Battery Pack Thermal Management via Segmented Cell Spaces
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Solution Overview
Problem
Medium to large-sized devices requiring battery packs face challenges with overheating due to high power and capacity demands, leading to reduced battery lifetime and efficiency.
Innovation Solution
A battery pack design featuring a holder case with strategically arranged cell spaces, including empty spaces for improved heat dissipation, where battery cells are accommodated in specific groups and the empty spaces facilitate air flow to reduce temperature and enhance thermal management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a plurality of battery cells are embedded in battery packs to increase output power and capacity, then the output voltage and current are improved, but the battery cells may overheat due to large amounts of current
Solution Approach 1:
The holder case is segmented into multiple cell spaces with empty spaces strategically positioned between battery cells. This segmentation creates thermal zones that separate heat-generating components, allowing heat to dissipate through empty spaces rather than accumulating in dense configurations.
Solution Approach 2:
Empty spaces are selectively positioned at specific locations within the holder case where heat accumulation is most problematic. This local quality approach creates targeted thermal management zones rather than uniformly distributing all components, optimizing heat dissipation at critical hot spots.
2Quantity of substance
If battery cells are densely packed to increase capacity, then the energy density is improved, but the heat dissipation efficiency deteriorates
Solution Approach 1:
The holder case structure divides the battery pack into discrete cell spaces separated by empty spaces. This segmentation maintains high capacity by accommodating multiple cells while preventing complete densification, preserving channels for thermal energy escape.
Solution Approach 2:
Empty spaces act as intermediary zones between battery cells, serving as thermal buffers that facilitate heat transfer from high-temperature regions (battery cells) to lower-temperature regions (external environment), improving overall heat dissipation efficiency.
3Temperature
If empty spaces are introduced for heat dissipation, then the temperature control is improved, but the spatial efficiency deteriorates
Solution Approach 1:
Empty spaces are strategically positioned only where thermally critical, rather than uniformly distributed throughout the holder case. This local quality approach maximizes temperature control effectiveness while minimizing the total volume consumed by empty spaces, optimizing spatial efficiency.
Solution Approach 2:
Empty spaces are positioned in three-dimensional space between battery cells arranged in multiple rows and columns. This dimensional arrangement allows heat dissipation pathways to be created without significantly increasing the overall footprint or reducing battery capacity in any single plane.
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 dissipates heat, increasing the battery pack's lifetime and capacity by preventing overheating and optimizing spatial efficiency.
Implementation Method 1
the empty spaces facilitate air flow to reduce temperature and enhance thermal management
Data Source
AI summary
A battery pack including a plurality of battery cells and having improved battery lifetime. The battery pack includes a holder case defining a plurality of cell spaces; and a plurality of battery cells are accommodated in a pattern in a portion of the plurality of cell spaces, wherein some of the plurality of cell spaces are empty.