Patent ID: 11870093
Assignee: BAYERISCHE MOTOREN WERKE AKTIENGESELLSCHAFT
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 0:
1. A vehicle having a high-voltage battery, comprising:
a housing; and
at least one battery cell arranged in the housing, wherein
the at least one battery cell has a battery cell housing with an emergency ventilation opening which opens at a predefined internal cell pressure and through which gas is able to escape from an interior of the battery cell housing into the housing of the high-voltage battery in an event of at least one of a fault with or damage to the battery cell,
the emergency ventilation opening faces a wall of the housing against which the gas flows in the event of the at least one of the fault with or the damage to the battery cell,
the wall of the housing of the high-voltage battery is locally more thermally resistant in a region in which the emergency ventilation opening is arranged and the gas flows out of the battery cell housing in the event of the at least one of the fault with or the damage to the battery cell than in regions of the wall that are at a distance therefrom,
the wall is coated with an intumescent layer only in the region in which the emergency ventilation opening is arranged and the gas flows out of the battery cell housing in the event of the at least one of the fault with or the damage to the battery cell,
the wall has at least one thermally resistant layer that contains at least one of:
layered silicates or mica,
mineral fibers or glass fibers, or
ceramic,

the at least one thermally resistant layer is arranged only in the region in which the emergency ventilation opening is arranged and the gas flows out of the battery cell housing in the event of the at least one of the fault with or the damage to the battery cell, such that the gas impinges directly on the at least one thermally resistant layer, and
the at least one thermally resistant layer is partly or fully injection-molded and/or encapsulated with material of which the wall is made.