Hybrid Vehicle Drive Control for Residual Value Balancing
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Solution Overview
Problem
The residual value of hybrid vehicles is unevenly distributed among components like the internal combustion drive system, electric drive system, and clutch, leading to the overall value being assessed based on the lowest component, which can be excessively low.
Innovation Solution
A hybrid vehicle system with a controller that performs driving mode control, operating point control, and clutch control to balance the residual values of the internal combustion drive system, electric drive system, and clutch by adjusting power output conditions and engagement states.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the hybrid vehicle operates with two drive sources (engine and motor), then optimal output and torque are provided, but the residual values of major components become unevenly distributed
Solution Approach 1:
The controller dynamically adjusts the reference line on the vehicle-speed and torque graph based on real-time residual value differences between drive systems. When one drive system has a lower residual value, the reference line shifts to reduce its operating time and increase the operating time of the drive system with higher residual value, thereby dynamically balancing component utilization and preserving overall vehicle residual value.
Solution Approach 2:
The system changes the operational parameters (vehicle-speed and torque thresholds) by adjusting the reference line position. This parameter change redistributes the operating conditions between the internal combustion drive system and electric drive system, ensuring that the drive system with lower residual value operates less frequently, thus balancing the degradation rates of major components.
2Reliability
If the residual value of one major component is excessively low, then the overall residual value of the vehicle is assessed based on that low value, but the other major components may still have high residual values
Solution Approach 1:
The controller continuously monitors and compares the residual values of the internal combustion drive system and electric drive system. Based on this feedback, it automatically adjusts the reference line to favor the drive system with higher residual value, creating a closed-loop control system that actively balances component degradation and maximizes overall vehicle residual value.
3Reliability
If the reference line is adjusted to balance residual values, then the drive mode distribution changes, but the power output requirements must still be met
Solution Approach 1:
The vehicle operates in multiple drive modes (first drive mode with electric drive system as main source, second drive mode with internal combustion drive system as main source) and can switch between them based on the adjusted reference line. This multi-functionality ensures that power output requirements are always met while distributing operational stress to balance residual values of major components.
Data Source
AI summary
The hybrid vehicle includes a drive system including an internal combustion drive system and an electric drive system, a clutch that selectively connects the internal combustion drive system and the electric drive system, and a controller that performs at least one of driving mode control, operating point control, or clutch control, when entering residual value preservation control for balancing respective residual values of the internal combustion drive system, the electric drive system, and the clutch.