Hi, I’m Gladys and I’m in the Marketing team at
Sono Motors. Join us for a wild ride of testing! We’ll be testing test tracks with the new
SVC, driving; ins and outs, ups and downs, We’ll do some solar testing and I’ll
be conducting my own little experiment. So tune in, enjoy and see you soon! Hey everyone, my name’s Dominik and I’m
responsible for the power train at Sono Motors. My name is Markus and I’m responsible for
the Vehicle Control Unit. I'm working for Continental Engineering Services and today we
are on the system test track in Regensburg, where we're going to test your vehicle.
-Yes, exactly. We’re going to test the Sion. We’ve done so for the last week
and collected the results, and yeah.
Furthermore, we can go up to 180 kilometers per
hour here on the track, we can make sure that the vehicle doesn’t over speed. And yeah,
this is what we're done over the last week. Yeah, exactly. We tested from zero, that is, in
a state of charge up to 100. We tested all of the ranges and it’s very cold this week so we
had a little bit of winter testing as well. This is why we’re here, this is why we built
the prototype – to learn from the prototype and the longer the list is, the
better the next generation will be. -Exactly, yeah. And today Sebastian Böttger,
a community representative, is joining us for the first Sion test drive
and we’re looking forward to get some feedback! -Good morning Gladys! Hello, hello.
-Where are we going? We’re going to Roding and that’s
where our prototype is being built and now that it’s done- pretty much
done- we’re doing some testing today.
So today is solar testing. The sun
is looking decent. It’s still cold but decent. We’ll do testing on the roof.
I think it's gonna be really nice to see. Hello, we’re at Roding and we’re here to do more
testing on the SVC 2. Development told us that there is great improvements on the
functionality of the solar panels. So we’re here to check them
I’m excited, let's go. Apparently, it’s supposed to go straight back up. I’ll hold your neck and then I’ll kind of- -Oh really?
-push it quite deep into your brain. I can’t do it! Too much! -Perfect!
He just… …broke my brain! Who's had the worst reaction so far? -You, Gladys.
Really? That’s annoying. Christian that's your test.
Seems to be negative as well. Christian, hello hello.
Hi Gladys. For the viewers at home, this is Christian,
he’s a project lead on the solar electric…help me finish, please…You can start with solar
electric vehicle, but I'm focusing on the electric integration of our solar technology.
-What I said, perfect! So what brings us here today? I know I have to do some solar
testing but can you give me the lay of the land. Absolutely, so I have prepared the
vehicle and the solar integration to do some end-to-end tests today.
beautiful conditions outside, the sun is shining. It’s winter time and the sun is a
bit low but still intense enough to show the results on the screen. Ok, very nice. So, there are cells and there’s
a battery. How is that getting from A-B, from solar to battery? From A-B, of course, you need wiring. The
wiring from the panels go first, to the MCU. -MCU? -MCU is short for MPPT Central Unit. MPPT is again an acronym that is well known for
Maximum Power Point Tracking. It makes sure that the power gets most efficiently to the battery. -Ok, very cool.
-We have several body panels with solar cells integrated. Each group of cells, you need
their own MPPT to make the system run smoothly. Ok so, I know that today we're only
testing the functionality of the roof? How come? Why not everything? Well, you gotta start somewhere.
We start with the
biggest panels. They should, even in winter time, deliver enough power to see an impact, to
make the system wake up when we drive from this building outside into the sun. At the same
time, the biggest panels also involve the biggest challenges for us. A lot of mechanical stress on
the cells but we’re really proud of the result. Yeah, it's looking beautiful and I’m excited
to see how it works. I'm looking forward. Tell me more about some
technical things and some specs! One technical detail I’d like to mention today is
that we’re using half instead of full cells. You might remember from previous designs that the
solar cells were square. For this prototype, we chose for the first time, half cells.
PV industry is moving towards bigger cells and in order to be more
flexible on the body panels, to place the maximum amount of them,
and to increase system efficiency, we chose half cells for now. For increasing
the efficiency, it's done in two ways. First of all, you have more cells, they are
smaller so you have more space for more of them, and thereby you increase the voltage. We might
get to this later when we speak about the MCU in more detail, it increases
the converting efficiency. The other aspect is that you are basically
reducing the current, which might sound like less power. But if you have the product of the
voltage and current, power will be the same, but the lower current produces less losses
in the wiring to the battery and MCU.
-Okay, very efficient then! -These are three main advantages
to using the half cells. And I think they look nice! It’s like the size of an iPhone, a bit.
– A big iPhone. Can we get it in action?
Let’s go get that roof tested. I’ll meet you in there. Beep beep, you might get
hit over there. Seatbelts! Ich spreche deutsch.
Do you like Maultäschle? Nein -No Maultäschele for you?
Maultäschle… Maul-täsch-le. Oh those roll thingies with the meat inside?
-The Swabian tortellini. Yeah the pasta with the meat in, no! Hello.
I’m here today to
do my own experiment. Yes, I know that development is
doing such beautiful, hard work. They’re shedding their blood,
sweat and tears for this car, but I just need to see it for myself.
I’m here today to really test if the solar – what is it?
-Intergration… Yeah, the solar integration, if the solar
panels are really absorbing the sun and if I make my own shade will it
slow the intake of the sun? So, Christian I’m going to give you this black
Let’s do it together and a couple of times because…I don’t trust it. I can’t reach so
Christian you gotta do more! Thank you so much. -Like this? Ok, yep. thank you so much – I’ll let you do that.
I’m going to check it out for myself. I don’t want him touching the car other than this, you know,
I just don’t want that- I need to see for myself. Ok.
-Should be off, isn’t it? -Yeah! It is!
So, it’s been sitting out in the sun for about an hour and
we just covered it with this black blanket, representing shade in my experiment, and it’s
gone to 0 watts.
Ok, so things are going well, but now I want to see you take it off
slowly- just slowly. Expose a little. -Mhm let’s see. -The front part…- Ok you’ve exposed half and I’m still
waiting Christian. Oh – 40 – 75 watts, 76 -So fully uncovered now.
-113, 114… And it’s not 200 because we’re
not what, because it’s winter? -Because its winter and the sun is low-
-The sun is low ok, ok. Beautiful, ok, so um. Even with creating my own shade, the roof is
fully functional and my experiment is a bust. So, Christian just give me the
blanket, this is embarrassing. I thought it wasn’t going to
Cool. Um, thanks Christian, you’re doing great work. Keep it up, development
is loving it. I’m just going to go back to Munich. -Thanks for being here!
-I shouldn’t be into sci- Not a scientist. Yeah, so right now we have almost 470 watts per
square meter. That’s the irradiance from the sun, in that position for the panels,
Max is holding the sensor. If I press those buttons, I get the
immediate results, This is showing 24 watts for the smallest panel. As expected. Yes,
that’s only one panel. Should be the smallest. -I’m not a scientist. Hey everyone, thanks for watching. I hope
you enjoyed yourselves and learned something. I definitely enjoyed myself and learned
a lot of things.
We, as you remember, were able to see the test track and how the car
handles. We saw the solar panels and how the roof interacts with the sun and how it’s visualized
on the infotainment system. Those were awesome results, we saw what we needed to and – alright
alright alright. Until next time guys see you. Do I sit here? No,
It just was natural. Masks. Indoors, in cars..