Abstract: What are the unknown and invisible escorts behind the new energy vehicles in China that have refreshed their performance ceiling?

Xiaomi released SU7 Ultra, and its powerful performance has caused heated discussions. Competition in new energy vehicle technology is fierce, and high-precision measuring instruments and sensor technology are crucial. Among them, Atometrics can provide a series of high-precision detection solutions such as pole piece thickness, scratch, burr detection, PACK chassis, and MEMS sensor three-dimensional morphology.

On February 27, Xiaomi released the pinnacle of its SU7 series, the Ultra, which is equipped with a self-developed super three-motor system (dual V8s + V6s), with a maximum output of 1,548 horsepower, a 0-100 acceleration of 1.98 seconds (excluding starting time), and a top speed of 359km/h.

Such powerful performance, coupled with a starting price of 529,900 yuan, has sparked heated discussions from all walks of life and even refreshed the sales record of domestic high-end electric vehicles.

Source: Xiaomi

Behind the powerful performance of Xiaomi SU7 Ultra is the fierce technological involution in the new energy vehicle track. This is not only a technical competition of batteries, motors, etc., but also a "nano-level safety net" woven by countless precision measurement technologies.

Next, Dr. Atometrics will introduce the high-precision measuring instruments and sensor technologies behind the research and development and manufacturing of new energy vehicles.

• Pole piece thickness

The thickness of the electrode directly affects the distribution of active materials and the efficiency of lithium ion transmission. If the thickness is uneven, it will lead to reduced battery capacity, decreased charging and discharging efficiency, and even affect the energy density.

Atometrics Displacement Sensor - Pole Thickness Detection Solution

Source: Atometrics laser displacement sensor

• Pole scratch depth

The depth of scratches on the pole piece will directly affect the structural integrity of the pole piece. Scratches that are too deep may penetrate the pole piece coating and affect performance and safety.

Atometrics 3D laser profiler sensor - Pole Scratch Depth Detection Solution

Source: Atometrics 3D laser profiler sensor AR-9000 series

• Pole burr

The pole pieces of lithium batteries in new energy vehicles are all wound. If there are burrs on the pole pieces, they will break through the pole pieces, causing safety hazards such as short circuits, fires, and explosions. Therefore, it is necessary to observe the burrs on the pole pieces.

Atometrics Super Large Depth of Field Microscope - Pole Burr Detection Solution

Source: Atometrics digital microscope AH3000 series

• PACK chassis

The PACK battery pack of new energy vehicles is usually highly integrated with the chassis, becoming the core part of the vehicle structure, directly affecting the vehicle safety and performance stability. The integrated design of the PACK chassis (such as CTC technology) enables the battery pack to be deeply integrated with the body structure, and its coordinated reliability needs to be ensured, so the PACK chassis needs to be tested.

Atometrics 3D laser profiler sensor - PACK Chassis Gluing Testing Solution

Source: Atometrics 3D laser profiler sensor AR9000 series

• MEMS sensor 3D topography

MEMS sensors are closely related to the performance of new energy vehicles, and play an important role in improving the safety and efficiency of power systems, supporting intelligent driving and autonomous driving functions, enhancing vehicle safety performance, optimizing energy management and endurance.

Among them, the topography detection of automotive-grade MEMS devices is the key to ensuring that they meet stringent automotive standards (such as AEC-Q103), directly guaranteeing the safety and reliability of core systems such as battery management and autonomous driving of new energy vehicles, while improving mass production consistency through micro-defect control to avoid safety hazards caused by structural failure.

Atometrics White Light Interferometer - MEMS Device Three-Dimensional Topography Detection Solution

Source: Atometrics white light interferometer AM7000 series

The AM series of white light interferometers are widely used in the new energy vehicle industry. In addition to the above applications, more cases are as follows:

LiDAR,HUD glass surface roughness and Radius of curvature of headlight beads measurement

To learn more about testing cases, please subscribe to us or visit Atometrics website.