AC EV Charging Duty Cycle Identification for Grid-Stable Load Control
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Solution Overview
Problem
The increasing number of electric vehicles on the market poses challenges for grid stability and efficient charging, as various models require different charging powers and configurations, and existing systems lack the ability to identify specific vehicles and charging equipment during charging.
Innovation Solution
A computer-implemented method and system that use a duty cycle pattern with an encrypted data packet to identify electric vehicles and charging equipment through alternating current electric charging, by comparing the pre-stored identification data with the data included in the duty cycle pattern.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If various models of electric vehicles are manufactured by various manufacturers with different charging configurations, then the versatility and adaptability of the charging system increases, but the ability to identify and properly charge each vehicle type decreases
Solution Approach 1:
The system performs preliminary identification of the electric vehicle's make, model, and charging configuration requirements before initiating the charging process. The EVSE queries the vehicle's onboard communication system to obtain identification data, then uses this information to pre-configure the charging parameters and duty cycle pattern, ensuring the vehicle is properly identified and configured before power transfer begins.
Solution Approach 2:
The patent introduces an intermediary identification system that mediates between the diverse vehicle models and the charging infrastructure. This system uses encrypted data packets containing vehicle identification information that are transmitted through the communication interface, allowing the EVSE to accurately identify and adapt to different vehicle types without requiring direct hardwired configurations for each model.
2Productivity
If the EVSE supplies power without identifying the electric vehicle type, then the charging process can start immediately, but the charging efficiency and grid stability deteriorate
Solution Approach 1:
The system performs preliminary identification of the electric vehicle's make, model, and charging configuration requirements before initiating the charging process. The EVSE queries the vehicle's onboard communication system to obtain identification data, then uses this information to pre-configure the charging parameters and duty cycle pattern, ensuring the vehicle is properly identified before power transfer begins.
Solution Approach 2:
The system implements a feedback mechanism where the EVSE continuously monitors charging parameters and vehicle responses, adjusting the duty cycle pattern in real-time based on the identified vehicle type's requirements. This feedback loop ensures that charging remains efficient while maintaining grid stability through adaptive power management.
3Measurement precision
If encrypted data packets with vehicle identification are transmitted through the duty cycle pattern, then the identification accuracy improves, but the communication complexity and data transmission time increase
Solution Approach 1:
The patent makes the duty cycle pattern serve multiple functions: it simultaneously controls the power delivery to the vehicle and embeds encrypted identification data within its structure. This multi-functionality allows the same communication mechanism to handle both charging control and vehicle identification, reducing the need for separate dedicated identification hardware or protocols.
Solution Approach 2:
The system encodes identification information by modifying parameters of the duty cycle pattern, such as the timing, duration, or intensity of specific cycles. By embedding data in these parameter variations rather than using separate data channels, the system achieves accurate identification while maintaining relatively simple communication infrastructure.
Data Source
AI summary
A system and method for identifying an electric vehicle through an alternating current electric charging that include receiving a charging command to initiate the alternating current electric charging of the electric vehicle (EV) through electric vehicle supply equipment (EVSE). The system and method also include generating a duty cycle pattern that pertains to the electric charging of the EV that includes at least one encrypted data packet and communicating the duty cycle pattern to at least one of: the EV and the EVSE. The system and method further include comparing an identification of at least one of: the EV and the EVSE included within the at least one encrypted data packet of the duty cycle pattern with a pre-stored identification of: the EV and the EVSE to identify at least one of: the EV and the EVSE.