Stacked Cell Module Thermal Management via Mode Switching
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Solution Overview
Problem
Conventional lithium-ion secondary cells with through holes for air and cooling water flow increase the cell capacity and complexity, leading to a complicated configuration and reduced efficiency in temperature control.
Innovation Solution
A cell system with a stacked-type module that includes lithium ion unit cells, a gas supply part, a cooling liquid supply part, a temperature sensor, and a control part that switches between normal and high-temperature control modes to manage temperature using air and cooling liquid effectively, reducing the formation region of through holes and maintaining a simple configuration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If through holes for air and cooling water are provided inside the cell, then temperature control is improved, but cell capacity decreases and configuration becomes complicated
Solution Approach 1:
The through hole is designed to serve multiple functions: air cooling, water cooling, and heating operations. By providing a single through hole that can accommodate different cooling media and operational modes, the invention eliminates the need for separate through holes for air and water cooling, thereby simplifying the overall cell configuration while maintaining effective temperature control across different thermal management scenarios
Solution Approach 2:
The thermal management system employs dynamic switching between different cooling modes (air cooling, water cooling) and heating modes based on real-time temperature conditions. The control unit adjusts the type of cooling medium and flow rate dynamically, allowing the same through hole structure to adapt to varying thermal requirements without requiring multiple fixed configurations
2Temperature
If through holes for air and cooling water are provided inside the cell, then temperature control is improved, but cell capacity is reduced
Solution Approach 1:
The through hole is designed to serve multiple functions: air cooling, water cooling, and heating operations. By providing a single through hole that can accommodate different cooling media and operational modes, the invention eliminates the need for separate through holes for air and water cooling, thereby simplifying the overall cell configuration while maintaining effective temperature control across different thermal management scenarios
Solution Approach 2:
The invention changes the operational parameters of the through hole by allowing it to handle different types of cooling media (air or water) and switching between cooling and heating modes. This parameter flexibility enables the same physical structure to meet varying thermal management requirements without increasing the number or size of through holes, thus preserving cell capacity
3Adaptability or versatility
If multiple cooling media and heating operations are supported, then temperature control flexibility is improved, but system complexity increases
Solution Approach 1:
The through hole is designed to serve multiple functions: air cooling, water cooling, and heating operations. By providing a single through hole that can accommodate different cooling media and operational modes, the invention eliminates the need for separate through holes for air and water cooling, thereby simplifying the overall cell configuration while maintaining effective temperature control across different thermal management scenarios
Solution Approach 2:
The control unit receives temperature information from temperature sensors and automatically switches between different cooling and heating modes based on real-time thermal conditions. This feedback mechanism enables intelligent, adaptive thermal management without requiring complex manual control systems, as the system autonomously selects the appropriate operational mode (air cooling, water cooling, or heating) based on detected temperature levels
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
The system effectively suppresses temperature increase in lithium ion cells while maintaining a simple configuration with reduced through hole formation, enhancing cooling efficiency and cell performance.
Implementation Method 1
a through hole for air to flow therethrough, which is intended for performing air cooling
Implementation Method 2
a through hole for cooling water to flow therethrough, which is intended for obtaining a higher cooling effect
Implementation Method 3
a temperature sensor that detects a temperature of the stacked-type cell module
Implementation Method 4
a control part that controls switching between a normal control mode and a high-temperature control mode based on a detection signal output from the temperature sensor
Implementation Method 5
The lithium-ion secondary cells generate heat due to their internal resistance during the charging and discharging processes
Data Source
AI summary
A cell system includes: a stacked-type cell module (100) having a plurality of lithium ion unit cells (1) being stacked and having through holes (3a, 3b) formed therein; a gas supply part (31); a cooling liquid supply part (32); a temperature sensor (35); and a control part (36) that controls switching between a normal control mode and a high-temperature control mode based on a signal from the temperature sensor (35). In the normal control mode, the control part (36) controls the gas supply part (31) to supply a gas to the through holes (3a, 3b), and at the same time, controls the cooling liquid supply part (32) to stop supply of a cooling liquid, and in the high-temperature control mode, the control part (36) controls the cooling liquid supply part (32) to supply the cooling liquid to the through holes (3a, 3b) to which the gas is supplied, and at the same time, controls the gas supply part (31) to stop supply of the gas. According to this cell system, the increase in temperature of the cell is suppressed while having a simple configuration with a reduced formation region of through holes provided in a lithium ion cell.