Repair methods and common faults of lithium battery protection plate
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2022/04/28 15:37:11
Repair methods and common faults of lithium battery protection plate. The damage of lithium battery protection plate depends on the damage to what extent, there is no maintenance value. Lithium battery protection plate, as the name implies is to protect the lithium battery, the role of lithium battery protection plate is to protect the battery but put, but charge, but flow, and is the output short-circuit protection. Lithium battery protection board is broken how to repair? And xiaobian go to see!
Lithium battery protection plate is broken how to repair and maintenance?
If the lithium battery protection board is broken, it can be charged with a charger first to see whether the protection board can be activated. If it doesn't fill, it's broken. It is possible that the electronic components are damaged, and it is possible to reset it! But if the guard is broken, it should be 0V. If you have contact with lithium battery protection plate might as well discuss why lithium battery protection plate no charge and discharge protection, I hope to bring you some useful help.
What are the conditions of lithium battery protection plate without charge and discharge protection?
First look at the ternary parameters: the conventional is 2.8 ~ 4.25, iron lithium is 2.5 ~ 3.65V
1. The voltage may be overcharged, overdischarged, overcurrent, short circuit, or overtemperature.
2. Use a multimeter to check whether the charge/discharge MOS tube is on
3 if the lithium battery protection plate is with LED, can not charge and discharge is LED flashing 0.5 seconds alarm
4. If the lithium battery protection board is equipped with a computer, it can be connected to the upper computer to check the protection status
5. Lithium battery protection plate is equipped with a weak switch. Please check whether to turn on the weak switch
In these cases, you can view the following maintenance methods:
1. Overcharge, overdischarge, overcurrent, or short circuit are inserted into the charger to recover
2. Overcurrent disconnect load recovery
What is lithium battery protection plate?
Lithium battery protection plate is a series of lithium battery charge and discharge protection; When fully charged, it can ensure that the voltage difference between each single battery is less than the set value to realize the uniform charging of each single battery, which effectively improves the charging effect under the series charging mode. At the same time, detect the overvoltage, undervoltage, overcurrent, short circuit, and overtemperature of each battery string to protect and prolong the battery life. Undervoltage protection prevents each single battery from being damaged by overdischarge.
Principle of lithium battery protection board: lithium battery (rechargeable) needs protection, is determined by its own characteristics. Because the material of lithium battery itself determines that it can not be overcharged, overdischarged, overcurrent, short circuit and super high temperature charge and discharge, so lithium electric components will always follow a delicate protection plate and a current insurance device.
The protection function of lithium battery is usually completed by the protection circuit board and current devices such as PTC, the protection plate is composed of electronic circuit, in the -40℃ to +85℃ environment at the time of accurate monitoring of the voltage of the cell and the current of the charging and discharging loop, timely control of the current loop on and off; PTC protects batteries from severe damage at high temperatures.
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 controls the MOS switch conduction under all normal circumstances, so that the cell and the external circuit conduction, and when the cell voltage or circuit current exceeds the specified value, it immediately controls the MOS switch off, to protect the safety of the cell.
What are the common faults of lithium battery protection plate?
1, no display, output voltage low, no load
2. Don't charge
3, no internal resistance, internal resistance
4, no resistance
5, the flow is large
6, do not decode
The above is the method of repair and maintenance of the broken lithium battery protection plate, as well as some common faults. Lithium battery is a very practical use in our lives a cell type, and for the lithium battery, its serial battery to charge and discharge protection is called a lithium battery protection board, shoulder the important mission, the safety of the battery itself, the performance and quality and battery performance and quality of an important factor.
This article is posted on Battery Community by Lankway Electronics Technology
Address: https://dianchishequ.com/20224577
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