Vehicle Guidance Apparatus for Wireless Charging Alignment
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Solution Overview
Problem
Existing vehicle guidance systems for non-contact charging lack accuracy in guiding electric vehicles to optimize the relative position between the power receiving unit and the power supplying unit, leading to reduced charge efficiency due to misalignment.
Innovation Solution
A vehicle guidance apparatus comprising a power supplying parameter acquisition unit, a power receiving parameter storage unit, a charge efficiency calculation unit, and a display processing unit that acquires and calculates charge efficiency based on the relative position between the power supplying and receiving units, displaying a charge efficiency range to guide the electric vehicle for optimal alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple guide line display is used to guide vehicle positioning, then the device complexity is reduced, but the positioning precision and charge efficiency cannot be ensured
Solution Approach 1:
The system changes the display parameter from a simple guide line to a dynamic charge efficiency map that shows efficiency values across different positioning regions. This parameter change provides precise positioning information without requiring complex additional hardware, resolving the contradiction between simplicity and precision.
Solution Approach 2:
The charge efficiency map serves as an intermediary between the positioning system and the driver. Instead of directly controlling vehicle position, the map provides intermediate information about charge efficiency at different positions, enabling the driver to make informed positioning decisions.
2Ease of operation
If the vehicle positioning is not precisely controlled, then the ease of operation is improved, but the charge efficiency decreases due to misalignment between power receiving unit and power supplying unit
Solution Approach 1:
The system provides self-service guidance by displaying charge efficiency information directly in the driver's field of view through the windshield. The driver can independently determine the optimal positioning without external assistance, maintaining ease of operation while ensuring high charge efficiency.
Solution Approach 2:
The charge efficiency map provides real-time feedback about the relationship between vehicle position and charging performance. This feedback enables the driver to adjust positioning to achieve optimal charge efficiency without complex controls.
3Ease of operation
If the driver manually positions the vehicle without precise guidance, then the ease of operation is maintained, but the manufacturing precision of the charging alignment cannot be achieved
Solution Approach 1:
The system adds a visual information dimension by projecting the charge efficiency map onto the windshield. This dimensional addition provides precise alignment information without restricting the driver's manual positioning actions, resolving the contradiction between operational ease and alignment precision.
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 reduces driver mental stress and ensures accurate positioning for high charge efficiency by displaying a charge efficiency range, allowing the electric vehicle to align with the power supplying unit within a predetermined range for efficient non-contact charging.
Implementation Method 1
an electric vehicle that receives supply power by a power receiving unit in the vehicle in a non-contact manner, charges a power storage device mounted in the vehicle by the received power
Data Source
AI summary
A vehicle guidance apparatus includes a power supplying parameter acquisition device, a power receiving parameter storage device, a charge efficiency calculator, and a display processing device. The power supplying parameter acquisition device is configured to acquire in a electric vehicle a power supplying parameter which corresponds to a specification of a power supplier. The power receiving parameter storage device is configured to store a power receiving parameter corresponding to a specification of a power receiver. The charge efficiency calculator is configured to calculate a charge efficiency according to a relative position between the power supplier and the power receiver based on the power supplying parameter and the power receiving parameter. The display processing device is configured to display on a display a range of the charge efficiency with respect to a center of the power receiver to guide the electric vehicle.