Inductive Charger Dual-Loop Control for Stable Battery Charging
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Solution Overview
Problem
Inductive chargers face inefficiencies in regulating battery output voltage and current, leading to unstable charging processes and potential thermal regulation issues, as existing systems often rely on single-loop control mechanisms that can result in oscillations and reduced stability.
Innovation Solution
The implementation of a dual-loop control system, comprising a charge controller and two loop controllers that monitor input voltage and current, allowing for closed-loop regulation of battery load voltage and current, with a transmitter controller managing input voltage and current, and outer loop controllers generating feedback signals to adjust the charge controller, thereby ensuring efficient and stable charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single-loop control mechanism is used to regulate battery output voltage and current, then the device complexity is reduced, but the charging stability deteriorates due to oscillations and potential thermal regulation issues
Solution Approach 1:
The control system is segmented into two distinct loops: an inner loop that directly regulates battery output voltage and current, and an outer loop that monitors and adjusts the input voltage from the charging circuit. This segmentation allows each loop to specialize in specific regulation tasks, improving overall charging stability while maintaining manageable device complexity through modular architecture.
2Stability of the object's composition
If a dual-loop control system is implemented with multiple controllers monitoring voltage and current, then the charging stability is improved, but the device complexity increases
Solution Approach 1:
The dual-loop control system implements feedback mechanisms where the outer loop monitors input voltage and generates feedback signals to adjust the charge controller, while the inner loop continuously regulates battery output based on real-time voltage and current measurements. This feedback architecture enhances charging stability by automatically correcting deviations from target parameters, while the structured feedback paths prevent control chaos despite the increased number of controllers.
3Loss of energy
If a charge controller regulates battery output based on input voltage and current, then the energy transfer efficiency is improved, but the response time to adjust to varying conditions may be delayed due to multiple control loops
Solution Approach 1:
The outer loop performs preliminary action by monitoring input voltage conditions and generating adjustment signals before significant deviations occur. By proactively adjusting the charge controller based on input conditions, the system prevents energy loss from inefficient operation while the inner loop maintains rapid response to immediate battery charging needs, thus balancing energy efficiency with response time.
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 dual-loop control system enhances the efficiency and stability of inductive charging by precisely regulating battery voltage and current, mitigating thermal regulation issues and ensuring consistent power delivery, resulting in a more reliable and efficient charging process.
Implementation Method 1
Inductive chargers utilize an electromagnetic field to transfer energy. A charging station sends energy through inductive coupling to an electrical device
Implementation Method 2
The two induction coils in proximity combine to form an electrical transformer
Data Source
AI summary
A device includes a charge controller to regulate a battery output voltage based on an input voltage and an input current received from a charging circuit. A loop controller monitors the input voltage and the input current to generate a feedback signal to adjust the input voltage to the charge controller.