Eliminates the need for disposable batteries with interior light output

15-08-2022 | Epischine | New technologies

Epishine has developed a solar cell optimized for indoor use. Light Energy Harvesting (LEH) modules are optimized to convert light from interior lighting into enough energy to power small electronic devices.

The LEH module is only 0.2mm thick, which makes it easy to integrate into different devices without adding bulk. The module also adapts to curved surfaces with a radius of curvature of 10 mm.

The module can be connected more or less directly to the application for applications that only need to be powered in the presence of light, such as an access card or a thermometer.

In applications where power is needed, even when there is no light available or the momentary power required is greater than the LEH module can supply, an energy storage solution like a small super cap or a rechargeable battery can be implemented. The LEH module charges the energy storage when light is available, and the storage solution powers the application when needed.

Examples of applications built in this way are sensors that communicate wirelessly, such as temperature and humidity sensors or fire detectors.

Its standard cell sizes have an active area of ​​50 mm by 20, 30 or 50 mm.

Its LEH3 modules are mainly made of hydrocarbon-based PET and are non-toxic to the environment. Batteries typically have the greatest impact on life cycle analysis (LCA) in this type of electronics. Most energy harvesting applications require a small amount of energy storage as part of the power solution, but when you can switch from a battery that stores energy for several years (without energy harvesting ) to something that stores a few days of energy, the LCA calculation is vastly improved.