Difference between power bank and charger丨MSH

The power bank has electricity storage, and the charger is just a medium. The charger includes the function of a power adapter, but there are also control circuits such as constant current and constant voltage inside the charger to meet the charging characteristics.

A charger usually refers to a device that converts alternating current into low-voltage direct current. It includes current limiting, voltage limiting and other control circuits that meet the charging characteristics. The power adapter is a power converter that is transformed, rectified and regulated. The output is DC, which can be understood as a low-voltage regulated power supply when the power is satisfied.
Let's talk about what is a power adapter? What is a charger? What is the relationship and difference between the two.

Charger: usually refers to a device that converts alternating current into low-voltage direct current. The charger is a dedicated DC power supply for rechargeable batteries. It includes current limiting, voltage limiting and other control circuits that meet the charging characteristics.

Chargers are widely used in various fields, especially in the field of life, they are widely used in electric vehicles, flashlights and other common electrical appliances. It generally charges the battery directly without going through any intermediary equipment and devices.
The process of the charger is: constant current - constant voltage - trickle, three-stage intelligent charging. The three-stage charging theory in the charging process can greatly improve the charging efficiency of the battery, shorten the charging time, and effectively prolong the battery life. The three-stage charging adopts constant current charging first, then constant voltage charging, and finally uses float charging for maintenance charging.
Generally divided into three stages: fast charging, supplementary charging, and trickle charging:
Fast charging stage: The battery is charged with a large current to quickly restore the battery power. The charging rate can reach more than 1C. At this time, the charging voltage is low, but the charging current will be limited within a certain range of values.
Complementary charging phase: Compared with the fast charging phase, the supplementary charging phase can also be called the slow charging phase. When the fast charging phase is terminated, the battery is not fully sufficient, and a supplementary charging process needs to be added. The supplementary charging rate generally does not exceed 0.3C. Because the battery voltage increases after the fast charging phase, the charging voltage in the supplementary charging phase is also There should be some improvement and constant within a certain range.
Trickle charging stage: At the end of the supplementary charging stage, when it is detected that the temperature rise exceeds the limit value or the charging current decreases to a certain value, it starts to charge with a smaller current until a certain condition is met and the charging ends.
Power adapter: The common power adapter on the market is a power converter that is transformed, rectified and regulated, and the output is DC, which can be understood as a low-voltage regulated power supply when it meets the power.

Power adapters are widely used in routers, telephones, game consoles, language repeaters, walkmans, notebooks, mobile phones and other equipment. Most power adapters can automatically detect 100 ~ 240V AC (50/60Hz).
The power adapter is a power supply conversion device for small portable electronic devices and electronic appliances. It externally connects the power supply to the host with a line, which can reduce the size and weight of the host. Only a few devices and electrical appliances have built-in power in the host. Inside.
It is composed of a power transformer and a rectifier circuit. According to its output type, it can be divided into AC output type and DC output type; according to the connection method, it can be divided into wall type and desktop type. There is a nameplate on the power adapter, which indicates the power, input and output voltage and current, and pay special attention to the range of the input voltage.

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