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US 10,770,764 B2Granted
Battery pack
AssigneeToyota Jidosha Kabushiki Kaisha
InventorAki Yamashita
Life of this patent
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Abstract
A battery pack includes a plurality of batteries that include heat dissipation surfaces, a cooler that cools each of the plurality of the batteries through each of the heat dissipation surfaces, and a viscous layer that is interposed between each of the heat dissipation surfaces and the cooler. The viscous layer contains a filler having a negative thermal expansion coefficient.
Claims8
A battery pack comprising:
- a plurality of batteries that include heat dissipation surfaces respectively;
- a cooler that cools each of the plurality of the batteries through each of the heat dissipation surfaces;
- and
- a viscous layer that is interposed between each of the heat dissipation surfaces and the cooler, the viscous layer containing a filler having a negative thermal expansion coefficient,
- wherein a ratio of a mass of the filler to a mass of all constituents in the viscous layer other than the filler is equal to or larger than 0.4 wt % and is equal to or smaller than 1.25 wt %.
2 more elements
Dependencies are inferred from the claim text.