Discussion on "Quick Charge" Battery for New Energy Vehicle Pain Point

The "2018 First New Energy Vehicle and Power Battery(CIBF Shenzhen) International Exchange" with the theme of "Breakthrough and Fusion-Welcome to the New Age of Industry" was held at the Shenzhen Convention and Exhibition Center on May 22-23.

On the morning of May 23, at the special forum on business models with the theme of "Innovation and Application of Business Models", Micro-macro Power System(Huhou) Co., Ltd.(hereinafter referred to as "Micro-macro Power") The former technical director Mazilin made a speech entitled "Introduction to Fast Charging, Long Life, and High Security Power Battery Applications."

In recent years, with the adjustment of the energy consumption structure and the increasingly strict environmental protection requirements, many countries around the world have formulated different policies for the development of new energy industries. Since 2009, China has issued a number of subsidy policies that have greatly boosted the development of new energy vehicles in China. In 2017, China's sales of new energy vehicles reached 777,000, an increase of 53,300 vehicles, including 578,000 passenger vehicles. The growth trend is very clear. According to the plan, by 2020, China's new energy vehicle production and sales are expected to reach 2 million vehicles. Data show that battery shipments in 2017 were 44.5 GWh, a year-on-year increase of 44.5.

Mazilin believes that under the rapid development trend of the new energy automotive industry, the development of fast charging, long life and high safety power batteries has increasingly become the direction of battery manufacturers. At present, there are three main application modes of batteries: one is fast charge, the other is slow charge, and the third is fast change. Due to technical restrictions, the current market is still slow. Mr. Mazilin said the slow charging battery, which takes a long time and is now basically three to five hours, was less efficient. At the same time, the long charging time will occupy more charging stations, and the utilization rate of charging stations is relatively low. At present, in large and medium-sized cities, it is difficult to have suitable land to build large-scale charging power stations.

As early as 2008, Micro-macro Power set a fast charging, long life, and high safety lithium-ion power battery development goal. Mr. Mazilin says micro-macro power's 10-15 minute fast charging product can greatly improve the efficiency of vehicles and charging piles. At the same time, fast rechargeable batteries have different advantages in terms of battery capacity requirements and total battery weight.

The key to battery technology is material development. Mr. Mazilin says micro-macro power, a vertically integrated enterprise, has been focusing on technology development for all components of batteries, from material to core. According to Mazilin, the modified lithium titanate material to solve the gas problem, the high porosity diaphragm designed for rapid charging requirements, and the successful research and development of porous composite carbon materials are the targeted development results of micro-macros in the direction of rapid charging technology.

Battery safety is the core of electric vehicle safety. Mazilin said that safety has always been a top priority for micro-macro power, which is committed to the development of high-safety batteries, through the study of non-flammable electrolyte technology, to solve the problem of battery safety. In addition to the safety design of the power core, the system also provides dual protection through built-in Silicon oil and external MSD. In addition, micro-macro power continuously improves the energy density of the battery on the basis of fast charging, long life, and high safety. According to Mazilin, micro-macro power currently has a maximum energy density of 230 W/kg.

While carrying out the core research, micro-macro power has also done a lot of research in PACK. According to Mazilin, this year the company launched a new generation of standard commercial car boxes, the weight is lighter than before 30. The energy density of the system battery pack is 135 Wh/kg or more.

Battery China Network has learned that since the launch of the first generation of fast charging batteries, GenI, in 2009, Micro-macro Power has released four generations of fast charging batteries. Micro-macro Power's newly introduced high-energy density fast charging battery in 2018 has an energy density of 220 W/kg and can be fully charged for 20 minutes. At the same time, the extremely long cycle life can also guarantee the application of the eight-year full life cycle. According to Mazilin, Micro-power invested its first fast charging line in Chongqing in 2011. As of March 2018, it had 21,000 sets of global supporting battery systems, charging between 2C and 5C, and accumulated operating mileage. Over 1.9 billion kilometers. The products are located in 13 countries and regions and more than 150 cities around the world. There have never been safety accidents caused by battery problems.

Micro-macro Power System(Huzhou) Co., Ltd. was established in December 2006. It specializes in the research and development, design, production and sales of lithium ion battery materials, battery monomers and systems. It is the leading power system solution provider for electric vehicles. Products are widely used in new energy electric vehicles, and they have also begun to be used in bulk in the market for heavy equipment such as power grids, ports, and mines. The company has set up materials, power core and product R&D centers in China, the United States, and Germany. There are more than 600 full-time R&D personnel, of whom 25 have doctoral degrees and more than 130 have master's degrees. By the end of 2017, the company's total production capacity reached 4GWh. Battery China Network has learned that Micro-macro Power has launched three phases of projects to build lithium battery materials, battery monomers, and battery system industrialization projects in batches. It is expected that the new production capacity will be 11GWh.

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