EV Charging Plan Using Wireless Heat for Battery Temperature
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Solution Overview
Problem
Existing vehicle charging systems do not efficiently utilize thermal energy generated by wireless charging, leading to suboptimal energy efficiency and increased thermal load.
Innovation Solution
A plan preparation system that calculates the amount of required heat for a movable body's battery and adjusts the ratio of wireless charging in the charging plan to maximize energy efficiency by utilizing thermal energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If wireless charging type is used to charge the battery, then charging speed is improved, but charging efficiency deteriorates resulting in thermal energy loss
Solution Approach 1:
The patent converts the harmful thermal energy loss from wireless charging into a beneficial resource by calculating the required heat amount and incorporating it into charging plan optimization. The system determines how much heat is needed for the battery and uses wireless charging's thermal output to meet this requirement, thereby converting energy loss into useful thermal energy for battery temperature management.
2Loss of energy
If ratio of wireless charging is increased to obtain thermal energy, then energy efficiency is improved, but battery temperature control becomes more difficult
Solution Approach 1:
The patent implements a feedback mechanism by calculating the required heat amount based on battery temperature and using this information to optimize the charging plan. The system continuously monitors battery temperature, determines the heat deficit or surplus, and adjusts the wireless charging ratio accordingly to maintain optimal temperature while maximizing energy efficiency.
Solution Approach 2:
The charging plan is made dynamic by adjusting the ratio of wireless charging based on real-time battery temperature conditions. The system flexibly modifies the charging strategy, increasing wireless charging ratio when heat is needed and decreasing it when sufficient heat is already present, thereby adapting to changing thermal requirements.
3Ease of operation
If charging plan considers only electric power, then charging simplicity is maintained, but energy efficiency deteriorates
Solution Approach 1:
The patent makes the charging plan multi-functional by simultaneously optimizing for both electric power delivery and thermal energy utilization. The system calculates required heat amount and integrates it into the charging plan optimization process, enabling a single charging plan to address both electrical charging needs and thermal management requirements, thereby improving energy efficiency without significantly complicating the charging strategy.
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 energy efficiency by increasing the ratio of wireless charging when more heat is required, effectively utilizing thermal energy to achieve the target battery temperature.
Implementation Method 1
a vehicle-mounted battery is chargeable through charging by a plurality of charging types (a plug-in charging type, a wireless charging type, and a solar charging type)
Implementation Method 2
Charging by the wireless charging type has been known to be lower in charging efficiency than the plug-in charging type. Lowering in this charging efficiency results in thermal energy
Data Source
AI summary
A server prepares a charging plan for a travel route to a destination. The server obtains an outside air temperature and a battery temperature. The server reads a map from a storage, and calculates an amount of required heat required for increasing the battery temperature to a target temperature by collating the outside air temperature and the battery temperature with the map. The server prepares the charging plan such that an SOC of a battery at the time of arrival at the destination attains to a prescribed SOC and a sum of an amount of heat generation by charging of the battery at a charging point and an amount of heat generation by charging and discharging of the battery with travel of a vehicle is equal to the amount of required heat.