Michael's MR-02-EV

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MikeD
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Real Name: Michael Day
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TC Charger Brand DC-DC Converter TDC-320-12JG

Post by MikeD » Mon, 08 Oct 2018, 13:17

Its been some time since my last post but the work on MR02EV has continued regardless, the latest upgrade being a TDC-320-12JG DC-DC converter from TC Charger, supplied by Elmofo.com.au

Over time I have used several DC-DC converters and the TDC-320-12JG is by far the best. Its is not the cheapest by is very high quality and has a reputation for reliability.

Features
• Max Output Power: 1500W
• Nominal Output Current(@12V): 110A
• Max Efficiency: ≥93%
• Voltage Regulation: ≤1.5%
• IP Standard: IP67
• Operating Temperature: -40℃~+60℃
• Storage Temperature: -45~105℃
• Insulation Resistance: In the environment of (23±2) ℃ and moisture at 80%-90%
• Noisy Distance in 1.5m,Noise: ≤50dB
• Cooling Method: Air Cooling
• Control Method: 12V Enable
• Size (mm): 222(L) × 109(W) × 79(H)
• Net Weight: 4kg

Safety Protections
• Input over/under voltage and reverse polarity protection;
• Output over current / short circuit and over temp protection.
dc-dc2.jpg
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AEVA National & NSW Branch Treasurer

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jonescg
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Re: Michael's MR-02-EV

Post by jonescg » Thu, 11 Oct 2018, 08:36

Nice one! I got the air cooled one for the Prelude conversion. If ends up running too hot I can always swap the fins for a cooling block.
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MikeD
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Upgrading The 12V Ancillary Battery

Post by MikeD » Sun, 14 Oct 2018, 13:25

When installing the TDC-320 DC-DC converter I also replaced the 12V ancillary battery with a Drypower 12SB22C 12Volt 22Ah battery. I chose a sealed lead-acid because they are designed for a trickle (or float) charge, which is most of its life in MR02EV.

22Ah is a significant increase in capacity over the previous 15Ah auxiliary battery, which was deliberate. MR02EV needs a pretty “stiff” 12V supply to keep the electronics happy especially at night, in the rain, when the wipers and lights are on. I suspect a contributing factor to the premature death of my last two DC-DC converters was the lack of a decent 12V battery to buffer the effects of short, sharp 12V loads.
AEVA National & NSW Branch Treasurer

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