US 12,206,086 B2
Device for supplementing electrode sheet with lithium and method for supplementing electrode sheet with lithium
Shitong Chen, Ningde (CN); Zhijie Gong, Ningde (CN); Bin Xie, Ningde (CN); and Lin Ma, Ningde (CN)
Assigned to CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed by CONTEMPORARY AMPEREX TECHNOLOGY (HONG KONG) LIMITED, Hong Kong (CN)
Filed on Jan. 13, 2022, as Appl. No. 17/575,164.
Application 17/575,164 is a continuation of application No. PCT/CN2020/100292, filed on Jul. 4, 2020.
Claims priority of application No. 201921156786.0 (CN), filed on Jul. 22, 2019.
Prior Publication US 2022/0140311 A1, May 5, 2022
Int. Cl. H01M 4/04 (2006.01); H01M 4/1395 (2010.01)
CPC H01M 4/0435 (2013.01) [H01M 4/1395 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A device for supplementing an electrode sheet with lithium, the device comprising:
a second rolling wheel, a lithium ribbon providing mechanism, a first transfer film conveying mechanism, a second transfer film conveying mechanism, an electrode sheet providing mechanism and two first rolling wheels,
wherein the two first rolling wheels are opposite each other, and the second rolling wheel is adjacent to one of the two first rolling wheels;
the lithium ribbon providing mechanism is located upstream from the second rolling wheel and the first rolling wheel adjacent to the second rolling wheel, and the lithium ribbon providing mechanism is used for feeding a lithium ribbon for a space between the second rolling wheel and the first rolling wheel adjacent to the second rolling wheel;
the first transfer film conveying mechanism is located upstream from the second rolling wheel and the first rolling wheel adjacent to the second rolling wheel, and the first transfer film conveying mechanism is used for conveying a first transfer film carrying a first release agent and transferring the first release agent to a first surface of the lithium ribbon;
the second transfer film conveying mechanism is located upstream from the second rolling wheel and the first rolling wheel adjacent to the second rolling wheel, and the second transfer film conveying mechanism is used for conveying a second transfer film carrying a second release agent and transferring the second release agent to a second surface of the lithium ribbon;
the electrode sheet providing mechanism is located upstream from the two first rolling wheels, and the electrode sheet providing mechanism is used for providing an electrode sheet for a space between the two first rolling wheels,
the second rolling wheel and the first rolling wheel adjacent thereto being used for pressing the lithium ribbon with the first release agent and the second release agent transferred on the first surface and the second surface respectively, thereby pressing the lithium ribbon into a lithium foil and making the lithium foil adhere to the first rolling wheel adjacent to the second rolling wheel; and
the two first rolling wheels are used for rolling the first release agent, the lithium foil and the electrode sheet that enter the space between the two first rolling wheels, thereby making the lithium foil adhere to the electrode sheet to form a lithium supplemented electrode sheet;
characterized in that,
the first transfer film conveying mechanism further comprises a first roller, a first unwinding roller, a first winding roller, and a first lubricant coating mechanism, the first unwinding roller is used for unwinding the first transfer film, the first winding roller is used for winding the first transfer film, the first lubricant coating mechanism is used for coating the first transfer film with a first lubricant, the first roller is used for transferring the first release agent to the first surface of the lithium ribbon; and
the second transfer film conveying mechanism further comprises a second roller, a second unwinding roller, a second winding roller, and a second lubricant coating mechanism, the second unwinding roller is used for unwinding the second transfer film, the second winding roller is used for winding the second transfer film, the second lubricant coating mechanism is used for coating the second transfer film with a second lubricant, the second roller is used for transferring the second release agent to the second surface of the lithium ribbon.