Patent · US Active

Lithium sulfur battery pulse charging method and pulse waveform

US9866056B2 · kind B2 · utility

4Cited by

2References

13Claims

0Family size

Assignee

NISSAN NORTH AMERICA, INC. · US

Inventors

Nagappan Ramaswamy · Troy, US
Peter Aurora · Ann Arbor, US
Gregory DiLeo · Ann Arbor, US
Xiaoguang Hao · Farmington Hills, US
Taehee Han · Farmington Hills, US
Rameshwar Yadav · Novi, US
Ellazar Niangar · Redford, US
Kenzo Oshihara · Farmington Hills, US

Key dates

Filing date	Mar 31, 2016
Grant date	Jan 9, 2018
Priority date	—
Expiry date	Mar 31, 2036

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02E60/10
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Provided are methods and apparatus for charging a lithium sulfur (Li—S) battery. The Li—S battery has at least one unit cell comprising a lithium-containing anode and a sulfur-containing cathode with an electrolyte layer there between. One method provides controlled application of voltage pulses at the beginning of the charging process. An application period is initiated after a discharge cycle of the Li—S battery is complete. During the application period, voltage pulses are provided to the Li—S battery. The voltage pulses are less than a constant current charging voltage. Constant current charging is initiated after the application period has elapsed.

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