Technical Principle Analysis of Small Improvement and Great Improvement Colloidal German Sunlight Battery

Colloidal German sunlight battery is also a kind of lead-acid battery. It is an improvement of common lead-acid battery with liquid electrolyte. Colloidal electrolyte is used instead of sulfuric acid electrolyte, which improves the safety, storage capacity, discharge performance and service life. At present, colloidal German solar cells are widely used in power generation, communications, automobiles, emergency lighting and other fields. Why is it so popular? Next, we will analyze the technical principle of German solar gel battery and uncover its red veil.
Review of the History of Batteries
Lead-acid batteries have been widely used in various fields since they came out.  After using ordinary lead-acid batteries for a period of time, the reduction of water content in electrolyte leads to the change of sulfuric acid concentration, and the maintenance of adding water in later period is cumbersome. On the other hand, acid mist precipitation during charging process causes certain harm to the environment and equipment. In order to lock the electrolyte firmly, German sunlight batteries with colloidal electrolyte emerged at the historic moment.
At first, colloidal solar batteries used sodium silicate as electrolyte, which was directly added to dry lead-acid batteries. This effectively "fixed" the electrolyte and reduced acid fog precipitation, but the capacity of the batteries was about 20% lower, so it did not develop. It was not until the 1980s that colloidal batteries attracted widespread attention because of the gradual introduction of German sunlight batteries into China.

Definition of colloidal batteries
Generally speaking, lead-acid batteries with colloidal electrolyte are usually called colloidal batteries. The simplest way is to add gelling agent in sulfuric acid to make sulfuric acid electrolyte colloidal.
The difference between colloidal batteries and ordinary lead-acid batteries has been further developed from the initial understanding of electrolyte gelation to the electrochemical characteristics of electrolyte infrastructure and its application in grids and active materials. For example, non-solidified hydrocolloids belong to colloidal batteries from the point of view of electrochemical classification structure and characteristics. In addition, if polymer materials are attached to the grids, commonly known as ceramic grids, they can also be regarded as the application characteristics of colloidal batteries.
Working Principle of Colloidal Battery
The basic working principle of colloidal battery is the same as that of ordinary lead-acid battery, but the silicon gel in its battery is a three dimensional porous network structure made up of SiQ particle as skeleton. It will wrap the electrolyte in the interior. When the electrolyte of silicon sol is changed into gel, the skeleton will shrink further, so that the gel will crack through the positive and negative plates, and it will provide negative oxygen to the positive electrode. Polar passage. It is not difficult to see that the sealing principle of German solar gel battery and AGM battery is the same, the difference is that the "fixed" way of electrolyte and the way of providing oxygen to reach the negative channel are different.
Characteristics of colloidal German solar battery
I. High quality and long life
Colloidal electrolyte can form a solid-state protective layer around the plate to avoid damage caused by vibration or collision, and prevent the plate from being corroded. It also reduces the bending of the plate and the short circuit between the plates when the battery is used under heavy load. The service life of the battery is twice as long as that of the ordinary lead-acid battery.
II. Safety and Environmental Protection
The electrolyte of colloidal solar cell is solid, and its sealing is not easy to leak. In the process of using, there is no acid fog precipitation, no electrolyte leakage, and no pollution to the environment.

Colloidal batteries have a strong storage capacity. The common solar street lamps usually use colloidal batteries to store electricity.
III. Strong cyclicity of deep discharge
After deep discharge, the capacity of sunlight battery can be recharged by 100% in case of timely replenishment, which can meet the needs of high frequency and deep discharge.
IV. Strong Temperature Adaptation
Because the sulfuric acid electrolyte exists in the colloid, its internal resistance is slightly larger, but it does not change much at low temperature, so its low temperature start-up performance is good, and it can be used in the temperature range of - 40 C - 65 C.
V. Low self-discharge and long storage time
Colloidal electrolyte can inhibit the diffusion of water and the spontaneous reduction of lead oxide, and has less self-discharge. It has good resistance to sulfation of plate and reduces the corrosion of grid. It can be stored at 20 for 2 years at room temperature, and can be put into operation without charge.