US 12,319,987 B2
Battery box bottom part for electric vehicles
Peter Jessner, Bourgoin-Jallieu (FR); Jocelyne List, Saint Egreve (FR); and Estelle Muller, Grenoble (FR)
Assigned to CONSTELLIUM NEUF-BRISACH, Biesheim (FR)
Appl. No. 17/439,912
Filed by CONSTELLIUM NEUF-BRISACH, Biesheim (FR)
PCT Filed Mar. 17, 2020, PCT No. PCT/EP2020/057348
§ 371(c)(1), (2) Date Sep. 16, 2021,
PCT Pub. No. WO2020/187942, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 1902816 (FR), filed on Mar. 19, 2019.
Prior Publication US 2022/0181735 A1, Jun. 9, 2022
Int. Cl. H01M 50/249 (2021.01); B60K 1/04 (2019.01); C22C 21/06 (2006.01); C22F 1/047 (2006.01); H01M 50/102 (2021.01); H01M 50/145 (2021.01); H01M 50/224 (2021.01); H01M 50/233 (2021.01); H01M 50/24 (2021.01)
CPC C22C 21/06 (2013.01) [B60K 1/04 (2013.01); C22F 1/047 (2013.01); H01M 50/102 (2021.01); H01M 50/145 (2021.01); H01M 50/224 (2021.01); H01M 50/233 (2021.01); H01M 50/24 (2021.01); H01M 50/249 (2021.01); H01M 2220/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A bottom part of battery box for electric or hybrid motor vehicles made from an aluminium alloy sheet having a thickness between 2 and 6 mm, wherein said aluminum alloy comprises 2.5 to 4.0 wt. % of Mg, 0.1 to 0.8 wt. % of Mn, 0.4 wt. % or less of Si, 0.5 wt. % or less of Fe, 0.5 wt. % or less of Cu, 0.1 wt. % or less of Cr, 0.1 wt. % or less of Zn, 0.1 wt. % or less of Ti, rest aluminium and impurities up to 0.05 wt. % each and 0.15 wt. % total, wherein the sheet is in an H2X temper, strain-hardened and partially annealed.