When it comes to new energy vehicles, what is your first impression? Electric car? Plug-in hybrid car ? hybrid car? Fuel cell car ?
The concept of new energy vehicles is easy to cause confusion. For an ordinary consumer, they think that they are buying vehicles such as solar cars and wind energy vehicles. We cannot simply apply the government subsidy concept to the new energy vehicle market. More correctly, the true essence of new energy vehicles is the convenience and safety brought about by electrification, and the concept of true future new energy is the subversive change brought about by electrification.
SAIC General Electricization Concept EVness Connotation
Some time ago, when the LaCrosse 30H went public, SAIC General Motors proposed the concept of EVness. This is the most accurate concept that the author heard about new energy vehicles. The real new energy vehicles are consumed by the latest technology of secondary energy (electricity) electrification. Products that bring different driving experiences.
Electrification: Can you represent new energy?
The electric vehicle has undergone tremendous changes through a hundred years of change. In 1904, the number of American electric vehicle companies reached 67, and the annual output reached 4,000. The electric vehicle once dominated the automobile market, and the technological changes of fuel vehicles replaced the market position of electric vehicles. After a hundred years, limited by environmental protection and energy security, new energy vehicles have once again become the focus of attention. Today, electric vehicles and electric vehicles derived from electric vehicles can give consumers more experience.
GM Bolt electric car
When it comes to the concept of new energy, there are several famous models: Toyota Prius, General Volt, Tesla Model S, Nissan Leaf, General Bolt, etc., which have good performance in the United States, whether it is a hybrid car, Or pure electric cars , leaving the government's definition of outerwear, who can represent new energy vehicles?
GM Bolt electric vehicle chassis
Of course, this is not a general election in the United States. It is not a polling election that limits the number of places, but who is more in line with the concept of electrification: intelligence, efficiency, environmental protection, control, and safety are extremely important.
GM Bolt electric vehicle electric drive assembly
Behind these concepts and nouns, it is not simply a matter of accumulating, nor simply adding a motor to call it a new energy source, or simply subverting the traditional car concept through an APP control screen and several slides. Combining these is a technological breakthrough and breakthrough and a product explosion behind sophisticated system integration.
What does electrification bring to gasoline vehicles?
When consumers are shopping for vehicles, they like to compare traditional cars to find new energy vehicles . There are many concepts worth mentioning.
One, higher or even the most efficient
One of the core concepts of electrification is efficiency, with two concepts in it:
The first concept is that the electrified core component drives the motor very efficiently, and the highest efficiency can reach about 97%. Compared with the engine's 30%, this not only has high peak efficiency, but also higher efficiency in all working conditions. Double 80", that is, more than 80% of the working conditions are more than 80% efficient. This concept is far from being possible with conventional gasoline and diesel vehicles.
LaCrosse 30H electric drive assembly
The second concept is that the electrified core component drive motor cooperates to give the traditional powertrain a revolutionary ability and opportunity to maximize the overall efficiency. Take the LaCrosse 30H as an example. Because of the cooperation of the drive motor, the engine can adopt Miller. The cycle (the Japanese model is called the Atkinson cycle), the engine's maximum efficiency is close to 40%, and the use of the engine, through the dual motor and the double star row, allows the engine to work in the most efficient area.
Simply put, the use of a drive motor with low power efficiency through the power split coupling technique is also the result of the â€œpeak clippingâ€ that we often talk about.
LaCrosse 30H drive motor explosion diagram
Of course, the support behind the two concepts is the rapid development of electrified core components. Taking the LaCrosse 30H as an example, the flat-pin hair pin winding can maximize the slot full rate and maximize the power density and efficiency. Therefore, many times, we have seen that many companies are talking about the concept of electric vehicles or hybrid vehicles . They talk about advanced and forward-looking. After opening the outerwear of the products, they can really see each other. At present, in the so-called mainstream sales models in the Chinese market, It has not been found that a higher-tech hair pin flat wire drive motor is used.
LaCrosse 30H drive motor disassembly diagram
Second, the ultimate silence
In addition to high efficiency, mute is the second significant feature of electrification applications for consumers. This feature is an important technical point to test the core components of automobile manufacturers . Generally speaking, the driving motor of electric vehicles also produces a certain noise, that is, the motor. The whistling sound, the GM LaCrosse 30H, Toyota Prius as the representative of the car drive motor is very good in mute, so the overall mute level of the car is much higher than the fuel car.
A typical feature of a car is its dynamic characteristics, and electrification technology brings a revolutionary power output to the car.
This kind of power is reflected in two aspects. When the vehicle starts, the driving motor can achieve the maximum torque output at low speed or even zero speed, which is very good when it accelerates in 100 kilometers.
In the middle and high section acceleration, taking the LaCrosse 30H hybrid car as an example, through the cooperation of two drive motors, engines and double-star rows, the power output is maximized, and the output of the vehicle is continuously driven.
The GM HCU (Complete Vehicle Controller) is integrated with the MCU on a controller with four 32-bit Freescale microcontrollers, controlling two motors, an electronic oil pump, clutch and vehicle control. Controller internal control communication has higher transmission speed, safety and lower cost.
GM's second-generation Voltec controller
Sometimes, the development of the times makes us feel that four 32-bit microcontrollers are integrated on one controller, so that a supercomputer is actually used in the control of hybrid power. This kind of intelligence is more and more inclined to IT products.
In recent years, everyoneâ€™s understanding of new energy vehicles has been deepened. The safety problems that everyone worried about in the past few years have rarely been mentioned. In fact, new energy vehicles are safer.
There are two objective indicator concepts. One is functional safety. With the development of new energy vehicles, the times and the development of technology, such as the LaCrosse 30H, the models use a very high level of functional safety definition, adding multiple systems. Keep the system safe.
At the same time, in high-voltage devices, such as drive motors, batteries, etc., the use of IP67 (waterproof and dustproof level) technology, that is, in the area of â€‹â€‹1 meter underwater, still can work normally.
In particular, in the design of the power battery, special research and development technology and structure are adopted, so that the power battery can work normally and safely under normal and extreme working conditions.
Electrification is quickly applied to cars. We are fortunate to stand at the turning point of the automobile to the era of electrification. Perhaps there is still a lot of imagination in the current new energy vehicles, but the changes brought about by electrification have gradually emerged, as I have seen Sla Model S/X, GM BOLT, LaCrosse 30H, etc., higher energy consumption, quieter space, smoother power, more efficient transmission, safer driving, which brings us an unprecedented driving experience, expecting electrification to bring more Subversive changes.
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