Secondary Battery Module Thermal Management via Cell Barrier Plate
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Solution Overview
Problem
Secondary battery modules used in high-power applications, such as hybrid electric vehicles, face inefficiencies in heat dissipation, leading to temperature differences and potential explosions due to inadequate heat emission, which lowers charge-discharge efficiency and performance.
Innovation Solution
A secondary battery module design incorporating a cell barrier plate made of high thermal conductivity materials like copper or aluminum, coupled with a cooling plate and a heat dissipation assembly featuring cooling fans and thermoelectric elements, ensures uniform cooling by transferring heat from unit batteries to the cooling plate and dissipating it efficiently using air or other fluids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If unit batteries are serially connected to form a battery module for high power applications, then power output is improved, but heat generation increases and heat dissipation becomes insufficient
Solution Approach 1:
A cooling plate is introduced as an intermediary component between unit batteries to facilitate heat transfer. The cooling plate contacts multiple unit batteries and transfers their heat to a heat dissipation assembly, enabling efficient thermal management in high-power battery modules without compromising power output
Solution Approach 2:
The heat dissipation assembly utilizes fluid dynamics principles by employing cooling fans to force air circulation through the battery module. This pneumatic approach enhances convective heat transfer, allowing the system to dissipate the increased heat generation resulting from high-power serial connections
2Power
If heat emission is not properly managed, then power output can be maintained, but temperature differences between unit batteries increase, lowering charge-discharge efficiency
Solution Approach 1:
The cooling plate is strategically positioned to contact specific regions of multiple unit batteries, providing localized cooling where heat generation is most intense. This local quality approach ensures uniform temperature distribution across different battery cells, maintaining consistent charge-discharge efficiency throughout the module while preserving overall power output
3Duration of action of stationary object
If heat generation is not controlled, then battery module operation continues, but temperature excessively increases, causing safety hazards such as explosion
Solution Approach 1:
The cooling plate and heat dissipation assembly are pre-installed and positioned to contact unit batteries before operation begins. This preliminary thermal management infrastructure is already in place to prevent excessive temperature accumulation, ensuring continuous safe operation and eliminating safety hazards like explosion before they can occur
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 solution enhances cooling efficiency, prevents temperature imbalances, and reduces the risk of explosions by uniformly dissipating heat across all unit batteries, thereby improving the performance and safety of the battery module.
Implementation Method 1
a cell barrier plate disposed between the unit batteries to transfer heat generated from the unit batteries
Implementation Method 2
The heat dissipation assembly may have at least one cooling fan to move air toward the cooling plate
Implementation Method 3
The heat dissipation assembly may include at least one thermoelectric element disposed on the cooling plate
Data Source
AI summary
A secondary battery module includes a plurality of unit batteries, a housing receiving the unit batteries, a cell barrier plate disposed between the unit batteries to transfer heat generated from the unit batteries, a cooling plate disposed in contact with an end of the cell barrier plate, and a heat dissipation assembly disposed proximate to the cooling plate to dissipate heat transferred to the cooling plate.