Definitely put it in a dry place and if you can mount it with some shock absorbing then that might be beneficial, but the frame of a vehicle typical does not move fast enough to put a lot of stress on electronics, it is more the vibrations and an EV has a lot less of those. Note that Meanwell supplies are typically spec'ed to work off AC and DC power and we have used them in large numbers in test setups for 48V power, but those do not get powered off very often, so I cannot speak about how it holds up with daily power cycling. Another thing is the current limit that is required for a charger: the Meanwells have a built-in overcurrent protection, which means that you will be running the supply at 110 - 120% output all the time. They typically also have an overtemp protection, but make sure that you are not giving them a short unhappy life by constant pushing them to the edge of their operational environment. It is relatively simple to add a small circuit to measure current and affect the 2.5V voltage reference to throttle back the supply at a lower current than its overcurrent protection limit. Hope this gives some ideas,
Cor van de Water Chief Scientist Proxim Wireless office +1 408 383 7626 Skype: cor_van_de_water XoIP +31 87 784 1130 private: cvandewater.info http://www.proxim.com This email message (including any attachments) contains confidential and proprietary information of Proxim Wireless Corporation. If you received this message in error, please delete it and notify the sender. Any unauthorized use, disclosure, distribution, or copying of any part of this message is prohibited. -----Original Message----- From: EV [mailto:[email protected]] On Behalf Of damon henry via EV Sent: Thursday, September 08, 2016 8:40 AM To: EV List Subject: [EVDL] Prepping power supply as onboard charger I am looking to upgrade my truck to lithium and I'm investigating charging options. I decided to test out a Meanwell SP-480-48. I found a brand new one on Ebay for $90. According to the spec sheet (http://www.meanwell.com/webapp/product/search.aspx?prod=sp-480) they are adjustable from 41 - 56V. This fits within the range I use on my 48V motorcyle where I currently charge to 54.6 volts, as well as half my proposed 96 volt pack for my truck which I think I will want to charge to 49.8 volts. The thought is to set the voltage where I want the pack to end up and just let it charge. I will test this on my bench to make sure I'm happy with the results. If I am happy with the results, I am then concerned with two items if I want to make an onboard charger for my truck out of two of these. First, is inrush current. It does not appear these are built to be constantly reconnected to Line voltage as the spec sheet indicates they have a typical inrush current of 20 amps on 115v AC. So I would need to design a simple inrush limiter, automated would be preferred, although a simple switch with a resistor wired across it is not out of the question. Any suggestions on simple automated inrush circuits? My second concern is that I doubt these are meant to travel. If I were to crack it open and take a look at the guts, what would be typical things to look for in order to ruggedize this for a mobile life. Would it be easier to be sure that it is mounted in a dry ventilated space with some kind of rubber mounting or to actually try to protect the components on the board itself. Damon -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20160908/fee2 7480/attachment.htm> _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA) _______________________________________________ UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub http://lists.evdl.org/listinfo.cgi/ev-evdl.org Read EVAngel's EV News at http://evdl.org/evln/ Please discuss EV drag racing at NEDRA (http://groups.yahoo.com/group/NEDRA)
