Lifepo4 battery manufacturer Specialized in Energy Storage Battery since 2009.

Diagram of Inspection and Maintenance Method for Automobile Battery

by:dcfpower     2021-03-17

1. Clean the outside of the battery

>Check the fixation of the battery and the wire clamps of each pole

>Check that the battery shell should not be cracked And damage phenomenon

>Use a cloth to clean the external dust of the battery, remove the dirt and oxide on the pole head, clean the outside of the connection line and the chuck, and remove the dirt on the mounting frame.

2. Check the height of the battery liquid level

Use a glass tube with an inner diameter of 6-8mm and a length of about 150mm, vertically insert it into the filling port until Press the upper part of the tube with your thumb, and clamp the glass tube with your index finger and ring finger. The height of the electrolyte in the glass tube is the height of the electrolyte plane in the battery above the electrode plate, which should be 10 ~15mm.

3. Replenish the electrolyte

When the electrolyte level is too low, you should replenish distilled water or the battery replenisher sold on the market in time. Do not add tap water, river water or well water to avoid mixing Impurities cause self-discharge failure; do not add electrolyte, otherwise, the concentration of electrolyte will increase and shorten the service life of the battery. After adjusting the liquid level, the battery should be charged for more than 0.5 hours, so that the added distilled water can be mixed with the original electrolyte evenly.

4. Check the electrolyte specific gravity

>Measure the battery electrolyte specific gravity

>Correction of the electrolyte specific gravity

Specific gravity value u003d actual electrolyte specific gravity + 0.0007* (actual electrolyte temperature -15)

>Judging the discharge of the battery from the electrolyte specific gravity

>Adjust the specific gravity according to the temperature

5. Check the load voltage of the battery

>Measure the load voltage of the battery

>Judgment of technical status

General technical status is good When checking with a high-rate discharge meter, the single cell voltage should be stable above 1.6V or in the green area; if it is lower than 1.6V, it can still remain stable within 5 seconds, generally due to excessive discharge; if there is no voltage Display, or the pointer of the voltmeter quickly resets to zero, it means that the single cell or the entire battery has a short circuit, open circuit or other fault.

6. Use the charging method to check the technical condition of the battery

>normal state

>vulcanization state

>The active material falls off

>Self-discharge, supplementary charging of the battery in use

>Charging process

>Basic requirements for charging

Maintenance-free battery because of its normal charging voltage, the electrolyte only produces a small amount of gas, the plate has strong resistance to overcharge, and has small internal resistance, good low-temperature starting performance, and longer service life than conventional batteries In general, there is no need to add distilled water during the whole use period. Under normal conditions of the car charging system, it does not need to be removed from the car for supplementary charging. However, the specific gravity of the electrolyte should be checked during maintenance. Most maintenance-free storage batteries have a hole-shaped hydrometer on the cover, which changes color according to the change in the specific gravity of the electrolyte. When the hydrometer of the Fukang car battery is green, it means that the battery is fully charged; when it shows a 'dark' area, it means that the battery needs to be charged; when it shows a 'bright' area, it means that the electrolyte is too low and the battery has been scrapped and needs to be replaced.

7. Check the lights, signals and wiring harness conditions

8. Check the lights, signals and wiring harnesses

>Check and adjust the lights And signal display device;

>check and tighten the whole car line;

>check the whole car line joints, require clean, tidy, and reliable connection;

>Check the insulation layer of the whole car line;

>Check the fixation of the whole car wiring harness. The clamps should be complete, fixed and reliable, and there should be no looseness. .

9. Check the alarm signal

Check that each alarm signal lamp, sensor and connection should be intact. If damage or abnormal display is found, it should be repaired in time to ensure driving safety.

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