Contactless EV Charging With Day-Specific Target SOC Control
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Contactless charging systems risk battery degradation due to full charging, which can lead to unnecessary wear and tear, despite providing convenience to users.
Innovation Solution
A contactless charging system that acquires travel and usage information to set a target charge amount, controlling the charging process to prevent full charging, thereby minimizing battery degradation without compromising user convenience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If contactless charging charges the battery to full capacity by default, then the user convenience is improved (automatic charging without manual intervention), but the battery degradation accelerates due to unnecessary full charging
Solution Approach 1:
The system performs preliminary actions by acquiring travel information and usage patterns before charging, predicts the required charge amount in advance, and sets the target charge amount accordingly. This allows the system to charge only to the necessary level rather than always charging to full capacity, thereby reducing battery degradation while maintaining automatic charging convenience.
Solution Approach 2:
The system implements feedback mechanisms by continuously acquiring travel information, usage patterns, and charging history, then using this feedback to dynamically adjust and optimize the target charge amount. This closed-loop control enables the system to learn from past usage and improve charging accuracy over time, preventing both overcharging and undercharging.
2Reliability
If the system acquires and analyzes travel information and usage patterns to set precise target charge amounts, then battery degradation is reduced by avoiding unnecessary full charging, but the system complexity increases
Solution Approach 1:
The system performs self-service by automatically acquiring travel information, analyzing usage patterns, predicting charge requirements, and setting target charge amounts without requiring manual user input. The system serves itself by making intelligent charging decisions based on accumulated data, reducing the need for complex user interfaces or manual configuration while achieving precise charge control.
Solution Approach 2:
The system changes parameters dynamically by adjusting the target charge amount based on varying travel information, usage patterns, and charging conditions. Rather than using a fixed charging strategy, the system modifies charging parameters in real-time to match actual needs, enabling precise charge control without requiring overly complex system architecture.
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
The system effectively charges batteries to the required level based on usage patterns and conditions, preventing unnecessary full charges and thus reducing battery degradation while maintaining user convenience.
Implementation Method 1
charges a battery by non-contact power supply
Data Source
AI summary
A contactless charging system (1) sends electrical power to charge a battery (4) equipped to a vehicle (3). A contactless charging device (2) includes: a wireless communication device (16) which acquires travel information and use information; a target setting unit (15) which creates a charging plan including the target SOC of the battery (4), based on the information; and a charge control unit (14) which controls the sending of electrical power for battery charging based on the target SOC. The target setting unit (15) divides the average travel distance and average charge rate decrease amount into seven day of week divisions of whole day units, classifies each day of week division into the plurality of a long distance group and a short distance group based on the average travel distance, and creates a target SOC based on the average charge rate decrease amount included in each group.