Bidirectional Charger Control for Multi-Region Grid Interconnection
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Solution Overview
Problem
Existing charging devices struggle to perform system interconnection appropriately when connected to charging facilities with different technical requirements, such as varying voltage and frequency detection thresholds, across different regions.
Innovation Solution
The charging device includes a communication circuit to receive interconnection information from a charging facility, a battery for power accumulation, a bidirectional charger for AC-DC power conversion, and a control circuit that acquires parameters from the interconnection information to control the discharging operation, ensuring compliance with regional technical requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the charging device uses fixed discharging parameters, then the device structure is simple, but it cannot comply with different regional technical requirements
Solution Approach 1:
The patent implements dynamic parameters by allowing the discharging parameters (voltage, frequency, power) to be adjusted in real-time based on the detected regional grid requirements. The control circuit receives interconnection information from the charging facility and dynamically modifies the discharging characteristics to match local technical standards, transforming a static system into an adaptive one.
Solution Approach 2:
The patent changes the operational parameters of the charging device by receiving interconnection information that specifies regional technical requirements (voltage thresholds, frequency ranges, power limits) and adjusting the discharging parameters accordingly. This allows the same device to comply with different regional standards without hardware modifications.
2Reliability
If the charging device acquires and adjusts discharging parameters based on interconnection information, then it can perform system interconnection appropriately, but the control complexity increases
Solution Approach 1:
The patent applies preliminary action by acquiring interconnection information and determining appropriate discharging parameters before the actual discharging operation begins. The control circuit receives the interconnection information from the charging facility, processes the technical requirements, and pre-configures the discharging parameters to ensure compliant operation from the start of power transfer.
Solution Approach 2:
The patent implements feedback by using the interconnection information received from the charging facility to continuously adjust the discharging parameters. The control circuit monitors the grid conditions and modifies the discharging characteristics based on the technical requirements communicated through the interconnection information, ensuring ongoing compliance with regional standards.
3Adaptability or versatility
If the charging device supports multiple regional standards, then it can operate across different regions, but the device structure becomes more complex
Solution Approach 1:
The patent achieves multi-functionality by designing a control circuit that can handle multiple regional standards through a single unified interface. The bidirectional charger and control system are capable of operating with different voltage, frequency, and power parameters by receiving appropriate interconnection information, eliminating the need for multiple dedicated systems for different regions.
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
This solution enables the charging device to perform system interconnection seamlessly across different regions by dynamically adjusting its discharging parameters to match the technical requirements of each region, ensuring safe and efficient energy transfer.
Implementation Method 1
The bidirectional charger is configured to perform bidirectional conversion between AC power and DC power
Data Source
AI summary
A charging device includes a communication circuit, a battery, a terminal, a bidirectional charger, and a control circuit. The communication circuit receives interconnection information related to a technical requirement for interconnection with a system. The interconnection information is received from a charging facility that is connected to the system. The terminal allows the charging device to be connected to the charging facility. The bidirectional charger is connected between the terminal and the battery. The bidirectional charger performs bidirectional conversion between AC power and DC power. The control circuit acquires one or more parameters in accordance with the interconnection information received by the communication circuit. The control circuit controls, by using the acquired parameters, a discharging operation to the terminal performed by the bidirectional charger.