Main contactors and precharge
This post is just a draft, there will be more schematics and diagrams coming…
The main contactors will make it possible to make the HV-system powerlkess during all drive states. This is an important part of the safety architecture and the last resort to take the system into a safe state on case of a hazardous situation.
The main contactors together with the precharge circuit is an important part in starting up the vehicle.
Main contactors
Each of the batteries has two Littlefuse DCNEV250-M
Precharge
Prechange is managed by a Littlefuse DCNSEV30-B in series with a 10Ω 100W power resistor. These are couples in paralell to the positive main contactor in the front battery.
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