Non-contact Charging Controller Abnormality Detection
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Solution Overview
Problem
In non-contact charging systems, abnormal state conditions detected on the power receiving side can lead to continuous charging stoppages due to incorrect linking of voltage variations with battery abnormalities, and existing systems lack efficient mechanisms to differentiate between temporary and permanent abnormalities, especially in environments with vibrations like vehicles.
Innovation Solution
A non-contact charging system with a controller that temporarily stops charging upon detecting abnormalities and restarts after a predetermined time, allowing for proper charging continuation and avoiding unnecessary stoppages, with separate times for full charge and vibration-related stoppages, and the ability to detect and adjust coil positions for accurate recharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the controller stops charging immediately upon detecting an abnormality signal, then charging safety is improved, but charging continuity deteriorates due to false stoppages from temporary abnormalities like vibrations
Solution Approach 1:
The controller performs preliminary verification by detecting whether abnormality conditions persist before executing the charging stop action. This preliminary check distinguishes between temporary abnormalities (e.g., vibrations) and permanent abnormalities, preventing false stoppages while maintaining safety for genuine issues.
Solution Approach 2:
The controller continuously monitors abnormality detection results and uses this feedback to determine whether to stop or continue charging. By checking if the abnormality condition remains after initial detection, the system adapts its charging state based on real-time feedback, avoiding premature stops due to transient conditions.
2Ease of operation
If the controller restarts charging automatically after a predetermined time, then user convenience is improved, but energy waste increases due to unnecessary restarts after permanent abnormalities
Solution Approach 1:
Before automatically restarting charging, the controller performs a preliminary check to verify that the abnormality condition has been resolved. This preliminary verification ensures that restarts only occur when appropriate, preventing energy waste from restarting after permanent abnormalities while maintaining user convenience through automatic recovery from temporary issues.
Solution Approach 2:
The controller uses feedback from abnormality detection to control the restart decision. By continuously monitoring whether the abnormality condition persists, the system determines whether to proceed with automatic restart or maintain charging stop, optimizing the balance between user convenience and energy efficiency.
3Adaptability or versatility
If the system uses standardized reason codes for abnormality detection, then device compatibility is improved, but measurement precision deteriorates due to inability to distinguish specific abnormality causes
Solution Approach 1:
The abnormality detection function is segmented into multiple independent detection items (e.g., voltage variation, temperature, current abnormalities). Each item can be detected and reported separately using standardized reason codes, allowing precise identification of specific abnormality causes while maintaining compatibility through standard code structures.
Solution Approach 2:
Different detection positions or aspects of the charging system are assigned different detection capabilities. The system can detect various types of abnormalities (voltage, temperature, current) at different locations with specialized sensors, providing precise local measurement while reporting through unified standardized codes for broad compatibility.
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 prevents continuous charging stoppages by distinguishing between temporary and permanent abnormalities, ensuring continuous operation and proper recharging, even in vibrating environments, while improving user convenience by automatic restarts without user intervention.
Implementation Method 1
a non-contact charger (e.g., a non-contact charger 12 in the embodiment) including a primary coil (e.g., a primary coil 32 in the embodiment) that performs charging of the power receiving device through the secondary coil in a non-contact manner
Data Source
AI summary
A non-contact charging system includes a power receiving device including a secondary coil, and a non-contact charger including a primary coil and a controller. The primary coil performs charging of the power receiving device through the secondary coil in a non-contact manner. Upon receiving a signal representing an abnormality of the power receiving device or detecting an abnormality of the charging in the non-contact charger, the controller stops the charging temporarily and executes procedures for restarting the charging when a first predetermined time has lapsed from the reception of the signal representing the abnormality or the detection of the abnormality of the charging.