EV Route Calculator for Battery-Aware Journey Speed Planning
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Solution Overview
Problem
There is a lack of a preventative method for electronic vehicles to determine an optimal speed for traveling to a destination that conserves the power source while ensuring the vehicle reaches the destination without needing to charge, as existing systems are reactive and do not provide users with an optimal speed for energy conservation.
Innovation Solution
A control system that calculates a journey speed based on initial State of Charge and route profile data, determining an upper speed limit to ensure the vehicle reaches the destination with a State of Charge equal to or greater than a predetermined value, thereby avoiding the need for charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the user reduces their speed to conserve remaining power of the power source, then the power consumption is reduced, but the travel time increases and the user is unaware of the optimal speed
Solution Approach 1:
The control system performs preliminary calculations before the journey starts to determine the optimal speed. The system calculates the destination SoC using route profile data and initial power source state, then determines the optimal speed in advance to guide the user, avoiding the need for reactive speed adjustments during travel.
Solution Approach 2:
The system provides feedback to the user by indicating the optimal speed at which they may travel. This feedback loop allows users to adjust their driving behavior based on system recommendations, balancing power consumption and travel time to reach the destination with sufficient charge.
2Productivity
If the user travels at normal speed to minimize travel time, then the productivity is improved, but the power source may not have enough charge to reach the destination
Solution Approach 1:
The control system calculates the destination SoC before the journey begins by analyzing route profile data and initial power source state. This preliminary assessment allows the system to determine whether the current charge is sufficient for the planned route, enabling users to make informed decisions about charging before departure.
Solution Approach 2:
The system provides feedback to users about their charge status and optimal speed recommendations. This feedback mechanism helps users understand the relationship between their driving behavior and power consumption, allowing them to adjust their travel patterns to ensure sufficient charge arrival at the destination.
3Reliability
If the system provides reactive notifications during the route about charging needs, then the power source charge status is monitored, but the user experiences burden and may need to divert from the planned route
Solution Approach 1:
The control system performs all necessary calculations before the journey starts to determine if charging is needed. By calculating the destination SoC in advance using route profile data and initial charge state, the system can inform users of potential charging needs before they leave, eliminating the need for reactive mid-route notifications and route diversions.
Data Source
AI summary
Disclosed is a control system for a vehicle, the control system comprising one or more controllers, the control system arranged to: receive route profile data indicative of a route between a first location and a second location; receive energy information indicative of an initial State of Charge, SoC, of a power source of the vehicle prior to the vehicle travelling the route; calculate, using the energy information and the route profile data, a destination SoC of the power source of the vehicle at the second location; compare the destination SoC with a predetermined end-of-route SoC value; if the destination SoC is less than the predetermined end-of-route SoC value, determine a journey speed for the vehicle, the journey speed indicating an upper speed limit at which the vehicle may travel during at least a portion of the route and reach the second location with an SoC value equal to or greater than the predetermined end-of-route SoC value; and output the determined journey speed.