A battery box frame, a power battery box assembly, and a power battery box installation assembly

Abstract

The utility model discloses a battery box frame, a power battery box assembly, and a power battery box installation assembly, including a bottom bracket assembly, an inner vertical frame, an outer vertical frame, a top frame, and a plurality of horizontal support frames; the upper surface of the bottom bracket assembly is used to place a plurality of large-capacity battery packs; the inner vertical frame is installed at the inner edge of the bottom bracket assembly; the outer vertical frame is installed at the outer edge of the bottom bracket assembly; the top frame is installed on the top surface of the inner vertical frame and the outer vertical frame; a plurality of horizontal support frames are installed between the bottom bracket assembly and the top frame at intervals, and the upper surface of each layer of horizontal support frames is used to place a plurality of small-capacity battery packs. The utility model enhances the overall support strength of the battery box frame, and can place more battery packs.

Description

Technical Field

[0001] The utility model relates to a battery box frame and belongs to the technical field of power battery boxes of new energy mining vehicles. Background Art

[0002] As an energy-saving and low-carbon engineering machinery, new energy pure electric mining cars are increasingly widely used in the mining field. Their harsh working environment has posed challenges to various technical indicators of new energy mining cars. In order to improve the working performance of new energy mining cars and increase their working time ratio, it is necessary to increase the battery capacity and reduce the overall weight of the vehicle body within its limited space, that is, to increase its weight energy density and volume energy density. At present, the battery box is placed on the bracket so that the battery box mainly bears the gravity of the battery pack. The horizontal support strength of each layer of the battery frame only needs to meet the weight requirements of a single battery pack, and the vertical support between layers only needs to bear the gravity of the battery pack in the vertical direction. The acceleration in the horizontal direction generated by the vibration during the operation of the vehicle is directly borne by the battery box bracket, so the overall strength requirements for the battery box frame are relatively low. When the battery box is directly connected to the frame, the horizontal acceleration generated by the whole vehicle will directly act on the entire frame of the battery box, and the original battery box frame can no longer meet the strength requirements under harsh working conditions. Summary of the invention

[0003] In order to solve the above problems, the utility model proposes a battery box frame for enhancing the overall supporting strength and facilitating the placement of more battery packs.

[0004] The utility model is implemented according to the following technical solutions:

[0005] In a first aspect, the utility model provides a battery box frame, comprising:

[0006] A bottom bracket assembly, on the upper surface of which a plurality of large-capacity battery packs are placed;

[0007] An inner vertical frame, mounted at the inner edge of the bottom bracket assembly, for mounting an inner baffle of the battery box;

[0008] An outer vertical frame, mounted at the outer edge of the bottom bracket assembly, for mounting an outer baffle of the battery box;

[0009] A top frame, mounted on the top surfaces of the inner vertical frame and the outer vertical frame, and used for mounting an upper cover plate of the battery box;

[0010] A plurality of horizontal support frames are installed between the bottom bracket assembly and the top frame at intervals in the upper and lower parts. A battery box front baffle is installed in front of the plurality of horizontal support frames, and a battery box rear baffle is installed behind the plurality of horizontal support frames. The upper surface of each layer of horizontal support frames is used to place a plurality of small-capacity battery packs.

[0011] In some embodiments, the inner vertical frame is composed of a plurality of vertical beams arranged at intervals and at least one horizontal beam is provided between every two adjacent vertical beams; and the inner baffle of the battery box is welded to the inner vertical frame.

[0012] In some embodiments, the vertical beam is formed by welding two U-shaped plates of different widths in a manner that the opening surfaces correspond to the opening surfaces; the horizontal beam is a U-shaped plate having a plurality of through holes arranged thereon to reduce its own weight.

[0013] In some embodiments, the bottom bracket assembly is composed of multiple groups of U-shaped plates that are perpendicular to each other, and a reinforcing structure for increasing the supporting strength is provided at the connection points of the criss-crossing U-shaped plates; the squares formed by the criss-crossing U-shaped plates are encapsulated by welding square plates.

[0014] In some embodiments, square tubes are fixed at the outer edge and front and rear edges of the bottom bracket assembly, and multiple threaded holes are opened on the square tubes for bolting the front baffle plate, rear baffle plate and outer baffle plate of the battery box to the battery box frame.

[0015] In some embodiments, the horizontal support frame is composed of multiple groups of square tubes that are perpendicular to each other and are divided into multiple functional areas. The square tube in the middle is used to support the installation of a small-capacity battery pack; the front square tube is provided with threaded holes for fitting bolts to install the front baffle of the battery box; the rear square tube is provided with threaded holes for fitting bolts to install the rear baffle of the battery box; the outer square tube is provided with threaded holes for fitting bolts to install the outer baffle of the battery box.

[0016] In some embodiments, at least one interlayer support structure for improving the vertical support strength inside the battery box is provided between two adjacent horizontal support frames, between the bottom horizontal support frame and the bottom bracket assembly, and between the top horizontal support frame and the top frame.

[0017] In some embodiments, the interlayer support structure is composed of inclined beams and vertical beams; the vertical beams are used to support the inclined beams in the vertical direction.

[0018] In a second aspect, the utility model provides a power battery box assembly, comprising:

[0019] The battery box frame mentioned above;

[0020] The inner baffle of the battery box is installed on the inner vertical frame of the battery box frame;

[0021] A battery box outer baffle, mounted on an outer vertical frame of the battery box frame;

[0022] A battery box upper cover plate, mounted on the top frame of the battery frame;

[0023] The front baffle plate of the battery box and the rear baffle plate of the battery box are respectively installed on the front and rear surfaces formed by a plurality of horizontal support frames of the battery box frame.

[0024] In the third aspect, the utility model provides a power battery box installation assembly, comprising two of the above-mentioned power battery box assemblies and two reinforced connecting rods; the two power battery box assemblies are suspended on both sides of the frame by bolt connection, and the two reinforced connecting rods are installed at the bottom position between the two power battery box assemblies by bolt connection.

[0025] Beneficial effects of the utility model:

[0026] Larger U-shaped plates and square tubes are used for the main frame to ensure the supporting strength of the main structure. Strengthen the connecting rods to resist the horizontal acceleration generated by the battery box as a whole and reduce the stress and strain generated at the connection between the battery box and the frame. The interlayer support of the battery box increases the diagonal inclined beams and vertical beams. The inclined beams are used to resist the stress and strain in the inclined direction caused by the superposition of vertical and horizontal accelerations during operation, and improve the deformation resistance of various angles inside the battery box. The vertical beams are used to assist in supporting the inclined beams, so that the inclined beams are evenly stressed at all locations, thereby increasing the overall stability of the inclined beams. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are part of the present invention and are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention, but do not constitute an improper limitation on the present invention. Obviously, the accompanying drawings described below are only some embodiments. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0028] In the attached picture:

[0029] Figure 1 This is a schematic diagram of the battery box frame of the utility model;

[0030] Figure 2 It is a schematic diagram of the inner vertical frame of the utility model;

[0031] Figure 3 It is a schematic diagram of the bottom bracket assembly of the utility model;

[0032] Figure 4It is a schematic diagram of a horizontal support frame of the utility model;

[0033] Figure 5 This is a schematic diagram of the arrangement of the battery pack of the utility model inside the battery box;

[0034] Figure 6 This is a schematic diagram of the power battery box installation assembly of the utility model.

[0035] It should be noted that these drawings and textual descriptions are not intended to limit the conceptual scope of the present invention in any way, but rather to illustrate the concept of the present invention for those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0037] In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0038] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] like Figure 1 As shown, the utility model provides a battery box frame 204, whose structure is mainly composed of multiple sets of U-shaped steel and square tube steel welding, reducing the overall weight of the frame, and mainly improving the overall strength of the frame through multiple sets of reinforcing beams and reinforcing ribs. The battery box frame 204 is mainly divided into five parts: an inner vertical frame 701, an outer vertical frame 702, a multi-layer horizontal support frame 703, a top frame, and a bottom bracket assembly 705.

[0040] The inner vertical frame mentioned above is further described below.

[0041] like Figure 2 As shown, the inner vertical frame 701 is welded by vertical U-shaped steel 801 and horizontal U-shaped steel 802. Since this side is directly connected to the frame, it has greater support strength than the outer frame 702 and the horizontal support 703, and the thickness of the U-shaped plate is larger. This part of the vertical U-shaped steel is welded by two U-shaped steels of different sizes, which is stronger than using only one U-shaped plate. A wider U-shaped steel is selected in the horizontal direction to improve the overall support strength. A plurality of holes 803 are arranged on the horizontally arranged U-shaped steel to reduce the weight of this part of the U-shaped steel.

[0042] The above bottom bracket assembly is further described below.

[0043] like Figure 3 As shown, the bottom bracket assembly 705 is composed of a plurality of mutually perpendicular U-shaped steel welds. In addition, a reinforcing structure 901 is added at the criss-crossing U-shaped steel welds to increase the supporting strength of the connection. A plurality of square tubes 902 are welded at the front, back and outside of the bottom bracket assembly 705. Some threaded holes 903 are opened on the square tubes for bolting the front baffle 207 and rear baffle 208 of the battery box to the outer baffle 210 of the battery box and the battery box frame 204.

[0044] The grids formed by the U-shaped steels crisscrossing horizontally and vertically are encapsulated by welding square thin plates 904 to prevent external pollutants from entering the box from the bottom and reduce the weight.

[0045] The above-mentioned horizontal support frame is further described below.

[0046] like Figure 4 As shown, the horizontal support frame 703 is composed of a plurality of mutually perpendicular groups of square tubes, including a middle portion for supporting a horizontal beam group 1001 and mounting holes 1002 for mounting a small-capacity battery pack, a front mounting beam 1003 and a rear mounting beam 1004 are provided with threaded holes for mounting a front baffle 207 and a rear baffle 208 of the battery box, and an outer mounting beam 1005 is provided with threaded holes for fixing and mounting an outer baffle 210 of the battery box.

[0047] Further ministry programs, such as Figure 5 As shown, at least one interlayer support structure 704 for improving the vertical support strength inside the battery box is provided between two adjacent horizontal support frames 703, between the bottom horizontal support frame 703 and the bottom bracket assembly 705, and between the top horizontal support frame 703 and the top frame.

[0048] The interlayer support structure 704 is composed of multiple groups of inclined beams 1101 and vertical beams 1102. The number of interlayer support structures 704 is determined according to the number of battery pack installation compartments, and is used to enhance the vertical support strength inside the battery box to avoid deformation of the battery box frame 204 caused by vertical vibrations during vehicle operation.

[0049] The above-mentioned top frame is further described below.

[0050] Continue to refer to Figure 1 As shown, a plurality of small steel plates 706 are welded on the top frame for fixing and installing the upper cover plate 209 of the battery box, wherein the upper surface of the steel plate 706 is flush with the highest point of the vertical frame of the battery box, so as to facilitate the sealing of the battery box.

[0051] like Figure 6 As shown, the utility model also provides a power battery box assembly 101, including the above-mentioned battery box frame 204, the battery box inner plate 203, the battery box outer baffle 210, the battery box upper cover 209, the battery box front baffle 207, and the battery box rear baffle 208; the battery box inner baffle 203 is installed on the inner vertical frame 701 of the battery box frame 204; the battery box outer baffle 210 is installed on the outer vertical frame 702 of the battery box frame 204; the battery box upper cover 209 is installed on the top frame of the battery frame 204; the battery box front baffle 207 and the battery box rear baffle 208 are respectively installed on the front and rear surfaces formed by multiple horizontal support frames 703 of the battery box frame 204.

[0052] Continue to refer to Figure 6 As shown, a power battery box installation assembly 100 includes two power battery box assemblies 101 and two reinforcing connecting rods 102; wherein the two power battery box assemblies 101 are directly suspended on both sides of the frame by bolt connection, and the connection between the power battery box assembly 101 and the frame is as shown in FIG. Figure 1 two reinforcing connecting rods 102 are bolted to the bottom position between the two power battery box assemblies 101 to increase the bottom support, enhance the lateral vibration resistance, and ultimately avoid the use of the battery box bracket and reduce the weight of the assembly.

[0053] In summary, the utility model adopts larger U-shaped plates and square tubes for the main frame to ensure the supporting strength of the main structure; the strengthening connecting rod is used to resist the horizontal acceleration generated by the battery box as a whole, and reduce the stress and strain generated at the connection between the battery box and the frame; the interlayer support of the battery box increases the inclined beam and vertical beam along the diagonal direction, the inclined beam is used to resist the stress and strain in the inclined direction caused by the superposition of acceleration in the vertical and horizontal directions during operation, and improve the deformation resistance of various angles inside the battery box; the vertical beam is used to auxiliary support the inclined beam, so that the inclined beam is evenly stressed at all locations, thereby increasing the overall stability of the inclined beam.

[0054] In the description provided herein, a large number of specific details are described. However, it is understood that embodiments of the present invention can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.

[0055] In addition, those skilled in the art will understand that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments also means being within the scope of protection of the present utility model and forming different embodiments. For example, in the above embodiments, those skilled in the art can use them in combination according to the known technical solutions and the technical problems to be solved by the present application.

[0056] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Although the utility model has been disclosed as a preferred embodiment as above, it is not used to limit the utility model. Any technician familiar with this patent can make some changes or modify the technical content suggested above into an equivalent embodiment with equivalent changes without departing from the scope of the technical solution of the utility model. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the utility model without departing from the content of the technical solution of the utility model still falls within the scope of the solution of the utility model.

Claims

1. A battery box frame, characterized in that: include: A bottom bracket assembly, on the upper surface of which a plurality of large-capacity battery packs are placed; An inner vertical frame, mounted at the inner edge of the bottom bracket assembly, for mounting an inner baffle of the battery box; An outer vertical frame, mounted at the outer edge of the bottom bracket assembly, for mounting an outer baffle of the battery box; A top frame, mounted on the top surfaces of the inner vertical frame and the outer vertical frame, and used for mounting an upper cover plate of the battery box; A plurality of horizontal support frames are installed between the bottom bracket assembly and the top frame at intervals in the upper and lower parts. A battery box front baffle is installed in front of the plurality of horizontal support frames, and a battery box rear baffle is installed behind the plurality of horizontal support frames. The upper surface of each layer of horizontal support frames is used to place a plurality of small-capacity battery packs.

2. A battery box frame according to claim 1, characterized in that: The inner vertical frame is composed of a plurality of vertical beams arranged at intervals and at least one horizontal beam is provided between every two adjacent vertical beams; The inner baffle of the battery box is welded to the inner vertical frame.

3. A battery box frame according to claim 2, characterized in that: The vertical beam is welded together by two U-shaped plates of different widths in such a way that the opening faces correspond to the opening faces; The horizontal beam is a U-shaped plate, on which a plurality of through holes for reducing its own weight are arranged.

4. A battery box frame according to claim 1, characterized in that: The bottom bracket assembly is composed of a plurality of mutually perpendicular U-shaped plates, and a reinforcement structure for increasing the support strength is provided at the connection points of the criss-crossed U-shaped plates; The grids formed by the crisscross U-shaped plates are encapsulated by welding square plates.

5. A battery box frame according to claim 1, characterized in that: A square tube is fixed to the outer edge and front and rear edges of the bottom bracket assembly. The square tube is provided with a plurality of threaded holes for bolting the front baffle plate, the rear baffle plate and the outer baffle plate of the battery box to the battery box frame.

6. A battery box frame according to claim 1, characterized in that: The horizontal support frame is composed of multiple groups of square tubes that are perpendicular to each other and are divided into multiple functional areas. The square tube in the middle is used to support the installation of a small-capacity battery pack; the front square tube is provided with threaded holes for fitting bolts to install the front baffle of the battery box; the rear square tube is provided with threaded holes for fitting bolts to install the rear baffle of the battery box; the outer square tube is provided with threaded holes for fitting bolts to install the outer baffle of the battery box.

7. A battery box frame according to claim 1, characterized in that: At least one interlayer support structure for improving the vertical support strength inside the battery box is provided between two adjacent horizontal support frames, between the bottom horizontal support frame and the bottom bracket assembly, and between the top horizontal support frame and the top frame.

8. A battery box frame according to claim 7, characterized in that: The interlayer support structure consists of inclined beams and vertical beams; the vertical beams are used to support the inclined beams in the vertical direction.

9. A power battery box assembly, characterized in that: include: The battery box frame according to any one of claims 1 to 8; The inner baffle of the battery box is installed on the inner vertical frame of the battery box frame; A battery box outer baffle, mounted on an outer vertical frame of the battery box frame; A battery box upper cover plate, mounted on the top frame of the battery box frame; The front baffle plate of the battery box and the rear baffle plate of the battery box are respectively installed on the front and rear surfaces formed by a plurality of horizontal support frames of the battery box frame.

10. A power battery box installation assembly, characterized in that: Comprising two power battery box assemblies as claimed in claim 9 and two reinforcing connecting rods; The two power battery box assemblies are suspended on both sides of the vehicle frame through bolt connection, and the two reinforcing connecting rods are installed at the bottom position between the two power battery box assemblies through bolt connection.

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