Market Analysis of 48V Automobile System

The 48V system means that the system voltage is 48V, replacing the traditional lead-acid battery with a power type lithium-ion battery with an energy less than one degree of electricity, and replacing the traditional start-up motor and generator with a BSG motor. In addition to the automatic starting and stopping function, it can also be used when necessary. Provide auxiliary power to the vehicle.

In general, the 48V system consists of three major components: Motors, lithium-ion batteries, and DC-DC converters. The 48V system is generally in parallel with the internal combustion engine. Compared to high-pressure hybrid systems, the 48V micro-hybrid system can provide two-thirds of the total hybrid benefits at one-third of the cost, allowing fuel economy to increase by 15 to 20.

48V can also be used to drive an electric supercharger(e-ger). The electric supercharger replaces the traditional waiting exhaust gas to allow the turbine to reach maximum speed, allowing the acceleration process to be faster and the hysteresis will not be so significant.

Chart 148 VBSG System Architecture

In recent years, Europe's layout on 48V has been relatively positive. In 2013, the European Union approved the 2020 CO2 emission standard, requiring that the average CO2 emission level of new cars be controlled at 95 g/km by 2020, otherwise, it will be subject to high fines. It is also required that 48VBISG startup technology be popularized in Europe by 2020. The EU carbon dioxide emission standards, together with the fourth stage fuel limit standards implemented by China and the US CAFE standards that limit fuel consumption of vehicles, have become accelerators for vehicle manufacturers and parts suppliers to explore energy-saving emission reduction technologies.

In China, according to the ministry of industry and information technology's revised "passenger vehicle fuel consumption limit" and "passenger vehicle fuel consumption evaluation methods and indicators", by 2020, the average passenger vehicle consumption produced by all companies must drop to 5.0 L/100 km. It is basically impossible to achieve the emission target by simply improving the fuel efficiency of the engine. The hybrid and pure electromagnetism of the car are the best technical routes. Although pure electromagnetism is the ultimate goal of the car, it can not be widely used in the short term due to high costs and endurance problems. Therefore, the 48V light mixing system has become the most realistic choice for many companies.

Europe is the main battlefield for the future 48V system. European car companies and parts suppliers are optimistic and their promotion is very positive. If European promotion is successful, China will follow suit. According to projections, the global 48V system will load 11 million vehicles in 2025.

It is expected that by 2025, 48V micro-hybrids will account for more than half of the hybrids. The 48V micro-hybrid battery market has a bright future. It is expected that by 2020, the global market space for 48V system lithium batteries will reach 20 billion yuan.

On the enterprise side, there are already a number of parts manufacturers and vehicle manufacturers are developing and applying 48V micro-mixing systems.

Parts and components enterprises: Mainland Group, Faleiao, Delphi, Bosch, Hitachi, etc.;

Battery enterprises: Lishen, Ningde era, Jiangsen self-control, sail, Universal direction, China Airlines Lithium, etc.;

Vehicle enterprises: Volkswagen, Chang 'an, Geely, Guangzhou Automobile, Great Wall, BYD, FAW and so on.

1. Continental Group

The mainland is the pioneer of the 48V system. The mainland group's 48V micro-mixing system uses the so-called "P0" structure. The system is placed in the position of the original starter motor and is connected to the engine crankshaft through a belt. Therefore, it is very convenient to integrate with existing internal combustion engines. Due to the compact design, the space occupied by this system is only equivalent to the size of a traditional starter motor.

By the end of 2017, Renault Scénik (Landscape) and Grande Scénik (Grand Landscape) will be equipped with a mainland 48V diesel hybrid system. With this system, SCénik's 100-kilometer integrated fuel consumption is only 3.5 liters of diesel, while CO2 emissions have been reduced to 92g/km, and no one in the same class of cars can. This is also the first time that the 48V "hybrid auxiliary system" has been used to produce cars.

2. Bosch

Bosch provides a complete set of solutions for the 48V system: the BRS system (BoostSystem System), and plans to mass-produce in 2017. On May 21, 2016, FIAEELECTS, NewEnergy Communications, German Motorport Association (DMSB) jointly released a Kart car using the Bosch BRS system in Berlin, equipped with two BSGs with a total power of 20 kW and an acceleration of 100 km in less than 5 seconds. This is the application test of Bosch's BRS system for mass production in 2017.

3.deerfu

Delphi is currently launching a 48VBSG system based on the P0 architecture and has been verified in the Honda Civic 1.6 L diesel car to reduce carbon dioxide emissions by more than 10 %.

In April 2016, Delphi announced that it had reached a cooperation with two customers and plans to mass-produce the 48V system in 2017.

4.faleiao

Faleiao provided core components for the 48V lightweight system, including the 48V electric supercharger, BSG, clutch, and DCDC. The Faleiao 48-volt power assembly system consists of a 48-volt electronic supercharger and a 48-volt BSG belt type power generator, which can maximize the recovery of vehicle braking energy.

5. Hitachi

Hitachi completed the basic design of the lithium-ion battery pack for the 48V hybrid car in March 2016. The newly developed 48V lithium-ion battery pack in 2016 has a BMS substrate, battery monomer, Relay, and fuse group loaded in the same box, which has the characteristics of strong assembly and high reliability.

Starting in 2016, Hitachi Automobile System will begin supplying 48V system samples to automotive manufacturer customers and is committed to mass production in 2018.

6.jiangsen

Jensen's 48V micro-hybrid battery system uses a dual-voltage structure design that carries two batteries on a car: a 48V lithium-ion battery and a 12V conventional starter battery. The 48V battery can provide power to higher power loads. The 12V battery can provide continuous power for car start-up, interior and exterior lighting and entertainment systems (such as radios and DVD players).

7 million directions

Wanxiang Group's 48V micro-hybrid battery technology comes from F1 racing's high-power battery technology and was developed on the basis of lithium iron phosphate technology. The battery product has high power characteristics (the battery's core power density is 3 kilowatts per kilogram) and performs well at low temperatures. It can release more power than lead-acid batteries at a minimum of minus 30 degrees Celsius and can reach 5 The life cycle lasting 5 years.

In February 2017, Wan Xiang received an order for 2.6 million sets of 48V Super lithium iron phosphate batteries worth more than US$ 1 billion. The system battery was developed on the basis of the technology of lithium iron phosphate nanometer, and the research of negative electrode material was improved and optimized. The product consists of 14 8-hour batteries with a battery height of 96 mm, a core power density of 3 kilowatts per kilogram and a battery power density of 2 kilowatts per kilogram.

8. Ningde era

In the era of Ningde, three generations of 48V products have been planned. The first generation of products mainly realizes the basic opening, stopping, accelerating, and energy recovery functions, using 12 to 13 times the core of the electric core. The second-generation products will achieve higher fuel saving and emission reduction efficiency, using a 15-30 AMG core pack on the battery, and the third-generation products will provide more electrical functions. The battery will use 25-40 amms. Chip. Its first-generation products are expected to be standardized in mass production in 2017.

9.BYD

In 2013, BYD introduced its own 48V micro-mixing technology, the green mixing system, using 48V lithium iron phosphate batteries. More power devices can be integrated on this 48V voltage platform, such as starting and stopping devices, electric power, and LED lamps. In order to further reduce energy consumption, BYD also applied frequency conversion technology in the home appliance industry to vehicles, such as frequency conversion compressors, frequency conversion pumps, frequency conversion fans, etc.. These frequency conversion devices can eventually achieve the purpose of energy conservation.

In green mixing technology, BYD also uses a low voltage, large torque, double winding motor. The motor can assist the engine to accelerate at a low voltage of 48V(traditional hybrid models require more than 100V of high voltage), thereby reducing fuel consumption and braking or decelerating when taxiing. The motor is used to recover braking energy and charge the iron battery.

Through the use of the 48V voltage platform and the improvement of the entire vehicle electrical equipment, together with the engine start and stop, braking energy recovery, low roll resistance and other technologies, vehicles equipped with green mixing technology can achieve about 1.5 liters of oil savings.

10. Aodi

Aodi's new generation A8 will launch a hybrid version equipped with a 48V lithium battery. This system matches the motor and can have better performance and fuel economy than traditional hybrid models, while vehicles perform such actions as braking. The excess energy generated will be stored in the 48V battery pack. The system will bring a new generation of A8 models to increase power by 16 horsepower and torque by 60 kms. At the same time, under the NEDC test program, the fuel consumption of the new car will also drop by 0.7 L/100km. Audi claims that the hybrid system will be used in other models in its family in the future, such as the new A6, A7 and so on.

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