How much material is there in the body?
After many hours of hard work, the engineers separated the coverings and core components of the small ant body from the white body one by one.
The first point of interest is the outer covering material of the small ant, which is made of polymer composite materials, and its tensile strength is higher than that of steel materials, and the outer covering of this material can be automatically restored when encountering some small impacts, and it is not easy to deform.
We put the small ant side door that had just been removed together with the traditional steel door, and the two staff members placed the dumbbells weighing 5kg at the same height (about 2.5m from the door) and released the dumbbells in their hands at the same time, and the dumbbells free-fall hit the doors tiled on the ground.
The small ant's one-piece Easy-Entry electric seat is wrapped in an antibacterial and environmentally friendly fabric, which effectively inhibits the growth of bacteria, and this seat supports a key of rapid shift + folding and resetting, which is convenient for the back passengers to enter and exit.
Ant provides three charging methods, in the efficient fast charging mode, it takes only 30 minutes to charge from 30% to 80%. It is worth mentioning that the power battery also has IP68 level dustproof and waterproof performance, as well as high voltage power failure protection, collision automatic power off and other functions.
Experiment to see the truth!
1
"Body Fall Experiment"
This experiment is to verify the strength of the all-aluminum body, this time we choose the high-altitude free fall method, the body is suspended at the specified height (10m, 15m, 20m), and the damage to the body is observed after the free fall.
According to the national standard, the test vehicle is required to collide head-on with a 100% overlap rate of 50km/h with rigid fixed obstacle avoidance. Our experiment uses free fall to match the requirements of the national standard, and the height of the first experiment is 10m, and the speed of the small ant body free fall to the ground is 50.4km/h, which has exceeded the requirements of the national standard.
It is worth mentioning that the national standard requires rigid fixation of obstacle avoidance to be attached to a 20mm thickness of plywood, and this experiment small ant white body directly collides with the cement ground, and the experimental conditions far exceed the national standard.
Specifically, after the collision, the A-pillar, front column, firewall, bottom plate and other positions of the small ant white body are in a relatively intact state, avoiding the driver's head, legs, etc. From being injured, we predict that in the actual collision accident, the small ants can also protect the safety of the drivers and occupants of the car.
Next, the brute force test escalates! The body after the 10m collision was continuously struck from a height of 15m and 20m, hitting the cement floor at a speed of 61.7km/h and 71.3km/h respectively.
After three impacts, the firewall was damaged, but it never invaded the cockpit, and the legroom of the front passengers was guaranteed; and the strength of the A-pillar was very good, so the movement space of the occupant's upper body after the impact was not squeezed, at the same time, after many collisions, the door could still be opened normally, and the overall safety was quite excellent.
In order to further study the internal structure of the small ant's all-aluminum body, we cut the A-pillar and column of the skeleton. After cutting, it was found that the small ant body adopted a complex cross-sectional design and used multi-cavity reinforcement technology, which not only facilitated the direct replacement of the structure of a certain part, but also strengthened the overall collision safety.
2
"Seawater Immersion Body Experiment"
One of the highlights of this experiment was to verify the corrosion resistance of the aluminum body. We put the white body of the small ant into the sea water together with a steel plate, and after a week, we took out the water surface and analyzed it.
Experiments have proved that the corrosion resistance of the all-aluminum body of the small ant is better than that of the steel body, and it is more assured to use it in humid environments and coastal areas.
3
"Immersion Power Battery Experiment"
The last experiment was to verify the sealing of the battery, in order to more intuitively see the sealing performance of the power battery in the water, we put several goldfish into the pool together.
According to the national standard, the test object in accordance with the manufacturer's installation state is all immersed in water, for the height of less than 850mm of the test object, its lowest point should be lower than the water surface 1000mm, for the height is equal to or greater than 850mm of the object, its highest point should be lower than the water surface of 150mm, the entire test duration of 30min, the water temperature and the temperature difference between the test object is not more than 5 degrees Celsius. Our test this time, under the premise of meeting the requirements of the national standard test, extended the soaking time to 2 hours and tested at 1.5 meters underwater.
After 2 hours, the goldfish remained normally viable, confirming that there was no leakage of electricity or water ingress. In order to verify that the battery is properly energized, we also use professional test equipment.
summary
Through body disassembly and experiments, it can be found that although the small ants position micro-electric vehicles, they are quite intrinsically material, such as aviation-grade all-aluminum body, Easy-Entry power seats, battery packs with 408km endurance, front/rear McPherson-style fully independent suspension, etc., which are rare hardware configurations in the same class. In addition, the corrosion resistance of the body, the safety of the body collision, and the sealing of the power battery have all performed very well, which is enough to cope with most of our car scenes.
(Photo/Text/Photo: Zhang Hua of Pacific Auto Network)