Pipe-Shaped Battery Cell With Hollow Electrode Stack
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Cylindrical batteries face challenges in dissipating heat generated during charging and discharging, leading to reduced lifespan and potential fires or explosions due to inadequate cooling performance.
Innovation Solution
A battery cell design featuring a hollow electrode stack and a pipe-shaped battery case allows for smooth heat circulation by enabling coolant flow along the exterior and interior, with the electrode stack extending vertically to restrain swelling and improve performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a cylindrical battery uses a traditional solid electrode stack structure, then the battery can be manufactured easily and maintain structural integrity, but heat generated during charging and discharging cannot be dissipated effectively, leading to reduced lifespan and potential safety issues
Solution Approach 1:
The electrode stack is divided into multiple segments with cooling channels created between them. This segmentation allows coolant to flow through the battery cell, enabling effective heat dissipation from the electrode stack while maintaining structural integrity through the segmented design.
Solution Approach 2:
A cooling channel is introduced as an intermediary structure between the electrode stack segments. This cooling channel serves as a mediator that facilitates heat transfer from the electrode stack to the coolant, enabling effective thermal management without compromising the battery's structural integrity.
2Temperature
If cooling channels are added to the battery structure, then heat dissipation is improved, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The cooling channels are merged with the electrode stack structure itself, rather than being separate components. The electrode stack segments are designed to incorporate cooling channels within their structure, combining the structural and thermal management functions into a single integrated component, thereby reducing overall device complexity.
Solution Approach 2:
The electrode stack segments serve multiple functions: they provide structural support for the battery while simultaneously incorporating cooling channels for thermal management. This multi-functionality reduces the need for separate cooling components, simplifying the overall battery structure despite the added cooling capability.
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 enhances cooling efficiency and effectively manages electrode swelling, thereby extending battery lifespan and preventing thermal-related issues.
Implementation Method 1
heat circulation in the battery cell is smoothly carried out
Implementation Method 2
cooling efficiency is thus greatly improved
Data Source
AI summary
Disclosed herein is a battery cell configured to have a structure in which an electrode stack, which is configured to have a structure in which positive electrodes and negative electrodes are stacked in the height direction on the basis of the ground in the state in which separators are disposed respectively between the positive electrodes and the negative electrodes, is mounted in a battery case in a sealed state, the battery case is formed in a pipe shape having a hollow part, and the electrode stack is formed in a shape corresponding to the shape of the battery case.