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TC-Charger DC/DC Converter TDC-IY-108 – 1 kW - how to connect

6K views 19 replies 6 participants last post by  pdove 
#1 ·
Hi,

my name is Alex and I'm currently building an Essex 1928 EV Conversion.
Everthing is set up and the system is running so far exept for the DCDC converter.
The manual isn't very clear about the pin definition, colors of wires change and connectors look different than in reality.
So I connected it to the system but it doesn't output voltage (should be around 14V) - therefore it doesn't charge the 12V battery.
I found a post on the internet with someone facing exact the same issue, so I'm trying it here.
Also it should be the CAN Version, so I also tried to connect it to the CAN network - didn't work either.
Regarding my ev part distributer the brown wire (Pin 4) of the connector is the Enable Pin, which should be connected to 12V.
I attached the photos for reference.

Microphone Line Camera accessory Audio equipment Gas


The manual is also attached.

So I hope for any useful answers and thoughts.
 

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Discussion starter · #4 ·
That picture is pretty self-explanatory. There is enable signal for which you need to apply another source of +12v. I assume it references the chassis for the negative, but it would be good to see the pinout for that entire connector to confirm.

It is kind weird to design a DC-DC that will require the same votlage to operate as the one it outputs! But that's the Chinese engineering for you.
The picture is actually a photo from my own converter - I named the connections as I connected them.
In the manual I attached is the original schematic, where the pin connector looks different and the description is not really clear.

Due to it is used in a car I only have one 12V source. Would be akward if I had to use another 12V source to enable the converter.

Also the input voltage is 96-140V and the output voltage is 12V (in fact it has to be 14V to charge the battery like an alternator)
So it takes the High Voltage from the traction pack to charge the 12V system.

My only question is, how to activate the converter and what the exact pin definition is because I really tried many different ways and pins to enable this thing
 
Discussion starter · #6 ·
But logically it must be unimportant for the dc converter where the 12V comes from. It doesn't know if it's provided by the bms or the battery itself.
Except I use the CAN interface (which I'm not) so the BMS can tell the converter to start.
But it has to work without CAN I guess.

Also this connector is 4x1 but mine is 2x2.
This is what really freaks me out because I can't find any plan where there is the connector which is on my converter...
These chinese manuals really tick me off
 
Discussion starter · #18 ·
So technically it isn't necessary to have a 12V battery but I also think it's important for safety reasons (although the car I have converted doesn't have any safety features due it's an 1928 oldtimer :p)
I wonder if anyone has the same issues because this is one of the most common DC converters for EV conversions I guess.
 
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