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Shenzhen Green Power Energy Battery Co.,ltd specializes in a wide range of digital battery such as environmental cylindrical 18650 21700 32700 26650 14500 18500 lithium ion rechargeable battery, LifePO4 battery, 3.7V lithium polymer battery, NiMH battery, NiCD battery, dry cell battery, alkaline battery, heavy duty battery, button cell battery etc. we devote to R&D, innovation, production & sales. With automatic production machines we have been exported goods to all over the world over 15years. We have complete exported certificate such as KC, CE, UL, BSCI, ROHS, BIS, SGS, PSE etc
Dongguan Datapower New Energy Co.,ltd is a high-tech production enterprise which specialize in the R&D and production&sale of lithium polymer batteries,drone battery,airplane batteries &battery pack etc.
Anhui Seong-hee New Energy Technology Co.,ltd is a high-tech production enterprise which specialize in the R&D and production of primary batteries. And mainly produces and sells alkaline batteries & carbon zinc batteries. there are size AA, AAA, C, D, 9V etc
Guizhou STD Battery Co.,ltd is a high-tech production enterprise which specialize in the R&D and production & sale of lithium polymer batteries, drone battery, airplane batteries & battery pack etc.
release time:2023-02-22 Hits: Popular:AG11 battery
In chemical batteries, chemical energy can be directly transformed into electrical energy. It is the result of the spontaneous oxidation and recovery of chemical response from the battery. This response is performed on the two electrodes. The negative active substance consists of a recovery agent that is more negative and stable in electrolytes, such as zinc, cadmium, lead and other vivid metals and hydrogen or hydrocarbons.
Positive active substances consist of composed of a positive potential and stable oxidant in electrolytes, such as manganese dioxide, lead dioxide, nickel oxide and other metal oxides, oxygen or air, halogen and salt Essence Electrolytes are information with outstanding ionic conductivity, such as acid, alkali, salt water solution, organic or inorganic non -aquatic solution, melting salt or solid electrolyte. When the external circuit is disconnected, although there is a potential difference (opening voltage) between the North and South Pole, but there is no current, the chemical energy stored in the battery is not converted to electrical energy.
When the external circuit is closed, the current flows through the external circuit under the influence of the two electrode potential. At the same time, because there is no free electron in the electrolyte, the transmission of charge must be accompanied by the oxidation or recovery response of the North and South Activated substances and the electrolyte interface, and the material relocation of the response and the response products. The transfer of charge in the electrolyte must also be completed by the relocation of ions. Therefore, the normal charge transmission and material transmission process inside the battery are necessary conditions to ensure normal output power. During charging, the direction of the power transmission and mass transmission process inside the battery is exactly the opposite of discharge; the electrode response must be reversible to ensure the normal progress of the opposite direction and the power transfer process.
Therefore, the electrode response is necessary to constitute a battery. G is a free response to Gibbes (coke); F is Faraday frequency = 96500 library = 26.8 -An · hour; n is the number of battery reactions.
This is the fundamental thermodynamic relationship between the battery electromotive momentum and the battery response, and it is also the fundamental thermodynamic allocation of battery energy conversion power. In fact, when the current flows through the electrode, the electrode potential must violate the electrode potential of the thermodynamic balance. This phenomenon is called polarization. The larger the current density (the current passed by the unit electrode), the more severe the polarization.
The polarization phenomenon is one of the important reasons for the loss of battery energy. Because the electrolyte data that constitutes a lithium -ion battery are different, lithium -ion batteries are also divided into two types: polymer lithium -ion battery and liquid lithium ion battery. The positive and negative electrode data of the polymer lithium ion battery and liquid lithium ion battery are the same, the working principle of the battery is similar, and the electrolytes in the meantime are different. The polymer lithium battery is light quality, strong energy storage capacity, good discharge capacity, and can form various shapes, and the life is long. The electrolyte of the polymer lithium battery is solid electrolyte. Compared with the liquid electrolyte of liquid lithium -ion battery, the polymer lithium battery can form various shapes to improve the battery ratio.
By February 2019, the fire accident at the South Korean Energy Storage Power Station alone has now been high! The Ministry of Industry and Commerce and Energy of South Korea urgently closed more than 300 energy storage battery systems on the side of public business. Spontaneous combustion caused by electric vehicle power lithium batteries, especially the Tesla Models spontaneous combustion that recently generated in the underground garage in two seconds, causing several cars to be burned on the side of the side to sound the safety alarm clock: lithium battery energy storage The urgent needs of power stations to establish a sound skill specification and demonstration system to escort their sustainable development.
However, the energy storage system of the lithium battery energy storage system, which is developed quickly with the scale effect of electric vehicles, continues the characteristics of power lithium batteries in the inspection and test specifications: it has severe lithium batteries, batteryManagementSystem (BMS) and energy storage. PowerControlSystem (PCS) and new lithium battery system test specifications, but lack the useful detection and evaluation system for the lithium battery energy storage system that has been put into operation. The current situation has made colleagues in the industry realize that security is the primary bottleneck in the development of the energy storage industry. Modern Grid has a security guarantee system that conducts timed operation and detection of primary equipment. Lithium battery storage power stations are used as emerging things outside the power grid. The need to formulate its entire life cycle. Ensure the safe operation of modern power grids.
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