Battery Cell Surface Layout to Isolate Vent Emissions From Terminals
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing battery technologies face challenges in preventing emissions from pressure relief structures from reaching electrical connection terminals, leading to insulation failures and high-voltage arcing.
Innovation Solution
The battery design includes a pressure relief structure and electrical connection terminal positioned on different surfaces of each cell, effectively preventing emissions from reaching the terminal and reducing the risk of insulation failure and high-voltage arcing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the pressure relief structure and electrical connection terminal are positioned on the same surface of the cell, then the structure is simpler, but emissions from the pressure relief structure can flow into the electrical connection region causing insulation failure and high-voltage arcing
Solution Approach 1:
The patent applies dimensional separation by positioning the pressure relief structure on one end surface of the cell while placing the electrical connection terminal on a different surface (side surface or opposite end surface). This spatial arrangement in three-dimensional space prevents emissions discharged from the pressure relief structure from reaching the electrical connection terminal, thereby eliminating the risk of insulation failure and high-voltage arcing while maintaining structural simplicity
2Reliability
If the pressure relief structure and electrical connection terminal are positioned on different surfaces of the cell, then emissions are prevented from reaching the terminal improving safety, but the structural arrangement becomes more complex
Solution Approach 1:
The patent utilizes three-dimensional spatial arrangement to position the pressure relief structure and electrical connection terminal on different surfaces of the cell. Specifically, the pressure relief structure is located on one end surface while the electrical connection terminal is positioned on a side surface or the opposite end surface. This dimensional separation effectively prevents emissions from reaching the terminal, improving insulation reliability while the overall cell structure remains relatively simple and manufacturable
Data Source
AI summary
A battery and an electrical device are provided. The battery includes at least one cell group. Each of the at least one cell group includes two cell rows. Each of the two cell rows includes at least one cell. In one cell group, each of the at least one cell in one of the two cell rows has a first end surface facing towards another one of the two cell rows. The first end surface is provided with a pressure relief structure. The cell has an electrical connection terminal at a surface of the cell other than the first end surface.