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Delayed/Time Charging

Hey folks,

As a Nissan Leaf Owner AND a Twizy Owner, it’s great to have most of our family needs met by electric cars.

However, I’d really like to figure out how to put a timer circuit on the Twizy so that I can charge at night time on cheap rate electricity.

Also, I believe setting a charger to finish timing just before I need the Twizy will prevent it sitting at 100% SOC all night, something I know electric car battery packs don’t like doing.

So far, the choices are:
-A DIN rail timer in a Rolec-style charging pod.

  • A Timer in the car (somewhere)
  • A combination of relay and Open Vehicle Monitoring System http://www.openvehicles.com/ – which would give us remote state of charge readings and perhaps other remote features with a little hard work :slight_smile:

The above may or may not also include swapping the 13A cable for a type 2 cable…

The very cheap why would be to use an Immersion type switch as that can handle the current required.
Preferably a new circuit from the fuse board via the Immersion timer to a standard 13 amp socket.

The Twizy doesn’t draw current once charged and the cooling fan switches off. Mine does draw about 20W as the Fan doesn’t always switch off, but an Software update in September will also affect the charging process and hopefully fix the fan issue.

The other thing to think about is the battery packs themselves and how best to charge them. See new thread on ZE Charging. ZE Charging

True.

My original plan stands true though. I wish there was a way to charge to 80 percent… Although I’m guessing the software in the Twizy doesn’t actually go to 100 percent. It’s just 100 percent of the battery capacity it wants you to see :slight_smile:

I nearly purchased this when I did my socket, however I plan to mostly charge the car at work, so didn’t bother

http://www.screwfix.com/p/mk-masterseal … tid=592006

Don’t: mine packed up before I’d even had time to use it!

This is close to what I am doing right now. Maybe a bit complex, but for me it’s OK. Our Twizy (with an OVMS module) is attached to a remote controllable AC outlet in the garage (FS20 controls from ELV/Conrad). I modified the OVMS client perl script (located at https://github.com/markwj/Open-Vehicle-Monitoring-System/blob/master/server/client_app.pl) to trigger the AC outlet to on/off when Twizy charging reaches 100%. The perl script is running on a raspberryPi which i’m using for various home automation tasks. For sending the RF signal to the FS20 outlet a JeeLink is used (http://jeelabs.com/products/jeelink)

[quote=“pieterjm;4317”]

This is close to what I am doing right now. Maybe a bit complex, but for me it’s OK. Our Twizy (with an OVMS module) is attached to a remote controllable AC outlet in the garage (FS20 controls from ELV/Conrad). I modified the OVMS client perl script (located at https://github.com/markwj/Open-Vehicle-Monitoring-System/blob/master/server/client_app.pl) to trigger the AC outlet to on/off when Twizy charging reaches 100%. The perl script is running on a raspberryPi which i’m using for various home automation tasks. For sending the RF signal to the FS20 outlet a JeeLink is used ([URL=“http://jeelabs.com/products/jeelink”]http://jeelabs.com/products/jeelink)[/quote]

Fantastic!
I have OVMS
I have a server
I have a pi

Lets talk;)

Also…

What I would like to do is to program OVMS to turn on a relay in the car so I can control timing that way. Thoughts?

I’m also due to get my smart things soon, so watch this space!

I would suggest you try to get the client_app.pl perl script running on your pi to see if you can get data out it. You can just download the script from github and the ovms_client.conf file in the same directory on github. I had to install some additional perl modules (hope you know how to do that).

I’ll cleanup my modified script and post it to the forum asap.

very interesting project… keep up the good work :smile:

I just documented my ‘hacks’ with OVMS, Twizy and charge control, on my website: http://wordpress.meulenhoff.org/?p=472

Best regards,

Pieter

Thanks so much for this, Pieter!

Once I have my brain in gear, I’ll give this a go. It may take a while, though! :smiley:

i think it is very nice to see such kind of details as every one know a days are trying to purchase the electric vehicles and most of the time they faced issue regarding the charging of batteries of there cars. and i have seen some very good thought full and well experienced comments as well.

I use an equally elegant (but far simpler) method to control charging. I purchased a WeMo remote controlled socket - which forms the basis for a stand alone home automation system. It can switch loads up to 13a and the Twizy plugs into it directly. You iPhone (or Android) app can then instruct it to switch on or off whenever you want. In my case, I have it set to turn on when m off-peak electric tariff commences at 0001 and off at 0729 which is more than enough.

The UK version has a 3-pin socket.

Check out the Belkin website for more (www.belkin.com/wemo)