Battery Module Internal Plate Structure for Heat Dissipation Isolation
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Solution Overview
Problem
The existing battery modules face challenges in preventing fires or explosions between secondary batteries and improving cooling efficiency, especially when densely packed in medium and large devices.
Innovation Solution
A battery module design featuring can-type secondary batteries arranged horizontally, connected by a bus bar, and housed in module cases with ribs and an internal plate that enhances heat dissipation and prevents thermal runaway.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If secondary batteries are densely arranged to increase capacity and output power, then the battery module achieves higher energy density and smaller volume, but heat accumulation increases and cooling efficiency deteriorates
Solution Approach 1:
The module case is divided into multiple ribs that protrude inward, creating segmented cooling channels between the ribs and the internal plate. This segmentation allows heat to be dissipated through multiple pathways rather than accumulating in a single space, resolving the contradiction between dense battery arrangement and heat dissipation.
Solution Approach 2:
The internal plate acts as an intermediary thermal management component positioned between the densely arranged batteries and the external environment. It provides a large surface area for heat transfer and conducts heat away from the batteries through its contact with the ribs and module case, enabling efficient cooling without increasing the overall module volume.
2Volume of moving object
If secondary batteries are disposed very adjacent to each other to reduce volume, then space utilization improves, but fire or explosion spreads easily between adjacent batteries
Solution Approach 1:
The module case with protruding ribs and the internal plate create physical segmentation and spacing between adjacent batteries. This segmentation prevents direct contact between batteries while maintaining dense arrangement, so that if one battery experiences fire or explosion, the flame and heat are contained within its own compartment and cannot easily spread to adjacent batteries.
Solution Approach 2:
The ribs and internal plate serve as intermediary protective structures between adjacent batteries. These components act as thermal and flame barriers that isolate each battery unit, allowing dense packing while maintaining fire safety through the intermediary protective elements.
3Productivity
If module cases are stacked closely to improve space utilization, then manufacturing efficiency increases, but heat dissipation becomes more difficult
Solution Approach 1:
The internal plate and ribs create localized cooling zones around each battery or group of batteries within the module case. This local quality approach ensures that heat dissipation is optimized at each local position rather than relying on uniform cooling, allowing efficient heat removal even when module cases are stacked closely together for high-density manufacturing.
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 design effectively improves cooling efficiency by dissipating heat through the internal plate and ribs, while also preventing the spread of flames or gases between module cases, thereby enhancing the stability and safety of the battery module.
Implementation Method 1
improves cooling efficiency by dissipating heat through the internal plate and ribs
Data Source
AI summary
A battery module protects an internal configuration from external impact and effectively prevents internal short circuiting. The battery module includes a plurality of can type secondary batteries arranged to be disposed in a horizontal direction; a bus bar at least partially formed of an electrically conductive material to be electrically connected with the plurality of can type secondary batteries; at least two or more module cases with an empty space defined therein to accommodate the plurality of can type secondary batteries therein, the two or more module cases including an outer wall surrounding the empty space inside and at least two or more ribs protruding from the outer wall in an outward direction, and configured to be stacked in a direction in which the can type secondary batteries are disposed; and an internal plate interposed between the two or more module cases and configured to be erected in a direction perpendicular to the horizontal direction in which the module cases are stacked.