how to setup a DC to DC converter

[AmpD]

Me being me and full of bad ideas, I would probably hook the solar panel to the existing 12v battery through a very conventional SCC, power a 12v-to-120v inverter from that, and use an AC-powered "charger" with appropriate output.

this is the answer imo

you need to power a 2.5Kw charger.

You have a 48v panel right now.

A 24v system can power 2500w. It can be powered with a 48v panel.

A 24v system is much less likely to shock and kill somebody than 160v setup.

A battery cannot charge and discharge at the same time.

You have been given many good ideas.

Educate yourself on all aspects of building a solar power system and you might be able to find a cost effective solution to meet your needs. You are in the right place to learn.

This thread has already shown you why a 48v panel wont charge the 144v battery by itself.

Solar energy involves a lot components. They all have to work in harmony to safely produce that “free” energy. There is both a financial and time cost involved in learning how to achieve your goal.

The cost of tuition can be much steeper if you buy a bunch of things without knowing what their function and quality levels are.

Do you need a $1200 multiplus or a cheaper brandX 3000w inverter. In the end you are the one who will have to decide what path to take.

Bonne chance mon ami!

 

[Chuck7454]

well the van isnt exactly big enoug to fit more than 1 panel.. i was thinking this 320 watt panel i found locally and it is quite large

so need an scc for it to work ? and solar panel to scc to dc to dc converter and to batteries ? the reason im not discussing all this with the alibaba guy is because they are all about business and how many units i want to buy.. and less about functionality
and if you are from Quebec as well "sälut mon gros"
J'habite aux Philippines cette moment

Ok, let us do a little math. I assume you meant 144V 105Ah Battery (nominal energy storage capacity = 144V * 105Ah = 15kWh). And in Canada (northern latitude) we can estimate your panel can generate 1.3kWh - 1.6kWh per day (more in summer less in winter). So it will take almost 10 good days of Sun to charge your Van.

I am just saying this panel is quite limited for this battery. I think you would be better off with stationary mounting of the solar panels so you can have more panels and harvest more Solar Energy per day. I did a Google search for typical EV miles/kWh and saw Tesla Model 3 at 5.6 miles/kWh. So given harvesting 1.6kWh/day, that should translate to 9 miles/day, and the 15kWh battery will give a range of 84 miles. That said, I am using miles/kWh of the Tesla as it is the only data I have and I expect your Van will not be as efficient.

But I did not answer your question.

 

[ShaneC]

Teslas are one of the most efficient evs out there, I'd be amazed if the van hit 3m/kwh, that would give a 45 mile range. The solar output in good conditions would add 3 to 4 miles a day.