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CN107475570B 成形性、散热性和焊接性优良的电池壳体用铝合金板 失效 - 权利终止

成形性、散热性和焊接性优良的电池壳体用铝合金板
摘要：
本发明提供一种具有能应用于大型锂离子电池容器的散热特性，且成形性优、形状冻结性优良，激光焊接性也优良的3000系铝合金板。该铝合金板是一种具有以下成分组成、呈现出导电率超过45％IACS、0.2％屈服强度为40～低于60MPa、20％以上的伸长率的值的冷轧退火材料；所述成分组成为具有0.05～0.29质量％的Fe，0.6～1.5质量％的Mn，0.05～0.6质量％的Si，进一步含有0.001～0.5质量％的Co、0.005～0.05质量％的Nb、0.005～0.05质量％的V中的一种或两种以上，剩余部分由Al和不可避免的杂质构成，作为不可避免的杂质的Cu低于0.35质量％，Mg低于0.05质量％。或者是一种呈现出导电率超过45％IACS、0.2％屈服强度为60～低于150MPa、3％以上的伸长率的值的冷轧材料。
摘要（英）：

A 3000 series aluminum alloy sheet which has a heat dissipation characteristic which can be applied to a large-size lithium ion battery container and further which is excellent in formability and shape freezability and furthermore is also excellent in laser weldability is provided. An aluminum alloy sheet which comprises a cold rolled, annealed material which contains Fe: 0.05 to less than 0.3 mass%, Mn: 0.6 to 1.5 mass%, and Si: 0.05 to 0.6 mass%, has a balance of Al and impurities, and has, as impurities, Cu: less than 0.35 mass% and Mg: less than 0.05 mass%, has a conductivity which exceeds 45% IACS, has a 0.2% proof strength of 40 to less than 60 MPa, and displays a 20% or more value of elongation. Further, an aluminum alloy sheet which comprises an as-cold-rolled material which has a conductivity exceeding 45% IACS, a 0.2% proof strength of 60 to less than 150 MPa, and displays 3% or more value of elongation. Still further, to raise the conductivity, one or more of Co: 0.001 to 0.5 mass%, Nb: 0.005 to 0.05 mass%, and V: 0.005 to 0.05 mass% may be included.

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