Clamshell Cell Testing With Thermoelectric Temperature Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current methods for testing electrochemical cells are time-consuming, non-scalable, and result in inconsistent thermal conditions and data due to manual handling and limited test ranges, leading to variability in ambient temperatures and cooling power across individual cells.
Innovation Solution
A clamshell apparatus with a thermoelectric device for temperature control, combined with a frame and coolant system, allows for precise temperature management during charging or discharging sequences, using a positive thermal coefficient device for safety cutoff and temperature detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If manual handling and environmental chambers are used for temperature control, then device complexity is reduced, but productivity decreases and manufacturing precision deteriorates due to time-consuming operations and inconsistent thermal conditions
Solution Approach 1:
The system divides the battery pack into individual cell compartments, each with its own thermoelectric temperature control device. This segmentation allows parallel processing of multiple cells simultaneously, dramatically increasing productivity while maintaining precise temperature control for each cell independently.
Solution Approach 2:
The patent replaces manual mechanical handling with automated thermoelectric (Peltier) devices for temperature control. This substitution eliminates the need for manual chamber operations, reducing time-consuming manual processes while providing precise, programmable temperature management for each cell.
2Manufacturing precision
If manual handling is used, then device complexity is lower, but manufacturing precision deteriorates due to variable ambient temperatures and inconsistent cooling power across cells
Solution Approach 1:
Each cell is equipped with its own dedicated thermoelectric temperature control device, ensuring that temperature conditions are independently optimized for each cell. This eliminates the variability inherent in shared environmental chambers and manual handling, achieving uniform temperature control across all cells simultaneously.
Solution Approach 2:
The system uses programmable temperature control to precisely adjust and maintain specific temperature parameters for each cell during testing. This allows consistent thermal conditions to be replicated across multiple cells and test cycles, significantly improving manufacturing precision compared to manual environmental control.
3Productivity
If automated thermoelectric devices are used for temperature control, then productivity increases and manufacturing precision improves, but device complexity increases
Solution Approach 1:
The thermoelectric devices serve multiple functions: they provide both heating and cooling capabilities, integrate temperature sensing, and can operate in parallel across multiple cells. This multi-functionality justifies the increased device complexity by delivering superior productivity and precision that manual systems cannot achieve.
Solution Approach 2:
The system efficiently manages thermal energy by recovering heat from cells during discharge and utilizing it during charging cycles, reducing the overall energy requirement for temperature control. This energy recovery mechanism helps offset the complexity of the automated temperature control system by improving overall system efficiency.
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 consistent and scalable testing of electrochemical cells by maintaining controlled thermal environments for each cell, ensuring reliable data across all channels and efficient heat management.
Implementation Method 1
The thermoelectric device is configured for operating according to Peltier effect
Implementation Method 2
The positive thermal coefficient device is configured for detecting a safety cutoff temperature of the electrochemical cell
Data Source
AI summary
An apparatus comprises: a clamshell configured for holding an electrochemical cell having first and second terminals, the clamshell comprising at least first and second portions hinged to each other; first and second contacts positioned for contacting the first and second terminals, respectively; and a thermoelectric device mounted to the clamshell for controlling a temperature of the electrochemical cell.