US 2021/0242531 A1Published application

Vehicle with a High-Voltage Accumulator

AssigneeBayerische Motoren Werke Aktiengesellschaft

InventorsJana BECK, Tobias SCHMIEG

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Abstract

A vehicle has a high-voltage accumulator which has a high-voltage accumulator housing. At least one accumulator cell is arranged in the high-voltage accumulator housing and has an emergency degassing opening that is closed in a gas-tight manner in a normal state of the accumulator cell and opens when a specified internal pressure in the interior of the accumulator cell is exceeded so that a hot or burning gas can leak out of the accumulator cell into the high-voltage accumulator housing. Granulate which expands when heated by incident hot or burning gas is provided in sub-regions of the high-voltage accumulator. The sub-regions are arranged in the region of the emergency degassing opening of the at least one accumulator cell.

Claims5

Dependent claims

A vehicle having:

a high-voltage accumulator (1), which comprises a high-voltage accumulator housing,
at least one storage cell (5) arranged in the high-voltage accumulator housing, incorporating an emergency degassing opening (6) which, in a normal state of the storage cell (5), is closed in a gas-tight manner and which, in the event of an overshoot of a predefined internal pressure in the interior of the storage cell (5), opens such that hot or burning gas (7) can escape from the storage cell (5) into the high-voltage accumulator housing,
characterized in that, in subregions of the high-voltage accumulator (1), which are arranged in the region of the emergency degassing opening (6) of the at least one storage cell (5), granulates (9) are provided which, in the event of heat-up associated with the application of hot or burning gas (7) thereto, undergo expansion.

Dependencies are inferred from the claim text.

Facts

Application: 17/053,964Filed 13 Jun 2019
Priority: DE 10 2018 211 316.59 Jul 2018
Published: 5 Aug 2021
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

H01M 10/4207
Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells: for several batteries or cells simultaneously or…
H01M 50/383
Arrangements for facilitating escape of gases: flame arresting or ignition-preventing means
A62C 2/065
Physical fire-barriers: having as the main closure device materials, whose characteristics undergo an irreversible change under high temperatures,…
A62C 3/07
Fire prevention, containment or extinguishing specially adapted for particular objects or places: in vehicles, e.g. in road vehicles

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