Lithium Battery Cooling Structure With Tapered Passage Slots
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Solution Overview
Problem
Conventional cooling structures for lithium ion secondary battery systems have low heat radiation efficiency due to air flowing through long paths between the main frame and partitioning frame, which hampers effective cooling of lithium battery unit cells.
Innovation Solution
The cooling structure incorporates passage slots in the sides of the main frame to direct airflow directly to the lithium battery unit cells, forming secondary cooling channels that communicate with the lattice-shaped paths, and limits these slots to a tapered shape to enhance heat radiation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If air flows through the cooling channel formed between the main frame and partitioning frame, then the battery can be cooled, but the heat radiation efficiency is low due to the long airflow path
Solution Approach 1:
The cooling system is segmented into multiple independent cooling channels formed by dividing the frame structure into main frames and partitioning frames. This segmentation creates multiple shorter airflow paths, allowing air to reach different battery regions more efficiently and reducing the overall path length while maintaining comprehensive cooling coverage.
Solution Approach 2:
The invention introduces a lateral dimension to the cooling airflow by forming cooling channels between the main frame and partitioning frame. This creates a three-dimensional cooling network that reduces airflow path length by utilizing vertical and lateral spaces, rather than relying solely on horizontal airflow paths.
2Temperature
If the frame structure is designed with lattice-shaped paths for cooling, then heat radiation is improved, but the structural complexity increases
Solution Approach 1:
The frame structure serves multiple functions simultaneously: it provides mechanical support for the battery, creates cooling channels through its lattice design, and facilitates heat radiation. By integrating these functions into a single structure, the invention reduces overall system complexity while achieving effective cooling and heat dissipation.
Solution Approach 2:
The cooling channels and structural frame are merged into a single integrated component. The lattice-shaped frame structure itself forms the cooling channels, eliminating the need for separate cooling ducts or channels, thereby reducing device complexity while maintaining heat radiation efficiency.
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 significantly improves cooling efficiency by allowing direct airflow to the battery unit cells along the shortest path, enhancing the stability and performance of the battery system.
Implementation Method 1
air, blown by a cooling fan, to cool the lithium battery unit cells while passing through the cooling channels and the lattice-shaped paths
Data Source
AI summary
The present invention relates to a cooling structure of a lithium ion secondary battery system. The cooling structure of a lithium ion secondary battery system according to the present invention provides cooling channels for lithium battery unit cells accommodated by a laterally partitioned arrangement of main frames, each having a heat radiation part and lattice-shaped paths, and partitioning frames, and allows air, blown by a cooling fan, to cool the lithium battery unit cells while passing through the cooling channels and the lattice-shaped paths. Each of the main frames has a pair of passage slots formed in both sides thereof to allow the air blown by the cooling fan to be directly blown to each accommodated lithium battery unit cell, thus forming each secondary cooling channel communicating with the pair of passage slots.