Patent · US Active

Lithium-ion battery

US7807299B2 · kind B2 · utility

22Cited by

125References

49Claims

0Family size

Assignee

Medtronic, Inc. · US

Inventors

William G. Howard · Roseville, US
Craig L. Schmidt · Eagan, US
Erik R. Scott · Maple Grove, US

Key dates

Filing date	Oct 29, 2004
Grant date	Oct 5, 2010
Priority date	—
Expiry date	May 13, 2028

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P70/50
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A lithium-ion battery includes a positive electrode including a positive current collector, a first active material, and a second active material. The battery also includes a negative electrode having a negative current collector and a third active material, the third active material including a lithium titanate material. The first active material, second active material, and third active materials are configured to allow doping and undoping of lithium ions. The second active material exhibits charging and discharging capacity below a corrosion potential of the negative current collector and above a decomposition potential of the first active material.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.