EV Battery Temperature Control for Charging Readiness
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Electric vehicle control devices face challenges in managing battery temperature and maintaining sufficient battery capacity while en route to a charging station, as cooling or heating the battery consumes power, potentially leading to battery shortage during travel.
Innovation Solution
An electric vehicle control device that includes a battery temperature adjustment section, current position recognition, reachable charging station recognition, charging necessity determination, and running control sections to perform preliminary temperature adjustments and manage battery capacity, ensuring the battery is within a suitable temperature range and maintaining sufficient capacity for efficient charging upon arrival at a charging station.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If the battery temperature adjustment section is actuated to cool or heat the battery, then the battery temperature is maintained within a suitable charging temperature range, but the remaining capacity of the battery decreases due to power consumption
Solution Approach 1:
The control device performs preliminary temperature adjustment processing before the electric vehicle arrives at the charging station. By anticipating the need for temperature adjustment and executing it in advance when the vehicle is still moving, the system prepares the battery for optimal charging conditions without waiting until the vehicle stops at the charging station.
Solution Approach 2:
The running control section dynamically adjusts the upper limit speed of the electric vehicle based on real-time calculations of estimated remaining capacity. When temperature adjustment is needed, the system modifies the speed profile to ensure sufficient capacity remains after power consumption for cooling or heating, making the speed limit adjustable rather than fixed.
2Loss of time
If the electric vehicle runs at higher speed to reach the charging station faster, then the time to reach the charging station is reduced, but the estimated remaining capacity decreases due to increased power consumption
Solution Approach 1:
The system dynamically adjusts the upper limit speed based on multiple factors including distance to charging station, battery state, and temperature adjustment requirements. The running control section continuously monitors and modifies the speed profile to optimize the balance between arrival time and remaining capacity, rather than maintaining a constant speed limit.
Solution Approach 2:
The control device calculates the estimated remaining capacity by subtracting both the estimated running electricity amount and the estimated temperature control electricity amount from the current remaining capacity. This feedback mechanism allows the system to adjust speed limits based on real-time power consumption projections, ensuring sufficient capacity remains for both travel and temperature management.
3Quantity of substance
If the running control section performs running limitation processing to maintain remaining capacity securing condition, then the battery capacity is preserved, but the speed or acceleration of the electric vehicle is limited
Solution Approach 1:
The system performs preliminary temperature adjustment processing before the vehicle arrives at the charging station, rather than waiting until arrival. This advance action allows temperature management to be completed while the vehicle is still in motion, reducing the need for speed limitations that would be required if temperature adjustment had to wait until the vehicle stopped.
Solution Approach 2:
The running control section changes the speed parameter dynamically by adjusting the upper limit speed based on calculated remaining capacity requirements. Rather than maintaining a fixed speed limit, the system modifies the speed parameter in response to changing conditions such as distance to charging station, battery temperature, and power consumption rates.
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 solution enables more effective control of the electric vehicle's route and battery temperature management, ensuring efficient charging by maintaining the battery's capacity and temperature within optimal ranges, thereby reducing the time needed for charging and preventing battery shortage during travel.
Implementation Method 1
a battery temperature adjustment section that is actuated by power supplied from the battery to heat or cool the battery
Implementation Method 2
cool a battery via a cooling device
Implementation Method 3
heat the battery via a heating device
Data Source
AI summary
During running of an electric vehicle, a battery temperature control section performs preliminary temperature adjustment processing so that a temperature of the battery at a point of time of arrival at a reachable charging station is within a suitable charging temperature range. When the preliminary temperature adjustment processing is performed, a running control section performs processing for maintaining a remaining capacity securing condition that an estimated remaining capacity is equal to or exceeds a remaining capacity criterion value, the estimated remaining capacity resulting from subtraction of an estimated running electricity amount and an estimated temperature control electricity amount from a remaining capacity of the battery at a current point of time.