Battery module passive thermal management features and positioning
First Claim
1. A Lithium-ion (Li-ion) battery system, comprising:
- a battery module, comprising;
a plurality of Li-ion electrochemical cells;
a housing that houses the plurality of Li-ion electrochemical cells, wherein the housing comprises a first side and a second side opposite to the first side;
a heat sink coupled with the second side of the housing; and
a thermal interface disposed between, and in contact with, the heat sink and the plurality of Li-ion electrochemical cells, wherein the thermal interface physically contacts base ends of the plurality of Li-ion electrochemical cells opposite to terminal ends of the plurality of Li-ion electrochemical cells comprising terminals; and
a cage disposed about the housing, the cage having a cage side positioned next to the second side of the housing of the battery module and having a plurality of openings disposed in a portion of the cage side, wherein the plurality of openings enable air to be drawn through the plurality of openings from an area external to the cage such that the air enters into the cage and passes over the heat sink of the battery module along a path extending from a first end of the heat sink to a second end of the heat sink, and wherein the cage side of the cage, the second side of the housing, and the portion of the cage side are relatively positioned with respect to each other such that the air is drawn through the plurality of openings and along the path via a chimney effect.
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Accused Products
Abstract
The present disclosure includes a battery system with a battery module having electrochemical cells inside of a housing. The housing includes a first side and a second side opposite to the first side. The battery module includes a heat sink coupled with the second side of the housing and a thermal interface disposed between, and in contact with, the heat sink and the electrochemical cells. The thermal interface contacts base ends of the electrochemical cells. The system includes a cage disposed about the battery module. The cage includes a cage side positioned next to the second side of the housing and having openings disposed in the cage side. The openings enable air to be drawn into the cage. The air passes over the heat sink of the battery module.
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Citations
23 Claims
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1. A Lithium-ion (Li-ion) battery system, comprising:
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a battery module, comprising; a plurality of Li-ion electrochemical cells; a housing that houses the plurality of Li-ion electrochemical cells, wherein the housing comprises a first side and a second side opposite to the first side; a heat sink coupled with the second side of the housing; and a thermal interface disposed between, and in contact with, the heat sink and the plurality of Li-ion electrochemical cells, wherein the thermal interface physically contacts base ends of the plurality of Li-ion electrochemical cells opposite to terminal ends of the plurality of Li-ion electrochemical cells comprising terminals; and a cage disposed about the housing, the cage having a cage side positioned next to the second side of the housing of the battery module and having a plurality of openings disposed in a portion of the cage side, wherein the plurality of openings enable air to be drawn through the plurality of openings from an area external to the cage such that the air enters into the cage and passes over the heat sink of the battery module along a path extending from a first end of the heat sink to a second end of the heat sink, and wherein the cage side of the cage, the second side of the housing, and the portion of the cage side are relatively positioned with respect to each other such that the air is drawn through the plurality of openings and along the path via a chimney effect. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A battery system, comprising:
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a battery module having a housing configured to house electrochemical cells therein, wherein the battery module comprises a heat sink coupled to a first side of the housing, wherein base ends of the electrochemical cells are disposed proximate to the first side of the housing; and a cage configured to receive the battery module, wherein the cage comprises; a cage side configured to be aligned with the first side of the housing of the battery module and having a plurality of openings disposed in a lower portion of the cage side and configured to enable a chimney effect across the plurality of openings, wherein the plurality of openings extends through the cage side in a first direction, wherein the plurality of openings enables air to be drawn, via the chimney effect, through the plurality of openings from an area external to the cage such that the air enters into the cage through the lower portion of the cage side and passes over the heat sink of the battery module along a path extending in a second direction from a first end of the heat sink to a second end of the heat sink, and wherein the first direction is transverse to the second direction. - View Dependent Claims (15, 16, 17, 18)
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19. A battery system, comprising:
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a battery module; a housing of the battery module that houses a plurality of electrochemical cells in two stacks of electrochemical cells, wherein the housing comprises a first side and a second side opposite to the first side, and wherein the second side comprises two cutouts, each cutout being aligned with a respective one of the two stacks of electrochemical cells; two heat sinks of the battery module disposed in the two cutouts and aligned with the two stacks of electrochemical cells; two thermal interfaces of the battery module, each thermal interface being disposed between, and in contact with, a respective one of the two heat sinks and a respective one of the two stacks of electrochemical cells, wherein the two thermal interfaces physically contact base ends of the plurality of electrochemical cells opposite to terminal ends of the plurality of electrochemical cells comprising terminals; and a cage disposed about the battery module, wherein the cage comprises; a cage side aligned with the second side of the housing of the battery module and having a plurality of openings disposed in a lower portion of the cage side, wherein the plurality of openings enables air to be drawn through the plurality of openings via a chimney effect from an external area such that the air enters into the cage proximate the lower portion of the cage side and passes over the two heat sinks of the battery module along a path extending from first ends of the two heat sinks to second ends of the two heat sinks. - View Dependent Claims (20, 21, 22, 23)
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Specification