Vehicle Charging Communication Control for Missing Charger Signals
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Solution Overview
Problem
Existing vehicle charging systems face challenges in quick charging due to non-compliance with communication sequences by some chargers, leading to interrupted charging processes and reduced user convenience.
Innovation Solution
A control device for vehicles that includes an input and output circuit and a control circuit, capable of transmitting predefined signals to establish and maintain communication sequences even when the charger does not comply with the standard timing, ensuring successful charging by adapting to missing or out-of-order signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the vehicle strictly follows the predefined communication sequence to ensure compliance with charging standards, then charging reliability is improved, but charging compatibility with non-compliant chargers deteriorates
Solution Approach 1:
The control device dynamically adjusts the communication sequence based on charger responses. When a first signal is not received at the expected timing, the control device transitions from waiting mode to active transmission mode, sending a second signal to probe charger status. This dynamic adaptation allows the system to maintain reliability with compliant chargers while gaining compatibility with non-compliant ones.
Solution Approach 2:
The invention changes the communication parameter (signal transmission timing) based on received signals. The control device monitors the timing of received signals and adjusts its transmission timing accordingly, deviating from the strict predefined sequence when necessary to accommodate chargers that do not follow the standard timing protocol.
2Manufacturing precision
If the vehicle waits for the first signal at the predetermined timing as defined in the communication sequence, then communication protocol compliance is improved, but charging initiation speed deteriorates
Solution Approach 1:
The control device prepares multiple signal sequences in advance, including alternative sequences for handling missing or delayed first signals. This preliminary preparation allows the device to quickly switch to alternative communication patterns without significant delay, reducing the time loss while maintaining protocol compliance where possible.
Solution Approach 2:
When the first signal is not received at the predetermined timing, the control device skips the waiting step and directly transmits the second signal to initiate communication. This rushing through of the communication process reduces charging initiation time while still achieving the necessary communication objectives.
3Adaptability or versatility
If the vehicle transmits the second signal immediately when the first signal is missing, then charging compatibility with non-compliant chargers is improved, but communication sequence stability deteriorates
Solution Approach 1:
The control device implements feedback mechanisms to monitor charger responses to the second signal. Based on whether the charger responds appropriately, the control device determines whether to continue with the alternative communication sequence or revert to the standard sequence, thereby maintaining stability while achieving compatibility.
Solution Approach 2:
The control device prepares compensatory communication sequences in advance to cushion against potential disruptions from non-compliant chargers. These pre-prepared alternative sequences provide a stable fallback path that maintains communication stability even when the standard sequence is disrupted by missing or out-of-order signals.
Data Source
AI summary
In a control device for a vehicle, the vehicle is configured to charge an electric power storage device with an electric power supplied from a charger. The control device includes an input and output circuit and a control circuit. The input and output circuit is configured to input predetermined signal and output the predetermined signal. The control circuit is configured to prepare for charging of the electric power storage device by controlling transmission and reception of signals through the input and output circuit according to a predefined communication sequence. The control circuit is configured to proceed with the predefined communication sequence by transmitting the second signal to the charger even when the vehicle does not receive the first signal at the predetermined timing.