EV Battery Preconditioning Control for Charging Efficiency
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Solution Overview
Problem
Existing electric vehicles face challenges in managing battery temperature effectively, leading to reduced charging capacity, potential damage from overcharging, and inefficient charging due to inappropriate temperature conditions, which affect mileage and energy efficiency.
Innovation Solution
A battery temperature control apparatus and method that allows drivers to directly monitor battery state and adjust the temperature through a preconditioning function, enabling automatic or manual control based on driving and charging habits, reducing energy consumption and improving fuel economy by selectively stopping heating or cooling operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the battery temperature is maintained at optimum temperature through automatic preconditioning, then charging capacity and performance are improved, but energy consumption increases
Solution Approach 1:
The system allows the battery management system to automatically monitor and maintain optimal battery temperature through preconditioning operations, enabling the battery to self-regulate its temperature state without requiring constant manual intervention from the driver, thus ensuring reliable charging capacity while managing energy consumption autonomously
Solution Approach 2:
The preconditioning function is designed to be dynamically adjustable, allowing drivers to select between automatic mode (for optimal performance) and manual mode (for energy savings), with the system adapting its temperature control operations based on real-time battery state and driver preferences, balancing charging capacity and energy consumption
2Productivity
If the preconditioning function is continuously operated to optimize battery temperature, then charging efficiency is improved, but fuel economy deteriorates
Solution Approach 1:
The preconditioning function operates periodically rather than continuously, activating temperature control operations only when needed to reach or maintain optimal battery temperature ranges, and suspending operations when the battery is already within the optimal range, thus improving charging efficiency while reducing unnecessary energy consumption and preserving fuel economy
Solution Approach 2:
The system changes operational parameters by allowing drivers to select between automatic preconditioning (prioritizing charging efficiency) and manual preconditioning (prioritizing fuel economy), with the system adjusting its temperature control intensity and duration based on the selected mode and real-time battery conditions
3Ease of operation
If the driver is provided with direct control over battery temperature, then ease of operation is improved, but device complexity increases
Solution Approach 1:
The system introduces a user-friendly interface as an intermediary between the driver and the complex battery temperature control system, providing simplified controls that allow drivers to select between automatic and manual modes and view battery status information without requiring them to understand the underlying complex temperature management algorithms and battery chemistry
Data Source
AI summary
A battery temperature control apparatus for electric vehicles, the battery temperature control apparatus including a temperature measurement unit configured to measure a temperature of a battery mounted in an electric vehicle, a display unit configured to display state information of the battery based on temperature information of the battery measured by the temperature measurement unit, and a controller configured to perform control such that a preconditioning function to maintain the temperature of the battery at a predetermined optimum temperature is selectively turned ON/OFF by a user based on the state information displayed on the display unit.