Both are used as current collectors because they have good electrical conductivity and a soft texture (which can also be beneficial for bonding). It is relatively common and cheap, and at the same time, a layer). A protective oxide film can be formed on the surface of both.
This contact point is not the copper piece outside the battery, but a connection inside the battery. The tabs are divided into three materials. The positive electrode of the battery is made of aluminum (Al), the negative electrode is made of nickel (Ni), and the negative electrode is also made of copper-clad nickel (Ni-). Cu) They are both composed of metal films and strips.
Main advantages:
The film is the insulating part of the tongue. Its function is to prevent short circuits between the metal strip and the aluminum-plastic film when the battery is packaged. and it is heated during packaging(about 140℃) and heat-sealed with aluminum-plastic film to prevent leakage.
A tab consists of two pieces of film sandwiching a metal strip. There are three types of films currently used on the market: black glue, white glue and single-layer glue. The commonly used black film has a three-layer structure: melanin, melting point 66°C; PE, melting point 105°C PP, melting point 137°C;
Both are used as current collectors because they have good electrical conductivity and a soft texture (this may also be the case (this will make it easier to bond), they are relatively common and inexpensive, and can form a protective oxide film on both surfaces
This contact point is not the copper part on the outside of the. battery, but a connection inside the battery The tabs are divided into three materials The positive electrode of the batt.erie uses aluminum (Al) material.
Main advantages:
The film is the insulating part of the tongue. Its function is to prevent short circuits between the metal strip and the aluminum-plastic film when the battery is packaged. and it is heated during packaging (about 140℃) and heat-sealed with aluminum-plastic film to prevent leakage.
Although there are many types of vehicles, their structures are similar. It must be said that this is the result of standardization and the need for large-scale production lines. With the development of society, the progress of science and technology and the change of demand, the appearance of railway vehicles has begun to change, especially the passenger compartments no longer have the same faces. However, their basic structure has not changed significantly, but the specific parts have a more scientific structural design.fique and advanced.
Generally speaking, the basic structure of a vehicle consists of five main parts: the body, the chassis, the running section, the hitch buffer device and the braking device .
The body is the part of the vehicle that is used to transport goods or passengers, and also provides the basis for the installation and connection of other vehicle components. The bodies of early vehicles were mainly made of wood, supplemented with steel plates, arch bars, etc. for reinforcement. Modern bodies are mainly steel structures or lightweight metal structures.