CT scans of BYD car components. BYD is fully vertically integrated at a level unseen since early 20th-century Ford.
Animats 32 minutes ago [-]
Nice.
Those are small parts, though. The interesting part is the E-axle. BYD builds a unit with an integrated motor, differential, axle, and wheel hubs. That, plus an electronics box and battery, is the power train. This simplifies vehicles considerably.
There are E-axle teardown videos. There's no big secret about how to do this. Copying this is hard for Detroit, because they have a huge investment in "engine plants".
With this design, BYD doesn't need standalone engine plants.
Tesla ought to be doing this, but they're into performance, not cost. They want to put two or four motors in a car. BYD does make supercars, to show off, but their volume products are reasonably good cars with E-axles and lithium iron phosphate batteries, which work fine. (It's not clear that Tesla is even into car design at all any more, but that's another issue.)
Detroit ought to be doing this, but they insist on making electric cars that are modified gasoline cars. Ford has an electric Mustang, an electric F-150, and an electric Transit. Chrysler doesn't even make cars any more, just one minivan. GM has a good Bolt now, which they are killing to appease Trump.
joe_mamba 26 minutes ago [-]
>This simplifies vehicles considerably.
On the contrary, this much integration makes repairs nearly impossible, meaning you have to swap the whole thing (for a lot of $$$) when something small inside it inevitably breaks.
Check out the articles published by EVclinic that cover such cases.
Aftermarket EV repairs are already big business due to how difficult and expensive the OEMs make it.
mnahkies 5 minutes ago [-]
I don't have so much knowledge about EV repairs, but I got burnt by this on ICE cars already - had a car fail a regular fitness test on suspension bushes, they weren't replaceable without replacing the whole arm(s). What should've been a $40 part was being quoted as more than the cars value.
(I'm not sure if there was a way around this, there may well have been but I had other things going on and sold for scrap)
HPsquared 22 minutes ago [-]
The eternal conflict between "design for manufacture" and "design for maintenance".
cyberax 4 minutes ago [-]
Why would it be less repairable? Power electronics are still modular and are easily swappable. Mechanical parts are more integrated, but they so simple that they can last for decades.
And once they give out, you can just replace the whole unit for maybe $2000.
rwmj 11 minutes ago [-]
There's a reason everyone calls them mobile phones with wheels.
Edit: I agree with you and upvoted your comment which I feel was unfairly downvoted. But economics are going to win here, only a tiny fraction of the user base of cars (or phones) tinkers with them.
lowbloodsugar 9 minutes ago [-]
Most of those stories are 1/ crashes and 2/ hybrids. Again, with rare exception, manufacturers are just making gas cars with EV power trains. Tesla and BYD are making next gen transport. Are you old enough to remember when TVs broke so often that TV Repairman was a job? One day we will look back on car mechanics the same way.
I do remember the visceral joy of trying to keep a supercharged Camaro on the track, but those memories are overwhelmed by the terror of “what is that noise”. Now I drive a Tesla that accelerates faster than that Camaro, handles better, and hasn’t been to the shop once.
If I win the lottery I will buy another Camaro and a Corvette and I’ll work on them for fun, and kids will look at me the way I looked at old men who take care of antique steam engines and traction engines and take them to fairs. That sure is a lot of noise and smoke and doohickeys for very little speed and power!
embedding-shape 39 minutes ago [-]
> This prismatic cell is NOT a Blade, but it does share the same chemistry.
Kind of surprised that the part that is perhaps the most "BYD" of the entire car, isn't actually the same cell that the BYD Blade batteries use, which was what I was most excited about seeing :(
16 minutes ago [-]
spiral09 33 minutes ago [-]
[dead]
Rendered at 21:37:40 GMT+0000 (Coordinated Universal Time) with Vercel.
Actually, yes, we would: https://www.kmoser.com/ctscan/
Those are small parts, though. The interesting part is the E-axle. BYD builds a unit with an integrated motor, differential, axle, and wheel hubs. That, plus an electronics box and battery, is the power train. This simplifies vehicles considerably.
There are E-axle teardown videos. There's no big secret about how to do this. Copying this is hard for Detroit, because they have a huge investment in "engine plants". With this design, BYD doesn't need standalone engine plants.
Tesla ought to be doing this, but they're into performance, not cost. They want to put two or four motors in a car. BYD does make supercars, to show off, but their volume products are reasonably good cars with E-axles and lithium iron phosphate batteries, which work fine. (It's not clear that Tesla is even into car design at all any more, but that's another issue.)
Detroit ought to be doing this, but they insist on making electric cars that are modified gasoline cars. Ford has an electric Mustang, an electric F-150, and an electric Transit. Chrysler doesn't even make cars any more, just one minivan. GM has a good Bolt now, which they are killing to appease Trump.
On the contrary, this much integration makes repairs nearly impossible, meaning you have to swap the whole thing (for a lot of $$$) when something small inside it inevitably breaks.
Check out the articles published by EVclinic that cover such cases.
Aftermarket EV repairs are already big business due to how difficult and expensive the OEMs make it.
(I'm not sure if there was a way around this, there may well have been but I had other things going on and sold for scrap)
And once they give out, you can just replace the whole unit for maybe $2000.
Edit: I agree with you and upvoted your comment which I feel was unfairly downvoted. But economics are going to win here, only a tiny fraction of the user base of cars (or phones) tinkers with them.
I do remember the visceral joy of trying to keep a supercharged Camaro on the track, but those memories are overwhelmed by the terror of “what is that noise”. Now I drive a Tesla that accelerates faster than that Camaro, handles better, and hasn’t been to the shop once.
If I win the lottery I will buy another Camaro and a Corvette and I’ll work on them for fun, and kids will look at me the way I looked at old men who take care of antique steam engines and traction engines and take them to fairs. That sure is a lot of noise and smoke and doohickeys for very little speed and power!
Kind of surprised that the part that is perhaps the most "BYD" of the entire car, isn't actually the same cell that the BYD Blade batteries use, which was what I was most excited about seeing :(