to test new energy vehicles, an "all-round examination room" has been built here
2024-09-09
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original title: testing new energy vehicles, an "all-round examination room" is built here (theme)
——project construction frontline notes 19 (subtitle)
hebei daily reporter xu hua
recently, at the great wall motor new energy vehicle performance test center, a provincial key project, technicians were installing and debugging equipment.
"the total investment of the project is 330 million yuan. it integrates a high-altitude powertrain test laboratory, a multi-angle collision test laboratory, an intelligent network connection test laboratory, etc., which can fully meet the various testing needs of new energy vehicles." ge jianghui, the person in charge of the project construction, introduced that at present, the main building of the test center has been topped off, the factory building has been closed, and the decoration, water supply and drainage, and heating projects have been completed. it is expected to be put into use before the end of this year.
in recent years, the new energy vehicle industry has developed rapidly, and consumers have put forward higher requirements for the passive safety and intelligent networking of new energy vehicles. in september 2022, great wall motors launched the new energy vehicle performance test center project, focusing on the pain points and difficulties in the development of new energy vehicles, such as long development cycle and low test coverage, and built 14 types of large-scale comprehensive laboratories, which can carry out more than 220 tests such as multi-angle collision tests and power system efficiency tests to meet the product quality testing needs in various working conditions and complex environments around the world.
although the project has not yet been completed, the laboratory has already started trial operation. "the temperature is controlled at -35℃, the altitude is selected to be 1,000 meters, and we are ready to conduct acceleration performance tests." in the control room of the high-altitude powertrain laboratory, the laboratory director yang long is leading technicians to test a certain model of new energy vehicles.
recently, technicians were installing and debugging equipment in the multi-angle collision test room of great wall motor's new energy vehicle performance test center. photo by xu hua, a reporter from hebei daily
"this is the advantage of cross-construction." ge jianghui said that most of the equipment in the laboratory needs to be installed underground. before construction, they simulated various processes and carried out construction and equipment installation in a cross-cutting manner to complete the main building and deliver the equipment for use.
the laboratory's high and low temperature plateau environment chamber is fully equipped with 3.3-meter-high steel frame doors, 1-meter-thick bulkheads, refrigerators, heaters, etc. the technicians can simulate extreme environments such as high altitude and high cold by controlling the temperature, humidity and air pressure in the chamber. "the temperature in the chamber can be controlled between -40℃ and 50℃, and the humidity can be controlled between 0% and 95%, which can simulate different air pressure environments from sea level to 5,000 meters above sea level," said yang long.
"in the past, we could only conduct on-site tests at high-cold test bases such as heihe and mohe in winter to test the endurance attenuation and low-temperature resistance of new energy vehicles in extremely cold environments," said yang long. "with this environmental chamber, our research and development is not restricted by time and space, and the product development cycle can be shortened by at least three months."
in the multi-angle collision test laboratory adjacent to the high-altitude powertrain test laboratory, staff are debugging the traction system.
the reporter noticed that the laboratory's multi-angle collision area has laid out a total of 8 intersecting straight micro-tracks. "during the test, under the action of the traction system, one car runs along the main track, and the other car can run along any of the 7 tracks at different angles to the main track, and then the two cars collide." hu xiangling, the head of the laboratory, said that compared with the traditional single-car collision test, the multi-angle collision test is closer to the actual traffic accident, which helps them optimize and improve the collision safety performance of the car.
in addition, the laboratory also has various test barriers and rollover test areas, which can carry out rollover tests and pre-brake collision tests. hu xiangling said that according to the collision test results, they will match the parameters such as ignition timing and force limit level involved in restraint systems such as seat belts and airbags to maximize the protection of the safety of the occupants.
"intelligent connected new energy vehicles are the development direction of the global automotive industry. in addition to being equipped with simulation testing, chip/sensor performance testing and other equipment, the intelligent connected laboratory also uses data processing, digital twins and other technologies to build an autonomous driving scenario library." han zhifeng, head of the intelligent connected laboratory, said that this scenario library covers 3,000 scenarios in three categories: functional scenarios, regulatory scenarios, and traffic accident scenarios, which greatly improves the test coverage and helps promote the intelligent development of new energy vehicles.
source: hebei daily
