CN219591574U

CN219591574U - Profile structure, battery pack box assembly and battery pack

Info

Publication number: CN219591574U
Application number: CN202321272024.3U
Authority: CN
Inventors: 高方龙
Original assignee: Eve Energy Co Ltd
Current assignee: Eve Energy Co Ltd
Priority date: 2023-05-23
Filing date: 2023-05-23
Publication date: 2023-08-25
Anticipated expiration: 2033-05-23

Abstract

The utility model discloses a section bar structure, a battery pack box assembly and a battery pack, wherein the battery pack comprises the battery pack box assembly, the battery pack box assembly comprises the section bar structure, the section bar structure comprises a first frame, a second frame and a third frame, the first frame and the second frame are respectively arranged on two opposite sides of the third frame, the first frame and the second frame are respectively close to two ends of the third frame, when the first frame is impacted by external force, the first frame is firstly stressed by the external force to buffer extrusion force to the third frame and the second frame, the arrangement of the first frame is equivalent to the increase of the length outside the battery box, so that the section bar collapsing distance when the box is stressed and deformed is increased, the aim of locally reinforcing a vehicle body and meeting the mechanical safety performance is fulfilled, the weight of the battery pack is not excessively increased, the light weight is realized, the energy consumption of the vehicle body is reduced, and the endurance mileage is increased.

Description

Profile structure, battery pack box assembly and battery pack

Technical Field

The utility model relates to the technical field of battery packs, in particular to a section bar structure, a battery pack box assembly and a battery pack.

Background

With the rise of new energy automobiles in recent years, the design in the new energy automobile industry is also developed towards light weight, high energy density, high integration and the like, and the reliability and mechanical safety performance of the battery of the new energy automobile as the power output of the whole automobile should be considered as important. The battery pack of the new energy automobile is generally installed on the automobile body chassis and is close to the automobile body chassis boundary beam, when the whole automobile side column collides, the side part of the battery pack is subjected to external extrusion force, and the battery pack is easy to deform and damage due to force transmission.

Therefore, in the prior art, the new energy automobile field in China generally uses an MTP structure technology, the design of a battery pack box body and an upper cover is simplified, so that the structural strength of the battery pack box body is enhanced, but the technology can increase the weight of the battery pack, so that the quality of the whole automobile is increased, the energy consumption corresponding to the whole automobile is increased, the weight of the box body cannot be reduced, and the strength and the rigidity of the battery pack are poor for the national standard and test requirements of the whole automobile, and the frame is required to play a certain role in protecting the battery pack, so that the safety is poor.

Disclosure of Invention

In order to solve the defects in the prior art, the utility model provides the profile structure, the battery pack box assembly and the battery pack, when a vehicle body is impacted by a side column or similar related impacts, the vehicle body chassis can be applied with a reinforced reverse acting force, so that the vehicle body is locally reinforced, the purpose of mechanical safety performance is met, the weight of the battery pack is not excessively increased, and the purposes of light weight, reduced vehicle body energy consumption and increased endurance mileage are realized.

In a first aspect, the present utility model provides a profile structure for supporting a battery pack, including a first frame, a second frame, and a third frame, where the first frame and the second frame are respectively disposed on opposite sides of the third frame, and the first frame and the second frame are respectively adjacent to two ends of the third frame.

Through so setting, when receiving external force striking, first frame receives external force at first to the buffer is to the extrusion force of third frame and second frame, and the setting of first frame is equivalent to increasing the length outside the battery box, thereby has increased the section bar when the box atress deformation and has collapsed the distance, thereby reaches local reinforcement automobile body, satisfies mechanical safety performance's purpose, and can not excessively increase the weight of battery package, realizes the lightweight, reduces the automobile body energy consumption, increases the continuation of journey mileage.

According to a preferred embodiment, the first frame further comprises a first rib and a second rib, a cavity is formed in the first frame, one of the first rib and the second rib is arranged in the horizontal direction, the other rib is arranged in the vertical direction, the first rib and the second rib are arranged in the cavity in a crossing mode, and the cavity is divided into a plurality of buffer cavities.

According to a preferred embodiment, third ribs are arranged in the second frame and the third frame, the third ribs are arranged in the horizontal direction, and the thickness of the third ribs is larger than that of the second ribs.

According to a preferred embodiment, the thickness of the second rib is defined as W2, and the thickness of the third rib is defined as W3, wherein W3 is greater than or equal to W2.

According to a preferred embodiment, the first frame and the second frame and/or the third frame and the second frame are/is provided with reinforcing ribs, and the structure is arranged, so that the force transmission path can be optimized, and the better supporting effect can be achieved for each cavity rib position of the profile.

According to a preferred embodiment, the vehicle further comprises a locating pin and/or a sleeve bushing provided to the first frame, the locating pin and/or the sleeve bushing being for connection with a vehicle body.

In a second aspect, the present utility model also provides a battery pack case assembly comprising the profile structure and a case frame as described above, the first and second frames of the profile structure being at least partially disposed within the case frame.

According to a preferred embodiment, the box comprises a box body frame, a bottom guard plate and a liquid cooling plate, wherein the box body frame and the bottom guard plate enclose a containing cavity, and the liquid cooling plate is arranged in the containing cavity.

According to a preferred embodiment, the device further comprises a sealing ring, wherein the sealing ring is arranged between the box body frame and the bottom guard plate.

In a third aspect, the present utility model also provides a battery pack comprising a battery pack case assembly as described above.

In summary, the profile structure, the battery pack box assembly and the battery pack provided by the utility model have at least the following technical effects:

the battery pack comprises a battery pack box assembly, the battery pack box assembly comprises a section bar structure, the section bar structure comprises a first frame, a second frame and a third frame, the first frame and the second frame are respectively arranged on two opposite sides of the third frame, the first frame and the second frame are respectively close to two ends of the third frame, when the battery pack is impacted by external force, the first frame is firstly subjected to the external force so as to buffer extrusion force to the third frame and the second frame, the length of the outside of the battery box body is increased by setting the first frame, so that the section bar collapsing distance when the box body is stressed and deformed is increased, the aim of locally strengthening a vehicle body is fulfilled, the mechanical safety performance is fulfilled, the weight of the battery pack is not excessively increased, the light weight is realized, the energy consumption of the vehicle body is reduced, and the endurance mileage is increased.

Drawings

Fig. 1 is a schematic view of a first angle of a profile structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a second angle of a profile structure according to an embodiment of the present utility model;

FIG. 3 is a third schematic view of a profile structure according to an embodiment of the present utility model;

fig. 4 is a schematic view illustrating a first angle of a battery pack case assembly according to an embodiment of the present utility model;

fig. 5 is a second angular schematic view of a battery pack case assembly structure according to an embodiment of the utility model.

Wherein the reference numerals have the following meanings:

1. a first frame; 2. a second frame; 3. a third frame; 4. a first diagonal rib; 5. second inclined ribs; 6. a positioning pin; 7. a sleeve bushing; 8. a box frame; 9. an inner support beam; 10. a liquid cooling plate; 11. a seal ring; 12. a bottom guard plate; 13. a profile structure; 111. a first rib; 121. second ribs; 131. a bottom wall; 21. third ribs; 22. a housing wall.

Detailed Description

For a better understanding and implementation, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be noted that, if the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. are referred to, the positional relationship is based on the positional relationship shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly specified or limited otherwise; the term "plurality" refers to two or more than two; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, references to "the/the" object or "an" object are likewise intended to mean one of a possible plurality of such objects.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model; the terms "comprising" and "having" and any variations thereof in the description of the utility model and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

Further, in the description of the present utility model, it should be understood that the terms "upper", "lower", "inner", "outer", and the like are described with reference to the angle shown in the drawings, and should not be construed as limiting the specific embodiments. It will also be understood that in the context of an element or feature being connected to another element(s) "upper," "lower," or "inner," "outer," it can be directly connected to the other element(s) "upper," "lower," or "inner," "outer," or indirectly connected to the other element(s) "upper," "lower," or "inner," "outer" via intervening elements.

Referring to fig. 1, the present utility model firstly discloses a profile structure 13 for supporting a battery pack, which comprises a first frame 1, a second frame 2 and a third frame 3, wherein the first frame 1 and the second frame 2 are respectively arranged at two opposite sides of the third frame 3, and the first frame 1 and the second frame 2 are respectively close to two ends of the third frame 3.

Because first frame 1 is protruding in the horizontal direction in fig. 1 in third frame 3, when receiving the external force striking from the level right, first frame 1 receives external force at first to the buffer is to the extrusion force of third frame 3 and second frame 2, and the setting of first frame 1 is equivalent to increasing the length outside the battery box, thereby has increased the section bar time of box atress deformation and has collapsed the distance, thereby reaches local reinforcement automobile body, satisfies mechanical safety performance's purpose, and can not excessively increase the weight of battery package, realize the lightweight, reduce the automobile body energy consumption, increase the continuation of journey mileage.

There is the cavity in the first frame 1, and first frame still includes first rib 111 and second rib 121, and one of them of first rib 111 and second rib 121 sets up along the horizontal direction, and another sets up along vertical direction, specifically, first rib 111 sets up along the horizontal direction in this embodiment, and second rib 121 sets up along vertical direction, and first rib 111 and second rib 121 alternately set up inside the cavity, separate the cavity into a plurality of buffer chambers, can realize energy-absorbing buffering's effect when the collision.

The second frame 2 and the third frame 3 are internally provided with third ribs 21, the third ribs 21 are arranged along the horizontal direction, the thickness of the third ribs 21 is larger than that of the second ribs 121, the thickness of the second ribs 121 is defined as W2, the thickness of the third ribs 21 is W3, W3 is larger than or equal to W2, as a preferable embodiment, the thickness W2 of the second ribs 121 is set to 2mm, the thickness W3 of the third ribs 21 is set to 4mm, and the setting of the third ribs 21 can strengthen the strength of the second frame 2.

Further, a reinforcing rib is disposed between the first frame 1 and the second frame 2 and/or between the third frame 3 and the second frame 2, specifically, in this embodiment, the reinforcing rib is configured as a first diagonal rib 4 and a second diagonal rib 5, the first diagonal rib 4 is disposed between the first frame 1 and the second frame 2, the second diagonal rib 5 is disposed between the second frame 2 and the third frame 3, one end of the first diagonal rib 4 is connected to the bottom wall 131 of the first frame 1 by welding, and the other end is connected to the outer shell wall 22 of the second frame 2 near one side of the third frame 3 by welding, and this structure is configured to optimize a force transmission path, so that each cavity rib position of the section bar section has a better supporting effect.

Further, as shown in fig. 2, the second diagonal ribs 5 are arranged between the third frame 3 and the upper surface of the second frame 2 at intervals, which has a better effect on reinforcing the structural strength of the profile.

As a preferred embodiment, the materials of the first frame 1 and the second frame 2 are AL-6061-T6, and the AL-6061-T6 is a material of the prior art, which is not an improvement of the present utility model and will not be described herein.

Further, as shown in fig. 3, the positioning pin 6 and the sleeve bushing 7 are made of aluminum materials, the aluminum materials are manufactured through cold heading and CNC processing, the positioning pin 6 is connected to the first frame 1 through bolts, the positioning pin 6 is subjected to corner cutting anti-rotation treatment at the joint of the first frame 1, the sleeve bushing 7 is fixed to the first frame 1 through welding, and the positioning pin 6 and/or the sleeve bushing 7 are used for being connected with a vehicle body.

Further, as shown in fig. 4, the present utility model provides a battery pack case assembly including the profile structure 13 and the case frame 8 as described above, the first frame 1 and the second frame 2 of the profile structure 13 being at least partially disposed within the case frame 8; the box body frame 8 is connected with the internal support beam 9 through MIG welding, the box body frame 8 is spliced with other section frames, MIG welding is also carried out at the splicing position, the box body assembly further comprises a bottom guard plate 12, the box body frame 8 and the bottom guard plate 12 enclose a containing cavity, a liquid cooling plate 10 is arranged in the containing cavity, the liquid cooling plate 10 is made of AL-3003 materials and is formed by welding a runner plate and a plane plate, the runner plate is formed by stamping, the plane plate is cut by laser, and preferably, the liquid cooling plate 10 and the box body frame 8 are integrated through an FSW process.

Further, as shown in fig. 5, the battery pack case assembly further includes a sealing ring 11, and the sealing ring 11 is disposed between the case frame 8 and the bottom guard plate 12 to ensure secondary sealing of the case assembly.

As a preferred embodiment, the bottom guard plate 12 is made of DP590 high-strength steel, is formed by stamping, is arranged below the liquid cooling plate 10, is fixedly connected with the box body frame 8 through bolts, plays a role in bottom protection, the sealing ring 11 is made of silicone rubber, is arranged between the bottom guard plate 12 and the box body frame 8, and is adhered to the bottom of the box body frame 8 by single-sided back glue of the sealing ring 11, so that secondary sealing of the box body is ensured.

In addition, the utility model provides a battery pack comprising the battery pack box assembly. The battery pack is fixed on the automobile chassis, the battery pack inner module is connected with the box body frame 8 through bolts, when the automobile body is collided by side columns or similar related collision conditions, it can be understood that due to the design of the profile structure 13, the battery pack is added with the first diagonal ribs 4 and/or the second diagonal ribs 5 to optimize the force transmission path, and the measures of thickening the inner second ribs 21 can generate a reinforced reverse acting force on the automobile body chassis, so that the automobile body is locally reinforced, and the purpose of mechanical safety performance is met.

In summary, the battery pack provided by the utility model comprises a battery pack box assembly, the battery pack box assembly comprises a profile structure 13, the profile structure 13 comprises a first frame 1, a second frame 2 and a third frame 3, the first frame 1 and the second frame 2 are respectively arranged on two opposite sides of the third frame 3, the first frame 1 and the second frame 2 are respectively close to two ends of the third frame 3, when the battery pack is impacted by external force, the first frame 1 is firstly subjected to the external force so as to buffer the extrusion force to the third frame 3 and the second frame 2, the arrangement of the first frame 1 is equivalent to increasing the length outside the battery box, so that the profile collapsing distance when the box is stressed and deformed is increased, thereby achieving the purposes of locally reinforcing the vehicle body, meeting the mechanical safety performance, and not excessively increasing the weight of the battery pack, realizing the light weight, reducing the energy consumption of the vehicle body and increasing the endurance mileage

The technical means disclosed by the scheme of the utility model is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims

1. A profile structure for supporting a battery pack, comprising:

the device comprises a first frame (1), a second frame (2) and a third frame (3), wherein the first frame (1) and the second frame (2) are respectively arranged on two opposite sides of the third frame (3), and the first frame (1) and the second frame (2) are respectively close to two ends of the third frame (3).

2. A profile construction according to claim 1, characterized in that: there is the cavity in first frame (1), first frame (1) still includes first rib (111) and second rib (121), first rib (111) with one of them of second rib (121) sets up along the horizontal direction, and another sets up along vertical direction, first rib (111) with second rib (121) alternately set up in inside the cavity, with the cavity is separated into a plurality of buffer chambers.

3. A profile construction according to claim 2, characterized in that: third ribs (21) are arranged in the second frame (2) and the third frame (3), the third ribs are arranged in the horizontal direction, and the thickness of the third ribs (21) is larger than that of the second ribs (121).

4. A profile construction according to claim 3, characterized in that: the thickness of the second ribs (121) is defined as W2, and the thickness of the third ribs (21) is defined as W3, wherein W3 is more than or equal to W2.

5. A profile structure according to claim 1, characterized in that between the first frame (1) and the second frame (2) and/or between the third frame (3) and the second frame (2) there are stiffening ribs.

6. A profile construction according to any one of claims 1-5, characterized in that: the automobile body positioning device further comprises a positioning pin (6) and/or a sleeve bushing (7) which are arranged on the first frame (1), wherein the positioning pin (6) and/or the sleeve bushing (7) are/is used for being connected with the automobile body.

7. A battery pack case assembly comprising a profile structure (13) according to any one of claims 1-6, characterized in that: the novel box comprises a box body frame (8), and the first frame (1) and the second frame (2) of the profile structure (13) are at least partially arranged in the box body frame (8).

8. The battery pack case assembly of claim 7, wherein: the novel box comprises a box body frame, and is characterized by further comprising a liquid cooling plate (10) and a bottom guard plate (12), wherein the box body frame (8) and the bottom guard plate (12) enclose a containing cavity, and the liquid cooling plate (10) is arranged in the containing cavity.

9. The battery pack case assembly of claim 8, wherein: the novel box comprises a box body frame (8) and a bottom guard plate (12), and is characterized by further comprising a sealing ring (11), wherein the sealing ring (11) is arranged between the box body frame (8) and the bottom guard plate (12).

10. A battery pack, characterized in that: a battery pack case assembly comprising any one of claims 7-9.