Vehicle Regenerative Braking Torque Control for Low-Adhesion Roads
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Solution Overview
Problem
Existing energy regeneration methods in vehicles fail to accurately adapt the regeneration torque based on user preferences and road conditions, leading to instability risks and inefficient energy conversion.
Innovation Solution
An energy regeneration method that determines a target regeneration torque by considering driving configuration information and road surface adhesion capability, adjusting the torque to avoid instability and optimize energy conversion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed regeneration intensity is determined only based on driving configuration information, then user preference is satisfied, but the system cannot adapt to actual road conditions leading to instability risks
Solution Approach 1:
The patent implements dynamic adjustment of regeneration intensity by continuously monitoring road surface adhesion capability and instability boundary conditions. The system transitions from a fixed regeneration intensity based solely on driving configuration to a dynamic target regeneration intensity that adapts to real-time road conditions, thereby resolving the contradiction between adaptability and stability.
Solution Approach 2:
The system incorporates feedback mechanisms by detecting road surface adhesion capability and instability boundary conditions, then using this feedback to adjust the target regeneration intensity. This closed-loop control ensures the system adapts to changing road conditions while maintaining vehicle stability, addressing both adaptability and reliability requirements.
2Productivity
If a high regeneration intensity is applied, then energy conversion efficiency is improved, but vehicle stability deteriorates on roads with poor adhesion
Solution Approach 1:
The patent changes the parameter of regeneration intensity from a fixed high value to a dynamically adjusted value based on road surface adhesion capability. By modifying this key parameter according to actual road conditions, the system optimizes energy conversion efficiency while preventing stability deterioration on roads with poor adhesion.
Solution Approach 2:
The system dynamically adjusts regeneration intensity levels based on real-time detection of road conditions and instability boundaries. This dynamic approach allows the system to maximize energy recovery when conditions permit while automatically reducing intensity when stability risks are detected, resolving the contradiction between productivity and reliability.
3Reliability
If the stability control function is frequently intervened in the energy regeneration process, then vehicle stability is maintained, but energy regeneration efficiency deteriorates due to regeneration withdrawal
Solution Approach 1:
The system performs preliminary detection of instability boundary conditions before instability actually occurs. By identifying potential stability issues in advance and proactively adjusting the target regeneration intensity, the system prevents the need for frequent stability control interventions, thereby maintaining both vehicle stability and energy regeneration efficiency.
Solution Approach 2:
The system applies preliminary anti-action by detecting road conditions and instability boundaries beforehand, then preemptively adjusting regeneration intensity to prevent instability. This anticipatory approach avoids the harmful effect of stability control intervention that would cause regeneration withdrawal, thus maintaining energy regeneration efficiency while ensuring stability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The method ensures accurate and safe energy regeneration by dynamically adjusting the torque based on user preferences and road conditions, reducing instability risks and enhancing energy utilization.
Implementation Method 1
the motor does not serve as a power source for output, but serves as a generator, and converts some kinetic energy of a vehicle into electrical energy and stores the electrical energy in a battery
Data Source
AI summary
This application discloses an energy regeneration method and apparatus, a device, a readable storage medium, and a vehicle, and pertains to the field of vehicle technologies. The method includes: determining a target regeneration intensity of a vehicle based on obtained regeneration intensity reference information of the vehicle, where the regeneration intensity reference information includes driving configuration information of the vehicle and a road surface adhesion capability of a road on which the vehicle is located; and determining a target regeneration torque of the vehicle based on the target regeneration intensity, and performing energy regeneration based on the target regeneration torque. The driving configuration information can reflect personalized selection of a user, and the road surface adhesion capability can reflect an actual driving environment.