Outlet Power Sharing for EV Charging Without Circuit Overload
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge of safely sharing a single high-voltage outlet between an electrical appliance and an electric vehicle (EV) charger without overloading the circuit, which can lead to tripping the circuit breaker or safety hazards, is unsolved by existing solutions that require significant electrical modifications.
Innovation Solution
A power sharing device (PSD) that automatically switches electricity flow between an appliance and an EV charger, using an internal circuit breaker and current detection to prevent simultaneous high current draw, ensuring safe and compliant operation without modifying the home electrical system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single high-voltage outlet is shared between an appliance and EV charger using a Y splitter, then both devices can be connected simultaneously, but the circuit breaker will trip or safety hazards occur due to excessive current draw
Solution Approach 1:
The power sharing device dynamically monitors current draw from both the appliance and EV charger in real-time, automatically adjusting power distribution to prevent total current from exceeding circuit capacity. The system transitions between different power allocation states based on detected load conditions, ensuring circuit safety while enabling simultaneous connection of multiple devices.
Solution Approach 2:
The device incorporates continuous feedback mechanisms through current sensors that monitor power consumption from both outlets. When the appliance draws significant current, the system automatically reduces or cuts power to the EV charger outlet, and vice versa. This closed-loop feedback control prevents circuit overload while maintaining adaptability for both devices.
2Adaptability or versatility
If additional high-voltage outlets are installed to accommodate both appliance and EV charger, then simultaneous use is enabled, but significant electrical work and high cost are required
Solution Approach 1:
The power sharing device is a universal solution that interfaces with existing single high-voltage outlets to provide multi-device support. Rather than requiring custom electrical installations for each scenario, this single device can be plugged into any standard 240V outlet and automatically manage power distribution between an appliance and EV charger, eliminating the need for additional electrical work.
Solution Approach 2:
The device acts as an intermediary between the existing electrical system and multiple power-consuming devices. It plugs into the single available outlet and creates additional protected outlets, serving as a mediator that enables simultaneous device operation without requiring modifications to the home's electrical infrastructure.
3Power
If the circuit breaker rating is fully utilized to maximize power availability, then charging speed is improved, but the risk of overheating and fire increases
Solution Approach 1:
The power sharing device preemptively limits the total current draw to stay below circuit breaker tripping thresholds, creating a safety buffer before dangerous conditions occur. By continuously monitoring and controlling power distribution, the system maintains operation within safe thermal margins, preventing wire overheating and potential fire hazards before they can develop.
Data Source
AI summary
A power sharing device allows a single high voltage electric socket to be shared with one or more appliances and an EV charger. The device can be easily installed and used without updating the electric circuit of the dwelling. The device senses the load of the appliance socket(s) and automatically disconnects the EV charger socket if significant current is being drawn by the appliance(s). The device may also include a circuit breaker to prevent current overload of the electric circuit. These and other features of the device provide improved safety relative to existing solutions.