Adaptive Regenerative Braking Control for Variable Road Conditions
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Solution Overview
Problem
Current regenerative braking systems in electric and hybrid vehicles have a fixed standard braking intensity, which does not dynamically adjust based on various driving conditions, leading to inconsistent driving experiences and system performance.
Innovation Solution
A system and method that dynamically and automatically adjusts regenerative braking intensity using data from roadway conditions, vehicle sensors, and operating parameters, allowing for real-time adjustments to optimize energy efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If regenerative braking intensity is fixed to a standard value based on acceleration, then the system is simple and reliable, but the driving experience becomes inconsistent and energy recovery is suboptimal under varying conditions
Solution Approach 1:
The patent implements dynamic adjustment of regenerative braking intensity by continuously monitoring multiple parameters including vehicle speed, acceleration, battery state of charge, and roadway conditions. The system automatically modifies braking intensity in real-time based on current operating conditions, transforming the static fixed-intensity system into a dynamic adaptive system that optimizes energy recovery while maintaining simplicity through automated control
Solution Approach 2:
The system incorporates feedback mechanisms by continuously sensing vehicle operating parameters and battery status, then using this information to adjust regenerative braking intensity. The control system receives feedback from sensors monitoring acceleration, speed, and battery charge levels, and automatically modulates braking force to achieve optimal energy recovery without requiring complex manual intervention
2Use of energy by moving object
If regenerative braking intensity is increased to maximize energy recovery, then energy efficiency improves, but friction braking becomes insufficient and vehicle control is compromised
Solution Approach 1:
The patent dynamically changes the regenerative braking intensity parameter based on real-time conditions. When battery state of charge is low or roadway conditions favor friction braking, the system adjusts the regenerative braking parameter downward. When conditions are optimal for energy recovery, the parameter is increased, allowing the system to maximize energy capture while maintaining adequate friction braking capability for safety
Solution Approach 2:
The braking system operates as a composite system combining two braking mechanisms: regenerative braking and friction braking. The control system intelligently distributes the braking demand between these two components, using regenerative braking for energy recovery when conditions permit and friction braking for reliability when needed, creating a hybrid braking system that leverages the strengths of both approaches
3Ease of operation
If regenerative braking intensity is dynamically adjusted based on multiple factors, then driving experience consistency improves, but the computational requirements and system complexity increase
Solution Approach 1:
The patent segments the control system into distinct functional modules: sensor modules for detecting vehicle parameters, a processing module for evaluating multiple factors including roadway conditions and battery status, and a control module for adjusting braking intensity. This segmentation allows the complex automated adjustment process to be managed through coordinated simple functions, improving driving experience consistency while keeping individual components relatively simple
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
Enhances the driving experience by providing a more consistent feel and optimizing energy recovery, improving safety by reducing the need for friction braking and enhancing vehicle control.
Implementation Method 1
Regenerative braking is used in vehicles that make use of electric motors... With regenerative braking, electrical energy generated can be fed into a charging system for the car's batteries
Data Source
AI summary
Systems and methods are directed to dynamically and automatically adjusting a standard regenerative braking intensity. Roadway data, data from one or more sensors of a vehicle and data including parameter values for operating states of the vehicle regarding a roadway from a route being navigated by the vehicle are received by a processor of a control system of the vehicle. Standard regenerative braking intensity values based on a vehicle's acceleration is retrieved from memory. Adjusted regenerative braking intensity values are calculated based on at least one of the roadway data, the sensor data and the parameter values of the operating states of the vehicle and the standard regenerative braking intensity values. The adjusted regenerative braking intensity values are transmitted to the control system and an acceleration or deacceleration amount is applied to the vehicle based on the adjusted regenerative braking intensity values.