Apparatus for increasing safety when using battery systems

Patent metadata

Field	Value
Publication number	US-10658637-B2
Application number	US-201415117202-A
Country	US
Kind code	B2
Filing date	Dec 30, 2014
Priority date	Feb 10, 2014
Publication date	May 19, 2020
Grant date	May 19, 2020

Abstract

A battery system includes at least one battery apparatus having at least one apparatus for increasing safety when using a degassing apparatus. The degassing apparatus is suitable for the controlled degassing of battery apparatuses. The battery apparatus and the apparatus are surrounded by a housing. The degassing apparatus is inserted into a wall of a housing. The apparatus generates a physical distance between the battery apparatus and the degassing apparatus such that a space is kept free between the battery apparatus and the degassing apparatus for discharging substances, which emerge from the battery apparatus, to an area surrounding the battery system.

First claim

The invention claimed is:

1. A battery system, comprising:
at least one battery apparatus, having at least one safety apparatus configured to increase safety when using a degassing apparatus,
wherein the degassing apparatus is configured to degas battery apparatuses in a controlled manner, and
wherein the battery apparatus and the safety apparatus are surrounded by a housing and the degassing apparatus is inserted into a wall of the housing,
wherein the safety apparatus produces a gap between the battery apparatus and the degassing apparatus such that a space is kept free between the battery apparatus and the degassing apparatus so as to dissipate substances that escape from the battery apparatus in an area surrounding the battery system,
wherein the safety apparatus is configured to generate a force effect on the degassing apparatus in dependence upon a state of the battery apparatus, and the effect of the force causes the degassing apparatus to open, and
wherein the safety apparatus includes a mechanical bursting element opener configured to generate the force effect on the degassing apparatus via action of the mechanical bursting element opener on the degassing apparatus.

2. The battery system as claimed in claim 1 , wherein the gap is between 0.001 m and 0.1 m.

3. The battery system as claimed in claim 2 , wherein the gap is between 0.005 m and 0.015 m.

4. The battery system as claimed in claim 1 , wherein:
the degassing apparatus is one of a bursting disk, a bursting membrane, a bursting valve, and an excess pressure valve;
the degassing apparatus is configured to be opened by one of an effect of a force and exerting a pressure; and
the degassing apparatus is configured to dissipate substances from the battery apparatus into the area surrounding the battery system.

5. The battery system as claimed in claim 4 , wherein the pressure is between 2 bar and 10 bar.

6. The battery system as claimed in claim 1 , wherein:
the at least one safety apparatus is configured to exert a pressure on the degassing apparatus in dependence upon a state of the battery apparatus; and
exerting the pressure opens the degassing apparatus.

7. The battery system as claimed in claim 6 , wherein the at least one safety apparatus is configured to exert a pressure on the degassing apparatus in dependence upon at least one of a physical change of the battery apparatus and a pressure that prevails within the interior of the battery apparatus.

8. The battery system as claimed in claim 6 , wherein the at least one safety apparatus is configured to exert a pressure of between 2 bar and 10 bar.

9. The battery system as claimed in claim 1 , wherein the at least one safety apparatus defines at least one opening for substances that escape from the battery apparatus to pass therethrough.

10. The battery system as claimed in claim 1 , wherein the at least one safety apparatus is electrically insulated.

11. The battery system as claimed in claim 1 , wherein the battery system is suitable for use in a vehicle.

12. The battery system as claimed in claim 11 , wherein the vehicle is a motor vehicle.

13. The battery system as claimed in claim 1 , wherein the at least one safety apparatus is configured to generate a force effect on the degassing apparatus in dependence upon at least one of a physical change of the battery apparatus and a pressure that prevails within an interior of the battery apparatus.

14. The battery system as claimed in claim 1 , wherein the action of the mechanical bursting element opener on the degassing apparatus causes the degassing apparatus to be reversibly opened.

15. The battery system as claimed in claim 1 , wherein the action of the mechanical bursting element opener on the degassing apparatus causes the degassing apparatus to be irreversibly opened.

16. The battery system as claimed in claim 1 , wherein the degassing apparatus includes an opening apparatus configured to permit dissipation of the substances therethrough upon the action of the mechanical bursting element opener.

17. The battery system as claimed in claim 16 , wherein the opening apparatus is one or more of pressed, bent, and broken via the action of the mechanical bursting element opener thereon.

Assignees

• Bosch Gmbh Robert

Inventors

• Zielke Christian
• Riefler Michael

Classifications

• H01M10/0525

  Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries · CPC title

• Y02B10/30

  Wind power · CPC title

• H01M2220/20

  Batteries in motive systems, e.g. vehicle, ship, plane · CPC title

• H01M2/12

  Electricity · mapped topic

• H01M2/1223 Primary

  Electricity · mapped topic