Although “photokinetic energy” watches seem fancy, they still use relatively primitive “solar” photoelectric conversion technology. The principle is to charge the rechargeable battery inside the watch via the solar panel on the dial. Although the light-powered watch does not need to replace the battery, it is still powered by electricity.
Since watches require very little power, a watch with a better lighting function can guarantee six months of battery life if exposed to sunlight for four or five hours. If you wear it on your wrist and frequently bask in the sun, it may not last for several years, which is why it is very popular with many users.
So why don't cell phones have "photodynamic energy"? The reason is also very simple, because with technologyogy, the photoelectric conversion efficiency of solar energy is too low and cannot meet the power required by modern smartphones. A little comparison shows that the watch doesn't even have a screen and the battery only needs a few hands to operate, so naturally it doesn't consume much power.
Smart phone LCD screens are often 5 or 6 inches. To ensure that such a large screen is not turned on, at least 10 W of power supply is required. The panel will definitely exceed the phone itself, and it cannot meet the most important "portability" requirement of a mobile phone.
In addition, the supply of solar energy is also strongly limited by light intensity. As the name suggests, solar power can only achieve maximum power under direct sunlight. But most scenarios in theMost of our use of smartphones takes place indoors, and the efficiency of solar panels will be seriously attenuated under indoor lighting, making it impossible to power cell phones.
So if you want to use a solar powered cell phone at home, you may need to sit near a window exposed to the sun all the time. In the past, some mobile phone manufacturers have launched mobile phones using solar charging. After an hour or two of exposure to the sun, they could last a few minutes, or even ten minutes of calls. However, with the advent of the smartphone era, cell phones are no longer just communication tools. They must also meet work, entertainment and other needs. The low power of solar energy is obviously unable to meet the needs.
In addition, the lithium battery integrated into the smartphonedoes itself is afraid of high temperature, and one of the problems caused by solar charging is high temperature. In addition, if you want to use your cell phone in the sun, you can only see the screen contents clearly by adjusting the brightness to the highest level, which will cause the electronic components inside the phone to heat up. mobile. You can think back to the scene of using a cell phone in the sun in summer. It's easy for the body to get hot.
This will not only cause the phone to freeze, but also seriously affect the life of the lithium battery. Unless we stop using our phones while charging them with solar energy, not using our phones during the day will definitely affect our daily life and work. Finally, solar panels are basically black, which is why most Eco-Drive watches have cblack adrans. But a smartphone cannot have just one color. Some people like gold, some like blue, and some like red.
In other words, even if solar-powered mobile phonesEven if we exist, we cannot buy colorful mobile phone products. Summary: At present, solar power technology can only be used on our common power banks, that is, using solar energy to charge power banks. However, solar batteries are only intended for emergency use when you can't find a power outlet outside. If you want to fully charge a 10,000 mAh power bank with solar energy, you may need to leave it in the sun for two or three days. .
In current technical conditions, it is therefore unrealistic to use low-consumption solar energy to power SMAhigh-power rtphones. Unless there is a revolutionary change in smartphones and they no longer rely on traditional LCD screens, it could take decades or even hundreds of years.
Can the solar battery and rechargeable battery of a photokinetic energy watch be replaced?
People often ask about solar energy and photokinetic energy, thinking they are different, but they are actually the same technology. Eco-Drive, as well as the Chinese and English names of Eco-drive, have been registered by Citizen, so other watches with solar technology cannot use the Chinese name of Eco-Drive. Many watches now have a solar function, such as Citizen, Seiko, Casio, TIMEX, Tissot, etc.
It can be traded, but the valuation may be a little high. The rechargeable battery used in the photokinetic watch is a batlong-lasting rechargeable battery (lifespan is approximately 20 years). In addition, it also uses amorphous solar cells that can convert various light energies into electrical energy. no problem during use. In certain circumstances, the lifespan can be more than 20 years.