Battery module and manufacturing method of battery module
AssigneeHonda Motor Co., Ltd.
InventorAtsushi SAKURAI
Life of this patent
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Abstract
The battery module includes a plurality of battery cells arranged therein. The battery cells are housed in an enclosing member, which is open on upper and lower sides, to be surrounded by the enclosing member. The battery cell stores an electrode body formed by winding a collector foil inside a cell case, which has long side walls and short side walls. The battery cell has a space between a corner where the long side wall and the short side wall intersect each other and the electrode body. The cell case has a recess partially depressed toward the space at the corner. A resin molded part molded of a resin is provided between the battery cells and the enclosing member and between the adjacent battery cells. The resin of the resin molded part enters the recess.
Claims16
A battery module, in which a plurality of battery cells are arranged, wherein:
- the battery cells are housed in an enclosing member, which is open on upper and lower sides, to be surrounded by the enclosing member,
- each of the battery cells stores an electrode body, which is formed by winding a collector foil, inside a cell case comprising long side walls and short side walls, and has a space between a corner where the long side wall and the short side wall intersect each other and the electrode body,
- the cell case has a recess partially depressed toward the space at the corner, and
- the battery module comprises a resin molded part molded of a resin between the battery cells and the enclosing member and between the adjacent battery cells, and the resin of the resin molded part enters the recess.
A manufacturing method of a battery module, in which a plurality of battery cells are arranged, the manufacturing method comprising:
- a housing process of arranging and housing a plurality of cell cases in an enclosing member, which is open on upper and lower sides, so that the cell cases are surrounded by the enclosing member, wherein each of the cell cases has a recess partially depressed toward an inner side of the cell case at a corner where a long side wall and a short side wall of the cell case intersect each other;
- a resin molding process of forming a resin molded part by integrally molding a resin between the cell cases housed in the enclosing member and the enclosing member and between the adjacent cell cases, wherein the resin of the resin molded part enters the recess;
- an electrode body storing process of storing an electrode body, which is formed by winding a collector foil, into each of the cell cases after the resin molded part is formed;
- and
- a sealing body attaching process of attaching a sealing body to the cell case storing the electrode body.
Dependencies are inferred from the claim text.