Whether for a short trip, to go to work or on a vacation trip, having reliable indications of the range is essential when planning the route with an electric car. The statutory test cycles as a basis for calculating the autonomy can only serve as a general guide for planning, since in practice the autonomy is affected by numerous parameters. In addition to external factors such as traffic conditions, the topography of the route or the outside temperature, the driver also has an important influence; for example, due to his driving style or the use of comfort equipment. The range indicator in Audi’s e-tron models passes this test with flying colors, taking into account all relevant parameters and providing an accurate range figure. In addition, the e-tron route planner takes care of optimally scheduling the necessary recharging stops on the trip. Route planning can be conveniently configured from inside the vehicle, or before departure via the myAudi app.
“We always want to show our customers real information about the remaining range based on their driving style. That’s why our intelligent calculation system takes all circumstances into account, whether it’s summer time and holiday traffic or winter weather and heating demands. Trust and honesty are key requirements to eliminate doubts about electric mobility and alleviate the anxiety that autonomy produces. This is the approach that our range indicator follows so that drivers can be sure that they will arrive at their destination on schedule,” says Christiane Zorn, Head of Product Marketing at Audi.
Consumption history, temperature and other parameters allow accurate calculation
Predictive, reliable and dynamic: The Audi e-tron models allow the driver to choose between two different options for calculating the range, depending on whether or not the Audi e-tron route planner is used as part of the Audi MMI. Without the technical support of the navigator and the route planner, the calculation of the remaining range is based on recent consumption values. The system also takes into account whether a particularly sporty or efficient driving style is being practiced. Isolated special factors that increase energy consumption, such as forward maneuvers, are reliably averaged, thus ensuring a realistic calculation.
In addition to data from the propulsion system, on-board energy consumers, the location of the car and the electrical system, the calculation of the remaining range also considers data from the thermal management system (heating or air conditioning) or the use of additional comfort elements, such as heated seats or steering wheels. In addition, the selected driving mode, individual car settings, load and weather conditions are taken into account. In this way, the autonomy indicator represents the most recent consumption data and projects it into the future, without additional information from the route planner.
|The range indicator for Audi electric cars, the ideal basis for precise planning|
Smart algorithms recognize driving style
For route-based range calculation, recent consumption data is supplemented by additional information from the route planner, available on all e-tron models. This means that the system takes into account the topography along the planned route, divided into small sections, which facilitates a very precise calculation. Each leg of the route is assigned an expected driving speed. Other parameters used are the probability that there are highways along the route, as well as the density of traffic. Urban traffic, traffic jams, speed limits and crossings influence the calculation. Unlike retrospective display of range, route-based calculations are capable of differentiating, from the moment a trip starts,
No external data connection: the calculation is done in milliseconds in the vehicle itself
Among the highlights of the data analysis is the dynamic adjustment of the remaining autonomy taking into account external factors and others related to the vehicle. External ones include real-time traffic congestion data, which is continuously collected and directly reflected in the calculation.
Some examples of factors associated with the vehicle are changes in use related to comfort features, or those related to driving style. If, for example, the heating or air conditioning is turned on or off, the remaining range is immediately recalculated, displaying the settings on the range indicator, allowing drivers to see at a glance how each parameter affects range remaining With the processing power of the Audi e-tron models, the data calculation only takes a few milliseconds, eliminating the need for a connection to an external data processor. As a result, the system works autonomously and is not dependent on sufficient mobile data coverage.
The Audi e-tron route planner is a new software development that was first used on all-electric models in the MIB 2+ generation of the modular infotainment platform. Since 2020, the third generation (MIB 3) provides greater functionality to the route planner, with a calculation power ten times higher.
The daily usefulness of the advanced route planner is further increased thanks to a new algorithm: daily updated data on charging points and alternative routes, both optimized for the requirements of electric vehicles, offer drivers better assistance, with detailed information about payment and authentication options, precise details of the operator and any possible access restrictions.
Optimized route planning favors high-power charging
When searching for suitable charging points along the route, Audi ensures that there is always a reliable basis with the route planner. To ensure the shortest possible travel time, charging stops are only made very well as necessary to reach the destination safely. If the route or consumption changes, for example due to unforeseen traffic jams or the deactivation of comfort functions, possible or necessary charging stops are also adjusted. Two short stops to charge at a high-power charging station can save time compared to one long stop at a lower-power charging station. When calculating the total travel time, alternative routes with better charging infrastructure are also taken into account,
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Thus, the range indicator for Audi electric cars, the ideal basis for precise planning as numerous variables ensure a reliable calculation of the remaining range