Hybrid Vehicle Display Apparatus Mode Switching
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Solution Overview
Problem
In hybrid vehicles, the existing display apparatuses fail to accurately inform drivers about the electric motor locomotion mode's capabilities and the relationship between accelerator operation and future locomotion distance, especially when the battery's state of charge is low, making it difficult for drivers to appreciate when to continue electric motor-only mode.
Innovation Solution
A display apparatus with a control unit that displays separate regions for electric motor and hybrid locomotion modes on a display plane, adjusting the border between these regions based on the estimated switching point between modes, allowing drivers to visualize the future locomotion distance and required accelerator operation for electric motor mode continuation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the electric motor locomotion zone width is set based on maximum battery output value, then the display reflects battery capability, but the driver cannot appreciate future locomotion distance and accelerator operation requirements when SOC is low
Solution Approach 1:
The display region is segmented into multiple zones: a first display portion showing the electric motor locomotion zone based on current battery output, and a second display portion showing the hybrid locomotion zone. This segmentation allows the driver to see both current capabilities and future transitions, resolving the information loss about locomotion mode changes.
Solution Approach 2:
The display apparatus performs preliminary action by showing the switching point between electric motor and hybrid locomotion zones in advance. This allows the driver to anticipate future mode changes and adjust accelerator operations accordingly, preventing information loss about upcoming transitions.
2Reliability
If the electric motor locomotion zone width is reduced when battery SOC is low, then the display reflects current battery limitations, but the driver cannot understand the relationship between accelerator operation and future locomotion distance
Solution Approach 1:
The display provides feedback by showing both the current electric motor locomotion zone and the switching point to hybrid mode. This feedback loop helps the driver understand how accelerator operations affect future mode transitions, improving ease of operation while maintaining reliable battery status reflection.
Solution Approach 2:
The invention adds a temporal dimension to the display by showing not only the current locomotion zone but also the future switching point. This dimensional expansion allows the driver to plan accelerator operations in advance, improving ease of mode management while maintaining accurate battery status display.
3Device complexity
If the display shows only current locomotion zone based on maximum battery output, then the display is simple and clear, but it fails to provide information about future mode switching and locomotion planning
Solution Approach 1:
The display is segmented into functional portions: a first display portion for current electric motor locomotion zone and a second display portion for hybrid locomotion zone with switching point indication. This segmentation adds future mode information while maintaining overall display simplicity and clarity.
Data Source
AI summary
A display apparatus includes a display plane and a control unit. The display plane configured to display a first display portion that shows a locomotion region in the first locomotion mode in a display region based on the output request and a future locomotion distance of the vehicle and a second display portion that shows a locomotion region in the second locomotion mode next to the first display portion in the display region. The control unit configured to control an image displayed in the display plane. The control unit changes a border between the first display portion and the second display portion based on the future locomotion distance in accordance with an estimation result of displacement of a switching point between the first locomotion mode and the second locomotion mode.