Vehicle Battery Cooling via Segmented Intake Ducts
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Solution Overview
Problem
Onboard batteries in vehicles generate excessive heat, requiring improved cooling efficiency to maintain performance, especially in electric vehicles where multiple battery modules are densely packed.
Innovation Solution
The design incorporates multiple intake ducts and fans to introduce cooling air into battery modules, with rectification fins to enhance airflow and distribute cooling efficiently across the battery cells, ensuring uniform cooling and reduced temperature gradients within the housing case.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple battery modules are densely packed to increase electricity storage function, then the electricity-storage capacity is improved, but the heat generation increases and cooling efficiency deteriorates
Solution Approach 1:
The battery system is divided into multiple battery modules (first, second, third, fourth, and fifth battery modules) arranged in different spatial positions. Each module can be cooled independently through dedicated cooling air introduction, allowing segmented heat management while maintaining high overall capacity
Solution Approach 2:
Battery modules are arranged in both longitudinal direction (front to rear) and vertical direction (upper and lower stages). Cooling air is introduced from multiple directions including rearward introduction for upper-stage modules and lateral introduction for lower-stage modules, creating three-dimensional cooling coverage that effectively manages heat in densely packed configuration
2Volume of moving object
If multiple battery modules are disposed in upper and lower stages to increase electricity storage, then the space utilization is improved, but the temperature control difficulty increases
Solution Approach 1:
Upper-stage and lower-stage battery modules are equipped with separate cooling air introduction mechanisms. The first intake unit introduces cooling air to the first and second battery modules, while the second intake unit introduces cooling air to the third and fourth battery modules, enabling independent temperature control for each stage
Solution Approach 2:
Different cooling strategies are applied to different spatial locations. Rearward cooling air introduction is used for upper-stage modules, while lateral cooling air introduction is used for lower-stage modules, optimizing cooling efficiency for each specific position's thermal characteristics
3Power
If battery modules are arranged in series to increase electricity storage, then the voltage capacity is improved, but the heat dissipation challenge increases
Solution Approach 1:
Cooling air is introduced into battery modules before heat accumulation becomes critical. The cooling system is designed to proactively cool battery modules during operation, preventing excessive temperature rise that would affect performance and longevity of high-voltage series-connected cells
Solution Approach 2:
The cooling system operates continuously during battery operation, with cooling air constantly flowing through battery modules to maintain optimal temperature. This continuous cooling action ensures that heat dissipation keeps pace with heat generation in high-power series-connected battery configurations
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 configuration significantly increases cooling efficiency, reduces temperature increases, and maintains optimal performance of battery cells and associated components, while allowing for a more compact and efficient battery housing.
Implementation Method 1
at least one intake duct that introduces cooling air into the battery modules. The cooling air is taken from rearward into the battery modules via the intake duct
Implementation Method 2
The onboard battery may include a fan that is linked to the at least one intake duct
Data Source
AI summary
An onboard battery for a vehicle includes battery modules each including battery cells disposed therein, a housing case that houses the battery modules, and intake ducts that introduce cooling air into the battery modules. The cooling air is taken from rearward into the battery modules via the intake ducts. The battery modules include at least three battery modules, at least two of the battery modules being disposed in upper and lower stages. At least two of the battery modules are arranged along a longitudinal direction. One of the battery modules is disposed at the forefront.