Many people will think, now new energy batteries are not practical lithium batteries? This is the case, whether it is zinc-air or sodium-sulfur, these batteries are power storage units, yet a considerable part of the initial power generation still depends on AGM start stop lead-acid batteries.
Can you envision that steam engines were invented in the 18th century, and several centuries have passed since then, and we still utilize them extensively. This is surely a "groundbreaking technology" in transportation, but we have become habituated to it as time goes by. On the other hand, it also showcases the usefulness of this technology. In reality, technology is like this. AGM start stop Technologies such as 5G communication that seem extraordinary now will be common in the future.
Following the advent of lead-acid batteries, they found application in automobiles during the 1890s. These batteries are capable of delivering the substantial current required to initiate the internal combustion engine—up to 500A for a duration of 5 seconds under frigid conditions. Furthermore, the complete electrical subsystem of vehicles powered by internal combustion engines is engineered to be sustained by AGM start stop 12V batteries when the engine is turned off. By the 1990s, the automobile industry started electrification. Hybrid cars still need lead-acid batteries. Now starting to enter the era of electric vehicles, lead-acid batteries still exist, many people will ask the electric vehicle so large a lithium battery also need lead-acid batteries?
Indeed, the powertrain of an electric vehicle comprises two distinct components. The first is a battery, typically a 12V lead-acid unit, while the second is the main power battery, which predominantly utilizes high-capacity lithium iron phosphate or ternary lithium batteries in today's market.
The primary energy source is invariably a sizable lithium battery. Yet, should this depleted power battery fail to operate, an intermediary—a relay—is necessary to activate it. This critical relay derives its power from a 12V low-voltage battery, with many such batteries still being lead-acid types. Fundamentally, the building block of a lead-acid battery is a cell; each cell is made up of a positive electrode, a negative electrode, and a separator that lies between them.
A layer of brown lead dioxide attached to the surface of the positive plate, this layer of lead dioxide is composed of lead particles combined with oxidation, between these particles can freely pass through the electrolyte, the reason for grinding the positive material into fine particles is that it can increase the contact area with the electrolyte, which can increase the area of reaction, thus reducing the internal resistance of the battery.
The negative plate is a spongy lead plate with a dark gray color. The electrolyte is a dilute aqueous sulfuric acid solution with a concentration of 27% ~ 37%. The two electrodes are placed in parallel as close as possible to ensure that they are not in contact, and then a separator composed of insulating materials is added between the two electrodes. This kind of separator is covered with small holes, which can not only ensure the passage of the electrolyte, but also prevent the contact between the two electrode plates.
The types of partitions are roughly divided into synthetic resin fiber partitions and glass fiber partitions. Upon applying a load across the terminals of the battery, electrons commence their flow in the external circuit, thereby generating an electric current. Concurrently, within the confines of the battery, chemical energy undergoes transformation into electrical energy. This transition occurs as ions traverse from one electrode to its counterpart. During discharge, the positive electrode undergoes a reduction reaction, donating electrons to the external circuit. In a complementary process, the negative electrode undergoIn a complementary process, the negative electrode undergo, shedding electrons that the electrolyte plays an indispensable part by offering a nurturing liquid milieu that enables the unhindered passage of ions from the positive to the negative electrode and vice versa. This action renders the electrolyte as the conduit for ion transit, ensuring the continuous flow of electrical energy within the battery.
As we conclude our exploration of AGM lead-acid batteries, it is evident that they represent a critical juncture in the evolution of automotive power solutions. These advanced batteries not only pay homage to the long-standing legacy of lead-acid technology but also ensure that the core values of reliability and robustness are carried forward into the contemporary landscape of hybrid, electric, and intelligent vehicles. The integration of AGM technology has guaranteed that lead-acid batteries continue to be relevant, enhancing both the performance and lifespan of power systems that drive us into the future.