Battery Thermal Management via Average Temperature Feedback
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Solution Overview
Problem
Current thermal management systems for electric vehicle batteries lack efficiency in cooling and heating strategies, leading to reduced driving range and battery lifespan due to inadequate temperature regulation based on real-time and predictive conditions.
Innovation Solution
A system that monitors and calculates actual and target battery temperatures, predicts future temperatures and state of charge, and adjusts cooling behavior using coefficients of performance to optimize thermal management, thereby extending driving range and battery lifespan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the system cools the battery whenever the current temperature exceeds the target lifetime temperature, then the battery temperature is maintained within optimal range, but energy is wasted cooling the battery even when the average temperature is already acceptable
Solution Approach 1:
The system performs preliminary assessment by comparing the actual average battery temperature to the target lifetime temperature before initiating cooling. This preliminary check prevents unnecessary cooling actions when the battery temperature is already within acceptable ranges, thereby conserving energy while maintaining proper temperature control.
Solution Approach 2:
The system continuously monitors both current battery temperature and actual average battery temperature, using this feedback to dynamically adjust cooling decisions. By incorporating real-time temperature data and average temperature trends, the system optimizes cooling activation to maintain temperature control while minimizing energy consumption.
2Use of energy by moving object
If the system delays cooling the battery to save energy, then driving range is extended, but the battery may overheat and suffer reduced lifespan
Solution Approach 1:
The system performs preliminary assessment by comparing the actual average battery temperature to the target lifetime temperature before initiating cooling. This preliminary check prevents unnecessary cooling actions when the battery temperature is already within acceptable ranges, thereby conserving energy while maintaining proper temperature control.
Solution Approach 2:
The system continuously monitors both current battery temperature and actual average battery temperature, using this feedback to dynamically adjust cooling decisions. By incorporating real-time temperature data and average temperature trends, the system optimizes cooling activation to maintain temperature control while minimizing energy consumption.
3Device complexity
If the system uses simple current temperature threshold comparison, then the control logic is simple, but it fails to account for thermal trends and may make suboptimal cooling decisions
Solution Approach 1:
The system performs preliminary assessment by comparing the actual average battery temperature to the target lifetime temperature before initiating cooling. This preliminary check prevents unnecessary cooling actions when the battery temperature is already within acceptable ranges, thereby conserving energy while maintaining proper temperature control.
Solution Approach 2:
The system continuously monitors both current battery temperature and actual average battery temperature, using this feedback to dynamically adjust cooling decisions. By incorporating real-time temperature data and average temperature trends, the system optimizes cooling activation to maintain temperature control while minimizing energy consumption.
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
The system effectively extends the driving range and battery lifespan by optimizing thermal management based on real-time and predictive data, reducing unnecessary energy consumption and preventing overheating.
Implementation Method 1
the system cools the battery to below the current battery temperature
Implementation Method 2
the system cools the battery to below the maximum limit temperature
Data Source
AI summary
A system and method for managing thermal energy of a vehicle having a battery and an electric propulsion system are provided. The system monitors a current battery temperature, calculates an actual average battery temperature, and compares the calculated actual average battery temperature to a target lifetime battery temperature. If the actual average battery temperature is greater than the target lifetime battery temperature, and the current battery temperature is greater than the target lifetime battery temperature, the system cools the battery to below the current battery temperature. However, if the actual average battery temperature is less than the target lifetime battery temperature, and the current battery temperature is greater than the target lifetime battery temperature, the system delays cooling the battery. Therefore, the system may avoid expending energy to cool the battery in certain conditions.