Battery Holder Structure for Multi-Axis Cell Rotation Testing

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Solution Overview

Problem

Existing battery test devices struggle to rotate battery cells or jelly-rolls at various angles for comprehensive testing, necessitating improved mechanisms for multi-axis rotation.

Innovation Solution

A battery holder device and system that includes a holder module with a holder housing and gripper, capable of rotating battery cells or jelly-rolls about multiple axes, integrated with an X-ray source and reaction unit for comprehensive testing.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a test device tests battery cells at various angles, then measurement precision is improved, but device complexity increases due to multiple rotation axes requirements

Engineering Contradiction:
Improvetesting accuracy at various anglesVSAvoidmulti-axis rotation mechanism
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The holder housing is divided into multiple body walls (first holder housing body wall, second holder housing body wall, etc.) that are spaced apart and connected by body bottoms. Each body wall can be independently positioned and rotated, allowing the battery cell to be tested at various angles without requiring a complex multi-axis rotation mechanism. The segmentation of the holder structure enables precise angular testing while maintaining manageable device complexity.

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If holder housing body walls are spaced apart to accommodate battery cells, then adaptability is improved, but holder housing volume increases

Engineering Contradiction:
Improvebattery cell accommodation capabilityVSAvoidholder housing volume
Core Design Contradiction:
Adaptability or versatilityVSVolume of stationary object

Solution Approach 1:

The holder housing body walls are arranged in a nested configuration where multiple walls (first, second, third, fourth body walls) are spaced apart but connected through body bottoms to form a compact structure. This nesting approach allows the battery cell to be accommodated between the walls while minimizing the overall volume of the holder housing. The walls can be positioned to fit different battery cell sizes, providing adaptability without excessive volume increase.

Inventive Principle:
Principle #7Nested doll (Nesting)

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 precise multi-axis rotation and comprehensive testing of battery cells, facilitating efficient data collection and analysis through computed tomography, suitable for green technology applications like electric vehicles and solar power generation.

Implementation Method 1

a test device including an X-ray source and an X-ray reaction unit that are disposed with the battery holder device therebetween

Methodology Applied
Scientific EffectX-ray: X-Ray

Data Source

PatentUS12379333B2Battery holder device and battery test system including the same
Publication Date: 2025.08.05 SK ON CO LTD
  • US12379333B2 patent drawing
  • US12379333B2 patent drawing
  • US12379333B2 patent drawing

AI summary

A battery holder device and a battery test system including the same are disclosed. The battery holder device and the battery test system including the same can grip battery calls and test the battery calls while rotating the gripped battery calls about two different axes. The battery holder device comprises a holder module including a holder housing forming a shape extending in a longitudinal direction and including a holder housing body, and a gripper movably coupled to the holder housing body. The holder housing body includes first and second holder housing body walls that are spaced apart from each other in the longitudinal direction of the holder housing and face each other, and a holder housing body bottom connecting the first and second holder housing body walls.