I don't understand the EE-level abstract physics, and in fact for this discussion, please emphasize actual products out in the marketplace, use the theory only as needed to explain their behaviour as much as possible.
Context is a large low-SoC LI bank that wants to pull huge amps, fed by a charge source with limited power.
There are plenty of charge sources that set a maximum cap on output current, as well as your CV cap setpoint. Some even better, let you adjust that maximum cap on output current on a per-session basis.
These I've been classifying as "current limiting", and "adjustable current" respectively.
But they are not strictly speaking a "current source" are they, in the ideal theoretical POV, as opposed to a "voltage source"?
This has come up as I've discovered the law "you may not connect two current sources in series", looking at @doctorbass brilliant charging array idea using looped-back DC-DC converters.
Flatpack2, the big Huawei supply etc, apparently can and do get connected in series, but also feature adjustable current output.
Then you have power supplies like Mean Well, some models have explicit current limiting, others just OCP, of type "current limiting" as opposed to "hiccup" or "latching." These usually kick in at a level far above their continuous current output rating.
Would that be usable in this LI charging scenario? I would think not, if the feature results in the voltage dropping below what's required to get charging current into the battery.
Any and all guidance on these topics would be greatly appreciated, including links to 101-level learning resources.
Context is a large low-SoC LI bank that wants to pull huge amps, fed by a charge source with limited power.
There are plenty of charge sources that set a maximum cap on output current, as well as your CV cap setpoint. Some even better, let you adjust that maximum cap on output current on a per-session basis.
These I've been classifying as "current limiting", and "adjustable current" respectively.
But they are not strictly speaking a "current source" are they, in the ideal theoretical POV, as opposed to a "voltage source"?
This has come up as I've discovered the law "you may not connect two current sources in series", looking at @doctorbass brilliant charging array idea using looped-back DC-DC converters.
Flatpack2, the big Huawei supply etc, apparently can and do get connected in series, but also feature adjustable current output.
Then you have power supplies like Mean Well, some models have explicit current limiting, others just OCP, of type "current limiting" as opposed to "hiccup" or "latching." These usually kick in at a level far above their continuous current output rating.
Would that be usable in this LI charging scenario? I would think not, if the feature results in the voltage dropping below what's required to get charging current into the battery.
Any and all guidance on these topics would be greatly appreciated, including links to 101-level learning resources.