Amnon's EV-30x

Post up a thread for your EV. Progress pics, description and assorted alliteration
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amnonholland
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Real Name: Amnon Holland
Location: Sydney
AIM: 82 Wandeen Rd Clareville
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Amnon's EV-30x

Post by amnonholland » Wed, 02 Jun 2010, 22:40

Hi all

Today i picked up my dc 11kW motor form the port.
There are some pics of of the motor and my progress on the conversion in the photo album below.

EV conversion Album
http://picasaweb.google.com.au/amnonhol ... Conversion#
http://picasaweb.google.comamnonholland ... 2014653906http://picasaweb.google.comamnonholland ... 7666858274http://picasaweb.google.comamnonholland ... 4420577730


Conversion specs,
-Eunos 30x with
- 11kW motor (with 2 separately excited fields, therefore regen ability), 144V with 400Amp max controller
- 12 75Ah Vision AGM batteries
- Custom dashboard with volt, ampmeter and digital speedo
- 5 speed gearbox with no clutch
-will only be a 2 seater
Last edited by amnonholland on Wed, 02 Jun 2010, 12:43, edited 1 time in total.
Amnon

amnonholland
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Amnon's EV-30x

Post by amnonholland » Tue, 13 Sep 2011, 16:31

Ev-30x has been run on the lead acid batteries but they only provided a few km's range due to their poor condition. The car accelerated reasonably well for the amount of weight, and i have only had it running up to 60km/h so far. The project has been on the backburner for a while, but now needs to be completed. I have been working on this project with Andrew Handmer, another member of this forum who has been providing the mechanical 'know-how', so to speak. I am hoping to have the car up and running ASAP. I need to make a selection and order the batteries in the next week or so.

I have a budget of about 5-6k and am looking for lithium cells. I imagine it will be something like the LiFePO4 brick cells. The system is a 144V.

Some questions;
1) Due to the low budget is it too risky to not have a BMS?
2) It is suggested to order from china or the states?

Any suggestions on possible configurations, battery types, suggested vendors, etc from AEVA members 'up-to-speed' on lithium options will be GREATLY APPRECIATED!

Amnon
Amnon

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gholm
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Amnon's EV-30x

Post by gholm » Tue, 13 Sep 2011, 16:51

Good choice on the LiFePo, but although you physically will be able to run the cells without BMS, every manufacturer states specifically that you shouldn't, otherwise you'll void the warranty.
Also, chargers are usually controlled by BMS, so you'll otherwise need to make sure you have a system that stops your charger at the right voltage point.

antiscab
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Amnon's EV-30x

Post by antiscab » Tue, 13 Sep 2011, 21:46

The TC Chargers will work without a BMS, but still allow you to add one later.

You can run without a BMS, after a fashion.

Basically you will need to bottom balance, charge to an average below 3.6v, 3.5v is probably best.

Eventually the batteries capacities will drift, so adding a BMS later is still a good idea.


Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells

amnonholland
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Amnon's EV-30x

Post by amnonholland » Tue, 20 Sep 2011, 00:29

Thanks for the info. Looks like ill be getting the 45+ (2 spare) 100Ah thundersky cells. Ive looked around and will gonna contact this vendor soon for shipping, etc
http://www.ebay.com/itm/Winston-Thunder ... 325wt_1270

Basically the prices are 1.35$/Ah

Ill be just purchasing the cells initially and then say a few months later purchase a BMS. (i might try and build a simple cheap shunt diode and resister across each cell to reduce the chance of cells drifting.
Amnon

antiscab
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Amnon's EV-30x

Post by antiscab » Tue, 20 Sep 2011, 02:44

Be aware when buying overseas, that unless it crosses the border with a courier with in house customs (like Aust Post or DHL), you get charged 10% GST + 5% customs fee plus usually another $100 on top of that for the agent.

Importing directly sucks in small quantities :(

It's one of the main reasons most people buy batteries from within Austrlia, even though the price does look higher.
Try:
www.evworks.com.au
www.evpower.com.au
Basically Natare (IIRC, I can't remember the email address)
www.bev.com.au was selling sells at some point

There are probably other vendors aswell, those are just the ones off the top of my head

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells

7circle
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Real Name: Ken
Location: Melbourne

Amnon's EV-30x

Post by 7circle » Sun, 02 Oct 2011, 13:11

I like these cars,

If you could get some extra drive to the rear wheels "down the track" you could get some ultimo balanced cornering.

Will watch your creation with envy.

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