Hybrid EV External Power Supply Mode Selection Under Varying Conditions
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Solution Overview
Problem
Users find it difficult to set power supply modes easily when supplying power from a vehicle to external devices, as existing systems lack intuitive methods for selecting appropriate power supply characteristics.
Innovation Solution
A hybrid electric vehicle system that presents users with multiple power supply modes, each with distinct characteristics, allowing selection by the user, and automatically performs the chosen mode, including options prioritizing noise suppression, power supply performance, and fuel efficiency, with recommendations based on time and location.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the user directly sets the discharge power setting value, then the power supply control precision is improved, but the ease of operation deteriorates because users find it difficult to understand how to set the discharge power setting value
Solution Approach 1:
The patent transforms the direct power value parameter into multiple mode parameters (e.g., priority modes for different scenarios). Instead of requiring users to set specific power values, the system provides preset modes that automatically determine discharge power based on current conditions, making operation easier while maintaining control precision through automated parameter adjustment
Solution Approach 2:
The system automatically determines the appropriate discharge power setting based on the selected mode and current vehicle state (battery charge level, engine status, etc.). The controller self-adjusts the power parameters without requiring user expertise, enabling the system to serve itself in optimizing power supply while simplifying user interaction
2Adaptability or versatility
If the system provides multiple power supply modes with different characteristics, then the adaptability is improved, but the device complexity increases due to multiple control modes
Solution Approach 1:
The patent segments the power supply control into multiple distinct modes (e.g., noise suppression mode, power supply performance mode, fuel efficiency mode), each optimized for specific scenarios. This segmentation allows the system to adapt to different conditions while keeping each mode's control logic relatively simple and manageable
Solution Approach 2:
The control system is designed to handle multiple power supply modes through a universal control framework. The controller can switch between different modes and automatically adjusts parameters based on the selected mode and current vehicle state, making the system multi-functional without requiring separate control systems for each mode
Data Source
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AI summary
A hybrid electric vehicle (20) includes an engine (22) configured to output power using fuel from a fuel tank (25), a generator (MG1) configured to generate power using a power from the engine, a power storage device (50) connected to a power line together with the generator; and a controller (70). When a user desires external power supply, in which power is supplied from the vehicle to outside of the vehicle, the controller (70) presents the user with multiple power supply modes that have different power supply characteristics, and when the user selects one of the multiple power supply modes, the controller performs the external power supply in the power supply mode selected by the user.