HEAT DISSIPATION FOR LARGE BATTERY PACKS
First Claim
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1. Apparatus, comprising:
- a battery pack comprising a plurality of similarly-shaped electrical cells aligned in a stack, each cell includinga flat housing including an edge,at least one electrode, andan electrically and thermally conductive tab coupled to the at least one electrode, the tab extending through the edge on a first side of the housing to conduct both current and a substantial amount of heat out of the housing;
an electrically and heat conductive collector panel includinga first surface electrically and thermally coupled to each of the tabs, anda second surface opposite the first surface; and
a thermal interface material that is electrically insulative and thermally conductive, the thermal interface material includinga first surface in thermal contact with the second surface of the collector panel, anda second surface for thermal contact with an external temperature control system.
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Abstract
One embodiment includes an electrical cell that includes a flat housing, at least one electrode and an electrically and heat conductive tab coupled to the electrode and extending through the housing for electrically and thermally coupling to a collector panel, the tab being capable of conducting both current and a substantial amount of heat out of the housing to a temperature control system. The cells may be stacked to form a battery having a temperature panel interfaced to the temperature control system by a thermal interface. The battery may propel an electrically-powered vehicle or the like.
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Citations
20 Claims
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1. Apparatus, comprising:
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a battery pack comprising a plurality of similarly-shaped electrical cells aligned in a stack, each cell including a flat housing including an edge, at least one electrode, and an electrically and thermally conductive tab coupled to the at least one electrode, the tab extending through the edge on a first side of the housing to conduct both current and a substantial amount of heat out of the housing; an electrically and heat conductive collector panel including a first surface electrically and thermally coupled to each of the tabs, and a second surface opposite the first surface; and a thermal interface material that is electrically insulative and thermally conductive, the thermal interface material including a first surface in thermal contact with the second surface of the collector panel, and a second surface for thermal contact with an external temperature control system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electrical cell, comprising:
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a flat housing having an edge; at least one electrode; and an electrically and heat conductive tab coupled to the electrode and extending through the edge of the housing for electrical and thermally coupling to a collector panel, the tab being capable of conducting both current and a substantial amount of heat out of the housing. - View Dependent Claims (12, 13, 14, 15, 16)
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17. An electric vehicle, comprising:
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an electric motor coupled to propel the electric vehicle; a battery pack coupled to power the electric motor, the battery pack comprising a stack of similarly-shaped electrical cells, each cell including a flat housing including an edge, at least one electrode, and an electrically and thermally conductive tab coupled to the at least one electrode, the tab extending through the edge on a first side of the housing to conduct both current and a substantial amount of heat out of the housing, an electrically and heat conductive collector panel including a first surface electrically and thermally coupled to each of the tabs, and a second surface opposite the first surface, and a thermal interface material that is electrically insulative and thermally conductive, the thermal interface material including a first surface in thermal contact with the second surface of the collector panel, and a second surface opposite the first surface, a temperature control panel that is part of a temperature control system, the temperature control panel coupled to the second surface of the thermal interface material, with the temperature control system to circulate fluid to cool the temperature control panel. - View Dependent Claims (18, 19, 20)
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Specification