CHARGE CONTROL OF A METAL-AIR BATTERY
First Claim
1. :
- A method for managing charge of a metal-air battery comprising at least one cell, the at least one cell comprising at least a negative electrode, a first positive air electrode, and a second positive oxygen-release electrode, the method comprising, for each cell, during application of a current to the at least one cell that results, during charging, in the flow of charging current between the negative electrode and the second positive oxygen-release electrode;
comparing an absolute value of a potential of the negative electrode to a critical threshold value, the potential of the negative electrode being determined relative to the first positive air electrode;
when the absolute value of the potential of the negative electrode reaches the critical threshold value, diverting an excess charging current that is a function of a difference between a current applied to the at least one cell and the charging current.
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Abstract
A method for managing the charge of a metal-air battery comprising at least one cell. The cell comprises a negative electrode, a first positive air electrode and a second positive oxygen-release electrode. For each cell, during the application of a charge current circulating in the cell between the negative electrode and the second positive oxygen-release electrode, the absolute value of a potential of the negative electrode is compared with a critical threshold value, the potential of the negative electrode being determined relative to the first positive air electrode. When the absolute value of the potential of the negative electrode reaches the threshold value, a surplus charging current, depending on the difference between the current applied to the cell and the charging current, is diverted.
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Citations
15 Claims
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1. :
- A method for managing charge of a metal-air battery comprising at least one cell, the at least one cell comprising at least a negative electrode, a first positive air electrode, and a second positive oxygen-release electrode, the method comprising, for each cell, during application of a current to the at least one cell that results, during charging, in the flow of charging current between the negative electrode and the second positive oxygen-release electrode;
comparing an absolute value of a potential of the negative electrode to a critical threshold value, the potential of the negative electrode being determined relative to the first positive air electrode; when the absolute value of the potential of the negative electrode reaches the critical threshold value, diverting an excess charging current that is a function of a difference between a current applied to the at least one cell and the charging current. - View Dependent Claims (2, 3, 4, 5, 6, 7)
- A method for managing charge of a metal-air battery comprising at least one cell, the at least one cell comprising at least a negative electrode, a first positive air electrode, and a second positive oxygen-release electrode, the method comprising, for each cell, during application of a current to the at least one cell that results, during charging, in the flow of charging current between the negative electrode and the second positive oxygen-release electrode;
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8. :
- A charge manager for a cell of a metal-air battery comprising at least one cell, the cell comprising at least a negative electrode, a first positive air electrode, and a second positive oxygen-release electrode, the charge manager comprising an electronic circuit for each cell, arranged so as to, during application of a current to the cell that results, during charging, in the flow of charging current between the negative electrode and the second positive oxygen-release electrode;
comparing an absolute value of a potential of the negative electrode to a critical threshold value, the potential of the negative electrode being determined relative to the first positive air electrode; when the absolute value of the potential of the negative electrode reaches the threshold value, diverting an excess charging current that is a function of difference between current applied to the cell and the charging current. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
- A charge manager for a cell of a metal-air battery comprising at least one cell, the cell comprising at least a negative electrode, a first positive air electrode, and a second positive oxygen-release electrode, the charge manager comprising an electronic circuit for each cell, arranged so as to, during application of a current to the cell that results, during charging, in the flow of charging current between the negative electrode and the second positive oxygen-release electrode;
Specification