The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 01, 2016
Filed:
Sep. 21, 2015
Celgard, Llc, Charlotte, NC (US);
Xuefa Li, Matthews, NC (US);
C. Glen Wensley, Rock Hill, SC (US);
Zhengming Zhang, Charlotte, NC (US);
Celgard LLC, Charlotte, NC (US);
Abstract
A method for detecting the position of a separator relative to electrodes in a secondary lithium battery includes the steps of: providing a secondary lithium battery including a positive electrode, a negative electrode, a X-ray sensitive separator located between the electrodes, and a can or pouch housing the electrodes and separator, the X-ray sensitive separator comprising a microporous membrane having a X-ray detectable element dispersed therein or thereon, the X-ray detectable element comprising at least 2 and no greater than 20 weight % of the membrane; subjecting the secondary lithium battery to X-ray radiation; determining the position of the separator relative to the electrodes; and approving or rejecting the secondary lithium battery based upon the position of the separator relative to the electrodes.