Off-Charge Battery Conditioning for Electrified Vehicle Performance
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Solution Overview
Problem
Electrified vehicles face reduced performance and drivability due to limited battery charge and discharge capabilities at extreme temperatures, as there is no engine to compensate for these limitations, affecting range and usability.
Innovation Solution
A method and system that condition the battery of an electrified vehicle while off charge in response to operator requests for improved performance, involving determining the battery's state, estimating energy requirements, and communicating the impact on range, with options to heat or cool the battery to achieve desired performance levels, allowing operators to choose between performance and range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery is conditioned (heated or cooled) to improve performance capability, then the battery temperature is optimized for better charge and discharge power, but the vehicle range is reduced due to energy consumption for conditioning
Solution Approach 1:
The system performs preliminary battery conditioning by heating or cooling the battery before the vehicle is driven, when the vehicle is off charge and connected to a charging station. This advance preparation ensures the battery reaches optimal temperature for performance without consuming vehicle range energy, as the conditioning energy is drawn from the charging infrastructure.
Solution Approach 2:
The system dynamically adjusts battery conditioning based on predicted usage patterns and operator preferences. The controller determines whether to prioritize performance or range by analyzing operator selections and usage schedules, allowing flexible adaptation of conditioning strategies to match actual driving needs and environmental conditions.
2Power
If the battery is conditioned while off charge to achieve desired performance level, then the charge and discharge power limits are improved, but the amount of energy required for conditioning reduces the available range
Solution Approach 1:
The system performs preliminary battery conditioning by heating or cooling the battery before the vehicle is driven, when the vehicle is off charge and connected to a charging station. This advance preparation ensures the battery reaches optimal temperature for performance without consuming vehicle range energy, as the conditioning energy is drawn from the charging infrastructure.
Solution Approach 2:
The system utilizes the charging infrastructure to provide the energy needed for battery conditioning, rather than drawing from the vehicle's stored energy. The charging station serves the dual purpose of recharging the battery and providing thermal energy for conditioning, making the system self-sufficient during off-charge periods.
3Ease of operation
If the battery is kept at optimal temperature for maximum performance, then the drivability is improved, but the energy consumption increases and range decreases
Solution Approach 1:
The system performs preliminary battery conditioning by heating or cooling the battery before the vehicle is driven, when the vehicle is off charge and connected to a charging station. This advance preparation ensures the battery reaches optimal temperature for performance without consuming vehicle range energy, as the conditioning energy is drawn from the charging infrastructure.
Solution Approach 2:
The system preemptively conditions the battery during off-charge periods to prevent performance degradation that would occur if conditioning were delayed until driving began. By acting in advance during idle charging periods, the system eliminates the need for energy-consuming conditioning during actual driving, thus preserving range while maintaining drivability.
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 operators to select improved vehicle performance as a tradeoff for decreased range by optimizing battery temperature and state of charge, providing enhanced driving capabilities without compromising usability.
Implementation Method 1
The controller can then condition the battery by heating or cooling the battery to place the battery in a condition to provide one or more various levels of performance
Implementation Method 2
The controller can then condition the battery by heating or cooling the battery to place the battery in a condition to provide one or more various levels of performance
Data Source
AI summary
A method according to an exemplary aspect of the present disclosure includes, among other things, conditioning a battery of an electrified vehicle while off charge in response to an operator request for improved performance as a tradeoff for decreased range. An electrified vehicle system according to an exemplary aspect of the present disclosure includes, among other things, a battery, an electric machine configured to receive electric power from the battery to drive vehicle wheels, and a system control that generates a control signal to condition the battery while off charge in response to an operator request for improved performance as a tradeoff for decreased range.