High energy charge and depolarization pulse conditioner for an enhanced-reliability lead-acid battery charger
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United States of America Patent
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Oct 23, 2001
Grant Date -
N/A
app pub date -
Jun 23, 2000
filing date -
Oct 19, 1999
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A controller (10) controls the application of charge pulses and discharge (depolarization) pulses to a battery (26) via a charge pulse circuit (22) and a discharge pulse circuit (24). A feedback circuit (18) allows the controller to monitor and adjust the charging process. A wave shaper (12) shapes the waveform of the charge pulses so as to limit the rise time of the charge pulses and thereby reduce reflected voltages and currents. A limiter (14) disables the charging circuit in the event that the controller should specify a charge pulse having an excessive duration or a continuous duration. Another limiter (16) limits the duration of the discharge pulses in the event that the controller should specify a discharge pulse having an excessive duration or a continuous duration. The charge pulse circuit is disabled whenever the controller specifies the application of a discharge pulse, and the discharge circuit is disabled whenever the controller specifies the application of a charge pulse. This prevents the simultaneous application of a charge pulse and a discharge pulse.
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