Route-Based Battery Preconditioning for Faster EV Charging
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Solution Overview
Problem
Conventional electric vehicle battery preconditioning systems rely on fixed time intervals for modifying battery temperature, leading to suboptimal recharging efficiency and increased vehicle downtime, especially in fleets where delays can be substantial.
Innovation Solution
The system determines a route-based preconditioning start time by analyzing the vehicle's route characteristics, such as elevation, speed, and traffic conditions, to project the battery temperature and adjust the preconditioning intensity accordingly, optimizing the battery temperature to match a target range at the charging station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If fixed time interval preconditioning is used, then system complexity is reduced, but recharging efficiency deteriorates and vehicle downtime increases
Solution Approach 1:
The patent applies dynamics by transitioning from fixed time interval preconditioning to dynamic route-based preconditioning. The system continuously monitors route characteristics (elevation, speed, traffic conditions) and adjusts the preconditioning start time accordingly, making the system adaptive to varying driving conditions while optimizing recharging efficiency
Solution Approach 2:
The patent changes the control parameter from fixed time intervals to variable parameters based on route characteristics. By analyzing elevation changes, speed profiles, and traffic conditions, the system determines optimal preconditioning timing that adapts to different routing scenarios, thereby improving recharging efficiency without excessive complexity
2Ease of operation
If fixed time interval preconditioning is used, then ease of operation is improved, but vehicle downtime increases
Solution Approach 1:
The patent applies preliminary action by determining the optimal preconditioning start time in advance based on analyzed route characteristics. The system calculates when preconditioning should begin to ensure the battery reaches optimal temperature upon arrival at the charging station, minimizing waiting time while maintaining operational simplicity through automated calculations
3Productivity
If route-based preconditioning analysis is implemented, then recharging efficiency is improved, but device complexity increases
Solution Approach 1:
The patent applies universality by using a multi-functional approach where the route analysis system serves multiple purposes: determining preconditioning timing, optimizing battery temperature, and minimizing downtime. By consolidating these functions into a unified route-based system, the patent improves recharging efficiency while managing complexity through integrated design
4Use of energy by moving object
If optimal preconditioning timing is achieved through route analysis, then energy consumption is reduced, but measurement precision requirements increase
Solution Approach 1:
The patent applies feedback by continuously monitoring route characteristics (elevation, speed, traffic conditions) and using this information to adjust preconditioning timing. The system incorporates feedback from GPS data, vehicle sensors, and route analysis to optimize the preconditioning start time, reducing energy consumption while managing measurement precision through integrated sensing and calculation
Data Source
AI summary
A method of preconditioning a battery of a vehicle includes determining a baseline preconditioning start time relative to an estimated time of arrival at a charging station. The method further includes analyzing a route of the vehicle to the charging station to determine a route characteristic. The method further includes modifying the baseline preconditioning start time based on the route characteristic to determine a route-based preconditioning start time.