Vehicle Charging Cable Current Limiting for Household Sockets
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Solution Overview
Problem
Household sockets, lacking communication lines, often lead to overloading and repeated tripping of fuses during electric vehicle charging, as they lack the ability to communicate and manage charging currents effectively.
Innovation Solution
A supply cable equipped with a detection apparatus and limiting unit that monitors and adjusts the electrical current to prevent overloading by detecting interruptions and setting a maximum current value based on pre-interruption levels, thereby avoiding fuse tripping and ensuring safe charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a household socket is used for charging the electric vehicle, then charging convenience is improved, but the risk of fuse tripping increases due to overloading
Solution Approach 1:
The detection apparatus performs preliminary monitoring of the electrical current before the fuse can trip, detecting interruptions or overloading conditions in advance. This allows the system to take preventive action by limiting the current to a safe maximum value, thereby maintaining charging convenience while preventing fuse tripping.
Solution Approach 2:
The detection apparatus continuously monitors the electrical current and provides feedback to the limiting unit. When the current approaches or exceeds the maximum safe value, the feedback mechanism triggers the limiting unit to reduce the current, creating a closed-loop control system that prevents overloading while maintaining optimal charging performance.
2Productivity
If the maximum charging current is increased, then charging speed is improved, but the likelihood of overloading the household socket increases
Solution Approach 1:
The system dynamically adjusts the charging current based on real-time monitoring by the detection apparatus. The limiting unit continuously adapts the maximum current value according to the actual load conditions and historical data, allowing the system to operate at the highest safe charging speed without causing overloading.
Solution Approach 2:
The system changes the electrical current parameter dynamically based on monitoring results. By adjusting the maximum current value according to detected patterns and conditions, the system optimizes charging speed while preventing overloading, effectively managing the trade-off between productivity and safety.
3Reliability
If the integrated controller limits the maximum current to prevent fuse tripping, then reliability is improved, but charging time increases
Solution Approach 1:
The detection apparatus provides continuous feedback on current usage patterns and system conditions. This feedback enables the limiting unit to optimize the maximum current value dynamically, allowing higher currents when conditions permit and lower currents when necessary, thereby minimizing charging time while maintaining fuse protection.
Solution Approach 2:
The system performs preliminary analysis of current patterns and detects safe operating limits before actual charging begins. By pre-determining the maximum safe current based on historical data and real-time monitoring, the system can charge at optimal speeds without risking fuse tripping, thus reducing overall charging time while maintaining reliability.
Data Source
AI summary
A supply cable for electrically connecting an energy store of a vehicle to an energy supply device providing electrical energy. The supply cable includes a connecting line; a primary connector, which electrically coupled/couplable to the connecting line and has a vehicle connection for detachably electrically connecting to the energy store; a secondary connector, which is electrically coupled/couplable to the connecting line and is provided for detachably electrically connecting to the energy supply device. The supply cable has a detection apparatus configured to monitor the electrical current supplied by the energy supply device and detect an interruption of the supplied electrical current, and a limiting unit designed to limit an electrical current flowing through the supply cable to a maximum value. The detection apparatus is designed to transfer a limit value based on a current supplied prior to the detection of the interruption.