PV1
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Re: EVSE Upgrade

Mon Sep 26, 2016 1:02 pm

Nevermind. There was a problem with that particular outlet and the Tesla vehicles. They all refused to charge from their mobile connectors, even though my i-MiEV and a LEAF both charged just fine.

The cord must've been too long :roll: .
"Bear" - 2012 Diamond White Pearl ES with QC - 2/21/2013
Solar-powered since 10/10/2013

"Koorz" - 2012 Cool Silver Metallic ES with QC - 1/5/2015

Driving electric since 2-21-2013.
3 years with the i-MiEV and loving every mile!

Jiminy
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Location: San Antonio, Tx

Re: EVSE Upgrade

Sun Feb 05, 2017 1:15 pm

Hey y'all,

If anyone is interested I have solved the issue of converting the stock US/Canadian market Panasonic EVSE that comes with the 2012 Mitsubishi I-MiEV and the 2011 and 2012 Nissan Leaf. It involves simply swapping out the 120v AC power supply to a wide voltage unit and removing a small capacitor on the pcb and then changing the input plug to whichever 240AC receptacle you have access to.

I have a Leaf, an I-MiEV, and two Volts that charge beautifully with the modified EVSE. I simply copied the work and sourced the same power supply contained in the two EVSEupgrade-modified units that I own. Parts cost including the input plug cost around $22USD.

Jim

bennelson
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Re: EVSE Upgrade

Sun Feb 05, 2017 2:01 pm

Hi Jim,

I'd be interested in doing exactly what you did.

Do you have a link to a detailed description of what you did and where to get the parts?

Thanks!

-Ben

Jiminy
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Location: San Antonio, Tx

Re: EVSE Upgrade

Sun Feb 05, 2017 6:10 pm

Ben,

I don't have a DIY manual yet. I have shot many videos for other automotive things and will try to get one in the can within two weeks. The general jist is to open the case, remove the 120V transformer with it's two white electrical plugs and swap in a Recom 21000128 from Digikey.com. Cutting off the two plugs and soldering the four wires to the cut pigtails is all you really have to do. Just be sure to use correctly sized 1/8" or 3/32" heat shrink to keep everything safe. Do NOT use wire nuts. The red POSITIVE wire for the DC output from the Recom power supply goes into the position on the smaller plug that is CLOSEST to the AC input plug. A picture of this detail is posted in the next post.

I went as far as sourcing the JST plugs to make it perfectly plug and play along with the correct receptacles. Those part numbers are below. This method requires you to have the proper crimping pliers and dies which not too many people have. Plus, the 18AWG red and black DC output wires from the Recom power supply are too large a gauge to crimp neatly onto the tiny receptacles for the DC input plugs so I soldered the receptacles on. It took a while to figure out how to solder them on and keep the union small enough to be able to slip into the small white plastic housings. Cutting off the plugs with an inch or two of wire and soldering them to the Recom power supply is the best way to do this mod.

Power supply: Recom 21000128 (RACD03-350) http://www.digikey.com/products/en?keywords=21000128

Here are part numbers ONLY IF you want make a plug and play assembly which is not necessary in my opinion:

DC output metal crimp-on terminals: SXA-001T-P0.6 (2 required per evse, Digikey p/n: 455-1904-1-ND)
DC output 2 position JST plug: PXARP-02V (1 required) special order from JST
AC Input metal crimp-on terminals: SVH-21T-P1.1 (2 required per evse, Digikey p/n: 455-1133-1-ND)
AC Input 3 position JST plug: VHR-3N (Digikey p/n: 455-1184-ND)

Jim
Last edited by Jiminy on Sun Feb 05, 2017 10:10 pm, edited 2 times in total.
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

Jiminy
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Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Sun Feb 05, 2017 8:01 pm

Below is a picture of two I-MiEV Panasonic evse next to each other with the stock, unmodified one at the top and the EVSEUpgrade one at the bottom.

On the lower evse, the arrow in the middle is the spot where the round varistor was removed by EVSEUpgrade. The arrow at the lower right is showing the correct position of the POSITIVE red wire from the RECOM power supply. EVSE Upgrade soldered the positive and negative wires to the pins on the board which is less than desireable. I would just cut the stock wires about an inch from the plug and solder the wires to the red and black output wires of the RECOM power supply instead. EVSEUpgrade also fashioned a strap out of light grey plastic to hold down the RECOM power supply but I used bathroom caulk instead to glue it down the evse I modified. (The evse I modified is not shown in this picture.)

i-MiEVevsejpg.jpg
i-MiEVevsejpg.jpg (377.37 KiB) Viewed 417 times


Jim
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

kiev
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Location: The Heart o' Dixie
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Re: EVSE Upgrade

Mon Feb 06, 2017 7:56 am

Thanks for sharing the info and pictures, that is a great DIY.

What is the voltage rating of that small fuse--did it need to be changed for 240 vac also?

So the transformer is just a AC step-down, from whichever supply down to about 21 vac, then the potted board has some sort of ac-dc conversion to drive the logic and contactors circuits.

Wonder what's the strategy of removing the varistor?
kiev = kenny's innovative electric vehicle

Jiminy
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Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 06, 2017 8:02 am

The fuse was not changed on the two EVSEUpgrade units I personally own so I did not change the fuse on the evse I modified. It is probably a 250V AC fuse.

It is curious that the stock transformer outputs 4V AC to power the board but the power supply which is used to replace it outputs 15 VDC. Works fine...

Jim
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 06, 2017 8:35 am

I wanted to mention that the 2011-2012 Nissan branded EVSE and the 2012 Mitsubishi branded EVSE are identical devices. If you have an opportunity to buy a cheap 2011-2012 Nissan Leaf EVSE (p/n: 29690 3NA0A ONLY) or 2012 Mitsubishi EVSE on Craigslist then you should buy it, convert it and either use it yourself or sell it back on Craigslist to someone who needs a Level 2 EVSE. Don't sit on it! You could also sell it to me and I can convert it. I have made providing inexpensive EV charging a personal goal. We need to work together to make this as easy and as cheap as possible.

Jim
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 06, 2017 8:57 am

This is a picture of the EVSE I modified. I chose the plug and play method cause it posed a challenge to me. I don't think it is necessary to do it this way. When I shoot my YouTube video I will just splice the input and output wires of the RECOM power supply to the pigtails of the stock transformer.

296903NA0A.jpg
296903NA0A.jpg (316.47 KiB) Viewed 375 times


Here are the power supplies I made ready in addition to the one above. I'm just waiting on the next good Craigslist ad for a cheap Level 1 EVSE:

EVSEproject.jpg
EVSEproject.jpg (456.52 KiB) Viewed 375 times
Last edited by Jiminy on Mon Feb 06, 2017 12:13 pm, edited 1 time in total.
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

Jiminy
Gold Member
Posts: 34
Joined: Mon Oct 28, 2013 6:51 am
Location: San Antonio, Tx

Re: EVSE Upgrade

Mon Feb 06, 2017 9:30 am

Here is what I used for the input plug. It is a Legrand Pass & Seymour L6-20P plug for $11.87 at Home Depot. This brand of connector is built very well and is easy to install. I was lucky and had an unused 240V outlet in my garage. I installed a L6-20R receptacle since it was plenty of amperage for the 13 amp EVSE. If I had to do it over I would have chosen an L6-30R since the available wiring adapters available on EVSEUpgrade all have a L6-30R on one end.

Most garage outlets will be dryer outlets and will use a 10-30 or 14-50 receptacle. I am only showing my L6-20P since it is what I have. Since the stock EVSE 5-15P is a screwed on Leviton plug it is very straightforward to change it to whatever wall receptacle you have. Please understand that you DO NOT have to change the input cord on these EVSE to switch to Level 2. The 12 AWG input cable is the same gauge as the output cable.

L6-20P.jpg
L6-20P.jpg (267.68 KiB) Viewed 374 times


L6-20Pexposed.jpg
L6-20Pexposed.jpg (244.89 KiB) Viewed 374 times
2012 iMiEV SE
2011 Nissan Leaf SV
27 Schott 240's feeding them

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