CT scans of BYD car parts

BYD engineering and CT findings

• CT scans covered BYD battery cells, key fob, and small modules; some were disappointed the iconic Blade cell pack wasn’t scanned, only a similar LFP prismatic cell.
• Commenters found the LFP prismatic cell interesting because it’s close to cheap COTS parts; discussion of internal “rippling” and how it may affect degradation.
• Some technical nitpicks: description of the key mechanism was reportedly wrong for at least one owner’s car; others note key designs can vary by market.
• Several people saw the writeup as “content marketing” for the CT company, but still valued the visualizations and engineering commentary.

Vertical integration, e‑axles, and design philosophy

• BYD is praised for deep vertical integration, from lithium mining through batteries, motors, and e‑axle units; compared to early Ford and, to a lesser extent, Tesla.
• Their integrated e‑axle (motor + differential + axle + hubs) is seen as dramatically simplifying the powertrain and reducing cost, especially with LFP chemistry.
• Others push back that such integration can hurt repairability and lock owners into expensive unit-level replacements.

Repairability vs. manufacturability

• Ongoing tension highlighted between “design for manufacture” and “design for maintenance”; many examples from both EVs and ICE cars where small failures require large assemblies to be replaced.
• Concerns about proprietary parts, DRM’d ECUs, security-paired modules, and custom components that block aftermarket repair.
• Counterargument: if integrated units are reliable enough and produced in high volume, swapping entire modules can still be economical, similar to used Honda engines.

Chinese EV competitiveness and protectionism

• Strong consensus that Chinese automakers (BYD, others) have rapidly improved quality and value, with success stories from Australia and Europe.
• Many argue US/EU tariffs and de facto bans are protectionist responses to uncomfortably strong competition; others worry about Chinese subsidies and “manufacturing attack” strategies.
• Some predict US market would adapt and benefit from cheaper, better EVs; others think local industries would be crushed on a level playing field.

Chinese manufacturing quality and politics

• Repeated theme: China can produce both junk and world‑class products; quality is mostly a function of what buyers specify and pay for.
• Debate over broader issues: social credit, surveillance, past safety scandals, and whether Western criticism is hypocritical given domestic problems.
• Thread shows a clear split between enthusiasm for Chinese engineering/economics and skepticism rooted in political and human‑rights concerns.