Since the electric vehicle (EV) first appeared in the mid-19th century, people have been full of demand for electric vehicle charging technology. Since the birth of electric vehicles, in the earliest electric vehicles, the battery is a one-time battery, so it will be used up after use. Without charging, the invention of rechargeable batteries meant that new models of electric vehicles could use the same battery without replacement, in fact all of these early electric vehicles were not mass-produced, so early commercial charging stations were not developed In addition, until the early 20th century, many households were not connected to electricity, so charging the car at home was simply impossible.
In early America, 38% of cars were powered by electricity, and these cars were either charged from the battery in the car, or the battery was removed from the car, charged in another location ("Battery room"), and then installed back into the vehicle, The "6KW Watt Station" launched in 1910 was the earliest prototype charging device for charging vehicles. At that time, mercury rectifiers were used for AC/DC conversion, which turned AC into DC. Electric vehicles at that time were the same as today. In the early days, it was also a toy for the rich, and it was very popular in the upper class.
In 1914, GM introduced the first DC charging station called "Electrant". Like the telephone booths at that time, it was placed in every corner of the city to charge tens of thousands of vehicles on the market. From the information at that time, it has a separate billing system, and the maximum current can be as high as 150 amps, which can be used for lead-acid at that time. The 48V battery is charged. Like today's status quo, the charging connector is also separate. (This place is also interesting. The charging interface could not be unified more than 100 years ago, and it still cannot be unified today.) A single-core coaxial connection is used, and the interface is in the middle. The hole is energized and the shell is grounded, which is an early interface form; by the end of the 20th century, the United States introduced the 1772 plug and inductive coupler.
In the 21st century, the current 5-hole structure of AC was introduced, and then to the CCS1 behind The charging interface of the combination of AC and DC, as well as the interface of the upcoming MCS (one of the MW-level high-power fast charging: 3000A charging connector structure!), the change in the form of the interface reflects the change in charging technology, and also begins It tends to have a wider range and market compatibility, because the maximization of the interface is conducive to the faster iteration and development of charging technology; due to the development of the automobile industry in the 1920s, the improvement of road quality and quantity, its driving range Limited electric vehicles were not better suited for long-distance driving, which meant limited use, and during this time period, as ever-larger oil fields were discovered, lower gasoline prices promoted the rapid development of gasoline-powered vehicles, so until the end of the 20th century, the Electric vehicles have always been in a state of "big toys for the rich", and during this time period, fuel vehicles have developed rapidly, and this development varies with the national economic development, which is also the development demand for electric vehicles in different countries in the future.
At the end of the 20th century, the public became more and more aware of the problem of air pollution, and the idea of mass-producing electric vehicles began to re-emerge, especially in the United States at that time. After World War II, a large number of scientists went to the United States, which also promoted the United States. With the rapid development of technology, which also includes the technology of electric vehicles, automobile companies have begun to try to produce different models of electric vehicles on a large scale; many technologies now have not changed much from 50 years ago. At first, early cars hoped to be able to Charging at home, so hybrid electric vehicles or extended-range technology have been considered as a compromise between fuel and electric vehicles for a period of time; as the scale of commercial companies continued to increase, and more and more manufacturers participated, the demand for charging facilities Being released quickly, the demand for charging infrastructure is once again particularly important, which is also an important reason why Tesla also considered charging facilities when it decided to enter the EV field.
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