Form the two main parts of a lithium polymer mobile phone battery
Lithium polymer mobile phone battery are distributed in every corner of our lives. Applications include mobile phones, tablets, laptops, smart watches, mobile power supplies, emergency power supplies, razors, electric bicycles, electric cars, electric buses. , tourist cars, drones, and other types of power tools. As the carrier of electric energy and the power source of many devices, it can be said that leaving the lithium polymer mobile phone battery, today's material world can't play. Mobile phone battery is just one of the applications of lithium polymer mobile phone battery, then what constitutes mobile phone battery?
The lithium polymer mobile phone battery consists mainly of two major parts, a lithium battery cell and a protective plate. The lithium battery core is mainly composed of a positive electrode plate, a separator, a negative electrode plate and an electrolyte; the positive electrode plate, the separator and the negative electrode plate are wound or laminated, packaged, and the electrolyte is poured, and the battery is formed into a battery core after being packaged, and the function of the lithium battery protection plate is many. I don't know, the lithium battery protection board, as the name suggests, is to protect the lithium polymer mobile phone battery. The role of the lithium battery protection board is to protect the battery, but not charge, but flow, and output short circuit protection.
1. Remove the lithium polymer mobile phone battery inside the mobile phone and use the DC stabilized power supply to supply power to the mobile phone.
2, boot, test the current of the phone. In the Jinshan Battery Doctor shortcut switch menu, turn on all functions and read the power consumption of the phone under different conditions. The net results of the netizens are as follows:
The average video current is about 0.58A (condition: headphone sony E931 volume 75%, maximum 0.8, minimum 0.33, mostly between 0.4 and 0.7A).
The average current of the call is about 0.47A (condition: 10086, the higher the speed can reach 0.67, the lowest is 0.32, and the majority is kept between 0.52 and 0.4A, which may have large fluctuations).
The average current of the game is about 0.6A (condition: no sound, up to 0.7, minimum 0.48, mostly between 0.5 and 0.6A).
The average current of listening music is about 0.17A (condition: the screen is turned off, the volume of the headphones sony E931 is 75%, the highest is 0.23, the lowest is 0.10, and the majority is kept between 0.12 and 0.2A).
Main functions: overcharge protection function, over discharge protection function, short circuit protection function, over current protection function, over temperature protection function, balanced protection function.
Interface definition: The charging port and the discharging port of the board are independent of each other, the two are common to the positive pole, B- is the negative pole connecting the battery, C- is the negative pole of the charging port; P- is the negative pole of the discharging port; B-, P-, C - The pads are all via type, and the pad holes are all 3 mm in diameter; the battery charge detection interfaces are output in the form of DC pins.