Traction Battery Testing Questions...

you need to dischrge not charge

put you brake on ( parking the little think to th left of you brakepedal )
put the prius in to reverse
put 1 foot on the normal brake pedal and 1 foot push on the gas pedal

if you just started the car wait for it to warm up and shutdown

then what happens is that the car wil discharge the battery using MG2

do this for 5 min and then stop
also keep a eye on the soc dont let it drop to low

log that and see what happens

 

Your shift position is in [P] and the ICE was on, there was not much loading on the HV Battery, hence the small voltage difference.

To do the proper Stall test, you need to shift to [R]. Keep your left foot pressed firmly on the brake pedal and slowly increase the accelerator pedal until the engine starts. Once the engine starts, release the accelerator pedal to let engine stop and repeat. Here are the procedures:

Vincent

 

my prius does not start the ICE. i keep the gas pedal pressed and see arrows go from battery to wheels ( keep car steady with brak pedal on )
i do not need to release when ice starts because its not starting..

look ad pdf.. i think its a pas

 

The thing that concerns me with this test is the risk of MG2 windings being overheated especially those at the top of the motor not covered in oil, as with no motor or gear movement these windings are not being cooled. I seem to remember noticing on pictures of burnt out MG's that it is usually the top windings that are burnt possibly due to less coolant on the windings causing insulation brake down. Or am I being over cautious.
It seems to me the idea of reversing up a hill or on a rolling road would be a safer if not more difficult solution.

 

its only !3 to 4 amps the prius prevents is from doing more i guess
even if i press the pedal down more.. nothing happens
i also looked at the temp
and it did go up ofcourse but not high, 40Ceklsius max

 

If your ICE did not start, HV Bty was not at its max. load. The intention is to increase the accelerator to a point where HV Bty is at its max. load such that ICE needed to start to turn MG1 in order to supply current to MG2. Once you reach that point, you need to back up the accelerator a little bit so as to shut down ICE. As the SOC drops, the point where accelerator is at max. load will also change. Therefore, you need to adjust the accelerator accordingly.

Vincent

 

i pressed the pedal fully and also not fully buth same thing.
maybe gen 1 thing?

 

You could be right about being gen 1 only. The Skid Control ECU in Gen 2 may have requested HV ECU to reduce torque on MG2 since the brake pedal is pressed.

Vincent

 

I have as yet not checked the current load, but 3 to 4amps for 5 minuets does not sound a realistic load on a 6APH battery, this discharge only represents about 4% of it's capacity. This though even at 4amps is 800watts of heating into the MG for 5 minuets.

 

I had a chance to check MG2 current today in my GEN2. Without the brake pedal pressed I could easily reach 40amps before the car started to move against the parking brake, MG input 8KW. With the foot brake applied only 3 to 4amps to MG with no increase when gas pedal was pressed. I do not think this method of checking battery condition will work with GEN2 Prius