ShenZhen Yinghuiyuan Electronics Co.,Ltd
The power supply to the laptop and the laptop to the power supply is different, so YHY manufacturer today for you to introduce the Power Adapter and battery power supply principle, let's have a look!
First of all, the output of the battery is pure DC, which is very clean. It can be directly connected to the DC transformer module. The voltage of the battery is neither possible nor need to be designed very high. 8V is enough.
Moreover, the chemical electromotive force of lithium battery determines that the output voltage of a battery cell can only be 3. It's about 6V, so a lot of batteries use three stages in series, 10. 8V is a popular battery voltage. Some batteries have a nominal value of 3. 6V is a slightly larger multiple, like 3. 7V or 11. 2V, et cetera, is actually to protect the battery or to cheat when calculating the design capacity of the battery.
If the use of power supply, the situation is more complex, the first need to add voltage for further voltage filtering, in order to ensure that the power performance is not very good in the case of stable work, voltage after the voltage soldier is divided into two ways, one way to work on the laptop power supply, another way to charge the battery.
The part that powers the laptop happens to be the same as the part that powers the battery, and the part that charges the battery needs to be added to the cell through the battery's charging control circuit, which can be complex, In simple terms, it should include primary voltage regulator, precision tunable voltage regulator, thyristor regulation pulsation output, voltage regulator output, current feedback, chip charging process recording and calculation, charging program self-feedback adjustment parameters, so the power supply voltage must be greater than the voltage of the cell, only to have sufficient differential pressure margin supply to each unit of the charging control circuit.
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Privacy statement: Your privacy is very important to Us. Our company promises not to disclose your personal information to any external company with out your explicit permission.