Portable EV Charging Gun with Automatic Fault Detection
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Solution Overview
Problem
Traditional charging cabinets for electric vehicles are cumbersome, requiring the vehicle to be moved for debugging and fault detection, and can only determine if a charging fault exists without identifying its location, making the process time-consuming and costly.
Innovation Solution
A portable charging device with a connection unit, low voltage auxiliary power source, power module, and controlling module that automatically detects the charging gun's connection with a peripheral device, converts AC to DC electricity, and includes a leakage detecting module to ensure safety and facilitate movement, while displaying charging status through an interactive interface.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a traditional charging cabinet is used to meet different charging requirements, then charging capability is improved, but device size and mobility are worsened
Solution Approach 1:
The charging system is divided into a portable charging device (charging gun) and a vehicle-side charging cabinet. The charging gun contains essential components (power module, controlling module, low voltage auxiliary power source) to enable independent operation, while the vehicle-side cabinet provides storage and basic functionality. This segmentation allows the charging device to be small and portable while maintaining comprehensive charging capability through coordination with the vehicle-side system.
2Reliability
If a traditional charging cabinet requires vehicle movement for debugging, then charging fault detection is performed, but ease of operation is worsened
Solution Approach 1:
The charging gun is equipped with a controlling module that automatically performs connection detection, communication testing, and fault identification when connected to the vehicle. The system conducts self-diagnosis without requiring external debugging equipment or vehicle movement, enabling operators to simply connect the charging gun to the vehicle charging entrance for automatic verification and fault detection.
3Reliability
If traditional charging cabinets can only detect charging faults exist, then fault detection is performed, but measurement precision is worsened
Solution Approach 1:
The controlling module in the charging gun actively sends detection signals through the charging connection and receives feedback responses from the vehicle-side charging cabinet. By analyzing the feedback information including communication responses, electrical parameters, and connection status, the system precisely identifies not only whether a fault exists but also the specific location and type of fault (e.g., connection fault, communication fault, parameter mismatch).
4Measurement precision
If professional personnel are required to check charging faults, then accurate fault identification is achieved, but loss of time and cost increase
Solution Approach 1:
The charging gun's controlling module automatically performs comprehensive fault detection and identification when connected to the vehicle, eliminating the need for professional personnel to manually check charging systems. The system conducts self-diagnosis of connection status, communication functionality, and electrical parameters, providing accurate fault location and type identification instantly without requiring specialized knowledge or extended debugging time.
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 enables safe and efficient charging by automatically detecting the charging device's working state, identifying faults, and facilitating the charging process, thus reducing time and cost associated with traditional methods.
Implementation Method 1
the power module to convert the AC electricity to the DC electricity
Data Source
AI summary
A charging device may comprise: a charging gun comprising a connection confirming unit and a receiving unit; a low voltage auxiliary power source; a power module configured to convert an AC electricity to a DC electricity; and a controlling module, connected with the charging gun, the low voltage auxiliary power source and the power module respectively, for controlling the low voltage auxiliary power source to supply power to a circuit connected with the controlling module.