CN216213840U

CN216213840U - Lower shell assembly and power battery pack with same

Info

Publication number: CN216213840U
Application number: CN202122548498.3U
Authority: CN
Inventors: 李恒旭; 孙永刚; 闵忠国; 万家明; 吴清平; 曹斌
Original assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Current assignee: Neusoft Reach Automotive Technology Shenyang Co Ltd
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-04-05
Anticipated expiration: 2031-10-21

Abstract

The utility model provides a lower shell assembly and a power battery pack with the same, wherein the lower shell assembly comprises: a battery information collector; the battery module comprises a lower shell, a plurality of connecting rods and a plurality of connecting rods, wherein the lower shell comprises a plurality of mounting beams which jointly enclose a mounting cavity for assembling the battery module; the mounting beam is provided with a hollow structure, an opening communicated with the hollow structure is formed in the side wall of the mounting beam, the opening faces the mounting cavity, and at least part of the battery information collector extends into the hollow structure through the opening. Through the technical scheme that this application provided, can solve the battery information collector among the correlation technique and occupy the inner space of power battery package, be unfavorable for the problem that the energy density of power battery package promotes.

Description

Lower shell assembly and power battery pack with same

Technical Field

The utility model relates to the technical field of power batteries, in particular to a lower shell assembly and a power battery pack with the same.

Background

The new energy automobile is provided with a power battery pack for providing electric energy, the battery module is fixed on the lower shell to form the power battery pack, the power battery pack is provided with a battery management system, and the battery management system monitors various parameters of the power battery pack in real time to ensure the safety of the new energy automobile. The battery management system collects various parameters of the power battery pack through the battery information collector.

In the correlation technique, the battery information collector needs to design a special bracket to be fixed inside the power battery pack, and the arrangement mode enables the battery information collector to occupy the inner space of the power battery pack, which is not beneficial to improving the energy density of the power battery pack.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lower shell assembly and a power battery pack with the same, and aims to solve the problem that a battery information collector in the related technology occupies the inner space of the power battery pack and is not beneficial to improving the energy density of the power battery pack.

According to an aspect of the present invention, there is provided a lower housing assembly for assembling a battery module, the lower housing assembly including: a battery information collector; the battery module comprises a lower shell, a plurality of connecting rods and a plurality of connecting rods, wherein the lower shell comprises a plurality of mounting beams which jointly enclose a mounting cavity for assembling the battery module; the mounting beam is provided with a hollow structure, an opening communicated with the hollow structure is formed in the side wall of the mounting beam, the opening faces the mounting cavity, and at least part of the battery information collector extends into the hollow structure through the opening.

Further, battery information collector includes the shell and sets up the PCB subassembly in the shell, and the shell includes the base member and sets up the convex closure in one side of base member, and the convex closure stretches into hollow structure through the opening.

Further, the lower shell assembly further comprises a sealing structure, the base body is connected with the side wall of the mounting beam, and the sealing structure is arranged between the side wall of the mounting beam and the base body.

Further, the sealing structure comprises a sealing strip, and the sealing strip is arranged around the periphery of the opening.

Further, the width dimension of the base body is larger than the width dimension of the opening, and the width dimension of the base body is smaller than or equal to the width dimension of the mounting beam.

Further, the lower shell assembly further comprises a fastener, a mounting hole is formed in the side wall of the mounting beam and located on the outer side of the opening, and the base body is connected with the mounting beam through the fastener.

Further, one side of the base body facing the installation cavity is provided with a wiring harness outlet.

Further, the opening extends in a length direction of the mounting beam.

Further, the mounting beam is made of a section bar.

According to another aspect of the present invention, there is provided a power battery pack including: a battery module; casing subassembly down, battery module assembly casing subassembly's installation intracavity under, casing subassembly's battery information collector is connected with the battery module electricity down, and casing subassembly is the casing subassembly down that the aforesaid provided down.

By applying the technical scheme of the utility model, the opening is formed in one side, facing the mounting cavity, of the mounting beam of the lower shell, the opening is communicated with the hollow structure of the mounting beam, at least part of the battery information collector extends into the hollow structure of the mounting beam through the opening, the battery information collector can be accommodated by the hollow structure, a special support of the battery information collector arranged in the mounting cavity can be omitted, the internal space of the mounting cavity is further saved, and the energy density of the power battery pack is favorably improved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 illustrates an exploded view of a lower housing assembly provided by an embodiment of the present invention;

FIG. 2 shows a partial enlarged view at A in FIG. 1;

fig. 3 is an exploded view illustrating a mounting beam and a battery information collector of a lower housing assembly according to an embodiment of the present invention;

FIG. 4 illustrates an assembly view of a lower housing assembly provided by an embodiment of the present invention;

fig. 5 shows a schematic structural diagram of the battery information collector in fig. 1.

Wherein the figures include the following reference numerals:

10. a battery information collector; 11. a housing; 111. a substrate; 1111. a wire harness outlet; 112. a convex hull;

20. a lower housing; 21. mounting a beam; 211. a hollow structure; 212. an opening; 213. mounting holes; 22. a mounting cavity;

30. a sealing structure; 31. a sealing strip;

40. a fastener.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. 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 invention.

As shown in fig. 1 to 5, an embodiment of the present invention provides a lower housing assembly for assembling a battery module. Lower casing subassembly includes battery information collector 10 and lower casing 20, and lower casing 20 includes a plurality of installation roof beams 21, and a plurality of installation roof beams 21 enclose into the installation cavity 22 that is used for assembling battery module jointly. Wherein, the mounting beam 21 has a hollow structure 211, an opening 212 communicated with the hollow structure 211 is provided on a side wall of the mounting beam 21, the opening 212 is disposed towards the mounting cavity 22, and at least a part of the battery information collector 10 extends into the hollow structure 211 through the opening 212.

By applying the technical scheme of the utility model, the opening 212 is arranged on one side, facing the mounting cavity 22, of the mounting beam 21 of the lower shell 20, the opening 212 is communicated with the hollow structure 211 of the mounting beam 21, at least part of the battery information collector 10 extends into the hollow structure 211 of the mounting beam 21 through the opening 212, the battery information collector 10 can be accommodated by the hollow structure 211, a special support of the battery information collector 10 arranged in the mounting cavity 22 can be omitted, the internal space of the mounting cavity 22 is saved, and the energy density of the power battery pack is improved. Moreover, the special bracket of the battery information collector 10 arranged in the mounting cavity 22 is eliminated, so that the weight of the power battery pack is reduced.

As shown in fig. 1 and 5, the battery information collector 10 includes a housing 11 and a PCB assembly disposed inside the housing 11, the housing 11 includes a base 111 and a convex hull 112 disposed on one side of the base 111, and the convex hull 112 extends into the hollow structure 211 through an opening 212. By arranging the PCB assembly inside the housing 11, the PCB assembly can be protected by the housing 11. Protruding convex hull 112 extends into hollow structure 211, and can reduce the internal space of installation cavity 22 occupied by battery information collector 10.

In the present embodiment, the PCB assembly includes a PCB board and an electronic component disposed on the PCB board. The collection of data such as temperature, pressure, voltage of power battery package can be realized through the PCB subassembly.

It should be noted that the housing 11 may be made of an aluminum alloy material, and may also be made of a plastic material.

As shown in fig. 2, the lower housing assembly further includes a sealing structure 30, a base 111 is connected to a sidewall of the mounting beam 21, and the sealing structure 30 is disposed between the sidewall of the mounting beam 21 and the base 111. By adopting the sealing structure 30, when water enters the hollow structure 211 of the mounting beam 21, the water directly enters the interior of the battery information collector 10 or enters the interior of the power battery pack, so that the waterproof performance of the power battery pack can be ensured while the energy density of the power battery pack is improved.

In the present embodiment, the lower housing assembly is mounted on the body of the new energy automobile, and when water enters the hollow structure 211 of the mounting beam 21, the water refers to water entering the hollow structure 211 of the mounting beam 21 from the outside of the new energy automobile.

As shown in fig. 2, the sealing structure 30 includes a sealing strip 31, and the sealing strip 31 is provided around the periphery of the opening 212. The sealing strip 31 is arranged between the side wall of the mounting beam 21 and the base 111, so that the sealing device has the advantages of high sealing reliability and low cost. Specifically, the seal 31 is an annular seal.

It should be noted that the sealing structure 30 is not limited to the form of the sealing strip 31, and may also be a sealing structure in which a sealing glue or a sealing boss is fitted with the sealing groove. For example, a sealing groove is formed in the sidewall of the mounting beam 21, a sealing boss is formed on the base 111, and after the battery information collector 10 is assembled to the mounting beam 21, the sealing boss extends into the sealing groove, thereby achieving sealing.

In the present embodiment, the width dimension of the base 111 is larger than the width dimension of the opening 212, and the width dimension of the base 111 is smaller than or equal to the width dimension of the mounting beam 21. By adopting the structure, the base body 111 can be abutted against the side wall of the mounting beam 21, so that the assembly of the base body 111 is facilitated, and meanwhile, the base body 111 does not extend out of the side wall of the mounting beam 21 in the width direction, so that the damage to the base body 111 is avoided.

The width of the base 111 refers to the dimension of the base 111 in the vertical direction in fig. 5, and the length of the base 111 refers to the dimension of the base 111 in the horizontal direction in fig. 5.

In the present embodiment, the length dimension of the base 111 is greater than the length dimension of the opening 212, so that the base 111 is more firmly mounted on the mounting beam 21.

As shown in fig. 2, the lower housing assembly further includes a fastener 40, a mounting hole 213 is formed on a side wall of the mounting beam 21, the mounting hole 213 is located outside the opening 212, and the base 111 is connected to the mounting beam 21 by the fastener 40. The mode that the fastener 40 is adopted to connect the base body 111 with the mounting beam 21 has the advantages of simple connecting structure and convenient installation.

In the present embodiment, the fastener 40 includes a blind rivet nut and a screw.

As shown in fig. 2 and 5, a harness outlet 1111 is provided on a side of the base 111 facing the mounting chamber 22. Can carry out the electricity with PCB subassembly and battery module through pencil export 1111 and be connected, and then gather each item parameter of battery module.

In this embodiment, the harness outlet 1111 is provided near the control system of the power battery pack to facilitate the arrangement of the harness.

As shown in fig. 2, the opening 212 extends along the length of the mounting beam 21. The opening 212 is adapted to the shape of the battery information collector 10, so as to facilitate the installation of the battery information collector 10.

In the present embodiment, the mounting beam 21 is made of a profile. The mounting beam 21 made of the sectional material not only can enable the lower shell 20 to have higher structural strength, but also is beneficial to reducing the weight of the power battery pack.

Still another embodiment of the present invention provides a power battery pack, which includes a battery module and a lower housing assembly, wherein the battery module is assembled in the mounting cavity 22 of the lower housing assembly, the battery information collector 10 of the lower housing assembly is electrically connected with the battery module, and the lower housing assembly is the lower housing assembly provided above. By applying the power battery pack provided by the embodiment, the special bracket of the battery information collector 10 arranged in the installation cavity 22 can be omitted, so that the internal space of the installation cavity 22 is saved, and the energy density of the power battery pack is improved. Moreover, the special bracket of the battery information collector 10 arranged in the mounting cavity 22 is eliminated, so that the weight of the power battery pack is reduced.

In this embodiment, power battery package still includes the battery management module, and the battery management module detects each item parameter of battery module, and the battery management module includes battery information collector, and battery information collector is connected with the battery module electricity.

The lower shell assembly and the power battery pack with the same have the following beneficial effects:

1) at least part of the battery information collector 10 extends into the hollow structure 211 of the mounting beam 21 through the opening 212, the battery information collector 10 can be accommodated by the hollow structure 211, and a special support of the battery information collector 10 arranged in the mounting cavity 22 can be omitted, so that the internal space of the mounting cavity 22 is saved, and the energy density of the power battery pack is improved;

2) at least part of the battery information collector 10 extends into the hollow structure 211 of the mounting beam 21 through the opening 212, so that a special bracket of the battery information collector 10 arranged in the mounting cavity 22 is eliminated, and the weight of the power battery pack is reduced;

3) by adopting the sealing structure 30, when water enters the hollow structure 211 of the mounting beam 21, the water directly enters the battery information collector 10 or enters the power battery pack, so that the energy density of the power battery pack can be improved, and the waterproof performance of the power battery pack can be ensured;

4) the mode that the fastener 40 is adopted to connect the base body 111 with the mounting beam 21 has the advantages of simple connecting structure and convenient installation.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A lower housing assembly for assembling a battery module, the lower housing assembly comprising:

a battery information collector (10);

the lower shell (20), the lower shell (20) comprises a plurality of mounting beams (21), and the mounting beams (21) jointly enclose a mounting cavity (22) for assembling the battery module;

the mounting beam (21) is provided with a hollow structure (211), an opening (212) communicated with the hollow structure (211) is formed in the side wall of the mounting beam (21), the opening (212) faces the mounting cavity (22), and at least part of the battery information collector (10) extends into the hollow structure (211) through the opening (212).

2. The lower housing assembly according to claim 1, wherein the battery information collector (10) comprises a housing (11) and a PCB assembly disposed inside the housing (11), the housing (11) comprises a base (111) and a convex hull (112) disposed at one side of the base (111), and the convex hull (112) protrudes into the hollow structure (211) through the opening (212).

3. The lower housing assembly of claim 2, further comprising a sealing structure (30), the base (111) being connected to a sidewall of the mounting beam (21), the sealing structure (30) being disposed between the sidewall of the mounting beam (21) and the base (111).

4. A lower housing assembly according to claim 3, wherein the sealing structure (30) comprises a sealing strip (31), the sealing strip (31) being provided around the periphery of the opening (212).

5. The lower housing assembly of claim 3, wherein a width dimension of the base (111) is greater than a width dimension of the opening (212), the width dimension of the base (111) being less than or equal to the width dimension of the mounting beam (21).

6. The lower housing assembly according to claim 3, further comprising a fastening member (40), wherein a mounting hole (213) is formed in a side wall of the mounting beam (21), the mounting hole (213) is located outside the opening (212), and the base (111) is connected to the mounting beam (21) by the fastening member (40).

7. A lower housing assembly according to claim 3, characterized in that the side of the base body (111) facing the mounting cavity (22) is provided with a wire harness outlet (1111).

8. A lower housing assembly according to any one of claims 1 to 7, wherein the opening (212) extends along the length of the mounting beam (21).

9. A lower housing assembly according to any one of claims 1 to 7, characterized in that the mounting beam (21) is made of a profile.

10. A power battery pack, comprising:

a battery module;

the battery module assembly is in casing assembly's installation cavity (22) down, casing assembly's battery information collector (10) is connected with the battery module electricity down, casing assembly is the lower casing assembly of any one of claims 1 to 9 down.