Power battery mounting structure of pure electric underground dumper

Abstract

The power battery mounting structure of the pure electric underground dumper comprises a battery bracket, a bracket bracket for supporting the battery bracket and a bracket mounting frame for supporting the bracket bracket, the battery support is of a four-layer frame structure formed by bending, assembling and welding square pipes and steel plates, a high-voltage box mounting bin position, a power control box mounting bin position and a heat management unit mounting bin position are arranged on the top layer in the battery support, and six battery pack mounting bin positions which are arranged left and right are arranged on the lower three layers in the battery support. The support bracket comprises a bottom plate, longitudinal beams arranged on the two longitudinal sides of the bottom plate and cross beams arranged on the two transverse sides of the bottom plate. The bracket mounting frame comprises two bracket mounting seats which are arranged left and right; and the bracket mounting seats are arranged at the bottom of the bottom plate corresponding to the stiffening beams. According to the utility model, protection in the equipment bin is improved; installation is convenient, stress is dispersed, and the reliability of the installation structure is improved; the whole power battery installation structure is simple and reliable, the size is small, the brim height of a container is not affected, and the influence on container arrangement is small.

Description

Technical Field

[0001] The utility model relates to the technical field of dump trucks, in particular to a power battery installation structure for a pure electric underground dump truck. Background Art

[0002] Underground dump trucks are vehicles specially used in underground mines, tunnels, subway construction and other occasions. They can carry out transportation tasks in complex underground environments and conditions, and have the function of transporting materials and personnel underground.

[0003] Due to the complex environment of underground mines or tunnel construction sites, which are characterized by small space, poor ventilation conditions, and high corrosion, the layout of the power battery of pure electric underground dump trucks requires easy installation, high integration, small size, and corrosion resistance.

[0004] For pure electric dump trucks, the current layout of power batteries is primarily divided into rear-mounted and side-mounted. The side-mounted arrangement is generally located below the cargo box floor, outside the frame side beams, between the front and center axles, while the rear-mounted arrangement is located above the frame upper wing, between the cargo box front panel and the cab rear panel. The side-mounted arrangement is limited by the wheelbase of the steering and drive axles and the vehicle width. To accommodate more power batteries, the wheelbase must be increased, impacting the vehicle's axle load distribution and overall vehicle handling. Furthermore, the side-mounted arrangement is low to the ground, hindering the isolation of the power batteries from underground corrosion and increasing the risk of scratches. The rear-mounted arrangement is higher above the ground, reducing underground corrosion. However, due to the low integration of the power battery frame and its installation method, which typically connects to the vehicle frame through the power battery frame's base structure or to brackets fixed to the frame, it occupies a large space, is difficult to install, and is not conducive to cargo box layout. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a power battery installation structure for a pure electric underground dump truck, which improves the protection inside the equipment compartment; it is easy to install and disperses the force, thereby improving the reliability of the installation structure; the entire power battery installation structure is simple and reliable, with a small volume, does not affect the height of the cargo box brim, and has little impact on the cargo box layout.

[0006] In order to solve the above technical problems, the technical solution of the utility model is: a power battery installation structure for a pure electric underground dump truck, which includes a battery bracket, a bracket bracket for supporting the battery bracket and a bracket mounting frame for supporting the bracket bracket; the battery bracket is a four-layer frame structure formed by bending and welding square tubes and steel plates, the top layer inside the battery bracket is provided with a high-voltage box installation position, a power control box installation position and a thermal management unit installation position, the bottom three layers inside the battery bracket are provided with six battery pack installation positions arranged on the left and right, and an expansion water tank installation position is provided on the outer side of the top layer of the battery bracket; the bracket ... It includes a base plate, longitudinal beams arranged on both sides of the base plate in the longitudinal direction, and transverse beams arranged on both sides of the base plate in the transverse direction. Two reinforcing beams are arranged between the two longitudinal beams. The longitudinal beams, transverse beams and reinforcing beams form a U-shaped frame structure. The frame plane formed by the longitudinal beams and transverse beams is the installation plane of the battery holder. The bracket mounting frame includes two bracket mounting seats arranged on the left and right. The bracket mounting seats are arranged at the bottom of the base plate corresponding to the reinforcing beams. The bracket mounting seats are L-shaped, including a transverse plate and a vertical plate perpendicular to the transverse plate. A reinforcing plate is provided between the transverse plate and the vertical plate. A first mounting hole is provided on the transverse plate, and a second mounting hole is provided on the vertical plate. Principle of the utility model: The battery holder has a high degree of integration. In addition to being used for installing power batteries, it is also provided with installation positions for the high-voltage box, power control box and battery thermal management unit of the power supply system, thereby reducing the length of the internal pipelines of the power supply system. In addition, according to the nature of the work, the battery holder is designed with compartments to separate the sealed area and the non-sealed area, further improving the protection inside the equipment compartment. The battery bracket is mounted on the vehicle frame via a bracket and bracket mounting bracket. This detachable structure facilitates installation and distributes force, improving the reliability of the mounting structure. The entire power battery mounting structure is simple and reliable, with a small size that does not affect the height of the cargo box brim and has minimal impact on the cargo box layout.

[0007] As an improvement, the battery bracket is provided with an outer skin, the power control box installation position is located between the high-voltage box installation position and the thermal management unit installation position, and an isolation plate is provided between the thermal management unit installation position and the power control box installation position and at the bottom of the thermal management unit installation position. The outer skin on one side corresponding to the thermal management unit installation position area is a grille hole skin, and the outer skin on the other side corresponding to the thermal management unit installation position area is a louver skin.

[0008] As an improvement, the longitudinal beams and transverse beams are U-shaped bent beams.

[0009] As an improvement, the reinforcing beam includes ribs arranged transversely and longitudinally; hollow holes are provided on the bottom plate in the area surrounded by the longitudinal beam, the transverse beam and the reinforcing beam, and in the area surrounded by the longitudinal beam and the reinforcing beam.

[0010] As an improvement, the transverse plate is connected to the support bracket by bolts, and the vertical plate is connected to the frame side beam by bolts.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] The battery rack is highly integrated. In addition to housing the power battery, it also houses the power system's high-voltage box, power control box, and battery thermal management unit, reducing the length of internal piping in the power system. Furthermore, the battery rack's compartmentalized design, tailored to the nature of its operation, separates sealed and unsealed areas, further enhancing protection within the equipment compartment. The battery rack is mounted to the vehicle frame via a bracket and bracket mounting frame. This detachable structure facilitates installation and disperses force, improving the reliability of the mounting structure. The entire power battery mounting structure is simple, reliable, and compact, maintaining minimal impact on the cargo box's brim height and layout. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a schematic diagram of a pure electric underground dump truck.

[0014] Figure 2 This is an external schematic diagram of the power battery installation structure.

[0015] Figure 3 This is a schematic diagram of the internal structure of the power battery installation.

[0016] Figure 4 Exploded view of the power battery installation structure.

[0017] Figure 5 Schematic diagram of the bracket.

[0018] Figure 6 The following is a diagram of the bracket mounting frame. DETAILED DESCRIPTION

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] like Figure 1 、 2As shown, a power battery mounting structure for a pure electric underground dump truck is mounted on the vehicle frame and located between the cab 3 and the cargo compartment 2. The power battery mounting structure 1 includes a battery holder 11, a bracket 12 for supporting the battery holder 11, and a bracket mounting frame 13 for supporting the bracket 12. The bracket mounting frame 13 includes two bracket mounting seats 131 disposed on the left and right sides of the vehicle frame. The installation sequence is to bolt the left and right bracket mounting seats 131 to the outside of the left and right side beams of the vehicle frame, respectively. Then, bolt the bracket 12 to the bracket mounting seats 131. Finally, bolt the battery holder 11, which is equipped with the power battery and other equipment, to the bracket 12. After the entire structure is installed, it is compact and occupies little space. It is arranged between the cab and the cargo box. The longitudinal center line of its transverse dimension coincides with the longitudinal center line of the frame, coordinating the distribution of the center of gravity of the entire vehicle. At the same time, it is located above the frame side beam in the vertical direction, away from the ground, to prevent the underground road environment from colliding with and corroding the battery bracket 11. It is located below the brim of the cargo box 2 to prevent the cargo from falling when loading.

[0021] like Figure 3 As shown, the battery holder 11 is a four-layer frame structure 111 formed by bending and welding square tubes and steel plates. The top layer inside the battery holder 11 is provided with a high-voltage box installation position, a power control box installation position and a thermal management unit installation position. The power control box installation position is located between the high-voltage box installation position and the thermal management unit installation position. The three installation positions are used to install the high-voltage box 4, the power control box 5 and the thermal management unit 6 respectively. The battery holder 11 has six battery pack installation positions arranged on the left and right in the bottom three layers. Two battery packs 8 are installed on each layer, arranged back to back. An expansion water tank installation position for the battery thermal management unit 6 is also provided on the outside of the top layer for installing the expansion water tank 7. Such a structural arrangement ensures that the main components of the power supply system and the battery thermal management unit 6 are installed in the battery holder 11, and the internal wiring and piping are more convenient. The high and low voltage cables and pipes will not be exposed, and the protection is better. The battery cooling path is short, the battery thermal management is rapid, and the loss is small.

[0022] like Figure 4 As shown, the battery holder 11 is provided with a skin all around, which plays a role in dustproof, waterproof and anti-smashing for the battery pack and other equipment in the holder. The bracket is designed with compartments, and an isolation plate 112 is provided between the thermal management unit installation position and the power control box installation position, as well as at the bottom of the thermal management unit installation position. According to the ventilation requirements, the outer skin on one side of the thermal management unit installation position area is a grille hole skin 114, and the outer skin on the other side of the thermal management unit installation position area is a louver skin 113 to meet the ventilation requirements of the thermal management unit when it is working. Except for the partition 112 used for isolating the partitions inside the battery holder 11, the rest of the skins are designed to be detachable and fixed with screws to meet the maintenance requirements of the equipment inside the holder.

[0023] like Figure 5 As shown, the support bracket 12 includes a base plate 121, longitudinal beams 122 arranged on both sides of the base plate 121 in the longitudinal direction, and transverse beams 123 arranged on both sides of the base plate 121 in the transverse direction; two reinforcing beams 124 are arranged between the two longitudinal beams 122, and the longitudinal beams 122, transverse beams 123 and reinforcing beams 124 form a U-shaped frame structure with a simple structure, easy processing and high strength. The longitudinal beams 122 and transverse beams 123 are U-shaped bent beams, and the frame plane formed by the longitudinal beams 122 and transverse beams 123 is the installation plane of the battery bracket 11. The reinforcing beams 124 include ribs arranged in the transverse and longitudinal directions; the base plate 121 is provided with hollow holes 125 in the area enclosed by the longitudinal beams 122, transverse beams 123 and reinforcing beams 124, as well as in the area enclosed by the longitudinal beams 122 and reinforcing beams 124.

[0024] like Figure 6 As shown, the bracket mounting seat 131 is arranged at the bottom of the base plate 121 corresponding to the reinforcing beam 124, and the bracket mounting seat 131 is L-shaped, which includes a horizontal plate 1311 and a vertical plate 1312 perpendicular to the horizontal plate 1311, and a reinforcing plate 1313 is provided between the horizontal plate 1311 and the vertical plate 1312. The horizontal plate 1311 is provided with a first mounting hole 1314, and the vertical plate 1312 is provided with a second mounting hole 1315. The horizontal plate 1311 is connected to the bracket 12 by bolts, and the vertical plate 1312 is connected to the frame side beam by bolts.

[0025] Principle of the present utility model: The battery holder 11 is highly integrated. In addition to being used to install power batteries, it is also provided with installation positions for the high-voltage box, power control box and battery thermal management unit of the power supply system, thereby reducing the length of internal pipelines of the power supply system; in addition, according to the nature of the work, the battery holder 11 is designed with compartments to separate the sealed area and the non-sealed area, further improving the protection of the equipment compartment. The battery holder 11 is installed on the vehicle frame through the bracket bracket 12 and the bracket mounting frame 13. This detachable structure is easy to install and disperses the force, thereby improving the reliability of the installation structure. The entire power battery installation structure is simple and reliable, with a small size, does not affect the height of the cargo box brim, and has little impact on the cargo box layout.

Claims

1. A power battery installation structure for a pure electric underground dump truck, characterized by: The battery bracket comprises a battery bracket, a bracket support for supporting the battery bracket and a bracket mounting frame for supporting the bracket bracket; the battery bracket is a four-layer frame structure formed by bending and welding square tubes and steel plates, the top layer inside the battery bracket is provided with a high-voltage box installation position, a power control box installation position and a thermal management unit installation position, the bottom three layers inside the battery bracket are provided with six battery pack installation positions arranged on the left and right, and an expansion water tank installation position is provided on the outside of the top layer of the battery bracket; the bracket comprises a bottom plate, longitudinal beams arranged on both sides of the bottom plate and longitudinal beams arranged on the bottom plate The cross beams on both sides of the plate are arranged in the horizontal direction, and two reinforcing beams are arranged between the two longitudinal beams. The longitudinal beams, cross beams and reinforcing beams form a U-shaped frame structure, and the frame plane composed of the longitudinal beams and cross beams is the installation plane of the battery holder; the bracket mounting frame includes two bracket mounting seats arranged on the left and right, and the bracket mounting seats are arranged at the bottom of the base plate corresponding to the reinforcing beams. The bracket mounting seat is L-shaped, which includes a cross plate and a vertical plate perpendicular to the cross plate. A reinforcing plate is provided between the cross plate and the vertical plate, and a first mounting hole is provided on the cross plate and a second mounting hole is provided on the vertical plate.

2. The power battery installation structure of a pure electric underground dump truck according to claim 1, characterized in that: The battery bracket is provided with an outer skin, the power control box installation position is located between the high-voltage box installation position and the thermal management unit installation position, and an isolation plate is provided between the thermal management unit installation position and the power control box installation position and at the bottom of the thermal management unit installation position. The outer skin on one side corresponding to the thermal management unit installation position area is a grille hole skin, and the outer skin on the other side corresponding to the thermal management unit installation position area is a louver skin.

3. The power battery installation structure of a pure electric underground dump truck according to claim 1, characterized in that: The longitudinal beams and the transverse beams are U-shaped bending beams.

4. The power battery installation structure for a pure electric underground dump truck according to claim 1, characterized in that: The reinforcing beam includes ribs arranged transversely and longitudinally; hollow holes are provided on the bottom plate in the area surrounded by the longitudinal beam, the transverse beam and the reinforcing beam, and in the area surrounded by the longitudinal beam and the reinforcing beam.

5. The power battery installation structure of a pure electric underground dump truck according to claim 1, characterized in that: The transverse plate is connected to the support bracket through bolts, and the vertical plate is connected to the frame side beam through bolts.

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