Elastic Holding Heat Dissipating Structure for Battery Leakage Risk
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Solution Overview
Problem
Existing heat dissipating structures for lithium vehicle batteries face issues such as adhesiveness deterioration between battery cells and cooling water flow areas, leading to potential liquid leakage and the need for discarding heat conductive members with battery replacements, which hampers efficient heat dissipation, especially at high temperatures.
Innovation Solution
A heat dissipating structure that includes elastically deformable rubber-like holding members to detachably attach to battery cells, providing enhanced contact and reducing leakage risks, with additional heat dissipating plates in gaps between cells for improved thermal conductivity and efficient heat transfer to a cooling member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a heat conductive member is bonded to the sealed parts of battery cells, then heat dissipation is improved, but the heat conductive member must be discarded with battery replacement and leakage risk increases
Solution Approach 1:
The patent introduces a heat dissipating structure as an intermediary component that indirectly contacts the battery cells through holding members rather than directly bonding to sealed parts. This mediator structure transfers heat while avoiding direct attachment to battery seals, thereby reducing leakage risk while maintaining heat dissipation effectiveness
Solution Approach 2:
The heat dissipating structure is divided into separate functional components: holding members for attachment and a heat dissipating body for thermal management. This segmentation allows the holding members to detachably secure the structure to battery cells without requiring permanent bonding to sealed parts, enabling replacement without discarding the entire heat dissipating structure
2Temperature
If adhesive rubber sheet is used between battery cells and housing, then heat dissipation is improved, but adhesiveness deteriorates at high temperatures
Solution Approach 1:
The patent transitions from relying on adhesive strength to using mechanical holding forces through elastic deformation of holding members. This parameter change from chemical bonding to mechanical constraint maintains attachment strength at high temperatures where adhesive properties deteriorate
Solution Approach 2:
The holding members are designed to elastically deform and adapt to battery cell positions, providing dynamic mechanical attachment rather than static adhesive bonding. This elastic mechanism maintains holding force across temperature variations without suffering from adhesive breakdown
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 structure effectively promotes heat dissipation from battery cells while minimizing the risk of liquid leakage and allowing for easy detachment, enhancing thermal conductivity and maintaining performance even at high temperatures.
Implementation Method 1
holding members that detachably hold end parts of the respective battery cells, wherein the holding members are mainly made of a rubber-like elastic body
Implementation Method 2
a heat dissipating structure that is provided between battery cells and a cooling member, and conducts heat from the battery cells to the cooling member to promote heat dissipation from the battery cells
Data Source
AI summary
Provided are a heat dissipating structure that deforms to detachably come close contact with the battery cells, is disposed between the battery cells and a cooling member in order to reduce a risk of leakage of liquid inside the battery cells, and is excellent in heat dissipating property, and a battery including the heat dissipating structure. The present invention relates to a heat dissipating structure that is provided between battery cells and a cooling member, conducts heat from the battery cells to the cooling member to promote heat dissipation from the battery cells, and includes holding members detachably holding end parts of the respective battery cells, and to a battery including the heat dissipation structure.