Battery Cell Measurement Module for In-Situ Phase Change Analysis
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Solution Overview
Problem
The relationship between phase change characteristics and electrochemical performance of new cathode and anode active materials in lithium-ion batteries is not clearly understood, making it difficult to optimize and commercialize these materials.
Innovation Solution
A battery cell measurement module with an in-situ optical and electrochemical analysis method that allows for precise observation of the battery cell during charging and discharging, using a transparent window for optical imaging and Raman analysis, enabling comprehensive analysis of electrochemical behavior and phase changes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a traditional battery cell measurement module is used, then the structure is simple and easy to manufacture, but the relationship between phase change characteristics and electrochemical performance cannot be clearly identified
Solution Approach 1:
The battery cell is nested within a measurement module that includes a transparent window, allowing the internal structure and phase change characteristics to be observed directly while maintaining a relatively simple overall structure. The measurement module encompasses the battery cell, optical path, and measurement devices in a integrated nested configuration.
Solution Approach 2:
A transparent window is introduced as an intermediary element that allows optical signals to pass through the measurement module and interact with the battery cell internally. This intermediary enables non-intrusive observation of phase change characteristics without compromising the simple structural design.
2Adaptability or versatility
If new cathode and anode active materials are tested without in-situ observation, then the device complexity is low, but the electrochemical performance optimization is difficult
Solution Approach 1:
The measurement module is designed with multi-functionality to accommodate various measurement needs. The transparent window allows for multiple types of optical measurements (phase change observation, electrochemical performance analysis) to be conducted simultaneously or sequentially on the same battery cell, enhancing adaptability without requiring multiple separate devices.
Solution Approach 2:
The measurement module merges optical measurement capabilities with electrochemical testing in a single integrated system. The transparent window serves both structural and optical measurement functions, while the module accommodates both phase change observation and electrochemical performance analysis, reducing the need for separate measurement systems.
3Productivity
If high current density electrochemical tests are conducted, then the productivity is improved, but resistance increases and active materials may be damaged
Solution Approach 1:
The transparent window enables real-time visual feedback on the state of active materials during high current density testing. Researchers can directly observe phase changes and material degradation, allowing them to adjust test parameters to maintain material integrity while maximizing productivity. The feedback loop between visual observation and test parameter adjustment prevents irreversible damage.
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
This approach allows for precise simulation of electrochemical behavior, reducing resistance and preventing damage to active materials, enabling electrochemical tests at high current densities and improving the understanding and commercialization of new battery materials.
Implementation Method 1
the upper housing provided with a transparent window
Data Source
AI summary
A battery cell measurement module includes a lower housing having a connection part and a fixing part connected to the lower housing. An upper portion of the fixing part has a battery cell accommodation space accommodating a battery cell. The fixing part includes a connection hole that is in communication with the battery cell accommodation space and has the connection part arranged therein. Module includes a height control part that extends from the battery cell accommodation space to the connection part via the connection hole. Module includes an upper housing detachably attached to the lower housing, arranged to surround the fixing part and the height control part, and provided with a transparent window. The battery cell has an opening in an upper surface of the battery cell and is accommodated in the battery cell accommodation space such that the opening is located at a position vertically overlapping the transparent window.