Looking at China's new energy vehicle market from domestic 48V light-mixed cars
Geely's Borui GE went public, which was not a news, but there is a model in this series that uses a 48V light mixing system, which is the first time that a self-owned brand adopts this technology. Even in the international arena, only Mercedes-Benz and Audi have released related models. Therefore, Geely can be said to be ahead of this time.
Regarding what is a 48V system, there are various kinds of sciences on the Internet, but I found that most of the articles are too professional and not easy to read. To put it simply, what is the use of a 48-cell battery pack and an electric motor in addition to the traditional automotive circuit system? Assist the engine at the right time.
How does the 48V system save fuel?1. The automatic start-stop vehicle automatically turns off when waiting for the red light, and automatically ignites when the green light is used, saving fuel by using the red light. This function 12V circuit can also be realized, but the 12V startup is a little hard, the vehicle will have a pumping and smashing, and the 48V circuit is more powerful, the startup is much easier and the reaction is faster.
2. During the process of energy recovery braking, the kinetic energy of the vehicle is wasted, most of which is converted into heat to make the brake pads hot, and the energy recovery system converts this kinetic energy into electrical energy and stores it in the battery. The energy recovery system is the main energy saving, which can reduce fuel consumption by about 7%.
3. The electric auxiliary engine is particularly fuel-intensive in the low gear stage, but the electric motor is highly efficient in the starting stage, just complementary to the engine, so the motor drive in the initial stage will save a lot of oil, which is especially suitable for congested urban roads.
4. Extinguishing the fire There are some old drivers who use this method to save fuel, but this is dangerous for traditional cars, because the flameout will stop the vehicle's oil pump and cause the brake function to weaken. However, with the 48 volt system, the stalling is not a problem. The 48V system has enough electric power to drive the electric motor and the on-board oil pump to keep the vehicle running normally.
5. The traditional turbocharger of the electronic turbine is driven by the exhaust gas emitted by the engine. However, at low speed, the exhaust gas is weak and is not enough to push the turbine. However, the electronic turbine has no problem of hysteresis, and it is dry up, which improves. The efficiency of the engine at low speed is especially suitable for urban conditions.
The 48V technology was developed by European car companies to combat Japanese hybrid technology. Due to the late development, 48V technology is far from popular. The actual application effect has yet to be verified. According to the 48V system supplier, the current 48V system can save 10%-25%. Representatives are:
Bosch
The official claim that the second generation 48V system can save 12%-19%.
Continental + Schaeffler
The official claim that the second generation 48V system can save 25%.
Delphi
Officials claim that their 48V system can save 10%-15%.
In addition, Valeo, AVL, etc. have also developed a 48V system, but compared with Bosch, there is no essential difference. Overall, the fuel economy is 10%-25%. Of course, this is the theoretical value, practical application. Will be discounted, I personally feel that the current 48V system fuel economy rate of 10%-15% is more credible.
At present, the 15% fuel economy is not very good. The Ralink and Corolla hybrid versions have a fuel economy of 28%. The pure electric life of the plug-in hybrid is enough for the daily driving of the city. But don't forget, Toyota HEV is expensive, the cost is about 12,000 yuan. Plug-in hybrid is more expensive, and the cost is at least 30,000 yuan. The cost of a 48V system is only about 5,000 yuan.
Obviously, if there is no new energy subsidy, the mixed-mix models will not be mixed at all. However, unfortunately, by 2020, the new energy subsidy policy may be cancelled, at least the amount of subsidies will be greatly reduced. By that time, the hybrid models will probably have only Toyota's THS, Honda's i-MMD and European 48V systems.
Which 48V models are available?So, which models on the market currently use 48V light mixing systems? Except for Borui GE, there is really no. Although both Mercedes-Benz and Audi have released the 48V model, they are not officially listed. Moreover, A8 and C300 are not the dishes of ordinary people.
2019 Mercedes CLS
2019 Audi A8
There are also dishes for the common people. Volkswagen announced that the seventh-generation golf hybrid will be equipped with a 48V system, but it is not known when the model is released.
Seventh Generation Golf
The prospect of 48V carI used to have Amway pure electric cars because of the low cost of use and almost no maintenance. However, current pure electric vehicles are only suitable for driving in cities, because once they leave the city, it will become difficult to find charging piles. In addition, cold areas are also suitable, and low temperature will greatly reduce battery performance, resulting in a sharp decline in cruising range.
As for the plug-in hybrid, I have always opposed it, because the price of the plug-in hybrid car is higher, the cost of use is not much, and the maintenance is still the fuel car. Moreover, once the power is used up, the fuel consumption will exceed that of the ordinary fuel vehicle, because the vehicle is loaded with a large group of batteries and the quality of the whole vehicle is large.
Today's protagonist, the 48V system, does a relatively better balance between fuel economy and cost. You don't have to pay a high price for it, but it can save considerable fuel costs. And the 48V system allows the hybrid car to retain the structure of the traditional car as much as possible without reducing the driving experience. Therefore, I believe that the 48V hybrid car will have a promising future and will become a mainstream of hybrid models.
Normal Electric Test Pen,Screw-Driver With Voltage Tester,Combination Screw Driver Set With Tester,Voltage Detector Tester
YINTE TOOLS (NINGBO) CO., LTD , https://www.yinte-tools.com