Abstract: After Chai Jing’s "Under the Dome", there was such a period of a documentary about new energy vehicles that left a deep impression on me. At the beginning of the film is a white-haired old professor asking: Why do humans develop new energy vehicles?
Why develop a new car? In the next 50 years, the global population will increase from 6 billion to 10 billion, and the number of vehicles will increase from 70 million to 2.5 billion. If all cars are driven by internal combustion engines, all the fossil fuels on Earth can't withstand human consumption for a few years, and the pollution caused by the huge emissions from fossil fuels will turn the planet we live on into a greenhouse. It will always be gray... all this will be extremely heavy!
In terms of the environment, the displacement of new energy vehicles is very low or even zero. In terms of energy, new energy vehicles can provide a safe, comprehensive and balanced way of using energy, with high efficiency, less impact on the environment, and renewable advantages. .
The new energy vehicle is now in a broken stage, fragile, imperfect, and with bursts of pain. There are about four key issues facing the development of new energy vehicles.
1, the high price allows the public to see only
Due to the complex and high cost of new energy vehicle battery technology, it is difficult to achieve scale effect in the short term, which greatly weakens the purchasing needs of individual consumers. Therefore, how to reduce the cost of pure electric vehicles and effectively promote them has a long way to go.
2, the battery is not enough
The batteries used in existing new energy vehicles cannot maintain reasonable size and quality while storing sufficient energy. If the car's own equipment is too large, it will affect the acceleration performance and the maximum speed. For example, the external volume of an existing electric vehicle battery generally reaches 550L. When such a large-capacity battery is used in a family car, it is necessary to squeeze more than one-third of the space of the car.
3, vehicle control technology is not mature
More mainstream electric vehicle control systems are now using CAN bus communication links, which not only greatly improves the efficiency and stability of the control, but also enables digital control. With the development of motor drive systems and the application of various new technologies and materials, control systems tend to be intelligent and digital. But in general, there is still a journey of exploration for the maturity of new vehicle control.
4. The basic supporting facilities are not perfect.
The lag in the construction of charging piles has seriously hindered the promotion of new energy vehicles. In the long run, with the gradual popularization of electric vehicles, decentralized charging piles installed in residential and parking lots should be the mainstream way of charging electric vehicles.
The development of new energy vehicles is in line with people's demand for energy conservation and environmental protection. In the next few decades, with the help of new technologies, research on new energy vehicles will continue. The state put forward the guidelines of “breaking through key points, driving innovation, accelerating application, and coordinating developmentâ€, taking the pure electric vehicle as the main strategic orientation of China's automobile industry transformation, focusing on breaking through the power battery, motor and electronic control technology, promoting pure electric vehicles and plugging in electricity. The industrialization of hybrid electric vehicles will realize the leap-forward development of China's automobile industry.
In the development of the drive system, the support of the test equipment is inseparable. Just like the detection equipment of the gravitational wave observatory (LIGO), the gravitational wave cannot be found.
According to the reliability test method of GB/T 29307 electric vehicle drive system, Zhiyuan Electronics strictly tests the electric vehicle motor with the electric motor motor condition circulation system, and can judge whether the motor can enter the practical application.
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