Batteries and battery systems

US7056617B2 · kind B2 · utility

Assignee

• The Gillette Company LLC · US

Inventors

• G. Steven Kelsey · Nashua, US
• Yelena Kouznetsova · Brookfield, US
• Boris Makovetski · Danbury, US
• Sathya Motupally · Stamford, US
• Jonathan Daniel O'Neill · Manchester, US
• David L. Pappas · Waltham, US
• Robert Pavlinsky · Oxford, US
• Oleg Podoprigora · New Milford, US
• Thomas C. Richards · Framingham, US
• William Wandeloski · New Milford, US

Key dates

• Filing date: Jan 30, 2002
• Grant date: Jun 6, 2006
• Expiry date: Mar 4, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A non-hermetically sealed, electrochemical power source, includes a first electrode, a second electrode, a separator between the first electrode and the second electrode, and a membrane in fluid communication with an environment external to the battery. The second electrode is between the separator and the membrane. The membrane includes a first portion having a different property, e.g., density, porosity, mass transport resistance, thickness, or gas permeability, than a second portion of the membrane. Methods of designing an electrochemical cell cartridge are also disclosed.