Power Supply Device Simultaneous Charging and Output
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Solution Overview
Problem
Conventional external power supply devices can only operate in either charging or discharging modes, making it inconvenient for users to switch between modes and leading to incorrect settings that can discharge the internal battery even when connected to an external power source, preventing simultaneous power application to multiple devices in series.
Innovation Solution
A power supply device with a controller that manages adapter power for charging and battery power for discharging, using transistors and diodes for switching and a microcontroller to determine voltage differences, allowing simultaneous power application to portable electronic devices and other power supply devices while charging the internal battery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a toggle switch is used to select charging or discharging mode, then mode selection is possible, but user convenience deteriorates due to manual switching and risk of incorrect settings
Solution Approach 1:
The power supply device automatically detects whether an adapter is connected and autonomously switches between charging mode and power supply mode without requiring user intervention. The controller monitors the connection state and automatically selects the appropriate operating mode, eliminating the need for manual toggle switch operation and preventing incorrect settings.
2Device complexity
If the power supply operates in only one mode at a time, then operational simplicity is maintained, but productivity deteriorates due to inability to charge and supply power simultaneously
Solution Approach 1:
The power supply device segments the power flow into two independent paths: one path directs adapter power to charge the internal battery, while the other path simultaneously supplies power to external electronic devices. The controller manages these separate power streams independently, enabling dual-function operation without increasing perceived device complexity for the user.
Solution Approach 2:
The power supply device achieves multi-functionality by simultaneously performing both charging and power supply operations. The single device can act as both a battery charger and a power source for external devices at the same time, eliminating the need for separate charging and power supply operations and significantly improving productivity.
3Adaptability or versatility
If external power supply devices are connected in series, then power distribution to multiple devices is possible, but reliability deteriorates due to incorrect power distribution when one device is charging
Solution Approach 1:
The controller continuously monitors the connection status of the adapter and automatically adjusts the power distribution mode accordingly. When the adapter is detected as connected, the controller enables simultaneous charging and power supply modes; when disconnected, it switches to battery-only power supply mode. This feedback mechanism ensures reliable power distribution in series connections by preventing incorrect modes that would disrupt the power chain.
Data Source
AI summary
A power supply device includes a battery, a charging part charging the battery, a power input to receive adapter power from an adapter supplied with external power or power output from a similarly configured power supply device, a power output part to output the adapter power, the power output of a similarly configured power supply device, or the battery power of the battery, and a controller to control the input power to apply power to the charging part and the power output part when the input power is supplied to the power input part, and to control the battery to apply power to the power output part when the input power is not supplied to the power input part. Thus, the power supply device is capable of applying power from an adapter to a portable electronic device while charging an internal battery with the adapter power.