Power Supply Device with Booster Circuit for Seamless Battery Exchange
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electronic devices face interruptions during battery pack exchange, especially when using a small-sized backup battery, as they risk data loss due to power disruptions during the process.
Innovation Solution
A power supply device with a first battery, a second battery, a booster circuit, a dummy load circuit, and a power controller that allows seamless switching from the main battery to the backup battery, ensuring continuous operation by activating the booster circuit and supplying power to a dummy load circuit when the main battery is detachable, thus minimizing voltage drops during the switch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a small-sized backup battery is used, then the device size is reduced, but the power supply stability during battery exchange deteriorates
Solution Approach 1:
A dummy load circuit is introduced as an intermediary component between the backup battery and the main battery. When the main battery is detached, the dummy load circuit temporarily consumes power from the backup battery, preventing voltage spikes and stabilizing the power supply. This mediator allows the system to handle the transition smoothly even with a small backup battery capacity.
Solution Approach 2:
The system performs preliminary detection of main battery detachment status and activates the dummy load circuit before the actual battery exchange occurs. By detecting the detachment state in advance and pre-activating the stabilization mechanism, the system ensures power stability is maintained during the critical transition period when the backup battery takes over.
2Weight of moving object
If the backup battery capacity is reduced, then the device portability is improved, but the ability to maintain continuous operation during battery exchange deteriorates
Solution Approach 1:
The dummy load circuit serves as a power buffer that mediates between the small backup battery and the device's power requirements. It temporarily absorbs excess power during transitions and provides supplemental power during the exchange process, enabling continuous operation even with limited backup battery capacity.
Solution Approach 2:
The system dynamically changes power supply parameters by activating the dummy load circuit only during battery exchange transitions. This temporary parameter change allows the small backup battery to effectively support continuous operation during critical periods without requiring increased battery capacity for normal operation.
3Device complexity
If a simple backup battery system is used, then the device complexity is reduced, but the capability to prevent data loss during battery exchange deteriorates
Solution Approach 1:
The dummy load circuit acts as a simple yet effective intermediary that prevents power instability during battery exchange. By providing a controlled power discharge path, it eliminates voltage fluctuations that could cause data loss, achieving data protection without adding complex control systems.
Solution Approach 2:
The dummy load circuit is designed to automatically activate when battery exchange is detected and self-regulate power consumption. This self-service mechanism provides data loss prevention through passive power stabilization without requiring complex active control or user intervention, maintaining system simplicity while ensuring data safety.
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 uninterrupted battery pack exchange in electronic devices, even with small-sized backup batteries, by stabilizing the power supply and preventing data loss during the transition from the main battery to the backup battery.
Implementation Method 1
a booster circuit that increases an output voltage of the second battery
Data Source
AI summary
An electronic device allows a user to exchange a main battery in a state where an electronic device is continuously operated, even when a backup battery is a small-sized battery charger. The power supply device supplies power for driving an electronic device, and includes a first battery used as a driving power supply, a second battery used as the driving power supply when the first battery is unusable, a booster circuit that increases an output voltage of the second battery, a dummy load circuit for the booster circuit, a battery detachment detector that detects whether the first battery is detachable from the device, and a power controller that switches the driving power supply of the device to the first or second battery. The power controller activates the booster circuit and supplies output power of the booster circuit to the dummy load circuit, when the first battery is detachable.