초록 ▼

A cooling apparatus communicates through a communicating pipe with an inside space of an airtight casing in which a plurality of battery cells are hermetically held. The cooling apparatus and the inside space of the airtight casing are filled with high boiling point coolant. The coolant absorbs heat

A cooling apparatus communicates through a communicating pipe with an inside space of an airtight casing in which a plurality of battery cells are hermetically held. The cooling apparatus and the inside space of the airtight casing are filled with high boiling point coolant. The coolant absorbs heat developed by the plurality of battery cells in the airtight casing so that it evaporates. The evaporated (gaseous) coolant rises toward the cooling apparatus and is condensed in the cooling apparatus. Then the condensed (liquid) coolant returns to around the battery cells by its self-weight. Accordingly, the battery cells are uniformly and efficiently cooled not to have variation in temperature therein.

대표청구항 ▼

[ What is claimed is:] [1.] A battery cooling system comprising:a battery cell for producing electrical energy;an airtight casing holding the battery cell in an inside space thereof, the inside space being filled with coolant; anda cooling apparatus communicating with the inside space of the airtigh

[ What is claimed is:] [1.] A battery cooling system comprising:a battery cell for producing electrical energy;an airtight casing holding the battery cell in an inside space thereof, the inside space being filled with coolant; anda cooling apparatus communicating with the inside space of the airtight casing, the cooling apparatus being filled with the coolant,wherein the coolant contacts the entire surface of the battery cell in the inside space of the airtight casing and absorbs heat developed by the battery cell in the inside space of the airtight casing to evaporate; andwherein the evaporated coolant moves into the cooling apparatus, and is condensed by the cooling apparatus.