CN-117002626-B - Rear assembly of engine compartment of hybrid electric vehicle

CN117002626BCN 117002626 BCN117002626 BCN 117002626BCN-117002626-B

Abstract

The rear assembly of the engine room of the hybrid electric vehicle comprises a front baffle assembly and A-pillar riser assemblies arranged on two sides of the front baffle assembly, wherein cross beam assemblies are symmetrically arranged on the front baffle assembly by taking a central line of a vehicle body as a symmetrical axis, the invention has the beneficial effects that the rear assembly structure and the process of the engine compartment are simple, the universality is strong, the safety and the collision resistance are strong, and the safety of a battery and the safety of passengers can be comprehensively ensured.

Inventors

CHEN YUE
WEI QINGHUA
XU KE
LI CHENG

Assignees

奇瑞汽车股份有限公司

Dates

Publication Date: 20260505
Application Date: 20230825

Claims (7)

1. The rear assembly of the engine compartment of the hybrid electric vehicle is characterized by comprising a front baffle assembly and A-pillar riser assemblies arranged on two sides of the front baffle assembly, wherein cross beam assemblies are symmetrically arranged on the front baffle assembly by taking a vehicle body central line as a symmetry axis, a battery pack assembly is arranged between the two cross beam assemblies, and the A-pillar riser assemblies are connected with the front longitudinal beam assembly through the cross beam assemblies; The cross beam assembly comprises a connecting cross beam welded on the front baffle assembly along the width direction of the vehicle body, and a connecting longitudinal beam and a longitudinal beam connecting plate which are welded perpendicularly to the connecting cross beam; The front baffle assembly, the connecting cross beam and the A-pillar riser assembly are welded and connected to form a cavity structure; The connecting longitudinal beam is in lap welding connection between the front baffle assembly and the connecting cross beam, and one end of the connecting longitudinal beam, which is far away from the connecting cross beam, is fixedly connected with the front longitudinal beam assembly; the front baffle assembly is fixedly welded with a fixed cross beam along the width direction of the vehicle body, the fixed cross beam and the front baffle assembly enclose a cavity structure, and two ends of the fixed cross beam are connected with the two front longitudinal beam assemblies in a welding mode.
2. The hybrid vehicle engine compartment rear assembly of claim 1 wherein the outer ends of the connecting beams are welded to the A-pillar riser assembly.
3. The hybrid vehicle engine compartment rear assembly of claim 2, wherein the connecting beam is a stamping part with a cross section in a shape of a Chinese character 'ji', two sides of the connecting beam are welded with the front baffle assembly through a flanging structure, and one end of the connecting beam is welded with the A-pillar riser assembly through a reinforcing flanging.
4. The hybrid vehicle engine compartment rear assembly of claim 1 wherein the connecting stringers are provided as L-shaped stampings and the cross-section of the connecting stringers is provided as a "figure" shape.
5. The hybrid vehicle engine compartment rear assembly of claim 1, wherein the front fender assembly is fixedly connected to a front floor assembly, the rail web is lap welded to the connecting cross member, the front fender assembly and the front floor assembly, the rail web is configured as a stamping, the rail web includes a connecting section lap welded to the connecting cross member, and the width of the connecting section is gradually reduced in a direction away from the connecting cross member.
6. The hybrid vehicle engine compartment rear assembly of claim 5, wherein the front side of the battery pack assembly is fixedly connected to two of the rail attachment plates.
7. The rear assembly of an engine compartment of a hybrid vehicle of claim 1 wherein the two cross beam assemblies are connected by a center tunnel connecting tubular beam.

Description

Rear assembly of engine compartment of hybrid electric vehicle Technical Field The invention relates to the technical field of automobile engine cabins, in particular to a rear assembly of an engine cabin of a hybrid electric vehicle. Background With the development of automobile technology, the requirements of customers on NVH and safety performance of automobiles are increasing. Automobile safety has become a reference factor for consumers to purchase vehicles. When an automobile is impacted in the front, the rear structure of the engine compartment assembly of the automobile body can absorb certain impact energy and simultaneously slow down the movement degree of passengers in the automobile, and meanwhile, the rear structure of the engine compartment assembly needs to be strong enough, deformation resistance and transmission dredging capacity of collision force, and is very important for ensuring enough living space of the passenger compartment in the collision process. The rear structure of the engine cabin of the PHEV hybrid vehicle in the industry is realized through the transformation of the traditional oil vehicle, the three-electricity arrangement of the PHEV hybrid vehicle needs to be given way to an original oil vehicle platform, the partial structure is unreasonable, a battery pack is possibly invaded by a hard object after collision, the ignition combustion is caused, the safety is poor, the structure of the body of the PHEV hybrid vehicle is large in battery endurance restriction, the weight of the PHEV hybrid vehicle is increased by about 100kg relative to that of the oil vehicle, and great challenges are brought to collision safety. In the prior art, however, most of the front portions of the engine compartments are structurally modified to improve the collision performance. The patent with publication number CN115447672A discloses an automobile engine room structure, which comprises a wheel cover assembly, a cross beam assembly and a longitudinal beam assembly, wherein the wheel cover assembly comprises a left front wheel cover assembly and a right front wheel cover assembly, the longitudinal beam assembly comprises a left front longitudinal beam assembly and a right front longitudinal beam assembly, the left front longitudinal beam assembly and the right front longitudinal beam assembly are arranged side by side and are respectively positioned on two sides of a central axis F of a frame, the bottom of the left front wheel cover assembly is fixedly connected to the left front longitudinal beam assembly, the bottom of the right front wheel cover assembly is fixedly connected to the right front longitudinal beam assembly, one end of the cross beam assembly is fixedly connected to the left front wheel cover assembly, the other end of the cross beam assembly is fixedly connected to the right front wheel cover assembly, and an engine room is formed in a region where the cross beam assembly, the wheel cover assembly and the longitudinal beam assembly are connected. The engine compartment structure is only improved aiming at the front structure of the engine compartment, and is not improved to improve the safety of battery pack installation in a hybrid vehicle type, and no technical teaching is given. Disclosure of Invention In order to solve the technical problems, the invention provides the rear assembly of the engine room of the hybrid electric vehicle, which has the advantages of strong safety and collision resistance, simple structure and process and strong universality. The technical scheme includes that the rear assembly of the engine compartment of the hybrid electric vehicle comprises a front baffle assembly and A-pillar riser assemblies arranged on two sides of the front baffle assembly, cross beam assemblies are symmetrically arranged on the front baffle assembly by taking a vehicle body central line as a symmetry axis, a battery pack assembly is arranged between the two cross beam assemblies, and the A-pillar riser assemblies are connected with the front longitudinal beam assembly through the cross beam assemblies. The cross beam assembly comprises a connecting cross beam welded on the front baffle assembly along the width direction of the vehicle body, and a connecting longitudinal beam and a longitudinal beam connecting plate which are welded perpendicularly to the connecting cross beam. The outer end of the connecting cross beam is welded with the A-pillar riser assembly. The front baffle assembly, the connecting cross beam and the A-pillar riser assembly are welded and connected to form a cavity structure. The connecting beam is set to the stamping workpiece of cross-section "several" font, the both sides of connecting beam pass through the turn-ups structure with preceding baffle assembly welding links to each other, the one end of connecting beam pass through the reinforcing turn-ups with A post riser assembly welding links to each other. The connecting longitudinal beam is in l