AA NiMH battery

AA NiMH battery market structure and AA NiMH battery energy density

AA NiMH battery manufacturers interpret the AA NiMH battery market structure and AA NiMH battery energy density. In recent years, my country's power lithium-ion batteries have developed rapidly, mainly due to the strong support of national policies for the new energy vehicle industry. my country's new energy vehicle industry has maintained rapid development. With its local advantages, the shipments of domestic lithium-ion power lithium battery companies have also increased significantly. The following AA NiMH battery manufacturers interpret the AA NiMH battery market structure and AA NiMH battery energy density.

AA NiMH battery market structure

In recent years, my country's new energy vehicle industry has maintained rapid development. With its local advantages, the shipments of domestic lithium-ion power lithium battery companies have also increased significantly. According to statistics, in 2018, the top four lithium-ion power lithium battery companies in my country accounted for 63% of the shipments. According to the market structure classification standard, it presents a concentrated oligopoly market with a relatively high concentration.

my country's AA NiMH battery market has maintained a high-speed growth, mainly driven by the high-speed growth of the power lithium battery market. In 2018, the output value of the top five companies in my country's power lithium battery market accounted for 71.60%, and the market concentration was further improved. With the gradual implementation of national policies, as well as the improvement of AA NiMH battery production technology, the reduction of costs, and the increase in the popularity of new energy vehicles and supporting facilities in the future, the demand for power lithium batteries for new energy vehicles will continue to rise, thereby promoting the expansion of the overall market size of the AA NiMH battery industry.

From the perspective of domestic AA NiMH battery application fields, the rapid development of power, energy storage and 3C industries has become an important driving force for the development of the AA NiMH battery industry. Among them, 3C lithium-ion batteries have risen slowly and their market share has continued to decline; power lithium-ion batteries have rapidly increased their market share due to the rapid increase in electric vehicle production and the steady increase in the penetration rate of lithium-ion batteries in electric bicycles; the construction of energy storage power stations has accelerated, and lithium-ion batteries have been gradually promoted in the field of mobile communication base station energy storage batteries, and the market share of energy storage lithium-ion batteries has grown from nothing.

The development of the global AA NiMH battery industry presents four major characteristics: first, the driving effect of power lithium batteries has emerged; second, the focus of industrial development has further shifted to my country; third, the pace of technological innovation has gradually accelerated; fourth, the intensity of industrial integration has continued to strengthen. The development trends of various countries are different. Japan's growth rate has begun to pick up, South Korea's growth rate has declined significantly, and my country has maintained a steady upward momentum.

Energy density of lithium-ion batteries

Under the condition of constant energy consumption, constant volume and weight of battery packs, which are strictly limited, the maximum single-trip mileage of new energy vehicles depends mainly on the energy density of batteries.

Industry insiders said that the current energy density of single cells of ternary lithium-ion batteries has reached its limit, and it is difficult to make a big breakthrough. To further improve the energy density of ternary lithium-ion batteries, the proportion of nickel in the battery must be further increased. However, after the proportion of nickel in the battery is increased, the thermal reaction inside the battery will be very intense due to the poor thermal stability of high nickel, and the safety issue is worrying.

Relying on the ternary battery technology route, it is very difficult to achieve the energy density of power lithium batteries to reach the goal of 350Wh/kg. Therefore, the industry hopes to further improve the energy density of batteries by relying on solid-state batteries.

In terms of single cells, the advantages of ternary soft packs are indeed obvious. Especially when comparing mass energy density, because the soft pack battery is structurally packaged with aluminum-plastic film, it is 40% lighter than the steel shell AA NiMH battery of the same capacity and 20% lighter than the aluminum shell AA NiMH battery. The ternary soft pack is safer, has a flexible size and is easy to arrange, and is also suitable for solid-state batteries. Therefore, there is also an upward trend in practical applications.

Behind the performance improvement is the accumulation of technology and the bold practice of innovation. As the earliest industrialized power lithium battery technology route, my country's mainstream lithium iron phosphate battery companies continue to innovate in battery cell design, material selection, process matching, production equipment, Pack lightweighting and other aspects. The lithium iron phosphate battery technology is constantly iterating and the energy density is constantly improving.

Overall, the market size of lithium-ion batteries has gradually expanded due to their own performance advantages and rapidly declining prices. The increase in demand directly leads to the expansion of industry output and the reduction of manufacturing costs, which in turn stimulates the further increase in market demand. The scale of the industry still has room to continue to expand. However, the energy density and safety of power lithium batteries affect each other. The higher the battery energy density, the worse the battery stability.

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