Onboard Charging System Merging Inductive and Conductive Circuits
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Solution Overview
Problem
Existing charging systems for energy storage systems in mobile applications face challenges in convenience and compatibility, particularly with complex systems, where onboard systems require efficient and effective charging solutions that can handle both conductive and inductive charging methods.
Innovation Solution
The proposed solution involves an onboard charging system with a coupling device, charging circuit, converter, and rectifier that can handle both conductive and inductive charging, including the use of an inductive receiver for wireless charging, and converters for voltage and current control, enabling charging from AC to DC power sources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an onboard charging system is used, then charging convenience is improved, but system complexity increases
Solution Approach 1:
The patent combines both inductive and conductive charging circuits into a single onboard charging system. The inductive charging circuit includes a receiver coil and rectifier, while the conductive charging circuit includes a connector and rectifier. Both circuits converge to charge the same energy storage system, allowing the vehicle to utilize multiple charging methods without requiring separate complete charging systems, thus improving convenience while managing complexity.
Solution Approach 2:
The onboard charging system is designed to support multiple charging modes (inductive and conductive) using a unified architecture. The system can accept power from different sources (inductive transmitter or AC outlet) and process it through appropriate circuits to charge the energy storage system, making the charging system versatile and adaptable to different charging scenarios.
2Adaptability or versatility
If both inductive and conductive charging circuits are included, then charging versatility is improved, but device complexity increases
Solution Approach 1:
The patent merges inductive and conductive charging circuits into a single integrated system. Both charging methods share common components including the energy storage system, control unit, and charging management architecture. The inductive charging circuit and conductive charging circuit are designed to converge at the battery charging interface, reducing overall system complexity while maintaining support for both charging methods.
Solution Approach 2:
The charging system is segmented into distinct functional modules: an inductive charging subsystem (receiver coil, rectifier), a conductive charging subsystem (connector, rectifier), and a common power management subsystem. This modular segmentation allows each charging method to be independently designed and maintained while sharing common resources, thereby managing complexity through organized separation of functions.
3Productivity
If voltage and current control is implemented, then charging efficiency is improved, but control complexity increases
Solution Approach 1:
The control unit receives feedback signals from the charging circuits and energy storage system to monitor charging status, voltage levels, and current flow. Based on this feedback, the control unit dynamically adjusts the charging parameters to optimize charging efficiency and protect the battery. This closed-loop control ensures efficient charging while managing complexity through intelligent automation rather than overly complex hardware.
Solution Approach 2:
The system dynamically changes electrical parameters (voltage and current) during the charging process based on battery state of charge and requirements. The control unit adjusts these parameters in real-time to optimize charging efficiency, transitioning between different charging stages and rates as needed, thereby improving productivity through adaptive parameter control.
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 solution provides flexible and efficient charging capabilities, allowing for convenient and effective charging of energy storage systems in vehicles, enhancing power density and control while supporting both wired and wireless charging methods.
Implementation Method 1
An inductive receiver may be provided onboard the vehicle. The inductive receiver may be configured to couple with a source transmitter across an air gap
Implementation Method 2
A rectifier may be electrically connected in the charging circuit with the connector, the rectifier converting AC to DC
Data Source
AI summary
An onboard charging system for charging from a power source may include an energy storage system. A connector may be configured to couple the onboard charging system with the power source. A charging circuit may be electrically connected between the connector and the energy storage system. A converter may be electrically connected in the charging circuit between the connector and the energy storage system. A rectifier may be electrically connected in the charging circuit between the connector and the converter. Output of an inductive receiver may be electrically connected with the charging circuit between the connector and the converter. The converter may control the delivery of voltage and current to the energy storage system from the power source and from the inductive receiver.