The　traditional　bottom　liquid-cooling　thermal　management　system　(TMS)　has　poor　cooling　performance　and　is　prone　to　causing　significant　temperature　difference　in　the　lithium-ion　battery　(LIB)　module.　In　order　to　solve　the　above　problems,　this　study　takes　the　Z-shaped　micro　heat　pipe　array　(MHPA)　as　the　core　heat　transfer　element　and　establishes　a　top　liquid-cooling　(TLC)　TMS　based　on　Z-shaped　MHPA.　The　thermal　management　performance　of　the　TLC　TMS　based　on　Z-shaped　MHPA　is　analyzed　by　comparing　it　with　the　traditional　bottom　liquid-cooling　TMS.　Results　show　that　under　the　conditions　of　40　&　DEG;C　ambient　temperature　and　25　&　DEG;C　cold　water　inlet　tem-perature,　the　bottom　liquid-cooling　TMS　can　no　longer　meet　the　thermal　management　requirements　of　the　module　at　a　2C　charge-discharge　rate.　In　comparison,　the　TLC　TMS　based　on　Z-shaped　MHPA　can　ensure　the　module＇s　maximum　temperature　below　55　&　DEG;C,　and　the　battery　and　module　level＇s　temperature　difference　can　be　controlled　below　4　&　DEG;C　under　3C　charge-discharge　rate.　The　TLC　TMS　based　on　Z-shaped　MHPA　can　not　only　effectively　delay　the　battery＇s　temperature　rise　under　high　charge-discharge　rate,　but　also　significantly　reduce　the　temperature　difference;　its　thermal　management　performance　is　significantly　better　than　the　bottom　liquid-cooling　TMS.