In-situ Coin Cell Support for Temperature-Controlled X-ray Diffraction

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Solution Overview

Problem

Current in-situ X-ray diffraction analysis methods for lithium secondary batteries are limited to room temperature, failing to account for structural changes and reaction mechanisms at varying temperature ranges during charging/discharging, which can lead to battery deterioration or explosion.

Innovation Solution

An in-situ coin cell support device for transmission mode X-ray diffraction analysis capable of controlling temperature, featuring a coin cell seating unit with X-ray transmission windows, a heat-insulating housing, and a temperature control unit that maintains a wide temperature range from low to high, allowing real-time measurement of structural changes during charging/discharging.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If in-situ X-ray diffraction analysis is performed at room temperature only, then the analysis setup is simple, but the temperature range coverage is limited and cannot account for structural changes at varying temperatures

Engineering Contradiction:
Improvetemperature range coverageVSAvoidanalysis setup complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The coin cell is nested within a temperature control device that is itself nested within the X-ray diffraction analysis system. The temperature control device includes a housing with thermal insulation layers and heating/cooling elements nested inside, creating a multi-level nested structure that enables temperature control without complicating the overall analysis setup

Inventive Principle:
Principle #7Nested doll (Nesting)

Solution Approach 2:

A temperature control device acts as an intermediary between the coin cell and the X-ray diffraction analysis system. This intermediary component provides temperature control functionality while maintaining compatibility with the existing analysis system, allowing extended temperature range coverage without direct modification of the core analysis apparatus

Inventive Principle:
Principle #24Intermediary (Mediator)

2Temperature

If temperature control components are added to enable wide temperature range analysis, then the temperature control capability is improved, but the device complexity increases

Engineering Contradiction:
Improvetemperature control capabilityVSAvoiddevice structure complexity
Core Design Contradiction:
TemperatureVSDevice complexity

Solution Approach 1:

The temperature control device is designed with multi-functional components that serve multiple purposes. The housing provides both structural support and thermal insulation, while integrated heating and cooling systems enable both heating and cooling functions through a single device structure, reducing overall complexity despite enhanced functionality

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

Thermal insulation layers are applied selectively to specific regions of the housing where heat loss or gain would most affect temperature control efficiency. This localized approach to insulation reduces material usage and device complexity while maintaining effective temperature control capability across the required temperature range

Inventive Principle:
Principle #3Local quality

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 observation and understanding of structural changes and reaction mechanisms within a wide temperature range, enhancing the stability and performance of lithium secondary batteries by simulating various temperature conditions during charging/discharging processes.

Implementation Method 1

a temperature control unit closely coupled to an exterior of the housing, the temperature control unit including an inlet port, an outlet port, and a flow passage

Methodology Applied
Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

a housing having a heat-insulating function, the housing being disposed to surround the coin cell seating unit

Methodology Applied
Scientific EffectThermal insulation: Thermal Insulation

Implementation Method 3

a first through-hole formed therein to allow X-rays to pass therethrough

Methodology Applied
Scientific EffectX-ray diffraction: X-Ray

Implementation Method 4

transmission mode X-ray diffraction analysis

Methodology Applied
Scientific EffectDiffraction: Diffraction

Data Source

PatentUS10644284B2In-situ coin cell support device for transmission mode X-ray diffraction analysis capable of controlling temperature
Publication Date: 2020.05.05 KOREA INST OF SCI & TECH
  • US10644284B2 patent drawing
  • US10644284B2 patent drawing
  • US10644284B2 patent drawing

AI summary

An in-situ coin cell support device for transmission mode X-ray diffraction analysis capable of controlling temperature. The device includes a coin cell seating unit including a seating part for receiving an in-situ coin cell, a positive electrode tab coupled to the seating part and connected to a positive electrode of the in-situ coin cell, and a negative electrode tab coupled to the seating part and connected to a negative electrode of the in-situ coin cell, a housing having a heat-insulating function, which surrounds the coin cell seating unit such that the positive and negative electrode tabs extend outwards from the housing and which includes one side wall and an opposite side wall arranged opposite each other with the in-situ coin cell interposed therebetween, and a temperature control unit coupled to the exterior of the housing and including an inlet port, an outlet port, and a flow passage.