Electronic Cigarette Power Supply with Dynamic Battery Switching
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Solution Overview
Problem
Conventional power supply structures for electronic cigarettes lack adaptability, requiring replacement when the number of rechargeable batteries connected in series changes, limiting their usability.
Innovation Solution
A power supply structure with a switching circuit and charging circuit that detects the number of batteries in series, using boosting or buck modules to adjust charging voltage accordingly, allowing the same circuit to charge one or multiple batteries effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different numbers of rechargeable batteries are connected in series to achieve different power supply voltages, then the adaptability to different power supply voltages is improved, but the device complexity increases because multiple power supply structures are needed
Solution Approach 1:
The charging circuit is designed to perform multiple functions by detecting the number of batteries connected in series and automatically adjusting the charging voltage accordingly. The same charging circuit can charge 1, 2, or 3 batteries in series by switching between different charging voltage modes (5V for 1 battery, 10V for 2 batteries, 15V for 3 batteries), eliminating the need for multiple dedicated charging circuits for each battery configuration.
Solution Approach 2:
The power supply structure employs dynamic switching capability where the charging circuit can automatically detect the battery configuration and switch between different charging voltage outputs. This dynamic adaptation allows the system to adjust its charging parameters in real-time based on the detected number of batteries, providing versatility without requiring multiple static power supply structures.
2Adaptability or versatility
If the number of batteries is increased or decreased during charging, then the flexibility of power supply configuration is improved, but the ease of operation deteriorates because the power supply structure must be replaced
Solution Approach 1:
The charging circuit incorporates automatic detection and self-adjustment capabilities. When batteries are connected or disconnected, the charging circuit automatically detects the change in battery configuration through voltage detection and switches to the appropriate charging mode without requiring user intervention or manual reconfiguration. This self-service feature maintains ease of operation while providing flexible battery configuration options.
3Device complexity
If a single charging circuit is used for multiple battery configurations, then the device complexity is reduced, but the measurement precision deteriorates because voltage detection accuracy is required
Solution Approach 1:
The charging circuit incorporates a feedback mechanism where the detected battery voltage is fed back to the control unit. Based on this feedback information, the control unit determines the number of batteries connected in series and automatically adjusts the charging voltage to the appropriate level. This feedback loop ensures accurate voltage detection and precise charging voltage adjustment, maintaining measurement precision while using a single charging circuit.
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
Enables seamless switching between charging single or multiple batteries, enhancing adaptability and ensuring safe and efficient charging without the need for multiple power supply structures.
Implementation Method 1
the voltage sampling module is connected between the controller and the battery series circuits and configured for detecting the voltages of the battery series circuits and feeding back to the controller
Implementation Method 2
the charging circuit is configured for converting a standard charging voltage to different charging voltages so as to be supplied to the battery series circuits for charging
Implementation Method 3
the charging interface is respectively connected to the battery series circuits through a boosting module and a buck module
Data Source
AI summary
A power supply structure and an electronic cigarette having same are provided. The power supply structure includes at least two rechargeable batteries connected in series, a charging circuit connected to the rechargeable batteries and used to charge the rechargeable batteries, and a switching circuit connected to the at least two rechargeable batteries. The switching circuit is used to switch the at least two rechargeable batteries into battery series circuits having different number of rechargeable batteries connected in series. The charging circuit is used to detect the voltages of the battery series circuits and convert a standard charging voltage into different charging voltages for charging the battery series circuits according to the detected voltages.