Power Swap Station Grid Switching for Outage-Resilient Battery Service
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power swap stations face challenges in maintaining normal operations due to sudden power failures and grid power shortages, which can disrupt charging and discharging services, and there is a need for a system that can manage power supply and demand effectively.
Innovation Solution
A control device and charging and discharging apparatus for power swap stations that can switch between on-grid and off-grid operations, using a receiving module and control module to send control signals for charging, discharging, and reverse power supply, and includes an uninterruptible power supply (UPS) for continuous operation, and a power conversion device to convert between AC and DC power as needed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power swap station relies on grid power supply, then normal charging operations can be maintained, but sudden power failures or power rationing can disrupt operations and cause service interruption
Solution Approach 1:
The power swap station performs preliminary charging of battery packs during periods when grid power is available and stable. The control device monitors grid power status and proactively charges battery packs before power failures occur, ensuring that sufficient charged battery packs are available to serve vehicles even when grid power is interrupted.
Solution Approach 2:
The invention introduces an intermediary power swap mechanism where charged battery packs act as a buffer between the grid and vehicle users. When grid power fails, the station can quickly swap charged battery packs with discharged ones, maintaining service continuity without directly relying on unstable grid power during the failure period.
2Productivity
If the power swap station charges battery packs during peak grid demand, then battery packs can be kept charged for service, but it exacerbates power supply contradictions and may lead to power rationing
Solution Approach 1:
The control device implements periodic charging cycles for battery packs, alternating between charging during low-demand periods and swapping during high-demand periods. This periodic operation pattern allows the station to accumulate charged battery packs gradually without concentrating all charging demand at peak times, thus avoiding exacerbating grid power supply contradictions.
Solution Approach 2:
The system dynamically adjusts its operation mode based on real-time grid power status and vehicle demand. When grid power is abundant, the station charges battery packs; when grid power is constrained, the station switches to swapping mode using previously charged battery packs. This dynamic adaptation allows the station to maintain productivity while responding flexibly to power supply conditions.
3Reliability
If the power swap station implements both on-grid and off-grid operations, then service continuity can be maintained during power failures, but the system complexity increases
Solution Approach 1:
The power swap station is designed with multi-functionality to perform both on-grid charging operations and off-grid swapping operations using the same core hardware infrastructure. The control device universally manages both operation modes, selecting the appropriate mode based on grid power status, thus achieving service continuity without requiring completely separate systems for each function.
Solution Approach 2:
The control device continuously monitors grid power status and automatically adjusts operation mode based on feedback signals. When grid power is stable, the system operates in charging mode; when power failures or rationing are detected, the system switches to swapping mode. This feedback-based automatic control simplifies the operational complexity by providing clear decision logic rather than requiring complex manual or semi-automatic control systems.
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
Ensures continuous power supply for charging and discharging operations, allows completion of power swap requirements even during grid power outages, and enables reverse power supply to the grid during shortages, thereby stabilizing power supply and demand.
Implementation Method 1
a power conversion device, configured to: convert alternating current power from the grid to direct current power in response to receiving of the first control signal, to charge the at least one battery pack
Implementation Method 2
convert direct current power from the at least one battery pack to alternating current power in response to receiving of the second control signal, to supply power to the power swap operation of the power swap station
Data Source
AI summary
The disclosure relates to a control device, a control method, and a charging and discharging apparatus for a power swap station, a power swap station, and a computer-readable storage medium. The control device includes: a receiving module, configured to receive first information and second information for indication, where the first information indicates a status of a power swap station, and the second information indicates a working requirement on the power swap station; and a control module, configured to: send a first control signal in response to that the first information indicates that the power swap station is in an on-grid state and the second information indicates a charging requirement on at least one battery pack in the power swap station, where the first control signal instructs to perform an on-grid charging operation on the power swap station, to charge the at least one battery pack, and send a second control signal in response to that the first information indicates that the power swap station is in an off-grid state and the second information indicates a power swap requirement on the power swap station, where the second control signal instructs to perform off-grid discharging operation on the power swap station, so that the power swap station can complete the power swap requirement.