About 98 results
https://drivepatents.com/patents/990535 · 22 May 2013
A secondary battery has a progressively degrading SOC that is an SOC at which the battery performance degrades during storage, and is charged and discharged by a controller. An information processor holds a first threshold value set in advance and lower th...
https://drivepatents.com/patents/990773 · 15 May 2013
A DC power supply system includes a DC power supply and a secondary battery for backing up the DC power supply. When a voltage of the DC power supply is lower than a voltage of the secondary battery, the DC power system adds an extra voltage to the voltage...
https://drivepatents.com/patents/990999 · 8 May 2013
In a system wherein a rechargeable battery is charged when power consumption is light, and power is discharged from the rechargeable battery when power consumption is heavy, the life span of the rechargeable battery is made to be longer. An estimation unit...
https://drivepatents.com/patents/985359 · 27 Mar 2013
A battery system comprises a battery rack (100) and a rack battery management system BMS (200) for controlling the battery rack, wherein the battery rack includes a plurality of battery trays (110-k) each including a plurality of battery cells, and a plura...
https://drivepatents.com/patents/985831 · 6 Mar 2013
A method of balancing a plurality of battery cells comprises determining an open circuit voltage OCV of at least one of the battery cells, determining a rate of change of the open circuit voltage at a given state of charge of the battery cell from a functi...
https://drivepatents.com/patents/992669 · 27 Feb 2013
A battery pack for electric power tool is provided with a battery and a control circuit. The circuit includes a condition satisfaction determination unit, a continuation satisfaction determination unit, and a sleep-mode transition unit. The condition satis...
https://drivepatents.com/patents/993073 · 6 Feb 2013
A backup power supply device configured to supply an electric power for backup to an optical encoder 11 when a main power supply 13 for driving the optical encoder 11 breaks down, the backup power supply device comprises: a battery 12 configured to storage...
https://drivepatents.com/patents/993037 · 6 Feb 2013
The present invention relates to a control apparatus and a control method which are capable of reliably preventing electric power not required to be returned to an electric power system from flowing out to the electric power system. [0002] A bidirectional ...
https://drivepatents.com/patents/992978 · 6 Feb 2013
The method involves measuring battery voltage (UB) by voltage measurement unit and decreasing battery current (Ic) for a time period (t1) by a load. The time period (t1) is more predeterminable by control unit. The battery voltage measured during the curre...
https://drivepatents.com/patents/994425 · 2 Jan 2013
A power generating unit generates electric power using natural energy, plural secondary battery packs are charged with the electric power generated by the power generating unit, and the secondary battery pack as a power source to be used for an operation c...