Arrangement structure of loading machine battery pack

Abstract

The embodiment of the utility model relates to an arrangement structure of a loading machine battery pack, and the arrangement structure comprises a battery pack, the bottom side edge of which is provided with a side wing plate; the battery bin is provided with a battery pack containing cavity, at least two transversely arranged battery fixing plates are arranged at the bottom of the battery pack containing cavity, the battery fixing plates are provided with fixing interfaces, the fixing interfaces are connected with the side wing plates, and the battery bin is connected with a chassis of the loading machine; the battery support at least comprises a layer of sub-support, the sub-support is provided with two subareas, each subarea corresponds to one battery pack, the sub-support comprises a top frame, a bottom frame and connecting columns, the side faces of the connecting columns are connected with the top frame and the bottom frame, and the bottom frame of the sub-support is connected with the side wing plates of the battery packs; the bottom of the battery bracket is connected with the top of the battery bin; the problems that the number of battery packs is large, the battery packs are installed on the rear side of the whole loader, the space is limited, and the rear view and the departure angle of the loader are affected can be solved.

Description

Technical Field

[0001] This application relates to the field of high-voltage battery pack technology for loaders, and more specifically, to an arrangement structure of a battery pack for loaders. Background Technology

[0002] Loaders are an important component of construction machinery, primarily used for shoveling, loading, digging, and transporting loose materials. Pure electric loaders are a significant branch of the loader industry, and users are increasingly demanding longer driving ranges from them. Increasing battery capacity is a crucial measure to enhance the driving range of pure electric loaders, especially large-capacity batteries, which can significantly improve their range. The high-voltage battery pack of a loader is often located at the rear of the machine, providing both power and counterweight. However, space constraints have made the placement of large-capacity high-voltage batteries a persistent challenge.

[0003] The following problems exist with the current common high-voltage battery pack layouts: 1. Large-capacity batteries are difficult to arrange due to space limitations: Current high-voltage battery packs are standard configurations. When the number exceeds eight, layout becomes difficult due to limitations in the width, height, rear visibility, and departure angle of the space behind the loader. 2. Weak rear impact protection for high-voltage battery packs: When the loader reverses, it is prone to encountering various obstacles, leading to deformation of the rear of the loader and even damage to the high-voltage battery packs. 3. Poor maintenance convenience: Due to space constraints, the battery packs are difficult to maintain. Summary of the Invention

[0004] This application addresses the aforementioned deficiencies in the prior art. There is a need for a battery pack arrangement structure for loaders that can solve the problem of a large number of high-capacity, high-voltage battery packs, which restricts installation space and affects the use of the loader.

[0005] A first aspect of this application provides an arrangement structure for a loader battery pack, the arrangement structure comprising: a battery pack with a side wing plate at its bottom side edge; a battery compartment with a battery pack receiving cavity, the bottom of which has at least two horizontally arranged battery fixing plates, each battery fixing plate having a fixing interface connected to the side wing plate, the battery compartment being connected to the chassis of the loader; a battery bracket including at least one sub-bracket, the sub-bracket having two sections, each section corresponding to one battery pack, the sub-bracket including a top frame and a bottom frame, and connecting columns on the sides connecting the top frame and the bottom frame, the bottom frame of the sub-bracket being connected to the side wing plate of the battery pack; and the bottom of the battery bracket being connected to the top of the battery compartment.

[0006] In some embodiments, when the battery bracket includes two or more sub-brackets, the multi-layer sub-brackets are stacked, and adjacent sub-brackets are connected by diagonal braces. The first end of the diagonal brace is connected to the bottom frame of the upper sub-bracket, and the second end of the diagonal brace is connected to the bottom frame of the lower sub-bracket.

[0007] In some embodiments, the sub-support is provided with an upper L-shaped fixing plate and a lower L-shaped fixing plate, and the upper L-shaped fixing plate of the lower sub-support and the lower L-shaped fixing plate of the upper sub-support are connected.

[0008] In some embodiments, a shock absorber is provided at the bottom of the battery bracket, and the battery bracket is connected to the top of the battery compartment via the shock absorber.

[0009] In some embodiments, a wiring harness constraint groove is provided below the battery compartment, and the wiring harness constraint groove is fixedly connected to the battery fixing plate at the bottom of the battery compartment.

[0010] In some embodiments, the top of the battery compartment is provided with a top plate, and the top plate is provided with a fixing interface, which communicates with the battery pack receiving cavity.

[0011] In some embodiments, a connecting plate is provided at the front end of the battery compartment body, the connecting plate being used to connect to the chassis of the loader.

[0012] In some embodiments, the rear end of the battery compartment is provided with a crash beam.

[0013] In some embodiments, the battery compartment is provided with a charging port.

[0014] In some embodiments, a foot pedal structure is provided at the bottom of the battery compartment.

[0015] The battery pack arrangement structure for loaders provided in various embodiments of this application includes a battery compartment and a battery bracket. The battery compartment can accommodate multiple battery packs and is connected to the loader. When there are more battery packs, they are placed on the battery bracket, which is connected to the battery compartment. The battery compartment is connected to the chassis of the loader. This allows multiple battery packs to be placed horizontally under the loader, solving the problems of limited space and reduced rear visibility and departure angle when a large number of battery packs are installed at the rear of the loader. It also improves the overall impact resistance of the battery pack arrangement structure, preventing deformation of the battery pack arrangement structure and damage to the battery packs when encountering obstacles during the loader's forward or reverse movement. In addition, it facilitates the operator's maintenance of the battery packs. Attached Figure Description

[0016] In drawings that are not necessarily drawn to scale, the same reference numerals may describe similar parts in different views. The same reference numerals with or without letter suffixes may indicate different instances of similar parts. The drawings generally illustrate various embodiments by way of example rather than limitation and are used, together with the description and claims, to illustrate the claimed embodiments. Where appropriate, the same reference numerals are used in all drawings to refer to the same or similar parts. Such embodiments are illustrative and not intended to be exhaustive or exclusive embodiments of the apparatus or method.

[0017] Figure 1 This diagram illustrates the structure of a battery pack according to an embodiment of this application.

[0018] Figure 2 A schematic diagram showing the overall structure of the battery compartment according to an embodiment of this application is provided.

[0019] Figure 3 This diagram illustrates the internal structure of the battery compartment according to an embodiment of this application.

[0020] Figure 4 This diagram shows the overall structure of the battery holder according to an embodiment of the present application;

[0021] Figure 5 A partial structural diagram of the battery compartment according to an embodiment of this application is shown.

[0022] The components are as follows: 1-Battery pack; 2-Side wing plate; 3-Battery compartment; 4-Battery fixing plate; 5-Sub-bracket; 6-Top frame; 7-Bottom frame; 8-Connecting column; 9-Diagonal tie rod; 10-Upper L-shaped fixing plate; 11-Shock absorber; 12-Wire harness constraint groove; 13-Top plate; 14-Inspection port; 15-Connecting plate; 16-Traction pin interface; 17-Anti-collision beam; 18-Charging port; 19-Foot pedal structure. Detailed Implementation

[0023] To enable those skilled in the art to better understand the technical solutions of this application, the application will be described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments of this application will be further described in detail below with reference to the accompanying drawings and specific examples, but these are not intended to limit the scope of this application.

[0024] The terms “first,” “second,” and similar terms used in this application do not indicate any order, quantity, or importance, but are merely used for distinction. Terms such as “including” or “comprising” mean that the element preceding the term covers the element listed after the term, and do not exclude the possibility of covering other elements as well.

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, according to an embodiment of this application, a battery pack arrangement structure for a loader is provided. The arrangement structure includes: a battery pack 1 with a side wing plate 2 at the bottom edge; a battery compartment 3 with a battery pack receiving cavity, at least two horizontally arranged battery fixing plates 4 at the bottom of the battery pack receiving cavity, the battery fixing plates 4 having fixing interfaces connected to the side wing plate 2, the battery compartment 3 being connected to the chassis of the loader; and a battery bracket including at least one sub-bracket 5, the sub-bracket 5 having two partitions, each partition corresponding to one battery pack 1, the sub-bracket 5 including a top frame 6 and a bottom frame 7, and connecting columns 8 connecting the top frame 6 and the bottom frame 7 on the side, the bottom frame 7 of the sub-bracket 5 being connected to the side wing plate 2 of the battery pack 1; and the bottom of the battery bracket being connected to the top of the battery compartment 3.

[0026] The loader's battery pack weighs about 200kg and is also quite large, so it takes up a lot of space when installed.

[0027] The battery compartment 3 is fixedly connected to the battery pack 1 via a battery fixing plate 4. The battery fixing plate 4 can be made of high-strength thick steel plate and may have a fixing interface for bolting connection between the battery fixing plate 4 and the battery pack 1, thereby improving the stability of the battery pack 1. The battery compartment 3 can be a welded component, made of multiple steel plates or bent plates welded together. The battery fixing plate 4, together with the strong protection of the internal frame of the battery compartment 3, greatly enhances the impact resistance of the high-voltage battery pack 1.

[0028] The battery compartment 3 can be equipped with two, three, or four battery fixing plates 4 to secure multiple battery packs 1. The multiple battery fixing plates 4 are arranged horizontally to minimize the vertical space occupied by the multiple battery packs 1. When four battery packs 1 are located in the battery compartment 3, three battery fixing plates 4 can be correspondingly provided, with one battery fixing plate 4 fixed to two battery packs 1, and the other two battery fixing plates 4 each connected to one battery pack 1.

[0029] The battery bracket includes at least one sub-bracket 5. The sub-bracket 5 includes a top frame 6, a bottom frame 7, and a connecting column 8. The top frame 6 can improve the overall rigidity of the sub-bracket 5, providing a solid housing space for the battery pack 1 and avoiding the impact of external collisions on the battery pack 1.

[0030] The battery compartment 3 is connected to the loader's chassis, and the battery bracket is connected to the battery compartment 3, so that the entire arrangement structure is fixed to the loader's chassis. This allows multiple battery packs 1 to be fixed under the loader, rather than at the rear, solving the problems of space constraints and impact on the loader's rear visibility and departure angle when installing multiple battery packs 1 at the rear.

[0031] like Figure 4As shown, in some embodiments, when the battery bracket includes two or more sub-brackets 5, the multiple sub-brackets 5 are stacked, and adjacent sub-brackets 5 are connected by diagonal braces 9. The first end of the diagonal brace 9 is connected to the bottom frame 7 of the upper sub-bracket 5, and the second end of the diagonal brace 9 is connected to the bottom frame 7 of the lower sub-bracket 5. The required number of sub-brackets 5 can be selected according to the number of battery packs 1 to enable multiple battery packs 1 to power the loader. When multiple sub-brackets 5 are provided, the bottom frame 7 and top frame 6 of adjacent sub-brackets 5 separate two longitudinally adjacent battery packs 1, ensuring that the wiring harnesses (including charging harnesses and discharging harnesses, etc.), pipes, and other components of the two longitudinally adjacent battery packs 1 are provided with space for wiring. The diagonal braces 9 enhance the stability and reliability of the connection between adjacent sub-brackets 5.

[0032] Sub-support 5 can be constructed from welded square tubular profiles, providing sufficient structural rigidity. It also features an interface for the high-voltage battery pack 1, facilitating connection to the side wing plate 2 of the battery pack 1. Each layer of sub-support 5 can accommodate two battery packs 1, maximizing space utilization. For example... Figure 4 As shown, the base frame 7 of the sub-support 5 may include side square tubes, middle spacer square tubes, and supporting short square tubes at corresponding positions of each battery pack 1. The fixed frame of the sub-support 5 is a square structure composed of four side square tubes.

[0033] like Figure 4 As shown, in some embodiments, the sub-support is provided with an upper L-shaped fixing plate 10 and a lower L-shaped fixing plate, and the upper L-shaped fixing plate 10 of the lower sub-support and the lower L-shaped fixing plate of the upper sub-support are connected. The L-shaped fixing plate 10 can be provided on the side of the sub-support 5, and the L-shaped fixing plates of two adjacent sub-support layers 5 can be connected by bolts, so as to tightly connect the two adjacent sub-support layers 5. In this application, the L-shaped fixing plate and the diagonal tie 9 make the connection between the two adjacent sub-support layers 5 tighter, avoiding shaking and displacement between the loaders during operation.

[0034] like Figure 4 As shown, in some embodiments, a shock absorber 11 is provided at the bottom of the battery bracket, and the battery bracket is connected to the top of the battery compartment 3 through the shock absorber 11. The connection between the shock absorber 11 and the top of the battery compartment 3 can reduce the force exerted on the battery compartment 3 by the vehicle during braking, starting, and other processes.

[0035] like Figure 5As shown, in some embodiments, a wiring harness constraint groove 12 is provided below the battery compartment 3, and the wiring harness constraint groove 12 is fixedly connected to the battery fixing plate 4 at the bottom of the battery compartment 3. In some embodiments, the wiring harness constraint groove 12 is formed by a bent plate. The wiring harness constraint groove 12 and the battery fixing plate 4 can be connected by bolts. The wiring harness or pipes passing through the battery compartment 3 are restrained in the wiring harness constraint groove 12, and then the wiring harness is uniformly gathered into the wiring harness constraint groove 12, and the outlet can be led to other locations. This can protect the wiring harness and pipes, and also reduce wiring harness tangling. It can also facilitate the inspection and maintenance of the wiring harness or pipes, avoiding the problem of complicated operations required for the replacement or repair of the wiring harness or pipes.

[0036] like Figure 2 As shown, in some embodiments, the top of the battery compartment 3 is provided with a top plate 13, and the top plate 13 has a fixing interface that communicates with the battery pack receiving cavity. The top plate 13 can be connected to the battery bracket, facilitating the removal and installation of the battery bracket, and enabling replacement and / or maintenance of the battery pack 1 within the battery compartment 3. The fixing interface communicates with the battery pack receiving cavity. The shock absorber includes an upper shock absorber and a lower shock absorber, each comprising a central steel sleeve and a disc-shaped elastic block fitted onto the steel sleeve. The steel sleeves of the upper and lower shock absorbers are connected, with the lower shock absorber located inside the battery pack receiving cavity and the upper shock absorber located at the top of the battery pack receiving cavity, improving the stability of the connection.

[0037] like Figure 2 As shown, in some embodiments, inspection ports 14 are provided on both sides of the top plate 13 at the top of the battery compartment 3. This allows for the inspection and maintenance of the battery pack 1 inside the battery compartment 3.

[0038] like Figure 2 As shown, in some embodiments, the front end of the battery compartment 3 is provided with a connecting plate 15, which is used to connect to the rear frame of the loader chassis. The connecting plate 15 and the rear frame can be connected by bolts or other means, and the entire battery compartment 3 can be fixed to the chassis through the connecting plate 15. After the battery compartment 3 is connected to the rear frame, the connecting plate is vertical relative to the ground, and the battery bracket is located above the battery compartment 3.

[0039] like Figure 2 As shown, in some embodiments, the rear end of the battery compartment 3 is provided with a traction pin interface 16. The entire battery pack 1 arrangement structure has multiple battery packs 1, the weight of one battery pack 1 is approximately 200 kg, and the weight of five battery packs 1 can reach 1000 kg. By providing the traction pin interface 16, it is convenient to connect and pull the arrangement structure of the battery packs 1 during towing, which can improve the overall towing effect.

[0040] like Figure 3As shown, in some embodiments, a crash beam 17 is provided at the rear end of the battery compartment 3. The crash beam 17 can be constructed of a round tube and a steel plate, and is a welded component. The crash beam 17 can be assembled onto the battery compartment 3 by bolts. This can improve the impact resistance of the rear of the battery compartment 3 and prevent the loader from easily encountering various obstacles when reversing, which could lead to deformation of the rear of the loader or even damage to the high-voltage battery pack 1.

[0041] like Figure 2 As shown, in some embodiments, the battery compartment 3 is provided with a charging port 18. The battery inside the battery compartment 3 can be charged through the charging port 18. In addition, the battery compartment 3 may also be provided with a low-voltage main power switch interface and a rear combination lamp interface, etc. The charging port 18 is located on both sides or the rear side of the battery compartment 3, and can be flexibly adjusted according to the charging position requirements. The charging port 18 and the low-voltage main power switch can be arranged on the same side, or they can be arranged on opposite sides.

[0042] like Figure 3 As shown, in some embodiments, the bottom of the battery compartment 3 is provided with a foot pedal structure 19. The foot pedal structure 19 can be located on both sides of the bottom of the battery compartment 3, allowing for convenient use by personnel. The foot pedal structure 19 can be a trapezoidal structure for easy stepping.

[0043] like Figure 3 As shown, in some embodiments, the access port 14 of the battery compartment 3 may be equipped with an access cover. In some embodiments, the battery compartment 3 may also be equipped with a reversing radar interface and / or a lifting lug, etc.

[0044] Furthermore, although exemplary embodiments have been described herein, their scope includes any and all embodiments based on this application that have equivalent elements, modifications, omissions, combinations (e.g., schemes involving intersections of various embodiments), adaptations, or alterations. Elements in the claims will be interpreted broadly based on the language used in the claims and are not limited to the examples described in this specification or during the implementation of this application, which will be interpreted as non-exclusive. Therefore, this specification and examples are intended to be considered illustrative only, and the true scope and spirit are indicated by the following claims and the full scope of their equivalents.

[0045] The above description is intended to be illustrative and not restrictive. For example, the above examples (or one or more of them) can be used in combination with each other. Other embodiments may be used by those skilled in the art upon reading the above description. Furthermore, in the above detailed description, various features may be grouped together to simplify the application. This should not be construed as an intention that a feature of an unclaimed application is necessary for any claim. Rather, the subject matter of this application may be less than all the features of an embodiment of a particular application. Thus, the following claims are incorporated herein by reference as examples or embodiments, wherein each claim is independently considered as a separate embodiment, and these embodiments are contemplated as being possible in various combinations or arrangements. The scope of the invention should be determined by reference to the appended claims and the full scope of their equivalents.

[0046] The above embodiments are merely exemplary embodiments of this application and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within the spirit and scope of this application, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A battery pack arrangement structure for a loader, characterized in that, The arrangement structure includes: The battery pack has a side wing plate at the bottom side edge; The battery compartment has a battery pack receiving cavity. At least two horizontally arranged battery fixing plates are provided at the bottom of the battery pack receiving cavity. The battery fixing plates are provided with fixing interfaces, which are connected to the side wing plates. The battery compartment is connected to the chassis of the loader. The battery bracket includes at least one sub-bracket, which has two sections, each corresponding to a battery pack. The sub-bracket includes a top frame and a bottom frame, as well as connecting columns that connect the top frame and the bottom frame on the sides. The bottom frame of the sub-bracket is connected to the side wing plate of the battery pack. The bottom of the battery bracket is connected to the top of the battery compartment.

2. The arrangement structure according to claim 1, characterized in that, When the battery bracket includes two or more sub-brackets, the multi-layer sub-brackets are stacked and connected by diagonal braces between adjacent sub-brackets. The first end of the diagonal brace is connected to the bottom frame of the upper sub-bracket, and the second end of the diagonal brace is connected to the bottom frame of the lower sub-bracket.

3. The arrangement structure according to claim 2, characterized in that, The sub-support is provided with an upper L-shaped fixing plate and a lower L-shaped fixing plate, and the upper L-shaped fixing plate of the lower sub-support and the lower L-shaped fixing plate of the upper sub-support are connected.

4. The arrangement structure according to claim 1, characterized in that, The bottom of the battery bracket is equipped with a shock absorber, and the battery bracket is connected to the top of the battery compartment through the shock absorber.

5. The arrangement structure according to claim 1, characterized in that, The battery compartment is provided with a wire harness constraint groove at the bottom, which is fixedly connected to the battery fixing plate at the bottom of the battery compartment.

6. The arrangement structure according to claim 1, characterized in that, The battery compartment has a top plate on its top, and a fixing interface on the top plate that communicates with the battery pack receiving cavity.

7. The arrangement structure according to claim 1, characterized in that, The front end of the battery compartment is provided with a connecting plate, which is used to connect to the chassis of the loader.

8. The arrangement structure according to claim 1, characterized in that, The rear end of the battery compartment is equipped with a crash beam.

9. The arrangement structure according to claim 1, characterized in that, The battery compartment is equipped with a charging port.

10. The arrangement structure according to claim 1, characterized in that, The bottom of the battery compartment is equipped with a foot pedal structure.

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