Lithium ion battery, integrated circuit and method of manufacturing a lithium ion battery

• US 9,614,256 B2
• Filed: 03/31/2014
• Issued: 04/04/2017
• Est. Priority Date: 03/31/2014
• Status: Active Grant

• Current Assignee: Infineon Technologies AG
• Original Assignee: Infineon Technologies AG
• Inventors: Karlovsky, Kamil, Janski, Rafael, Sorger, Michael, Forster, Magdalena, Schmut, Katharina, Rajaraman, Vijaye Kumar, Leuschner, Rainer, Goller, Bernhard
• Primary Examiner(s): Chmielecki, Scott J
• Application Number:
  US14/230,086
• Publication Number:
  US 20150280289A1
• Time in Patent Office: 1,100 Days
• Field of Search: None
• CPC Class Codes: H01M 10/0525 Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
• CPC Class Codes: H01M 10/058 Construction or manufacture
• CPC Class Codes: H01M 10/4257 Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 2220/30 Batteries in portable systems, e.g. mobile phone, laptop
• CPC Class Codes: H01M 4/134 Electrodes based on metals, Si or alloys
• CPC Class Codes: H01M 4/386 Silicon or alloys based on silicon
• CPC Class Codes: H01M 4/66 Selection of materials
• CPC Class Codes: H01M 50/103 prismatic or rectangular H01M50/109, H01M50/11 take precedence
• CPC Class Codes: H01M 50/159 Metals
• CPC Class Codes: H01M 50/193 Organic material
• CPC Class Codes: H01M 50/545 formed by the casing of the cells cup shaped terminals adapted for cells having curved cross-section H01M50/56
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02P 70/50 Manufacturing or production processes characterised by the final manufactured product
• CPC Class Codes: Y10T 29/4911 including sealing

Abstract

A lithium ion battery includes a first substrate having a first main surface, and a lid including a conductive cover element, the lid being attached to the first main surface. A cavity is formed between the first substrate and the lid. The battery further includes an electrolyte disposed in the cavity. An anode of the battery includes a component made of a semiconductor material and is formed at the first substrate, and a cathode of the battery is formed at the lid.

Claims

1. A lithium ion battery, comprising:

a first semiconductor substrate having a first main surface;

a lid comprising a conductive cover element, the lid being attached to the first main surface;

a cavity formed between the first semiconductor substrate and the lid;

an electrolyte disposed in the cavity;

an anode formed in the first semiconductor substrate; and

a cathode at the lid.

2. The lithium ion battery according to claim 1, wherein the lid is made of a conductive material to form the conductive cover element.

3. The lithium ion battery according to claim 1, further comprising an insulating layer between the first semiconductor substrate and the lid.

4. The lithium ion battery according to claim 1, wherein:

the lid further comprises a second semiconductor substrate, the conductive cover element being attached to a first main surface of the second semiconductor substrate;

a recess is defined in the second semiconductor substrate; and

the second semiconductor substrate is attached to the first main surface of the first semiconductor substrate.

5. The lithium ion battery according to claim 2, wherein the conductive cover element is a conductive foil.

6. The lithium ion battery according to claim 4, wherein the conductive cover element is a conductive foil and a second main surface of the second semiconductor substrate is attached to the first main surface of the first semiconductor substrate.

7. The lithium ion battery according to claim 4, wherein the recess is formed so as to uncover a second main surface of the conductive cover element.

12. The lithium ion battery according to claim 1, wherein:

the lid further comprises a second insulating substrate, the conductive cover element being attached to a first main surface of the second insulating substrate;

a recess is defined in the second insulating substrate; and

the second insulating substrate is attached to the first main surface of the first semiconductor substrate.

14. The lithium ion battery according to claim 12, wherein the conductive cover element is a conductive foil and a second main surface of the second insulating substrate is attached to the first main surface of the first semiconductor substrate.

8. An integrated circuit formed in a first semiconductor substrate having first main surface, the integrated circuit comprising a lithium ion battery further including:

a lid comprising a conductive cover element, the lid being attached to the first main surface;

a cavity formed between the first semiconductor substrate and the lid;

an electrolyte disposed in the cavity; and

an anode formed in the first semiconductor substrate; and

a cathode at the lid.

9. A lithium ion battery, comprising:

a first substrate having a first main surface;

a lid comprising a conductive cover element, the lid being attached to the first main surface;

a cavity formed between the first substrate and the lid;

an electrolyte disposed in the cavity;

an anode comprising a component made of silicon at the first substrate; and

a cathode at the lid.

10. The lithium ion battery according to claim 9, wherein the lid is made of a conductive material to form the conductive cover element.

11. The lithium ion battery according to claim 9, further comprising an insulating layer between the first substrate and the lid.

13. The lithium ion battery according to claim 10, wherein the conductive cover element is a conductive foil.