Wireless Power Transfer Lane Speed Control for Battery Charging
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Solution Overview
Problem
Wireless power transfer methods using power transfer lanes are limited in length, making it difficult for vehicles to secure sufficient battery charging, which can lead to reduced operating ratios and the need for larger batteries.
Innovation Solution
A wireless power transfer system with power transmission apparatuses and power reception apparatuses that include power-transfer path segments and non-power transfer path segments, utilizing power transfer management units to control travel speed and power reception based on battery capacity and available power, ensuring efficient charging without stopping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If wireless power transfer is performed on a limited-length power transfer lane, then power can be transmitted to the vehicle during travel, but the vehicle cannot secure sufficient battery charging amount
Solution Approach 1:
The system dynamically adjusts the vehicle's traveling speed on power transfer path segments based on real-time battery state of charge and power reception characteristics. By controlling the vehicle to travel at optimized speeds (which may include stopping temporarily on the lane), the system maximizes power reception efficiency and ensures sufficient charging amount is secured within the limited power transfer lane length
Solution Approach 2:
The system changes the operating parameters of power reception by adjusting the vehicle's speed and停留 time on the power transfer lane based on battery state of charge. This parameter optimization allows the vehicle to receive the required charging amount within the constrained physical length of the power transfer infrastructure
2Use of energy by moving object
If the vehicle stops to charge the battery, then sufficient charging amount can be secured, but the operating ratio of the vehicle decreases
Solution Approach 1:
The system performs preliminary power reception actions by having the vehicle stop temporarily on the power transfer lane to charge the battery before the vehicle's battery is fully depleted. This proactive charging approach prevents work interruptions later, ensuring the vehicle can maintain its operating schedule and productivity without unexpected stoppages
Solution Approach 2:
The system enables continuous operation by integrating power reception into the vehicle's travel routine. Instead of separate charging stops that interrupt work, the vehicle performs power reception during designated travel segments on the power transfer lane, maintaining the continuity of useful action between charging and working phases
3Use of energy by moving object
If the power transfer lane length is increased to secure sufficient charging, then charging amount improves, but system complexity and cost increase
Solution Approach 1:
Rather than extending the physical length of power transfer lanes, the system achieves sufficient charging by dynamically controlling the vehicle's speed and停留 time on existing lanes. This operational optimization allows the same infrastructure to deliver increased charging capacity without physical expansion
Solution Approach 2:
The system optimizes charging efficiency by adjusting operational parameters (speed,停留 time) based on battery state of charge and power reception characteristics, maximizing the charging output from the existing power transfer lane length without requiring infrastructure expansion
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
Prevents vehicle stoppages due to battery shortages by dynamically adjusting travel speed and power reception to match battery needs, maintaining operational efficiency.
Implementation Method 1
a power transmission apparatus configured to perform power transmission... at least one power transmission coil provided on each of the one or more power-transfer path segments, and a power supply unit configured to output, to the at least one mobile object through the at least one power transmission coil, the suppliable power output
Implementation Method 2
The at least one mobile object includes a power reception unit configured to perform reception of the power transmitted from the power transmission apparatus
Data Source
AI summary
In a wireless power transfer system, a power-transfer management unit includes a first controller that generates power transfer information. The power transfer information includes a first traveling speed for a predetermined route that includes (i) at least one selected power-transfer path segment or (ii) a combination of at least one selected non-power transfer path segment and the at least one selected power-transfer path segment. A mobile object, which travels at a second traveling speed on the at least one non-power transfer path segment, is controlled to travel at a first traveling speed on the at least one power-transfer path segment. The first controller calculates, as the first traveling speed, a third traveling speed required to charge a battery of the mobile object traveling on the route, and transmits the third traveling speed to the mobile object.