CN-122009327-A - Frame assembly of integrated battery frame

CN122009327ACN 122009327 ACN122009327 ACN 122009327ACN-122009327-A

Abstract

The invention relates to the technical field of chassis of pure electric commercial vehicles, and particularly discloses a frame assembly of an integrated battery frame, which comprises a front section assembly, a middle section assembly and a rear section assembly, wherein the front section assembly is connected with the front part of the middle section assembly, the rear section assembly is connected with the rear part of the middle section assembly, the middle section assembly comprises side beams, middle beams, connecting plates and a plurality of battery pack mounting brackets, and the side beams, the middle beams and the connecting plates form a ' Chinese character ' shaped ' frame structure; the side beam comprises a fixed side beam and a battery changing side beam, six battery mounting brackets are arranged on the battery changing side beam, the middle beam comprises a fixed middle beam and a battery changing middle beam, six battery mounting brackets are arranged on the battery changing middle beam, and power batteries with different specifications are arranged on the battery mounting brackets.

Inventors

YANG ZHIGANG
ZHANG WENBO
WEN XUEFENG
YANG YANG
CAI BAO
AN YAFEI

Assignees

陕西重型汽车有限公司

Dates

Publication Date: 20260512
Application Date: 20241112

Claims (10)

1. The frame assembly of the integrated battery frame is characterized by comprising a front section assembly, a middle section assembly and a rear section assembly, wherein the front section assembly is connected with the front part of the middle section assembly, the rear section assembly is connected with the rear part of the middle section assembly, the middle section assembly comprises side beams, middle beams, connecting plates and a plurality of battery pack mounting brackets, and the side beams, the middle beams and the connecting plates form a ' Chinese character ' tie ' -shaped frame structure; The boundary beam comprises a fixed boundary beam and a battery replacement boundary beam, six battery mounting brackets are arranged on the battery replacement boundary beam, the middle beam comprises a fixed middle beam and a battery replacement middle beam, six battery mounting brackets are arranged on the battery replacement middle beam, and power batteries with different specifications are mounted on the battery mounting brackets.
2. The integrated battery frame of claim 1, wherein the first and second corner connectors are mounted on two sides of the junction of the front section assembly and the middle section assembly, and the first and second corner connectors are mounted on two sides of the junction of the rear section assembly and the middle section assembly.
3. The integrated battery frame vehicle frame assembly of claim 1, wherein the first and second corner connectors are integrated with the leaf spring mounting bracket, and the first and second corner connectors are provided with cab suspension mounting holes and fender mounting holes.
4. The integrated battery frame of claim 1, wherein the side and center rails are provided in two sets, the side and center rails are bolted to four connection plates, and the side rails are parallel to the center rail and perpendicular to the connection plates.
5. The integrated battery frame of claim 1, wherein the fixed side beam is of an integrally stamped "U" structure, the fixed side beam end is provided with a connection hole with the connection plate, the fixed side beam is provided with a first positioning pin hole, and the first positioning pin hole is used for positioning a positioning pin of the power battery in a matching power change scheme.
6. The integrated battery frame vehicle frame assembly of claim 1, wherein the fixed center sill is formed by integral stamping, the fixed center sill is provided with a first positioning pin hole, the first positioning pin hole is used for positioning a positioning pin of the power battery during power exchange, and a connecting hole site is formed at the end part of the power exchange center sill and connected with the connecting plate.
7. The integrated battery frame of claim 1, wherein the front assembly comprises a front longitudinal beam, a front butt-joint cross beam and a front cross beam, the front assembly is in butt joint with the front end face of the middle assembly through the front butt-joint cross beam, and the front longitudinal beam of the front assembly is formed by extrusion of aluminum alloy.
8. The integrated battery frame of claim 7, wherein the rear assembly comprises a rear longitudinal beam, a rear butt-joint cross beam and a tail cross beam, the rear assembly is in butt joint with the rear end face of the middle assembly through the rear butt-joint cross beam, and the rear longitudinal beam of the rear assembly is formed by rolling a high-strength steel material.
9. The integrated battery frame vehicle frame assembly of claim 8, wherein the rear longitudinal beam of the rear section assembly of the front longitudinal beam of the front section assembly is provided with mounting holes for mounting other accessories of the whole vehicle.
10. The integrated battery frame vehicle frame assembly of claim 8, wherein the width of the middle section assembly is greater than the distance between the two front stringers of the front section assembly and the width of the middle section assembly is greater than the distance between the two rear stringers of the rear section assembly.

Description

Frame assembly of integrated battery frame Technical Field The invention relates to the technical field of chassis of pure electric commercial vehicles, in particular to a frame assembly of an integrated battery frame. Background With the deep advancement of the national 'double carbon' strategy, the new energy heavy truck market enters a rapid growth period. In order to meet the demand of increasing endurance mileage, the arrangement of more power batteries becomes one of the solutions. At present, a trapezoid frame of a traditional fuel oil vehicle is mostly used for a heavy truck frame with new energy, the structure is composed of two straight longitudinal beams which are symmetrical left and right and a plurality of cross beams, power batteries are generally arranged on two sides of the frame or the upper end of a rear surrounding frame of a cab based on structural limitation, and the following problems exist as shown in fig. 1-2: 1) The weight is seriously redundant, namely, in order to ensure the safety of the power battery, the battery frame often has higher rigidity and weight, but is limited by the current arrangement form (arranged on two sides of the frame or the upper end of the rear surrounding frame of the cab), the battery frame cannot play a role in bearing the whole vehicle, and the battery frame also becomes a redundant part for influencing the dead weight of the whole vehicle. 2) The space utilization rate is low, the current battery frame requires an additional bracket to be fixed on the frame longitudinal beam, so that the waste of assembly space is caused, and the improvement of the volume energy density of the power battery system is not facilitated. 3) The adaptability of the power battery is poor, the limit value of the length of the whole vehicle and the space limitation caused by the left and right straight longitudinal beams of the traditional vehicle frame are considered, and the power battery with larger volume cannot be assembled in two arrangement forms. 4) The safety is reduced, the whole width of the traditional trapezoid frame is limited in consideration of the requirements of wheel track and the like, the torsional rigidity of the traditional trapezoid frame is low, the width of the traditional trapezoid frame is equal to the width of the whole vehicle when the power battery is arranged, and the stress of a frame system is possibly uneven, so that the stability and the safety of the whole vehicle are affected. 5) The traditional frame adopts a penetrating straight longitudinal beam, so that only materials with the same brand can be selected, and light materials can not be flexibly selected according to actual conditions, thereby being not beneficial to the light weight of a frame system. Therefore, there is an urgent need to design a frame assembly with an integrated battery frame, so as to solve the problems of heavy redundancy, low space utilization, poor universality, low safety, poor reliability and insufficient expansibility of a battery pack caused by the fact that a large volume of batteries cannot be arranged in the existing pure electric heavy truck and the weight of the battery frame is large. Disclosure of Invention Aiming at the problems existing in the prior art, the invention aims to provide the frame assembly of the integrated battery frame, which has the advantages of simple process, higher overall bending rigidity and torsional rigidity, and higher durability of the whole vehicle, and adopts an integrated design to integrate the traditional trapezoid frame and the battery frame into a novel bearing part of the whole vehicle, so that the bearing effect is achieved on the premise of meeting the requirement of assembling a large-capacity battery, the weight of the whole vehicle is effectively reduced, and in addition, the battery pack stress is uniformly dispersed to the frame. The invention solves the technical problems by adopting the technical scheme that the frame assembly of the integrated battery frame comprises a front section assembly, a middle section assembly and a rear section assembly, wherein the front section assembly is connected with the front part of the middle section assembly, the rear section assembly is connected with the rear part of the middle section assembly, the middle section assembly comprises side beams, middle beams, connecting plates and a plurality of battery pack mounting brackets, and the side beams, the middle beams and the connecting plates form a 'Chinese character' shaped frame structure; The boundary beam comprises a fixed boundary beam and a battery replacement boundary beam, six battery mounting brackets are arranged on the battery replacement boundary beam, the middle beam comprises a fixed middle beam and a battery replacement middle beam, six battery mounting brackets are arranged on the battery replacement middle beam, and power batteries with different specifications are mounted on the battery mounting brackets.