Battery Box Dry Gas Control for Moisture and Condensation
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Solution Overview
Problem
New energy vehicle battery boxes face issues with external moisture entering, leading to component damage and potential short circuits due to inadequate protection against humidity and pressure differences.
Innovation Solution
A gas processing system with a controller and switch component that supplies dry gas to the battery box based on monitored state parameters, such as humidity and pressure, to maintain a dry environment and prevent condensation, while also providing dry gas to the brake system, utilizing existing components like air compressors and dryers to reduce costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If IP6X and IPX8 protection standards are applied to the battery box, then protection level is improved, but external moisture can still enter the battery box causing component damage and short circuits
Solution Approach 1:
The patent introduces a gas storage container filled with dry gas (such as nitrogen or dried air) that supplies dry gas to the battery box through a gas supply system. This creates an inert dry atmosphere inside the battery box, preventing moisture condensation and protecting components from water damage, thereby solving the limitation of IP6X/IPX8 standards that cannot completely prevent moisture entry.
2Object-affected harmful factors
If a gas storage container and control system are added to supply dry gas to the battery box, then moisture protection is improved, but device complexity increases
Solution Approach 1:
The patent designs the gas storage container to serve multiple functions: it stores dry gas for battery box protection, and also supplies dry gas to the brake system through a second gas flow branch. This multi-functional design reduces the need for separate systems and minimizes overall device complexity while effectively preventing moisture in the battery box.
Solution Approach 2:
The system proactively monitors state parameters (humidity, temperature, pressure) and controls the switch component to supply dry gas before moisture condensation occurs. This preliminary action prevents moisture-related damage before it happens, rather than reacting after damage occurs, thereby improving protection without requiring overly complex real-time intervention systems.
3Object-affected harmful factors
If dry gas is continuously supplied to the battery box, then moisture protection is improved, but energy consumption increases
Solution Approach 1:
The controller monitors state parameters (humidity, temperature, pressure) and controls the switch component to open or close the gas supply based on whether preset conditions are met. This periodic, condition-based gas supply replaces continuous supply, reducing energy consumption while maintaining effective moisture protection in the battery box.
Solution Approach 2:
The system uses feedback from state parameter monitoring (humidity, temperature, pressure sensors) to control the gas supply. When parameters indicate moisture risk, dry gas is supplied; when parameters are normal, supply is reduced or stopped. This feedback-based control optimizes energy usage while maintaining effective moisture protection.
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
Effectively prevents component damage and short circuits by maintaining a dry environment within the battery box, enhancing safety and efficiency while simplifying the vehicle's structure and reducing costs by utilizing existing components.
Implementation Method 1
avoiding the formation of the condensed water caused by moisture condensation
Implementation Method 2
an air compressor 450, a cooler 460, and a dryer 470. A compressed air generated by the air compressor 450
Implementation Method 3
a cooler 460, and a dryer 470. A compressed air generated by the air compressor 450 is cooled by the cooler 460
Implementation Method 4
is cooled by the cooler 460, dried by the dryer 470, and then stored in the gas storage container 410
Data Source
AI summary
Provided are a gas processing system, a control method thereof, and an electrical device. The gas processing system includes: a gas storage container, a controller, and a switch component. The gas storage container has a first gas flow branch configured for communicating with a battery box and supplies a dry gas to the battery box. The controller can acquire a state parameter of a gas in the battery box. The switch component is arranged on the first gas flow branch and can switched between a first state, in which the first gas flow branch is turned on, and a second state, in which the first gas flow branch is blocked. The controller is in communication connection with the switch component, and can control the switch component to be switched from the second state to the first state when the state parameter of the gas acquired satisfies a preset condition.