Battery Cell Insulator With Thermal Bridge to End Cap
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Solution Overview
Problem
The service life of battery cells is compromised due to inadequate heat dissipation during charge/discharge cycles, as conventional insulators fail to efficiently transfer heat away from the electrode assembly to the end cap.
Innovation Solution
A thermally conductive member is embedded within the insulator and attached to the end cap, enhancing heat transfer efficiency by reducing the distance and increasing the contact area between the electrode assembly and the end cap, thereby facilitating better heat dissipation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an insulator is used to isolate the end cap from the electrode assembly, then electrical insulation is improved, but heat transfer efficiency deteriorates
Solution Approach 1:
The insulator is designed as a composite structure combining an insulating base material with embedded thermally conductive members. This composite configuration allows the insulator to simultaneously provide electrical insulation through the base material while achieving effective heat transfer through the thermally conductive members that are in contact with both the electrode assembly and the end cap.
Solution Approach 2:
The thermally conductive members embedded in the insulator act as intermediary elements that bridge the thermal gap between the electrode assembly and the end cap. These intermediaries facilitate heat transfer while the insulating material surrounding them maintains electrical isolation, thus resolving the contradiction between insulation and heat dissipation.
2Temperature
If the distance between the electrode assembly and the end cap is reduced to improve heat dissipation, then heat transfer efficiency is improved, but electrical insulation performance deteriorates
Solution Approach 1:
The insulator structure employs local quality differentiation where thermally conductive members are strategically positioned in specific locations to enhance heat transfer, while the surrounding insulating material maintains electrical isolation. This localized functional differentiation allows simultaneous optimization of both heat dissipation and electrical insulation without requiring uniform material properties throughout.
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 significantly improves the heat dissipation performance of the battery cell, prolonging its service life by effectively managing heat and maintaining a reasonable operating temperature.
Implementation Method 1
a thermally conductive member embedded in the insulator, the thermally conductive member being configured to be attached to the end cap
Data Source
AI summary
Provided are a battery cell, a battery, a power consuming apparatus, and a method and apparatus for manufacturing the battery cell, relating to the technical field of batteries. The battery cell includes a housing, an electrode assembly, an end cap, an insulator and a thermally conductive member. The housing is provided with an opening. The electrode assembly is configured to be accommodated in the housing. The end cap is configured to cover the opening. The insulator is located on the side of the end cap facing the electrode assembly, and the insulator is configured to isolate the end cap from the electrode assembly. The thermally conductive member is embedded in the insulator, and the thermally conductive member is configured to be attached to the end cap. Heat generated by the electrode assembly may be transferred to the end cap through the thermally conductive member.