Working principle: battery - current - power regulator - electric motor - power transmission system - driving the car. In September 2022, scientists at Harvard University developed a new type of solid-state lithium metal battery for electric vehicles (EVs).

　　Types of electric vehicles: pure electric vehicles (BEV), hybrid electric vehicles (HEV), fuel cell vehicles (FCEV).

　　Pure electric vehicles are vehicles driven by electric motors. Pure electric vehicles, compared with fuel vehicles, the main difference (difference) lies in the four major components, drive motor, speed controller, power battery, and on-board charger. Compared with gas stations, it consists of public ultra-fast charging stations. The quality difference of pure electric vehicles depends on these four components, and its value also depends on the quality of these four components. The use of pure electric vehicles is also directly related to the selection and configuration of the four major components.

　　The speed and starting speed of pure electric vehicles depend on the power and performance of the drive motor. The mileage depends on the capacity of the vehicle's power battery. The weight of the vehicle's power battery depends on which power battery is selected, such as lead-acid, zinc Carbon, lithium batteries, etc., their volume, specific gravity, specific power, specific energy, and cycle life are all different. This depends on the manufacturer's positioning and use of the vehicle grade, as well as market definition and market segmentation.

　　The driving motors of pure electric vehicles are divided into DC brushed, brushless, permanent magnet, electromagnetic, and AC stepping motors, etc. Their selection is also related to the vehicle configuration, use, and grade. In addition, the speed regulation control of the driving motor is also divided into stepless speed regulation and stepless speed regulation. There are electronic speed regulation controllers and no speed regulation controllers. Motors include hub motors, inner rotor motors, single motor drives, multi-motor drives, and combined motor drives.

　　Electric vehicles have become the development trend of the automobile industry. Major brands have begun to lay out the electrification industry a few years ago, and pure electric manufacturers like Tesla have built their electric vehicles into products with extreme performance. A key feature of electric vehicles is that their drivetrains are simpler than gasoline or diesel engines. There is far less lag, wasted energy and inertia than an internal combustion engine, so maximum power and torque are available the instant you step on the accelerator.

　　Automakers big and small have capitalized on this, churning out electric hypercars, hypercars, and race cars of enormous speed and power. It's not uncommon for these cars to have power outputs in excess of 1000bhp and 0-100km times of two seconds or less. While many of these models are either development prototypes or extremely expensive exclusives, the technology and thinking behind them is expected to trickle down to more electrified performance cars in the coming years. This heralds a future of enhanced driving pleasure as the world transitions to zero-emission mobility.

　　Even though electric cars are new to the automotive market, they still break all records for the fastest cars (0-100 km/h) set by internal combustion engine cars.

　　Electric cars were once considered an idealistic but unsustainable, impractical alternative to gas cars, but those days are long gone. Besides the huge environmental benefit of relying on electricity to fill the water tank, these cars actually take less time to reach maximum speed. Whereas a gas or diesel engine needs to build revs to achieve the power needed to build horsepower, with an electric car the same torque is instantly available. The need to change gears evaporates and the need to rev the engine. Plus, these blazingly fast cars look incredible too.

　　On November 22, at the "2022 Technology Vision Day" held in Shanghai, General Motors China demonstrated its latest progress in the Ultium Altetron global electric platform for more than a year. In order to realize the global vision of "zero accidents, zero emissions, and zero congestion" as soon as possible, the company announced that it will launch more than 15 electric models based on the Autoneng platform in the Chinese market by the end of 2025, and will launch a new software platform next year to fully accelerate Promote electrification and intelligent networking.

　　GM Chairman and Chief Executive Officer Mary Barra said: "With the continuous emergence of breakthrough technologies, we are experiencing a wave of change unprecedented in the automotive industry. GM aspires to lead this change and ultimately serve us. Today’s and tomorrow’s consumers create a better, safer and more sustainable world.”

　　Win every step of the way and accelerate towards a pure electric future

　　The Ultium Alternative Energy platform released last year is vigorously driving General Motors to continue to advance its electrification strategy. As the industry's first ultra-large-scale electric vehicle platform, Auton has flexible and unlimited potential and safe and reliable technical genes, which not only make every electric vehicle based on it stronger, but also fully empower electric vehicle products The rapid expansion of the line in the global market.

　　In October 2022, the total sales volume of China's smart electric vehicle SEVs was 408,000 units, a decrease of 3.3% from the previous month. The cumulative total sales volume of SEVs from January to October 2022 was 2.742 million units.

　　In October 2022, the top 10 smart electric vehicle SEV brands will sell a total of 253,000 units, with a head concentration ratio (CR10) of 62.0%.

　　BYD still ranks first in the sales list of SEV brands, but in the face of a 6.3% month-on-month decline, it can be said that "a small loss is safe."

　　Tesla’s month-on-month sales led the decline. Although a large amount of production capacity of the Shanghai factory was exported to the European market, Tesla still chose to lower product prices and increase car insurance discounts in the Chinese market against the general trend of lithium mine price increases. Anxiety about insufficient orders in the Chinese market.

　　In addition, two car companies bucked the trend and soared, namely Jikrypton and Changan Automobile, with an increase of more than 19%.

　　In addition, the sales of three other SEV brands fell sharply month-on-month, namely Aian, Hezhong and Leapao, with a drop of more than 25%.

　　Song PLUS, Dolphin, Qin PLUS, Han, and Yuanba are the top five on the list. Regardless of whether it is a sedan or an SUV, pure electric or PHEV, the rich product matrix of the industry leader BYD fills the data column of the model ranking.

　　The sales volume of Changan Deep Blue SL03, which is highly concerned by the market, surged 118.9% month-on-month, of which 4,000+ range-extended models sold well, and pure electric models contributed the remaining 2,000+ units. Popularity.

　　Also maintaining a rapid growth momentum are BYD Seal and Wenjie M7, whose sales volume increased by more than 44% month-on-month. Other models with larger sales growth include Jikrypton 001 and BYD Yuan, both of which increased by more than 19%.

　　In 2022, a variety of SEV sedans with excellent product capabilities will be born, and new hot-selling categories will be discovered in the market where SUVs were originally the mainstream. Whether it is the era of fuel vehicles, the era of smart electric vehicles SEV or the era of rising "oil prices and lithium prices", cars have lower purchase prices and operating costs, and have sufficient strength to occupy a place in the fiercely competitive market.