Stacked battery box and engineering mechanical equipment

Abstract

The utility model provides a stackable battery box and engineering machinery equipment, which relates to the technical field of new energy, and comprises a plurality of layers of box bodies, in two adjacent layers of box bodies, a first connecting plate and a second connecting plate are respectively arranged on the outer side of the bottom of the box body on the upper layer and the outer side of the top of the box body on the lower layer; every two adjacent layers of box bodies are stacked and fixed through the corresponding first connecting plate and the corresponding second connecting plate, and at least one surface, facing the upper layer of box body, of the first connecting plate is inclined downwards. The Z-direction space is effectively utilized, the volume of the whole box body is increased, the electric quantity of the battery pack is increased, and the expansion of different electric quantities can be flexibly realized; the bolt fixing space occupied by the joints of the box bodies is effectively reduced, and the fastening bolt fixing problem under the condition that the heights between the box bodies are low is solved; the battery pack has excellent mechanical properties, good bearing performance and deformation resistance, and solves the problem that the structural strength and rigidity of the conventional battery pack design cannot meet the use requirements of engineering mechanical equipment under severe working conditions.

Description

Technical Field

[0001] The utility model relates to the technical field of new energy, and in particular to a stacked battery box and engineering machinery equipment. Background Art

[0002] Electric vehicles effectively respond to the national call for green travel, providing strong support for low-carbon living. They are currently one of the major trends in the automotive industry. Their development not only improves environmental protection and energy utilization, but also poses new challenges to vehicle design and safety. Battery pack design, in particular, not only impacts an electric vehicle's power performance but also directly impacts the safety of the entire vehicle. The shape and structure of the battery pack play a crucial role in electric vehicle design. Currently, most battery packs used in passenger and commercial vehicles are typically flat, or single-layer, structures. This design effectively utilizes the vehicle's X and Y dimensions, leaving more room for the vehicle's chassis height, facilitating overall vehicle design and tuning, and ensuring optimal driving performance.

[0003] However, construction machinery and equipment, such as excavators, bulldozers, and cranes, usually need to cope with more complex and harsh working environments, and their design often needs to take into account compactness and functional efficiency. Therefore, in construction machinery and equipment, the space in the X and Y directions is often small, while the battery capacity requirement is high. It can be seen that the current flat battery pack cannot meet this part of the usage requirements. In addition, construction machinery and equipment often work on muddy and dusty construction sites, facing extreme working conditions such as high temperature, low temperature, and vibration. The operating conditions are more severe than those of ordinary passenger cars, and conventional battery packs cannot meet the structural strength and rigidity requirements. Utility Model Content

[0004] In response to the problems existing in the prior art, the present invention provides a stacked battery box, comprising a multi-layer box body, wherein in two adjacent layers of the box body, a first connecting plate and a second connecting plate are respectively provided on the outer side of the bottom of the box body located on the upper layer and on the outer side of the top of the box body located on the lower layer. The two adjacent layers of the box body are stacked and fixed by corresponding first connecting plates and second connecting plates, and at least one side of the first connecting plate facing the upper layer of the box body is tilted downward.

[0005] Preferably, the side of the first connecting plate facing the lower box body and the second connecting plate are both perpendicular to the side surface of the box body.

[0006] Preferably, the first connecting plate and the second connecting plate are correspondingly provided with a plurality of threaded holes, and bolts are passed through the threaded holes for fixing.

[0007] Preferably, a plurality of rivet nut mounting holes are provided on the top of the box body at the uppermost layer, and bolts are passed through the rivet nut mounting holes to fix the upper cover to the top of the box body at the uppermost layer.

[0008] Preferably, sealing rings are provided at the connection between the upper cover and the box body and at the connection between each layer of the box body.

[0009] Preferably, a third connecting plate is provided on the outer side of the bottom of the longitudinal beam of the bottommost box body, and a plurality of battery box fixing holes are opened on the third connecting plate.

[0010] Preferably, a fourth connecting plate is provided on the inner side of the bottom of the transverse beams and longitudinal beams of each layer of the box body, each of the fourth connecting plates is connected to the bottom plate of the corresponding box body, and each of the fourth connecting plates is provided with at least one air vent.

[0011] Preferably, the fourth connecting plate located on the crossbeam is provided with holes for passing high and low voltage cables.

[0012] Preferably, each layer of the box is made of aluminum profiles.

[0013] The utility model also provides an engineering machinery equipment, comprising the above-mentioned stacked battery box.

[0014] The above technical solution has the following advantages or beneficial effects:

[0015] 1) The multi-layer boxes are stacked and fixed, effectively utilizing the Z-direction space. Especially when the battery pack has insufficient space in the X and Y directions, it can increase the volume of the entire box, thereby increasing the battery pack capacity, and can flexibly achieve different power expansion according to needs;

[0016] 2) The side of the first connecting plate facing the upper box is tilted downward, effectively reducing the bolt fixing space occupied at the box connection, solving the problem of fastening bolts when the height between the boxes is low;

[0017] 3) Each layer of the box is made of aluminum profiles, which has the advantages of light weight, high strength and good manufacturability. The connection between the two adjacent layers of the box is fixed by stacking the first connecting plate and the second connecting plate to form a connection structure of an inclined surface and a flat surface. While meeting the requirements of sealing and fastening between the boxes, it has excellent mechanical properties, good load-bearing performance and anti-deformation ability, and a simple structure, which solves the problem that the structural strength and rigidity of conventional battery pack design cannot meet the needs of use in harsh working conditions of engineering machinery and equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a stacked battery box in a preferred embodiment of the present invention;

[0019] Figure 2 This is an exploded view of a stacked battery box in a preferred embodiment of the present invention;

[0020] Figure 3 This is a structural diagram of a single-layer box in a preferred embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of the longitudinal beams of the bottom box in a preferred embodiment of the present invention;

[0022] Figure 5 This is a cross-sectional view of the connection between two adjacent layers of boxes in a preferred embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the fastening angle of the fastening tool in a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0024] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments. The present invention is not limited to this embodiment, and other embodiments may also fall within the scope of the present invention as long as they conform to the main purpose of the present invention.

[0025] In a preferred embodiment of the present invention, based on the above problems existing in the prior art, a stacked battery box is provided. Figures 1 to 5 As shown, it includes multiple layers of boxes 1. In the two adjacent layers of boxes 1, the bottom outer side of the box 1 located on the upper layer and the top outer side of the box 1 located on the lower layer are respectively provided with a first connecting plate 2 and a second connecting plate 3. The two adjacent layers of boxes 1 are stacked and fixed by corresponding first connecting plates 2 and second connecting plates 3, and at least one side of the first connecting plate 2 facing the upper layer of the box 1 is tilted downward.

[0026] Specifically, in this embodiment, the first connecting plate 2 is circumferentially arranged on the bottom outside of the cross beams and longitudinal beams of the upper box body 1, and the second connecting plate 3 is circumferentially arranged on the top outside of the cross beams and longitudinal beams of the lower box body 1. The multi-layer box body 1 is fixed by the first connecting plate 2 and the second connecting plate 3 to realize stacking in the Z direction to form a battery pack, and increase the battery pack space in the Z direction, so that even if the space in the X and Y directions is insufficient, the volume of the entire box body can be effectively increased, thereby increasing the battery pack power. At the same time, the number of stacking layers of the box body 1 can be adjusted according to demand, and the expansion of different power can be flexibly realized. It can be understood that Figures 1 to 5 Only a three-layer box 1 is shown, but this is not limiting.

[0027] Furthermore, since the height of a single-layer box 1 is usually low, when the multi-layer boxes 1 are stacked, the operable space between the two adjacent layers of boxes 1 is small. Based on this, in this embodiment, by tilting the side of the first connecting plate 2 facing the upper box 1 downward, the fastening tool 100 can be used as shown in FIG. Figure 6 The tilted placement shown makes it possible for the fastening space to not be limited to the height of the single-layer box 1 , and there is no need to design additional fastening tools, and existing fastening tools can be used, which facilitates installation and maintenance.

[0028] In a preferred embodiment of the present invention, the side of the first connecting plate 2 facing the lower box body 1 and the second connecting plate 3 are both perpendicular to the side surface of the box body 1 .

[0029] Specifically, if Figure 4 As shown, the cross-section of the first connecting plate 2 along the height direction of the box body 1 is a right-angled trapezoid, and the side of the first connecting plate 2 facing the upper box body 1 is tilted downward to provide space for the stacking installation of the box bodies 1, effectively reducing the bolt fixing space occupied by the box body connection, and solving the problem of fastening bolts when the height between each layer of box bodies is low; the side of the first connecting plate 2 facing the lower box body 1 is perpendicular to the side of the box body 1, so that the bottom surface of the first connecting plate 2 can fit tightly with the second connecting plate 3, while meeting the sealing and fastening requirements between the boxes.

[0030] In a preferred embodiment of the present invention, a plurality of threaded holes 4 are correspondingly provided on the first connecting plate 2 and the second connecting plate 3 , and bolts 41 pass through the threaded holes 4 for fixing.

[0031] Specifically, in this embodiment, the side of the first connecting plate 2 facing the upper box body 1 is tilted downward, so that the installation direction of the bolt becomes tilted, solving the problem of narrow operating space in the original vertical direction when the single-layer box body is low and has a flange edge.

[0032] In a preferred embodiment of the present invention, a plurality of rivet nut mounting holes 5 are provided on the top of the uppermost box body 1 , and bolts are passed through the rivet nut mounting holes 5 to fix the upper cover 6 to the top of the uppermost box body 1 .

[0033] Specifically, in this embodiment, by providing the rivet nut mounting hole 5 at the top, the problem of difficulty in welding the welded nut is avoided.

[0034] In a preferred embodiment of the present invention, sealing rings 7 are provided at the connection between the upper cover 6 and the box body 1 as well as at the connection between each layer of the box body 1 .

[0035] In a preferred embodiment of the present invention, a third connecting plate 9 is provided on the outer side of the bottom of the longitudinal beam 8 of the bottommost box body 1, and a plurality of battery box fixing holes 10 are opened on the third connecting plate 9. The battery box fixing holes 10 are used to install the entire stacked battery box on the entire vehicle.

[0036] In a preferred embodiment of the present invention, a fourth connecting plate 12 is provided on the inner side of the bottom of the cross beam 11 and the longitudinal beam 8 of each layer of the box body 1, and each fourth connecting plate 12 is connected to the bottom plate 13 of the corresponding box body 1, and each fourth connecting plate 12 is provided with at least one air vent 14.

[0037] In a preferred embodiment of the present invention, the fourth connecting plate 12 located on the crossbeam 11 is provided with a high and low voltage cable through hole 15 .

[0038] Specifically, in this embodiment, by providing the ventilation holes 14 and the high and low voltage cable holes 15, the material and electrical connections between the boxes are achieved.

[0039] In a preferred embodiment of the present invention, each layer of the box body 1 is made of aluminum profiles, which has the advantages of light weight, high strength and good manufacturability.

[0040] The utility model also provides an engineering machinery equipment, comprising the above-mentioned stacked battery box.

[0041] Specifically, in this embodiment, each layer of the box body 1 is made of aluminum profiles, which has the advantages of light weight, high strength and good manufacturability, and the connection between the two adjacent layers of the box body 1 is fixed by stacking the first connecting plate 2 and the second connecting plate 3 to form a connection structure of an inclined surface and a flat surface, which meets the sealing and fastening requirements between the box bodies 1 while having excellent mechanical properties, good load-bearing performance and deformation resistance, and a simple structure, solving the problem that the structural strength and rigidity of conventional battery pack design cannot meet the use requirements of engineering machinery equipment in harsh working conditions.

[0042] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the content of this specification and illustrations should be included in the protection scope of the present invention.

Claims

1. A stacked battery box, characterized in that: It includes multiple layers of boxes, and in two adjacent layers of the boxes, a first connecting plate and a second connecting plate are respectively provided on the outer bottom side of the box located on the upper layer and on the outer top side of the box located on the lower layer. The two adjacent layers of the boxes are fixed by stacking the corresponding first connecting plates and second connecting plates, and at least the side of the first connecting plate facing the upper layer of the box is tilted downward.

2. The stacked battery box according to claim 1, wherein: The side of the first connecting plate facing the lower box body and the second connecting plate are both perpendicular to the side surface of the box body.

3. The stacked battery box according to claim 1, wherein: The first connecting plate and the second connecting plate are correspondingly provided with a plurality of threaded holes, and bolts are passed through the threaded holes for fixing.

4. The stacked battery box according to claim 1, wherein: A plurality of rivet nut mounting holes are provided on the top of the box body at the uppermost layer, and bolts are passed through the rivet nut mounting holes to fix the upper cover to the top of the box body at the uppermost layer.

5. The stacked battery box according to claim 4, characterized in that: Sealing rings are provided at the connection between the upper cover and the box body and at the connection between each layer of the box body.

6. The stacked battery box according to claim 1, characterized in that: A third connecting plate is provided on the outer side of the bottom of the longitudinal beam of the box body in the lowest layer, and a plurality of battery box fixing holes are opened on the third connecting plate.

7. The stacked battery box according to claim 1, characterized in that: A fourth connecting plate is provided on the inner side of the bottom of the transverse beams and longitudinal beams of each layer of the box body, and each fourth connecting plate is connected to the bottom plate of the corresponding box body. Each fourth connecting plate is provided with at least one air vent.

8. The stacked battery box according to claim 7, characterized in that: The fourth connecting plate located on the crossbeam is provided with high and low voltage cable passing holes.

9. The stacked battery box according to claim 1, characterized in that: The boxes at each layer are made of aluminum profiles.

10. An engineering machinery equipment, characterized in that: Comprising the stacked battery box according to any one of claims 1-9.

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