EV Battery Pre-Conditioning Decisions Based on Charging Conditions
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Solution Overview
Problem
Current battery pre-conditioning methods consume additional energy and can lead to increased charging time and cost, with the decision to pre-condition often based on arrival time rather than optimal charging conditions, resulting in inefficient energy use and potential mismatch between pre-conditioning and actual charging start times.
Innovation Solution
A method and system that determine whether to perform battery pre-conditioning by comparing charging conditions with and without pre-conditioning, considering factors like expected charging cost, time, state of charge, and battery temperature, using a system with a searching unit to find suitable charging stations and a determining unit to output relevant information for informed decision-making.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If battery pre-conditioning is performed to raise battery temperature, then charging time is shortened, but energy consumption increases
Solution Approach 1:
The system performs preliminary heating of the battery using the vehicle's heat pump system before charging begins. By pre-conditioning the battery temperature during vehicle operation rather than at the charging station, the system prepares the battery for optimal charging conditions without requiring additional energy at the charging location, thereby reducing overall energy consumption while maintaining short charging times
Solution Approach 2:
The system utilizes the vehicle's own heat pump and thermal management system to heat the battery during normal operation. This self-service approach allows the battery to be pre-conditioned using energy already consumed during vehicle operation, eliminating the need for separate pre-conditioning energy input at the charging station and thus reducing total energy consumption
2Temperature
If battery pre-conditioning is performed based on arrival time, then charging temperature optimization is achieved, but control complexity increases due to waiting time management
Solution Approach 1:
The system dynamically adjusts the pre-conditioning control strategy based on real-time parameters including predicted waiting time, ambient temperature, battery current temperature, and charging schedule. Rather than using a fixed arrival-time-based control, the system continuously adapts the heating duration and intensity, simplifying control by eliminating the need for complex waiting time management while maintaining optimal battery temperature for charging
3Productivity
If battery pre-conditioning is performed, then charging efficiency is improved, but charging cost increases due to additional energy consumption
Solution Approach 1:
The system performs preliminary battery heating during vehicle operation using the heat pump system before the vehicle arrives at the charging station. By completing the pre-conditioning action in advance during normal vehicle operation, the system ensures optimal charging efficiency at the charging station without incurring additional charging costs, as the heating energy is consumed during vehicle operation rather than during charging
Solution Approach 2:
The system converts the energy that would otherwise be wasted during vehicle operation into beneficial pre-conditioning of the battery. By utilizing the heat pump system during normal vehicle operation to heat the battery, the system transforms routine energy consumption into a useful function that improves charging efficiency, thereby reducing overall energy waste and charging costs
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 approach allows for rational determination of battery pre-conditioning, preventing wasteful energy consumption and maintaining charging efficiency by considering multiple factors, including energy consumption and temperature changes, thereby optimizing charging operations.
Implementation Method 1
The battery generates heat as the energy stored in the battery is used for traveling.
Implementation Method 2
the temperature of the battery is appropriately raised in advance by a method or the like of circulating a fluid (e.g., water) heated by an electric heater around the battery
Implementation Method 3
circulating a fluid (e.g., water) heated by an electric heater around the battery
Data Source
AI summary
A method and system for providing information for determining whether to enter battery pre-conditioning includes: searching for at least one charging station that satisfies a certain condition based on a current location of a vehicle; determining charging condition information about at least one found charging station for each case of performing battery pre-conditioning and not performing battery pre-conditioning; and outputting the determined charging condition information.