Battery pack and vehicle body integrated structure and vehicle

Abstract

The application provides a battery pack and vehicle body integrated structure and a vehicle, and relates to the technical field of power batteries.The battery pack and vehicle body integrated structure comprises a bottom guard plate, a vehicle body main body and a battery module.The vehicle body main body has an enclosing part, the enclosing part is connected with the bottom guard plate, the bottom guard plate, the enclosing part and part of the vehicle body main body form an installation cavity, and the battery module is arranged in the installation cavity.In this way, the enclosing part is equivalent to the side frame of the battery pack, and the vehicle body main body is equivalent to the upper cover of the battery pack, so that the upper cover and the side frame of the battery pack can be cancelled, the weight of the battery pack is reduced, the connection between the battery pack and the vehicle body main body is more compact, and the integration of the battery pack and the vehicle body main body is improved.

Description

Technical Field

[0001] This application relates to the field of power battery technology, and in particular to a battery pack integrated structure with a vehicle body and a vehicle. Background Technology

[0002] The battery pack is one of the core components of new energy vehicles, directly affecting their driving range and performance.

[0003] In related technologies, a battery pack typically includes a bottom protective plate, side frames, a top cover, and battery modules. The bottom protective plate, side frames, and top cover form a mounting cavity, within which the battery modules are housed. The battery pack is installed on the body of a new energy vehicle, and the battery modules store and release electrical energy to power the vehicle.

[0004] However, the battery pack is installed independently of the vehicle body, and the side frame, top cover, etc. will take up extra space on the vehicle body, resulting in a low degree of integration of the whole vehicle. Utility Model Content

[0005] This application provides a battery pack and vehicle body integration structure and vehicle to solve the problem that the battery pack and vehicle body are installed independently and the overall vehicle integration is low.

[0006] In a first aspect, the battery pack and vehicle body integration structure provided in the embodiments of this application includes:

[0007] Bottom guard plate;

[0008] The body body has a enclosure section, which is connected to the bottom guard plate. The bottom guard plate, the enclosure section, and part of the body body form an installation cavity.

[0009] The battery module is installed inside the mounting cavity.

[0010] In one possible implementation, the battery pack integrated with the vehicle body structure provided in this application embodiment has at least one crossbeam on the side of the bottom guard plate facing the main body of the vehicle body, and the crossbeam and the bottom guard plate surround to form multiple mounting positions.

[0011] The battery module includes multiple cell groups, which are located in the mounting position.

[0012] In one possible implementation, the battery pack integrated with the vehicle body structure provided in this application embodiment has at least one second connector on the crossbeam, and the second connector is connected to the main body of the vehicle body.

[0013] In one possible implementation, the battery pack and vehicle body integration structure provided in this application embodiment further includes a liquid cooling plate, which is disposed between the bottom guard plate and the battery module.

[0014] The crossbeam is mounted on the liquid cooling plate.

[0015] In one possible implementation, the battery pack integrated with the vehicle body structure provided in this application embodiment includes an electrical unit that is electrically connected to the cell assembly and is disposed on the cell assembly.

[0016] The vehicle body has a clearance protrusion, and the electrical unit is installed in a corresponding manner to the clearance protrusion.

[0017] In one possible implementation, the battery pack integrated with the vehicle body structure provided in this application embodiment has an access door provided on the protrusion.

[0018] In one possible implementation, the battery pack integrated with the vehicle body structure provided in this application embodiment has a mounting base on the battery cell assembly and an electrical unit mounted on the mounting base.

[0019] In one possible implementation, the battery pack integrated with the vehicle body structure provided in this application embodiment has at least one sill beam on the main body of the vehicle body, and the sill beam abuts against the periphery of the enclosure.

[0020] In one possible implementation, the battery pack and vehicle body integration structure provided in this application embodiment further includes at least one first connector;

[0021] The threshold beam is provided with at least one first connecting hole, the enclosure part is provided with at least one second connecting hole, and the bottom guard plate is provided with at least one third connecting hole. The first connecting member connects the threshold beam, the enclosure part and the bottom guard plate in sequence through the first connecting hole, the second connecting hole and the third connecting hole.

[0022] Secondly, the vehicle provided in the embodiments of this application includes any of the aforementioned battery pack and vehicle body integrated structures.

[0023] This utility model provides a battery pack integrated structure with a vehicle body and a vehicle. The battery pack integrated structure includes a floor guard plate, a vehicle body, and a battery module. The vehicle body has a retaining section connected to the floor guard plate. The floor guard plate, retaining section, and part of the vehicle body form a mounting cavity, in which the battery module is disposed. Thus, the retaining section acts as the side frame of the battery pack, and the vehicle body acts as the top cover of the battery pack. This eliminates the need for a top cover and side frame, reducing the weight of the battery pack and allowing for a more compact connection between the battery pack and the vehicle body, thereby improving the integration of the battery pack and the vehicle body. Attached Figure Description

[0024] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0025] Figure 1This is a schematic diagram of the battery pack and vehicle body integration structure provided in the embodiments of this application;

[0026] Figure 2 for Figure 1 Exploded view of the battery pack integrated with the vehicle body structure;

[0027] Figure 3 for Figure 2 A partial structural diagram of the battery pack integrated with the vehicle body;

[0028] Figure 4 for Figure 1 A structural diagram of the battery module and bottom protective plate in the middle;

[0029] Figure 5 for Figure 1 A cross-sectional view of the battery pack integrated with the vehicle body structure (AA section).

[0030] Figure 6 for Figure 1 A BB cross-sectional view of the battery pack integrated with the vehicle body structure.

[0031] Explanation of reference numerals in the attached figures:

[0032] 100. Bottom guard plate; 101. Mounting cavity; 102. Mounting position; 110. Third connecting hole; 120. Crossbeam; 121. Second connecting piece; 130. Sealing element;

[0033] 200. Vehicle body; 210. Enclosure section; 211. Second connecting hole; 220. Clearance protrusion; 221. Inspection door;

[0034] 300. Battery module; 310. Cell assembly; 311. Pressure plate; 320. Electrical unit; 321. Mounting bracket; 330. Connector;

[0035] 400, door sill beam; 410, first connecting hole;

[0036] 500. First connector;

[0037] 600. Liquid cooling plate; 610. Connecting part;

[0038] 700. Seat Installation Department.

[0039] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0040] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0041] The terms “first,” “second,” “third,” and “fourth,” etc. (if present), in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] As described in the background section, a battery pack typically includes a bottom protective plate, side frames, a top cover, and battery modules. The bottom protective plate, side frames, and top cover form a sealed mounting cavity, within which the battery modules are housed. The battery pack is mounted on the body of a new energy vehicle, and the battery modules store and release electrical energy to power the vehicle.

[0043] However, the battery pack is installed independently of the vehicle body, and the side frame, top cover, etc. will take up extra space on the vehicle body, resulting in a low degree of integration of the whole vehicle.

[0044] To address the aforementioned problems in the existing technology, this utility model provides a battery pack integrated structure with the vehicle body and a vehicle. The battery pack integrated structure includes a floor guard plate, a vehicle body, and a battery module. The vehicle body has a retaining section connected to the floor guard plate. The floor guard plate, retaining section, and part of the vehicle body form a mounting cavity, within which the battery module is disposed. In this way, the retaining section acts as the side frame of the battery pack, and the vehicle body acts as the top cover of the battery pack. This eliminates the need for a top cover and side frame, reducing the weight of the battery pack and allowing for a more compact connection between the battery pack and the vehicle body, thus improving the integration of the battery pack and the vehicle body.

[0045] The following describes exemplary application scenarios of this utility model.

[0046] The battery pack and vehicle body integration structure provided by this utility model can be applied to new energy vehicles, such as pure electric vehicles and plug-in hybrid vehicles. Specifically, the battery pack and vehicle body integration structure provided by this utility model can eliminate the top cover and side frame of the battery pack, reduce the weight of the battery pack, make the connection between the battery pack and the vehicle body more compact, improve the integration degree of the battery pack and the vehicle body, and improve the overall space utilization rate.

[0047] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0048] Reference Figure 1 and Figure 2 As shown in the embodiment of this application, the battery pack and vehicle body integrated structure includes a bottom guard plate 100, a vehicle body 200, and a battery module 300.

[0049] The vehicle body 200 has a enclosure 210, which is connected to the bottom guard plate 100. The bottom guard plate 100, the enclosure 210 and part of the vehicle body 200 form an installation cavity 101, and the battery module 300 is disposed in the installation cavity 101.

[0050] It is understandable that the body body 200 can be the chassis structure of the vehicle. The body body 200 has a retaining section 210, which is connected to the retaining section 210 through the bottom guard plate 100. The bottom guard plate 100, the retaining section 210 and part of the body body 200 together form a mounting cavity 101 for the installation of the battery module 300.

[0051] In this configuration, the enclosure 210 is equivalent to the side frame of the battery pack, and the vehicle body 200 is equivalent to the top cover of the battery pack. This eliminates the need for the top cover and side frame of the battery pack, reduces the weight of the battery pack, allows for a more compact connection between the battery pack and the vehicle body 200, improves the integration of the battery pack and the vehicle body 200, and increases the overall space utilization.

[0052] Reference Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, at least one crossbeam 120 is provided on the side of the underbody 100 facing the vehicle body 200, and the crossbeam 120 and the underbody 100 surround each other to form a plurality of mounting positions 102.

[0053] The battery module 300 includes multiple cell groups 310, which are disposed within the mounting position 102.

[0054] In the above embodiment, a crossbeam 120 is provided on the bottom protective plate 100. The crossbeam 120 can provide additional support points, effectively dispersing pressure and load from the outside, thereby improving the stability of the structure.

[0055] In this battery module 300, multiple cell groups 310 can be installed one-to-one into the mounting positions 102 formed by the crossbeam 120 and the bottom protective plate 100. The crossbeam 120 separates the cell groups 310 to avoid mutual interference. Multiple cell groups 310 can be connected in series or in parallel through connecting bars (such as copper bars, aluminum bars, etc.).

[0056] It is understood that at least one crossbeam 120 is used, and the number of crossbeams 120 can be one to form two mounting positions 102. The number of crossbeams 120 can be two to form three or four mounting positions 102. Of course, the number of crossbeams 120 can also be more than two, and the embodiments of this application do not impose too many restrictions on this.

[0057] Specifically, refer to Figure 2 and Figure 4 As shown, there are five crossbeams 120, arranged in a three-horizontal-two-vertical configuration to form six mounting positions 102 for installing six battery cell groups 310.

[0058] Reference Figure 2 and Figure 4 As shown, in some embodiments, at least one second connector 121 is provided on the crossbeam 120, and the second connector 121 is connected to the vehicle body 200.

[0059] In the above embodiment, the crossbeam 120 is connected to the vehicle body 200 through the second connector 121, so as to achieve a tighter connection between the battery pack and the vehicle body 200, thereby improving the strength of the overall structure.

[0060] For example, refer to Figure 4 As shown, four second connectors 121 can be spaced apart on each crossbeam 120, and a total of 20 second connectors 121 are used to achieve a tight connection between the battery pack and the vehicle body 200.

[0061] For example, the second connector 121 can be a fastening structure such as a bolt or rivet nut, and the embodiments of this application do not impose too many restrictions on it.

[0062] Reference Figure 2 , Figure 5 and Figure 6 As shown, in some embodiments, the battery pack and vehicle body integration structure provided in this application embodiment further includes a liquid cooling plate 600, which is disposed between the bottom guard plate 100 and the battery module 300, and the crossbeam 120 is disposed on the liquid cooling plate 600.

[0063] Each cell assembly 310 can be bonded to the liquid cooling plate 600.

[0064] In the above implementation, the liquid cooling plate 600 can be connected to an external liquid cooling device. The liquid cooling device supplies refrigerant to the liquid cooling plate 600. The refrigerant flows inside the liquid cooling plate 600 and carries away the heat generated by the cell assembly 310, thereby dissipating heat and cooling the battery module 300. Then the refrigerant flows back into the liquid cooling device.

[0065] Reference Figure 4 and Figure 5 As shown, a first opening can be provided on the enclosure 210, and the liquid cooling plate 600 has a connecting part 610. The liquid inlet and liquid outlet of the liquid cooling plate 600 are both located on the connecting part 610. The connecting part 610 is arranged on the outside of the mounting cavity 101 through the first opening, which makes it convenient for the liquid inlet and liquid outlet of the liquid cooling plate 600 to be connected with the liquid cooling device.

[0066] Among them, the bottom protective plate 100, the liquid cooling plate 600 and the crossbeam 120 can all be formed by welding aluminum profiles with a thickness of 7mm to 13mm to improve the overall strength.

[0067] Reference Figure 4 As shown, in some embodiments, the battery pack integrated structure with the vehicle body also includes at least one pressure plate 311, which is bonded between multiple cell groups 310.

[0068] In the above embodiment, the pressure plate 311 is used to improve the stability of the installation of each battery cell assembly 310, so that the battery cell assembly 310 is fixed in the mounting cavity 101 formed by the crossbeam 120 and the bottom guard plate 100, and the battery cell assembly 310 is prevented from shifting or loosening during vehicle operation.

[0069] Understandably, there is at least one pressure plate 311, and the number of pressure plates 311 can be one, with the pressure plate 311 covering all the cell groups 310. The number of pressure plates 311 can also be two or more, with each pressure plate 311 bonded between two or more cell groups 310 to reduce costs.

[0070] Specifically, refer to Figure 4 As shown, there can be three pressure plates 311, which are spaced apart, and each pressure plate 311 is bonded to the two battery cells 310 along the length of the battery cell group 310.

[0071] Reference Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, the battery module 300 includes an electrical unit 320, which is electrically connected to the cell assembly 310 and disposed on the cell assembly 310.

[0072] The main body 200 is provided with a clearance protrusion 220, and the electrical unit 320 is provided in correspondence with the clearance protrusion 220.

[0073] The electrical unit 320 may include a BDU (Battery Disconnect Unit) and a BMS (Battery Management System).

[0074] In the above embodiments, the electrical unit 320 can monitor the voltage, temperature, charging and discharging status and other information of the battery cell assembly 310 in real time to ensure that the battery cell assembly 310 operates within a safe range.

[0075] Reference Figure 2 and Figure 5 As shown, the electrical unit 320 is mounted on the battery cell assembly 310 and is located inside the clearance protrusion 220. This makes the overall structure more compact and improves space utilization.

[0076] Reference Figure 1 , Figure 2 and Figure 5 As shown, the battery module 300 also includes a connector 330, which is electrically connected to the electrical unit 320 and is used for electrical connection with external electronic devices.

[0077] The enclosure 210 may have a second opening, through which the connector 330 is arranged on the outside of the mounting cavity 101, so that the connector 330 can be easily connected to external electronic devices.

[0078] Reference Figure 1 and Figure 2 As shown, in some embodiments, an access door 221 is provided on the clearance protrusion 220.

[0079] In the above embodiment, when the electrical unit 320 malfunctions, it can be repaired directly through the inspection door 221. This eliminates the need to remove the entire battery module 300 from the vehicle for repair, improving maintenance efficiency.

[0080] Reference Figure 2 , Figure 4 and Figure 5 As shown, in some embodiments, a mounting base 321 is provided on the battery cell assembly 310, and an electrical unit 320 is disposed on the mounting base 321.

[0081] In the above implementation, the mounting base 321 is mainly used for the installation of the electrical unit 320, and can also separate the electrical unit 320 from the battery pack 310 to avoid direct contact between the two and interference.

[0082] Reference Figure 1 and Figure 2 As shown, at least one sill beam 400 is provided on the main body 200, and the sill beam 400 abuts against the periphery of the enclosure 210.

[0083] In the above embodiment, the threshold beam 400 abuts against the periphery of the enclosure portion 210, and the threshold beam 400 provides additional support for the enclosure portion 210 to reduce the deformation of the enclosure portion 210, thereby improving the stability of the overall structure.

[0084] Specifically, refer to Figure 1 and Figure 2 As shown, the battery pack integrated structure with the vehicle body may include two sill beams 400 on the left and right sides. The two sill beams 400 are located on opposite sides of the enclosure 210, and the two sill beams 400 together provide additional support for the enclosure 210 to reduce the deformation of the enclosure 210.

[0085] Reference Figure 1 and Figure 2 As shown, in some embodiments, the battery pack integrated with the vehicle body structure also has a seat mounting part 700, which is disposed on the vehicle body 200 and connected to the sill beam 400. The seat mounting part 700 can be used to install the vehicle seat.

[0086] The seat mounting section 700 and the battery module 300 are positioned in the Z-direction, so the body body 200 acts as the top cover of the battery pack. This eliminates the need for a separate top cover for the battery pack, allowing for an additional increase in the Z-direction space of the passenger compartment without altering the shape of the vehicle, thereby improving passenger comfort.

[0087] Reference Figure 2 and Figure 3 As shown in the embodiment of this application, the battery pack and vehicle body integration structure also includes at least one first connector 500.

[0088] The threshold beam 400 is provided with at least one first connecting hole 410, the enclosure part 210 is provided with at least one second connecting hole 211, and the bottom guard plate 100 is provided with at least one third connecting hole 110. The first connecting member 500 connects the threshold beam 400, the enclosure part 210 and the bottom guard plate 100 in sequence through the first connecting hole 410, the second connecting hole 211 and the third connecting hole 110.

[0089] In the above embodiment, by setting the first connector 500, the enclosure part 210 and the bottom guard plate 100 can be detachably connected. This allows the bottom guard plate 100 to be removed from the vehicle body 200 separately, so as to facilitate the operation and maintenance of the battery module 300 on the bottom guard plate 100.

[0090] Furthermore, the first connector 500 connects the sill beam 400, the enclosure 210, and the bottom guard plate 100 together, thereby providing additional support through the sill beam 400 and improving the stability of the overall structure.

[0091] The device includes at least one first connector 500, and the number of first connectors 500 can be one. Alternatively, there can be multiple first connectors 500 spaced apart around the periphery of the bottom protective plate 100. This application embodiment does not impose further limitations in this regard.

[0092] It is understandable that the number of the first connecting hole 410, the number of the second connecting hole 211, and the number of the third connecting hole 110 should correspond to the number of the first connector 500.

[0093] For example, the first connector 500 can be a fastening structure such as a bolt or rivet nut, and the embodiments of this application do not impose too many restrictions on it.

[0094] Reference Figure 2 and Figure 3 As shown, in some embodiments, a sealing element 130 is provided between the enclosure portion 210 and the bottom protective plate 100.

[0095] In the above embodiment, by providing a sealing element 130 between the enclosure 210 and the bottom protective plate 100 to fill the gap between the enclosure 210 and the bottom protective plate 100, dust, liquids and other substances are prevented from entering the mounting cavity 101 and damaging the battery module 300.

[0096] For example, the seal 130 can be a silicone gasket, a rubber gasket, a sealant, etc., and the embodiments of this application do not impose too many restrictions on it.

[0097] The vehicle provided in this application embodiment includes the battery pack and body integrated structure as described above.

[0098] In the above structural configuration, since the vehicle adopts the battery pack and body integration structure in the above embodiment, it also has the advantages and benefits brought by the battery pack and body integration structure, which will not be elaborated further here.

[0099] Other embodiments of this application will readily occur to those skilled in the art upon consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this application are indicated by the following claims.

[0100] It should be understood that this application is not limited to the precise structure described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this application is limited only by the appended claims.

Claims

1. A battery pack integrated with a vehicle body structure, characterized in that, include: Bottom guard plate (100); The vehicle body (200) has a enclosure (210) connected to the bottom guard plate (100), and the bottom guard plate (100), the enclosure (210) and part of the vehicle body (200) form an installation cavity (101). A battery module (300) is disposed within the mounting cavity (101).

2. The battery pack and vehicle body integration structure according to claim 1, characterized in that, The bottom guard plate (100) is provided with at least one crossbeam (120) on the side facing the vehicle body (200), and the crossbeam (120) and the bottom guard plate (100) surround each other to form a plurality of mounting positions (102). The battery module (300) includes multiple cell groups (310), which are disposed within the mounting position (102).

3. The battery pack and vehicle body integration structure according to claim 2, characterized in that, At least one second connector (121) is provided on the crossbeam (120), and the second connector (121) is connected to the vehicle body (200).

4. The battery pack and vehicle body integration structure according to claim 3, characterized in that, It also includes a liquid cooling plate (600), which is disposed between the bottom protective plate (100) and the battery module (300); The crossbeam (120) is mounted on the liquid cooling plate (600).

5. The battery pack integrated structure with the vehicle body according to any one of claims 2 to 4, characterized in that, The battery module (300) includes an electrical unit (320), which is electrically connected to the cell assembly (310) and is disposed on the cell assembly (310); The vehicle body (200) is provided with a clearance protrusion (220), and the electrical unit (320) is provided correspondingly to the clearance protrusion (220).

6. The battery pack and vehicle body integration structure according to claim 5, characterized in that, An inspection door (221) is provided on the avoidance protrusion (220).

7. The battery pack and vehicle body integration structure according to claim 5, characterized in that, The battery cell assembly (310) is provided with a mounting base (321), and the electrical unit (320) is disposed on the mounting base (321).

8. The battery pack integrated structure with the vehicle body according to any one of claims 1 to 4, characterized in that, At least one sill beam (400) is provided on the vehicle body (200), and the sill beam (400) abuts against the periphery of the enclosure (210).

9. The battery pack and vehicle body integration structure according to claim 8, characterized in that, It also includes at least one first connector (500); The threshold beam (400) is provided with at least one first connecting hole (410), the enclosure part (210) is provided with at least one second connecting hole (211), and the bottom guard plate (100) is provided with at least one third connecting hole (110). The first connector (500) connects the threshold beam (400), the enclosure part (210), and the bottom guard plate (100) in sequence through the first connecting hole (410), the second connecting hole (211), and the third connecting hole (110).

10. A vehicle, characterized in that, Includes a battery pack integrated with the vehicle body structure as described in any one of claims 1 to 9.

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