What are the causes of faulty self discharge of batteries?

Self-discharge is an unavoidable phenomenon caused by the construction of the battery. There are many reasons for faulty self-discharge, mainly in the following aspects: (1) The electrolyte contains too many impurities.

These impurities form a local battery around the plates and produce self-discharge. For example, when the electrolyte contains 1% iron, the battery will be discharged throughout the day and night. (2) Self-discharge caused by short circuit inside the battery.

If the partition or the partition wall of the shell is broken, and a large amount of active material of the plate is detached and deposited in the lower part of the plate, it will cause a short circuit of the positive and negative plates and cause self-discharge. (3) The battery cover is sprinkled with electrolyte. After the electrolyte is covered with dust to form an acid sludge, the positive and negative electrodes will be connected and cause self-discharge, and at the same time, the pole will be corroded.

1.The battery is stored for a long time, and the sulfuric acid sinks, which causes the potential difference between the upper and lower parts of the plate, causing self-discharge. The electrolyte spilled from the battery accumulates on the surface of the battery cover, creating a pathway for positive and negative polarity.

2.The electrolyte is impure, the material of the battery plate is not pure, and the potential difference between the impurities and the plate and between the different impurities that are attached to the plate is formed, and the partial discharge is generated through the electrolyte.

3.The active material of the battery plate falls off, the lower part of the deposit is too much to short-circuit the plate, and the battery electrolyte is layered up and down to cause self-discharge.

The reason for the battery self-discharge failure is the long-term storage of the battery, the impurity of the electrolyte, and the detachment of the active material of the battery plate, and the following are the specific reasons for the battery self-discharge failure in the Xun Jian Hall: Long-term storage of the battery: The battery is stored for a long time, and the sulfuric acid sinks, resulting in the potential difference between the upper and lower plates, resulting in self-discharge.

The electrolyte from the battery spills up on the surface of the battery cover, causing the positive and negative electrodes to form channels. Impure electrolyte: The electrolyte is impure, the material of the battery plate is impure, and the potential difference between the impurities and the plates and the hidden impurities deposited on the plates is formed, resulting in partial discharge through the electrolyte.

The active material of the battery plate is detached and withered: too much sediment in the lower part causes the plate to short circuit, and the battery electrolyte is layered up and down, resulting in self-discharge.

Regular charging and discharging is also called checking discharge, on the friends digging hall is the floating charge operation of the battery, after a good hidden time to make the material of the plate to carry out a larger charge and discharge reaction, in order to check the battery capacity, and can find the aging battery, timely maintenance treatment, in order to ensure the normal operation of the battery, regular charging and discharging is generally not less than once a year.

Read more. The device that converts chemical energy into electrical energy is called a chemical battery, which is generally referred to as a battery. After discharge, the internal active material can be regenerated by charging - storing electrical energy as chemical energy; When an electric discharge is required, the chemical energy is converted into electrical energy again.

This type of battery is called a storage battery, also known as a secondary battery.

As long as the positive and negative electrodes are connected and there is resistance, it will discharge itself.

1. Because the electrolyte and plate contain impurities, a local small battery is formed, and the two poles of the small battery form a short-circuit circuit, and the current in the short-circuit circuit is regenerated to cause self-discharge.

2. Due to the different densities of the upper and lower electrolytes, the size of the electromotive force above and below the plates is unequal, so the equal voltage between the upper and lower plates of the positive and negative plates also causes the self-discharge of the battery. It aggravates with how old the battery is.