3 ms·
> Nope. The lightning current won't go through the battery, it'll just melt the conductors in the charging cable. This strikes me as a direct consequence of ga
by metaphor 2y ago
> Nope. The lightning current won't go through the battery, it'll just melt the conductors in the charging cable.
This strikes me as a direct consequence of galvanic isolation provided by isolation link stage in prevailing architectures, something the article proposes to eliminate.
I'm struggling to imagine how a magnitude of surge energy sufficient to "melt the conductors in the charging cable" while directly coupled to a charger and without galvanic isolation leaves an EV's battery unscathed in such an event. What exactly isolates/protects the battery again?
- cyberax 2y agoLightning is still electricity. It technically follows _all_ the paths, but most of the current will go through the low-resistance paths. For the battery to explode, the lightning will need to cause a potential difference across its terminals. But why would it? The paths _around_ the battery cells (through the battery and car body) have much less resistance. The conductors in the charging cable can melt, because the path from the car, though the cable, and through the EVSE body to the ground is another relatively low-resistance path.