All you need to know is that BYD cars are good enough that the US had to effectively ban them.
CT scans of BYD car parts
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Re: CT scans of BYD car parts
#22All you need to know is that BYD cars are good enough that the US had to effectively ban them.
Potentially predicated on anti-dumping rules.
Re: CT scans of BYD car parts
#23Nice. 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…
> BYD builds a unit with an integrated motor, differential, axle, and wheel hubs
So wait, the whole axle is solid then? Like a 1960s pickup truck but with all the weight of the motor and gearbox hanging off it too?
That must give it ridiculous unsprung weight.
Re: CT scans of BYD car parts
#24> 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 :(
LFP prismatics are dirt cheap, I actually thought that was cooler -- it's rare to see a car part for a specific brand that is so close to a COTS equivalent.
Re: CT scans of BYD car parts
#25Nice. 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…
> BYD builds a unit with an integrated motor, differential, axle, and wheel hubs So wait, the whole axle is solid then? Like a 1960s pickup truck but with all the weight of the motor and gearbox hanging off it too? That must give it ridiculous unsprung weight.
it's not really like a 'live axle' from an older truck, it's more like a de-Dion style suspension (or dead axle).
https://en.wikipedia.org/wiki/De_Dion_suspension
you still see these in velocipede-style vehicles commonly.
and to your point : a dead axle is an effort to reduce unsprung weight compared to a live axle; it also lets you actually use alignment as a remediation for asymmetry issues rather than just pre-delivery straightening.
Re: CT scans of BYD car parts
#26All you need to know is that BYD cars are good enough that the US had to effectively ban them.
It's worse than that. Trump's tariffs have knee-capped North American auto companies right when they needed to be upping their game. The auto sector is tightly integrated across Canada, the U.S., and Mexico. Or was... Now there's tariff's on every part and frame that crosses a border. The American plan seems to be to put up a wall and force Americans to buy domestic while nobody else in the world buys American cars.
Re: CT scans of BYD car parts
#27> The last company to vertically integrate a car from raw material to finished product at this scale was Ford. Today BYD’s system runs all the way from the lithium mine to the port.
Both BYD and Tesla claim to produce around 75% of their components. Ford is at around 25%.
Tesla is indeed smaller in scale (cars/year):
BYD 4.6M
Ford 4.4M
Tesla 1.6MRe: CT scans of BYD car parts
#28Earlier quoted context omitted.
>This simplifies vehicles considerably. On the contrary, this much integration makes repairs nearly impossible, meaning you might have to swap the whole unit(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.
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.
>There's a reason everyone calls them mobile phones with wheels.
Which is why I'm so baffled how and why the EU has spent so much time and effort regulating batteries and charging ports for phones, but still ignores this massive issue of ease of repairability and right to repair of personal vehicles that has been plaguing car owners since the ICE days and is now only getting worse with EVs, that's costing us a lot more money than what's costing users to pay Apple to replace your cracked display and dead battery.
It feels like they just keep going for the lowest hanging fruits to score easy wins that don't impact local industry, while ignoring the entire forest behind them.
Jarvis, pull up on the central HUD how much the EU car industry spent on lobbying in the EU over the last 15 years.
Re: CT scans of BYD car parts
#29This was stated about the key: "Folded into the base is a mechanical backup key, a flat metal blade in a hinged housing." I own a BYD: this is not true. The key is not hinged; rather, the entire mechanical key pulls out when a small clip is unlatched near the top of the assembly (you can see it in the CT). I assume the circular hinge-looking mechanism in the CT is just a by product of the plastic/metal weld process.…
Having a mechanical key hidden in the electronic key fob is nothing new, it’s common on many cars.
Re: CT scans of BYD car parts
#30Nice. 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…
> BYD builds a unit with an integrated motor, differential, axle, and wheel hubs So wait, the whole axle is solid then? Like a 1960s pickup truck but with all the weight of the motor and gearbox hanging off it too? That must give it ridiculous unsprung weight.
Looks like they do in-hub motor for buses and in-differential(like everyone else) for passenger cars?