Thoughts about a crash/impact circuit breaker?

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Martijn
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Thoughts about a crash/impact circuit breaker?

Hello,

I'm converting my Mercedes c107. To drive it I need to have it safety tested at the TuV center in Germany. They need to know if the car is safe in a crash and nobody will be the victim of high currents.

In a crash I most likely will not have the time to use the manual circuit breaker. I think I need an automatic one, something like an accelerationswitch, which will disconnect the circuit at strategic places if the car slows down way too fast.

Is there maybe already a solution out there? Has anybody some hints?

Many thanks in advance!
Martijn

antiscab
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Re: Thoughts about a crash/impact circuit breaker?

Hi Martijn,

could idea to use a crash sensor.

there is this:
http://www.evworks.com.au/index.php?product=SWI-FCO

combine this with break-up contactors (a contactor every 48v), you EV will be electrically safe in the event of a crash.

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst 2 x TC Charger & MC
conversion

Martijn
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Joined: Sunday, August 16, 2009 - 13:13
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Re: Thoughts about a crash/impact circuit breaker?

Hoi Matt,

thanks for the info! But is 8 - 15 G enough? I am not an expert on gravity and I do not know how many G's arise when driving over a hole in the road. There are probably some Newtonian formula's I have to look up.

I have 10 12V batteries, so I will apply 2 more breakers. The TuV should be satisfied, i hope.

Martijn

Martijn Pieffers
pieffers [at] gmail.com

antiscab
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Last seen: 6 days 15 hours ago
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Re: Thoughts about a crash/impact circuit breaker?

IIRC,

that part is actually a ford part used in their current cars.

an impact thats more than 8G is usually sufficient to write a car off.
a pot hole certainly wont set it off

Matt

Daily Ride:
2007 Vectrix, modified with 42 x Thundersky 60Ah
Vectrix 60Ah Lithium Tyres Fuel Registration Insurance cycle analyst 2 x TC Charger & MC
conversion

Martijn
Martijn's picture
Offline
Last seen: 4 years 5 months ago
Joined: Sunday, August 16, 2009 - 13:13
Points: 5
Re: Thoughts about a crash/impact circuit breaker?

A tipical 'aha' moment. Until now I did not realise that an Inertia Switch does that.
A day not learned...

Thanks,
Martijn

Martijn Pieffers
pieffers [at] gmail.com

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