After 100km, how many charge was left?
I was thinking about a 75km starting at full charge, then 30 minutes charging, again 75km, 90 minutes charging and again 75km. Would that be feasible?
75 km at off-highway speeds (~80 km/h) would use 5-6 kWh, so 15-18 kWh in total. The Empulse starts at 9 kWh, and two hours of charging would replenish 6 kWh, for a total of 15 kWh. It should be able to complete this trip at slower moving speeds (say 70 km/h) or with more time to charge (say another 90m total).
Our typical rideouts today are more or less according to the same schedule.
Has anyone real life experiences with this kind of trips on an electrical motorcycle?
Most of our rideouts are about 300-500km in total.
I'm very curious to see how we could make this feasible. Especially how I could plan the charging times so I don't have to hold the gas burners which are with me.
Hi Blue Thunder,
The type of trip you're describing is IMO pretty typical, and I think electric motorcycles will see relatively slow adoption until they can handle these type of trips handily.1. Trip to the meeting point (20km to 120km from home) on highway
45 minutes waiting for the others
On highway usage will vary from 75-100+ Wh/km depending upon speed, meaning that you will use anywhere from 1.5 kWh to 12 kWh.
To fully replenish in 45 minutes you would need 2-16 kW of charging power, depending upon the trip in question.2. first part of 60km to 100km or 2 hrs
30 minutes stop to get a drink
With a moving average of 30-50 km/h, you're probably looking at around 80-100 Wh/km so will need to replenish 5-10 kWh. To fully replenish in 30 minutes you need 10-20 kW of charging power.3. second part of 60km to 100km or 2 hrs
60-90 minutes lunch break
Same 5-10 kWh, but 60-90 minutes for lunch means that you can replenish at a slower rate between 3-10 kW.4. Last part of 60km to 100km or 2 hrs
Same 5-10 kWh. Presumably the group trip is over at this point, so a longer stop to replenish would be more acceptable.5. Ride home (up to 120km from home) on highway
At 75-100+ Wh/km, this would consume 1.5 to 12 kWh.
At the conclusion of the group ride - before heading home - this type of trip could expect to consume anywhere from 16 to 42 kWh.
You have approximately 2.5 hours blocked out for potential charging opportunities, prior to departing for the ride home.
The Empulse has about 9 kWh of energy onboard, and a 3 kW charger could supply an additional 7.5 kWh over 2.5 hours for a total of 16.5 kWh. It would barely be capable of doing the shortest of the rides you describe (20 km highway, 60 km @ lower speeds, 60km @ lower speeds, 60 km @ lower speeds = 200 km total) but would need additional time to charge for the longer rides.
Increasing the charging power to 6 kW would bring the total trip energy up to around 24 kWh, which would be capable of doing slightly longer trips (300 km at lower speeds or 200+ km with faster riding).
As onboard energy and charging power scales up further - say to 15 kWh and 15+ kW - then even the longest of the trips you describe become trivial. We have the technology to do this today, but the primary blocking factor is the limited rollout of quick charging infrastructure.
As an example: the largest 2014 Zero S bike has 12.5 kWh energy onboard, can charge in an hour with a compatible CHAdeMO charger (12+ kW). It would be able to do most of the trips you describe, supposing that CHAdeMO chargers were available at each of your charging stops.. which they probably are not.
I suspect within a couple of years you will be able to do these sort of rides on a relatively affordable electric motorcycle with a small amount of planning. The electric motorcycles that are available in production today can complete individual legs of the trip, but without more powerful third party chargers will need additional time to charge.