Battery Charger with Selectable Quick and Normal Charging Modes
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Solution Overview
Problem
Current charging systems for lithium-ion batteries in power tools lack the ability to selectively charge to a specific capacity quickly, often requiring a fully charged battery when only a fraction of the capacity is needed, leading to inefficiency and high design costs.
Innovation Solution
A charger with selectable quick-charging and normal-charging modes, utilizing a control circuit with temperature and voltage detection to automatically switch between modes, allowing for high current charging in quick mode to reach a predetermined capacity within a short time, and manual selection via an operation panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If quick-charging mode is implemented with high charging current, then charging speed is improved, but battery safety and reliability deteriorate due to temperature and voltage risks
Solution Approach 1:
The patent implements real-time feedback mechanisms through temperature-detecting circuits and voltage-detecting circuits that continuously monitor battery parameters during charging. The control circuit receives these feedback signals and automatically adjusts charging current or switches from quick-charging mode to normal-charging mode when safety thresholds are approached, thus maintaining both high charging speed and battery safety
Solution Approach 2:
The charging system dynamically switches between quick-charging mode and normal-charging mode based on real-time battery conditions. The control circuit can transition from high-current quick-charging to standard-current normal-charging when temperature or voltage parameters indicate potential safety risks, allowing the system to adapt charging intensity to current battery state while prioritizing safety
2Quantity of substance
If charging system is designed to charge battery to 100% capacity, then full battery capacity is achieved, but charging time increases and productivity decreases
Solution Approach 1:
The patent applies partial action by implementing a quick-charging mode that charges the battery to a predetermined capacity threshold (e.g., 80% or 90%) rather than completing full charging to 100%. This allows users to obtain sufficient battery capacity for immediate needs within a short time frame, significantly improving charging efficiency and productivity while eliminating the need to wait for complete charging
Solution Approach 2:
The charging process is segmented into two distinct modes: quick-charging mode for rapid charging to a predetermined capacity threshold, and normal-charging mode for completing the remaining charge. This segmentation allows users to select appropriate charging strategies based on whether they need immediate partial charge or complete charging, optimizing productivity for urgent tasks while maintaining option for full charging when time permits
3Adaptability or versatility
If multiple charging modes are added to the charger, then adaptability and versatility are improved, but device complexity increases
Solution Approach 1:
The control circuit is designed with multi-functionality to handle both quick-charging mode and normal-charging mode operations. The same control circuit integrates temperature detection, voltage detection, mode switching logic, and indicator control, eliminating the need for separate dedicated circuits for each function. This universal design achieves multiple charging modes while minimizing the increase in device complexity
4Reliability
If temperature and voltage detection circuits are implemented, then battery safety is improved, but manufacturing cost increases
Solution Approach 1:
The temperature-detecting circuit and voltage-detecting circuit are merged into a single integrated control circuit system. Both detection functions share common signal processing pathways and control logic within the same control circuit, reducing the need for separate independent circuits. This merging approach improves battery safety through comprehensive monitoring while minimizing manufacturing cost by reducing component count and assembly complexity
Data Source
AI summary
The present application provides a charging system having a charger and a battery. The charging system provides a quick-charging mode and a normal-charging mode. The quick-charging mode may be activated to charge the battery if certain conditions are met and the charging system may also have an indicating device for indicating when the quick-charging mode is finished. More specifically, the charger of the present application provides selective charging modes and provides an ultra-quick charging solution which may be controlled by the changes in the temperature of the battery and which can increase the charging power to quickly provide enough energy to finish a work task.