Multi-Mode Battery Charging Circuit for Fast Charging Heat Control
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Solution Overview
Problem
Existing devices to be charged, such as smartphones, require multiple charging schemes to increase scalability and adaptability, as they often need to be charged frequently and current charging methods are inefficient, taking several hours and generating excessive heat.
Innovation Solution
A device with a charging interface, battery unit, and control module that identifies the type of power supply device and switches between charging modes using different charging circuits to accommodate various charging schemes, including normal and fast charging, thereby optimizing charging speed and reducing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If high-current charging schemes are used to reduce charging time, then charging speed is improved, but heat generation increases and device scalability decreases
Solution Approach 1:
The battery system is segmented into multiple battery cells (first battery cell, second battery cell, third battery cell) that can be connected in series or parallel configurations. This segmentation allows the charging current to be distributed across multiple cells, reducing heat generation per cell while maintaining overall charging speed. The control module manages different connection modes to optimize charging performance and thermal management.
2Adaptability or versatility
If multiple charging schemes are implemented to improve adaptability, then compatibility with different power supplies is improved, but device complexity increases
Solution Approach 1:
The charging circuit is designed with multi-functionality to support various charging schemes including normal charging, fast charging, and super fast charging. The control module identifies the power supply type and automatically selects the appropriate charging mode, making the device universally compatible with different power supplies without requiring separate dedicated circuits for each charging type. The battery cells can be reconfigured in different connection modes to adapt to various charging requirements.
3Device complexity
If single-cell battery architecture is used to simplify device structure, then device complexity is reduced, but charging current capability is limited
Solution Approach 1:
The battery system employs dynamic reconfiguration of battery cell connections based on charging requirements. The control module can switch between series connection mode (for higher voltage and lower current) and parallel connection mode (for lower voltage and higher current) depending on the power supply type and charging stage. This dynamic adaptability allows the system to maintain simple battery structure while achieving high charging current capability when needed.
Data Source
AI summary
Provided are a to-be-charged device and a charging method. The method includes: identifying a type of a power supply device connected to the to-be-charged device through a charging interface of the to-be-charged device; in response to the type being a first type, controlling the battery unit to be charged in a first charging mode through the first charging circuit; and in response to the type being a second type, controlling the battery unit to be charged in a second charging mode through the first charging circuit; wherein a maximum output power of the power supply device of the first type is greater than a maximum output power of the power supply device of the second type; a maximum charging current of the battery unit in the first charging mode is greater than a maximum charging current of the battery unit in the second charging mode.