Super Copy of Great Power Technology

Chapter 275 Prototype test in progress

"Well, if the speed of 100km/h cannot be reached, then the power of this car is too high, and high-speed overtaking has almost become a luxury." Shao Hongqi, who watched the entire test process, commented.

Qiao Ruida was not surprised by this test result. He smiled calmly and said: "The basic MINIEV is equipped with a motor of only 20KW and a total motor horsepower of only 27 horsepower. This performance is really normal. What is the most suitable use of this car? It is for urban commuting. When driving on urban roads with many vehicles and dense traffic lights, the maximum speed of 80km/h is enough. Trams, on the other hand, do not have a clutch. They just step on the accelerator and drive. They are even smoother than automatic transmission fuel vehicles. It is slippery, and the acceleration is not slow in the starting stage. It is very suitable for urban commuting scenarios where starting, accelerating, and braking are constant. If you really want to go on the highway, you can spend more and choose the later power-enhanced model and the long-range version of the MINIEV. Team leader Ma, continue Let’s do the next test.”

"Okay, Mr. Qiao." Ma Chicheng agreed, then ran back to the testing site and directed the staff to clear the testing equipment and prepare for the next set of prototype vehicle tests. Then three test drivers drove three power-enhanced MINIEVs into the testing site, and a new round of testing started again. The power of these three cars is obviously much stronger than that of the basic model. The pushing feeling is more obvious at the beginning, the acceleration is much faster, and the limit speed finally reaches more than 100km/h, which meets the basic requirements for high-speed overtaking.

新的测试结果出来，“0-40km/h加速测试中用时3.71秒，0-60km/h用时6.40秒，0-100km/h用时17.53秒”。

Seeing this test result, Shao Hongqi nodded with satisfaction and said: "This power-enhanced model is not bad. It finally looks like a car. At least running at high speeds is not a problem. Overtaking and merging are much more calm." . The commuting range of car owners can also be greatly expanded, and even occasionally driving it to nearby cities for business trips is not a problem."

Qiao Ruida shook his head and said: "Actually, the high-speed significance of this car is not great, because the power battery capacity it is equipped with is limited, and the cruising range is only about 170 kilometers. If it is summer or winter, and the air conditioner needs to be turned on during driving, then the cruising range The mileage will be further reduced. Moreover, the first two cars are equipped with only slow-speed charging interfaces. It takes at least ten hours to connect to a slow-speed charging pile for a full charge. Therefore, this model is only suitable for urban commuting and has a long battery life. Mileage limits its range of activities.”

"I heard that Tesla abroad and BYD domestically have developed fast charging technology for new energy vehicles. With fast charging piles, it can achieve a charging speed of more than 30KW. It can complete the charging of electric vehicles in 30 minutes to an hour. Energy replenishment work. Doesn't our Ruida Technology Company master this fast charging technology?" Shao Hongqi asked with some confusion.

"We also have fast charging technology, and it is more advanced than BYD and Tesla's technology, and the charging speed is faster. However, the fast charging interface, and the supporting equipment such as voltage reduction, detection, and battery cooling are expensive to build. After installing it , the vehicle production cost will be greatly increased, which is inconsistent with the market positioning of MINIEV's low-priced entry-level models. The later MINIEV long-range version adds a fast charging interface, and with fast charging piles, it can replenish 80% of the battery within an hour. of electric energy. The car battery is larger and has a cruising range of 300 kilometers, which is very suitable for business trips. But correspondingly, the price of this long-range MINIEV has to be increased a lot, and it can only be purchased for at least yuan." Qiao Ruida patiently explained to Shao Hongqi.

Compared with traditional fuel vehicles, new energy vehicles have two obvious disadvantages: short cruising range and long recharge time. The former shortcoming can be solved by continuously improving battery cell performance, increasing battery energy density, or stacking more batteries in a limited vehicle body. The latter can only be solved by developing fast charging technology and improving charging efficiency per unit time. There are also a few car companies that solve the problem of long recharge time by quickly changing batteries. However, this operation requires the construction of a large amount of infrastructure and the implementation cost is very high, so we will not discuss it here. The two models Qiao Ruida chose were both from ten years later. There is certainly no shortage of fast charging devices, and the technology is much more advanced than the current mainstream fast charging technology in the world. However, there is still no solution to the cost problem. MINIEV small car owners claim that the low price is enough. In order to control costs, they can only reluctantly abandon the fast charging interface on the basic model and the power-enhanced model. If consumers really need to run long distances, they can only choose the more expensive long-range version, which has a fast charging interface and a cruising range of 300 kilometers, which basically meets the needs.

The last ones that drove into the venue for testing were three long-range MINIEVs. The motors they were equipped with were the same as the power-enhanced versions. Because they were equipped with more power batteries, the weight of the vehicles increased a lot. This results in the vehicle's acceleration data not being as high as that of the power-enhanced version. After the final test, the result was, "The 0-40km/h acceleration test took 3.89 seconds, 0-60km/h took 6.96 seconds, and 0-100km/h took 19.13 seconds."

After the straight-line acceleration test of the three models of MINIEV was completed, everyone drove the test prototype to the venue next door to test the braking distance on different road surfaces and at different vehicle speeds. When it comes to braking facilities related to driving safety, Qiao Ruida did not dare to be sloppy in the slightest. The three models were treated equally, and they all chose top-of-the-range solutions within a limited range. After a lap of testing, the results show that on ordinary asphalt roads, the braking distance of three models of MINIEV is 60 meters from 0-21.91km/h, and the braking distance from 80-0km/h without load is 30.8m, which basically meets the safety requirements. need. After braking multiple times in a row, the heat attenuation is not very obvious, and the braking distance data does not fluctuate much.

After two more basic tests, the sky turned completely dark. Qiao Ruida called everyone to call it a day and temporarily stored the test car at the test track. Then Qiao Ruida took everyone to a nearby large hotel, ordered a sumptuous table of local specialties, and refreshed Ma Chicheng and his party. Shao Hongqi and Shao Heping, father and son, were also called by Qiao Ruida to attend the dinner. Shao Heping is the director of Ruida Automobile Factory, and Ma Chicheng is the leader of the automobile research and development team. There will be many opportunities for the two to interact in the future. There are many benefits to getting to know each other in advance, having a meal together, and exchanging feelings.

I originally wanted to call Shen Baiwei and the financial staff together, but the business of the financial department of Reda Technology was so busy that Shen Baiwei and the backbone of Yigan's business did not dare to stay outside for too long. After having lunch in Decheng City, they hurriedly drove back to the capital in the afternoon.

(End of this chapter)