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:
Jan. 04, 2022
Filed:
Dec. 27, 2019
J.e.t. Co., Ltd., Okayama, JP;
Primearth Ev Energy Co., Ltd., Kosai, JP;
Hiroyuki Nishimura, Okayama, JP;
Shigeki Hashimoto, Okayama, JP;
Hideaki Yoshio, Okayama, JP;
Shigeki Saito, Kosai, JP;
So Kudo, Kosai, JP;
Yuji Yamasaki, Osaka, JP;
Kunihiro Takaoka, Osaka, JP;
Hidenori Tagomori, Osaka, JP;
J.E.T. CO., LTD., Satosho-cho, JP;
PRIMEARTH EV ENERGY CO., LTD., Kosai, JP;
Abstract
A manufacturing method for a secondary battery and a manufacturing apparatus for a secondary battery that are applicable to a secondary battery in which an electrolyte solution injection hole has a diameter of 1.5 mm or more are provided. The secondary battery includes a battery case including a cover plate provided with an electrolyte solution injection hole, and a sealing member sealing the electrolyte solution injection hole. The manufacturing method includes a preparing step and a press-fitting step. The preparing step is preparing a cell in which, after an electrolyte solution is injected to the battery case through the electrolyte solution injection hole, the sealing member is disposed on the electrolyte solution injection hole. The press-fitting step is press-fitting the sealing member into the electrolyte solution injection hole while applying press-fitting load and ultrasonic vibration with a frequency of 20 kHz or more in parallel to a press-fitting direction.