Front cabin steel-frame structure of electric vehicle and front cabin

Abstract

The invention discloses a front cabin steel-frame structure of an electric vehicle and a front cabin. The front cabin steel-frame structure of the electric vehicle consists of main components: a front cabin left longitudinal beam, a front cabin right longitudinal beam, a transverse connecting beam framework and the like. Moreover, the front cabin steel-frame structure and a subframe are combined to further form upper and lower layer structures of the front cabin of the electric vehicle. An upper layer structure is used for installing various modules: a motor controller, a high and low voltage converter, a direct current-alternating current converter, a charger and the like, and thus, the condition that the modules are arranged in front of or at the rear of a power assembly is avoided, and therefore, an energy absorption space when forward collision of the vehicle occurs is increased, and the safety performance of the vehicle is improved. A lower layer structure is used for installing a motor and a gearbox, and therefore, the danger that the strength is excessively low due to the fact that a suspension device of the power assembly has to be installed on the longitudinal beams to form a cantilever beam structure is avoided, and a flexible space is provided to the arrangement position of the suspension device.

Description

technical field [0001] The invention relates to a front compartment structure of an electric vehicle, more specifically, to a steel frame structure of the front compartment of the electric vehicle and the front compartment including the steel frame structure. Background technique [0002] Compared with traditional cars, the front cabin of electric vehicles has the following problems: First, compared with traditional cars, electric vehicles have added many modules, such as motor control modules, high and low voltage converters, DC-AC converters, chargers, etc. Modules, if these modules are installed in the front or rear of the powertrain, will greatly reduce the collision energy absorption space of the vehicle; secondly, the volume of the electric motor and gearbox of the electric vehicle is smaller than that of the internal combustion engine and gearbox of the traditional vehicle, The distance from the suspension device to the longitudinal beam is relatively long. If the sus...

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Problems solved by technology

[0002] Compared with traditional cars, the front cabin of electric vehicles has the following problems: First, compared with traditional cars, electric vehicles have added many modules, such as motor control modules, high and low voltage converters, DC-AC converters, chargers, etc. Modules, if these modules are installed in the front or rear of the powertrain, will greatly reduce the collision energy absorption space of the vehicle; secondly, the volume of the electric motor and gearbox of the electric vehicle is smaller than that of the internal combustion engine and gearbox of the traditional vehicle, The distance from the suspension device to the longitudinal beam is relatively long. If the suspension device is directly installed on the longitudinal beam like a traditional vehicle, the suspension device bracket will form a cantilever beam, and the strength will be very weak

[0004] However, the technology of the above-mentioned published documents has not completely solved the problems in the design of the front cabin structure of the electric vehicle mentioned above.

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