The world's first mass - produced 3 - minute fast - charge power battery has been unveiled at CIBF2018

On May 22, the 13th China international battery technology exchange/exhibition (CIBF2018), which is twice as large as the previous one, and the 3rd China energy storage technology and application exhibition held at the same time, were grandly opened in shenzhen convention and exhibition center.

The day before yesterday, OFweek2018 (the second China power lithium battery technology and application seminar was successfully held by OFweek lithium power grid. Big players in the industry had a heated discussion on the technology research and application of power lithium battery, especially on how to realize the technical bottleneck of power lithium battery. This also reflects that in the current development of power battery encountered obstacles in the background, the industry from the power battery energy density, low temperature characteristics, cycle life and other performance improvements.

An ideal power battery should be like this: can withstand high current for super quick charge battery, solves the electric vehicle charging problem of long term is greater than the traditional fuel, and can still maintain excellent battery characteristics under low temperature, energy density is large enough, high safety, the cost is similar to the current battery costs or lower... Perhaps there are already batteries out there that are beating the competition in some way. However, terminal car manufacturers or consumers are more concerned about the problem is, is there a quick charge, but also with high energy, high safety, low temperature characteristics, long cycle life of the integrator?

I don't know if it's happened before, but after this CIBF2018 show, maybe someone has an answer.

In this CIBF2018 exhibition, as the only lithium ion power enterprise in hunan province that has passed the standard conditions of the automobile power battery industry regulated by the ministry of industry and information technology, and the leading enterprise in the top ten key industries in hunan province -- miaosheng power technology co., LTD. (hereinafter referred to as "miaosheng power"), CIBF2018 will be presented with its heavy new products. At the show, myosheng power released its self-developed super fast rechargeable battery, providing a breakthrough solution for the current energy supply of new energy vehicles.

So, what kind of power battery is this?

Superfast charging technology will revolutionize the industry

It is known that miaosheng power currently mainly researches and develops battery products with high energy density, high power cell, fast charging, ultra-low temperature, etc., and has advantages in appearance and structure design, BMS research and development, automated flexible production, quality management, safety protection and other aspects.

As the "heart" of electric vehicles, the performance of power batteries restricts the development of electric vehicles. Short battery life, slow charging, and some safety risks, is the current power battery several "dead".

Miaosheng power to bring new technology, is to solve these consumer pain points as a starting point. 22 in the morning, in three minutes, China super quick charge power battery system, electric car world debut at a news conference, wonderful power released them studying achievements over the years, the world's first production for 3 minutes fast charging power battery and first production 3 minutes fast charging car, and synchronous open three minutes · China super fast charging move car charger, test drive. The new technology is expected to solve problems such as rapid charging of electric vehicles and set off a new round of revolution in the new energy vehicle industry.

According to Mr Miao cheng, chairman of the high power has, the release of the world's first production for 3 minutes super quick charge battery, can rapid charging of above 15 c ratio, 3 minutes fast charging more than 80%, 1 c filling cycle more than 10000 times life, even in cold winter low temperature (20 ℃) - environment also can normal boot and fast charging. In addition, the new energy vehicle power battery testing institution has been entrusted to conduct a full range of charging efficiency testing and invited a third-party authoritative notary institution to supervise the whole process, and presented the testing report of the testing institution on the spot.

A series of power battery products were released at the conference, which are divided into 20C, 15C, 10C and 5C charging types. Among them, 5C energy quick rechargeable battery is its main product. The energy density is 190wh/kg to 210wh/kg, with 5C quick charging capacity; It can be used in passenger car, logistics car, bus, power storage and other fields.

Miaosheng power: create "bucket" power battery

Nowadays, people often say "bucket machine", which is used to describe those mobile phones with balanced configuration, no short board and powerful integrated experience. Extend to the field of power battery, "bucket" type power battery is refers to, charge and discharge characteristics, cycle life is long, high energy density, low temperature characteristics, high security and quick charge such a product.

According to qiu, miaosheng power's battery products are close to the discharge characteristics of a straight line, and the remaining electric quantity can be calculated exactly, and the remaining mileage can be accurate to the mileage, effectively eliminating the unpredictability and uncertainty of the mileage, and solving the range anxiety.

In terms of cycle life, he said, after 8,000 cycles of battery testing, the remaining capacity is still more than 80 percent. As can be seen from the graph below, from the overall curve of 0 to 7500 cycles, the residual capacity is a very gentle decline curve. After 7,500 cycles, the remaining capacity fluctuates around 80%.

In terms of safety, even in very cold battery under the low temperature region (below 20 ℃), also can work normally. In addition, he stressed that the unit charge amount of this series of super quick rechargeable batteries is one-tenth of the heat generated by ordinary batteries, meeting the national standard of gbt31485-2015 safety requirements and test methods for power batteries for electric vehicles. The test results of several national safety requirements show that the battery can avoid fire, explosion and leakage under test conditions.

In terms of cell consistency and BMS management, qiu has analyzed that "the dynamic voltage difference of the battery can be controlled within 10mV, and the product consistency is relatively high. The charging and discharging curve of the battery is an inclined straight line, and the corresponding voltage can show the remaining power. The unique straight line can greatly reduce the difficulty of BMS system management. The measurement of residual electric quantity is not accurate, which has always been a bad experience for car owners in the process of using electric vehicles. If the accuracy of measurement can be improved, it can effectively eliminate the owners' anxiety about the effective mileage of electric vehicles.

In addition, according to myosheng power's technical experts, the company's next generation of fast rechargeable battery products, the energy density will be increased to more than 180wh/kg. In view of the current situation that the power of charging piles in China has not yet reached the technical requirements of super quick charging, they have designed and developed 5-minute and 10-minute quick charging batteries specifically while developing 3-minute super quick charging batteries, and started mass production. According to qiu zeyou introduction, at present the home already had many well-known vehicle factory to cast the olive branch. It is worth mentioning that super quick charging is also a technology to maximize the benefits of charging facilities and operating vehicles. Compared with ordinary electric cars, miaosheng super quick rechargeable battery reduces the charging time from about 2 hours to 3-5 minutes, which means the charging pile can be charged for about 24 times per hour, and the efficiency is greatly improved, allowing owners to "charge and go".

Shockingly, in a private conversation with qiu dong, he revealed to OFweek lithium grid that the cost of the 5C's ultra-fast rechargeable battery is similar to that of the current power battery. Just think, if such a power battery in cooperation with the car factory and volume production of real cars, this will promote the whole industry to break through the bottleneck, greatly promote the development of new energy vehicles.

Real car experience, intuitive feeling speed charging is not a dream

According to the introduction, at present, miaosheng super fast charging electric car has completed 36,000 km test, experienced the spring, summer, autumn, winter four seasons, as well as different environments, different roads road test. The car weighs 1700kg and is loaded with 23.8 KWH. The battery energy density is about 150wh/kg. The maximum range is 202 km, and the energy consumption per 100 km is 11.78 KWH, far lower than the current low consumption of 16 KWH / 100 km.

On May 22 in the afternoon, "miao cheng power" technology general counsel qiu has the "knowledge, the New Deal off electrical path to change" hand in hand on the BBS, published titled "super fast charging system solutions" keynote speech, the technical advantages and application of super quick charge battery scene interpretation in detail, and discuss with the guests hundreds of power battery with the development of the future.

In the future, the fast rechargeable battery represented by miaosheng power may lead the new energy automobile industry to break through the bottleneck and develop forward.

The page contains the contents of the machine translation.