An electric vehicle frame with variable wheelbase

Abstract

The invention discloses an electric vehicle frame with a variable wheelbase, which comprises a front frame, a middle frame, a rear frame, and a variable wheelbase device; the middle frame includes a long longitudinal beam, a short longitudinal beam, and a middle beam. The lower side of the long longitudinal beam is inverted convex, and the upper side is provided with a semicircular groove. Both the front frame and the rear frame contain intermediate longitudinal beams, side longitudinal beams, and cross beams. , the semicircular boss of the middle longitudinal beam matches the semicircular groove of the long longitudinal beam, the two ends of the side longitudinal beam and the short longitudinal beam are nested together and can slide relatively; the variable wheelbase device contains a screw parallel to the middle beam, and the screw rod There is a driven gear in the middle. The driven gear and the driving gear are meshed with each other and driven by a motor. The sliders are arranged on both sides of the driven gear and matched with the screw thread. The beam connection of the rack. The invention has the advantages of variable wheelbase, battery quick-change interface, and battery capacity can be installed according to needs, and can further improve battery efficiency and automobile space utilization rate.

Description

Technical field[0001]The present invention designs an electric vehicle body structure, especially an electric vehicle frame having a variable wheelbase.Background technique[0002]The electric vehicle is rapidly developed in the pressure of zero emissions in the use of zero-emissions, and the current use of electric vehicles has increased by the electric vehicle, and the unit energy can travel. However, it should be shortened, and the excess battery is a mileage burden for short-distance traffic; at the same time, the fixed capacity battery is installed in the car. When the battery is high frequency charge and discharge, the capacity will decrease accordingly, the battery is slow It is at least 8 hours, less than 4 hours, and its charging time is compared to the fuel cart, there is still a low efficiency problem. If high voltage, high current charging, there is an adverse effect on battery life Therefore, under the demand for long-distance high-speed mileage, the electric vehicle is n...

AI Technical Summary

Problems solved by technology

[0002] As a means of transportation with zero emissions in use, electric vehicles have developed rapidly under the pressure of national environmental protection and energy policies. However, it is correspondingly shortened. For the use of short-distance traffic, excessive batteries become a mileage burden; at the same time, most batteries with fixed capacity are installed in the car. When the battery is charged and discharged frequently, the capacity will decrease accordingly. It takes at least 8 hours to charge more, and it takes 4 hours to charge at least. Compared with fuel vehicles, the charging time still has the problem of low efficiency. If high voltage and high current charging is used, it will have an adverse effect on the battery life. Therefore, under the demand of long-distance and high mileage, electric vehicles seem to be powerless, which limits the long-distance use of electric vehicles

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