Battery pack self-assembly and disassembly mechanism and crane

Abstract

This invention relates to the field of engineering machinery technology, and particularly to a battery pack self-disassembly and assembly mechanism and a crane, comprising a bracket, a telescopic arm, a hook, a bracket cylinder, a telescopic arm cylinder, and a battery pack; the telescopic arm is hinged to the bracket, and the telescopic arm includes a fixed end and a movable end; the hook includes a horizontal arm and a vertical arm; the horizontal arm of the hook is fixedly connected to the movable end of the telescopic arm, and the vertical arm is hinged to the horizontal arm; the battery pack self-disassembly and assembly mechanism is disposed on one side of the vehicle frame, and the bracket is hinged to the vehicle frame; the telescopic arm cylinder is used to drive the telescopic arm; the battery pack is disposed on the battery pack of the vehicle frame; one end of the bracket cylinder is hinged to the vehicle frame, and the other end is hinged to the bracket, and the telescopic movement of the bracket cylinder drives the bracket to rotate relative to the vehicle frame. This mechanism can realize the self-disassembly and assembly function of the battery pack, and can achieve self-positioning of the battery pack during the disassembly and assembly process, while the workplace is unrestricted, the replacement efficiency is high, and the difficulty is low.

Description

Technical Field

[0001] This invention relates to the field of engineering machinery technology, and in particular to a battery pack self-disassembly and assembly mechanism and a crane. Background Technology

[0002] With the rapid development of construction machinery technology, problems such as environmental pollution and energy shortages have also emerged. Therefore, the research and development of new energy cranes has become a hot topic in the construction machinery field. Currently, there are two ways to replenish energy for new energy vehicles: charging and battery swapping. However, the charging time for power batteries is relatively long, which cannot meet the needs of wheeled cranes for long-term continuous operation. Therefore, battery swapping has become the main way to replenish energy for new energy wheeled cranes. At the same time, as the power source of new energy vehicles, the efficiency of battery swapping affects the vehicle's working efficiency to some extent. Currently, the method of battery swapping at stations by professionals using specialized equipment is inefficient and the disassembly and assembly process is difficult, reducing the operating efficiency of new energy wheeled cranes.

[0003] The existing battery replacement methods mostly involve vehicles entering battery swapping stations where professional personnel replace the batteries using specialized equipment. Specific battery swapping operations include swapping batteries by hoisting or swapping batteries using a bottom lifting platform device.

[0004] Existing battery removal and installation methods have the following disadvantages: 1. Vehicles need to have their batteries replaced at battery swapping stations, which limits the operating area, resulting in high labor and material costs and low efficiency; 2. Existing battery pack removal and installation mechanisms mostly require professional personnel to operate, making the battery swapping process complex and difficult; 3. Electric wheeled cranes need to retain some charge before driving to a dedicated battery swapping station for the swapping operation, which cannot meet the user's need for long-term continuous operation of wheeled cranes, and there is also the risk that the remaining charge is insufficient to drive the vehicle to the battery swapping station. Summary of the Invention

[0005] This invention aims to improve upon existing battery pack disassembly and assembly processes, which suffer from limited work areas, high difficulty, and low efficiency. It proposes a self-disassembly and assembly mechanism for battery packs and a crane. This mechanism enables self-disassembly and assembly of battery packs, allowing for self-positioning during the process. Furthermore, the work area is unrestricted, resulting in high replacement efficiency and low difficulty.

[0006] The technical solution provided by this invention is as follows:

[0007] A battery pack self-disassembly and assembly mechanism includes a bracket, a telescopic arm, a hook, a bracket cylinder, a telescopic arm cylinder, and a battery pack. The telescopic arm is hinged to the bracket and includes a fixed end and a movable end. The hook includes a horizontal arm and a vertical arm. The horizontal arm of the hook is fixedly connected to the movable end of the telescopic arm, and the vertical arm is hinged to the horizontal arm. The battery pack self-disassembly and assembly mechanism is disposed on one side of a vehicle frame, and the bracket is hinged to the vehicle frame. The telescopic arm cylinder is used to drive the telescopic arm. The battery pack is disposed on a battery pack on the vehicle frame. One end of the bracket cylinder is hinged to the vehicle frame, and the other end is hinged to the bracket. The telescopic movement of the bracket cylinder drives the bracket to rotate relative to the vehicle frame.

[0008] Furthermore, the telescopic boom cylinder is provided in two parts, namely a first telescopic boom cylinder and a second telescopic boom cylinder.

[0009] Furthermore, the frame is provided with 4 hinge points, namely 2 first frame hinge points and 2 second frame hinge points; the bracket is provided with 6 hinge points, namely 2 first bracket hinge points, 2 second bracket hinge points and 2 third bracket hinge points; the bracket is hinged to the frame through the first frame hinge points, one end of the bracket cylinder is hinged to the frame through the second frame hinge points, and the other end is hinged to the bracket through the first bracket hinge points.

[0010] Furthermore, one end of the first telescopic boom cylinder is hinged to the bracket via the second bracket hinge point, and the other end is hinged to the fixed end of the telescopic boom via the third bracket hinge point. The telescopic boom is driven to rotate relative to the bracket by the telescopic movement of the first telescopic boom cylinder.

[0011] Furthermore, the fixed end of the telescopic boom is hinged to the bracket via the third bracket hinge point, one end of the second telescopic boom cylinder is hinged to the bracket via the third bracket hinge point, and the other end is hinged to the movable end.

[0012] Furthermore, a guide rail is provided between the movable end and the fixed end, and the extension and retraction of the movable end relative to the fixed end is realized by the extension and retraction movement of the second telescopic arm cylinder.

[0013] Furthermore, the vertical arm always points vertically downwards.

[0014] The present invention also provides a battery pack disassembly method, wherein the method employs the above-mentioned battery pack self-disassembly and assembly mechanism;

[0015] When not in battery swapping mode, the bracket cylinder and telescopic arm cylinder are in the retracted state, and the movable end of the telescopic arm is retracted into the fixed end;

[0016] Upon receiving a user's battery swap instruction, the bracket cylinder first actuates, causing the bracket to rotate 90 degrees around the vehicle frame; the second telescopic arm cylinder then actuates, extending its movable end to automatically position the hook onto the battery pack; after the hook connects to the battery pack, an indicator light illuminates. Upon receiving a user's instruction to remove the battery, the telescopic arm cylinder drives the telescopic arm to lift, lifting the battery out of the battery pack; after the battery is removed, the retracting arm cylinder retracts the movable end of the telescopic arm; the bracket cylinder then actuates until it is fully retracted, completing the battery removal process.

[0017] Furthermore, when the battery level drops below a certain threshold, a low battery warning light illuminates, reminding the user to replace the battery.

[0018] The present invention also provides an engineering machine that includes the above-mentioned battery pack self-disassembly and assembly mechanism.

[0019] Beneficial effects

[0020] This invention proposes a battery pack self-disassembly and assembly mechanism and a crane, which realizes the self-positioning, self-disassembly and assembly functions of the battery pack of a wheeled crane, and is not limited by the workplace, thereby improving the battery replacement efficiency and helping to further improve the operating efficiency of new energy cranes.

[0021] The self-disassembly and assembly mechanism described in this invention is located on one side of the vehicle frame and can be completely retracted when not swapping batteries, occupying little space and having little impact on the overall vehicle layout. Attached Figure Description

[0022] Figure 1 This is a self-disassembly and assembly mechanism for the battery pack;

[0023] Figure 2 This is a side view of the battery pack self-disassembly and assembly mechanism;

[0024] Figure 3 This is a schematic diagram of the battery swapping process.

[0025] Figure 4 This is a schematic diagram of the battery swapping process.

[0026] 1. Bracket; 2. Telescopic boom; 3. Hook; 4. Bracket cylinder; 5. First telescopic boom cylinder; 6. Second telescopic boom cylinder; 7. Battery pack; 8. Battery bag; 9. Frame; 11. First bracket hinge point; 12. Second bracket hinge point; 13. Third bracket hinge point; 21. Fixed end; 22. Movable end; 31. Horizontal boom; 32. Vertical boom; 91. First frame hinge point; 92. Second frame hinge point. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this invention is in use. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention. In addition, the terms "first," "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0031] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0032] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0033] Example 1

[0034] like Figure 1 and2 As shown, a battery pack self-disassembly and assembly mechanism includes a bracket 1, a telescopic arm 2, a hook 3, a bracket cylinder 4, a telescopic arm cylinder, and a battery pack 7. The telescopic arm 2 is hinged to the bracket 1 and includes a fixed end 21 and a movable end 22. The hook 3 includes a horizontal arm 31 and a vertical arm 32. The horizontal arm 31 of the hook is fixedly connected to the movable end 22 of the telescopic arm 32, and the vertical arm 32 is hinged to the horizontal arm 31. The battery pack self-disassembly and assembly mechanism is located on one side of a vehicle frame 9, and the bracket 1 is hinged to the vehicle frame 9. Two telescopic arm cylinders are provided to drive the telescopic arm 2, namely a first telescopic arm cylinder 5 and a second telescopic arm cylinder 6. The battery pack 7 is mounted on a battery pack 8 on the vehicle frame 9. One end of the bracket cylinder 4 is hinged to the vehicle frame 9, and the other end is hinged to the bracket 1. The telescopic movement of the bracket cylinder drives the bracket to rotate relative to the vehicle frame.

[0035] The frame 9 has four hinge points: two first frame hinge points 91 and two second frame hinge points 92. The bracket 1 has six hinge points: two first bracket hinge points 11, two second bracket hinge points 12, and two third bracket hinge points 13. The bracket 1 is hinged to the frame 9 via the first frame hinge points 91. One end of the bracket cylinder 4 is hinged to the frame 9 via the second frame hinge point 92, and the other end is hinged to the bracket 1 via the first bracket hinge point 11. The extension and retraction of the bracket cylinder 4 drives the bracket to rotate relative to the frame. One end of the first telescopic arm cylinder 5 is hinged to the bracket 1 via the second bracket hinge point 12, and the other end is hinged to the telescopic arm fixed end 21 via the third bracket hinge point 13. The extension and retraction of the first telescopic arm cylinder 5 drives the telescopic arm 2 to rotate relative to the bracket 1. The fixed end 21 of the telescopic boom is hinged to the bracket 1 via the third bracket hinge point 13. The second telescopic boom cylinder 6 is placed inside the telescopic boom 2. One end of the second telescopic boom cylinder 6 is hinged to the bracket 1 via the third bracket hinge point 13, and the other end is hinged to the movable end 22. At the same time, a guide rail is provided between the movable end 22 and the fixed end 21. The telescopic movement of the movable end relative to the fixed end 21 is realized by the telescopic movement of the second telescopic boom cylinder 6. The horizontal arm 31 of the hook is fixedly connected to the movable end of the telescopic boom 32, and the vertical arm 32 is hinged to the horizontal arm 31 and is always vertically downward.

[0036] The hydraulic cylinders of this mechanism can be powered by an electric hydraulic pump driven by the machine's battery pack, an electric hydraulic pump driven by other battery packs, or even a hydraulic pump driven by a traditional engine.

[0037] The specific work process is as follows:

[0038] Non-battery swapping condition: Under this condition, the self-disassembly mechanism is in the following state: Figure 1 and Figure 2As shown in the diagram, the bracket cylinder, the first telescopic arm cylinder, and the second telescopic arm cylinder are in a fully retracted state, with the movable end of the telescopic arm retracted into the fixed end.

[0039] Battery swapping operation: When the battery charge falls below a certain threshold (e.g., 10%), a low battery warning light illuminates, reminding the user to replace the battery. The process is as follows: After receiving the battery swapping command, the self-disassembly mechanism's hydraulic cylinder first actuates, causing the bracket to rotate 90 degrees around the vehicle frame; then, based on the battery pack's position information, the second telescopic arm hydraulic cylinder actuates, extending its movable end to automatically position the hook onto the battery pack. Figure 3 As shown. During this process, the first telescopic arm cylinder will simultaneously operate to adjust the hook height to a suitable position. After the hook is connected to the battery pack, the indicator light will illuminate, and the user can issue a command to lift the battery out. At this time, the first telescopic arm cylinder will operate, raising the telescopic arm to a certain height and lifting the battery out of the battery pack. During this process, the second telescopic arm cylinder will operate simultaneously to ensure that the battery lifting process is always a vertical movement. After the battery is lifted out of the battery pack, the second telescopic arm cylinder will operate to retract the movable end of the telescopic arm. Then the bracket cylinder will start to operate until it is fully retracted, thus completing the battery removal work, as shown. Figure 4 As shown. The battery installation and removal procedures are the reverse of each other. The battery pack is fixed in position on the vehicle body, and the position of the self-installation and removal mechanism relative to the battery pack is also fixed. Each cylinder of the self-installation and removal mechanism is controlled by the vehicle controller. The hook automatically positions itself to the battery pack, which is achieved by the vehicle controller controlling the length of each set of cylinders. The cylinder lengths have been pre-input into the vehicle controller.

[0040] For pure electric vehicles, in order to avoid the inability to automatically swap batteries when the battery charge is too low, a dedicated battery for battery swapping can be set up. This battery only powers the self-disassembly and assembly mechanism and does not participate in vehicle driving or onboard operations.

[0041] Guide rails can be installed between the self-disassembly mechanism and the vehicle frame to allow the mechanism to move horizontally, further improving battery replacement efficiency. Alternatively, the self-disassembly mechanism can be located at the bottom of the vehicle frame.

Claims

1. A battery pack self-disassembly and assembly mechanism, characterized in that, The system includes a bracket, a telescopic arm, a hook, a bracket cylinder, a telescopic arm cylinder, and a battery pack. The telescopic arm is hinged to the bracket and includes a fixed end and a movable end. The hook includes a horizontal arm and a vertical arm. The horizontal arm of the hook is fixedly connected to the movable end of the telescopic arm, and the vertical arm is hinged to the horizontal arm. A self-installing and disassembling mechanism for the battery pack is located on one side of the vehicle frame, and the bracket is hinged to the vehicle frame. The telescopic arm cylinder drives the telescopic arm. The battery pack is mounted on the battery pack of the vehicle frame. One end of the bracket cylinder is hinged to the vehicle frame, and the other end is hinged to the bracket. The telescopic movement of the bracket cylinder drives the bracket to rotate relative to the vehicle frame. There are two telescopic arm cylinders, designated as a first telescopic arm cylinder and a second telescopic arm cylinder. The vehicle frame has four hinge points, designated as two first frame hinge points and two second frame hinge points. The bracket has six hinge points. There are three hinge points: two first bracket hinge points, two second bracket hinge points, and two third bracket hinge points. The bracket is hinged to the vehicle frame via the first frame hinge point. One end of the bracket cylinder is hinged to the vehicle frame via the second frame hinge point, and the other end is hinged to the bracket via the first bracket hinge point. One end of the first telescopic arm cylinder is hinged to the bracket via the second bracket hinge point, and the other end is hinged to the fixed end of the telescopic arm via the third bracket hinge point. The telescopic arm rotates relative to the bracket through the telescopic movement of the first telescopic arm cylinder. A guide rail is provided between the movable end and the fixed end. The telescopic arm's extension and retraction relative to the fixed end is achieved through the telescopic movement of the second telescopic arm cylinder. The fixed end of the telescopic arm is hinged to the bracket via the third bracket hinge point. One end of the second telescopic arm cylinder is hinged to the bracket via the third bracket hinge point, and the other end is hinged to the movable end. The vertical arm always points vertically downward.

2. A method for disassembling a battery pack, characterized in that, The method employs the battery pack self-disassembly and assembly mechanism described in claim 1; When not in battery swapping mode, the bracket cylinder and telescopic arm cylinder are in the retracted state, and the movable end of the telescopic arm is retracted into the fixed end; Upon receiving a user's battery swap instruction, the bracket cylinder first activates, causing the bracket to rotate 90 degrees around the vehicle frame. The second telescopic arm cylinder then activates, extending its movable end to automatically position the hook against the battery pack. Simultaneously, the first telescopic arm cylinder adjusts the hook height to a suitable position. After the hook connects to the battery pack, an indicator light illuminates. Upon receiving a user's instruction to remove the battery, the first telescopic arm cylinder drives the telescopic arm to lift, removing the battery from the battery pack. The second telescopic arm cylinder operates simultaneously to ensure the battery removal process remains vertical. After the battery is removed from the battery pack, the second telescopic arm cylinder retracts the movable end of the telescopic arm. The bracket cylinder then activates until it is fully retracted, completing the battery removal process. When the battery level drops below a certain threshold, a low battery warning light will illuminate, reminding the user to replace the battery.

3. An engineering machinery, characterized in that, It includes the battery pack self-disassembly and assembly mechanism as described in claim 1.

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