CN217944883U

CN217944883U - Battery package, automobile body structure and vehicle

Info

Publication number: CN217944883U
Application number: CN202222195986.5U
Authority: CN
Inventors: 王磊; 吴崇铭; 沙鹤松
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-12-02
Anticipated expiration: 2032-08-19

Abstract

The embodiment of the application provides a battery package, body structure and vehicle, belongs to vehicle technical field, includes: the upper cover assembly is connected with the lower box body, and the module assembly is positioned in an accommodating space formed by the upper cover assembly and the lower box body; the upper cover assembly comprises an upper cover, and a seat cross beam and a reinforcing beam which are arranged on the upper cover, and the upper cover assembly is used as a vehicle body bottom plate and connected with a vehicle body of a vehicle; at least one longitudinal beam is arranged on the surface, facing the upper cover assembly, of the lower box body, the length direction of the longitudinal beam is perpendicular to the length direction of the seat cross beam, and the longitudinal beam is connected with the upper cover. Through battery package, body construction and vehicle that this application embodiment provided, can guarantee the intensity and the rigidity of battery package self when reducing battery package weight.

Description

Battery package, automobile body structure and vehicle

Technical Field

The embodiment of the application relates to the technical field of vehicles, in particular to a battery pack, a vehicle body structure and a vehicle.

Background

Along with the popularization of new energy automobiles, the power battery becomes a front line of the related enterprise technology, the improvement of the energy density of the power battery is the research and development focus of each enterprise, and the improvement of the light weight of the battery pack is an effective way for improving the energy density.

The battery pack is an important component of the power battery, and generally includes a battery module and a battery box, wherein the battery module is accommodated in the battery box. When the problem of lightweight is considered, generally, subtract heavy design on battery module or battery box, however, subtract heavy design after, the intensity and the rigidity of battery package self can receive certain influence, lead to the battery to contain easily damaged.

Disclosure of Invention

The embodiment of the application provides a battery pack, a vehicle body structure and a vehicle, and aims to reduce the weight of the battery pack and ensure the strength and rigidity of the battery pack.

A first aspect of an embodiment of the present application provides a battery pack, including:

the upper cover assembly is connected with the lower box body, and the module assembly is positioned in an accommodating space formed by the upper cover assembly and the lower box body;

the upper cover assembly comprises an upper cover, and a seat cross beam and a reinforcing beam which are arranged on the upper cover, and the upper cover assembly is used as a vehicle body bottom plate and connected with a vehicle body of a vehicle;

at least one longitudinal beam is arranged on the surface, facing the upper cover assembly, of the lower box body, the length direction of the longitudinal beam is perpendicular to the length direction of the seat cross beam, and the longitudinal beam is connected with the upper cover.

Optionally, the module assembly comprises a liquid cooling plate, a battery module and a protection plate;

the liquid cooling plate is connected with the upper cover assembly, and the protection plate is connected with the lower box body;

the battery module is arranged between the liquid cooling plate and the protection plate, and the battery module is simultaneously connected with the liquid cooling plate and the protection plate.

Optionally, the protection plate includes a first plate body, a second plate body and a third plate body, the second plate body is located between the first plate body and the third plate body, and the second plate body is connected to the first plate body and the third plate body at the same time;

the second plate body includes a metallic material.

Optionally, a plurality of honeycomb holes are formed in the second plate body, and the plurality of honeycomb holes penetrate through the second plate body.

Optionally, a plurality of the honeycomb holes are uniformly distributed on the second plate body.

Optionally, the upper cover includes a receiving area, the receiving area is disposed in a protruding manner away from the module assembly relative to the upper cover, and the control module of the battery module is located in the receiving area.

Optionally, a sealant is arranged at a joint of the upper cover assembly and the lower box body.

Optionally, a reinforcing rib is arranged on a surface of the lower box body, which faces away from the upper cover assembly.

A second aspect of the embodiment of the present application provides a vehicle body structure, including the battery pack provided in the first aspect of the embodiment of the present application, and a rocker beam and a front side gusset;

the battery pack comprises an upper cover assembly, and the upper cover assembly is connected with the threshold beam and the front side wall reinforcing plate.

A third aspect of the embodiments of the present application provides a vehicle including a vehicle body structure as provided in the second aspect of the embodiments of the present application.

Has the advantages that:

the application provides a battery pack, a vehicle body structure and a vehicle, wherein the battery pack is provided with an upper cover assembly, a module assembly and a lower box body, the upper cover assembly comprises an upper cover, a seat cross beam and a stiffening beam, the seat cross beam and the stiffening beam are arranged on the upper cover, the upper cover assembly is used as a vehicle body bottom plate and is connected with a vehicle body of the vehicle, at least one longitudinal beam is arranged on the surface of the lower box body, which faces the upper cover assembly, and the longitudinal beam is connected with the upper cover; the upper cover assembly is used as a vehicle body bottom plate, so that the structure of the battery pack can be simplified, and the weight of the battery pack is reduced; the longitudinal beams arranged on the lower box body can improve the rigidity of the battery pack, and the seat cross beam and the reinforcing beam integrated with the upper cover can improve the strength of the battery pack, so that the anti-collision capacity of the battery pack is improved, and the service life of the battery pack is prolonged.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the description of the embodiments of the present application will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is an exploded view of a battery pack according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of an upper cover assembly of a battery pack according to an embodiment of the present application;

fig. 3 is an exploded view of a battery module of a battery pack according to an embodiment of the present disclosure;

fig. 4 is an exploded view of a protection plate of a battery module in a battery pack according to an embodiment of the present disclosure;

fig. 5 is a schematic view of a vehicle body structure according to an embodiment of the present application.

Description of reference numerals: 1. an upper cover assembly; 11. an upper cover; 111. a containment region; 112. a wire arrangement area; 12. a seat cross member; 13. a reinforcing beam; 2. a module assembly; 21. a liquid-cooled plate; 22. a battery module; 23. a protection plate; 231. a first plate body; 232. a second plate body; 233. a third plate body; 3. a lower box body; 31. a stringer; 32. reinforcing ribs; 41. a threshold beam; 42. front side wall reinforcing plate.

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 some, but not all, embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Referring to fig. 1, a battery pack disclosed in an embodiment of the present application includes an upper cover assembly 1, a module assembly 2, and a lower case 3. The upper cover assembly 1 is connected with the lower box body 3, and the module assembly 2 is positioned in an accommodating space formed by the upper cover assembly 1 and the lower box body 3.

Specifically, referring to fig. 2, the upper cover assembly 1 includes an upper cover 11, and a seat cross member 12 and a reinforcement beam 13 provided on the upper cover 11. The number of the seat cross members 12 is two, the number of the reinforcement beams 13 is one, the two seat cross members 12 and the one reinforcement beam 13 are provided in parallel on the upper cover 11, and the longitudinal directions of the seat cross members 12 and the reinforcement beams 13 are perpendicular to the longitudinal direction of the vehicle body.

Referring to fig. 2, the upper cover 11 has a line arranging area 112 and a receiving area 111, the receiving area 111 is located at one side of the upper cover 11, and the receiving area 111 is protruded away from the module assembly 2, that is, a recessed area can be formed at one side facing the module assembly 2, and the recessed area can receive a part of the structure of the module assembly 2. The wire arrangement area 112 is disposed along the length direction of the upper cover 11, and one end of the wire arrangement area 112 is communicated with the accommodating area 111, the wire arrangement area 112 is also protruded towards the direction far away from the module assembly 2, and the wires of the module assembly 2 can be arranged through the wire arrangement area 112.

Meanwhile, in the embodiment of the present application, the upper cover assembly 1 is connected to the vehicle body of the vehicle as the underbody, so that the overall structure of the battery pack can be simplified, the weight of the battery pack can be reduced, and the space in the Z direction (i.e., the vehicle height direction) of the vehicle can be provided.

Referring to fig. 3, the module assembly 2 includes a liquid-cooled plate 21, a battery module 22, and a protection plate 23. Specifically, the liquid cooling plate 21 may be connected to the upper cover assembly 1 by bonding, and the liquid cooling plate 21 mainly plays a role in dissipating heat and cooling the battery module 22. The battery module 22 is positioned between the liquid cooling plate 21 and the protection plate 23, one surface of the battery module 22 is bonded with the liquid cooling plate 21, and the other surface of the battery module 22 is bonded with the protection plate 23; the battery module 22 supplies power to the entire battery pack. In order to reduce the weight of the battery pack, in the embodiment of the present application, the battery module 22 is a blade battery. One surface of the protective plate 23 is bonded to the battery module 22, and the other surface is bonded to the lower case 3, and the protective plate 23 mainly functions to protect the battery module 22.

Referring to fig. 1, the lower case 3 has a certain accommodating space, and after the lower case is connected to the upper cover assembly 1, an accommodating space is formed between the upper cover assembly 1 and the lower case 3, and the battery module 22 can be placed in the accommodating space. Meanwhile, at least one longitudinal beam 31 is arranged on the surface of the lower box 3 facing the upper cover assembly 1, the length direction of the at least one longitudinal beam 31 is perpendicular to the length direction of the seat cross beam 12, i.e. the length direction of the longitudinal beam 31 is parallel to the length direction of the vehicle body, and the longitudinal beam 31 is fixedly connected with the upper cover 11 through a bolt, so that the lower box 3 and the upper cover assembly 1 can form a whole.

In the present embodiment, only one longitudinal beam 31 is provided, and in other embodiments, two, three, four, or more longitudinal beams 31 may be provided, but in order to reduce the weight of the battery pack, the number of the longitudinal beams 31 is not more than two.

According to the battery pack provided by the embodiment of the application, on one hand, the upper cover assembly 1 is used as a vehicle body bottom plate, so that the structure of the battery pack can be simplified, and the weight of the battery pack is reduced; on the other hand, the longitudinal beams 31 provided on the lower case 3 can improve the rigidity of the battery pack itself, and the seat cross beam 12 and the reinforcing beam 13 integrated with the upper cover 11 can improve the strength of the battery pack, thereby improving the anti-collision ability of the battery pack and further increasing the service life of the battery pack.

Further, the module assembly 2 further comprises a control module and a support frame. Wherein the control module is connected with the battery module 22 for controlling the use of the battery module 22, and the control module can be disposed in the accommodating area 111 of the upper cover 11, so as to facilitate the integration of the vehicle body.

The support frame is located box 3 down to be provided with a plurality of connecting blocks of being connected with the support frame at battery module 22's tip, still set up the hole of dodging that corresponds with the connecting block on the protective plate 23, make the support frame pass through bolted connection with the connecting block in the hole of dodging. The support frame can support the battery module 22, thereby better protecting the battery module 22.

In an alternative embodiment, referring to fig. 4, the present embodiment provides a battery pack, in which the protection plate 23 includes a first plate 231, a second plate 232 and a third plate 233, wherein the second plate 232 is located between the first plate 231 and the third plate 233, and the second plate 232 is connected to both the first plate 231 and the third plate 233.

Specifically, the first plate 231, the second plate 232, and the third plate 233 may be connected by bonding. The first plate 231 and the third plate 233 may be made of a polyurethane composite material, so that the weight of the battery pack is reduced, and the first plate 231 and the third plate 233 may block a heat conduction path between the battery module 22 and the lower case 3, thereby increasing the heat insulation effect of the battery pack.

The second plate 232 is made of a metal material, so that the protection plate 23 has certain rigidity and strength to better protect the battery module 22. For example, the second plate 232 may be made of aluminum, which has better rigidity and strength and lighter weight, so as to further reduce the weight of the battery pack. Meanwhile, in order to further reduce the weight of the second plate body 232, a plurality of honeycomb holes may be opened on the second plate body 232, and the plurality of honeycomb holes penetrate through the second plate body 232 and are uniformly distributed on the second plate body 232.

In an alternative embodiment, referring to fig. 1, the present embodiment provides a battery pack, in which a plurality of bolt holes are formed in the edge of upper cover 11 and the edge of lower case 3, and the bolt holes in upper cover 11 and the bolt holes in lower case 3 are in one-to-one correspondence.

Specifically, the upper cover assembly 1 and the lower case 3 may be bolted together through bolt holes. And in order to increase the sealing performance of the whole battery pack, a sealing glue is also arranged at the joint of the upper cover 11 and the lower box body 3. And a part of the bolt holes is used for connecting the upper cover assembly 1 with the lower box body 3, and a part of the bolt holes is used for connecting the battery pack with the vehicle body. For example, when the upper cover assembly 1 and the lower case 3 are connected, every other bolt may be used for connection, and the remaining bolt holes not used for connecting the upper cover assembly 1 and the lower case 3 may be used for connection of the battery pack to the vehicle body.

Further, as shown in fig. 1, a reinforcing rib 32 is provided on a surface of the lower case 3 away from the upper cover assembly 1, and the strength of the lower case 3 can be further improved by the reinforcing rib 32, thereby improving the strength of the battery pack. In the embodiment of the present application, the reinforcing rib 32 is a part of the lower case 3, and specifically, a plurality of protrusions are formed on the surface of the lower case 3 as the reinforcing rib 32 by a stamping process. Of course, other structures may be provided as the reinforcing ribs 32, which will not be described herein.

Based on the same inventive concept, referring to fig. 5, the present embodiment discloses a vehicle body structure that includes any one of the battery packs as described above in the present embodiment, and that further includes a rocker beam 41 and a quarter gusset 42.

Specifically, the threshold beam 41 and the front side panel 42 are disposed on both sides of the vehicle body in the length direction, and the upper cover assembly 1 is fixedly connected to the threshold beam 41 and the front side panel 42 on both sides through bolts, so that the upper cover assembly 1 is connected to the vehicle body.

Based on the same inventive concept, the embodiment of the present application also provides a vehicle, which comprises the vehicle body structure as described in the embodiment of the present application.

Specifically, the vehicle may include a small passenger car, a medium passenger car, a large passenger car, a truck, and the like. Through setting up foretell automobile body structure, can alleviate the weight of battery package to guarantee the intensity and the rigidity of battery package, thereby increase the life of battery package.

Based on the same inventive concept, the embodiment of the present application discloses a method, which includes the steps as provided in the first embodiment of the present application.

It should be noted that, in the present specification, the embodiments are all described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments may be referred to each other.

It should also be noted that, in this document, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application. Moreover, relational terms such as "first" and "second" are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions or should not be construed as indicating or implying relative importance. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or terminal that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or terminal. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or terminal that comprises the element.

The technical solutions provided by the present application are described in detail above, and the principles and embodiments of the present application are described herein by using specific examples, which are only used to help understanding the present application, and the content of the present description should not be construed as limiting the present application. While various modifications of the illustrative embodiments and applications will be apparent to those skilled in the art based upon this disclosure, it is not necessary or necessary to exhaustively enumerate all embodiments, and all obvious variations and modifications can be resorted to, falling within the scope of the disclosure.

Claims

1. A battery pack, comprising:

the device comprises an upper cover assembly (1), a module assembly (2) and a lower box body (3), wherein the upper cover assembly (1) is connected with the lower box body (3), and the module assembly (2) is positioned in an accommodating space formed by the upper cover assembly (1) and the lower box body (3);

the upper cover assembly (1) comprises an upper cover (11), and a seat cross beam (12) and a reinforcing beam (13) which are arranged on the upper cover (11), and the upper cover assembly (1) is used as a vehicle body bottom plate and connected with a vehicle body of a vehicle;

at least one longitudinal beam (31) is arranged on the surface, facing the upper cover assembly (1), of the lower box body (3), the length direction of the longitudinal beam (31) is perpendicular to the length direction of the seat cross beam (12), and the longitudinal beam (31) is connected with the upper cover (11).

2. The battery pack according to claim 1, wherein:

the module assembly (2) comprises a liquid cooling plate (21), a battery module (22) and a protection plate (23);

the liquid cooling plate (21) is connected with the upper cover assembly (1), and the protection plate (23) is connected with the lower box body (3);

the battery module (22) is arranged between the liquid cooling plate (21) and the protection plate (23), and the battery module (22) is connected with the liquid cooling plate (21) and the protection plate (23) simultaneously.

3. The battery pack according to claim 2, wherein:

the protection plate (23) comprises a first plate body (231), a second plate body (232) and a third plate body (233), the second plate body (232) is located between the first plate body (231) and the third plate body (233), and the second plate body (232) is connected with the first plate body (231) and the third plate body (233) at the same time;

the second plate body (232) comprises a metallic material.

4. The battery pack according to claim 3, wherein:

a plurality of honeycomb holes are formed in the second plate body (232), and the honeycomb holes penetrate through the second plate body (232).

5. The battery pack according to claim 4, wherein:

the honeycomb holes are uniformly distributed on the second plate body (232).

6. The battery pack according to claim 2, wherein:

the upper cover (11) comprises an accommodating area (111), the accommodating area (111) is arranged in a protruding mode towards the direction far away from the module assembly (2) relative to the upper cover (11), and a control module of the battery module (22) is located in the accommodating area (111).

7. The battery pack according to claim 1, wherein:

and a sealant is arranged at the joint of the upper cover assembly (1) and the lower box body (3).

8. The battery pack according to any one of claims 1 to 7, wherein:

and a reinforcing rib (32) is arranged on the surface of the lower box body (3) deviating from the upper cover assembly (1).

9. A vehicle body structure characterized in that:

comprising a battery pack according to any one of claims 1-8, and a rocker beam (41) and a front side gusset (42);

the battery pack comprises an upper cover assembly (1), and the upper cover assembly (1) is connected with the threshold beam (41) and the front side wall reinforcing plate (42).

10. A vehicle, characterized in that:

comprising a vehicle body structure according to claim 9.