How does the lithium battery shield activate?

What is lithium battery protection plate?

Lithium battery protection board is the charge and discharge protection for the series lithium battery pack; when fully charged, it can ensure that the voltage difference between each unit battery is less than the set value (generally ±20mV), and realize the equalization of each unit of the battery pack. , effectively improving the charging effect in the series charging mode; simultaneously detecting the overvoltage, undervoltage, overcurrent, short circuit, and overtemperature conditions of each single cell in the battery pack, protecting and extending the battery life; undervoltage protection enables each A single battery prevents damage to the battery due to overdischarge during discharge.

There are two main parts of the finished lithium battery composition, lithium battery core and protective plate, lithium battery core mainly consists of positive plate, diaphragm, negative plate, electrolyte; Positive plate, diaphragm, negative plate winding or lamination, packaging, perfusion electrolyte, packaging is made into a core, the role of lithium battery protection plate many people do not know, lithium battery protection plate, as the name implies is to protect lithium batteries. of, the role of the lithium battery protection plate is to protect the battery but put, but fill, but the flow, and there is also output short circuit protection.

Why do some lithium plates need to be activated?

Now not all lithium battery protection panels need to be activated, but some protection ICs need to be activated, and this is the old IC scheme, the old IC scheme, so this needs to be done so that the protective plates do not work to reduce electrostatic discharge energy., So the lithium battery can be stored longer. This is why the design needs to be recharged and activated.

The field effect transistor used in the lithium battery protection plate is used as a protection element. In order to ensure that the battery will not be reconnected to the circuit in the event of an anomaly, the circuit is specially designed. The method is to protect the power supply of the control part of the circuit is to protect the power supply behind the utility tube, and the circuit will only work after the protection tube is normally turned on. Therefore, at the time of first use or after the protection has been generated, because the power supply of the subsequent circuit is disconnected, the circuit has no power, and the protection circuit can not work. There's no battery output. At this time, the battery can only be used properly if the battery is connected to the charger and the charger is used to supply power to the control circuit of the protective circuit.

How does the lithium battery shield activate?

If the protective plate may need to be recharged or activated after the load is completely disconnected due to current limiting protection, it is relatively troublesome, but it is also possible to touch B- (battery negative) and P- (discharge negative) short. Protection will be released. Remember to remember not to bring a large load (such as turning the bar until it is twisted) when you touch it for a short time. Otherwise, there may be a big spark. This basic reason is that the two ends of the discharge MOS after protection form a large pressure difference. A short touch is to reset the D-S level of the discharge MOS directly to 0V, and the protection is released at this time.

The page contains the contents of the machine translation.