Joule - Technical Information
Every component of Joule was individually considered; each part needed to encompass the ideals of the end product: an efficient zero-emission automobile that would pave the way to a greener future.
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Battery
Energy is supplied by a modular, large-cell lithium-ion battery pack with sufficient capacity to provide a range of 200km per module. The chassis has space to fit two battery modules which slide in easily from below giving Joule a 400km maximum range.
Brakes
A regenerative braking system for normal driving is used whereby energy recovered with this system goes back into the battery, adding to the car’s range. Four ventilated disk brakes with ABS for emergency braking come standard.
Body
The body consists of a steel space frame with a combination of composite (glass and carbon) and plastic body panels. Side impact protection is provided by high strength steel cross-bars in the doors.
Chassis
The chassis is a flat wafer structure and is the key to Joule’s spacious and versatile interior. The chassis comprises front and rear crumple zones, the batteries and electronics bays; it also provides attachment points for the suspension.
Integrated Vehicle Computer
A uniquely integrated computer developed from EV specific architecture controls all Joule’s onboard systems. Every battery cell is monitored independently to ensure optimal performance and durability of the battery. An integrated, programmable onboard charger ensures that no external charging infrastructure is required and that charging can be synchronised with off-peak electricity.
Propulsion
Joule offers a choice of two drive options. Firstly, a purpose developed asynchronous permanent magnet motor driving the front wheels through an 8:1 reduction gearbox. The second option is an asynchronous permanent magnet motors located in the wheels, for rear or four wheel drive.
Packaging
Joule was imagineered as a battery electric vehicle from the outset. No compromises were made for the legacy engine or gearbox related influences in the design and layout, providing optimal interior space with minimal exterior footprint.
Performance
Joule, the optimal solution for urban transport sports fast acceleration from a standstill, motorway compatible speed with a top speed of 135 km/h, a tight turning circle, short wheel base and small front and rear overhangs offering a pleasurable driving experience in the modern city environment.
Safety
Joule is designed to UN-ECE safety standards, and includes all modern safety features such as side impact protection, ABS and airbags.
Styling
Joule’s body and interior styling was designed by Keith Helfet. With its simple, elegant lines and self assured stance Joule has a timeless appeal setting it apart from the crowd.
Suspension
The suspension provides a safe, comfortable driving experience, specifically tailored for urban use. The front suspension consists of McPherson struts, whilst the rear suspension employs a semi-independent trailing twist beam system.