Mobile Body Switching Unit Failure Checks Without Load Leakage Errors

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing control devices for mobile bodies may erroneously detect electric leakage during failure determination processes.

Innovation Solution

A control device for a mobile body that includes a charging and electrical power supplying unit, a switching unit, a connection determination unit, a failure determination unit, and a control unit. The control unit limits failure determination when an electrical load is connected to the electrical power supplying connector, preventing erroneous electric leakage detection.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If failure determination is executed to detect switching unit failures, then reliability of failure detection is improved, but erroneous electric leakage detection occurs when electrical load is connected

Engineering Contradiction:

Improvefailure detection reliabilityVSAvoiderroneous electric leakage detection

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The connection determination unit performs preliminary detection to identify whether an electrical load is connected to the electrical power supplying connector before the failure determination unit executes failure determination. This preliminary action prevents erroneous electric leakage detection by avoiding failure determination when loads are connected, while still enabling reliable failure detection when connectors are unused.

Inventive Principle:

Principle #10Preliminary action

2Productivity

If simple failure determination is performed, then detection speed is improved, but electric leakage is erroneously detected

Engineering Contradiction:

Improvedetection speedVSAvoidelectric leakage detection accuracy

Core Design Contradiction:

ProductivityVSMeasurement precision

Solution Approach 1:

The system performs preliminary detection of electrical load connection status before executing failure determination. This preliminary check enables the system to quickly identify when failure determination should be skipped, maintaining high detection speed while preventing erroneous electric leakage detection through the conditional execution logic.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The connection determination unit provides feedback information about electrical load connection status to the failure determination unit. This feedback mechanism enables the failure determination unit to adjust its operation based on the connection status, preventing erroneous detection while maintaining efficient detection speed through intelligent conditional execution.

Inventive Principle:

Principle #23Feedback

Data Source

PatentUS12348064B2Control device for mobile body, control method therefor, and mobile body including determining a failure of a switching unit when no electrical load is connected

Publication Date: 2025.07.01 HONDA MOTOR CO LTD

AI summary

A control device for a mobile body is equipped with a switching unit configured to switch a conductive path between a charging and electrical power supplying unit, a charging connector, and an electrical power supplying connector, a connection determination unit configured to determine whether or not an electrical load is connected to the electrical power supplying connector, a failure determination unit configured to execute a failure determination to determine a failure of the switching unit based on a conductive state when the conductive path is switched, and a control unit configured to limit execution of the failure determination by the failure determination unit, in the case it is determined by the connection determination unit that the electrical load is connected to the electrical power supplying connector.