EV Battery Race Prep Modes for Drag and Track Thermal Control
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Solution Overview
Problem
Electrified vehicles face challenges in maintaining optimal battery performance for both long track races and short drag races due to temperature variations affecting energy supply, necessitating improved race preparation modes.
Innovation Solution
A vehicle system with a controller that initiates race preparation modes, including drag and track modes, using HVAC systems and fans to adjust battery temperature and charge levels based on user selection and temperature thresholds, ensuring the battery is at optimal conditions for the specific race type.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the battery temperature is kept cool for long track races, then the battery can supply energy over extended periods, but the battery cannot deliver sufficient power for short burst drag events
Solution Approach 1:
The system performs preliminary temperature adjustment before the race event by detecting the race type (drag race or track race) and actively heating or cooling the battery to the appropriate temperature range. This preliminary action ensures the battery is in the optimal thermal state before power delivery begins, resolving the contradiction between duration and power output capabilities
2Power
If the battery temperature is raised for drag events, then the battery can deliver high power for short bursts, but the battery cannot maintain energy supply for long track races
Solution Approach 1:
The system performs preliminary temperature adjustment before the race event by detecting the race type (drag race or track race) and actively heating or cooling the battery to the appropriate temperature range. This preliminary action ensures the battery is in the optimal thermal state before power delivery begins, resolving the contradiction between power output and energy supply duration
3Ease of operation
If a single battery temperature setting is used for all racing conditions, then the system is simple to operate, but the battery cannot optimize performance for different race types
Solution Approach 1:
The system dynamically adjusts the battery temperature based on the detected race type. The controller automatically selects the appropriate temperature management strategy (heating for drag races, cooling for track races) without requiring manual intervention from the driver. This dynamic adaptation resolves the contradiction by maintaining operational simplicity while achieving performance optimization through automated thermal management
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 the battery to maintain energy supply effectively by adjusting temperature and charge according to race duration, enhancing performance in both long track and short drag events.
Implementation Method 1
the controller communicates a signal to the HVAC system to warm the battery system based on a determination that the measured temperature of the battery system is below the warm temperature threshold
Implementation Method 2
the controller communicates a signal to the HVAC system to cool the battery system based on a determination that the measured temperature of the battery system is above the cold temperature threshold
Implementation Method 3
the vehicle system further comprises a fan configured to cool the battery system, wherein the controller communicates a signal to the fan to cool the battery system
Data Source
AI summary
A vehicle system for an electrified vehicle that implements a race preparation mode for preparing the electrified vehicle for a race event is provided. The vehicle system includes a motor, a battery system, an instrument panel cluster and a controller. The controller initiates the race preparation mode based on user selection of the race preparation mode. The controller determines whether a drag race mode is selected and determines whether a measured temperature of the battery system is below a warm temperature threshold. The temperature of the battery system is elevated based on the measured temperature being below the warm temperature threshold. The controller determines whether a track mode is selected and determines whether a measured temperature of the battery system is above a cold temperature threshold. The temperature of the battery system is reduced based on the measured temperature being above the cold temperature threshold.