- Mar 28, 2018 -
At the present stage, the electronic degree of traditional automobile is not high, and the demand for PCB is small. The cost of PCB is about 2% of the total cost of electronic device. The average PCB consumption of each vehicle is about 1 square meter, worth 60 US dollars. High-end models in 2-3 square meters, worth about 120-130 U. S. dollars.
Among the electronic components of traditional automobile, the PCB of power system is the most, and its share is 32. It mainly includes engine control unit, starter, generator, transmission control device, fuel injection, power steering system and so on. Car body electronic system 25, mainly including automobile lighting HVAC, power doors and seats, TPMS, etc.; Safety control system, about 22 percent, mainly including ADASA ABS, airbags, etc. Others also include display, entertainment and other on-board electronic systems.
Compared with the traditional vehicle, the new energy vehicle has a significant increase in demand for PCB because of its unique power system.
New energy vehicles are mainly divided into pure electric vehicles and hybrid electric vehicles. The power system of pure electric vehicles is only composed of motors and power batteries, and the driving system is simple. In the normal driving process, it is mainly driven by the fuel engine, and when the electricity is sufficient, the electric drive is used in the power system of the pure electric vehicle, which will completely replace the drive system of the traditional car, so the PCB substitution increment is produced. This part of the substitution increment is mainly from the electric control system MCU VCUU BMS. For hybrid electric vehicles, a new electric drive system is introduced while the traditional vehicle drive system is retained, thus the superposition increment of vehicle PCB will also be generated.
It can be seen that the increment of PCB value brought by the new energy vehicle includes two parts, that is, the superposition increment brought by the hybrid electric vehicle and the substitution increment brought by the pure electric vehicle. The superposition increment produced by hybrid electric vehicle is basically the same as that produced by pure electric vehicle. Therefore, in the subsequent incremental calculation of automobile plates, no distinction is made between hybrid vehicles and pure electric vehicles. Whether hybrid or pure electric, The specific sources of the PCB increment are mainly three power control systems, BMS VCU and MCU: VCUU: it is composed of control circuit and algorithm software. It is the control center of the power system and its function is to monitor the status of the vehicle. PCBs are needed to implement the control circuit in the whole vehicle power control decision .VCU. MCU is composed of control circuit and algorithm software, which is an important unit of electric control system of new energy vehicle. The function is to control the motor operation according to the decision instruction issued by VCU, so that the PCB consumption of the control circuit in VCU is about 0. 15 square meters. BMS:BMS is the core component of the battery unit. The parameters such as temperature and SOC are collected and calculated to control the charging and discharging process of the battery, to realize the protection and comprehensive management of the battery. The hardware consists of the main control BCUU and the slave control BMU. The slave control is installed inside the module to detect the cell voltage. Current and equalization control; motherboard position is flexible, used for relay control, charge state value (SOC) estimation, electrical damage protection, etc. BMS generally uses more stable multilayer boards, The function of the unit is to monitor the voltage and current of the single cell, to realize the equalization control, to prevent the over-voltage and overcurrent from damaging the battery life and performance. A large number of PCBs need to be used. The consumption of the main control circuit is about 0.24 square meters, and the monomer management unit is 2-3 square meters. Because different control units have different process requirements for the PCB board, the price of the products also varies greatly. For example, the unit price of the main control circuit board can be as high as 20000 yuan / square meter, and the price of the slave board is about 1500-2000 yuan / square meter, while the PCB used in VCU and MCU is a common board, and the added value is not high, the price is 1000 yuan / square meter. At the same time, The number of individual management units of various BMS is different, which leads to the difference of the PCB consumption of different models, which is about 3-5 square meters on average, and the PCB consumption of the whole vehicle is between 5-8 square meters, the value is about 2000 yuan, which is much higher than that of the traditional high class car.
In recent years, the global new energy passenger car market has developed rapidly. According to statistics, the global new energy passenger car sales volume in 2013 was only 147000. From 2014 to 2016, the global new energy passenger car sales were 350000, 550000 and 770000 respectively. The annual compound growth rate is as high as 48.3%.
As the world's largest new energy vehicle market, China's market scale expanded faster than the global average in 2015-2016, and the domestic production of new energy vehicles reached 379,000 and 517,000, respectively, taking into account policy objectives. Due to factors such as the impact of the credit system and the sales planning of auto companies, the domestic production of new energy vehicles in 2017-2020 is conservatively estimated to be 700000, 1 million, 1.2 million and 1.5 million respectively. The corresponding market penetration rate will gradually increase to about 5 percent. Based on this, by 2020, New energy vehicles have brought at least 3 billion yuan in market increments to the domestic auto plate market. According to the Global Energy Agency, according to IEA, the total sales of new energy vehicles worldwide will reach 6 million by 2020. In this way, the new energy vehicles will bring nearly 12 billion market increment to the global automobile board market.
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