Abstract: A power storage unit is provided which is able to facilitate recalibration and which is able to supply power even while recalibration is being performed. A method for correcting the capacity values of storage batteries, and a power storage system are also provided. In the power storage unit, a control unit turns ON a portion of the switches to connect a portion of the storage batteries to the charge and discharge path for correction, and corrects the capacity value of the portion of storage batteries by charging and discharging the portion while the other switches are turned OFF to disconnect the other storage batteries from the charge and discharge path.

Abstract: The method of controlling a battery storing electric power generated by a power generator generating electric power using renewable energy comprises detecting an amount of electric power generated by the power generator at a first time and a second time that is prior to the first time; computing a rate of increase or decrease of the amount of electric power between the first time and the second time; computing a target output value for the electric power to be supplied to an electric power transmission system based on the rate, and supplying to the electric power transmission system electric power corresponding to the target output value from at least one of the power generator and the battery.

Abstract: An acquisition unit acquires state of health of a storage battery provided to supply electric power, in which the state of health shows a smaller value as the storage battery deteriorates. A display unit performs notification when state of health acquired by the acquisition unit is smaller than a first threshold value. When the acquisition unit has not acquired state of health for a predetermined period, the display unit performs notification if the elapsed period from the manufacture of the storage battery is longer than a second threshold value.

Abstract: Provided is a power management system capable of controlling charge and discharge of storage batteries according to power requirement of load even when handling electric power of large scale. A system controller receives load-related information data including the power requirement of load and storage battery-related information data including a state of a storage battery assembly including multiple storage batteries and creates an overall charge-discharge control instruction for the entire power management system based on the load-related information data and the storage battery-related information data. A hierarchical charge-discharge control apparatus receives the overall charge-discharge control instruction from the system controller and performs charge-discharge control of the multiple storage batteries, classified into hierarchical levels, on a hierarchical level basis.

Abstract: An electricity storage system has secondary battery housing system racks in which secondary batteries and circuit blocks are respectively housed, and a power converter housing rack in which a power converter is housed, and which is orderly disposed together with the plurality of secondary battery housing system racks. The secondary battery housing system rack having a positive-electrode-side terminal directly connected to a positive-electrode-side terminal of the power converter by a positive-electrode bus and the secondary battery housing system rack having a negative-electrode-side terminal directly connected to a negative-electrode-side terminal of the power converter by a negative-electrode bus, are different from each other.

Abstract: A startup self-diagnostic apparatus for an electrical storage system including an electrical storage device, a charge and discharge switch device disposed to be connected to the electrical storage device, an electrical storage device breaker disposed between the electrical storage device and the charge and discharge switch device, and a load side breaker disposed between the charge and discharge switch device and an external load comprises a state monitoring unit for the electrical storage device breaker, a state monitoring unit for the load side breaker, a converter diagnosing unit, a switching device diagnosing unit, and an electrical storage device monitoring unit, for diagnosing peripheral diagnostic items which may be diagnosed without using the electrical storage device.

Abstract: A power management system is configured to comprise: a plurality of power management units (32, 36, 38, 40, 42) that divide power information about a whole facilities complex into power information about a plurality of management areas, and each of which takes partial charge and manages power information about the area pertaining thereto; and a system controller (30) that is connected to each of the power management units (32, 36, 38, 40, and 42) through a communication element, and that is for conducting power management of the whole facilities complex. When failure information is detected from the power information, an alarm signal is output by the system controller (30), and details about the failure information, which are located at a power management unit (32) for a power apparatus, are transmitted to the other power management units via a server (200).

Abstract: A power management system which carries out charge-discharge control according to lack of storage cell pack characteristic uniformity. A power storage device comprises a power storage unit, a power system switching circuit, and a power management unit. The power management unit: acquires charge information (for example, charge rate SOC) on each of a plurality of storage cell packs contained in the power storage unit; compares the size of said charge information according to the minimum and maximum values thereof respectively with an upper bound and a lower bound, and switches a charge switch and a discharge switch of the power system switching circuit; and transitions the power storage unit between a charge-discharge state, a charge state, and a discharge state.

Abstract: A power storage unit is provided which is able to facilitate recalibration and which is able to supply power even while recalibration is being performed. A method for correcting the capacity values of storage batteries, and a power storage system are also provided. In the power storage unit, a control unit turns ON a portion of the switches to connect a portion of the storage batteries to the charge and discharge path for correction, and corrects the capacity value of the portion of storage batteries by charging and discharging the portion while the other switches are turned OFF to disconnect the other storage batteries from the charge and discharge path.

Abstract: An electricity storage system has secondary battery housing system racks in which secondary batteries and circuit blocks are respectively housed, and a power converter housing rack in which a power converter is housed, and which is orderly disposed together with the plurality of secondary battery housing system racks. The secondary battery housing system rack having a positive-electrode-side terminal directly connected to a positive-electrode-side terminal of the power converter by a positive-electrode bus and the secondary battery housing system rack having a negative-electrode-side terminal directly connected to a negative-electrode-side terminal of the power converter by a negative-electrode bus, are different from each other.

Abstract: The method of controlling a battery storing electric power generated by a power generator generating electric power using renewable energy comprises detecting an amount of electric power generated by the power generator at a first time and a second time that is prior to the first time; computing a rate of increase or decrease of the amount of electric power between the first time and the second time; computing a target output value for the electric power to be supplied to an electric power transmission system based on the rate, and supplying to the electric power transmission system electric power corresponding to the target output value from at least one of the power generator and the battery.

Abstract: A startup self-diagnostic apparatus for an electrical storage system including an electrical storage device, a charge and discharge switch device disposed to be connected to the electrical storage device, an electrical storage device breaker disposed between the electrical storage device and the charge and discharge switch device, and a load side breaker disposed between the charge and discharge switch device and an external load comprises a state monitoring unit for the electrical storage device breaker, a state monitoring unit for the load side breaker, a converter diagnosing unit, a switching device diagnosing unit, and an electrical storage device monitoring unit, for diagnosing peripheral diagnostic items which may be diagnosed without using the electrical storage device.

Abstract: This storage unit includes a storage portion that stores power, a converter that converts power, a first temperature detection portion arranged in the vicinity of the converter, and a housing that houses at least the converter, the first temperature detection portion, and the storage portion.

Abstract: This storage unit includes a power converter that radiates heat by converting power to direct current or alternating current, a storage portion that stores power, a housing that houses at least the storage portion and the power converter, and an air blower provided in the housing, while the air blower is so configured as to send air containing the heat radiated from the power converter into the housing where the storage portion is arranged.

Abstract: A first line includes a switching element and is electrically coupled to a branch point and an external load which is electrically connectable to a battery parallel-operation circuit. A second line includes a resistive element, and is electrically coupled to the external load and the branch point. The first line and the second line are each provided in a plurality. The plural first lines are connected in parallel to one another, and the plural second lines are connected in parallel to one another. The branch points are electrically coupled respectively to plural external, connectable battery units.

Abstract: Provided is a power management system capable of controlling charge and discharge of storage batteries according to power requirement of load even when handling electric power of large scale. A system controller receives load-related information data including the power requirement of load and storage battery-related information data including a state of a storage battery assembly including multiple storage batteries and creates an overall charge-discharge control instruction for the entire power management system based on the load-related information data and the storage battery-related information data. A hierarchical charge-discharge control apparatus receives the overall charge-discharge control instruction from the system controller and performs charge-discharge control of the multiple storage batteries, classified into hierarchical levels, on a hierarchical level basis.

Abstract: A server apparatus is configured to connect client terminal apparatuses through a communication network. The server apparatus receives a signature-attached message having a signature of a different server apparatus connected to the communication network from the different server apparatus, and verifies whether the signature attached to the signature-attached message is valid or invalid. The server apparatus also changes a connection point for the client terminal apparatus to the different server apparatus when the signature verifier verifies that the signature is valid.

Abstract: A server apparatus according to the present invention receives a time-out period information indicating a time-out period used for judging that a connection with a client terminal apparatus is disconnected, and also receives connection-continuation information indicating that the connection is continued. If the server apparatus cannot receive the connection-continuation information within the time-out period indicated by the time-out period information, the server apparatus judges that the connection is disconnected.

Abstract: A home server according to the present invention includes: a storage unit for storing an operation item indicating a type of operation content of the remote operation, and operation data in which each operation item corresponds with necessity of an authentication; a transmission-reception unit for receiving the operation direction from the remote control terminal; an authentication necessity decider for deciding both the operation item and the necessity of the authentication based on the operation direction received and the operation data; and an authorization verifier for authenticating the operation direction as transmitted by the remote control terminal which has been authorized when the authentication necessity decider determines that the authentication is necessary.

Abstract: Provided is a client/server system in which clients (terminal appliances) can uniquely determine to which server they are to be connected irrespective of whether a network has a single or plural servers. When connected to the network, a client obtains function information of each server on the network, and sets the server of the highest function, for example, as the server to which the clients are to be connected. A server compares, when a new server is connected to the network, its own function against the function of the server newly connected to the network to determine to which of the servers the clients are to be connected. The result is notified to the clients. Thus, to which server clients are to be connected is uniquely determined in a multi-server/multi-client network configuration.