Metal-ion battery

Patent metadata

Field	Value
Publication number	US-11296329-B2
Application number	US-201715813791-A
Country	US
Kind code	B2
Filing date	Nov 15, 2017
Priority date	Dec 16, 2016
Publication date	Apr 5, 2022
Grant date	Apr 5, 2022

Abstract

A metal-ion battery is provided. The metal-ion secondary battery includes a first chamber, a second chamber, and a control element. A positive electrode, a negative electrode, a separator disposed between the positive electrode and the negative electrode, and a first electrolyte are disposed within the first chamber. A second electrolyte is disposed within the second chamber, and wherein components and/or concentration of the first electrolyte are different from those of the second electrolyte. The control element determines whether to introduce the second electrolyte disposed within the second chamber into the first chamber via a first pipeline.

First claim

What is claimed is:

1. A metal-ion battery, comprising:
a first chamber comprising a positive electrode, a negative electrode, a separator, and a first electrolyte disposed within the first chamber, wherein the separator is disposed between the positive electrode and the negative electrode, and wherein the first electrolyte comprises a first ionic liquid and a first metal halide;
a second chamber comprising a second electrolyte disposed within the second chamber, wherein components and/or concentration of the first electrolyte are different from those of the second electrolyte, and wherein the second electrolyte comprises a second metal halide and a second ionic liquid;
a control element determining whether to introduce the second electrolyte disposed within the second chamber into the first chamber via a first pipeline, and wherein a molar ratio of the second metal halide to the second ionic liquid is greater than a molar ratio of the first metal halide to the first ionic liquid when the second electrolyte comprises the second metal halide and the second ionic liquid;
a sensor element, wherein the sensor element monitors a conductivity, temperature, specific gravity, or viscosity of the first electrolyte within the first chamber, and wherein sensor element presents an obtained value of conductivity, temperature, specific gravity, or viscosity to the control element;
a third chamber, wherein a third electrolyte is disposed within the third chamber, wherein components and/or concentration of the first electrolyte, second electrolyte and third electrolyte are different from each other, and wherein the control element determines whether to introduce the third electrolyte disposed within the third chamber into the first chamber via the second pipeline; and
a filter element, wherein the control element determines whether to introduce the first electrolyte disposed within the first chamber into the filter element via a third pipeline, wherein the first electrolyte is divided into the second electrolyte and the third electrolyte by the filter element, and wherein the second electrolyte flows into the second chamber from the filter element via a fourth pipeline, and the third electrolyte flows into the third chamber from the filter element via a fifth pipeline.

2. The metal-ion battery as claimed in claim 1 , wherein the molar ratio of the first metal halide to the first ionic liquid is from 1.1:1 to 1.8:1.

3. The metal-ion battery as claimed in claim 1 , wherein the first metal halide is the same as the second metal halide.

4. The metal-ion battery as claimed in claim 1 , wherein the first ionic liquid is the same as the second ionic liquid.

5. The metal-ion battery as claimed in claim 1 , when the conductivity or the viscosity of the first electrolyte is greater than a predetermined value, the control element introduces the second electrolyte within the second chamber into the first chamber via the first pipeline.

6. The metal-ion battery as claimed in claim 1 , wherein when the temperature or the specific gravity of the first electrolyte is less than a predetermined value, the control element introduces the second electrolyte within the second chamber into the first chamber via the first pipeline.

7. The metal-ion battery as claimed in claim 1 , wherein the first pipeline is a unidirectional pipeline, thus the first electrolyte within the first chamber cannot flow into the second chamber via the first pipeline.

8. The metal-ion battery as claimed in claim 1 , wherein there is no pathway for the first electrolyte to proceed from the first chamber to the second chamber.

9. The metal-ion battery as claimed in claim 1 , wherein the first ionic liquid is the same as the third ionic liquid.

10. The metal-ion battery as claimed in claim 1 , wherein the first metal halide is the same as the third metal halide.

11. The metal-ion battery as claimed in claim 1 , wherein a molar ratio of the third metal halide to the third ionic liquid is less than the molar ratio of the first metal halide to the first ionic liquid.

12. The metal-ion battery as claimed in claim 1 , wherein when the conductivity or the viscosity of the first electrolyte is less than a predetermined value, the control element introduces the third electrolyte within the third chamber into the first chamber via the second pipeline.

13. The metal-ion battery as claimed in claim 1 , wherein when the temperature or the specific gravity of the first electrolyte is greater than a predetermined value, the control element introduces the third electrolyte within the third chamber into the first chamber via the second pipeline.

14. The metal-ion battery as claimed in claim 1 , wherein the second pipeline is a unidirectional pipeline, thus the first electrolyte within the first chamber cannot flow into the third chamber via the second pipeline.

15. The metal-ion battery as claimed in claim 1 , wherein there is no pathway for the first electrolyte to proceed from the first chamber to the third chamber.

16. The metal-ion battery as claimed in claim 1 , wherein the second electrolyte comprises the second metal halide and the second ionic liquid and the molar ratio of the second metal halide to the second ionic liquid is from 1.5:1 to 10:1.

17. The metal-ion battery as claimed in claim 1 , wherein the third electrolyte further comprising a third metal halide and a third ionic liquid, and wherein the molar ratio of the third metal halide to the third ionic liquid is from 0.1:1 to 0.9:1.

Assignees

• Ind Tech Res Inst

Inventors

• Chiang Chien-Chih
• Chen Kuang-Yao
• Wu Chun-Hsing
• Yang Chang-Chung

Classifications

• H01M4/0404

  by coating on electrode collectors · CPC title

• H01M4/663

  containing carbon or carbonaceous materials as conductive part, e.g. graphite, carbon fibres · CPC title

• H01M10/0569

  characterised by the solvents · CPC title

• H01M10/054 Primary

  Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium · CPC title

• H01M10/42

  Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells (H01M10/60 takes precedence) · CPC title