Wireless Power Upload Timeout Detection for Vehicle Charging

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Solution Overview

Problem

Existing noncontact power supply systems face challenges in detecting abnormalities during power transfer between a vehicle and a power supplying apparatus, necessitating a simple and effective method to maintain system normalcy.

Innovation Solution

A power supply management device and method that includes a communicating module to receive power supply information and a processor to judge abnormalities based on the absence of information within a predetermined time period, indicating potential issues in power supply.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If power supply information upload is monitored without a simple time-based check, then abnormality detection accuracy improves, but device complexity increases

Engineering Contradiction:
Improveabnormality detection accuracyVSAvoiddetection system complexity
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The system uses its own existing communication module and timer resources to perform abnormality detection. The processor leverages the already-present communicating module that receives power supply information, adding only a time-based check function rather than introducing separate detection hardware or complex monitoring systems.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The patent implements a simplified detection approach by checking only whether power supply information is received within a predetermined time period, rather than implementing comprehensive monitoring of all power supply parameters. This partial action provides sufficient abnormality detection for the intended purpose while keeping the system simple.

Inventive Principle:
Principle #16Partial or excessive action

2Reliability

If comprehensive power supply monitoring is implemented, then system reliability improves, but ease of operation deteriorates

Engineering Contradiction:
Improvesystem reliabilityVSAvoidoperation simplicity
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The system automatically performs abnormality detection without requiring manual monitoring or complex configuration. The processor autonomously checks whether power supply information is received within the predetermined time period and independently determines abnormalities, eliminating the need for manual intervention while maintaining simplicity.

Inventive Principle:
Principle #25Self-service

3Speed

If real-time power supply monitoring is implemented, then abnormality detection speed improves, but use of energy increases

Engineering Contradiction:
Improvedetection speedVSAvoidenergy consumption
Core Design Contradiction:
SpeedVSUse of energy by moving object

Solution Approach 1:

The system performs abnormality detection at predetermined time intervals by checking whether power supply information is received within expected time frames. This periodic approach using the existing communication cycle provides timely abnormality detection without requiring continuous monitoring, thereby minimizing energy consumption.

Inventive Principle:
Principle #19Periodic action

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

Enables the detection of abnormalities in noncontact power supply processing through a straightforward technique, ensuring the system's reliability and efficiency.

Implementation Method 1

a communicating module for receiving power supply information relating to noncontact power supply from at least one of a vehicle and a ground power supplying apparatus

Methodology Applied
Scientific EffectWireless communication: Electromagnetic Induction

Data Source

PatentUS12407194B2Power supply management device and abnormality judgment method
Publication Date: 2025.09.02 TOYOTA JIDOSHA KK
  • US12407194B2 patent drawing
  • US12407194B2 patent drawing
  • US12407194B2 patent drawing

AI summary

The power supply management device includes a communicating module for receiving power supply information relating to noncontact power supply from at least one of a vehicle and a ground power supplying apparatus when noncontact power supply between the vehicle and the ground power supplying apparatus ends, and a processor configured to judge that an abnormality relating to upload of the power supply information has occurred if the communicating module has not received the power supply information within a predetermined time period regardless of noncontact power supply having been scheduled.