| Class | cruiser |
|---|---|
| Length x Width x Height | 4.61 m x 1.80 m x 1.23 m |
| Weight | 315 kg including batteries 650 kg including 4 passengers |
| Array | 326x Sunpower E60 in 7 Modules |
| Battery | Samsung INR18650-35E 14S96P |
| Motor | 2 custom, 1.3 kW Nominal, 3 kW Peak |
| Wheels | 4 custom lenticular 16” |
| Chassis | carbon fiber monocoque |
From their Wikipedia page (Google Translated)
The Emilia IV model, completed in June 2018, which has the following technical characteristics, belongs to the WSC category of 'Cruisers', vehicles suitable for the transport of passengers.
...
Aerodynamics
| Frontal Area | 1.60 m2 |
|---|---|
| Drag Coefficient | 0.20 |
Dynamics
| Front track | 1.320 m |
|---|---|
| Rear track |
...
| 1 |
...
| .200 m |
...
| Wheelbase |
|---|
...
| 2 |
...
Aerodynamics → Front surface: 1.60 m 2 . Aerodynamic coefficient (Cx): 0.20.
...
| .772 m |
Performance
| Top Speed | > 110 km/h |
|---|
...
| Average Power Consumption |
|---|
...
| 21 Wh/km @ 55 km |
...
| /h |
...
Photovoltaic panel → SunPower E60 cells. Technology: Monocrystalline silicon. Maximum cell efficiency: 24% (25 ° C). Number of modules: 7. Total number of cells: 326. Installed surface: 5m 2 .. Maximum panel power: 1100W. Photovoltaic panel converter: Maximum Power Point Tracker. Manufacturer: University of Bologna. Type: Boost Converter, distributed generation. Nominal single stage power: 200W. Maximum efficiency: 98%. Single stage weight: 100 g. MPPT number: 7.
Battery Pack → Cell Type: Lithium Ion - LiNiCoAlO2. Manufacturer and cell model: Samsung INR18650-35E. Nominal cell capacity: 3.4 Ah Battery pack construction: University of Bologna. Package configuration: 2x48P14S. Total number of cells: 1344. Nominal voltage pack: 48V. Ah nominal parcel: 331.2 Ah.Total energy: 16.1 kWh. Battery Management System: University of Bologna. BMS architecture: distributed. Limitation and protection: string current, cell voltage, cell temperature. Number of temperature sensors: 2688. Type of equalization: active. Pack cooling: air. Package dimensions: 1160x460x220 mm. External structure: carbon fiber and kevlar composite. Total weight package: 83 kg (with container). Battery positioning: central tunnel.
Engines → Constructor: University of Bologna. Type: Synchronous machine surface permanent magnets (SPMSM) with external rotor. Rotor on composite structure, directly coupled to the wheel and to the mechanical brake. Stator: on a composite structure. Nominal power (x1): 1300 W. Maximum power: 3000 W. Nominal torque: 35Nm. Maximum torque: 125 Nm. Efficiency: 97%. Weight: 11 kg. Cooling: natural air. Number of engines installed: 2, on the rear wheels.
Traction inverter → Manufacturer: University of Bologna. Type: three-phase inverter, field-oriented control. Maximum input voltage: 60V. Maximum current 200 ARMS. Efficiency: 98%. Weight: 1.0 kg. Cooling: natural air. Number of inverters: 2.
...
| Range | 750 km @ 55 km/h |
|---|
Array
| Cells | SunPower E60 |
|---|---|
| Efficiency | 24% |
| Modules | 7 |
| Cells | 326 |
| Area | 5 m2 |
| Power | 1100 W |
They use a custom boost MPPT that they designed.
| Nominal single stage power | 200 W |
|---|---|
| Maximum efficiency | 98% |
| Single stage weight | 100g |
| Number of MPPTs | 7 |
Battery Pack
| Cell Chemistry | LiNiCoAlO2 |
|---|---|
| Manufacturer | Samsung INR18650-35E |
| Nominal cell capacity | 3.4 Ah |
| Pack Configuration | two packs of 48P 14S |
| Number of Cells | 1344 |
| Nominal Pack voltage | 48 V |
| Nominal Pack Capacity | 331.2 Ah |
| Pack Energy | 16.1 kWh |
| Temperature sensors | 2688 |
| Cell Balancing | active |
| Cooling | air |
They have an insane amount of temperature sensors for their battery pack (2 for each cell) which is absolutely obscene.
They also build their own battery box, which is positioned in their catamaran, which apparently allows them to adjust the weight distribution by up to 5%.
| Dimensions | 1.160 m x 0.46 m x 0.22 m |
|---|---|
| Material | carbon fiber and kevlar composite |
| Weight | 83 kg |
Motors
One interesting thing is that they design their own motors and motor controllers, which allows them to have no high voltage in their car.
They built a brushless DC motor out of composite materials, which are direct drive to the wheel and mechanical brake. They use two motors mounted to the rear wheels.
| Nominal power | 1300 W |
|---|---|
| Maximum power | 3000 W |
| Nominal torque | 35 Nm |
| Maximum torque | 125 Nm |
| Efficiency | 97% |
| Weight | 11 kg |
| Cooling | air |
Motor Controllers
They also build their own motor controllers.
| Type | three-phase, field oriented control |
|---|---|
| Maximum input voltage | 60 V |
| Maximum RMS current | 200 A |
| Efficiency | 98% |
| Weight | 1.0 kg |
| Cooling | air |
Telemetry
They use a Wi-Fi network. They run 5 separate CAN buses, each at 1 Mb/s.
Driver Display
They have a 12" LCD display.