Housing part of a battery cell or for a battery cell and method for applying a rupture element to a housing part of a battery cell

US11056742B2 · kind B2 · utility

Assignee

• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Tobias Zeilinger · Palo Alto, US
• Ruediger DAUB · Gröbenzell, DE
• Nikolaos TSIOUVARAS · Munich, DE
• Juergen Herold · Weismain, DE
• Christian Singer · Le Cannet, FR

Key dates

• Filing date: Jan 7, 2019
• Grant date: Jul 6, 2021
• Expiry date: Apr 14, 2039

Classification

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

Abstract

A method for applying a rupture element to a housing part of a battery cell, more particularly to a housing part provided for sealing a battery cell, includes the following steps: providing the housing part, wherein the housing part has an inner side facing the interior of the battery cell and an outer side facing the exterior of the battery cell. A hole is provided in the housing part, through which in the event of a malfunction, in which pressure in the battery cell reaches an inadmissably high level, pressure can escape into the surrounding area. A plate-shaped rupture element is provided, which is at least slightly larger than the hole. The plate-shaped rupture element is applied to the hole from the outer side such that it fully covers the hole and an edge region of the plate-shaped rupture element is joined all around to an edge region of the housing part, which extends around the hole, such that the plate-shaped rupture element fluidically seals the hole.