CN218005139U

CN218005139U - Battery pack box, battery pack and electric vehicle

Info

Publication number: CN218005139U
Application number: CN202220384750.3U
Authority: CN
Inventors: 李�昊; 杨小亮; 陈振南
Original assignee: Beijing CHJ Automobile Technology Co Ltd
Current assignee: Beijing CHJ Automobile Technology Co Ltd
Priority date: 2022-02-24
Filing date: 2022-02-24
Publication date: 2022-12-09
Anticipated expiration: 2032-02-24

Abstract

The utility model discloses a battery package box, battery package and electric motor car, battery package box includes bottom plate, sideboard and protection roof beam, and the sideboard is connected on the upper surface of bottom plate, and sideboard and bottom plate can enclose into the installation cavity that is used for assembling electric core, and the protection roof beam is located one side that the installation cavity was kept away from to the sideboard and the protection roof beam all is connected with sideboard and bottom plate. The utility model discloses a battery package box's protective strength is high, and is with low costs and light in weight.

Description

Battery pack box, battery pack and electric vehicle

Technical Field

The utility model belongs to the technical field of the trolley-bus technique and specifically relates to a battery package box, battery package and electric motor car are related to.

Background

The performance and the cruising ability of the pure electric vehicle are closely related to the battery pack, and the pure electric vehicle can face the collision of the whole vehicle column in the using process, so that collision energy easily invades the battery cell to cause the damage of the battery pack.

In the related art, a battery pack case is proposed for protecting a battery pack, but the battery pack case in the related art has low protection strength, low battery space utilization rate, heavy weight and high cost.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model lies in, to prior art's defect and not enough, provides a battery package box, the protective strength of battery package box is high, and is with low costs and light in weight.

The embodiment of the utility model also provides a battery package.

The embodiment of the utility model provides an electric motor car is proposed again.

The utility model discloses battery package box includes: a base plate; the side plate is connected to the upper surface of the bottom plate, and the side plate and the bottom plate can enclose an installation cavity for assembling the battery cell; the guard beam is located the sideboard is kept away from one side of installation cavity just the guard beam with the sideboard with the bottom plate is all connected.

The utility model discloses battery package box, one side that the installation cavity was kept away from to the sideboard is equipped with the guard beam, and the guard beam all is connected with sideboard and bottom plate, thereby can utilize the guard beam with the guide of partial extrusion force towards the bottom plate, share the atress of sideboard with the bottom plate that utilizes high strength, reduce the probability that sideboard atress warp, under not increasing sideboard thickness and assembly spaced prerequisite, the sideboard that makes battery package box has stronger protective capacities, guarantee electric core safety, when guaranteeing box protective strength promptly, reduce box weight, improve battery space utilization.

In some embodiments, the battery pack case further comprises a sandwich panel attached to the inner side of the side panel.

In some embodiments, the guard beam and the side plate are integrally formed, and the guard beam is connected to the base plate by a connecting member.

In some embodiments, the guard beam includes a beam body and a connecting plate connected between the beam body and the side plate, and the connecting member passes through the connecting plate and the bottom plate to connect the connecting plate and the bottom plate.

In some embodiments, the guard beam further comprises a side pulling plate, the side pulling plate is connected between the beam body and the side plate, the side pulling plate is obliquely and downwards arranged along the direction far away from the side plate, the connecting plate is horizontally arranged along the direction far away from the side plate, and the side pulling plate is located above the connecting plate and is spaced from the connecting plate.

In some embodiments, the guard beam further comprises a reinforcing plate, the beam body has a cavity extending along the length direction of the beam body, the reinforcing plate extends along the length direction of the beam body and penetrates through the cavity, and the reinforcing plate is connected with the peripheral wall of the cavity.

In some embodiments, the reinforcing plate includes a transverse plate, the peripheral wall of the chamber includes two side walls opposed in the width direction of the beam body, the transverse plate is connected between the two side walls, and the transverse plate includes a first section and a second section in the width direction of the beam body, the second section is adjacent to the side plate with respect to the first section, the first section is horizontally disposed in the width direction of the beam body, and the second section extends in a direction away from the first section and is obliquely disposed downward.

In some embodiments, the stiffener further comprises a longitudinal plate connected between the top and bottom walls of the chamber, the transverse plate intersecting the longitudinal plate, the first section being located on a side of the longitudinal plate remote from the edge plate, and the second section being located on a side of the longitudinal plate adjacent to the edge plate.

In some embodiments, the connection of the web to the beam and the connection of the second section to the beam are at the same height.

In some embodiments, the sandwich panel is a plastic honeycomb sandwich panel.

The utility model discloses battery package includes the battery package box of above-mentioned embodiment.

The utility model discloses battery package, through adopting above-mentioned battery package box, battery package structural strength is high, long service life.

The utility model discloses electric motor car includes the battery package of above-mentioned embodiment.

The utility model discloses electric motor car, through adopting above-mentioned battery package, the vehicle performance is good, long service life.

Drawings

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

Fig. 2 is an exploded view of a battery pack case according to an embodiment of the present invention.

Fig. 3 is a cross-sectional view of a battery pack case according to an embodiment of the present invention.

Reference numerals:

the structure comprises a bottom plate 1, side plates 2, a protective beam 3, a beam body 31, a connecting plate 32, side pull plates 33, longitudinal plates 34, transverse plates 35, a first section 351, a second section 352, a sandwich plate 4 and a battery cell 5.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are exemplary intended for explaining the present invention, and should not be construed as limiting the present invention.

As shown in fig. 1-3, the battery pack case according to the embodiment of the present invention includes a bottom plate 1, a side plate 2, and a protection beam 3. It should be noted that the battery pack case of the present application is used for containing the battery cells, and includes, but is not limited to, a case under the battery pack, for example.

Specifically, as shown in fig. 1 and 2, the side plate 2 is attached to the upper surface of the base plate 1, and the side plate 2 and the base plate 1 may enclose a mounting cavity for mounting the battery cell 5. It should be noted that the edge plate 2 may be a ring plate extending along the circumferential direction of the bottom plate 1, or may be side plates (refer to fig. 2) arranged at an interval and opposite to each other, specifically, the structure of the edge plate 2 may be set according to the assembly requirement of the battery cell 5, and only the installation cavity for accommodating the battery cell 5 may be formed between the edge plate 2 and the bottom plate 1.

Further, the protection beam 3 is located the sideboard 2 and is kept away from one side of installation cavity and the protection beam 3 is all connected with sideboard 2 and bottom plate 1. From this, when the battery package box born the impact that comes from the side, outside collision object and protective beam 3 contact, and protective beam 3 can transmit the extrusion force to sideboard 2 and bottom plate 1 simultaneously, utilizes protective beam 3 to lead partial extrusion force towards bottom plate 1 promptly to utilize bottom plate 1 of high strength to share the atress of sideboard 2, reduce the probability that sideboard 2 atress warp, improve the reliability of box protection.

It should be noted that, the battery pack box is known to those skilled in the art as a battery cell holding and protecting structure, and the safety of the battery cell in a collision state is protected by increasing the thickness of the side plate or increasing the distance between the inner side wall of the battery pack box and the battery cell in the related art, but the above manner of increasing the thickness of the side plate will increase the weight of the box undoubtedly and cause a cost increase, and the increase of the distance between the inner side wall of the battery pack box and the battery cell will cause a low space utilization of the battery, which affects the layout of the entire vehicle.

And this application is through setting up protecting beam 3 to utilize protecting beam 3 to guide the extrusion force towards bottom plate 1, form the dispersion to the extrusion force and weaken, under the prerequisite that does not increase 2 thickness of sideboard and assembly interval, make sideboard 2 of battery package box have the protective capacities of high strength, guarantee electric core 5 safety.

The utility model discloses battery package box, one side that the installation cavity was kept away from to the sideboard is equipped with the guard beam, and the guard beam all is connected with sideboard and bottom plate, thereby can utilize the guard beam with the guide of partial extrusion force towards the bottom plate, share the atress of sideboard with the bottom plate that utilizes high strength, reduce the probability that sideboard atress warp, under the prerequisite that does not increase sideboard thickness and assembly interval, the sideboard that makes battery package box has stronger protective capacities, guarantee electric core safety, when guaranteeing box protective strength promptly, reduce box weight, improve battery space utilization.

Further, as shown in fig. 2 and 3, the battery pack case further includes a sandwich panel 4, and the sandwich panel 4 is attached to the inner side surface of the side panel 2. From this, the battenboard 4 can further absorb the extrusion force of sideboard 2 transmission, improves the protective effect, utilizes battenboard 4 to fill the clearance between sideboard 2 inner wall and electric core 5 simultaneously, realizes the compact installation of electric core 5, improves the space utilization of battery package, and is favorable to guaranteeing the stability of the assembly of electric core 5 when the side bumps of battery box.

Preferably, the sandwich panel 4 is a plastic honeycomb sandwich panel.

Further, as shown in fig. 3, the guard beam 3 is integrally formed with the side plate 2, and the guard beam 3 is connected to the floor panel 1 by a connecting member. It should be noted that the guard beam 3 may also be connected to the edge plate 2 by welding.

Further, as shown in fig. 3, the girder 3 includes a girder body 31 and a connection plate 32, the connection plate 32 is connected between the girder body 31 and the side plate 2, and a connection member passes through the connection plate 32 and the base plate 1 to connect the connection plate 32 and the base plate 1. This reduces the material used for the guard beam 3, and also concentrates the pressing force by the connecting plate 32, which is advantageous for guiding the pressing force toward the floor panel 1.

Further, as shown in fig. 3, the guard beam 3 further includes a side pulling plate 33, the side pulling plate 33 is connected between the beam body 31 and the side plate 2, the side pulling plate 33 is disposed obliquely downward in a direction away from the side plate 2, the connecting plate 32 is disposed horizontally in a direction away from the side plate 2, and the side pulling plate 33 is located above the connecting plate 32 and spaced apart from the connecting plate 32.

Further, as shown in fig. 3, the protection beam 3 further includes a reinforcing plate, the beam body 31 has a chamber extending along a length direction thereof, the reinforcing plate extends along the length direction of the beam body 31 and penetrates through the chamber, and the reinforcing plate is connected to a peripheral wall of the chamber. From this, the cavity can realize that the roof beam body 31 subtracts material and falls heavily, and the reinforcing plate can improve the structural strength of the roof beam body 31, improves the anti collision ability of guard beam 3.

Further, as shown in fig. 3, the reinforcing plate includes a lateral plate 35, the peripheral wall of the chamber includes two side walls opposed in the width direction of the girder 31, the lateral plate 35 is connected between the two side walls, and the lateral plate 35 includes a first section 351 and a second section 352 in the width direction of the girder 31, the second section 352 is adjacent to the side plate 2 with respect to the first section 351, the first section 351 is horizontally arranged in the width direction of the girder 31, and the second section 352 extends in a direction away from the first section 351 and is provided obliquely downward. This makes it possible to guide the pressing force downwards with the second section 352, i.e. to use the floor 1 of high strength to absorb the majority of the pressing force, and to avoid overstressing the edge plate 2.

Further, as shown in fig. 3, the reinforcing plate further comprises a longitudinal plate 34, the longitudinal plate 34 is connected between the top wall and the bottom wall of the chamber, the transverse plate 35 intersects the longitudinal plate 34, the first section 351 is located on the side of the longitudinal plate 34 away from the side plate 2, and the second section 352 is located on the side of the longitudinal plate 34 adjacent to the side plate 2. Thereby, the intersecting longitudinal plates 34 and transverse plates 35 may support each other, increasing the structural strength of the reinforcement plate.

Further, as shown in fig. 3, the connection of the connection plate 32 and the beam body 31 and the connection of the second section 352 and the beam body 31 are located at the same height. The second section 352 can thereby transmit the pressing force of the beam body 31 toward the connection plate 32 in the vicinity, facilitating the connection plate 32 to guide the pressing force toward the floor panel 1.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description of the present invention and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

In the present disclosure, the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present disclosure. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims

1. A battery pack case, comprising:

a base plate;

the side plate is connected to the upper surface of the bottom plate, and the side plate and the bottom plate can enclose an installation cavity for assembling the battery cell;

the guard beam is located the sideboard is kept away from one side of installation cavity just the guard beam with the sideboard with the bottom plate is all connected.

2. The battery pack case of claim 1, further comprising a sandwich panel attached to the inner side of the side panel.

3. The battery pack case according to claim 1, wherein the guard beam is integrally formed with the side plate, and the guard beam is connected to the bottom plate by a connecting member.

4. The battery pack case according to claim 3, wherein the guard beam includes a beam body and a connection plate connected between the beam body and the side plate, and the connection member passes through the connection plate and the bottom plate to connect the connection plate and the bottom plate.

5. The battery pack case of claim 4, wherein the protective beam further comprises a side pulling plate connected between the beam body and the side plate, the side pulling plate is disposed obliquely downward in a direction away from the side plate, the connecting plate is disposed horizontally in a direction away from the side plate, and the side pulling plate is located above the connecting plate and spaced apart from the connecting plate.

6. The battery pack case of claim 5, wherein the protection beam further comprises a reinforcing plate, the beam body has a chamber extending along a length direction thereof, the reinforcing plate extends along the length direction of the beam body and penetrates into the chamber, and the reinforcing plate is connected to a peripheral wall of the chamber.

7. The battery pack case according to claim 6, wherein the reinforcing plate comprises a transverse plate, the peripheral wall of the chamber comprises two side walls opposed in the width direction of the beam body, the transverse plate is connected between the two side walls, and the transverse plate comprises a first section and a second section in the width direction of the beam body, the second section is adjacent to the side plate with respect to the first section, the first section is horizontally arranged in the width direction of the beam body, and the second section extends in a direction away from the first section and is provided obliquely downward.

8. The battery pack case of claim 7, wherein the reinforcing plate further comprises a longitudinal plate connected between the top and bottom walls of the cavity, the transverse plate intersecting the longitudinal plate, the first section being located on a side of the longitudinal plate distal from the side plate, and the second section being located on a side of the longitudinal plate proximal to the side plate.

9. The battery pack case of claim 7, wherein the connection of the connection plate to the beam and the connection of the second section to the beam are at the same height.

10. The battery pack case of claim 2, wherein the sandwich panel is a plastic honeycomb sandwich panel.

11. A battery pack characterized by comprising a battery pack case according to any one of claims 1 to 10.

12. An electric vehicle characterized by comprising the battery pack according to claim 11.