Dual Fluid Battery Thermal Management via Segmented Circulation
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Solution Overview
Problem
Batteries generate heat during operation, which can lead to temperature increases, potentially causing inefficiency or failure if not properly managed, especially during charging or high current output scenarios, where existing thermal management systems may be insufficient.
Innovation Solution
A dual fluid circulation system is employed to manage battery temperatures, where a first fluid circulates through the battery cells and transfers heat to a second fluid with higher thermal conductivity, allowing for effective heat dissipation and temperature control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If a single fluid circulation system is used for thermal management, then the system complexity is low, but the heat dissipation effectiveness is insufficient during high current operation
Solution Approach 1:
The thermal management system is divided into two separate fluid circulation systems: a first fluid circulation system that circulates first fluid through first conduits adjacent to battery cells, and a second fluid circulation system that circulates second fluid through second conduits adjacent to the first conduits. This segmentation allows independent optimization of each system's flow rate and thermal properties, significantly improving heat dissipation effectiveness during high current operation while maintaining manageable system complexity through modular architecture
Solution Approach 2:
The second fluid circulation system is nested within or adjacent to the first fluid circulation system, with second conduits positioned adjacent to first conduits. This nested configuration enables the second fluid to absorb heat from the first fluid, creating a cascaded thermal management approach that enhances overall heat dissipation capacity without proportionally increasing system complexity
2Power
If high current is delivered to or drawn from batteries, then the power output is high, but the heat generation increases leading to temperature rise
Solution Approach 1:
The dual fluid circulation systems operate continuously to remove heat generated during high current operation. The first fluid continuously circulates through first conduits adjacent to battery cells, and the second fluid continuously circulates through second conduits, ensuring uninterrupted heat dissipation that maintains battery temperature within safe operating ranges even during sustained high power delivery or charging
Solution Approach 2:
The first fluid acts as an intermediary between the battery cells and the second fluid. Heat is transferred from battery cells to the first fluid, then from the first fluid to the second fluid through thermal conduction across the conduit walls. This intermediary mechanism enables efficient heat removal during high current operation while allowing independent optimization of each fluid's thermal properties
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 effectively regulates battery temperatures, preventing overheating and ensuring efficient operation, even during high-demand conditions, thereby extending battery lifespan and performance.
Implementation Method 1
a first fluid circulation system comprising a plurality of fluid conduits including a first fluid conduit that is adjacent to the first battery cell, wherein the first fluid circulation system is configured to circulate a first fluid through the battery system
Implementation Method 2
a second fluid circulation system comprising a plurality of fluid conduits including a first fluid conduit that is adjacent to the first fluid conduit of the first fluid circulation system, wherein the second fluid circulation system is configured to circulate a second fluid through the battery system in a second direction that is opposite the first direction
Data Source
AI summary
A battery system has a plurality of battery cells including a first battery cell. Each battery cell includes a casing enclosing an anode and a cathode. The battery system also includes a first fluid circulation system with a plurality of fluid conduits including a first fluid conduit that is adjacent to the first battery cell, where the first fluid circulation system is configured to circulate a first fluid through the battery system in a first direction. The battery system also includes a second fluid circulation system with a plurality of fluid conduits including a first fluid conduit that is adjacent to the first fluid conduit of the first fluid circulation system. The second fluid circulation system is configured to circulate a second fluid through the battery system in a second direction that is opposite the first direction.