Battery cooling system
First Claim
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; and
a 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; and
wherein the evaporated coolant moves into the cooling apparatus, and is condensed by the cooling apparatus.
1 Assignment
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Accused Products
Abstract
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.
104 Citations
35 Claims
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1. A battery cooling system comprising:
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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; and a 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; and wherein the evaporated coolant moves into the cooling apparatus, and is condensed by the cooling apparatus. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A battery cooling system comprising:
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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; and a cooling apparatus communicating with the inside space of the airtight casing, the cooling apparatus being filled with the coolant, wherein the coolant absorbs heat developed by the battery cell in the inside space of the airtight casing to evaporate; wherein the evaporated coolant moves into the cooling apparatus, and is condensed by the cooling apparatus; and wherein the cooling apparatus is disposed on an upper side of the battery cell in a vertical direction inside of the airtight casing. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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22. A battery cooling system comprising:
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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; and a cooling apparatus communicating with the inside space of the airtight casing, the cooling apparatus being filled with the coolant, wherein the coolant absorbs heat developed by the battery cell in the inside space of airtight casing to evaporate; wherein the evaporated coolant moves into the cooling apparatus, and is condensed by the cooling apparatus; and wherein the airtight casing is composed of a casing body with an opening that holds the battery cell, and a casing cover that hermetically covers the opening of the casing body and serves as the cooling apparatus. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29, 34)
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30. A battery cooling system comprising:
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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; and a cooling apparatus communicating with the inside space of the airtight casing, the cooling apparatus being filled with the coolant, wherein the coolant absorbs heat developed by the battery cell in the inside space of airtight casing to evaporate; wherein the evaporated coolant moves into the cooling apparatus, and is condensed by the cooling apparatus; the battery cell includes a plurality of battery cells electrically connected with one another and arranged in parallel with one another in a longitudinal direction thereof in the airtight casing; each of the plurality of battery cells has a positive side terminal and a negative side terminal provided on both ends in the longitudinal direction thereof; and the positive side terminal of one of the plurality of battery cells is connected to the negative side terminal of an adjacent one of the plurality of battery cells wherein; the airtight casing has a support base disposed in a lower portion of the airtight casing to divide the inside space into a main inside space and a lower inside space, both spaces being filled with the coolant; the plurality of battery cells are disposed on the support base in the main inside space; and a wire connecting the positive side terminal of the one of the plurality of battery cells and the negative side terminal of the adjacent one of the plurality of battery cells is disposed within the lower inside space.
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31. A battery cooling system comprising:
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a battery cell for producing electrical energy; an airtight casing holding the battery cell in an inside space thereof, the airtight casing being disposed with a longitudinal direction thereof approximately parallel to a horizontal direction, the inside space of the airtight casing being filled with coolant; and a cooling apparatus disposed on an upper wall of the airtight casing for cooling the upper wall of the airtight casing, wherein the coolant in the inside space of the airtight casing contacts the entire surface of the battery cell in the inside space of the airtight casing and absorbs heat around the battery cell to change into gaseous coolant; wherein the gaseous coolant rises to contact the upper wall of the airtight casing in the inside space and is condensed; and wherein the condensed coolant returns to a position around the battery cell. - View Dependent Claims (32)
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33. A battery cooling system comprising:
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a battery cell for producing an electrical energy; an airtight casing holding the battery cell in an inside space thereof filled with liquid coolant, the liquid coolant contacting the battery cell to absorb heat developed by the battery cell so that the liquid coolant changes into gaseous coolant by the heat; and a cooling apparatus disposed on an upper side of the battery cell in a vertical direction, for changing the gaseous coolant into the liquid coolant by heat exchange; wherein the cooling apparatus has a cooling pipe in which fluid flows. - View Dependent Claims (35)
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Specification