EV Battery Baffle Structure for Passive Heat Dissipation
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Solution Overview
Problem
Conventional heat dissipation methods for electric vehicle battery packs are inefficient, leading to reduced performance and shorter service life due to limited surface contact area and the need for internal cooling systems, which also reduce available space and battery power.
Innovation Solution
A baffle structure with heat dissipation-oriented fins and a mask that uses air flowing over the vehicle to cool the battery pack, eliminating the need for internal cooling systems and utilizing solar panels and axial fans for continuous heat removal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If conventional air conditioning systems are used to cool battery packs, then heat dissipation is achieved, but available space in the vehicle is reduced and battery power is consumed
Solution Approach 1:
The battery pack cooling system uses the vehicle's own motion to drive airflow through the baffle fins, converting the vehicle's kinetic energy into cooling action without requiring separate power consumption from the battery. The moving vehicle automatically generates the airflow needed for heat dissipation.
Solution Approach 2:
The cooling function is extracted from the vehicle's internal air conditioning system and implemented as an independent external baffle structure mounted on the vehicle body, separating the cooling mechanism from the power-consuming internal systems.
2Temperature
If conventional air conditioning systems are used to cool battery packs, then heat dissipation is achieved, but available space in the vehicle is reduced
Solution Approach 1:
The cooling function is extracted from the vehicle's internal space and implemented as an external baffle structure mounted on the vehicle body, eliminating the need for internal cooling equipment and preserving valuable vehicle space.
Solution Approach 2:
The cooling system transitions from a three-dimensional internal installation to a two-dimensional external surface mounting, utilizing the vehicle's external surface area rather than consuming internal volume.
3Device complexity
If battery packs rely on casing-only heat dissipation, then structure is simple, but heat dissipation efficiency is poor and service life is short
Solution Approach 1:
The heat dissipation surface is segmented into multiple parallel baffle fins that create numerous narrow channels, dramatically increasing the effective heat exchange area compared to a single solid casing while maintaining structural simplicity.
Solution Approach 2:
The heat dissipation structure transitions from a two-dimensional flat casing surface to a three-dimensional finned structure with multiple surfaces exposed to airflow, exponentially increasing the heat transfer area.
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 baffle structure enhances heat dissipation efficiency, extends battery pack service life, and conserves electrical power by using external airflow and solar-generated power to maintain cooling without occupying vehicle space.
Implementation Method 1
air flowing over the moving electric vehicle to be automatically introduced into between the baffle fins to cool the baffle fins
Implementation Method 2
at least an axial fan disposed at the at least an air outlet
Implementation Method 3
at least an axial fan disposed at the at least an air outlet and connected to the at least a solar panel to receive electrical power therefrom
Data Source
AI summary
A baffle structure for heat dissipation, mounted on an electric vehicle on top of which a battery pack is mounted, includes a base, a plurality of baffle fins and a mask. The base is connected to the battery pack. The baffle fins are disposed on the base. The baffle fins each have a first end and a second end. The mask covers the baffle fins. The mask includes at least an air inlet and at least an air outlet which correspond in position to the first and second ends, respectively. The baffle structure guides hot air out, takes up no space inside the electric vehicle, dispenses with a need to be connected to any external cooling system, and saves electrical power supplied by the battery pack.