Lithium battery cannot be charged or discharged

Lithium battery packs in pure electric vehicles cannot be charged during charging. The reasons can be divided into: wrong connection of the charging head or common faults of the charging head; the maintenance of the weatherboard or the invalidity of the lithium battery protection board; the internal short circuit of the lithium battery group to the high-power electrical appliances

After solving the safety hazard, check in turn: whether the charging head is connected incorrectly, whether the positive and negative power plugs of the lithium battery pack are connected incorrectly; eliminate the maintenance of the lithium battery protection board of household appliances, restart the MOS tube, and accurately measure whether the MOS tube has the driver working voltage; Check for disconnected wiring. The lithium battery group of pure electric vehicles cannot be charged and discharged normally during use. The reasons are as follows: the working voltage of the lithium battery group is low, the rain cover or the control panel is maintained; the rain cover or the control panel is damaged; the positive and negative stage charge and discharge connections are wrong; the line is disconnected or the power switch is not turned on. The above is the situation of lithium battery cannot be charged or discharged.