Regenerative Braking Torque Control with Dynamic Axle Load Sharing
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Solution Overview
Problem
Existing methods for controlling regenerative braking in electric or hybrid vehicles often result in inefficient power distribution between axles, leading to excessive wear and reduced reliability of the braking system, especially under intensive braking conditions.
Innovation Solution
A method and system for dynamically controlling regenerative braking torque based on temperature thresholds and axle-specific conditions, ensuring balanced power distribution and reduced wear by adjusting regenerative braking torque according to temperature and system state.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed distribution of regeneration electric power is applied between axles according to a physical law, then the braking control is simplified and consistent, but it results in excessive tightening forces and unnecessary wear on brake components
Solution Approach 1:
The patent implements dynamic distribution of regenerative braking power between axles based on real-time temperature measurements. The control system continuously monitors brake component temperatures and adjusts the power distribution ratio accordingly, transitioning from a static fixed distribution to a dynamic adaptive distribution that responds to actual thermal conditions of the braking system.
Solution Approach 2:
The patent employs feedback control by measuring the temperature of brake components on each axle and using this information to adjust the regenerative braking power distribution. The control system receives temperature feedback from sensors, processes this information, and modifies the power distribution to maintain optimal braking performance while preventing excessive wear.
2Use of energy by moving object
If regenerative braking is applied uniformly across all axles, then the energy recovery is maximized, but it causes excessive fatigue and reduced operating life of braking components
Solution Approach 1:
The patent applies local quality by distributing regenerative braking power non-uniformly across different axles based on their individual thermal states. Each axle receives a customized portion of the regenerative braking power proportional to its temperature and thermal capacity, allowing energy recovery while preventing localized overheating and excessive wear on specific brake components.
3Productivity
If the braking system is subjected to intensive use with repeated acceleration and braking, then the vehicle performance is maintained, but the wear increases drastically and reliability decreases
Solution Approach 1:
The patent employs feedback control by measuring the temperature of brake components on each axle and using this information to adjust the regenerative braking power distribution. The control system receives temperature feedback from sensors, processes this information, and modifies the power distribution to maintain optimal braking performance while preventing excessive wear.
Solution Approach 2:
The patent implements dynamic distribution of regenerative braking power between axles based on real-time temperature measurements. The control system continuously monitors brake component temperatures and adjusts the power distribution ratio accordingly, transitioning from a static fixed distribution to a dynamic adaptive distribution that responds to actual thermal conditions of the braking system.
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
This approach enhances braking efficiency, maintains system performance during intensive use, reduces wear, and increases the operating life of braking components by managing energy flow and maintaining uniform temperatures within the braking system.
Implementation Method 1
a braking system (200) comprising a first plurality of components (201) operatively associated with said at least one first axle (101) and a second plurality of components (202) operatively associated with said at least one second axle (102), a battery module (205) and at least one data processing unit (204)
Implementation Method 2
a first regenerative braking torque value to be applied to the first axle (101) and a second regenerative braking torque value to be applied to the second axle (102)
Data Source
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AI summary
A method (300) for controlling the regenerative braking torque of a vehicle (100), the vehicle (100) comprising at least one first axle on which at least one first moving member (R1) of the vehicle (100) is mounted and at least one second axle on which at least one second moving member (R2) of the vehicle (100) is mounted, the vehicle (100) further comprising a braking system (200) comprising a first plurality of components (201) operatively associated with said at least one first axle and a second plurality of components (201) operatively associated with said at least one second axle, the vehicle (100) comprising at least one traction and regenerative braking supply module (203) configured to provide the regenerative braking torque to one or more regenerative braking torque actuation modules with which the vehicle (100) is provided, the vehicle (100) further comprising a battery module (2) and at least one data processing unit (204) operatively connected to said at least one traction and regenerative braking supply module (203), to the first plurality of components (201) of the braking system (200), to the second plurality of components (202) of the braking system (200). The method (300) comprises steps of: detecting (301), by the at least one data processing unit (204), a first information representing a deceleration request of the vehicle (100); detecting (302), by the at least one data processing unit (204), a second information representing a speed of at least one of the vehicle (100), the first moving member (R1) of the vehicle (100) and the second moving member (R2) of the vehicle (100); determining (303), by the at least one data processing unit (204), a first temperature value of at least one component of the first plurality of components (201 ) of the braking system (200) operatively associated with said at least one first axle; determining (304), by the at least one data processing unit (204), a second temperature value of at least one component of the second plurality of components (202) of the braking system (200) operatively associated with said at least one second axle; determining (305), by the at least one data processing unit (204), a third information representing the state of at least one of the battery module (205) and said at least one traction and regenerative braking supply module (203); determining (306), by the at least one data processing unit (204), a regenerative braking power dynamic distribution ratio between the first axle and the second axle on the basis of the first information, of the first temperature value and of the second temperature value; determining (307), by the at least one data processing unit (204), a first regenerative braking torque value to be applied to the first axle and a second regenerative braking torque value to be applied to the second axle on the basis of the determined regenerative braking power dynamic distribution ratio, of the second information and of the third information; providing (308), by the at least one data processing unit (204), the first regenerative braking torque value and the second regenerative braking torque value to said at least one traction and regenerative braking supply module (203).