Automotive Electronics Scale Laser Soldering Process

Automotive Electronics Scale Laser Soldering Process

Date：2025-03-27   

Laser soldering technology has reached a high level of maturity, making it the preferred choice for numerous electronic products. This is particularly true for automotive applications where stringent welding quality standards must be met.

Now, let SongSheng Optoelectronics introduce our automated non-contact soldering solution for PCB chips in electronic weighing systems. Discover how our technology can elevate your production process !

Automotive Electronic Sensor Parts Diagram

Principle

Laser welding is a highly efficient and precise welding method that utilizes a high-energy-density laser beam as a heat source. The laser beam is focused on the welding area, causing the material to rapidly absorb the energy. The temperature rises sharply, reaching the material's melting or even boiling point, thereby achieving material fusion and bonding. In automotive electronic weighing systems, the laser beam is typically focused on connection points such as sensors or weighing platforms, enabling high-precision welding.

Advantages

1. High Precision

• The concentrated energy of the laser beam allows for extremely precise welding, producing narrow weld seams and a small heat-affected zone.

• This helps maintain dimensional accuracy and stability in automotive electronic scales, minimizing measurement errors caused by welding deformation.

2. High Strength

• Laser welding produces dense, high-strength weld structures capable of       withstanding various operational loads.

• Ensures long-term reliability and durability of weighing systems.

3. Excellent Sealing Performance

• Creates hermetic welds that prevent moisture, dust, and other environmental       contaminants from entering the scale’s internal components.

• Critical for maintaining consistent performance in harsh automotive environments

4. High  Automation

  Enables seamless integration with automated automotive production lines, significantly improving production efficiency while reducing labor costs and ensuring consistent welding quality.

Songsheng Laser Temp-Controlled Soldering System Diagram

Songsheng Optoelectronics Laser Temperature-Controlled Soldering System Features

1. High-Precision Laser Processing

• Minimum laser spot diameter : 0.1mm

• Capable of soldering micro-spacing mounted components and chip-scale       devices

2. Localized Heating with Minimal Thermal Impact

• Short-duration heating minimizes thermal effects on PCB/substrate and surrounding components

• Customizable heating profiles for different lead types ensure consistent solder       joint quality

3. No Consumable Parts

• Eliminates soldering iron tip replacement

• Enables uninterrupted high-efficiency operation

4. Micron-Level Processing Accuracy

• Laser spot positioning at micrometer resolution

• Program-controlled time/power parameters achieve superior precision vs. conventional irons

• Performs soldering in sub-1mm spaces

5. Coaxial Multi-Optical Path Alignment

• Integrated CCD positioning with "what you see is what you get" alignment

• Eliminates repetitive vision calibration

6. Non-Contact Processing

• No mechanical stress induced by contact soldering

• Electrostatic discharge (ESD) free operation

7. Green Manufacturing Solution

• Laser as clean energy source

• No consumables required with minimal maintenance

• User-friendly operation

8. Lead-Free Soldering Capability

• Zero joint cracking in lead-free applications

Application Scenarios

Sensor Welding: Sensors are critical components in automotive electronic weighing systems. Laser welding can precisely join the elastic body and strain gauge of the sensor, ensuring stable performance and reliable accuracy.

Weighing Platform Welding: Used for splicing and reinforcing the weighing platform to guarantee its flatness and strength, enabling accurate measurement of vehicle weight.