22 Years' Battery Customization
Dec 05, 2019 Pageview：3262
Colloidal battery is also a kind of lead-acid battery, the improvement of the ordinary lead-acid battery with liquid electrolyte, using colloidal electrolyte instead of sulfuric acid electrolyte, so as to improve the safety, power storage, discharge performance and service life. At present, colloidal battery is widely used in power generation, communication, automobile, emergency lighting and other fields, why is it so popular? Now let's analyze the technical principle of the colloidal battery and unveil its popularity.
Historical review
Lead-acid batteries have been widely used in various fields. After the ordinary lead-acid battery is used for a period of time, the electrolyte moisture decreases, leading to changes in the concentration of sulfuric acid. On the other hand, acid mist precipitates out during charging, causing certain harm to the environment and equipment. In order to lock the electrolyte firmly, the lead acid battery of colloidal electrolyte emerges at the right moment.
At first, the colloid lead battery was made of water glass electrolyte, which was directly added to the dry lead battery. In this way, the electrolyte was effectively "fixed" and the acid mist precipitation was reduced. However, the battery capacity was about 20% lower, so it did not develop. Until the 1980s, China gradually introduced the German sunshine company's colloidal battery, so that the colloidal battery has been widely concerned.
Gel cell definition
Generally speaking, the lead acid battery with colloidal electrolyte is usually called a colloid battery. The simplest method is to add gelling agent in sulfuric acid to change the sulfuric acid electrolyte into a colloidal state.
The difference between colloidal batteries and ordinary lead-acid batteries, from the initial understanding of electrolyte gel, further development to the electrochemical characteristics of the electrolyte infrastructure, as well as the application and promotion of the grid and active substances. For example, the non-solidified water colloid belongs to the same colloid battery in terms of its electrochemical classification structure and characteristics. In addition, if the polymer material is attached to the grid, commonly known as ceramic grid, it can also be regarded as the application characteristics of colloidal battery.
Colloidal battery working principle
The basic working principle of gel battery is the same as the ordinary lead-acid battery, but the battery in the silica gel is the SiQ particle as a skeleton form three-dimensional porous mesh structure, it will bag inside, electrolyte after perfusion of silicon sol to gel electrolyte, skeleton further contraction, the gel cracks through between the positive and negative plate, gives the positive precipitation of oxygen to the cathode channel. It is not difficult to see that the colloidal battery and AGM battery sealing principle is the same, the difference is that the electrolyte "fixed" way and provide oxygen to reach the negative channel is different.
Colloidal battery characteristics
Ⅰ. High quality, long service life
The colloidal electrolyte can form a solid protective layer around the electrode plate to avoid the damage of the electrode plate caused by vibration or collision and prevent the electrode plate from being corroded. At the same time, it also reduces the bending of the electrode plate and the short circuit between the electrode plates when the battery is under heavy load. The service life of the battery is twice that of the ordinary lead-acid battery.
Ⅱ, safe environmental protection
The colloid battery electrolyte is solid, sealing is not easy to leak; During use, no acid mist precipitation, no electrolyte leakage, no pollution to the environment. Colloidal cells have strong power storage capacity, which is usually used in common solar street lamps
Ⅲ. Deep discharge cycles
After deep discharge, the colloid battery can be fully charged with a capacity of 100% under the condition of timely replenishment, which can meet the needs of high frequency and deep degree discharge.
To adapt to the strong Ⅳ. Temperature
Because of sulfuric acid electrolyte exists in colloid, its internal resistance is bigger, but not at low temperature gel electrolyte resistance changes, so its low-temperature startup performance is good, can be in to 40 ℃, 65 ℃ temperature range.
Less Ⅴ. Self-discharge, storage duration
The colloid electrolyte can hinder the water diffusion and inhibit the PbO spontaneous reduction reaction, with less self-discharge. Good plate sulphation and reduce board gate corrosion resistance, at 20 ℃ storage at room temperature for two years, without charging in operation.
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