codfish
New Member
- Joined
- Feb 27, 2020
- Messages
- 133
I’d like to re-propose my Normally Closed relay solution.
Put a NC relay somewhere in the PV path. Drive the coil of the relay with a crowbar circuit running direct from the battery and set above normal pack voltage but below real damage.
Relay only needs to carry PV amps, no loss under normal operation.
Crowbar circuit only needs to carry relay coil amps ( low cost).
If circuit accidentally trips - no harm - pack was fully charged and it will reset.
This only protects the battery but could be quite low cost.
Put a NC relay somewhere in the PV path. Drive the coil of the relay with a crowbar circuit running direct from the battery and set above normal pack voltage but below real damage.
Relay only needs to carry PV amps, no loss under normal operation.
Crowbar circuit only needs to carry relay coil amps ( low cost).
If circuit accidentally trips - no harm - pack was fully charged and it will reset.
This only protects the battery but could be quite low cost.
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