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2023

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What is a new energy vehicle battery

Classification:


【概要描述】New energy vehicle batteries can be divided into two categories, namely batteries and fuel cells. Batteries are suitable for pure new energy vehicles and can be classified into types such as lead-acid batteries, nickel based batteries (nickel hydrogen and nickel metal hydride batteries, nickel zinc batteries), sodium ion batteries (sodium sulfur batteries and sodium nickel chloride batteries), secondary lithium batteries, air batteries,

New energy vehicle batteries can be divided into two categories, namely batteries and fuel cells. Batteries are suitable for pure new energy vehicles and can be classified into types such as lead-acid batteries, nickel based batteries (nickel hydrogen and nickel metal hydride batteries, nickel zinc batteries), sodium ion batteries (sodium sulfur batteries and sodium nickel chloride batteries), secondary lithium batteries, air batteries, etc. Fuel cells are specifically designed for fuel cell new energy vehicles and can be divided into alkaline fuel cells (AFC), phosphate fuel cells (PAFC), molten carbonate fuel cells (MCFC), solid oxide fuel cells (SOFCs), proton exchange membrane fuel cells (PEMFCs), direct methanol fuel cells (DMFCs), and other types.

There are slight differences with the types of new energy vehicles. In pure new energy vehicles equipped only with batteries, the role of batteries is the only power source for the vehicle's driving system. In hybrid vehicles equipped with traditional engines (or fuel cells) and batteries, the battery can play a role as both the main power source of the vehicle's driving system and an auxiliary power source. It can be seen that at low speeds and start-up, the battery plays the role of the main power source of the car's driving system; Acting as an auxiliary power source during full load acceleration; It plays a role in storing energy during normal driving, deceleration, and braking.

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Characteristics of New Energy Vehicle Batteries

Lithium batteries are a general term for chemical power sources that use metallic lithium or lithium containing substances as negative electrodes. It is a new type of high specific energy battery system that has been developed in the past decade. The idea of using active metals such as lithium and sodium as negative electrodes for batteries was first proposed by a researcher born in 1958 at the University of California in the United States. In the 1970s, Yasuro Fukuda of Panasonic Electric Company in Japan first invented and applied lithium fluoride carbon batteries. From then on, lithium batteries gradually moved from experimental research to practicality and commercialization. Due to the excellent performance of lithium batteries, various countries are competing to develop various new types of lithium batteries to meet military and consumer needs, such as lithium iodine batteries (1972), lithium chromate batteries (1973), lithium sulfur dioxide batteries (1974), lithium sulfite chloride batteries (1974), lithium copper oxide batteries (1975), lithium manganese dioxide batteries (1976), lithium molybdenum disulfide batteries (1989), lithium-ion batteries (1991), and lithium manganese dioxide batteries (1994). Especially in the early 1990s, the high specific energy and long life lithium-ion batteries invented and launched by Sony Energy Technology in Japan greatly promoted the development of the lithium-ion battery industry.

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