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:
Jul. 30, 2019
Filed:
Sep. 14, 2016
Applicant:
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Inventors:
Assignee:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/133 (2010.01); H01M 2/16 (2006.01); H01M 10/0525 (2010.01); H01M 4/131 (2010.01);
U.S. Cl.
CPC ...
H01M 2/1686 (2013.01); H01M 4/131 (2013.01); H01M 4/133 (2013.01); H01M 10/0525 (2013.01);
Abstract
A separator includes a separation functional layer and a support layer. The separation functional layer is configured as a denser layer with a smaller pore size and a lower porosity than the support layer. Accordingly, movement of metal foreign objects from the positive electrode plate side to the negative electrode plate side, and precipitation of metal foreign objects on the negative electrode plate side can be inhibited, thereby making it possible to ensure battery performance and safety.