Bosch Electric Car Motor.

Here's the article.

I like this bit " Fits in a school backpack"

http://chargedevs.com/newswire/bosch-touts-its-compact-and-flexible-electric-motor/



Bosch is singing the praises of its SMG 180/120 electric motor, a petite powerhouse that weighs only 32 kilos and “fits inside a typical school backpack” (a handy feature).

The permanent magnet synchronous motor is already used in several production vehicles, including the smart fortwo electric drive and Fiat 500e EVs, and the Peugeot 3008 diesel hybrid.

“The SMG 180/120 is the Bosch all-around solution for electromobility. It accelerates quickly over the first few meters and can be installed in electric vehicles as well as hybrids,” says Joachim Fetzer, who is in charge of electric vehicle and hybrid systems at Bosch.

In hybrids, the SMG 180/120 supports the combustion engine with an output of up to 40 kW. In plug-in vehicles, the SMG 180/120 delivers an output of 80 KW. It offers up to 200 Nm of instantly-available torque, and works at over 90% efficiency.

As is typical of electric motors, the SMG 180 includes a start-stop function and regenerative braking. It operates with only one conversion ratio, and offers flexible output speed of up to 12,800 rpm. Reverse gear is not engaged mechanically, but instead by changing the direction of electrical current.

So, how many do you want to order? But wait! There’s more: Bosch’s motor is maintenance-free, and uses no oil or coolant. It can be placed at any desired location in the powertrain, which allows a vehicle’s front axle to be driven by the combustion engine while the rear axle is driven by the electric motor. This setup offers four-wheel drive functionality, as that offered by the Peugeot 3008 Hybrid4.

No coolant ? must be due to the 90% efficiency, the motor can probably dissipate any heat generated.

Karl Stein

That's bound to generate . . . . . . . . . . revenue for Bosch.

Now if only they could make battery cells !!

Karl Stein

Deleted User wrote: »

Now if only they could make battery cells !!

Or split H2O cheaply.

Timmaay

I gather from reading up about afew diy electric car conversions before that the motor is the easy part (they tended to source old forklift motors etc), but the motor controller was a nightmare! I think the motor control knocks out all the heat also, that's what the cooling is usually needed for.

But anyways, are bosch selling them individually or what, for yourown retrofitting? I can't tell if that's what the author is implying, or if they are just dreaming ha?

Cathal Cloch

Cathal Cloch wrote: »

Or split H2O cheaply.

We could have all the hydrogen we need if they invested in l.f.t.r thorium as a much, much safer form of nuclear, and cheap.

Fuel cells are not nearly as powerful as the newest batteries, but obviously the cars win with recharge times, though Tesla say 5 min recharging isn't that far away. We're already at 20 mins to 80 %.

I think that by the time fuel cells are perfected and hydrogen can be made cheaply, batteries will have greatly improved.

Fuel,cells are not cheap and they wear out, just like batteries but batteries are getting good.

My guess is that hydrogen will find use in HGV applications, trains, planes maybe and ships. But that's a long way away.

I think a few fuel cell cars are coming in 2015 but fast chargers will be much more common by then and Ireland will have 0 hydrogen stations.

Timmaay

Timmaay wrote: »

I gather from reading up about afew diy electric car conversions before that the motor is the easy part (they tended to source old forklift motors etc), but the motor controller was a nightmare! I think the motor control knocks out all the heat also, that's what the cooling is usually needed for.

But anyways, are bosch selling them individually or what, for yourown retrofitting? I can't tell if that's what the author is implying, or if they are just dreaming ha?

Those diy electric cars usually have brushed dc motors, where as production ev have 3 phase permanent magnet motors and are much more powerful.

The fork,lift motors usually work on 48 volts which mean they need huge amounts of amps, huge cabling, huge contractors etc and current means a lot more heat. That's one of the reasons production electric cars use lethal 400 odd volts, the higher the voltage the less amps you need.

Usually the motor and controller need to be cooled but as efficiencies improve there will be less heat generated.

Bosch only deal with oem's.

Matt Simis

Deleted User wrote: »

Those diy electric cars usually have brushed dc motors, where as production ev have 3 phase permanent magnet motors and are much more powerful.

But a sizable chunk use AC motors, operating in the 120 to the 168v range. There are lots of controllers and support for using AC motors like this in DIY.
I read a couple of articles on it and its not clear if the 80Kw is peak vs continuous.. I suspect peak, which is measured in seconds.

Whats the price on the Bosch motor? Presume OEM only, but $10k?
A 32kg 40/80Kw motor is nice, but a 50'ishkg 100/150kw would be a game changer.

Matt Simis

Matt Simis wrote: »

But a sizable chunk use AC motors, operating in the 120 to the 168v range. There are lots of controllers and support for using AC motors like this in DIY.
I read a couple of articles on it and its not clear if the 80Kw is peak vs continuous.. I suspect peak, which is measured in seconds.

Whats the price on the Bosch motor? Presume OEM only, but $10k?
A 32kg 40/80Kw motor is nice, but a 50'ishkg 100/150kw would be a game changer.

Yes a lot of kit is available now that use good quality A/C motors. That can operate at those lower voltages and still perform well but you need a lot more amps and amps mean heat and heat means power loss and much more expensive electronics.

Messing with 400 volt dc for diy is dangerous, even 120 volts.

I've no idea the cost of the motor. And yes Bosch only supply OEM.

Most likely peak power but as with an ice engine, it will rarely be at peak power.

One thing about electric motors is they can take huge amounts of peak power for serious tuning, depending on heat. But you probably won't know the peak discharge rate of the battery pack, electronics etc.

There is no reason the motor couldn't take 100-150 kw with cooling. But too much heat means it's going to be more inefficient.

80 kw isn't fantastic in the weight of an ev, vw claim 10 seconds for the Golf, and something like 11 seconds for the Leaf, but youtube videos clearly show 9.5 seconds for the Gen I Leaf. It's acceleration is pretty good and being instant is especially addictive.

best thing about the permanent magnet motor is that the torque is available right throughout the rev range, so you got 100% torque until the limit of 80 odd mph.

188 lbs from 0, or 400 lbs with the Chevy Spark EV, which is supposed to be wicked off the line.