Method and device for charging lead accumulators
First Claim
1. A method for charging lead storage batteries, comprising applying a varying direct voltage from a battery-charging unit which is sufficient to generate gassing at the positive and negative pole, characterized in that this gassing is achieved by applying the direct voltage in intermittent current supply periods that are interrupted with pauses in which no current is supplied, having durations of between about 0.5 seconds and about 10 seconds wherein the current supplied to the battery is non-negative throughout the method.
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Accused Products
Abstract
According to the invention, lead storage batteries are charged by intermittently switching on and off a battery-charging unit (1, 2, 3) which is connected to a battery. The on and off times are suitably about 1 second when charging a battery. In the case of a maintenance charge, it is suitable to charge the battery with pulses in the region of a mains voltage period, with pauses of about 10 seconds. The circuit is suitably broken by means of a switch (4, 5) on the primary side of the transformer (1, 2). The switch may have the form of a relay with associated time circuit (4), although it is preferred to use a triac.
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Citations
11 Claims
- 1. A method for charging lead storage batteries, comprising applying a varying direct voltage from a battery-charging unit which is sufficient to generate gassing at the positive and negative pole, characterized in that this gassing is achieved by applying the direct voltage in intermittent current supply periods that are interrupted with pauses in which no current is supplied, having durations of between about 0.5 seconds and about 10 seconds wherein the current supplied to the battery is non-negative throughout the method.
- 4. A device for charging lead storage batteries comprising a transformer having a primary winding for connection to the electrical main, a secondary winding, a rectifier connected to the secondary winding, and a positive and a negative terminal intended for connection to a battery to be charged, characterized by an automatic switch means connected to the primary winding for selectively coupling the main on and off intermittently to the primary winding with short battery-charging periods interrupted by pauses in which no current is supplied, having durations of from 0.5 to 10 seconds, wherein said battery charging periods and said pauses between these charging periods are sufficient to generate gassing at the positive and negative pole in said batteries and the supplied current is non-negative.
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8. A method for charging lead storage batteries, comprising applying a varying direct voltage from a battery-charging unit which is sufficient to generate gassing at the positive and negative pole, characterized in that this gassing is achieved by applying the direct voltage in intermittent current supply periods that are interrupted with pauses in which no current is supplied, the current supply periods and the pauses having durations of from 0.5 to 1.5 seconds, wherein the supplied current is non-negative.
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9. A method for maintaining the charge of fully charged lead storage batteries, comprising applying a varying direct voltage from a battery-charging unit which is sufficient to generate gassing at the positive and negative pole, characterized in that this gassing is achieved by applying the direct voltage in intermittent current supply periods that are interrupted with pauses in which no current is supplied, the intermittent current supply pulses having a duration of not more than one-half second, and the pauses having durations of from 0.5 to 10 seconds, wherein the supplied current is non-negative.
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10. A device for charging lead storage batteries comprising a transformer having a primary winding for connection to the electrical main, a secondary winding, a rectifier connected to the secondary winding, and a positive and a negative terminal intended for connection to a battery to be charged, characterized by an automatic switch means connected to the primary winding for selectively coupling the electrical main on and off intermittently to the primary winding with short battery-charging periods interrupted by pauses in which no current is supplied, the switch means being set between a battery charging state in which the activation time periods are from 0.5 to 10 seconds duration, and a battery charge-maintaining state in which the charge-maintaining periods have a maximum duration of 0.5 seconds, wherein said battery charging periods and said pauses between these charging periods are sufficient to generate gassing at the positive and negative pole in said batteries and the supplied current is non-negative.
Specification