Route-Based Battery Preconditioning for EV Charging Arrival
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Solution Overview
Problem
Conventional battery preconditioning systems in electric vehicles rely on fixed time intervals, which can lead to suboptimal outcomes such as prolonged delays and inefficient energy consumption, especially when considering the dynamic conditions of the vehicle's route to a charging station.
Innovation Solution
The system determines a route-based preconditioning start time by analyzing route characteristics such as elevation, speed, and acceleration profiles, and adjusts the baseline preconditioning start time accordingly to optimize battery temperature and preconditioning intensity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed time interval is used for battery preconditioning, then the system operation is simple, but the energy consumption increases and charging efficiency decreases
Solution Approach 1:
The patent applies dynamics by transitioning from a static fixed-time preconditioning schedule to a dynamic route-based schedule. The system continuously adjusts the preconditioning start time based on real-time route characteristics (elevation changes, traffic conditions, speed profiles) to optimize energy consumption while maintaining battery temperature within optimal charging ranges.
Solution Approach 2:
The patent changes the time parameter from a fixed constant to a variable determined by route characteristics. By analyzing elevation changes, traffic patterns, and speed profiles, the system calculates an optimized preconditioning start time that adapts to different driving scenarios, thereby reducing energy waste from premature or excessive preconditioning.
2Device complexity
If a fixed time interval is used for battery preconditioning, then the system design is simple, but the vehicle downtime increases
Solution Approach 1:
The patent applies preliminary action by calculating and initiating battery preconditioning at an optimized start time determined before the charging event. By analyzing the upcoming route characteristics in advance, the system schedules preconditioning to complete precisely when the vehicle arrives at the charging station, eliminating unnecessary waiting time while maintaining system design simplicity.
3Use of energy by moving object
If route characteristics are analyzed to determine preconditioning start time, then energy consumption is reduced, but system complexity increases
Solution Approach 1:
The patent applies universality by utilizing the existing route navigation and telemetry systems already present in modern vehicles. The same hardware and software infrastructure used for displayin groute information to drivers is repurposed to calculate optimized preconditioning schedules, thereby reducing energy consumption without significantly increasing overall system complexity.
4Ease of manufacture
If conventional fixed-time preconditioning is used, then implementation is straightforward, but charging efficiency decreases
Solution Approach 1:
The patent implements feedback by continuously monitoring route characteristics (elevation, traffic, speed) and using this information to adjust the preconditioning schedule. The system receives feedback from the navigation system about upcoming route conditions and modifies the preconditioning start time accordingly, thereby optimizing charging efficiency while maintaining straightforward implementation through existing vehicle systems.
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.