Electrochemical cell and manufacturing method of the electrochemical cell
AssigneeSeiko Instruments Inc.
InventorsShunji Watanabe, Kazumi Tanaka, Yoshimi Kanno, Tsuneaki Tamachi
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Abstract
An electrochemical cell includes an electrode body which includes a positive electrode and a negative electrode and an outer package which is formed by overlapping a first member and a second member. The outer package includes: a housing portion which houses the electrode body; and a sealing portion which is formed along an outer circumference of the housing portion, by fusing and bending the first member and the second member, at a portion corresponding to the outer circumference of the housing portion.
Claims12
An electrochemical cell comprising:
- an electrode body including a positive electrode and a negative electrode;
- and
- a cylindrical outer package comprising overlapping first and second members,
- wherein the first and second members comprise a laminate member that is configured to stack a metal sheet, a resin fusion layer, and a resin protective layer, and
- wherein the outer package includes:
- a housing portion that houses the electrode body;
- and
- a cylindrical sealing portion along an outer circumference of the housing portion, the sealing portion comprising a bended and fused portion of the first member and the second member having a curved shape along an entire outer circumference of the housing portion and comprising a single upstanding wall spaced away from the housing portion.
A manufacturing method of an electrochemical cell, comprising:
- a sealing process that seals a sealing portion of an outer circumference of a housing portion in which houses an electrode body;
- a fixing process that fixes a part of the sealing portion which is sealed in the sealing process;
- and
- a molding process that bends other portion of the sealing portion that is not fixed in the fixing process, while the fixing process is being performed.
An electrochemical cell comprising:
- an electrode body that includes a positive electrode and a negative electrode;
- and
- an outer package including overlapping first and second members,
- wherein the outer package includes:
- a housing portion that houses the electrode body;
- and
- a sealing portion along an outer circumference of the housing portion, fused and bended regions of the first member and the second member, at a portion corresponding to the outer circumference of the housing portion,
- wherein the second member is a metal where the first member is a laminate member, or the first member is a metal where the second member is a laminate member, and
- wherein the laminate member is configured to stack a metal sheet, a resin fusion layer, and a resin protective layer.
Dependencies are inferred from the claim text.