Patent application number | Description | Published |
20100006147 | SOLAR CELL MODULE - A solar cell module includes: a photoelectric conversion body | 01-14-2010 |
20120169124 | OUTPUT CIRCUIT FOR POWER SUPPLY SYSTEM - A power supply system is provided with an output terminal unit including a common output terminal, which, when an amount of stored charge in lithium-ion secondary batteries capable of supplying discharge power as a first DC power to a DC load is greater than a predetermined first reference value, supplies to the DC load the first DC power from the lithium-ion secondary batteries and which, when the amount of stored charge is less than the first reference value, supplies to the DC load a second DC power obtained by converting AC power from a system power supply using an AC-DC converter circuit. | 07-05-2012 |
20120169290 | ELECTRICITY STORAGE SYSTEM - There is provided an electricity storage system which comprises an electricity storage device, a charge and discharge switch device placed to be connected to the electricity storage device, a control block which is a charge and discharge control device which controls charging from a power supply and discharging from the electricity storage device to an external load, an electricity storage device breaker provided between the electricity storage device and the charge and discharge switch device, storage battery state detection units which detect the storage battery state information at a connection point between the electricity storage device and the electricity storage device breaker, and the detection units which detect the state information at a connection point between the electricity storage device breaker and the charge and discharge switch device. | 07-05-2012 |
20120175966 | POWER SUPPLY SYSTEM - In a power supply system with a storage battery assembly including storage battery pack groups, when electric power is supplied from at least one of the storage battery pack groups to a load connected to a parallel connection line, the storage battery pack group having the highest output voltage is selected from the storage battery pack groups capable of being commonly connected to the parallel connection line, and is first connected to the parallel connection line, and the highest output voltage of the output voltages of the storage battery pack groups connected to the parallel connection line is set as a reference voltage, and only the storage battery pack groups having an output voltage within a predetermined voltage range during discharging relative to the reference voltage are connected to the parallel connection line. | 07-12-2012 |
20120176079 | Switching Circuit, Control Apparatus, and Power Generation System - A switching circuit capable of efficiently practically using power generated in a plurality of photovoltaic power generation modules is provided. The switching circuit is employed for a power generation system capable of switching a connection state between the plurality of power generation modules, for switching a first connection state where at least a part of the plurality of power generation modules are connected in series with each other, and a second connection state where at least a part of the plurality of power generation modules are connected in parallel with each other, or, the generated power output portion is connected to a storage portion so that generated power is supplied from one of the power generation module to the storage portion. | 07-12-2012 |
20120176080 | SECONDARY BATTERY STORAGE SYSTEM RACK - A secondary battery storage system rack is provided comprising a circuit block which is connected to an electric power line for exchanging electric power with the outside, a secondary battery block which is connected to the circuit block and which has a larger mass than the circuit block, and a storage body unit which stores, in the inside, the circuit block and the secondary battery block, wherein the secondary battery block and the circuit block are placed in one line along a direction of gravitational force, with the secondary battery block placed below the circuit block. | 07-12-2012 |
20120182024 | GROUND FAULT DETECTION CIRCUIT AND GROUND FAULT DETECTION APPARATUS - A ground fault detection circuit includes: a first switch circuit that connects/disconnects a first path between a positive bus bar and a ground potential section, the positive bus bar being connected to positive electrodes of secondary battery units through a field-effect transistor including a parasitic diode; a second switch circuit that connects/disconnects a second path between a negative bus bar and a ground potential section, the negative bus bar being connected to negative electrodes of the secondary battery units; and a ground fault detection unit that detects a ground fault of the positive bus bar or the negative bus bar based on an electric current flowing through the first path or the second path. | 07-19-2012 |
20120228943 | ELECTRIC POWER SUPPLY SYSTEM - There is provided an electric power supply system comprising a secondary battery unit which stores electric power generated by a solar cell module, a charge switch circuit which disconnects and connects a charge path between the solar cell module and the secondary battery unit, and a charge and discharge control unit which controls the disconnection and the connection of the charge path by the charge switch circuit, wherein, in the charge switch circuit, the disconnection and the connection of the charge path is controlled by an output voltage of the solar cell module when the charge switch circuit cannot be controlled by the charge and discharge control unit. | 09-13-2012 |
20120235481 | Storage Unit and Power Generation System - 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. | 09-20-2012 |
20120235491 | PRIORITIZATION CIRCUIT AND ELECTRIC POWER SUPPLY SYSTEM - There is provided a prioritization circuit which selects one of a system power supply and a secondary battery unit as a selected supply source and the other as a non-selected supply source and which causes supply of electric power with a higher priority from the selected supply source to a power supply unit, wherein the non-selected supply source is connected to the power supply unit through a diode element which generates a voltage drop and the selected supply source supplies electric power to the power supply unit without passing through a diode element. | 09-20-2012 |
20120235631 | Storage Unit, Power Generation System, and Charge/Discharge System - 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. | 09-20-2012 |
20120235645 | ELECTRICITY STORAGE SYSTEM - 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. | 09-20-2012 |
20120235687 | SELF-DIAGNOSTIC APPARATUS FOR ELECTRICAL STORAGE SYSTEM - 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. | 09-20-2012 |
20120236451 | ELECTRICITY STORAGE SYSTEM AND CONTROL DEVICE - There is provided an electricity storage system which comprises an electricity storage device, a charge and discharge switch device which is placed connected to the electricity storage device, a control block which is a charge and discharge control device which controls charging from a power supply and discharging from the electricity storage device to an external load, and an electricity storage device breaker with transmission and reception functions which is provided between the electricity storage device and the charge and discharge switch device, disconnects connection with the electricity storage device according to detection of abnormality of the electricity storage device or according to an instruction of the control block, and notifies the execution of the disconnection to the control block. The control block comprises a hardware disconnection instruction unit in addition to a software disconnection instruction unit. | 09-20-2012 |
20120239214 | Charge/Discharge Control Device and Power Generation System - A charge/discharge control device capable of increasing the lifetime of a storage portion while suppressing effects of fluctuation in power generated by a power generator on a power grid is provided. This charge/discharge control device is so formed as to start charge/discharge control of the storage portion if an amount of change in power detected by a power detection portion detecting power passing through a prescribed portion of a line between the power generator and the power grid is at least a prescribed amount of change when the detected power changes from first power to second power while the detected power does not return to power in the vicinity of the first power from the second power within a first period from a time point when the detected power changes from the first power to the second power. | 09-20-2012 |
20120256487 | Charge/Discharge System - This charge/discharge system includes a storage portion storing power generated by a power generation module coupled to a power grid and discharging power to a load and a control portion including a function of stopping discharge of the storage portion on the basis of a result of comparison between a first threshold set in response to the amount of power that can be generated by the power generation module and the amount of power consumption corresponding to power consumed by the load. | 10-11-2012 |
20130293198 | BATTERY ASSEMBLY CONTROL SYSTEM - The battery assembly control system comprises a master controller, a power converter management unit, and power converters. Five battery units are connected in parallel to the charging and discharging main bus of one of the power converters. A switch board, including a plurality of second protection resistors, a plurality of switches, and a first protection resistor, is provided between each of the battery units and the charging and discharging main bus. The second protection resistors have a positive temperature coefficient and have a function of reducing the voltage difference among the four battery pack columns connected in parallel to the sub-bus of each of the battery units. The first protection resistor has a function of preventing excess current. | 11-07-2013 |
20130308239 | SWITCHING DEVICE AND BREAKER CONTROL METHOD - A switching circuit ( | 11-21-2013 |
20130314095 | BATTERY DEGRADATION DETERMINING DEVICE - A battery block | 11-28-2013 |
20130314829 | SWITCHING DEVICE - In the present invention, a main switch circuit ( | 11-28-2013 |
20140062416 | ELECTRICITY STORAGE SYSTEM AND CONTROL DEVICE - There is provided an electricity storage system which comprises an electricity storage device, a charge and discharge switch device which is placed connected to the electricity storage device, a control block which is a charge and discharge control device which controls charging from a power supply and discharging from the electricity storage device to an external load, and an electricity storage device breaker with transmission and reception functions which is provided between the electricity storage device and the charge and discharge switch device, disconnects connection with the electricity storage device according to detection of abnormality of the electricity storage device or according to an instruction of the control block, and notifies the execution of the disconnection to the control block. The control block comprises a hardware disconnection instruction unit in addition to a software disconnection instruction unit. | 03-06-2014 |
20140145727 | GROUND FAULT DETECTION CIRCUIT AND GROUND FAULT DETECTION APPARATUS - A ground fault detection circuit may include a switch circuit that connects or disconnects a path between a bus bar connected to a secondary battery and a ground potential section; an I/V conversion resistance element for detecting a ground fault of the bus bar based on an electric current flowing through the path; and a resistance element connected in series to the I/V conversion resistance element. | 05-29-2014 |
20150054467 | BATTERY CONTROL DEVICE - A battery management portion has communication portions for receiving battery status data from a battery unit and transmitting a signal based on the battery status data (e.g., a signal pertaining to allowing or disallowing charging and discharging) to a power conversion control portion which performs charge/discharge control. Operation is performed in either a normal operation mode, in which communication is continuously performed by the communication portions, or an intermittent operation mode, in which communication by the communication portions is intermittently discontinued, according to the mode request signal from the control portion. If an abnormal state (such as overcharging) is identified during operation in the intermittent operation mode, the operation mode is forcibly shifted to the normal operation mode, irrespective of the state and content of reception of the mode request signal. | 02-26-2015 |