EV Battery Conditioning Modes for Charging Time and Output Control
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Solution Overview
Problem
The performance and efficiency of electric vehicle batteries are affected by temperature variations, leading to prolonged charging times and reduced output, necessitating effective temperature management to improve driving performance and charging efficiency.
Innovation Solution
An electric vehicle system and method that manages battery conditions through multiple modes: automatic (recommended and custom) and manual (free) modes, utilizing a head unit, VCU, and BMS to control and display battery operations, including heating and cooling, to optimize temperature and charging times.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If battery temperature is not managed, then charging time increases significantly, but battery output performance deteriorates
Solution Approach 1:
The system performs preliminary battery temperature conditioning before charging operations. The battery management system detects battery temperature and proactively initiates heating or cooling operations to bring the battery to optimal temperature range, thereby preventing charging time extension while maintaining battery output performance.
Solution Approach 2:
The battery management system continuously monitors battery temperature and provides feedback control by adjusting heating or cooling operations based on detected temperature conditions. This closed-loop control ensures the battery remains in optimal temperature range, simultaneously minimizing charging time and maintaining high output performance.
2Duration of action of moving object
If battery is cooled to extend range, then driving distance increases, but charging time becomes excessively long
Solution Approach 1:
The system dynamically adjusts battery temperature management parameters based on driving conditions and charging status. When charging is detected or anticipated, the system modifies temperature control parameters to prevent excessive cooling, thereby maintaining acceptable charging times while still enabling extended driving range during operation.
Solution Approach 2:
The battery temperature management system operates dynamically, adapting its control strategy based on real-time conditions such as driving state, ambient temperature, and charging status. This dynamic adjustment allows the system to optimize for driving range during operation and for charging efficiency when connected to power sources.
3Adaptability or versatility
If multiple battery management modes are provided, then user flexibility increases, but system complexity increases
Solution Approach 1:
The battery management system is segmented into distinct operational modes (e.g., extended range mode, fast charging mode, balanced mode). Each mode has specific temperature management characteristics, allowing users to select appropriate modes for different scenarios. This segmentation provides user flexibility while managing complexity through clear mode definitions.
Solution Approach 2:
The system includes automatic mode selection capability that uses sensor data and operational context to autonomously determine the most appropriate battery management mode. This self-service feature reduces the burden on users while maintaining multiple management modes, effectively providing adaptability without requiring users to understand system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enables efficient battery temperature management, reducing charging times and enhancing driving performance by allowing preset or user-adjusted conditions, with visual monitoring and remote control options, without additional costs.
Implementation Method 1
heats and cools the battery
Implementation Method 2
heats and cools the battery
Data Source
AI summary
To shorten a charging time of a battery and improve driving performance, proposed is an electric vehicle for performing battery condition management by dividing a management mode of the battery into a recommended mode according to a preset program, a custom mode according to a program in which a user modifies a condition applied by the preset program, and a free mode according to compulsory intention of the user, and a battery conditioning management method. The electric vehicle controls the temperature of the battery installed in the electric vehicle according to a preset battery management mode using a head unit, a CCS server, a VCU, and a BMS.