Battery Support Beam Venting for Electrolyte Leak Isolation
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Solution Overview
Problem
The pressure relief mechanism in batteries is prone to electrolyte solution leaks, which can lead to insulation failure and potential accidents if the leaked solution is not discharged in time.
Innovation Solution
A support beam with a liquid discharge cavity and inlet is integrated into the battery's accommodation cavity, allowing the leaked electrolyte solution to be directed into the discharge cavity, with additional ports and collection cavities to facilitate timely and efficient discharge.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pressure relief mechanism is added to the battery, then safety is improved, but the risk of electrolyte leakage increases
Solution Approach 1:
The harmful electrolyte liquid is extracted from the accommodation cavity through dedicated discharge channels (first discharge channel in the support beam, second discharge channel in the bottom wall) and collected in a separate collection cavity, isolating it from the battery cells and preventing insulation failure
Solution Approach 2:
A support beam is introduced as an intermediary structure that provides both mechanical support and integrated liquid discharge functionality. The support beam contains the first discharge channel that connects the accommodation cavity to the liquid collection cavity, serving as a mediator to safely transport leaked electrolyte away from sensitive components
2Stress or pressure
If electrolyte solution is discharged into the accommodation cavity, then pressure relief is achieved, but insulation failure occurs due to liquid accumulation
Solution Approach 1:
Discharge channels are pre-established in the support beam and bottom wall before any leakage occurs. The first discharge channel is built into the support beam structure, and the second discharge channel is provided in the bottom wall, creating ready-made pathways for electrolyte discharge that activate automatically when pressure relief is needed
Solution Approach 2:
The harmful electrolyte liquid is extracted from the accommodation cavity through dedicated discharge channels (first discharge channel in the support beam, second discharge channel in the bottom wall) and collected in a separate collection cavity, isolating it from the battery cells and preventing insulation failure
3Area of stationary object
If the liquid inlet is positioned higher, then discharge coverage is improved, but discharge efficiency decreases
Solution Approach 1:
The discharge system utilizes multiple spatial dimensions by providing both a first discharge channel in the support beam and a second discharge channel in the bottom wall, creating a three-dimensional discharge network that efficiently collects liquid from various levels and positions throughout the accommodation cavity
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 solution effectively prevents insulation failure by ensuring timely discharge of leaked electrolyte, reducing the risk of electrical connections and enhancing safety by minimizing liquid accumulation.
Implementation Method 1
the liquid inlet is lower than the pressure relief mechanism along a height direction of the support beam
Data Source
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AI summary
This application discloses a battery and an electrical device. The battery includes: a box, where an accommodation cavity is disposed in the box; a battery cell, disposed in the accommodation cavity, where the battery cell is provided with a pressure relief mechanism; and a support beam, where the support beam is disposed in the accommodation cavity, the support beam is provided with a liquid discharge cavity and a liquid inlet, and the liquid inlet communicates to the liquid discharge cavity so that a liquid in the battery cell discharged into the accommodation cavity through the pressure relief mechanism is able to be discharged from the liquid inlet into the liquid discharge cavity.