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Lead-acid power tool lithium battery base structure?

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Lead-acid power tool lithium battery base structure?

Release date:2017-12-29 Author: Click:

Base structure:


Positive and negative plates (1)


The plates of lead-acid power tools lithium batteries can be divided into four types according to the structure and the method of forming the active materials: paste-type plates, tube plates, chemical plates, and semi-chemical plates.


Paste plates (paste plates) consist of a grid and an active material.


The role of the grid is to support the active material and conduct the current so that the current is distributed evenly.


The grid material is generally lead-antimony alloy, and the lead-free calcium alloy is used for the protection-free battery.


The primary component of the positive electrode active material is lead dioxide, and the primary component of the negative electrode active material is flock lead.




Partitions (2)


The battery separator is made of microporous rubber, pigment glass fiber and other materials, and its primary role is:


Avoid shorting the positive and negative plates.


The positive and negative ions in the electrolyte pass smoothly.


Slow down the active material of the positive and negative plates to prevent the positive and negative plates from harm due to chatter.


Therefore, the separator is required to have a high porosity, a small pore diameter, acid resistance, no harmful impurities, a certain strength, a small resistance in the electrolyte, and a chemical stability characteristic.


Electrolyte (3)

The electrolyte is the primary component of a battery's > battery. Its role is to conduct electrical current and participate in electrochemical reactions.


The electrolyte is made of concentrated sulfuric acid and purified water (towards ionized water). The purity and density of the electrolyte have a primary effect on battery capacity and life.


Lead-acid batteries for passenger cars use electrolyte density of 1.280±0.005g/cm3 (25°C) dilute sulfuric acid.


Battery shell, cover (4)

The battery case and cover are the containers for the positive and negative plates and the electrolyte, and are generally made of plastic and rubber materials.


Exhaust plugs (5)

It is generally made of plastic material and acts as a seal to the battery, preventing air from entering and preventing plate oxidation. Together, the gas in the battery during the charge can be discharged out of the battery to avoid the risk of battery attack.


Before use: The blind hole in the vent plug must be pierced with wire to ensure smooth gas flow.


other:

In addition to the above components, the power tool battery includes components such as a chain (6), a pole (7), a saddle (8), and a level indicator.



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