Battery module
AssigneeSK On Co., Ltd.
InventorsHoemin Cheong, HyunJoon Park, Majid Abbasi Gharacheh, Wook Hyun Kim, Tae Hyun Kim
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Abstract
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.
Claims14
A battery module comprising:
- 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,
- the bonding region and the surface region have different microstructures and
- wherein the bonding region and the surface region have different microstructures due to different thermal histories.
Dependencies are inferred from the claim text.