This　study　proposes　a　new　mixed-cooling　micro　heat　pipe　array-proton　exchange　membrane　fuel　cell　(MHPAPEMFC)　stack　by　developing　and　assembling　three　different　shapes　and　new　structures　of　MHPA.　This　concept　effectively　solves　heat　dissipation　under　high-temperature　conditions　and　during　preheating　in　a　low-　temperature　environment　of　the　PEMFC　field　without　increasing　the　fan　configuration　and　parasitic　power　of　the　stack.　The　performance　of　the　three　MHPAs　is　experimentally　tested.　Results　show　that　the　three　types　of　MHPAs　fully　satisfy　the　thermal　management　requirements　of　PEMFC　stacks.　The　double-rectangle　MHPA　exhibits　the　minimum　thermal　resistance　of　0.18　degrees　C/W,　and　the　rectangle　MHPA　exhibits　the　minimum　dynamic　thermal　response　time　of　100　s.　The　heat　transfer　characteristics　of　MHPAs　can　be　enhanced　by　attaching　fins,　reducing　ambient　air　temperature,　and　increasing　cooling　air　velocity.　The　temperature　difference　of　the　MHPA　can　decrease　by　17.7　%　with　fins.　The　thermal　performance　of　MHPAs　at　high　ambient　temperature　is　worse　than　that　at　low　ambient　temperature.　As　the　cooling　air　velocity　increases,　the　thermal　resistance　of　the　rectangle　MHPA,　parallelogram　MHPA,　and　double-rectangle　MHPA　decreases　to　140　%,　117　%　and　117　%,　respectively.