Classification and application of automotive PCBs

Classification and application of automotive PCBs

The automotive industry is currently undergoing a change. The development of autonomous driving technology and new energy vehicles, and the automotive field, has ushered in new opportunities. This also drives the development of the entire automotive electronic PCB industry. Data show that the growth rate of global PCB demand is higher than the overall PCB demand. Demand for automotive PCBs will increase from US$ 6.5 billion in 2020 to US$ 9.5 billion in 2025. The CAGR will be 7.6%, which is higher than the overall PCB growth rate of 1.8PCT. It is expected that the proportion of automotive PCBs will increase from 10% in 2020 to 2025. The year will be 11%. For more knowledge about car electronic PCB, let’s understand together.

What is a car electronic PCB?
PCB is called a printed circuit board, also known as a printed circuit board. It is an important electronic component. It is mainly composed of two types of materials: insulating substrates and conductors, which play a role in supporting and interconnecting electronic devices.

Automotive PCB refers to PCBs dedicated to the field of automotive electronics. PCB mainly includes the four major systems: power control system, security control system, body electronic system, and entertainment communication. Therefore, PCB requirements include both low-cost and low-reliability products.

Car Electronic PCB is generally divided into two categories:
1. Automotive electronic control cannot work effectively before cooperating with the mechanical system (such as motors, chassis and vehicle digital control), especially the electronic fuel injection system, anti-lock braking system (ABS), anti-slip control (ASC) control, electronic control suspension (ECS), electronic automatic transmission (EAT) and electronic power steering (EPS).

2. In the automotive environment, it can be used independently and has nothing to do with vehicle performance, including automotive information systems or automotive computers, GPS systems, automotive video systems, automotive communication systems and Internet equipment. The function is implemented by a device supported by HDI PCB, which is responsible for signal transmission and multiple controls.

Auto PCB application

In the field of traditional automobiles, PCB is widely used for airbag components, steering control components, central control, light control components, radar, electronic instrument panel, navigation system, sunroof control components, window control components, etc.

Unlike the traditional combustion of the vehicle mobile system, the new car uses electricity, the electrical control system (microcontroller unit MCJ, vehicle -controlled MCU, electric business BMS) will generate PCB replacement increase, and the value of the bike will exceed 2,000 yuan. Motors are further developing in the direction of placement, lightweight, etc. Car PCBs will increase units such as cameras and flexible circuit boards, and more PCB products will be used inside electric vehicles.

The following is the specific source of incremental automotive PCBs: mainly three major power control systems (BMS, VCU, MCU).
VCU: It consists of control circuits and algorithm software. It is the control center of the power system. The role is to monitor the condition of the vehicle and implement the vehicle power control decision. The control circuit in the VCU needs to be used for PCB, and the dosage is about 0.03 square meters.
MCU: It consists of control circuits and algorithms. It is an important unit of the new energy vehicle electrical control system. The role is that the decision made by VCU refers to the operation of the motor today. The house is about 015 square meters.

BMS: BMS is 3 groups in Electric Rhythm. Tao voltage, current, temperature 0 (equivalent charge to collection calculation, power generation and charging, realize the joint venture for electric furnaces, BMS control BC and BMU), inside the security, use the detection monomer voltage, current and balance: The motherboard egg is flexible, used for electrical, load-electrical value S0C), and electrical damage protection. Its local circuit board is high, and its role is to meet the voltage, current and other indicators of single-electric foam, to achieve balanced control, and prevent damage such as overcurrent and other BMS damage. . 24 square meters, and the unit management unit is 2-3 square meters.

Classification and application of automotive PCBs

Application of automotive HDI PCB

The HDI board on the PCB board has a high degree of correlation with the intelligent car, and it is also used in PCB cars. HDI itself has the characteristics of high precision, small volume. Following the continuous development of the car, iterative updating, HDI has developed rapidly.
The HDI board itself is a circuit board with a relatively high circuit density with micro blind burial technology. Production requires drilling and metalization in the hole. In addition, the general HDI board is made by stacking method. The high-end HDI uses two or more accumulated technologies, and at the same time, advanced PCB technology such as stacked holes, plating, and laser direct punching. The HDI board is conducive to the use of installation technology first. Its electrical performance and signal correctness are higher than that of traditional PCB, and its radio frequency interference, electromagnetic wave interference, static release, and thermal conductivity are better, which is more suitable for the use of the automotive field.
HDI’s increased interconnection density allows for enhanced signal strength and reliability, as well as full digital signal process control technology and more.

Car PCB market prospects are broad.
The global automotive PCB market has continued to grow. According to Verify Market Research, 2021-2028 will maintain the growth of the PCB market in 2021-2028, and the CAGR interval will be 5.30%. The market size will increase from $ 7.81 billion in 2020 to $ 12.48 billion in 2028. The Asia -Pacific region is the largest and fastest growing market. From the perspective of the region, the PCB market size in the Asia-Pacific region ranks first in the world, accounting for 38% of the world market share. At the same time, Mordor Intelligence predicts that the Asia Pacific market will become the highest growth market in the future. Among them, we believe that the Chinese market will also become a fast-growing market with opportunities.

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