Abstract: A module battery is housed in a module battery housing rack. An electric cell is housed in a container. The container is provided with a high thermal conductive wall and a low thermal conductive wall. A first portion of a plate overlaps the outer surface of the high thermal conductive wall and a second portion of the plate protrudes from the outer surface. The second portion surrounds the first portion. A first main surface of the plate is brought into direct contact with the outer surface at the first portion and it is apart from the container at the second portion. A second main surface of the plate is exposed to a space, to which heat is allowed to radiate. An opening may or may not be formed at the first portion. A thermal conducting medium may be held between the first wall and the first portion.

Abstract: A battery chamber is formed inside a sealed container. A module battery and a charging/discharging path outside a battery are housed in the battery chamber. In the module battery, an electric cell chamber and an air chamber are formed inside a heat-insulating container. The electric cell chamber and the air chamber are divided by a heat transfer wall. An electric cell of a sodium-sulfur battery, and a charging/discharging path inside a battery are housed in the electric cell chamber. An intake path starts from outside of the sealed container and leads to the air chamber. An exhaust path starts from the air chamber and leads to the sealed container. The blower generates an air flow that sequentially flows through the intake path, the air chamber and the exhaust path. In a case where the cooling of the electric cell chamber is required, the air flow is generated.

Abstract: There is provided a secondary battery system which converts direct current power supplied from secondary batteries into alternating current power by power converters, and supplies the converted power to an electric power system on a load side, the secondary battery system including a control apparatus that stops operating the operating the power converter and starts operating the stopped the power converter when a residual stored power level of the secondary battery corresponding to operating the power converter becomes to be not greater than a predetermined rate of a residual stored power level of the secondary battery corresponding to stopped the power converter.

Abstract: A battery chamber is formed inside a sealed container. A module battery and a charging/discharging path outside a battery are housed in the battery chamber. In the module battery, an electric cell chamber and an air chamber are formed inside a heat-insulating container. The electric cell chamber and the air chamber are divided by a heat transfer wall. An electric cell of a sodium-sulfur battery, and a charging/discharging path inside a battery are housed in the electric cell chamber. An intake path starts from outside of the sealed container and leads to the air chamber. An exhaust path starts from the air chamber and leads to the sealed container. The blower generates an air flow that sequentially flows through the intake path, the air chamber and the exhaust path. In a case where the cooling of the electric cell chamber is required, the air flow is generated.

Abstract: A module battery is housed in a module battery housing rack. An electric cell is housed in a container. The container is provided with a high thermal conductive wall and a low thermal conductive wall. A first portion of a plate overlaps the outer surface of the high thermal conductive wall and a second portion of the plate protrudes from the outer surface. The second portion surrounds the first portion. A first main surface of the plate is brought into direct contact with the outer surface at the first portion and it is apart from the container at the second portion. A second main surface of the plate is exposed to a space, to which heat is allowed to radiate. An opening may or may not be formed at the first portion. A thermal conducting medium may be held between the first wall and the first portion.

Abstract: An instantaneous response component representing the actual amount of power generation by a wind-driven electricity generator (1) is detected, and a charge/discharge control section (14) controls charge and discharge of a storage battery (4) according to variation in the instantaneous response component. Further, based on the amount of variation in the instantaneous response component, a pattern information selection section (16) selects, out of patterns, a control region to be allocated for charge/discharge control performed according to variation in the instantaneous response component and applies the selected pattern to charge/discharge control performed by the charge/discharge control section (14). By this, an appropriate control region having less excess or deficiency can be dynamically allocated to the storage battery (4) according to the actual amount, which varies depending on wind conditions, of electric power generation by the wind-driven electricity generator (1).

Abstract: An output-power control apparatus is provided in an electric power system connecting a secondary battery system and a power generator in parallel, and controls output power of the electric power system. The output-power control apparatus detects output power of the power generator, and controls output voltage of the secondary battery system, based on a value obtained by subtracting the detected output power of the power generator from an output power instruction for controlling the output power.

Abstract: An operation guidance program of a sodium-sulphur battery includes a unit that input an operation output and a time zone, a unit that continuously inputs the remaining battery capacity and the battery temperature, a unit that predicts the remaining battery capacity of the sodium-sulphur battery and the battery temperature of the sodium-sulphur battery at the final time, a unit that compares the predicted remaining battery capacity with a standard smallest capacity recorded in advance and outputs guidance when the remaining battery capacity is smaller, and a unit that compares the predicted battery temperature with a standard highest temperature recorded in advance and outputs guidance when the battery temperature is higher than the standard highest temperature.

Abstract: There is provided a secondary battery system which converts direct current power supplied from secondary batteries into alternating current power by power converters, and supplies the converted power to an electric power system on a load side, the secondary battery system including a control apparatus that stops operating the operating the power converter and starts operating the stopped the power converter when a residual stored power level of the secondary battery corresponding to operating the power converter becomes to be not greater than a predetermined rate of a residual stored power level of the secondary battery corresponding to stopped the power converter.

Abstract: An output-power control apparatus is provided in an electric power system connecting a secondary battery system and a power generator in parallel, and controls output power of the electric power system. The output-power control apparatus detects output power of the power generator, and controls output voltage of the secondary battery system, based on a value obtained by subtracting the detected output power of the power generator from an output power instruction for controlling the output power.

Abstract: An instantaneous response component representing the actual amount of power generation by a wind-driven electricity generator (1) is detected, and a charge/discharge control section (14) controls charge and discharge of a storage battery (4) according to variation in the instantaneous response component. Further, based on the amount of variation in the instantaneous response component, a pattern information selection section (16) selects, out of patterns, a control region to be allocated for charge/discharge control performed according to variation in the instantaneous response component and applies the selected pattern to charge/discharge control performed by the charge/discharge control section (14). By this, an appropriate control region having less excess or deficiency can be dynamically allocated to the storage battery (4) according to the actual amount, which varies depending on wind conditions, of electric power generation by the wind-driven electricity generator (1).

Abstract: There is disclosed means for stably supplying a power to a heater so that the temperature of a sodium-sulfur battery does not lower even in a case where service interruption occurs in a power system in an interconnected system. When a wind power generation device 7 generates the power and a sodium-sulfur battery 3 does not reach a charge end during the service interruption of a power system 1, the output of the wind power generation device 7 is supplied to a heater 6 and the sodium-sulfur battery 3 while controlling the charge of the sodium-sulfur battery 3 so as to satisfy PG=PH+PNC (PG: the output of the power generation device, PH: the power to be supplied to the heater, and PNC: the power to be charged into the sodium-sulfur battery).

Abstract: An operation guidance program of a sodium-sulphur battery includes a unit that input an operation output and a time zone, a unit that continuously inputs the remaining battery capacity and the battery temperature, a unit that predicts the remaining battery capacity of the sodium-sulphur battery and the battery temperature of the sodium-sulphur battery at the final time, a unit that compares the predicted remaining battery capacity with a standard smallest capacity recorded in advance and outputs guidance when the remaining battery capacity is smaller, and a unit that compares the predicted battery temperature with a standard highest temperature recorded in advance and outputs guidance when the battery temperature is higher than the standard highest temperature.

Abstract: A control system for a sodium-sulfur battery, which is composed of a plurality of battery modules connected in series, includes a control device having at least a temperature measuring unit for measuring a temperature of each battery module, a voltage measuring unit for measuring a voltage thereof, and a current measuring unit for measuring a current thereof assembled as a single control device. Preferably, the system includes a unit for detecting the end of discharge and the end of charge. Thus, the time lag in the detection of the end of discharge and the end of charge may be prevented. The reliability of a NaS battery during long-term operation is improved. A fluctuation in the power consumption of heaters during the driving of the NaS battery is reduced. The space required for installing power equipment such as a transformer may be omitted.

Abstract: A control system for a sodium-sulfur battery, which is composed of a plurality of battery modules connected in series, includes a control device having at least a temperature measuring unit for measuring a temperature of each battery module, a voltage measuring unit for measuring a voltage thereof, and a current measuring unit for measuring a current thereof assembled as a single control device. Preferably, the system includes a unit for detecting the end of discharge and the end of charge. Thus, the time lag in the detection of the end of discharge and the end of charge may be prevented. The reliability of a NaS battery during long-term operation is improved. A fluctuation in the power consumption of heaters during the driving of the NaS battery is reduced. The space required for installing power equipment such as a transformer may be omitted.