Eco-Friendly Vehicle Battery Charging Time Prediction Method
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The challenge in predicting the charging time for eco-friendly vehicle batteries is due to the variability of temperature and voltage, which affects the charging current, making it difficult to estimate an accurate expected charging time, especially when the initial and target charging amounts differ.
Innovation Solution
A method that measures battery temperature and voltage using sensors, compares these values with pre-stored data to identify the charging step, calculates the charging current and cutoff voltage, and determines the expected charging time by comparing the time required for voltage to reach the cutoff voltage and the time needed to raise the temperature, updating the charging process accordingly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the battery capacity and energy density are increased to extend traveling distance, then the traveling distance is improved, but the charging time increases
Solution Approach 1:
The charging process is divided into multiple charging steps with different charging currents. The controller identifies the current charging step by comparing measured temperature and voltage with pre-stored data, then applies appropriate charging current for each step, enabling efficient charging of large-capacity batteries without excessive charging time
Solution Approach 2:
The charging current is dynamically adjusted based on the battery's temperature and voltage conditions. The controller continuously monitors these parameters and modifies the charging current accordingly, allowing the system to optimize charging speed while accommodating the battery's changing state during charging
2Productivity
If the charging current is increased to reduce charging time, then the charging speed is improved, but the temperature and voltage of the battery vary unpredictably, making accurate charging time estimation difficult
Solution Approach 1:
The controller continuously monitors the battery's temperature and voltage during charging and uses this feedback to identify the current charging step. By comparing real-time measurements with pre-stored data from multiple charging steps, the system accurately determines the battery's state and adjusts charging current accordingly, maintaining both high charging speed and accurate time estimation
Solution Approach 2:
The system changes charging current parameters based on identified charging steps. Different charging steps correspond to different current levels, and the controller transitions between these parameters as the battery charges, optimizing both speed and predictability of charging time
Data Source
AI summary
A method of predicting time for charging a battery of an eco-friendly vehicle can include: measuring a temperature and a voltage of the battery using one or more sensors; comparing the measured temperature and voltage with pre-stored data values; identifying a charging step among a plurality of charging steps; calculating a charging current value and a cutoff voltage value according to the identified charging step; and calculating an expected charging time by adding a second time to the expected charging time when a first time is greater than the second time or by adding the first time to the expected charging time when the second time is greater than the first time.