WO2012050163A1 - 蓄電システム用の自己診断装置 - Google Patents
蓄電システム用の自己診断装置 Download PDFInfo
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- WO2012050163A1 WO2012050163A1 PCT/JP2011/073551 JP2011073551W WO2012050163A1 WO 2012050163 A1 WO2012050163 A1 WO 2012050163A1 JP 2011073551 W JP2011073551 W JP 2011073551W WO 2012050163 A1 WO2012050163 A1 WO 2012050163A1
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- power storage
- diagnosis
- state
- self
- storage system
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- 238000003745 diagnosis Methods 0.000 claims abstract description 93
- 238000012544 monitoring process Methods 0.000 claims abstract description 63
- 230000002093 peripheral effect Effects 0.000 claims abstract description 22
- 238000004092 self-diagnosis Methods 0.000 claims description 108
- 230000002159 abnormal effect Effects 0.000 claims description 62
- 230000005856 abnormality Effects 0.000 claims description 46
- 238000007600 charging Methods 0.000 claims description 43
- 238000006243 chemical reaction Methods 0.000 claims description 23
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- 208000028659 discharge Diseases 0.000 description 154
- 238000000034 method Methods 0.000 description 60
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- 230000000737 periodic effect Effects 0.000 description 35
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- 238000010586 diagram Methods 0.000 description 20
- 238000010248 power generation Methods 0.000 description 20
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- 238000004891 communication Methods 0.000 description 17
- 238000012806 monitoring device Methods 0.000 description 13
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- 230000008569 process Effects 0.000 description 6
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- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 230000007423 decrease Effects 0.000 description 5
- 238000002405 diagnostic procedure Methods 0.000 description 5
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000007175 bidirectional communication Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- OJIJEKBXJYRIBZ-UHFFFAOYSA-N cadmium nickel Chemical compound [Ni].[Cd] OJIJEKBXJYRIBZ-UHFFFAOYSA-N 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
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- 230000014509 gene expression Effects 0.000 description 1
- 229910000652 nickel hydride Inorganic materials 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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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
-
- 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
- H01M10/4207—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells 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
- H01M10/44—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
- H01M10/46—Accumulators structurally combined with charging apparatus
- H01M10/465—Accumulators structurally combined with charging apparatus with solar battery as charging system
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0013—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries acting upon several batteries simultaneously or sequentially
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S50/00—Monitoring or testing of PV systems, e.g. load balancing or fault identification
- H02S50/10—Testing of PV devices, e.g. of PV modules or single PV 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
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
-
- 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 self-diagnosis device for a power storage system, and more particularly to a self-diagnosis device for a power storage system that performs self-diagnosis at the time of startup of a power storage system including many components in addition to the power storage device.
- Energy is effectively used by using power storage devices such as secondary batteries.
- power storage devices such as secondary batteries.
- photovoltaic power generation systems have been actively developed as environmentally friendly clean energy, but since photoelectric conversion modules that convert sunlight into electric power do not have a storage function, they can be combined with secondary batteries.
- energy is effectively utilized by charge / discharge control in which power generated by a photoelectric conversion module is charged in a secondary battery and discharged from the secondary battery in response to a request from an external load or the like.
- Patent Document 1 as a power storage system using a secondary battery such as a lithium ion secondary battery, self-diagnosis means for checking whether there is an abnormality in the power storage system, the voltage between terminals of the secondary battery, and the battery flow Means for measuring the current and temperature related to the battery, charge / discharge control means connected to the positive charge line, system control means, an inverter connected to the charge / discharge control means, and a device supplied with electric power from the inverter
- a configuration including a communication unit for equipment that performs bidirectional communication is disclosed.
- Patent Document 2 in a power storage system using 100 to 150 lithium ion secondary batteries, a microcomputer that receives a signal from a current detection circuit and detects the amount of charge and the voltage of each lithium ion secondary battery are excessive. It is stated that when the discharge set value is exceeded, the main switching element is turned off and the starting switching transistor is turned off. Further, it is stated that when the voltage of each lithium ion secondary battery exceeds the overcharge set value, a bypass circuit is provided so as not to exceed the withstand voltage even when the main switching element is turned off.
- the power storage device When performing abnormality monitoring or abnormality diagnosis in a power storage system, if the procedure is mistaken and the power storage device is overcharged or overdischarged, or the current exceeds the rating for each storage battery module constituting the power storage device Can flow, the power storage device can be damaged.
- An object of the present invention is to provide a self-diagnosis device for a power storage system that makes it possible to perform a self-diagnosis at startup while suppressing damage to the power storage device.
- a self-diagnosis device for a power storage system includes a power storage device, a charge / discharge switch device arranged to be connected to the power storage device, and a power storage device breaker provided between the power storage device and the charge / discharge switch device.
- a self-diagnosis device for a power storage system including a peripheral item diagnosis unit that diagnoses a peripheral diagnosis item with the power storage device breaker shut off.
- the power storage device can be prevented from being accidentally damaged at the stage of self-diagnosis of the power storage system by the self-diagnosis device for the power storage system.
- FIG. 3 is a flowchart illustrating a diagnostic procedure performed using the power storage device subsequent to FIG. 2. It is a flowchart which shows the procedure of the electrical storage device breaker diagnosis of FIG. It is a flowchart which shows the procedure of the load side breaker diagnosis of FIG. It is a flowchart which shows the procedure of the converter diagnosis of FIG. It is a flowchart which shows the procedure of the switching apparatus diagnosis of FIG. It is a flowchart which shows the procedure of the electrical storage apparatus diagnosis of FIG.
- FIG. 4 is a flowchart showing a procedure for determining a discharge switch operation in the embodiment according to the invention.
- it is a figure explaining normal operation mode and standby mode.
- it is a figure explaining the setting conditions of normal operation mode.
- it is a figure explaining the setting conditions of standby mode.
- it is a figure explaining the effect of using standby mode.
- it is a figure explaining the other effect of using standby mode.
- secondary batteries such as a lithium ion secondary battery, a nickel hydride battery, and a nickel cadmium battery, can be used.
- a secondary battery is a battery that can be charged and discharged.
- solar power generation power and external commercial power will be described as power sources, but other power sources such as wind power generation power may be used.
- the number of storage batteries constituting the power storage device described below the number of photovoltaic power generation modules constituting the photoelectric conversion module for photovoltaic power generation, voltage, current, SOC (State Of Charge) value, etc. It is an example for this, and it can change suitably according to the specification etc. of an electrical storage system.
- FIG. 1 is a diagram illustrating the configuration of the power storage system 10.
- the power storage system 10 includes a power storage device 30, a load-side breaker 26, a power storage device breaker 50, a charge / discharge switch device 60, and a control block 80.
- an external commercial power source 12 as a power source
- a photoelectric conversion module 14 a direct current suitable for an AC load 16, a DC load 18, and a DC load 18 as loads.
- a DC / DC converter 28 for converting to voltage is shown.
- AC is indicated as AC and DC as DC, depending on the case.
- a thick solid line indicates a power flow
- a thin solid line with an arrow indicates a signal flow.
- the AC load 16 is a device driven by AC power, and is, for example, a mechanical device such as a rotating electrical machine, an air conditioner, a processing machine, or an assembly machine.
- the DC load 18 is a device driven by direct current power, and is, for example, an office device, a lighting device, or the like. These are collectively called external loads.
- the DC / DC converter 28 is, for example, a voltage converter that makes 96V DC power supplied from the power storage device 30 about 12V DC power suitable for office equipment and the like.
- External commercial power supply 12 as a power source is a single-phase or three-phase AC power source.
- the photoelectric conversion module 14 as a power source is a combination of a plurality of photovoltaic power generation modules.
- the four sets of photovoltaic power generation blocks are used in parallel to each other.
- an output voltage of about 240 V can be obtained, and three solar power generation modules arranged in each solar power generation block are connected.
- an output voltage of about 120V can be obtained.
- the switching device 20 is a connection switching device having a function of changing the connection state of a plurality of photovoltaic power generation modules constituting the photoelectric conversion module 14 and switching the output voltage between about 240 V and about 120 V as described above. . Since the output voltage is switched by switching, it can be called a voltage switching device from that viewpoint. Further, in a broad sense, the configuration of the power source is changed, and the photovoltaic power generation is converted into a 240V DC power source or a 120V DC power source, so that it can be considered as one type of power conversion device.
- the switching device 20 can connect the generated power of the photoelectric conversion module 14 to the inverter 22 side or the charge / discharge switch device 60 so as to be selectively switchable.
- the photoelectric conversion module 14 When the photoelectric conversion module 14 is connected to the inverter 22 side, six photovoltaic power generation modules are connected in series (series connection form), and the power generated in the photovoltaic power generation module is converted to a relatively high voltage at the inverter 22. Can be supplied to. In the serial connection form, the photoelectric conversion module 14 and the charge / discharge switch device 60 are electrically disconnected. When the photoelectric conversion module 14 is connected to the charge / discharge switch device 60, three photovoltaic power generation modules are connected in series, these are connected in parallel (parallel connection form), and the electric power generated in the photovoltaic power generation module Can be supplied to the charge / discharge switch device 60 at a relatively low voltage. In the parallel connection form, the photoelectric conversion module 14 and the inverter 22 are electrically disconnected.
- the switching device 20 and the control block 80 are connected by a communication line, and switching between the serial connection form and the parallel connection form is performed by a command from the control block 80, and information indicating which connection form is currently in use is provided. It is transmitted to the control block 80.
- the inverter 22 When power is supplied to the inverter 22, the inverter 22 is connected in series with an output operating voltage of about 240V.
- the inverter 22 is a power converter that converts DC power into AC power, and can be considered as one type of power conversion device in a broad sense.
- the inverter 22 can convert about 240 V DC power from the switching device 20 into AC power and supply it to the AC load 16. In some cases, so-called reverse tide or power sale can be performed to return to the external commercial power source side.
- the AC / DC converter 24 is a power converter that converts AC power into DC power, and can be considered as one type of power conversion device in a broad sense.
- the AC / DC converter 24 converts AC power from the external commercial power supply 12 or AC power converted by the inverter 22 into DC power as backup power when DC power is not supplied from the power storage device 30 to the DC load 18. Is.
- the DC power is supplied to the DC load 18 via the AC / DC converter 24 when the amount of charge of the power storage device 30 is reduced and discharging is prohibited (when only a state of charge described later is entered).
- the AC / DC converter 24 and the control block 80 are connected by a communication line capable of exchanging digital data, and the control block 80 transmits operating condition settings, output DC power command value (for example, output voltage value) settings, and the like. Then, from the AC / DC converter 24, operation state data and the like are transmitted to the control block 80.
- the load-side breaker 26 is a power interruption device provided between the power storage system 10 and the DC load 18 and on the DC load 18 side.
- the load-side breaker 26 supplies the DC power from the power storage device 30 or the like to the DC load 18 via the DC / DC converter 28, the load-side breaker 26 reduces the power flow when a current exceeding a predetermined cutoff threshold flows. Can be blocked.
- the load-side breaker 26 can be a manual type, and the user needs to manually perform a switch operation in order to switch from the connected energized state to the disconnected state, or from the disconnected state to the energized state.
- the load-side breaker 26 and the control block 80 are connected by a communication line that transmits a status signal. In the control block 80, it can be seen whether the load-side breaker 26 is in a connected state or a disconnected state. Needless to say, the load-type breaker 26 may be automatically cut off based on a cut-off signal from the control block 80. However, in order to ensure the protection of the DC load 18, the manual type is better.
- the charge / discharge switch device 60 is a charge / discharge switching device connected to the power storage device 30 for charging from the power source and discharging from the power storage device 30 to an external load. Specifically, it is arranged between the switching device 20 and the power storage device 30 as the charging path side, and between the load side breaker 26 and the power storage device 30 as the discharge path side.
- the charging / discharging switch device 60 includes a charging switch 70 on the charging path side, a discharging switch 74 on the discharging path side, and a diode group 68 that prevents backflow during charging / discharging.
- current / voltage detectors 62, 64, 66 on the power storage device side are provided on the power storage device 30 side, and a current / voltage on the charge side is provided on the switching device 20 side of the charge switch 70.
- a voltage detector 72 is provided, and a discharge-side current / voltage detector 76 is provided on the load-side breaker 26 side of the discharge switch 74.
- the charge switch 70 and the discharge switch 74 are semiconductor switch elements that are turned on / off by an electrical signal, and specifically, FETs can be used.
- the current / voltage detectors 62, 64, 66 on the power storage device side, the current / voltage detector 72 on the charge side, and the current / voltage detector 76 on the discharge side can be configured by a voltage detection sensor and a current detection sensor.
- the storage device 30 has two storage battery packs (32 and 32-2, 34 and 34-2, 36 and 36-2) connected in series, and these are connected in parallel in three rows. Therefore, the current / voltage detectors 62, 64, and 66 on the power storage device side are provided corresponding to each of the three columns.
- the number of storage battery packs constituting the power storage device 30 is not limited to six, and may be increased or decreased based on the required power, but the charge / discharge switch device 60 has one charge / discharge path. Therefore, it is important that the power storage system 10 behaves as a single battery.
- the charge switch 70 and the discharge switch 74 are connected to the control block 80 through a communication line through which a charge / discharge command is transmitted.
- the charge / discharge command from the control block 80 is performed by a LOW (0) / HIGH (1) signal indicating ON / OFF of the switch.
- the current / voltage detectors 62, 64, 66 on the power storage device side, the current / voltage detector 72 on the charge side, and the current / voltage detector 76 on the discharge side are respectively connected to the control block 80 and analog data (for example, the detection amount is 1). Connected to a communication line capable of transmitting (converted to a voltage value of -5V).
- the power storage device breaker 50 can cut off the flow of electric power when a current exceeding a predetermined cut-off threshold flows.
- the power storage device breaker 50 is provided between the power storage device 30 and the charge / discharge switch device 60.
- the power storage device 30 includes three breakers 52, 54, and 56 corresponding to the configuration of the power storage device 30 having three rows.
- the breaker 52 is in a row in which the storage battery pack 32 and the storage battery pack 32-2 are connected in series
- the breaker 54 is in a row in which the storage battery pack 34 and the storage battery pack 34-2 are connected in series
- the breaker 56 is in the storage battery.
- the pack 36 and the storage battery pack 36-2 are arranged corresponding to the columns connected in series.
- the power storage device breaker 50 has a function of performing transmission / reception with the control block 80.
- the power storage device breaker 50 can switch from the connected state to the cut-off state according to a command from the control block 80.
- the power storage device breaker 50 transmits to the control block 80 as a status signal whether the current state is a connected state or a disconnected state. Both the command signal and the status signal are transmitted as a LOW (0) / HIGH (1) signal. Transmission of these signals is performed for each of the breakers 52, 54, and 56.
- the power storage device breaker 50 can be switched from a shut-off state to a connected state in which power is supplied by a user's manual switch operation.
- a plurality of secondary batteries are combined in series and in parallel to form an assembled battery, which is accommodated in one assembled battery case.
- the unit of this assembled battery case is called a storage battery pack.
- a storage battery pack 32 and a storage battery pack 32-2 are connected in series
- a storage battery pack 34 and a storage battery pack 34-2 are connected in series
- a storage battery pack 36 and a storage battery pack 36-2 are connected in series. What is connected in series is connected in parallel in three rows.
- the storage battery state detection units 38, 38-2, 40, 40-2, 42, 42-2 are provided for each storage battery pack 32, 32-2, 34, 34-2, 36, 36-2. Arranged inside.
- Each storage battery state detection unit has a function of detecting and transmitting to the control block 80 the voltage between + and-of the storage battery pack, the current flowing through the storage battery pack, the temperature inside the storage battery pack, and the like as the internal state of each storage battery pack.
- the internal state of each storage battery pack has a function of detecting an abnormal state such as sensor abnormality, overcurrent, overdischarge, overcharge, and the like and transmitting it to the control block 80.
- the storage battery state detectors 38, 38-2, 40, 40-2, 42, 42-2 and the control block 80 are connected by a signal line capable of transmitting the internal state of the storage battery pack as a digital signal.
- Each storage battery pack 32, 32-2, 34, 34-2, 36, 36-2 includes various sensors such as a storage battery state detection unit in the assembled battery case and transmission / reception of detection signals to / from the outside.
- the control block 80 is a control device having a function of controlling each component as a whole with respect to charging and discharging of the power storage system 10.
- the display unit 82 connected to the control block 80 is a small display capable of displaying error contents and the like when executing a self-diagnosis function described later.
- the operation lamp 84 is an indicator lamp that lights up when the power storage system 10 is in an operating state.
- the error lamp 86 is a warning indicator lamp that is turned on when an abnormality occurs in the power storage system 10. Therefore, when the power storage system 10 is operating normally, the operation lamp 84 is turned on and the error lamp 86 is turned off.
- the control block 80 has a function of controlling the operation of the power storage system 10 as a whole as described above.
- the control block 80 diagnoses whether or not the state of each component is normal at the start-up self-diagnosis device 90 for diagnosing whether or not the state of each component is normal at the time of startup.
- the operation control device 120 that has a normal operation mode and a standby mode as operation modes and controls state transition between them.
- the self-diagnosis device 90 at the time of startup is for diagnosing the state of each component.
- the apparatus diagnosis unit 100 and the switch diagnosis unit 102 are included. Details of each will be described later.
- the regular monitoring device 110 includes a detected abnormality classification unit 112, a failure state processing unit 114, and an abnormal state processing unit 116.
- the detected abnormality classification unit 112 is based on a predetermined classification criterion, and the detected abnormal state is a failure state in which early recovery cannot be expected or a recoverable abnormality Classify into states.
- the failure state processing unit 114 shuts off the power storage device breaker 50 and outputs an alarm when the detected abnormal state is classified as a failure state in which early recovery cannot be expected.
- the abnormal state processing unit 116 outputs an alarm when the detected abnormal state is classified as a recoverable abnormal state. Details of each will be described later.
- the operation control device 120 includes a normal operation mode setting unit 122, a standby mode setting unit 124, and a state transition unit 126.
- the normal operation mode setting unit 122 sets the power storage device breaker 50 and the load-side breaker 26 in a connected state, and monitors the charge state and the internal state of the power storage device 30 and operates the charge / discharge switch device 60 according to the charge state. Sets the normal operation mode to be controlled.
- the standby mode setting unit 124 sets both the power storage device breaker 50 and the load-side breaker 26 in a connected state, and prohibits the operation of the charge / discharge switch device 60 while interrupting the monitoring of the charge state and the internal state of the power storage device 30. Set the standby mode to be in the state.
- the state transition unit 126 performs state transition between the normal operation mode and the standby mode. Details of each will be described later.
- the self-diagnosis at start-up by the self-diagnosis device 90 at start-up, the regular monitoring by the periodic monitoring device 110, and the operation control by the operation control device 120 can also be realized by executing software. For example, it can be realized by assembling a program to include a self-diagnosis program at startup, a periodic monitoring program, and an operation control program in the overall operation program of the power storage system, and executing these programs.
- the self-diagnosis at startup by the self-diagnosis device 90 at startup, the periodic monitoring by the periodic monitoring device 110, and the operation control by the operation control device 120 may be partially realized by hardware.
- FIGS. 2 to 12 relate to the self-diagnosis device 90 at the time of startup
- FIGS. 13 and 14 relate to the periodic monitoring device 110
- FIGS. 18 to 22 relate to the operation control device 120.
- FIG. 2 and 3 are flowcharts showing the self-diagnosis procedure at the time of startup.
- peripheral diagnostic items what can be diagnosed without using the power storage device 30 and what can be diagnosed with respect to the power storage device while the power storage device breaker 50 is shut off are referred to as peripheral diagnostic items.
- the self-diagnosis procedure at startup shown in FIG. 2 is a diagnostic procedure for peripheral diagnostic items.
- the self-diagnosis procedure at the time of startup shown in FIG. 3 is to diagnose the charge / discharge switch device 60 with the power storage device breaker 50 connected when the diagnosis result of the peripheral diagnosis item is normal. It is the diagnostic procedure of the electrical storage apparatus in FIG.
- Diagnosing peripheral diagnostic items prior to other items is based on the assumption that there is an abnormality in the components that can be diagnosed without using the power storage device and the power storage device breaker 50 and that the power storage device 30 is used. This is because if the power storage device 30 is unexpectedly overcharged, overdischarged or overcurrent, the power storage device 30 may be damaged.
- an overall operation program for the power storage system is started.
- the first to start is a self-diagnosis program at the time of startup.
- initialization is performed (S10).
- each component of the power storage system 10 is set to an initial state.
- switching device 20 is set in a serial connection state
- power storage device breaker 50 is set in a cutoff state.
- the initialization processing procedure is executed by the initialization setting unit of the self-diagnosis device 90 at the time of startup.
- the power storage device breaker 50 activates a subroutine for monitoring that it is in the initial shut-off state (S12). After S12, during the self-diagnosis procedure at the time of activation, a subroutine for monitoring that the load-side breaker 26 is in the cutoff state is activated (S14). After S14, converter diagnosis is performed to diagnose whether the AC / DC converter 24 can normally communicate with the self-diagnosis device 90 at the time of start-up and operates as instructed (S16). After S16, the switching device for diagnosing whether the switching device 20 is set to the initial state and whether the switching device 20 can normally communicate with the self-diagnosis device 90 at the time of activation and operates as instructed. Is diagnosed (S18).
- the power storage device 30 can normally communicate with the startup self-diagnosis device 90, and each storage battery pack 32, 32-2, 34, 34-2, 36, 36-2 constituting the power storage device 30 is provided.
- the power storage device for diagnosing whether or not the internal state of the battery can be acquired is diagnosed (S20).
- the steps up to here are the diagnostic processing procedures for the peripheral diagnostic items, and these processing procedures are executed by the peripheral item diagnostic unit of the self-diagnosis device 90 at the time of startup.
- S12 and S14 may be reversed in order
- S16 and S18 may be reversed in order.
- Each diagnosis is executed in more detail by the subroutine, and the contents thereof will be described later with reference to FIGS.
- the subroutine activated in S12 is stopped (S21), and the display unit 82 displays that the power storage device breaker 50 is in a connected state (S22). This display prompts the user to connect the power storage device breaker 50.
- the subroutine activated in S14 is stopped (S27), and the load-side breaker 26 may be connected to the display unit 82. Is displayed (S28). This display prompts the user to connect the load-side breaker 26.
- S21 to S29 are diagnostic processing procedures in the usage state of the power storage device 30, and these processing procedures are executed by the usage state diagnostic unit of the self-diagnosis device 90 at the time of activation.
- the periodic monitoring device 110 executes periodic monitoring in the operation state, which will be described later.
- FIG. 4 is a diagram showing the detailed procedure of the subroutine activated in S12.
- the monitoring of whether or not the power storage device breaker 50 executed in the subroutine activated in S12 is in the cut-off state is performed by checking whether or not the power storage device breaker 50 is in the cut-off state during the diagnostic procedure of the peripheral diagnostic items. It is determined whether there is an instruction to stop monitoring (S29). In other words, the shutoff monitoring of the power storage device breaker 50 is continuously performed while the peripheral diagnosis items are being diagnosed. Whether or not the power storage device breaker 50 is in the cut-off state is monitored by monitoring that each of the breakers 52, 54, and 56 constituting the power storage device breaker 50 is in the cut-off state (S30). The monitoring in S30 is performed by checking whether or not the status signal transmitted from each of the breakers 52, 54, and 56 to the self-diagnosis device 90 at the time of activation is in a cut-off state.
- the initial state of the power storage device breaker 50 is the cut-off state as described above. For this reason, if a connection state is detected, a cutoff command is transmitted from the self-diagnosis device 90 at the start to the corresponding breaker (S32). Thereby, power storage device breaker 50 is cut off. Monitoring is continued if a blocking state is detected. By immediately shutting off the connected power storage device breaker, damage to the power storage device 30 due to unexpected overcharge, overdischarge, or overcurrent can be suppressed, and the peripheral item diagnosis procedure can be continued.
- the processing procedure of the subroutine activated in S12 is executed by the state monitoring unit 92 of the power storage device breaker of the self-diagnosis device 90 at the time of activation.
- FIG. 5 is a diagram showing a detailed procedure of the subroutine activated in S14.
- the subroutine activated in S14 has almost the same procedure as the subroutine in S12.
- the load-side breaker 26 is composed of one breaker, and the load-side breaker 26 is manually operated. There is a difference due to the fact that the state of the load-side breaker 26 cannot be changed from the self-diagnosis device 90 side.
- Whether or not the load-side breaker 26 is in the cut-off state is determined by whether or not there is an instruction to stop monitoring whether or not the load-side breaker 26 is in the cut-off state during the self-diagnosis at the time of activation. (S33). That is, monitoring whether or not the load-side breaker 26 is in the cut-off state is continuously performed while the self-diagnosis at the time of startup is being performed. Whether or not the load-side breaker 26 is in the cut-off state (S34) is determined by whether or not the status signal transmitted from the load-side breaker 26 to the self-diagnosis device 90 via the signal line indicates the cut-off state. It is done by watching.
- the load-side breaker 26 Since the load-side breaker 26 is a manual type, it does not have a function of receiving a command from the self-diagnosis device 90 at startup. For this reason, if a user's manual switch operation is performed and a connection state is detected, the error lamp 86 is turned on, an error is displayed on the display unit 82 (S36), and the load-side breaker diagnosis is terminated. become.
- the processing procedure of the subroutine activated in S14 is executed by the state monitoring unit 94 of the load-side breaker of the self-diagnosis device 90 at the time of activation.
- FIG. 6 is a diagram showing a detailed procedure of converter diagnosis in S16.
- S16 it is first diagnosed whether or not the communication between the AC / DC converter 24 and the self-diagnosis device 90 at startup is normally performed (S38). Specifically, when a command is transmitted from the self-diagnosis device 90 at startup to the AC / DC converter 24, a diagnosis is made based on whether or not there is a response. When the communication is normal, it is next diagnosed whether the AC / DC converter 24 operates according to the command.
- the operation command is an off command and an on command, and it is diagnosed whether the output for each is normal.
- the discharge-side current / voltage detector 76 confirms that no output voltage is output from the AC / DC converter 24 when a command to turn off the AC / DC converter 24 is given (S40). Further, the discharge-side current / voltage detection unit 76 confirms that the output voltage is output from the AC / DC converter 24 when an instruction to turn on the AC / DC converter 24 is given (S42).
- FIG. 7 is a diagram showing a detailed procedure for the diagnosis of the switching device in S18 executed when the result of the converter diagnosis in S16 is normal.
- S18 first, it is diagnosed whether or not the communication between the switching device 20 and the self-diagnosis device 90 at startup is normally performed (S46). Specifically, when a command for inquiring about the connection form is transmitted from the self-diagnosis device 90 at startup to the switching device 20, a diagnosis is made based on whether or not there is a response. When the communication is normal, it is next diagnosed whether or not the switching device 20 operates as instructed.
- the operation command is issued as a series connection command or a parallel connection command, and it is diagnosed whether the output of each is normal. Since the initial state of the switching device 20 is a serial connection state, a parallel connection command is given to the switching device 20 to diagnose whether the serial connection state has been changed to the parallel connection state. Specifically, it is confirmed whether or not the output is normal based on the voltage value in the current / voltage detector 72 on the charging side (S48). For example, in the daytime in fine weather, changing from the serial connection state to the parallel connection state results in a state in which the photoelectric conversion module 14 and the charge / discharge switch device 60 are electrically connected, so the output voltage of the photoelectric conversion module 14 is It is detected by the current / voltage detector 72 on the charging side. That is, the output voltage of the photoelectric conversion module 14 changes from 0 V to, for example, about 120 V. Thus, whether or not the operation for the parallel connection command is normal is diagnosed by detecting the voltage value in the current / voltage detection unit 72 on the charging side.
- FIG. 8 is a diagram showing a detailed procedure of the diagnosis of the power storage device in S20 that is performed next when the result of the diagnosis of the switching device is normal.
- operating power is supplied to the sensor of the power storage device 30 (S54). That is, for example, 12 V of power is supplied to the power storage device 30 from the self-diagnosis device 90 side at the time of startup. This operating power supply is performed for each of the storage battery state detection units 38, 38-2, 40, 40-2, 42, 42-2 of each storage battery pack.
- the power storage device 30 is diagnosed whether or not the communication between the power storage device 30 and the self-diagnosis device 90 at startup is normally performed (S56). Specifically, there is a response when a command is transmitted from the self-diagnosis device 90 at startup to the storage battery state detection units 38, 38-2, 40, 40-2, 42, 42-2 of each storage battery pack. Diagnosed by whether or not.
- the power storage device 30 is configured by connecting the communication lines of the storage battery packs connected in series in series and providing the communication lines with the self-diagnosis device 90 at the time of startup in parallel.
- the self-diagnosis device 90 at startup can know not only the number of storage battery packs to be performed but also the number of parallel connections and the number of serial connections for each parallel by executing communication. In this way, the configuration of the power storage device 30 can be grasped by communication, and the possibility of occurrence of overcurrent can be suppressed.
- the output voltage of each storage battery pack, the internal temperature of the storage battery pack is within a predetermined normal range, it is diagnosed as normal, and when it exceeds the normal range, it is diagnosed as abnormal. Further, when an abnormal state such as sensor abnormality, overcurrent, overdischarge, or overcharge is not detected as the internal state of the storage battery pack, it is diagnosed as normal, and when detected, it is diagnosed as abnormal.
- the periodic monitoring of the power storage device can prevent damage to the power storage device 30 even if an unexpected overcharge, overdischarge, or overcurrent occurs in the power storage device 30 even during diagnosis using the power storage device 30 described later. .
- FIG. 9 is a diagram showing a detailed procedure of the diagnosis (S26) of the charge / discharge switch device performed when the power storage device breaker 50 is connected (S24) by the user. Here, it is diagnosed whether the on / off operation of the charge switch 70 and the discharge switch 74 is normal.
- the charging switch 70 is diagnosed whether or not the ON operation of the charging switch 70 is normal (S62).
- an on command is given to the charging switch 70, and the charging switch 70 is turned on.
- the voltage value of the current / voltage detection unit 72 on the charging side is compared with the voltage value of the current / voltage detection units 62, 64, 66 on the power storage device side, and if the voltage difference therebetween is within a predetermined range.
- the on-operation is determined to be normal. If there is a voltage difference exceeding a predetermined range in spite of the ON state, it is abnormal (open).
- the off operation of the charging switch 70 is normal (S64).
- an off command is given to the charge switch 70, and the charge switch 70 is turned off. If the current value of the current / voltage detection unit 72 on the charging side or the current value of the current / voltage detection units 62, 64, 66 on the power storage device side is within the measurement error range of 0 A, it is determined that the off operation is normal. The If the current flowing from the photoelectric conversion module 14 is detected in spite of the off state, it is abnormal (short).
- S66 it is diagnosed whether or not the ON operation of the discharge switch 74 is normal (S66).
- an ON command is given to the discharge switch 74, and the discharge switch 74 is turned on.
- the voltage value of the current / voltage detector 76 on the discharge side is compared with the voltage value of the current / voltage detectors 62, 64, 66 on the power storage device side, and if the voltage difference therebetween is within a predetermined range.
- the on-operation is determined to be normal. If there is a voltage difference exceeding a predetermined range in spite of the ON state, it is abnormal (open).
- S68 it is diagnosed whether or not the off operation of the discharge switch 74 is normal (S68).
- an off command is given to the discharge switch 74, and the discharge switch 74 is turned off. If the voltage value of the current / voltage detector 76 on the discharge side is within the 0 V measurement error range, it is determined that the off operation is normal. If the voltage of the power storage device 30 is detected in spite of the off state, it is abnormal (short). The reason why the determination is based not on the current value but on the voltage value is that no current flows because the load-side breaker 26 side is cut off.
- FIG. 10 is a diagram showing a display screen of the display unit 82 in S22 of FIG. In this way, a message is displayed on the display informing that the power storage device breaker 50 is in the connected state and prompting the user to put the power storage device breaker 50 in the connected state.
- FIG. 11 is a diagram showing a display screen of the display unit 82 in S28 of FIG. In this way, a message is displayed on the display to inform the user that the load-side breaker 26 may be in the connected state and to prompt the user to place the load-side breaker 26 in the connected state.
- FIG. 12 is a diagram showing a display screen of the display unit 82 when performing error display.
- a message that the power is first turned off is carefully displayed.
- the two lines below the text are error display fields, but the display unit 82 is a small display. For example, when the left key is pressed with the left and right keys not shown, the next error is displayed. A display appears, and when one right key is pressed, the previous error display appears, so that a plurality of error displays can be sequentially displayed on the display screen.
- the error display can represent multiple contents with a combination of alphanumeric characters.
- a and B distinguish the sequence that is the stage in which an abnormality has occurred.
- A indicates that it is a cause of abnormal termination in the self-diagnosis procedure at the time of startup
- B indicates Indicates that this is a cause of further abnormalities when the abnormal termination sequence is executed.
- B there is an abnormality that occurs when the system cannot be returned to the initial state, such as the on / off state of the charge switch 70 and the discharge switch 74 cannot be confirmed.
- a and B can be selected with the cursor at the left end of the screen.
- a plurality of error displays can be displayed sequentially with the left and right keys.
- displays such as A and B can be used.
- A01 / 03 indicates that three errors are detected in the self-diagnosis at the time of startup and are the contents of the first error.
- the next combination of 2 digits, 2 digits, and 3 digits, a total of 7 digits, indicates the content of the error.
- the first two digits indicate the type of device to be diagnosed
- the next two digits indicate the identification number when there are more diagnostic targets in the device to be diagnosed
- the last three digits indicate an error Code.
- 01 can be a converter
- 02 can be a switching device
- 03 can be a power storage device, and the like.
- 03-11-003 represents the first 03 as the power storage device
- the next 11 represents the 1 (parallel number) -1 (serial number) th in the power storage device.
- the last 003 is indicated by an error code 003, for example, indicating a communication abnormality.
- the above is the description of the self-diagnosis device 90 at the time of startup.
- the periodic monitoring device 110 determines whether each component of the power storage system 10 is in a normal state after entering the operating state when the power storage system 10 is normal in the self-diagnosis at startup. It has a function to periodically monitor whether or not.
- the timing for executing the regular monitoring can be determined in advance. For example, it can be set by time, such as at intervals of 1 second, or can be set for each predetermined charging state of the power storage device 30.
- FIG. 13 is a flowchart for explaining the processing procedure during normal operation following the self-diagnosis procedure at startup.
- an abnormality is detected as a result of periodic monitoring (S88)
- whether the detected abnormal state is a failure state in which early recovery cannot be expected or a recoverable abnormal state based on a predetermined classification criterion Classification is performed. This process is executed by the detected abnormality classification unit 112 of the periodic monitoring device 110.
- the power storage device The breaker 50 is shut off (S92), an abnormal termination sequence for returning the system to the initial state is executed (S96), an alarm is output (S98), and the normal operation is terminated.
- This process is executed by the failure state processing unit 114 of the periodic monitoring device 110.
- appropriate abnormality handling processing such as charging / discharging, discharging, or temporarily stopping charging is performed according to the detected abnormal state (S100).
- An alarm is output (S94).
- the error lamp 86 is turned on, and an error message is displayed on the display unit 82.
- This process is executed by the abnormal state processing unit 116 of the periodic monitoring device 110.
- abnormal states that can be recovered may be classified into a plurality of stages, such as abnormal state 1, abnormal state 2, and abnormal state 3, depending on the recoverable time, etc. You can make it.
- FIG. 14 is a diagram illustrating an example of a classification standard regarding detection abnormality.
- an abnormality determination condition is shown for each monitoring target, and for each of them, it is shown whether the detected abnormality is a failure state in which early recovery cannot be expected or a recoverable abnormal state.
- the classification criteria regarding the detection abnormality is stored in advance in the storage unit of the periodic monitoring device 110.
- the classification criteria regarding the detection abnormality is stored in a hierarchical look-up table format as shown in FIG. 14, or a failure state that cannot be recovered early by entering a search key using the hierarchical structure or an recoverable abnormal state Can be stored in a format for outputting or a simplified map format.
- the overcharge and overdischarge are abnormal states in the power storage device 30 and are not only likely to damage the power storage device 30 but also require immediate response from the viewpoint of system safety. Since the power storage device breaker 50 is shut off, the power storage device breaker 50 is shut off, and a failure state in which the early recovery of shutting off the power storage device 30 from the system cannot be expected.
- the abnormality of the charging current value and the abnormality of the discharging current value are considered to be recoverable abnormal states, but when the abnormal state continues for a predetermined time or more. It is considered as a failure state where early recovery cannot be expected. This is because the charging current value and the discharging current value may instantaneously become large values, and it is considered that they can be recovered. However, if this continues for a long time, the power storage device 30 may be damaged. .
- a state in which the charge switch 70 or the discharge switch 74 constituting the charge / discharge switch device 60 does not normally operate in response to a predetermined operation instruction is a failure state in which early recovery cannot be expected. This is because there is a high possibility of causing damage to the power storage device 30 as it is because the power storage device 30 is not charged or discharged.
- the state of detection abnormality is not uniformly set as a failure state, but is classified in detail according to the content of the abnormality, and those that can be recovered are not set as failure states, thereby improving the operating rate of the power storage system 10. Can be achieved.
- the power storage device breaker 50 is shut off as a failure state in which there is a possibility that the power storage device 30 may be damaged and an early recovery is not expected, the power storage device 30 can be protected.
- the charge / discharge switch device of S26 is diagnosed with the power storage device breaker 50 in the connected state and the load side breaker 26 in the disconnected state.
- the load-side breaker 26 is provided between the discharge switch 74 and the load.
- the discharge switch 74 is turned off, if the primary side capacitor which is the input side capacity of the inverter and the DC / DC converter is charged, a voltage is applied to the load side of the discharge switch 74. Therefore, at first glance, it seems that the discharge switch 74 is on. Below, the discharge switch diagnosis which does not make a misjudgment even when there is no load side breaker 26 is demonstrated.
- FIG. 15 is a diagram in which the periphery of the discharge switch 74 is extracted from the overall configuration diagram of FIG.
- the discharge side of the current-voltage detection unit 76 is constituted with a current detector for detecting a current I 74 flowing through the discharge switch 74, by the voltage detector for detecting a voltage V 74 of the load terminal of the discharge switch 74
- the current / voltage detectors 62, 64, 66 on the power storage device side are each composed of a current detector and a voltage detector, but here they are collectively moved from the power storage device 30 toward the discharge switch 74.
- a current detector for detecting the flowing current I 30 and a voltage detector for detecting the voltage V 30 of the storage device side terminal of the discharge switch 74 are shown.
- An on command and an off command to the discharge switch 74 are transmitted from the switch diagnosis unit 102.
- FIG. 16 is a diagram illustrating the case where the operation of the discharge switch 74 is determined to be normal or abnormal in three parts.
- it is divided into two types: self-diagnosis at the time of starting up the power storage system and periodic monitoring during operation of the power storage system. This is divided into cases where the DC / DC converter is always connected to the discharge switch 74 without providing a side breaker.
- FIG. 15 is used to show a configuration diagram around the discharge switch 74 in each case. In each case, an operation determination when an on command is given to the discharge switch 74 and an operation when an off command is given. Regarding judgment, how the detection results of I 74 by the current detector and the detection results of V 30 and V 74 by the voltage detector are used is summarized.
- the discharge switch 74 is turned off normally, an OFF command is given to the discharge switch 74, and the discharge switch 74 is turned off. If the voltage value of the current / voltage detector 76 on the discharge side is within the 0 V measurement error range, it is determined that the off operation is normal. If the voltage of the power storage device 30 is detected in spite of the off state, it is abnormal (short). The reason why the determination is based not on the current value but on the voltage value is that no current flows because the load-side breaker 26 side is cut off.
- the determination of the ON operation of the discharge switch 74 is the same as when the load-side breaker 26 is provided. However, the determination as to whether the discharge switch 74 is operating normally is different from the case where the load-side breaker 26 is provided. It when the load-side circuit breaker 26 is not provided, the discharge switch 74 is connected directly to the DC / DC converter 28, the voltage state of the input side capacitor voltage detector since detection as V 74. That is, when an ON command is given to the discharge switch 74, a current is supplied to the DC load 18 via the DC / DC converter 28. Thus, the input-side capacitance of the DC / DC converter 28 is charged, it will have a voltage of V 30.
- FIG. 17 is a flowchart showing a procedure for determining whether the OFF operation of the discharge switch 74 in the self-diagnosis at the time of startup is normal or abnormal.
- a current detector that detects I 74 is used in combination. That is, when the load-side breaker 26 is provided, it can be determined whether the discharge switch 74 is operating normally or abnormally by using only a voltage detector that detects V 74 and V 30. When it is not provided, it is necessary to use the detection result of the current detector in combination.
- the procedure shown in FIG. 17 can be used even when the load-side breaker 26 is provided. Although there are steps due to S112, there is no misjudgment. Therefore, regardless of the presence or absence of the load-side breaker 26, it is preferable to use the procedure of FIG.
- the power storage system is operational, the case of periodic monitoring, by monitoring the I 74 is a load current, OFF operation is normal or abnormal discharge switch 74 can be determined.
- the discharge switch 74 by comparing the V 74, V 30 detected by the voltage detector, when the range in which the voltage difference between V 74 and V 30 are determined in advance as normal Judgment can be made and an abnormality can be determined when a predetermined range is exceeded.
- the startup self-diagnosis needs to take a different procedure from the periodic monitoring during operation. I know that there is. That is, in the case of periodic monitoring during operation, it is possible to diagnose the operation of the discharge switch 74 using only the detection result of the current detector, but in the self-diagnosis at the start-up, the detection result of the voltage detector and the current Combining the detection result of the detector can prevent erroneous determination regardless of the configuration of the power storage system.
- the operation control device 120 has a function of setting a standby state without stopping the load-side breaker 26 and the power storage device breaker 50 when the operation of the power storage system 10 is stopped. That is, the operation control device 120 prohibits the normal operation mode for performing actual charge / discharge control for the power storage system 10 and the actual charge / discharge control for the power storage system 10 as the operation mode, but otherwise the same as the normal operation mode. And a standby mode for making a state.
- FIG. 18 is a diagram for explaining the state of the normal operation mode 130, the state of the standby mode 140, and the state transition 150 between them.
- FIG. 19 shows the setting conditions for the normal operation mode
- FIG. 20 shows the setting conditions for the standby mode.
- a basic state 132 There are three states of the normal operation mode 130: a basic state 132, a failure state 134, and a recoverable abnormal state 136.
- the state transition from the basic state 132 to the failure state 134 or the recoverable abnormal state 136 occurs when an abnormality is detected by periodic monitoring by the periodic monitoring device 110.
- the failure state 134 or the recoverable abnormality state 136 is classified according to the classification standard related to the detection abnormality as shown in FIG. If the failure state 134 is entered, the state does not return to the basic state 132 as it is, but the recoverable abnormal state 136 returns to the basic state 132 when the abnormal state is resolved and becomes a normal state.
- state transition in charge / discharge control is shown.
- a charge / discharge state in which both charging and discharging are performed
- a discharge only state in which only discharging is performed and charging is not performed
- a charging only state in which only charging is performed and there is no discharging It is shown that a state transition occurs in the state.
- SOC can be used. For example, when the SOC is 90% or more in the charge / discharge state, the state transitions to the discharge only state, and when the SOC is less than 40%, the state transitions to the charge only state.
- the power storage device 30 can be charged up to SOC 100%, but a charged state close to 100% may shorten the life of the storage battery pack constituting the power storage device 30. Therefore, in the present embodiment, charging is stopped at SOC up to 90%, and only discharging is performed. Similarly, since the discharge until the SOC becomes close to 0% may shorten the life of the battery pack, when the SOC becomes less than 40%, no further discharge is performed and only the charging is performed. Since the battery pack operates most efficiently in the vicinity of SOC 60%, the transition threshold value to the charge / discharge state is set. The above is an example for explanation, and the state transition condition can be set with other SOC values.
- the state of the standby mode 140 in FIG. 18 is almost the same as that in the normal operation mode 130, and the basic state 132 of the normal operation mode 130 is changed to the standby state 142.
- the state transition in the standby state 142 is the same as the state transition in the basic state 132 of the normal operation mode 130. That is, when the SOC is 90% or more in the charge / discharge state, the state transitions to the discharge only state, and when the SOC is less than 40%, the state transitions to the charge only state. When the SOC is less than 60% in the discharge only state, the state transitions to the charge / discharge state, and when the SOC is 60% or more in the charge only state, the state transitions to the charge / discharge state.
- the basic state 132 in the normal operation mode 130 and the standby state 142 in the standby mode 140 are controlled on the assumption that the state transition occurs based on the same SOC standard.
- the charge control and the discharge control are actually performed in the charge / discharge state
- the discharge control is actually performed in the discharge only state
- the charge control is actually performed in the charge only state.
- the standby state 142 of the standby mode 140 charging / discharging is prohibited in any state.
- the state is fixed by the SOC when the operation mode is switched from the normal operation mode 130 to the standby mode 140, but during the period of the standby mode 140, the actual power storage system 10 Since the state of each component does not always maintain a constant state, various state transitions can occur within the period of the standby mode 140. For example, if the SOC at the time of switching to the standby mode 140 is 61%, the standby state 142 is in a discharge only state. Here, when the standby mode 140 continues for several hours and the SOC decreases for less than 60% for some reason, the state transitions to the charge / discharge state. Further, if the SOC decreases to less than 40%, the state transitions to the state of only charging.
- the standby mode 140 the operation of the charge / discharge switch device 60 is prohibited, but the monitoring of the charge state of the power storage device 30 is continued, and the state transition is performed according to the result.
- the state of the standby state 142 is directly taken over to the state of the basic state 132, and charge / discharge control is immediately performed according to the state.
- the standby state 142 is shifted to the charge only state, returning to the normal operation mode 130 does not correspond to the discharge only state when the standby mode 140 is switched, but the current charge.
- control only for charging is performed immediately.
- FIG. 19 shows the setting conditions when the normal operation mode 130 is entered. Under this set condition, the operation mode of the power storage system 10 is set to the normal operation mode 130. The setting is executed by the normal operation mode setting unit 122 of the operation control device 120.
- FIG. 20 shows the setting conditions when the standby mode 140 is entered. Under this setting condition, the operation mode of the power storage system 10 is set to the standby mode 140. The setting is executed by the standby mode setting unit 124 of the operation control device 120.
- both the charge switch 70 and the discharge switch 74 are turned off, and it can be seen that the operation of the charge / discharge switch device 60 is prohibited during the standby mode 140. Therefore, the state transition 150 between the normal operation mode 130 and the standby mode 140 is performed by changing the setting of the charge / discharge switch device 60 between charge / discharge control enabled and charge / discharge control prohibited. This state transition 150 is executed by the state transition unit 126 of the operation control device 120.
- the load side breaker 26 and the power storage device breaker 50 are not shut off, so the charge / discharge control prohibition is simply canceled without performing the power storage device breaker diagnosis and the load side breaker diagnosis in the self-diagnosis at the time of startup.
- the normal operation mode 130 can be easily restored.
- the power storage device breaker 50 and the load-side breaker are operated at night.
- a period distinguishing unit of the operation control device 120 distinguishes between a normal operation period in which normal operation is performed and a charge / discharge stop period in which charge / discharge is stopped.
- the state transition unit 126 performs a state transition from the normal operation mode 130 to the standby mode 140 when acquiring that it is a charge / discharge stop period, and performs normal operation from the standby mode 140 when acquiring that it is a normal operation period.
- the charge / discharge switch device 60 can be controlled so as to make a state transition to the mode 130.
- standby mode 140 when changing the setting of control parameters used for operation control of charge / discharge switch device 60, standby is performed without shutting off power storage device breaker 50 and load-side breaker 26.
- Mode 140 includes changing control parameter settings. When the setting change of the control parameter is completed, it is possible to simply return to the normal operation mode 130 and perform the operation under the new control parameter simply by releasing the prohibition of charge / discharge control.
- the parameter setting unit that sets the control parameter used for operation control of the charge / discharge switch device 60 is allowed to change the setting of the control parameter when in the standby mode 140, and the control parameter is set.
- the state transition from the standby mode 140 to the normal operation mode 130 can be performed.
- the parameter setting unit can be provided in the operation control device 120.
- FIG. 21 and 22 are diagrams for explaining the effect of using the standby mode 140 from the viewpoint of the performance of the power storage device 30.
- FIG. As described above, the standby mode 140 prohibits charge / discharge control of the power storage device 30, so that the temperature increase of the power storage device 30 due to charge / discharge is eliminated. Therefore, the environmental temperature of power storage device 30 is lower than that during operation. This can be expected to extend the life of the power storage device 30.
- FIG. 21 is a diagram showing how the capacity of the power storage device 30 decreases with the passage of the storage time depending on the storage temperature of the power storage device 30.
- the SOC at the initial stage of storage is 75%
- the decrease in capacity is shown as a capacity ratio based on this SOC of 75%.
- FIG. 21 is a diagram comparing the decrease in capacity ratio with the horizontal axis representing the half power of the storage time, the vertical axis representing the capacity ratio, and the storage temperatures of 25 ° C. and 45 ° C. As shown in FIG. 21, it can be seen that the lower the storage temperature, the less the capacity reduction of the power storage device 30 and the longer the service life.
- FIG. 22 is a diagram showing the results of a charge / discharge cycle test.
- the horizontal axis is the power of the number of cycles, and the vertical axis is the capacity ratio. As shown in FIG. 22, it can be seen that the lower the test temperature, the less the capacity reduction of the power storage device 30 and the longer the service life.
- the charge / discharge cycle test was conducted as follows. That is, the implementation temperature was 25 ° C. and 45 ° C. And as charging and discharging conditions, as charging and discharging conditions, as charging conditions for the first cycle, after performing constant current charging at a current of 50 mA for 4 hours, charging at a constant current of 200 mA until the battery voltage reaches 4.20 V, 4. Constant voltage charging was performed until the current value reached 50 mA at a voltage of 4.20 V. Moreover, as discharge conditions of the 1st cycle, constant current discharge was performed until the battery voltage became 2.75V with the electric current of 200mA.
- the charging conditions of the second cycle to the 500th cycle are constant current charging at a current of 1000 mA until the battery voltage reaches 4.20 V, and further constant voltage charging at a voltage of 4.20 V until the current value reaches 50 mA. went.
- constant current discharge was performed at a current of 1000 mA until the battery voltage reached 2.75V. In this way, the relationship between the capacity ratio and the number of cycles was determined.
- the self-diagnosis device for a power storage system can be used for a power storage system including many components in addition to the power storage device.
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Abstract
Description
Claims (14)
- 蓄電装置と、前記蓄電装置に接続されるように配置される充放電スイッチ装置と、前記蓄電装置と前記充放電スイッチ装置との間に設けられる蓄電装置ブレーカとを含む蓄電システム用の自己診断装置であって、
前記蓄電装置ブレーカを遮断状態として、周辺診断項目の診断を行なう周辺項目診断部を備える蓄電システム用の自己診断装置。 - 請求項1に記載の蓄電システム用の自己診断装置において、
前記周辺診断項目の診断結果が正常であるときに、前記蓄電装置ブレーカを接続状態にすることができることを表示する表示部を備える蓄電システム用の自己診断装置。 - 請求項1に記載の蓄電システム用の自己診断装置において、さらに、
前記蓄電装置ブレーカを接続状態にして、使用状態の前記蓄電装置の診断を行なう使用状態診断部を備える蓄電システム用の自己診断装置。 - 請求項3に記載の蓄電システム用の自己診断装置において、
前記蓄電システムは、前記充放電スイッチ装置と前記外部の負荷との間に設けられる負荷側ブレーカを含み、
前記蓄電システムの初期化を行なう初期化設定部と、
前記蓄電装置ブレーカの接続状態を監視する蓄電装置ブレーカの状態監視部と、
前記負荷側ブレーカの接続状態を監視する負荷側ブレーカの状態監視部と、
を含む蓄電システム用の自己診断装置。 - 請求項4に記載の蓄電システム用の自己診断装置において、
前記蓄電装置ブレーカの状態監視部は、前記周辺項目診断部による前記周辺診断項目の診断が実行されている間に、前記蓄電装置ブレーカが導通状態である接続状態にあることを検知すると、前記蓄電装置ブレーカを遮断し、
前記負荷側ブレーカの状態監視部は、前記周辺項目診断部による前記周辺診断項目の診断の間、および前記使用状態診断部による前記蓄電装置ブレーカを接続状態にしての診断の間に、前記負荷側ブレーカが導通状態にある接続状態にあることを検知すると、前記負荷側ブレーカを遮断する蓄電システム用の自己診断装置。 - 請求項4に記載の蓄電システム用の自己診断装置において、
前記蓄電システムは、前記電源として外部商用電源を用い、
前記周辺項目診断部は、
前記外部商用電源の交流電力を充電用直流電力に変換するAC/DCコンバータの動作が正常であるか否かを診断するコンバータ診断部を含む蓄電システム用の自己診断装置。 - 請求項4に記載の蓄電システム用の自己診断装置において、
前記蓄電システムは、光電変換モジュールと接続され、
前記周辺項目診断部は、
前記光電変換モジュールを構成する複数の太陽光発電モジュールの接続状態を変更して出力電圧を切り替えて、前記光電変換モジュールの出力先を変更する切替装置について、その動作が正常であるか否かを診断する切替装置診断部を含む蓄電システム用の自己診断装置。 - 請求項4に記載の蓄電システム用の自己診断装置において、
前記使用状態診断部は、
前記蓄電装置の状態が正常であるか否かを診断する蓄電装置診断部を含む蓄電システム用の自己診断装置。 - 請求項8に記載の蓄電システム用の自己診断装置において、
前記蓄電装置診断部の診断結果が正常であるときに、前記蓄電装置ブレーカが接続状態の下で、前記充放電スイッチ装置の動作が正常であるか否かを診断するスイッチ診断部を含む蓄電システム用の自己診断装置。 - 請求項3に記載の蓄電システム用の自己診断装置において、
前記起動時の自己診断の結果が異常であるときに、前記異常の発生した診断内容を表示する表示部を備える蓄電システム用の自己診断装置。 - 請求項10に記載の蓄電システム用の自己診断装置において、
前記表示部は、
前記蓄電装置診断部の診断結果が正常であるときに、
前記蓄電装置ブレーカが接続可能な状態であることを表示する蓄電システム用の自己診断装置。 - 請求項10に記載の蓄電システム用の自己診断装置において、
前記表示部は、
前記スイッチ診断部の診断結果が正常であるときに、前記負荷側ブレーカが接続可能な状態であることを表示する蓄電システム用の自己診断装置。 - 請求項9に記載の蓄電システム用の自己診断装置において、
前記スイッチ診断部は、前記充放電スイッチ装置の両端子間の電圧に基づいて、前記充放電スイッチ装置の動作が正常であるか否かを診断する蓄電システム用の自己診断装置。 - 請求項13に記載の蓄電システム用の自己診断装置において、
前記充放電スイッチ装置は、
前記蓄電装置から外部の負荷への放電を行なうために前記蓄電装置と前記負荷との間に配置接続される放電スイッチを含み、
前記スイッチ診断部は、
前記放電スイッチにオフ指令を与え、
前記オフ指令の下で、前記放電スイッチの両端子間電圧を検出し、検出された両端子間電圧が予め定めた範囲を超えるときは前記放電スイッチの動作が正常であると判断し、検出された両端子間電圧が予め定めた範囲内のときは、さらに、前記放電スイッチと前記負荷との間に負荷電流が流れるか否かを検出し、前記負荷電流が検出されないときは前記放電スイッチの動作が正常であると判断し、前記負荷電流が検出されるときは前記放電スイッチの動作が異常であると判断する蓄電システム用の自己診断装置。
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EP20110824327 EP2557653A1 (en) | 2010-10-15 | 2011-10-13 | Self-diagnostic device for power storage system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022522753A (ja) * | 2019-11-13 | 2022-04-20 | エルジー エナジー ソリューション リミテッド | マルチバッテリーパックに含まれたスイッチ部の故障診断装置及び方法 |
Families Citing this family (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5596083B2 (ja) * | 2012-06-26 | 2014-09-24 | Imv株式会社 | リチウムイオン二次電池の劣化診断装置 |
CN109085496B (zh) * | 2012-08-10 | 2020-11-03 | 株式会社杰士汤浅国际 | 开关故障诊断装置及蓄电装置 |
JP6202632B2 (ja) * | 2012-09-18 | 2017-09-27 | Necエナジーデバイス株式会社 | 蓄電システムおよび電池保護方法 |
US9494657B2 (en) * | 2012-10-16 | 2016-11-15 | University Of Utah Research Foundation | State of health estimation of power converters |
EP2779250A3 (en) * | 2013-03-15 | 2015-04-29 | Solantro Semiconductor Corp. | Photovoltaic bypass and output switching |
US9524832B2 (en) | 2013-03-15 | 2016-12-20 | Solantro Semiconductor Corp | Intelligent safety disconnect switching |
US9697961B2 (en) | 2013-03-15 | 2017-07-04 | Solantro Semiconductor Corp. | Photovoltaic bypass switching |
US9780234B2 (en) | 2013-06-14 | 2017-10-03 | Solantro Semiconductor Corp. | Photovoltaic bypass and output switching |
US9396061B1 (en) | 2013-12-30 | 2016-07-19 | Emc Corporation | Automated repair of storage system components via data analytics |
US9378082B1 (en) | 2013-12-30 | 2016-06-28 | Emc Corporation | Diagnosis of storage system component issues via data analytics |
US9728074B2 (en) | 2014-09-09 | 2017-08-08 | Tyco Fire & Security Gmbh | Modular wireless mass evacuation notification system |
JP6225977B2 (ja) * | 2015-11-18 | 2017-11-08 | トヨタ自動車株式会社 | バッテリシステム |
CN108248419A (zh) * | 2017-12-18 | 2018-07-06 | 蔚来汽车有限公司 | 储能电池充放电系统与方法以及相关设备 |
KR101918253B1 (ko) * | 2018-01-26 | 2018-11-13 | 최운선 | 플라즈마 전원장치의 자가진단모듈 및 자가진단방법 |
KR20200066115A (ko) * | 2018-05-21 | 2020-06-09 | 주식회사 현태 | 태양전지의 전압측정 시스템 및 이를 이용한 태양전지의 개별 고장진단 방법 |
WO2020021888A1 (ja) * | 2018-07-25 | 2020-01-30 | パナソニックIpマネジメント株式会社 | 管理装置、及び電源システム |
CN116317030B (zh) * | 2023-05-17 | 2023-07-28 | 长通智能(深圳)有限公司 | 集成无线充电和数据传输功能的无线设备 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11136867A (ja) | 1997-10-31 | 1999-05-21 | Hitachi Ltd | 蓄電システム |
JP2001016786A (ja) * | 1999-06-24 | 2001-01-19 | Meiden Engineering Co Ltd | 蓄電池設備の保守点検方式 |
JP2009072053A (ja) | 2007-09-18 | 2009-04-02 | Fdk Corp | 蓄電システム |
JP2010148252A (ja) * | 2008-12-19 | 2010-07-01 | Panasonic Corp | 故障診断回路、及び電池パック |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100219776B1 (ko) * | 1996-04-01 | 1999-09-01 | 정유섭 | 축전지의 충전기 |
JP3043704B2 (ja) * | 1998-03-02 | 2000-05-22 | 米沢日本電気株式会社 | バッテリパックの過充放電防止制御方法および装置 |
WO2000007256A1 (en) * | 1998-07-27 | 2000-02-10 | Gnb Technologies | Apparatus and method for carrying out diagnostic tests on batteries and for rapidly charging batteries |
US8994336B2 (en) * | 2007-02-26 | 2015-03-31 | Black & Decker Inc. | Portable alternating current inverter having reduced impedance losses |
JP2009017651A (ja) * | 2007-07-03 | 2009-01-22 | Lenovo Singapore Pte Ltd | 過電圧保護システム、電池パック、および電子機器 |
EP2184827B1 (en) * | 2007-07-24 | 2015-12-09 | Panasonic Intellectual Property Management Co., Ltd. | Charge monitoring device |
JP5127383B2 (ja) * | 2007-09-28 | 2013-01-23 | 株式会社日立製作所 | 電池用集積回路および該電池用集積回路を使用した車両用電源システム |
JP2010140785A (ja) * | 2008-12-12 | 2010-06-24 | Panasonic Corp | 故障診断回路、及び電池パック |
JP5301657B2 (ja) * | 2009-03-27 | 2013-09-25 | 株式会社日立製作所 | 蓄電装置 |
EP2806482B1 (en) * | 2009-09-28 | 2017-06-28 | Hitachi, Ltd. | Battery system |
-
2011
- 2011-10-13 EP EP20110824327 patent/EP2557653A1/en not_active Withdrawn
- 2011-10-13 KR KR20127007634A patent/KR20120099382A/ko not_active Application Discontinuation
- 2011-10-13 CN CN201180003928XA patent/CN102577015A/zh active Pending
- 2011-10-13 JP JP2012514246A patent/JPWO2012050163A1/ja active Pending
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-
2012
- 2012-03-22 US US13/427,314 patent/US8547107B2/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH11136867A (ja) | 1997-10-31 | 1999-05-21 | Hitachi Ltd | 蓄電システム |
JP2001016786A (ja) * | 1999-06-24 | 2001-01-19 | Meiden Engineering Co Ltd | 蓄電池設備の保守点検方式 |
JP2009072053A (ja) | 2007-09-18 | 2009-04-02 | Fdk Corp | 蓄電システム |
JP2010148252A (ja) * | 2008-12-19 | 2010-07-01 | Panasonic Corp | 故障診断回路、及び電池パック |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2022522753A (ja) * | 2019-11-13 | 2022-04-20 | エルジー エナジー ソリューション リミテッド | マルチバッテリーパックに含まれたスイッチ部の故障診断装置及び方法 |
JP7248220B2 (ja) | 2019-11-13 | 2023-03-29 | エルジー エナジー ソリューション リミテッド | マルチバッテリーパックに含まれたスイッチ部の故障診断装置及び方法 |
US11815556B2 (en) | 2019-11-13 | 2023-11-14 | Lg Energy Solution, Ltd. | Apparatus and method for diagnosing failure of switch unit included in multi battery pack |
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