EV SOC Warning Logic for Mid-Trip Battery Depletion Risk
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Solution Overview
Problem
Existing techniques for electric vehicles do not effectively notify users of the possibility of running out of electricity at appropriate times, leading to potential mid-trip battery depletion.
Innovation Solution
A warning apparatus and method that acquires prediction and actual measurement values of a vehicle's state of charge (SOC) during travel, determines if the relationship between these values satisfies a predetermined warning condition, and outputs warning information when the condition is met.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing notification techniques are used, then users receive some warning about battery status, but the notification timing is not appropriate and fails to effectively prevent mid-trip battery depletion
Solution Approach 1:
The system performs preliminary actions by calculating predicted SOC values along the entire travel route in advance, identifying warning areas before the vehicle actually reaches them. This allows the system to notify users at the optimal timing - when the vehicle is approaching the warning area but still has sufficient time to take corrective action such as finding a charging station or adjusting travel plans.
Solution Approach 2:
The system continuously monitors actual SOC values and compares them against predicted values in real-time. When the actual SOC deviates from the predicted SOC or when entering a warning area, the system provides feedback notifications to the user. This closed-loop feedback mechanism ensures timely and appropriate notifications that adapt to actual vehicle conditions.
2Reliability
If simple SOC threshold warnings are used, then the system is easy to implement, but it cannot provide timely warnings for dynamic changes in battery status during travel
Solution Approach 1:
The system performs preliminary calculations of predicted SOC values for the entire travel route before departure. By pre-calculating SOC trajectories based on route information, vehicle characteristics, and expected conditions, the system establishes a baseline for comparison without requiring complex real-time computations during travel.
Solution Approach 2:
The system implements continuous feedback by comparing actual SOC measurements against pre-calculated predicted SOC values. This real-time comparison mechanism detects deviations immediately when they occur, providing timely warnings without requiring overly complex prediction algorithms during operation.
3Measurement precision
If frequent SOC monitoring is performed, then accurate real-time battery status is achieved, but energy consumption increases
Solution Approach 1:
The system applies partial monitoring by focusing computational resources on critical moments - when the vehicle enters warning areas or when actual SOC deviates from predicted SOC. Instead of continuously performing full SOC predictions at every moment, the system selectively activates detailed monitoring and comparison only when necessary, reducing overall energy consumption while maintaining adequate measurement precision for safety.
Data Source
AI summary
The present invention provides a warning apparatus (10) including a prediction information acquisition unit (11) that acquires prediction information indicating a change in a predicted value of state of charge (SOC) of a vehicle while traveling based on a transport plan is performed, an actual measurement value acquisition unit (12) that acquires an actual measurement value of SOC of the vehicle while traveling based on the transport plan is performed, a determination unit (13) that determines whether a relationship between the predicted value and the actual measurement value satisfies a predetermined warning condition, and an output unit (14) that outputs first warning information in a case where the warning condition is satisfied.