Battery system with excellent controllability for temperature

• US 7,264,902 B2
• Filed: 06/19/2002
• Issued: 09/04/2007
• Est. Priority Date: 07/04/2001
• Status: Expired due to Fees

• Current Assignee: Nissan Motor Co., Ltd.
• Original Assignee: Nissan Motor Co., Ltd.
• Inventors: Horie, Hideaki, Ohsawa, Yasuhiko
• Primary Examiner(s): Kalafut; Stephen
• Assistant Examiner(s): ANTHONY, JULIAN
• Application Number:
  US10/173,612
• Publication Number:
  US 20030008205A1
• Time in Patent Office: 1,903 Days
• Field of Search: 429/71, 429/120, 429/231.95, 429/148
• US Class Current: 429/120
• CPC Class Codes: H01M 10/0562 Solid materials
• CPC Class Codes: H01M 10/0565 Polymeric materials, e.g. gel-type or solid-type
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/615 Heating or keeping warm
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/643 Cylindrical cells
• CPC Class Codes: H01M 10/647 Prismatic or flat cells, e.g. pouch cells
• CPC Class Codes: H01M 10/6555 arranged between the cells
• CPC Class Codes: H01M 10/6557 arranged between the cells
• CPC Class Codes: H01M 4/505 of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
• CPC Class Codes: H01M 4/525 of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
• CPC Class Codes: H01M 6/42 Grouping of primary cells into batteries H01M6/40 takes precedence
• CPC Class Codes: H01M 6/5038 Heating or cooling of cells or batteries
• 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

Abstract

A battery system of the present invention includes one or more cell groups, each having a positive electrode, a negative electrode and a solid electrolyte layer, and one or more heat mediating structures adjacent to the cell groups. The cell groups and the heat mediating structures are alternately stacked. A solid electrolyte is applied to the electrolyte layer. The respective cell groups have a thin plate shape, and adjacent thereto, the heat mediating structures are provided.

Claims

1. A battery system, comprising:

one or more cell groups, each including a positive electrode, a negative electrode and a solid electrolyte layer; and

one or more heat mediating structures adjacent the cell groups, each of the heat mediating structures including a fluid path configured to conduct a fluid heat medium and a wave-like wall having angular tops and angular bottoms;

wherein the cell groups and the heat mediating structures are alternately stacked, and

wherein the heat mediating structures connect with external heating means.

2. The battery system according to claim 1, wherein:

each of the fluid paths being composed of any of metals and conductors.

3. The battery system according to claim 1, wherein:

each of the fluid paths being composed of an electrically insulating material.

4. The battery system according to claim 1, wherein:

each of the heat mediating structures is composed of a solid material having heat conductivity.

5. The battery system according to claim 1, wherein:

each of the heat mediating structures is composed of one or more materials selected from the group consisting of metals, silicon carbide and silicon nitride; and

an interface of the heat mediating structure to the cell group includes an insulating layer.

6. The battery system according to claim 1, wherein:

the solid electrolyte layer is composed of any of polymer ion-conducting materials and inorganic ion-conducting materials.

7. The battery system according to claim 1, wherein:

a positive charge carrier in the solid electrolyte layer is lithium ions.

8. The battery system according to claim 1, wherein:

the positive electrode is composed of any one or more of lithium cobaltate, lithium nickelate and lithium manganate.

9. The battery system according to claim 1, wherein:

the negative electrode is composed of any one or more of graphite, hard carbon and lithium titanate.

10. The battery system according to claim 1, wherein the heat mediating structures are configured to circulate the fluid heat medium between the external heating means.

11. The battery system according to claim 1, wherein each of the cell groups comprises a plurality of cells, the cells being spaced and connected in parallel via the heat mediating structures.

12. The battery system according to claim 11, wherein the cell groups are buried in a resin.