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Nissan's third generation e-POWER powertrain

170 points · 462 comments · mroche

  1. Toutouxc · · focus · HN ↗
    I used to like hybrids, and obviously series hybrids are the coolest kind of hybrids, but now that I’m driving a budget EV, I honestly don’t see the point anymore. Just get the EV and skip the awkward half-way step that inherits the most expensive and complicated parts from both designs.

    Seeing a sleek modern car pull away whisper quiet and then start the ICE 3 seconds later with a stutter and a puff of water vapor from underneath is the most schizophrenic sight, it somehow feels more dated than actual ICE cars.

    Unless you live in bumfuck nowhere with expensive electricity, zero solar power and a daily 5 hour commute, an EV will likely work just fine for you.

    1. mchusma · · focus · HN ↗
      I agree I don’t like having both engines, more to fail. BUT I could see a world where you basically have basically an EV with a smaller battery pack (150 mile range) and basically a swappable $300 generator. I saw swappable so that if anything goes wrong they just swap it for $300, and credit you back async any recovery value. Just electricity generation from it, for rare needs of longer range. I think in theory, it could be a good way to get a cheaper EV supporting rare bursts of range and low maintenance cost.

      But I’m not even sure regulators would allow such a design. Even then I’m not sure it’s worth it.

      But I am totally done with ICE car maintenance. I want nothing to do with it anymore.

      1. jakeinspace · · focus · HN ↗
        A cheap diesel/gasoline generator might do like 5kW, which is enough for overnight charging but not for range extension or powering the wheels. There were several pretty good range extended EVs (plugin hybrid with larger battery and smaller engine), like the Volt and BMW i3, those had small engines that mainly acted as generators for the battery, but with enough horsepower to at least keep you rolling on the highway. A $300 modular generator ain't quite gonna cut it.

        I believe there's also a bunch of Chinese vehicles with similar design, entirely electric drivetrain with gas generators for range extension. Most of these will need to kick in before the battery is empty so that there's some stored energy buffer available for acceleration.

        1. malfist · · focus · HN ↗
          To put it in perspective why a 5kWh generator isn't a range extender: my lightening has a range of 331 miles and 135kWh battery. If we assume a spherical cow (60mph, and I get every single one of those 331 miles), the truck buns through the battery in 5.5 hours, which equates to 24.5kWh to keep up.

          In actuality, at highway speeds I'll burn through 80% of the battery in 3 hours which equals a run rate of 36kWh. If we ran a 5kWh generator the whole time and assume perfect charging efficiency, it'd extend the time to charge by 28 minutes.

          1. MrRadar · · focus · HN ↗
            My Chevrolet Bolt actually shows me the real-time kW draw from the high voltage battery and, while it's highly dependent on driving conditions, it seems to require around 12-15 kW to maintain 60 MPH on a flat dry road using cruise control and with the climate control turned off. It's not the most efficient model on the market, but it's also far from the least; as you noted your F-150 would need significantly more energy under the same conditions.
            1. malfist · · focus · HN ↗
              The lightning is ridiculous, it weight 70% more than your bolt and is huge.

              My partner and I honestly bought it to be a whole house backup battery. My regions get ice storms and we have hundreds of gallons of aquariums we'd need to keep powered through a long duration power outage. 135 kwh of battery storage cost more than the 135kwh battery truck, so we got a whole house battery backup system with wheels and cruise control. It can backstop 80 amps for 3 days.

              1. deltoidmaximus · · focus · HN ↗
                If it were me I'd just get a whole house generator in that situation, seems like it would be a lot less than the truck with batteries or the batteries. The bonuses are I wouldn't need to replace an expensive truck with another expensive truck in the future if I didn't want to. 3 days is impressive, but I had an ice storm leave my family without power for 3 weeks once.

                It's pretty strange that 135kwh of stationary batteries are more expensive than 135kwh with a truck attached, seems like some one must be running a screw job on the storage batteries.

                1. malfist · · focus · HN ↗
                  We've had pretty poor experiences with generators in the past. A whole house generator is very expensive, especially with a transfer switch. Without a transfer switch you have to run the generator outside and route power inside through a window left ajar, which is not great when the ice storm has happened. The truck is parked in an insulated garage and is easy to route power from.

                  3 days is impressive if you're pulling maximum you can from the truck, if you pull anything less than that your time is greater. Our aquariums do not require all 80 amps. Max length power outage for us has been a week and the truck will easily last that long.

                  And totally agree about the cost of battery power banks. This was a few years ago, so things might be different now.

                  1. jodrellblank · · focus · HN ↗
                    You can't drive the truck during that week? So you need to keep a spare car for the time your battery bank isn't mobile?
                    1. unbalancedevh · · focus · HN ↗
                      Rather, for all the other time when the power is working, you can use your generator for transportation!
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