About 40 results
https://drivepatents.com/patents/1095728 · 28 May 2003
A circuit 201 that provides a method and apparatus to actively balance capacitor leakage current from series stacked capacitors 207, 209 and disconnects itself when stacked capacitors are configured for doubler operation. In one embodiment, the active circ...
https://drivepatents.com/patents/1096935 · 9 Apr 2003
There is disclosed a connection-switched capacitor storage system having an improved energy efficiency. When the capacitors having their respective parallel monitors are initialized, less power loss occurs than conventional. The capacitor storage system co...
https://drivepatents.com/patents/1098396 · 12 Feb 2003
An internal combustion engine has an electrical generator/motor coupled to the crankshaft. This either receives power from a battery coupled to a circuit having capacitor (2) storage, or takes power to maintain the charge. The circuit provides a voltage co...
https://drivepatents.com/patents/1099387 · 8 Jan 2003
The present invention relates to a supercapacitor balancing method comprising the derivation of current flowing in the supercapacitor from a so-called threshold voltage, predetermined, across the terminals of the supercapacitor, the derivation current bein...
https://drivepatents.com/patents/1099389 · 8 Jan 2003
The present invention relates to a method and system for charging at least one supercapacitor, more particularly adapted to the balancing of supercapacitors. The method comprises a step (22) of deriving the current flowing in the supercapacitor such that, ...
https://drivepatents.com/patents/1105265 · 17 Apr 2002
A device which transfers energy charged in an arbitrary cell among cells C1 to C6 from said cell to the input/output terminals 33, 35 of a unit energy storage device, comprises a transformer T1 having a plurality of coils comprising primary and secondary c...
https://drivepatents.com/patents/1106305 · 6 Mar 2002
A balancing circuit for series-connected electrical energy storage elements, in particular capacitors (C1, C2), is proposed. Each energy storage element is provided with a bypass circuit (3 or 4) for limiting the charging voltage, which contains a voltage-...
https://drivepatents.com/patents/1108298 · 28 Nov 2001
The invention relates to a method and a device for balancing the loads of a plurality of battery cells (4) mounted in series. According to the method of the invention, a current-dissipating loop (10) is mounted in parallel across the terminals of each batt...
https://drivepatents.com/patents/1111147 · 8 Aug 2001
There is disclosed an electrical storage capacitor system (3) that efficiently initializes itself to its initial state during pause intervals between charging/discharging cycles of operation without providing any special initializing cycles. The capacitor ...
https://drivepatents.com/patents/1111988 · 27 Jun 2001
In a battery comprising several, normally identical, modules (1,1'1,1), each with one or more parallelled cells, connected in series, each module is provided with two safeguarding shunt circuits, connected across its terminals (eg. 2',2). Each circuit is c...