Battery box and battery for engineering machinery

Abstract

The utility model discloses a battery box and a battery for engineering machinery. The battery box comprises more than two shells which are distributed in a stacking manner, a cover plate which is arranged at the top of the uppermost shell and a high-voltage box body which is arranged on the cover plate, the shells are in a cuboid shape, the tops of the shells are of an opening structure, and the opposite bottoms and tops of the adjacent shells are connected through matched flange plates. The cover plate is hermetically connected to the opening structure of the topmost shell; the front side wall of the shell is provided with a through MSD access hole and an assembly hole for assembling a wiring harness, and is provided with a corresponding sealing plate; threading holes are formed in the lower wall of the shell and one end, close to the front side wall, of the cover plate; and the high-voltage box body is mounted above the threading holes of the cover plate in a sealing manner. According to the battery box and the battery for the engineering machinery disclosed by the utility model, each layer of battery component is modularized, each layer of battery component is convenient to disassemble and assemble, the occupied space of the battery box is smaller, and the space utilization rate is higher.

Description

Technical Field

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

[0002] New energy technologies have been widely used in the field of construction machinery. For construction machinery of different models, sizes, and load capacities, the required battery sizes and powers are also different. At present, there are some existing technologies that stack multiple battery cells and connect them in series or parallel to suit construction machinery with different energy requirements.

[0003] For example, Chinese patent CN218498276U discloses an energy storage device for engineering machinery, including a frame and an energy storage module, the energy storage module includes a bracket, and at least two battery cells electrically connected to each other, the battery cells are rectangular structures, each adjacent battery cell is arranged on the bracket in a parallel manner with long sides, and connecting plates are arranged on both sides of the bracket on the side of the long side of the battery cell, and locking assemblies and shock-absorbing pad assemblies are arranged on the connecting plates; it also includes a transition mounting plate, the cross section of the transition mounting plate is bent, and the side of the transition mounting plate is connected to the inner side of the frame; bottom mounting plates are also arranged on both sides of the bottom of the frame, and the locking assembly can be selectively connected to the bottom mounting plate or the top surface of the transition mounting plate, so that multiple energy storage modules can be arranged in an overlapping manner along the vertical direction of the frame. On the one hand, the frame structure of the prior art occupies a large space, which makes the space utilization rate of the battery mounting structure small, and on the other hand, under the working conditions of different models, the disassembly and assembly of the battery unit is cumbersome, and the frame of its overall structure further limits the space utilization rate.

[0004] For example, Chinese patent CN220324576U discloses an integrated battery pack and electric engineering machinery, the integrated battery pack includes at least two single-layer battery packs, at least two single-layer battery packs are stacked, the single-layer battery pack includes a box, battery cells and electronic control components, the box includes a battery box and a distribution box, the distribution box is fixedly connected to one side of the battery box, the battery cells are arranged in the battery box, the electronic control components are arranged in the distribution box, and a connector is arranged on the connecting plate between the distribution box and the battery box, the connector is used to connect the battery cells and the electronic control components. In this prior art, a distribution box is arranged at the front end of each layer of battery pack, and the multi-layer stacking structure causes the battery pack to be provided with multiple distribution boxes, that is, it occupies a large space and has a low space utilization rate. Under the working conditions where different models require the removal or addition of battery units, the removal and installation of battery units are cumbersome. Utility Model Content

[0005] In view of the above problems, the utility model provides a battery box for construction machinery, aiming to solve the problems in the prior art that the battery box occupies a large space and has low space utilization, and the disassembly and assembly of battery units is cumbersome when different models need to remove or add battery units.

[0006] The utility model adopts the following technical solutions to achieve the above purpose:

[0007] A battery box for engineering machinery, comprising more than two stacked shells, a cover plate installed on the top of the uppermost shell and a high-voltage box body installed on the cover plate; wherein the shell is in the shape of a rectangular parallelepiped and has an open structure at the top, and the bottoms and tops of adjacent shells are respectively provided with matching flanges and connected by fixing bolts; the cover plate is sealingly connected to the opening structure of the uppermost shell; the front side wall of the shell is provided with a through MSD inspection port and an assembly port for assembling a wiring harness; the MSD inspection port and the assembly port are respectively provided with a detachable inspection sealing plate and an assembly sealing plate; the lower wall of the shell and the cover plate are provided with threading holes at one end close to the front side wall, and the high-voltage box body is sealingly installed above the threading hole of the cover plate.

[0008] In the present technical solution, each layer of battery assemblies is modularized by adding MSD inspection ports and assembly ports on the outside of each layer of the shell, which facilitates the disassembly and assembly of each layer of battery assemblies. The MSD inspection ports correspond to the positions of manual maintenance switches of each layer of battery assemblies. When a layer of battery assemblies needs to be disassembled or added, the manual maintenance switches of the corresponding battery assemblies can be disconnected through the MSD inspection ports to improve safety during the disassembly and assembly process. The assembly ports correspond to the layout positions of the wire cables and communication cables of each layer of battery cells. When a layer of battery assemblies needs to be disassembled or added, the cables can be removed or connected through the assembly ports. An independent high-voltage box is arranged above the shell to replace the method of installing a high-voltage box at the front end of each layer of the shell in the prior art, so that the battery box occupies less space and can improve space utilization. In addition, the shell is used as a supporting structure between layers to replace the supporting frame structure in the prior art, which can further improve space utilization.

[0009] A further technical solution is that a sealing strip is provided between the matching flanges. This technical solution can improve the sealing performance between the shells.

[0010] A further technical solution is that one of the matching flanges is provided with a positioning pin, and the other is provided with a positioning hole matched with the positioning pin. This technical solution can facilitate the assembly of the battery box.

[0011] A further technical solution is that the side wall of the shell is provided with reinforcing ribs. This technical solution can improve the rigidity of the battery box.

[0012] A further technical solution is that the MSD inspection port is provided with a limit frame matched with the outer periphery of the inspection sealing plate, a sealing strip is provided between the limit frame and the inspection sealing plate, and the inspection sealing plate and the limit frame are connected by bolts.

[0013] A further technical solution is that the outer circumference of the assembly port is smaller than the outer circumference of the assembly sealing plate, the assembly sealing plate is installed to the outside of the assembly port by bolts, and a sealing strip is provided between the assembly port and the assembly sealing plate.

[0014] A battery comprises a battery unit and the above-mentioned battery box, wherein the battery unit is installed in a shell.

[0015] The beneficial effects of the utility model are:

[0016] The utility model provides a battery box and battery for engineering machinery. By adding an MSD inspection port and an assembly port on the outside of each layer of the shell, each layer of battery components is modularized to facilitate the disassembly and assembly of each layer of battery components. The MSD inspection port corresponds to the position of the manual maintenance switch of each layer of battery components. When it is necessary to disassemble or add a layer of battery components, the manual maintenance switch of the corresponding battery component can be disconnected through the MSD inspection port to improve the safety during the disassembly and assembly process. The assembly port corresponds to the layout position of the wire cables and communication cables of each layer of battery units. When it is necessary to disassemble or add a layer of battery components, the cables can be removed or connected through the assembly port; and an independent high-voltage box is arranged above the shell to replace the method of installing a high-voltage box at the front end of each layer of the shell in the prior art, so that the battery box occupies a smaller space and can improve space utilization. In addition, the shell is used as a supporting structure between layers to replace the supporting frame structure in the prior art, which can further improve space utilization. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : A schematic diagram of the structure of a battery box for engineering machinery according to the utility model.

[0018] Figure 2 : A schematic diagram of the split body of the battery box for engineering machinery described in the utility model.

[0019] In the figure:

[0020] 1. Shell; 10. Opening structure; 11. Top shell; 12. MSD inspection port; 13. Assembly port; 14. Positioning pin; 15. Reinforcement rib; 2. Cover plate; 3. High-voltage box body; 41. First flange; 42. Second flange; 420. Sealing groove. DETAILED DESCRIPTION

[0021] The following is combined with Figure 1 to Figure 2The present invention is described in detail with specific implementation modes. In the absence of conflict, the following embodiments and features in the embodiments may be combined with each other.

[0022] like Figure 1 to Figure 2 As shown, this embodiment provides a battery box for engineering machinery, including more than two stacked shells 1, a cover plate 2 installed on the top of the top shell 11 and a high-voltage box body 3 installed on the cover plate 2; wherein the shell 1 is in a rectangular shape and has an open structure 10 at the top, and the bottoms and tops of adjacent shells 1 are respectively provided with matching flanges and connected by fixing bolts; the cover plate 2 is sealed and connected to the opening structure 10 of the top shell 11; the front side wall of the shell 1 is provided with a through MSD inspection port 12 and an assembly port 13 for assembling the wiring harness; the MSD inspection port 12 and the assembly port 13 are respectively provided with a detachable inspection sealing plate and an assembly sealing plate; the lower wall of the shell 1 and the cover plate 2 are provided with threading holes at one end close to the front side wall, and the high-voltage box body 3 is sealed and installed above the threading hole of the cover plate 2.

[0023] Specifically, in this embodiment, four stacked shells 1 are used, and the shell bottom plate located at the upper side of the adjacent shells 1 serves as the top plate of the upper shell, and is sealed and connected to the opening structure of the lower shell, so that the four shells 1 form a stacked structure distributed up and down;

[0024] The sealing connection structure includes a first flange 41 located at the upper part of the upper shell of the adjacent shells 1 and a second flange 42 located at the upper part of the lower shell. The second flange 42 is provided with a sealing groove 420 on the end face opposite to the first flange 41 for installing a sealing strip. After the first flange 41 and the second flange 42 are connected by fixing bolts, the end face of the first flange 41 and the lower wall of the sealing groove 420 squeeze the sealing strip, thereby forming a sealing structure between the adjacent shells 1.

[0025] The cover plate 2 can be specifically provided with a sealing groove at a position corresponding to the top edge of the uppermost shell 11, and fixed to the top edge of the uppermost shell 11 by bolts, so as to achieve a sealed connection; the high-pressure fitting 3 can be specifically provided with a sealing groove at its bottom edge, and installed above the threading hole of the cover plate 2 by bolts;

[0026] The first flange 41 and the second flange 42 are specifically flange structures at the lower end and the upper end of the housing 1, and are connected to the lower end and the upper end of the housing 1 in an integrally formed manner;

[0027] The MSD inspection port 12 and the inspection sealing plate are specifically matched in that the MSD inspection port 12 is provided with a limit frame matched with the outer periphery of the inspection sealing plate, a sealing strip is provided between the limit frame and the inspection sealing plate, and the inspection sealing plate and the limit frame of the MSD inspection port 12 are connected by bolts; the assembly port 13 and the assembly sealing plate are specifically matched in that the outer periphery size of the assembly port 13 is smaller than the outer periphery size of the assembly sealing plate, the assembly sealing plate is installed to the outside of the assembly port 13 by bolts, and a sealing strip is provided between the assembly port 13 and the assembly sealing plate.

[0028] The battery box in this embodiment makes each layer of battery components modular by adding MSD inspection ports 12 and assembly ports 13 on the outside of each layer of the shell 1, so as to facilitate the disassembly and assembly of each layer of battery components, wherein the MSD inspection port 12 corresponds to the position of the manual maintenance switch of each layer of battery components. When it is necessary to disassemble or add a layer of battery components, the manual maintenance switch of the corresponding battery components can be disconnected through the MSD inspection port 12 to improve the safety during the disassembly and assembly process. The assembly port 13 corresponds to the layout position of the wire cables and communication cables of each layer of battery units. When it is necessary to disassemble or add a layer of battery components, the cables can be removed or connected through the assembly port 13; and an independent high-voltage box body 3 is arranged above the topmost shell 11 to replace the method of installing a high-voltage box at the front end of each layer of the shell in the prior art, so that the battery box occupies a smaller space and can improve space utilization; in addition, the shell 1 is used as a supporting structure between layers to replace the supporting frame structure in the prior art, which can further improve space utilization.

[0029] The above-mentioned embodiments exemplarily show the sealing connection structure between components. In other embodiments or practical applications, other methods can be used as substitutes. For example, between the first flange 41 and the second flange 42, between the top shell 11 and the cover plate 2, and between the cover plate 2 and the high-pressure box body 3, a sealing strip can be arranged only between the two components, that is, no sealing groove is provided; between the assembly port 13 and the assembly sealing plate, a sealing structure similar to the maintenance sealing plate can be adopted; conversely, between the MSD maintenance port 12 and the maintenance sealing plate, a sealing structure similar to the assembly sealing plate can be adopted; or the sealing strip can be replaced by sealant or the like; in addition, the above-mentioned bolt fixing connection method can also be replaced by snap-fit ​​or the like.

[0030] In another embodiment, in order to further facilitate the assembly of the battery box and the installation of a new layer of the shell 1, based on the above embodiment, a positioning pin 14 is arranged in one of the first flange 41 and the second flange 42, and a positioning hole matching the positioning pin 14 is opened in the other.

[0031] In another embodiment, based on the above embodiment, in order to improve the rigid support of the battery box, the side wall of the shell 1 is provided with a reinforcing rib 15, and the two ends of the reinforcing rib 15 extend to the upper end and the lower end of the shell 1 respectively.

[0032] Another embodiment provides a battery for providing electrical energy for engineering machinery, including battery cells and the battery box in the above embodiment, wherein the battery cells are installed in a shell 1, and the wire cables and communication cables between each layer of battery cells and between the battery cells and the high-voltage box are passed through the threading holes on the lower wall of the shell 1 and the threading holes on the cover plate 2. When it is necessary to increase or decrease the battery cells, the manual maintenance switch is closed through the MSD inspection port 12 to put the battery cells in a power-off state, the shell 1 of the required battery cells is removed or installed, and the cables are passed through the corresponding threading holes through the assembly port 13 to complete the line connection, and then the manual maintenance switch is opened to complete the increase or decrease of the battery cells.

[0033] The utility model provides a battery box and battery for engineering machinery. By adding an MSD inspection port 12 and an assembly port 13 on the outside of each layer of the shell 1, each layer of battery components is modularized to facilitate the disassembly and assembly of each layer of battery components. The MSD inspection port 12 corresponds to the position of the manual maintenance switch of each layer of battery components. When it is necessary to disassemble or add a layer of battery components, the manual maintenance switch of the corresponding battery component can be disconnected through the MSD inspection port 12 to improve the safety during the disassembly and assembly process. The assembly port 13 corresponds to the layout position of the wire cables and communication cables of each layer of battery units. When it is necessary to disassemble or add a layer of battery components, the cables can be removed or connected through the assembly port 13; and an independent high-voltage box body 3 is arranged above the top shell 11 to replace the method of installing a high-voltage box at the front end of each layer of the shell in the prior art, so that the battery box occupies a smaller space and can improve space utilization. In addition, the shell 1 is used as a supporting structure between layers to replace the supporting frame structure in the prior art, which can further improve space utilization.

Claims

1. A battery box for construction machinery, characterized in that: It comprises two or more stacked shells, a cover plate installed on the top of the uppermost shell, and a high-voltage box body installed on the cover plate; The shell is in the shape of a cuboid with an open top. The bottom and top of adjacent shells are respectively provided with matching flanges and connected by fixing bolts. The cover plate is sealingly connected to the opening structure of the top shell; The front side wall of the housing is provided with a through MSD inspection port and an assembly port for assembling the wiring harness; the MSD inspection port and the assembly port are respectively provided with a detachable inspection sealing plate and an assembly sealing plate; The lower wall of the shell and the cover plate are both provided with threading holes at one end close to the front side wall, and the high-voltage box body is sealed and installed above the threading hole of the cover plate.

2. A battery box for construction machinery according to claim 1, characterized in that: A sealing strip is provided between the matching flanges.

3. A battery box for construction machinery according to claim 1, characterized in that: One of the matching flanges is provided with a positioning pin, and the other is provided with a positioning hole matched with the positioning pin.

4. A battery box for construction machinery according to claim 1, characterized in that: The side wall of the shell is provided with reinforcing ribs.

5. A battery box for construction machinery according to claim 1, characterized in that: The MSD inspection port is provided with a limit frame matched with the outer periphery of the inspection sealing plate, a sealing strip is provided between the limit frame and the inspection sealing plate, and the inspection sealing plate and the limit frame are connected by bolts.

6. A battery box for construction machinery according to claim 1, characterized in that: The outer circumference size of the assembly port is smaller than the outer circumference size of the assembly sealing plate. The assembly sealing plate is installed to the outside of the assembly port by bolts. A sealing strip is provided between the assembly port and the assembly sealing plate.

7. A battery, characterized in that: A battery box comprising a battery unit and any one of claims 1 to 6, wherein the battery unit is installed in a shell.

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