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2021-04-21

Application of lithium ion battery

Lithium ion batteries are widely used and close to life. Application of capacity lithium ion battery: solar street lamp, UPS backup power supply, mobile power supply, notebook mobile phone battery, lighting system, energy storage system, medical equipment, financial equipment. Smart home, etc.
Power lithium-ion battery uses: electric vehicles, mopeds, electric things, e-cigarettes, aircraft models, etc.
2021-04-21

What is a lithium ion battery?

Lithium ion batteries can be divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. Lithium metal battery, the fifth generation product of rechargeable battery, was born in 1996. Its serenity, specific capacity, self discharge rate and function value ratio are better than lithium ion battery. Due to its own high skill requirements, only a few countries are producing this kind of lithium metal battery.
2021-04-21

What are the advantages of polymer batteries?

Polymer battery is a polymer lithium-ion battery, which is a kind of lithium-ion battery. The advantages of polymer lithium-ion battery are summarized as follows:
1. the capacity density is large, and its capacity density is 1.5-2.5 times of that of Ni h battery or Ni Cd battery, or higher;
2. the self discharge is small, and its capacity loss is also small after a long time;
3. long life, and its cycle life can reach more than 500 times in normal use;
2021-04-21

Characteristics of lithium ion battery

Characteristics of Li ion battery:
1. High energy and long service life.
2. Rated voltage high energy suffers high power.
3. Low self discharge rate, light weight, suitable for rough temperature.
4. Green environmental protection, regardless of production, use and scrap, does not contain or present any toxic and harmful heavy metal elements and substances such as lead, mercury and cadmium.
2021-04-21

What are the factors influencing the internal resistance of Li ion batteries

Temperature and environmental temperature are important factors affecting the resistance. For lithium-ion batteries, the temperature affects the activity of electrochemical materials, which directly determines the speed of electrochemical reaction and the speed of ion movement.
2021-04-21

What should be paid attention to in spot welding of lithium battery

Because the positive plate of the electric lithium-ion battery cell is made of aluminum strip, tin can not be directly welded, so it is necessary to add nickel strip. Ultrasonic metal spot welding method is usually used: high frequency oscillation occurs by ultrasonic, which makes the friction between two metal plates heated locally, resulting in fusion connection. Frequency: 20K ~ 35kHz, time: about 0.3 seconds. Pay attention to the selection of suitable welding equipment for metal ultrasonic welder.