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US 2024/0266589 A1Published application
Power storage device and method for producing the same
AssigneePrime Planet Energy & Solutions, Inc.
InventorYozo UCHIDA
Life of this patent
Estimating the term…
Abstract
A power storage device is provided with a parallelepiped box-like case and an electrode body housed in the case. The case includes a bottomed rectangular cylindrical case body having a rectangular opening and forming a second primary wall portion and four side wall portions, and a rectangular lid forming a first primary wall portion, in which a lid peripheral edge portion is joined to an opening peripheral edge portion of the opening of the case body over an entire circumference. The first primary wall portion and the second primary wall portion of the case elastically compress an electrode laminated portion of the electrode body in an electrode body thickness direction.
Claims14
A power storage device comprising:
- a case;
- and
- an electrode body housed in the case,
- the case of a parallelepiped box-like shape including:
- a first primary wall portion of a rectangular shape;
- a second primary wall portion of a rectangular shape opposing to the first primary wall portion;
- and
- four side wall portions, each of which is of a rectangular shape, connects the first primary wall portion and the second primary wall portion, and extends in a case thickness direction,
- the electrode body including electrode plates and an electrode laminated portion of a parallelepiped shape in which the electrode plates are laminated in an electrode body thickness direction, and
- the electrode body being housed in the case in such a position that the electrode body thickness direction is in parallel to the case thickness direction, wherein
- the case includes:
- a case body of a bottomed rectangular cylindrical shape configuring the second primary wall portion and the four side wall portions and being formed with an opening of a rectangular shape configured by the four side wall portions;
- and
- a lid of a rectangular shape configuring the first primary wall portion in which a lid peripheral edge portion is joined to an entire circumference of an opening peripheral edge portion of the opening of the case body, and
- the first primary wall portion and the second primary wall portion of the case elastically compress the electrode laminated portion of the electrode body in the electrode body thickness direction.
12 more elements
A method for producing a power storage device comprising:
- a case;
- and
- an electrode body housed in the case;
- the case of a parallelepiped box-like shape including:
- a first primary wall portion of a rectangular shape;
- a second primary wall portion of a rectangular shape opposing to the first primary wall portion;
- and
- four side wall portions, each of which is of a rectangular shape, connects the first primary wall portion and the second primary wall portion, and extends in a case thickness direction,
- the electrode body including an electrode plate and an electrode laminated portion of a parallelepiped shape in which the electrode plates is laminated in an electrode body thickness direction, and
- the electrode body being housed in the case in such a position that the electrode body thickness direction is in parallel to the case thickness direction, wherein
- the case includes:
- a case body of a bottomed rectangular cylindrical shape configuring the second primary wall portion and the four side wall portions and being formed with an opening of a rectangular shape configured by the four side wall portions;
- and
- a lid of a rectangular shape configuring the first primary wall portion in which a lid peripheral edge portion is joined to an entire circumference of an opening peripheral edge portion of the opening of the case body, and
- the first primary wall portion and the second primary wall portion of the case elastically compress the electrode laminated portion of the electrode body in the electrode body thickness direction, wherein
- the method includes:
- housing the electrode body in the case body;
- pressing and compressing the electrode laminated portion of the electrode body in the electrode body thickness direction by placing the lid on the electrode body housed in the case body and applying an external force to the first primary wall portion configured by the lid and to the second primary wall portion of the case body;
- joining the lid peripheral edge portion of the lid to the opening peripheral edge portion of the opening portion of the case body over an entire circumference in a state in which the electrode body is pressed and compressed to form the case, and
- releasing the external force after the joining.
17 more elements
Dependencies are inferred from the claim text.