Battery pack assembly

摘要

A battery pack includes a plurality of prismatic format batteries in a stacked configuration. Flexible graphite sheet heat spreaders are interposed between adjacent prismatic batteries in the stack. A heat sink extends the length of the stack of prismatic format batteries. But heat spreader major surfaces contact the heat sink and extend into the heat sink by at least 30 percent of the thru-thickness of the heat sink.

主权项

1. A battery pack comprising:
a plurality of prismatic format batteries in a stacked configuration; a plurality of heat spreaders made from a flexible graphite sheet, each said heat spreader being interposed between adjacent of said prismatic format batteries in said stack, each said heat spreader having opposed major surfaces; and a heat sink extending along the length of the stacked plurality of prismatic format batteries, wherein said heat sink includes a plurality of plate sections and at least one mounting bar, said plate sections being carried on said at least one mounting bar and said heat sink includes a thru-thickness in a direction parallel to said major surfaces of said plurality of heat spreaders, wherein both said heat spreader major surfaces contact said heat sink and said heat spreader extends into said heat sink at least 30 percent of said thru-thickness of said heat sink.