Advantages of using laser welding process for automotive electronic sensors
Sensor is a kind of signal conversion device to convert the measured into measurable, usually by the sensitive element, conversion original, signal conditioning and conversion circuit and other auxiliary components. The automotive sensor is a device that converts non-electrical signals into electrical signals and transmits a variety of working condition information to the car, which is the core hardware for realizing the intelligent driving of the car.
In the various application fields of automotive sensors, the mainstream program of LiDAR market is hybrid solid state, solid state, chip-based architecture is the future development trend, industry chain in the domestic analog chip and FPGA master link there is a certain gap; millimeter-wave radar technology barriers are higher, the domestic manufacturers have made breakthroughs in the field of machine and SOC chip; car camera CIS cost accounted for more than 50%, Chinese manufacturers have the strength to participate in the international competition. Manufacturers have the strength to participate in international competition; ultrasonic radar development is more mature, has been localized, the upstream chip link there is still a gap; MEMS sensors sealing costs usually account for more than half of the total cost of design and manufacturing and foreign gaps are obvious, encapsulation link is usually by the traditional IC packaging enterprises OEM, the domestic more leading.
Laser welding application of automotive electronic sensors
With the development of laser technology and automation technology and the mature application of the sensor production process, to master the core technology of laser welding, mainly domestic enterprises, in order to further solve the traditional process of sensors, low accuracy, poor stability and other issues play a major role.
Laser soldering adopts laser as the welding heat source, which has the advantages of high energy density, centralized heating, fast welding speed and small welding deformation. Due to the products covered by the current automotive electronic sensors, any components contained therein may be involved in the soldering process, ranging from large PCB board masters to small crystal oscillator components, and the vast majority of the soldering needs to be completed at below 300℃. With its unique advantages, laser welding is particularly suitable for use in automotive electronic sensors.
After the use of laser welding, the sensor within the PCB board plugs smooth surface without defects, solder joints full of no pull-tip barbs and the base material is comparable to the welding process will not lead to the sensor inside the photosensitive components damage, the appearance of the effect and the plugs through the tin is very good.
As the head of the laser welding niche field deep plowing for many years, Zichen laser tin wire, solder paste, tin ball soldering machine for automotive electronic sensors precision welding, tin ball diameter of a minimum of 0.05mm, in line with the integration, precision development trend, the heat affected zone is small, small deformation; at the same time can be completed through the selection of the size of the ball of tin soldering of different welding joints to meet the needs of more products; tin soldering welding has a rapid heating, Tin welding has the characteristics of rapid heating, rapid cooling, can be welded to produce a more uniform and small metal compounds, better performance of the welded joints; and with the CCD positioning system, you can reduce the original production staffing and workload, improve production efficiency and capacity, and really help enterprises to improve quality and efficiency.
