Electricity-Storage System Reverse Power Flow Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electricity-storage systems lack user convenience and safety, particularly in preventing reverse power flow during power stoppages and resumption, which can lead to instability and inefficiency in energy distribution.
Innovation Solution
An electricity-storage system comprising a secondary battery, a connector for connection to a power line network, a communicator for external device communication, and a controller that manages discharge based on instructions from an external device to prevent reverse power flow and ensure safe operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the electricity-storage system allows free discharge without external control, then the convenience for users is reduced and safety is compromised, but the system becomes more autonomous and responsive to local needs
Solution Approach 1:
The patent introduces an external device as an intermediary between the electricity-storage system and the power line network. This external device communicates discharge instructions to the electricity-storage system, mediating the discharge control to ensure safety while maintaining user convenience. The intermediary manages the discharge enablement instructions and prevents reverse power flow without requiring complex local control circuits in the electricity-storage system itself.
2Reliability
If the electricity-storage system autonomously monitors and controls discharge to prevent reverse power flow, then safety is improved, but the device complexity increases
Solution Approach 1:
The patent extracts the complex monitoring and control functions from the electricity-storage system and places them in an external device. The electricity-storage system itself remains relatively simple with basic components (secondary battery, connector, communicator), while the external device handles the sophisticated tasks of detecting reverse power flow conditions and issuing discharge enablement instructions. This extraction reduces the complexity burden on the electricity-storage system while maintaining safety.
3Reliability
If the electricity-storage system uses communication with external devices for discharge control, then the safety and stability are improved, but the response time during power stoppages may be delayed
Solution Approach 1:
The patent implements preliminary action by having the external device continuously monitor the power line network conditions and be ready to issue discharge enablement instructions immediately when power stoppages occur or resume. The communication system maintains readiness states so that when discharge is needed, the external device can quickly transmit instructions without delay. This preliminary preparation of communication channels and monitoring states ensures rapid response while maintaining stable control.
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
The system reduces the likelihood of reverse power flow, enhancing safety and user convenience by allowing controlled discharge according to external instructions, thereby stabilizing energy distribution during power stoppages and resumption.
Implementation Method 1
a secondary battery
Data Source
AI summary
An electricity-storage system 110a is configured to be able to charge and discharge by connecting a plug to an electrical outlet 140a. Power discharged from the electricity-storage system 110a is monitored by a reverse-power monitoring device 100 and discharge from the electricity-storage system 110a is executed according to instruction from the reverse-power monitoring device 100, in order to avoid reverse power flow to an electrical grid 150.