High-Voltage Battery Cool-Down Display for Peak Power Recovery
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Solution Overview
Problem
In electrified vehicles, high voltage battery system performance is negatively impacted by temperature, but this information is not conveyed to the driver, leading to potential suboptimal powertrain operation.
Innovation Solution
A system and method that utilizes sensors to monitor battery and ambient conditions, determining cool-down parameters and displaying them on a human machine interface (HMI) to inform the driver about the time required to achieve optimal battery performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the high voltage battery system operates at elevated temperature, then the vehicle can maintain operation under high load conditions, but the battery performance deteriorates and reliability decreases
Solution Approach 1:
The system continuously monitors battery temperature through temperature sensors and provides real-time feedback to the controller. The controller calculates cool-down parameters and communicates them to the driver via HMI, enabling the driver to adjust operation based on actual battery thermal state, thus preventing performance deterioration while maintaining operational flexibility.
Solution Approach 2:
The system proactively calculates and displays cool-down parameters before the battery reaches critical temperature levels. By providing advance notice of required cool-down time and performance restrictions, the system allows the driver to take preliminary actions (such as reducing load or activating cooling) before performance degradation occurs.
2Adaptability or versatility
If the driver is provided with detailed battery temperature information and cool-down parameters, then the driver can make informed decisions to optimize performance, but the device complexity increases
Solution Approach 1:
The controller acts as an intermediary that processes complex sensor data and calculates cool-down parameters using predetermined algorithms. Instead of presenting raw temperature data and complex calculations to the driver, the system translates this into user-friendly cool-down parameters and performance restriction indicators, maintaining driver adaptability while hiding system complexity.
Solution Approach 2:
The system transforms multiple physical parameters (battery temperature, ambient temperature, cooling system capacity) into a simplified cool-down parameter that is easy for the driver to understand and act upon. This parameter transformation maintains driver decision-making capability while reducing the perceived 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 drivers to make informed decisions based on battery cooling status, enhancing powertrain efficiency and performance by providing real-time temperature and cool-down information.
Implementation Method 1
The sensors include at least one temperature sensor disposed on at least one battery module of the high voltage battery system, the at least one temperature sensor configured to sense a maximum temperature of the at least one battery module
Implementation Method 2
The sensors also include a coolant temperature sensor that senses an inlet coolant temperature at the high voltage battery system
Implementation Method 3
the battery pack assembly includes a cooling system wherein a cooling liquid is circulated along a cooling plate for cooling the modules and the battery pack assembly
Implementation Method 4
a cooling liquid is circulated along a cooling plate for cooling the modules
Data Source
AI summary
A method for communicating temperature information of a high voltage battery system of an electrified vehicle is provided. The method includes: receiving, at a controller, sensed parameters including a maximum temperature of the high voltage battery system and a coolant temperature at the high voltage battery system; determining, at the controller, cool down parameters indicative of a time required to return the high voltage battery system from an elevated temperature to a reduced temperature suitable to achieve peak performance; sending, from the controller, a signal to a human machine interface indicative of the cool down parameters; and displaying, at the HMI, the cool down parameters