Method of determining the charging state of a zinc-bromine battery and method of charging such battery
First Claim
1. A method for determining the charging state of a zinc-bromine battery, comprising the steps of:
- determining, directly prior to measuring of at least one cell of a rechargeable zinc-bromine battery comprising at least one cell and a plurality of series connected bipolar electrodes and circulating aqueous electrolytes, wherein oxidized bromine ions in conjunction with a complexing agent dissolved in aqueous electrolyte form a complex which is difficult to dissolve in the electrolyte, and zinc is separated at the electrode, and a respective diaphragm is arranged between electrode chambers, whether current is being drawn from or delivered to the at least one cell;
measuring the electrical voltage of the at least one cell; and
evaluating the measured electrical voltage.
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Accused Products
Abstract
The method of determining the charging state of a rechargeable zinc-bromine battery which contains a plurality of series connected bipolar electrodes and circulating aqueous electrolytes, wherein oxidized bromine ions in conjunction with a complexing agent dissolved in aqueous electrolyte form a complex which is essentially insoluble in the electrolyte and zinc is separated at the electrode, and wherein a respective diaphragm is arranged between electrode chambers, entails determining the electrical voltage of one or a number of cells connected in series, especially during a predetermined removal of current per predetermined time interval, and evaluating the determined electrical voltage, especially indicating or displaying the same.
33 Citations
16 Claims
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1. A method for determining the charging state of a zinc-bromine battery, comprising the steps of:
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determining, directly prior to measuring of at least one cell of a rechargeable zinc-bromine battery comprising at least one cell and a plurality of series connected bipolar electrodes and circulating aqueous electrolytes, wherein oxidized bromine ions in conjunction with a complexing agent dissolved in aqueous electrolyte form a complex which is difficult to dissolve in the electrolyte, and zinc is separated at the electrode, and a respective diaphragm is arranged between electrode chambers, whether current is being drawn from or delivered to the at least one cell; measuring the electrical voltage of the at least one cell; and evaluating the measured electrical voltage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. In a method of determining the charging state of a zinc bromine battery having at least one cell and which contains a plurality of series connected bipolar electrodes and circulating aqueous electrolytes, wherein oxidized bromine ions in conjunction with a complexing agent dissolved in aqueous electrolyte form a complex which is difficult to dissolve in the electrolyte and zinc is separated at the electrode, and a respective diaphragm is arranged between electrode chambers, the improvement comprising:
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determining the electrical voltage of at least one cell of the zinc-bromine battery including measuring the electric voltage; evaluating the determined electrical voltage; and determining directly prior to said measuring of the electrical voltage whether current is being drawn from or delivered to the cell.
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Specification