Inductive Vehicle Charging via Series-Connected PR Modules

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Solution Overview

Problem

Inductive charging technology faces challenges in raising the output voltage at the power receiving end due to voltage reduction during rectification, filtration, and stabilization processes, and the high cost and difficulty of using high-voltage resistant components.

Innovation Solution

The method employs frequency converter power sourcing modules with shunts and bleeder circuits to increase the total voltage for charging vehicles wirelessly, eliminating the need for high-voltage resistant components and allowing for voltage comparison and adjustment to prevent unstable charging conditions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional inductive charging technology is used with rectification, filter and voltage stabilization procedures, then power can be transmitted wirelessly, but the output voltage is reduced and high-voltage resistant components are required which are expensive and difficult to manufacture

Engineering Contradiction:

Improvewireless power transmissionVSAvoidmanufacturing difficulty and cost of high-voltage components

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The patent inverts the conventional approach by using series connection of PR modules to increase voltage at the output end, rather than trying to maintain high voltage through the rectification and stabilization process. This reversal allows voltage boosting after power reception without requiring expensive high-voltage resistant components throughout the system.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent divides the power receiving system into multiple PR modules connected in series. Each module operates at standard voltage levels, but their series connection accumulates voltage to achieve the required output voltage, avoiding the need for high-voltage components in each individual module.

Inventive Principle:

Principle #1Segmentation

2Power

If high voltage is provided on the PR coil to raise output voltage, then voltage requirements can be met, but high-voltage driving components are required at the PS end which are expensive and difficult to manufacture

Engineering Contradiction:

Improveoutput voltageVSAvoidmanufacturing difficulty and cost of high-voltage driving components

Core Design Contradiction:

PowerVSEase of manufacture

Solution Approach 1:

Instead of boosting voltage at the power sourcing end with high-voltage driving components, the patent inverts the approach by transmitting power at standard voltage and then boosting voltage through series connection of PR modules at the power receiving end.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The series-connected PR modules act as an intermediary voltage multiplication mechanism between the standard voltage power transmission and the high voltage output requirement, eliminating the need for high-voltage driving components at the PS end.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Use of energy by moving object

If wired connections are used for charging, then power can be transmitted, but electricity leakage and theft can occur through wet sockets and illegal connections

Engineering Contradiction:

Improvepower transmissionVSAvoidelectricity leakage and theft

Core Design Contradiction:

Use of energy by moving objectVSObject-affected harmful factors

Solution Approach 1:

The patent replaces the mechanical wired connection system with an inductive wireless power transmission system using electromagnetic fields, eliminating physical contact points that could be subjected to water intrusion or illegal tampering.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

Electromagnetic fields serve as an intermediary medium for power transmission between the PS and PR devices, replacing direct electrical contact and thereby eliminating the harmful effects associated with exposed electrical connections.

Inventive Principle:

Principle #24Intermediary (Mediator)

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

This approach enables stable and safe charging by adjusting power output to preset levels, preventing electricity leakage and theft, and reducing costs through wireless power transmission and data-driven user identification.

Implementation Method 1

systems that transmit power inductively rely on DC power input to driving coils at the PS end to transmit electric energy to PR coils through AC electromagnetic waves

Methodology Applied

Scientific EffectElectromagnetic induction: Electromagnetic Induction

Data Source

PatentUS9045050B2Inductive charging method for vehicles

Publication Date: 2015.06.02 FU TONG TECH

AI summary

An inductive charging system for vehicles includes a power receiving (PR) device disposed in a vehicle, and a power sourcing (PS) device disposed in a charging equipment separated from the vehicle.