Battery Pack Utility Estimation for Electric Vehicle Swap Management
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Solution Overview
Problem
The popularization of battery electric vehicles is hindered by the limitations of battery energy density, leading to short ranges and high costs, with the battery swap mode facing challenges in managing numerous batteries with unpredictable usage patterns, which affects service efficiency and service life.
Innovation Solution
A method and device for estimating the utility of battery pack replacement by acquiring state data, including usage history and performance parameters, to determine a utility value that characterizes the impact of replacing one battery pack with another on service efficiency and service life, facilitating improved management and extended service life through corrected charging practices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery swap mode is implemented to reduce charging time and improve user experience, then service efficiency is improved, but managing enormous number of batteries with random and unpredictable usage patterns becomes complex and difficult
Solution Approach 1:
The patent implements a utility evaluation mechanism that continuously monitors battery usage patterns, service life, and performance data to dynamically adjust battery allocation and replacement strategies. This feedback loop enables the system to optimize battery management decisions based on actual usage patterns, resolving the contradiction between improved service efficiency and increased management complexity.
Solution Approach 2:
The patent introduces multiple evaluation parameters including utility values, service life predictions, and usage pattern analytics to transform the battery management system from a simple swap operation to an intelligent optimization system. By changing the parameters considered in battery management (from basic charge/discharge cycles to comprehensive utility metrics), the system can handle complex usage patterns while maintaining high service efficiency.
2Reliability
If batteries with low energy density are used to ensure safety and reduce costs, then safety and cost are improved, but the range provided per charge is limited
Solution Approach 1:
The patent divides the battery system into multiple replaceable battery packs, allowing the vehicle to maintain a compact, safe battery configuration while extending total driving range through multiple swaps. This segmentation enables the vehicle to carry smaller, safer battery units that can be quickly exchanged at charging stations, effectively solving the range limitation without compromising safety.
Solution Approach 2:
The patent implements pre-charged battery packs stored at charging stations, ready for immediate swap. This preliminary action allows users to quickly exchange depleted battery packs for fully charged ones, effectively extending the vehicle's operational range without requiring large, high-density batteries in the vehicle itself, thus maintaining safety while solving the range problem.
Data Source
AI summary
Provided are a method and device for estimating the utility of replacement of a battery pack for an electric vehicle, and a charging management method and system based on the method and device. The method comprises the following steps: acquiring state data associated with a first battery pack and a second battery pack, the state data comprising usage history of the first battery pack and performance parameters of the first battery pack and the second battery pack; and determining a utility value according to the state data, wherein the utility value is used to characterize a degree of impact of an operation of replacing the first battery pack with the second battery pack on the service efficiency and service life of a battery pack set to which the first battery pack and the second battery pack belong. The method facilitates improving the service efficiency of a managed battery in a battery swap mode and extending the overall service life thereof.