Automotive Electronic PCB
Automotive electronic products have different reliability requirements for printed circuit board(PCB) in different parts.HUIHE Circuits pass IATF16949 Automotive quality Management system Standard.
Strictly comply with the requirements of the control plan for production, monitoring, recording and analysis.Ensure the stability of process parameters and traceability of production process.
Classification Of Automobile PCB Circuit Boards
Car body electronic control system
Engine Control System
Ignition control system
Fuel control system
Air supply system
Body Control System
Power management system
Safety management system
Lighting system
Display monitoring system
Chassis Control System
ABS control system
Electronic stabilization system
Feed pressure monitoring system
Steering control system
On-Board Electronic Control System
Car TV
Driving recorder
Reversing radar system
Vehicle navigation system
Vehicle camera system
Automobile Electrification And Intelligence Will Be The Core Driving Force
High Frequency Substrate Corresponding To 24GHz System
| Manufacturer's | Product brand number | Resin composition type | Dk (below 10GHz) | Df（below 10GHz） | Dk thermal change rate ppm/ ℃ |
| Rogers | RO4835 | hydrocarbons | 3.48±0.05 | 0.0037 | +50（-50~150℃） |
| Taconic | TLF-35A | PTFE | 3.5 | 0.0016 | |
| Shengyi Technology | S7136H | hydrocarbons | 3.42±0.05 | 0.003 |
High Frequency Substrate Corresponding To 77GHz (or 79GHz) System.
| Manufacturer's | Product brand number | Resin composition type | Dk (below 10GHz) | Df（below 10GHz） | Dk thermal change rate ppm/ ℃ |
|
Rogers |
RO3003 |
PTFE+ ceramic (without glass fiber) |
3±0.04 |
0.001 |
-3 (-50~150℃) |
| Taconic | TSM-DS3 | PTFE | (Tk) 5.4 (-30~120℃) | 0.0011 | (Tk) 5.4 (-30~120℃) |
| Taconic | TAL-28 | PTFE+ nano-filler | 2.8 | 0.0012 | (Tk) 2.24(-30~120℃) |
| Shengyi Technology | GF77G | PTFE | 2.28±0.04 | 0.0012 |
PCB Consumption And Value Of New Energy Vehicles
The amount and value of PCB of new energy vehicles have increased significantly. At this stage, the demand for PCB of traditional cars is small, and the value of PCB is also relatively low, mainly because the power system demand PCB is the most, accounting for 32%. By comparison, the average PCB consumption of traditional cars is about 1 square meter, with a value of about $60, while that of high-end models, PCB is 2-3 square meters, with a value of about $120-130. while the new energy vehicle PCB uses nearly 8 square meters, the value of a bike is as high as $400.
Four Major Systems And Subsystems Of Automotive Electronics
| System | Subsystem | PCB proportion |
|
Power control system |
Ignition control system, fuel injection control system, engine idle control system, exhaust gas recirculation system, anti-lock control system |
50% |
|
Safety control system |
Automatic transmission control system, suspension electronic system, power steering electronic control system, cruise control system |
22% |
|
Body electronic system |
Automatic air conditioning system, electronic instrument system, airbag system, automobile electronic anti-theft system, head-up display system |
25% |
|
Entertainment communication system |
Electronic instrument system, car audio system, vehicle navigation system, electronic map system |
3% |
HUIHE Circuits are well aware that the reliability of automotive electronics is equal to that of automobiles, so it is necessary to ensure that the reliability of automotive electronics meets the requirements of service life and environmental tolerance:
◆ PCB used in automotive electronic systems has to withstand a variety of environmental changes, such as temperature and humidity, climate, acid fog, vibration, electromagnetic interference, current shock, etc.
◆ In order to ensure the normal life cycle, PCB needs to meet the characteristics and requirements of high reliability, high integration, high heat dissipation, high current (thick copper pcb), lightweight miniaturization, embedded devices and so on. For example, the high-voltage control system of the new energy electric vehicle integrates the original scattered high-voltage device parts, scattered DC/ charge and discharge / MCU and other functional parts into one PCB by using a strong current plate, which increases the density several times, but saves 30% in the structural space.
HUIHE Circuits takes the following measures to ensure the reliability of PCB for automotive electronics:
◆ Pass IATF16949 automobile quality management system standard.
◆ Selection of appropriate materials and production processes, reliability testing and testing.
◆ At the time of project planning, select the appropriate materials according to the use parts of automotive electronic products.
◆ Strictly comply with the requirements of the control plan for production, monitoring and recording.
◆ Monitoring and analysis of key processes and characteristics using SPC.
◆ Ensure the stability of process parameters and the traceability of production process.
◆ Based on the IPC-TM-650 standard, a set of systematic and strict product performance testing methods and evaluation mechanisms are established, including thermal cycle test, high temperature thermal shock, salt spray test, high current shock, high voltage resistance, electromigration and so on.
