Note
This page is just a draft — more schematics and diagrams coming.
The battery will be built from modules out of a donor EV, the type of which will be determined by availability. Hopefully we can come by a cost-effective 24 kWh Nissan Leaf battery.
Since the VW Beetle is quite small, the battery will need to be divided
into two parts: a rear battery between the back seat and the rear
firewall, and a front battery in the frunk where the gas tank normally
sits. Depending on the modules, the batteries will be connected in series
or parallel to reach a nominal voltage of ~350–400 V and deliver
~200 A.
The pack ties into the rest of the high voltage system via the Main contactors and precharge and is supervised by the DIY BMS.
Front battery
The front battery will contain the precharge circuit and the service disconnect.
Rear battery
TBD.
Current shunt
For current measurement on the pack:
- Shunt resistor: BAS-M-R0001-R-5.0
- Isolated ADC: AMC3306M05