CN217281066U

CN217281066U - Power battery pack device and electric vehicle

Info

Publication number: CN217281066U
Application number: CN202221127811.4U
Authority: CN
Inventors: 黄红光; 文刚; 李德壮; 杨威
Original assignee: GAC Aion New Energy Automobile Co Ltd
Current assignee: GAC Aion New Energy Automobile Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-23
Anticipated expiration: 2032-05-11

Abstract

The embodiment of the application provides a power battery pack device and an electric vehicle, and relates to the technical field of batteries. The power battery pack device comprises a shell assembly, a BMS assembly, a wire harness and a battery assembly; the shell assembly comprises an upper shell and a lower shell, the upper shell and the lower shell are installed in a matching mode, and the upper shell is a convex upper shell; the BMS assembly comprises a BMS board and a BMS bracket, the wiring harness and the BMS board are respectively installed on the BMS bracket, and the wiring harness, the BMS board and the BMS bracket are arranged in the convex space of the upper shell; the battery pack includes a plurality of battery modules mounted side by side between the BMS bracket and the lower case. The power battery pack device can achieve the technical effect of improving the space utilization rate of the battery pack.

Description

Power battery pack device and electric vehicle

Technical Field

The application relates to the technical field of batteries, in particular to a power battery pack device and an electric vehicle.

Background

At present, a new energy automobile refers to an automobile which adopts unconventional automobile fuel as a power source (or adopts conventional automobile fuel and a novel vehicle-mounted power device), integrates advanced technologies in the aspects of power control and driving of the automobile, and has advanced technical principle, new technology and new structure. One of the new energy vehicles adopts a power battery, and the key of the power of the new energy vehicle is the electric quantity of the power battery. The space of the battery pack can be made of earth and gold, and a battery manufacturer and a host computer manufacturer desire to assemble batteries with more electric quantity in limited space. The Battery pack contains a Battery Management System (BMS) board and a wire harness, which are the main components occupying space. At present, the BMS board is mainly fixed to the lower plate of the battery pack at the same side as the fixing surface of the battery module. Among the prior art, the battery package horizontal space is taken up to current BMS arrangement mode, makes space utilization be difficult to obtain fine promotion.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide a power battery package device and an electric vehicle, can realize promoting the technical effect of the space utilization of battery package.

In a first aspect, an embodiment of the present application provides a power battery pack device, including a housing assembly, a BMS assembly, a wire harness, and a battery assembly;

the shell assembly comprises an upper shell and a lower shell, the upper shell and the lower shell are installed in a matching mode, and the upper shell is a convex upper shell;

the BMS assembly comprises a BMS board and a BMS bracket, the wiring harness and the BMS board are respectively installed on the BMS bracket, and the wiring harness, the BMS board and the BMS bracket are arranged in the convex space of the upper shell;

the battery pack includes a plurality of battery modules mounted side by side between the BMS bracket and the lower case.

In the implementation process, the upper shell is arranged to be convex, and the convex space is formed in the upper shell, so that the BMS plate, the BMS bracket and the wiring harness can be integrally placed and installed in the upper shell, the BMS plate and the wiring harness can be installed on the BMS bracket, the vertical Z-direction space is fully utilized, and the space utilization rate of the battery pack is improved; therefore, the power battery pack device can achieve the technical effect of improving the space utilization rate of the battery pack.

Further, the BMS support is provided with a plurality of installation stabilizer blades, the battery module is provided with the installation end plate, every the installation stabilizer blade with correspond installation end plate fixed mounting.

In the implementation process, the BMS bracket and the battery module are fixedly installed through the installation supporting legs.

Further, the installation stabilizer blade is provided with two mounting holes, distance between two mounting holes and two adjacent the mounting hole distance of battery module matches, battery pack still includes the link support, the link support sets up two adjacent between the battery module.

In the above-mentioned realization process, the installation stabilizer blade is provided with two mounting holes, and the distance between two mounting holes matches with the mounting hole distance of two adjacent battery module to set up a linking support between two adjacent battery pack module, increase the wholeness of battery module installation.

Further, the BMS support is provided with a plurality of screw mechanisms, and the BMS support and the BMS board are fixedly mounted by the screw mechanisms.

In the implementation process, the mounting hole of the BMS bracket penetrates through the screw mechanism and is locked by the nut, so that the BMS board is fixed.

Further, the BMS support is provided with a plurality of positioning holes through which the wire harness is positioned.

In the implementation process, the positioning hole can provide an installation position for the wiring harness.

Further, the BMS support is the fretwork support, the fretwork support is provided with a plurality of fillet quad slit.

At above-mentioned realization in-process, there are a plurality of fillet quad slit on the BMS support, can alleviate the whole weight of BMS support.

Furthermore, the edge of the round-corner square hole is provided with a reinforcing rib.

In the above implementation process, the reinforcing ribs may increase the rigidity of the BMS support.

Further, the power battery pack device further comprises a cooling mechanism, and the cooling mechanism is arranged between the battery assembly and the lower shell.

Further, the cooling mechanism is a liquid cooling plate.

In a second aspect, an embodiment of the present application provides an electric vehicle, which includes the power battery pack apparatus described in any one of the first aspects.

Additional features and advantages of the disclosure will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the above-described techniques.

In order to make the aforementioned objects, features and advantages of the present application comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that those skilled in the art can also obtain other related drawings based on the drawings without inventive efforts.

Fig. 1 is a schematic structural diagram of a power battery pack apparatus provided in an embodiment of the present application;

fig. 2 is a schematic cross-sectional structure view of a power battery pack apparatus provided in an embodiment of the present application;

fig. 3 is an axial schematic view of a power battery pack apparatus provided in an embodiment of the present application;

fig. 4 is a schematic structural view of a BMS support provided in an embodiment of the present application;

fig. 5 is a schematic view of a mounting structure of a mounting foot provided in an embodiment of the present application;

fig. 6 is a schematic view illustrating a mounting structure of a BMS support and a BMS board according to an embodiment of the present application;

fig. 7 is a schematic view of an installation structure of a wire harness according to an embodiment of the present application.

Icon: a housing assembly 100; an upper case 110; a lower case 120; a BMS assembly 200; a BMS board 210; a BMS rack 220; mounting legs 221; a screw mechanism 222; a positioning hole 223; a rounded square hole 224; a wire harness 300; a battery pack 400; a battery module 410; the cooling mechanism 500.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.

In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "mounted," "disposed," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or a point connection; either directly or indirectly through intervening media, or may be an internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

Furthermore, the terms "first," "second," and the like, are used primarily to distinguish one device, element, or component from another (the specific nature and configuration may be the same or different), and are not used to indicate or imply the relative importance or number of the indicated devices, elements, or components. "plurality" means two or more unless otherwise specified.

The embodiment of the application provides a power battery pack device and an electric vehicle, which can be applied to the improvement of a power battery pack; according to the power battery pack device, the upper shell is arranged to be convex, and the convex space is formed in the upper shell, so that a BMS plate, a BMS bracket and a wire harness can be integrally placed and installed in the upper shell, the BMS plate and the wire harness can be installed on the BMS bracket, the vertical Z-direction space is fully utilized, and the space utilization rate of a battery pack is improved; therefore, the power battery pack device can achieve the technical effect of improving the space utilization rate of the battery pack.

Referring to fig. 1 and fig. 2, fig. 1 is a schematic structural diagram of a power battery pack device provided in an embodiment of the present application, and fig. 2 is a schematic cross-sectional structural diagram of the power battery pack device provided in the embodiment of the present application; the power pack apparatus includes a housing assembly 100, a BMS assembly 200, a wire harness 300, and a battery assembly 400.

Illustratively, the housing assembly 100 includes an upper housing 110 and a lower housing 120, the upper housing 110 and the lower housing 120 are matingly fitted, and the upper housing 110 is a convex upper housing.

Illustratively, the upper case 110 is provided as a convex upper case, and the convex space inside the upper case 110 may be used to mount the BMS assembly 200 and the wire harness 300, thereby allowing the space utilization of the battery pack to be improved.

Illustratively, the BMS assembly 200 includes a BMS board 210 and a BMS support 220, the wiring harness 300, the BMS board 210 are mounted at the BMS support 220, respectively, and the wiring harness 300, the BMS board 210, and the BMS support 220 are disposed in the convex space of the upper case.

Illustratively, one BMS bracket 220 is provided for mounting the BMS board 210 and the wire harness 300.

Illustratively, the battery assembly 400 includes a plurality of battery modules 410, and the plurality of battery modules 410 are mounted side by side between the BMS support 220 and the lower case 120.

Exemplarily, the BMS module 200 is arranged above the battery module 400, i.e., in the convex space of the upper case 110; thus, the BMS module 200 is disposed at the center tunnel above the battery module 400 in the power battery pack apparatus, improving the space utilization of the power battery pack apparatus.

In some implementation scenarios, the power pack apparatus forms a convex space in the upper housing 110 by arranging the upper housing 110 in a convex shape, so that the BMS board 210, the BMS support 220 and the wire harness 300 can be integrally placed and installed in the upper housing 110, and the BMS board 210 and the wire harness 300 can be installed on the BMS support 220, thereby fully utilizing a vertical Z-direction space and improving the space utilization of the battery pack; therefore, the power battery pack device can achieve the technical effect of improving the space utilization rate of the battery pack.

Referring to fig. 3 and 4, fig. 3 is an axial schematic view of a power battery pack apparatus according to an embodiment of the present disclosure, and fig. 4 is a structural schematic view of a BMS support according to an embodiment of the present disclosure.

Illustratively, the BMS bracket 220 is provided with a plurality of mounting legs 221, and the battery module 410 is provided with mounting end plates, each mounting leg 221 being fixedly mounted with the corresponding mounting end plate.

Illustratively, the BMS bracket 220 is fixedly mounted with the battery module 410 by the mounting legs 221.

In some embodiments, the BMS bracket 220 may be provided with 4 mounting legs 221, i.e., one mounting leg 221 is mounted in each of four directions of the BMS bracket 220; alternatively, the leg mounts 221 are mounted on the upper surfaces of the mounting end plates of the battery modules 410.

Referring to fig. 5, fig. 5 is a schematic view of an installation structure of an installation foot according to an embodiment of the present application.

Illustratively, the mounting legs 221 are provided with two mounting holes, and the distance between the two mounting holes matches the mounting hole distance of two adjacent battery modules 410, and the battery assembly 400 further includes a linking bracket disposed between the two adjacent battery modules 410.

Illustratively, each mounting leg 221 is provided with 2 mounting holes, and optionally, the distance between the mounting holes of the mounting legs 221 is the distance between the mounting holes of two adjacent battery modules 410, so that a linking bracket is formed between the two adjacent battery modules 400, thereby increasing the integrity of the mounting of the battery modules 410.

In some embodiments, the distance between two adjacent mounting legs 221 is the distance between two mounting holes of a single battery module 410.

Referring to fig. 6, fig. 6 is a schematic view illustrating a mounting structure of a BMS bracket and a BMS board according to an embodiment of the present application.

Illustratively, the BMS bracket 220 is provided with a plurality of screw mechanisms 222, and the BMS bracket 220 and the BMS board 210 are fixedly mounted by the screw mechanisms 220.

Illustratively, the BMS support 220 has a plurality of screw mechanisms 222, and the BMS board 210 is fixed by inserting mounting holes of the BMS support 220 through the screw mechanisms 222 and locking them with nuts.

In some embodiments, to reduce the vertical Z-space, the bosses of the screw mechanism 222 are disk-shaped and are welded to the BMS bracket 220 by resistance welding.

Alternatively, the height of the large surface of the BMS bracket 220 and the height of the legs are equal to the distance between the large surface of the battery module 410 and the upper surface of the mounting surface plus a preset distance, which may be 5 to 10 mm.

In some embodiments, the screw mechanism 222 is an M5 screw.

Referring to fig. 7, fig. 7 is a schematic view of an installation structure of a wire harness according to an embodiment of the present application.

Illustratively, the BMS mounting 220 is provided with a plurality of positioning holes 223, and the wiring harness 300 is positioned through the positioning holes 223.

Illustratively, the BMS bracket 220 is provided with a plurality of positioning holes 223, and the positioning holes 223 may provide mounting positions for the wire harness 300.

In some embodiments, the positioning holes 223 are circular holes of 5mm in diameter; alternatively, the plurality of positioning holes 223 are disposed on the same straight line.

Illustratively, BMS cradle 220 is a hollowed-out cradle provided with a plurality of rounded square holes 224.

Illustratively, there are a plurality of rounded square holes 224 in the BMS support frame to reduce the overall weight of the BMS support frame 220.

Illustratively, the edges of the rounded square holes 224 are provided with reinforcing ribs.

Illustratively, the reinforcing ribs may increase the rigidity of the BMS cradle 220.

In some embodiments, the edges of the rounded square holes 224 are turned over to form reinforcing ribs; optionally, the BMS support 220 provided by the embodiment of the present application may adopt a QSTE 340 steel, i.e., may meet the requirements of rigidity and strength.

Illustratively, the power battery pack apparatus further includes a cooling mechanism 500, and the cooling mechanism 500 is disposed between the battery pack 400 and the lower case 120.

Illustratively, the cooling mechanism 500 is a liquid-cooled plate.

Exemplarily, the embodiment of the present application provides an electric vehicle, and the electric vehicle includes the power battery pack apparatus shown in fig. 1 to 7.

Illustratively, the space of the channel in the battery pack is utilized, the BMS board 210 and the wiring harness 300 are integrally placed through the BMS bracket 220, and the vertical Z-direction space is fully utilized, so that the space utilization rate of the battery pack is improved; also, the BMS support 220 inherits the function of mounting the BMS board 210, the wire harness 300, and the function of reinforcing the connection of the two battery modules 410; in addition, BMS support 220 has alleviateed weight through the design of large tracts of land fretwork to form the strengthening rib through the upset frame, improved BMS support 220's rigidity.

In all embodiments of the present application, the terms "large" and "small" are relatively speaking, and the terms "upper" and "lower" are relatively speaking, so that descriptions of these relative terms are not repeated herein.

It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the present application," or "as an alternative implementation" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in this embodiment," "in the examples of the present application," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art should also appreciate that the embodiments described in this specification are all alternative embodiments and that the acts and modules involved are not necessarily required for this application.

In various embodiments of the present application, it should be understood that the size of the serial number of each process described above does not mean that the execution sequence is necessarily sequential, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A power battery pack device is characterized by comprising a shell assembly, a BMS assembly, a wire harness and a battery assembly;

2. The power battery pack apparatus of claim 1, wherein the BMS bracket is provided with a plurality of mounting legs, the battery module is provided with mounting end plates, and each of the mounting legs is fixedly mounted with the corresponding mounting end plate.

3. The power battery pack device according to claim 2, wherein the mounting leg is provided with two mounting holes, a distance between the two mounting holes matches a distance between mounting holes of two adjacent battery modules, and the battery assembly further comprises a linking bracket disposed between the two adjacent battery modules.

4. The power battery pack apparatus according to claim 1, wherein the BMS bracket is provided with a plurality of screw mechanisms by which the BMS bracket and the BMS board are fixedly mounted.

5. The power battery pack device according to claim 1, wherein the BMS support is provided with a plurality of positioning holes through which the wire harness is positioned.

6. The power battery pack device according to claim 1, wherein the BMS bracket is a hollowed bracket provided with a plurality of rounded square holes.

7. The power battery pack device according to claim 6, wherein the edges of the rounded square hole are provided with reinforcing ribs.

8. The power battery pack apparatus according to claim 1, further comprising a cooling mechanism disposed between the battery assembly and the lower housing.

9. The power battery pack apparatus of claim 8, wherein the cooling mechanism is a liquid-cooled plate.

10. An electric vehicle characterized in that it comprises a power battery pack apparatus according to any one of claims 1 to 9.