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:
Nov. 12, 2019
Filed:
Mar. 29, 2016
Nec Energy Devices, Ltd., Sagamihara-shi, Kanagawa, JP;
Kenji Watanabe, Kanagawa, JP;
Hideaki Sasaki, Kanagawa, JP;
Envision AESC Energy Devices Ltd., Sagamihara-shi, Kanagawa, JP;
Abstract
The present invention has an object to provide a secondary battery manufacturing method and apparatus capable of impregnating a sufficient amount of electrolyte in an electrode laminated body with simplified work effort while reducing working time and a manufacturing cost. The method of manufacturing a secondary battery according to the present invention comprises the steps of: inserting, into an outer container, an electrode laminated body in which a positive electrode and a negative electrode are laminated with a separator interposed therebetween; sealing an outer peripheral portion of the outer container except for a part thereof before or after the electrode laminated body is inserted; and injecting electrolyte () into the outer container having the electrode laminated body inserted therein, from non-sealed part as an injection port (). In the step of injecting the electrolyte (), injection of the electrolyte () is started in an atmospheric pressure environment, and then the injection of the electrolyte () and pressure reduction of an environmental pressure are performed.