Integrated installation and damping structure of battery power system of pure electric mine car

Abstract

The utility model discloses a kind of pure electric mine car battery power system integration installation and damping structure, belong to battery structure technical field, including bottom support, bearing point and positioning reference for installing power battery system and thermal management unit are equipped on it;Including multiple pad shock absorber installed between the bottom of bottom support and frame;Including multiple circular shock absorber installed between the side of bottom support and frame;Including multiple groups of side pull rod bearing damping device installed on the side of battery pack and thermal management unit, the installation direction of multiple groups of side pull rod bearing damping device is different, and it is collectively constituted a multidimensional damping network.The utility model has the advantages that: lightweight integrates battery and thermal management system, and provides buffer damping for battery pack and thermal management system.

Description

Technical Field

[0001] This utility model relates to the field of battery structure technology, specifically to an integrated installation and vibration reduction structure for a pure electric mining truck battery power system. Background Technology

[0002] Currently, most pure electric mining trucks adopt a "split-type" layout: the battery system (battery pack, BMS) and the thermal management system (unit, frame) are respectively fixed to the chassis or sub-chassis by brackets and connected to the wiring harness via pipelines. Vibration reduction mainly uses rectangular rubber pads between the tray and the chassis, with some areas using metal rubber pads for floating support. The battery tray is mostly a closed welded frame, emphasizing overall rigidity and protection.

[0003] Technical problems and defects of existing technologies: 1. Structural redundancy and excessive weight: Split installation results in a large number of brackets, connectors, and fastening points, with high additional structural weight, which affects the battery life.

[0004] 2. Insufficient vibration isolation and shock protection: Under low-frequency high impact and random road patterns, relying solely on traditional flat rubber pads can easily lead to stress concentration and insufficient lifespan.

[0005] 3. Low space and layout efficiency: Split-type structures occupy vertical and horizontal space, limiting space layout.

[0006] 4. Unreasonable center of gravity distribution: Multiple scattered installations cause the center of gravity to shift, affecting the stability of the vehicle's center of gravity. Utility Model Content

[0007] The present invention aims to solve the technical problems mentioned in the background section above by providing an integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck. This structure integrates the battery system and the thermal management system, thus maintaining lightweight design while providing cushioning and vibration reduction.

[0008] According to the content of this utility model, the technical solution provided by this utility model is: an integrated installation and vibration reduction structure for a pure electric mining truck battery power system, comprising: The base has a support point and positioning reference for installing the power battery system and thermal management unit; Multiple pad-type shock absorbers are installed between the bottom of the base and the frame; Multiple circular shock absorbers are installed between the side of the base and the frame; In addition, there are multiple sets of side tie rod bearing vibration damping devices installed on the sides of the battery pack and thermal management unit. The installation directions of the multiple sets of side tie rod bearing vibration damping devices are different, which together form a multi-dimensional vibration damping network.

[0009] In some embodiments, the base is a hollow web structure with holes arranged along the principal stress direction and reinforcing protrusions on the edge of the holes to improve local rigidity; the base integrates lifting holes, limiting blocks and positioning cones, so that the power battery system and thermal management unit form an integral module that can be lifted into place in one go.

[0010] In some embodiments, the power battery system includes multiple self-coupling battery boxes, which are self-coupling connected by snap-fit ​​and fixed to each other by rigid connecting plates, with only a few main fixing points remaining externally connected to the vehicle body.

[0011] In some embodiments, the pad-type shock absorber includes a rubber pad and a fixing bolt. The fixing bolt passes through the base, the rubber pad and the frame from top to bottom. By applying a preload to the rubber pad, vertical fixation and vibration reduction between the base and the frame are achieved.

[0012] In some embodiments, the circular shock absorber includes a rubber pad and a fixing bolt, which passes through the frame, the rubber pad and the base from front to back. By applying a preload to the rubber pad, the lateral fixation and vibration reduction between the base and the frame are achieved, and the load is evenly distributed and edge stress is suppressed.

[0013] In some embodiments, the side tie rod bearing vibration damping device includes: The upper rod end bearing assembly is used for hinged connection with the frame; A rigid tie rod, the upper end of which is connected to a rod end bearing assembly; And the lower shock-absorbing component, which includes upper and lower shock-absorbing pads. The lower end of the pull rod passes through the upper limit plate, the upper shock-absorbing pad, the connecting plate fixed to the battery pack, the lower shock-absorbing pad, and the lower limit plate in sequence before being fixed.

[0014] In some embodiments, raised annular steps are provided on the opposite surfaces of the upper and lower shock-absorbing pads. The annular steps are inserted into the connecting holes of the connecting plate to buffer shear force.

[0015] In some embodiments, the rod end bearing assembly is a rod end spherical bearing, the outer ring of which is rigidly connected to the upper end of the rigid tie rod, and the inner ring is hinged to the frame via a pin, allowing the tie rod to swing within a certain range to compensate for installation errors and off-center loads.

[0016] In some embodiments, the installation direction of the multiple sets of side tie rod bearing vibration damping devices is configured such that: two sets are installed in an inclined and intersecting direction, and the other set is horizontal and perpendicular to the side of the battery pack. The two sets on the thermal management unit are respectively set to be horizontally inclined and horizontally parallel, so as to jointly bear the vibration and impact from all directions.

[0017] The advantages of this utility model compared with the prior art are as follows: 1. The power battery and thermal management are integrated into the base, sharing the installation benchmark and protective structure, and unifying hoisting and positioning, making the structure more compact; assembly time and error sources are reduced; 2. The base adopts a guide-vibration isolation combination of bearing + vibration damping pad, which works in conjunction with elastic vibration damping pads to perform vertical vibration damping. A circular vibration damping pad is added at the rear of the base to evenly distribute the load, suppress edge stress, and improve durability; 3. The base is hollowed out according to the force path, and protrusions are set at the hollowed-out edges for reinforcement, reducing material usage while ensuring strength and rigidity, effectively reducing weight, and improving heat dissipation; 4. The battery pack adopts a central rigid connection to form a "self-coupling" structure, retaining only a few main fixing points externally, reducing connection points and helping to improve assembly efficiency.

[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0019] Figure 1 This is a side view of the integrated installation and vibration reduction structure of the mining truck battery power system according to an embodiment of the present utility model; Figure 2 for Figure 1 A schematic diagram of the side tie rod bearing vibration damping device shown in the figure; In the attached diagram: 1. Base support; 2. Battery side tie rod bearing vibration damping device I; 3. Battery side tie rod bearing vibration damping device II; 4. Battery side tie rod bearing vibration damping device III; 5. Thermal management side tie rod bearing vibration damping device I; 6. Thermal management side tie rod bearing vibration damping device II; 7. Circular vibration damping device; 8. Pad-type vibration damping device; 9. Self-coupling battery box; 10. Rigid connecting plate; 11. Thermal management unit; 12. Vibration damping assembly; 13. Tie rod; 14. Bearing assembly; 15. Upper limit plate; 121. Upper shock-absorbing pad; 122. Circular step. Detailed Implementation

[0020] The present invention will now be described in further detail.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0022] like Figure 1The embodiment shown depicts a base 1 of an integrated installation and vibration damping structure for a pure electric mining truck battery power system. This base 1 provides the bearing points and positioning references for the power battery system and thermal management unit 11. The battery system and thermal management unit 11 are designed as a single module, sharing the installation references and vibration damping protection of the base 1. Installation references such as lifting holes, limit blocks, and positioning cones are set on the base 1, allowing for complete installation in one lift. The base 1 features a perforated web with holes arranged along the principal stress direction, and reinforcing protrusions around the holes to improve local rigidity.

[0023] The power battery system and thermal management unit 11 of the mining truck are both installed on the base 1. The power battery system includes multiple battery packs, which are fixed to each other by rigid connecting plates 10. The battery boxes within the same battery pack are self-coupled by snap-fit, leaving only a few main fixing points to the outside, reducing the coupling interface with the vehicle body.

[0024] like Figure 1 As shown, the bottom of the base 1 is connected to multiple pad-type shock absorbers 8 by bolts. The pad-type shock absorbers 8 are rubber pads and fixing bolts. The fixing bolts pass through the base 1, rubber pads and frame from top to bottom. The fixing bolts apply preload to the rubber pads to maintain the vertical fixed connection between the base 1 and the frame.

[0025] like Figure 1 As shown, the side of the base 1 is connected to multiple circular shock-absorbing devices by bolts. The circular shock-absorbing devices are rubber pads and fixing bolts. The fixing bolts pass through the frame, rubber pads and base 1 from front to back. The fixing bolts apply a preload to the rubber pads to maintain the lateral fixed connection between the base 1 and the frame.

[0026] like Figure 1 As shown, the battery pack is equipped with battery side tie rod bearing vibration damping device I2, battery side tie rod bearing vibration damping device II3 and battery side tie rod bearing vibration damping device III4. The installation directions of battery side tie rod bearing vibration damping device I2 and battery side tie rod bearing vibration damping device II3 are inclined and intersecting, while the installation direction of battery side tie rod bearing vibration damping device III4 is horizontal and perpendicular to the battery pack. The thermal management unit 11 is also equipped with a thermal management side tie rod bearing vibration damping device I5 and a thermal management side tie rod bearing vibration damping device II6. The thermal management side tie rod bearing vibration damping device I5 is kept horizontal and tilted towards the battery pack side; the thermal management side tie rod bearing vibration damping device II6 is kept horizontal and parallel to the side of the battery pack. The multiple side tie rod bearing vibration damping devices are installed in different directions, forming a vibration damping network to withstand vibration impacts from all directions.

[0027] The structures of battery-side tie rod bearing vibration damping devices I2, II3, III4, I5, and II6 are all identical. Here, we will describe battery-side tie rod bearing vibration damping device I2 as an example.

[0028] Combination Figure 2 As shown, the battery side tie rod bearing vibration damping device I2 includes upper and lower damping pads, a tie rod 13, a bearing assembly 14, and upper and lower limiting plates. The side of the bearing assembly 14 is welded and fixed to the upper end of the tie rod 13; a cylindrical pin is welded to the frame at the corresponding installation position of the bearing assembly 14, and the cylindrical pin is inserted into the inner ring of the bearing assembly 14 to keep the bearing assembly 14 fixedly connected to the frame. The lower end of the tie rod 13 is sequentially fixedly connected to an upper limiting plate 15, an upper damping pad 121, a connecting plate, a lower damping pad, and a lower limiting plate. The connecting plate is fixed to the battery pack and the thermal management unit 11, and a connecting hole is provided in the middle of the connecting plate, through which it is connected to the tie rod 13.

[0029] A raised annular step 122 is provided between the upper shock-absorbing pad 121 and the lower shock-absorbing pad. The upper annular step is integrally formed with the upper shock-absorbing pad 121, and the lower annular step is integrally formed with the lower shock-absorbing pad. The annular step 122 is inserted into the connecting hole and plays a buffering role against shear force.

[0030] In this embodiment, the power battery and thermal management unit 11 are integrated onto the base 1. The base 1 adopts a guide-vibration isolation combination of bearing and damping pad. The base 1 is hollowed out and locally reinforced to achieve lightweight and high rigidity, which meets the impact resistance performance. The battery self-coupling installation reduces fastening and interface, improves the consistency of assembly and disassembly, and suppresses the relative displacement between the cells.

[0031] The working principle of the integrated installation and vibration reduction structure of the battery power system for a pure electric mining truck in this embodiment is as follows: I. Overall Structure The side tie rod bearing vibration damping device is an integrated rigid tie rod structure, mainly including a damping component 12, a central rigid tie rod 13, and an upper rod end bearing assembly 14. All components are connected sequentially along the same axis, and the whole unit is used to transfer tensile and compressive loads between two mechanisms and to isolate and buffer vibrations.

[0032] II. Lower shock-absorbing pad The lower shock-absorbing pad is located at the bottom of the device and is used to fix it to the connecting plate and to achieve some of the vibration reduction and isolation functions.

[0033] Upper and lower limiting plates: Located at the upper and lower ends of the shock-absorbing pad, they are one or more ring-shaped pads or pressure plates used to axially compress and limit the shock-absorbing pad, ensuring that the shock-absorbing pad maintains reliable coaxiality and stability under load.

[0034] With the above structure, the external load is first applied to the damping pad. Before the rigid tie rod 13 body transmits the load, the elastic component deforms first to achieve primary damping.

[0035] III. Rigid Tie Rod 13 Body The rigid tie rod 13 is connected between the lower damping assembly 12 and the upper rod end bearing assembly 14, and is the main load-bearing component of this damping device.

[0036] The main body of the tie rod 13 is a linear rod structure, made in the form of a cylindrical rod; The main body of the tie rod 13 is rigidly connected to the lower shock absorber 12 via a threaded connection. Its upper end is coaxially connected to the rod end bearing assembly 14, which is used to reliably transmit the damped load to the upper mechanism.

[0037] Since the tie rod 13 is a rigid component, it does not expand or contract during operation and only bears tension, compression and a certain degree of bending load, thus ensuring that the force transmission path of the lateral tie rod 13 is clear and the stiffness is controllable.

[0038] IV. Rod end bearing assembly 14 The rod end bearing assembly 14 is arranged on the upper end of the bearing damping device of the side tie rod 13 for hinged connection with the frame structure, while allowing a certain angle of swing to accommodate installation deviations and relative displacement during operation.

[0039] As attached Figure 2 As shown, the rod end bearing assembly 14 has an annular shape and an internal through hole for the pin to pass through; The rod end bearing assembly 14 is a rod end spherical bearing with an inner hole or a similar form. Its outer ring is rigidly connected to the body of the rigid tie rod 13, and its inner ring is hinged to the upper mechanism through a pin. This ensures reliable force transmission while allowing the tie rod 13 to swing relative to the upper mechanism within a certain range, reducing the impact of installation errors and off-center loads on the structure.

[0040] V. Work Process In use, the damping pad is fixed to the connecting plate, and the upper rod end bearing assembly 14 is hinged to the frame by a pin or bolt. The rigid tie rod 13 body is located between the two to form a force transmission path. When relative vibration or impact load occurs between the two structures, the load first deforms and dissipates energy through the lower damping assembly 12, thus achieving primary damping. The damped force is then transmitted from the rigid tie rod 13 body to the upper end bearing assembly 14; The rod end bearing assembly 14 compensates for angular deviations in the installation positions at both ends through its rotation and oscillation capabilities, avoids additional bending moments, and improves the service life and operational stability of the entire shock absorption device.

[0041] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An integrated installation and vibration damping structure for a pure electric mining truck battery power system, characterized in that, include: The base (1) is provided with a bearing point and positioning reference for installing the power battery system and thermal management unit (11); Multiple pad-type shock absorbers (8) are installed between the bottom of the base (1) and the frame; Multiple circular shock absorbers (7) are installed between the side of the base (1) and the frame. And multiple sets of side tie rod bearing vibration damping devices (2,3,4,5,6) installed on the side of the battery pack and thermal management unit (11), the multiple sets of side tie rod bearing vibration damping devices are installed in different directions, together forming a multi-dimensional vibration damping network.

2. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 1, characterized in that, The base (1) is a hollow web structure with holes arranged along the principal stress direction and reinforced protrusions on the edge of the holes to improve local rigidity. The base (1) integrates lifting holes, limiting blocks and positioning cones, so that the power battery system and the thermal management unit (11) form an integral module that can be lifted into place in one go.

3. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 1, characterized in that, The power battery system includes multiple self-coupling battery boxes (9), which are self-coupling connected by buckles and fixed to each other by rigid connecting plates (10). Only a few main fixing points are left to connect to the vehicle body.

4. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 1, characterized in that, The pad-type shock absorber (8) includes a rubber pad and a fixing bolt. The fixing bolt passes through the base (1), the rubber pad and the frame from top to bottom. By applying a pre-tightening force to the rubber pad, the vertical fixation and vibration reduction between the base (1) and the frame are achieved.

5. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 1, characterized in that, The circular shock absorber (7) includes a rubber pad and a fixing bolt. The fixing bolt passes through the frame, the rubber pad and the base (1) from front to back. By applying a pre-tightening force to the rubber pad, the lateral fixation and vibration reduction between the base (1) and the frame are achieved, and the load is evenly distributed and the edge stress is suppressed.

6. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 1, characterized in that, The side tie rod bearing vibration damping devices (2, 3, 4, 5, 6) all include: The upper rod end bearing assembly (14) is used for hinged to the frame; A rigid tie rod (13) is connected at its upper end to the rod end bearing assembly (14); And the lower shock-absorbing component (12), the shock-absorbing component (12) includes upper and lower shock-absorbing pads, and the lower end of the pull rod (13) passes through the upper limit plate (15), the upper shock-absorbing pad (121), the connecting plate fixed on the battery pack, the lower shock-absorbing pad and the lower limit plate in sequence before being fixed.

7. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 6, characterized in that, The upper and lower shock-absorbing pads have raised annular steps (122) on their opposite surfaces. The annular steps (122) are inserted into the connecting holes of the connecting plate to buffer shear force.

8. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 6, characterized in that, The rod end bearing assembly (14) is a rod end spherical bearing. Its outer ring is rigidly connected to the upper end of the rigid tie rod (13), and its inner ring is hinged to the frame through a pin, allowing the tie rod to swing within a certain range to compensate for installation errors and off-center loads.

9. The integrated installation and vibration reduction structure for the battery power system of a pure electric mining truck according to claim 1, characterized in that, The installation directions of the multiple sets of side tie rod bearing vibration damping devices are configured such that: two sets are installed in an inclined and intersecting direction, and the other set is horizontal and perpendicular to the side of the battery pack. The two sets on the thermal management unit are respectively set to be horizontally inclined and horizontally parallel, so as to jointly bear the vibration and impact from all directions.

10. A mining car, characterized in that, It is equipped with an integrated mounting and vibration reduction structure for the battery power system of the pure electric mining truck as described in any one of claims 1 to 9.

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