Maxwell Technologies, Inc.

Ucap Power, Inc.

Mikael Setterberg

John Michael Miller

Thomas J Dougherty

Priya Bendale

Ilya Kaminsky

Robert Shaw Lynds

Jeremy Michael Cowperthwaite

Ha Q Hung

Xavier Maynard

Andre Milewski

David Rechel

Gianni Sartorelli

Stefan Werkstetter

André Milewski

An apparatus for storing energy includes a plurality of energy storage cells, a switching circuit configured to control a transient voltage support to a battery provided by the plurality of energy storage cells, a charging circuit configured to charge the plurality of energy storage cells, and a processing system. The processing system is configured to control the charging circuit to charge the plurality of energy storage cells, and control the switching circuit to control the transient voltage support of the plurality of energy storage cells to the battery. The switching circuit and the charging circuit provide parallel paths between the plurality of energy storage cells and the battery terminal.

System and method for providing bidirectional transient voltage support and power

This disclosure provides systems, methods and apparatus for a combined battery/capacitor energy storage device. The device includes a first device terminal, a second device terminal, a battery connected between the first terminal and the second terminal, and a capacitor connected in parallel with the battery. In one aspect, a rectifier is connected between the first terminal and the capacitor, the rectifier configured to allow substantially unidirectional current flow from the first terminal to the capacitor. In another aspect, a switch is between the capacitor and the first terminal. In another aspect, a current limiter extends between the first terminal and the capacitor.

Ultracapacitor and battery combination with electronic management system

A device () monitors and/or balances an ultracapacitor () and/or a module () comprising a plurality of ultracapacitors () connected in series, the module () being connectable in series or in parallel with other modules (). The device comprises an electronic board () comprising digital control and/or command means, such as a microcontroller (), executing a program for monitoring and balancing the ultracapacitor () and/or the module (). The relative capacitances of the capacitors are measured, and this information is employed to determine when to carry out a controlled discharge of particular capacitors. Temperature information is also employed to determine when to carry out a controlled discharge of particular capacitors. In this way the lifetime of any particular capacitor is, desirably, extended to be no shorter than the lifetime of other longer-lived capacitors in the module.

Maximizing life of capacitors in series modules

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La Jolla, CA, United States of America

Mikael Setterberg