Battery Box Liquid Drainage Valve for Condensation and Leak Response
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Solution Overview
Problem
Existing lithium-ion batteries face safety concerns due to liquid leakage and condensation, which can lead to short circuits and reduced reliability.
Innovation Solution
A liquid drainage mechanism with a valve body, cover assembly, and actuation assembly that responds to liquid entry by opening to discharge it, utilizing deformable members and elastic connection members for quick and selective drainage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a liquid drainage mechanism is added to the battery box, then the safety and reliability are improved, but the device complexity increases
Solution Approach 1:
The liquid drainage mechanism is segmented into distinct functional components: a valve body with accommodating cavity, a cover assembly with movable cover, and an actuation assembly with deformable member. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The deformable member automatically expands upon contact with liquid, triggering the drainage process without external intervention. This self-actuating mechanism improves battery safety by responding autonomously to liquid intrusion while avoiding the need for complex control systems or additional actuators.
2Speed
If a deformable member is used for quick liquid response, then the reaction speed is improved, but the device complexity increases
Solution Approach 1:
The deformable member utilizes a change in physical state or properties upon contact with liquid, expanding in volume to trigger the drainage mechanism. This parameter change approach enables rapid response to liquid intrusion without requiring complex sensing or actuation systems, maintaining simplicity while achieving fast reaction speed.
3Productivity
If the cover assembly moves away from the opening portion to form drainage channel, then the liquid drainage speed is improved, but the space occupation increases
Solution Approach 1:
The drainage channel is formed by moving the cover assembly in a direction away from the opening portion, utilizing spatial dimensionality to create an efficient drainage path. This dimensional approach allows rapid liquid evacuation while optimizing the space occupied by the mechanism within the battery box structure.
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
Enhances the safety and reliability of lithium-ion batteries by efficiently discharging liquids, reducing the risk of short circuits and improving the responsiveness to environmental changes.
Implementation Method 1
the deformable member is configured to absorb the liquid and expand
Implementation Method 2
the connection member is configured to apply an elastic force to the cover assembly
Data Source
AI summary
A liquid drainage mechanism includes: a valve body, the valve body being provided with an accommodating cavity, a liquid intake portion and an opening portion, the liquid intake portion and the opening portion being both in communication with the accommodating cavity; a cover assembly movably disposed on the opening portion; and an actuation assembly disposed in the accommodating cavity, the actuation assembly being configured to be actuated in response to a liquid entering the accommodating cavity through the liquid intake portion, so as to move the cover assembly to at least partially open the opening portion.