Circular-Rail X-Ray CT for In-Situ Vehicle Battery Inspection

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Solution Overview

Problem

Conventional X-ray inspection devices for vehicle batteries require detachment and reattachment of batteries, which is time-consuming and inefficient.

Innovation Solution

A vehicle battery inspection device with a circular rail, movable X-ray source and detector, and a controller that allows for in-situ inspection of vehicle-mounted batteries, using a marker and imager for precise alignment, enabling quick and easy inspection without battery detachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If the battery is detached from the vehicle for inspection using a conventional X-ray device, then the inspection can be performed, but the inspection process becomes time-consuming and complex

Engineering Contradiction:
Improveinspection speedVSAvoidinspection process complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

An optical guide device is introduced as an intermediary between the vehicle-mounted battery and the X-ray inspection system. This device includes a light source, optical waveguide, and display unit that provide visual guidance for positioning the battery, eliminating the need for complex mechanical handling and detachment processes while enabling rapid in-situ inspection.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical detachment and positioning system with an optical guidance system. Instead of physically manipulating the battery through complex mechanical means, the system uses optical fields (light sources, waveguides, and displays) to guide the inspection process, thereby simplifying the overall system and reducing inspection time.

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

2Loss of time

If the battery remains mounted on the vehicle during inspection, then inspection speed improves, but positioning accuracy for X-ray imaging becomes difficult to achieve

Engineering Contradiction:
Improvetime for battery attachment/detachmentVSAvoidbattery positioning accuracy
Core Design Contradiction:
Loss of timeVSMeasurement precision

Solution Approach 1:

The optical guide device serves as an intermediary that bridges the gap between the vehicle-mounted battery and the X-ray inspection system. By providing real-time visual feedback through the optical waveguide and display unit, it enables precise positioning of the battery without requiring detachment, thus maintaining both speed and accuracy.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system incorporates feedback through the optical guide device that provides visual information about the battery's position relative to the optimal inspection location. This feedback mechanism allows operators to adjust the battery position in real-time, ensuring accurate positioning while the battery remains mounted on the vehicle.

Inventive Principle:
Principle #23Feedback

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 rapid and accurate inspection of vehicle batteries without damage, improving energy efficiency by enhancing inspection speed and clarity of X-ray CT images.

Implementation Method 1

an X-ray source configured to be movable along a circumferential direction of the rail, and irradiates the vehicle on the vehicle stand with X-rays

Methodology Applied
Scientific EffectX-ray emission: X-Ray

Implementation Method 2

an X-ray detector configured to be movable in synchronization with the X-ray source along the circumferential direction of the rail... and detects the X-rays emitted from the X-ray source to output an X-ray CT image of the battery

Methodology Applied
Scientific EffectX-ray detection: X-Ray

Data Source

PatentUS12449383B2Vehicle battery inspection device
Publication Date: 2025.10.21 HONDA MOTOR CO LTD
  • US12449383B2 patent drawing
  • US12449383B2 patent drawing
  • US12449383B2 patent drawing

AI summary

The vehicle battery inspection device includes a circular ring-shaped rail 10; a vehicle stand 20 that is arranged inside the rail 10, on the vehicle stand 20 the vehicle can self-travel substantially along the axial direction of the rail 10; a vehicle stand driver 30 that movably supports the vehicle stand 20; an X-ray source 40 configured to be movable along a circumferential direction of the rail 10 and irradiates the vehicle on the vehicle stand 20 with X-rays; an X-ray detector 50 configured to be movable in synchronization with the X-ray source 40 along the circumferential direction while being held in an orientation facing the X-ray source 40 and detects the X-rays to output an X-ray CT image of the battery; and a controller 90 which controls the vehicle stand driver 30 to arrange the battery at a location of inspection with the X-rays.