A quick correction for you, the battery heater does function when CCS charging in cold conditions. The complaint is that charge rate is reduced when the battery pack is cold, and the heater is only 2 KW. The problem is that the battery heater shuts off around 64F pack temperature, and at that point maximum charge amps is still limited to less than 110 amps. This may seem like a lot, but the Bolt max charging amps with a warm battery is 150 amps. I think the logic was that when they set up the programming for the system, most publicly available CCS chargers maxed out at 100 amps, with a few 125 amp stations. Now with lots of 125 amp stations and 150+ amp stations becoming available they need to reprogram the battery heater to vary it's shut off point based on power available, so it stays on to a much higher pack temperature when connected to a higher power CCS station to maximize charging rate.

@WeberAuto

5 жыл бұрын

Great information! Thank you very much

@ClockworksOfGL

5 жыл бұрын

Keith McDonnell - I have no idea if your comment is true, but I’m gonna upvote you anyways.

@edwinstorz702

5 жыл бұрын

Thank you for sharing, Just my opinion, on THEY...... the thinking is, that the product is made as CHEAP as one will allow, then we, the driver will pay and relay info, making all this possible! I can be really Negative about the issue for good reason, though what good will that do?

@dunckeroo1987

5 жыл бұрын

Makes sense -- most households only have a 100 amp service for 240 volts. So one might want a 200 amp service to run the pure DC charger. A 0°C internal resistance is probably triple. Internal resistance will limit safe charge/discharge rate or charge rate in general. Pure DC charge rates will be higher than half wave DC due to internal resistance vs duty cycle of current applied. One could lessen some of the internal resistance driving issues with a design that incorporated super-capacitors for acceleration demands, but that would be a lump of about 130 super-capacitor cells $$ :) The future would seem to indicate a fuel cell car might be more practical anywhere warm weather and cheap hydro-electricity are absent. It is a moving target for the tax-man however that tends to stifle running cost advantages.

@MrTsolar

5 жыл бұрын

I was going to comment about what you could do if the car won't quick charge. My Bolt will run the battery heater while powered up, ready to drive. So, if the Bolt won't quick charge because the battery is too cold, one could let the car sit while powered up and it will heat the battery. Although, if you are quick charging, you have likely already been driving for a while and the battery should be plenty warm. I'll have to find a way to take measurements, but mine only seems to heat the battery to a tad above freezing. Heating all the way to 64 F would take way too much energy if the car isn't plugged in.

heres a man that really does deserve the title "professor"

Thank you very much for taking the time to produce these videos. They are an amazing resource and fascinating to watch. This channel is an invaluable resource for anyone looking to learn more about emerging electric vehicle technologies.

@WeberAuto

5 жыл бұрын

Thank you!

@ahmadkamali8547

5 жыл бұрын

Nonsense.. for that reason no one gos for the US productions People runs to one sight..only best n economical.. no more complications

@jimbos1567

4 жыл бұрын

@@ahmadkamali8547 This reply speaks for itself

@MrGirowinner

3 жыл бұрын

I found you sir!

@khalidmahmood7708

2 жыл бұрын

you are great

THANK YOU for making these!! I have been looking for many months for a long-form tear-down of a modern EV and could not find any. I thought they didn't exist until I stumbled on yours. This Bolt EV series is EXACTLY what I've been looking for. On top of that, you are EXCELLENT at explaining these things in a methodical, straightforward way. Thank you again, I really appreciate this resource.

Thank you for explaining these systems so clearly and thoroughly, that most technically inclined folks can understand it. Very much appreciated, Professor!

Prof. Kelly & team - a great video series. Your presentation from puzzle pieces to a complete system overview running through stages, is just fascinating. It brings utmost clarity. Thank you for taking out time to make this series.

The smile at 0:29 when you say "we have disassembled *everything* " says it all! Thanks for sharing your hard work and passion for this project!

@WeberAuto

5 жыл бұрын

Thank you, it is fun!

Thank you Professor John Kelly! I come from a long line of mechanics in my family, my father taught me to remove, disassemble, and reassemble automatic transmissions when I was 10 years old. I have always been fascinated by the mechanics of motor vehicles. You are a brilliant person I really appreciate all of the videos I have watched. Now that I have a Bolt EV, I am a bit more up to date on the workings and engineering because of your wonderful instruction. Best to you !

I am always excited to listen and watch these videos, thank you professor!

@WeberAuto

5 жыл бұрын

Thank you!

👏👏👏, as a “GM world class “ & ASE master technician I must say that you are a selfless teacher ! If I lived on the other side of the country ,I’d sign up to that facility just to watch you live ! Very impressed 👏👏👏👏

4 years after originally watching this and watching again because I just bought a 2023 Bolt EUV! Thanks again Prof. Kelly!

I'm learning so much about my new car watching these videos. I bought a 2020 Bolt with slightly more range but since it wasn't a full model change, I'm sure most of this info is similar if not the exact same minus the battery chemistry upgrade from 57kwh to ~66kwh. Thank you for all the time you put into detailing this fantastic car.

Thank you for the explanation of the under hood components! As a Bolt EV owner, I am really enjoying this series. I’m definitely looking forward to the motor tear down.

@WeberAuto

5 жыл бұрын

Thank you!

Fantastic insight & gives an inclusive look on the DC and AC wire harness connections with all the necessary equipment in sync.. very knowledgable indeed.. thank you, professor!

Again, thanks to Weber State and Prof Kelly for this outstanding series. I am trying to watch all of them as a wealth of clearly presented, factual information is available!

@WeberAuto

5 жыл бұрын

Thank you very much

As a Chevy Bolt EV owner this video is very interesting, thanks for producing it!

@WeberAuto

5 жыл бұрын

Thank you!

@REVNUMANEWBERN

5 жыл бұрын

Seems I read somewhere they are going to STOP building the Bolt, is this correct?

@WeberAuto

5 жыл бұрын

@@REVNUMANEWBERN Not at all, they are going to stop production of the Volt. The Bolt EV production is actually increasing.

@Jasona1976

5 жыл бұрын

Numa Newbern no. The Volt is to be discontinued

Looking forward to the disassembly of all those components, great video as usually!

@WeberAuto

5 жыл бұрын

Thank you very much!

Good afternoon Professor John, I just want to say how lucky your students are to have a teacher like you, I would stay in class for 24 hours to study all the information you can give, you were dizzy from my years of study in technical college in Republic of Moldova. I would like to be a student again and I would like to have a teacher like you. Thank you Kind regards Arty

Your Content is GOLD. Loving the new EV/Hybrid cars you're having on the show.

@WeberAuto

5 жыл бұрын

Thank you!

I absolutely love what you are doing! Please continue!

@WeberAuto

5 жыл бұрын

Thank you!

My wife just bought a Bolt. Fantastic to watch this and get an idea of what all that stuff does. Thanks!

@WeberAuto

5 жыл бұрын

Excellent car! congratulations. My son just bought a 2019 and loves it.

Thank you professor for this great demo, I never thought there is that much technology in an electric vehicle

@WeberAuto

5 жыл бұрын

Thank you!

I did not have an interest in hybrids, UNTIL I started watching your videos about them. I find the technology fascinating, and your presentation style makes it easy to learn. You are a wonderful teacher. Thank you for sharing.

@WeberAuto

5 жыл бұрын

Thank you very much!

@galehess6676

5 жыл бұрын

You need to enroll in wherever he is teaching. There is a need for mechanics ready for an onslaught of routine service and the occasional trouble-shooting. Get in now, and work up to shop and dealership manager and retire with a nice cushion and a beach house.

@deeremeyer1749

3 жыл бұрын

The Bolt is not a "hybrid". It is a plug-in EV and one "years ahead" of every piece of shit Tesla in engineering, technology, durability, reliability and overall "value".

@UmmYeahOk

3 жыл бұрын

@@deeremeyer1749 one would hope it’s “years ahead” of Tesla, considering how long ago GM had been researching and developing EVs. GM had been making EVs since at least 1996

Excellent rundown.... cant get enough.... looking forward to the remainder of the components... Thank you..

@WeberAuto

5 жыл бұрын

Thank you!

Just BIG Thank you for educating, professor Kelly!

Thanks Professor Kelly for another great engineering video. I was wondering if/when you would get back to the Bolt EV. Thank you to you and your students that take the time to share this technical detail with the average audience. As an engineer myself, greatly appreciated. I have no doubt that if the DC fast charging conversion can be done, you'll figure it out. As you have a lot of resources, and drive to solve these interesting problems. Tempting us with what appears to be a Model 3 in the background is amazing. From what I understand Tesla is kind of holding all service information close to their hearts. I'm always interested to see your next video.

@WeberAuto

5 жыл бұрын

Thank you very much! That is a new model S

I love your videos! You are a true expert and I highly respect and regard your teaching programs. I have learned a lot from your videos. Thank you so much for your hard work and effort putting these together for us.

As a new Bolt Owner and Geek EE:I love these videos: Mr. Kelly ROCKS!

This is one of the best tutorial series I have ever found on UT. Much learned on every single one posted. New technology is hard to keep up with, but this nails it totally with this series. Keep up the great work.... Highly recommend to backyard mechanics (or wanna be's).

@WeberAuto

5 жыл бұрын

Thank you very much!

@deeremeyer1749

3 жыл бұрын

It's hardly "new technology" unless you're a Teslatard that believes Elon the Icon "invented" plug-in electric vehicles. Pretty much all of that "new technology" dates back decades to the GM EV-1.

This is a fantastic video! I came in knowing nothing of how EVs are built and came out feeling much more confident.

@WeberAuto

Жыл бұрын

Thank you

Excellent video!!! I just bought a 2023 Bolt EV 2LT and this video, I'm sure, still applies to my new Bolt. I've owned a 2014 Nissan Leaf for the last year and wanted something with much more range and the Bolt meets all my needs. I use a Level 2 charger in my garage and don't expect to take extended trips in the Bolt (at least for now) so won't have to deal with Level 3 fast chargers. Thanks again for your effort making this video.

I think you are doing awesome job. You are teaching all the next gen cars and trucks. William morfield

I really like this guy and the way he deliver the information to you... Excellent work.

Thank you for demystifying so many things!

@WeberAuto

5 жыл бұрын

You are welcome!

Great video! Thanks for taking the time to make your very informative videos! You are a great teacher. I am looking forward to both the Bolt EV series of videos and the rest of the history of Automatic Transmission Fluid videos. I have learned a lot.

@WeberAuto

5 жыл бұрын

Thank you very much!

These videos are STILL being helpful Professor! I am having intermittent AC charging issue on my 2021 car ("Unable to charge" error), so was able to bone up on the related components watching this video. Helpful for being able to talk halfway intelligently to the dealer. The ECU is not storing a fault code so I want to persuade them to check wiring harness and connectors. Now I know where the connectors are!

@WeberAuto

Жыл бұрын

I am glad it was helpful, best wishes

@stevebakker6884

Жыл бұрын

@@WeberAuto By the way, are you aware of where the ECM unit is on the car? The car finally threw a code at the dealer, and it pointed to the ECM. Personally I think it is a loose connector or a harness that is triggering the ECM code because the charging fault is extremely random. Charges fine for months. Then won't charge, or flashes back and forth between charge and unable to charge error. I am just wondering if the ECM is anywhere near the Onboard charger module, because I want to coax them into reseating all those connectors while in there. kzread.info/dash/bejne/m6WTsqWJqa2tk9I.html

@WeberAuto

Жыл бұрын

@@stevebakker6884 The ECM is the small box right next to the 12V battery

@stevebakker6884

Жыл бұрын

@@WeberAuto Thanx!

amazing videos, learning so much. I am a test driver for an autonomous driving company and we use chevy bolts. everytime i looked under the hood, I had nooooo clue what all that, that, that stuff was. now i do.

@WeberAuto

5 жыл бұрын

Thank you! I am glad this was helpful

Dang, this was seriously interesting. Nice work!!

@WeberAuto

5 жыл бұрын

Thank you!

The content on this video is very important for me to understand electric car.Thanks professor.

@WeberAuto

5 жыл бұрын

Thank you!

Love your videos. Content that is to a depth that is refreshing.

@WeberAuto

5 жыл бұрын

Thank you!

I wish I could give multiple likes. Excellent video! I'm a career computer guy, and now I wish I could take this man's courses.

Thank you for these videos! Very informative. I have a Bolt and it’s interesting to see what makes it tick. After watching this I now appreciate that my car already has the fast charging. I had no idea it was that much different.

@WeberAuto

3 жыл бұрын

Thanks for watching!

Thank you for the video Professor. It helps me understand how the thermal management system works on my 2017 Ford Focus Electric. FoMoCo also uses 3 coolant loops. Each with it's own pump and a valve so the loops can function together or independently. The MECS (Motor Electronic Cooling System) loop cools the traction motor, TCM and DC/DC converter. The PTC (Positive Temperature Coefficient) loop heats the cabin. It has a 179F upper limit. The last loop is the BCCM (Battery Charger Control Module) and HVBP cooling and heating system. It has a chiller and battery heater (3 @ 300W). The BCCM is under the car in the tunnel where an exhaust system might be on the ICE models. The HVB is in two sections (upper and lower) the upper section is in the cargo area behind the rear seat. The lower section is under the car below the rear seat. Similar components to the Bolt....but different as well. Thanks again for your videos. Greg

@WeberAuto

5 жыл бұрын

Thank you and Thanks for your feedback

I do appreciate people like you sharing knowledge with others.me my self I dont expect dealing with an electric vehicle in the close future but to know better than not to know.God bless your hard.

You explain this complex system so clearly, it almost looks easy to an amateur like me. :-)

@WeberAuto

5 жыл бұрын

Thank you very much!

I guess I didn't realize the extent of the $750 option for DC fast charging. I'm glad I opted to get it for my 2018 as I had heard that you could not get it to down the road and now I understand why. Thanks for the video!

@WeberAuto

5 жыл бұрын

Thank you!

These videos are all fantastic, thanks, really help me understand my car.

Thank you very much for your demonstration . The best teacher.

@WeberAuto

5 жыл бұрын

Thank you!

Thanks John. Well done. I am very technically and mechanically inclined and generically familiar with these system types, but seeing and understanding them relative to EV's and studying the automotive engineering and your descriptions have made them much less a mystery and very approachable. The transition for mechanical people from petro-powered vehicles to EV's will be a significant learning curve, but know what all the 'mystery' parts do makes it easy to get a grasp on; especially since this is where automotive and other transport is headed. I would have liked to see how you removed the CV joints, at least verbally. Great editing, camera work and script. Kids in 2030 looking under the hood of a 1999 Ford pickup: "Whoa, what is that?"

Thank you for making this video. I've worked on cars all my life and recently bought a Bolt. Absolutely love the car, but I can't stand not knowing what all of those parts are under the hood!

Another fantastic video. Full of information and tips. Congratulations again.

Many thanks for sharing your knowledge with everyone professor .

Excellent video, Prof! You can tell you have a passion for this stuff. Not only all the new EV terminology already flows out of you easily but you're diving right in and modifying system to add features. It's unlikely GM removed the fast-charging option at the firmware level. I'd wager your DC connection will work. Looking forward to see that report.

@WeberAuto

5 жыл бұрын

Thank you very much!

Wow very educational .. awesome job john ... I never knew the complexity of a Ev systems

@WeberAuto

5 жыл бұрын

Thank you!

Your videos are fantastic! Thank you so much for the great work!

@WeberAuto

5 жыл бұрын

Thank you!

Thank you professor. enjoyable as always!

@WeberAuto

5 жыл бұрын

Thank you very much! More to come

Another excellent explanation! It's a technique of the future even HV batteries, in general, are still not perfect. Thank you for video!

@WeberAuto

3 жыл бұрын

Thank you very much!

That was a great overview, as a Canadian Bolt owner, I now have a better appreciation of the ‘$750’ upgrade for DC fast charging that was required to be sold in our country. There’s much more to the movement of the high voltage current than I had an appreciation for. I can’t wait until you do the Tesla now!

@WeberAuto

5 жыл бұрын

Thank you!

Thank you very much for your great Videos. I live in Hamburg Germany and I look all your Videos. There are very interesting and good to learn the technic.

@WeberAuto

5 жыл бұрын

Thank you!

Professor you inspire me to continue learning :) Thank you Buddy!

@WeberAuto

5 жыл бұрын

Thank you!

I came here from Technology Connections . Subbed!

Very interesting, thanks for all your hard work doing these great videos 👍

@WeberAuto

5 жыл бұрын

Thank you!

Fantastic videos. Thank you so much for sharing your expert knowledge.

@WeberAuto

5 жыл бұрын

Thank you!

Thanks Professor John .I have never seen one in person in Eastern Canada but things will change in the future and maybe more adaptive for Our Climate . Thanks Reg .

@WeberAuto

5 жыл бұрын

Thank you!

Wow!!! What a Fantastic! Informative! channel. Thank you so much for your effort to make these videos. Such a valuable resource in the DIY electric vehicle hobbyist.

@WeberAuto

5 жыл бұрын

Thank you very much!

Thanks John for your excellent explanation of the Bolt powertrain and electronics. The packaging seems quite modular and maybe this will give GM some flexibility for future models and economies of scale. The final drive ratio is sooo low. Wow. Thanks again for your efforts to educate and demonstrate. Your videos are so nice to have access.

@WeberAuto

5 жыл бұрын

Thank you! I was thinking the same thing. I suspect these modular components will be seen on other GM EVs in the future.

@brianb-p6586

2 жыл бұрын

That's the overall drive ratio, done in two stages, not just the final drive stage. It is typical for EVs, because the Bolt's motor speed is typical for modern EV motors.

Great vid professor. Hopefully you can tear into that Tesla behind you in the next vid. keep up the great work, all the best

@WeberAuto

5 жыл бұрын

Thank you very much!

Thanks for taking the time to make these videos. I’m always interested in learning more about EVs especially since I recently purchased a Nissan Leaf. Seems very complicated at first, but it also seems that these plugs and modules can only go in one place.

@WeberAuto

5 жыл бұрын

Thank you, They are not as complicated as they seem.

Thanks for sharing another great video. You are a great teacher ! I want to see you pull apart that Tesla !

@WeberAuto

5 жыл бұрын

Thank you!

Very useful and interesting explanation. Thanks a lot for the information

I just bought a 17 with DCFC last week. This is some really fantastic engineering, and great videos! I can see this system doubled for a pretty much any other GM SUV - ie Canyon, Terrain sized stuff, awd setup. I think GM has something up their sleeve for the big-sized trucks. This "Small-Block" then the "Big-Block" for the wider, heavier stuff...

Thank you Prof. Kelly. It is very interesting. Back at the Univ. of the Western Cape there was one lecture who drove a Prius. (2010) And of course the then Primer ("Governer") of the Western Cape also had a Toyota Prius. Since then I have seen none electric cars on our roads. From 2006 South Africa have power cuts and then a electric car will not do...

Thank you professor for your great value. I am praying for the day that there would be a break through in battery technology.

@donfout2830

3 жыл бұрын

graphene CAPACITORS??

U r sir best teacher n Explainer so thanks n best wishes my for u sir

Very clear and good explanation - thanks

@WeberAuto

3 жыл бұрын

Glad it was helpful!

Great solid explanations, thanks

Dear Professor...You are causing me a concern....I binged watched your video’s last night till 1:30 am so I had to quit till returning today...good job very thorough...and your safety regime is commendable....

@WeberAuto

3 жыл бұрын

Thank you very much

Thank you, You are the best) Please keep going this, it's so interesting and helpful.

@WeberAuto

5 жыл бұрын

Thank you!

Tank you. For spending time i wish we could have shop like yours at my school Lattc in los Angeles

What an interesting presentation. Very well done. Thank you so much. I'm a new subscriber.

I have found your videos just looking for electric car structure and architecture and I want to congratulate with you and your super interesting videos.

@WeberAuto

5 жыл бұрын

Thank you

Very interesting and useful information. Thanks a lot Professor

Another excellent video! Great explanations.

@WeberAuto

5 жыл бұрын

Thank you!

Thank you so much for these videos!

i think this is the first time Ive watched your channel. with your great descriptions and explanations i think i understand the Bolt a lot more, and subscribed to your channel. they sure have complicated the electrical systems. and i understand why with all the facets involved in all the car components to make it operate correctly. Ive worked on a few hybrids and they were pretty easy to diagnose issues. But i think these all electrics are going to take a little more time and safety to work on. thanks for sharing!

@WeberAuto

5 жыл бұрын

Thank you. Other than the on-board charger and the distribution box, most hybrids have the same components. (Inverter, DC-DC converter, motor(s), HV battery). Have a great day!

That’s a pretty good design, I’m impressed!

@WeberAuto

5 жыл бұрын

Thank you for your feedback!

Mr Kelly I like your video also I'm a master auto tech with associate science degree from Maui. I love watching you. Much ALOHA from Maui Noka Oi

Excellent clear video .Thankyou.

@WeberAuto

5 жыл бұрын

Thank you!

Bastante instructivo y educativo. Muy buena serie de videos.

@WeberAuto

5 жыл бұрын

Thank you!

Very nice, good detail, clear and concise..

@WeberAuto

5 жыл бұрын

Thank you!

Wow, great video!

Keep up great work and I'm waiting for the results of conversion to fast DC charging.

@WeberAuto

5 жыл бұрын

Thank you!

Excellent video FOLKS ! thanks very much... now i know my Bolt EV a lot MORE !

@WeberAuto

5 жыл бұрын

Thank you!

Thank you very much sir for this valuable guidance..!!

Incredible amount of parts

Thank you professor , video content was simply awesome, great content , great explanation , eagerly waiting for next episode.

@WeberAuto

5 жыл бұрын

Thank you!

Great video! You have done a great job labeling each car part much like your other videos. It must help a lot for the classroom instruction. It enables another method that some people need to learn the material. I really can't absorb everything in real-time that you speak about and have to rewind the video. I am a visual learner and the labels prevent me from having to do that as much. In my line of work, I sometimes apply strain gauges and accelerometers to metals that are dirty, oily or painted to start with and in areas that get exposed to hot and cold extremes -50 to 400 F. Before I can get any permanent adhesion it requires a lot of prep time cleaning, sanding, sometimes heating (to get the metal to sweat out any oils) so that it doesn't cause my strain gauge to lift up. I have wondered for many of your videos, how do you prep the metal that has been submerged in oil for the identification label to stick? How much prep work goes into that? Are you working on that by yourself or do you delegate it out to some of your students for extra hands on learning?

@WeberAuto

5 жыл бұрын

Thank you! It is a lot of work. I do it myself. Cleaning the surface is the key.

Great man, great job, thank you so much.

thank you, always enjoyable ...

@WeberAuto

5 жыл бұрын

Thank you

Tanks so much aprecite your big knowledge of those class.......very interesting and easy to undestendig.

@WeberAuto

5 жыл бұрын

Thank you!