On April 2, Xingtu Automobile, together with technical experts from China Automotive Center, conducted a thorough dismantling and live broadcast of the Xingtu Yaoguang C-DM "Guodaoshan" super national standard chassis continuous impact challenge test vehicle and its battery, and combined with high-power charging and discharging, 126 times the national standard impact and fall tests, it was proved that the Yaoguang C-DM power battery can achieve normal basic functional performance and no internal damage after continuously undergoing the impact far exceeding the difficulty of the national standard test. Once again, the excellent safety and safety design level of Yaoguang C-DM power battery was proved to the public. Professor Meng Xianming, chief expert of the China Automotive Center, and technical experts from Xingtu and CATL participated in the dismantling and test throughout the process, and industry media and automobile experts witnessed the whole process.
More than 20 days ago, witnessed by hundreds of car owners, media and millions of netizens on the whole network, Yaoguang C-DM took the initiative to launch a continuous impact test of the chassis of a new energy vehicle that far exceeded the national standard (30 km/h, 30mm intrusion), and hit three consecutive underbody obstacles with 30mm, 40mm, and 50mm intrusion (overlap) with the battery at a speed of 30km/h, 40km/h, and 50km/h respectively. The test vehicle used for dismantling this time is the Yaoguang C-DM that can still achieve "no smoke, no leakage, and no water immersion" after "3 consecutive impacts and 30min standing".
Suffered 3 times the continuous impact of the national standard
The charging and discharging function of Yaoguang C-DM battery is normal
Before the dismantling, under the strict supervision of the national authority China Automobile Center, the engineer first conducted a charge and discharge test on the vehicle. In less than 1 minute, the charging voltage quickly stabilized at about 330V, the charging power rose to 35.32kW, the real-time charging temperature was normal, and the power rose to 26%. During the whole charging process, the fault-free light of the vehicle dashboard was lit, and there was no abnormal charging of the vehicle or the charging pile.
Subsequently, the test vehicle also completed three consecutive full-throttle acceleration tests from 0 to 100 km/h in EV mode. The vehicle accelerates from a standstill to more than 46 km/h in 4 seconds, showing that the acceleration ability is normal, proving that the battery is functioning properly with high-power discharge.
The above tests show that even after suffering 3 times the continuous impact of the national standard, the internal structure of the power battery, the battery cell and the water cooling system of the Yaoguang C-DM remain normal and can work normally, fully demonstrating the excellent safety performance of the whole vehicle, especially the battery system.
Suffered 3 times the continuous impact of the national standard
Yaoguang C-DM battery passed another 126 times impact drop test
What is eye-catching is that during the live broadcast, Yaoguang C-DM successfully completed the industry's first test of "impact strength exceeding the national standard by 126 times" of battery drop impact simulation upright prism.
Compared with the national standard GB/T31467.3 battery drop test, this test is already difficult. When falling from a height of 2 meters, the gravitational potential energy is twice as high as that of the national standard of 1 meter. The contact surface of the battery designed to simulate the edge of the manhole cover is only 40×500mm² in size, and the impact pressure is as high as 126.6 times that of the national standard. Under such a test design, if you want to be unharmed after falling, it is better than the continuous impact test of the chassis.
| Test criteria | 国标GB/T31467.3 |
| Drop method | The Z-axis falls | The Z-axis falls |
| Drop height | 2 U.S. | 1 U.S. |
| barrier | Simulate the edge of the manhole cover | Flat ground |
| Contact Surfaces | 40×500mm² | 1169×1083mm² |
| Impact pressure | 126.6 times | 1 times |
Considering that the battery pack has undergone 3 consecutive impacts, the Z impact speed is more than 50km/h, and the Z impact intrusion degree is more than 50mm. If the battery cells in the battery pack are already in a critical state of loss of control, once dropped, a violent chemical reaction will inevitably occur, or even an explosion.
Fortunately, even in the face of such extreme challenges, the M3P lithium manganese iron phosphate battery carried by Yaoguang C-DM still achieves "no leakage, no smoke, and no fire". The on-site media and live broadcast audience all sighed that the battery safety performance of Yaoguang C-DM is strong enough to lead the industry standard.
Suffered 3 times the continuous impact of the national standard
The internal dismantling of Yaoguang C-DM battery is in good condition
At the time of the successful completion of the charge-discharge test in the test vehicle, the field experts made quite positive predictions about the integrity of the battery. However, when the on-site experts disassembled the battery pack from the chassis, the high integrity of the battery still made hundreds of thousands of netizens and professional media unbelievable.
After opening the protective layer under the aluminum alloy, we can see that the MPP impact buffer layer is basically not deformed, and only two dents tell the audience how violent the collision was more than 20 days ago. It is worth mentioning that there is no coolant leakage in the open separator, which once again verifies the strong safety performance of Yaoguang C-DM battery.
After being completely removed, the inside of the battery is fully visible. The neat wiring harness and intact electronic control system are still neatly arranged, and under the protection of the high-strength steel bottom guard plate and the extrusion resistance of 10 tons, not even a single thread or interface is loosened.
Suffered 3 times the continuous impact of the national standard
Yaoguang C-DM vehicle safety design is the first contribution
The battery is intact internally, and the conjecture of the aforementioned test is supported by direct evidence. The Yaoguang C-DM has completely withstood the test of 3 consecutive high-speed impacts, all of which are not only due to the protection of the 6 layers of protection of the battery itself, but also inseparable from the protection of the battery in the safety design of the whole vehicle.
The hybrid chassis of Yaoguang C-DM adheres to the safety strategy of "battery first" from the beginning of the design, and wraps the battery system in the belly core of the chassis. Both the power battery and the high-pressure fuel tank cleverly avoid the lowest point of the chassis, so even during a direct collision at the bottom, the subframe and protective cross member can effectively avoid damage to the battery and fuel tank caused by chassis scratches.
Through the unobstructed body-in-white after cutting the Yaoguang C-DM test vehicle, we can get a glimpse of the energy absorption and protection design of the cage-type energy-absorbing space capsule in response to more complex collision scenarios. The ring-shaped door frame frame, consisting of a thermoformed double seat beam and hot-stamped steel, effectively absorbs and disperses the energy of the collision. A large number of high-strength steels and hot-stamping steels are distributed in undulating positions on the chassis, making energy transfer and absorption more reliable. It is precisely because of these strong passive safety designs that the Yaoguang C-DM not only preserves all the three-electric systems, but also can achieve normal driving again under the J-limited chassis collision condition where the doors of other products of the same level cannot be opened.
The fourth-generation "global hybrid" native hybrid safety design, which performed well in this test, is only one of the many values of Yaoguang C-DM to achieve luxury equality. As the flagship model of the Xingtu brand, the Yaoguang C-DM has won wide recognition in the market since its launch with its product performance of "traveling far, running fast, driving steadily, and being safe enough". After awards such as "China's First Batch of Formaldehyde-free Cockpit Cars", "China Insurance Research Institute C-IASI Full Excellent Rating", "IVISTA China Smart Car Index Five-Star Evaluation" and other awards, this teardown live broadcast further deepened consumers' understanding of Yaoguang's C-DM "safe enough" performance label. Looking forward to the future, with the design concept of "safety is the biggest luxury", Yaoguang C-DM will effectively meet users' concerns in terms of battery life, safety, driving, comfort and other aspects, and bring consumers a high-quality car life with a price of 200,000 yuan and a value of 400,000 yuan.
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