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Under review

Tesla Conversion

tt-tronix 2 years ago updated by Tido 2 years ago 6

Hello,


I am currently preparing to convert my 2009 NiMH VX-1 to Lithium with 3 Tesla Model S battery packs. My problem is, that the charger (EVPS / Runke Gold) died :-(


If the attempts repairing the charger fail, which charger should I purchase? EVPS or ESD? The goal is to implement the BMS from this shop.....


I have the Peak-CAN Adapter, so programming is no problem.


Best regards,

Tido


Hi Tido!


You will have something about 100Ah, so you should think about our new PFC charger 3.3kW or two in parallel 6.6kW. You can find them on our store:


http://www.shop.vectrixparts.com/3-3kw-pfc-battery-charger.html


http://www.shop.vectrixparts.com/6-6kw-pfc-battery-charger.html


Best regards, Mateusz

Thanks for your answer! I have already seen your new charger options.


But if I had only the both options EVPS/Runke or ESD - which one would you choose?


Is it possible to update the VX components (charger/MC/dashboard) to lithium without a BMS in the first step? Or are there any significant drawbacks?


Tido

Under review

Take the EVPS/Runke. ESD charger can be programmed to work with lithium setup but doesn't handle well low current at the end of charging,

Hello,


now I found the real problem in the charger. I found, that the front temperature board was completely burnt due to

loose wires in the temperature sensor harness touching some cells. So inside the charger the 7805 Voltage regulator that serves the temperature sensors was defect. Now the charger appears on the CAN-BUS again and shows the correct battery voltage in the left display.


Since the charger died, I was still able to ride the Vectrix. But a few days ago, I started the Vectrix without charger and without temperature boards (they were disconnected after the charger failed). But since then I have the problem, that the MC (SW 1021) does not respond. It disappeared completely in ScooterDiag :-(


The VX-1 can be switched on or wakes up by plugging it in, but I am not able to switch it off with the key. Does anybody  have an idea, what this can be? MC lost firmware somehow? Is this a known problem?


Best regards

Tido


BTW.: The Universal BMS from the shop arrived here only two days later. I have made the cable tree ready for connecting to the TESLA cells and hope to get it working soon....


Hi Tido!

I think the problem is in CAN connection. Some of components is blocking it. 

Try to disconnect ICM and check again. If it not help check every CANbus cables, maybe you find any short.


Best regards,

Mateusz

Hello Mateusz,


The CANbus cables were not the problem. I borrowed another MC in order to check, if this one is working in my scooter. And this one does the job. It appears on the bus, Ready-Go is OK. Then I tracked the CANbus signals from J4 to U9 over the optocouplers to the DSP. Ingoing signal on RX is OK, but no response on TX side. Clock is OK, 5V too.


So I suspect the DSP controller a) to be defective or b) it lost firmware somehow. I have seen this phenomenon on other µCs before so do you think it is worth trying to reprogram it at Vectrix? Did you see such a defect before?


Best regards,

Tido