Lithium-ion battery
First Claim
1. A battery comprising:
- a positive electrode comprisinga current collector anda first active material;
a negative electrode comprisinga current collector anda second active material; and
an auxiliary electrode comprisinga current collector anda third active material;
wherein the auxiliary electrode is configured for a selective electrical connection to the negative electrode; and
at least one of a switch and a diode configured to implement the selective electrical connection as a function of at least one of the voltage difference between the positive and negative electrodes, the voltage difference between the positive and auxiliary electrodes, and the voltage difference between the negative and auxiliary electrodes;
wherein the first active material, the second active material, and the third active material are configured to allow doping and undoping of lithium ions; and
wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.
1 Assignment
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Accused Products
Abstract
A battery includes a positive electrode having a current collector and a first active material and a negative electrode having a current collector and a second active material. The battery also includes an auxiliary electrode having a current collector and a third active material. The auxiliary electrode is configured for selective electrical connection to one of the positive electrode and the negative electrode. The first active material, second active material, and third active material are configured to allow doping and undoping of lithium ions. The third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material.
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Citations
30 Claims
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1. A battery comprising:
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a positive electrode comprising a current collector and a first active material; a negative electrode comprising a current collector and a second active material; and an auxiliary electrode comprising a current collector and a third active material; wherein the auxiliary electrode is configured for a selective electrical connection to the negative electrode; and at least one of a switch and a diode configured to implement the selective electrical connection as a function of at least one of the voltage difference between the positive and negative electrodes, the voltage difference between the positive and auxiliary electrodes, and the voltage difference between the negative and auxiliary electrodes; wherein the first active material, the second active material, and the third active material are configured to allow doping and undoping of lithium ions; and wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A lithium-ion battery comprising:
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a first electrode including a first current collector and a first active material provided on the first current collector; a second electrode including a second current collector and a second active material provided on the second current collector, wherein the second electrode is a negative electrode; and a third electrode including a third current collector and a third active material provided on the third current collector, wherein the third electrode is configured for a selective electrical coupling to the second electrode; and at least one of a switch and a diode configured to implement the selective electrical coupling as a function of at least one of the voltage difference between the first and second electrodes, the voltage difference between the first and third electrodes, and the voltage difference between the second and third electrodes; wherein the third active material exhibits charge and discharge capacity below a corrosion potential of the second current collector and above a decomposition potential of the first active material. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14)
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15. A lithium-ion battery comprising:
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a positive electrode comprising a positive current collector and an positive electrode active material provided on at least one side of the positive current collector; a negative electrode comprising a negative current collector and a primary active material provided on at least one side of the negative current collector; and an auxiliary electrode comprising an auxiliary current collector and an auxiliary active material provided on at least one side of the auxiliary current collector, wherein the auxiliary active material includes a quantity of lithium; wherein the auxiliary electrode is configured for a selective electrical connection to the negative electrode; and at least one of a switch and a diode configured to implement the selective electrical connection as a function of at least one of the voltage difference between the positive and negative electrodes, the voltage difference between the positive and auxiliary electrodes, and the voltage difference between the negative and auxiliary electrodes; wherein the quantity of lithium provides sufficient electrochemically cyclable lithium to allow the positive electrode active material and the primary active material provided on the negative collector to exhibit charging and discharging capacity for the negative electrode below the corrosion potential of the negative current collector and for the positive electrode above the decomposition potential of the positive electrode active material. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A battery comprising:
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a positive electrode comprising a current collector and a first active material; a negative electrode comprising a current collector and a second active material; and an auxiliary electrode comprising a current collector and a third active material, the auxiliary electrode configured for a repeated, selective electrical connection to the negative electrode, the third active material providing excess capacity to the negative electrode when the auxiliary electrode is electrically connected to the negative electrode; at least one of a switch and a diode configured to implement the repeated, selective electrical connection as a function of at least one of the voltage difference between the positive and negative electrodes, the voltage difference between the positive and auxiliary electrodes, and the voltage difference between the negative and auxiliary electrodes; wherein the first active material, second active material, and third active material are configured to allow doping and undoping of lithium ions; and wherein the third active material exhibits charging and discharging capacity below a corrosion potential of the current collector of the negative electrode and above a decomposition potential of the first active material. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification