WO2023020175A1

WO2023020175A1 - Vehicle body floor assembly of vehicle, and vehicle

Info

Publication number: WO2023020175A1
Application number: PCT/CN2022/106088
Authority: WO
Inventors: 张德磊; 郭志远; 张海建; 唐丽娟
Original assignee: 蜂巢能源科技股份有限公司
Priority date: 2021-08-17
Filing date: 2022-07-15
Publication date: 2023-02-23
Also published as: CN113548117A; CN113548117B; DE112022000452T5

Abstract

Provided in the present application are a vehicle body floor assembly of a vehicle, and a vehicle. The vehicle body floor of a vehicle assembly comprises: a vehicle body floor; a vehicle body mounting structure, which defines a downward-opening battery mounting cavity together with the vehicle body floor; and a lower shell, which is connected to the vehicle body mounting structure, and configured to close an open end of the battery mounting cavity and support a battery module in the battery mounting cavity. In this way, a gap between an upper shell structure of a traditional vehicle battery pack and a vehicle body structural member can be omitted, and a gap between a frame structure of the traditional vehicle battery pack and the vehicle body structural member can also be omitted, so that more battery modules can be arranged in the battery mounting cavity, thereby increasing the total electric quantity of the battery modules, which is conducive to increasing the driving range of a vehicle.

Description

Vehicle body floor assembly and vehicle

Cross References to Related Applications

This application claims the priority of a Chinese patent application with an application date of August 17, 2021, an application number of 202110941472.7, and an application title of "vehicle body floor assembly and vehicle", the entire contents of which are incorporated in this application by reference.

technical field

The present application relates to the field of vehicle technology, in particular to a vehicle body floor assembly and a vehicle having the vehicle body floor assembly.

Background technique

In related technologies, the traditional vehicle battery pack includes a battery module, an upper case, a lower case, left and right frames, etc., and a gap needs to be reserved between the battery module of the traditional vehicle battery pack, the upper case, and the left and right frames. Moreover, a gap needs to be reserved between the upper shell and the body structure, and a gap needs to be reserved between the left and right frames and the body structure, which will lead to a low space utilization rate of the traditional vehicle battery pack, which is not conducive to enlarging the battery pack The entire package of electricity is not conducive to increasing the driving range of the vehicle.

application content

In view of this, the present application aims to propose a vehicle body floor assembly, the vehicle body floor assembly is coordinated by the body floor, the body mounting structure and the lower case, the battery pack does not need to be provided with an upper case, and can be omitted. The gap between the upper shell structure of the traditional vehicle battery pack and the body structure can also save the gap between the frame structure of the traditional vehicle battery pack and the body structure, and more battery modules can be arranged in the battery installation cavity. The group can increase the total power of the battery module, which is beneficial to increase the mileage of the vehicle.

In order to achieve the above object, the technical solution of the present application is achieved in this way:

A body floor assembly of a vehicle, comprising: a body floor; a body installation structure, the body installation structure and the body floor together define a battery installation cavity open downward; a lower case, the lower case and the body The vehicle body installation structure is connected and used to close the open end of the battery installation cavity, and the lower case is used to support the battery module in the battery installation cavity.

In some examples of the present application, the lower housing is provided with a first supporting beam and a supporting longitudinal beam, and the lower part of the vehicle body floor is provided with a mounting beam and a mounting longitudinal beam, and the first supporting beam and the mounting beam connected, the supporting stringer is connected to the installation stringer.

In some examples of the present application, the lower shell includes: a front side beam, a left side beam, a rear side beam and a right side beam, and the front side beam, the left side beam, the rear side beam and the right side beam are connected end to end in sequence, Both ends of the first supporting beam are respectively connected to the left side beam and the right side beam, and both ends of the supporting longitudinal beam are respectively connected to the front side beam and the rear side beam.

In some examples of the present application, the lower housing is further provided with a second support beam, and two ends of the second support beam are respectively connected to the left beam and the right beam.

In some examples of the present application, the vehicle body installation structure includes: a front cross member, a left door sill beam, a rear cross member and a right door sill beam, and the front cross member, the left door sill beam, the rear cross member and the right door sill beam The head and tail are connected sequentially, and the front side beam, the left side beam, the rear side beam, and the right side beam are correspondingly connected with the front crossbeam, the left threshold beam, the rear crossbeam, and the right threshold beam respectively.

In some examples of the present application, the supporting longitudinal beam is connected to the first supporting beam and the second supporting beam, and the supporting longitudinal beam is arranged above the first supporting beam and the second supporting beam, And it is used for installing the battery module.

In some examples of the present application, the body floor assembly of the vehicle further includes: a front installation box and a rear installation box, the front installation box is arranged at the front end of the lower housing, and the front installation box defines A first installation chamber for installing components, the first installation chamber communicates with the battery installation chamber; the rear installation box is arranged at the rear end of the lower case, and the rear installation box defines a A second installation cavity for installing components, the second installation cavity communicates with the battery installation cavity.

In some examples of the present application, the body floor assembly of the vehicle further includes: a battery management main board, a battery power distribution box, and a battery management slave board, the battery management main board and the battery power distribution box are installed on the In the first installation cavity or the second installation cavity, the battery management slave board is installed in the other of the first installation cavity and the second installation cavity; the front installation box is provided with a front plug panel, and the rear installation box is provided with a rear plug-in panel.

In some examples of the present application, the front installation box includes: a front installation plate and a front cover plate, the front installation plate and the front cover plate define the first installation cavity, and the front installation plate and the front cover plate define the first installation cavity. The lower casing is connected, and the front mounting plate is sealed with the front cover; the rear mounting box includes: a rear mounting plate and a rear cover, and the rear mounting plate and the rear cover define the The second installation cavity, the rear installation plate is connected to the lower housing, and the rear installation plate is sealed in connection with the rear cover.

In some examples of the present application, the vehicle body floor assembly further includes: a water cooling plate, the water cooling plate is arranged between the support longitudinal beam and the support beam, and the water cooling plate is used to support the The battery module described above.

In some examples of the present application, both the installation beam and the installation longitudinal beam are arranged in the battery installation cavity, and a connection harness and a connection copper bar are arranged above the lower housing, and the connection harness and/or The connecting copper bar has an avoidance structure for avoiding the installation beam and the installation longitudinal beam.

In some examples of the present application, the lower surface of the vehicle body installation structure and/or the upper surface of the lower housing is provided with a first sealing groove, the first sealing groove is arranged around the battery installation cavity, and the A first sealing ring is arranged in the first sealing groove.

In some examples of the present application, the body floor assembly of the vehicle further includes: a first heat insulating element and/or a second heat insulating element, the first heat insulating element is arranged on two adjacent batteries Between the modules, the second heat insulating member is arranged between the battery module and the vehicle body floor.

In some examples of the present application, the front side beam and/or the rear side beam are provided with water pipe installation holes.

In some examples of the present application, a water cooling plate is provided between the lower case and the battery module, and a connection harness is pre-embedded between the water cooling plate and the lower case.

Compared with the prior art, the vehicle body floor assembly described in the present application has the following advantages:

According to the body floor assembly of the vehicle of the present application, through the cooperation of the body floor, the body mounting structure and the lower case, the battery pack does not need to be provided with an upper case, and the connection between the upper case structure and the body structure of the traditional vehicle battery pack can be omitted. The gap between the frame structure of the traditional vehicle battery pack and the body structure can also be omitted, and more battery modules can be arranged in the battery installation cavity, thereby increasing the total power of the battery modules, which is beneficial It is beneficial to increase the driving range of the vehicle.

Another object of the present application is to propose a vehicle.

A vehicle includes the above vehicle body floor assembly.

Compared with the prior art, the vehicle body floor assembly of the vehicle has the same advantages as those of the above-mentioned vehicle, and will not be repeated here.

Description of drawings

The drawings constituting a part of the application are used to provide further understanding of the application, and the schematic embodiments and descriptions of the application are used to explain the application, and do not constitute an improper limitation to the application. In the attached picture:

FIG. 1 is a schematic diagram of a vehicle body floor and a vehicle body installation structure described in an embodiment of the present application;

Fig. 2 is an exploded schematic diagram of the vehicle body floor assembly described in the embodiment of the present application;

Fig. 3 is a partial cross-sectional schematic diagram of the vehicle body floor assembly described in the embodiment of the present application;

Fig. 4 is a top view of the lower casing described in the embodiment of the present application;

Fig. 5 is a schematic diagram of the first connecting part, the second connecting part, the third connecting part and the fourth connecting part described in the embodiment of the present application;

Fig. 6 is an exploded schematic diagram of the lower casing described in the embodiment of the present application;

Fig. 7 is a schematic diagram of the lower casing described in the embodiment of the present application;

Fig. 8 is an exploded schematic diagram of the lower casing, parts and battery module described in the embodiment of the present application;

FIG. 9 is an exploded schematic diagram of another angle of the vehicle body floor assembly described in the embodiment of the present application;

Fig. 10 is a schematic cross-sectional view of the first connector described in the embodiment of the present application;

Fig. 11 is a schematic cross-sectional view of the second connector described in the embodiment of the present application;

Fig. 12 is a schematic cross-sectional view of a third connector described in the embodiment of the present application;

Fig. 13 is a schematic diagram of the first connector described in the embodiment of the present application;

Fig. 14 is a schematic diagram of a third connector described in the embodiment of the present application;

Fig. 15 is a schematic diagram of the front side beam described in the embodiment of the present application;

Fig. 16 is a schematic cross-sectional view of the front side beam described in the embodiment of the present application;

Fig. 17 and Fig. 18 are partial structural schematic diagrams of the front side beam described in the embodiment of the present application;

Fig. 19 is a schematic diagram of the water pipe installation hole and water pipe assembly described in the embodiment of the present application;

Fig. 20 is a schematic diagram of the first avoidance hole described in the embodiment of the present application;

Fig. 21 is a schematic diagram of the rear edge beam described in the embodiment of the present application;

Fig. 22 is a schematic diagram of the installation of the lower casing and the battery module described in the embodiment of the present application;

Figure 23 is an enlarged view at A in Figure 22;

Figure 24 is an enlarged view at B in Figure 22;

Fig. 25 is a schematic diagram of the first heat insulation element and the second heat insulation element described in the embodiment of the present application;

Figure 26 is an enlarged view at C in Figure 25;

Fig. 27 is a schematic diagram of the assembly of the connecting wire harness according to the embodiment of the present application.

Explanation of reference signs:

body floor assembly 100;

Body floor 10; battery installation cavity 101; installation beam 102; installation longitudinal beam 103;

Body mounting structure 20; left door sill beam 201; right door sill beam 202; front cross beam 203; rear cross beam 204;

The lower shell 30; the first support beam 301; the support longitudinal beam 302; the raised structure 3021;

The first connecting piece 303; the first bushing 3031; the first fixing nut 3032;

The second connecting piece 304; the second bushing 3041;

The second support beam 305; the third connecting piece 306; the third bushing 3061;

Front side beam 307; first beam body 3071; first installation part 3072; second installation part 3073; first escape hole 3074; water pipe installation hole 3075; water pipe 3076;

left beam 308;

rear side beam 309; second beam body 3091; third installation part 3092; fourth installation part 3093; second escape hole 3094;

Right beam 310; guide plate 311; fourth connecting piece 312; protective plate 313;

battery module 40; water cooling plate 401;

Parts 41; battery power distribution box 402; battery management slave board 403; connection harness 404; rear drive copper bar 405; battery management main board 406; module copper bar 407;

The first avoidance structure 408; the first vertical part 4081; the first horizontal part 4082; the second vertical part 4083;

Avoidance clearance 409; Transverse clearance 4091; Longitudinal clearance 4092;

The second avoidance structure 410; the third vertical part 4101; the second horizontal part 4102; the fourth vertical part 4103;

The main body part 411; the escape section 412; the first fixing bracket 413; the second fixing bracket 414; the first sealing ring 415; the second sealing member 416; the third sealing member 417; the fourth sealing member 418; the fifth sealing member 419; The first heat insulator 420; the second heat insulator 421; the adapter seat 422; the wire harness clip 423;

Front installation box 50; front installation plate 502; front cover 503; front plug-in panel 504; front installation opening 505;

Rear installation box 60 ; rear installation plate 602 ; rear cover 603 ; rear plug-in panel 604 .

Detailed ways

It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

The present application will be described in detail below with reference to the accompanying drawings and embodiments.

As shown in FIGS. 1-27 , a vehicle body floor assembly 100 according to an embodiment of the present application includes: a body floor 10 , a body installation structure 20 and a lower shell 30 .

Wherein, the vehicle body installation structure 20 and the vehicle body floor 10 can jointly define a battery installation cavity 101 , and in the height direction of the vehicle, the battery installation cavity 101 is open and disposed downward. A battery module 40 may be arranged in the battery installation chamber 101, the lower case 30 can be connected with the vehicle body installation structure 20, the lower case 30 can close the open end of the battery installation chamber 101, and the lower case 30 can be supported and arranged on The battery module 40 in the battery installation cavity 101 .

It can be understood that the number of battery modules 40 can be set in multiples, and multiple battery modules 40 can be arranged in the battery installation cavity 101, and multiple battery modules 40 can provide electricity for the vehicle, so that the vehicle can When driving, the amount of electricity stored in the battery module 40 will directly affect the mileage of the vehicle.

The lower case 30 can be arranged corresponding to the vehicle body floor 10. By setting the lower case 30, the battery module 40 can be prevented from falling out of the battery installation cavity 101, and the structural stability of the battery module 40 can be enhanced. It can protect the battery module 40, ensure the working environment of the battery module 40, and enhance the safety of the battery module 40.

In the prior art, a traditional vehicle battery pack includes a battery module, an upper case, a lower case, left and right frames, etc., and a gap needs to be reserved between the battery module of a traditional vehicle battery pack, the upper case, and the left and right frames , and a gap needs to be reserved between the upper shell and the body structure, and a gap needs to be reserved between the left and right frames and the body structure, which will lead to a low space utilization rate of the traditional vehicle battery pack, which is not conducive to increasing the battery capacity. The whole package of electricity in the package is not conducive to increasing the mileage of the vehicle.

However, in the present application, the vehicle body floor 10 and the vehicle body installation structure 20 can jointly define a battery installation cavity 101, and the battery module 40 can be placed in the battery installation cavity 101, so that there is no need to set the upper shell structure of the traditional vehicle battery pack ( It can also be understood that the vehicle body floor 10 and the vehicle body installation structure 20 can be used as the upper shell structure of the traditional vehicle battery pack), the gap between the upper shell structure of the traditional vehicle battery pack and the body structure can be omitted, and the Z-direction space utilization of the battery module 40 (that is, the utilization of the battery module 40 in the height direction of the vehicle can be improved).

Moreover, there is no need to set the left and right frame structures of the traditional vehicle battery pack (it can also be understood that the vehicle body mounting structure 20 can be used as the left and right frame structures of the traditional vehicle battery pack), thereby eliminating the need for the left and right frame structures of the traditional vehicle battery pack. The gap between the vehicle body structural parts can improve the Y-direction space utilization rate of the vehicle, and more battery modules 40 can be arranged on the vehicle, which can increase the total power of the battery modules 40, which is beneficial to increase the battery life of the vehicle. mileage.

Thus, through the cooperation of the vehicle body floor 10, the vehicle body installation structure 20 and the lower case 30, the battery pack does not need to be provided with an upper case, which can save the gap between the upper case structure of the traditional vehicle battery pack and the body structure, and also The gap between the left and right frame structures of the traditional vehicle battery pack and the body structure can be omitted, and more battery modules 40 can be arranged in the battery installation cavity 101, which can improve the space utilization rate of the vehicle in the Y and Z directions, and further The total power of the battery module 40 can be increased, which is beneficial to increase the mileage of the vehicle.

In addition, through the vehicle body floor assembly 100 of the present application, the battery module 40 and the lower case 30 can be installed from bottom to top, so as to meet the needs of the current vehicle production line and meet the quick disassembly and repair of the battery module 40 It is easy to reduce the difficulty of assembling the battery module 40 and reduce the maintenance cost of the battery module 40 .

As some embodiments of the present application, the battery installation cavity 101 is jointly defined by the vehicle body floor 10 and the vehicle body installation structure 20, and the battery module 40 can be placed in the battery installation cavity 101, so that there is no need to set the front and rear frame structures of the traditional vehicle battery pack (It can also be understood that the vehicle body mounting structure 20 can be used as the front and rear frame structures of the traditional vehicle battery pack), so that the gap between the front and rear frame structures of the traditional vehicle battery pack and the body structure can be omitted, and the battery module 40 can be improved. The X-direction space utilization rate can be improved (that is, the utilization rate of the battery module 40 in the longitudinal direction of the vehicle can be improved), and the total power of the vehicle can be further increased.

As some embodiments of the present application, as shown in FIG. 1, FIG. 2 and FIG. The vehicle body mounting structure 20 can be used as the side wall (ie frame structure) of the battery mounting cavity 101, so that the vehicle body mounting structure 20 can be used to protect the battery module 40 in the battery mounting cavity 101, and the battery module 40 can be prevented from being squeezed. , so that safety accidents such as electric leakage and explosion can be avoided, and the safety of the vehicle can be guaranteed.

As some embodiments of the present application, as shown in FIG. 1 , FIG. 2 and FIG. 9 , the vehicle body installation structure 20 can be connected to the vehicle body floor 10 and arranged on the lower surface of the vehicle body floor 10 . 10 can be used as the top wall of the battery installation cavity 101, so that the vehicle body floor 10 can be used to protect the battery module 40 in the battery installation cavity 101, which can avoid safety accidents such as leakage and explosion, and can ensure the use of the battery module 40. safety.

It can be understood that, the vehicle body installation structure 20 and the vehicle body floor 10 are used as vehicle body structural parts, which have relatively high structural strength. The lower surface of the vehicle body floor 10 can use the vehicle body installation structure 20 and the vehicle body floor 10 to protect the battery module 40 in the battery installation cavity 101, thereby ensuring that the battery module 40 can work safely and reliably in the battery installation cavity 101 .

In some embodiments of the present application, as shown in Fig. 1, Fig. 2, Fig. 4, Fig. 6-Fig. A mounting crossbeam 102 and a mounting longitudinal beam 103 may be disposed under the vehicle body floor 10 , the first supporting crossbeam 301 may be connected to the installing crossbeam 102 , and the supporting longitudinal beam 302 may be connected to the installing longitudinal beam 103 .

By connecting the first support beam 301 provided on the lower housing 30 with the installation beam 102 provided below the vehicle body floor 10 , and by connecting the support beam 302 provided on the lower housing 30 with the installation beam 102 provided below the vehicle body floor 10 The 103 connection can improve the structural strength of the battery pack, and can evenly distribute the weight of the battery module 40 on each area of the vehicle body floor 10 , so that the force on the vehicle body floor 10 can be uniform.

In addition, the lower case 30 can be firmly arranged on the lower end of the vehicle body floor 10, which can ensure the firmness of the connection between the lower case 30 and the vehicle body floor 10, so that the lower case 30 can reliably support the battery module 40. Prevent the battery module 40 from falling off from the battery installation cavity 101, and then the lower casing 30 can protect the battery module 40, which can ensure that the battery module 40 has a safe working environment and can ensure that the battery module 40 safety of use.

Optionally, the connection between the installation longitudinal beam 103 and the vehicle body floor 10 and between the installation beam 102 and the vehicle body floor 10 can be carried out by riveting, or, between the installation longitudinal beam 103 and the vehicle body floor 10, between the installation beam 102 and the vehicle body 10 can also be connected by means of a heat flow drill.

It should be noted that the support longitudinal beam 302 and the installation longitudinal beam 103 can provide a force transmission channel for the vehicle frontal collision process, in other words, when the vehicle has a frontal collision, the collision force can be transmitted through the support longitudinal beam 302 and the installation longitudinal beam 103 . Moreover, the first support beam 301 and the installation beam 102 can provide a force transmission channel for the vehicle side collision process, in other words, when the vehicle has a side collision, the collision force can be transmitted through the first support beam 301 and the installation beam 102 . In this way, when the vehicle collides, the battery module 40 in the battery installation cavity 101 can be prevented from being squeezed, thereby improving the safety of the vehicle.

As some embodiments of the present application, as shown in Fig. 1, Fig. 2, Fig. 4, Fig. 6-Fig. A plurality of supporting longitudinal beams 302 may be sequentially arranged at intervals in the width direction of the vehicle, and a plurality of installation longitudinal beams 103 may also be arranged at successive intervals in the width direction of the vehicle, and the plurality of supporting longitudinal beams 302 and the plurality of installation longitudinal beams 103 may be One-to-one correspondence settings. Further, in the height direction of the vehicle, a plurality of installation longitudinal beams 103 may be arranged above the plurality of supporting longitudinal beams 302 , and the plurality of supporting longitudinal beams 302 may be respectively connected to the corresponding installation longitudinal beams 103 .

This setting can ensure the firmness of the connection between the lower shell 30 and the vehicle body floor 10, and can prevent the lower shell 30 from being separated from the vehicle body floor 10, and, by placing a plurality of supporting longitudinal beams 302 and a plurality of mounting longitudinal beams 103 in the width of the vehicle The directions are set at intervals in sequence, so that the weight of the battery module 40 can be evenly distributed in each area of the vehicle body floor 10 , which can ensure that the force of the vehicle body floor 10 is uniform.

As some embodiments of the present application, as shown in Fig. 1, Fig. 2, Fig. 4, Fig. 6-Fig. , and, in the height direction of the vehicle, the first support beam 301 and the installation beam 102 can be arranged oppositely, further, the installation beam 102 can be arranged above the first support beam 301, and the first support beam 301 can be connected with the installation beam 102 set up. Such arrangement can further ensure the firmness of the connection between the lower housing 30 and the vehicle body floor 10 , and can further prevent the lower housing 30 from being separated from the vehicle body floor 10 .

In some embodiments of the present application, as shown in Fig. 2, Fig. 4, Fig. 6-Fig. , the left side beam 308, the back side beam 309 and the right side beam 310 can be connected end to end in turn, the two ends of the first support beam 301 can be connected with the left side beam 308 and the right side beam 310 respectively, and the two ends of the support longitudinal beam 302 can be respectively connected with the front side beam 307 , The rear edge beam 309 is connected.

Optionally, the front side beam 307, the left side beam 308, the rear side beam 309 and the right side beam 310 can be welded and connected end to end. One end of the right beam 310 can be welded and connected, the other end of the left beam 308 can be welded and connected with one end of the rear side beam 309, and the other end of the right side beam 310 can be welded and connected with the other end of the rear side beam 309, and the first The left and right ends of the support beam 301 can be welded to the left beam 308 and the right beam 310 respectively, and the front and rear ends of the support beam 302 can be welded to the front beam 307 and the rear beam 309 respectively.

Thereby, it can be ensured that the lower case 30 has higher structural strength, the impact resistance energy of the lower case 30 can be improved, and the deformation of the lower case 30 can be prevented, so that the battery die caused by the deformation of the lower case 30 can be avoided. If the battery pack 40 is damaged, a safe working environment can be provided for the battery module 40 , and the use safety of the battery module 40 can be guaranteed.

In some embodiments of the present application, as shown in FIG. 4 , FIG. 6 and FIG. 7 , the lower housing 30 can also be provided with a second support beam 305 , and the two ends of the second support beam 305 can be connected to the left beam 308 , respectively. The right beam 310 is connected and arranged.

The number of the second support beams 305 can be set in multiples, and the plurality of second support beams 305 can be respectively arranged on both sides of the first support beam 301 in the longitudinal direction of the vehicle. For example, the number of the second support beams 305 can be set to four, in the longitudinal direction of the vehicle, two of the second support beams 305 can be arranged on one side of the first support beams 301, and the other two second support beams 305 may be arranged on the other side of the first support beam 301 . The left and right ends of the second support beam 305 can be welded to the left beam 308 and the right beam 310 respectively.

In some embodiments of the present application, as shown in Fig. 1, Fig. 2, Fig. 6-Fig. Crossbeam 203, left threshold beam 201, rear crossbeam 204 and right threshold beam 202 can be connected end to end sequentially, and front side beam 307, left side beam 308, rear side beam 309, right side beam 310 can be respectively connected with front crossbeam 203, left threshold beam 201, rear crossbeam 204, the right threshold beam 202 is correspondingly connected.

Optionally, the front beam 203, the left door sill beam 201, the rear beam 204 and the right door sill beam 202 can be welded and connected end to end. The other end of the right threshold beam 202 can be welded and connected to one end of the right threshold beam 202, the other end of the left threshold beam 201 can be welded and connected to one end of the rear cross beam 204, and the other end of the right threshold beam 202 can be welded to the other end of the rear cross beam 204. set up.

Optionally, the vehicle body installation structure 20 can be arranged around the vehicle body floor 10, specifically, the vehicle body installation structure 20 can be arranged around the peripheral edge of the vehicle body floor 10, and the vehicle body installation structure 20 can be used as the side wall (ie, frame) of the battery installation cavity 101. structure), so that the vehicle body installation structure 20 can be used to protect the battery module 40 in the battery installation cavity 101, which can prevent the battery module 40 from being squeezed, thereby avoiding safety accidents such as electric leakage and explosion, and ensuring the safety of the vehicle. Use security.

Optionally, the front and rear ends of the installation longitudinal beam 103 can be welded and connected to the front beam 203 and the rear beam 204 respectively, and the left and right ends of the installation beam 102 can be respectively welded and connected to the left threshold beam 201 and the right threshold beam 202. It is provided that the installation longitudinal beam 103, the installation cross beam 102 and the vehicle body installation structure 20 can be fixedly connected together, which can ensure that the installation longitudinal beam 103 and the installation cross beam 102 can be reliably supported in the battery installation cavity 101, so that the battery module 40 can be provided safe working environment.

In the height direction of the vehicle, the front side beam 307 can be arranged under the front cross member 203, the front side beam 307 and the front cross member 203 can be connected and set by the fourth connecting piece 312, the left side beam 308 can be arranged under the left door sill beam 201, and the left side beam 308 and the left sill beam 201 can be connected and set through the fourth connecting piece 312, the rear side beam 309 can be set under the rear cross beam 204, the rear side beam 309 and the rear cross beam 204 can be connected and set through the fourth connecting piece 312, and the right side beam 310 can be set Below the right door sill beam 202 , the right side beam 310 and the right door sill beam 202 can be connected by a fourth connecting piece 312 .

Optionally, the fourth connecting member 312 may include a fourth bush and a bolt, the lower end of the fourth bush may be fixedly connected to the vehicle body installation structure 20, and the upper end of the fourth bush may extend toward the top of the vehicle body installation structure 20, The bolts can be arranged through the fourth bushing, and the bolts can be threadedly connected with the vehicle body installation structure 20 after passing through the fourth bushing. Certainly, the fourth connecting member 312 may also be only a bolt, which is not limited in the present application. Such setting can ensure the firmness of the connection between the lower case 30 and the vehicle body mounting structure 20 , so that the lower case 30 can support the battery module 40 more reliably, and further ensure the safety of the battery module 40 .

In some embodiments of the present application, as shown in FIG. 4 , FIG. 6 and FIG. 7 , the supporting longitudinal beam 302 can be connected with the first supporting beam 301 and the second supporting beam 305 , and the supporting longitudinal beam 302 can be arranged on the second supporting beam 302 . Above the first support beam 301 and the second support beam 305 , and the support longitudinal beam 302 can be used to install the battery module 40 .

It should be noted that the first support beam 301 and the support longitudinal beam 302 can be arranged in sequence along the height direction of the vehicle, and the first support beam 301 and the support can be passed through the first support beam 303 through the first connecting member 303 extending in the height direction of the vehicle. After the longitudinal beam 302 and the first connecting member 303 pass through the first supporting beam 301 and the supporting longitudinal beam 302 , they can be connected with the installation beam 102 . Such an arrangement can connect the first support beam 301 , the support longitudinal beam 302 and the installation beam 102 together through the first connecting piece 303 , which can ensure the reliability of the connection between the first support beam 301 , the support longitudinal beam 302 and the installation beam 102 .

Optionally, as shown in FIG. 10 and FIG. 13 , the first connecting member 303 may include a first bushing 3031 , a first fixing nut 3032 and a bolt. Wherein, one of the first supporting beam 301 and the supporting longitudinal beam 302 can be fixedly connected with the first bushing 3031, and the first bushing 3031 can pass through the other of the first supporting beam 301 and the supporting longitudinal beam 302 to Set in connection with the first fixing nut 3032.

For example, the first bushing 3031 can be fixedly connected with the first supporting beam 301 , and the first bushing 3031 can pass through the supporting longitudinal beam 302 to be connected with the first fixing nut 3032 . Alternatively, the first bushing 3031 may be fixedly connected to the supporting longitudinal beam 302 , and the first bushing 3031 may pass through the first supporting beam 301 to be connected with the first fixing nut 3032 .

Further, in the height direction of the vehicle, the support longitudinal beam 302 can be arranged above the first support beam 301, the lower end of the first bush 3031 can be fixedly connected with the first support beam 301, and the upper end of the first bush 3031 It can be set through the support stringer 302 , and the upper end of the first bush 3031 can extend toward the top of the support stringer 302 , and the part of the first bush 3031 extending toward the top of the support stringer 302 can be connected with the first fixing nut 3032 , the bolts can be set through the first bushing 3031 , and the bolts can be threadedly connected with the installation beam 102 after passing through the first bushing 3031 .

This setting can further ensure the reliability of the connection between the first supporting beam 301, the supporting longitudinal beam 302 and the installation beam 102, can avoid the separation of the first supporting beam 301, the supporting longitudinal beam 302 and the installation beam 102, and can also facilitate the installation The first support beam 301, the support longitudinal beam 302, and the installation beam 102 are connected together, which can ensure the efficiency of disassembly and assembly of the lower housing 30 and the body floor 10, which is conducive to meeting the needs of quick disassembly and repair of the battery module 40, and can reduce the battery life. Repair cost of module 40.

Further, as shown in FIG. 11 , the first support beam 301 can also be connected to the installation beam 102 after passing through the first support beam 301 through the second connecting member 304 extending in the height direction of the vehicle. In the height direction, the supporting longitudinal beam 302 may be arranged above the first supporting beam 301 . Optionally, the second connecting member 304 may include a second bushing 3041 and a bolt, the lower end of the second bushing 3041 may be fixedly connected to the first support beam 301, and the upper end of the second bushing 3041 may face the first support beam Extending above 301 , bolts can be set through the second bushing 3041 , and the bolts can be threadedly connected with the installation beam 102 after passing through the second bushing 3041 .

It can be understood that, in the height direction of the vehicle, the part of the first supporting beam 301 corresponding to the supporting longitudinal beam 302 can be connected to the installation beam 102 through the first connecting piece 303, and the first supporting beam 301 is not connected to the supporting longitudinal beam 302. The corresponding part can be connected with the installation beam 102 through the second connecting piece 304 . Optionally, multiple connection positions between the first support beam 301 and the installation beam 102 may be arranged at regular intervals along the extending direction of the first support beam 301 . This setting can ensure the firmness of the connection between the first support beam 301 and the installation beam 102, can avoid the separation of the first support beam 301 and the installation beam 102, and can make the force of the first support beam 301 uniform, and can avoid the first support beam 301 from being separated from the installation beam 102. The beam 301 is bent and broken.

Further, as shown in Fig. 6, Fig. 7 and Fig. 12, the second support beam 305 and the support longitudinal beam 302 may be distributed sequentially along the height direction of the vehicle, specifically, in the height direction of the vehicle, the support longitudinal beam 302 may It is arranged above the second supporting beam 305 . And, the second support beam 305 and the support longitudinal beam 302 can be passed through the third connecting member 306 extending in the height direction of the vehicle, and the third connecting member 306 can be installed with the second support beam 305 and the support longitudinal beam 302 The stringers 103 are connected and arranged.

Optionally, as shown in Figure 12, the third connecting member 306 may include a third bushing 3061 and a bolt, the lower end of the third bushing 3061 may be fixedly connected to the second support beam 305, and the upper end of the third bushing 3061 It can be set through the supporting stringer 302, and the upper end of the third bushing 3061 can extend toward the top of the supporting stringer 302, and the bolt can be set through the third bushing 3061, and the bolt can be installed with the third bushing 3061 after passing through the third bushing 3061. Stringer 103 is threaded.

It can be understood that, in the height direction of the vehicle, the part of the support longitudinal beam 302 corresponding to the first support beam 301 can be connected to the installation beam 102 through the first connecting member 303, and the part of the support longitudinal beam 302 corresponding to the second support beam 305 Some parts may be connected to the installation longitudinal beam 103 through the third connecting piece 306 . Optionally, multiple connection positions of the support longitudinal beam 302 and the installation longitudinal beam 103 may be arranged at intervals in the extending direction of the support longitudinal beam 302 . This setting can further ensure the firmness of the connection between the lower case 30 and the vehicle body floor 10, so that the lower case 30 can support the battery module 40 more reliably, and can make the force of the supporting longitudinal beam 302 uniform, and can avoid The support longitudinal beam 302 breaks, so that the service reliability of the vehicle body floor assembly 100 can be ensured.

Optionally, as shown in Figure 1, Figure 2, Figure 4 and Figure 6, the first support beam 301, the second support beam 305, and the installation beam 102 can be extended in the width direction of the vehicle, and the support longitudinal beam 302 and the installation longitudinal beam The beam 103 may extend in the longitudinal direction of the vehicle.

Optionally, as shown in FIG. 6 and FIG. 7 , a plurality of protruding structures 3021 may be provided on the supporting stringer 302 , and the multiple protruding structures 3021 may be arranged at intervals in the extending direction of the supporting stringer 302 . The raised structure 3021 can be used to connect with the battery module 40, optionally, the raised structure 3021 can be connected with the battery module 40 through bolts, in other words, the support beam 302 can be used to install the battery module 40 In this way, the battery module 40 can be firmly installed in the battery installation cavity 101 , and the battery module 40 can be prevented from moving in the battery installation cavity 101 .

As some embodiments of the present application, as shown in Fig. 6 and Fig. 7, a plurality of guide plates 311 can be arranged on the first support beam 301 and the second support beam 305, and the plurality of guide plates 311 can be connected with the first liner respectively. The sleeve 3031, the second bush 3041 and the third bush 3061 are arranged correspondingly, and the guide plate 311 can guide the first bush 3031, the second bush 3041 and the third bush 3061, thereby ensuring that the first bush The sleeve 3031 , the second bushing 3041 and the third bushing 3061 can all be accurately extended along the height direction of the vehicle.

As some embodiments of the present application, as shown in FIG. 6 , the lower housing 30 may further include: a protective plate 313, which may be arranged at the lower end of the lower housing 30, and the protective plate 313 is connected to the front side beam 307, the left side The beam 308 , the rear side beam 309 , the right side beam 310 , the first support beam 301 and the second support beam 305 can all be connected and arranged.

Optionally, the protective plate 313 and the front side beam 307, the left side beam 308, the rear side beam 309, the right side beam 310, the first supporting beam 301 and the second supporting beam 305 can all be connected and set by welding, or the protective plate 313 and The front side beam 307 , the left side beam 308 , the rear side beam 309 , the right side beam 310 , the first support beam 301 and the second support beam 305 can all be connected and arranged by screwing. Moreover, the protective plate 313 is sealed and connected with the front side beam 307 , the left side beam 308 , the rear side beam 309 , the right side beam 310 , the first support beam 301 and the second support beam 305 . Such setting can ensure good sealing of the lower end of the lower case 30 , thereby preventing external dust and water vapor from entering the battery installation chamber 101 from the lower end of the lower case 30 , thereby providing a safe working environment for the battery module 40 .

In some embodiments of the present application, as shown in FIG. 8 , FIG. 9 and FIG. 22 , the body floor assembly 100 may further include: a front installation box 50 and a rear installation box 60 , and the front installation box 50 may be arranged on the lower casing 30, the front mounting box 50 can define a first mounting cavity for installing parts 41, the first mounting cavity can communicate with the battery mounting cavity 101, and the rear mounting box 60 can be arranged at the rear end of the lower housing 30, The rear installation box 60 may define a second installation cavity for installing the components 41 , and the second installation cavity may communicate with the battery installation cavity 101 .

It should be noted that, in the front-rear direction of the vehicle (i.e., the X direction of the vehicle), the front installation box 50 is arranged on the front end of the lower housing 30, and the front installation box 50 can define a first installation cavity, and the first installation cavity is used for installing components. For the components 41 (such as the battery management main board 406 , the battery management slave board 403 , etc.), the first installation cavity communicates with the battery installation cavity 101 . The rear installation box 60 is arranged at the rear end of the lower housing 30, and the rear installation box 60 can define a second installation cavity, which is also used for installing components 41 (such as the battery management main board 406, the battery management slave board 403, etc.) , the second installation cavity communicates with the battery installation cavity 101 .

By setting the front mounting box 50 and the rear mounting box 60 respectively at the front and rear ends of the lower housing 30, the installation difficulty of the components 41 (such as the battery management main board 406, the battery management slave board 403, etc.) The components 41 are installed, and the front mounting box 50 and the rear mounting box 60 can provide protection for the components 41 installed inside, which can prevent the components 41 from being exposed inside the battery pack and prevent the components 41 from being interfered by other structures .

Moreover, since the first installation chamber, the second installation chamber and the battery installation chamber 101 are all communicated with each other, it is convenient to install the components 41 in the first installation chamber and/or the second installation chamber with the battery in the battery installation chamber 101. The connection of the module 40 can shorten the distance between the component 41 and the battery module 40, can reduce the difficulty of connecting the component 41 and the battery module 40, and can also facilitate the installation in the first installation cavity and the second installation cavity. The parts 41 are connected, which can reduce the difficulty of connecting the parts 41.

In some embodiments of the present application, as shown in FIG. 8 , the body floor assembly 100 may include: a battery management main board 406, a battery distribution box 402 and a battery management slave board 403, a battery management main board 406 and a battery distribution box 402 It may be installed in one of the first installation cavity or the second installation cavity, and the battery management slave board 403 may be installed in the other of the first installation cavity and the second installation cavity.

For example, if the battery management board 406 and the battery distribution box 402 are installed in the first installation cavity, the battery management slave board 403 can be installed in the second installation cavity, or, if the battery management board 406 and the battery distribution box 402 are installed In the second installation cavity, the battery management slave board 403 can be installed in the first installation cavity.

Optionally, the battery management slave board 403 can be used to monitor the battery module 40 to obtain information such as the cell voltage and cell temperature of the battery module 40, and the information obtained from the battery management slave board 403 can be transmitted through the communication harness The battery management board 406 can be used to analyze the information and control the battery module 40 to take corresponding actions according to the information to ensure the safety of the battery module 40 during charging and discharging.

Optionally, the battery management mainboard 406 can directly control the battery module 40 to take corresponding actions according to the information, or the battery management mainboard 406 can also control the battery module 40 to take corresponding actions through the battery management slave board 403 .

Optionally, the number of battery modules 40 can be set to multiple, and the number of battery management slave boards 403 can also be set to multiple, and multiple battery management slave boards 403 can be used to obtain single Body voltage, cell temperature and other information, and the information obtained by multiple battery management slave boards 403 can be transmitted to the battery management main board 406 through the communication harness. As a result, the battery management main board 406 can accurately obtain various information of multiple battery modules 40 , thereby further ensuring the safety of the battery modules 40 during charging and discharging.

As an embodiment of the present application, the battery management board 406 and the battery power distribution box 402 can be arranged in the first installation chamber, the battery management slave board 403 can be arranged in the battery installation chamber 101, and the battery management slave board 403 can It is arranged close to the rear installation box 60 , so that the battery management slave board 403 can have various configuration forms, so that the battery management slave board 403 can be conveniently installed.

Further, as shown in FIG. 9 , the front cover 503 may be provided with a front plug-in panel 504, and the rear cover 603 may be provided with a rear plug-in panel 604. By setting the front plug-in panel 504 and the rear plug-in panel 604, the It is convenient to electrically connect the battery module 40 to the electrical equipment, and also to facilitate the electrical connection of the battery module 40 to the charging equipment.

In some embodiments of the present application, as shown in FIG. 8 and FIG. 9 , the front mounting box 50 may include: a front mounting plate 502 and a front cover 503, the front mounting plate 502 may be connected to the lower housing 30, and, The front mounting plate 502 and the front cover plate 503 can be sealed and connected, and the front mounting plate 502 and the front cover plate 503 can jointly define a first installation cavity.

Optionally, the front mounting plate 502 may be connected to the lower casing 30 by welding, specifically, the front mounting plate 502 may be connected to the front side beam 307 by welding, and the front mounting plate 502 and the front cover plate 503 may be The sealing connection is to jointly define a first installation cavity, and the first installation cavity can be used to install components 41 (such as the battery management main board 406, the battery management slave board 403, etc.), so that the components installed in the first installation cavity can be The component 41 provides a safe working environment and can provide protection for the components 41 in the first installation cavity.

Further, as shown in Figures 8 and 9, the rear mounting box 60 may include: a rear mounting plate 602 and a rear cover 603, the rear mounting plate 602 may be connected to the lower housing 30, and the rear mounting plate 602 and the rear cover The plate 603 can be sealed and connected, and the rear mounting plate 602 and the rear cover plate 603 can jointly define a second mounting cavity.

Optionally, the rear mounting plate 602 may be connected to the lower casing 30 by welding, specifically, the rear mounting plate 602 may be connected to the rear side beam 309 by welding, and the rear mounting plate 602 and the rear cover plate 603 may be The sealing connection is to jointly define a second installation cavity, and the second installation cavity can be used to install components 41 (such as the battery management main board 406, the battery management slave board 403, etc.), so that the components installed in the second installation cavity can be set. The component 41 provides a safe working environment and can provide protection for the component 41 in the second installation cavity.

In some embodiments of the present application, as shown in Fig. 9-Fig. Above the first supporting beam 301 and the second supporting beam 305, that is, the water cooling plate 401 can be arranged between the first supporting beam 301, the second supporting beam 305 and the supporting longitudinal beam 302, and the water cooling plate 401 can be used to support the battery module. Group 40.

Optionally, the lower end of the battery module 40 can be provided with thermally conductive glue, and the battery module 40 can be bonded to the water cooling plate 401 through the thermally conductive glue, and the water cooling plate 401 can be used to adjust the temperature of the battery module 40, so that the battery module 40 always works in a suitable temperature range, so as to improve the working efficiency and service life of the battery module 40 .

In some embodiments of the present application, as shown in Fig. 1, Fig. 22-Fig. The wire harness 404 and the connecting copper bar, the connecting wire harness 404 and/or the connecting copper bar may have an avoidance structure for avoiding the installation beam 102 and the installation longitudinal beam 103 .

It should be noted that a connection harness 404 and a connection copper bar are provided above the lower case 30, and the battery management slave board 403 and/or the battery module 40 can be communicated with the battery management main board 406 through the connection harness 404, so that the battery The information of the management slave board 403 and/or the battery module 40 can be transmitted to the battery management main board 406, so that the battery management main board 406 can monitor the battery module 40 in real time, and when the battery module 40 needs to be adjusted, The control signal can be transmitted to the battery module 40 through the connection harness 404 to control the battery module 40 to perform corresponding adjustments, which improves the reliability and safety of the battery module 40 .

The connecting copper bar can be used to realize the electrical connection between devices, such as connecting multiple battery modules 40 in series, so as to centralize external power supply and allow the outside world to charge the multiple battery modules 40 synchronously.

The connecting wire harness 404 and/or the connecting copper bar have an avoidance structure for avoiding the installation beam 102 and the installation longitudinal beam 103 . That is to say, the connection harness 404 can be set to have an avoidance structure for avoiding the installation beam 102 and the installation longitudinal beam 103, or the connection copper bar can be set to have an avoidance structure for avoiding the installation beam 102 and the installation longitudinal beam 103, or it can be set to connect Both the wire harness 404 and the connecting copper bar have an avoidance structure for avoiding the installation beam 102 and the installation longitudinal beam 103 . Wherein, by setting the avoidance structure, during the installation process of the vehicle body floor assembly 100, the installation beam 102, the installation longitudinal beam 103, the connecting wire harness 404 and the connecting copper bar are staggered to avoid the installation of the cross beam 102, the installation longitudinal beam 103 and the connecting wire harness 404 and Interference is generated by the connecting copper bars, so that the connecting wire harness 404 and the connecting copper bars can work stably, improving the reliability of the battery pack.

Optionally, a plurality of battery modules 40 may be included in the battery installation cavity 101, and an avoidance gap 409 is defined between two adjacent battery modules 40, and the connection copper bar includes connecting between two adjacent battery modules 40. The module copper bar 407 has a first avoidance structure 408 that is bent downward to fit the bottom wall of the avoidance gap 409 .

That is to say, as shown in FIGS. 22-24 , the battery modules 40 are arranged longitudinally as a whole, an avoidance gap 409 is provided between the two battery modules 40 distributed along the longitudinal direction, and two module copper bars 407 are provided. , the two module copper bars 407 are arranged along the longitudinal extension, and the two module copper bars 407 are installed in the avoidance gap 409 along the transverse interval, and the two ends of the module copper bars 407 along the longitudinal direction are respectively connected with the two battery modules 40 The electrodes are electrically connected, that is, two adjacent battery modules 40 can be electrically connected through two module copper bars 407, and the two module copper bars 407 are respectively corresponding to the positive and negative electrodes of the battery module 40, so that Two adjacent battery modules 40 can be electrically connected.

Further, the module copper bar 407 is provided with a first avoidance structure 408 bent downward, and the lower side of the first avoidance structure 408 is attached to the bottom wall of the avoidance gap 409, so that the upper side of the first avoidance structure 408 Spaced apart to reserve enough avoidance space, the first avoidance structure 408 is directly opposite to the installation beam 102 and/or the installation longitudinal beam 103, so as to ensure that the module copper bar 407 can effectively avoid the installation beam 102 and/or the installation longitudinal beam 103 , so as to ensure that the module copper bar 407 can work normally.

Optionally, as shown in FIG. 23 , the first avoidance structure 408 includes a first vertical portion 4081 , a first horizontal portion 4082 and a second vertical portion 4083 connected in sequence. The upper end of the first vertical part 4081 is used to electrically connect with one of the two adjacent battery modules 40, and the first vertical part 4081 is attached to one battery module 40, and the first horizontal part 4082 is connected to the avoidance gap. The bottom wall of 409 is attached, the upper end of the second vertical portion 4083 is electrically connected to the other of the two adjacent battery modules 40 , and the second vertical portion 4083 is attached to the other battery module 40 .

Specifically, as shown in Figure 23, the first horizontal portion 4082 is arranged along the longitudinal extension of the vehicle body, the lower side of the first horizontal portion 4082 is attached to the bottom wall of the avoidance gap 409, and the first vertical portion 4081 is connected to the first horizontal portion 4082 is located at the front end of the longitudinal direction and is arranged along the height direction. The front side of the first vertical part 4081 is attached to the rear side of the battery module 40 at the front of the two adjacent battery modules 40, so that The battery module 40 can support the first vertical portion 4081, the upper end of the first vertical portion 4081 extends to the upper side of the pole of the battery module 40, and the upper end of the first vertical portion 4081 is provided with a front extending The first flange, the first flange is provided with a through hole penetrating along the thickness direction, and the connecting piece penetrates through the first flange, so that the first flange is mounted on the front side of two adjacent battery modules 40 on the pole of the battery module 40 to realize the electrical connection between the first vertical portion 4081 and the battery module 40 located at the front side among two adjacent battery modules 40 .

At the same time, the second vertical portion 4083 is connected to the rear end of the first horizontal portion 4082 in the longitudinal direction and is arranged along the height direction. The rear side of the second vertical portion 4083 is attached to two adjacent battery modules 40 The center is located at the front side of the battery module 40 at the rear, so that the battery module 40 can support the second vertical part 4083, and the upper end of the second vertical part 4083 extends to the upper side of the pole of the battery module 40 , the upper end of the second vertical portion 4083 is provided with a second flange extending backward, and the second flange is provided with a through hole penetrating in the thickness direction, and the connecting piece penetrates through the second flange to attach the second flange installed on the post of the battery module 40 on the rear side among the two adjacent battery modules 40, so that the second vertical part 4083 can be connected with the battery module on the rear side among the two adjacent battery modules 40. 40 electrical connections.

It can be understood that the first avoidance structure 408 is attached to the inner peripheral wall of the avoidance gap 409, so that the inner peripheral wall of the avoidance gap 409 can support the first avoidance structure 408, which improves the stability of the first avoidance structure 408, and The two ends of the module copper bar 407 are stably installed with the two battery modules 40 respectively through two connecting pieces, which further improves the installation stability of the first avoidance structure 408 .

In some embodiments, a plurality of battery modules 40 are spaced apart in a matrix on the upper surface of the lower housing 30 , and the plurality of battery modules 40 define a longitudinal gap 4092 for avoiding the mounting longitudinal beam 103 and a longitudinal gap 4092 for avoiding The lateral clearance 4091 of the beam 102 is installed.

That is to say, as shown in FIGS. 22-24 , the battery module group 40 includes two groups spaced apart in the longitudinal direction, and each group of battery modules 40 is provided with a plurality of The plurality of battery modules 40 are facing one by one along the longitudinal direction, so that the plurality of battery modules 40 are distributed in a matrix, so as to facilitate the heat dissipation of the battery modules 40 . At the same time, a transverse gap 4091 is provided between the two groups of battery modules 40. The transverse gap 4091 is set opposite to the installation beam 102. The installation beam 102 can extend into the transverse gap 4091 from the upper side. There is a longitudinal gap 4092 between the groups 40, and the longitudinal gap 4092 is set opposite to the installation longitudinal beam 103. The installation longitudinal beam 103 can extend into the transverse gap 4091 from the upper side, thereby realizing the installation of the installation beam 102, the installation longitudinal beam 103 and the battery module. Avoidance of group 40.

Further, the connecting copper bar also includes a rear driving copper bar 405, the rear driving copper bar 405 includes a main part 411 and a second avoidance structure 410, the main part 411 is connected to the second avoiding structure 410, and the main part 411 is eccentrically arranged in the longitudinal gap 4092 and the main body portion 411 extends longitudinally, the second avoidance structure 410 extends into the transverse gap 4091 , and the second avoidance structure 410 is attached to the bottom wall of the transverse gap 4091 . It should be noted that the battery management board 406 and the entire package of rear drive plug-ins are respectively arranged at both ends of the battery pack along the longitudinal direction, the rear drive copper bar 405 extends longitudinally as a whole to penetrate the battery pack, and the main part 411 of the rear drive copper bar 405 The two ends are respectively electrically connected to the battery management main board 406 and the whole package of rear drive plug-in, and two rear drive copper bars 405 can be arranged to correspond to the positive and negative poles respectively, so as to realize the high-voltage communication between the battery management main board 406 and the whole pack of rear drive plug-in.

Wherein, the main part 411 is disposed eccentrically in the longitudinal gap 4092 , for example, the main part 411 can be disposed close to the battery module 40 on one side, so that the main part 411 is separated from the battery module 40 on the other side. As shown in the figure, the main body part 411 is arranged eccentrically in the longitudinal gap 4092 and adjacent to the battery module 40 on the right side, so that the main part 411 is spaced apart from the battery module 40 on the left side and a large installation space is reserved. space, and the installation space is open upwards. In this way, after the lower case 30 and the battery module 40 are installed, they are installed upwards on the vehicle body installation structure 20. At this time, the installation longitudinal beam 103 can be arranged facing the installation space, and the installation longitudinal beam 103 can be stretched out. In the installation space, the eccentric installation of the installation longitudinal beam 103 in the longitudinal gap 4092 is realized, that is, the rear drive copper bar 405 can effectively avoid the installation longitudinal beam 103 .

Further, as shown in FIG. 24 , a second avoidance structure 410 is provided between the two main body parts 411 . The second avoidance structure 410 is connected to the main body parts 411 by bending and protrudes laterally to extend into the transverse gap 4091 on the corresponding side. Inside, by arranging the second avoidance structure 410 to fit the bottom wall of the transverse gap 4091, the second avoidance structure 410 can avoid the installation beam 102 in the transverse gap 4091, so that the rear drive copper bar 405 can pass through the main part 411 is eccentrically arranged in the longitudinal gap 4092 to avoid the installation of the longitudinal beam 103, and the second avoidance structure 410 can be attached to the bottom wall of the transverse gap 4091 to avoid the installation of the beam 102, so as to realize the rear drive copper bar 405 at the same time Dodging with the installation longitudinal beam 103 and the installation cross beam 102 ensures that the lower case 30 , the battery module 40 and the vehicle body installation structure 20 can be installed smoothly.

In some embodiments, the second avoidance structure 410 includes a third vertical portion 4101 , a second horizontal portion 4102 and a fourth vertical portion 4103 connected in sequence. Wherein the upper end of the third vertical portion 4101 is connected to one section of the main body portion 411 and the third vertical portion 4101 is attached to the side wall of the transverse gap 4091 , and the second horizontal portion 4102 is attached to the upper surface of the lower housing 30 The upper end of the fourth vertical portion 4103 is connected to another section of the main body portion 411 and the fourth vertical portion 4103 is attached to the other side wall of the transverse gap 4091 .

Specifically, as shown in Figure 24, the second horizontal portion 4102 is arranged along the longitudinal extension of the vehicle body, the lower side of the second horizontal portion 4102 is in contact with the bottom wall of the transverse gap 4091, and the lower part of the third vertical portion 4101 is connected to the second The horizontal part 4102 is located at the front end of the longitudinal direction and is arranged along the height direction. The front side of the third vertical part 4101 is attached to the rear side of the battery module 40 on the front side, so that the battery module 40 can be aligned with the second Three vertical parts 4101 are supported, and the upper part of the third vertical part 4101 extends toward the longitudinal gap 4092, so that the third vertical part 4101 is configured as an inverted L-shaped structure, and one end of the upper part of the third vertical part 4101 is connected to the main body Section 411 is connected to one section at the front.

At the same time, the lower part of the fourth vertical part 4103 is connected to the rear end of the second horizontal part 4102 in the longitudinal direction, and is arranged along the height direction. The rear side of the fourth vertical part 4103 is attached to the battery mold at the rear The front side of the group 40, so that the battery module 40 can support the fourth vertical part 4103, and the upper part of the fourth vertical part 4103 extends toward the longitudinal gap 4092, so that the fourth vertical part 4103 is configured as an inverted L Type structure, one end of the upper part of the fourth vertical part 4103 is connected with a section of the main body part 411 at the rear side.

It can be understood that the second avoidance structure 410 is attached to the inner peripheral wall of the transverse gap 4091, so that the inner peripheral wall of the transverse gap 4091 can support the second avoidance structure 410, and ensure that the second avoidance structure 410 can support the installation beam 102 Effective avoidance improves the installation rationality of the rear drive copper bar 405 .

Furthermore, the connecting wire harness 404 is extended on the outside of two adjacent battery modules 40 , and the connecting wire harness 404 extends along the arrangement direction of the two adjacent battery modules 40 , and the connecting wire harness 404 is facing the avoidance gap 409 A avoidance section 412 is provided at a position of , and the avoidance section 412 is bent downward to fit the upper surface of the lower casing 30 .

That is to say, as shown in FIG. 22 and FIG. 23 , the connecting wire harness 404 is arranged around the outermost sides of a plurality of battery modules 40, so that the connecting wire harness 404 can be connected with each battery module 40 to meet the requirements of connecting multiple battery modules. 40 design requirements, and the layout can be completed by simple bending, reducing the bending requirements of the connecting wire harness 404, reducing the difficulty of layout, thereby saving processing costs, and facilitating inspection and maintenance. Wherein, when the connecting wire harness 404 passes through the avoidance gap 409 of the two battery modules 40, the connecting wire harness 404 is bent downwards to form a corresponding avoidance section 412 that fits on the upper side of the lower housing 30, thereby avoiding the connection of the wire harness. 404 interferes with the installation beam 102 and the installation longitudinal beam 103, which improves the stability of the connecting wire harness 404.

In some embodiments, the body floor assembly 100 of the embodiment of the present application further includes: a first fixing bracket 413 and a second fixing bracket 414, the escape section 412 is fixed to the lower case 30 through the first fixing bracket 413, and is connected to The wire harness 404 is fixed to the battery module 40 through the second fixing bracket 414 .

That is to say, as shown in FIG. 23 , the first fixing bracket 413 can be taken as two, and the two first fixing brackets 413 are arranged at intervals along the extension direction of the connection harness 404 at the lower housing 30 , and the height of the first fixing bracket 413 is Lower than the lower surface of the installation beam 102 and the installation longitudinal beam 103, the escape section 412 of the connecting wire harness 404 passes through the two first fixing brackets 413 in sequence, so that the avoidance section 412 is spaced apart from the installation beam 102 and the installation longitudinal beam 103 , so that the installation beam 102 and the installation longitudinal beam 103 cannot interfere with the normal operation of the connecting wire harness 404, and the stability of the connecting wire harness 404 is improved.

Further, the second fixing bracket 414 is also taken as two, and the two second fixing brackets 414 are respectively arranged at the side walls of two adjacent battery modules 40 , and the second fixing ring is connected to the second fixing ring along the extending direction of the connecting wire harness 404 A fixed bracket 413 is arranged at intervals, so that the connecting wire harness 404 is configured as a U-shaped structure with both sides extending upward and sloping outward at the avoiding section 412, so as to reduce the bending degree of the connecting wire harness 404 and improve the flexibility of the connecting wire harness 404. stability.

In some embodiments of the present application, as shown in FIG. 9 , the lower surface of the vehicle body mounting structure 20 and/or the upper surface of the lower housing 30 may be provided with a first sealing groove, and the first sealing groove may surround the battery installation cavity 101 set, and a first seal ring 415 may be set in the first seal groove.

Wherein, the first sealing groove can be provided on the lower surface of the vehicle body mounting structure 20, or the first sealing groove can be provided on the upper surface of the lower casing 30, or the lower surface of the vehicle body mounting structure 20 and the upper surface of the lower casing 30 can be arranged. A first sealing groove is provided.

It can be understood that, as shown in FIG. 9 , the first sealing ring 415 is configured as an annular elastic structure corresponding to the first sealing groove, and the first sealing groove is used to limit the installation of the first sealing ring 415, so that the first sealing ring 415 A sealing ring 415 may be fixed between the vehicle body mounting structure 20 and the lower housing 30 . Wherein, when the first sealing ring 415 is installed in the first sealing groove and the lower casing 30 is installed on the vehicle body installation structure 20, one end of the first sealing ring 415 can be pressed against the upper surface of the lower casing 30, and the second The other end of a sealing ring 415 is pressed against the lower surface of the vehicle body installation structure 20 .

Wherein, the first sealing groove is arranged around the battery installation cavity 101, so that the first sealing ring 415 can cooperate with the vehicle body floor 10, the vehicle body installation structure 20 and the lower case 30 to completely seal the battery installation cavity 101, thereby The battery module 40, the water cooling plate 401, the battery management slave board 403, the connecting wire harness 404 and the connecting copper bars are enclosed in the battery installation cavity 101 to prevent external impurities from interfering with the normal operation of the battery pack and improve the safety of the battery pack.

In some embodiments, the first sealing groove is disposed on the lower surface of the vehicle body installation structure 20, the first sealing ring 415 is installed in the first sealing groove, and the first sealing ring 415 protrudes downwards to the outside of the first sealing groove, Such that the first sealing ring 415 abuts against the upper surface of the lower casing 30 . That is to say, the lower surface of the vehicle body mounting structure 20 is provided with a first sealing groove open downward, the first sealing ring 415 can be installed in the first sealing groove, and the size of the first sealing ring 415 along the height direction is larger than the first sealing groove. For the depth of the sealing groove, after the first sealing ring 415 is installed in the first sealing groove, the first sealing ring 415 protrudes from the first sealing groove and extends downward. The lower surface of the first sealing ring 415 presses against the upper surface of the lower casing 30 , thereby realizing the sealing of the battery installation cavity 101 .

It can be understood that by arranging the first sealing groove in the vehicle body installation structure 20, the relative position of the first sealing ring 415 and the battery installation cavity 101 remains fixed, which reduces the influence during the installation process of the lower case 30 and improves the The installation accuracy ensures the reliability of the sealing structure.

In some embodiments, the lower surfaces of the left sill beam 201 and the right sill beam 202 are respectively provided with groove structures extending in the longitudinal direction, and the lower surfaces of the front crossbeam 203 and the rear crossbeam 204 are respectively provided with groove structures extending in the transverse direction , a plurality of groove structures are connected in the circumferential direction to define a first sealing groove surrounding the battery installation cavity 101 .

Optionally, as shown in FIG. 9, a second sealing member 416 surrounding the first installation cavity may be provided between the front mounting plate 502 and the front cover plate 503, and the second sealing member 416 may be configured as a ring structure. The second sealing member 416 can be arranged around the circumference of the first installation cavity, that is, the second sealing member 416 can be configured as a sealing ring. After the front cover plate 503 is installed on the front mounting plate 502, the second sealing member 416 can seal the first An installation cavity, so as to prevent foreign impurities from entering the first installation cavity.

In some embodiments, as shown in FIG. 9 , the front cover 503 can be provided with a front installation opening 505, which can be used to install the front insertion panel 504, and a third seal can be provided at the front installation opening 505. 417, the third seal 417 can be pressed between the front plug-in panel 504 and the edge of the front installation opening 505, so as to prevent foreign impurities from entering the first installation cavity.

Optionally, as shown in FIG. 9, a fourth sealing member 418 surrounding the second installation cavity may be provided between the rear mounting plate 602 and the rear cover plate 603. The fourth sealing member 418 may be configured as an annular structure. The four seals 418 can be arranged around the circumference of the second installation cavity, that is, the fourth seal 418 can be configured as a seal ring, and when the rear cover 603 is installed on the rear installation plate 602, the fourth seal 418 can be completely The second installation cavity is sealed to prevent foreign impurities from entering the second installation cavity.

In some embodiments, as shown in FIG. 9 , the rear cover 603 may be provided with a rear installation port, the rear installation port may be used to install the rear insertion panel 604 , and a fifth sealing member 419 may be provided at the rear installation port, The fifth sealing member 419 can be pressed between the rear insertion panel 604 and the edge of the rear installation opening, so as to prevent foreign impurities from entering into the second installation cavity.

In some embodiments of the present application, as shown in FIG. 25 , the vehicle body floor assembly 100 may further include: a first heat insulator 420 and/or a second heat insulator 421, and the first heat insulator 420 may be disposed on a corresponding Adjacent to the two battery modules 40 , the second heat insulator 421 may be disposed between the battery module 40 and the vehicle body floor 10 .

It should be explained that the first heat insulating element 420 and the second heat insulating element 421 can be selectively set according to actual installation requirements, that is, the first heat insulating element 420 can be set alone, or the second heat insulating element can be set alone 421, or, the first heat insulating member 420 and the second heat insulating member 421 can be provided at the same time.

That is, the first heat insulator 420 is located between two adjacent battery modules 40 to separate the two adjacent battery modules 40 so as to avoid heat transfer between the battery modules 40 , so that each The battery modules 40 can realize independent heat dissipation to meet the heat dissipation requirements of the battery modules 40, and the second heat insulator 421 is arranged between the battery module 40 and the vehicle body floor 10, so as to prevent the battery module 40 from contacting the vehicle body floor 10. Heat transfer occurs between them, thus, by disposing the first heat insulating member 420 and/or the second heat insulating member 421 , the risk of thermal runaway of the battery module 40 can be reduced, and the safety of the battery module 40 can be enhanced.

Optionally, the first heat insulating member 420 can be configured as a mica board, wherein, it should be noted that the material of the mica board can be mica, and the mica material has insulation, high heat resistance and high structural strength, so that one of the When problems such as thermal runaway occur in the battery module 40, prevent thermal runaway from causing impact on other battery modules 40, that is, prevent thermal runaway of one battery cell from causing thermal runaway of other battery cells, and reduce thermal runaway of the battery module 40 risk, and the mica plate set in this way has excellent insulation performance and good rigidity at high temperature, can play the role of insulation support, and enhance the safety of the battery module 40 .

Optionally, the first heat insulator 420 can be attached to the battery module 40, that is, the first heat insulator 420 is in surface contact with the battery module 40, so that the first heat insulator 420 can be enlarged. The contact area with the battery module 40 ensures that the first heat insulating member 420 can fully play the role of heat insulation between adjacent battery modules 40, and through such an arrangement, the space utilization of the battery module 40 can be enhanced rate, and at the same time, it is convenient to reduce the overall volume of the battery module 40.

Optionally, the first heat insulator 420 is detachably connected to the battery module 40, which facilitates the installation and disassembly of the first heat insulator 420 and the battery module 40, reduces the difficulty of assembling the two, and improves production efficiency. And it is convenient to replace the first heat insulating member 420 or the battery module 40 separately when there is a problem with the first heat insulating member 420 or the battery module 40 , which reduces maintenance difficulty and enhances the practicability of the battery module 40 .

Further, there may be multiple second heat insulating members 421, and the number of second heat insulating members 421 can be flexibly set according to actual usage requirements, wherein, the number of second heat insulating members 421 can be set according to the number of battery modules 40 Setting, that is, the number of second heat insulating members 421 can be the same according to the number of battery modules 40, so that a plurality of second heat insulating members 421 cover the upper surfaces of a plurality of battery modules 40 in one-to-one correspondence, thereby ensuring Each second heat insulator 421 can realize the function of separating each battery module 40 from the vehicle body floor 10, so as to avoid heat transfer between the battery module 40 and the vehicle body floor 10, and reduce the heat loss of the battery module 40. The risk of thermal runaway ensures the safety of the battery module 40 .

Further, the area of the second heat insulator 421 is not smaller than the area of the upper surface of the battery module 40, that is, the contact area between the second heat insulator 421 and the vehicle body floor 10 is not smaller than the area between the upper surface of the battery module 40 and the second insulation. The contact area of the thermal element 421, so that when the second insulating element 421 is covered on the upper surface of the battery module 40, the second insulating element 421 can be used to fully separate the battery module 40 from the vehicle body floor 10, ensuring convenient Avoid heat transfer between the battery module 40 and the vehicle body floor 10 , and reduce the risk of thermal runaway of the battery module 40 .

In some embodiments, the second heat insulation member 421 is made of a buffer heat insulation material, that is to say, the second heat insulation member 421 can be configured as a buffer insulation layer, and the material of the buffer insulation layer can be a buffer heat insulation foam , the heat insulation of the buffer heat insulation foam can be used to insulate between the battery module 40 and the vehicle body floor 10, so as to avoid heat transfer between the battery module 40 and the vehicle body floor 10, and reduce battery life. The risk of thermal runaway of the module 40 ensures the safety of the battery module 40, and the cushioning and heat-insulating foam can also absorb collision energy, so that when the battery module 40 is hit or shaken, the cushioning and heat-insulating foam can absorb The effect of collision energy acts as a buffer between the battery module 40 and the vehicle body floor 10, preventing rigid contact between the battery module 40 and the vehicle body floor 10, and enhancing the safety of the battery module 40. At the same time, due to the buffer The material of the heat-insulating foam is relatively light, and will not affect the overall weight of the battery module 40 , which facilitates the lightweight design of the battery module 40 and enhances the practicability of the battery module 40 .

In some embodiments of the present application, as shown in FIG. 15 , FIG. 17 and FIG. 19 , the front side rail 307 and/or the rear side rail 309 may be provided with water pipe installation holes 3075 . It should be noted that the front side rail 307 may be provided with a water pipe installation hole 3075, or the rear side rail 309 may be provided with a water pipe installation hole 3075, or both the front side rail 307 and the rear side rail 309 may be provided with a water pipe installation hole 3075.

As an embodiment of the present application, as shown in Fig. 15, Fig. 17 and Fig. 19, the front side beam 307 may be provided with a water pipe installation hole 3075, optionally, the front side beam 307 may be provided with two water pipe installation holes 3075, the water pipe 3076 may include a water inlet pipe and a water outlet pipe, and the water inlet pipe and the water outlet pipe may respectively pass through the two water pipe installation holes 3075. Both the water inlet pipe and the water outlet pipe may be connected to the water cooling plate 401, and the cooling water may flow into the water cooling plate 401 through the water inlet pipe. , and the cooling water can flow out of the water-cooled plate 401 through the water outlet pipe, so that the water-cooled plate 401 can have a continuous flow of cooling water, which can ensure that the water-cooled plate 401 can reliably adjust the temperature of the battery module 40, so that the battery module Group 40 is always working within a suitable temperature range.

Optionally, the two water pipe installation holes 3075 can be respectively arranged on both sides of the first escape hole 3074, so that the two water pipes 3076 can be prevented from interfering with each other.

As another embodiment of the present application, the rear edge beam 309 may be provided with a water pipe installation hole 3075. Optionally, the rear edge beam 309 may be provided with two water pipe installation holes 3075, and the water pipe 3076 may include a water inlet pipe and an outlet pipe. The water inlet pipe and the water outlet pipe can pass through the two water pipe installation holes 3075 respectively, and both the water inlet pipe and the water outlet pipe can be connected to the water cooling plate 401. The cooling water can flow into the water cooling plate 401 through the water inlet pipe, and the cooling water can flow out of the water cooling plate through the water outlet pipe. plate 401.

Optionally, the two water pipe installation holes 3075 can be respectively arranged on both sides of the second escape hole 3094, so that the two water pipes 3076 can be prevented from interfering with each other.

As yet another embodiment of the present application, both the front side rail 307 and the rear side rail 309 may be provided with a water pipe installation hole 3075 , and optionally, both the front side rail 307 and the rear side rail 309 may be provided with a water pipe installation hole 3075 . Wherein, the water inlet pipe can be arranged through the water pipe installation hole 3075 on the front side beam 307 , and the water outlet pipe can be arranged through the water pipe installation hole 3075 on the rear side beam 309 . Or, the water inlet pipe can be arranged through the water pipe installation hole 3075 on the rear side beam 309, and the water outlet pipe can be arranged through the water pipe installation hole 3075 on the front side beam 307, and the cooling water can flow into the water cooling plate 401 through the water inlet pipe, and the cooling water can be The water cooling plate 401 flows out through the water outlet pipe. Such setting can make the water pipe installation holes 3075 have various layout forms, so that the water pipe installation holes 3075 can be provided in the front side beam 307 and/or the rear side beam 309 conveniently.

Optionally, as shown in FIGS. 6-8 and 14-16, the front side beam 307 may include a first beam body 3071 and a first installation part 3072, and the first installation part 3072 may be connected to the first beam body 3071. , and, in the longitudinal direction of the vehicle (that is, the front-rear direction of the vehicle), the first mounting part 3072 can be arranged in front of the first beam body 3071, and the first beam body 3071 can be used to connect with the vehicle body mounting structure 20, the first installation The portion 3072 may be connected to the front mounting box 50 at the front end of the lower case 30 .

Optionally, the first installation part 3072 and the first beam body 3071 can be connected by welding, or the first installation part 3072 and the first beam body 3071 can also be configured as an integral molding. The first beam body 3071 can be arranged in connection with the vehicle body installation structure 20 , specifically, the first beam body 3071 can be arranged in connection with the front cross member 203 , and the first installation part 3072 can be arranged in a sealed connection with the front installation box 50 . This setting can seal the front mounting box 50 and the front side beam 307 together, and can improve the integration degree of the battery pack.

Optionally, as shown in FIGS. 6-8 and 14-16, the front side rail 307 may further include a second mounting portion 3073, which may be connected to the first beam body 3071, and the vehicle In the longitudinal direction of the vehicle (that is, the front-rear direction of the vehicle), the second installation part 3073 can be arranged behind the first beam body 3071, and the front end of the water-cooled plate 401 of the lower case 30 can be connected with the second installation part 3073.

Optionally, the second mounting part 3073 and the first beam body 3071 can be connected by welding, or the second mounting part 3073 and the first beam body 3071 can also be constructed as an integral molding. Preferably, the first mounting The part 3072, the first beam body 3071 and the second mounting part 3073 are constructed as an integral molding, and the structural strength of the integral molding is relatively high. Moreover, in the longitudinal direction of the vehicle, the front end of the water cooling plate 401 of the lower case 30 and the second mounting portion 3073 can be connected and set by bonding, or the front end of the water cooling plate 401 of the lower case 30 can be connected to the second mounting portion 3073. 3073 can also be connected and set by screw connection. Such setting can ensure the installation stability of the water cooling plate 401, can avoid the movement of the water cooling plate 401, thereby can ensure the firmness of the bonding between the water cooling plate 401 and the battery module 40, and can ensure that the water cooling plate 401 can efficiently adjust the battery module 40 temperature.

Optionally, as an embodiment of the present application, the end of the battery module 40 close to the second installation part 3073 can be connected to the second installation part 3073, in other words, the second installation part 3073 can be used to install the battery The module 40 is arranged in such a way that the battery module 40 can be firmly installed in the battery installation cavity 101 , and the battery module 40 can be prevented from moving in the battery installation cavity 101 .

Further, as shown in FIG. 6-FIG. 8 and FIG. 21, the rear edge beam 309 may include a second beam body 3091 and a third mounting portion 3092, and the third mounting portion 3092 may be connected to the second beam body 3091, and, in In the longitudinal direction of the vehicle (that is, the front-rear direction of the vehicle), the third mounting part 3092 can be arranged behind the second beam body 3091, the second beam body 3091 can be used to connect with the vehicle body mounting structure 20, and the third mounting part 3092 can be connected with The rear installation box 60 at the rear end of the lower housing 30 is connected and arranged.

Optionally, the third installation part 3092 and the second beam body 3091 can be connected by welding, or the third installation part 3092 and the second beam body 3091 can also be configured as an integral molding. The second beam body 3091 can be arranged in connection with the vehicle body installation structure 20 , specifically, the second beam body 3091 can be arranged in connection with the rear cross member 204 , and the third installation part 3092 can be arranged in a sealed connection with the rear installation box 60 . This setting can seal the rear mounting box 60 and the rear side beam 309 together, and can improve the integration degree of the battery pack.

Optionally, as shown in Fig. 6-Fig. 8 and Fig. 21, the rear side beam 309 may also include a fourth mounting part 3093, which may be connected with the second beam body 3091, and, in the longitudinal direction of the vehicle, (that is, the front-rear direction of the vehicle), the fourth installation part 3093 can be arranged in front of the second beam body 3091 , and the rear end of the water cooling plate 401 of the lower case 30 can be connected with the fourth installation part 3093 .

Optionally, the fourth installation part 3093 and the second beam body 3091 can be connected by welding, or the fourth installation part 3093 and the second beam body 3091 can also be constructed as an integral molding. Preferably, the third installation The part 3092, the second beam body 3091 and the fourth mounting part 3093 are constructed as an integral molding, and the structural strength of the integral molding is relatively high. Moreover, in the longitudinal direction of the vehicle, the rear end of the water cooling plate 401 of the lower case 30 and the fourth mounting portion 3093 can be connected and set by bonding, or the rear end of the water cooling plate 401 of the lower case 30 can be connected to the fourth mounting portion 3093 . The installation part 3093 can also be connected and arranged by screwing. Such setting can further ensure the installation stability of the water-cooled plate 401, can further prevent the water-cooled plate 401 from moving, thereby can further ensure the firmness of the bonding between the water-cooled plate 401 and the battery module 40, and can further ensure that the water-cooled plate 401 can be efficiently Adjust the temperature of the battery module 40 .

Optionally, as an embodiment of the present application, the end of the battery module 40 close to the fourth installation part 3093 can be connected to the fourth installation part 3093, in other words, the fourth installation part 3093 can be used to install the battery The module 40 is arranged in this way so that the battery module 40 can be more firmly installed in the battery installation cavity 101 , and can prevent the battery module 40 from moving in the battery installation cavity 101 .

Optionally, as shown in Fig. 6, Fig. 7, Fig. 15, Fig. 17, and Fig. 20, the front side rail 307 may be provided with a first avoidance hole 3074, and the first avoidance hole 3074 may be provided through the front side rail 307 along the front-rear direction of the vehicle. Moreover, the first avoidance hole 3074 can communicate with the battery installation cavity 101 and the front installation box 50 , specifically, the first avoidance hole 3074 can communicate with the first installation cavity defined by the front installation box 50 and the battery installation cavity 101 . The rear drive copper bar 405 and the communication wire harness can be arranged through the first avoidance hole 3074, which can facilitate the arrangement of the rear drive copper bar 405 and the communication wire harness.

Further, as shown in FIG. 21 , the rear side beam 309 can be provided with a second avoidance hole 3094, and the second avoidance hole 3094 can be arranged through the rear side beam 309 along the front-rear direction of the vehicle, and the second avoidance hole 3094 can communicate with the battery installation cavity 101 and the rear installation box 60 , specifically, the second escape hole 3094 can communicate with the second installation cavity defined by the rear installation box 60 and the battery installation cavity 101 . The rear drive copper bar 405 and the communication wire harness can also be arranged through the second avoidance hole 3094, which makes it easier to arrange the rear drive copper bar 405 and the communication wire harness.

In some embodiments of the present application, as shown in FIG. 9-FIG. 14 and FIG. A connection harness 404 may be pre-embedded between them.

It can be understood that a water cooling plate 401 may be provided between the lower case 30 and the battery module 40, that is, the water cooling plate 401 may be used to separate the battery module 40 from the lower case 30, so that the lower case 30 and the lower case 30 There is no direct contact between the battery modules 40 to prevent the heat of the battery modules 40 from being transferred to the lower casing 30, and the temperature of the battery modules 40 can be cooled by the water cooling plate 401, thereby reducing the risk of thermal runaway of the battery modules 40, The safety of the battery module 40 is enhanced.

Wherein, a connecting wire harness 404 is pre-embedded between the water cooling plate 401 and the lower case 30, that is to say, the connecting wire harness 404 in the battery pack can be pre-embedded in the space between the water cooling plate 401 and the lower case 30 It is convenient to make full use of the installation space between the water cooling plate 401 and the lower case 30, improve the space utilization rate in the battery pack, reduce the structural size of the battery pack, and be embedded between the water cooling plate 401 and the lower case 30 The connecting wire harness 404 is not directly visible, which is convenient to enhance the aesthetics of the battery pack. At the same time, the water cooling plate 401 and the lower case 30 can support and protect the connecting wire harness 404, thereby enhancing the structural stability of the connecting wire harness 404.

It should be noted that, in this application, the connecting wire harness 404 can surround the water cooling plate 401 between the water cooling plate 401 and the lower housing 30 along the circumference of the water cooling plate 401, so as to reduce the difficulty of pre-embedding the connecting wire harness 404 and facilitate the shortening of the connecting wire harness The connection distance between 404 and other electrical components reduces the difficulty of connection between the connecting wire harness 404 and other electrical components.

Further, as shown in FIG. 27 , the vehicle body floor assembly 100 may further include: an adapter seat 422 which may be installed on the lower shell 30 so as to fix the adapter seat 422 on the lower shell 30 , The structural stability of the adapter base 422 is enhanced, and at least part of the adapter base 422 protrudes from the water-cooled plate 401 , so that the connection harness 404 is electrically connected to the electrical components at the adapter base 422 through an adapter wire.

That is to say, the connecting wire harness 404 embedded between the water cooling plate 401 and the lower housing 30 realizes the connection with other electrical components through the adapter seat 422 and the transfer wire, that is, the transfer wire is arranged between the transfer base 422 and other electrical components. between the interfaces of the electrical components, so as to shorten the length of the wire harness connecting the wire harness 404 and other electrical components, and facilitate the simplification of the wiring harness installation structure of the battery pack.

Further, as shown in FIG. 27 , the lower housing 30 may be provided with a wire harness clip 423, the wire harness clip 423 may be arranged in a semi-circular structure, and a plurality of wire harness clips 423 may be provided. The wire harness clips 423 can be distributed at intervals in the circumferential direction of the lower housing 30, and a plurality of wire harness clips 423 can be used to fix the connecting wire harness 404, so that the connecting wire harness 404 can be fixed and installed through the wire harness clips 423 On the lower housing 30 , the connecting wire harness 404 is prevented from being displaced or moved, and the structural stability of the connecting wire harness 404 is enhanced.

The vehicle according to the embodiment of the present application includes the body floor assembly 100 of the above-mentioned embodiment. Through the cooperation of the body floor 10, the body mounting structure 20 and the lower case 30, the battery pack does not need to be provided with an upper case, and the traditional vehicle battery can be omitted. The gap between the upper shell structure of the battery pack and the body structure can also save the gap between the left and right frame structures of the traditional vehicle battery pack and the body structure, and more battery modules can be arranged in the battery installation cavity 101 40, the space utilization rate of the vehicle in the Y direction and the Z direction can be improved, and the total power of the battery module 40 can be increased, which is beneficial to increase the driving range of the vehicle.

The above descriptions are only preferred embodiments of the application, and are not intended to limit the application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the application shall be included in the scope of the application. within the scope of protection.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial" , "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device or Elements must have certain orientations, be constructed and operate in certain orientations, and thus should not be construed as limiting the application.

In the description of this application, "first feature" and "second feature" may include one or more of these features.

In the description of this application, "plurality" means two or more.

In the description of the present application, a first feature being "on" or "under" a second feature may include that the first and second features are in direct contact, and may also include that the first and second features are not in direct contact but pass through them. Additional feature contacts between.

In the description of the present application, "above", "above" and "above" the first feature on the second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than Second feature.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" is intended to mean that the implementation A specific feature, structure, material, or characteristic described by an embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present application. The scope of the application is defined by the claims and their equivalents.

Claims

A vehicle body floor assembly (100), characterized by comprising:

body floor (10);

A vehicle body installation structure (20), the vehicle body installation structure (20) and the vehicle body floor (10) jointly define a downwardly open battery installation cavity (101);

a lower case (30), the lower case (30) is connected to the vehicle body installation structure (20) and used to close the open end of the battery installation cavity (101), and the lower case (30) It is used to support the battery module (40) in the battery installation cavity (101).
The vehicle body floor assembly (100) according to claim 1, characterized in that, the lower shell (30) is provided with a first support beam (301) and a support longitudinal beam (302), and the body floor (10) is provided with installation beams (102) and installation longitudinal beams (103), the first support beam (301) is connected with the installation beam (102), and the support beam (302) is connected with the Install stringer (103) connection.
The vehicle body floor assembly (100) according to claim 2, characterized in that the lower shell (30) comprises: a front side beam (307), a left side beam (308), a rear side beam (309) and a right side beam Beam (310), the front side beam (307), the left side beam (308), the rear side beam (309) and the right side beam (310) are connected end to end in sequence, and the first support beam (301) The two ends are respectively connected to the left beam (308) and the right beam (310), and the two ends of the supporting longitudinal beam (302) are respectively connected to the front beam (307) and the rear beam (309) .
The vehicle body floor assembly (100) according to claim 3, characterized in that, the lower housing (30) is also provided with a second support beam (305), and the second support beam (305) The two ends are respectively connected with the left beam (308) and the right beam (310).
The vehicle body floor assembly (100) according to claim 3 or 4, characterized in that the vehicle body installation structure (20) comprises: a front beam (203), a left door sill beam (201), a rear beam (204 ) and the right threshold beam (202), the front beam (203), the left threshold beam (201), the rear beam (204) and the right threshold beam (202) are connected end to end in turn, and the front side beam (307), the left side beam (308), the rear side beam (309), the right side beam (310) and the front beam (203), the left threshold beam (201), the rear beam (204), the right door sill beam (202) is correspondingly connected.
The vehicle body floor assembly (100) according to claim 4 or 5, characterized in that, the support longitudinal beam (302), the first support beam (301) and the second support beam (305) are both connected, the support longitudinal beam (302) is arranged above the first support beam (301) and the second support beam (305), and is used for installing the battery module (40).
The vehicle body floor assembly (100) according to any one of claims 3-6, further comprising: a front installation box (50) and a rear installation box (60), the front installation box ( 50) It is arranged at the front end of the lower casing (30), the front installation box (50) defines a first installation cavity for installing parts (41), and the first installation cavity is installed with the battery Cavity (101) is connected;

The rear installation box (60) is arranged at the rear end of the lower casing (30), and the rear installation box (60) defines a second installation cavity for installing components (41), the second The installation cavity communicates with the battery installation cavity (101).
The vehicle body floor assembly (100) according to claim 7, further comprising: a battery management main board (406), a battery power distribution box (402) and a battery management slave board (403), the battery The management board (406) and the battery power distribution box (402) are installed in the first installation cavity or the second installation cavity, and the battery management slave board (403) is installed in the first installation cavity and the second installation cavity. in the other of the second installation cavities;

The front installation box (50) is provided with a front plug-in panel (504), and the rear installation box (60) is provided with a rear plug-in panel (604).
The vehicle body floor assembly (100) according to claim 7 or 8, characterized in that, the front installation box (50) comprises: a front installation plate (502) and a front cover (503), the front The installation plate (502) and the front cover plate (503) define the first installation cavity, the front installation plate (502) is connected with the lower casing (30), and the front installation plate (502 ) and the front cover (503) are hermetically connected;

The rear installation box (60) includes: a rear installation plate (602) and a rear cover (603), the rear installation plate (602) and the rear cover (603) define the second installation cavity, The rear mounting plate (602) is connected with the lower casing (30), and the rear mounting plate (602) is sealed and connected with the rear cover plate (603).
The vehicle body floor assembly (100) according to any one of claims 6-9, characterized in that it further comprises a water cooling plate (401), the water cooling plate (401) is arranged on the support longitudinal beam ( 302) and the supporting beam, the water cooling plate (401) is used to support the battery module (40).
The vehicle body floor assembly (100) according to any one of claims 1-10, characterized in that, the installation beam (102) and the installation longitudinal beam (103) are both arranged on the battery installation cavity (101), and above the lower casing (30) are provided with a connecting wire harness (404) and a connecting copper bar, and the connecting wire harness (404) and/or the connecting copper bar have features for avoiding the An avoidance structure for installing the crossbeam (102) and the installation longitudinal beam (103).
The vehicle body floor assembly (100) according to any one of claims 1-11, characterized in that, the lower surface of the vehicle body installation structure (20) and/or the lower shell (30) The upper surface is provided with a first sealing groove, the first sealing groove is arranged around the battery installation cavity (101), and a first sealing ring (415) is arranged in the first sealing groove.
The vehicle body floor assembly (100) according to any one of claims 1-12, further comprising: a first heat insulating member (420) and/or a second heat insulating member (421), The first heat insulating element (420) is arranged between two adjacent battery modules (40), and the second heat insulating element (421) is arranged between the battery module (40) and the battery module (40). Between the body floor (10).
The vehicle body floor assembly (100) according to any one of claims 10-13, characterized in that, the front side beam (307) and/or the rear side beam (309) are provided with water pipe installation holes ( 3075).
The vehicle body floor assembly (100) according to any one of claims 1-14, characterized in that a water cooling plate is provided between the lower case (30) and the battery module (40) (401), and a connection harness (404) is pre-embedded between the water cooling plate (401) and the lower casing (30).
A vehicle, characterized by comprising the vehicle body floor assembly (100) according to any one of claims 1-15.