Battery Temperature Preconditioning for Vehicle-to-Vehicle Charging
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Solution Overview
Problem
Conventional vehicle-to-vehicle charging systems face limitations in charging speed due to battery temperature conditions, particularly in sub-zero weather, affecting both service providers and customers.
Innovation Solution
A system and method for controlling battery temperature in vehicle-to-vehicle charging by using a battery heater or chiller to adjust the battery temperature based on estimated charging time and schedule information, optimizing charging speed and operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If vehicle-to-vehicle charging is performed without battery temperature control, then charging can proceed without additional components, but charging speed is limited by sub-zero battery temperature conditions
Solution Approach 1:
The system performs preliminary heating of the battery before charging begins. The controller calculates the time required to reach optimal charging temperature and activates the battery heater in advance, ensuring the battery is ready for fast charging when the power transmitting vehicle arrives, thus resolving the contradiction between charging speed and system complexity.
Solution Approach 2:
The battery heating system uses the battery's own thermal management resources (battery heater integrated into the battery pack) rather than requiring external heating equipment. This self-service approach enables temperature control without adding significant external complexity, allowing fast charging to proceed when temperature conditions are met.
2Productivity
If battery heating is performed to increase charging speed, then charging performance improves, but energy consumption increases
Solution Approach 1:
The system dynamically adjusts the heating strategy based on real-time conditions. The controller calculates the charge lead time and compares it with the time required to heat the battery to optimal temperature. Heating is activated only when the calculation shows sufficient time before charging begins, optimizing energy usage while maintaining charging operation efficiency.
Solution Approach 2:
The system changes operational parameters (heating power, heating duration) based on calculated requirements. Rather than continuous or fixed heating, the controller adjusts heating parameters dynamically based on battery temperature, ambient conditions, and timing calculations, reducing unnecessary energy consumption while maintaining productivity.
3Loss of time
If charge lead time is calculated and used to control heating, then charging schedule optimization improves, but control system complexity increases
Solution Approach 1:
The controller implements feedback by continuously monitoring battery temperature, calculating charge lead time, and adjusting heating control accordingly. The system receives information from the vehicle-to-vehicle charging service server, calculates required heating time, and activates heating only when calculations indicate optimal timing, optimizing charging schedules through intelligent feedback-based control.
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
Enhances charging speed and efficiency, optimizing charging operations for providers and improving customer convenience by ensuring fast charging regardless of battery temperature conditions.
Implementation Method 1
controls a battery temperature of the power receiving electric vehicle by controlling operation of a battery heater or a battery chiller
Implementation Method 2
controls a battery temperature of the power receiving electric vehicle by controlling operation of a battery heater or a battery chiller
Data Source
AI summary
An embodiment system for controlling a battery temperature for vehicle-to-vehicle charging includes an info controller provided in a power receiving electric vehicle and configured to receive information on a power transmitting electric vehicle and charging schedule information from a vehicle-to-vehicle charging service server, a vehicle controller configured to receive the information on the power transmitting electric vehicle and the charging schedule information from the info controller, to receive battery temperature information of the power receiving electric vehicle from a battery controller, and to calculate an estimated charging time of vehicle-to-vehicle charging by the power transmitting electric vehicle, and a battery temperature controller configured to control the battery temperature of the power receiving electric vehicle by controlling operation of a battery heater or a battery chiller, wherein the vehicle controller is configured to control the battery temperature controller in consideration of the estimated charging time.