What are the phenomena of short circuit of lead acid battery

Low open-circuit voltage and closed-circuit voltage.

Discharge. The termination voltage is quickly reached.

When a high current is discharged, the terminal voltage rapidly drops to zero.

When the circuit is opened, the electrolyte.

The density is very low, and the electrolyte freezes at low temperatures.

When charging, the voltage rises slowly and remains low throughout.

Sometimes it drops to zero.

When charging, the electrolyte temperature rises very high and very quickly.

When charging, the electrolyte density rises slowly or almost non-existently.

No bubbles or bubbling appear late when charging.

caused by lead-acid batteries.

The main causes of internal short circuit are as follows:

The quality of the separator is not good or defective, so that the active material of the plate passes through, resulting in virtual contact or direct contact between the positive and negative plates.

The separator is positioned so that the positive and negative plates are connected.

The active material on the plate expands and falls off, and the positive and negative plates are connected due to the excessive deposition of the active material that falls off, resulting in the contact between the lower edge or the side edge of the positive and negative plates and the sediment.

A conductive object falls into the battery, causing the positive and negative plates to connect.

Formed when welding pole groups.

Lead flow. Not exhausted, or when assembled.

Lead beans. It exists between the positive and negative plates, and the separator is damaged during the charging and discharging process, causing the positive and negative plates to be connected.

1. The short circuit is generally a problem with the separator of the battery, and the separator needs to be replaced; 2. When the battery busbar is welded, there are lead particles that cause a short circuit between the positive and negative electrodes of the battery, which should be cleaned up. 3. It may be that the partition is channeled upward, causing a short circuit at the bottom and returning the partition to its original position.

Hazards of battery short circuit:

1. The battery itself discharges quickly, and the battery is damaged and fails due to overheating.

2. The short-circuit device is burned out due to excessive current.

3. High-power batteries can also cause fire, etc.

A short circuit in a battery, an abnormal path that causes the positive and negative poles of the battery to connect to each other with very little resistance due to some reason. This path generates very large currents (i=u r) and also generates a lot of heat (q=, the heat generated and the excessive power release can cause severe damage to battery life.

1. Lead-acid battery leakage will cause corrosion to the surrounding environment and UPS equipment, and seriously pollute the on-site environment.

2. The leakage of lead-acid battery will cause corrosion of the terminal post of the empty seepage pool of the storage battery, and there will be a risk of thermal runaway, which will lead to the increase of the internal resistance of the battery and the subsequent reduction of the electrolyte, which will affect the battery capacity and make it difficult to ensure the long-term use of the battery.

3. The leakage of the battery affects the normal operation of the whole battery pack, and may also cause power outages and cause incalculable accidents.

4. Battery leakage is easy to cause, and someone should always monitor the operation status of the battery unit to avoid causing greater safety threats.

Hello!Dear, the question you consulted is here to give you the following answers: common battery faults include internal faults and external faults.

Failure of the outer reed finch call: shell crack, pole corrosion, pole loosening, dry cracking of the sealant. Internal Failures:

Plate vulcanization, active material shedding, plate grid corrosion, plate short circuit, self-discharge, plate arching.

It should be investigated one by one from the man, machine, material, method and environment, and the short-circuit battery can be dissected and analyzed, the main cause can be found, and the problem point can be improved.