ELECTRODE STRUCTURE FOR NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY, METHOD FOR PRODUCING THE SAME, AND NON-AQUEOUS ELECTROLYTE SECONDARY BATTERY
First Claim
1. An electrode structure for a non-aqueous electrolyte secondary battery, comprising:
- an electrode including a current collector with two main surfaces and an active material layer formed on each of the main surfaces of the current collector, the current collector comprising a long strip-like metal foil and having an exposed part at at least one of an end of the electrode, a through-hole penetrating through the electrode, and a recess formed by removing the active material layer from one of the main surfaces of the electrode;
an electrode lead; and
a joint for joining the electrode and the electrode lead so as to provide electrical continuity between the exposed part of the current collector and the electrode lead.
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Accused Products
Abstract
An electrode 13 has an active material layer 12 formed on each of two whole main surfaces of a current collector 11. A part of an electrode lead 14 overlaps the electrode 13. One end face of the electrode 13 in the width direction of the electrode 13 is flush with one end face of the electrode lead 14. Joints 15 are formed at the one end of the electrode 13 in the width direction. The joints 15 join the electrode 13 and the electrode lead 14 so as to provide electrical continuity between the exposed part of the current collector 11 at the one end face of the electrode 13 in the width direction and the electrode lead 14. The joints 15 are formed, for example, by plasma welding.
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Citations
26 Claims
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1. An electrode structure for a non-aqueous electrolyte secondary battery, comprising:
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an electrode including a current collector with two main surfaces and an active material layer formed on each of the main surfaces of the current collector, the current collector comprising a long strip-like metal foil and having an exposed part at at least one of an end of the electrode, a through-hole penetrating through the electrode, and a recess formed by removing the active material layer from one of the main surfaces of the electrode; an electrode lead; and a joint for joining the electrode and the electrode lead so as to provide electrical continuity between the exposed part of the current collector and the electrode lead. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 26)
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21. A method for producing an electrode structure for a non-aqueous electrolyte secondary battery, comprising the steps of:
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(a) providing an electrode having an active material layer on each of two main surfaces of a current collector comprising a long strip-like metal foil, the current collector being exposed at at least one of an end of the electrode, a through-hole penetrating through the electrode, and a recess formed by removing the active material layer from one of the main surfaces of the electrode; and (b) forming a joint that joins the exposed current collector and an electrode lead so as to provide electrical continuity therebetween. - View Dependent Claims (22, 23, 24, 25)
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Specification