7 KiB
Twizy Battery Part List
For explosion drawings and OE part numbers, see…
A good source for all parts is JC Parts.
Fuses, connectors and relais
Parts may of course be replaced by functionally compatible ones, for example use a fork lift relais for the main power relais (relais & fuses are no special parts). Blazej Blaszczyk has built his prototype without using Renault parts. For details please contact him at blazej.blaszczyk@pascal-engineering.com.
- The
296740718R
signal connector is Yazaki part no. 7282-8854-30 (contact terminals sold separate). - The
296743399R
main power connector is DELPHI part no. F473110, with contact terminals F176600. - The
296746418R
charger power connector is DELPHI part no. F873110, with contact terminals 15516298.
Casing
Note: Lutz Schäfer offers to build individual custom battery cases offering more space. For details please contact him at aquillo@t-online.de.
Sizes:
- Standard Renault Box: 724 x 368 x 208 mm
- Lutz-Box V1 (without car modification): 745 x 400 x 245 mm
- Lutz-Box V2 (car modification necessary): 745 x 480 x 245 mm
Arduino
Note: if you plan to use Pascals integrated Twizy BMS, you won't need an Arduino. The integrated BMS also implements the Twizy protocol.
For a basic setup you'll need an Arduino, a CAN interface and a relais to switch the 3MW signal.
Standard Arduinos can be powered from 12V, but will burn the voltage difference (convert to heat), so a step-down voltage regulator is highly recommended. The Pololu A-Star SV series has on-board step-down regulators suitable for a 12V supply.
Using an Arduino Uno style main board with shields reduces soldering requirements but needs more money and space than for example a Nano based board with break out components.
Keep in mind for all setups, this is an automotive application: expect high levels of mechanical stress due to road shocks and temperature expansion/contraction. Protect your electronics against humidity.
Price note: there are lots of cheap Arduino clones available. These can of course be used as well. Expect a lower build quality, so better order some spares (always a good idea).
Example basic Uno/Shield setup
Category | Component | ~Price |
---|---|---|
Main+Power | Pololu A-Star 32U4 Prime SV | 24.95 € |
CAN | Seeed Studio CAN-BUS Shield v1.2 | 24.95 € |
Relais | Seeed Studio Relais Shield V3.0 | 21.95 € |
Total | ~ 72 € |
Example basic Nano setup
Category | Component | ~Price |
---|---|---|
Main | Arduino Nano V3 clone | 4.95 € |
I/O | Arduino NANO Screw Terminal Expansion Board | 4.95 € |
CAN | NiRen MCP2515_CAN (TJA1050) | 4.50 € |
CAN | … 16 MHz quartz | 0.23 € |
Relais | 5V 2 Channel Relay Shield | 2.95 € |
Total | ~ 18 € |
Example components
Category | Component | ~Price |
---|---|---|
Main | Arduino Uno R3 | 20.80 € |
Main | Arduino Nano V3 | 23.80 € |
Main+Power | Pololu A-Star 32U4 Prime SV | 24.95 € |
Power | Pololu 5V, 2.5A Step-Down Voltage Regulator D24V22F5 | 8.95 € |
CAN | Seeed Studio CAN-BUS Shield v1.2 | 24.95 € |
CAN | NiRen MCP2515_CAN (TJA1050) Note: these come with 8 MHz quartz, you should replace this with a 16 MHz type |
4.50 € |
Relais | Seeed Studio Relais Shield V3.0 | 21.95 € |
Relais | 5V 2 Channel Relay Shield | 2.95 € |
I/O | Adafruit Proto-Screwshield | 15.50 € |
I/O | Arduino NANO Screw Terminal Expansion Board | 4.95 € |
I/O | Adafruit ADS1015 12-Bit ADC - 4 Channel | 10.95 € |
I/O | Mayhew Labs Extended ADC Shield | 30 € |
I/O | Seeed Studio RS232 Shield | 12.50 € |