Multi-Plane Battery Cooling Plates for Compact Heat Dissipation
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Solution Overview
Problem
Existing cooling systems for traction batteries in motor vehicles are inefficient and lack a compact design, failing to effectively dissipate heat from battery cells arranged in multiple planes.
Innovation Solution
A device with a first cooling plate between two battery cell planes and additional cooling plates within each plane, featuring intricate flow channels and sub-channels to facilitate efficient heat dissipation with a compact structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cooling elements are arranged in the interstices of the densest packing of the battery cells, then the cooling system can contact the battery cells, but the structure becomes complex and space utilization is inefficient
Solution Approach 1:
The cooling system is divided into multiple independent cooling plates, each responsible for cooling specific battery cell planes. The first cooling plate cools battery cells in one plane, while second cooling plates cool battery cells in other planes. This segmentation allows each cooling plate to be optimally designed for its specific function, improving cooling effectiveness while maintaining structural simplicity.
Solution Approach 2:
The patent transitions from arranging cooling elements in the interstices between densely packed cells to placing cooling plates directly between battery cell planes and within planes. This dimensional reorganization allows the cooling system to operate in the plane dimension rather than fitting into interstitial spaces, simplifying the overall structure while improving thermal contact.
2Reliability
If multiple cooling plates are used to cool battery cells in multiple planes, then cooling effectiveness is improved, but the device complexity increases
Solution Approach 1:
The first cooling plate serves multiple functions: it cools battery cells in the first plane, provides structural support between planes, and serves as a mounting platform for the second cooling plates. This multi-functionality reduces the need for additional separate components, thereby improving cooling effectiveness while limiting the increase in device complexity.
3Productivity
If cooling fluid flows through multiple channels and sub-channels in the cooling plates, then heat dissipation efficiency is improved, but the manufacturing complexity increases
Solution Approach 1:
The fluid flow path is segmented into main flow channels and sub-channels, with each channel serving specific cooling zones. The first cooling plate contains flow channels for general cooling, while second cooling plates contain sub-channels for targeted cooling of specific battery cells. This segmentation optimizes heat dissipation efficiency by directing cooling fluid to where it is most needed, while the modular channel design facilitates manufacturing.
4Quantity of substance
If the cooling system is designed to cool battery cells arranged in at least two battery cell planes, then the battery pack capacity is increased, but the space utilization becomes challenging
Solution Approach 1:
The cooling system utilizes the vertical dimension by placing the first cooling plate between battery cell planes and positioning second cooling plates within specific planes. This three-dimensional arrangement allows efficient cooling of multi-plane battery configurations without significantly increasing the overall volume, thereby supporting increased battery capacity while maintaining compact space utilization.
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
Ensures effective cooling of battery cells in multiple planes with a compact design, enhancing heat dissipation efficiency and ensuring homogeneous fluid distribution.
Implementation Method 1
a first cooling plate (14), which is arranged between a first battery cell plane (11) and a second battery cell plane (12) and is in thermal contact with the battery cells (13) of the first battery cell plane (11) and in thermal contact with the battery cells (13) of the second battery cell plane (12)
Implementation Method 2
a cooling fluid inlet (16a), which is formed on a first side of the first cooling plate (14), and a cooling fluid outlet (16b), which is formed on a second side of the first cooling plate (14)
Data Source
AI summary
A device for cooling battery cells of a traction battery which are arranged in at least two battery cell planes positioned one on top of the other. The device includes a first cooling plate which is arranged between a first battery cell plane and a second battery cell plane and is in thermal contact with the battery cells of the first and the second battery cell plane. Second cooling plates are arranged within the first and the second battery cell plane and are in thermal contact with multiple battery cells of the respective battery cell plane. A cooling fluid inlet is formed on a first side of the first cooling plate. A cooling fluid outlet is formed on a second side of the first cooling plate. The cooling fluid flows from the cooling fluid inlet into the first cooling plate on the first side of the first cooling plate.