Venting device for an electrochemical battery and battery with a venting device

US9508972B2 · kind B2 · utility

Assignees

• Johnson Controls Technology Company · US
• Johnson Controls Autobatterie GmbH & Co. KGaA · DE

Inventors

• Ingo Koch · Hameln, DE
• Peter Streuer · Hannover, DE
• Armin Staffeldt · Lauenbrück, DE
• Doreen Lucht · Franklin, US
• Jerome R. Heiman · Campbellsport, US
• Donald J. Caldwell · Milwaukee, US
• Dirk Bremer · Neustadt, DE

Key dates

• Filing date: Mar 2, 2012
• Grant date: Nov 29, 2016
• Expiry date: Oct 9, 2032

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/10
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

The invention relates to a venting device (1) for an electrochemical battery (90). The venting device comprises at least one inlet opening (2) for receiving gases venting from the battery (90), at least one outlet opening (3) for venting the gases received from the battery (90), and at least one flame arrester element (4). The inlet opening (2) is in communication with the outlet opening (3) via the flame arrester element (4). An explosion chamber (5, 6) is located within the venting device (1) on the side of the flame arrester element (4) which is directed to the outlet opening (3). The explosion chamber (5, 6) is arranged for developing and temporarily storing an explosive mixture of the gases received from the battery (90) and oxygen from the ambient air, which explodes in case a flame occurs within the explosion chamber (5, 6), thereby blowing off the flame.