Process for charging maintenance-free lead batteries with a fixed electrolyte
First Claim
1. A process for rapid charging of a maintenance-free lead battery with a fixed electrolyte, comprising the steps of:
- charging said battery during a first charging state with a constant current until a temperature-dependent voltage is reached;
charging said battery during a second charging stage at said temperature-dependent voltage reached during said first charging stage for a defined time period, and in voltage-controlled manner, wherein said charging voltage is continuously adjusted to the temperature of said battery; and
charging said battery during a third charging stage for a defined time period, wherein said charging during said third charging stage is a secondary charging according to an I/V characteristic curve which proceeds at a limited current until a maximum voltage is reached, and which then proceeds at said maximum voltage, wherein said maximum voltage is higher than said temperature-dependent voltage of the second charging stage.
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Abstract
A three-stage rapid charging process for maintenance-free lead storage batteries with a fixed electrolyte, which produces consistently recurring full charging of both electrode polarities even under cyclic loading, includes a first charging stage which proceeds at a constant current of the magnitude of a four-hour to eight-hour current until a temperature-dependent charging voltage is reached, a second charging stage which then continues at this temperature-dependent charging voltage for a limited time, and which is continuously adjusted to the battery'"'"'s temperature, and a third charging stage which is again time-limited and which constitutes a secondary charging which proceeds according to an I/V characteristic curve with an initial charging current limited to between 0.05 and 0.5 times a ten-hour current and a battery voltage which is limited to between 2% and 8% above the temperature-dependent charging voltage.
69 Citations
27 Claims
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1. A process for rapid charging of a maintenance-free lead battery with a fixed electrolyte, comprising the steps of:
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charging said battery during a first charging state with a constant current until a temperature-dependent voltage is reached; charging said battery during a second charging stage at said temperature-dependent voltage reached during said first charging stage for a defined time period, and in voltage-controlled manner, wherein said charging voltage is continuously adjusted to the temperature of said battery; and charging said battery during a third charging stage for a defined time period, wherein said charging during said third charging stage is a secondary charging according to an I/V characteristic curve which proceeds at a limited current until a maximum voltage is reached, and which then proceeds at said maximum voltage, wherein said maximum voltage is higher than said temperature-dependent voltage of the second charging stage. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 25, 26, 27)
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17. A process for rapid charging of a maintenance-free lead battery with a fixed electrolyte, in three successive stages comprising:
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charging said battery during a first charging stage with a constant current between a four-hour current and an eight-hour current until a temperature-dependent charging voltage is reached; charging said battery during a second charging state at said temperature-dependent voltage reached during said first charging stage and in voltage-controlled manner, wherein said first charging stage and said second charging stage continue for a combined time period of between four and ten hours, and wherein said charging voltage is continuously adjusted to the temperature of said battery; and charging said battery during a third charging stage for a defined time period, wherein said charging during said third charging stage is a secondary charging according to an I/V characteristic curve which initially proceeds at a current limited to between 0.05 and 0.5 times a ten-hour current until a maximum voltage is reached, and which then proceeds at said maximum voltage, which is limited to between 2% and 8% above said temperature-dependent charging voltage. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification