충전 장치 |
Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9281696B2 (en) * | 2013-02-27 | 2016-03-08 | Fu-Sheng Tsai | Current steering circuit and current steering method for controlling branch current flowing through branch |
JP2014241692A (ja) * | 2013-06-12 | 2014-12-25 | 住友電気工業株式会社 | 蓄電池用変換装置、電力供給システムおよび電力供給制御方法 |
DE102014201054A1 (de) * | 2014-01-22 | 2015-07-23 | Robert Bosch Gmbh | Verfahren und Vorrichtung zum Betreiben einer Batterie, insbesondere einer Lithium Ionen Batterie, in einem Verbraucher |
CN103956529B (zh) * | 2014-04-30 | 2017-02-15 | 华为技术有限公司 | 一种供电方法、供电装置及供电系统 |
CN104836267B (zh) * | 2014-07-28 | 2017-11-03 | 北汽福田汽车股份有限公司 | 充放电控制电路 |
CN105743206A (zh) * | 2016-04-27 | 2016-07-06 | 中国人民解放军国防科学技术大学 | 一种基于四级电压触发机制的星载电源系统 |
CN106849232B (zh) * | 2017-01-22 | 2024-02-20 | 广东博力威科技股份有限公司 | 一种实现电动车多块电池组自动切换的方法和系统 |
JP6931811B2 (ja) * | 2017-07-07 | 2021-09-08 | パナソニックIpマネジメント株式会社 | 蓄電池ユニット |
JP6928347B2 (ja) * | 2017-08-02 | 2021-09-01 | NExT−e Solutions株式会社 | 管理装置、蓄電装置、蓄電システム、及び、電気機器 |
CN109193885B (zh) * | 2018-09-07 | 2021-04-30 | 浙江艾罗网络能源技术股份有限公司 | 光伏储能逆变器的控制系统 |
US11892893B2 (en) | 2019-10-01 | 2024-02-06 | Microsoft Technology Licensing, Llc | Systems and methods for thermal system management |
CN110649710A (zh) * | 2019-10-18 | 2020-01-03 | 国网江苏省电力有限公司盐城供电分公司 | 一种基于太阳能供电的储能智能控制系统 |
CN111103549B (zh) * | 2019-12-16 | 2022-11-08 | 中车大连机车车辆有限公司 | 一种混合动力机车电池系统检修需求判断方法 |
US20230396074A1 (en) * | 2020-09-29 | 2023-12-07 | Panasonic Intellectual Property Management Co., Ltd. | Management device and power supply system |
EP4002633A1 (en) * | 2020-11-18 | 2022-05-25 | Primearth EV Energy Co., Ltd. | Power supply system |
US20230343980A1 (en) * | 2022-04-26 | 2023-10-26 | Ess Tech, Inc. | Methods and systems for operating redox flow battery |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02136445U (ja) * | 1989-04-14 | 1990-11-14 | ||
JP2007124811A (ja) * | 2005-10-28 | 2007-05-17 | Seiko Electric Co Ltd | 電力貯蔵システム、ルート発生装置及びルート発生方法 |
JP2007330057A (ja) * | 2006-06-08 | 2007-12-20 | Kawasaki Plant Systems Ltd | 二次電池付太陽光システムの充電制御方法 |
JP3162887U (ja) * | 2010-04-19 | 2010-09-24 | 佐伯 和也 | 充放電システム |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6377028B1 (en) * | 1990-10-23 | 2002-04-23 | Texas Instruments Incorporated | System for charging monitoring batteries for a microprocessor based method |
JP3398304B2 (ja) * | 1997-07-31 | 2003-04-21 | 東芝電池株式会社 | 二次電池の電圧測定回路およびこれを用いた保護回路 |
US7348760B2 (en) * | 2000-09-21 | 2008-03-25 | O2Micro International Limited | Power management topologies |
US6353304B1 (en) * | 2001-01-19 | 2002-03-05 | Sandia Corporation | Optimal management of batteries in electric systems |
JP4292721B2 (ja) * | 2001-02-14 | 2009-07-08 | 株式会社日本自動車部品総合研究所 | ハイブリッド車の電池状態制御方法 |
JP2003217685A (ja) * | 2002-01-28 | 2003-07-31 | Nec Infrontia Corp | バッテリパック |
JP4130186B2 (ja) * | 2004-11-12 | 2008-08-06 | 三洋電機株式会社 | パック電池 |
US8310094B2 (en) * | 2006-01-27 | 2012-11-13 | Sharp Kabushiki Kaisha | Power supply system |
JP4967601B2 (ja) * | 2006-10-31 | 2012-07-04 | ソニー株式会社 | 電子機器、電子機器の充電方法 |
US7598706B2 (en) * | 2007-01-26 | 2009-10-06 | General Electric Company | Cell balancing battery pack and method of balancing the cells of a battery |
US8143854B2 (en) * | 2007-05-11 | 2012-03-27 | Panasonic Ev Energy Co., Ltd. | Adjusting method of battery pack and adjusting method of battery pack with controller |
US8650411B2 (en) * | 2008-09-07 | 2014-02-11 | Schweitzer Engineering Laboratories Inc. | Energy management for an electronic device |
JP5210776B2 (ja) * | 2008-09-25 | 2013-06-12 | 株式会社日立製作所 | リチウムイオン二次電池の充放電制御装置 |
JP2010246225A (ja) * | 2009-04-03 | 2010-10-28 | Sony Corp | 電池パックおよび充電方法 |
CN201594761U (zh) * | 2009-09-21 | 2010-09-29 | 深圳市兴日生实业有限公司 | 太阳能和市电自动切换的水泵不间断供电电路 |
CN101710725A (zh) * | 2009-11-30 | 2010-05-19 | 张佳宾 | 自适应发、蓄电系统 |
-
2011
- 2011-08-31 WO PCT/JP2011/069826 patent/WO2012049915A1/ja active Application Filing
- 2011-08-31 CN CN2011800420341A patent/CN103081282A/zh active Pending
- 2011-08-31 US US13/820,194 patent/US20130187465A1/en not_active Abandoned
- 2011-08-31 EP EP11832356.7A patent/EP2629387A4/en not_active Withdrawn
- 2011-08-31 JP JP2012538602A patent/JPWO2012049915A1/ja active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02136445U (ja) * | 1989-04-14 | 1990-11-14 | ||
JP2007124811A (ja) * | 2005-10-28 | 2007-05-17 | Seiko Electric Co Ltd | 電力貯蔵システム、ルート発生装置及びルート発生方法 |
JP2007330057A (ja) * | 2006-06-08 | 2007-12-20 | Kawasaki Plant Systems Ltd | 二次電池付太陽光システムの充電制御方法 |
JP3162887U (ja) * | 2010-04-19 | 2010-09-24 | 佐伯 和也 | 充放電システム |
Non-Patent Citations (1)
Title |
---|
See also references of EP2629387A4 * |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2013255404A (ja) * | 2012-06-08 | 2013-12-19 | Wako Giken Kk | マルチ充電装置と同装置を使用した災害対応型非常用電源装置 |
JP2014023276A (ja) * | 2012-07-18 | 2014-02-03 | Toyota Home Kk | 蓄電池制御システム |
JP2014054068A (ja) * | 2012-09-06 | 2014-03-20 | Toshiba Corp | 充電装置および充電システム |
JP2014103819A (ja) * | 2012-11-22 | 2014-06-05 | Nemoto Denko Co Ltd | 充電装置、充電方法及び電力供給システムとその蓄電残量計測方法 |
EP2947750A4 (en) * | 2013-01-17 | 2017-01-18 | Sony Corporation | Electrical storage apparatus and startup method |
JP2017127173A (ja) * | 2016-01-14 | 2017-07-20 | 凌和電子株式会社 | 蓄電装置 |
WO2020186501A1 (zh) * | 2019-03-21 | 2020-09-24 | 陈赐民 | 不断电空调系统 |
KR20210076609A (ko) * | 2019-12-16 | 2021-06-24 | 한국항공우주연구원 | 배터리 충전 장치 |
KR102288879B1 (ko) | 2019-12-16 | 2021-08-12 | 한국항공우주연구원 | 배터리 충전 장치 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2012049915A1 (ja) | 2014-02-24 |
US20130187465A1 (en) | 2013-07-25 |
EP2629387A4 (en) | 2016-11-23 |
EP2629387A1 (en) | 2013-08-21 |
CN103081282A (zh) | 2013-05-01 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2012049915A1 (ja) | 電力管理システム | |
EP2884575B1 (en) | Battery system and method of connecting battery module to a battery rack | |
US9088164B2 (en) | Battery system, controlling method of the same, and power storage system including the battery pack | |
US8963499B2 (en) | Battery pack, method of controlling the same, and energy storage system including the battery pack | |
US9118191B2 (en) | Cell balancing method, cell balancing device, and energy storage system including the cell balancing device | |
KR101648239B1 (ko) | 돌입 전류를 저감하는 에너지 저장 장치 및 그 방법 | |
JP5583781B2 (ja) | 電力管理システム | |
CN103094989B (zh) | 用于管理电池单体的方法、以及能量存储系统 | |
KR101181822B1 (ko) | 배터리 관리 시스템 및 배터리 관리 방법, 이를 이용하는 전력 저장 장치 | |
KR101212200B1 (ko) | 배터리 관리 시스템, 배터리 분극 전압 제거 방법 및 배터리 충전 상태 추정 방법 | |
EP2582013A2 (en) | Energy storage system and control method | |
US20130002026A1 (en) | Energy storage apparatus and energy storage system | |
US20150222117A1 (en) | Battery tray, battery rack, energy system, and method of operating the battery tray | |
JP2014230488A (ja) | バッテリラックおよびその駆動方法 | |
KR20130062894A (ko) | 에너지 저장 시스템 및 그 제어방법 | |
KR20180014957A (ko) | 배터리 팩 및 이를 포함하는 에너지 저장 시스템 | |
KR20130049706A (ko) | 배터리 관리 장치, 배터리 셀 밸런싱 방법, 및 전력 저장 시스템 | |
JP2024009124A (ja) | 電力制御装置、蓄電池システム、蓄電池の充電電力制御方法及びプログラム | |
JP2013042598A (ja) | 充放電制御装置 | |
KR20150085227A (ko) | 에너지 저장 시스템 및 그의 제어 방법 | |
JP4137784B2 (ja) | 太陽光発電装置制御システム | |
KR102151652B1 (ko) | 척컨버터 토폴로지를 이용한 리튬이온 전지 셀밸런싱 장치 | |
US10916946B2 (en) | Energy storage apparatus | |
KR101476337B1 (ko) | 에너지 저장 시스템 및 그 제어 방법 | |
KR20140058770A (ko) | 전력 관리 시스템의 동작 모드 결정 방법 및 시스템 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 201180042034.1 Country of ref document: CN |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11832356 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2012538602 Country of ref document: JP Kind code of ref document: A |
|
REEP | Request for entry into the european phase |
Ref document number: 2011832356 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2011832356 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 13820194 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |