Low-SOC Vehicle Operation With Progressive Range Conservation
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Solution Overview
Problem
Batteries of electric vehicles may be prematurely aged or damaged if operated when the state-of-charge (SOC) drops below a certain threshold, leading to inefficient vehicle operation and reduced range.
Innovation Solution
A multi-stage method involving progressive conservation steps is activated as the SOC decreases, including threshold monitoring and adaptive responses such as speed limiting, power reduction, and engine activation to extend the vehicle's range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the vehicle operates when SOC drops below a certain threshold, then the vehicle can continue its mission, but the battery may be prematurely aged or damaged
Solution Approach 1:
The system performs preliminary actions by activating conservation measures before the SOC reaches critical low levels. Multiple threshold levels trigger progressive conservation steps (speed limiting, power reduction, engine activation) to extend range while preventing battery damage, rather than waiting for critical failure points.
Solution Approach 2:
The system dynamically adjusts vehicle operation parameters based on real-time SOC levels. Conservation steps are progressively activated or deactivated as SOC crosses threshold levels, creating a dynamic response that extends range while protecting battery health through adaptive control.
2Use of energy by moving object
If the vehicle limits speed and reduces power to conserve energy, then the battery SOC is preserved, but the vehicle productivity decreases
Solution Approach 1:
The system dynamically adjusts conservation measures based on real-time SOC levels. Speed limiting and power reduction are applied progressively as SOC decreases, allowing full performance when energy is充足 and implementing conservation only when necessary, thus minimizing productivity impact while achieving energy conservation goals.
Solution Approach 2:
The system changes operational parameters (speed limits, power limits, acceleration rates) based on SOC threshold levels. These parameter adjustments are reversible and adaptive, allowing the vehicle to maintain optimal performance when energy is充足 and switch to conservation mode when SOC decreases, balancing productivity and energy conservation.
3Duration of action of moving object
If the vehicle activates multiple conservation steps at low SOC, then the range is extended, but the system complexity increases
Solution Approach 1:
The conservation system is segmented into multiple independent threshold levels, each triggering specific conservation steps. This modular approach allows the system to extend range through progressive activation of conservation measures while maintaining manageable complexity through clear separation of control logic.
Solution Approach 2:
The conservation system performs multiple functions through a unified control architecture: monitoring SOC, comparing against thresholds, activating appropriate conservation steps, and managing vehicle parameters. This multi-functional approach extends range while avoiding the complexity of separate independent systems.
Data Source
AI summary
The present disclosure provides a multi-stage method to extend the range of a vehicle. The method includes taking progressive actions on a vehicle as the state of charge (SOC) drops below defined levels. The method may include monitoring the SOC of the vehicle in relation to a SOC threshold or monitoring the SOC of the vehicle in relation to the distance remaining to a predetermined destination.