LED Stroboscope Synchronized with Camera Using Lithium-Ion Battery
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Solution Overview
Problem
Conventional strobe devices face issues such as increased volume, recharging time, luminance saturation, and stability problems due to the use of electrolytic capacitors, which can lead to overcharging and potential explosions or leakage, especially when used for continuous photography in low-light environments.
Innovation Solution
An LED stroboscope device synchronized with a camera that employs a high-discharge lithium-ion battery for the stroboscope unit, along with a current maintaining module to regulate sudden current changes and a reverse voltage prevention module to prevent backflow, allowing for continuous high-output photography without recharging and reducing the risk of overcharging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If an electrolytic capacitor is used as a strobe capacitor, then the strobe can store high voltage charge, but the volume increases by more than 20 times and recharging time is required after discharging
Solution Approach 1:
The patent changes the fundamental parameter of the energy storage medium from electrolytic capacitor to lithium-ion battery, which has different electrochemical properties. This parameter change enables the same energy storage function with dramatically reduced volume (more than 20 times smaller) and eliminates recharging time, as the lithium-ion battery can instantly discharge high current without needing to recharge between flashes
2Use of energy by moving object
If an electrolytic capacitor is used as a strobe capacitor, then the strobe can store high voltage charge, but charging time is required after discharging and continuous photographing with maximum output is impossible
Solution Approach 1:
The patent changes the energy storage medium from electrolytic capacitor to lithium-ion battery, which has superior instantaneous discharge capability and no recharging time requirement. This enables continuous maximum-output photography as the lithium-ion battery can sustain high current discharge indefinitely without cooling or recharging intervals
Solution Approach 2:
The lithium-ion battery enables continuous useful action by eliminating the interruption period between discharges. Unlike capacitors that must recharge after discharge, the lithium-ion battery can continuously supply high current without interruption, allowing unlimited continuous shooting at maximum output
3Measurement precision
If the charging voltage detection has an error or the charging limit voltage setting is incorrect, then the capacitor may be overcharged, but this can lead to luminance saturation or even explosion and leakage
Solution Approach 1:
The patent replaces the conventional capacitor-based energy storage with a lithium-ion battery that has inherently different charging characteristics and higher safety margins. The lithium-ion battery chemistry provides built-in protection against overcharging and can tolerate voltage detection errors without risking explosion or leakage, making the system more reliable even with imperfect voltage detection
Solution Approach 2:
The patent changes the energy storage medium to lithium-ion battery, which operates at different voltage levels and has different charge-discharge characteristics compared to electrolytic capacitors. This parameter change fundamentally alters the safety profile, as lithium-ion batteries are less prone to catastrophic failure from overcharging and can handle voltage variations more gracefully
4Use of energy by moving object
If an electrolytic capacitor is used as a strobe capacitor, then the strobe can store high voltage charge, but heat is generated due to large internal resistance value
Solution Approach 1:
The patent changes the energy storage medium from electrolytic capacitor to lithium-ion battery, which has fundamentally different electrical resistance characteristics. Lithium-ion batteries have much lower internal resistance during discharge, resulting in significantly reduced heat generation (I²R losses) compared to capacitors with large equivalent series resistance, enabling sustained high-power operation without thermal management issues
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
The LED stroboscope device achieves a significant reduction in volume, eliminates recharging time, enables over 20,000 flashes per charge, and ensures continuous high-output photography while preventing voltage backflow and sudden current changes, thereby enhancing stability and performance.
Implementation Method 1
the power charging module includes a high-discharge lithium-ion battery
Implementation Method 2
provided with a current maintaining module in a stroboscope unit to induce a voltage in proportion to the amount of change in current, thereby suppressing a sudden change in current
Data Source
AI summary
An LED stroboscope device synchronized with a camera, which comprises: a power supply unit; a stroboscope unit which receives power from the power supply unit so as to charge the power for generating a flashing light, and then, outputs a flashing light generation signal for electric discharge of the charged power; a continuous light unit which receives the power from the power supply unit so as to output a continuous light generation signal for generating continuous light; a light emitting unit which individually receives the flashing light generation signal and the continuous light generation signal so as to generate the flashing light and the continuous light; and a control unit which receives the power from the power supply unit so as to individually control the stroboscope unit and the continuous light unit, thereby outputting the flashing light generation signal and the continuous light generation signal.