Battery pack assembly having thermal transfer sheets
First Claim
Patent Images
1. A battery pack comprising:
- a plurality of cell assemblies in a stacked configuration, each cell assembly comprisingat least one prismatic battery;
a frame having a plurality of legs sized and configured to be positioned around the at least one prismatic battery, at least one leg including a rear face, curved outer edge and a side face, the frame including a forwardly extending hooked projection and rearwardly extending hooked receiver matching the hooked projection for latchingly engaging a hooked projection of an adjacent frame of another one of said plurality of cell assemblies; and
a thermal transfer sheet made from a sheet of flexible graphite, each said thermal transfer sheet being positioned to contact a major surface of the at least one prismatic battery and bent over in contact with the curved outer edge; and
a heat sink, at least a portion of each of said thermal transfer sheets being secured between said heat sink and said side faces of said frames of said plurality of cell assemblies.
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Abstract
A battery pack includes a plurality of cell assemblies each of which include one or more prismatic batteries. A frame has legs sized and configured to be positioned around the prismatic batteries. At least one leg includes a rear face, curved outer edge and a side face. A thermal transfer sheet is made from a sheet of a compressed mass of exfoliated graphite particles. Each thermal transfer sheet is positioned to contact the major surface of the at least one prismatic battery and is bent over the curved outer edge. At least a portion of each thermal transfer sheet is secured between a heat sink and the side face.
24 Citations
20 Claims
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1. A battery pack comprising:
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a plurality of cell assemblies in a stacked configuration, each cell assembly comprising at least one prismatic battery; a frame having a plurality of legs sized and configured to be positioned around the at least one prismatic battery, at least one leg including a rear face, curved outer edge and a side face, the frame including a forwardly extending hooked projection and rearwardly extending hooked receiver matching the hooked projection for latchingly engaging a hooked projection of an adjacent frame of another one of said plurality of cell assemblies; and a thermal transfer sheet made from a sheet of flexible graphite, each said thermal transfer sheet being positioned to contact a major surface of the at least one prismatic battery and bent over in contact with the curved outer edge; and a heat sink, at least a portion of each of said thermal transfer sheets being secured between said heat sink and said side faces of said frames of said plurality of cell assemblies. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A battery pack comprising:
a plurality of cell assemblies each comprising at least one prismatic battery having opposed major surfaces; a frame having a plurality of legs sized and configured to be positioned around the at least one prismatic battery; a fluid conduit extending along at least one of said plurality of legs, said conduit having an outer surface; and a thermal transfer sheet made from a sheet of flexible graphite and having opposed major surfaces, said thermal transfer sheet having a central portion and at least one tab extending from said central portion, one major surface of said central portion contacting at least one of said major surfaces of the at least one prismatic battery and the other of said major surface of said central portion being at least partially covered by said at least one tab folded over said fluid conduit outer surface. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
Specification