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CN-121983739-A - Composite bionic electric automobile battery compartment with lateral impact resistance enhancing structure

CN121983739ACN 121983739 ACN121983739 ACN 121983739ACN-121983739-A

Abstract

The invention provides a composite bionic electric vehicle battery compartment with a lateral impact resistance reinforcing structure, which is applied to the technical field of battery compartment design and comprises a bearing frame and reinforcing flanges, wherein the reinforcing flanges comprise convex wave crest parts and concave wave trough parts which are sequentially and alternately arranged along the top outline of the bearing frame, the bearing frame comprises hollow bearing units which are arranged in a main frame body and are sequentially and transversely arranged, adjacent units are connected through longitudinal reinforcing ribs, each bearing unit comprises a central part, inclined reinforcing ribs and transverse supporting ribs, the central part is of a regular hexagon structure formed by connecting six auxiliary reinforcing ribs, the upper auxiliary reinforcing ribs and the lower auxiliary reinforcing ribs are connected with the main frame body, the connecting ends of the left side and the right side are respectively connected with the transverse supporting ribs, the transverse supporting ribs are provided with inclined reinforcing ribs which are distributed in an array, and the inclined reinforcing ribs are parallel to the auxiliary reinforcing ribs at corresponding positions and have equal lengths. The invention realizes light weight and simultaneously remarkably improves the lateral impact resistance, bending resistance, torsion resistance, vibration reduction and energy absorption performance of the battery compartment.

Inventors

  • ZHANG LU
  • GAO XIAOYU
  • XU WENCHAO
  • QIAO YUHENG
  • SHU ZHIHAO
  • ZHANG TING

Assignees

  • 吉林大学

Dates

Publication Date
20260505
Application Date
20260408

Claims (10)

  1. 1. The composite bionic electric vehicle battery compartment with the lateral impact resistance enhancing structure is characterized by comprising a bearing frame (1) and a reinforcing flanging (2), wherein the reinforcing flanging (2) comprises a convex crest part (201) and a concave trough part (202), and the convex crest part (201) and the concave trough part (202) are sequentially and alternately arranged along the top outline of the bearing frame (1) to form a periodic wavy connecting unit; the bearing frame (1) comprises a first side wall and a second side wall, the first side wall at least comprises a hollowed-out bearing unit, the second side wall at least comprises two hollowed-out bearing units, the hollowed-out bearing units are arranged in a main frame, a plurality of hollowed-out bearing units are sequentially and transversely arranged in the main frame, and two adjacent hollowed-out bearing units are connected through a longitudinal reinforcing rib (109); The hollow bearing unit comprises a central part, inclined reinforcing ribs and transverse supporting ribs, wherein the central part is of a regular hexagon structure formed by connecting six auxiliary reinforcing ribs, the upper auxiliary reinforcing rib and the lower auxiliary reinforcing rib of the central part are connected with a main frame body, the connecting ends of the two auxiliary reinforcing ribs on the left side and the connecting ends of the two auxiliary reinforcing ribs on the right side of the central part are respectively connected with the transverse supporting ribs, the other ends of the transverse supporting ribs are connected with the main frame body or the longitudinal reinforcing ribs (109), N inclined reinforcing ribs distributed in an array are arranged on the transverse supporting ribs, the other ends of the inclined reinforcing ribs are connected with the main frame body, and the inclined reinforcing ribs are parallel and equal in length with the auxiliary reinforcing ribs at corresponding positions.
  2. 2. The composite bionic electric vehicle battery compartment with the lateral impact resistance enhancement structure according to claim 1, wherein the convex crest portions (201) and the concave trough portions (202) of the wavy connecting units are smoothly connected, and the tail ends of the concave trough portions (202) of the wavy connecting units are smoothly connected with the starting ends of the convex crest portions (201) of the adjacent wavy connecting units.
  3. 3. The composite bionic electric vehicle battery compartment with the lateral impact resistance enhancing structure according to claim 1, wherein corners of the reinforcing flange (2) are provided with corner connecting units, the corner connecting units comprise two convex crest portions (201) connected through smooth transition portions (203), and the ends of the convex crest portions (201) of the corner connecting units are smoothly connected with concave trough portions (202) of the wavy connecting units.
  4. 4. The composite bionic electric vehicle battery compartment with the lateral impact resistance enhancement structure according to claim 1, wherein the first side wall comprises a main frame body one (101), a central part one (102), an inclined reinforcing rib one (103) and a transverse supporting rib one (104), the main frame body one (101) is of a rectangular hollow frame body structure, the central part one (102) is arranged at the center of the main frame body one (101), and the symmetrical center of the central part one (102) is overlapped with the symmetrical center of the main frame body one (101); The upper auxiliary reinforcing ribs and the lower auxiliary reinforcing ribs of the first central part (102) are connected with the first main frame body (101), the connecting ends of the two left auxiliary reinforcing ribs of the first central part (102) are connected with the first main frame body (101) through the first transverse supporting ribs (104), the connecting ends of the two right auxiliary reinforcing ribs of the first central part (102) are connected with the first main frame body (101) through the first transverse supporting ribs (104), and the transverse axis of the first transverse supporting ribs (104) is collinear with the transverse axis of the first main frame body (101); The central part I (102) and the two transverse supporting ribs I (104) divide the inner part of the main frame body I (101) into four spaces, two inclined reinforcing ribs I (103) distributed in an array are respectively arranged in each space, one end of each inclined reinforcing rib I (103) is connected with the main frame body I (101), and the other end of each inclined reinforcing rib I is connected with the transverse supporting rib I (104).
  5. 5. The composite bionic electric automobile battery compartment with the lateral impact resistance enhancement structure according to claim 4 is characterized in that the center part I (102) divides the inside of the main frame body I (101) into a left cavity and a right cavity, the inclined reinforcing ribs I (103) corresponding to the vertical distribution positions in the left cavity and the right cavity are connected with the transverse supporting ribs I (104) in a Y shape, and the auxiliary reinforcing ribs distributed in the center part I (102) in an inclined manner are connected with the transverse supporting ribs I (104) corresponding to the vertical distribution positions in a Y shape.
  6. 6. The composite bionic electric vehicle battery compartment with the lateral impact resistance enhancing structure according to claim 1, wherein the second side wall comprises a main frame body II (105) and a longitudinal reinforcing rib (109), the main frame body II (105) is of a rectangular hollowed-out frame structure, the longitudinal reinforcing rib (109) is arranged at the center of the main frame body II (105) and enables the central axis of the longitudinal reinforcing rib (109) to be collinear with the axial symmetry axis of the main frame body II (105), and the longitudinal reinforcing rib (109) divides the main frame body II (105) into a left bearing space and a right bearing space.
  7. 7. The composite bionic electric automobile battery compartment with the lateral impact resistance enhancement structure according to claim 6, wherein a second central part (106), a second inclined reinforcing rib (107) and a second transverse supporting rib (108) are arranged in the left bearing space and the right bearing space of the second side wall; The second central part (106) is arranged at the center of the bearing space, the symmetrical center of the second central part (106) coincides with the symmetrical center of the corresponding bearing space, the upper auxiliary reinforcing rib and the lower auxiliary reinforcing rib of the second central part (106) are connected with the second main frame (105), the connecting ends of the two auxiliary reinforcing ribs on one side of the second central part (106) are connected with the second main frame (105) through the second transverse supporting rib (108), the connecting ends of the two auxiliary reinforcing ribs on the other side of the second central part (106) are connected with the longitudinal reinforcing ribs (109) through the second transverse supporting rib (108), and the transverse axes of the two second transverse supporting ribs (108) are collinear with the transverse axis of the second main frame (105); The center part II (106) and the two transverse supporting ribs II (108) divide the corresponding bearing space into four spaces, two inclined reinforcing ribs II (107) distributed in an array are respectively arranged in each space, one end of each inclined reinforcing rib II (107) is connected with the main frame body II (105), and the other end of each inclined reinforcing rib II is connected with the transverse supporting rib II (108).
  8. 8. The battery compartment of the composite bionic electric automobile with the lateral impact resistance enhancement structure according to claim 6, wherein the second central part (106) divides the corresponding bearing space into a left cavity and a right cavity, the second inclined reinforcing ribs (107) corresponding to the vertical distribution positions in the left cavity and the right cavity are connected with the second transverse supporting ribs (108) in a Y shape, and the second auxiliary reinforcing ribs distributed in the second central part (106) in an inclined manner are connected with the second transverse supporting ribs (108) corresponding to the vertical distribution positions in a Y shape.
  9. 9. The composite bionic electric vehicle battery compartment with lateral impact reinforcement according to claim 1, wherein the width of the auxiliary reinforcing ribs of the central portion is the same as the width of the transverse supporting ribs and the width of the longitudinal reinforcing ribs (109) and is wider than the width of the oblique reinforcing ribs.
  10. 10. The composite bionic electric vehicle battery compartment with the lateral impact resistance enhancement structure according to claim 1, wherein the bearing frame (1) is a composite bionic hollowed-out frame body structure formed by enclosing two first side walls and two second side walls, a first main frame body (101) of the first side walls and a second main frame body (105) of the second side walls are connected to form an integrated corner support frame (110), and the width of the corner support frame (110) is larger than that of the transverse support rib, the longitudinal reinforcing rib (109) and the inclined reinforcing rib.

Description

Composite bionic electric automobile battery compartment with lateral impact resistance enhancing structure Technical Field The invention belongs to the technical field of battery compartment design, and particularly relates to a composite bionic electric vehicle battery compartment with a lateral impact resistance enhancing structure. Background At present, the global new energy automobile industry rapidly develops, and the power battery is used as a core power source of the whole automobile, so that the running safety and the light weight level of the whole automobile become important factors for influencing the endurance of the automobile and ensuring the stable running of the automobile. The battery compartment is used as a bearing and protecting carrier of the power battery, and is mainly used for fixing the power battery, resisting external impact, guaranteeing structural integrity under working conditions such as side collision, vibration extrusion and the like, and further avoiding the damage of the battery core of the power battery. The current battery compartment of the electric automobile is mostly cast by adopting materials such as steel plates, aluminum alloys and the like, then the surfaces are sprayed, welded, riveted and spliced to form, the strength of the metal compartment body is higher, but the self weight is larger, the impact resistance and the deformation resistance are limited, the local damage is easy to occur under the extrusion or side collision working condition, and the protection capability of the power battery cannot be fully adapted to the safety test requirements of the current power storage battery safety requirement of the electric automobile (GB 38031-2020) and the follow-up version (GB 38031-2025) on the vibration, the mechanical impact, the simulated collision, the extrusion and the like of the battery compartment. In order to improve the mechanical property of the battery compartment on the premise of light weight, various bionic structure optimization schemes are proposed in the industry, but the existing scheme adopts a single bionic structure, so that a lifting space still exists in the aspects of uniform stress distribution, lateral impact resistance and extrusion performance, and the multi-structure cooperative enhancement effect is difficult to realize on the basis of light weight. Therefore, it is needed to design a novel battery compartment capable of realizing multi-structure cooperation and achieving both light weight and high protection performance so as to improve the safety of the power battery system of the electric automobile and the overall performance of the whole automobile. Disclosure of Invention In view of the problems in the prior art, the invention aims to provide a composite bionic electric vehicle battery compartment with a lateral impact resistance enhancement structure, and the lateral impact resistance, bending resistance, torsion resistance and vibration absorption performances of the battery compartment are obviously improved while the weight reduction is realized through the integrated composite of three bionic structures of a honeycomb structure, a cobweb structure and an cuttlefish bone. The utility model provides a take side direction to shock and strengthen compound bionical electric automobile battery compartment of structure, includes carrier and reinforcement turn-ups, the reinforcement turn-ups includes evagination crest portion and indent trough portion, evagination crest portion and indent trough portion are arranged in proper order along the top profile of carrier, form periodic wave connecting element, the carrier includes first lateral wall and second lateral wall, first lateral wall includes at least one fretwork formula carrier, the second lateral wall includes two fretwork formula carrier at least, fretwork formula carrier sets up in the main frame, and a plurality of fretwork formula carrier are arranged in the main frame in proper order transversely, connect through vertical strengthening rib between two adjacent fretwork formula carrier, fretwork formula carrier includes central part, slope strengthening rib and transverse support rib, the central part is six supplementary strengthening rib connection positive structures that form, two supplementary strengthening ribs in the central part are connected with the main frame, the link of two supplementary strengthening ribs in the left side of central part, right side all are connected with transverse support rib, the other end and the corresponding vertical support rib of N of the slope strengthening rib on the main frame or the other end and the slope strengthening rib that the main frame has the slope to be connected with the vertical support rib, the equal length. Preferably, the convex crest portions and the concave trough portions of the wavy connecting units are connected smoothly, and the tail ends of the concave trough portions of the wavy connecting units are conn