BONDED MULTI-LAYER GRAPHITE HEAT PIPE

摘要

A passive heat pipe structure used in a wearable device includes a multilayer stack of graphite sheets, each sheet having a plane high thermal conductivity oriented along a first axis and a plane of lower thermal conductivity along a second axis different from the first axis. The stack has a three-dimensional shape including a length and a width where the length is longer than the width and the first axis aligns parallel to said length, the multilayer stack having a height less than the width. A plurality of bonding layers interspersed between each sheet of the multilayer stack, each bonding layer thermally coupling each sheet to a respective adjacent sheet. The bonding layers may comprise metal layers or adhesive layers.

主权项

1. An apparatus comprising:
a multilayer stack of graphite sheets, each sheet having a plane high thermal conductivity oriented along a first axis and a plane of lower thermal conductivity along a second axis different from the first axis, the stack having a three-dimensional shape including a length and a width where the length is longer than the width and the first axis aligns parallel to said length, the multilayer stack having a height less than the width; and a plurality of bonding layers interspersed between each sheet of the multilayer stack, each bonding layer thermally coupling each sheet to a respective adjacent sheet.