Solar cell and lithium battery

Most of today's smart electronic products use rechargeable lithium batteries. Especially for mobile electronic devices, because of the characteristics of light and portable and many application functions, users are not restricted by environmental conditions during operation, and the operation time is long. Therefore, lithium batteries have become the most common choice although they have the weakness of endurance.

Although solar cells and lithium batteries sound like the same type of products, they are not always the same, and there is still the most essential difference between the two. To put it simply, a solar cell is a power generation device that does not itself save energy directly, while a lithium battery is a type of battery that can be continuously stored for use by users.

The lithium battery in the phone can be recharged

How solar cells work (inseparable from sunlight)

Compared with the lithium battery, a disadvantage of the solar battery is revealed, that is, it cannot be separated from the sunlight, and the conversion of solar energy into electric energy is synchronized with the sunshine in real time. Therefore, for solar energy, only the daytime or even the sunny day is itself. The home, but cannot be as full as the lithium battery, you can completely get rid of the limitations of time and environment, flexible use.

Solar battery "slimming" difficulties

Because the solar cell itself cannot store electrical energy, it is a very big bug for practical applications, so the R&D personnel have a chance to use the solar cell in combination with the ultra-large capacity battery. The lead storage battery is one of the most used in the solar power supply system large-capacity batteries. The combination of the two products has made the solar cells, which are not so small, more "bulky". If you want to apply them to mobile devices, you must first go through the process of "slimming".

Because the energy conversion rate is not high, the solar cell's sunshine area is usually large, which is the first technical difficulty facing its "slimming". At present, the limit of solar energy conversion is about 24%. Compared with expensive solar panel production, unless it is used in a large area, the practicality will be greatly reduced, not to mention it in mobile devices.

Because the energy conversion rate is not high, the solar cell's sunshine area is usually larger.

How to "slim down" solar cells?

The combination of solar cells and rechargeable lithium batteries is one of the research directions of current researchers and an effective way to move solar cells. The most common portable products for solar cells are mobile power. By converting light energy into electrical energy and storing it in a built-in lithium battery, solar mobile power can charge mobile phones, digital cameras, tablets and other products, saving energy and environmental protection.

Can solar cell mobility be achieved?

Solar cells that can truly achieve industrialization are mainly divided into two categories: the first category is crystalline silicon cells, including polysilicon and monocrystalline silicon cells, which account for more than 80% of the market; the second category is thin-film batteries, which are subdivided into Amorphous silicon cells are simple in process and low in cost, but have low efficiency and signs of decline.

Thin-film solar cells are only a few millimeters thick and can be bent, rolled, and made of a variety of different materials. They can be directly connected to a lithium battery for charging. Moreover, such chargers can be presented in different shapes, and it is more convenient to carry them. For example, hanging on a school bag or clothes, the phone can be charged, and the battery life problem can be solved.

Thin-film solar cells are thinner than traditional solar cells

Now many researchers believe that graphene-based lithium battery is an important breakthrough to solve the battery life of mobile electronic devices. If the conversion rate of solar cells per unit area can be effectively improved, then the cool form of mobile charging anytime and anywhere will become the perfect way for future energy applications.

Summary: Solar energy is the most generous gift of nature, but the use of solar energy is not very popular at present. The use of solar power also has the problems of high cost and low conversion efficiency. Only by effectively increasing the conversion rate of solar energy per unit area can we effectively use energy and achieve a perfect transition of solar energy-electric energy. At that time, the mobilization of solar cells will no longer be a problem.

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