Cascade Battery Charging Control Using Device Count Detection
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Solution Overview
Problem
Existing charging systems for multiple battery packs lack efficient voltage and current adjustment mechanisms based on the number of connected devices, leading to suboptimal charging performance and potential inefficiencies.
Innovation Solution
A charging system with an electrical energy conversion device that includes a controller to adjust output voltage and current based on the number of connected electrical energy receiving devices, utilizing a CAN communication protocol for device identification and control, and a wireless communication module for remote device interaction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple battery packs are charged using a charger with multiple battery interfaces, then the charging capacity increases, but the voltage and current adjustment efficiency deteriorates
Solution Approach 1:
The charging system is segmented into multiple independent battery interface modules, each capable of autonomous voltage and current adjustment. The controller divides the total charging current dynamically among interfaces based on battery pack requirements, enabling parallel charging with optimized parameter control for each interface.
Solution Approach 2:
The charging system implements dynamic voltage and current adjustment through the controller, which continuously monitors battery pack states and modifies output parameters in real-time. This dynamic control allows the system to adapt to varying charging needs of multiple battery packs, maintaining high efficiency across different charging scenarios.
2Productivity
If the output voltage and current are adjusted based on the number of connected devices, then the charging performance is optimized, but the control complexity increases
Solution Approach 1:
The controller implements feedback control by continuously monitoring the number of connected battery packs, their charging states, and the actual output parameters. Based on this feedback, the controller automatically adjusts voltage and current settings to optimize charging performance while maintaining manageable control complexity through rule-based decision algorithms.
Solution Approach 2:
Each battery interface module is equipped with autonomous capability to detect connected battery packs and initiate appropriate charging parameters. The system performs self-configuration when devices are connected, reducing the burden on central control and simplifying the overall control architecture while maintaining optimized charging performance.
3Reliability
If a CAN communication protocol is used for device identification and control, then the system reliability is enhanced, but the device complexity increases
Solution Approach 1:
The CAN communication protocol serves multiple functions within the charging system: device identification, parameter configuration, status monitoring, and control commands. This multi-functional communication approach enhances system reliability through standardized protocols while avoiding the need for separate communication mechanisms for each function, thereby limiting the increase in device complexity.
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 optimizes charging by adjusting output parameters based on device connectivity, ensuring efficient and controlled charging of battery packs, enhancing flexibility and reliability.
Implementation Method 1
a conversion circuit electrically connected to the power interface and the connecting port separately
Data Source
AI summary
A charging system includes an electrical energy conversion device and multiple electrical energy receiving devices connected in cascade. The charging system charges battery packs electrically connected to the multiple electrical energy receiving devices. The electrical energy conversion device includes a controller; a power interface for connecting an external power supply; a connecting port for connecting one of the multiple electrical energy receiving devices; and a conversion circuit electrically connected to the power interface and the connecting port separately. Each of the multiple electrical energy receiving devices includes an electrical energy input port for connecting the electrical energy conversion device or another of the multiple electrical energy receiving devices; and an electrical energy output port for connecting another of the multiple electrical energy receiving devices. The controller is configured to adjust an output of the connecting port based on the number of the multiple electrical energy receiving devices.