The battery is an important equipment in the automotive electrical system. If a failure occurs, a series of reactions will be caused in the automotive electrical system. Therefore, when conducting the electrical system fault diagnosis, it always first detects the battery, determines whether the battery is good, and whether it needs supplementary charging or replacement by testing. After determining the failure of the battery, other electrical appliances will be tested.

Common faults of battery are abnormal self discharge, insufficient storage capacity, too fast electrolyte loss, battery charging, plate vulcanization, active material falling off, internal short circuit and so on.

1. failure phenomenon

The external phenomena of all the common faults are shown in two cases: one is the terminal voltage is abnormal; the other is the two terminal voltage is normal, but it can not provide large current. When the starter works, the terminal voltage drops rapidly.

2. fault diagnosis

The battery should be regularly charged in the use of the battery in order to keep the battery working. With the improvement of the production technology of the battery, a new type of battery such as maintenance free battery has appeared, which makes it more convenient for the users to use the battery.

When judging the fault, we often use the instrument on the car or use the electric device on the car to carry on the inspection. General electric horn sound low or not sound, not bright, or dim light or starter powerless running does not turn the basic judgment is the battery failure.

The failure of the battery should be first judged by the external cause or by the internal cause, and then handled separately. The steps of the fault diagnosis are as follows:

The first check Baotou beiben external battery accessories are clean, especially the battery cover has no electrolyte or dirt accumulation, then check the connection line without the ground, short. Check, turn off the power switch, and a thick wire battery on the battery, and then a thin wire is connected with it, and then blow fire in the batteryremove thick wire pole. If there is a spark, should check the wire segments, find out the ground, short circuit; if there is no spark, then the fault in the internal battery.

Voltage and cell density measurements available high rate discharge meter and densimeter to judge the battery storage capacity.

The exclusion of Baotou beiben battery accessories internal fault, general repair should be battery overhaul or troubleshooting for desulphurization charging method. If a failure can not be excluded, a new battery will be replaced.

Check the voltage limit of the voltage regulator of Baotou Bei Ben heavy duty generator. If the voltage is high or low, it should be adjusted so as not to cause a new battery failure.