suzhou dsm green power co., ltd-尊龙人生就是博首页

     with the end of 2016, the old subsidy policy for new energy vehicles also expired. for the 2017 subsidy policy, although there are different versions of the content, but one thing is clear - from 2017 onwards, new energy passenger car subsidies at least 20% decline, and new energy passenger car subsidies will be substantially reduced. this trend is not the gradual withdrawal of the government policy to encourage the development of new energy vehicles, but gradually encourage and promote the development of new energy vehicles technology, to achieve new energy vehicles from simple to qualitative improvement.

     the development of new energy vehicles therefore needs to face a reality: the market expectations of driving mileage are higher and higher, and the reduction of battery capacity caused by subsidies will start to reduce driving mileage, such contradictions will inevitably become the theme of the development of new energy vehicles industry in 2017. to address this contradiction, more car manufacturers will begin to develop plug-in hybrid vehicles (including range extender) that require smaller batteries but have longer integrated mileage. it is foreseeable that 2017 will be the first year of china's plug-in hybrid technology development.

     plug-in hybrid technology generally requires relatively small battery packs, so that pure electric mileage meets most daily travel needs (80-100 km), and occasionally longer mileage (250-300 km) travel still uses fuel engine power, so that the integrated mileage meets. most cross-city trips are demanded, and there is no fear of a pure electric car lying on its back ("mileage anxiety"). 

     the so-called plug-in hybrid technology generally includes two main branches, namely:

plug in hybrid power (fuel powered, electrically assisted)

range extended pure electric power (pure electric drive, fuel power assisted)

     considering the cost of the product, the comprehensive fuel efficiency, the difficulty of vehicle integration and the development cycle, it is easier for many small and medium-sized new energy vehicle factories to adopt the range exender technology. at present, large-scale traditional automobile factories such as beijing automobile new energy, geely automobile, guangzhou automobile and so on have already started the development and investment of the power system of the range extender. chery new energy, the third qualified car manufacturer, was the earliest in china to develop extended range power systems. min'an, the fifth qualified car manufacturer, developed range extended suv technology early in its development, and wanxiang group, which got the sixth qualification, invested and acquired the technology of the range extender in the united states very early and took the development of res as the main development goal.

     there are also a variety of implementation paths for the range extending technology. there are two general categories: pure electric drive series mixing and pure electric drive auxiliary, which are mainly formed by the space and cost constraints on the vehicle. among them,

     the advantage of pure electric drive series mixing (the power generation of the extended range power system matches the power of the electric vehicle driving motor) is that the integrated driving range is no longer limited, but the disadvantages are that it requires higher system cost (high power system cost) and larger installation space (high power system volume).

 
     (the power of the extended range power system is much lower than the driving power of the electric vehicle.)the advantage of the extended range power system is that the system power is relatively small, so the cost is low and the installation space is small. the disadvantage is that the integrated range is limited, such as bmw-i3.

     the core of choosing different implementation paths is the need of integrated driving mileage. in general, private passenger cars are more likely to choose unlimited mileage (extended range pure electric series mixing or plug-in hybrid power); while the fleet of commercial vehicles or special vehicles are more cost-effective, in order to meet the daily driving mileage requirements of more options extended range pure electric auxiliary technology route.

     the following are several extended range pure electric drive auxiliary configurations.

1. 2.5 tons of box type logistics -- performance comparison between electric and range extended

2. 7m bus -- performance comparison between electric and range extender