Cap for electrochemical cell
First Claim
Patent Images
1. An electrochemical cell comprising:
- a cell can having an opening;
electrolyte and an active-material roll in the cell can; and
a cap that closes the opening of the cell can, the cap comprising;
a substantially flat member that covers the opening of the cell can, the substantially flat member having a separation portion defined therein;
a diaphragm that covers the separation portion on an inside of the substantially flat member, andan inner member that forms the diaphragm, the inner member being wider than the substantially flat member, wherein the inner member forms a crimp around at least an edge of the substantially flat member, wherein the diaphragm is thinner than a portion of the inner member that forms the crimp.
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Abstract
An electrochemical cell includes: a cell can; electrolyte and an active-material roll in the cell can; and a cap that closes at least one opening of the cell can, the cap comprising: a substantially flat member that covers the opening, the substantially flat member having a separation portion defined therein; and a diaphragm that covers the separation portion on an inside of the substantially flat member.
32 Citations
24 Claims
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1. An electrochemical cell comprising:
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a cell can having an opening; electrolyte and an active-material roll in the cell can; and a cap that closes the opening of the cell can, the cap comprising; a substantially flat member that covers the opening of the cell can, the substantially flat member having a separation portion defined therein; a diaphragm that covers the separation portion on an inside of the substantially flat member, and an inner member that forms the diaphragm, the inner member being wider than the substantially flat member, wherein the inner member forms a crimp around at least an edge of the substantially flat member, wherein the diaphragm is thinner than a portion of the inner member that forms the crimp. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. An electrochemical cell comprising:
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a cell can having an opening; electrolyte and an active-material roll in the cell can; and a cap comprising; a substantially flat member being a support structure having an opening through it; a top plate covering the opening of the substantially flat member; and an inner member that forms a diaphragm that closes the opening of the cell can on an inside of the substantially flat member, the inner member being wider than the support structure, wherein the inner member forms a crimp around at least an edge of the support structure. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24)
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Specification