Battery Pack Barrier Wall for Cooling Fluid Heat Dissipation
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Solution Overview
Problem
Existing battery packs face challenges in effectively dissipating heat from high-power, high-capacity battery cells, leading to reduced performance and efficiency due to inadequate cooling systems.
Innovation Solution
A battery pack design incorporating a case with an accommodation space for a cooling fluid that makes direct contact with battery cells, featuring a barrier wall dividing the space into upstream and downstream areas for improved heat dissipation, and a simple inlet/outlet connection structure to enhance cooling fluid flow and heat transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cooling fluid system is added to dissipate heat from high-power battery cells, then heat dissipation performance is improved, but device complexity increases
Solution Approach 1:
The patent merges the cooling fluid reservoir with the battery pack housing structure itself, eliminating the need for separate cooling system components. The housing serves dual functions as both structural enclosure and cooling fluid containment, thereby improving heat dissipation while avoiding increased device complexity
Solution Approach 2:
The housing structure is designed to perform multiple functions: it provides mechanical protection for battery cells, serves as the containment structure for cooling fluid, and facilitates thermal management. This multi-functionality allows the system to achieve effective cooling without adding dedicated cooling components that would increase complexity
2Loss of energy
If the cooling fluid flows directly through the accommodation space, then heat transfer efficiency is improved, but flow control complexity increases
Solution Approach 1:
The cooling fluid naturally circulates through the accommodation space by utilizing its own flow properties and the thermal gradients created during operation. The system design allows the cooling fluid to self-regulate its flow path along the barrier wall without requiring external pumps, valves, or complex flow control mechanisms, thereby maintaining high heat transfer efficiency while avoiding flow control complexity
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 design improves heat-dissipating performance by ensuring efficient flow and contact of the cooling fluid with battery cells, effectively managing heat generated during charging and discharging operations, thus maintaining high electrical output and capacity.
Implementation Method 1
a case providing an accommodation space for accommodating the battery cells and a cooling fluid for cooling the battery cells
Implementation Method 2
a plurality of battery cells; a case providing an accommodation space for accommodating the battery cells and a cooling fluid for cooling the battery cells
Data Source
AI summary
A battery pack includes: a plurality of battery cells; a case providing an accommodation space for accommodating the battery cells and a cooling fluid for cooling the battery cells; and a barrier wall extending across the accommodation space and dividing the accommodation space into an upstream area in communication with an inlet for the cooling fluid and a downstream area in communication with an outlet for the cooling fluid. The barrier wall provides a communication area where the upstream area and the downstream area communicate with each other. The inlet and the outlet are at a first end of the barrier wall in an extension direction of the barrier wall, and the communication area is at a second end of the barrier wall in the extension direction of the barrier wall.