MANUFACTURING DEVICE FOR ELECTRODE FOR A LITHIUM-ION BATTERY AND METHOD FOR MANUFACTURING ELECTRODE FOR A LITHIUM-ION BATTERY

Abstract

A manufacturing device for an electrode of a lithium-ion battery, comprising: a placing section for placing an electrode material for a lithium-ion battery on a substrate, the electrode material for a lithium-ion battery consisting of an electrode composition including electrode active material particles and a frame-like member placed annularly so as to surround the electrode composition; a pressure reduction packaging section for reducing pressure and packaging the electrode material for a lithium-ion battery together with the substrate so as to fix the electrode composition by the frame-like member and a packaging material; and a pressure molding section for roll-pressing the electrode composition fixed by the frame-like member and the packaging material

Description

Claims

1. A manufacturing device for an electrode of a lithium-ion battery, comprising: a placing section for placing an electrode material for a lithium-ion battery on a substrate, the electrode material for a lithium-ion battery consisting of an electrode composition including electrode active material particles and a frame-like member placed annularly so as to surround the electrode composition;a pressure reduction packaging section for reducing pressure and packaging the electrode material for a lithium-ion battery together with the substrate so as to fix the electrode composition by the frame-like member and a packaging material; anda pressure molding section for roll-pressing the electrode composition fixed by the frame-like member and the packaging material.

2. The manufacturing device for an electrode of a lithium-ion battery according to claim 1, wherein the substrate is an electrode current collector.

3. The manufacturing device for an electrode of a lithium-ion battery according to claim 1, wherein the pressure molding section includes a pair of roller, and the interval between the pair of roller is three times or more the volume average particle size of the electrode active material particles.

4. A method for manufacturing electrode for a lithium-ion battery, comprising the steps of: placing an electrode material for a lithium-ion battery on a substrate, the electrode material for a lithium-ion battery consisting of an electrode composition including electrode active material particles and a frame-like member placed annularly so as to surround the electrode composition; pressure reduction packaging for reducing pressure and packaging the electrode material for a lithium-ion battery together with the substrate to fix the electrode composition by the frame-like member ana a packaging material; and pressure molding the electrode composition by roll-pressing the electrode composition fixed by the frame-like member and the packaging material.

5. The method for manufacturing electrode for a lithium-ion battery according to claim 4, wherein the substrate is an electrode current collector.

6. The method for manufacturing electrode for a lithium-ion battery according to claim 4, wherein the pressure molding section includes a pair of roller, and the interval between the pair of roller is three times or more the volume average particle size of the electrode active material particles.

7. The method for manufacturing electrode for a lithium-ion battery according to claim 4, wherein the average particle size of the electrode active material particles is 5 to 200 µm.

8. The method for manufacturing electrode for a lithium-ion battery according to claim 4, wherein the degree of vacuum of the electrode composition fixed by the frame-like member and the packaging material is -70 kPa or less.

9. A manufacturing device for an electrode of a lithium-ion battery, comprising: a conveying section for conveying a conveying substrate with an electrode material for a lithium-ion battery mounted thereon, the electrode material for a lithium-ion battery consisting of an electrode composition including electrode active material particles and a frame-like member placed annularly so as to surround the electrode composition;a coating film supplying section for covering a surface of the electrode material for a lithium-ion battery on the side opposite to a surface on which the conveying substrate is placed;a pressure reduction packaging section for reducing pressure in a space sandwiched between the conveying substrate and the coating film so as to fix the electrode composition placed on the conveying substrate by the frame-like member and a packaging material; anda pressure molding section for roll-pressing the electrode composition fixed by the frame-like member and the packaging material.

10. The manufacturing device for an electrode of a lithium-ion battery according to claim 9, comprising a separating section for releasing the pressure reduction of the space sandwiched between the conveying substrate and the coating film and also separating the coating film from the electrode material for a lithium-ion battery.

11. The manufacturing device for an electrode of a lithium-ion battery according to claim 9, wherein a process by the coating film supplying section and a process by the pressure molding section are successively carried out while conveying the conveying substrate by the conveying section.

12. The manufacturing device for an electrode of a lithium-ion battery according to claim 9, wherein the conveying substrate is an attraction belt, and the pressure reduction packaging section reduced pressure in the space sandwiched between the attraction belt and the coating film through a through-hole formed on the attraction belt.