Electromechanical Brake Motor Cooling for Overheating Control
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Solution Overview
Problem
The existing electromechanical braking (EMB) systems face overheating issues due to inadequate heat dissipation, leading to decreased motor efficiency and potential coil winding burnout, with no effective solution currently available to address this problem.
Innovation Solution
A braking temperature control method and system that utilizes thermistors, a fan, and a thermoelectric semiconductor chilling plate to monitor and manage the temperature of the stator winding, adjusting cooling parameters based on intermediate and preset temperatures to prevent overheating, and implements a braking force distribution strategy to maintain vehicle stability and prevent motor failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Force
If continuous braking is performed, then braking force is maintained, but motor overheating occurs due to insufficient heat dissipation
Solution Approach 1:
The system performs preliminary temperature monitoring and predictive cooling control. The controller predicts future temperature trends based on current temperature and braking conditions, and activates cooling measures before critical overheating occurs, allowing continuous braking without motor damage
Solution Approach 2:
The system implements real-time temperature feedback control through thermistors monitoring motor temperature, with the controller continuously adjusting cooling fan speed and thermoelectric semiconductor chilling plate current based on temperature feedback to maintain braking force while preventing overheating
2Temperature
If cooling measures are intensified, then motor temperature is reduced, but system complexity increases
Solution Approach 1:
The cooling system uses dynamic, multi-level control rather than static design. The controller adjusts cooling intensity in real-time based on actual temperature conditions, using variable speed fan control and adjustable current to the thermoelectric semiconductor chilling plate, allowing effective temperature control without requiring oversized fixed cooling components
Solution Approach 2:
The system changes operating parameters dynamically - fan rotational speed and thermoelectric semiconductor chilling plate current are adjusted based on temperature levels. This allows a single cooling system to provide variable cooling capacity from mild to intensive, avoiding the need for multiple discrete cooling systems
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
Effectively controls the operating temperature of the EMB driving motor, ensuring efficient operation and preventing braking failure by redistributing braking forces, thus maintaining vehicle stability and preventing motor overheating.
Implementation Method 1
a thermoelectric semiconductor chilling plate; electrifying the thermoelectric semiconductor chilling plate
Implementation Method 2
a fan, a ventilation fin; starting the fan, and controlling a rotational speed of the fan
Implementation Method 3
thermistors are disposed at a first position and a second position of the stator winding; acquiring a temperature of the stator winding in the electromechanical brake by the thermistors
Data Source
AI summary
Provided are a braking temperature control method and system for an electromechanical brake. In the braking temperature control method for an electromechanical brake provided by the present disclosure, an intermediate temperature is obtained based on temperatures acquired by thermistors mounted on a stator winding, and a braking temperature control solution is generated based on a relationship between the intermediate temperature and a preset temperature, to control the heating of an electromechanical braking (EMB) driving motor. Therefore, under a conventional temperature control strategy, the operating environment of the EMB driving motor can be effectively improved, and the EMB efficiency is ensured. In addition, in a high-temperature abnormal operating state of the EMB driving motor, the operating temperature of the driving motor can be effectively controlled through a braking force redistribution strategy, thereby avoiding the braking failure caused by motor overheating.