EV Charging Control Device Grid Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing methods for electric vehicle charging, such as bidirectional and unidirectional charging, face challenges in efficiently providing operating reserve to the power grid while ensuring vehicle mobility and compatibility with different grid operators, leading to issues like reduced range, power quality concerns, and complex data standardization.
Innovation Solution
A method that uses a conductive charging system with a communication interface to create a charging plan based on anticipated parking duration and desired energy amount, employing predefined charging strategies to manage charging power and ensure maximum operating reserve without disrupting vehicle use, utilizing existing charging station standards and minimizing power peaks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bidirectional charging method is used to provide operating reserve, then the power grid stability is improved, but the vehicle owner's interest and vehicle mobility are worsened due to unauthorized use and reduced range
Solution Approach 1:
A charging control device is introduced as an intermediary between the power grid operator and the vehicle's energy storage device. This mediator manages the charging and discharging processes, ensuring that operating reserve provision does not compromise vehicle mobility or owner interests. The control device coordinates grid requirements with vehicle needs, preventing unauthorized use while maintaining grid stability.
2Ease of operation
If unidirectional charging method with temporal shift is used, then the vehicle mobility is preserved, but the operating reserve potential is not ideally employed and charging facilities may be unavailable at destination
Solution Approach 1:
The charging control device dynamically adjusts charging power based on real-time conditions, including grid requirements, vehicle state, and predicted parking duration. This dynamic approach allows the system to maximize operating reserve provision when facilities are available while ensuring sufficient charging is completed before vehicle departure, adapting to changing conditions rather than following fixed temporal shifts.
Solution Approach 2:
The system performs preliminary calculations of required charging power and duration based on predicted parking duration and vehicle energy needs. By planning ahead and determining optimal charging parameters before execution, the system ensures that charging is completed in time for vehicle departure while maximizing operating reserve provision during the charging period.
3Loss of information
If data is sent directly from vehicle communication unit to grid operator, then the data transmission is established, but extensive standardization is required for compatibility with different grid operators and vehicle manufacturers
Solution Approach 1:
The charging control device serves as an intermediary communication layer between vehicles and grid operators. It standardizes data exchange protocols and formats, translating between different vehicle manufacturers' communication interfaces and grid operator requirements. This mediator approach eliminates the need for extensive point-to-point standardization while ensuring reliable data transmission for charging management.
4Ease of manufacture
If conventional unidirectional charging method is used, then the charging process can be implemented, but interruption and resumption issues arise and the desired energy amount may not be charged
Solution Approach 1:
The charging control device continuously monitors charging progress, vehicle energy needs, and predicted parking duration in real-time. Based on this feedback, it dynamically adjusts charging power to ensure the desired energy amount is achieved before vehicle departure. If charging is interrupted, the system resumes with adjusted parameters to guarantee completion, preventing the reliability issues of conventional methods.
Data Source
AI summary
The invention relates to a method for managing the energy demand of a charging station for an electric vehicle having an energy storage device, a charging power being supplied and controlled conductively via a charging connection line with the aim of providing a largest possible (current) control potential in order to attain grid stability for the power supply system. An anticipated parking duration and a desired energy amount are recorded as power-specific vehicle data and customer-specific data. Based on the aforementioned data, a charging plan is established which can follow different charging strategies according to the invention which dictate the temporal progress of the charging power while parking.