EV Charger Circuit Manager With Dynamic Load Threshold Control
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Solution Overview
Problem
Electric vehicle chargers impose high energy demands on circuits not originally designed for such purposes, leading to inefficiencies and potential overload issues.
Innovation Solution
An electrical device and method that selectively powers an electric vehicle charger by receiving power readings through a junction box, determining if the current power is below a dynamic threshold, and providing an activation signal to enable power delivery through a two-pole breaker, using a control module and network interface to compute and manage power capacity, time, and authorization from a central server.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If electric vehicle chargers are connected to circuits not designed for such purposes, then electric vehicle charging capability is enabled, but circuit overload and inefficiency occur
Solution Approach 1:
The patent introduces a circuit manager as an intermediary device between the circuit breaker and the EV charger. This manager monitors power consumption, enforces demand response signals, and dynamically controls power delivery to the charger, preventing circuit overload while enabling charger operation on standard circuits
Solution Approach 2:
The system dynamically adjusts the power delivery threshold based on real-time power consumption, demand response signals, and circuit capacity. The circuit manager continuously monitors and modifies the activation threshold, transforming a static circuit protection system into a dynamic adaptive system that balances charger operation with circuit safety
2Reliability
If dynamic threshold control is implemented, then power delivery safety is improved, but device complexity increases
Solution Approach 1:
The circuit manager performs multiple functions within a single device: it monitors power consumption, compares against dynamic thresholds, enforces demand response signals, and controls power delivery to the EV charger. By consolidating these functions into one multi-functional device, the patent reduces overall system complexity while maintaining safety
Solution Approach 2:
The circuit manager autonomously monitors power consumption, determines whether to activate the charger based on pre-computed thresholds, and adjusts power delivery without requiring constant external intervention. The system self-regulates based on real-time conditions, reducing the need for complex external control infrastructure
Data Source
AI summary
A device, system and method for selectively activating an electrical device. A delivered power reading through hot wires of a junction box is received. When a current power reading is below a dynamic threshold value compared to a total power capacity rating value of the junction box, an activation signal is provided enabling power delivery from the hot wires to a two-pole breaker connected thereto, the two-pole breaker connecting the electrical device.