Battery Module Heat Sink Integration for Cooling and Rigidity
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Solution Overview
Problem
Conventional battery modules face challenges in effectively dissipating heat generated during charging and discharging, leading to accelerated deterioration and increased risk of explosion or ignition, particularly in high-temperature conditions, and require improved cooling performance to ensure structural stability.
Innovation Solution
A battery module design incorporating a module frame with protruded parts and a heat sink integrated with the bottom portion, forming a direct refrigerant flow path, and a welding structure to enhance structural rigidity and cooling efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a conventional battery module uses separate cooling components positioned below the module frame, then cooling function is provided, but heat dissipation efficiency is reduced due to air gaps and complicated heat transfer paths
Solution Approach 1:
The patent merges the cooling structure with the module frame by making the bottom portion of the module frame constitute an upper plate of the heat sink, eliminating separate cooling components and reducing air gaps in the heat transfer path. This integration directly improves heat dissipation efficiency while simplifying the overall structure.
2Stability of the object's composition
If the module frame and end plates are loosely assembled, then assembly is easy, but structural rigidity is insufficient
Solution Approach 1:
The patent incorporates protruded parts on the module frame and corresponding recesses on the end plates that are pre-formed during manufacturing. These features automatically align and guide the end plates during assembly, ensuring proper positioning and rigid connection without requiring complex assembly procedures or additional fastening steps.
3Strength
If welding parts are positioned without protruded parts, then manufacturing is simpler, but structural rigidity at welding locations is insufficient
Solution Approach 1:
The patent adds protruded parts only at specific locations where welding is required, rather than uniformly throughout the entire frame. These localized protrusions provide enhanced structural rigidity precisely at the welding joints where it is most needed, while minimizing the overall increase in structural complexity.
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 integrated structure improves cooling performance, reduces costs, increases capacity and output, and enhances structural rigidity, while minimizing air gaps for efficient heat dissipation and reducing the risk of explosion or ignition.
Implementation Method 1
a heat sink positioned under a bottom portion of the module frame of the module frame. The bottom portion constitutes an upper plate of the heat sink
Implementation Method 2
forming a direct refrigerant flow path
Data Source
AI summary
A battery module includes a battery cell stack in which a plurality of battery cells are stacked; a module frame accommodating the battery cell stack; an end plate positioned on a front surface and a rear surface of the battery cell stack; and a heat sink positioned under a bottom portion of the module frame. The bottom portion constitutes the upper plate of the heat sink. The module frame includes a first module frame protruded part and a second module frame protruded part formed by protruding a part of the bottom portion, and the first module frame protruded part and the second module frame protruded part are positioned to be spaced apart from each other. A welding part where the end plate and the module frame are welded is positioned between the first module frame protruded part and the second module frame protruded part.