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:
Oct. 12, 2021
Filed:
Mar. 11, 2019
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Akira Kano, Osaka, JP;
Kiyohiro Isii, Osaka, JP;
Abstract
A lithium metal secondary battery includes a positive electrode, a negative electrode, a separator, and a nonaqueous electrolyte. The positive electrode and the negative electrode are wound to form an electrode group. The positive and negative electrodes face each other with the separator between the positive and negative electrodes. The electrode group has a space for accommodating at least part of the nonaqueous electrolyte when fully discharged. X and Y satisfy 1.00≤X/Y<1.20, where X is a calculated thickness of the lithium metal which is calculated from design capacity per unit area of the positive electrode, and Y is a virtual thickness of the space when the space is assumed to be formed only between the negative electrode and the separator.