CN117681972A

CN117681972A - Vehicle body floor integrated structure, tray structure of battery pack of vehicle body floor integrated structure and runner plate of vehicle body floor integrated structure

Info

Publication number: CN117681972A
Application number: CN202211073869.XA
Authority: CN
Inventors: 赵明明
Original assignee: Shanghai Jidu Automobile Co Ltd
Current assignee: Shanghai Jidu Automobile Co Ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2024-03-12

Abstract

The embodiment of the application provides a vehicle body floor integrated structure and tray structure and runner board of battery package thereof, wherein the runner board of tray structure has heat exchange structure, can provide the heat dissipation effect to battery module. When the tray structure is combined with the vehicle body floor, an outer shell of the battery pack can be formed in the accommodating space of the vehicle body beam, good cladding property of the battery module is provided, the battery structure and the vehicle structure are integrated into a whole, the development quantity of vehicle body parts can be reduced, the cost is saved, and the sharing degree of the chassis is improved.

Description

Vehicle body floor integrated structure, tray structure of battery pack of vehicle body floor integrated structure and runner plate of vehicle body floor integrated structure

Technical Field

The application relates to the field of electric automobiles, in particular to a vehicle body floor integrated structure.

Background

In the electromotive process of an automobile, a battery system is used as one of the most important parts of the whole automobile. One of the means for improving the core competitiveness of the whole vehicle product and the user perception experience is the high integration of the battery system arrangement and the integration degree between the battery system arrangement and the vehicle body structure. However, the arrangement redundancy of relevant components in the battery system is complex, the number of structural members is large, and the structure is not compact, so that the problems of poor integration level of the battery system, difficult integration with a vehicle body and the like still exist at present.

Disclosure of Invention

Aspects of the present application provide a vehicle body floor integrated structure, and a tray structure and a flow channel plate of a battery pack thereof, for solving at least the above-mentioned problems.

The embodiment of the application provides a vehicle body floor integrated structure, which comprises: body beam, battery pack and body floor. The vehicle body Liang Huanrao forms an accommodating space. The battery pack is arranged in the accommodating space and comprises a tray assembly and a battery module assembly arranged on the tray assembly. The vehicle body floor is combined in the accommodating space and covered on the tray assembly. Wherein the body floor has a cavity that accommodates the battery module assembly and is combined with the tray assembly into an outer housing of the battery pack.

In some embodiments, the tray assembly includes a flow field plate and a front end plate. The flow channel plate is internally provided with a plurality of flow channels, and the flow channels form a water inlet and a water outlet on the end face of the flow channel plate. The front end plate is arranged on the end face. The front end plate is provided with a water inlet and a water discharge head which are communicated with the external environment, the water inlet is communicated with the water inlet, and the water discharge head is communicated with the water outlet.

In some embodiments, the front end plate includes a baffle and a bracket. The water inlet head and the water outlet head are arranged on the baffle plate. The support is arranged between the end face and the baffle. The support is internally provided with a diversion guide way and a collection guide way extending along the horizontal direction, wherein the diversion guide way is communicated with the water inlet and the water inlet head, and the collection guide way is communicated with the water outlet and the water discharge head.

In some embodiments, the plurality of flow channels form a plurality of the water inlets on the end face, and a plurality of the water outlets on opposite sides of the plurality of water inlets. The diversion guide way is communicated with a plurality of water inlets, and the flow collection guide way is communicated with a plurality of water outlets.

In some embodiments, the current collecting guide way comprises a first guide section, a current collecting section and a second guide section which are connected. The converging section corresponds to the diverging approach. The first diversion section and the second diversion section are respectively positioned at two opposite sides of the diversion channel.

In some embodiments, the plurality of flow channels form a flow channel layer in the flow channel plate, and a multi-functional interlayer formed by a plurality of hollow structures is further arranged in the flow channel plate. The runner layer is disposed on the multi-functional compartment and is interposed between the battery module assembly and the multi-functional compartment.

In some embodiments, the battery pack further includes a control module assembly disposed between the front end plate and the battery module assembly and electrically connected to the battery module assembly. The control module assembly comprises a high-voltage connector and a low-voltage connector, a first window and a second window are arranged on the front end plate, the high-voltage connector is exposed out of the first window, and the low-voltage connector is exposed out of the second window.

In some embodiments, the body floor is provided with a mating service opening corresponding to the control module assembly and a cover plate removably covering the service opening.

In some embodiments, a side of the bottom surface of the body beam adjacent to the accommodation space is provided with a platform recessed into the bottom surface. The tray assembly comprises a bearing area and an assembling area positioned at the periphery of the bearing area, the bearing area is provided with the battery module assembly, and the assembling area is combined on the platform.

In some embodiments, the platform comprises a first sub-platform and a second sub-platform. The first sub-platform and the second sub-platform have a step therebetween, and the assembly area is coupled to the first sub-platform. The vehicle body floor is covered on one side of the tray assembly, and a bending part is arranged on one side of the vehicle body floor, and is clamped between the second platform and the tray assembly.

The embodiment of the application also provides a tray assembly of the battery pack, which is suitable for being combined with a vehicle body floor to form an outer shell of the battery pack. The tray assembly includes a flow field plate and a front end plate. The flow channel plate is internally provided with a plurality of flow channels, and the flow channels form a water inlet and a water outlet on the end face of the flow channel plate. The front end plate is arranged on the end face. The front end plate is provided with a water inlet and a water discharge head which are communicated with the external environment, the water inlet is communicated with the water inlet, and the water discharge head is communicated with the water outlet.

In some embodiments, the tray assembly further comprises a rear end plate connected to a side of the flow channel plate remote from the front end plate, each of the flow channels comprising a first flow guiding section forming the water inlet on the end face and extending toward the rear end plate, a second flow guiding section connected between the first flow guiding section and the third flow guiding section on a side of the rear end plate, a third flow guiding section extending from the rear end plate toward the front end plate and forming the water outlet on the end face.

The embodiment of the application also provides a runner plate of the tray assembly, which comprises a multi-functional interlayer and a runner layer. The multi-functional interlayer comprises a plurality of hollow structures. The runner layer is arranged on the multi-functional interlayer and is provided with a plurality of runners. The flow channels are provided with a plurality of water inlets and a plurality of water outlets at the front end of the flow channel plate, and the water outlets are respectively positioned at two opposite sides of the water inlets.

In this application embodiment, the tray subassembly with automobile body roof beam, automobile body floor and battery package becomes an entity, has the installation clearance too big between the upper cover of reducing traditional battery package and the automobile body roof beam, leads to the limited problem of electric core arrangement quantity. Meanwhile, in the embodiment of the application, the vehicle body floor is used as the upper cover of the battery pack, so that the vehicle body floor and the tray structure are combined into the outer shell of the battery pack, besides the coating property of the battery module is improved, the configuration of parts can be reduced, more battery cores can be configured in a limited space, and the operation performance of long endurance can be realized on a small vehicle. Meanwhile, the heat management system is integrated on the runner plate of the tray assembly, so that the heat management requirement of the battery system is met. In addition, in some embodiments of the present application, the flow channel plate provides heat insulation and buffering effects at the same time, and besides avoiding damage to the flow channel and the battery pack caused by the bottom of the battery pack, the hollow buffering structure of the flow channel plate can enhance the rigidity of the tray assembly and reduce the weight.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

fig. 1 is a perspective view of a vehicle body floor integrated structure of an embodiment of the present application.

Fig. 2 is a partial cross-sectional view of fig. 1.

Fig. 3 is an exploded view of a body rail and a body floor according to an embodiment of the present application.

Fig. 4 is a perspective view of a battery pack according to an embodiment of the present application.

Fig. 5 is a perspective view of a tray assembly according to an embodiment of the present application.

Fig. 6 is a partially exploded view of a tray assembly according to an embodiment of the present application.

Detailed Description

For the purposes, technical solutions and advantages of the present application, the technical solutions of the present application will be clearly and completely described below with reference to specific embodiments of the present application and corresponding drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.

Please refer to fig. 1 to 4. The embodiment provides a vehicle body floor integrated structure 1, which comprises a vehicle body beam 10, a vehicle body floor 20 and a battery pack 30. The body member 10 includes a front cross member 110, a rear cross member 120, a first longitudinal member 130, and a second longitudinal member 140, wherein the first and second longitudinal members 130, 140 are connected between the front and rear cross members 110, 120 at intervals, and form a receiving space 10a with the front and rear cross members 110, 120. Further, in some embodiments of the present application, the body rail 10 further includes a seat support beam 150 connected between the first side rail 130 and the second side rail 140 so as to span over the accommodating space 10a.

The body floor 20 is integrated on the body rail 10. The body floor 20 includes a top plate 210 and side plates 220, the side plates 220 surrounding the outer periphery of the top plate 210 and forming a cavity with the top plate 210 for receiving some of the components of the battery pack 30. The side plate 220 is bonded to the corresponding wall surface of the accommodating space 10a by bonding, but not limited to, between the vehicle body floor 20 and the vehicle body beam 10, so that the problems of welding stress, welding deformation and welding spot sealing caused by arc welding and resistance welding can be avoided, and the installation gap between the vehicle body floor 20 and the vehicle body beam 10 is reduced. Further, a matched maintenance opening 210a and a cover 211 are provided in the roof panel 210 of the vehicle body floor 20. By the arrangement of the maintenance port 210a, the components provided on the tray assembly 310 of the battery pack 30 can be easily maintained and replaced. And after the cover plate 211 is covered on the maintenance port 210a, a closed environment is formed in the cavity, so that dust and water vapor are isolated from entering, and damage to components is avoided.

The tray assembly 310 of the battery pack 30 includes a flow path plate 311, and a front end plate 312 and a rear end plate 313 disposed at opposite sides of the flow path plate 311. For example, in the length direction x of the flow path plate 311, the rear end plate 313 is connected at one side of the flow path plate 311 by a friction stir welding process or a laser welding process, ensuring sealing and strength; the front end plate 312 is sealed by high temperature resistant adhesive on the other side of the flow channel plate 311, and then the bonding strength is ensured by laser penetration welding.

The flow channel plate 311 of the tray assembly 310 is divided into a carrying area 311a and an assembling area 311b located at the periphery of the carrying area 311 a. The assembly region 311b is configured to be coupled to the bottom of the body rail 10, and is configured to be assembled to the body rail 10 by a fastener such as a screw or a bolt. The carrying area 311a is used for carrying electrical components such as the battery module assembly 320 and/or the control module assembly 330 of the battery pack 30. It should be noted that, in the embodiment of the present application, the battery module assembly 320 may be, but is not limited to, formed by connecting a plurality of battery cells in series-parallel, wherein the mechanical connection structure and the electrical connection structure between the modules of a general battery system are reduced, so that the weight and the cost are reduced. Meanwhile, the operation gap and the safety gap between the multiple modules are removed, the space utilization rate of the battery pack 30 is greatly improved, more electric cores can be arranged to increase the electric quantity, and the endurance of the whole vehicle is improved. The control module assembly 330 is disposed between the front end plate 312 and the battery module assembly 320, and is electrically connected to the battery module assembly 320. The control module assembly 330 integrates both the high voltage connector 331 and the low voltage connector 332 to control the high voltage and low voltage of the battery module assembly 320. Compared with the common independent high-voltage control module, the independent low-voltage control module and the configuration mode of the separated connector, the configuration of the components such as the fasteners and the electric connecting pieces is reduced, the space in the battery pack is optimized, the overall weight is further reduced, and the cost is saved.

Please refer to fig. 3 to fig. 6. One or more flow channels 314 are provided in the flow channel plate 311 of the tray assembly 310 at positions corresponding to the bearing areas 311a, and the flow channels 314 are arranged in the flow channel plate 311 to form a flow channel layer. Wherein each flow channel 314 comprises a first flow guiding segment 3141, a second flow guiding segment 3142 and a third flow guiding segment 3143. The first drainage segment 3141 forms a water inlet 311c on an end surface of the flow passage plate 311 corresponding to the front end plate 312, and extends toward the rear end plate 313. The second flow guiding section 3142 is connected between the first flow guiding section 3141 and the third flow guiding section 3143 in the width direction y of the flow passage plate 311 at a side near the rear end plate 313. The third drain section 3143 extends from a side close to the rear end plate 313 toward the front end plate 312, and water outlets 314b spaced from the water inlet 314a are formed on the end surface of the flow passage plate 311. If the water inlet 314a is divided by the center line of the flow channel plate 311, the water outlet 314b of one part of the flow channels 314 is formed on the right side of the water inlet 314a, the water outlet 314b of the other part of the flow channels 314 is formed on the left side of the water inlet 314a, so that one or more water inlets 314a formed on the end surface of the flow channel plate 311 by the flow channels 314 are distributed at a position close to the middle on the end surface, and a plurality of water outlets 314b are distributed on two opposite sides of the water inlet 314 a. It should be understood that in other embodiments of the present application, the positions of the water inlet 314a and the water outlet 314b of the flow channel 314 may be opposite to the above embodiments, which is not limited to this embodiment.

The front end plate 312 of the tray assembly 310 is provided with a first window 312a, a second window 312b, a water inflow head 3121 and a water outflow head 3122 which communicate with the external environment, and when the front end plate 312 is disposed on the end surface of the flow passage plate 311, the high voltage connector 331 and the low voltage connector 332 of the control module assembly 330 are respectively exposed to the first window 312a and the second window 312b so as to be coupled with an electrical connection line. Meanwhile, the water inlet 3121 of the front end plate 312 communicates with the water inlet 314a, and the water outlet 314b communicates with the water outlet 3122. The water inlet 3121 is used to guide the cooling liquid from the external environment to flow into the flow channel plate 311, for example, to receive the cooling liquid from the cooling system through a pipeline, and to flow into the flow channel plate 311 through the water inlet 314 a. The drain head 3122 is used to guide the cooling liquid in the runner plate 311 to flow out to the external environment, thereby forming a heat exchange circulation mechanism in the runner plate 311.

In the embodiment having a plurality of water inlets 314a and a plurality of water outlets 314b in the present application, the front end plate 312 includes a baffle 3123 and a support 3124 that are combinable with each other. The water inflow head 3121 and the water outflow head 3122 are respectively provided on the baffle 3123, which may be disposed at intervals in a horizontal direction or disposed up and down in a vertical direction. The support 3124 is provided with a diversion channel 3125 and a collection channel 3126, wherein the arrangement direction of the diversion channel 3125 is matched with the arrangement direction of the plurality of water inlets 314a, and the arrangement direction of the collection channel 3126 is matched with the arrangement direction of the plurality of water outlets 314b. In the present embodiment, the diversion channel 3125 extends in the horizontal direction and communicates between the plurality of water inlets 314a and the water inflow head 3121 over a distribution range covering the plurality of water inlets 314 a. Similarly, the collecting channel 3126 extends in the horizontal direction and covers the distribution range of the plurality of water outlets 314b to communicate between the plurality of water outlets 314b and the drain head 3122.

In some embodiments of the present application, the collecting channel 3126 includes a first flow guiding section 31261, a second flow guiding section 31262, and a collecting section 31263 connected. The confluence section 31263 is connected to the drainage head 3121 and corresponds to the diversion channel 3125, and may be disposed above or below the diversion channel 3125. The first deflector segment 31261 and the second deflector segment 31262 are located on opposite sides of the shunt guide 3125, respectively. Therefore, when the cooling liquid flows into the diversion channel 3125 of the support 3124 from the water inlet 3121 of the front end plate 312, the cooling liquid may be guided by the diversion channel 3125 to flow into the flow channel plate 311 from the water inlet 314a of each flow channel 314 and flow into the flow channel plate 311 along the distribution direction of the flow channels 314, and then flow out into the collection channel 3126 of the support 3124 from the water outlet 314b, at this time, the cooling liquid is guided by the first diversion section 31261 and the second diversion section 31262 to be concentrated toward the collection section 31263, and flows out of the tray assembly 310 through the water discharge head 3122 at the collection section 31263.

Therefore, when the flow channel plate 311 of the tray assembly 310 is provided with electrical components such as the battery module assembly 320 and/or the control module assembly 330, the heat energy generated during the operation of the electrical components can be taken away by the cooling liquid flowing in the flow channel 314, so as to achieve the effects of heat dissipation and temperature reduction.

Please refer to fig. 6. In some embodiments of the present application, a multi-functional interlayer is further disposed under the flow channel layer of the flow channel plate 311, which may be, but not limited to, formed by arranging a plurality of hollow structures 315 along the width direction y of the flow channel plate 311 and extending along the length direction x of the flow channel plate 311, so as to play a role of a reinforcing rib and strengthen the structural strength of the flow channel plate 311. In addition, the hollow structures 315 can isolate heat energy of the external environment from being transferred into the battery pack 30, so as to play a role in heat insulation. At the same time, the buffer effect can be provided to avoid the damage to the flow channel caused by the supporting of the battery pack 30.

Thus, in the embodiment of the present application, the runner plate 311 may be, but is not limited to, an aluminum extrusion structure, where the upper layer structure is a runner layer, and the lower layer structure is a multi-functional interlayer with heat insulation and buffering functions. When the electrical component is arranged on the runner plate 311, the runner layer is arranged between the electrical component and the multi-functional interlayer, so that the heat dissipation and cooling effects can be provided by the runner layer, the thermal management requirement of the battery system can be met, the heat insulation and buffering effects can be provided by the multi-functional interlayer, and the rigidity of the tray component can be enhanced and the weight can be reduced by virtue of the cavity structure of the heat insulation and buffering effects.

Please refer to fig. 1 to 6. In an application scenario of the embodiment of the present application, the battery module assembly 320 and the control module assembly 330 may be assembled and disassembled on the tray assembly 310 of the battery pack 30. After the battery module assembly 320 and the control module assembly 330 are disposed in the bearing area 311a of the flow channel plate 311, the vehicle body floor 20 is covered on the flow channel plate 311 of the tray assembly 310, so that the vehicle body floor 20 and the tray assembly 310 are combined into the outer shell of the battery pack 30. The side plate 220 of the vehicle body floor 20 corresponding to the front end plate 312 of the tray assembly 310 is provided with an opening 220a, the structural form of the opening 220a is matched with the appearance structure of the front end plate 312, and when the vehicle body floor 20 is covered on the runner plate 311, the front end plate 312 of the tray assembly 310 is embedded in the opening 220a so as to improve the adhesion when the two are mutually combined. At this time, the assembly regions 311b located at opposite sides of the flow channel plate 311 are exposed at the surface of the flow channel plate 311. Therefore, the battery pack 30 together with the vehicle body floor 20 can be integrated into the accommodation space 10a of the vehicle body beam 10 by being bonded to the bottom of the vehicle body beam 10 through the assembly region 311b of the flow path plate 311.

It will be appreciated that in the operation of integrating the body floor 20 and the battery pack 30 into the body beam 10, the body floor 20 may be bonded into the receiving space 10a of the body beam 10 by means of adhesive bonding, and then the runner plate 311 is fastened to the bottom of the body beam 10 by means of fasteners, thereby completing the operation of integrating the battery pack 30 with the body floor 20 and the body beam 10, respectively. Alternatively, the vehicle body floor 20 is first covered on the runner plate 311 of the tray assembly 310, and then the runner plate 311 is locked to the bottom of the vehicle body beam 10, thereby completing the assembly operation of the vehicle body floor integrated structure 1.

Please refer to fig. 2 to fig. 4. In some embodiments of the present application, a platform 160 recessed into the bottom surface is provided at a side of the bottom of the body beam 10 near the accommodating space 10a, and the position and structure of the platform 160 corresponds to the assembly region 311b of the flow channel plate 311. That is, the platform 160 is provided at both opposite sides of the bottom of the body member 10, and the recessed depth of the platform 160 is matched with the thickness of the assembly region 311b of the flow channel plate 311, for example, greater than or equal to the thickness of the assembly region 311b. Therefore, when the assembly area 311b of the runner plate 311 is correspondingly locked to the platform 160 by the fastener, the bottom surface of the runner plate 311 and the bottom surface of the body beam 10 are flush or slightly submerged in the bottom surface of the body beam 10, so as to be smooth in appearance and convenient for application in other spaces in the body.

Further, in other embodiments of the present application, the platform 160 at the bottom of the body rail 10 further includes a first sub-platform 161 and a second sub-platform 162, and a bent portion 221 extending in a bent manner is provided at a side of the side plate 220 of the body floor 20 that contacts the flow path plate 311. Wherein, the concave depth of the second sub-platform 162 at the bottom of the body beam 10 is greater than the concave depth of the first sub-platform 161, so that a step is formed between the first sub-platform 161 and the second sub-platform 162. And, the recessed depth of the first sub-stage 161 is matched with the thickness of the assembly region 311b of the flow passage plate 311, and the step difference between the second sub-stage 162 and the first sub-stage is matched with the thickness of the bent portion 221 of the vehicle body floor 20.

Therefore, when the tray assembly 310 is coupled to the first sub-platform 161 at the bottom of the body beam 10 through the assembly region 311b of the runner plate 311, the body floor 20 is covered on the runner plate 311 of the tray assembly 310, and the folded portion 221 of the side plate 220 thereof is abutted against the surface of the runner plate 311 and clamped and fixed between the assembly region 311b and the second sub-platform 162, so that the combination of the battery pack 30, the body floor 20 and the body beam 10 is more fastened. It can be appreciated that in this embodiment, a sealing member 230 such as a sealing strip or a sealing ring may be further disposed between the inflection portion 221 of the side plate 220 and the surface of the flow channel plate 311, so as to prevent dust or water vapor from entering the cavity formed by the vehicle body floor 20 from the contact position therebetween, thereby providing dust-proof and waterproof protection for the electrical components such as the battery module assembly 320 and the control module assembly 330 contained therein.

The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

Claims

1. A vehicle body floor integrated structure, characterized by comprising:

a body beam surrounding the body beam to form a receiving space;

the battery pack is arranged in the accommodating space and comprises a tray assembly and a battery module assembly arranged on the tray assembly; and

and a body floor coupled in the receiving space and covering the tray assembly, wherein the body floor has a cavity accommodating the battery module assembly and is coupled with the tray assembly to form an outer case of the battery pack.

2. The vehicle body floor integrated structure of claim 1, wherein the tray assembly comprises:

the flow channel plate is internally provided with a plurality of flow channels, and the flow channels form a water inlet and a water outlet on the end face of the flow channel plate; and

the front end plate is arranged on the end face and is provided with a water inlet head and a water discharge head which are communicated with the external environment, the water inlet head is communicated with the water inlet, and the water discharge head is communicated with the water outlet.

3. The vehicle body floor integrated structure according to claim 2, wherein the front end plate includes:

the water inlet head and the water outlet head are arranged on the baffle; and

the support is arranged between the end face and the baffle, and a diversion guide way and a collection guide way extending along the horizontal direction are arranged in the support, wherein the diversion guide way is communicated with the water inlet and the water inlet, and the collection guide way is communicated with the water outlet and the drainage head.

4. The vehicle body floor integrated structure according to claim 3, wherein the plurality of flow passages form a plurality of the water inlets on the end face, and a plurality of the water outlets are formed on opposite sides of the plurality of the water inlets, the diversion passage communicates with the plurality of the water inlets, and the collection passage communicates with the plurality of the water outlets.

5. The vehicle body floor integrated architecture of claim 4, wherein the current collecting channel comprises a first current guiding section, a current converging section and a second current guiding section connected, the current converging section corresponding to the current dividing channel, the first current guiding section and the second current guiding section being located on opposite sides of the current dividing channel, respectively.

6. The vehicle body floor integrated structure of claim 2, wherein the plurality of flow channels form a flow channel layer in the flow channel plate, and a multi-functional barrier layer formed by a plurality of hollow structures is further provided in the flow channel plate, and the flow channel layer is disposed on the multi-functional barrier layer and between the battery module assembly and the multi-functional barrier layer.

7. The vehicle body floor integrated architecture of claim 2, wherein the battery pack further comprises a control module assembly disposed between the front end plate and the battery module assembly and electrically connected to the battery module assembly, wherein the control module assembly comprises a high voltage connector and a low voltage connector, and wherein the front end plate is provided with a first window and a second window, the high voltage connector is exposed to the first window, and the low voltage connector is exposed to the second window.

8. The vehicle body floor integrated architecture of claim 7, wherein the vehicle body floor is provided with mating service openings corresponding to the control module assembly and a cover plate removably covering the service openings.

9. The vehicle body floor integrated structure of claim 1, wherein a side of the bottom surface of the vehicle body beam adjacent to the receiving space is provided with a platform recessed into the bottom surface, the tray assembly includes a carrying area provided with the battery module assembly, and an assembly area located at a periphery of the carrying area, the assembly area being coupled to the platform.

10. The vehicle body floor integrated structure of claim 9, wherein the platform comprises a first sub-platform and a second sub-platform, wherein the first sub-platform and the second sub-platform have a step therebetween, wherein the assembly area is coupled to the first sub-platform, wherein a side of the vehicle body floor that is covered by the tray assembly is provided with a bent portion that is sandwiched between the second sub-platform and the tray assembly.

11. A tray assembly for a battery pack adapted to be combined with a vehicle body floor to form an outer housing for the battery pack, the tray assembly comprising:

12. The tray assembly of claim 11, wherein the front end plate comprises:

the water inlet head and the water outlet head are arranged on the baffle; and

13. The tray assembly of claim 12, wherein the plurality of flow channels form a plurality of the water inlets on the end surface and a plurality of the water outlets on opposite sides of the plurality of water inlets, the shunt channels communicate with the plurality of water inlets, and the collection channels communicate with the plurality of water outlets.

14. The tray assembly of claim 13, wherein the manifold comprises a first flow guide section, a converging section, and a second flow guide section connected, the converging section corresponding to the manifold, the first flow guide section and the second flow guide section being located on opposite sides of the manifold, respectively.

15. The tray assembly of claim 11, wherein the plurality of flow channels form a flow channel layer in the flow channel plate, and wherein a multi-functional barrier layer comprising a plurality of hollowed-out structures is further disposed in the flow channel plate, the flow channel layer being disposed on the multi-functional barrier layer.

16. The tray assembly of claim 11, wherein the control module assembly of the battery pack is provided with a high voltage connector and a low voltage connector, and the front end plate is provided with a first window for exposing the high voltage connector and a second window for exposing the low voltage connector.

17. The tray assembly of claim 11, further comprising a rear end plate connected to a side of the flow channel plate remote from the front end plate, each of the flow channels including a first flow-directing segment forming the water inlet on the end face and extending toward the rear end plate, a second flow-directing segment connected between the first flow-directing segment and the third flow-directing segment on a side of the rear end plate, and a third flow-directing segment extending from the rear end plate toward the front end plate and forming the water outlet on the end face.

18. A runner plate for a tray assembly, comprising:

the multi-functional interlayer comprises a plurality of hollow structures; and

the runner layer is arranged on the multi-functional interlayer and is provided with a plurality of runners, the runners are provided with a plurality of water inlets and a plurality of water outlets at the front ends of the runner plates, and the water outlets are respectively positioned at two opposite sides of the water inlets.

19. The flow conduit plate of claim 18 wherein each of said flow conduits includes a first flow conduit section forming said water inlet at said front end and extending toward a rear end of said flow conduit plate, a second flow conduit section connected between said first flow conduit section and said third flow conduit section on one side of said rear end, and a third flow conduit section extending from said rear end toward said front end and forming said water outlet at said front end.