Battery pack hoisting device and battery replacing trolley

Abstract

The utility model belongs to the technical field of battery replacing facilities, and particularly relates to a battery pack lifting device and a battery replacing trolley, the battery pack lifting device comprises a device body, a lifting appliance, a traction mechanism and a traction assembly, the traction assembly comprises a first pulley, a second pulley and a lifting rope, and the first pulley is rotationally arranged on the device body; the second pulley is rotationally arranged on the lifting appliance; one end of the lifting rope is connected with the traction mechanism, and the other end is connected with the device body after sequentially winding around the second pulley, the first pulley and the second pulley. In the lifting process of the lifting appliance, the second pulley is equivalent to a movable pulley, and the lifting rope is connected with the fixed part after sequentially winding around the second pulley, the first pulley and the second pulley, so that the bearing capacity of the battery pack lifting device can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery replacement facilities, and in particular to a battery pack lifting device and a battery replacement trolley. Background Art

[0002] Lifting mechanisms are widely used in heavy equipment and engineering fields such as mining, power generation, and construction to lift and transport heavy objects. This is particularly true in the battery swapping equipment used in mining electric trucks, where lifting mechanisms are used to replace battery packs weighing several tons. Lifting efficiency and safety directly impact production efficiency and operating costs. Specifically, the battery pack lifting device is installed inside the battery swapping vehicle and moves with the vehicle, transporting the battery pack to the swapping station for easy battery swapping in mining electric trucks.

[0003] Traditional lifting mechanisms, in order to carry loads during lifting and hoisting, often increase the lifting force of the power system. The increase in the lifting force of the power system can easily lead to increased production costs. Some increase the carrying capacity of the lifting mechanism by optimizing its structure. The optimized lifting mechanism can easily lead to an increase in the overall volume of the battery-swap vehicle, making it inconvenient to apply it to a working environment with limited space.

[0004] Therefore, the above problems need to be solved urgently. Utility Model Content

[0005] The purpose of the present utility model is to provide a battery pack lifting device and a battery replacement trolley to improve the compactness and load-bearing capacity of the battery pack lifting device.

[0006] To achieve this purpose, the present invention adopts the following technical solutions:

[0007] A battery pack hoisting device includes a device body and a hoist for hoisting the battery pack, and also includes a traction mechanism and a traction assembly, wherein the traction mechanism is arranged on the device body, and the traction assembly is arranged between the traction mechanism and the hoist, and the traction assembly includes:

[0008] a first pulley rotatably mounted on the device body;

[0009] a second pulley rotatably mounted on the sling;

[0010] A sling rope, one end of which is connected to the traction mechanism, and the other end of which is connected to the device body after winding around the second pulley, the first pulley, and the second pulley in sequence.

[0011] Preferably, the traction assembly is provided in multiple groups, and multiple second pulleys are evenly distributed on the sling.

[0012] Preferably, the traction mechanism comprises:

[0013] a drum rotatably mounted on the device body, with one end of the suspension rope wound around the drum;

[0014] The driving part is arranged on the device body and is connected to the roller in a transmission manner.

[0015] Preferably, a plurality of spiral grooves are arranged on the drum at intervals, the plurality of spiral grooves are arranged in one-to-one correspondence with a plurality of traction components, and the lifting rope is correspondingly arranged in each of the spiral grooves.

[0016] As a preference,

[0017] The roller is provided with a plurality of rollers;

[0018] The driving unit has a plurality of output ends, and the plurality of output ends are arranged in a one-to-one correspondence with the plurality of rollers. The driving unit is configured to drive the plurality of rollers to rotate synchronously.

[0019] Preferably, the driving unit includes a motor, a reducer and a gear set, the reducer is arranged at the rotating end of the motor, and the gear set is transmitted between the plurality of rollers and the reducer.

[0020] Preferably, the gear set comprises:

[0021] A driving gear coaxially connected to the rotating end of the reducer;

[0022] Two driven gears are coaxially arranged with the two traction mechanisms respectively;

[0023] A plurality of transmission gears are respectively arranged between the driving gear and the corresponding driven gears so that the plurality of driven gears rotate at the same speed.

[0024] Preferably, a plurality of first rope grooves are provided on the circumference of the first pulley;

[0025] A plurality of second rope grooves are provided on a circumferential side of the second pulley, and the number of the second rope grooves is greater than the number of the first rope grooves.

[0026] Preferably, the battery pack lifting device further comprises a positioning component, which is arranged between the sling and the device body to align the sling and the device body when the sling is in the highest position.

[0027] A battery-swapping trolley for replacing batteries in vehicles, comprising:

[0028] The vehicle body moves along a preset direction;

[0029] A hoist is provided below the vehicle body and is used to hoist the battery pack;

[0030] As for the battery pack lifting device mentioned above, the device body is arranged on the vehicle body.

[0031] Beneficial effects of the utility model:

[0032] The battery pack lifting device and battery exchange trolley of the present invention divide the traction assembly into two parts, one part of which is arranged on the device body, that is, on the body of the battery exchange trolley, and the other part is arranged on the hoist. Compared with the traditional battery pack lifting device that sets the entire traction assembly on the device body, such a setting can reduce the structure on the battery exchange trolley, thereby improving the compactness of the battery exchange trolley and making it suitable for environments with limited space. In addition, during the lifting process of the hoist, the second pulley is equivalent to a movable pulley, and the lifting rope is sequentially wrapped around the second pulley, the first pulley, and the second pulley and then connected to the fixed part, thereby improving the bearing capacity of the battery pack lifting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a structural diagram of a battery pack hoisted on a battery-swapping trolley in an embodiment of the present utility model;

[0034] Figure 2 This is a schematic structural diagram of the vehicle body and battery pack hoisting device in an embodiment of the present utility model;

[0035] Figure 3 This is a structural diagram of the sling and the second pulley in an embodiment of the present utility model;

[0036] Figure 4 It is a structural schematic diagram of the lifting rope, the first pulley and the second pulley in the embodiment of the present utility model.

[0037] In the picture:

[0038] 100. Device body; 200. Spreader;

[0039] 1. Roller; 11. Spiral groove;

[0040] 2. First pulley; 21. First rope groove;

[0041] 3. Second pulley; 32. Second rope groove;

[0042] 4. Driving unit; 41. Motor; 42. Reducer; 43. Gear set; 431. Driving gear; 432. Driven gear; 433. Transmission gear;

[0043] 5. Fixing part; 6. Alignment component. DETAILED DESCRIPTION

[0044] The present invention will be further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are intended only to illustrate the present invention and are not intended to limit the present invention. It should also be noted that, for ease of description, the accompanying drawings only illustrate portions relevant to the present invention, not all of its components.

[0045] In the description of this utility model, unless otherwise specified or limited, the terms "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0046] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0047] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are used to refer to positions or locations based on the positions or locations shown in the accompanying drawings. These terms are intended solely to facilitate description and simplify operation, and are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used solely for descriptive purposes and have no special meaning.

[0048] See also Figures 1 to 4 In this embodiment, a battery pack lifting device is proposed, including a device body 100 and a lifting device 200 for lifting the battery pack, a traction mechanism and a traction assembly. The traction mechanism is arranged on the device body 100, and the traction assembly is arranged between the traction mechanism and the lifting device. The traction mechanism can adjust the height of the lifting device through the traction assembly to complete the lifting of the battery pack.

[0049] The traction assembly includes a first pulley 2, a second pulley 3, a lifting rope and a fixing portion 5. The first pulley 2 is rotatably mounted on the device body 100; the second pulley 3 is rotatably mounted on the sling 200; the fixing portion 5 is fixedly mounted on the device body 100. The lifting rope is connected to the device body 100 after passing through the second pulley 3, the first pulley 2, and the second pulley 3 in sequence. Figure 4 Indicated by the arrow direction.

[0050] It can be understood that in this embodiment, the traction assembly is divided into two parts, one part of which is arranged on the device body 100, and the other part is arranged on the sling 200. Compared with the traditional battery pack lifting device, the entire traction assembly is arranged on the device body 100. Such a setting can reduce the structure on the battery swap cart, thereby improving the compactness of the battery swap cart to be suitable for space-constrained environments. In addition, during the lifting process of the sling 200, the second pulley 3 is equivalent to a movable pulley, and the lifting rope is sequentially wrapped around the second pulley 3, the first pulley 2, and the second pulley 3 and then connected to the fixed part 5, thereby improving the bearing capacity of the battery pack lifting device.

[0051] The first pulley 2 is provided with a plurality of first rope grooves 21 around its circumference, and the second pulley 3 is provided with a plurality of second rope grooves 32 around its circumference, with the number of second rope grooves 32 being greater than the number of first rope grooves 21. It is understood that the lifting rope can pass through the second pulley 3 multiple times during the winding process, thereby further improving the load-bearing capacity of the battery pack lifting device.

[0052] For example, the first pulley 2 is provided with a first rope groove 21, and the second pulley 3 is provided with two second rope grooves 32. The lifting rope is sequentially wound through one of the second rope grooves 32, the first rope groove 21, and the other second rope groove 32 before being connected to the fixing portion 5. This arrangement can achieve four times the mechanical force, while increasing the load capacity of the battery pack lifting device and improving the lifting efficiency of the lifting device 200. In some other feasible embodiments, the number of first rope grooves 21 and second rope grooves 32 is determined according to actual working conditions and is not further described here.

[0053] Specifically, the diameter of the sling rope is 6mm-10mm. It will be appreciated that the diameter of the sling rope is compatible with the width of the first rope groove 21 and the second rope groove 32. Smaller pulleys can be selected for the first pulley 2 and the second pulley 3. This arrangement further enhances the compactness of the device body 100, making it more suitable for use in space-constrained environments. The diameter of the sling rope is preferably 8mm. In other feasible embodiments, the diameter of the sling rope can also be 6mm, 7mm, 9mm, or 10mm, which will not be detailed here.

[0054] In addition, the lifting rope is a steel wire rope. Steel wire rope has high strength and good elasticity, and can withstand large impact loads, thereby improving the safety of the battery pack lifting device. In addition, compared with other materials, the use of steel wire rope can also reduce production costs.

[0055] In this embodiment, multiple traction assemblies are provided, and multiple second pulleys 3 are evenly distributed on the sling 200. It is understandable that multiple second pulleys 3 can form multiple lifting points on the sling. Under the action of the traction mechanism, multiple traction assemblies can simultaneously lift the sling, thereby ensuring that even if one of the lifting ropes breaks, the battery pack lifting device can still ensure stability during the battery pack lifting process.

[0056] Exemplarily, four groups of traction assemblies are provided, and the four groups of traction assemblies are located at the four corners of the sling. After the lifting rope of one lifting point breaks, the lifting ropes of the remaining three lifting points form a cone structure, thereby still ensuring the stability of the sling 200, thereby further ensuring the safety performance of the battery pack lifting device.

[0057] The traction mechanism includes a drum 1 and a drive unit 4. The drum 1 is rotatably mounted on the device body 100, and one end of the lifting rope is wound around the drum 1. The drive unit 4 is mounted on the device body 100 and is in transmission connection with the drum 1. It is understood that the drum 1 can rotate about its own axis under the action of the drive unit 4, thereby unwinding or rewinding the lifting rope to facilitate control of the height of the sling.

[0058] Furthermore, there are multiple rollers 1, and the driving unit 4 has multiple output ends, and the multiple output ends are arranged in a one-to-one correspondence with the multiple rollers 1. The driving unit 4 is configured to drive the multiple rollers 1 to rotate synchronously. It can be understood that the same driving unit 4 is used to drive the multiple rollers 1 to rotate synchronously at the same time to ensure that the various lifting points on the sling 200 are lifted and lowered synchronously and move smoothly. Such an arrangement can further improve the compactness of the device body 100 and reduce production costs.

[0059] In this embodiment, the drive unit 4 includes a motor 41, a reducer 42, and a gear set 43. The reducer 42 is disposed at the rotating end of the motor 41, and the gear set 43 is disposed between the multiple rollers 1 and the reducer 42. It will be appreciated that the gear set 43 can simultaneously control the synchronous rotation of the multiple rollers 1, thereby ensuring smooth lifting and lowering of the spreader 200. Furthermore, the provision of the gear set 43 can reduce production costs.

[0060] Specifically, the gear set 43 includes a driving gear 431, two driven gears 432, and multiple transmission gears 433. The driving gear 431 is coaxially connected to the rotating end of the reducer 42; the multiple driven gears 432 are coaxially arranged with the multiple rollers 1; and the multiple transmission gears 433 are respectively arranged between the driving gear 431 and its corresponding driven gears 432, so that the two driven gears 432 rotate at the same speed. It can be understood that the driving gear 431 can rotate around its own axis under the action of the motor 41, and under the action of the transmission gear 433, it can drive the two driven gears 432 to start rotating at the same speed.

[0061] It should be noted that by adjusting the transmission ratio between the various gears, the number of transmission gears 433 can be adjusted, so as to adjust the position of the driving part 4 and improve the applicability of the battery pack lifting device.

[0062] Furthermore, the drum 1 is provided with multiple spiral grooves 11 at intervals, corresponding one to each of the traction assemblies, and each spiral groove 11 is provided with a corresponding lifting rope. It is understood that each drum 1 is wrapped with multiple lifting ropes, thereby enabling multiple lifting points to be provided on the same side of the sling 200. This avoids safety accidents caused by the breakage of one of the lifting ropes, thereby improving the safety performance of the lifting. This arrangement can reduce the number of drums 1, thereby further improving the compactness of the battery pack lifting device.

[0063] For example, two rollers 1 are provided, and each roller 1 is provided with two spiral grooves 11 , for a total of four groups of spiral grooves 11 . After the lifting rope is wound, four lifting points can be formed on the lifting device 200 .

[0064] In this embodiment, the battery pack lifting device further includes an alignment component 6, which is disposed between the sling 200 and the device body 100 to align the sling 200 and the device body 100 when the sling 200 is at the highest position. It is understandable that, in the process of lifting the battery pack, the sling 200 needs to be raised and lowered to a preset height in order to facilitate the transverse movement of the battery pack. When the sling 200 is raised and lowered to the highest point, the sling 200 and the device body 100 can be aligned under the action of the alignment component 6, thereby preventing the sling 200 from shaking during the transfer process, thereby ensuring the accuracy of the battery pack during the battery replacement process.

[0065] Exemplarily, the alignment component 6 includes an alignment pin and an alignment pin hole adapted to the alignment pin. The alignment pin is arranged on the sling 200, and the alignment pin hole is arranged on the device body 100 and is arranged corresponding to the alignment pin. During the rising process of the sling 200, the alignment pin can be inserted into the alignment pin hole to complete the alignment.

[0066] In addition, the alignment pin hole is trumpet-shaped so that the alignment pin and the alignment pin hole can play a guiding role during the alignment process.

[0067] This embodiment also proposes a battery swapping trolley for battery swapping vehicles, which includes the battery pack lifting device described above. It is understood that the traction assembly is divided into two parts, one of which is provided on the device body 100, that is, provided on the body of the battery swapping trolley, and the other is provided on the lifting device 200. Compared with the traditional battery pack lifting device that is entirely provided on the battery swapping trolley, this arrangement can reduce the structure on the battery swapping trolley, thereby improving the compactness of the battery swapping trolley and making it suitable for environments with limited space.

[0068] Obviously, the above-described embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention and are not intended to limit the manner in which the present invention is to be implemented. A person skilled in the art would be able to make various obvious changes, readjustments, and substitutions without departing from the scope of protection of the present invention. It is not necessary and impossible to enumerate all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A battery pack hoisting device, comprising a device body (100) and a hoisting tool (200) for hoisting the battery pack, characterized in that: It also includes a traction mechanism and a traction assembly, wherein the traction mechanism is arranged on the device body (100), and the traction assembly is arranged between the traction mechanism and the sling (200), and the traction assembly includes: A first pulley (2) is rotatably mounted on the device body (100); a second pulley (3) rotatably mounted on the sling (200); A sling rope, one end of which is connected to the traction mechanism, and the other end of which is connected to the device body (100) after winding through the second pulley (3), the first pulley (2), and the second pulley (3) in sequence.

2. The battery pack hoisting device according to claim 1, characterized in that: The traction components are provided in multiple groups, and the multiple groups of traction components are evenly distributed on the sling (200).

3. The battery pack hoisting device according to claim 2, characterized in that: The traction mechanism comprises: A drum (1) is rotatably mounted on the device body (100), and one end of the suspension rope is wound around the drum (1); The driving part (4) is arranged on the device body (100) and is in transmission connection with the roller (1).

4. The battery pack hoisting device according to claim 3, characterized in that: A plurality of spiral grooves (11) are arranged at intervals on the drum (1), the plurality of spiral grooves (11) are arranged in one-to-one correspondence with a plurality of traction components, and the suspension rope is correspondingly arranged in each of the spiral grooves (11).

5. The battery pack hoisting device according to claim 3, characterized in that: The roller (1) is provided with a plurality of; The driving unit (4) has a plurality of output ends, and the plurality of output ends are arranged in a one-to-one correspondence with the plurality of rollers (1). The driving unit (4) is configured to drive the plurality of rollers (1) to rotate synchronously.

6. The battery pack hoisting device according to claim 3, characterized in that: The driving part (4) comprises a motor (41), a reducer (42) and a gear set (43); the reducer (42) is arranged at the rotating end of the motor (41); and the gear set (43) is transmission-arranged between the plurality of rollers (1) and the reducer (42).

7. The battery pack hoisting device according to claim 6, characterized in that: The gear set (43) comprises: A driving gear (431) is coaxially connected to the rotating end of the speed reducer (42); Two driven gears (432) are coaxially arranged with the two traction mechanisms respectively; A plurality of transmission gears (433) are respectively arranged between the driving gear (431) and the corresponding driven gears (432) so that the plurality of driven gears (432) rotate at the same speed.

8. The battery pack hoisting device according to claim 1, characterized in that: A plurality of first rope grooves (21) are provided on the circumference of the first pulley (2); A plurality of second rope grooves (32) are provided on the circumferential side of the second pulley (3), and the number of the second rope grooves (32) is greater than the number of the first rope grooves (21).

9. The battery pack hoisting device according to claim 1, characterized in that: The battery pack hoisting device further comprises a positioning assembly (6), wherein the positioning assembly (6) is arranged between the sling (200) and the device body (100) so as to align the sling (200) and the device body (100) when the sling (200) is at the highest position.

10. A battery-swapping vehicle, used for battery swapping in vehicles, characterized in that: Comprising a battery pack lifting device as described in any one of claims 1-9.

Images