CN213366687U

CN213366687U - Battery pack box

Info

Publication number: CN213366687U
Application number: CN202022822595.2U
Authority: CN
Inventors: 赵蕾; 孙国安
Original assignee: Beijing Shidai Ruicheng New Energy Technology Co ltd
Current assignee: Beijing Shidai Ruicheng New Energy Technology Co ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2021-06-04
Anticipated expiration: 2030-11-27

Abstract

The utility model relates to a battery pack box body, which comprises a box body, at least one internal structure beam and at least one internal hanging point beam, wherein the internal structure beam and the internal hanging point beam are positioned in the box body and divide the internal structure into a plurality of containing cavities, the box body comprises four side hanging point beams, a bottom plate and an upper cover which are arranged at intervals up and down, the four side hanging point beams are spliced into a square frame body with an upper opening and a lower opening, wherein the outer sides of two oppositely arranged side hoisting point beams are provided with first hoisting points connected with an external load, the bottom plate is arranged at an opening at the lower end of the square frame body, the upper cover is detachably arranged at an opening at the upper end of the square frame body, the upper end and the lower end of the internal structure beam are respectively jointed with the upper cover and the bottom plate, the lower end of the internal hoisting point beam is fixedly connected with the upper end surface of the bottom plate, the upper end of the upper cover is provided with a second lifting point connected with an external load, and a first through hole for the second lifting point to pass through is arranged at the position on the upper cover corresponding to the second lifting point. The utility model discloses the structure has improved the whole mode of battery package box, increases its structural strength.

Description

Battery pack box

Technical Field

The utility model relates to a battery module field, concretely relates to battery package box.

Background

The current global automotive industry faces significant challenges with energy and environmental issues; the energy utilization rate is high, the pollution-free environment is met, the energy and environment problems of the automobile industry in China are greatly challenged, and the environment-free pure electric automobile increasingly becomes the development direction of the automobile industry in the future. The power battery is used as a core component of the electric automobile, the structure of the power battery box body of the electric automobile is particularly important for the overall structural strength, sealing, corrosion prevention and the like of the battery pack, and along with the development of the new energy industry, the state provides higher vibration requirements, impact requirements and modal requirements for the new energy electric automobile battery pack to ensure the structural safety of the new energy electric automobile.

At present, the new forms of energy electric automobile battery package box adopts panel beating box or cast aluminium box more, and under the normal conditions, the panel beating box is by punching press or panel beating tailor-welding preparation, and this type of box welding is more, and under the vibration operating mode, the solder joint is very easily lost efficacy, and the condition of sealing failure appears in welding or bending punishment. Cast aluminium box, it is with high costs, efficient, and box structural strength is relatively poor, if production technology control is not good, easily produce the sand hole, and difficult the perception, cause the vehicle to appear various problems after using a period.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery pack box body with high structural strength and good sealing performance for solving the technical problems.

The utility model provides an above-mentioned technical problem's technical scheme as follows: a battery pack box comprises a box body, at least one internal structural beam and at least one internal hoisting point beam, wherein the internal structural beam and the internal hoisting point beam are positioned in the box body and divide the interior of the box body into a plurality of accommodating cavities, the box body comprises four side hoisting point beams, a bottom plate and an upper cover which are arranged at intervals up and down, the four side hoisting point beams are spliced into a square frame body with an upper opening and a lower opening, wherein the outer sides of two oppositely arranged side hoisting point beams are provided with first hoisting points connected with external loads, the bottom plate is arranged at the opening at the lower end of the square frame body, the upper cover is detachably arranged at an opening at the upper end of the square frame body, the upper end and the lower end of the internal structure beam are respectively jointed with the upper cover and the bottom plate, the lower end of the internal hoisting point beam is fixedly connected with the upper end surface of the bottom plate, the upper end of the upper cover is provided with a second lifting point connected with an external load, and a first through hole for the second lifting point to pass through is formed in the position, corresponding to the second lifting point, of the upper cover.

The utility model has the advantages that: the battery pack box is internally provided with a plurality of accommodating cavities to form relatively independent space, so that the risk of thermal runaway propagation is reduced, a second lifting point connected with an external load is additionally arranged in the battery pack box, the overall mode of the battery pack box is improved, and the structural strength of the battery pack box is improved.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

Furthermore, the top ends of the internal structure beam and the side hoisting point beam are detachably connected with the upper cover through a plurality of connecting pieces.

The beneficial effect of adopting above-mentioned further scheme is that the leakproofness of improving the battery package box to the mode of upper cover is increased.

Furthermore, the connecting piece is a bolt, a plurality of screw holes which are in one-to-one correspondence with the bolt are formed in the top ends of the internal structure beam and the side hoisting point beam at intervals, and a plurality of second through holes for the bolt to pass through are formed in the positions, corresponding to the screw holes, of the upper cover.

The connecting piece has the advantages of simple structure, convenience in installation and suitability for mass production.

Further, the inner structure beam and the side hoisting point beam are internally provided with cavities, reinforcing ribs are arranged in the cavities, and the reinforcing ribs divide the cavities into a plurality of sub-cavities which are spaced from top to bottom.

The beneficial effect who adopts above-mentioned further scheme is that the structural strength who improves inner structure roof beam and side hoisting point roof beam.

Further, the height of the side hoisting point beam is more than 100 mm.

The beneficial effect of adopting above-mentioned further scheme is that the cross-section height of section bar is higher, is favorable to improving the bending resistance section coefficient of battery package box.

Furthermore, the bottom plate and the side hoisting point beam are both metal pieces and are connected in a sealing manner by welding.

The beneficial effects of adopting the above-mentioned further scheme are that welding process is simple, and the leakproofness is good, improves the sealed effect of box.

Furthermore, a limit block is arranged on one side of the inner side wall of the square frame body on the side hanging point beam enclosure, and the bottom plate is arranged below the limit block and connected with the side hanging point beam through the edge of the bottom plate.

The beneficial effect of adopting above-mentioned further scheme is that fix a position the lateral hanging point roof beam and bottom plate in the welded in-process, increases the welded accuracy.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the present invention with the upper cover removed;

FIG. 3 is an exploded view of the present invention with the upper cover removed;

fig. 4 is an enlarged view of a in fig. 3.

In the drawings, the components represented by the respective reference numerals are listed below:

1. internal structure roof beam, 2, inside hoisting point roof beam, 3, side hoisting point roof beam, 4, bottom plate, 5, upper cover, 6, first hoisting point, 7, second hoisting point, 8, first through-hole, 9, screw, 10, stopper, 11, second through-hole.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1-4, the utility model provides a battery pack box, which comprises a box body, at least one internal structure beam 1 and at least one internal hanging point beam 2, wherein the internal structure beam 1 and the internal hanging point beam 2 are positioned in the box body and divide the internal structure into a plurality of accommodating cavities, the box body comprises four side hanging point beams 3, a bottom plate 4 and an upper cover 5 which are arranged at intervals up and down, the four side hanging point beams 3 are spliced into a square frame body with an upper opening and a lower opening, the outer sides of the two oppositely arranged side hanging point beams 3 are provided with first hanging points 6 connected with an external load, the bottom plate 4 is arranged at the lower opening of the square frame body, the upper cover 5 is detachably arranged at the upper opening of the square frame body, the upper end and the lower end of the internal structure beam 1 are respectively jointed with the upper cover 5 and the bottom plate 4, when a plurality of internal structure beams 1, the internal structural beams 1 can be transversely and longitudinally staggered, namely, the internal structural beams are divided into internal cross beams and internal longitudinal beams, so that the overall mode of the battery pack box body is improved, the lower end of each internal lifting point beam 2 is fixedly connected with the upper end face of the bottom plate 4, the upper end of each internal lifting point beam is provided with a second lifting point 7 connected with an external load, and a first through hole 8 for the second lifting point 7 to penetrate through is formed in the position, corresponding to the second lifting point 7, of the upper cover 5.

Be equipped with a plurality of chambeies that hold in the battery package box, form relatively independent space, reduced the risk that thermal runaway stretchs to increased the second hoisting point 7 of being connected with external load in the battery package box, improved the whole mode of battery package box, increased its structural strength.

Preferably, the top ends of the internal structure beam 1 and the side hanging point beam 3 are detachably connected with the upper cover 5 through a plurality of connecting pieces.

The sealing performance of the battery pack box is improved, and the mode of the upper cover 5 is increased.

Preferably, the connecting piece is a bolt, a plurality of screw holes 9 which correspond to the bolt one by one are formed in the top ends of the internal structure beam 1 and the side hoisting point beam 3 at intervals, and a plurality of second through holes 11 for the bolt to pass through are formed in the positions, corresponding to the screw holes 9, of the upper cover 5.

The connecting piece is simple in structure, convenient to install and suitable for mass production.

Preferably, the internal structure beam 1 and the side hoisting point beam 3 are internally provided with cavities, reinforcing ribs are arranged in the cavities, and the reinforcing ribs divide the cavities into a plurality of sub-cavities which are spaced from top to bottom.

The structural strength of the inner structural beam 1 and the side suspension point beams 3 can be improved.

Preferably, the height of the side hanging point beam 3 is more than 100 mm.

The section height of the section is higher, which is beneficial to improving the bending-resistant section coefficient of the battery pack box body.

Preferably, the bottom plate 4 and the side hoisting point beam 3 are both metal pieces, can adopt aluminum alloy, are favorable for improving the corrosion prevention effect of the battery pack box body, and are connected in a welding and sealing manner. The welding process is simple, the sealing performance is good, and the sealing effect of the box body is improved.

Preferably, a limit block 10 is arranged on one side of the inner side wall of the square frame body on the side hanging point beam 3, and the bottom plate 4 is arranged below the limit block 10 and connected with the side hanging point beam 3 through the edge of the bottom plate. The limiting blocks 10 position the side hoisting point beams 3 and the bottom plate 4 in the welding process, and the welding accuracy is improved.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. A battery pack box is characterized by comprising a box body, at least one internal structure beam (1) and at least one internal hoisting point beam (2), wherein the internal structure beam is positioned in the box body and divides the interior of the box body into a plurality of accommodating cavities;

the box body comprises four side edge hanging point beams (3), a bottom plate (4) and an upper cover (5), wherein the bottom plate (4) and the upper cover (5) are arranged at intervals up and down, the four side edge hanging point beams (3) are spliced into a square frame body with an upper opening and a lower opening, first hanging points (6) connected with external loads are arranged on the outer sides of the two side edge hanging point beams (3) which are oppositely arranged, the bottom plate (4) is arranged at the lower opening of the square frame body, and the upper cover (5) is detachably arranged at the upper opening of the square frame body;

the upper end and the lower end of the internal structural beam (1) are respectively jointed with the upper cover (5) and the bottom plate (4);

the lower end of the inner lifting point beam (2) is fixedly connected with the upper end face of the bottom plate (4), the upper end of the inner lifting point beam is provided with a second lifting point (7) connected with an external load, and a first through hole (8) for the second lifting point (7) to pass through is formed in the position, corresponding to the second lifting point, on the upper cover (5).

2. The battery pack box according to claim 1, wherein the top ends of the internal structural beam (1) and the side hanging point beams are detachably connected with the upper cover (5) through a plurality of connecting pieces.

3. The battery pack box body according to claim 2, wherein the connecting member is a bolt, a plurality of screw holes (9) corresponding to the bolt one by one are formed at intervals at the top ends of the internal structure beam (1) and the side hoisting point beam (3), and a plurality of second through holes (11) for the bolt to pass through are formed at positions of the upper cover (5) corresponding to the screw holes (9).

4. The battery pack box body as claimed in claim 3, wherein the internal structure beam (1) and the side hanging point beam (3) are internally provided with a cavity, and reinforcing ribs are arranged in the cavity and divide the cavity into a plurality of sub-cavities which are spaced up and down.

5. A battery pack case according to claim 1, wherein the height of the side suspension point beams (3) is greater than 100 mm.

6. The battery pack box body according to claim 1, wherein the bottom plate (4) and the side hanging point beams (3) are made of metal and are hermetically connected by welding.

7. The battery pack box body according to claim 6, wherein a limit block (10) is arranged on one side of the side hanging point beam (3) located on the inner side wall of the square frame body, and the bottom plate (4) is arranged below the limit block (10) and connected with the side hanging point beam (3) through the edge of the bottom plate.