DRIVE TRAIN SOLUTIONS

PROTOTYPE VEHICLE DEVELOPMENT
PROTOTYPE VEHICLE DEVELOPMENT

Wheego  successfully developed an all-electric passenger vehicle which passed US crash-testing and is on the road now. Wheego has also developed a prototype all-electric delivery van.

The ability to predictively model vehicle behavior before building the vehicle is a crucial step in EV development. The Wheego prototype model provides a simple to use and flexible modeling space in which we simulate each aspect of the vehicle – ESS, charger, DC to DC converter, motor, weight, tires, etc. – and see accurate performance data, such as acceleration, braking, and range based on input drive cycles. This system provides a great foundation for our autonomous controls with the ability to model vehicle handling, stopping, and acceleration.

ENERGY STORAGE SYSTEM (ESS)
BATTERY MANAGEMENT SYSTEM (BMS)

Most commercially available Battery Management System solutions do not have a very high level of customizability, programmability or reliability. The Wheego BMS is optimized to a specific cell and ESS. It also incorporates active balancing, which allows for power balancing from one cell to another, rather than simply burn it off like traditional BMS solutions. This provides a longer cell life, thus reducing the number of ESS replacements under a warranty period. It also allows for lower charge times while consuming less power from the grid.

BATTERY MANAGEMENT SYSTEM (BMS)
VEHICLE CONTROLS

Wheego has developed supervisory control algorithms for advanced electric drive-trains using industry standard tools. These algorithms are fully customizable and the tools used for development allow for rapid development of new features on the vehicle and integration of new components resulting in a quicker development life cycle. 

ON-BOARD CHARGER (OBC)
ON-BOARD CHARGER (OBC)

Our custom OBC has a minimum power output of 10-12kW when connected to a single phase, 240V grid. For comparison, a 60 kWh battery would need roughly 19 hours to charge from 0-100% with a 3.3 kW OBC, 10.5 hours with a 6 kW OBC, and just 5.5 hours with a 12 kW OBC. The charger is also universal, working in the United States and just as easily as in Europe or China – independent of single phase vs three phase power, 50 Hz vs 60 Hz, and broad input voltage range. The OBC is also a compact package that is liquid cooled for maximized performance.

BATTERY CELL CHARACTERIZATION
BATTERY CELL CHARACTERIZATION & VALIDATION

Batteries are obviously a crucial component in an EV. Wheego has multiple cell battery analyzers (CBAs) that allow us to test at the cell, module, and battery pack level, as well as an environmental chamber. This testing allows us to verify supplier data, cell longevity and point of discharge, The Wheego system also puts cells through both hot and cold environments and demonstrates real-world charge/discharge cycles for more accurate evaluation. Coupled with the ESS and Thermal Management system, Wheego develops very efficient and cost effective battery packs.