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公开(公告)号：EP4184677A1
公开(公告)日：2023-05-24
申请号：EP22205877.8
申请日：2022-11-07
IPC分类号： H01M50/207 , B23K1/005 , B23K20/233 , B23K26/00 , B23K26/351 , C22C21/02 , H01M50/224
摘要： Provided is a battery module including a housing having an internal accommodating space and a plurality of battery cells located in the internal accommodating space, wherein the housing includes a welding joint portion in which a first base material of a first alloy and a second base material of a second alloy are welded, the welding joint portion includes a bonding region in which the first base material and the second base material are melt-bonded and a surface region covering the bonding region, and the bonding region and the surface region have different microstructures.
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公开(公告)号：EP4180168A1
公开(公告)日：2023-05-17
申请号：EP22205876.0
申请日：2022-11-07
IPC分类号： B23K26/26 , B23K26/32 , B23K26/354 , B23K31/12 , B23K26/24 , H01M50/169 , B23K103/10
摘要： Provided is a method of manufacturing a battery module including a) aligning a first base material and a second base material, which are welding objects and housing members that are combined with each other to form an internal accommodating space in which a plurality of battery cells are accommodated and b) forming a welding joint portion including a bonding region and a surface region covering the bonding region by irradiating a contact surface between the first base material and the second base material with a laser, the bonding region and the surface region forming the welding joint portion having different microstructures due to different thermal history.
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公开(公告)号：EP4033592A1
公开(公告)日：2022-07-27
申请号：EP22153328.4
申请日：2022-01-25
发明人： CHEONG, Hoe Min , KIM, Ho Yeon , CHUNG, Gyu Jin
IPC分类号： H01M50/169 , H01M50/209 , H01M50/211 , H01M50/222 , H01M50/242 , H01M50/276
摘要： The present invention relates to a battery module. The battery module according to the present invention includes a housing having an internal accommodation space; and a plurality of battery cells disposed in the internal accommodation space, in which the housing includes a weld joint in which a first base material of a first aluminum-based alloy and a second base material of a second aluminum-based alloy are welded, and at least a partial region of a bead surface of the weld joint is located inward with respect to a reference plane, with an imaginary plane, which connects an outer surface of the first base material and an outer surface of the second base material in contact with the weld joint, as the reference plane.
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