Construction machine

Abstract

The invention provides a construction machine. The engineering machine comprises a vehicle frame, a vehicle body, a battery system and a connecting assembly. The battery system comprises a bottom support and a battery device arranged on the bottom support. The battery device includes a plurality of battery packs stacked in a height direction, each battery pack including a battery box and at least one battery module disposed in the battery box. The connecting assembly comprises a first connecting structure arranged on the bottom support and a second connecting structure arranged on the battery box. The first connecting structure is connected with the bottom support and the frame. The second connecting structure comprises a connecting rod. The first end of the connecting rod is connected to the side face of the battery box, and the second end of the connecting rod is connected with a vehicle body. The battery system of the engineering machinery can be effectively fixed in different directions, and the stability of the battery system is effectively improved.

Description

Technical Field

[0001] The present disclosure relates to a construction machine. Background Art

[0002] As society pays more attention to environmental protection and carbon conservation and emission reduction, the electrification process of commercial vehicles such as construction machinery is gradually accelerating.

[0003] To achieve extended operating times, construction machinery requires battery packs comprised of multiple stacked battery packs. Construction machinery operates in harsh environments, such as mines and construction sites. Furthermore, the machinery experiences severe vibrations during operation, adversely affecting the stability of the battery packs. Therefore, improving the stability of battery packs in construction machinery is a pressing issue.

[0004] It should be noted that the statements in this background technology section only provide background technology related to the present disclosure and do not necessarily constitute prior art. Summary of the Invention

[0005] The present disclosure provides an engineering machine to improve the stability of a battery device.

[0006] A first aspect of the present disclosure provides an engineering machine, comprising:

[0007] Frame;

[0008] a vehicle body, which is arranged on the vehicle frame;

[0009] A battery system is mounted on the vehicle frame and includes:

[0010] Bottom support;

[0011] A battery device is disposed on the base, and the battery device includes a plurality of battery packs stacked in a height direction, the battery pack including a battery box and at least one battery module disposed in the battery box; and

[0012] Connectivity components, including:

[0013] A first connecting structure, disposed on the bottom bracket and connecting the bottom bracket and the frame; and

[0014] The second connecting structure is arranged on the battery box and includes a connecting rod, a first end of the connecting rod is connected to the side of the battery box, and a second end of the connecting rod is configured to be connected to the vehicle body.

[0015] In some embodiments, the connection assembly includes at least two second connection structures respectively arranged on the sides of different battery boxes, and the connection rods of the at least two second connection structures are connected to different positions of the vehicle body.

[0016] In some embodiments, the battery box includes a bottom plate and side plates extending circumferentially along the bottom plate, the side plates and the bottom plate enclose forming a accommodating cavity for accommodating at least one battery module, the battery box has an opening arranged opposite to the bottom plate, and the bottom plate of the battery box of the battery pack located on the upper layer among the multiple battery packs covers the opening of the battery box of the battery pack located on the lower layer.

[0017] In some embodiments, the battery device further includes a top cover, which covers an opening of a battery box of a battery pack located at a top layer among the plurality of battery packs.

[0018] In some embodiments, at least two reinforcing columns extending in the height direction are provided on the side panel, and a protrusion is provided between at least partially adjacent two of the at least two reinforcing columns, and a groove is provided on the protrusion, and the groove is formed as a connecting groove or a lifting groove.

[0019] In some embodiments, the second connection structure further includes a connection seat connected to the connection groove.

[0020] In some embodiments, the battery system includes at least two battery devices arranged on a base, the connecting assembly also includes a third connecting structure, the battery boxes of the at least two battery devices are connected by the third connecting structure, the at least two battery devices are configured to be arranged in the longitudinal direction of the engineering machinery, and the third connecting structure is configured to extend along the longitudinal direction.

[0021] In some embodiments, battery boxes of at least two battery devices located at the same level are connected via a third connection structure.

[0022] In some embodiments, the engineering machine further includes a shock absorbing structure provided on the first connecting structure.

[0023] In some embodiments, the frame includes a first frame extending along the transverse direction of the engineering machine and a second frame spaced apart from the first frame in the longitudinal direction. The second frame is configured to extend in the height direction, and the bottom support is connected to the first frame and the second frame.

[0024] In some embodiments, the second frame includes an annular structure, and at least a portion of the battery system is disposed within a space enclosed by the annular structure.

[0025] Based on the technical solution provided by the present disclosure, the engineering machinery includes a frame, a body, a battery system and a connection assembly. The battery system includes a base and a battery device arranged on the base. The battery device includes a plurality of battery packs stacked in the height direction, and the battery pack includes a battery box and at least one battery module arranged in the battery box. The connection assembly includes a first connection structure arranged on the base and a second connection structure arranged on the battery box. The first connection structure connects the base and the frame. The second connection structure includes a connecting rod. The first end of the connecting rod is connected to the side of the battery box, and the second end of the connecting rod is configured to be connected to the body. The base of the battery system of the engineering machinery of the embodiment of the present disclosure is connected to the frame through the first connection structure, and the side of the battery box of the battery device of the battery system is connected to the body through the second connection structure. In this way, the bottom and side surfaces of the battery system of the embodiment of the present disclosure are connected and fixed to the body of the engineering machinery, that is, the battery system can be effectively fixed in different directions, effectively improving the stability of the battery system.

[0026] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of this application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation of the present disclosure. In the drawings:

[0028] Figure 1 Schematic diagram of the three-dimensional structure of the battery system of the engineering machinery according to some embodiments of the present disclosure.

[0029] Figure 2 for Figure 1 The main structural diagram of the battery system of the engineering machinery shown is shown.

[0030] Figure 3 for Figure 1 The rear view structural diagram of the battery system of the engineering machinery shown is shown.

[0031] Figure 4 for Figure 1 The schematic diagram of the top view of the battery system of the engineering machinery is shown.

[0032] Figure 5 for Figure 1 A side structural diagram of a battery system for engineering machinery is shown.

[0033] Description of reference numerals:

[0034] 1. Frame; 11. First frame; 12. Second frame;

[0035] 2. Battery system; 21. Bottom bracket; 22. Battery assembly; 22A. First battery assembly; 22B. Second battery assembly; 221. Battery pack; 2211. Battery box; 2211a. Bottom plate; 2211b. Side plate; 2211c. Reinforcement column; 2211d. Protrusion; A. Groove; 222. Top cover;

[0036] 3. Second connecting structure;

[0037] 4. The third connecting structure;

[0038] 5. Shock-absorbing structure. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0040] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The technology, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be considered as part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be subsequently positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device may also be positioned in other different ways, and the spatially relative descriptions used herein are interpreted accordingly.

[0042] With the continuous development of electrification technology in construction machinery, the demand for power battery systems is increasing, and with it comes the need for products equipped with large-tonnage, high-capacity, and high-voltage battery systems. Currently, there are few construction machinery products on the market equipped with ultra-large-capacity battery systems, most of which are within 1000kWh. Battery systems under 1000kWh are relatively simple to install. However, for battery systems above 1000kWh, the heavy weight and large size pose significant challenges in installation and subsequent disassembly and maintenance. Furthermore, due to the harsh operating environment of construction machinery, the stability of the battery system is also a current challenge.

[0043] refer to Figures 1 to 5 , some embodiments of the present disclosure provide engineering machinery, including a frame 1, a vehicle body, a battery system 2 and a connecting assembly. The battery system 2 includes a base 21 and a battery device 22 arranged on the base 21. The battery device 22 includes a plurality of battery packs 221 stacked in the height direction Z, and the battery pack 221 includes a battery box 2211 and at least one battery module arranged in the battery box 2211. The connecting assembly includes a first connecting structure arranged on the base 21 and a second connecting structure 3 arranged on the battery box 2211. The first connecting structure connects the base 21 and the frame 1. The second connecting structure 3 includes a connecting rod. The first end of the connecting rod is connected to the side of the battery box 2211, and the second end of the connecting rod is configured to be connected to the vehicle body.

[0044] refer to Figure 1 In some embodiments, the engineering machine includes a frame 1 and a battery system 2 disposed on the frame 1. The battery system 2 includes a base 21 connected to the frame 1 and a battery device 22 disposed on the base 21. Figure 1In the embodiment shown, two battery devices 22 are provided on the base 21, namely a first battery device 22A and a second battery device 22B. Each battery device 22 includes a plurality of battery packs 221 stacked in the height direction Z. Figure 1 In the illustrated embodiment, the first battery device 22A includes four battery packs 221 stacked in the height direction Z, and the second battery device 22B includes five battery packs 221 stacked in the height direction Z.

[0045] The battery assembly 22 is connected to the base bracket 21, which is connected to the vehicle frame 1 via a first connection structure. Specifically, the first connection structure includes bolts and other connectors. In other words, the battery system of the present embodiment is connected to the vehicle frame 1 through the first connection structure. The bottom surface referred to here refers to the bottommost surface of the battery system 2. Specifically, the base bracket 21 is the bottommost component of the battery system 2, and the bottom surface of the base bracket 21 constitutes the bottom surface of the battery system.

[0046] Further, refer to Figure 1 , a second connecting structure 3 is also provided on the battery box 2211 of the battery device of the embodiment of the present disclosure. The second connecting structure 3 is used to connect to the vehicle body. The vehicle body is not shown in the figure. The vehicle body here refers to the structure of the engineering machinery located on the side of the battery device. The vehicle body is located on the upper side of the frame. For example, the vehicle body can be a support beam, a battery cover, etc. The second connecting structure 3 includes a connecting rod 31, and the connecting rod 31 extends roughly along the transverse direction Y of the engineering machinery. In this way, the battery system of the embodiment of the present disclosure is connected to the vehicle body on the side through the second connecting structure. The side here refers to the surfaces on both sides of the battery system 2 in the transverse direction Y. Specifically, the two sides of the battery system 2 in the transverse direction Y are the side panels of the battery box 2211, and the surfaces of the side panels of the battery box 2211 constitute the sides of the battery system.

[0047] The frame is part of the chassis. During installation, the bottom surface of the battery system will be connected to the frame. In some embodiments, the frame and body are an integral structure, with the frame generally located at the bottom to support other components of the construction machine. The body is located above the frame; in other embodiments, the frame and body are separate structures. Therefore, the frame and body described in the embodiments of this disclosure refer to different locations on the construction machine's body, and do not limit whether the frame and body are integrated or separate.

[0048] The base 21 of the battery system of the engineering machinery in the embodiment of the present disclosure is connected to the frame 1 through a first connecting structure, and the side of the battery box of the battery device of the battery system is connected to the vehicle body through a second connecting structure 3. In this way, the bottom and side surfaces of the battery system in the embodiment of the present disclosure are connected and fixed to the vehicle body of the engineering machinery, that is, the battery system can be effectively fixed in different directions, effectively improving the stability of the battery system.

[0049] refer to Figures 1 to 5 In some embodiments, the connection assembly includes at least two second connection structures 3 respectively provided on different battery boxes. The connection rods of the at least two second connection structures 3 are connected to different positions of the vehicle body.

[0050] Specifically, if Figure 1 As shown, a second connecting structure 3 is connected to the side panel of the battery box of the topmost battery pack 221 of the second battery device 22B. A second connecting structure 3 is also connected to the side panel of the battery box of the second battery pack 221 of the second battery device 22B. In other words, the two second connecting structures 3 are respectively arranged at different heights. Furthermore, the second connecting structure 3 connected to the battery box of the topmost battery pack 221 is located approximately in the middle of the side panel, while the second connecting structure 3 connected to the battery box of the second top battery pack 221 is located near the end of the side panel. This results in the at least two second connecting structures 3 of the battery system of the present embodiment being respectively located at different positions in the height direction Z and / or at different positions in the longitudinal direction X.

[0051] The connecting rods of at least two second connecting structures 3 of the embodiment of the present disclosure are connected to different positions of the vehicle body, further enhancing the connection reliability between the side of the battery system and the body, and effectively avoiding the problem of reliability failure caused by failure of individual connecting structures.

[0052] In some embodiments, the second connection structure 3 is disposed closer to the top of the battery device to further improve stability.

[0053] refer to Figure 1 In some embodiments, the battery box 2211 includes a bottom plate 2211b and side plates 2211a extending circumferentially of the bottom plate 2211b. The side plates 2211a and the bottom plate 2211b together form a cavity for accommodating at least one battery module. The battery box 2211 has an opening disposed opposite the bottom plate 2211b. The bottom plates 2211b of the battery boxes 2211 of the battery packs located in the upper layer of the multiple battery packs 221 cover the openings of the battery boxes 2211 of the battery packs located in the lower layer.

[0054] refer to Figure 1The battery box 2211 has a square structure and includes a bottom plate 2211b and a side plate 2211a. The side plate 2211a extends in the circumferential direction of the bottom plate 2211b and is closed in the circumferential direction to enclose a storage cavity. The battery module is arranged in the storage cavity. The battery module includes a battery module. The opening of the battery box 2211 is arranged opposite to the bottom plate 2211b. Specifically, the opening of the battery box 2211 is located at the top of the battery box 2211. The side plate 2211a of the battery box 2211 includes a side plate body extending in the height direction Z and an upper edge arranged at the top end of the side plate body and extending outward. The upper edge is approximately perpendicular to the side plate body. The bottom end of the side plate body is connected to the bottom plate 2211b, and the portion of the bottom plate 2211b located outside the side plate body forms the lower edge. When two adjacent battery boxes are connected, the lower edge of the bottom plate 2211b of the upper battery box is connected to the upper edge of the lower battery box via a connector.

[0055] When multiple battery packs are stacked, the battery boxes 2211 of the multiple battery packs are stacked so that the bottom plate 2211b of the battery box 2211 of the upper battery pack covers the opening of the battery box of the lower battery pack. That is to say, the bottom plate of the upper battery box in the embodiment of the present disclosure is formed as the cover of the battery box of the lower battery pack, thereby eliminating the space occupied by the cover in the height direction and improving the energy density of the battery system.

[0056] In some embodiments, the battery system 2 further includes a top cover 222. The top cover 222 covers an opening of a battery box of a battery pack located at the top layer among the multiple battery packs.

[0057] Specifically, if Figure 1 As shown, the top cover 222 is connected to the upper edge of the battery box of the topmost battery pack.

[0058] In the battery system 2 of the disclosed embodiment, only the topmost battery pack's battery box opening is sealed with a top cover 222. The openings of the battery boxes in the other layers are sealed with the bottom plates of the upper battery boxes, thereby reducing the weight of the entire battery system and saving cover material, thereby lowering costs.

[0059] refer to Figure 5 In some embodiments, the side plate 2211a is provided with at least two reinforcement columns 2211c extending along the height direction Z. A protrusion 2211d is provided between at least two adjacent reinforcement columns 2211c among the at least two reinforcement columns 2211c. The protrusion 2211d is provided with a groove A, which is formed as a connection groove or a lifting groove.

[0060] like Figure 5As shown, in some embodiments, the reinforcing column 2211c extends downward from the top to the bottom. Specifically, the top of the reinforcing column 2211c is connected to the upper edge, and the bottom end of the reinforcing column 2211c is connected to the lower edge. In this way, the weight of the upper battery pack is directly transferred to the bottom plate of the lower battery pack through the reinforcing column 2211c, and thus the reinforcing column 2211c can strengthen the strength of the battery box.

[0061] exist Figure 5 In the illustrated embodiment, six reinforcing columns 2211c are provided on one surface of the side panel, and every two reinforcing columns 2211c are arranged adjacent to each other and a protrusion 2211d is provided between the two reinforcing columns 2211c. The protrusion 2211d occupies a larger area, further enhancing the strength of the battery box.

[0062] The protrusion 2211d is provided with a plurality of connection holes, and the protrusion 2211d is provided with a groove A. The plurality of connection holes are provided around the groove A. In some embodiments, the groove A is formed as a hanging groove. Since the battery pack of this embodiment needs to be stacked layer by layer, the battery box of the battery pack is provided with a hanging groove, which can facilitate the hanging equipment to hang the battery pack through the hanging groove. In other embodiments, the groove A is formed as a connection groove, for example, Figure 5 The groove of the protrusion at the leftmost end of the battery box of the battery pack located at the second top layer is formed as a connecting groove, and the connecting seat of the second connecting structure can be snapped into the connecting groove to be connected with the battery box.

[0063] In some embodiments, reference Figure 3 The second connection structure 3 further includes a connection seat 32. The connection seat 32 is connected to the connection groove.

[0064] In some embodiments, the battery system 2 includes at least two battery assemblies 22 disposed on a base 21. The connection assembly further includes a third connection structure 4. The battery boxes of two adjacent battery assemblies 22 of the at least two battery assemblies 22 are connected via the third connection structure 4. The at least two battery assemblies 22 are arranged in a longitudinal direction X of the construction machine, and the third connection structure 4 is configured to extend along the longitudinal direction X.

[0065] refer to Figure 1 and Figure 5 In some embodiments, the battery boxes of at least two battery assemblies 22 located at the same level are connected via a third connecting structure 4. Specifically, the ends of the third connecting structure 4 are respectively connected to the connection holes on the protrusions of the battery boxes of the two battery assemblies 22. The third connecting structure 4 includes a connecting plate and a vibration damping pad.

[0066] The battery boxes of two adjacent battery devices 22 of the disclosed embodiment are connected by a third connecting structure 4, which effectively ensures that the two battery devices 22 stagger and swing left and right under strong torque conditions, thereby ensuring the structural stability of the battery system. In addition, the disclosed embodiment divides all the battery packs of the battery system into a first battery device 22A and a second battery device 22B respectively arranged in the longitudinal direction X of the engineering machinery. Compared with simply stacking in the height direction, this avoids the problem of easy tipping due to excessive stacking resulting from an excessively high center of gravity. Furthermore, at least two battery devices are arranged in the longitudinal direction X, so that the weight of the battery system is dispersed in the longitudinal direction instead of being concentrated in one place, which is also more conducive to the load uniformity of the frame of the engineering machinery.

[0067] Moreover, the battery system of the embodiment of the present disclosure includes at least two battery devices spaced apart on the base, and the number of stacked battery packs of the at least two battery devices is different, wherein the number of battery packs of the first battery device 22A located further forward in the longitudinal direction X of the engineering machinery is smaller than the number of battery packs of the second battery device 22B located on the rear side of the first battery device 22A. This arrangement is specially provided to further improve stability.

[0068] Specifically, the number of battery packs of the first battery device 22A located closer to the front is set to be smaller, and the number of battery packs of the second battery device 22B located closer to the middle is set to be larger. This makes the center of gravity of the entire battery system closer to the center of gravity of the construction machinery, avoids the problem of overloading, and further improves stability.

[0069] In some embodiments, the engineering machine further includes a shock absorbing structure 5 provided on the first connecting structure.

[0070] Specifically, the shock absorbing structure 5 is provided on the first connection structure. For example, when the first connection structure is a bolt, the bolt is a bolt with a shock absorbing structure.

[0071] The base 21 of the disclosed embodiment is connected to the vehicle frame 1 via a first connection structure with a shock-absorbing structure 5 , thereby absorbing part of the vibration and effectively reducing the adverse effects of the vibration on the battery system.

[0072] like Figures 1 to 4 As shown, in some embodiments, the frame 1 includes a first frame 11 extending along the transverse direction Y of the engineering machine and a second frame 12 spaced apart from the first frame 11 in the longitudinal direction X. The second frame 12 is configured to extend in the height direction Z, and the base 21 is load-bearingly connected to the first frame 11 and the second frame 12.

[0073] The base 21 of the battery system 2 of the embodiment of the present disclosure is carried on the first frame 11 and the second frame 12, and the first frame 11 and the second frame 12 are spaced apart in the longitudinal direction X. In this way, the base 21 is supported at different positions in the longitudinal direction, thereby further improving the stability of the battery system.

[0074] refer to Figure 1 In some embodiments, the second frame 12 includes an annular structure. At least a portion of the battery system is disposed within the space enclosed by the annular structure. Thus, the annular second frame 12 not only supports the battery system 2 but also serves to limit the battery system.

[0075] The following is based on Figures 1 to 5 The structure of an engineering machine according to a specific embodiment of the present disclosure is described in detail.

[0076] like Figure 1 As shown, the battery system 2 of the engineering machinery of the embodiment of the present disclosure includes a battery device 22. The battery device 22 includes a multi-layer stacked battery pack 221, and a protrusion 2211d is arranged on the battery box of the battery pack to meet functional requirements such as fixed lifting. The battery pack is placed on the base 21 through multi-layer stacking, and the base 21 is fixed to the vehicle frame through a shock-absorbing structure 5 and bolts and other components. The two sides of the battery pack are connected to the vehicle through a second connecting structure 3. The two battery devices 22A and 22B are arranged in the direction of the front of the vehicle and are connected by a third connecting structure 4, which can enable the battery system to be effectively fixed in different directions, ensure the mechanical reliability and maintainability in harsh working conditions such as mines, and improve the mechanical safety of the battery system.

[0077] like Figure 1 As shown, the battery device 22A on the left is a four-layer battery pack, and the battery device 22B on the right is a five-layer battery pack. The bottom plate of the upper battery pack serves as the cover of the lower battery pack, which is stacked layer by layer. Only the battery box of the top battery pack is equipped with a top cover 222, which saves the material of the battery pack top cover and reduces the weight of the entire battery system.

[0078] Each battery pack has a protrusion 2211d welded to the battery box. The protrusion 2211d has a lifting slot A and a bolt hole. A single battery pack can be lifted through the lifting slot A. The protrusions on the two battery devices are connected to the vehicle frame via a second connection structure 3 with vibration damping, ensuring the structural reliability of the battery system in the lateral direction Y. The battery packs on the two battery devices are connected via two third connection structures 4 extending along the longitudinal direction X, ensuring that the two battery devices can swing left and right in an alternating manner under strong torque conditions, thereby ensuring the structural stability of the battery system. In addition, the two battery devices are fixed to the same base bracket 21 by bolts, which makes it convenient to lift the battery system as a whole on the frame and also facilitates its overall disassembly during maintenance. The base bracket 21 is connected to the frame via bolts with vibration damping.

[0079] It can be seen that the battery system of this embodiment is fixedly connected in the X, Y, and Z directions respectively, thereby ensuring the structural reliability of the battery system. The two battery devices are simultaneously fixed on one base, facilitating overall installation and removal.

[0080] Furthermore, the present disclosure is not limited to the integrated design of two battery units. Based on the fixed design scheme of this embodiment, integrated design modules of multiple battery units can be deployed according to the overall vehicle layout space to meet the power requirements of the main construction machinery product. For power battery systems with multiple battery units, the layout of the battery pack can be flexibly adjusted to the limited space of the entire vehicle.

[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and not to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solutions of the present disclosure, which should all be included in the scope of the technical solutions requested for protection in the present disclosure.

Claims

1. An engineering machine, characterized in that: include: Frame (1); A vehicle body, arranged on the vehicle frame (1); A battery system (2) is arranged on the vehicle frame (1) and comprises: Bottom support (21); A battery device (22) is arranged on the base (21), and the battery device (22) includes a plurality of battery packs (221) stacked in a height direction (Z), the battery pack (221) including a battery box (2211) and at least one battery module arranged in the battery box (2211); and Connectivity components, including: a first connecting structure, disposed on the base (21) and connecting the base (21) and the vehicle frame (1); and A second connecting structure (3) is provided on the battery box (2211) and comprises a connecting rod (31), a first end of the connecting rod (31) being connected to a side surface of the battery box (2211), and a second end of the connecting rod (31) being configured to be connected to the vehicle body.

2. The construction machine according to claim 1, characterized in that: The connection assembly comprises at least two second connection structures (3) respectively arranged on the sides of different battery boxes, and the connection rods of the at least two second connection structures (3) are connected to different positions of the vehicle body.

3. The construction machine according to claim 1, characterized in that: The battery box (2211) comprises a bottom plate (2211b) and side plates (2211a) extending along the circumference of the bottom plate (2211b); the side plates (2211a) and the bottom plate (2211b) enclose a cavity for accommodating the at least one battery module; the battery box (2211) has an opening arranged opposite to the bottom plate (2211b); the bottom plates (2211b) of the battery boxes (2211) of the battery packs located in the upper layer among the multiple battery packs (221) cover the openings of the battery boxes (2211) of the battery packs located in the lower layer.

4. The construction machine according to claim 3, characterized in that: The battery device (22) further comprises a top cover (222), wherein the top cover (222) covers an opening of a battery box of a battery pack located at the top layer among the multiple battery packs.

5. The construction machine according to claim 3, characterized in that: At least two reinforcing columns (2211c) extending in a height direction (Z) are provided on the side plate (2211a), a protrusion (2211d) is provided between at least partially adjacent two reinforcing columns (2211c) of the at least two reinforcing columns (2211c), a groove (A) is provided on the protrusion (2211d), and the groove (A) is formed as a connection groove or a lifting groove.

6. The construction machine according to claim 5, characterized in that: The second connection structure (3) further comprises a connection seat (32), and the connection seat (32) is connected to the connection groove.

7. The construction machine according to any one of claims 1 to 6, characterized in that: The battery system (2) includes at least two battery devices (22) arranged on the base (21), and the connection assembly further includes a third connection structure (4). The battery boxes of the at least two battery devices (22) are connected via the third connection structure (4). The at least two battery devices (22) are configured to be arranged in a longitudinal direction of the engineering machine, and the third connection structure (4) is configured to extend along the longitudinal direction.

8. The engineering machine according to claim 7, characterized in that: The battery boxes of at least two battery devices (22) located at the same level are connected via the third connection structure (4).

9. The construction machine according to any one of claims 1 to 6, characterized in that: The engineering machinery further comprises a shock absorbing structure (5) arranged on the first connecting structure.

10. The construction machine according to any one of claims 1 to 6, characterized in that: The vehicle frame (1) comprises: A first frame (11) extending in the transverse direction of the engineering machine; The second frame (12) is spaced apart from the first frame (11) in the longitudinal direction and the second frame (12) is configured to extend in the height direction (Z), and the bottom bracket (21) is supported and connected to the first frame (11) and the second frame (12).

11. The construction machine according to claim 10, characterized in that: The second vehicle frame (12) comprises an annular structure, and at least a portion of the battery system is arranged in a space enclosed by the annular structure.

Images