According to the European Union's decision that new cars sold must be equipped with electric drive systems by 2035, this shows that Europe has taken an important step towards sustainable mobility. The pressure to innovate is a major challenge from a quality assurance perspective for automotive manufacturers and their suppliers. With the use of optical 3D measurement technology, a large number of measurement tasks in the testing of safety-relevant materials and components have been solved. The following is an interview with Product Manager Dr. Oliver Witzel.
Dr. Oliver Witzel 博士的采访内容
Q: As new technologies continue to emerge, security is becoming more and more important. How does ZEISS ARAMIS help R&D experts evaluate and improve the safety of electric vehicles?
A: Basically, the ARAMIS product family consists of optical 3D sensors that capture deformations and any movement of parts and materials with high accuracy. In addition, the powerful digital image correlation software ZEISS INSPECT Correlate Pro enables precise analysis of strain, displacement, rotation, etc. Regardless of the drive system used in the car, ZEISS ARAMIS helps with a wide range of component testing and measurement tasks.
Q: Can you give an example of an application in the field of electric vehicles?
A: When it comes to electric vehicles, battery modules are crucial when it comes to safety. Currently, we are using the high-speed system ZEISS ARAMIS SRX to study the stiffness of the battery housing. This parameter is a key factor in evaluating its ability to protect high-voltage batteries from damage. During crash tests, the system captures the deformation behavior of components at speeds of up to 1,000 measurements per second. It also enables a precise analysis of the displacement of each battery module. Of course, crash testing is just one of the many potential applications of ZEISS ARAMIS.
Q: Are there any other battery module tests related?
A: Vibrations can affect high-voltage batteries and their housings during production, transportation, and even when operating electric vehicles. Vibrations can interfere with the function of the entire battery module. As a result, vibrations can adversely affect the position of the battery cells in the housing, which affects the output power of the motor and the efficiency of the overall system. In this case, the natural frequencies of the housing can be determined by means of scanners from the ARAMIS product family and the operating deformation analysis can be performed. With these measurements, one of the most important and at the same time largest components of an electric vehicle can be optimized.
▲Displacement on the z-axis of the battery tray. DURING THE DROP WEIGHT IMPACT TEST, THE ZEISS ARAMIS MEASUREMENT IS USED FOR THE WORKING DEFORMATION ANALYSIS
▲Displacement on the z-axis of the battery tray. DURING THE DROP WEIGHT IMPACT TEST, THE ZEISS ARAMIS MEASUREMENT IS USED FOR THE WORKING DEFORMATION ANALYSIS
▲Working deformation analysis on the z-axis
As systems become more complex, will material and component testing requirements become more stringent?
Of course, the choice of materials is important in the race for product innovation, and above all, the smooth interaction between the components is the decisive factor for success. Testing increasingly small components is a major challenge in the engineering world, and this challenge can be met with the new ZEISS ARAMIS Adjustable 24M. Paired with two high-resolution cameras with 24 million pixels and a frame rate of 100 fps, the system is ideal for full-field analysis of small surface changes. This is critical, for example, when determining the coefficient of thermal expansion and the effects of heat load in electronic component testing.