Cylindrical Battery Pack Layout With Corrugated Heat Transfer Plates
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Solution Overview
Problem
Existing battery packs face challenges in achieving miniaturization while maintaining good heat radiation properties and thermoresponsiveness, especially in varying environmental conditions.
Innovation Solution
A battery pack structure featuring cylindrical batteries arranged in a houndstooth pattern with heat transfer plates formed by conductive corrugated plates, intersecting the battery alignment, and connected to radiators for efficient heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the battery pack is miniaturized to increase battery density, then the battery pack size is reduced, but heat radiation capability deteriorates
Solution Approach 1:
The heat transfer plates extend in multiple directions (first intersection direction and second intersection direction) through the gaps between cylindrical batteries, creating a three-dimensional heat transfer network. This dimensional approach allows efficient heat removal from battery interiors without increasing overall pack volume, resolving the contradiction between miniaturization and heat radiation capability.
Solution Approach 2:
The battery pack is segmented into multiple layers with heat transfer plates inserted between layers and extending through gaps. This segmentation allows heat to be transferred from multiple locations simultaneously, maintaining effective heat radiation capability in a compact configuration.
2Temperature
If heat transfer material is filled between cylindrical batteries, then heat transfer capability is improved, but heat capacity of the battery pack increases
Solution Approach 1:
Instead of filling gaps with heat transfer material that would add heat capacity, the invention extracts heat directly through the existing structural components (heat transfer plates) that contact battery surfaces. This approach maintains heat transfer capability while avoiding the addition of extra heat-storing material.
Solution Approach 2:
The heat transfer plates serve multiple functions: they provide structural support between layers, create heat transfer pathways, and contact multiple batteries simultaneously. This multi-functionality eliminates the need for separate heat transfer materials, reducing overall heat capacity while maintaining heat transfer capability.
3Quantity of substance
If cylindrical batteries are arranged in a houndstooth pattern, then arrangement density is increased, but structural complexity increases
Solution Approach 1:
The heat transfer plates are merged with the battery pack structure itself, extending through gaps between batteries and contacting multiple cells. This integration means the heat transfer system is built into the structural framework rather than being a separate component, reducing overall structural complexity despite the houndstooth arrangement.
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 configuration enhances battery density, reduces heat capacity, and improves heat radiation and thermoresponsiveness, allowing for compact and efficient heat management.
Implementation Method 1
heat transfer plates, wherein each of the heat transfer plates is in contact with side surfaces of the cylindrical batteries arranged on both surfaces of each of the heat transfer plates, is formed by a heat transfer corrugated plate member
Implementation Method 2
a radiator which is arranged on a side of the battery group and is connected with a edge of each of the heat transfer plates
Data Source
AI summary
A partial battery pack structure includes a battery group, heat transfer plates, and a radiator, and is formed by stacking layers. Each layer arranges cylindrical batteries in parallel in a plane. The batteries in adjacent layers have alignment pitches shifted by a half pitch from each other. Each heat transfer plate contacts side surfaces of the batteries on both surfaces of the heat transfer plates, is formed by a heat transfer corrugated plate member, and extends through a gap between the batteries along an alignment direction of the cylindrical batteries in the layers in the plane intersecting center axis lines of the cylindrical batteries, a first intersection direction intersecting the alignment direction or a second intersection direction intersecting the alignment direction and the first intersection direction. The radiator is on a side of the battery group and connects with each heat transfer plate. Each battery contacts two or more heat transfer plates.