Good Day,
After countless hours of researching NiMH rechargeable batteries I'm still left with basic questions about their charging characteristics, specifically the voltage, current and resistance profiles as they change in response to 1) constant voltage source and 2) constant current source
Can someone confirm these generalizations?
a) assuming no current limiting: the resistance of a charging battery increases as it approaches the charging voltage because there is a diminishing voltage difference across the circuit and therefore a reduction in current
b) assuming a constant current source: as the battery charges, the charger must increase its voltage in order to maintain a constant current because there is only so much "room" and eventually chemical space becomes limited and for the reaction to continue at a steady rate more "input force" is required
c) a and b are really the same process just controlled differently
Thanks!
After countless hours of researching NiMH rechargeable batteries I'm still left with basic questions about their charging characteristics, specifically the voltage, current and resistance profiles as they change in response to 1) constant voltage source and 2) constant current source
Can someone confirm these generalizations?
a) assuming no current limiting: the resistance of a charging battery increases as it approaches the charging voltage because there is a diminishing voltage difference across the circuit and therefore a reduction in current
b) assuming a constant current source: as the battery charges, the charger must increase its voltage in order to maintain a constant current because there is only so much "room" and eventually chemical space becomes limited and for the reaction to continue at a steady rate more "input force" is required
c) a and b are really the same process just controlled differently
Thanks!