Vehicle Battery Cooling Device with Downstream Fan
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Solution Overview
Problem
Existing vehicle battery cooling devices are ineffective in maintaining battery performance due to inadequate cooling methods, leading to performance degradation, and they often require complex structures and additional components for air exhaust, which increases weight and complexity.
Innovation Solution
A vehicle battery cooling device design featuring a fan positioned downstream of the air outlet, air inlets on side walls, and an air introduction duct distant from external heat sources, which allows for efficient air circulation and cooling, reduces the need for additional ducts, and simplifies the structure by utilizing the space under the battery case as an air exhaust path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the fan is disposed in the upstream of the battery case to circulate air for cooling, then the cooling function is provided, but the air raised in temperature by receiving operation heat of the fan is introduced into the battery case, reducing cooling effectiveness
Solution Approach 1:
The patent inverts the conventional fan placement from upstream to downstream of the battery case. The fan is positioned in the air outlet to suction air from the battery case directly, preventing the introduction of fan-heated air into the battery compartment and thereby improving cooling effectiveness.
2Temperature
If additional air exhaust ducts and components are added to improve air circulation, then the cooling performance is enhanced, but the structure becomes more complex and weight increases
Solution Approach 1:
The patent makes the battery case serve multiple functions: it acts as both the battery housing and the air exhaust duct. The air outlet is directly formed on the battery case, eliminating the need for separate exhaust ducts and reducing overall system weight and complexity.
Solution Approach 2:
The patent merges the battery case and air exhaust duct into a single integrated structure. The battery case itself functions as the exhaust duct, combining two previously separate components into one, thereby reducing weight and structural complexity.
3Productivity
If air inlets are positioned to facilitate cooling, then the cooling efficiency is improved, but the structure requires more components and increased complexity
Solution Approach 1:
The patent divides the air inlet function across multiple locations by providing air inlets on both side wall portions of the battery case. This segmented approach allows air to enter from multiple directions, improving cooling efficiency without requiring complex centralized inlet structures.
4Weight of stationary object
If the battery case structure is simplified to reduce weight, then the overall device weight is reduced, but the air exhaust capability and cooling effectiveness may be compromised
Solution Approach 1:
The patent makes the battery case serve multiple functions including structural housing and air exhaust duct, eliminating the need for separate exhaust components and reducing weight while maintaining exhaust capability.
Solution Approach 2:
The patent inverts the conventional design by forming the air outlet directly on the battery case rather than requiring separate exhaust pathways, simplifying the structure while ensuring effective air exhaust capability.
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 design effectively cools batteries, reduces weight and complexity, and allows for rapid water expulsion in case of submersion, while maintaining compactness and high volumetric efficiency, ensuring efficient battery performance and reduced temperature variations.
Implementation Method 1
a fan for circulating air for cooling the batteries by suctioning air in the battery case
Implementation Method 2
air outside the battery case is introduced into the battery case through the air inlet disposed in each of the pair of facing side wall portions of the battery case, and cools the batteries by being circulated inside the battery case
Data Source
AI summary
A vehicle battery cooling device, which includes: a battery case for housing a plurality of batteries to be mounted on a vehicle; a fan for circulating air for cooling the batteries by suctioning air in the battery case; an air inlet disposed on each of a pair of side wall portions facing each other for introducing air from outside the battery case; and an air outlet disposed on a bottom wall portion of the battery case for exhausting air from the battery case by suctioning of the fan.