What is the difference between a lithium battery and a normal battery?

1. Lithium-ion batteries have a higher specific energy, which means that the unit volume (weight) contains more energy than ordinary batteries. 2. The working voltage of lithium-ion battery is high, the normal voltage of lithium battery is 3.7V, the power is 4.2V, the ordinary dry battery and the rechargeable battery are 1.5V, 1.2V is no electricity, and the electric equipment, such as mobile phone, camera, MP3, etc. It is necessary to use a working voltage of 3.7V, so only lithium batteries can be selected. The camera can also use a regular battery, but requires two sections. 3. Lithium battery is environmentally friendly and pollution free. The internal material is lithium manganate, or cobalt lithium, or iron lithium, and the other is carbon, which does not contain heavy metals such as mercury, nickel, and cadmium that pollute the environment. 4. Lithium battery has broad development prospects and high cost performance. Its excellent charge and discharge cycle performance makes it have a wide application field and prospects, and its cost performance is outstanding.

A lithium battery is a type of battery using a lithium metal or a lithium alloy as a negative electrode material and using a nonaqueous electrolyte solution. The earliest lithium battery came from the great inventor Edison, using the following reactions:

Li+MnO2=LiMnO2

The reaction is a redox reaction and is discharged.

Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal are very demanding on the environment. Therefore, lithium batteries have not been used for a long time.

But now lithium batteries have become a mainstream. First, the rechargeable battery can be charged, and the ordinary battery cannot be charged.

Second, the internal resistance of the rechargeable battery is small, and the internal resistance of the ordinary battery is large, so the ordinary battery is not suitable for high-current discharge equipment, such as a digital camera.

Third, the rechargeable battery self-discharge is large, the ordinary battery self-discharge is small, so the rechargeable battery is not fully charged without leakage (about half of the leak in about two months).

Fourth, the rechargeable battery is not resistant to storage, the ordinary battery is resistant to storage, so the long-term performance of the rechargeable battery will be greatly reduced, so that it cannot be used.

5. The charging battery terminal voltage is 1.2V, and the ordinary battery will be 1.5V. However, since the internal resistance of the rechargeable battery is small, the pressure is reduced during use, so in most cases, the two can be used universally.

So in summary, if you want to use regular high-current discharge equipment, such as digital cameras, with audio and so on, try to use rechargeable batteries. Small current discharge devices, such as remote controls, quartz clocks, etc., try to use ordinary batteries.

The above is a comparison of a nickel-hydrogen rechargeable battery and an alkaline battery or a common zinc-manganese battery. As for the parameters of lithium battery, the above theoretical explanation cannot be completely realized.

A battery is one of the batteries. Its function is to store limited electric energy and use it in a suitable place. It works by converting chemical energy into electrical energy.

It uses a lead plate filled with sponge lead as a negative electrode, a lead plate filled with lead dioxide as a positive electrode, and 22 to 28% of dilute sulfuric acid as an electrolyte. When charging, electrical energy is converted into chemical energy, which is converted into electrical energy during discharge. When the battery is discharged, the metal lead is a negative electrode, which undergoes an oxidation reaction and is oxidized to lead sulfate; the lead dioxide is a positive electrode, and a reduction reaction occurs, and is reduced to lead sulfate. When the battery is charged by direct current, the two poles respectively produce lead and lead dioxide. After removing the power supply, it returns to the state before discharge to form a chemical battery. A lead storage battery is a battery that can be repeatedly charged and discharged, and is called a secondary battery. Its voltage is 2V, usually three lead batteries are used in series, the voltage is 6V. The car uses six lead batteries in series to form a 12V battery pack. The lead storage battery should be supplemented with sulfuric acid after a period of use to keep the electrolyte containing 22-28% of dilute sulfuric acid.

A lithium battery is a type of battery using a lithium metal or a lithium alloy as a negative electrode material and using a nonaqueous electrolyte solution. The earliest lithium battery came from the great inventor Edison.

Due to the very active chemical properties of lithium metal, the processing, storage and use of lithium metal are very demanding on the environment. Therefore, lithium batteries have not been used for a long time.

With the development of microelectronics technology in the twentieth century, the number of miniaturized devices is increasing, and high requirements are placed on power supplies. Lithium batteries have entered a large-scale practical stage.

It was first used in pacemakers. Since the self-discharge rate of the lithium battery is extremely low, the discharge voltage is gentle. It makes it possible to implant the pacemaker into the human body for a long time.

Lithium batteries generally have a nominal voltage higher than 3.0 volts, making them more suitable for use as integrated circuit power supplies. Manganese dioxide batteries are widely used in computers, calculators, cameras, and watches.

Compared to lithium-ion batteries, lithium polymer batteries have the following characteristics:

1. No battery leakage problem, the battery does not contain liquid electrolyte inside, using colloidal solids.

2. Can be made into a thin battery: with a capacity of 3.6V400mAh, its thickness can be as thin as 0.5mm.

3. The battery can be designed in a variety of shapes.

4. The battery can be bent and deformed: the polymer battery can be bent up to 900 or so.

5. It can be made into a single high voltage: liquid electrolyte battery can only be connected in series with several batteries to obtain high voltage, polymer battery.

6. Since there is no liquid in itself, a multi-layer combination can be made in a single piece to achieve a high voltage.

7. The capacity will be twice as high as the same size lithium-ion battery.

Second, the life of polymer lithium battery

The correct statement: Lithium battery life is related to the number of completions of the charge cycle, and is not directly related to the number of charge cycles.

A simple understanding, for example, a lithium battery used only half of the electricity on the first day, and then fully charged. If it is still the next day, it will be charged in half, and it will be charged twice in total. This can only be counted as one charging cycle, not two. Therefore, it is usually possible to complete a cycle after several charges. Each time a charge cycle is completed, the amount of power is reduced a little. However, the reduction is very small. After a high-quality battery has been charged for many cycles, it will still retain 80% of the original power. Many lithium-powered products are still used after two or three years, which is why. Of course, the life of the lithium battery will eventually need to be replaced.

The life of lithium batteries is generally 300 to 500 charge cycles. Assuming that the amount of electricity supplied by a full discharge is Q, if the power consumption is reduced after each charging cycle, the lithium battery can provide or supplement 300Q-500Q power in its lifetime. From this we know that if you charge 1/2 each time, you can charge 600-1000 times; if you charge 1/3 each time, you can charge 900-1500 times. By analogy, if you charge randomly, the number of times is variable. In short, no matter how charged, it is constant to add a total of 300Q ~ 500Q power. Therefore, we can also understand that the life of the lithium battery is related to the total charge of the battery, regardless of the number of times of charging. The effect of deep charge and shallow charge on lithium battery life is not much different.

In fact, shallow charge is more beneficial for lithium battery. Only when the power module of the product is calibrated for lithium battery, it is necessary to deep charge. Therefore, products that use lithium-ion power supply do not have to be constrained by the process. Everything is convenient and can be charged at any time without worrying about affecting life.

If lithium is used in an environment above the specified operating temperature, above 35 °C, the battery's power will continue to decrease, the battery will not be as long as usual. If the device is to be charged at such a temperature, the damage to the battery will be greater. Even if the battery is stored in a hot environment, it will inevitably cause damage to the quality of the battery. Therefore, trying to maintain a favorable operating temperature is a good way to extend the life of the lithium battery.

If you use lithium battery in a low temperature environment, that is, below 4 °C, you will also find that the battery life is reduced. Some mobile phones' original lithium batteries are not charged even in low temperature environments. But don't worry too much. This is only a temporary situation. Unlike the use in high temperature environment, once the temperature rises, the molecules in the battery are heated and immediately return to the previous power.

In order to maximize the performance of a lithium-ion battery, it is necessary to use it frequently so that the electrons in the lithium battery are always in a flowing state. If you do not use lithium batteries frequently, please remember to complete a charging cycle for the lithium battery every month, do a power calibration, that is, deep charge and deep discharge once.

The page contains the contents of the machine translation.