Building a HCHII grid charger
#72
Re: Building a HCHII grid charger
I am trying to build the following grid charger / discharger that I designed for my 2008 Civic IMA battery. It is not yet tested.I already ordered the components.Hope it works.Any criticisms or suggestions for improvement?
Thank you
Thank you
#73
Re: Building a HCHII grid charger
LPC-100-350 will not work below 143VDC except for very brief pulses. May take a long time to bring the battery back from a deep discharge.
A 500Ω resistor is going to take a long time to discharge the pack.
The 1N4007 looks like a bypass diode. You need a protection diode in the (+) of the PS.
A 500Ω resistor is going to take a long time to discharge the pack.
The 1N4007 looks like a bypass diode. You need a protection diode in the (+) of the PS.
#74
Re: Building a HCHII grid charger
Thanks for the feedback.
I'm sorry but my English is a little "rusty".
As I already ordered the LPC-100-350, I am thinking of putting a resistance in series with the LED driver to reduce the voltage (maybe 120 or 150 ohm / 20W).I could also place a switch in parallel with the resistance to short circuit when the battery reaches higher voltages.
I know that the 500ohm resistance makes the discharge very long but I am thinking of placing a socket in the box to connect additional external loads in parallel with the internal resistance (such as 230V lamps).
The protection diode you refer to, must be placed in series with the LED driver (on the positive pole), right?
Is the purpose of the diode to protect the PS during charging, during discharge, or both?During the discharge, the circuit is interrupted at the negative pole by means of the switch (2).
I'm sorry but my English is a little "rusty".
As I already ordered the LPC-100-350, I am thinking of putting a resistance in series with the LED driver to reduce the voltage (maybe 120 or 150 ohm / 20W).I could also place a switch in parallel with the resistance to short circuit when the battery reaches higher voltages.
I know that the 500ohm resistance makes the discharge very long but I am thinking of placing a socket in the box to connect additional external loads in parallel with the internal resistance (such as 230V lamps).
The protection diode you refer to, must be placed in series with the LED driver (on the positive pole), right?
Is the purpose of the diode to protect the PS during charging, during discharge, or both?During the discharge, the circuit is interrupted at the negative pole by means of the switch (2).
#75
Re: Building a HCHII grid charger
120-150Ω resistor should work, but it may not be needed. 20W seems a little tight for the needed power dissipation.
The 500Ω resistor will be nice for discharges below 132V.
It's to protect the PS. If there's a chance the PS can be connected to the battery with the PS power off, you need it.
Since others have made the mistake, I'll point it out in case you missed it. The IPU cover MUST be installed, or the battery cooling fan does no good.
The 500Ω resistor will be nice for discharges below 132V.
It's to protect the PS. If there's a chance the PS can be connected to the battery with the PS power off, you need it.
Since others have made the mistake, I'll point it out in case you missed it. The IPU cover MUST be installed, or the battery cooling fan does no good.
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