Battery Box Humidity Control Layer for Corrosion Prevention
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Solution Overview
Problem
Current battery box dehumidification systems are complex and require regular maintenance, failing to effectively control humidity levels, which can lead to corrosion and short-circuiting of electrical components, posing safety risks.
Innovation Solution
A humidity control module with a humidity control layer, first and second gas-permeable layers, and a fixing layer, designed to absorb or release water vapor, preventing liquid water contact and maintaining stable humidity levels within the battery box.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a complex drying apparatus or dehumidification system is provided in the battery box, then water vapor can be removed to some extent, but the structure becomes complex and requires regular maintenance and replacement
Solution Approach 1:
The patent extracts the dehumidification function from complex mechanical systems and implements it through a simple layered structure consisting of a humidity control layer, first gas-permeable layer, and second gas-permeable layer. This layered configuration achieves effective water vapor removal without requiring complex apparatus, directly resolving the contradiction between dehumidification effectiveness and structural simplicity.
Solution Approach 2:
The humidity control layer automatically absorbs or releases water vapor based on ambient humidity conditions without requiring external control systems, power sources, or maintenance. The passive operation of the layered structure eliminates the need for regular maintenance and replacement, addressing the reliability-complexity contradiction.
2Reliability
If a complex drying apparatus or dehumidification system is provided in the battery box, then water vapor can be removed to some extent, but regular maintenance and replacement are required
Solution Approach 1:
The layered humidity control structure operates passively without mechanical moving parts, power consumption, or external control systems. The humidity control layer automatically responds to humidity changes by absorbing or releasing water vapor, eliminating the need for maintenance, repair, or replacement, thus resolving the contradiction between dehumidification effectiveness and ease of repair.
Solution Approach 2:
The patent uses thin film-like gas-permeable layers that allow water vapor transmission while blocking liquid water. These flexible layered structures are inherently durable, resistant to degradation, and require no maintenance, directly addressing the maintenance requirement issue while maintaining effective dehumidification.
3Object-affected harmful factors
If the humidity inside the battery box is too high, then corrosion and short-circuiting risks increase, but existing systems cannot well control the humidity
Solution Approach 1:
The patent applies different functional properties to different layers: the humidity control layer provides selective water vapor absorption/release, the first gas-permeable layer allows vapor passage while blocking liquid water, and the second gas-permeable layer provides additional vapor transmission. This localized functional differentiation enables precise humidity control, reducing corrosion and short-circuiting risks while improving overall humidity control effectiveness.
Solution Approach 2:
The patent combines multiple materials with different properties into a composite layered structure. The humidity control layer uses hygroscopic materials, while the gas-permeable layers use materials with specific permeability characteristics. This composite structure achieves superior humidity control effectiveness compared to single-material systems, directly addressing the contradiction between corrosion prevention and humidity control reliability.
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 module automatically adjusts humidity and temperature, preventing corrosion and short-circuiting, ensuring the stability and performance of electrical components with a simple and reliable structure.
Implementation Method 1
the water vapor inside the battery box will pass through the second gas-permeable layer and the first gas-permeable layer of the humidity control module in sequence because of its own diffusion, then comes into contact with the humidity control layer, and then is absorbed by the humidity control layer
Implementation Method 2
the moisture on the humidity control layer absorbs the heat inside the battery box and is evaporated into water vapor, and the water vapor then passes through the first gas-permeable layer and the second gas-permeable layer in sequence and then diffuses into the internal space of the battery box
Implementation Method 3
the first gas-permeable layer being capable of allowing the passage of the water vapor and preventing the passage of liquid water
Implementation Method 4
the second gas-permeable layer being capable of allowing the passage of the water vapor and the liquid water
Implementation Method 5
the water vapor inside the battery box will pass through the second gas-permeable layer and the first gas-permeable layer of the humidity control module in sequence because of its own diffusion
Data Source
AI summary
A humidity control module includes a humidity control layer configured to absorb or release water vapor, a first gas-permeable layer arranged in a stacked manner on a surface of the humidity control layer and capable of allowing passage of water vapor and preventing passage of liquid water, a second gas-permeable layer arranged in a stacked manner on a surface of the first gas-permeable layer facing away from the humidity control layer and capable of allowing passage of water vapor and liquid water, and a fixing layer arranged on a side of the humidity control layer facing away from the first gas-permeable layer and configured to fix the humidity control layer, the first gas-permeable layer, and the second gas-permeable layer to a carrier.