Battery case and battery module
AssigneeContemporary Amperex Technology Co., Limited
InventorsLiwen Jiang, Tingting Zhu
Life of this patent
Estimating the term…
Abstract
The present application provides a battery case and a battery module. The battery case includes a bottom plate; and a plurality of circumferentially spaced extensions formed by extending horizontally outward along the bottom plate, and each extension is bended at least once to form a case side arm, and a cavity of the battery case is enclosed by the case side arms and the bottom plate, and end faces for connection of the case side arms are bended to form connecting portions, and two adjacent connecting portions are snap-fitted to fix the adjacent case side arms to each other.
Claims15
A battery case comprising:
- a bottom plate;
- and
- a plurality of extensions circumferentially spaced, the plurality of extensions being formed by extending horizontally outward along the bottom plate,
- wherein each of the plurality of extensions is bent at least once to form a case side arm and a cavity of the battery case is enclosed by the case side arms and the bottom plate, and
- wherein end faces for connection of the case side arms are bent to form connecting portions, and two adjacent connecting portions are snap-fitted to fix the adjacent case side arms to each other;
- wherein:
- the connecting portions comprise first connecting portions and second connecting portions;
- the case side arms comprise:
- at least two end plates, end faces for connection of the at least two end plates being bent to form the first connecting portions;
- and
- at least two side plates, an end plate being arranged between the adjacent side plates, end faces for connection of the at least two side plates being bent to form the second connecting portions;
- adjacent first connecting portion and second connecting portion are snap-fitted together;
- and
- the end faces, facing away from the bottom plate, of the side plates extend outward to form pressing members, and the pressing members are located inside the cavity of the battery case.
A battery module comprising:
- a plurality of battery cells stacked together and a battery case;
- wherein the plurality of battery cells stacked together are accommodated inside a cavity of the battery case and are clamped between pressing members and the bottom plate;
- the battery case comprising:
- a bottom plate;
- and
- a plurality of extensions circumferentially spaced, the plurality of extensions being formed by extending horizontally outward along the bottom plate,
- wherein each of the plurality of extensions is bent at least once to form a case side arm and the cavity of the battery case is enclosed by the case side arms and the bottom plate, and
- wherein end faces for connection of the case side arms are bent to form connecting portions, and two adjacent connecting portions are snap-fitted to fix the adjacent case side arms to each other.
A vehicle comprising:
- a battery module, wherein the battery module comprises a plurality of battery cells stacked together and a battery case,
- wherein the plurality of battery cells stacked together are accommodated inside a cavity of the battery case and are clamped between pressing members and the bottom plate,
- the battery case comprising:
- a bottom plate;
- and
- a plurality of extensions circumferentially spaced, the plurality of extensions being formed by extending horizontally outward along the bottom plate,
- wherein each of the plurality of extensions is bent at least once to form a case side arm and the cavity of the battery case is enclosed by the case side arms and the bottom plate, and
- wherein end faces for connection of the case side arms are bent to form connecting portions, and two adjacent connecting portions are snap-fitted to fix the adjacent case side arms to each other.
Dependencies are inferred from the claim text.