Lithium battery manufacturers believe that the protective board is over -charging and kept keeping it. After the P-P-indirect discharge load of the protective board, although the control switch tube is turned off at this time, the front direction of the diode inside the diode is the same as the direction of the discharge circuit. Therefore When it was placed below 4.3V, the DW01 stopped charging protection status and the high voltage output at the 3rd foot, so that the over-charging control pipe in the 8205A was turned on, that is, the battery cell B-and the protective board P-re-connected again. The battery cells can carry out normal charging and discharge.

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Short-circuit protection control process: Short-circuit protection is an extreme form of over-current protection. Its control process and principles are the same as over-current protection. The short circuit is just equivalent to adding a resistor with a small resistance between PP-(about 0Ω) The load current of the protective board reaches more than 10A, and the protective board is immediately protected.

The role of lithium -ion battery protection board is to prevent lithium -ion battery from charging or excessive protection. There is a protective board to protect the battery itself well. If not, one isThe lithium -ion battery itself is easily damaged. The second is safety and danger. This is not a joke. Of course, those who do not use the protective board, because the internal resistance is small, the use time may be a little bit, and the price is cheaper, but I personally think that the safety is still heavy.

Settlement points for lithium ion battery protection board: In order to protect the life of the lithium-ion battery pack, it is recommended that the battery charging voltage should not exceed 3.6V at any time, that is, the protection voltage of the lithium-ion battery protection board is not higher than 3.6V. V, battery discharge protection voltage is generally more than 2.5V. It is recommended that the high voltage of the charger is 3.5 string. The larger the self -discharge, the longer the equilibrium time. Therefore, when choosing a lithium -ion battery protection board, try to choose 3.6V overvoltage protection, and start balanced on about 3.5V.

In short, the lower the internal resistance of the lithium -ion battery protective board, the better, the lower the more heated. The protection board's current is determined by the copper copper sampling resistance, but the continuous current capacity is determined by MOS.