Energy storage device
First Claim
1. An energy storage device comprising:
- an electrode terminal;
at least one electrode body; and
a current collector electrically connecting the electrode terminal and the at least one electrode body,wherein the current collector includesa terminal connection portion electrically connected to the electrode terminal,two electrode body connection portions connected to the at least one electrode body, anda coupling portion extending from an end of the terminal connection portion and coupling the terminal connection portion and the two electrode body connection portions, andwherein the coupling portion has a substantially trapezoidal shape with one pair of parallel first and second sides, the first side is at the end of the terminal connection portion, the second side is at a lowermost end of the coupling portion, a length of the first side is larger than a length of the second side such that the two electrode body connection portions are connected to and extend from the second side.
3 Assignments
0 Petitions
Accused Products
Abstract
An energy storage device includes a positive electrode terminal, a first electrode body and a second electrode body, and a positive electrode current collector electrically connecting the positive electrode terminal and the first and second electrode bodies. The positive electrode current collector includes a terminal connection portion electrically connected to the positive electrode terminal, inner electrode body connection portions connected to the first and second electrode bodies, and a coupling portion extending from an end of the terminal connection portion and coupling the terminal connection portion and the inner electrode body connection portions. The coupling portion has a substantially trapezoidal shape with a width at a connection end with the end of the terminal connection portion being larger than a width at a connection end with the inner electrode body connection portions.
18 Citations
13 Claims
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1. An energy storage device comprising:
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an electrode terminal; at least one electrode body; and a current collector electrically connecting the electrode terminal and the at least one electrode body, wherein the current collector includes a terminal connection portion electrically connected to the electrode terminal, two electrode body connection portions connected to the at least one electrode body, and a coupling portion extending from an end of the terminal connection portion and coupling the terminal connection portion and the two electrode body connection portions, and wherein the coupling portion has a substantially trapezoidal shape with one pair of parallel first and second sides, the first side is at the end of the terminal connection portion, the second side is at a lowermost end of the coupling portion, a length of the first side is larger than a length of the second side such that the two electrode body connection portions are connected to and extend from the second side. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An energy storage device comprising:
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an electrode terminal; first and second electrode bodies, each of the first and second electrode bodies comprising a positive electrode, a negative electrode, and a separator; and a current collector electrically connecting the electrode terminal and the first and second electrode bodies, wherein the current collector includes a terminal connection portion electrically connected to the electrode terminal, two electrode body connection portions connected to the first and second electrode bodies, respectively, and a coupling portion extending from an end of the terminal connection portion and coupling the terminal connection portion and the two electrode body connection portions, and wherein when viewed parallel to a direction in which the coupling portion extends from the end of the terminal connection portion, the coupling portion is located between the first and second electrode bodies, and the coupling portion has a substantially trapezoidal shape with one pair of parallel first and second sides, the first side is at the end of the terminal connection portion, the second side is at a lowermost end of the coupling portion, a length of the first side is larger than a length of the second side such that the two electrode body connection portions are connected to and extend from the second side.
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12. An energy storage device comprising:
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an electrode terminal; first and second electrode bodies, each of the first and second electrode bodies comprising a positive electrode, a negative electrode, and a separator wound around a winding axis; and a current collector electrically connecting the electrode terminal and the first and second electrode bodies, wherein the current collector includes a terminal connection portion electrically connected to the electrode terminal, two outer legs extending from a side of the terminal connection portion, the side of the terminal connection portion being parallel to the winding axis, a coupling portion extending from an end of the terminal connection portion, the end of the terminal connection portion being perpendicular to the winding axis, and, two inner legs extending from the coupling portion between the two outer legs, and wherein the coupling portion has a substantially trapezoidal shape with one pair of parallel first and second sides, the first side is at the end of the terminal connection portion, the second side is at a lowermost end of the coupling portion, a length of the first side is larger than a length of the second side such that the two inner legs are connected to and extend from the second side. - View Dependent Claims (13)
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Specification