Solid state battery with integrated rate booster

Patent metadata

Field	Value
Publication number	US-9799933-B2
Application number	US-201414468734-A
Country	US
Kind code	B2
Filing date	Aug 26, 2014
Priority date	Aug 28, 2013
Publication date	Oct 24, 2017
Grant date	Oct 24, 2017

Abstract

In accordance with one embodiment, a solid-state battery system includes a first anode, a first cathode, a first solid-state electrolyte layer positioned between the first anode and the first cathode, a housing enclosing the first anode, the first cathode, and the first solid-state electrolyte layer, and at least one thermal control wire positioned within the housing and configured to modify a temperature within the housing.

First claim

The invention claimed is:

1. A solid-state battery system, comprising:
a first anode;
a first cathode;
a first solid-state electrolyte layer positioned between the first anode and the first cathode;
a housing enclosing the first anode, the first cathode, and the first solid-state electrolyte layer;
a first current collector operably connected to the first cathode; and
at least one thermal control wire positioned at an interface of the first current collector and the first cathode and configured to selectively increase a temperature within the housing and selectively decrease the temperature within the housing, wherein the at least one thermal control wire comprises a thermoelectric material.

2. The battery system of claim 1 , wherein the at least one thermal control wire comprises a resistive wire.

3. The battery system of claim 1 , wherein the at least one thermal control wire is in electrical communication with the first anode and the first cathode.

4. The battery system of claim 3 , further comprising:
a variable resistive load, wherein the at least one thermal control wire is in electrical communication with the first anode through the variable resistive load; and
a battery management system configured to control the variable resistive load to selectively increase the temperature in the first solid-state electrolyte layer.

5. The battery system of claim 4 , wherein the battery management system is further configured to:
identify a failure of the cell; and
cool the first solid-state electrolyte layer using the at least one thermal control wire in response to the identified failure.

6. The battery system of claim 1 , further comprising:
a second current collector operably connected to the first anode, wherein the at least one thermal control wire is further positioned at an interface of the second current collector and the first anode.

7. The battery system of claim 1 , wherein the at least one thermal control wire is configured to selectively cool the first current collector and selectively heat the first solid-state electrolyte layer.

8. The battery system of claim 1 , further comprising:
a second anode within the housing and spaced apart from the first cathode by a base layer;
a second cathode; and
a second solid-state electrolyte layer positioned between the second anode and the second cathode, wherein the at least one thermal control wire is located within the second solid-state electrolyte layer.

9. A method of forming a solid-state battery system, comprising:
providing a first anode within a housing;
providing a first cathode within the housing;
positioning a first solid-state electrolyte layer within the housing between the first anode and the first cathode;
positioning at least one thermal control wire within the housing at an interface of a first current collector and the first cathode; and
configuring the at least one thermal control wire to selectively increase a temperature within the housing and selectively decrease the temperature within the housing.

10. The method of claim 9 , wherein positioning at least one thermal control wire within the housing further comprises:
positioning the at least one thermal control wire within the first solid-state electrolyte layer.

11. The method of claim 10 , wherein positioning at least one thermal control wire within the housing comprises:
sintering a thermoelectric ceramic in a channel in the first solid-state electrolyte layer.

12. The method of claim 9 , wherein positioning the at least one thermal control wire within the housing comprises:
placing the at least one thermal control wire in electrical communication with the first anode and the first cathode.

13. The method of claim 12 , wherein placing the at least one thermal control wire in electrical communication with the first anode comprises:
placing the at least one thermal control wire in electrical communication with the first anode through a variable resistive load, and the method further comprises
configuring a battery management system to control the variable resistive load to modify a temperature in the first solid-state electrolyte layer.

14. The method of claim 13 , wherein configuring the battery management system comprises:
configuring the battery management system to identify a failure of the system; and
configuring the battery management system to control cooling of the first solid-state electrolyte layer using the at least one thermal control wire in response to the identified failure.

15. The method of claim 9 , wherein positioning the at least one thermal control wire comprises:
positioning the at least one thermal control wire at an interface of a second current collector and the first anode.

16. The method of claim 9 , wherein configuring the at least one thermal control wire to selectively increase the temperature within the housing and selectively decrease the temperature within the housing comprises:
configuring the at least one thermal control wire to selectively cool the second current collector; and
configuring the at least one thermal control wire to selectively heat the first solid-state electrolyte layer.

Assignees

• Bosch Gmbh Robert

Inventors

• Lohmann Timm
• Schumann Bernd
• Christensen John F

Classifications

• H01M50/497

  Ionic conductivity · CPC title

• H01M2/14

  Electricity · mapped topic

• H01M10/615

  Heating or keeping warm · CPC title

• H01M10/654 Primary

  located inside the innermost case of the cells, e.g. mandrels, electrodes or electrolytes · CPC title

• H01M10/637

  characterised by the use of reversible temperature-sensitive devices, e.g. NTC, PTC or bimetal devices; characterised by control of the internal current flowing through the cells, e.g. by switching (means for preventing undesired use or discharge H01M50/572) · CPC title