EV Charging Device Combustible Gas Sensor Safety Control
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Solution Overview
Problem
The proximity of combustible gases to electric vehicle charging stations increases the risk of undesirable ignition, posing a safety hazard and leading to potential damage and increased maintenance costs.
Innovation Solution
A charging device equipped with a sensor to detect combustible gases and a controller that selectively delivers power to an electric vehicle only if the gas concentration is below a predefined threshold, thereby reducing the risk of ignition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If power is continuously delivered to electric vehicles at charging stations, then charging efficiency and productivity are improved, but the risk of igniting combustible gases increases
Solution Approach 1:
The system performs preliminary monitoring of combustible gas concentrations before initiating power delivery to the electric vehicle. The controller checks gas levels in advance and only permits charging when concentrations are below the threshold, preventing ignition risk before it can occur while maintaining charging efficiency when conditions are safe.
Solution Approach 2:
The system continuously monitors combustible gas concentrations during power delivery and provides feedback to the controller. When gas concentrations approach or exceed the threshold, the controller automatically adjusts or terminates power delivery, creating a closed-loop safety mechanism that balances charging productivity with ignition risk prevention.
2Reliability
If combustible gas monitoring is implemented at charging stations, then safety against ignition is improved, but device complexity increases
Solution Approach 1:
The system introduces a combustible gas sensor as an intermediary monitoring device that detects gas concentrations and communicates findings to the controller. This intermediary component enables safety monitoring without requiring complex control mechanisms, as the sensor provides straightforward concentration data that the controller uses to make binary safety decisions.
Solution Approach 2:
The system monitors a specific parameter (combustible gas concentration) and compares it against a predefined threshold value. When the parameter exceeds the threshold, the system changes its operational state by preventing or terminating power delivery. This parameter-based approach simplifies the control logic compared to more complex safety systems.
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 reduces the risk of combustible gas ignition, minimizing damage to the charging device and associated costs, while ensuring safe and efficient power delivery to electric vehicles.
Implementation Method 1
A sensor is configured to sense a combustible gas and to generate a first monitoring signal indicative of the sensed combustible gas
Data Source
AI summary
A method of delivering power from a power supply to an electric vehicle is described herein. The method includes receiving a request to deliver power from the power supply to the electric vehicle. A first monitoring signal indicative of a combustible gas is transmitted from a sensor to a controller. The controller determines whether electrical power is to be delivered, from a charging device to the electric vehicle, based at least in part on the received first monitoring signal.