Household Energy Gateway Coupling for Multi-Source Phase Synchronization

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Solution Overview

Problem

Existing household energy storage systems are limited by the inability to integrate multiple power sources due to phase desynchronization and incompatibility between direct current and alternating current sources, restricting their use scenarios and efficiency.

Innovation Solution

A multi-source coupling system comprising an energy gateway, energy storage system, and power conversion system, equipped with phase-locking functions, to manage and convert various power sources, including DC-AC and AC-AC conversion modules, enabling seamless integration and storage of electrical energy from diverse sources.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple power sources are integrated into the household energy storage system, then the versatility and energy storage effect are improved, but phase desynchronization occurs causing device malfunction or damage

Engineering Contradiction:

Improvepower source integration capabilityVSAvoiddevice operation safety

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The patent introduces a multi-source coupling device as an intermediary component between different power sources and the energy storage system. This device includes a coupling controller that detects phase information from AC power sources and generates phase-locking control signals to synchronize multiple AC power sources before they are coupled to the energy storage system, thereby preventing phase desynchronization damage while enabling multi-source integration

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If direct current power source is connected in parallel with alternating current power source, then the power source compatibility is improved, but phase desynchronization prevents proper operation

Engineering Contradiction:

Improvepower source compatibilityVSAvoidpower source operation

Core Design Contradiction:

Adaptability or versatilityVSEase of operation

Solution Approach 1:

The multi-source coupling device serves as a mediator that handles the compatibility issues between DC and AC power sources. The coupling controller detects power source types and implements appropriate coupling strategies, using phase-locking for AC sources and direct coupling for DC sources, thereby enabling compatible operation of different power source types

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system dynamically changes coupling parameters based on power source type detection. For AC power sources, the system adjusts phase angle parameters through phase-locking control, while for DC power sources, it uses direct coupling without phase adjustment, thereby adapting the coupling mode to match the specific parameters of each power source

Inventive Principle:

Principle #35Parameter changes

3Device complexity

If only photovoltaic power source and grid are coupled, then the system complexity is reduced, but the use scenarios are limited

Engineering Contradiction:

Improvesystem structure simplicityVSAvoiduse scenario range

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The multi-source coupling device is designed with universal functionality to handle multiple types of power sources including AC power sources, DC power sources, and energy storage systems through a single unified interface. The coupling controller can detect and adapt to different power source types, enabling the system to support various use scenarios without requiring separate dedicated coupling circuits for each power source type

Inventive Principle:

Principle #6Universality (Multi-functionality)

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

Enhances the flexibility and efficiency of household energy storage by allowing multiple power sources to work together, expanding use scenarios and ensuring proper operation without damage, thereby improving the overall effectiveness of the energy storage system.

Implementation Method 1

The power conversion system is coupled to the energy gateway and configured to convert the different power sources into current sources or voltage sources

Methodology Applied

Scientific EffectPower conversion:

Implementation Method 2

The multiple power conversion modules have a phase-locking function

Methodology Applied

Scientific EffectPhase-locking:

Implementation Method 3

The energy storage system is coupled to the energy gateway and configured to store electrical energy

Methodology Applied

Scientific EffectElectrical energy storage: Electrical Accumulator

Data Source

PatentUS12512676B2Multi-source coupling system for household energy storage

Publication Date: 2025.12.30 FRANKLINWH ENERGY STORAGE INC

AI summary

A multi-source coupling system for household energy storage includes an energy gateway configured to control coupling and decoupling of different power sources; an energy storage system coupled to the energy gateway and configured to store electrical energy; and a power conversion system coupled to the energy gateway and configured to convert the different power sources into current sources or voltage sources.