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:
Aug. 06, 2024
Filed:
Jun. 06, 2022
Guangdong Brunp Recycling Technology Co., Ltd., Guangdong, CN;
Hunan Brunp Recycling Technology Co., Ltd., Hunan, CN;
Hunan Brunp Ev Recycling Co., Ltd., Hunan, CN;
Haijun Yu, Guangdong, CN;
Yingsheng Zhong, Guangdong, CN;
Yinghao Xie, Guangdong, CN;
Xuemei Zhang, Guangdong, CN;
Changdong Li, Guangdong, CN;
Guangdong Brunp Recycling Technology Co., Ltd., Guangdong, CN;
Hunan Brunp Recycling Technology Co., Ltd., Hunan, CN;
Hunan Brunp EV Recycling Co., Ltd., Hunan, CN;
Abstract
Disclosed in the present invention is a recovery process for a waste battery electrode sheet, the method comprising the following steps: subjecting a waste battery electrode sheet to shearing, drying and cold treatment, and then rolling and screening same to obtain a first positive electrode material and a first waste electrode sheet; subjecting the first waste electrode sheet to shearing, drying and cold treatment, and then rolling and screening same to obtain a second positive electrode material and a second waste electrode sheet; and roasting the first positive electrode material and the second positive electrode material to obtain a positive electrode powder. In the present invention, the aluminum content in the positive electrode material is reduced by means of step-by-step shearing, and the adhesion performance of a waste positive electrode plate binder is then reduced by means of vacuum freeze-drying and spraying with a quick-cooling agent. The aluminum foil of the positive electrode material does not easily break when being broken after vacuum freeze-drying, and the morphology and output of the aluminum foil after primary shearing and secondary shearing are basically unchanged.