Battery pack assembly and vehicle

Abstract

The invention discloses a battery pack assembly and a vehicle, and the battery pack assembly comprises: a battery pack shell in which a battery mounting cavity is formed; the at least one seat cross beam is arranged in the battery mounting cavity; the installation longitudinal beams are arranged in the battery installation cavity, and the installation longitudinal beams and the seat cross beams are distributed in a crossed mode. According to the battery pack assembly provided by the embodiment of the invention, the battery mounting cavity is formed in the battery pack shell, so that the battery can be mounted and protected, and meanwhile, the at least one seat cross beam and the mounting longitudinal beam are also arranged in the battery mounting cavity, so that the space utilization rate can be improved, the Z-direction occupied space of the seat cross beam in a passenger compartment can be reduced, and the space utilization rate can be improved. The seat cross beams and the mounting longitudinal beams are distributed in a crossed manner, so that the seat cross beams and the mounting longitudinal beams can jointly bear transverse or longitudinal impact force, the impact force is effectively transmitted and dispersed, and the battery pack shell is prevented from invading into the battery mounting cavity to damage a battery.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle manufacturing, and in particular to a battery pack assembly and a vehicle equipped with the battery pack assembly. Background Art

[0002] There is a battery pack shell upper cover assembly, which includes a cover body and at least one cross beam arranged on the upper surface of the cover body. By integrating the cross beam on the cover body, when the collision force acts on the cover body, the cover body can transfer the collision force to the cross beam, and then transfer and disperse it to other structures of the vehicle body through the cross beam, thereby avoiding large deformation of the cover body due to excessive force. However, this form of battery pack structure will occupy the Z-direction space of the passenger compartment and cannot transfer X-direction force, so there is room for improvement. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention proposes a battery pack assembly, which can install and protect the battery, improve the space utilization, reduce the Z-axis space occupied by the seat beam in the passenger compartment, and effectively transmit and disperse the lateral or longitudinal impact force, thereby improving the reliability of protecting the battery.

[0004] According to an embodiment of the present invention, the battery pack assembly includes: a battery pack shell, in which a battery mounting cavity is formed; at least one seat cross beam, wherein the seat cross beam is disposed in the battery mounting cavity; and an installation longitudinal beam, wherein the installation longitudinal beam is disposed in the battery mounting cavity, and the installation longitudinal beam is cross-distributed with the seat cross beam.

[0005] According to the battery pack assembly of the embodiment of the present invention, the battery can be installed and protected by forming a battery installation cavity in the battery pack shell, which can extend the service life of the battery and improve the reliability of the battery operation. At the same time, at least one seat cross beam and an installation longitudinal beam are also arranged in the battery installation cavity, so that the seat cross beam and the installation longitudinal beam can share the space in the battery installation cavity with the battery, which can improve the space utilization rate and reduce the Z-axis space occupied by the seat cross beam in the passenger compartment. In addition, the seat cross beam and the installation longitudinal beam are cross-distributed so that the seat cross beam and the installation longitudinal beam can jointly withstand lateral or longitudinal impact force, effectively transmit and disperse the impact force, avoid the battery pack shell invading the battery installation cavity to damage the battery, and improve the reliability of battery protection.

[0006] According to some embodiments of the present invention, the battery pack assembly further includes a mounting crossbeam, which is disposed on the top outside the battery pack shell and is used to mount a front panel.

[0007] According to some embodiments of the present invention, the battery pack assembly further includes at least one front panel bracket, at least a portion of the front panel is located on the front side of the mounting cross beam, and the front panel bracket is connected between at least a portion of the front panel and the mounting cross beam.

[0008] According to the battery pack assembly of some embodiments of the present invention, at least a portion of the front panel bracket is configured to be connected to the mounting cross beam in an inclined manner downward from front to rear relative to the front panel.

[0009] According to the battery pack assembly of some embodiments of the present invention, there are multiple front panel brackets, and the multiple front panel brackets are distributed at intervals in the lateral direction.

[0010] According to some embodiments of the present invention, the battery pack assembly further includes at least one connection reinforcement plate, which is respectively connected to the front panel and the mounting cross beam.

[0011] According to the battery pack assembly of some embodiments of the present invention, at least one of the connecting reinforcement plates and at least one of the front wall brackets are spaced apart in the lateral direction.

[0012] According to the battery pack assembly of some embodiments of the present invention, a front support beam is connected between the mounting beam and one of the seat beams.

[0013] According to the battery pack assembly of some embodiments of the present invention, there are multiple front support beams, and the multiple front support beams are distributed at intervals in the lateral direction.

[0014] According to some embodiments of the battery pack assembly of the present invention, the battery pack shell includes a front frame, a rear frame and two side beams, the front frame and the rear frame are spaced apart in the longitudinal direction, and the two side beams are spaced apart in the transverse direction and connected between the front frame and the rear frame to jointly define the battery installation cavity.

[0015] According to the battery pack assembly of some embodiments of the present invention, there are multiple seat cross beams, and the multiple seat cross beams are spaced apart in the longitudinal direction.

[0016] According to the battery pack assembly of some embodiments of the present invention, each of the seat cross beams is provided with a connector extending outside the battery pack shell; wherein a rear support beam is provided between the connector of the rearmost seat cross beam and the rear frame; and / or a middle support beam is provided between the connectors of two adjacent seat cross beams, one end of the middle support beam is connected to the connector of the seat cross beam, and the other end of the middle support beam is connected to the side beam and is spaced apart from the connectors of the seat cross beam.

[0017] According to some embodiments of the battery pack assembly of the present invention, the rear support beams are divided into two groups, and the two groups of the rear support beams are symmetrically distributed with respect to the longitudinal direction; and / or, the middle support beams are divided into two groups, and the two groups of the middle support beams are symmetrically distributed with respect to the longitudinal direction.

[0018] In the battery pack assembly according to some embodiments of the present invention, at least one of the rear support beams is connected to one of the middle support beams.

[0019] In the battery pack assembly according to some embodiments of the present invention, the middle support beam and the rear support beam are spaced apart and distributed on the top outside the battery pack shell.

[0020] According to the battery pack assembly of some embodiments of the present invention, a front frame support beam is connected between the front frame and the seat cross beam located at the frontmost position; and / or a rear frame support beam is connected between the rear frame and the seat cross beam located at the rearmost position.

[0021] According to some embodiments of the battery pack assembly of the present invention, there are multiple front frame support beams, which are distributed in the battery installation cavity at intervals along the lateral direction; and / or, there are multiple rear frame support beams, which are distributed in the battery installation cavity at intervals along the lateral direction.

[0022] According to the battery pack assembly of some embodiments of the present invention, the front end of the mounting longitudinal beam is connected to the front frame and the rear end is connected to the rear frame; and / or, the two ends of the seat cross beam are respectively connected to the two side beams.

[0023] In the battery pack assembly according to some embodiments of the present invention, there are multiple seat cross beams, and the multiple seat cross beams are distributed at intervals in the longitudinal direction; wherein each of the seat cross beams is provided with a connecting piece extending to the top of the battery pack shell, and wherein the connecting pieces of at least two of the seat cross beams are used to connect to the seat slide rails.

[0024] The present invention also provides a vehicle.

[0025] A vehicle according to an embodiment of the present invention comprises a battery pack assembly as described in any one of the above embodiments.

[0026] The advantages of the vehicle and the above-mentioned battery pack assembly over the prior art are the same and will not be elaborated here.

[0027] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0029] Figure 1 Schematic diagram of the structure of a battery pack assembly according to an embodiment of the present invention Figure 1 ;

[0030] Figure 2 Schematic diagram of the structure of a battery pack assembly according to an embodiment of the present invention Figure 2 ;

[0031] Figure 3 Schematic diagram of the connection between the battery pack assembly and the front panel according to an embodiment of the present invention Figure 1 ;

[0032] Figure 4 Schematic diagram of the connection between the battery pack assembly and the front panel according to an embodiment of the present invention Figure 2 ;

[0033] Figure 5 The diagram is a schematic diagram of the force transmission of a battery pack assembly according to an embodiment of the present invention when a vehicle is in a head-on collision. Figure 1 ;

[0034] Figure 6 The diagram is a schematic diagram of the force transmission of a battery pack assembly according to an embodiment of the present invention when a vehicle is in a head-on collision. Figure 2 ;

[0035] Figure 7 The diagram is a schematic diagram of the force transmission of a battery pack assembly according to an embodiment of the present invention when a vehicle is in a head-on collision. Figure 3 ;

[0036] Figure 8 is a schematic diagram of force transmission of a battery pack assembly according to an embodiment of the present invention when a vehicle is hit sideways;

[0037] Fig. 9 is a schematic diagram of force transmission of a battery pack assembly according to an embodiment of the present invention when a vehicle is rear-ended;

[0038] Fig.10 is a schematic diagram of installing a battery pack assembly on a vehicle according to an embodiment of the present invention;

[0039] Fig.11 yes Fig.10 Schematic diagram of the cross section at AA in the middle.

[0040] Reference numerals:

[0041] Battery pack assembly 100, vehicle 200,

[0042] Battery pack housing 1, front frame 11, front frame support beam 111, rear frame 12, rear frame support beam 121, side beam 13,

[0043] Seat cross beam 2, front support beam 21, rear support beam 22, middle support beam 23,

[0044] Install the longitudinal beam 3, install the cross beam 4, the front wall bracket 5, connect the reinforcement plate 6, the connecting piece 7,

[0045] The front panel 201 , the seat slide rail 202 , and the door sill beam 203 . DETAILED DESCRIPTION

[0046] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] Unless otherwise specified, the front-to-back direction in this application is the longitudinal direction of the vehicle, that is, the X direction; the left-right direction is the lateral direction of the vehicle, that is, the Y direction; and the up-down direction is the vertical direction of the vehicle, that is, the Z direction.

[0050] Reference below Figure 1-Figure 11A battery pack assembly 100 according to an embodiment of the present invention is described. By forming a battery installation cavity in the battery pack shell 1, the battery can be installed and protected, which can extend the service life of the battery and improve the reliability of the battery operation. At the same time, at least one seat cross beam 2 and an installation longitudinal beam 3 are also arranged in the battery installation cavity, so that the seat cross beam 2 and the installation longitudinal beam 3 can share the space in the battery installation cavity with the battery, which can improve the space utilization rate and reduce the Z-axis occupied space of the seat cross beam 2 in the passenger compartment. In addition, the seat cross beam 2 and the installation longitudinal beam 3 are cross-distributed so that the seat cross beam 2 and the installation longitudinal beam 3 can jointly withstand lateral or longitudinal impact force, effectively transmit and disperse the impact force, avoid the battery pack shell 1 invading the battery installation cavity to damage the battery, and improve the reliability of battery protection.

[0051] like Figure 1-Figure 11 As shown, a battery pack assembly 100 according to an embodiment of the present invention includes: a battery pack housing 1 , at least one seat cross beam 2 and a mounting longitudinal beam 3 .

[0052] A battery installation cavity is formed in the battery pack shell 1; the seat cross beam 2 is arranged in the battery installation cavity; the installation longitudinal beam 3 is arranged in the battery installation cavity, and the installation longitudinal beam 3 and the seat cross beam 2 are cross-distributed.

[0053] Specifically, the battery pack shell 1 serves as the external shell structure of the battery pack assembly 100, and is used to install and protect the battery to prevent damage to the battery and external components due to collision or extrusion, thereby extending the service life of the battery and improving the reliability of the battery operation. A battery installation cavity is formed inside the battery pack shell 1. The battery installation cavity has a certain volume and can provide an installation space for the battery. The battery can be placed in the battery installation cavity to achieve installation and protection of the battery.

[0054] The seat cross beam 2 is used to provide an installation and fixing point for the vehicle seat to ensure that the vehicle seat will not be displaced during the driving of the vehicle 200, thereby ensuring the riding comfort and safety of the passengers. The seat cross beam 2 extends laterally, and when the vehicle 200 has a side collision, it can transmit and disperse the lateral impact force, effectively suppress the deformation of the battery pack shell 1, and prevent the battery pack shell 1 from invading the battery mounting cavity and causing damage to the battery. Moreover, the seat cross beam 2 is arranged in the battery mounting cavity so that the seat cross beam 2 can share the internal space of the battery mounting cavity with the battery pack, thereby improving space utilization and reducing the space occupied by the seat cross beam 2 in the Z direction in the passenger compartment, thereby providing more space for passengers and improving user satisfaction.

[0055] Among them, there is at least one seat cross beam 2, that is, the number of seat cross beams 2 can be one, two or three, etc., and at least one seat cross beam 2 can be used to provide an installation and fixing point for the vehicle seat to achieve the installation and fixation of the vehicle seat, and at least one seat cross beam 2 can be used to transmit and disperse the lateral impact force to protect the safety of the battery.

[0056] At the same time, an installation longitudinal beam 3 is also provided in the battery installation cavity. The installation longitudinal beam 3 extends longitudinally, and can transmit and disperse the longitudinal impact force when the vehicle 200 collides head-on or from behind, thereby effectively suppressing the deformation of the battery pack shell 1 and preventing the battery pack shell 1 from invading the battery installation cavity and causing damage to the battery. The installation longitudinal beam 3 is arranged in the battery installation cavity so that the installation longitudinal beam 3 can share the internal space of the battery installation cavity with the battery and the seat cross beam 2 to further improve space utilization.

[0057] In addition, the seat cross beam 2 extends in the transverse direction, and the installation longitudinal beam 3 extends in the longitudinal direction, so the installation longitudinal beam 3 and the seat cross beam 2 can be cross-distributed, so that the installation longitudinal beam 3 and the seat cross beam 2 can form a stable frame structure to jointly withstand the transverse or longitudinal impact force, transmit and disperse the impact force, and effectively prevent the battery pack shell 1 from invading the battery installation cavity to cause damage to the battery, thereby improving the reliability of battery protection.

[0058] According to the battery pack assembly 100 of the embodiment of the present invention, the battery can be installed and protected by forming a battery installation cavity in the battery pack shell 1, which can extend the service life of the battery and improve the reliability of the battery operation. At the same time, at least one seat cross beam 2 and the installation longitudinal beam 3 are also arranged in the battery installation cavity, so that the seat cross beam 2 and the installation longitudinal beam 3 can share the space in the battery installation cavity with the battery, which can improve the space utilization rate and reduce the Z-axis space occupied by the seat cross beam 2 in the passenger compartment. In addition, the seat cross beam 2 and the installation longitudinal beam 3 are cross-distributed so that the seat cross beam 2 and the installation longitudinal beam 3 can jointly withstand lateral or longitudinal impact force, effectively transmit and disperse the impact force, avoid the battery pack shell 1 invading the battery installation cavity to damage the battery, and improve the reliability of battery protection.

[0059] In some embodiments, the battery pack assembly 100 further includes a mounting crossbeam 4 , which is disposed on the top outside the battery pack housing 1 , and is used to mount the front panel 201 .

[0060] Specifically, the front panel 201 is used to isolate the engine compartment and the passenger compartment, and the mounting beam 4 is used to install the front panel 201, that is, the mounting beam 4 can be connected to the front panel 201 to achieve the installation and fixation of the front panel 201, ensuring that the front panel 201 can work reliably, and the mounting beam 4 is set at the top outside the battery pack shell 1, that is, the front panel 201 and the mounting beam 4 can be connected on the outside of the battery pack shell 1, which can avoid the front panel 201 and the mounting beam 4 occupying the internal space of the battery installation cavity, resulting in the inability to install the battery, and can also avoid the front panel 201 or the mounting beam 4 from squeezing the battery and causing damage.

[0061] For example, Figure 1 As shown, the mounting crossbeam 4 extends laterally, so that the mounting crossbeam 4 has a certain length, so as to increase the connection length between the mounting crossbeam 4 and the front panel 201, thereby improving the reliability of installing and fixing the front panel 201, and the front panel 201 and the mounting crossbeam 4 can be connected by bolts, and the connection method is simple, reliable and easy to operate.

[0062] Also, it should be noted that by installing and fixing the front panel 201 through the mounting crossbeam 4 set on the battery pack shell 1, the central channel structure can be reduced, which is beneficial to reducing the overall weight and installation cost of the vehicle 200, and can increase the front row space and improve the riding comfort of passengers.

[0063] In some embodiments, the battery pack assembly 100 further includes at least one front panel bracket 5 , at least a portion of the front panel 201 is located in front of the mounting crossbeam 4 , and the front panel bracket 5 is connected between at least a portion of the front panel 201 and the mounting crossbeam 4 .

[0064] Specifically, at least part of the front panel 201 is located at the front side of the mounting cross beam 4, that is, when the front panel 201 is connected to the mounting cross beam 4, at least part of the front panel 201 can be extended forward from the mounting cross beam 4 to increase the installation area of ​​the front panel 201, which is conducive to improving the reliability of the front panel 201. The front panel bracket 5 is connected between at least part of the front panel 201 and the mounting cross beam 4, that is, the front panel bracket 5 is arranged on the rear side of at least part of the front panel 201, and the front panel bracket 5 is simultaneously connected to the front panel 201. At least a portion of the front panel bracket 1 is connected to the mounting crossbeam 4, so that the front panel bracket 5 can support the front panel 201, and can transmit and disperse the impact force on the front panel 201, so as to prevent the front panel 201 from invading the passenger compartment under the action of the impact force, and there is at least one front panel bracket 5, that is, the number of the front panel bracket 5 can be one, two or three, etc., and the front panel 201 can be supported by at least one front panel bracket 5, and the impact force can be transmitted and dispersed, so as to suppress the front panel 201 from invading the passenger compartment.

[0065] In some embodiments, at least a portion of the dash panel bracket 5 is configured to be connected to the mounting cross beam 4 at an angle downward from the front to the rear relative to the dash panel 201 .

[0066] Specifically, the dash panel 201 is connected to the mounting crossbeam 4, and at least a portion of the dash panel 201 extends forward from the mounting crossbeam 4, the dash panel bracket 5 is connected between at least a portion of the dash panel 201 and the mounting crossbeam 4, and at least a portion of the dash panel bracket 5 is constructed to be connected to the mounting crossbeam 4 tilted downward from front to rear relative to the dash panel 201, so that at least a portion of the dash panel 201 can be set at a height higher than the mounting crossbeam 4, so that at least a portion of the dash panel 201 can be extended upward to extend between the engine compartment and the passenger compartment to isolate the engine compartment and the passenger compartment. At the same time, the dash panel 201, the dash panel 201 mounting bracket and the mounting crossbeam 4 can form a stable triangular structure together, which is conducive to transmitting the impact force of the head-on collision from the dash panel 201 to the battery pack shell 1, and then to the seat crossbeam 2 and the mounting longitudinal beam 3 for transmission and dispersion, thereby preventing the dash panel 201 from invading the passenger compartment under the action of the impact force to ensure the safety of the passengers.

[0067] In some embodiments, there are multiple dash panel supports 5 , and the multiple dash panel supports 5 are spaced apart in the lateral direction.

[0068] Specifically, the dash panel bracket 5 is used to connect at least part of the dash panel 201 with the mounting crossbeam 4, and the dash panel bracket 5 is arranged in plurality, that is, the number of dash panel brackets 5 can be two, three or more, so that at least part of the dash panel 201 can be connected to the mounting crossbeam 4 through multiple dash panel brackets 5 to improve the connection reliability between the two, thereby improving the reliability of the dash panel bracket 5 in supporting the dash panel 201 and the reliability of transmitting the impact force on the dash panel 201. At the same time, multiple dash panel brackets 5 are distributed at intervals in the transverse direction, so that at least part of the dash panel 201 can be connected to the mounting crossbeam 4 at multiple positions in the transverse direction at the same time, so that the dash panel 201 can be supported at multiple positions at the same time, and the impact force can be transmitted through multiple dash panel brackets 5, thereby effectively preventing the dash panel 201 from invading the passenger compartment under the action of the impact force.

[0069] In some embodiments, the battery pack assembly 100 further includes at least one connecting reinforcement plate 6 , which is respectively connected to the front panel 201 and the mounting cross beam 4 .

[0070] Specifically, the connecting reinforcement plate 6 is connected to the front panel 201 and the mounting crossbeam 4 respectively, that is, the connecting reinforcement plate 6 can be arranged between at least a part of the front panel 201 and the mounting crossbeam 4, so that the connecting reinforcement plate 6 can be connected to the front panel 201 and the mounting crossbeam 4 at the same time, so that the connecting reinforcement plate 6 can support the front panel 201 together with the front panel bracket 5, and can transmit and disperse the impact force on the front panel 201, so as to improve the reliability of the front panel 201 and suppress the intrusion of the front panel 201 into the passenger compartment. There is at least one connecting reinforcement plate 6, that is, the number of connecting reinforcement plates 6 can be one, two or three, etc., and the front panel 201 can be supported together with the front panel bracket 5 by at least one connecting reinforcement plate 6, and the impact force on the front panel 201 can be transmitted and dispersed, so as to effectively suppress the front panel 201 from intruding into the passenger compartment under the action of the impact force.

[0071] In some embodiments, at least one connecting reinforcement plate 6 and at least one front wall bracket 5 are spaced apart in the lateral direction.

[0072] Specifically, at least one connecting reinforcement plate 6 and at least one front panel bracket 5 are connected between at least a portion of the front panel 201 and the mounting crossbeam 4 to jointly support at least a portion of the front panel 201, and can transmit and disperse the impact force on the front panel 201, thereby preventing the front panel 201 from invading the passenger compartment under the action of the impact force. At least one connecting reinforcement plate 6 and at least one front panel bracket 5 are distributed at intervals in the transverse direction, so that at least a portion of the front panel 201 can be connected to the mounting crossbeam 4 at multiple positions in the transverse direction at the same time, so that the front panel 201 can be supported at multiple positions at the same time, and the impact force can be jointly transmitted by at least one front panel bracket 5 and at least one connecting reinforcement plate 6, effectively reducing the possibility of the front panel 201 invading the passenger compartment under the action of the impact force.

[0073] In such Figure 4 In the shown embodiment, the number of connecting reinforcement plates 6 is two, and the number of front panel brackets 5 is three, that is, at least a portion of the front panel 201 can be connected to the mounting crossbeam 4 at the same time through the two connecting reinforcement plates 6 and the three front panel brackets 5, and the two connecting reinforcement plates 6 and the three front panel brackets 5 are distributed at intervals in the lateral direction, so that the front panel 201 can be supported at five positions at the same time, and the impact force on the front panel 201 can be transmitted together through the two connecting reinforcement plates 6 and the three front panel brackets 5, thereby effectively preventing the deformation of the front panel 201 and the intrusion into the passenger compartment.

[0074] In some embodiments, a front support beam 21 is connected between the mounting beam 4 and one of the seat beams 2 .

[0075] Specifically, the mounting crossbeam 4 is located at the front side of the seat crossbeam 2, and a front support beam 21 is connected between the mounting crossbeam 4 and one of the seat crossbeams 2, that is, the two ends of the front support beam 21 in the longitudinal direction are respectively connected to the mounting crossbeam 4 and one of the seat crossbeams 2 to form an impact force transmission channel therebetween, and then, when the vehicle 200 collides head-on, the impact force on the mounting crossbeam 4 can be transmitted along the front support beam 21 to one of the seat crossbeams 2 to transmit the impact force backward, so as to effectively transmit and disperse the impact force, and the front support beam 21 can be connected between the mounting crossbeam 4 and a seat crossbeam 2 closest to the mounting crossbeam 4 to reduce the setting length of the front support beam 21, which is beneficial to increase the structural strength and working reliability of the front support beam 21.

[0076] In some embodiments, there are a plurality of front support beams 21, and the plurality of front support beams 21 are spaced apart in the lateral direction.

[0077] Specifically, the front support beam 21 is connected between the mounting cross beam 4 and one of the seat cross beams 2, and a plurality of front support beams 21 are provided, that is, the number of the front support beams 21 provided can be two, three or more, so that the mounting cross beam 4 and one of the seat cross beams 2 can be connected at the same time through a plurality of front support beams 21, thereby improving the reliability of the connection between the two, that is, improving the reliability of transmitting the impact force on the mounting cross beam 4 to one of the seat cross beams 2, and distributing a plurality of front support beams 21 at intervals in the transverse direction, thereby connecting the mounting cross beam 4 to one of the seat cross beams 2 at a plurality of positions in the transverse direction at the same time, so that the impact force on the mounting cross beam 4 can be transmitted to one of the seat cross beams 2 from a plurality of positions at the same time, thereby further improving the reliability of transmitting and dispersing the impact force.

[0078] In such Figure 3-Figure 10 In the illustrated embodiment, there are four front support beams 21 , and the four front support beams 21 are spaced apart from each other, so that the impact force on the mounting beam 4 can be transmitted to one of the seat beams 2 at four positions simultaneously through the four front support beams 21 , so as to effectively transmit and disperse the impact force.

[0079] In some embodiments, the battery pack shell 1 includes a front frame 11, a rear frame 12 and two side beams 13. The front frame 11 and the rear frame 12 are spaced apart in the longitudinal direction, and the two side beams 13 are spaced apart in the transverse direction and connected between the front frame 11 and the rear frame 12 to jointly define a battery installation cavity.

[0080] Specifically, the battery pack shell 1 includes a front frame 11, a rear frame 12 and two side beams 13. The front frame 11 is located on the front side of the battery pack shell 1, and the rear frame 12 is located on the rear side of the battery pack shell 1. The front frame 11 and the rear frame 12 are distributed along the longitudinal interval, so that a certain distance is provided between the front frame 11 and the rear frame 12 for setting the battery, and the front frame 11 and the rear frame 12 can be used to withstand impact force on the front and rear sides of the battery respectively to protect the battery. At the same time, the two side beams 13 are respectively located on the left and right sides of the battery pack shell 1. The two side beams 13 are distributed along the transverse interval, so that a certain distance is provided between the two side beams 13 for setting the battery, and the two side beams 13 can be used to withstand impact force on the left and right sides of the battery respectively to protect the battery.

[0081] The front frame 11 and the rear frame 12 can be constructed to extend in the transverse direction, and the two side beams 13 can be constructed to extend in the longitudinal direction, so that the two side beams 13 can be connected between the front frame 11 and the rear frame 12 at the same time, that is, the front frame 11, one side beam 13, the rear frame 12 and the other side beam 13 can be connected in sequence to jointly define a battery installation cavity, and then the battery can be set in the battery installation cavity, so that the front frame 11, the rear frame 12 and the two side beams 13 can jointly protect the battery to improve the reliability of battery protection.

[0082] In some embodiments, there are multiple seat cross beams 2, and the multiple seat cross beams 2 are spaced apart in the longitudinal direction.

[0083] Specifically, the seat cross beam 2 is used to provide installation and fixing points for the vehicle seat. The seat cross beam 2 is arranged in plurality, that is, the number of the seat cross beams 2 can be two, three or more, so that the vehicle seat can be provided with installation and fixing points through the plurality of seat cross beams 2 at the same time, so as to improve the reliability of fixing the vehicle seat. The plurality of seat cross beams 2 can be distributed at intervals in the longitudinal direction, so that the vehicle seat can be fixed at multiple positions in the longitudinal direction at the same time, so as to improve the stability of fixing the vehicle seat. A certain distance can be provided between the plurality of seat cross beams 2, so as to avoid interference between the plurality of seat cross beams 2, which may result in the inability to install the vehicle seat or reduce the reliability of the installation of the vehicle seat.

[0084] In some embodiments, each seat cross beam 2 is provided with a connector 7 extending outside the battery pack shell 1; wherein, a rear support beam 22 is provided between the connector 7 of the rearmost seat cross beam 2 and the rear frame 12; and / or, a middle support beam 23 is provided between the connectors 7 of two adjacent seat cross beams 2, one end of the middle support beam 23 is connected to the connector 7 of the seat cross beam 2, and the other end of the middle support beam 23 is connected to the side beam 13 and is spaced apart from the connector 7 of the seat cross beam 2.

[0085] Specifically, each seat cross beam 2 is provided with a connector 7 extending outside the battery pack shell 1, that is, the connector 7 can be extended from the outside of the battery pack shell 1 to the inside and connected to the seat cross beam 2, so as to connect the seat cross beam 2 located in the battery installation cavity with other structural members located outside the battery installation cavity, and the connector 7 can be a bolt sleeve, wherein a rear support beam 22 is provided between the connector 7 of the rearmost seat cross beam 2 and the rear frame 12, that is, the rear frame 12 can be connected to the seat cross beam 2 closest to the rear frame 12 outside the battery installation cavity through the rear support beam 22, so that when the vehicle 200 collides from behind, the impact force on the rear frame 12 can be transmitted along the rear support beam 22 to the seat cross beam 2 located at the rear, so as to transmit and disperse the impact force.

[0086] At the same time, a middle support beam 23 is provided between the connecting pieces 7 of two adjacent seat cross beams 2, one end of the middle support beam 23 is connected to the connecting piece 7 of the seat cross beam 2, and the other end is connected to the side beam 13, that is, the seat cross beam 2 and the side beam 13 can be connected outside the battery installation cavity through the middle support beam 23, so that the impact force transmitted to the seat cross beam 2 can be further transmitted to the side beam 13, so as to further transmit and disperse the impact force, and the middle support beam 23 can also support the side beam 13, transmit and disperse the impact force on the side beam 13, so as to transmit the impact force on the side beam 13 to the opposite side when the vehicle 200 collides with the side, so as to suppress the intrusion of the side beam 13, and the other end of the middle support beam 23 is spaced apart from the connecting piece 7 of the seat cross beam 2, so as to ensure the reliability of the transmission of the impact force between the seat cross beam 2 and the side beam 13.

[0087] In some embodiments, the rear support beams 22 are divided into two groups, and the two groups of rear support beams 22 are symmetrically distributed with respect to the longitudinal direction; and / or, the middle support beams 23 are divided into two groups, and the two groups of middle support beams 23 are symmetrically distributed with respect to the longitudinal direction.

[0088] Specifically, the rear support beam 22 is connected between the rear frame 12 and a seat cross beam 2 located at the rearmost, and is used to transmit the impact force on the rear frame 12 to the seat cross beam 2 located at the rearmost. The rear support beams 22 are arranged into two groups, so that the impact force can be transmitted through the two groups of rear support beams 22 together, and the two groups of rear support beams 22 are distributed symmetrically with respect to the longitudinal direction, that is, the two groups of rear support beams 22 are distributed separately, so as to transmit the impact force of the rear frame 12 to the seat cross beam 2 located at the rearmost at two positions at the same time, so as to effectively improve the reliability of transmitting and dispersing the impact force, and the symmetrical distribution of the two groups of rear support beams 22 can also make the two groups of rear support beams 22 have consistent transmission effects on the impact force on both sides along the longitudinal direction, so as to avoid the rear frame 12 from invading the battery installation cavity due to excessive impact force on one side.

[0089] At the same time, the middle support beam 23 is connected between the seat cross beam 2 and the side beams 13, and is used to transmit the impact force between the seat cross beam 2 and the side beams 13. The middle support beams 23 are arranged into two groups, and the two groups of middle support beams 23 are distributed symmetrically with respect to the longitudinal direction, that is, the two groups of middle support beams 23 are distributed separately, so that the two types of middle support beams 23 are respectively connected to the two side beams 13, so that the impact force can be transmitted between the seat cross beam 2 and the two side beams 13 along the middle support beam 23, and the two groups of middle support beams 23 can respectively support the two side beams 13 with the same effect, so as to avoid the invasion of the side beam 13 caused by excessive impact force on one side.

[0090] In some embodiments, at least one rear support beam 22 is connected to one of the middle support beams 23 .

[0091] Specifically, the rear support beam 22 is connected between the rear frame 12 and a seat cross beam 2 located at the rearmost, and the middle support beam 23 is connected between the seat cross beam 2 and the side beam 13. By connecting at least one rear support beam 22 to one of the middle support beams 23, the rear frame 12 and the side beam 13 can be connected through the rear support beam 22 and the middle support beam 23, so that when the vehicle 200 collides from behind, the impact force on the rear frame 12 can be transmitted to the side beam 13 along the rear support beam 22 and the middle support beam 23 in sequence, thereby effectively suppressing the intrusion of the rear frame 12 and protecting the battery safety.

[0092] For example, Figure 5 and Figure 8-Figure 10 As shown, the two groups of rear support beams 22 include two rear support beams 22 respectively, and the two groups of middle support beams 23 include four middle support beams 23 respectively. The two rear support beams 22 are connected to the two side beams 13 through a middle support beam 23 respectively, so as to ensure that the impact force on the rear frame 12 can be transmitted to the two side beams 13 at the same time, so as to improve the reliability of transmitting and dispersing the impact force, and the two front support beams 21 are connected to the two side beams 13 through a middle support beam 23 respectively, so that the impact force on the front frame 11 can also be transmitted to the two side beams 13 at the same time, which can improve the reliability of transmitting and dispersing the impact force.

[0093] In some embodiments, the middle support beam 23 and the rear support beam 22 are spaced apart and distributed on the top outside the battery pack housing 1 .

[0094] Specifically, the middle support beam 23 is used to connect the seat cross beam 2 and the side beam 13, and the rear support beam 22 is used to connect the rear frame 12 and a seat cross beam 2 located at the rear. The middle support beam 23 and the rear support beam 22 are both arranged at the top outside the battery pack shell 1, so that the middle support beam 23 and the rear support beam 22 can also be used to improve the structural strength of the battery pack shell 1, and can avoid the middle support beam 23 and the rear support beam 22 occupying the internal space of the battery installation cavity, resulting in the inability to install the battery pack. Moreover, the middle support beam 23 and the rear support beam 22 are separated and distributed to facilitate the connection of the middle support beam 23 and the rear support beam 22 to different structural parts respectively, and can also avoid interference between the middle support beam 23 and the rear support beam 22, resulting in reduced reliability in transmitting and dispersing the impact force.

[0095] In some embodiments, a front frame support beam 111 is connected between the front frame 11 and a seat cross beam 2 located at the frontmost position; and / or a rear frame support beam 121 is connected between the rear frame 12 and a seat cross beam 2 located at the rearmost position.

[0096] Specifically, the front frame support beam 111 is connected between the front frame 11 and a seat cross beam 2 located at the front, so that the front frame support beam 111 can be used to support the front frame 11 to improve the structural strength and working reliability of the front frame 11, and the front frame 11 can be connected to a seat cross beam 2 closest to the front frame 11 through the front frame support beam 111, so that when the vehicle 200 collides head-on, the impact force on the front frame 11 is transmitted along the front frame support beam 111 to the seat cross beam 2 located at the front, and at the same time, the rear The frame support beam 121 is connected between the rear frame 12 and a seat cross beam 2 located at the rear end, so that the rear frame support beam 121 can be used to support the rear frame 12 to improve the structural strength and working reliability of the rear frame 12, and the rear frame 12 can be connected to a seat cross beam 2 closest to the rear frame 12 through the rear frame support beam 121, so that when the vehicle 200 collides from behind, the impact force on the rear frame 12 can be transmitted along the rear frame support beam 121 to the seat cross beam 2 located at the rear end, thereby transmitting and dispersing the impact force.

[0097] In some embodiments, there are multiple front frame support beams 111, which are distributed in the battery installation cavity at intervals along the lateral direction; and / or, there are multiple rear frame support beams 121, which are distributed in the battery installation cavity at intervals along the lateral direction.

[0098] Specifically, a plurality of front frame support beams 111 are provided, that is, the number of front frame support beams 111 can be two, three or more, so that the front frame 11 can be supported by a plurality of front frame support beams 111 at the same time, which can improve the reliability of supporting the front frame 11 and the reliability of the operation of the front frame 11, and can improve the reliability of transmitting and dispersing the impact force on the front frame 11, and the plurality of front frame support beams 111 are distributed in the battery installation cavity along the lateral intervals, so as to transmit the impact force on the front frame 11 at multiple positions at the same time, and effectively suppress the intrusion of the front frame 11 into the battery installation cavity.

[0099] At the same time, a plurality of rear frame support beams 121 are provided, that is, the number of rear frame support beams 121 can be two, three or more, so that the rear frame 12 can be supported simultaneously by a plurality of rear frame support beams 121, which can improve the reliability of supporting the rear frame 12 and the reliability of the operation of the rear frame 12, and can improve the reliability of transmitting and dispersing the impact force on the rear frame 12, and the plurality of rear frame support beams 121 are distributed in the battery installation cavity along the lateral intervals, so as to transmit the impact force on the rear frame 12 at multiple positions at the same time, and effectively suppress the intrusion of the rear frame 12 into the battery installation cavity.

[0100] In such Figure 2 In the illustrated embodiment, two front frame support beams 111 are provided, and the two front frame support beams 111 are spaced apart along the lateral direction, which can effectively suppress the intrusion of the front frame 11 into the battery installation cavity. Two rear frame support beams 121 are provided, and the two rear frame support beams 121 are spaced apart along the lateral direction, which can effectively suppress the intrusion of the rear frame 12 into the battery installation cavity.

[0101] And, it should be noted that if Figure 1 As shown, four front frame support beams 111 are connected between the front frame 11 and the mounting beam 4, which can be used to transfer the impact force on the front frame 11 to the mounting beam 4, and then the impact force on the front frame 11 can be transmitted to the mounting beam 4 and the seat beam 2 at the same time, so as to improve the reliability of transmitting and dispersing the impact force.

[0102] In some embodiments, the front end of the mounting longitudinal beam 3 is connected to the front frame 11 and the rear end is connected to the rear frame 12 ; and / or, both ends of the seat cross beam 2 are respectively connected to the two side beams 13 .

[0103] Specifically, the front end of the longitudinal beam 3 is connected to the front frame 11 and the rear end is connected to the rear frame 12, so that the longitudinal beam 3 can be extended in the longitudinal direction, so that the two ends of the longitudinal beam 3 can be respectively connected to the front frame 11 and the rear frame 12, and then the impact force can be transmitted between the front frame 11 and the rear frame 12 through the longitudinal beam 3, that is, the front impact force can be transmitted backward, or the rear impact force can be transmitted forward, so as to improve the reliability of transmitting and dispersing the impact force in the longitudinal direction. At the same time, the two ends of the seat cross beam 2 are respectively connected to the two side beams 13, and the seat cross beam 2 can be extended in the transverse direction, so that the two ends of the seat cross beam 2 are respectively connected to the two side beams 13, so that the seat cross beam 2 can transmit the impact force to the two side beams 13 at the same time, so as to improve the reliability of transmitting and dispersing the impact force in the transverse direction, and the impact force on one side can be transmitted to the opposite side to suppress the intrusion of the side beam 13.

[0104] In some embodiments, there are multiple seat cross beams 2, and the multiple seat cross beams 2 are distributed at intervals along the longitudinal direction; wherein each seat cross beam 2 is provided with a connecting piece 7 extending to the top of the battery pack shell 1, wherein the connecting pieces 7 of at least two seat cross beams 2 are used to connect to the seat slide rails 202.

[0105] Specifically, the seat cross beam 2 is used to provide installation and fixing points for the vehicle seat. The seat cross beam 2 is arranged in plurality, that is, the number of the seat cross beams 2 can be two, three or more, so that the vehicle seat can be provided with installation and fixing points through the plurality of seat cross beams 2 at the same time, so as to improve the reliability of fixing the vehicle seat. The plurality of seat cross beams 2 can be distributed at intervals in the longitudinal direction, so that the vehicle seat can be fixed at multiple positions in the longitudinal direction at the same time, so as to improve the stability of fixing the vehicle seat. A certain distance can be provided between the plurality of seat cross beams 2, so as to avoid interference between the plurality of seat cross beams 2, which may result in the inability to install the vehicle seat or reduce the reliability of the installation of the vehicle seat.

[0106] For example, Figure 2 , Figure 5 and Figure 8-Figure 10 As shown, there are three seat cross beams 2, and the three seat cross beams 2 are spaced apart in the longitudinal direction, so that the vehicle seat can be fixed at three positions at the same time by the three seat cross beams 2, so as to improve the reliability and stability of fixing the vehicle seat.

[0107] Among them, each seat cross beam 2 is provided with a connector 7 extending to the top of the battery pack shell 1, that is, the structural member located outside the battery installation cavity can be connected to the seat cross beam 2 through the connector 7, and the connectors 7 of at least two of the seat cross beams 2 are used to connect with the seat slide rail 202, that is, the seat slide rail 202 can be set outside the battery installation cavity, so as to facilitate the installation and fixation of the vehicle seat through the seat slide rail 202, and two or three of the seat cross beams 2 can be connected to the seat slide rail 202 at the same time through the connector 7 to achieve the fixation of the seat slide rail 202, and then the fixation of the vehicle seat can be achieved, and the seat slide rail 202 can also assist in force transmission when the vehicle 200 collides head-on, that is, the seat slide rail 202 can transmit the force on the front panel 201 support beam to a seat cross beam 2 located in the middle, and further decompose it to the side beam 13, so as to transmit and disperse the impact force.

[0108] In such Fig.10 In the illustrated embodiment, there are four seat slide rails 202, and the four seat slide rails 202 are spaced apart laterally, and the four seat slide rails 202 are simultaneously connected to the front two seat cross beams 2 to achieve reliable installation of the seat slide rails 202, thereby ensuring the reliability and stability of the installation and fixation of the vehicle seat.

[0109] In addition, it should be noted that the connection between the various components in the battery pack assembly 100 can be achieved by welding. The connection by double welding can improve the reliability of the connection. A sill beam 203 is distributed opposite to the side beam 13 on the vehicle 200. The sill beam 203 is connected to the side beam 13, which can realize the transmission and dispersion of the impact force.

[0110] Therefore, by providing the battery pack assembly 100 of the present application, the impact force of the vehicle 200 when it collides can be effectively transmitted and dispersed, and the reliability of battery protection can be effectively improved.

[0111] Among them, when the vehicle 200 is in direct collision, Figure 6 As shown, the force on the dash panel 201 can be transmitted to the dash panel bracket 5 through the installation crossbeam 4, and then decomposed to the front seat crossbeam 2, the installation longitudinal beam 3, the middle support beam 23 and the side beam 13, so as to suppress the dash panel 201 from intruding too much and protect the safety of passengers. Figure 5 As shown, when the front frame 11 is squeezed, impact force transmission paths can be formed inside and outside the battery installation cavity respectively. The external path is: front frame 11-front frame support beam 111-installation beam 4-a seat beam 2 located at the front-sill beam 203, and the internal path is: front frame 11-front frame support beam 111 / installation longitudinal beam 3-a seat beam 2 located at the front-sill beam 203, which can effectively suppress the intrusion of the front frame 11 and protect the safety of the battery.

[0112] When the vehicle 200 is hit sideways, such as a side pole collision, Figure 8 As shown, the lateral force can be transmitted to the side beam 13 through the door sill beam 203, and further decomposed in the Y direction through the middle support beam 23 and the seat cross beam 2, so as to decompose the impact force to the installation longitudinal beam 3 and the door sill beam 203 on the opposite side, so as to realize the transmission and dispersion of the impact force. In particular, the distance between the first two seat cross beams 2 is relatively far. When the impact position is located between the two seat cross beams 2, the middle support beam 23 can effectively suppress the intrusion when the impact point is in a weak area, and can form two force transmission paths inside and outside the battery installation cavity, so as to effectively decompose the impact force to the door sill beam 203 on the opposite side, thereby protecting the battery safety.

[0113] When the vehicle hits 200 meters behind, Fig. 9 As shown, the rear frame 12 is squeezed, and impact force transmission paths can be formed inside and outside the battery installation cavity respectively. The external path is: rear frame 12-rear frame support beam 121-a seat cross beam 2 located at the rear-sill beam 203, and the internal path is: rear frame 12-rear frame support beam 121 / installation longitudinal beam 3-a seat cross beam 2 located at the rear-sill beam 203, which can effectively suppress the intrusion of the rear frame 12 and protect the safety of the battery.

[0114] The present invention also provides a vehicle 200 .

[0115] The vehicle 200 according to the embodiment of the present invention includes a battery pack assembly 100 of any one of the above-mentioned embodiments. By forming a battery installation cavity in the battery pack housing 1, the battery can be installed and protected, which can extend the battery life and improve the reliability of the battery operation. At the same time, at least one seat cross beam 2 and the installation longitudinal beam 3 are also arranged in the battery installation cavity, so that the seat cross beam 2 and the installation longitudinal beam 3 can share the space in the battery installation cavity with the battery, which can improve the space utilization rate and reduce the Z-direction space occupied by the seat cross beam 2 in the passenger compartment. In addition, the seat cross beam 2 and the installation longitudinal beam 3 are cross-distributed so that the seat cross beam 2 and the installation longitudinal beam 3 can jointly withstand the lateral or longitudinal impact force, effectively transmit and disperse the impact force, avoid the battery pack housing 1 invading the battery installation cavity to cause damage to the battery, and improve the reliability of protecting the battery.

[0116] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0117] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A battery pack assembly, characterized in that: include: A battery pack shell (1), wherein a battery installation cavity is formed in the battery pack shell (1); at least one seat crossbeam (2), the seat crossbeam (2) being arranged in the battery installation cavity; A mounting longitudinal beam (3) is provided in the battery mounting cavity, and the mounting longitudinal beam (3) and the seat cross beam (2) are cross-distributed.

2. The battery pack assembly according to claim 1, characterized in that: It also includes a mounting crossbeam (4), which is arranged on the top outside the battery pack shell (1), and is used to mount a front panel (201).

3. The battery pack assembly according to claim 2, characterized in that: It also includes at least one front panel bracket (5), at least part of the front panel (201) is located on the front side of the mounting cross beam (4), and the front panel bracket (5) is connected between at least part of the front panel (201) and the mounting cross beam (4).

4. The battery pack assembly according to claim 3, characterized in that: At least a portion of the dash panel bracket (5) is configured to be connected to the mounting cross beam (4) in an inclined manner downward from front to rear relative to the dash panel (201).

5. The battery pack assembly according to claim 3, characterized in that: There are a plurality of front panel brackets (5), and the plurality of front panel brackets (5) are distributed at intervals in the transverse direction.

6. The battery pack assembly according to claim 3, characterized in that: It also comprises at least one connecting reinforcement plate (6), wherein the connecting reinforcement plate (6) is respectively connected to the front panel (201) and the mounting crossbeam (4).

7. The battery pack assembly according to claim 6, characterized in that: At least one of the connecting reinforcement plates (6) and at least one of the front wall brackets (5) are spaced apart in the transverse direction.

8. The battery pack assembly according to claim 2, characterized in that: A front support beam (21) is connected between the installation beam (4) and one of the seat beams (2).

9. The battery pack assembly according to claim 8, characterized in that: There are a plurality of front support beams (21), and the plurality of front support beams (21) are distributed at intervals in the transverse direction.

10. The battery pack assembly according to any one of claims 1 to 9, characterized in that: The battery pack housing (1) comprises a front frame (11), a rear frame (12) and two side beams (13); the front frame (11) and the rear frame (12) are spaced apart in a longitudinal direction, and the two side beams (13) are spaced apart in a transverse direction and connected between the front frame (11) and the rear frame (12) to jointly define the battery installation cavity.

11. The battery pack assembly according to claim 10, characterized in that: There are a plurality of seat cross beams (2), and the plurality of seat cross beams (2) are distributed at intervals in the longitudinal direction.

12. The battery pack assembly according to claim 11, characterized in that: Each of the seat cross beams (2) is provided with a connecting piece (7) extending outside the battery pack housing (1); Wherein, a rear support beam (22) is provided between the connecting piece (7) of the rearmost seat cross beam (2) and the rear frame (12); And / or, a middle support beam (23) is provided between the connecting pieces (7) of two adjacent seat cross beams (2), one end of the middle support beam (23) is connected to the connecting piece (7) of the seat cross beam (2), and the other end of the middle support beam (23) is connected to the side beam (13) and is spaced apart from the connecting piece (7) of the seat cross beam (2).

13. The battery pack assembly according to claim 12, characterized in that: The rear support beams (22) are in two groups, and the two groups of rear support beams (22) are symmetrically distributed with respect to the longitudinal direction; And / or, the middle support beams (23) are in two groups, and the two groups of middle support beams (23) are symmetrically distributed with respect to the longitudinal direction.

14. The battery pack assembly according to claim 12, characterized in that: At least one of the rear support beams (22) is connected to one of the middle support beams (23).

15. The battery pack assembly according to claim 12, characterized in that: The middle support beam (23) and the rear support beam (22) are distributed at intervals on the top outside the battery pack housing (1).

16. The battery pack assembly according to claim 11, characterized in that: A front frame support beam (111) is connected between the front frame (11) and the seat cross beam (2) located at the frontmost position; And / or, a rear frame support beam (121) is connected between the rear frame (12) and the rearmost seat cross beam (2).

17. The battery pack assembly according to claim 16, characterized in that: The front frame support beams (111) are multiple and are distributed in the battery installation cavity at intervals along the transverse direction; And / or, the rear frame support beams (121) are multiple and are distributed in the battery installation cavity at intervals along the lateral direction.

18. The battery pack assembly according to claim 10, characterized in that: The front end of the mounting longitudinal beam (3) is connected to the front frame (11) and the rear end is connected to the rear frame (12); And / or, the two ends of the seat cross beam (2) are respectively connected to the two side beams (13).

19. The battery pack assembly according to any one of claims 1 to 9, characterized in that: There are a plurality of seat cross beams (2), and the plurality of seat cross beams (2) are spaced apart and distributed in the longitudinal direction; Each of the seat cross beams (2) is provided with a connecting piece (7) extending to the top of the battery pack housing (1), wherein the connecting pieces (7) of at least two of the seat cross beams (2) are used to be connected to the seat slide rails (202).

20. A vehicle, characterized in that: A battery pack assembly comprising any one of claims 1-19.

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