EV Battery Preheating via Location-Based Time Estimation
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Solution Overview
Problem
In electric vehicles used for car sharing systems, users often do not set a driving start time, making it impossible to warm up the battery at the optimal timing, which affects the battery's temperature and performance.
Innovation Solution
An electric vehicle system that includes a power storage device, a temperature raising device, and a control unit that estimates the driving start time based on the user's location and current conditions, setting a temperature-rising start time to preheat the battery before the start of the drive.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the driving start time is not set by the user, then the reservation system is more flexible and easier to use, but the battery cannot be warmed up at the optimal timing
Solution Approach 1:
The control device performs preliminary actions by estimating the driving start time based on the communication device's position and other data before the actual driving begins. This allows the battery warming process to start in advance at an appropriately set temperature-rising start time, ensuring the battery is ready when needed without requiring the user to specify an exact start time.
2Adaptability or versatility
If the driving start time is estimated based on communication device position, then the battery can be warmed up appropriately without user input, but the estimation accuracy may be insufficient
Solution Approach 1:
The control device uses feedback by continuously monitoring the communication device's position and other relevant data to refine the driving start time estimation. The system adjusts the estimated driving start time based on the movement speed and direction of the communication device, and other factors such as weather conditions and historical data, to improve estimation accuracy over time.
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
This configuration allows for appropriate battery temperature increase even when the driving start time is unknown, ensuring optimal performance and efficiency.
Implementation Method 1
a temperature raising device configured to increase temperature of the power storage device
Data Source
AI summary
There is provided an electrically driven vehicle used for a car sharing system and configured to appropriately increase the temperature of a power storage device. The electrically driven vehicle used for the car sharing system is provided with a power storage device and a temperature raising device configured to increase temperature of the power storage device. When a user operates a communication device to make a direct reservation or an indirect reservation of the electrically driven vehicle for driving, the electrically driven vehicle estimates a driving start time of the vehicle, based on the position of the communication device, sets a temperature-rising start time of the power storage device, based on the temperature of the power storage device and the estimated driving start time, and controls the temperature raising device to start a temperature increase of the power storage device at the set temperature-rising start time.