Failure mode analysis of electric vehicle CR2032 button cell swapping technology

　　The research conclusion shows that compared with the charging mode, the CR2032 button cell swapping mode is more technically difficult, the investment scale is larger, and it is more difficult to popularize, and the investment recovery is basically hopeless. The following is a failure mode analysis of electric vehicle CR2032 button cell swapping technology for reference by concerned peers.

　　Many people have some criticisms about the Chinese government's choice of "pure electric" technology route to develop new energy vehicles. The main reason is that power batteries must be equipped with a large number of charging piles for charging, and it is impossible to have many charging piles along the road. Therefore, some experts actively advocate that the only best one at present is the CR2032 button cell swapping technology model.

　　The author has been studying the electric energy supplement mode of electric vehicles for a long time. The research conclusion shows that compared with the charging mode, the CR2032 button cell swap mode is more technically difficult, the investment scale is larger, and it is more difficult to popularize. The investment recovery is basically hopeless. The following is a failure mode analysis of electric vehicle CR2032 button cell swapping technology for reference by concerned peers.

　　1. Why does China propose a new energy vehicle development route of “overtaking in corners”?

　　Energy conservation and emission reduction are common tasks faced by all countries in the world. The direction of automobile development is electrification. This is the common understanding and understanding of the world's automobile industry. However, the implementation is different, that is, there are major differences in the technical routes for developing new energy vehicles in different countries:

　　a) At present, Europe mainly encourages diesel power, and brand manufacturers such as Mercedes-Benz and Audi choose more energy-saving diesel technology routes;

　　b) For many years, Japan has mainly advocated hybrid power, that is, actively promoting the hybrid technology route under the existing refueling infrastructure, and has achieved proud results;

　　c) The U.S. civilian vehicle market is greatly influenced by Japan, and its current basic trend is approaching Japan’s hybrid vehicle route;

　　d) After years of exploration, the Chinese government finally decided to develop pure electric drive vehicles as the technical route for new energy vehicles.

　　To sum it up:

　　a) Europe, the United States and Japan currently advocate tapping the potential of fuel vehicles to improve energy conservation and emission reduction effects. The current route for new energy vehicles in the automotive powerhouse is hybrid vehicles as the first step; fuel cell vehicles as the second step; and pure electric vehicles as the third step.

　　b) After the Chinese government tried hybrid technology, the final option proposed was the technical route of pure electric vehicles, that is, adjusting the original technical route of automobiles, focusing on promoting pure electric (including plug-in hybrid) vehicles, and then Advancing fuel cell vehicles.

　　The basic reasons why the Chinese government proposes the “curve overtaking” technical route:

　　First, the automobile development path in the past was led by powerful countries such as Europe, the United States, and Japan, and China was a follower;

　　Second, China is already a major automobile producer and consumer. As a follower, after 30 years of hard work, it has not become an automobile power, but has lagged behind in technology for a long time;

　　Third, if we continue to develop new energy vehicles along the development path set by developed countries, China will still not be able to become an automotive power.

　　In other words, China already has the "confidence" to formulate a development path for new energy vehicles. Can the Chinese develop an automobile development path to make China an automobile power? It is too early to answer this question with certainty at this time. However, the fact that China's new energy vehicle production and sales exceeded 500,000 units in 2016, making it the world's largest producer of new energy vehicles, shows that China's new energy vehicle industry has entered a rapid development path.

　　2. To develop electric vehicles, how to replenish vehicle CR2032 button cell energy?

　　The on-board CR2032 button cell system is an energy storage component, and its energy supply mode is basically divided into two categories. One is on-board power generation supply, the hybrid mode belongs to on-board power generation supply, and the fuel cell is also on-board power generation supply; the other is relying on the ground power grid for supply. Vehicle CR2032 button cell power supply. There are two ways to supply CR2032 button cell power from the grid:

　　a) CR2032 button cell replacement mode. First charge the CR2032 button cell on the ground, then replace the charged CR2032 button cell in the car, then replace the "empty" CR2032 button cell and charge it;

　　b) Direct charging mode. The vehicle CR2032 button cell is connected to the power supply system of the grid through a charging gun (charger) and then charged.

　　For the battery, whether it is in the CR2032 button cell swapping mode or directly charging the vehicle CR2032 button cell through a charging gun (device), it is a link of electric energy replenishment. Different from the charging mode, the CR2032 button cell swapping mode can realize factory-style charging production and can charge batteries in a large-scale and batch manner. Charging is like processing and production. The CR2032 button cell to be charged is like the material to be processed. The charged CR2032 button cell is like the product leaving the factory.

　　In the CR2032 button cell factory-style charging mode, the power replenishment time is borne by the power replenishment factory, while the time for directly charging the vehicle CR2032 button cell is borne by the car owner. CR2032 button cell charging is an electrochemical process, while refueling is a physical process. According to common sense, if we only focus on the speed of electric energy replenishment, the speed of electrochemical reaction can be much faster than the speed of physical refueling. However, the electrochemical reaction speed is too fast, and the cost of safety measures is also quite high. So in fact, the CR2032 button cell charging time is much longer than the refueling time, which is based on the safety of CR2032 button cell power replenishment. In layman's terms, the technical complexity of replenishing CR2032 button cell power is many times more difficult than physically refueling.

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