Battery SOC is used to reflect the remaining capacity of the battery, which is numerically defined as the ratio of the remaining capacity to the battery capacity, usually expressed as a percentage, that is, the state of charge. Its value range is 0~ 1, when "SOC=0" means that the battery is completely discharged and when "SOC= 1" means that the battery is fully charged. Battery SOC can not be measured directly, but can only be estimated by battery terminal voltage, charging and discharging current and internal resistance.

Battery refers to a part of the space of a cup, can or other container or composite container containing electrolyte solution and metal electrodes that generate current, and a device that can convert chemical energy into electrical energy. Its performance parameters mainly include electromotive force, capacity, specific energy and resistance.

SOC is usually called a system on chip, and some people say that SOC is an integrated circuit with special purpose, which is the inevitable trend of the development of integrated circuits, technology and IC industry in the future.

Type of battery

1, lead-acid battery

Lead storage batteries are widely used in electric power, energy storage, electric vehicles and other fields. Especially the advantages of mature technology and low cost, it is difficult to be replaced by other battery products in the short term.

2.UPS battery

UPS is called uninterruptible power supply because it can quickly switch to the "inverter" state in case of power failure, so that the computer in use will not lose important files due to sudden power failure before storing.

3. Lithium ferrous phosphate battery

Lithium iron phosphate battery is the safest high specific energy battery in the lithium ion battery family. The discharge voltage is very stable, generally 3.2V when discharged to the remaining 10% capacity. The voltage changes rapidly, and the cut-off voltage is generally 2.5V.