Electronics > Power/Renewable Energy/EV's

DIY / Open Source EV technology

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BMK:
Slight ramble here.. and likely there were several meetings I missed..

Are there any DIY / Open Source projects aiming at a complete, sensible sized EV that is road legal and competitive with commercial offerings eg Model 3?

It seems to me that we are dealing here with mostly mature motor / inverter tech, with very little left to differentiate auto makers in performance. They will differentiate themselves by the amount of spangly nonsense attached in the form of infotainment, cloud and driver assistance. To secure revenue, auto makers will not be able to resist the temptation to 'DRM' things like inverters or make them inextricably linked to the other junk to lock in customers for repair etc. You can bet that regulations worldwide will be moved to assist in securing this business model.

So if there was a open source project aimed at 'minimum viable' road legal EV could it succeed and where would we start.

f4eru:

--- Quote ---sensible sized EV that is road legal and competitive with commercial offerings
--- End quote ---
You cannot have all this.
There will be compromises on some of that.
But it's feasible.

Brutte:

--- Quote from: BMK on August 02, 2019, 10:37:34 am ---So if there was a open source project aimed at 'minimum viable' road legal EV could it succeed and where would we start.
--- End quote ---

So you download the open documentation/firmware/cad files, you send: step files to machine shop, bom to Digikey etc, they ship you pressed metal/components/PCBs and from there you want to assemble that and get a driveable "open" EV?

Ambitious. Any references?
Can this work in such scale?

Maybe if you want to start, start small.
Start from open design of some hardware mass product item that people need in their IC cars in millions. Like for example an open design of an oil filter, silencer, wiper blade, light bulb etc.
If that is possible in small scale then maybe at some point could be scaled up to an electric motor, battery pack, ABS module etc.

BMK:
Obviously a huge task and I am being deliberately over the top ambitious for the sake of discussion.

The main focus would be the 'EV' components.

No OEM designs an ABS/ESC module or a wiper blade. They choose an off the peg part/system which are tweaked for them usually only with the goal of making parts incompatible between car brands.

If we begn with for example the Hyundai Kona.  A vehicle that is an impressive EV, yet a directly derived from IC vehicle. How feasible is it that suitably motivated amateurs could come up with equivalent battery/motor/inverter for retrofit in a donor vehicle of their choice?

ogden:

--- Quote from: BMK on August 02, 2019, 02:50:40 pm ---If we begn with for example the Hyundai Kona.  A vehicle that is an impressive EV, yet a directly derived from IC vehicle. How feasible is it that suitably motivated amateurs could come up with equivalent battery/motor/inverter for retrofit in a donor vehicle of their choice?

--- End quote ---

This guy EV-converted VW bus: https://www.youtube.com/user/jehugarcia. Disclaimer: I do not agree to some of his claims or technical solutions. What's important - he did it. BTW youtube is full of DIY EV-conversions BMW M3 for example :)

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