Automotive PCB Applications

    Automotive PCB Applications power control system, body sensor, navigation system, entertainment system, navigation system and other new energy vehicles. The value of the automotive PCB brought by the vehicle controller (VCU), motor controller (MCU) and battery management system (BMS) of new energy vehicles has increased by more than 2,000 RMB, which greatly exceeds the increase brought by intelligence and light weight. Therefore, in addition to the upgrading of automotive electronics, the rapid penetration of new energy vehicles in the support of national policies will constitute the main growth point of automotive PCBs.

Electronic Control

The PCB increase of electric vehicles mainly comes from the vehicle controller VCU, micro control unit MCU, and battery management system BMS.

VCU

Composed of control circuits and algorithm software, it is the control center of the power system. Its function is to monitor the vehicle status and implement vehicle power decisions. The PCB consumption of the car alone is about 0.03 square meters.

MCU

Composed of control circuits and algorithm software, it is an important unit of the electric control system of new energy vehicles. Its function is to control the operation of the motor according to the decision-making instructions issued by the VCU, so that it can output the required AC power according to the VCU instructions. 

BMS

The core component in the battery unit, through the collection and calculation of parameters such as voltage, current, temperature and SOC, and then control the charging and discharging process of the battery, and realize the protection and comprehensive management of the battery. The BMS hardware consists of the main control (BCU) and the slave control (BMU). Due to the complex structure of the BMS, a large number of automotive PCBs are required. 

Electric Drive

It consists of a motor, a transmission mechanism and a converter. The automotive PCB is mainly used in the inverter and DC/DC devices in the converter. The motor is mainly responsible for the mutual conversion of electrical energy and mechanical energy; the transmission mechanism transmits the torque and speed output by the motor to the main shaft of the car to drive the car; the converter mainly includes two devices, an inverter and a DC/DC, both of which require the protection of the automotive PCB and supports, greatly increasing the usage of automotive PCB. 

FPC for Power Batteries

The trend of FPC replacing copper wire harness is clear, and the value of a single automotive PCB is about 600 RMB. The acquisition line is an important part of the new energy vehicle BMS system, which can monitor the voltage and temperature of the new energy power battery cell; connect data acquisition and transmission with its own overcurrent protection function; protect the vehicle power battery cell from abnormal short circuit automatic disconnection and other functions. The trend of FPC replacing copper wire harness is clear. Ningde Times and BYD, which are the first echelons of domestic power batteries, have already applied FPC in batches in packs as early as 2018. 

Smart Driving

The demand for millimeter-wave radar is growing rapidly, which is expected to contribute a significant increase to high-frequency automotive PCBs, and the value of a single vehicle will reach about 150 RMB. Millimeter-wave radar is widely used in the perception layer of autonomous driving and is an important component of autonomous vehicles. The L2 level requires 5 millimeter-wave radars of "1 long + 4 short", and the L3-L5 level requires 8 millimeter-wave radars of "2 long + 6 short". In the future, the number of cars per vehicle will increase significantly with the rapid penetration of ADAS. 

Smart Cockpit

The electronic system is the key to human-vehicle interaction. Large-screen, integrated and intelligent vehicle-mounted screens increase the demand for automotive PCBs. With the deepening of the integration of Internet technology and automotive technology, automotive display screens will bring more and more convenient functions and experiences to drivers and passengers. More and more new technologies such as head-up display, 3D touch, and human-computer interaction are integrated on the display screen to provide users with a better driving and entertainment experience. Technology and automotive PCB market demand will stimulate the development of the automotive display market.

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