EV Battery Deep Drawing: Copper Shield Cans
新能源电池壳深冲：铜基屏蔽罩
标签：新能源, 电池壳, 屏蔽罩, 深冲, EMI, 量产
新能源汽车 EMI 屏蔽罩与母排连接壳大量使用 T2 紫铜深冲件。典型工艺：0.5 mm 紫铜板，拉深比 1.8–2.0，两次拉深 + 一次整形单边间隙 1.05–1.1 t；凹模圆角 R4–R5，凸模圆角 R2–R3。压边力按 0.3–0.35 MPa 施加并用氮气弹簧补偿，可将口部高度差控制在 0.15 mm 内。铜材导热快，润滑宜用极压型拉伸油保证膜厚。
EV EMI shield cans and busbar housings are deep-drawn in T2 copper. Typical setup: 0.5 mm copper, draw ratio 1.8–2.0, two draws plus one restrike at 1.05–1.1t clearance; die radius R4–R5, punch radius R2–R3. Apply blank-holder pressure of 0.3–0.35 MPa with nitrogen-spring compensation to hold rim height within 0.15 mm. Copper's high conductivity demands EP drawing oil for film retention. ---