Electric vehicle power technology improvement needs to pay attention to six major problems

　　Author ：Iflowpower – Portable Power Station Supplier

On October 13, "my country's Heart" 2016 new energy vehicle power system selection the real train test, "my country Automobile News" reporter interviewed the Experts of the On-site Journey. On the one hand, experts from the experts in five years have been affirmed in the progress of new energy vehicles in power system matching, vehicle assembly process; on the other hand, six and vehicle power systems are proposed, these specific issues related to vehicle power systems, these Is an important direction for the company's future product improvement. Question 1: Battery presented excessive space, when starting to evaluate the first vehicle, Hou Fu Shen, deputy secretary general of my country's Automobile Engineering Society, did not go to the head position, but stopped at the car, deep down, carefully observed Car bottom.

"Many electric vehicles are directly transformed directly on traditional cars, putting the whole battery in the bottom of the car, huge battery will take up the space in the car, causing the passengers to curl with the passengers to curl, there is a half-squat. If the car enterprise adjusts the shape of the battery, the shaped design can improve ride space. Hou Fu Shen said to the reporter.

Question 2: There is a risk of battery protection as the core composition of the new energy vehicle power system. The protection performance of the battery is also a question of the key concern of the judges. One of the key indicators of the evaluation is whether the battery full seal design is greater than IP65.

Anti-collision design. "Some car companies have failed to achieve the integrated design of the battery, just put the battery in the bottom of the traditional car chassis, the battery protection and air resistance, etc. "Associate Professor of the Department of Automobile Engineering, Tsinghua University, Wang He Wu, deputy director of the China-US Clean Automobile Alliance, said that the battery is hung in the middle of the chassis, some models have highlighted, there is a direct risks.

Question 3: The effect of braking energy recovery is to improve Wang Hao after the analysis of the test drive, the brake energy recovery technology has a large impact on vehicle energy consumption, related to vehicle driving comfort. In actual driving, the gap between the effect of each vehicle brake energy feedback technology is large. "Individual model brake energy recovery is not obvious, indicating that the energy recovery system is low, should be improved as soon as possible.

"Beijing Jiaotong University Electrical Engineering College, Jiang Jiuchun said to the reporter. Question 4: When the integration of the power system is low in static evaluation of the new energy power system, one of the most concerned issues that the judges is the space layout in the head cabin, which directly reflects the integration capabilities of the vehicle company, individual The resettlement of various components of the model power system is more messy, and there is no good design and sorting. my country Automotive Technology Research Center Automotive Standardization Research Institute Zhou Rong believes that the high integration of new energy power systems will perform very well in reliability, strengthening the integration of components such as electric control, motor, and reducer is the company's efforts.

direction. Question 5: Low speed creepon, fluency is not enough for vehicles and real-vehicle tests, low-speed operation status performance is poor. Wang He Wu criticized: "Some electric vehicles have low-speed creep in low speed or reversing, indicating that the company's research on vehicle motor control system is not deep, and there are not many data, need to continue to improve and improve.

"Question 6: The whole vehicle assembly process has a gap to accept the vehicle test, after obtaining various subsidies, sales price can still reach more than 10,000 yuan, but some vehicle manufacturing processes, driving quality is far less than the traditional power car of the same price. , Braking system performance, installation process of some parts should continue to increase, especially in driving noise suppression. Yin Chengliang, Vice President of Shanghai Jiaotong University Automotive Research Institute, believes that these vehicles have great progress in motor current sound noise suppression, but the whole vehicle process level still has a big improvement room, giving consumers to supply comfortable driving experience The key to consumers recognize.

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