Portable Charge Display Device with Local Prediction for Blocked Signals
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Solution Overview
Problem
In hybrid and electric vehicles, users face inconvenience when trying to determine the remaining battery charge in reinforced concrete buildings due to radio wave blocking, preventing communication between the portable device and the vehicle's controller, thus hindering the display of charge information.
Innovation Solution
A portable device equipped with a transmission unit to request charge information, a reception unit to store and display charge information, and a charge prediction information calculating unit that predicts the battery's state-of-charge even when communication is lost, using stored charge information and characteristics to estimate the remaining amount and charging time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the portable device relies on wireless communication with the controller to display charge information, then the charge information display is simple and direct, but the display fails in reinforced concrete buildings where radio waves are blocked
Solution Approach 1:
The portable device performs preliminary actions by storing charge information (remaining amount, charging start time, charging power) locally before communication failure occurs. When radio wave blocking is detected, the device uses this pre-stored data to calculate and display predicted charge information, ensuring continuous availability without requiring real-time communication.
Solution Approach 2:
The patent introduces an intermediary calculation mechanism that bridges the gap between stored charge information and current battery state. The calculation unit uses stored historical data combined with current battery parameters (voltage, temperature, internal resistance) to compute predicted remaining amount and charging time, acting as a mediator when direct communication is unavailable.
2Ease of operation
If the portable device stores and calculates charge information locally, then it can display information without communication, but the device complexity increases
Solution Approach 1:
The portable device performs self-service by autonomously calculating predicted charge information using its own stored data and current battery parameters. The device independently determines predicted remaining amount and charging time without requiring external controller intervention, enabling operation in communication-denied environments.
Solution Approach 2:
The patent replaces the mechanical communication-based information acquisition system with a computational prediction system. Instead of relying on wireless signal transmission to obtain charge information, the device substitutes this with local data processing and calculation algorithms that estimate current battery state based on historical data and physical parameters.
3Loss of information
If the device uses predicted charge information, then it can provide continuous display in blocked areas, but the precision of charge information may be reduced
Solution Approach 1:
The calculation unit continuously updates predicted charge information by incorporating real-time battery parameters (voltage, temperature, internal resistance) as feedback from the actual battery state. This feedback mechanism allows the system to adjust predictions dynamically, improving accuracy while maintaining operation without communication.
Solution Approach 2:
The patent changes the parameters used for charge information representation from direct controller data to calculated predicted values based on multiple battery parameters. By using voltage, temperature, and internal resistance as input parameters for prediction, the system transforms the nature of charge information from communicated facts to physically-based estimates, improving reliability in isolated conditions.
Data Source
AI summary
A portable device for displaying charge information has a transmission unit for wirelessly transmitting a signal, requesting charge information on a battery, to a controller provided with a unit for detecting a remaining amount of a battery, a reception unit for wirelessly receiving the charge information from the controller, a storage unit for storing charge information received by the reception unit, a display unit for displaying charge information stored into the storage unit, and a charge prediction information calculating unit for calculating prediction information regarding a state-of-charge of the battery based upon charge information stored in the storage unit in the case of the reception unit being unable to receive charge information from the controller after transmitting a signal requesting charge information from the transmission unit. The prediction information calculated by the charge prediction information calculating unit is displayed in the display unit.