Beijing pure electric bus will meet the exam

In September of this year, Beijing Public Transport put on a new batch of pure electric buses, which were equipped with 455 and 496 roads from Beijing’s Sihui Bus Terminal, a total of 40 vehicles, all of which were Futian’s new electric-only electric buses. The car has been in operation for nearly 3 months. Compared with the charging mode in Beijing before, what are the operating effects of these batches of pure electric buses?

On December 5, the reporter went to Sihui to conduct an on-site investigation.

The battery life of Beijing Sihui Charging Station is not enough to increase the operating efficiency. It is necessary to raise the reporter to just board a 496-way electric bus. He heard driver Chen and colleagues on the side (carriage to go home, not following the car) to discuss the exchange of electricity. The problem.

"Is this lap running?" said the colleague.

"I feel the same. I'll go for a change of electricity after this lap." Master Chen looked at the meter and replied.

The reporter immediately asked Master Chen in detail about the cruising range of the car and the time it took to change the electricity.

“The 496-way one-way trip is 13 kilometers, and what we are talking about is a round trip, which is 26 kilometers. In the absence of air conditioning, this car will consume more than 25% of its electricity after running for a while. Electricity consumption will rise to 35%.” The driver’s figure is not unambiguous.

The author calculated this number, that is, this type of electric bus can run three times without air conditioning. Is this really the case?

However, the driver told the reporter that, in fact, they usually run for two laps and change the power once: "When the battery power drops below 40%, it will obviously feel that this car is boring. If there are more passengers during the rush hours, At that time, the car couldn’t move at all, but in front of it, it was a green light, and after the slow driving past, it turned red, and the road would be blocked, which would affect the operational efficiency even more, so we have to ensure that the electricity is above 40%, that is, The actual amount of electricity that can be used is only 60%, so the frequency of the exchange of electricity has also changed to two laps."

The reporter observed that when an electric bus is being recharged, it needs to go from the west side of Sihui Bus Terminal to the national grid charging station on the east side. The driver only needs to park the car to the outside of the charging room, and then change a bus that has already been charged and can complete the electricity exchange without waiting. However, the entire transfer process also takes ten minutes.

In this regard, Master Chen also has some complaints. “The bus company requires us to complete 5 laps per day, which takes about 75 minutes each time. Normally we can finish it within 8 hours, but now we have added nearly half an hour of battery replacement time, and it is easy to appear on the road. Inadequate power and slow driving, which led to the inability to complete tasks for the day during normal working hours. We can only work overtime."

The same situation also appeared on the 455 line. According to the introduction of the 455 bus driver, the 455 line is shorter than the 496, only 11.35 kilometers one-way, and only 11 stations, which is considered to be a “mini” in the Beijing bus line known for its long line station.

“This type of electric bus can only be operated on this short-term line. For such a short line, we have to exchange electricity twice. If the line is lengthened, the problem on the road will become more complicated. I am afraid that it will have to change electricity in a circle. "The master estimated that.

The bus terminal where pure electric buses are parked will bring the battery life to a low temperature. As we all know, at this stage, the battery life in the low-temperature environment will seriously decline. This problem was also exposed at the end of November when the cold weather in Beijing came.

"I had a class at minus 5 degrees Celsius that morning. When I went to the station and found that the electric buses were parked in the parking lot outside the charging station, the staff at the charging station told me that the batteries didn't charge. The cars parked outside are all dead and there is no car that can be changed," Master Chen told reporters.

On that day, in order to ensure the normal operation of these two lines, the bus company can only transfer a batch of LNG buses from other lines to save the urgency.

“It may also be that the charging station staff was not prepared for the low temperature coming from the raid. The situation was much better the next day and the battery could be charged. However, the battery life is still not enough, in this low temperature environment. When the battery power is lower than 50%, the car feels boring,” recalled Master Chen.

What makes Mr. Chen more worried is that the coldest winter temperatures in Beijing can reach minus 15 degrees Celsius, which will be a more severe test for this group of electric buses.

Although Master Chen is not very satisfied with the performance of electric buses in low-temperature environments, he believes that these electric buses are entirely new roads, have problems and can be understood, and they also have many advantages.

“The quality of Futian's bus is still good. After all, it is also a new car. There have been no major problems so far. There are after-sales maintenance personnel in Futian at the departure and destination stations. If the car is in trouble, you can call 'emergency. “Telephone, as long as there is no traffic jam on the road, and maintenance personnel can arrive quickly, it can be seen from this point that Futian is still very careful about this batch of vehicles. I also hope that these vehicles can smoothly pass through the upcoming coming under careful maintenance. The cold weather." Master Chen smiled and said.

In addition, according to the staff of Sihui Electric Bus Charging Station, 160 Futian electric buses of the same model will be put into operation after the end of the year. The batteries carried by these cars are also managed by Sihui Electric Bus Charging Station.

According to the data disclosed at the beginning of the operation of Sihui Electric Bus Charging Station, the daily service capacity of the station is 160 electric buses. How to manage the vehicles that exceed the service limit? Nearly 200 pure electric buses are changing the station. Will the scheduling be carried out in an orderly manner? These will test this newly built charging station and its staff.

In order for Beijing to have a blue sky and for Beijing to be able to reduce haze, bus manufacturers, bus companies and crews have all worked hard. I believe that with the increasing number of buses on the road in Beijing, not only some problems can be continuously improved, but also it can contribute to energy conservation and emission reduction in the capital.