Assembled Battery Insulation Holes for Heat Dissipation Control
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Solution Overview
Problem
Existing assembled batteries face challenges in efficiently dissipating heat during normal use and preventing thermal runaway, with complex designs and fabrication processes, and lack effective means to inhibit heat transfer between battery cells.
Innovation Solution
The solution involves covering the peripheral surfaces of battery cells with an insulating material having holes, combined with a heat dissipation member, to facilitate efficient heat transfer and prevent thermal runaway, while using a flameproof material to enhance safety and simplify the design and fabrication process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a block made of metallic material is used to hold battery cells, then heat can be rapidly diffused, but the design and fabrication become complicated due to multiple separated parts and heat insulators
Solution Approach 1:
The patent combines the heat dissipation function and the holding function into a single integrated battery case structure. The case directly contacts the battery cells and provides heat dissipation without requiring separate metallic blocks or additional heat insulators, thereby simplifying the overall structure while maintaining effective heat management.
Solution Approach 2:
The battery case serves multiple functions simultaneously: it holds the battery cells in position, provides heat dissipation pathways, and acts as a structural enclosure. This multi-functional design eliminates the need for separate dedicated heat dissipation components, reducing structural complexity.
2Temperature
If gap dimensions between block and battery cells are regulated, then heat transfer is controlled, but design must be customized for each application
Solution Approach 1:
The battery case is designed with a universal structure that can accommodate different battery cell configurations and applications. The integrated design with built-in heat dissipation pathways does not require customization of gap dimensions for different applications, providing both heat transfer control and design versatility.
3Reliability
If insulating material covers battery cell peripheral surfaces, then electrical insulation is provided, but heat dissipation efficiency is reduced
Solution Approach 1:
The battery case provides localized heat dissipation pathways at specific contact points with the battery cells, while insulating material can be applied in other areas where electrical insulation is prioritized. This spatial differentiation allows simultaneous achievement of electrical insulation and heat dissipation efficiency.
Solution Approach 2:
The battery case may utilize composite material structures that combine thermal conductivity and electrical insulation properties, or employ multi-layer constructions where different materials serve different functions - providing both heat dissipation and electrical insulation in an integrated manner.
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 allows for effective heat dissipation and prevention of thermal runaway during normal use and abnormal conditions, simplifying the design and fabrication of assembled batteries and battery packs, and preventing heat propagation between cells.
Implementation Method 1
an insulating material covering the peripheral surface of the battery cells... a heat dissipation member covering the peripheral surface of the battery cells which are covered with the insulating material
Implementation Method 2
heat dissipation member covering the peripheral surface of the battery cells
Implementation Method 3
heat dissipation member covering the peripheral surface of the battery cells which are covered with the insulating material
Implementation Method 4
an assembled battery in which a plurality of battery cells is connected serially or in parallel... in case where abnormal heat generation has occurred... the burning can be prevented or inhibited from spreading to adjoining battery cells
Data Source
AI summary
An assembled battery in which a plurality of battery cells is connected serially or in parallel, the battery cells each having an electrode surface having an electrode and a peripheral surface orthogonal to the electrode surface and being disposed such that the peripheral surfaces face each other. The assembled battery contains the battery cells, an insulating material covering the peripheral surface of the battery cells, and a heat dissipation member covering the peripheral surface of the battery cells which is covered with the insulating material. The insulating material has a plurality of holes piercing the insulating material from a surface thereof facing the battery cells to a surface thereof facing the heat dissipation member.