Lithium reservoir system and method for rechargeable lithium ion batteries
First Claim
1. A lithium-ion battery cell, comprising:
- at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector;
a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell;
an auxiliary electrode including a lithium reservoir; and
a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell.
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Accused Products
Abstract
A lithium-ion battery cell includes at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector, a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell, an auxiliary electrode including a lithium reservoir, and a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell.
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Citations
20 Claims
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1. A lithium-ion battery cell, comprising:
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at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector; a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell; an auxiliary electrode including a lithium reservoir; and a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method to replenish lithium-ion capacity of a battery cell, the method comprising:
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determining a state of charge of each working electrode; and transferring lithium from an auxiliary electrode to at least one of the working electrodes based on the determined state of charge, wherein the battery cell includes; at least two working electrodes, each including an active material, an inert material, an electrolyte and a current collector, a first separator region arranged between the at least two working electrodes to separate the at least two working electrodes so that none of the working electrodes are electronically connected within the cell; the auxiliary electrode including a lithium reservoir; and a second separator region arranged between the auxiliary electrode and the at least two working electrodes to separate the auxiliary electrode from the working electrodes so that none of the working electrodes is electronically connected to the auxiliary electrode within the cell. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification