The principles of NiMH No.7 battery and fuel-powered NiMH No.7 battery

　　Lithium battery is a kind of energy storage technology equipment. Currently, lithium battery can be divided into lithium iron phosphate battery (lfp), ternary (ncm) rechargeable battery and lithium manganate (LMO) battery. Taking lithium iron phosphate battery as an example, the lithium-ion battery, lithium-ion battery and negative battery in the charge and discharge stages, as well as the electronic devices transferred from the lithium-ion battery and its external power circuit are integrated into the lithium-ion battery, and the negative battery, lithium-ion battery and the electronics are transferred to the positive battery.

　　However, the material-powered lithium battery is a generator in which materials and reducing agents can be converted into electromagnetic energy through electrochemical corrosion without ignition. Therefore, the battery is not limited by the Carnot cycle and energy conversion efficiency. However, when power NiMH No.7 battery are used as electromagnetic energy conversion devices, their high efficiency can reach 60% even when used as thermoelectric engineering equipment. According to different electrolyte solutions, lithium-ion batteries are divided into alkaline batteries, ammonium sulfate natural material lithium-ion batteries, solid metal oxide natural material lithium-ion batteries, molten sulfide natural material lithium-ion batteries and proton exchange membrane natural material NiMH No.7 battery. . The different application temperatures of proton exchange membrane power NiMH No.7 battery range from indoor temperature to 80°C, which is the basis for application in natural power lithium battery vehicles. Taking the proton exchange membrane power lithium battery as an example, the positron CO2 and the electron component transmitted from the negative phase of hydroxyl radical ions and its external power circuit are melted in water, and the negative phase of hydrogen atoms is lost in the hydrogen and oxygen. Table 1 lists the basic concepts of lithium-ion batteries, power lithium-ion batteries, and cathode materials.

　　Key technical features of lithium-ion batteries and fuel-powered NiMH No.7 battery

　　Features

　　Lithium-ion cells and chemical changes in lithium-ion batteries have determined the reversible induced potential of rechargeable batteries. For electrochemical corrosion, it can be calculated as:

　　These include changes in the Gibbs activation energy of electrochemical corrosion under standard conditions. The changes in the Gibbs activation energy reflect the probability of occurrence of electrochemical corrosion. The size of the corrosion is determined by reflecting its characteristics, the concentration of products and reactants, and its reflected temperature. of. n is the number of moles of electronic device migrated per gram of molecule, and f is Faraday's constant. Under standard conditions, the reversible potential of lithium-ion batteries increases with temperature, and the reversible potential decreases with temperature. Due to the continuous changes in the structure of the cathode material throughout the process, the reversible inductance of the rechargeable battery is also changing, and the reversible inductance of the rechargeable battery is also related to the reaction level. However, Table 2 shows the characteristic curves of lithium-ion batteries and lithium-ion batteries.

　　specific energy

　　Pure electric vehicles are completely driven by battery charging and pay more attention to the tracking ability of the battery after charging, so it pays more attention to the specific energy of the battery. The increase in the specific energy of NiMH No.7 battery is limited to the basic theoretical shortcomings of lithium battery materials. At present, the cathode material of my country's power-driven lithium-ion batteries is mainly lithium phosphate (lfp), and graphite material is still the key material. Power lithium battery is a power generation device, which is far more than lithium battery. When the total mileage level matches the energy ratio, the top luxury pure electric car Tesla has a range of only 500 kilometers, while the typical Toyota Mila and Hyundai ix35 means that powered lithium-ion battery cars will have a range of more than 500 kilometers. Therefore, NiMH No.7 battery are better than NiMH No.7 battery at a specific energy level.

　　life expectancy

　　However, with the improvement of the application level of rechargeable batteries, the performance of lithium-ion batteries and lithium-ion batteries has declined. The start-stop acceleration and deceleration working state of the car accounts for a large part of the overall working state, causing the rechargeable battery to operate in a long-distance current range with a large current elastic coefficient, which will undoubtedly reduce the number of battery cycles. Therefore, scientific research on power lithium-ion batteries and lithium-ion battery life has become one of the most important issues.

　　cost

　　At present, the cost of China's lithium-ion battery system is 1,800 yuan/kWh, and the cost of lithium-ion battery pack is 5,000 yuan/kWh (excluding various components such as material systems in the system). For a small car, assuming it is a pure electric vehicle with 60kwh (60kwh), the cost is more than 10,000 yuan. If it is a lithium-ion battery car, its output power is 100 kilowatts (Toyota Mire is 114 kilowatt hours), and the cost of the reactor is as high as 500,000.

　　However, the current cost of lithium-ion batteries is significantly higher than that of lithium-ion batteries, which is a shortcoming that limits the development trend of lithium-ion batteries. It is generally believed that the high cost of lithium-ion batteries is the key due to the application of precious metal Pt. The calculated cost of specific Pt is as follows: The higher load level at this stage is: its electrical performance is 1600ma. The components used in the 100kw power lithium-ion battery system are as follows. The price of PT is calculated based on 500 yuan/g, and the cost of applicable PT is 50,020,833 yuan. The cost of a 100-kilowatt power lithium-ion battery exceeds 500,000 yuan, while the cost of batteries is only 4% of the fixed cost. However, because the current processing technology of raw materials and system software is not perfect, and with the development of commercialization, the cost of batteries must be greatly reduced. Therefore, the cost of power NiMH No.7 battery is the key.

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