Functions and faults of lithium battery protection board
What is the lithium battery protection board?
The role of the lithium battery protection board many people do not know, lithium battery protection board, as the name suggests is to protect the lithium battery, the role of the lithium battery protection board is to protect the series lithium battery pack charge and discharge. Protect the battery is not discharged, not charged, not current, there is output short circuit protection. Main functions: overcharge protection function, over discharge protection function, short circuit protection function, over current protection function, over temperature protection function, equalization protection function. It effectively improves the charging effect in series charging mode, and detects the over-voltage, under-voltage, over-current, short-circuit and over-temperature status of each single cell in the battery pack to protect and extend the battery life. The under-voltage protection makes each single battery avoid damage to the battery due to over-discharge when it is used in discharge.
What is the function of lithium battery protection board?
It is an electronic circuit control board, it is responsible for supervising and controlling the protection of the voltage of each battery in the battery pack to prevent over-discharge and over-charge, because the battery pack is connected in series and parallel, a group of which the current is the same when charging the battery in series, if the capacity of several batteries is not the same, when charging, when one is full, the other is not full, if you charge again, then the full section is over-charged, so Simply measuring the total voltage of the series-connected batteries to reflect the full battery is incorrect. It will accelerate the damage of an unbalanced battery. Therefore a control board is needed to monitor each battery.
What are the common failures of Li-ion battery protection board?
1、No display, low output voltage, can't carry load
2、No charging
3、No internal resistance, large internal resistance
4、No resistance
5、Large overcurrent
6、No decoding
Battery protection board is a very important component of lithium battery pack, before installing the protection board we need to carry out professional testing of the lithium battery protection board to ensure that it can work properly, ACEY production of lithium BMS tester can easily solve the above problems for you.
Multi-string protection board special tester is mainly used to test whether the functional indicators of the power battery protection board are within the parameters, so as to provide a set of testing standards to the staff, mainly for the protection board manufacturers and power battery manufacturers of power battery protection board testing. It is applicable to various hardware solutions and part of the software solutions for protection board testing.
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