Cylinder housing, cylinder battery and battery module

Abstract

A cylinder housing characterized in that the cylinder housing is an aluminum metal housing or an aluminum alloy housing comprising an end plate and a side plate, wherein the end plate is a circular end plate, wherein the side plate is provided in a circumferential direction of the end plate and extends in an axial direction of the cylinder housing; wherein a transition section is provided between the end plate and the side plate, the transition section comprising an arc-shaped segment; wherein a ratio of a dimension of the transition section in the axial direction of the cylinder housing to a dimension of the transition section in a radial direction of the end plate is L; wherein a radius of the arc-shaped segment is R, wherein a Brinell hardness of the housing is H; wherein a relationship between R, H and L 0 ≤ H*|L-1| / R ≤ 28 satisfies; wherein the unit of R is mm, the unit of H is HB and the range of L is 0.6 to 1.4.

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