Power Swap Station Control for Grid-Outage Battery Dispatch
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Power swap stations face disruptions due to grid power shortages, leading to sudden power failures and inability to provide services, and existing systems lack efficient mechanisms for managing power supply and demand fluctuations.
Innovation Solution
A control device and charging/discharging apparatus for power swap stations that dynamically manage power operations by sending control signals for on-grid charging, off-grid discharging, and reverse power supply to the grid, utilizing an uninterruptible power supply and power conversion devices to ensure continuous operation and health checks on battery packs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If grid power management measures (peak shifting, peak avoidance, power rationing, power cutoff) are implemented, then power supply and demand contradiction is alleviated, but power swap station service continuity deteriorates
Solution Approach 1:
The patent introduces a control device as an intermediary between the grid and power swap station equipment. This control device receives grid power management instructions and translates them into coordinated control signals for multiple battery packs, enabling smooth transition between charging and discharging modes without affecting service continuity. The intermediary absorbs the shock of power management measures and prevents direct impact on station operations.
Solution Approach 2:
The system dynamically adjusts the operational state of battery packs based on real-time grid power availability and station service requirements. When grid power is available, battery packs charge; when power is restricted or during peak periods, battery packs discharge to provide station operations power. This dynamic switching resolves the contradiction by making the power supply system flexible rather than static.
2Loss of energy
If battery packs are used to reversely supply power to grid, then power supply and demand contradiction is alleviated, but power swap station power supply reliability deteriorates
Solution Approach 1:
The system performs preliminary charging of battery packs when grid power is abundant and rates are low, storing energy in advance for future use. This preliminary action ensures that when reverse power supply to the grid is needed, the station has pre-charged battery packs available to immediately switch to discharging mode, maintaining power supply reliability without interruption to station operations.
Solution Approach 2:
The control device changes operational parameters of battery packs based on grid conditions. When grid needs power, battery discharge rate increases; when grid provides power, battery charge rate increases. These parameter changes are smoothly managed by the control device to ensure station power supply remains stable regardless of whether battery packs are charging or discharging.
3Adaptability or versatility
If multiple battery packs are controlled to charge or discharge simultaneously, then power swap station operational flexibility is improved, but control complexity increases
Solution Approach 1:
The patent divides the power management task into segments, with each battery pack controlled independently but coordinately. The control device sends individual control signals to each battery pack based on its state and the overall station requirements. This segmentation allows flexible operational configurations (some packs charging, others discharging) while keeping control logic modular and manageable through standardized signal protocols.
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
Enables the power swap station to maintain normal operations during grid power interruptions, complete power swap requirements, and alleviate grid power shortages by switching between charging, discharging, and reverse power supply modes, ensuring reliable service and efficient energy management.
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
Implementation Method 3
the control device is powered by an uninterruptible power supply UPS
Data Source
Figure 1~2
Figure 3
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.