Contactless Power Transmission Control Device for Host Data Exchange
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Solution Overview
Problem
Current contactless power transmission systems are limited in their ability to facilitate data communication between power transmission and receiving devices, lacking a method for effective data exchange during charging, which restricts their application beyond basic ID authentication.
Innovation Solution
A power transmission control device that includes a controller and a host interface, allowing for a communication mode to be initiated between the power transmission-side host and the power receiving-side host through a register section, enabling data communication by shifting transmission and communication conditions for data exchange during contactless power transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If contactless power transmission is implemented using electromagnetic coupling between primary and secondary coils, then power can be transmitted without contact between metal portions, but data communication between power transmission-side host and power receiving-side host cannot be effectively executed during charging
Solution Approach 1:
The contactless power transmission system is enhanced to perform multiple functions: both power transmission and data communication. The system uses the existing electromagnetic coupling between primary and secondary coils for power transmission, while simultaneously enabling data exchange between hosts during the charging process, thereby making the system universal and multi-functional without requiring separate contactless data communication hardware
Solution Approach 2:
The patent merges power transmission and data communication functions into a single integrated system. By utilizing the charging time and electromagnetic coupling already established for power transmission, the system combines both power delivery and data exchange operations, eliminating the need for separate communication channels and reducing overall system complexity
2Reliability
If authentication code transmission is executed between power transmission side device and power receiving side device, then ID authentication can be achieved to detect insertion of foreign object, but data communication at application level higher than authentication cannot be achieved
Solution Approach 1:
The system performs authentication and foreign object detection as preliminary actions during the charging process. Once authentication is complete and the charging connection is established, the system then enables application-level data communication between hosts, utilizing the already-established electromagnetic coupling and power transmission channel for subsequent data exchange operations
3Ease of operation
If charging time is utilized for data exchange, then user convenience is improved, but communication conditions must be shifted from normal power transmission conditions
Solution Approach 1:
The system dynamically switches communication modes based on operational requirements. During normal power transmission, the system operates in power optimization mode, and during charging time, it transitions to communication mode to enable data exchange between hosts. This dynamic adaptation allows the system to optimize performance for different operational phases while maintaining ease of use
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
Enables reliable and efficient data communication between hosts during contactless power transmission, enhancing the functionality of electronic devices by utilizing charging time for data exchange, thus improving user convenience and compatibility.
Implementation Method 1
transmits power from the power transmission device to a power receiving device by electromagnetically coupling a primary coil to a secondary coil
Data Source
AI summary
There is provided a power transmission control device included in a power transmission device in a contactless power transmission system that transmits power from the power transmission device to a power receiving device by electromagnetically coupling a primary coil to a secondary coil to supply the power to a load of the power receiving device. The power transmission control device includes a controller controlling the power transmission control device, a host interface communicating with a power transmission-side host, and a register section accessible from the power transmission-side host via the host interface. The controller shifts into a communication mode that executes communication between the power transmission-side host and a power receiving-side host, when the power transmission-side host writes, via the host interface, a communication request command that requests the communication between the hosts in the register section. Then, the controller transmits the communication request command to the power receiving device.