Solar Cell Light Modulation for Excess Light Heat Protection
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Solution Overview
Problem
Electronic devices equipped with solar cells face damage due to excess energy from strong ambient light, which exceeds the device's energy reception limit, leading to energy conversion into heat and potential component damage.
Innovation Solution
An electronic device incorporating a solar cell, a first light modulating layer, a transmittance-adjustable lens, and a control circuit, where the control circuit adjusts the transmittance of the light modulating layer to regulate the energy received by the solar cell, preventing excessive energy absorption and reducing heat generation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the solar cell is exposed to strong ambient light to generate energy, then the energy generation increases, but the excess energy exceeds the device's reception limit and converts to heat causing component damage
Solution Approach 1:
A light modulating layer is introduced as an intermediary component between the ambient light and the solar cell. This layer can dynamically adjust its light transmission properties to regulate the amount of light energy reaching the solar cell, preventing excessive energy conversion to heat while maintaining adequate energy generation under normal conditions
Solution Approach 2:
The system changes the optical parameters (transmittance) of the light modulating layer based on ambient light intensity. When strong light is detected, the layer transitions to a state with lower transmittance to reduce energy input to the solar cell, thereby controlling heat generation and preventing damage
2Power
If the solar cell receives maximum energy from ambient light, then the power output increases, but the device cannot handle excess energy beyond its upper limit
Solution Approach 1:
The system implements a feedback control mechanism where the control circuit continuously monitors the energy reception status of the solar cell and adjusts the light modulating layer's transmittance accordingly. This feedback loop ensures that the solar cell operates within its safe energy reception range, maintaining both power output and device reliability
Solution Approach 2:
The light modulating layer transitions from a static component to a dynamic one, capable of real-time adjustment of its optical properties. This dynamic response allows the system to adapt to varying ambient light conditions, optimizing power generation while preventing overload conditions that would compromise reliability
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 solution effectively manages energy intake from varying light conditions, preventing damage to electronic components by adjusting the energy received by the solar cell, ensuring efficient energy use and extending device lifespan.
Implementation Method 1
solar cells have been in widespread use in various electronic devices
Implementation Method 2
the control circuit adjusts the transmittance of the light modulating layer to regulate the energy received by the solar cell
Implementation Method 3
a transmittance-adjustable lens... preventing excessive energy absorption
Data Source
AI summary
An electronic device includes a solar cell, a first light modulating layer, a transmittance-adjustable lens and a control circuit. At least a portion of the first light modulating layer is disposed on the solar cell. The control circuit is electrically connected to the solar cell and the transmittance-adjustable lens.