tramway News: In response to the planning of Ningde era battery technology, Xiang Yanhuo, president of the passenger car solutions department of Ningde era China, revealed yesterday that Ningde era will officially launch a highly integrated CTC around 2025 Battery technology is expected to be upgraded to the fifth-generation intelligent CTC electric chassis system around 2028. At the same time, it is also working hard to solve the technical bottleneck of lithium metal batteries. Using lithium metal as the negative electrode can achieve the energy density of power batteries above 350Wh/kg.
It is understood that CTC is the abbreviation of Cell to Chassis, which can be understood as a further extension of CTP (Cell to Pack). Its core is to eliminate the module and packaging process, and directly integrate the battery into the car chassis to achieve higher Degree of integration.
Ningde Times Chairman Zeng Yuqun previously introduced that CTC technology will not only rearrange the batteries, but also incorporate three-electric systems, including motors, electronic controls, and vehicle high voltages such as DC/DC and OBC. In the future, CTC technology will further optimize power distribution and reduce energy consumption through intelligent power domain controllers.
Since CATL launched the first-generation CTP battery technology for passenger cars in 2019, the innovative battery structure has gradually become an important means for many battery companies to reduce costs and increase efficiency. According to the official introduction of the Ningde Times, due to the omission of battery modules, CTP batteries can increase the volume utilization rate by 15%-20%, reduce the number of parts by 40%, increase production efficiency by 50% and reduce power batteries compared with traditional battery packs. The manufacturing cost.
According to Xiang Yanhuo, CATL is currently planning a second-generation platform-based CTP battery system, which is planned to be put into market application from 2022 to 2023, and will be launched for the full range of models from A00 to D The third-generation serialized CTP battery system. The CTC technology is a further expansion, which is equivalent to the fourth-generation battery system of the Ningde era. Based on CTC technology, the Ningde era plans to upgrade to the fifth-generation intelligent CTC electric chassis system around 2028.
In addition to using CTC technology in the battery structure,Xiang Yanhuo also believes that the iterative upgrade of the chemical system is the core of improving energy density.
According to the plan of the Ningde era, the lithium iron phosphate material system will be preferentially used for economical vehicles, to give full play to the advantages of lithium iron phosphate batteries, to meet the range requirements of 100-600 kilometers, and strive to increase the energy density of lithium iron phosphate batteries to 200 -230Wh/kg. For the performance car market, to meet the 400-800 km cruising range requirements, it is necessary to tap the potential of the battery in terms of cycle life and fast charging technology, and hope to achieve it through the development of cobalt-free batteries.
Item Yanhuo said that to achieve higher energy density, it is necessary to develop from the negative electrode of the battery. At this stage, the energy density of the negative electrode battery of the graphite system is 270Wh/kg. It is estimated that the energy density of the negative electrode battery of the silicon system can reach 300Wh/kg in 2-5 years, and it is expected that the solid lithium metal can be mass produced in 5-10 years. The energy density of the battery can reach 350Wh/kg, and the energy density of the liquid lithium metal battery is expected to reach 400Wh/kg in 10 years.
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