Vehicle body bracket and electric vehicle

Abstract

The vehicle body support is arranged on a main beam of the electric vehicle and used for connecting and installing a battery pack, the vehicle body support comprises a battery pack installation assembly, the battery pack installation assembly comprises a locking mechanism used for being connected with the battery pack in a locking mode, and the vehicle body support further comprises a middle beam assembly arranged above the main beam in a crossing mode. The middle beam assembly extends in the width direction of the electric vehicle, the two ends, extending in the width direction of the electric vehicle, of the middle beam assembly are connected with the battery pack mounting assembly, and the middle beam assembly comprises a connecting plate used for connecting the connector frame to the lower portion of the middle beam assembly. The middle beam assembly is connected with the battery pack installation assembly, the connecting structure between the battery pack installation assembly and the electric vehicle is simplified, and the middle beam assembly is arranged to increase the overall strength of the vehicle body support. The middle beam assembly stretches across the vehicle body main beam and is connected with the battery pack installation assembly, the vehicle body main beam is used for supporting the battery pack installation assembly, and the connection reliability and convenience of the whole vehicle body support and the vehicle body are facilitated.

Description

Technical Field

[0001] The utility model discloses a vehicle body bracket and an electric vehicle. Background Art

[0002] The battery pack installation methods of existing electric vehicles are generally divided into fixed installation and replaceable installation. The fixed installation battery pack is generally fixed on the vehicle; while the replaceable installation battery pack generally adopts a movable installation method. The battery pack can be removed at any time for replacement or charging, and then installed on the vehicle body after replacement or charging.

[0003] For replaceable battery packs, a locking portion is usually configured; a body bracket is installed at the bottom of the electric vehicle, and a battery pack mounting component, such as a support block and a locking mechanism, is provided on the body bracket. The locking portion can cooperate with the locking mechanism to fix the battery pack to the electric vehicle.

[0004] In the prior art, the brackets for installing the locking mechanism and the electrical connector brackets are generally directly connected to the sides of the main beam of the electric vehicle, which are easily restricted by the positions of other structures on the main beam, require high installation accuracy, have complex connection structures, and are prone to deformation of the main beam. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the defects of the prior art that the vehicle body bracket is directly connected to the main beam and has high installation precision requirements and a complex connection structure, and to provide a vehicle body bracket and an electric vehicle.

[0006] The utility model solves the above technical problems through the following technical solutions:

[0007] A body bracket is provided on the main beam of an electric vehicle and is used for connecting and installing a battery pack. The body bracket includes a battery pack mounting assembly, and the battery pack mounting assembly includes a locking mechanism for locking and connecting the battery pack. The body bracket also includes:

[0008] The center beam assembly is arranged across the main beam and extends along the width direction of the electric vehicle. Both ends of the center beam assembly extending along the width direction of the electric vehicle are connected to the battery pack mounting assembly. The center beam assembly includes a connecting plate for connecting the connector frame to the bottom of the center beam assembly.

[0009] In this solution, the electric vehicle includes two beams arranged side by side and extending along the length direction of the vehicle. The body bracket is connected to the beam for detachably installing a quick-change battery pack. It also includes two quick-change battery packs, which are independently installed on both sides of the beam. The battery pack installation assembly is connected through a central beam assembly, which simplifies the connection structure between the battery pack installation assembly and the electric vehicle, reduces the direct connection between the body bracket and the main beam, and avoids interference with other connection structures on the side of the main beam. The central beam assembly is provided to increase the overall strength of the body bracket; the central beam assembly is cross-arranged on the body beam and connected to the battery pack installation assembly, and the body beam is used to support the battery pack installation assembly. The main beam is more evenly stressed, which avoids deformation of the main beam due to uneven stress, and is beneficial to the reliability and convenience of the connection between the body bracket as a whole and the body.

[0010] The connector frame is used to set the vehicle-end connector electrically connected to the battery pack, and the flatness of the lower surface of the connecting plate is used to optimize the connection between the connector frame and the middle beam assembly, which is conducive to the precise connection between the connector frame and the middle beam assembly. The above setting is conducive to the precise setting of the vehicle-end connector on the connector frame, thereby facilitating the connection between the battery pack and the vehicle-end connector, and ensuring the success rate of battery pack replacement.

[0011] Preferably, the connecting plate includes a main body and a first flange bent vertically upward from an edge of the main body, and mounting holes are provided on the main body and the first flange, and the mounting holes are used for connection and installation of the connector frame.

[0012] In this solution, by providing the first flange, it is beneficial to increase the overall strength of the connecting plate and reduce the risk of bending and deformation of the connecting plate in the horizontal direction. By providing mounting holes in the main body and the first flange, it is connected to the connector frame in both the horizontal and vertical directions, which is beneficial to increase the connection reliability between the connecting plate and the connector frame.

[0013] Preferably, the lower surface of the main body is provided with a main beam connecting portion for connecting with the main beam.

[0014] The main beam connection portion has a first connection surface and a second connection surface, the first connection surface is connected to the lower surface of the main body, and the second connection surface is perpendicular to the first connection surface and is used to connect to the main beam.

[0015] In this solution, the middle beam assembly is mounted on the main beam, and the middle beam assembly is connected to the battery pack mounting assembly, which is beneficial for the main beam to bear the body bracket and the battery pack connected to the body bracket. The connection area between the main beam connection part and the main beam and the connection plate is increased by the mutually perpendicular first connection surface and the second connection surface, which is beneficial for the connection reliability between the main beam and the body bracket.

[0016] Preferably, there is an accommodating space between the main beam connecting portion and the connector frame, and the accommodating space is used for the main beam to pass through.

[0017] In this solution, the electric vehicle has two main beams spaced apart in the width direction, the main beams extend along the length direction of the electric vehicle, and the main beam connection parts are arranged on both sides of the connector frame in the width direction of the electric vehicle. By installing a connecting plate above the main beam, the main beam is subjected to force more evenly, which is beneficial for the main beam to bear the body bracket and the battery pack connected to the body bracket, reduces the risk of bending of the main beam, simplifies the connection between the body bracket and the electric vehicle, and is beneficial to the connection reliability between the body bracket and the vehicle and the battery pack. By providing an accommodation space between the main beam connection part and the connector frame for the main beam to pass through, the space between the main beams is utilized to place the electric connector frame, while reducing the connection structure between the body and the main beam, which is convenient for the connection and disassembly of the two.

[0018] Preferably, the main body has a weight-reducing hole extending vertically therethrough.

[0019] In this solution, by setting weight-reducing holes, the weight of the connecting plate is reduced, which is beneficial to the lightweight design of the body bracket, the main beam bearing the body bracket, and the improvement of the connection reliability between the body bracket and the main beam.

[0020] Preferably, a plurality of weight-reducing portions are provided on the lower surface of the main body.

[0021] In this solution, by providing a weight-reducing portion, the weight of the connecting plate is reduced, which is beneficial to the lightweight design of the vehicle body bracket, is beneficial to the main beam bearing the vehicle body bracket, and improves the connection reliability between the vehicle body bracket and the main beam.

[0022] Preferably, a transverse reinforcement portion is provided on an upper surface of the main body portion, and the transverse reinforcement portion extends along a width direction of the electric vehicle.

[0023] In this solution, by providing a transverse reinforcement portion, the overall strength of the connecting plate is improved, and the risk of the connecting plate bending along the width direction of the electric vehicle is reduced, which is beneficial to the connection reliability between the body bracket and the main beam and is beneficial to the service life of the body bracket.

[0024] Preferably, a longitudinal reinforcement portion is provided on an upper surface of the main body portion, and the longitudinal reinforcement portion extends along a length direction of the electric vehicle.

[0025] In this solution, by providing a longitudinal reinforcement portion, the overall strength of the connecting plate is improved, and the risk of the connecting plate bending along the length direction of the electric vehicle is reduced, which is beneficial to the connection reliability between the body bracket and the main beam and to the service life of the body bracket.

[0026] Preferably, the center beam assembly includes a reinforcing beam, and the reinforcing beam is connected to the connecting plate.

[0027] In this solution, by providing a reinforcing beam to connect the connecting plate and the battery pack mounting assembly in the width direction or length direction of the electric vehicle, it is beneficial to the connection reliability between the connecting plate and the battery pack mounting assembly and improves the overall strength of the body bracket.

[0028] Preferably, the connecting plate comprises a main body portion, the main body portion is provided with second flanges on both sides along the width direction of the vehicle, the second flanges are provided with avoidance gaps, and the avoidance gaps are used for the reinforcing beam to be embedded and connected to the connecting plate.

[0029] In this solution, by providing the second flange, it is beneficial to increase the overall strength of the connecting plate and reduce the risk of bending and deformation of the connecting plate in the horizontal direction. The upper surface or the lower surface of the reinforcing beam can be fitted with the main body, increasing the connection area between the reinforcing beam and the connecting plate, which is beneficial to the connection reliability between the reinforcing beam and the connecting plate. And by providing the avoidance notch, it is convenient to connect the reinforcing beam and the connecting plate, which is beneficial to the precise installation between the connector frame and the connecting plate; and avoiding the second flange from affecting the connection between the reinforcing beam, the connecting plate and the connector frame is beneficial to the lightweight design of the vehicle body bracket.

[0030] Preferably, the center beam assembly further includes a reinforcing plate, which is disposed at both ends of the reinforcing beam and is used to connect the reinforcing beam with the battery pack mounting assembly.

[0031] In this solution, a reinforcing plate is provided to increase the contact area between the reinforcing beam and the battery pack mounting assembly, thereby improving the connection strength between the reinforcing beam and the battery pack mounting assembly, facilitating the setting of the connection structure between the reinforcing beam and the battery pack mounting assembly, and reducing the risk of loosening and deformation of the connection position between the reinforcing beam and the battery pack mounting assembly, which is beneficial to the connection reliability between the reinforcing beam and the battery pack mounting assembly.

[0032] Preferably, the reinforcing plate is a trapezoidal structure, the side of the reinforcing plate close to the battery pack mounting assembly is the long side of the trapezoid, the side of the reinforcing plate away from the battery pack mounting assembly is the short side of the trapezoid, and the side of the reinforcing plate away from the battery pack mounting assembly extends to two adjacent reinforcing beams.

[0033] In this solution, through the above-mentioned settings, the contact area between the reinforcing beam and the battery pack mounting assembly is increased, while the overall weight of the reinforcing plate is reduced as much as possible, which is beneficial to the lightweight design of the body bracket, and further beneficial to the connection reliability between the main beam and the body bracket.

[0034] Preferably, the reinforcing plate has a bent portion on one side close to the battery pack mounting assembly, and the bent portion is attached to the side surface of the battery pack mounting assembly and connected to the battery pack mounting assembly.

[0035] In this solution, the bent portion is beneficial to increasing the overall strength of the reinforcing plate and reducing the risk of deformation of the reinforcing plate; by setting the bent portion, the contact area between the reinforcing plate and the reinforcing beam, and the battery pack mounting assembly is further increased, which is beneficial to the connection reliability between the reinforcing plate and the reinforcing beam, and the battery pack mounting assembly.

[0036] Preferably, the battery pack mounting assembly includes a front crossbeam and a rear crossbeam, and the front crossbeam and the rear crossbeam are respectively arranged at both ends of the battery pack along the length direction of the electric vehicle, and locking mechanisms are provided on the front crossbeam and the rear crossbeam, and the middle beam assembly is located between the front crossbeam and the rear crossbeam.

[0037] In this solution, the locking mechanism is located on both sides of the body bracket along the length direction of the electric vehicle, and the battery pack can be replaced from both sides of the width direction of the electric vehicle, avoiding occupying the space of the battery pack on the side of the electric vehicle, thereby increasing the volume of the battery pack. The middle beam assembly is located between the front cross beam and the rear cross beam, and the connector frame is used to set the vehicle-end connector connected to the battery pack, which facilitates the connection structure between the electric vehicle and the battery pack and simplifies the structure of the body bracket.

[0038] Preferably, the front cross beam and the rear cross beam are connected by a connecting beam, and the end of the middle beam assembly is connected to the connecting beam.

[0039] In this solution, the end of the middle beam assembly is connected to the connecting beam, which reduces the deformation caused by the stress on the connecting beam, and is conducive to the distance between the front beam and the rear beam supported by the connecting beam. When the space between the front beam and the rear beam is used to accommodate the battery pack, it is convenient for the stability of the overall structure of the body bracket. The front beam and the rear beam are connected by the connecting beam, which supports the front beam and the rear beam, reduces the risk of deformation of the front beam and the rear beam, thereby maintaining the distance between the front beam and the rear beam, and reducing the risk of position deviation of the locking mechanism, which is conducive to the successful replacement of the battery pack and the service life of the body bracket.

[0040] Preferably, the connector frame has battery pack installation areas on both sides in the width direction of the electric vehicle, and the connector frame has two vehicle-end connectors arranged back to back on the side walls in the width direction of the electric vehicle. The vehicle-end connectors are located below the connecting plate, and are used to electrically connect to the battery pack.

[0041] In this solution, when the battery pack is arranged on both sides of the vehicle-end connector in the left and right directions, the body bracket and the electric vehicle are balanced in the left and right directions. The vehicle-end connector and the battery pack are both located below the connecting plate, and the middle beam assembly is mounted above the main beam. The above-mentioned structural arrangement is conducive to reducing the space occupied by the body bracket and the battery pack in the height direction of the electric vehicle, and is convenient for the arrangement of the body bracket and the battery pack.

[0042] An electric vehicle comprises a main beam and the above-mentioned body bracket, wherein the body bracket is connected to the main beam through the center beam assembly.

[0043] In this solution, the battery pack mounting assembly is connected via a center beam assembly, the connection structure between the battery pack mounting assembly and the electric vehicle is simplified, and the center beam assembly is provided to increase the overall strength of the body bracket; the center beam assembly is cross-set on the body beam and connected to the battery pack mounting assembly, and the body beam is used to support the battery pack mounting assembly, which is beneficial to the reliability and convenience of the connection between the overall body bracket and the body.

[0044] The positive and progressive effects of the utility model are:

[0045] The battery pack mounting assembly is connected via a center beam assembly, thereby simplifying the connection structure between the battery pack mounting assembly and the electric vehicle, and providing a center beam assembly to increase the overall strength of the body bracket. The center beam assembly is cross-set on the body beam and connected to the battery pack mounting assembly, and the body beam is used to support the battery pack mounting assembly, which is beneficial to the reliability and convenience of the connection between the overall body bracket and the body. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a schematic diagram of the three-dimensional structure of the vehicle body bracket in one embodiment of the utility model, wherein the battery pack is connected to the vehicle body bracket through a battery pack mounting assembly.

[0047] Figure 2 It is a three-dimensional structural schematic diagram of a vehicle body bracket in one embodiment of the utility model.

[0048] Figure 3 It is a three-dimensional structural schematic diagram of a vehicle body bracket in one embodiment of the utility model from another perspective.

[0049] Figure 4 It is a three-dimensional structural schematic diagram of a center beam assembly of a vehicle body support in one embodiment of the utility model.

[0050] Figure 5 It is a three-dimensional structural schematic diagram of a center beam assembly of a vehicle body support in one embodiment of the utility model from another perspective.

[0051] Figure 6It is a schematic diagram of the three-dimensional structure of the main beam connecting portion of the vehicle body support in one embodiment of the utility model.

[0052] Figure 7 It is a three-dimensional structural schematic diagram of a vehicle body bracket and a main beam in one embodiment of the utility model.

[0053] Figure 8 It is a three-dimensional structural schematic diagram of a vehicle body bracket and a main beam in one embodiment of the utility model from another perspective.

[0054] Description of reference numerals:

[0055] Body bracket 100

[0056] Battery pack installation assembly 1

[0057] Locking mechanism 11

[0058] Front beam 12

[0059] Rear beam 13

[0060] Connecting beam 14

[0061] Middle beam component 2

[0062] Connecting plate 21

[0063] Main body part 211

[0064] Weight reduction hole 2111

[0065] Weight loss department 2112

[0066] First flange 212

[0067] Transverse reinforcement 213

[0068] Longitudinal reinforcement 214

[0069] Second flange 215

[0070] Avoid gap 216

[0071] Reinforcement beam 22

[0072] Reinforcement plate 23

[0073] Bending portion 231

[0074] Opening 232

[0075] Main beam connection 3

[0076] First connecting surface 31

[0077] Second connecting surface 32

[0078] Reinforcement rib 33

[0079] Connector frame 4

[0080] Accommodation space 5

[0081] Battery pack installation area 6

[0082] Vehicle end connector 7

[0083] Battery Pack 200

[0084] Main beam 300 DETAILED DESCRIPTION

[0085] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0086] The utility model provides a vehicle body bracket 100, such as Figure 1 , Figure 2 , Figure 3 , Figure 7 and Figure 8 As shown, it is arranged on the main beam 300 of the electric vehicle and is used to connect and install the battery pack 200. The body bracket 100 includes a battery pack installation component 1, and the battery pack installation component 1 includes a locking mechanism 11 for locking and connecting the battery pack 200. The body bracket 100 also includes: a middle beam component 2, which is arranged across the main beam 300 and extends along the width direction W of the electric vehicle. The two ends of the middle beam component 2 extending along the width direction W of the electric vehicle are connected to the battery pack installation component 1. The middle beam component 2 includes a connecting plate 21 for connecting the connector frame 4 to the bottom of the middle beam component 2.

[0087] The electric vehicle includes two main beams 300 arranged side by side and extending along the length direction of the vehicle. The body bracket 100 is connected to the main beam 300 for detachably installing a quick-change battery pack 200. It also includes two quick-change battery packs 200, which are independently installed on both sides of the main beam 300. The battery pack installation assembly 1 is connected via the middle beam assembly 2, which simplifies the connection structure between the battery pack installation assembly 1 and the electric vehicle, reduces the direct connection between the body bracket 100 and the main beam 300, and can avoid interference with other connection structures on the side of the main beam 300. The middle beam assembly 2 is provided to increase the overall strength of the body bracket 100; the middle beam assembly 2 is cross-arranged on the body main beam 300 and connected to the battery pack installation assembly 1, and the body main beam 300 is used to support the battery pack installation assembly 1. The main beam 300 is subjected to more uniform force, which avoids deformation of the main beam 300 due to uneven force, which is beneficial to the reliability and convenience of the connection between the body bracket 100 and the body.

[0088] The connector frame 4 is used to set the vehicle-end connector 7 electrically connected to the battery pack 200, and the flatness of the lower surface of the connecting plate 21 is used to optimize the connection between the connector frame 4 and the center beam assembly 2, which is conducive to the precise connection between the connector frame 4 and the center beam assembly 2. The above-mentioned setting is conducive to the precise setting of the vehicle-end connector 7 on the connector frame 4, thereby facilitating the connection between the battery pack 200 and the vehicle-end connector 7, and ensuring the success rate of battery replacement of the battery pack 200.

[0089] As a preferred implementation, Figure 4 As shown, the connecting plate 21 includes a main body 211 and a first flange 212 bent vertically upward from the edge of the main body 211 , and the main body 211 and the first flange 212 are provided with mounting holes for connection and installation of the connector frame 4 .

[0090] In this embodiment, the body 211 is a thin plate structure, and the first flange 212 is provided, which is beneficial to increase the overall strength of the connecting plate 21 without increasing the thickness of the body 211, reduce the risk of bending and deformation of the connecting plate 21 in the horizontal direction, and is beneficial to the lightweight design of the connecting plate 21 and the vehicle body bracket 100. By providing mounting holes in the body 211 and the first flange 212, the connecting plate 21 is connected to the connector frame 4 in both the horizontal and vertical directions, which is beneficial to increase the connection reliability between the connecting plate 21 and the connector frame 4.

[0091] As a preferred implementation, Figure 3 and Figure 6 As shown, a main beam connecting portion 3 is provided on the lower surface of the main body 211 for connecting to the main beam 300. The main beam connecting portion 3 has a first connecting surface 31 and a second connecting surface 32. The first connecting surface 31 is connected to the lower surface of the main body 211, and the second connecting surface 32 is perpendicular to the first connecting surface 31 and is used to connect to the main beam 300.

[0092] The middle beam assembly 2 is mounted on the main beam 300, and the middle beam assembly 2 is connected to the battery pack mounting assembly 1, which is beneficial for the main beam 300 to carry the body bracket 100 and the battery pack 200 connected to the body bracket 100. The connection area between the main beam connecting part 3 and the main beam 300 and the connecting plate 21 is increased by the mutually perpendicular first connecting surface 31 and the second connecting surface 32, which is beneficial for the connection reliability between the main beam 300 and the body bracket 100.

[0093] As a preferred implementation, Figure 6 As shown, the main beam connection part 3 is provided with a plurality of reinforcing ribs 33 in its extension direction, and the reinforcing ribs 33 are perpendicular to the first connection surface 31 and the second connection surface 32 to further enhance the overall strength of the main beam connection part 3. The reinforcing ribs 33 are connected to the inner side surfaces of the first connection surface 31 and the second connection surface 32 respectively.

[0094] As a preferred implementation, Figure 3 As shown, there is an accommodating space 5 between the main beam connecting portion 3 and the connector frame 4, and the accommodating space 5 is used for the main beam 300 to pass through.

[0095] The electric vehicle has two main beams 300 arranged at intervals in the width direction W. The main beams 300 extend along the length direction of the electric vehicle. The main beam connection portion 3 of the main beam 300 is arranged on both sides of the connector frame 4 in the width direction W of the electric vehicle. The main beam 300 is provided with a connection plate 21 above the main beam 300, so that the main beam 300 is subjected to a more uniform force, which is beneficial for the main beam 300 to carry the body bracket 100 and the battery pack 200 connected to the body bracket 100, reduces the risk of bending of the main beam 300, simplifies the connection between the body bracket 100 and the electric vehicle, and is beneficial to the connection reliability between the body bracket 100 and the vehicle and the battery pack 200. By providing an accommodation space 5 between the main beam connection portion 3 and the connector frame 4 for the main beam 300 to pass through, the space between the main beams 300 is used to place the electric connector frame 4, and at the same time, the connection structure between the body and the main beam 300 is reduced, which is convenient for the connection and disassembly of the two.

[0096] As a preferred implementation, Figure 4 As shown, the main body 211 has a weight-reducing hole 2111 that passes through from top to bottom. In this embodiment, the weight-reducing hole 2111 is arranged in a long strip shape and extends along the width direction W of the electric vehicle; at the same time, the main body 211 is also provided with circular weight-reducing holes 2111 on both sides of the electric vehicle. The utility model does not impose any specific restrictions on the shape and position of the weight-reducing hole 2111, as long as the strength requirements of the connecting plate 21 are met.

[0097] By providing the weight-reducing holes 2111 , the weight of the connecting plate 21 is reduced, which is beneficial to the lightweight design of the vehicle body bracket 100 , and is beneficial for the main beam 300 to carry the vehicle body bracket 100 , thereby improving the connection reliability between the vehicle body bracket 100 and the main beam 300 .

[0098] As a preferred implementation, Figure 5 As shown, the lower surface of the main body 211 is provided with a plurality of weight-reducing portions 2112. In this embodiment, the weight-reducing portions 2112 are provided as grooves that are recessed upward along the lower surface of the main body 211. In other alternative embodiments, the weight-reducing portions 2112 may also be provided, for example, on the upper surface of the main body 211 or at the first flange 212.

[0099] By providing the weight-reducing portion 2112 , the weight of the connecting plate 21 is reduced, which is beneficial to the lightweight design of the vehicle body bracket 100 , and is beneficial for the main beam 300 to carry the vehicle body bracket 100 , thereby improving the connection reliability between the vehicle body bracket 100 and the main beam 300 .

[0100] As a preferred embodiment, the upper surface of the main body 211 is provided with a transverse reinforcement portion 213, and the transverse reinforcement portion 213 extends along the width direction W of the electric vehicle. In this embodiment, the transverse reinforcement portion 213 is a square tube with a rectangular cross section, and two transverse reinforcement portions 213 are arranged at intervals in the length direction L of the electric vehicle. In other alternative embodiments, the transverse reinforcement portion 213 can also be configured to be bent.

[0101] By providing the transverse reinforcement portion 213 , the overall strength of the connecting plate 21 is improved, and the risk of the connecting plate 21 bending along the width direction W of the electric vehicle is reduced, which is beneficial to the connection reliability between the body bracket 100 and the main beam 300 and to the service life of the body bracket 100 .

[0102] As a preferred implementation, Figure 4 As shown, the upper surface of the main body 211 is provided with a longitudinal reinforcing portion 214, and the longitudinal reinforcing portion 214 extends along the length direction L of the electric vehicle. In this embodiment, the longitudinal reinforcing portion 214 is bent, and two longitudinal reinforcing portions 214 are arranged at intervals in the length direction L of the electric vehicle. In other alternative embodiments, the longitudinal reinforcing portion 214 can also be set as a square tube with a rectangular cross-section.

[0103] By providing the longitudinal reinforcement portion 214 , the overall strength of the connecting plate 21 is improved, and the risk of the connecting plate 21 bending along the length direction L of the electric vehicle is reduced, which is beneficial to the connection reliability between the body bracket 100 and the main beam 300 and to the service life of the body bracket 100 .

[0104] As a preferred implementation, Figure 2-Figure 5 As shown, the center beam assembly 2 includes a reinforcing beam 22 , and the reinforcing beam 22 is connected to the connecting plate 21 .

[0105] By providing a reinforcing beam 22 , which is connected to the connecting plate 21 and the battery pack mounting assembly 1 in the width direction W or the length direction L of the electric vehicle, it is beneficial to the connection reliability between the connecting plate 21 and the battery pack mounting assembly 1 and improves the overall strength of the body bracket 100 .

[0106] In this embodiment, two reinforcing beams 22 are arranged at intervals in the length direction L of the electric vehicle. In other alternative embodiments, only one reinforcing beam 22 or more than two reinforcing beams 22 may be arranged, which may be adjusted accordingly according to the length specification and connection strength requirements of the electric vehicle.

[0107] As a preferred implementation, Figure 4 and Figure 5As shown, the connecting plate 21 includes a main body 211 , and the main body 211 is provided with second flanges 215 on both sides along the vehicle width direction W. The second flanges 215 are provided with avoidance gaps 216 for the reinforcing beam 22 to be embedded and connected to the connecting plate 21 .

[0108] The second flange 215 is provided to increase the overall strength of the connecting plate 21 and reduce the risk of bending and deformation of the connecting plate 21 in the horizontal direction. The upper surface or the lower surface of the reinforcing beam 22 can be fitted with the main body 211, increasing the connection area between the reinforcing beam 22 and the connecting plate 21, which is beneficial to the connection reliability between the reinforcing beam 22 and the connecting plate 21. The avoidance notch 216 is provided to facilitate the connection between the reinforcing beam 22 and the connecting plate 21, thereby facilitating the precise installation between the connector frame 4 and the connecting plate 21; and avoiding the second flange 215 from affecting the connection between the reinforcing beam 22, the connecting plate 21 and the connector frame 4, which is beneficial to the lightweight design of the vehicle body bracket 100.

[0109] As a preferred implementation, Figure 4 and Figure 5 As shown, the center beam assembly 2 also includes a reinforcing plate 23 , which is disposed at both ends of the reinforcing beam 22 , and is used to connect the reinforcing beam 22 with the battery pack mounting assembly 1 .

[0110] By providing the reinforcing plate 23, the contact area between the reinforcing beam 22 and the battery pack mounting assembly 1 is increased, thereby improving the connection strength between the reinforcing beam 22 and the battery pack mounting assembly 1, facilitating the setting of the connection structure between the reinforcing beam 22 and the battery pack mounting assembly 1, and reducing the risk of loosening and deformation of the connection position between the reinforcing beam 22 and the battery pack mounting assembly 1, which is beneficial to the connection reliability between the reinforcing beam 22 and the battery pack mounting assembly 1.

[0111] As a preferred implementation, Figure 4 and Figure 5 As shown, the reinforcing plate 23 is a trapezoidal structure, the side of the reinforcing plate 23 close to the battery pack mounting assembly 1 is the long side of the trapezoid, the side of the reinforcing plate 23 away from the battery pack mounting assembly 1 is the short side of the trapezoid, and the side of the reinforcing plate 23 away from the battery pack mounting assembly 1 extends to two adjacent reinforcing beams 22.

[0112] Through the above arrangement, the contact area between the reinforcing beam 22 and the battery pack mounting assembly 1 is increased, while the overall weight of the reinforcing plate 23 is reduced as much as possible, which is beneficial to the lightweight design of the body bracket 100 and further beneficial to the connection reliability between the main beam 300 and the body bracket 100.

[0113] As a preferred implementation, Figure 4 and Figure 5As shown, the reinforcing plate 23 has a bending portion 231 on one side close to the battery pack mounting assembly 1 , and the bending portion 231 is attached to the side surface of the battery pack mounting assembly 1 and connected to the battery pack mounting assembly 1 .

[0114] The bending portion 231 is beneficial to increasing the overall strength of the reinforcing plate 23 and reducing the risk of deformation of the reinforcing plate 23; by providing the bending portion 231, the contact area between the reinforcing plate 23 and the reinforcing beam 22 and the battery pack mounting assembly 1 is further increased, which is beneficial to the connection reliability between the reinforcing plate 23 and the reinforcing beam 22 and the battery pack mounting assembly 1.

[0115] As a preferred implementation, Figure 4 and Figure 5 As shown, the reinforcing plate 23 is also provided with openings 232 to reduce the weight of the reinforcing plate 23, which is beneficial to the lightweight design of the vehicle body bracket 100. As a preferred embodiment, the openings 232 are arranged in alternating triangles, so that the reinforcing plate 23 presents a truss structure in a top view, which is beneficial to the overall strength of the reinforcing plate 23.

[0116] As a preferred implementation, Figure 2 As shown, the battery pack mounting assembly 1 includes a front cross beam 12 and a rear cross beam 13, which are respectively arranged at both ends of the battery pack 200 along the length direction L of the electric vehicle. A locking mechanism 11 is provided on the front cross beam 12 and the rear cross beam 13, and the middle beam assembly 2 is located between the front cross beam 12 and the rear cross beam 13.

[0117] The locking mechanism 11 is located on both sides of the body bracket 100 along the length direction L of the electric vehicle, and the battery pack 200 can be replaced from both sides of the width direction W of the electric vehicle, avoiding occupying the space of the battery pack 200 on the side of the electric vehicle, thereby increasing the volume of the battery pack 200. The middle beam assembly 2 is located between the front cross beam 12 and the rear cross beam 13, and the connector frame 4 is used to be set on the vehicle-end connector 7 connected to the battery pack 200, which facilitates the connection structure between the electric vehicle and the battery pack 200 and simplifies the structure of the body bracket 100.

[0118] As a preferred implementation, Figure 2 and Figure 3 As shown, the front cross beam 12 and the rear cross beam 13 are connected by a connecting beam 14 , and the end of the center beam assembly 2 is connected to the connecting beam 14 .

[0119] The end of the middle beam assembly 2 is connected to the connecting beam 14, which reduces the deformation amount of the connecting beam 14 caused by stress, and is conducive to the connecting beam 14 supporting the distance between the front cross beam 12 and the rear cross beam 13. When the space between the front cross beam 12 and the rear cross beam 13 is used to accommodate the battery pack 200, it is convenient to stabilize the overall structure of the body bracket 100. The front cross beam 12 and the rear cross beam 13 are connected by the connecting beam 14, which supports the front cross beam 12 and the rear cross beam 13, reduces the risk of deformation of the front cross beam 12 and the rear cross beam 13, thereby maintaining the distance between the front cross beam 12 and the rear cross beam 13, and reduces the risk of position deviation of the locking mechanism 11, which is conducive to the successful replacement of the battery pack 200 and the service life of the body bracket 100.

[0120] As a preferred implementation, Figure 3 As shown, the two sides of the connector frame 4 in the width direction W of the electric vehicle are battery pack installation areas 6, and the two vehicle-end connectors 7 are arranged opposite to each other on the side walls of the connector frame 4 in the width direction W of the electric vehicle. The vehicle-end connector 7 is located below the connecting plate 21, and the vehicle-end connector 7 is used to be electrically connected to the battery pack 200. Specifically, the vehicle-end connector 7 includes an electrical connector and a coolant connector, the electrical connector is used to be electrically connected to the battery pack 200, and the coolant connector is used to exchange coolant with the battery pack 200.

[0121] When the battery pack 200 is arranged on both sides of the vehicle-end connector 7 in the left and right directions, the body bracket 100 and the electric vehicle are balanced in the left and right directions. The vehicle-end connector 7 and the battery pack 200 are both located below the connecting plate 21, and the center beam assembly 2 is mounted above the main beam 300. The above-mentioned structural arrangement is conducive to reducing the space occupied by the body bracket 100 and the battery pack 200 in the height direction of the electric vehicle, and is convenient for the arrangement of the body bracket 100 and the battery pack 200.

[0122] The utility model also provides an electric vehicle, such as Figure 1-Figure 6 As shown, the electric vehicle includes a main beam 300 and the above-mentioned vehicle body bracket 100 , and the vehicle body bracket 100 is connected to the main beam 300 through the center beam assembly 2 .

[0123] The battery pack mounting assembly 1 is connected via the center beam assembly 2, thereby simplifying the connection structure between the battery pack mounting assembly 1 and the electric vehicle, and providing the center beam assembly 2 to increase the overall strength of the vehicle body bracket 100; the center beam assembly 2 is cross-set on the vehicle body main beam 300 and connected to the battery pack mounting assembly 1, and the vehicle body main beam 300 is used to support the battery pack mounting assembly 1, which is beneficial to the reliability and convenience of the connection between the overall vehicle body bracket 100 and the vehicle body.

[0124] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A body bracket, arranged on the main beam of an electric vehicle, for connecting and mounting a battery pack, the body bracket comprising a battery pack mounting assembly, the battery pack mounting assembly comprising a locking mechanism for locking and connecting the battery pack, It is characterized in that The vehicle body bracket also includes: The center beam assembly is arranged across the main beam and extends along the width direction of the electric vehicle. Both ends of the center beam assembly extending along the width direction of the electric vehicle are connected to the battery pack mounting assembly. The center beam assembly includes a connecting plate for connecting the connector frame to the bottom of the center beam assembly.

2. The vehicle body bracket according to claim 1, It is characterized in that The connecting plate includes a main body and a first flange bent vertically upward from an edge of the main body. The main body and the first flange are provided with mounting holes, and the mounting holes are used for connection and installation of the connector frame.

3. The vehicle body bracket according to claim 2, It is characterized in that The lower surface of the main body is provided with a main beam connecting portion for connecting with the main beam. The main beam connection portion has a first connection surface and a second connection surface, the first connection surface is connected to the lower surface of the main body, and the second connection surface is perpendicular to the first connection surface and is used to connect to the main beam.

4. The vehicle body bracket according to claim 3, It is characterized in that An accommodating space is provided between the main beam connecting portion and the connector frame, and the accommodating space is used for the main beam to pass through.

5. The vehicle body bracket according to claim 3, It is characterized in that The main body has a weight-reducing hole extending vertically; And / or, a plurality of weight-reducing portions are provided on the lower surface of the main body.

6. The vehicle body bracket according to claim 3, It is characterized in that A transverse reinforcement portion is provided on the upper surface of the main body portion, and the transverse reinforcement portion extends along the width direction of the electric vehicle; And / or, a longitudinal reinforcement portion is disposed on an upper surface of the main body portion, and the longitudinal reinforcement portion extends along a length direction of the electric vehicle.

7. The vehicle body bracket according to claim 1, It is characterized in that The center beam assembly includes a reinforcing beam connected to the connecting plate.

8. The vehicle body bracket according to claim 7, It is characterized in that The connecting plate comprises a main body portion, and second flanges are provided on both sides of the main body portion along the vehicle width direction. The second flanges are provided with avoidance gaps, and the avoidance gaps are used for the reinforcing beam to be embedded and connected to the connecting plate.

9. The vehicle body bracket according to claim 7, It is characterized in that The center beam assembly also includes a reinforcing plate, which is arranged at both ends of the reinforcing beam and is used to connect the reinforcing beam with the battery pack mounting assembly.

10. The vehicle body bracket according to claim 9, It is characterized in that The reinforcing plate is a trapezoidal structure, the side of the reinforcing plate close to the battery pack mounting assembly is the long side of the trapezoid, the side of the reinforcing plate away from the battery pack mounting assembly is the short side of the trapezoid, and the side of the reinforcing plate away from the battery pack mounting assembly extends to two adjacent reinforcing beams; And / or, the reinforcing plate has a bent portion on one side close to the battery pack mounting assembly, and the bent portion is attached to the side surface of the battery pack mounting assembly and connected to the battery pack mounting assembly.

11. The vehicle body bracket according to claim 1, It is characterized in that The battery pack mounting assembly includes a front crossbeam and a rear crossbeam, which are respectively arranged at both ends of the battery pack along the length direction of the electric vehicle. The front crossbeam and the rear crossbeam are provided with locking mechanisms, and the middle beam assembly is located between the front crossbeam and the rear crossbeam.

12. The vehicle body bracket according to claim 11, It is characterized in that The front cross beam and the rear cross beam are connected by a connecting beam, and the end of the middle beam assembly is connected to the connecting beam.

13. The vehicle body bracket according to claim 11, It is characterized in that The connector frame has battery pack installation areas on both sides in the width direction of the electric vehicle, and the connector frame has two vehicle-end connectors arranged back to back on the side walls in the width direction of the electric vehicle. The vehicle-end connectors are located below the connecting plate and are used to electrically connect to the battery pack.

14. An electric vehicle, It is characterized in that The electric vehicle comprises a main beam and a vehicle body bracket as claimed in any one of claims 1 to 13, wherein the vehicle body bracket is connected to the main beam via the center beam assembly.

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