Vehicle Charging Voltage Limit Adaptation
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Solution Overview
Problem
Conventional charging systems cannot initiate charging when the maximum voltage of a vehicle's power storage exceeds the maximum output voltage of the charging facility, preventing the vehicle's power storage from being fully charged.
Innovation Solution
The vehicle communicates a charging voltage upper limit value to the charging facility, which is equal to or smaller than the facility's outputtable voltage, allowing charging to commence even when the vehicle's maximum voltage is higher than the facility's output voltage, ensuring that the power storage can be charged to some extent.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the charging facility uses a fixed maximum output voltage, then the charging facility can operate stably, but it cannot charge vehicle power storages with maximum voltages higher than the facility's output voltage
Solution Approach 1:
The charging voltage upper limit value is dynamically adjusted based on the comparison between the power storage's maximum voltage and the charging facility's output voltage. When the power storage's maximum voltage exceeds the facility's output voltage, the upper limit is set to the facility's output voltage; otherwise, it is set to the power storage's maximum voltage. This dynamic adjustment enables compatibility with different power storage types while ensuring reliable charging initiation.
Solution Approach 2:
The charging voltage upper limit parameter is changed based on the voltage compatibility condition. By switching between two possible values (power storage maximum voltage or charging facility output voltage), the system adapts to different operating conditions and ensures charging can start reliably regardless of the power storage's maximum voltage.
2Productivity
If the charging voltage upper limit is set to the power storage maximum voltage, then full charging capacity is achieved, but charging cannot start when this exceeds the facility output voltage
Solution Approach 1:
The charging voltage upper limit parameter is conditionally set based on voltage compatibility. When the power storage maximum voltage exceeds the facility output voltage, the upper limit is changed to the facility's output voltage to enable charging initiation. When they are compatible, the upper limit remains at the power storage maximum voltage to achieve full charging capacity.
Data Source
AI summary
A vehicle is a vehicle in which a mounted power storage is charged with electric power from a charging facility, the vehicle including a communication unit that obtains a first voltage value indicating an outputtable voltage value that can be outputted from the charging facility and a processing unit that transmits to the charging facility, a third voltage value which is equal to or smaller than the first voltage value as a maximum voltage of the power storage when a second voltage value indicating a maximum voltage value of the power storage is larger than the first voltage value.