About 40 results
https://drivepatents.com/patents/1086930 · 26 May 2004
In charge rate estimating apparatus and method for a secondary cell, a current flowing through the secondary cell is measured, a voltage across terminals of the secondary cell is measured, an adaptive digital filtering is carried out using a cell model in ...
https://drivepatents.com/patents/1093569 · 3 Sep 2003
It is an object of the invention to provide a charge/discharge control apparatus for a battery pack (12) which is capable of performing SOC control and reducing the SOC variation through simple processes, and a control method thereof. In order to achieve t...
https://drivepatents.com/patents/1099956 · 4 Dec 2002
A detecting method for detecting internal information of an inspective rechargeable battery when said inspective rechargeable battery is charged by a constant current-constant voltage charging regime, comprising at least a step (A) of measuring an elapse o...
https://drivepatents.com/patents/1100201 · 27 Nov 2002
A portable personal computer (2) makes access to a service handling server (1) set up on the Internet (5), and transmits data from a power source monitor (4). The service handling server (1) identifies a model type of the personal computer (2), refers the ...
https://drivepatents.com/patents/1100803 · 30 Oct 2002
Firmware of a battery pack (2) is stored in a rewritable storage device such as a flash memory (8). When troubleshooting or performance improvement is needed, a personal computer main body (host equipment) (1) obtains up-to-date firmware from a storage med...
https://drivepatents.com/patents/1104762 · 2 May 2002
In a method for controlling the switch off of a battery supplied electronic device such as a mobile telephone a fixed shut down voltage value depending on the operation state of the mobile telephone is set. The battery voltage is periodically sampled. The ...
https://drivepatents.com/patents/1105069 · 24 Apr 2002
A battery operable electrical device, such as a mobile telephone or a laptop computer, with a clock frequency generator operable to generate electrical clock frequency signals, and a first electrical circuit adapted to perform a first or main function of t...
https://drivepatents.com/patents/1106559 · 20 Feb 2002
A first series of current pulses is applied to the battery so that the electrolyte is stirred and ready for a second series which are used for measurement. The current pulses are limited to a peak (IMAX) related to the battery capacity and the pulse slope ...
https://drivepatents.com/patents/1112974 · 16 May 2001
A device for determining a state of charge of a battery(10) with high precision regardless of deterioration of the battery(10). After fully charging the battery, the device sets the battery(10) to an arbitrary state of charge. The device then detects the c...
https://drivepatents.com/patents/1113316 · 2 May 2001
The device builds up a series of threshold values of voltage related to charge status, to enable determination of current battery status. The device comprises a measuring circuit (MES) for estimating the state of charge of a rechargeable battery (BAT). Thi...