Maintenance methods and common faults of lithium battery protection board. The extent of damage to the lithium battery protection panel depends on the extent of the damage and the value of the repair. Lithium battery protection plate, as the name suggests, is used to protect lithium batteries. The role of lithium battery protection board is to protect the battery over discharge, over charge, over current, but also protect the output short circuit. Lithium battery protection board damage how to repair?
If the protection plate of a lithium battery is broken, you can charge it with a charger first to see if you can activate the protection plate. If you can‘t fill it, it must be broken. May be the electronic component damage, may also be just reset! But if the protection plate is broken, the measurement should be 0V. If you have contact with lithium battery protection board, then to discuss why lithium battery protection board does not have charge and discharge protection, hope to give you some useful help.
Lithium battery protection board under what circumstances does not charge and discharge protection?
Let‘s start with the ternary parameters: lithium and iron are 2.8 ~ 4.25 and 2.5 ~ 3.65 V, respectively.
1. It may be voltage overcharge, overdischarge, overcurrent, short circuit or overtemperature.
2. Use a multimeter to check whether the charge and discharge MOS tube is open.
3. If the lithium battery protection board is equipped with LED, when the charge and discharge cannot be performed, the LED will blink for 0.5 seconds.
4. If the lithium battery protection board is equipped with a host computer, connect the host computer to check the protection status.
5. The lithium battery protection plate is equipped with a weak spot switch. Please check whether the weak spot switch is on.
In these cases, you can check the following methods to fix:
1. Over charge, over discharge, over current, short circuit plug into the charger for recycling.
2. The overcurrent is disconnected and the load recovers
What is lithium battery protection panel?
Lithium battery protection plate is the charge and discharge protection of series lithium battery pack. After being fully charged, the voltage difference between individual batteries can be ensured to be less than the set value, so that all individual batteries of the battery pack can be charged evenly, effectively improving the charging effect in series charging mode. At the same time, the state of overvoltage, undervoltage, overcurrent, short circuit and overtemperature of each battery in the battery pack is detected to protect and extend the service life of the battery. Undervoltage protection prevents each battery from being damaged by excessive discharge during discharge.
The protection function of lithium battery is usually completed by the protection circuit board and current devices such as PTC. The protection board is composed of electronic circuits, which can accurately monitor the voltage of the cell and the current of the charge and discharge circuit at any time under the environment of -40 to 85, and timely control the on-off of the current circuit. PTC prevents battery damage at high temperature.
The common lithium battery protection plate usually includes control IC, MOS switch, resistor, capacitor and auxiliary device fuse, PTC, NTC, ID, memory, etc. Among them, the control IC in all normal circumstances to control the MOS switch on, so that the cell is connected to the external circuit, when the voltage or circuit current exceeds the specified value, immediately control the MOS switch off, to protect the safety of the cell.
Principle of lithium battery protection board:
Lithium batteries (rechargeable) need protection because of their own characteristics. Due to the material of lithium battery itself, it can not be overcharged, overdischarged, overcurrent, short circuit and ultra-high temperature charge and discharge, so lithium battery components always appear a delicate protection plate and a current fuse.
The protection function of lithium battery is usually completed by the protection circuit board and current devices such as PTC. The protection board is composed of electronic circuits, which can accurately monitor the voltage of the cell and the current of the charge and discharge circuit at any time under the environment of -40 to 85, and timely control the on-off of the current circuit. PTC prevents battery damage at high temperature.
The common lithium battery protection plate usually includes control IC, MOS switch, resistor, capacitor and auxiliary device fuse, PTC, NTC, ID, memory, etc. Among them, the control IC in all normal circumstances to control the MOS switch on, so that the cell is connected to the external circuit, when the voltage or circuit current exceeds the specified value, immediately control the MOS switch off, to protect the safety of the cell.
