The meaning of picking up cheap firewood and burning an iron pot

——It is an international technology joke that the American A123 company passed on China Wanxiang

China Wanxiang Group’s acquisition activities in the United States lasted for more than five months, and the bankruptcy court ordered it to pay 2.6 The US-based A123 Systems Company (referred to as "A123") was acquired for US$100 million.

The American A123 company was established in 2001 and listed on the NASDAQ exchange in the United States in 2009. It once used coil-wound steel-cased single batteries with less than 3 Ah in the lithium-ion market for power tools and laptops. The battery maker's style went viral. At that time, the stock had soared to more than 40 US dollars per share.

In 2006, A123 vigorously promoted and advertised its small cylindrical lithium-ion battery as the core power battery pack for electric vehicles. Countless small batteries are first connected in parallel and then connected in series to form a battery pack, which is euphemistically called a "power battery". It has been supplied to automobile companies such as General Motors in the United States and BMW in Germany as the power source for electric vehicles. In the United States, the power of small cylindrical batteries is also strongly touted, and it is trialled by a Fisker K2RM2 SED2N pure electric sports car. In 2008, a trial of less than 2 years proved that the small cylindrical battery had safety hazards. The dangers of small batteries have caused buyers to be embattled on all sides and trapped in a quagmire. At this time, A123's stock price plummeted to $5 per share.

In order to save the crisis, A123 did not research and improve battery technology. Instead, it believed that users did not understand the characteristics of small cylindrical batteries, so it turned to the US energy storage, UPS uninterruptible power supply and other fields. In 2010, A123 connected thousands of small cylindrical batteries in parallel into battery packs ranging from 200 Ah to 2000 Ah, and then connected them in series into different energy storage battery packs from 400V to 700V for solar energy, wind energy and UPS. Power storage system. At this stage the stock rose back to $11/share. Unexpectedly, these battery packs with countless small batteries connected in parallel/series, after repeated charging and discharging, will cause uncontrollable disasters - burning and explosion! This act of ignorance caused the stock to plummet to less than $3 per share.

In 2011, some major shareholders of A123’s original investment fund held numerous technical meetings with the company’s CTO, and finally concluded that small coil-wound low-power lithium-ion batteries can only be used in notebook computers and electric small batteries. Tools must not be used as power batteries for electric vehicles, let alone high-power energy storage and high-power UPS uninterruptible power supply systems.

Here, in the sense of strict subject classification, for example: the low-power A123 small battery only belongs to "elementary mathematics", while the high-power power battery belongs to "advanced mathematics"; in terms of technical content , a small battery is like an "abacus", and a large battery is like a "computer". "Abacus" can handle daily calculations, but it cannot complete large-scale data processing like a "computer". A123 small battery has its application fields, but in the field of lithium-ion power batteries, A123 is just a small trick, and it is a battery technology that is about to be eliminated, backward, low-end, and garbage. Really different!

In the past 12 years, A123 has used small tricks to deceive the high-power lithium-ion power battery market, trying to use "elementary mathematics" to solve "advanced mathematics" problems. It is ignorant at the best and ignorant at the worst. Suspected of fraud. A123 doesn’t understand what a power battery is? What is high-power lithium-ion power battery technology? You don’t understand such simple technology, so you just come out to make jokes. What a shame! Nowadays, the "abacus" is actually sold to China as a "computer", and the backward, low-end, and garbage battery technology is passed on to China. It can also be said to be "foolish for a time, smart for a while."

The power battery is by no means as simple as several small-capacity single batteries connected in parallel/series to meet the load of pure electric vehicles!

If you take tens of thousands of small lithium-ion batteries and connect them in parallel/series to form a 100 Ah 380V battery pack, and assemble it on a pure electric car, there are only two answers: one is Shenzhen, China. BYD rents taxis, which have constant battery accidents and unpredictable maintenance costs; second, the reasons and consequences of A123 going bankrupt 12 years after its establishment.

There are some automobile manufacturers in mainland China, catering to the needs of the local government, using a small cylindrical battery with the model "18650" produced by A123 Company as the core of pure electric public buses. Power source.

This public bus, like BYD taxis, uses 70,000 to 90,000 small batteries connected in parallel/series to form a 500 Ah 380V battery pack. Each charge takes 5 to 12 hours and has a driving range of 190Km. Now, it is driving on the local public transportation route. What a dangerous time bomb!

The managers of China Wanxiang Group and the executives of A123 Company, their understanding and understanding of power batteries are still at the level of "elementary mathematics" 12 years ago. They don’t know that the A123 battery technology they bought is backward, low-end, and junk battery technology, and they have no way of knowing what consequences this small battery equipment that has been eliminated in the power battery market will have on pure electric buses? Not only Wanxiang, but also executives in China's battery industry should learn some "advanced mathematics" knowledge. What’s even more interesting is that Wanxiang in mainland China has been deceived by Americans, and Wanxiang will consciously or unconsciously deceive Chinese people. How sad this is! ?

It is said that mainland China has more advanced lithium-ion power battery technology than A123. The batteries produced by AVIC Lithium Battery, Zhongju Leitian, etc. use a water-based adhesive and layered multi-pole high-power lithium power batteries. It is said to be the only lithium-powered battery currently available for electric vehicles.

It is said that the inventor of this battery is Chinese. In June last year, the major shareholder of the American A123 Company intended to introduce this power battery technology to seek cooperation, but it fell through because the distribution of commercial benefits was not satisfactory.

A123 was unable to save itself and had to file for bankruptcy. One of the reasons for bankruptcy was the understanding that its small battery technology was backward, low-end, and junk battery technology in the high-power power battery market. It is about to be eliminated, so sell it at a low price.

Wanxiang mistook backwardness for advancedness in this acquisition. If Wanxiang still uses low-power batteries to equip pure electric vehicles and is led astray by A123’s technology, then Wanxiang’s future green electric vehicles will The road will not change and there is no room for optimism.

Wanxiang made an international technology joke - "I picked up cheap firewood and burned the bottom pot"!