The Electric Wheelchair PCBA serves as the central component housing critical functions like control systems, power management, and motor drive in electric wheelchairs. This discussion focuses on the technical specifications, design considerations, manufacturing processes, and testing procedures essential for ensuring optimal performance and reliability.

I. Technical Specifications and Operating Environment:

1. Electric Wheelchair Parameters:
   • Maximum Load: 100 kg to 150 kg.
   • Maximum Speed: 6 km/h to 10 km/h.
   • Maximum Driving Range: 20 km to 30 km.
   • Charging Time: 6 to 8 hours.
   • Battery Types: Lead-acid or lithium batteries.
2. Operating Environment:
   • Suitable for flat indoor and outdoor surfaces.
   • Temperature Range: 0°C to 40°C.
   • Humidity Range: 20% to 80%.

II. Design and Manufacturing Characteristics:

1. Versatility:
   • Integration of functional modules (motor drive, battery management, control system) for comprehensive electric wheelchair functionality.
2. Stability and Reliability:
   • Ensuring stable performance and reliable operation for the safety of electric wheelchair users.
   • Rational design and component selection to enhance stability and reliability.
3. Low Power and High Performance:
   • Balancing power consumption and performance to extend battery life and improve driving range.
4. Size and Layout:
   • Accommodating structural and space limitations in the electric wheelchair.
   • Planning module positions and connections for compactness and maintainability.

III. Production Process Considerations:

1. PCB Design:
   • Considering size, layout, and circuit board levels to isolate key circuits from noise sources.
   • Preventing interference and crosstalk to ensure signal integrity.
2. Component Selection:
   • Choosing quality components, such as motor driver chips and sensors, for reliability and safety.
3. Welding Process:
   • Monitoring welding temperature, time, and quality to ensure reliable solder joints and circuit board stability.
4. Circuit Protection:
   • Incorporating over-current, over-voltage, and low voltage protection for safe operation.
5. Testing and Quality Control:
   • Rigorous testing during production, including functional, performance, and reliability testing.
   • Establishing a quality control system to meet standards and requirements.

IV. PCBA Testing for Electric Wheelchair:

1. Circuit Connectivity Test:
   • Verifying normal connections between components, including solder joint quality.
2. Functional Test:
   • Confirming the normal operation of functions like motor drive, battery management, and control system.
3. Performance Test:
   • Evaluating performance indicators, including speed, mileage, and carrying capacity.
4. Reliability Test:
   • Assessing PCBA reliability in various conditions through vibration, temperature cycle, and humidity tests.

Conclusion: Designing and manufacturing Electric Wheelchair PCBA demand meticulous attention to technical specifications, design considerations, production processes, and thorough testing procedures to ensure optimal performance, reliability, and user safety.