Patent application number | Description | Published |
20130221907 | CHARGING APPARATUS - A controller ( | 08-29-2013 |
20130249491 | DISCHARGE CONTROLLER - Remaining capacity calculation section ( | 09-26-2013 |
20130249497 | DISCHARGE CONTROLLER - Remaining capacity calculation section ( | 09-26-2013 |
20130265008 | DISCHARGE CONTROLLER - Remaining capacity calculation section ( | 10-10-2013 |
20130320930 | POWER STORAGE SYSTEM AND SECONDARY BATTERY CONTROL METHOD - A power storage system includes a plurality of secondary battery packs and an upper controller. When causing an additional discharge secondary battery pack that is not being discharged to start being discharged by connecting the additional discharge secondary battery pack in parallel with a discharging secondary battery pack that is being discharged, in a state in which some of the secondary battery packs are being discharged, the upper controller predicts discharge start timing at which inter-terminal voltages of the additional discharge secondary battery pack and the discharging secondary battery pack correspond to each other. Subsequently, the upper controller causes the additional discharge secondary battery pack to start being discharged at the discharge start timing. | 12-05-2013 |
20140009164 | DEGRADATION MEASUREMENT DEVICE, SECONDARY BATTERY PACK, DEGRADATION MEASUREMENT METHOD, AND PROGRAM - A battery sensing section measures a voltage across a secondary battery. A current sensing section measures a current flowing through the secondary battery. A control section holds the value of an external impedance present in a discharge path outside the secondary battery, discharges the secondary battery from a first time to a second time at which an integrated discharge capacity based on a measured discharge current becomes equal to a predetermined discharge capacity reference value, calculates the internal impedance present in the secondary battery at the second time based on the measured voltage, calculates the second open voltage at the second time by multiplying the sum of the external impedance and the internal impedance by the measured discharge current, and calculates the recovered capacity of the secondary battery based on the first open voltage at the first time, the second open voltage and the discharge capacity reference value. | 01-09-2014 |
20150035494 | ELECTRICITY STORAGE SYSTEM, METHOD FOR CONTROLLING SECONDARY BATTERY PACKS, AND SECONDARY BATTERY PACK - In an electricity storage system that has a plurality of secondary battery packs, at the time of switching the object that is to be charged from a first secondary battery pack to a second secondary battery pack that has voltage across terminals lower than that of the first secondary battery pack, by causing a current-limiting circuit of the second secondary battery pack to operate, forms a path for the flow of a charging current for charging secondary batteries that are provided in the second secondary battery pack, and starts charging of the second secondary battery pack while limiting the charging current to a fixed value or less by means of the current-limiting circuit. | 02-05-2015 |
20150207347 | STORAGE BATTERY DEVICE - A voltage measurement unit ( | 07-23-2015 |