Vehicle Battery Preheating Control Using Stored Heat
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Solution Overview
Problem
Existing heating control methods for vehicles fail to efficiently adjust battery temperature and utilize stored heat to effectively preheat vehicle compartments before starting, leading to increased electricity costs and reduced cruising distances.
Innovation Solution
A heating control method that includes charging the battery before the start time, warming it using external power, and utilizing battery heat for compartment heating, with charge and warming times determined based on the start time to minimize waste heat and electricity consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the battery is charged continuously from external power supply before vehicle start, then the battery temperature increases and heat is stored, but the electricity consumption increases and cruising distance is reduced
Solution Approach 1:
The system performs preliminary charging and warming of the battery before the vehicle is actually needed for operation. By determining an appropriate warming end time based on the vehicle start time and warming rate, the battery is prepared in advance to store heat that will be used for compartment heating, thereby reducing the need for high-power heating operation during vehicle operation and extending cruising distance.
2Productivity
If the battery warming time is extended to store more heat, then the heating efficiency improves, but the time required for charge and warm increases
Solution Approach 1:
The system dynamically adjusts the charging and warming duration based on real-time parameters including battery temperature, battery capacity, ambient temperature, and vehicle start time. The control device calculates the required warming period to achieve optimal battery temperature for heat storage, balancing the need for sufficient heat storage with the constraint of limited time before vehicle operation.
Solution Approach 2:
The system changes operational parameters such as charging power and warming power based on battery state and environmental conditions. By adjusting these parameters dynamically, the system optimizes the rate of heat storage while minimizing the total time required for preparation, ensuring efficient use of both time and energy resources.
3Quantity of substance
If the battery temperature is adjusted to be too high before start, then the heat storage increases for compartment heating, but the energy waste increases
Solution Approach 1:
The control device continuously monitors battery temperature, battery capacity, and other parameters during the charging and warming process. Based on this feedback, it adjusts the charging and warming power in real-time to achieve the optimal battery temperature for heat storage without excessive energy consumption. The system stops charging and warming when the predetermined conditions are met, preventing energy waste from over-heating.
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 method allows for efficient battery temperature adjustment and reduced electricity costs by using stored battery heat for preheating, thereby improving vehicle efficiency and extending cruising distance.
Implementation Method 1
heat stored in a battery due to charge and warming of the battery
Implementation Method 2
vehicle compartment is heated through a use of heat stored in the battery
Data Source
AI summary
A vehicle has a chargeable battery and an air conditioner heating a vehicle compartment. The vehicle travels by electric power of the battery. A heating control method for the vehicle includes a start time acquisition step in which a start time of the vehicle is acquired based on schedule information of the vehicle, a charge step in which the battery is charged, from a first time before the start time, with an external power supply, a warming step in which the battery is warmed, from a second time between a charge completion time and the start time, by electric power from the external power supply, and a heating step in which the vehicle compartment is heated after the start time. An operation mode of the heating step includes a battery-heat absorption mode in which the vehicle compartment is heated through a use of heat stored in the battery.