What is the difference between the battery charger and power supply?

November 11, 20200

Charger usually refers to a kind of equipment that converts alternating current into low voltage direct current. It includes current limiting, voltage limiting, etc. to meet the charging characteristics

The power adapter is a power converter through voltage transformation, rectification and voltage stabilization. The output is DC, meeting the power requirements

It can be understood as a low voltage regulated power supply. Now let’s talk about what is the power adapter? What is the charger? What are the two Relationships and differences?

Charger usually refers to a device that converts alternating current into low voltage direct current

It is a special DC power supply for rechargeable batteries. It includes current limiting, voltage limiting and other control circuits to meet the charging characteristics.

Charger is widely used in various fields, especially in the field of life is widely used in electric vehicles, LED driver,massage chair,back massage, massage gun,neck massage and other common electrical appliances.

electronic tool charger
li-on battery charger,PD chargring,Type C USB charger

It generally charges the battery directly without any intermediary equipment and device.

Charger process is: constant current – constant voltage – trickle, three – step intelligent charging. Three stage charging theory in charging process

It can greatly improve the charging efficiency of the battery, shorten the charging time, and effectively extend the battery life. Three stage charging adopts constant current first

Charging, then constant voltage charging, and finally using floating charge for maintenance charging.

It is generally divided into three stages: fast charging, supplementary charging and trickle charging.

Fast charging stage: the battery is charged with high current to quickly recover the battery power, and the charging rate can reach above 1C,

At this time, the charging current will be limited to a lower value.

Complementary charging stage: compared with the fast charging stage, the replenishment charging stage can also be called the slow charging stage.

At the end of the charging stage, the battery is not fully sufficient, and a supplementary charging process is required. Generally, the supplementary charging rate does not exceed 0.3C

Because the battery voltage increases after the fast charging stage, the charging voltage of the supplementary charging stage should also be increased, and the charging voltage should be constant

Within a certain range.

Trickle charging stage: in the later stage of the supplementary charging stage, when the temperature rise exceeds the limit value or the charging current decreases to

After a certain value, start charging with smaller current until certain conditions are met. +

Power adapter: English name adapter, the common power adapter on the market is through voltage transformation, rectification and voltage stabilization

Source converter, the output is DC, in the case of meeting the power can be understood as a low-voltage regulated power supply. +

Power adapter is widely used in routers, telephone subunits, game machines, language repeaters, Walkman, notebook

Mobile phones and other devices. Most power adapters can automatically detect 100-240V AC (50 / 60Hz).

Power adapter is a small portable electronic equipment and power supply conversion equipment of electronic appliances

A line is connected to the host, which can reduce the volume and weight of the host. Only a few devices and appliances have power built into the hostInside.

It is composed of power transformer and rectifier circuit. According to its output type, it can be divided into AC output type and DC output type

Can be divided into wall type and desktop type. There is a name plate on the power adapter, which indicates the power, input and output voltage and current


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