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Automotive Electronics

Automotive Electronic PCB

Automotive electronic products have different reliability requirements for 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. 

1-pcb电路板线路板生产厂家汇和电路 (4)

Classification Of Automobile 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), 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.