CN216213784U

CN216213784U - Lower shell and power battery pack with same

Info

Publication number: CN216213784U
Application number: CN202122675824.7U
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: 2021-11-03
Filing date: 2021-11-03
Publication date: 2022-04-05
Anticipated expiration: 2031-11-03

Abstract

The utility model provides a lower shell and a power battery pack with the same, wherein the lower shell comprises: the frame comprises a mounting beam and a plurality of boundary beams, the boundary beams jointly enclose a containing cavity, and two ends of the mounting beam are respectively connected with two opposite boundary beams; the adjusting beam is adjustably arranged on the frame, the adjusting beam is detachably connected with the mounting beam and the side beam respectively, the adjusting beam and the mounting beam are arranged in a staggered mode, and the accommodating cavity is divided into a plurality of mounting cavities for mounting the battery monomers by the adjusting beam and the mounting beam. Through the technical scheme that this application provided, can solve the battery monomer's of different models among the correlation technique size difference great, need design different forms the casing down and lead to the cost increase problem.

Description

Lower shell 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 and a power battery pack with the same.

Background

Be provided with the power battery package on the new energy automobile and provide the electric energy, a plurality of battery monomer interconnect constitution battery module, battery module fixes and constitutes the power battery package on the casing down, and the power battery package is fixed on new energy automobile's automobile body through casing down.

In the related art, the size difference of the battery cells of different models is large, and the lower housing of different forms needs to be designed, which increases the cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a lower shell and a power battery pack with the same, and aims to solve the problem that in the related technology, the size difference of battery monomers of different types is large, and the cost is increased due to the fact that lower shells of different types need to be designed.

According to an aspect of the present invention, there is provided a lower case including: the frame comprises a mounting beam and a plurality of boundary beams, the boundary beams jointly enclose a containing cavity, and two ends of the mounting beam are respectively connected with two opposite boundary beams; the adjusting beam is adjustably arranged on the frame, the adjusting beam is detachably connected with the mounting beam and the side beam respectively, the adjusting beam and the mounting beam are arranged in a staggered mode, and the accommodating cavity is divided into a plurality of mounting cavities for mounting the battery monomers by the adjusting beam and the mounting beam.

Further, the mounting beam extends in the width direction of the frame, and the adjustment beam extends in the length direction of the frame.

Furthermore, the lower shell further comprises a fastening seat, the adjusting beam is arranged on the mounting beam in an overlapping mode, and the fastening seat is arranged on the adjusting beam in a pressing mode and connected with the mounting beam and the adjusting beam.

Furthermore, the adjusting beam is provided with a notch, the mounting beam is inserted into the adjusting beam through the notch, and the fastening seat is pressed on the upper surface of the adjusting beam and is positioned above the notch.

Further, the lower shell further comprises a first mounting seat and a second mounting seat, and two ends of the adjusting beam are respectively detachably connected with the corresponding edge beam through the first mounting seat and the second mounting seat.

Furthermore, a groove is formed in the first mounting seat, a first protrusion is arranged at the first end of the adjusting beam, the adjusting beam is inserted into the groove through the protrusion, and the first mounting seat and the first protrusion are connected with the boundary beam.

Furthermore, a second end of the adjusting beam is provided with a second protrusion, the second protrusion is provided with a hollow structure, a convex hull is arranged on the second mounting seat, the convex hull is inserted into the hollow structure, a step is arranged on the boundary beam, the second mounting seat is connected with the step, and the second protrusion is erected on the second mounting seat and is connected with the convex hull.

Furthermore, the frame comprises four boundary beams, the four boundary beams are respectively a front boundary beam, a rear boundary beam and two side boundary beams, two ends of the mounting beam are respectively connected with the two side boundary beams, and two ends of the adjusting beam are respectively connected with the front boundary beam and the rear boundary beam.

Furthermore, the front edge beam, the rear edge beam and the mounting beam are all provided with a plurality of mounting positions, and the adjusting beam is detachably arranged at the mounting positions.

According to another aspect of the present invention, there is provided a power battery pack including: the battery module comprises a plurality of battery monomers; the lower casing, battery monomer install in the installation cavity of casing down, and the casing is the lower casing that above-mentioned provided down.

By applying the technical scheme, the frame of the lower shell comprises the mounting beam and the plurality of boundary beams, the plurality of boundary beams jointly enclose the accommodating cavity, the position-adjustable adjusting beam is arranged on the frame and is respectively connected with the mounting beam and the boundary beams, the adjusting beam and the mounting beams are arranged in a staggered mode, the accommodating cavity is divided into a plurality of mounting cavities for mounting the single batteries through the adjusting beam and the mounting beams, the adjusting beam can be detached and the position of the adjusting beam can be adjusted, the size of the mounting cavities can be adjusted by detaching and adjusting the position of the adjusting beam by adopting the lower shell with the structure, the lower shell can meet the requirements of assembling of the single batteries with different models, the adaptability is strong, and the cost is saved.

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 provided by an embodiment of the present invention;

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

FIG. 3 shows a partial enlarged view at B in FIG. 1;

FIG. 4 shows a partial enlarged view at C in FIG. 1;

fig. 5 is an assembly view illustrating a lower case for mounting a battery module of 590mm according to an embodiment of the present invention;

fig. 6 illustrates an assembly view of a lower case for mounting a 355mm battery module, which is provided according to an embodiment of the present invention.

Wherein the figures include the following reference numerals:

10. a frame; 11. mounting a beam; 12. a boundary beam; 121. a step; 122. a front edge beam; 123. a rear edge beam; 124. a side beam; 13. an accommodating chamber; 14. a mounting cavity; 15. an installation position;

20. adjusting the beam; 21. a notch; 22. a first protrusion; 23. a second protrusion;

30. a fastening seat;

40. a first mounting seat; 41. a groove;

50. a second mounting seat; 51. and (4) convex hull.

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 6, an embodiment of the present invention provides a lower housing, where the lower housing includes a frame 10 and an adjusting beam 20, the frame 10 includes a mounting beam 11 and a plurality of boundary beams 12, the boundary beams 12 jointly enclose a receiving cavity 13, two ends of the mounting beam 11 are respectively connected to two opposite boundary beams 12, the adjusting beam 20 is adjustably disposed on the frame 10, the adjusting beam 20 is detachably connected to the mounting beam 11 and the boundary beams 12, the adjusting beam 20 and the mounting beam 11 are arranged in a staggered manner, and the receiving cavity 13 is divided into a plurality of mounting cavities 14 for mounting battery cells by the adjusting beam 20 and the mounting beam 11.

By applying the technical scheme of the utility model, the frame 10 of the lower shell comprises the mounting beam 11 and the plurality of boundary beams 12, the plurality of boundary beams 12 jointly enclose the accommodating cavity 13, the position-adjustable adjusting beam 20 is arranged on the frame 10, the adjusting beam 20 is respectively connected with the mounting beam 11 and the boundary beams 12, the adjusting beam 20 and the mounting beam 11 are arranged in a staggered manner, the accommodating cavity 13 is divided into a plurality of mounting cavities 14 for mounting single batteries through the adjusting beam 20 and the mounting beam 11, and the adjusting beam 20 can be detached and adjusted in position.

The frame 10 may include 4 side beams 12, or may include 6 side beams 12, as long as the receiving cavity 13 surrounded by the side beams 12 can be used for mounting the battery module. In this embodiment, the frame 10 includes 4 side beams 12.

Compared with the existing welding lower shell, the lower shell provided by the embodiment reduces welding areas, adopts a cold connection mode to replace a welding mode, and can enable the lower shell to deform little and have high precision. And, the mounting beam 11 is favorable to enhancing the structural strength of the frame 10, so that the connection of the frame 10 is more stable, the mounting beam 11 is provided with a connection structure connected with the new energy automobile body, for example, a connection through hole, and a bolt penetrates through the connection through hole and is connected with the automobile body, so that the lower shell can be fixed.

As shown in fig. 1, the installation beam 11 extends in the width direction of the frame 10, and the adjustment beam 20 extends in the length direction of the frame 10. By adopting the structure, more battery cells can be favorably arranged in the installation cavity 14 separated by the adjusting beam 20 and the installation beam 11, the utilization rate of the internal space of the power battery pack is improved, and the energy density of the power battery pack is further improved.

As shown in fig. 1 and 3, the lower housing further includes a fastening seat 30, the adjusting beam 20 is overlapped on the mounting beam 11, and the fastening seat 30 is pressed on the adjusting beam 20 and connected with the mounting beam 11 and the adjusting beam 20. Adopt fastening seat 30 to press and establish adjusting beam 20 to utilize fastening seat 30 to connect the mode of installation roof beam 11 and adjusting beam 20, have the advantage of connection structure simply, the assembly of being convenient for.

As shown in fig. 3, the adjusting beam 20 has a notch 21, the mounting beam 11 is inserted into the adjusting beam 20 through the notch 21, and the fastening seat 30 is pressed on the upper surface of the adjusting beam 20 and is located above the notch 21. Adopt installation roof beam 11 to insert through breach 21 and locate adjusting beam 20, can make installation roof beam 11 and adjusting beam 20 form first way and be connected, adopt fastening seat 30 to press and establish adjusting beam 20 to utilize fastening seat 30 to connect installation roof beam 11 and adjusting beam 20 and in order to form the second and connect, and then fix a position adjusting beam 20, can also make installation roof beam 11 and adjusting beam 20's connection more firm.

As shown in fig. 1, 2 and 4, the lower housing further includes a first mounting seat 40 and a second mounting seat 50, and both ends of the adjusting beam 20 are detachably connected to the corresponding side beams 12 through the first mounting seat 40 and the second mounting seat 50, respectively. The first mounting seat 40 and the second mounting seat 50 are adopted to detachably connect the adjusting beam 20 with the corresponding edge beam 12, and the adjusting device has the advantages of simple connecting structure and convenience in assembly.

As shown in fig. 1 and 2, a groove 41 is provided on the first mounting seat 40, a first protrusion 22 is provided at a first end of the adjusting beam 20, the adjusting beam 20 is inserted into the groove 41 through the first protrusion 22, and both the first mounting seat 40 and the first protrusion 22 are connected to the side beam 12. Through first protrusion 22 is inserted in groove 41, can utilize first mount pad 40 to form the location to the first end of adjusting beam 20 to through first mount pad 40 and first protrusion 22 all be connected with boundary beam 12, can make first mount pad 40 only form the location to the first end of adjusting beam 20, the location structure and the connection structure phase separation of adjusting beam 20 are convenient for the assembly of adjusting beam 20.

As shown in fig. 1 and 4, the second end of the adjusting beam 20 is provided with a second protrusion 23, the second protrusion 23 is provided with a hollow structure, the second mounting seat 50 is provided with a convex hull 51, the convex hull 51 is inserted into the hollow structure, the side beam 12 is provided with a step 121, the second mounting seat 50 is connected with the step 121, and the second protrusion 23 is erected on the second mounting seat 50 and connected with the convex hull 51. The convex hull 51 is inserted into the hollow structure of the second protrusion 23, the second protrusion 23 is connected with the convex hull of the second mounting seat, and the second mounting seat is connected with the step 121 of the edge beam 12, so that the connecting structure is more stable.

It should be noted that, steps are provided on both sides of the adjusting beam 20, and both the steps of the adjusting beam 20 and the steps 121 of the side beam 12 are used for supporting the single battery.

As shown in fig. 1 and 5, the frame 10 includes four side beams 12, the four side beams 12 are a front side beam 122, a rear side beam 123 and two side beams 124, two ends of the mounting beam 11 are connected to the two side beams 124, and two ends of the adjusting beam 20 are connected to the front side beam 122 and the rear side beam 123. By adopting the structure, the structure of the frame 10 is more compact and more standard, which is beneficial to improving the space utilization rate of the installation cavity 14, and further improving the energy density of the power battery pack.

Specifically, in the present embodiment, the front side beam 122, the rear side beam 123, the two side beams 124, the mounting beam 11, and the adjusting beam 20 are made of profiles, which has the advantages of light weight and high strength.

As shown in fig. 2 to 4, the front side member 122, the rear side member 123, and the mounting member 11 are each provided with a plurality of mounting locations 15, and the adjusting member 20 is detachably provided to the mounting locations 15. By providing mounting locations 15, positioning and assembly of the adjustable beam 20 is facilitated. In the present embodiment, the front side member 122, the rear side member 123, and the mounting beams 11 are each provided with three mounting locations 15, and the lower case can accommodate battery modules constructed of battery cells of both 355mm and 590mm length sizes.

In this embodiment, each mounting location 15 comprises a plurality of positioning holes, and the adjustment beam 20 is connected to the frame 10 by means of the positioning holes and bolts of the mounting location 15.

The utility model further provides a power battery pack, which comprises a battery module and a lower shell, wherein the battery module comprises a plurality of battery single cells, the battery single cells are mounted in the mounting cavity 14 of the lower shell, and the lower shell is the lower shell provided above. By using the power battery pack provided by the embodiment, the size of the mounting cavity 14 can be adjusted by detaching and adjusting the position of the adjusting beam 20, so that the condition that battery units of different sizes and models are mounted on the lower shell can be met, and the cost is saved.

In the present embodiment, battery cells of two length sizes of 355mm and 590mm are used to construct a battery module, and the lower case of the power battery pack can be adapted to the installation of the battery modules of the two sizes, wherein fig. 5 is a lower case for installing a battery module of 590mm, and fig. 6 is a lower case for installing a battery module of 355 mm.

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

1) the size of the mounting cavity 14 can be adjusted by detaching and adjusting the position of the adjusting beam 20, so that the lower shell can meet the assembly requirements of battery monomers of different models, the adaptability is strong, and the cost is saved;

2) the boundary beam 12, the mounting beam 11 and the adjusting beam 20 are all made of section bars, and have the advantages of light weight and high strength;

3) the mounting beam 11 is inserted into the adjusting beam 20 through the gap 21, so that the mounting beam 11 and the adjusting beam 20 form a first connection, the adjusting beam 20 is pressed by the fastening seat 30, the mounting beam 11 and the adjusting beam 20 are connected by the fastening seat 30 to form a second connection, the adjusting beam 20 is positioned, and the mounting beam 11 and the adjusting beam 20 can be connected more stably;

4) the first mounting seat 40 and the second mounting seat 50 are adopted to detachably connect the adjusting beam 20 with the corresponding edge beam 12, so that the adjusting device has the advantages of simple connecting structure and convenience in assembly;

5) installation roof beam 11 extends along the width direction of frame 10, and regulation roof beam 20 extends along the length direction of frame 10, can be favorable to being adjusted roof beam 20 and installation roof beam 11 and become more arranging battery monomer by the installation cavity 14 that separates into, improves the inside space utilization of power battery package, and then improves the energy density of power battery package.

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, comprising:

the frame (10) comprises a mounting beam (11) and a plurality of boundary beams (12), the boundary beams (12) jointly enclose an accommodating cavity (13), and two ends of the mounting beam (11) are respectively connected with the two opposite boundary beams (12);

adjust roof beam (20), the position sets up adjustably on frame (10), adjust roof beam (20) respectively with installation roof beam (11) with boundary beam (12) can be dismantled and be connected, adjust roof beam (20) with installation roof beam (11) crisscross setting, adjust roof beam (20) with installation roof beam (11) will hold chamber (13) and separate for a plurality of installation cavity (14) that are used for installing the battery monomer.

2. The lower case according to claim 1, wherein the mounting beam (11) extends in a width direction of the frame (10), and the adjusting beam (20) extends in a length direction of the frame (10).

3. The lower shell according to claim 1, characterized in that it further comprises a fastening seat (30), the adjusting beam (20) being bridged on the mounting beam (11), the fastening seat (30) being pressed on the adjusting beam (20) and being connected with the mounting beam (11) and the adjusting beam (20).

4. The lower shell according to claim 3, wherein the adjusting beam (20) has a notch (21), the mounting beam (11) is inserted into the adjusting beam (20) through the notch (21), and the fastening seat (30) is pressed on the upper surface of the adjusting beam (20) and is located above the notch (21).

5. The lower case of claim 1, further comprising a first mounting seat (40) and a second mounting seat (50), wherein both ends of the adjusting beam (20) are detachably connected to the corresponding edge beam (12) through the first mounting seat (40) and the second mounting seat (50), respectively.

6. The lower shell body as claimed in claim 5, wherein a groove (41) is arranged on the first mounting seat (40), a first protrusion (22) is arranged at a first end of the adjusting beam (20), the adjusting beam (20) is inserted into the groove (41) through the first protrusion (22), and the first mounting seat (40) and the first protrusion (22) are both connected with the edge beam (12).

7. The lower shell body according to claim 5, wherein a second protrusion (23) is arranged at a second end of the adjusting beam (20), the second protrusion (23) is provided with a hollow structure, a convex hull (51) is arranged on the second mounting seat (50), the convex hull (51) is inserted into the hollow structure, a step (121) is arranged on the side beam (12), the second mounting seat (50) is connected with the step (121), and the second protrusion (23) is erected on the second mounting seat (50) and is connected with the convex hull (51).

8. The lower shell according to any one of claims 1 to 7, wherein the frame (10) comprises four side beams (12), the four side beams (12) are a front side beam (122), a rear side beam (123) and two side beams (124), the two ends of the mounting beam (11) are respectively connected with the two side beams (124), and the two ends of the adjusting beam (20) are respectively connected with the front side beam (122) and the rear side beam (123).

9. The lower shell according to claim 8, wherein the front edge beam (122), the rear edge beam (123) and the mounting beam (11) are each provided with a plurality of mounting locations (15), the adjustment beam (20) being detachably provided to the mounting locations (15).

10. A power battery pack, comprising:

the battery module comprises a plurality of battery monomers;

a lower case to which the battery cell is mounted in a mounting cavity (14) of the lower case, the lower case being the lower case of any one of claims 1 to 9.