A complete lithium-ion battery system consists of four parts: electrolyte separators, positive and negative electrodes (usually separators or polymer electrolytes that have both lithium ion transfer functions and support), negative electrodes and positive electrodes. A battery is actually an energy conversion device: when charging, it converts electrical energy into chemical energy and vice versa. When both poles of the battery are charged, the electrons are transferred from the negative pole to the negative pole through the external circuit and the chemical energy is converted into electrical energy. When a higher opposing voltage is applied to both poles of the battery, the direction of electron transfer is reversed and the electrical energy supplied by the high voltage device is converted into chemical energy and stored in the battery.
There are many battery applicationslithium at home and abroad. The most mature include lithium-nickel, lithium-manganese and other batteries, as well as emerging iron batteries. These days, batteries are generally very safe. In the past, lithium-cobalt batteries were a bit dangerous and prone to explosions. There is no problem with the safety of current lithium batteries.
What is lithium battery?
Explosion-proof solar street light is a kind of lighting equipment that uses solar energy to produce electricity electricity and store electrical energy. It can provide lighting at night. and has explosion-proof function. It is suitable for some special applications, such as petrochemical plants, mines, etc.
The batteries used in explosion-proof solar street lights are generally lithium batteries. The lithium battery is a high energy density batteryEU, lightweight, without memory effect and with low self-discharge rate. It has a long service life and high safety performance, so it is very suitable for explosion-proof solar street lights.
There are many types of lithium batteries, the most common are lithium-ion (Li-ion) batteries and lithium-polymer (Li-polymer) batteries. Both batteries have high energy density and long cycle life, but in some specific application scenarios, lithium polymer batteries are more popular. Compared with lithium-ion batteries, lithium-polymer batteries are thinner and lighter, and can better adapt to the design requirements of explosion-proof solar street lights.
The lithium batteries of explosion-proof solar street lights generally have a large capacity to ensure continuous power supply at night. This ensures that the street lights can continue to light up lat night and can store enough energy when charging to cope with rainy weather for several consecutive days.
In order to ensure the normal operation of explosion-proof solar street lights, lithium batteries must have special properties. Firstly, they must have high charging and discharging efficiency to ensure that the solar charging panels can effectively convert solar energy into electrical energy and provide stable power supply at night. Second, lithium batteries must have a low self-discharge rate to ensure that they can be stored for a long time even if not used for a long time. In addition, lithium batteries must also have high safety performance to avoid safety problems such as overcharging, overdischarging and short circuit.
In short, beats themteries used in explosion-proof solar street lights are generally lithium batteries, of which lithium polymer batteries are the main ones. This type of battery has high energy density, long life and high safety performance, can meet the needs of explosion-proof solar street lights, and can work stably in special environments.
Lithium batteryThis is the abbreviation of lithium-ion battery
A battery composed of a lithium-oxygen compound as the positive electrode , a negative electrode material (graphite, etc.) and an organic solvent dissolved in lithium salt (LiPF6, etc.) as the electrolyte.
Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium-ion batteries. Lithium-ion batteries do not contain metallic lithium and are rechargeable.
The batterylithium is short for lithium-ion battery. As a new type of energy storage battery, it gradually replaces the traditional lead-acid battery.
The most common batteries in daily life are cell phone batteries, electric vehicles and trams, and power tool batteries.
1. From appearance: cylindrical, square.
2. Of the shell material: steel shell, aluminum shell, plastic shell, aluminum plastic film (soft packaging).
3. According to energy density: capacity type and power type.
4. Separated from the electrolyte: liquid lithium-ion battery, solid (polymer) lithium-ion battery.
5. From the perspective of positive electrode materials: lithium cobalt oxide (C), lithium manganate (M), ternary lithium (N), and lithium iron phosphate (F).
The cylindrical 18650 battery is commonly used, which is a cylindrical batteryylindrical with a diameter of 18 mm and a height of 65 mm.
Notes:
First, lithium-ion batteries can be seen everywhere in people's lives, in various portable electronic products, vehicle GPS, etc. Lithium-ion batteries have become the key to keeping these tools running. Keeping lithium-ion batteries properly charged and discharged can extend battery life. Keeping the lithium-ion battery power between 10% and 90% is beneficial to protect the battery. This means that when charging batteries of digital products such as mobile phones and laptops, it is not necessary to reach the maximum value.
If digital products equipped with lithium-ion batteries are exposed to sunlight or stored in hot cars, it is best to keep these products turned off because if the operating temperature exceeds 60 degrees Celsius, the lithium-ion battery will accelerate aging. Lithium battery charging temperature range: 0 ~ 45 degrees Celsius, lithium battery discharge temperature range 0 ~ 60 degrees Celsius.
Second, if the cell phone battery needs to be charged every day, the reason may be that the battery is defective or it is time to "retire".
For laptop owners, it is best to remove the battery if it is plugged in for a long time (the high heat generated by the computer while in use is not good for the battery of the laptop).
Third, under normal circumstances, 50% power is most conducive to the preservation of lithium-ion batteries.