Dual-Circuit Power Supply Isolation for Moving Object Reliability

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing power supply systems in electrified moving objects face challenges in ensuring energy efficiency and reliability, particularly in managing power distribution and isolating abnormal conditions to prevent cascading failures.

Innovation Solution

A power supply system with dual control devices for each connection and contactor, allowing independent control of connectors and contactors, and auxiliary power sources to ensure redundancy and isolation of abnormal conditions, thereby maintaining power supply even in failures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a single control device is used to control connectors and contactors in existing power supply systems, then the device complexity is reduced, but the reliability decreases due to single point of failure risk

Engineering Contradiction:

Improvepower supply reliabilityVSAvoidcontrol device complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The control function is segmented into multiple independent control devices (first control device and second control device). Each control device independently controls specific connectors and contactors, eliminating single point of failure and improving reliability while distributing system complexity across multiple manageable units.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The system incorporates redundant control devices that stand by ready to take over control functions if a primary control device fails. This prior cushioning approach ensures continuous operation and maintains reliability without significantly increasing operational complexity.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Reliability

If power supply circuits are connected without isolation mechanisms, then the ease of operation is improved, but the reliability deteriorates due to risk of cascading failures from abnormal conditions

Engineering Contradiction:

Improvesystem resilienceVSAvoidpower distribution management

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The power supply system is divided into separate power supply circuits (first power supply circuit and second power supply circuit) with isolated control devices. This segmentation prevents abnormal conditions in one circuit from cascading to other circuits, improving system resilience while maintaining manageable operational complexity through modular design.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Control devices act as intermediaries between power sources and load devices, managing power distribution and isolation. The connectors and contactors serve as intermediary components that can be independently controlled to isolate abnormal conditions while maintaining overall system operation.

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS12556006B2Power supply system, and moving object including power supply system

Publication Date: 2026.02.17 HONDA MOTOR CO LTD

AI summary

A power supply system includes: a first connection circuit including a first connector and a second connector that are capable of connecting a first power supply circuit and a second power supply circuit to each other; a first positive side contactor provided in the first power supply circuit; a second positive side contactor provided in the second power supply circuit; a first control device for controlling the first connector and the first positive side contactor; and a second control device for controlling the second connector and the second positive side contactor.