CN218731495U - Battery Packs and Vehicles - Google Patents

Abstract

The utility model discloses a battery pack and a vehicle. The battery pack comprises: a battery module; a mounting bracket, a cavity is formed in the mounting bracket; The mounting bracket constitutes the casing of the battery module, and the battery module is placed in the cavity. In this way, the underbody plate and the mounting bracket together form the shell of the battery module, and many components such as the battery pack frame, mounting lugs, and battery pack cover are eliminated, which can greatly reduce the weight of the battery pack and the entire vehicle, and improve space utilization. Reduce the cost of the battery pack and the entire vehicle, so that the battery module can be purchased separately instead of the conventional entire battery pack, effectively saving product costs.

Description

Battery Packs and Vehicles

technical field

The utility model relates to the technical field of batteries, in particular to a battery pack and a vehicle.

Background technique

In related technologies, existing power battery packs mainly include battery modules, frames, module bottom plates, module top plates, side plates, end plates, heat conduction layers, direct cooling plates, buffer plates, longitudinal beams, beams, side walls, etc. , There are many parts involved in installation and fixing. Among them, the power battery pack needs to design special installation and fixing structures, such as battery trays, frames, mounting lugs, battery pack cover plates, etc. The structure and process are complex, and the components occupy a large three-dimensional space, are heavy and costly. Moreover, the vehicle body and/or chassis need to be specially designed to install the structural features of the power battery pack, and parts such as baffles are added between the body and the power battery pack. The above-mentioned power battery has at least the following defects: the vehicle body / The chassis and the power battery pack are separated from each other. The power battery pack is fully assembled by the battery manufacturer and then supplied to the vehicle manufacturer. The battery manufacturer cannot realize that only the battery module is assembled by the vehicle factory, and the cost of replacing the power battery after the vehicle is sold high.

Utility model content

The utility model aims at at least solving one of the technical problems existing in the prior art. For this reason, the utility model proposes a battery pack, which fixes the underbody of the vehicle body on the mounting bracket provided with a cavity, makes the underbody of the vehicle body act as the upper cover of the battery pack, cancels the extra upper cover structure, and is compatible with the installation The bracket forms the housing of the battery module, reducing weight and space.

The utility model also provides a vehicle.

The battery pack according to the embodiment of the first aspect of the present invention includes: a battery module; a mounting bracket, a cavity is formed in the mounting bracket; a vehicle body floor, the vehicle body floor cover is arranged above the mounting bracket and connected to the mounting bracket. The mounting bracket constitutes the casing of the battery module, and the battery module is placed in the cavity.

According to the battery pack of the embodiment of the present invention, the underbody of the vehicle body is used as the cover plate of the battery pack, and the underbody of the vehicle body is covered on the mounting bracket, so that the underbody of the vehicle body and the mounting bracket together form the shell of the battery module, and the battery module can be installed In the cavity, on the one hand, many components such as the frame of the battery pack, mounting brackets, and battery pack cover are canceled, which can greatly reduce the weight of the battery pack and the entire vehicle, improve space utilization, and effectively reduce the cost of the battery pack and the entire vehicle ; On the other hand, OEMs can purchase battery modules separately instead of purchasing conventional entire battery packs, effectively saving product costs.

According to some embodiments of the present invention, it further includes: a cover plate, the cover plate is arranged at both ends of the outer wall of the mounting bracket in the first direction and/or the second direction, the first direction and the second direction The two directions are perpendicular to each other.

According to some embodiments of the present invention, at least one side of the cavity is provided with an opening, and the cover plate is disposed opposite to the opening and covers the opening.

According to some embodiments of the present invention, it further includes: a sealing element, the sealing element is arranged between the cover plate and the installation bracket.

According to some embodiments of the present utility model, it further includes: an end plate and a side plate, the end plate is arranged at both ends of the battery module in the first direction, and the side plate is arranged at the battery module at Both ends in the second direction, the first direction and the second direction are perpendicular to each other.

According to some embodiments of the present invention, the end plate is fixedly connected to the side plate, the end plate is connected to the inner wall of the cavity thereof and/or the side plate is fixedly connected to the inner wall of the cavity .

According to some embodiments of the present invention, it further includes: a heat conduction element and a cooling element, the heat conduction element is arranged on the battery module, and the cooling element is arranged between the vehicle body floor and the heat conduction element.

According to some embodiments of the present invention, both ends of the cooling element are connected to both ends of the mounting bracket in the first direction and/or the second direction; and/or, both ends of the cooling element are connected to The end plate; and/or, both ends of the cooling element are connected to the side plate.

According to some embodiments of the present invention, it further includes: a thermal insulation buffer, and the thermal insulation buffer is arranged on the bottom wall of the installation bracket.

According to some embodiments of the present utility model, there are multiple battery modules, and the multiple battery modules are stacked in the first direction and/or the second direction and/or the third direction; and/or, the The battery module includes a plurality of electric cells, and the plurality of electric cells are stacked in the first direction or the second direction.

The vehicle according to the embodiment of the second aspect of the present invention includes: a vehicle body side member; the battery pack, the battery module is placed in the cavity and forms the battery with the vehicle body floor and the mounting bracket The battery pack is installed at any height position of the vehicle body side beam and connected with the vehicle body side beam.

According to some embodiments of the present invention, the mounting bracket and the vehicle body bottom plate are installed below the vehicle body side beam, and the vehicle body bottom plate and/or the mounting bracket are fixedly connected to the vehicle body side beam.

According to some embodiments of the present utility model, the vehicle body bottom plate is installed above the vehicle body side beam and is fixedly connected with the vehicle body side beam, and the mounting bracket is arranged under the vehicle body bottom plate and connected to the vehicle body bottom plate And/or the longitudinal beam of the vehicle body is fixedly connected.

According to some embodiments of the present invention, the vehicle body side beam includes: a front side beam part, a middle side beam part and a rear side beam part, and the battery pack is arranged on the front side beam part, the middle side beam part and one of the rear side members.

Additional aspects and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.

Description of drawings

The above and/or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 is an explosion schematic diagram of a battery pack according to an embodiment of the present invention;

Fig. 2 is a schematic structural view of the battery module according to the first embodiment of the present invention;

Fig. 3 is a schematic structural diagram of a battery module according to a second embodiment of the present invention;

Fig. 4 is a schematic structural diagram of a battery module according to a third embodiment of the present invention;

Fig. 5 is a front view of the installation of the battery pack according to the embodiment of the present invention;

Fig. 6 is a top view of the installation of the battery pack according to the embodiment of the present invention;

Fig. 7 is a side view of the installation of the battery pack according to the embodiment of the present invention;

Fig. 8 is a perspective view of the installation of the battery pack according to the embodiment of the present invention.

Reference signs:

100, battery pack; 10, battery module; 11, battery cell; 20, mounting bracket; 21, cavity; 22, opening; 30, body bottom plate; 31, cover plate; 32, end plate; 33, side plate; 34. Heat conduction part; 35. Cooling part; 36. Heat insulation buffer part; 40. Car body side beam; 41. Front side beam part; 42. Middle side beam part; 43. Rear side beam part.

Detailed ways

Embodiments of the utility model are described in detail below, and the embodiments described with reference to the accompanying drawings are exemplary, and embodiments of the utility model are described in detail below.

The following describes a battery pack 100 according to an embodiment of the present invention with reference to FIGS. 1-8 , and the present invention also proposes a vehicle having the above-mentioned battery pack 100 .

As shown in FIGS. 1-8 , the battery pack 100 includes: a battery module 10 , a mounting bracket 20 and an underbody 30 .

Wherein, a cavity 21 is formed in the installation bracket 20 , and the battery module 10 is placed in the cavity 21 . In this way, installing the battery module 10 in the cavity 21 can serve as a fixed support for the battery module 10 and can effectively protect the bottom and sides of the battery module 10 .

And, the underbody 30 is covered above the installation bracket 20 and constitutes a casing of the battery module 10 together with the installation bracket 20 . In this way, the underbody 30 is covered above the mounting bracket 20, so that the underbody 30 directly acts as a cover for the battery pack 100, so that the underbody 30 and the mounting bracket 20 together form the shell of the battery module 10. On the one hand, the battery module is eliminated. The frame of the battery pack 100, the mounting lugs, the cover plate 31 of the battery pack 100 and many other components can greatly reduce the weight of the battery pack 100 and the vehicle, improve the space utilization rate, reduce the difficulty of the process, and reduce the cost of the battery pack 100 and the vehicle; On the other hand, the vehicle manufacturer can purchase the battery module 10 separately, and the control components such as the battery management system related to the battery pack 100 can be separately installed in other positions of the vehicle, without purchasing the conventional entire battery pack 100, thereby improving the battery pack capacity. 100 energy density and improve the battery life of the electric vehicle, while realizing the lightweight design of the vehicle and the battery pack 100.

Thus, the underbody 30 is used as the cover plate of the battery pack 100, and the underbody 30 is covered on the mounting bracket 20, so that the underbody 30 and the mounting bracket 20 together form the shell of the battery module 10, and the battery module 10 can be Installed in the cavity 21, on the one hand, the frame of the battery pack 100, mounting lugs, battery pack cover and many other components are eliminated, which can greatly reduce the weight of the battery pack 100 and the entire vehicle, improve space utilization, and effectively reduce battery life. package 100 and the cost of the entire vehicle; on the other hand, the vehicle manufacturer can purchase the battery module 10 separately without purchasing the conventional entire battery pack 100, thereby increasing the energy density of the battery pack 100 and improving the battery life of the electric vehicle, and realizing Lightweight design of the vehicle and battery pack 100 .

In addition, in the disclosure of this utility model, the orientation words "front, rear, left, and right" usually refer to the front, rear, left, and right of the vehicle itself, specifically, the direction toward the left wheel is left, and the direction toward the right wheel The direction towards the front of the vehicle is the front, and the direction towards the rear of the vehicle is the rear.

As shown in FIGS. 1-4 , the battery pack 100 further includes: a cover plate 31 disposed on both ends of the outer wall of the mounting bracket 20 in the first direction and/or the second direction, the first direction and the second direction perpendicular to each other. In this way, the cover plate 31 can be arranged at both ends of the outer wall of the mounting bracket 20 in the first direction, or the cover plate 31 can be arranged at both ends of the outer wall of the mounting bracket 20 in the second direction, or the cover plate 31 can be arranged at the two ends of the outer wall of the mounting bracket 20 in the second direction. 20 at both ends of the outer wall in the first direction and the second direction. 1 and 3, two cover plates 31 are respectively provided at both ends of the outer wall of the mounting bracket 20 in the first direction, which can protect the outer wall of the mounting bracket 20 and strengthen the shell strength of the battery pack 100 at the same time. .

Moreover, at least one side of the cavity 21 is provided with an opening 22 , and the cover plate 31 is disposed opposite to the opening 22 and covers the opening 22 . In this way, after the underbody 30 is fixedly connected to the mounting bracket 20, the battery module 10 can be assembled into the cavity 21 through the opening 22 of the mounting bracket 20, thus canceling the assembly method of the battery module 10 from the up and down direction, The battery module 10 can be assembled from the left and right sides of the vehicle or the front and rear sides of the vehicle. When the battery pack 100 has an after-sales quality problem, the entire battery pack 100 can be disassembled directly from the opening 22 without returning the entire battery pack 100 to the manufacturer. The cover plate 31 is used to replace the battery module 10, which effectively saves after-sales maintenance costs. In addition, when the installation cover plate 31 and the installation bracket 20 are fixed, any one of bolt fastening, rivet riveting, and welding may be used.

Further, the installation bracket 20 can be provided with openings 22 on both sides in the first direction, so that the two cover plates 31 are correspondingly covered on the two openings 22, so that the battery module 10 can be independently opened from any one of the first directions. It can also be installed together from both sides of the first direction. Alternatively, the installation bracket 20 may be provided with an opening 22 on one side or both sides of the second direction, and the cover plate 31 shall be placed on the opening 22. In this way, the battery module 10 may be installed independently from any direction in the second direction. It can be installed on one side, and can also be installed together from both sides in the second direction.

To sum up, the installation method of the battery module 10 can be designed to be installed from the left or right side in the width direction of the vehicle, and can also be installed from the front or rear in the length direction of the vehicle. In this way, when there is a battery quality problem after the vehicle terminal is sold, the 4S shop or repair shop can open multiple covers 31 or any one of the covers 31 according to the information fed back by the vehicle's BMS system (battery management system), and the corresponding quality The problematic battery module 10 is replaced, thereby avoiding the need to replace the entire battery pack 100, and can also solve the cost problem of dismantling all conventional battery packs 100 and sending them back to the manufacturer for maintenance, effectively reducing after-sales maintenance costs.

In addition, the number of openings 22 and the number of cover plates 31 mentioned above are not limited thereto, and can be designed and matched according to the actual installation situation of the battery module 10, so that the battery module 10 can be assembled from the side of the mounting bracket 20, which is convenient for installation and disassembly. solution maintenance.

In the present utility model, the above-mentioned first direction refers to the width direction of the battery pack 100, corresponding to the left-right direction or width direction of the vehicle, and the second direction refers to the length direction of the battery pack 100, corresponding to the front-rear direction of the vehicle Or the length direction, the third direction refers to the height direction of the battery pack 100 , which is consistent with the height direction of the vehicle.

Wherein, the battery pack 100 further includes: a seal, which is arranged between the cover plate 31 and the mounting bracket 20 . In this way, a seal is provided between the cover plate 31 and the mounting bracket 20. When the battery module 10 is assembled into the cavity 21, the opening 22 can be firmly sealed by the seal and the cover plate 31 to improve the cavity 21. The tightness prevents water and impurities from entering the cavity 21.

In the embodiment of the present utility model, the sealing member can be a sealant, and before the cover plate 31 is installed, a layer of glue can be coated around the surface of the cover plate 31, or a layer of glue can be coated on the contact area between the mounting bracket 20 and the cover plate 31. Covered with glue, as a sealing protection function.

As shown in FIG. 1 , the battery pack 100 further includes: an end plate 32 and a side plate 33, the end plate 32 is arranged at both ends of the battery module 10 in the first direction, and the side plate 33 is arranged at the two ends of the battery module 10 in the second direction. The two ends in the direction, the first direction and the second direction are perpendicular to each other. In this way, end plates 32 are provided at both ends of the battery module 10 along the first direction, and side plates 33 are provided at both ends of the battery module 10 along the second direction. Based on the fact that the battery pack 100 generally has a square structure, the first The direction and the second direction are perpendicular to each other, that is, the end plate 32 and the side plate 33 are perpendicular to each other. In this way, the end plates 32 and the side plates 33 are arranged around the battery module 10 , which can effectively fix and support the battery module 10 and effectively prevent the battery module 10 from being bent and deformed.

Specifically, in the present utility model, after all the battery modules 10 are installed in the cavity 21, then the end plates 32 and the side plates 33 are installed on the surrounding sides of the battery modules 10 to fix and support all the battery modules. Battery module 10.

Wherein, the end plate 32 is connected to the side plate 33 , the end plate 32 is connected to the inner wall of the cavity 21 and/or the side plate 33 is connected to the inner wall of the cavity 21 . That is to say, the two ends of the end plate 32 are fixedly connected to the ends of the two side plates 33 respectively, and any one of methods such as snap fit, bolt fastening, and rivet fastening can be used to ensure that the battery module 10 is completely encased. And, through the connection of the end plate 32 and the inner wall of the cavity 21, and the connection of the side plate 33 with the inner wall of the cavity 21, not only the battery module 10 can be protected, but also the battery module 10 can be prevented from being damaged in the cavity 21. Shake freely inside, so as to ensure that the battery module 10 can work normally. Moreover, the end plate 32 and the inner wall of the cavity 21, the side plate 33 and the inner wall of the cavity 21 can be fixed by snap fit, bolt fastening, rivet fastening, etc., which can effectively improve the height of the end plate 32. And the fixing reliability of the side plate 33 in the cavity 21. Certainly, the above-mentioned fixed connection manner includes but is not limited to this.

In addition, the materials of the cover plate 31, the end plate 32, and the side plate 33 can be made of plastic, aluminum plate, steel plate, etc., and any process such as injection molding, die-casting, and stamping can be used, so that the battery module 10 in the cavity 21 can be adjusted. The components play an effective protective role.

Moreover, the battery pack 100 further includes: a heat conduction element 34 and a cooling element 35 , the heat conduction element 34 is disposed on the battery module 10 , and the cooling element 35 is disposed between the vehicle body floor 30 and the heat conduction element 34 . In this way, after the battery module 10 is installed in the cavity 21, the heat conduction member 34 and the cooling member 35 are placed above the battery module 10, so that the heat generated by the battery module 10 can be transferred to the cooling unit through the heat conduction of the heat conduction member 34. The component 35 , the cooling component 35 can transfer heat, thereby effectively reducing the heat of the battery module 10 .

Wherein, after all the battery modules 10, heat conducting elements 34, and cooling elements 35 are installed in the cavity 21, end plates 32 and side plates 33 can be installed, which can be used to fix and support all the battery modules 10, heat conducting elements 34 and cooling element 35. In addition, the cooling member 35 may adopt a direct cooling plate or a liquid cooling plate structure, which can effectively dissipate heat from the battery module 10 .

Or, the two ends of the cooling element 35 are connected to the two ends of the mounting bracket 20 in the first direction and/or the second direction; and/or, the two ends of the cooling element 35 are connected to the end plate 32; and/or, the cooling Both ends of the piece 35 are connected to the side plate 33 . In other words, the cooling element 35 can be installed and fixed separately. After the cooling element 35 is arranged on the heat conducting element 34, the two ends of the cooling element 35 can be connected to the two ends of the mounting bracket 20 in the first direction, or connected to the mounting bracket 20. The two ends in the second direction, or connected to the two ends of the installation bracket 20 in the first direction and the second direction, realize the installation and connection of the cooling element 35 and the installation bracket 20 . For example, flanges are provided on both ends of the cooling element 35, and the flanges can be matched with the side walls of the mounting bracket 20, and then fixed by snap fit, bolt fastening, rivet fastening, etc. The connection is made so as to realize the connection between the mounting bracket 20 and the cooling element 35 . Alternatively, both ends of the cooling element 35 can be connected to the end plate 32 , and in the same way as the connection method of the mounting bracket 20 , the connection between the cooling element 35 and the end plate 32 can also be realized. Alternatively, the same is true for the connection between the two ends of the cooling element 35 and the side plate 33 , which will not be repeated here. In this way, unlike the assembly method of installing the end plate 32 and the side plate 33 after all the battery modules 10, heat conduction elements 34, and cooling elements 35 are installed in the cavity 21, the end plate 32, the side plate 33, and the battery module can be installed first. 10, and then install the heat conducting element 34 and the cooling element 35, both of which can ensure the structural stability of the battery pack 100.

In addition, after the cooling element 35 is connected to the mounting bracket 20 or the end plate 32 or the side plate 33 , the heat conducting element 34 can be clamped between the battery module 10 and the cooling element 35 to fix the heat conducting element 34 .

As shown in FIG. 1 , the battery pack 100 further includes: a thermal insulation buffer 36 disposed on the bottom wall of the mounting bracket 20 . In this way, before the battery module 10 is installed, the heat insulation buffer 36 is first installed on the bottom wall of the cavity 21 . The main functions of the heat insulation buffer 36 are heat insulation, heat preservation and buffering. In a high temperature environment, isolate the high temperature of the external environment, reduce the impact of the high temperature of the external environment on the performance of the battery pack 100, and play a role of heat insulation; in a low temperature environment, isolate the low temperature of the external environment, reduce the impact of the low temperature of the external environment on the battery pack 100 Influenced on performance, it can keep the battery pack 100 warm; when the vehicle is on a bumpy road, or when the bottom of the vehicle is hit, the thermal insulation buffer 36 can effectively protect the battery module 10 in the battery pack 100 .

In the embodiment of the present utility model, the installation method of the battery pack 100 can be referred to as follows:

First, the installation bracket 20 is assembled with the vehicle body floor 30 in advance; before the battery module 10 is installed, the heat insulation buffer member 36 is installed on the bottom wall of the cavity 21 of the installation bracket 20, and then all the battery modules can be installed 10 is placed in the cavity 21; after all the battery modules 10 are placed in the cavity 21, the heat conducting member 34 and the cooling member 35 are respectively placed above the battery module 10; then, the end plate 32 and the side plate 33 are installed in the cavity Between the body 21 and the battery module 10, to fix and support all the battery modules 10, heat conduction members 34, and cooling members 35; after other conventional parts of the battery pack 100 are installed, and the internal circuits of the battery pack 100 are connected at the same time, the next step The cover plate 31 is installed so that the cover plate 31 seals the opening 22 , thereby completing the assembly of the battery pack 100 and ensuring the normal operation of the battery pack 100 .

As shown in FIG. 3 and FIG. 4, there are multiple battery modules 10, and the plurality of battery modules 10 are stacked in the first direction and/or the second direction and/or the third direction; and/or, the battery modules 10 It includes multiple electric cores 11, and the multiple electric cores 11 are stacked in the first direction or the second direction. In this way, based on the performance requirements of the vehicle, the space volume size, the total power of the battery pack 100 and other parameter designs, multiple battery modules 10 can be stacked and arranged along the first direction and/or the second direction and/or the third direction to form A battery pack 100 structure meeting the design requirements. Moreover, the battery module 10 may include a plurality of battery cells 11 , and the plurality of battery cells 11 are stacked in the first direction or the second direction to form a battery module 10 , and the plurality of battery modules 10 can be stacked. Moreover, the number of battery cells 11 and the number of battery modules 10 are designed according to the performance requirements of the vehicle.

Among them, when the battery pack 100 is installed in the vehicle, the positive and negative poles of each battery cell 11 can be connected in series in sequence, or all the battery cells 11 or battery modules 10 can be installed in the cavity 21 first, and then The positive and negative poles of each battery cell 11 are connected in series and fixed. Certainly, the installation manner of the battery module 10 includes but is not limited to the above-mentioned installation manner.

As shown in Figure 3 and Figure 4, in the first direction, the battery module 10 can be designed into two parts, the left and right parts, the positive and negative poles of the battery module 10 on the left are connected in series one by one on the left, and the battery module 10 on the right The positive and negative poles of group 10 are connected in series one by one on the right side. In the third direction, the battery module 10 can be designed as one layer or two layers, or a multi-layer scheme. The specific number of layers and the size of the battery cell 11 or battery module 10 are designed according to the performance requirements of the vehicle. Therefore, for the overall structure of the battery pack 100 , it can be designed to be composed of a plurality of battery cells 11 in the first direction, the second direction, and the third direction, and can also be designed to be composed of a plurality of battery modules 10 .

The vehicle according to the embodiment of the second aspect of the present utility model includes: a vehicle body side member 40 and a battery pack 100, the battery module 10 is placed in the cavity 21 and forms the battery pack 100 with the vehicle body floor 30 and the mounting bracket 20, the battery pack 100 It can be installed at any height position of the vehicle body side member 40 and connected with the vehicle body side member 40 . In this way, after the battery module 10 bought from the manufacturer is installed in the cavity 21, the battery pack 100 is formed together with the underbody panel 30 and the mounting bracket 20, and then the battery pack 100 is fixedly connected to the side member 40 of the vehicle body, so that the battery pack 100 is securely attached to the vehicle body side member 40 .

As shown in FIGS. 5-8 , in one embodiment of the present invention, the mounting bracket 20 and the underbody 30 are installed under the side rail 40 of the vehicle body, and the underpanel 30 and/or the mounting bracket 20 are fixed to the side rail 40 of the vehicle body. connect. In this way, based on the different heights of the chassis of different models, the mounting bracket 20 and the underbody panel 30 can be installed at any height position of the side member 40 of the vehicle body. In this embodiment, the mounting bracket 20 and the vehicle body bottom panel 30 are installed below the vehicle body side member 40 , and the vehicle body bottom panel 30 is connected to the vehicle body side member 40 with a fixed bracket. In order to further strengthen the overall structure of the battery pack 100 , the mounting bracket 20 may also be fixedly connected to the side member 40 of the vehicle body, for example, by means of a connecting bracket.

In yet another embodiment of the present utility model, the vehicle body bottom panel 30 is installed above the vehicle body side beam 40 and is fixedly connected with the vehicle body side beam 40 , and the mounting bracket 20 is arranged below the vehicle body bottom panel 30 and is connected to the vehicle body bottom panel 30 and/or Or the vehicle body side member 40 is fixedly connected. In this way, the underbody 30 can also be installed above the longitudinal beam 40 of the vehicle body, so that the underpanel 30 is fixedly connected with the longitudinal beam 40 of the vehicle body, and then the mounting bracket 20 can be fixed under the underside of the vehicle body 30, so that it can be connected with the underbody 30 and the longitudinal beam of the vehicle body. The beam 40 is fixedly connected, so that the battery pack 100 can be reliably fixed on the vehicle body longitudinal beam 40 . Wherein, when the mounting bracket 20 is fixed below the vehicle body floor 30, the mounting bracket 20 may be arranged opposite to the vehicle body longitudinal beam 40 on both sides of the first direction, so that the mounting bracket 20 may be positioned on one side of the second direction along the second direction. Or, openings 22 are provided on both sides, so that the battery module 10 can be installed from the front and rear sides of the vehicle.

In addition, the vehicle body side member 40 includes: a front side member 41 , a middle side member 42 and a rear side member 43 , and the battery pack 100 is installed in the front side member 41 , the middle side member 42 and the rear side member 43 . one. In this way, in order to facilitate the installation of components such as the battery cell 11 or the battery module 10, the vehicle body side member 40 can be disassembled into the front side member 41, the middle side member 42 and the rear side member 43, and the battery pack 100 can be installed on the After one of the front side member 41, the middle side member 42 and the rear side member 43, and after the relevant components of the battery pack 100 are installed, the front side member 41, the middle side member 40 of the vehicle body side member 40 The three sections of the beam part 42 and the rear longitudinal beam part 43 are installed and connected together to improve the installation convenience of the battery pack 100 .

And, corresponding to the longitudinal beam 40 of the vehicle body, the underbody 30 mainly has three areas, namely, the front floor area, the middle floor area, and the rear floor area. The underbody 30 in the three areas can be designed into different shapes according to the actual needs of the design scheme. Usually, the mounting bracket 20 is installed in the mid-floor area, and the front and rear floor areas of the underbody 30 can also be designed to be hollowed out or cut to remove part of the area according to the installation needs of other components, thereby improving installation efficiency.

In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Clockwise", "Counterclockwise", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying No device or element must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as limiting the invention.

In the description of this specification, references to the terms "one embodiment," "some embodiments," "exemplary embodiments," "example," "specific examples," or "some examples" are intended to mean that the implementation Specific features, structures, materials or characteristics described in an embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example.

Although the embodiments of the present invention have been shown and described, those skilled in the art can understand that various changes, modifications, substitutions and modifications, the scope of the present invention is defined by the claims and their equivalents.

Claims (14)

1. A battery pack (100), characterized in that, comprising: battery module (10); An installation bracket (20), a cavity (21) is formed in the installation bracket (20), and the battery module (10) is placed in the cavity (21); The vehicle body bottom plate (30), the vehicle body bottom plate (30) is covered above the installation bracket (20) and constitutes the shell of the battery module (10) together with the installation bracket (20). 2. The battery pack (100) according to claim 1, further comprising: a cover plate (31), the cover plate (31) being arranged on the mounting bracket (20) in the first direction and/or Or both ends of the outer wall in the second direction, the first direction and the second direction are perpendicular to each other. 3. The battery pack (100) according to claim 2, characterized in that, at least one side of the cavity (21) is provided with an opening (22), and the cover plate (31) and the opening (22) ) are arranged oppositely and cover the opening (22). 4. The battery pack (100) according to Claim 2, further comprising: a sealing member, the sealing member being arranged between the cover plate (31) and the mounting bracket (20). 5. The battery pack (100) according to claim 1, further comprising: an end plate (32) and a side plate (33), the end plate (32) being arranged on the battery module (10) ) at both ends in the first direction, the side plates (33) are arranged at both ends of the battery module (10) in the second direction, and the first direction and the second direction are perpendicular to each other. 6. The battery pack (100) according to claim 5, characterized in that, the end plate (32) is connected to the side plate (33), and the end plate (32) is connected to the cavity (21 ) is connected to the inner wall of the cavity (21) and/or the side plate (33) is connected to the inner wall of the cavity (21). 7. The battery pack (100) according to claim 5, further comprising: a heat conduction element (34) and a cooling element (35), the heat conduction element (34) being arranged on the battery module (10) ) and the cooling element (35) is disposed between the underbody (30) and the heat conducting element (34). 8. The battery pack (100) according to claim 7, characterized in that, both ends of the cooling member (35) are connected to the mounting bracket (20) in the first direction and/or the second direction both ends; and/or, Both ends of the cooling element (35) are connected to the end plate (32); and/or, Both ends of the cooling element (35) are connected to the side plate (33). 9. The battery pack (100) according to claim 1, further comprising: a thermal insulation buffer (36), the thermal insulation buffer (36) being arranged at the bottom of the mounting bracket (20) wall. 10. The battery pack (100) according to claim 1, characterized in that there are multiple battery modules (10), and multiple battery modules (10) are arranged in the first direction and/or in the second direction direction and/or third direction stacking settings; and/or, The battery module (10) includes a plurality of battery cells (11), and the plurality of battery cells (11) are stacked in a first direction or a second direction. 11. A vehicle, characterized in that it comprises: Body longitudinal beams (40); The battery pack (100) according to any one of claims 1-10, wherein the battery module (10) is placed in the cavity (21) and connected to the vehicle body floor (30) and the mounting bracket (20) The battery pack (100) is configured such that the battery pack (100) is installed at any height position of the vehicle body side member (40) and connected to the vehicle body side member (40). 12. The vehicle according to claim 11, characterized in that, the mounting bracket (20) and the underbody panel (30) are installed under the side member (40) of the vehicle body, and the underbody panel (30) And/or the mounting bracket (20) is fixedly connected to the vehicle body longitudinal beam (40). 13. The vehicle according to claim 11, characterized in that, the underbody panel (30) is installed above the vehicle body longitudinal beam (40) and is fixedly connected with the vehicle body longitudinal beam (40), and the installation The bracket (20) is arranged under the vehicle body floor (30) and is fixedly connected with the vehicle body floor (30) and/or the vehicle body longitudinal beam (40). 14. The vehicle according to claim 11, characterized in that, the vehicle body longitudinal beam (40) comprises: a front longitudinal beam portion (41), a middle longitudinal beam portion (42) and a rear longitudinal beam portion (43), the The battery pack (100) is mounted on one of the front side beam (41), the middle side beam (42) and the rear side beam (43).

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