Yes.
And galvanically isolated connections outside the box.
No BMS sense wires can go to a "central BMS", since voltages above 60V are prohibited after a crash.
Lots of DIYers in the past have ignorantly run sense wires out of the battery box to an external BMS, including famous Irish EV hackers. Many of those wires have hundred(s) of volts on them - all the time, even when the key is off.
That DIY legacy needs to be stopped in its tracks, since there may be people risking their lives to save yours and you're building a contraption that will electrocute them for trying.
Nothing goes outside the battery box that cannot be fully disconnected if it exceeds 60V.
So, no Matt, it's not "no". All you need is one short to chassis of one wire, cell connection, or busbar due to the crash and all that tiny-wired shit's live.
Nothing goes outside the battery box unless it's galvanically isolated or on a relay/contactor.
And galvanically isolated connections outside the box.
No BMS sense wires can go to a "central BMS", since voltages above 60V are prohibited after a crash.
Lots of DIYers in the past have ignorantly run sense wires out of the battery box to an external BMS, including famous Irish EV hackers. Many of those wires have hundred(s) of volts on them - all the time, even when the key is off.
That DIY legacy needs to be stopped in its tracks, since there may be people risking their lives to save yours and you're building a contraption that will electrocute them for trying.
Nothing goes outside the battery box that cannot be fully disconnected if it exceeds 60V.
So, no Matt, it's not "no". All you need is one short to chassis of one wire, cell connection, or busbar due to the crash and all that tiny-wired shit's live.
Nothing goes outside the battery box unless it's galvanically isolated or on a relay/contactor.
