Smart Power Splitter for 240V Outlet Load Sharing
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Solution Overview
Problem
The high cost and complexity of installing dedicated 240V outlets for Level II electric vehicle charging hinder mainstream adoption, especially for renters and those with limited electrical capacity in their homes, as existing homes often lack spare outlets and electrical panel capacity to support multiple high-voltage devices.
Innovation Solution
A smart power splitter that can intelligently divert and share power between high-voltage devices connected to a 220- or 240-volt outlet, using current sensors and a microprocessor to monitor current draw and implement 'soft breaker' functionality, allowing for simultaneous operation of multiple devices without overloading the electrical circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a dedicated 240V outlet is installed for Level II EV charging, then charging speed and capability are improved, but installation cost and complexity increase significantly
Solution Approach 1:
The power splitter enables a single 240V outlet to serve multiple functions: it can provide Level II EV charging while simultaneously supporting other high-voltage appliances such as dryers, water heaters, or air conditioners. The device dynamically allocates power between multiple outlets based on connected devices and current demand, making the existing outlet universal for various high-power applications without requiring dedicated installation for each device.
Solution Approach 2:
The power splitter divides the single 240V input power into multiple separate 240V output circuits, each capable of independently powering high-voltage devices. By segmenting the power distribution, the system allows simultaneous operation of multiple appliances from one outlet while maintaining proper electrical isolation and protection for each circuit branch.
2Power
If multiple high-voltage devices are connected to existing outlets, then power availability is improved, but electrical panel capacity is exceeded causing breaker trips
Solution Approach 1:
The power splitter incorporates real-time monitoring of current draw from each connected device and the total load on the electrical panel. Based on this feedback, the system dynamically adjusts power distribution to prevent exceeding panel capacity. When approaching breaker trip thresholds, the splitter automatically reduces or redistributes power to maintain system stability and prevent interruptions.
Solution Approach 2:
The power distribution system transitions from static, fixed circuit assignments to dynamic, adaptive power allocation. The splitter continuously monitors electrical conditions and adjusts the power delivered to each outlet in real-time based on current demand, connected device requirements, and available panel capacity, enabling flexible and reliable multi-device operation.
3Adaptability or versatility
If a smart power splitter is used to share power between multiple devices, then adaptability and power sharing capability are improved, but device complexity and cost increase
Solution Approach 1:
The power splitter acts as an intermediary device between the electrical panel and multiple high-voltage appliances. It provides intelligent mediation by monitoring power demands, allocating available capacity appropriately, and protecting connected devices from overload conditions. This intermediary function enables safe power sharing without requiring complex modifications to the electrical panel or the connected appliances themselves.
Data Source
AI summary
Systems and methods for managing power distribution from in-home electrical wiring are disclosed. In one embodiment, a power splitter device includes a an electrical input source connection with a first input line and a second input line for two hot phases of alternating current electricity, a primary electrical output and a secondary electrical output, the primary electrical output having a first primary output line and a second primary output line and the secondary electrical output having a first secondary output line and a second secondary output line, a first, second, third, and fourth current sensor, a first relay and a second relay, and a control logic microprocessor configured to receive measurements of current, determine an overcurrent condition based upon measurements of current over a period of time and disconnect power from the secondary electrical output connection based upon a determined overcurrent condition.