What are the commonly used standards for batteries?

Commonly used IEC standards for batteries: The standard for nickel-metal hydride batteries is IEC61951-2:2003; the lithium- ion battery industry generally follows UL or national standards.In addition, the commonly used standards for batteries also include the Japanese Industrial Standard JIS C standards for batteries.

IEC, the International Electrical Commission, is a worldwide organization for standardization composed of electrotechnical commissions of various countries. Its purpose is to promote the standardization of the world's electrical and electronic fields. IEC standards are standards developed by the International Electrotechnical Commission.

What are the differences between primary batteries and secondary batteries?

The main difference is the difference in the active material. The active material of the secondary battery is reversible, while the active material of the primary battery is not reversible. The self-discharge of the primary battery is much smaller than that of the secondary battery, but the internal resistance is much larger than that of the secondary battery, so the load capacity is lower. In addition, the mass specific capacity and volume specific capacity of the primary battery are larger than those of the general rechargeable battery.

What are the main structural components of lithium- ion batteries?

lithium- ion battery are: battery upper and lower covers, positive electrode sheet (active material is lithium cobalt oxide), separator (a special composite film), negative electrode (active material is carbon), organic electrolyte, battery shell (divided into Steel shell and aluminum shell) and so on.

What is the internal resistance of the battery?

Refers to the resistance of the current flowing through the battery when the battery is working. It consists of ohmic internal resistance and polarization internal resistance. The large internal resistance of the battery will cause the battery discharge working voltage to decrease and the discharge time to be shortened. The internal resistance is mainly affected by factors such as battery material, manufacturing process, and battery structure. It is an important parameter to measure battery performance. Note: Generally, the internal resistance in the charging state is used as the standard. The internal resistance of the battery needs to be measured with a special internal resistance meter, not with the ohm gear of a multimeter .

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