Front cabin arrangement structure of pure electric automobile

Abstract

The invention discloses a front cabin arrangement structure of a pure electric automobile. The front cabin arrangement structure comprises a left longitudinal beam, a right longitudinal beam, a crossbeam, an electric drive assembly, a vacuum system, a power supply system, a low-voltage electrical appliance component, a thermal management system and an auxiliary frame. The cross beam comprises anupper cross beam assembly and a lower cross beam. The two ends of the upper cross beam assembly are correspondingly connected with the upper surfaces of the left cross beam and the right cross beam. The two ends of the lower cross beam are correspondingly connected with the lower surfaces of the left cross beam and the right cross beam. The front portion of the electric drive assembly is connectedwith the lower cross beam. The rear portion of the electric drive assembly is connected with the auxiliary frame. The vacuum system, the power supply system, the low-voltage electric appliance component and the thermal management system are all arranged on the upper cross beam assembly. By the adoption of the front cabin arrangement structure, the assembly and the maintenance are convenient, thecost is reduced, and the final assembly efficiency is improved; and the suspension torsion resistance is improved, the too large electric drive displacement during large torque is avoided, and the operation is stable and reliable.

Description

technical field [0001] The invention relates to the technical field of pure electric vehicles, in particular to a front cabin arrangement structure of a pure electric vehicle. Background technique [0002] Pure electric vehicles are an economical and environmentally friendly means of travel. In the prior art, pure electric vehicles are still designed based on fuel vehicles as a low-cost and high-efficiency development model; the components in the front compartment are drive assembly, motor controller, vehicle AC / DC power charger ( OBC for short), on-board DC / DC power converter (DC for short), and high-voltage junction box for vehicles (PDU for short) are arranged separately in the front cabin; the thermal management system in the front cabin has a simple structure; the suspension structure refers to fuel vehicles Layout scheme: The drive assembly and other components are fixed on the drive frame using a suspension layout scheme with three fixed points similar to that of fue...

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Problems solved by technology

[0003]The existing front cabin layout structure has the following problems: front cabin components drive assembly, electric drive controller, on-board AC / DC power charger (OBC for short) , vehicle-mounted DC / DC power converter (abbreviated as DC), and vehicle-used high-voltage connection junction box (referred to as PDU) are not highly integrated, the space utilization rate is not high, and the connection of high-voltage wire harnesses between components is complicated; The requirements for charging and discharging safety and efficiency are increasing day by day, and the natural cooling battery pack can no longer meet the requirements of the new energy vehicle thermal management system for charging and discharging safety and efficiency; it is necessary to design a thermal management system layout with the function of water-cooled (warm) battery packs in the front cabin Structure; the traditional fuel vehicle mount layout scheme focuses on solving the torque fluctuation of the engine and alleviating the vibration of the vehicle body caused by torque fluctuation. For pure electric vehicles, the torque of the drive motor is obviously greater than that of the engine, and the vibration of the drive motor is different from that of a traditional engine. Different, it is unreasonable to adopt a three-point mount arrangement similar to that of a fuel vehicle, and the mount also needs to bear the weight of other components on the electric drive frame except the electric drive, which is not conducive to the durability of the mount

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