Apparatus for manufacturing all-solid-state battery comprising reference electrode and manufacturing method using same

Patent metadata

Field	Value
Publication number	US-2022115707-A1
Application number	US-202117398639-A
Country	US
Kind code	A1
Filing date	Aug 10, 2021
Priority date	Oct 12, 2020
Publication date	Apr 14, 2022
Grant date	—

Abstract

An apparatus for manufacturing an all-solid-state battery includes: a mold unit which includes a first hole extending vertically so as to have a shape and a width identical with a shape and a width of the all-solid-state battery, and a second hole extending horizontally so as to horizontally communicate with the first hole; a first pressing unit which includes a first protrusion member corresponding to the first hole, which is coupled with an upper part of the mold unit, and which presses downwards raw materials of the all-solid-state battery filling the first hole, and a second pressing unit which includes a second protrusion member corresponding to the first hole, which is coupled with a lower part of the mold unit, and which presses upwards the raw materials of the all-solid-state battery filling the first hole.

First claim

What is claimed is:

1 . An apparatus for manufacturing an all-solid-state battery, comprising:
a mold unit which includes:
a first hole extending vertically so as to have a shape and a width identical with those of the all-solid-state battery; and
a second hole extending horizontally so as to horizontally communicate with the first hole;
a first pressing unit which includes a first protrusion member corresponding to the first hole, the first protrusion member coupled with an upper part of the mold unit and configured to press downwards raw materials of the all-solid-state battery filling the first hole; and a second pressing unit which includes a second protrusion member corresponding to the first hole, the second protrusion coupled with a lower part of the mold unit and configured to press upwards the raw materials of the all-solid-state battery filling the first hole.

2 . The apparatus of claim 1 , wherein the mold unit further includes an insulation member disposed adjacent so as to define the first hole.

3 . The apparatus of claim 1 , wherein the mold unit further includes an insulation member disposed on adjacent so as to define the second hole.

4 . The apparatus of claim 1 , wherein the first pressing unit and the second pressing unit include an electroconductive material.

5 . A method of manufacturing an all-solid-state battery comprising a reference electrode using the apparatus of claim 1 , comprising:
coupling the second pressing unit with the lower part of the mold unit so that the second protrusion member extends through the first hole; adding a first solid electrolyte powder onto the second protrusion member; coupling the first pressing unit with the upper part of the mold unit so that the first protrusion member extends through the first hole, thus pressing the first solid electrolyte powder, thereby forming a first solid electrolyte layer; detaching the first pressing unit and inserting the reference electrode through the second hole, and disposing the reference electrode on the first solid electrolyte layer; adding a second solid electrolyte powder onto the reference electrode; coupling the first pressing unit with the upper part of the mold unit so that the first protrusion member extends through the first hole and pressing the second solid electrolyte powder, thereby forming a second solid electrolyte layer; detaching the first pressing unit and disposing an anode layer on the second solid electrolyte layer; detaching the second pressing unit and disposing a cathode layer on the first solid electrolyte layer; and coupling the mold unit, the first pressing unit, and the second pressing unit, and compressing the coupled structure in the first hole.

6 . The method of claim 5 , wherein the first solid electrolyte powder and the second solid electrolyte powder include a sulfide-based solid electrolyte.

7 . The method of claim 5 , wherein the reference electrode includes an electric wire which includes at least one selected from the group consisting of tungsten (W), aluminum (Al), nickel (Ni), stainless steel (SUS), and a combination thereof, the electric wire being coated with at least one precious metal selected from the group consisting of gold (Au), silver (Ag), platinum (Pt), and a combination thereof.

8 . The method of claim 5 , further comprising inserting a stopping unit into the second hole to prevent exposure of the coupled structure in the first hole to an outside through the second hole.

9 . A method of manufacturing an all-solid-state battery comprising a reference electrode using the apparatus of claim 1 , comprising:
coupling the second pressing unit with the lower part of a mold unit so that the second protrusion member extends through the first hole; disposing a cathode layer on the second protrusion member; adding a first solid electrolyte powder onto the cathode layer; coupling the first pressing unit with the upper part of the mold unit so that the first protrusion member extends through the first hole, and pressing the first solid electrolyte powder, thereby forming a first solid electrolyte layer; detaching the first pressing unit and inserting the reference electrode through the second hole, and disposing the reference electrode on the first solid electrolyte layer; adding a second solid electrolyte powder onto the reference electrode; coupling the first pressing unit with the upper part of the mold unit so that the first protrusion member extends through the first hole, and pressing the second solid electrolyte powder, thereby forming a second solid electrolyte layer; detaching the first pressing unit and disposing an anode layer on the second solid electrolyte layer; and coupling the mold unit, the first pressing unit, and the second pressing unit, and compressing the coupled structure in the first hole.

10 . The method of claim 9 , wherein the first solid electrolyte powder and the second solid electrolyte powder include a sulfide-based solid electrolyte.

11 . The method of claim 9 , wherein the reference electrode includes an electric wire which includes at least one selected from the group consisting of tungsten (W), aluminum (Al), nickel (Ni), stainless steel (SUS), and a combination thereof, and the electric wire being coated with at least one precious metal selected from the group consisting of gold (Au), silver (Ag), platinum (Pt), and a combination thereof.

12 . The method of claim 9 , further comprising inserting a stopping unit into the second hole to prevent exposure of the coupled structure in the first hole to an outside through the second hole.

Assignees

• Hyundai Motor Co Ltd
• Kia Corp
• Institute For Research & Industry Cooperation Pusan National Univ

Inventors

• Seong Ju Yeong
• Song In Woo
• Min Hong Seok
• Yoon Yong Sub
• Kim Yun Sung
• Jang Yong Jun
• Noh Sung Woo
• Kim In Chul
• Ha A Reum
• Shin Heon Cheol
• Gwon Yong Guk
• Jeong Ji Ung
• Ha Seong Hyeok

Classifications

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/0562

  Solid materials · CPC title

• H01M10/0585 Primary

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

• H01M2300/0068

  inorganic · CPC title