Energy storage battery is an indispensable storage energy energy component of solar photovoltaic power generation system. Its main function is to store the power of photovoltaic power generation system and supply power to the load in the case of insufficient sunshine, nighttime and emergency. Commonly used energy storage batteries are lead-acid batteries, alkaline batteries, lithium batteries, super capacitors, which are used in different occasions or products, the most widely used in lead-acid batteries, from the 1850s) developed so far, has There are more than 160 years of history, currently derived from a lot of types, such as rich liquid lead acid batteries, VRLA batteries, colloidal batteries, lead carbon batteries. The fastest growing lithium battery, there are lithium iron phosphate batteries and three yuan lithium battery (nickel cobalt manganate LiNiCoMn).
Lead-acid batteries are lead and lead dioxide as the battery anode and cathode active material, dilute sulfuric acid as the electrolyte of the chemical energy storage device, with high energy conversion efficiency, long cycle life, high voltage, high security, cost-effective, Installation and maintenance of simple features, is currently all kinds of energy storage, emergency power supply, start the preferred chemical power plant. The main components of lead-acid batteries include:
1) plate: positive and negative plates are coated with a special alloy plate on the active material obtained by the electrode in the charge and discharge storage and release of energy to ensure that the battery capacity and reliable performance;
2) partition: is placed in the middle of the battery positive and negative isolation media to prevent the battery directly and directly contact with the short circuit of the device, different types of lead-acid battery separator material is different from the main valve to AGM, PE, PVC mainly;
3) electrolyte: lead-acid battery electrolyte is prepared with distilled water dilute sulfuric acid, electrolyte in the charge and discharge play between the positive and negative ions to play the role of ions, and thus the electrolyte must be no impurities;
4) Containers (battery cover): battery covered containers, electrolytes and plates are in the container, the main support role, while preventing internal material spill, external substances into the internal structure of polluting the battery.
Lead-acid battery works by electrochemical reaction, electrical energy and chemical energy between the mutual conversion, the electrode is mainly made of lead and its oxide, the electrolyte is a sulfuric acid solution of a battery. English: Lead-acid battery Discharge state, the main component of the cathode is lead dioxide, the main component of the negative lead; charge state, the main components of the positive and negative are lead sulfate. (FLA, flooded lead-acid), VRLA (Valve-Regulated Lead Acid Battery), VRLA (VRLA), VRLA (VRLA), VRLA (VRLA), VRLA (VRLA), VRLA (VRLA) Lead carbon storage batteries and so o