Lithium Battery Knowledge

Primary batteries and secondary batteries are one of the classification methods for battery classification, as well as classification according to battery shape and material, and so on.

Regarding the use and maintenance of laptop batteries, I believe many friends are not sure what is the best. Today, we will do a science popularization.

In the structure of lithium batteries, the diaphragm is one of the key internal components. The performance of the lithium battery separator determines the battery's interface structure, internal resistance, etc., which directly affect the battery's capacity, cycle and safety performance. A separator with excellent performance plays an important role in improving the overall performance of the battery.

The lithium cobalt oxide battery has a stable structure, high specific capacity, outstanding comprehensive performance, but poor safety and high cost. Mainly used for small and medium batteries, the nominal voltage of the battery is 3.7V. Regarding the safety performance analysis of lithium cobalt oxide batteries, we will explain in detail through the safety comparison of nickel manganate, lithium iron phosphate, lithium cobalt oxide and lithium manganate batteries:

Lithium battery electrolyte is the carrier of ion transmission in the battery. Generally composed of lithium salt and organic solvent. The electrolyte plays a role in conducting ions between the positive and negative electrodes of the lithium battery, ensuring that the lithium ion battery has the advantages of high voltage and high specific energy. Electrolyte is generally prepared from raw materials such as high-purity organic solvents, electrolyte lithium salt and necessary additives in a certain proportion under certain conditions.

Many times, when people go out, they will encounter the situation that the mobile phone is out of power and forget to bring the power bank and charger, which brings certain inconvenience to life. If there is such a piece of clothing, it looks no different from ordinary clothes, but it can wirelessly charge mobile phones and other electronic devices. Isn’t it exciting?

Polymer lithium ion batteries can be divided into three categories:

1. Solid polymer electrolyte lithium ion battery.

2. Gel polymer electrolyte lithium ion battery.

3. Lithium-ion battery with polymer cathode material.

Advantages of lithium polymer battery:

1. Good safety performance

2. The thickness is small and can be made thinner

3. Lightweight

4. Large capacity

5. Small internal resistance

6. The shape can be customized

7. Good discharge characteristics

8. Simple protection board design

Introduction to the types of lithium batteries

Classified by battery shape

Classified by working temperature

Classified by electrolyte state

Classified by use category

Classified by cathode material

There are many reasons for the explosion of 18650 lithium-ion batteries, mainly three.

1. Overcharged

2. Short circuit

3. High temperature

Earlier power banks gave most users a big and heavy impression, but today's power banks are small, especially shared ones. Friends who have used it will feel very light. This is the credit of the polymer lithium-ion battery. In fact, due to the emergence of polymer lithium-ion batteries, many electronic products can perform better, such as TWS Bluetooth headsets and special small electronic devices. Unlike a few years ago, there are fewer and fewer 18650 lithium-ion batteries used in mobile power sources. Is it really eliminated? In addition to volume and weight, what is the difference between polymer lithium ion battery and 18650? This is what we are going to talk about today.