Battery End Cap Assembly With Heat Transfer Patch for Cell Cooling
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Solution Overview
Problem
Batteries generate significant heat during charging, discharging, or use, which if not dissipated, can shorten their service life and pose safety hazards due to the lack of effective heat dissipation in existing end cap assemblies.
Innovation Solution
An end cap assembly with a heat transfer member, such as heat transfer gel, integrated into the end cap patch through-holes to facilitate heat exchange with the outside environment, regulating the temperature within the battery cell and improving safety and service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional end cap assembly is used, then structural simplicity is maintained, but heat dissipation performance deteriorates
Solution Approach 1:
The end cap assembly is segmented into multiple functional layers: end cap base, end cap patch with through-holes, and heat transfer members. This segmentation allows each layer to perform its specific function (structural support, heat transfer pathway, thermal conduction) while collectively achieving superior heat dissipation without excessive overall complexity
Solution Approach 2:
Heat transfer members are introduced as intermediary elements between the battery cell and the external environment. These members fill the through-holes in the end cap patch and serve as thermal conduits, enabling efficient heat transfer from the battery interior to the exterior without requiring direct contact between the battery and external cooling systems
2Temperature
If heat transfer members are added to improve heat dissipation, then temperature regulation is improved, but manufacturing complexity increases
Solution Approach 1:
The end cap patch with through-holes is prepared in advance during the end cap manufacturing process. The through-holes are pre-formed with appropriate dimensions and positions to accommodate heat transfer members, allowing the heat transfer components to be easily installed in subsequent assembly steps without requiring complex post-processing or precision alignment procedures
Solution Approach 2:
The end cap patch is designed with a porous structure containing multiple through-holes. This porous configuration provides predefined pathways for heat transfer members while maintaining the structural integrity of the end cap. The regular pattern and standardized dimensions of the through-holes facilitate automated manufacturing and assembly processes
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 integration of heat transfer members in the end cap assembly enhances heat dissipation, thereby extending battery life and ensuring safety by effectively managing temperature within the battery cell.
Implementation Method 1
The end cap exchanges heat with the outside through the heat transfer member, so as to regulate a temperature inside the battery cell
Data Source
AI summary
Embodiments of this application provide an end cap assembly, a battery cell, a battery, and an electrical device. The end cap assembly may be applicable to the battery cell. The end cap assembly may include: an end cap; and an end cap patch attached to the end cap. At least one through-hole may be made on the end cap patch. The through-hole may be configured to be filled with a heat transfer structure. The end cap may exchange heat with the outside through the heat transfer structure so as to regulate a temperature inside the battery cell.