Importance

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Abstract

A battery device (100) is provided. The battery device comprises a battery cell pack (105) including a plurality of battery cells, and a tube (101) disposed on the battery cell pack along a winding path such that each battery cell (118) of the plurality of battery cells is arranged adjacent to a portion of the tube. The tube includes a cooling and/or fire extinguishing medium (150). The battery device comprises a housing (102), in which the battery cell pack and the tube are arranged. For each battery cell, a respective portion (101a) of the tube arranged adjacent to the battery cell comprises a material configured to rupture upon exposure to heat and/or a flame produced by thermal runaway of the battery cell. The tube may comprise a flexible and/or stretchable material and it may be pressurized by being filled with the cooling and/or fire extinguishing medium such that the flexible and/or stretchable material stretches.

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First Claim