So far, smartphones have not met the requirements of super thin, superscreen coverage, and the size of cell phones has become smaller. How does the lithium cell phone work? What's the construction
Cell phone lithium battery construction
Cellular batteries consist of cores and protected circuits, core energy storage and panels that are overcharged or overprotected. Lithium batteries have panels that protect batteries from overcharge, overlay and short circuits by cutting off recharge circuits。
Activation of lithium cell phones -- charging process
The cells are active in lithium ions, which are produced from a positive polar "jumping" into electrolytic fluids, through which the electrolytic "crawling" through a small curvatured hole on the diaphragm, moving to the negative pole, combined with electrons that have long run through external circuits to the negative pole。
On the positive pole, the reaction was: licoo2 = charge = li1-xcoo2+xli+xe (electronic)
The negative pole response was 6c+xli+xe===lixc6
In the charging process, li+ is removed from the orthodox licoo2 and enters the electrolytic fluid, moves to the negative polar with the additional external electric field of the charger, then enters the negative pole of graphite or coke c and forms the lic compound at the negative polar。
Activation of lithium cell phones - discharge process
Both electrons and li+ act simultaneously, in the same direction but with different paths, with electrons running from negative poles through external circuits to positive poles; lithium ion li+ “jumping” from negative poles into electrolytic fluids, “crawling over” tiny curved holes in the diaphragm, “swaming” to positive poles, combined with long-run electronics. What we usually call battery capacity is discharge capacity。
Activation of lithium cell phones -- battery protection panels
Battery protection panels are primarily integrated circuit boards that protect rechargeable batteries (generally lithium batteries). Lithium batteries (fillable) are in need of protection because their own materials determine that they cannot be overfilled, overlayed, overflowed, short circuits and overheated discharges, so that lithium batteries will always have protection panels and a current safety device。
The following figure shows battery panels to protect circuits. Ptc: positive temperature factor thermally sensitive electrical resistance; ntc: negative temperature factor thermally sensitive electrical resistance, which is lower when ambient temperature rises, is able to react in a timely manner using electrical equipment or charging equipment to control internal disruptions and stop charging; u1 is a circuit protection chip and u2 is two reverse mosfet switches。
Co and do of panel u1 in normal condition both output high voltage, both mosfet are open and batteries are free to charge。
Overcharge protection: when u1 detects battery voltage reaching the limit of charge protection, co tube foot output low level, mos pipe switch 2 is converted from conduit to shut down, recharge circuits are shut down and chargers are no longer able to charge batteries, thereby achieving overcharge protection。
Overcharge protection: during battery discharge, when u1 detected that battery voltage was below the release protection door limit, do foot was converted from high to low level, and mos pipe switch 1 was shut down, rendering battery discharge impossible; the battery voltage could not be reduced further under the discharge protection status, requiring the protection of circuits to have minimal currents and control of circuits into low utility。
Overflow protection: under normal circumstances, the battery discharges the load, the current passes through two chained mos tube switches and the vm tube foot detects a voltage-relief voltage of u for two mos tubes. If the load causes u abnormalities for some reason and increases the circuit current, when u is greater than a given value, the do tube foot is converted from high voltage to low voltage, and the mos pipe switch 1 is closed, thus rendering the discharge circuit current zero and thus having the effect of protecting the current。
If you need to address specific problems (in particular in the fields of law, medicine, etc.) you are advised to consult professionals in the relevant fields in detail。
