Multi-Motor Control with Heat Generation Management
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Solution Overview
Problem
Existing motor control systems for vehicles require multiple motor control apparatuses for each motor, increasing the number of parts and manufacturing costs, and pose a risk of overheating due to high current when multiple motors are driven simultaneously.
Innovation Solution
A single motor control apparatus with a heat generation management unit that controls the drive of multiple motors, limiting the temperature of its elements by calculating a heat generation level value based on lock times and adjusting the drive of motors to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple motor control apparatuses are used for each motor, then each motor can be controlled independently, but the number of parts and manufacturing costs increase
Solution Approach 1:
The patent merges multiple motor control functions into a single motor control apparatus. The control unit within this single apparatus is configured to control the drive of multiple motors based on electric power supply from an electric power source, thereby reducing the number of separate control apparatuses while maintaining independent control capability for each motor.
Solution Approach 2:
The motor control apparatus is designed with universal control capability to manage multiple motors through a single control unit. This multi-functional design allows one control apparatus to perform the roles that would traditionally require multiple separate control apparatuses, reducing system complexity and part count.
2Productivity
If multiple motors are driven simultaneously, then productivity increases, but the temperature of control unit elements may exceed heat resistance limits due to high current
Solution Approach 1:
The control unit incorporates a heat generation management unit that monitors and manages heat generation during motor operation. This feedback mechanism allows the system to detect when the temperature of control unit elements is approaching heat resistance limits and adjust motor drive accordingly, enabling simultaneous motor operation while preventing overheating.
Solution Approach 2:
The heat generation management unit dynamically adjusts operating parameters based on thermal conditions. By monitoring temperature and modifying drive parameters in real-time, the system can maintain high productivity through simultaneous motor operation while keeping control unit element temperatures within safe limits.
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 configuration reduces the number of motor control apparatuses needed, lowers system costs, and prevents overheating by managing the drive of multiple motors, ensuring the control unit's elements do not exceed their heat resistance limits.
Implementation Method 1
the heat generation management unit controls the drive of each of the plurality of motors so that a temperature of elements constituting the control unit does not exceed a heat resistance upper limit
Data Source
AI summary
A motor control apparatus includes a control unit that controls drive of each of a plurality of motors on the basis of electric power supply from a battery. The control unit includes a heat generation management unit that controls the drive of each of the plurality of motors so that a temperature of elements constituting the control unit does not exceed a heat resistance upper limit.