Electrode plate forming apparatus

Patent metadata

Field	Value
Publication number	US-12506136-B2
Application number	US-202418435895-A
Country	US
Kind code	B2
Filing date	Feb 7, 2024
Priority date	Nov 29, 2021
Publication date	Dec 23, 2025
Grant date	Dec 23, 2025

Abstract

An electrode plate forming apparatus includes an unwinding device, a lithium replenishment device, a plurality of winding devices and a protection device. The lithium replenishment device is configured to clad a lithium strip to a surface of a master electrode plate body and form a master electrode plate. A slitting device is configured to slit the master electrode plate into a plurality of electrode plates. The winding devices are configured to pull the electrode plates to travel, each of the winding devices winding one corresponding electrode plate. The slitting device is disposed in an accommodating cavity of the protection device. The protection device is configured to at least partially separate particles from an external environment in a case that the slitting device slits the master electrode plate and generates the particles.

First claim

What is claimed is:

1 . An electrode plate forming apparatus, comprising:
an unwinding device, configured to dispose a master electrode plate body; a lithium replenishment device, configured to clad a lithium strip to a surface of the master electrode plate body and form a master electrode plate; a slitting device for slitting the master electrode plate into a plurality of electrode plates; a plurality of winding devices, configured to pull the electrode plates to travel, each of the winding devices winding one corresponding electrode plate; and a protection device, provided with an accommodating cavity in which the slitting device is disposed, and configured to at least partially separate particles from an external environment in a case that the slitting device slits the master electrode plate and generates the particles.

2 . The electrode plate forming apparatus according to claim 1 , wherein the protection device comprises a cover body with the accommodating cavity formed therein, the cover body being provided with an electrode plate inlet and an electrode plate outlet oppositely disposed, the electrode plate inlet being configured to allow the master electrode plate to enter the accommodating cavity, and the electrode plate outlet being configured to allow the slit electrode plates to be pulled out from the accommodating cavity.

3 . The electrode plate forming apparatus according to claim 1 , wherein the electrode plate forming apparatus further comprises a negative pressure device, the negative pressure device being configured to suck air in the accommodating cavity.

4 . The electrode plate forming apparatus according to claim 1 , further comprising:
an inert gas input device communicating with the accommodating cavity, the inert gas input device being configured to input inert gas into the accommodating cavity.

5 . The electrode plate forming apparatus according to claim 4 , wherein the inert gas input device comprises:
an input pipeline, communicating with the accommodating cavity for inputting the inert air into the accommodating cavity; an output pipeline, communicating with the accommodating cavity for outputting the inert air in the accommodating cavity; and a cooling and pumping unit, disposed outside the accommodating cavity, the cooling and pumping unit communicating with the input pipeline and the output pipeline, for cooling the inert air and supplying power to circular flow of the inert air between the accommodating cavity and the cooling and pumping unit.

6 . The electrode plate forming apparatus according to claim 5 , wherein the inert gas input device further comprises a filter unit, the filter unit being disposed between the output pipeline and the cooling and pumping unit and configured to filter the inert gas.

7 . The electrode plate forming apparatus according to claim 1 , wherein the electrode plate forming apparatus further comprises a particle collecting device communicating with the accommodating cavity, the particle collecting device being configured to collect the particles in the accommodating cavity.

8 . The electrode plate forming apparatus according to claim 7 , wherein the particle collecting device comprises:
a dust suction assembly, communicating with the accommodating cavity for sucking the particles in the accommodating cavity; and a filter assembly, communicating with the dust suction assembly for filtering out the particles sucked by the dust suction assembly.

9 . The electrode plate forming apparatus according to claim 7 , wherein the electrode plate forming apparatus further comprises an electric lead, the electric lead electrically connecting the particle collecting device with a ground for eliminating static electricity of the particle collecting device.

10 . The electrode plate forming apparatus according to claim 1 , wherein:
the slitting device comprises a cutter, the cutter being configured to slit the master electrode plate; and the electrode plate forming apparatus further comprises a demoulding device, the demoulding device being configured to spray a mould release agent to the cutter; and/or, the electrode plate forming apparatus further comprises a lubricating device, the lubricating device being configured to spray a lubricant to the cutter.

Assignees

• Contemporary Amperex Technology Hong Kong Ltd

Inventors

• Chen Shitong
• Xie Bin
• Lu Yi
• Fei Xinlu
• Li Keqiang
• Zhao Fenggang

Classifications

• B26D7/088

  by cleaning or lubricating (sterilizing B26D1/00) · CPC title

• B23D19/00

  Shearing machines or shearing devices cutting by rotary discs (by friction saw-discs B23D45/00) · CPC title

• H01M10/052

  Li-accumulators · CPC title

• H01M10/0587

  of accumulators having only wound construction elements, i.e. wound positive electrodes, wound negative electrodes and wound separators · CPC title

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title