Dual-Motor Vehicle Control for Endurance and Driving Stability
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Solution Overview
Problem
Vehicles equipped with high-power drive motors or multiple motors suffer from a significantly shorter endurance range, leading to poor riding experience due to inefficient energy consumption and stability issues.
Innovation Solution
A control method and apparatus that flexibly manage the operation of a second motor based on the vehicle's driving mode, traveling speed, and status to optimize energy usage and improve stability, including turning the second motor on or off based on specific conditions such as driving mode, gear position, and motor status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a dual-motor or triple-motor driving form is used to improve power performance and operation stability, then the vehicle has better acceleration performance and stability, but the endurance range is significantly shortened
Solution Approach 1:
The system dynamically adjusts the number of operating motors based on driving conditions and power requirements. The control method switches between single-motor and dual-motor modes, and adjusts power distribution in real-time, making the multi-motor system adaptable rather than static, thereby improving energy efficiency while maintaining stability when needed
Solution Approach 2:
The control method changes operational parameters including motor power output, torque distribution, and operating mode (single/dual motor) based on vehicle speed, acceleration requirements, and energy state. This dynamic parameter adjustment optimizes the balance between power performance and energy consumption
2Power
If a high-power drive motor is used to improve acceleration performance, then the vehicle has better sport mode performance, but the endurance range is significantly shortened
Solution Approach 1:
The system applies partial power output from available motors rather than always using full power. The control method adjusts motor output to match actual driving needs, using only the necessary portion of available power, thereby extending endurance while maintaining adequate acceleration performance when required
Solution Approach 2:
The control system periodically monitors driving conditions, energy state, and motor performance, adjusting power distribution and motor operation modes in cycles. This periodic optimization allows the system to switch between high-performance and energy-efficient modes based on current requirements
Data Source
AI summary
A control method and apparatus are provided. The method is applied to a vehicle including a first motor and a second motor. The method includes: obtaining reference information, where the reference information includes a driving mode of the vehicle; and controlling, based on the driving mode of the vehicle, the second motor to be turned on or turned off. The motor of the vehicle can be flexibly controlled in different driving modes. This helps improve cost-effectiveness and driving stability of the vehicle.