Apparatus and method for manufacturing electrode substrate of secondary battery and electrode substrate manufactured by the method

Patent metadata

Field	Value
Publication number	US-2025273649-A1
Application number	US-202418811422-A
Country	US
Kind code	A1
Filing date	Aug 21, 2024
Priority date	Feb 26, 2024
Publication date	Aug 28, 2025
Grant date	—

Abstract

An apparatus for manufacturing an electrode substrate of a secondary battery may include a reinforcement body molding machine configured to mold a reinforcement body from a reinforcement material, a melting furnace configured to melt a substrate material and mix the molded reinforcement body in the melted substrate material for dispersion, a casting machine containing the reinforcement body configured to mold a slab with the melted substrate material produced by the melting furnace, and a rolling mill configured to form an electrode substrate by rolling the slab.

First claim

What is claimed is:

1 . An apparatus for manufacturing an electrode substrate of a secondary battery, the apparatus comprising:
a reinforcement body molding machine configured to mold a reinforcement body from a reinforcement material; a melting furnace configured to melt a substrate material and mix the molded reinforcement body in the melted substrate material for dispersion; a casting machine containing the reinforcement body configured to mold a slab with the melted substrate material produced by the melting furnace; and a rolling mill configured to form an electrode substrate by rolling the slab.

2 . The apparatus as claimed in claim 1 , wherein the reinforcement material inputted into the reinforcement body molding machine comprises a conductive material with greater strength than the substrate material.

3 . The apparatus as claimed in claim 2 , wherein the reinforcement material is one or more materials selected from: tungsten carbide, a carbide-based metal, cobalt, titanium, nickel, iron, carbon steel, alloy steel, heat-treated steel, or carbon fiber.

4 . The apparatus as claimed in claim 1 , wherein a shape of the reinforcement body molded by the reinforcement body molding machine is one or more shapes selected from: a plate shape, a needle shape, a fiber shape, or a linear shape.

5 . The apparatus as claimed in claim 1 , wherein the melting furnace comprises:
a substrate material input unit; a reinforcement body input unit configured to input the reinforcement body molded by the reinforcement body molding machine; a heating unit configured to generate heat for melting the input substrate material; and a stirring unit configured to mix the reinforcement body molded by the reinforcement body molding machine in the melted substrate material for dispersion.

6 . The apparatus as claimed in claim 1 , wherein the melting furnace is further configured to melt the substrate material by heating the substrate material and the molded reinforcement body at a first temperature, and
the first temperature is set to a temperature at which the substrate material melts and the molded reinforcement body does not melt.

7 . The apparatus as claimed in claim 1 , wherein the melting furnace is further configured to melt the substrate material at a first temperature, and receive the molded reinforcement body responsive to the first temperature being adjusted to a second temperature,
the first temperature is set to a temperature at which the substrate material melts and the molded reinforcement body does not melted, and the second temperature is set to a temperature lower than the first temperature.

8 . The apparatus as claimed in claim 1 , further comprising:
a surface coater configured to coat a metal layer on a surface of the formed electrode substrate.

9 . A method for manufacturing an electrode substrate of a secondary battery, the method comprising:
molding a reinforcement body from a reinforcement material; melting a substrate material and mixing the molded reinforcement body in the melted substrate material for dispersion; molding a slab with the melted substrate material comprising the molded reinforcement body; and forming an electrode substrate by rolling the slab.

10 . The method as claimed in claim 9 , wherein the reinforcement material for molding the reinforcement body comprises a conductive material having a greater strength than the substrate material.

11 . The method as claimed in claim 10 , wherein the reinforcement material is one or more materials selected from: tungsten carbide, a carbide-based metal, cobalt, titanium, nickel, iron, carbon steel, alloy steel, heat-treated steel, or carbon fiber.

12 . The method as claimed in claim 9 , wherein a shape of the reinforcement body molded in the molding the reinforcement body is one or more shapes selected from: a plate shape, a needle shape, a fiber shape, or a linear shape.

13 . The method as claimed in claim 9 , wherein the melting the substrate material and mixing the molded reinforcement body in the melted substrate material for dispersion comprises:
melting the substrate material by heating the substrate material and the molded reinforcement body at a first temperature, and wherein the first temperature is set to a temperature at which the substrate material melts and the molded reinforcement body does not melt.

14 . The method as claimed in claim 9 , wherein the melting the substrate material and mixing the molded reinforcement body in the melted substrate material for dispersion comprises:
melting the substrate material at a first temperature, adjusting the first temperature to a second temperature, and receiving the molded reinforcement body after adjusting the first temperature, wherein the first temperature is set to a temperature at which the substrate material melts and the molded reinforcement body does not melt, and the second temperature is lower than the first temperature.

15 . The method as claimed in claim 9 , further comprising:
coating a metal layer at a surface of the formed electrode substrate.

16 . An electrode substrate of a secondary battery manufactured by a method for manufacturing a secondary battery electrode substrate, the method comprising:
molding a reinforcement body from a reinforcement material; melting a substrate material and mixing the molded reinforcement body in the melted substrate material for dispersion; molding a slab using the melted substrate material containing the molded reinforcement body; and forming a substrate by rolling the slab.

17 . The electrode substrate of a secondary battery as claimed in claim 16 , wherein the reinforcement material comprises a conductive material with greater strength than the substrate material.

18 . The electrode substrate of a secondary battery as claimed in claim 16 , wherein the reinforcement material comprises one or more materials selected from: tungsten carbide, a carbide-based metal, cobalt, titanium, nickel, iron, carbon steel, alloy steel, heat-treated steel, or carbon fiber.

19 . The electrode substrate of a secondary battery as claimed in claim 16 , wherein a shape of the reinforcement body molded is one or more shapes selected from a plate shape, a needle shape, a fiber shape, or a linear shape.

20 . The electrode substrate of a secondary battery as claimed in claim 16 , wherein the method further comprises:
coating a metal layer at a surface of the formed substrate.

Assignees

• Samsung Sdi Co Ltd

Inventors

• Lee Hyunjin

Classifications

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M2004/021

  Physical characteristics, e.g. porosity, surface area · CPC title

• H01M4/139

  Processes of manufacture · CPC title

• H01M4/667

  in the form of layers, e.g. coatings · CPC title

• H01M4/666

  in the form of mixed materials (H01M4/668 takes precedence) · CPC title