Wireless Power Storage Cells for EV Charging
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Solution Overview
Problem
Existing wireless power transfer systems for electric vehicles require significant space and cost for the receiving facility and have limitations in power transfer efficiency.
Innovation Solution
A power storage apparatus comprising multiple storage cells connected in series or parallel, each equipped with a reception antenna and a charging control circuit, utilizing magnetic field resonance for efficient power transfer and storage, allowing for independent charging and reduced space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If a wireless power transfer system uses a traditional receiving facility with large antennas and power conversion equipment, then power transfer capability is achieved, but the required space and cost increase significantly
Solution Approach 1:
The receiving facility is segmented into multiple independent storage cells, each with its own small reception antenna and charging control circuit. This segmentation allows the system to achieve the required power transfer capability through parallel operation of multiple small units rather than relying on a single large facility, thereby reducing the space and cost of individual components while maintaining overall system performance.
Solution Approach 2:
The invention merges the functions of power reception, power conversion, and energy storage into integrated storage cells. Each storage cell combines a reception antenna, charging control circuit, and storage element (capacitor or battery) into a single modular unit. This integration eliminates the need for separate large-scale power conversion equipment and reduces the overall space requirement of the receiving facility.
2Power
If a wireless power transfer system uses a traditional receiving facility with large antennas and power conversion equipment, then power transfer capability is achieved, but the cost of the receiving facility increases
Solution Approach 1:
The receiving facility is divided into multiple identical, mass-producible storage cells. Each cell is a standardized module containing a reception antenna, charging control circuit, and storage element. This segmentation enables economies of scale in manufacturing, as each modular unit can be produced independently and assembled in large quantities, thereby reducing the overall cost of the receiving facility while maintaining power transfer capability.
Solution Approach 2:
Each storage cell is equipped with its own charging control circuit that autonomously manages power reception and storage without requiring complex external control systems. This self-service capability simplifies the overall system architecture, reduces the need for expensive centralized power conversion equipment, and lowers the total cost of the receiving facility.
3Ease of operation
If power is transferred wirelessly to a battery using electromagnetic induction or resonance, then cable-free power transmission is achieved, but power transfer efficiency is limited
Solution Approach 1:
The invention introduces storage elements (capacitors or batteries) as intermediary components in the wireless power transfer system. These storage elements receive power wirelessly through small reception antennas and store it locally, eliminating the need for high-power wireless transmission over long distances. This intermediary approach significantly improves power transfer efficiency by reducing energy loss during transmission while maintaining the convenience of wireless operation.
Solution Approach 2:
The system transitions from direct wireless power transmission to the storage dimension by incorporating energy storage elements. Power is transmitted wirelessly to storage cells that hold the energy, and then dispensed as needed. This dimensional shift from transmission-only to storage-capable architecture improves overall system efficiency by allowing power to be stored when transmission is efficient and used when needed, reducing total energy loss.
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 solution achieves reduced space and cost requirements for the receiving facility while enhancing power transfer efficiency and enabling rapid charging, with the ability to store power efficiently and prevent overcharging/over-discharging.
Implementation Method 1
utilizing magnetic field resonance for efficient power transfer and storage
Implementation Method 2
a storage element that stores a charge
Data Source
AI summary
A storage apparatus comprises a plurality of storage cells connected in series. Each storage cell comprises a storage element that stores a charge, a container that houses the storage element, a reception antenna capable of receiving power transmitted from a transmission antenna of a feeding facility provided in a wireless power transfer system, and a charging control circuit that charges the storage element using the power received by the reception antenna. The plurality of storage cells are charged concurrently and wirelessly, and therefore charging can be performed on all of the storage cells without overcharging or undercharging.