How to install high power bi-directional DCDC on electric vehicles

We recommend the country to green travel, many people also like living in the city, if we always drive to work or work out, because the road itself is very crowded, all their time wasted in traffic jams, so I want to use a better way to solve the problem of travel.
We will find that in many cities, electric cars are very popular. Because of its small size, we usually use it in a relatively high degree of convenience. But in the course of the use of electric cars, one problem is that most people have a headache, that is, its electricity consumption is too fast. It may not be long enough, and the electric power of his own electric car is completely consumed. For the use of your own, it will have a certain impact.
To solve this problem, we can also improve it. For example, we can install a high-power bidirectional DC DC on the electric car, so that he can use the way of frequency conversion to save the electricity we use. But when high power two-way DC DC is being installed, we have to find professional people to help operate, because if we install problems, it will cause some damage to the electric vehicle and the use of electric vehicles. There must be a professional staff to install.