Monday, August 25, 2014

FINAL BOTTOM BALANCE PASS AND FIRST CHARGE

Sunday started early, continuing to bottom balance the remaining 18 cells to 2.9 volts. They were actually charged to 2.935 but settled to around 2.909 volts after they sat for awhile. 


FINAL BOTTOM BALANCE

All of the cells were checked again with a voltmeter and the highest cell was 2.9 volts. My 220 Volt AC cable was too short, so I had to run over to the hardware store and get another 10 ft of 12/3 cable to hook up the charger. Then the negative lead from the charger to the module had to have a shunt installed and a little length added to te cable. Finally all of the connections were made, the volt meter hooked up to the highest cell, the JLD404 connected to the shunt and Pack positive and negative, and the 220 breaker was turned on.

BETTER PLACE MODULE FIRST CHARGE

The charger had been set to charge the 37 HiPower cells but the voltage will need turned up for the Better Place Module, as at 4 volts/cell, were still taking a charge with the voltage rising slowly and not yet on the vertical curve.


TABLE AND  GRAPH OF FIRST CHARGE

Not sure why the amps on the graph above fall off at 28 minutes but you can see from the charge curve that it did not reduce to 10.2 amps until after 60 minutes.

While the module was charging, I did some research to find a wiring diagram to hook up two relays so when the key is turned to start, it will open the contactors and put 12 volt power to the controller, that stays energized until the key is turned from the run to off position. Finally I found a schematic for the same Bosch relays I am going to use.


START SWITCH RELAY WIRING DIAGRAM

Work was a little slow today so I took a half day off so possibly I will start wiring up the relays and making up the battery pack leads to the controller.

More later,

Randy 
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