All-solid-state lithium battery and method for fabricating the same

Patent metadata

Field	Value
Publication number	US-11757158-B2
Application number	US-201916764118-A
Country	US
Kind code	B2
Filing date	Aug 12, 2019
Priority date	Aug 21, 2018
Publication date	Sep 12, 2023
Grant date	Sep 12, 2023

Abstract

An all-solid-state lithium battery is disclosed, including a substrate; and a plurality of layers of lithium battery units stacked on the substrate. Each layer of lithium battery unit of the plurality of layers of lithium battery units includes at least two electrode collector layers, a first electrode layer, an electrolyte layer and a second electrode layer. Two neighboring layers of lithium battery units share one of the electrode collector layers. A method for fabricating an all-solid-state lithium battery is further disclosed.

First claim

What is claimed is:

1. An all-solid-state lithium battery, comprising:
a substrate; and
a plurality of layers of lithium battery units stacked on the substrate, wherein each layer of lithium battery unit of the plurality of layers of lithium battery units comprises at least two electrode collector layers, a first electrode layer, an electrolyte layer, and a second electrode layer;
wherein two neighboring layers of lithium battery units share one of the electrode collector layers;
wherein the electrode collector layers comprise a first electrode collector layer and a second electrode collector layer, first electrode collector layers of the odd-numbered layer of lithium battery units are connected by a first electrode collector connection part, and second electrode collector layers of the even-numbered layer of lithium battery units are connected by a second electrode collector connection part;
wherein electrolyte layers of two neighboring layers of lithium battery units are connected by electrolyte connection part; and
wherein the electrolyte connection part is provided with a first via and a second via, the first via is provided with the first electrode collector connection part, which directly connects first electrode collector layers of respective lithium battery unit the second via is provided with the second electrode collector connection part, which directly connects second electrode collector layers of respective lithium battery unit and the first via and the second via only pass through the electrolyte connection part.

2. The all-solid-state lithium battery of claim 1 , wherein each layer of lithium battery unit comprises: the first electrode collector layer, the first electrode layer, the electrolyte layer, the second electrode layer, and the second electrode collector layer, which are arranged in this order in a direction from the first electrode collector layer of said layer of lithium battery unit to the second electrode collector layer of said layer of lithium battery unit.

3. The all-solid-state lithium battery of claim 2 , wherein the first electrode collector layer is a cathode collector layer, the first electrode layer is a cathode layer, the second electrode layer is an anode layer, and the second electrode collector layer is an anode collector layer.

4. The all-solid-state lithium battery of claim 2 , wherein the first electrode collector layer is an anode collector layer, the first electrode layer is an anode layer, the second electrode layer is a cathode layer, and the second electrode collector layer is a cathode collector layer.

5. The all-solid-state lithium battery of claim 1 , wherein the first via and the second via are perpendicular to the substrate.

6. The all-solid-state lithium battery of claim 1 , wherein the electrolyte connection part and the electrolyte layer comprise a same material.

7. The all-solid-state lithium battery of claim 6 , wherein the electrolyte layer is made from at least one of lithium phosphate, lithium oxide, and lithium titanium phosphate.

8. The all-solid-state lithium battery of claim 1 , wherein the first electrode collector layer and the first electrode collector layer connection part comprise a same material, and the material comprises aluminum.

9. The all-solid-state lithium battery of claim 1 , wherein the second electrode collector layer and the second electrode collector layer connection part comprise a same material, and the material comprises copper.

10. The all-solid-state lithium battery of claim 1 , further comprising a protection layer, which is arranged at the periphery of the plurality of layers of lithium battery units.

11. The all-solid-state lithium battery of claim 1 , wherein the first electrode collector connection part and the second electrode collector connection part contact the electrolyte layer directly.

Assignees

• Boe Technology Group Co Ltd

Inventors

• Zhou Quanguo
• Zhou Lijia
• Yan Rongjian
• Wang Zhidong
• Cheng Jiuyang
• Lan Ronghua
• Lu Yancheng
• Yang Qingguo

Classifications

• H01M10/0585 Primary

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

• H01M10/052 Primary

  Li-accumulators · CPC title

• H01M50/534 Primary

  characterised by the material of the leads or tabs · CPC title

• Y02E60/10

  Energy storage using batteries · CPC title

• H01M10/0562

  Solid materials · CPC title