Motorola Corporation

Motorola Energy Systems, Inc.

Hitendra K Patel

Changming Li

Richard H Jung

Jason N Howard

Lijun Bai

John C Byrne

Darioush Keyvani

Gretchen E Fougere

Kirk S Watson

Craig E Rupp

A multiple cell capacitor (,) includes at least first and second capacitor cells (,) and a cell balancing circuit (,) electrically coupled to the first and second capacitor cells (,). Packaging material (,) encloses the first and second capacitor cells (,) and the cell balancing circuit (,). The cell balancing circuit (,) can include, for each capacitor cell (,), a resistor (,) formed electrically in parallel with that capacitor cell (,).

Capacitor with cell balancing circuit

A hybrid capacitor with improved energy density employs a cathode including an organic material and optionally a gel, solid, or composite electrolyte material. However, like conventional electrolytic capacitors, said hybrid capacitor employs a valve metal and its respective oxide dielectric layer on the anode side of the cell.

Capacitor

An electronic device (220) includes a component (105), such as a microprocessor, that generates heat and an electrochemical capacitor (200) used for thermal management. The electrochemical capacitor (200) has a first region, preferably the perimeter region, including electroactive material (160) and an electrolyte (165) and also has a second region, preferably the inner region, including heat sink material (170). When the component (105) and the electrochemical capacitor (200) are mounted within the device (220), the heat sink material (170) of the capacitor (200) is aligned with the component (105).

Electrochemical capacitor used for thermal management

An energy storage assembly is made of an energy storage device, and electromagnetic interference (EMI) shield, and an adhesive positioned between the EMI shield and the energy storage device for affixing the energy storage device to a surface of the EMI shield. The EMI shield is a metal that is shaped to partially enclose an electrical component other than the energy storage device.

Energy storage device with electromagnetic interference shield

A hybrid cell/capacitor assembly (300) includes a battery cell (100) and a capacitor (200) formed into a thin rectangular sheet and having two leads (205, 210) extending therefrom. The capacitor (200) is wrapped around the battery cell (100) to form the hybrid cell/capacitor assembly (300). The leads (205, 210) of the capacitor (200) can be attached to terminals (105, 100) of the battery cell (100) or to terminals of one or more other cells within a battery pack (600).

Hybrid cell/capacitor assembly for use in a battery pack

An electrochemical capacitor device (10) fabricated of a plurality of stacked subassemblies (12, 14) and capped with end portions (16, 18). The device (10) includes a current conducting electrode (22) having a layer of a second electrode material disposed on each side thereof (40) (42). The device (10) further includes a proton conducting electrolyte.

Growing community of inventors

Palatine, IL, United States of America

Hitendra K Patel