轻量化铝合金型材底板和水冷板电池包下箱体关键生产制造流程与工艺研究

打开文本图片集

中图分类号：U466 文献标志码：B DOI：10.19710/J.cnki.1003-8817.20250062

Abstract：To meet the requirements for dimensional accuracy and sealing performance of the lower case of battery packs inpure electricvehicles，thisstudy investigates theproduction proceses and technologiesforthelower caseof batterypacks featuring lightweight aluminum ally profile botom plates and water-cooled plates.For the case with a profile botom plate，processes such as frictionstir welding，integrated CNC machining，welding offrames and bottomplates，overall assemblymachining，andairtightness testing areelaborated;forthecase witha water-cooled plate，technologies including brazingof water-coled platesand weldingofframeassembliesareanalyzed．By optimizing welding heat inputand adopting integrated machining andautomation technologies，thequalified rateof product dimensions has been increased to 98.3% ，thesealing failureratehasbeenreduced to 4.4% ，andtheoverall production cycle time has been improved by 13%

Keywords：Lightweight，Batterypackboxbody，Theproductionprocess

1前言

铝合金是一种广泛应用于汽车领域的轻质材料，其密度只有钢的1/3，相比于传统钢材具有质量轻、可塑性好、比强度高、耐腐蚀、导热和散热性好、易回收利用等优点。（剩余4431字）