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US 2026/0051590 A1Published application
Battery case for electric vehicle, and method for manufacturing same
AssigneeKabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
InventorHideki ISHITOBI
Life of this patent
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Abstract
A method for manufacturing a battery case for electric vehicle includes: preparing a frame, and a blank material formed in a flat plate shape; disposing the frame and the blank material to stack the blank material on the frame; and pressurizing the blank material to press the blank material against the frame, so as to mold the blank material into a bathtub shape and joining the blank material to the frame by press-fitting.
Claims7
A battery case for electric vehicle comprising:
- a frame;
- and
- a tray having a bathtub shape, disposed inside the frame, and joined to the frame by press-fitting,
- wherein
- in joining of the tray to the frame by press-fitting, the tray includes a negative angle portion where a negative angle is formed at least partially inward from a bottom of the tray toward an opening of the tray,
- the tray is formed of metal, and
- an inner surface of the frame includes a negative angle portion that is integrally formed with the negative angle portion of the tray.
4 more elements
Dependencies are inferred from the claim text.