Vehicle Charging/Discharging Control for Facility Intervention Detection
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Solution Overview
Problem
The existing power supply and demand systems for vehicles fail to accurately detect the presence or absence of a facility-side control unit, leading to inappropriate charge/discharge control when the facility-side control unit is intervening, due to the lack of distinct signals indicating its presence.
Innovation Solution
A vehicle-side controller determines the presence or absence of a facility-side control device intervention by analyzing power transfer information between the facility-side and vehicle-side charging/discharging devices, using voltage or current conditions to assess if the facility-side control device is intervening in the charge/discharge control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the detection unit is designed to detect the presence of a facility-side control unit based on distinct signals, then the detection accuracy is improved, but the system complexity increases and compatibility with existing facilities without distinct signals is reduced
Solution Approach 1:
The patent introduces an intermediary detection mechanism that observes the operational behavior of the facility-side control unit indirectly through power transfer patterns, voltage fluctuations, and control signals during charge/discharge operations. This intermediary approach allows accurate detection without requiring direct communication or distinct identification signals, thereby maintaining compatibility with existing facilities while achieving reliable detection.
Solution Approach 2:
The system implements feedback by continuously monitoring power transfer information, voltage conditions, and control signal patterns during charge/discharge operations. The detection unit analyzes these feedback signals to determine whether a facility-side control unit is present and actively controlling power flow, enabling accurate detection through operational behavior rather than explicit identification signals.
2Ease of operation
If the vehicle-side control unit assumes no facility-side control unit is present and executes charge/discharge control independently, then the ease of operation is improved, but the reliability deteriorates when a facility-side control unit is actually intervening
Solution Approach 1:
The patent applies preliminary action by having the detection unit operate continuously before and during charge/discharge control to identify the presence of a facility-side control unit. This preliminary detection enables the vehicle-side control unit to adjust its control strategy in advance, switching between independent control mode and coordinated control mode based on the detected facility-side control status, thereby ensuring reliability without compromising operational simplicity.
Solution Approach 2:
The system dynamically adapts its control mode based on the detected presence of a facility-side control unit. When no facility-side control unit is detected, the vehicle-side control unit operates independently with full autonomy. When a facility-side control unit is detected, the system dynamically transitions to a coordinated control mode where the vehicle-side control unit adjusts its commands based on the facility-side control status, ensuring reliable operation under varying conditions.
3Measurement precision
If distinct signals are transmitted from the facility side to indicate the presence of a facility-side control unit, then the measurement precision is improved, but the adaptability deteriorates because not all facility configurations support distinct signal transmission
Solution Approach 1:
The patent uses intermediary detection methods that observe operational characteristics such as power transfer patterns, voltage fluctuations, and control signal timing during charge/discharge operations. This intermediary approach enables the detection unit to infer the presence of a facility-side control unit without requiring distinct identification signals, thereby achieving accurate detection across diverse facility configurations including those without explicit signal transmission capabilities.
Solution Approach 2:
The detection unit is designed with universal detection capabilities that can identify facility-side control units through multiple indirect indicators including power transfer behavior, voltage characteristics, and control signal patterns. This multi-functional detection approach ensures compatibility with various facility types and configurations, whether or not they transmit distinct presence signals, making the system universally applicable across different facility environments.
Data Source
AI summary
A vehicle includes: a storage battery; a vehicle-side charging/discharging device connected to a facility-side charging/discharging device composing a power system provided in a facility, the vehicle-side charging/discharging device being configured to transfer power to/from the facility-side charging/discharging device; and a vehicle-side controller configured to control the vehicle-side charging/discharging device, wherein the facility-side charging/discharging device and the vehicle-side charging/discharging device are coupled to execute charge/discharge control between the power system and the storage battery, the vehicle-side controller is configured to determine, based on information about power transferred between the facility-side charging/discharging device and the vehicle-side charging/discharging device, presence or absence of an intervention of a facility-side control device, which controls power in the power system, in the charge/discharge control, and the charge/discharge control is executed based on the presence or the absence of the intervention.