Battery lifting appliance and battery replacing station

Abstract

The utility model provides a battery lifting appliance and a battery replacing station. The battery lifting appliance comprises a base frame, a plurality of hooks and at least one driving component, the hook is arranged on the base frame, and the hook can pivot relative to the base frame between a hoisting position and a releasing position around a first axis extending in the first horizontal direction. The driving component is arranged on the base frame and used for driving any hook to pivot. The driving component comprises an executing part, the executing part can move between a first position and a second position in the vertical direction, and the executing part is connected to the hook. When the execution part is located at the first position, the hook is located at the hoisting position; when the execution part is located at the second position, the hook is located at the release position. According to the battery lifting appliance disclosed by the utility model, the execution part of the driving component is arranged along the vertical direction, so that at least the driving component and the hook occupy small space in the horizontal direction, interference of components on the base frame is avoided, the overall structure is more compact, and the layout is more reasonable.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of battery replacement, more particularly to a battery lifting appliance and a battery replacement station. BACKGROUND

[0002] At present, the battery hook driving mode of the battery lifting appliance of the existing heavy truck battery replacement station mainly adopts electric cylinder direct pushing, drives the battery hook shaft to rotate through the curved sliding groove mechanism on the sliding groove of the direct pushing cross beam, and drives the hook to grab the battery. Long-term use of this structure will cause the hook to have a rotating gap due to the wear of the sliding groove and the roller, which will cause system alarm or safety hazards.

[0003] Therefore, it is necessary to provide a battery lifting appliance and a battery replacement station to at least partially solve the above problems. SUMMARY

[0004] A series of simplified concepts are introduced in the summary part, which will be further described in detail in the specific embodiment part. The summary part of the utility model does not mean to try to limit the key features and necessary technical features of the claimed technical solution, and does not mean to try to determine the protection scope of the claimed technical solution.

[0005] To at least partially solve the above problems, the utility model provides a battery lifting appliance in the first aspect, which comprises:

[0006] a base frame;

[0007] a plurality of hooks, the hooks are arranged on the base frame, and the hooks are pivotable relative to the base frame around a first axis extending in a first horizontal direction between a lifting position and a release position; and

[0008] at least one driving member, the driving member is arranged on the base frame, the driving member is used for driving any of the hooks to pivot, the driving member comprises an execution part, the execution part is movable in a vertical direction between a first position and a second position, and the execution part is connected to the hook;

[0009] wherein, in a state where the execution part is located at the first position, the hook is located at the lifting position, and in a state where the execution part is located at the second position, the hook is located at the release position.

[0010] Optionally, the battery lifting appliance further comprises a transmission assembly, the execution part is connected to the hook through the transmission assembly; the transmission assembly comprises:

[0011] a first transmission member, the first transmission member is connected to the execution part and moves synchronously with the execution part; and

[0012] A second transmission member, one end of the second transmission member being pivotably connected to the hook about a second axis extending in the first horizontal direction, the other end of the second transmission member being pivotably connected to the first transmission member about a third axis extending in the first horizontal direction.

[0013] Optionally, the hook has a connection end and a hook end arranged oppositely;

[0014] The connection end is pivotably connected to the base frame about the first axis;

[0015] The hook end is connected to the second transmission member.

[0016] Optionally, in the vertical direction, the first position is lower than the second position;

[0017] In the process that the execution part moves from the second position to the first position, the hook is pivoted gradually away from the driving member, and in the process that the execution part moves from the first position to the second position, the hook is pivoted gradually close to the driving member;

[0018] The hook end is provided with a bearing surface, the bearing surface being located on the side of the hook away from the driving member in the second horizontal direction, the bearing surface extending in the horizontal direction or extending substantially in the horizontal direction when the hook is in the hoisting position;

[0019] Wherein, the second horizontal direction is perpendicular to the first horizontal direction.

[0020] Optionally, the battery hoist further comprises a guide assembly;

[0021] The guide assembly comprises:

[0022] A guide sleeve, the guide sleeve being arranged on the base frame, the axial direction of the guide sleeve being the vertical direction; and

[0023] A guide rod, the guide rod being slidably sleeved in the guide sleeve in the vertical direction, and the guide rod being connected to the first transmission member.

[0024] Optionally, the second transmission member is configured to be adjustable in size along the extension direction thereof.

[0025] Optionally, the driving member further comprises a main body part, the main body part being arranged on the base frame;

[0026] The execution part is connected to the main body part, and in the vertical direction, the execution part is telescopic relative to the main body part, so that the execution part is movable between the first position and the second position.

[0027] Optionally, the hooks are arranged in pairs, and the execution part in any of the driving members is connected to two hooks in the pair respectively;

[0028] The two hooks are located on two sides of the driving member in the second horizontal direction respectively, and the pivoting directions of the two hooks are opposite.

[0029] The second horizontal direction is perpendicular to the first horizontal direction.

[0030] Optionally, the battery lifting device further comprises a transmission assembly, and the execution part is connected to the two hooks through the transmission assembly.

[0031] The transmission assembly comprises:

[0032] a first transmission member connected to the execution part and moving synchronously with the execution part; and

[0033] two second transmission members, each of which is connected between the first transmission member and one of the hooks, and in any of the second transmission members, one end is pivotally connected to the hook around a second axis extending in the first horizontal direction, and the other end is pivotally connected to the first transmission member around a third axis extending in the first horizontal direction.

[0034] Optionally, in the vertical direction, the first position is lower than the second position.

[0035] During movement of the execution part from the second position to the first position, the hooks pivot gradually away from the driving member, and during movement of the execution part from the first position to the second position, the hooks pivot gradually closer to the driving member.

[0036] In the state that the execution part is located at the first position, the first transmission member and the two second transmission members are located on the same straight line extending in the second horizontal direction.

[0037] The hook has a bearing surface located on the side of the hook away from the driving member in the second horizontal direction, and when the hook is located at the lifting position, the bearing surface extends in the horizontal direction or substantially extends in the horizontal direction.

[0038] Optionally, the number of hooks is multiple pairs, and the number of driving members is multiple, and any pair of hooks is driven by one driving member.

[0039] Each pair of hooks is arranged in the first horizontal direction away from other pairs of hooks.

[0040] The utility model discloses a second aspect provides a battery swap station, the battery swap station includes:

[0041] a battery; and

[0042] The battery lifting appliance according to the first aspect of the present application is used for hoisting the battery.

[0043] Wherein, the battery lifting appliance hoists the battery when the hook is in the hoisting position, and the battery lifting appliance is separated from the battery when the hook is in the releasing position.

[0044] The battery lifting appliance according to the present application overcomes the problem of rotation gap caused by wear of the horizontally arranged straight pushing cross beam, sliding groove and roller in the prior art, and the horizontally arranged linkage occupies a large area; the battery lifting appliance according to the present application arranges the execution part of the driving member in the vertical direction, so that at least the driving member and the hook occupy a small space in the horizontal direction, avoids the interference of components on the base frame, and the overall structure is more compact and the layout is more reasonable. BRIEF DESCRIPTION OF DRAWINGS

[0045] The following drawings of the present application are used for understanding the present application as a part of the present application. The drawings show the embodiments of the present application and the description thereof, which are used to explain the principles of the present application. In the drawings,

[0046] Figure 1 is a three-dimensional schematic view of the battery lifting appliance according to a preferred embodiment of the present application;

[0047] Figure 2 is Figure 1 is a schematic view of the battery lifting appliance hoisting the battery, wherein the hook is in the hoisting position;

[0048] Figure 3 is Figure 1 is a schematic view of the battery lifting appliance hoisting the battery, wherein the hook is in the releasing position;

[0049] Figure 4 is Figure 1 is a top view schematic view of the battery lifting appliance;

[0050] Figure 5 is a sectional view taken along line A-A in Figure 4

[0051] Figure 6 is a structure schematic view of the driving member and the hook transmission connection in the battery lifting appliance shown in Figure 1

[0052] Figure 7 is Figure 6 is a front view schematic view. ​​

[0053] Reference Signs List:

[0054] 100 battery hanger

[0055] 110 base frame

[0056] 111 shaft hole

[0057] 112 guide hole

[0058] 121 hook

[0059] 123 rotation shaft

[0060] 124 rotation bearing

[0061] 126 connecting end

[0062] 127 hook end

[0063] 128 bearing surface

[0064] 130 driving member

[0065] 131 execution part

[0066] 132 main body part

[0067] 133 mounting seat

[0068] 140 transmission assembly

[0069] 143 first transmission part

[0070] 144 second transmission part

[0071] 145 first connecting part

[0072] 146 connecting part

[0073] 147 second connecting part

[0074] 150 guide assembly

[0075] 151 guide sleeve

[0076] 152 guide rod

[0077] 300 battery

[0078] 310 frame beam

[0079] D1 first horizontal direction

[0080] D2 second horizontal direction

[0081] DH vertical direction DETAILED DESCRIPTION

[0082] In the following description, numerous specific details are set forth to provide a more thorough understanding of the present application. However, it will be apparent to one of skill in the art that the present application can be practiced without one or more of these specific details. In other instances, well-known features have not been described in order to avoid obscuring the present application.

[0083] To thoroughly understand the present application, detailed structures will be presented in the following description. It is obvious that the implementation of the present application is not limited to the special details familiar to those skilled in the art.

[0084] It should be understood that the terms used herein are for the purpose of describing specific embodiments and are not intended to limit the present application, and the singular forms "a", "an" and "the" are also intended to include the plural forms, unless the context clearly indicates otherwise. When the terms "comprise" and / or "include" are used in the specification, it means that the stated features, integers, steps, operations, elements, and / or components exist, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or combinations thereof.

[0085] The ordinal numbers such as "first" and "second" cited in the present application are merely identifiers rather than any other meaning, such as a specific order, etc. Moreover, for example, the term "first member" itself does not imply the existence of a "second member", and the term "second member" itself does not imply the existence of a "first member". It should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer" and similar expressions used in the present application are for illustrative purposes only, not limiting.

[0086] In the following, specific embodiments of the present application will be described in more detail with reference to the accompanying drawings, which show representative embodiments of the present application and are not limiting.

[0087] The present application provides a battery lifting appliance.

[0088] Please refer to Figures 1 to 4 , the battery lifting appliance 100 comprises a base frame 110, a plurality of hooks 121 and at least one driving member 130. Specifically, the hooks 121 are arranged on the base frame 110. The hooks 121 are arranged around a first axis extending along a first horizontal direction D1 in a lifting position (see Figure 2 ) and a release position (see Figure 3The hook 121 is pivotable relative to the base frame 110 between a hoisting position and a releasing position. The driving member 130 is arranged on the base frame 110. The driving member 130 is configured to drive the hook 121 to pivot. The driving member 130 comprises an execution portion 131, which is movable along a vertical direction DH between a first position and a second position. The execution portion 131 is connected to the hook 121. It is noted that, in a state where the execution portion 131 is located at the first position, the hook 121 is located at the hoisting position; in a state where the execution portion 131 is located at the second position, the hook 121 is located at the releasing position.

[0089] The battery lifting appliance 100 according to the present solution overcomes the problem of the rotation gap caused by the wear of the horizontally arranged straight pushing beam, sliding groove and roller in the prior art, and the horizontally arranged linkage occupies a large area. By arranging the execution portion 131 of the driving member 130 along the vertical direction DH, at least the driving member 130 and the hook 121 occupy a small space in the horizontal direction, avoiding the interference of the components on the base frame 110, and the overall structure is more compact and the layout is more reasonable.

[0090] Please refer to Figures 5 to 7 , the driving member 130 further comprises a main body portion 132, which is arranged on the base frame 110. For example Figure 5 , the main body portion 132 is connected to the base frame 110 through a mounting seat 133. Further, the execution portion 131 is connected to the main body portion 132. Along the vertical direction DH, the execution portion 131 is telescopic relative to the main body portion 132, so that the execution portion 131 is movable between the first position and the second position. It can be understood that the driving member 130 can be configured as one of the telescopic cylinder structures such as air cylinder, electric cylinder and oil cylinder. Preferably, the driving member 130 is configured as an electric cylinder.

[0091] Please continue to refer to Figures 5 to 7 , the battery lifting appliance 100 further comprises a transmission assembly 140, the execution portion 131 is connected to the hook 121 through the transmission assembly 140, so that the driving member 130 can drive the hook 121 to pivot. Specifically, the transmission assembly 140 comprises a first transmission member 143 and a second transmission member 144. The first transmission member 143 is connected to the execution portion 131 and moves synchronously with the execution portion 131. One end of the second transmission member 144 is pivotably connected to the hook 121 about a second axis extending along the first horizontal direction D1, and the other end of the second transmission member 144 is pivotably connected to the first transmission member 143 about a third axis extending along the first horizontal direction D1. Further, the hook 121 has oppositely arranged connecting end 126 and hook portion end 127. The connecting end 126 is pivotably connected to the base frame 110 about the first axis, and the hook portion end 127 is connected to the second transmission member 144.

[0092] Please refer to Figure 1 and Figure 6The base frame 110 has a shaft hole 111 penetrating in the vertical direction DH, and a rotating shaft 123 is installed in the shaft hole 111 and extends in the first horizontal direction D1. It can be understood that the axis of the rotating shaft 123 is the aforementioned first axis. A rotating bearing 124 is further arranged between the connecting end 126 and the rotating shaft 123. The rotating bearing 124 is sleeved to the outer circumferential side of the rotating shaft 123, so that the hook 121 can pivot around the first axis (or the rotating shaft 123).

[0093] Please refer to Figures 5 to 7 Preferably, in the vertical direction DH, the aforementioned first position is lower than the second position. In other words, in the vertical direction DH, the aforementioned first position is below the second position. It should be noted that during the movement of the execution part 131 from the second position to the first position, the hook 121 pivots gradually away from the driving member 130; during the movement of the execution part 131 from the first position to the second position, the hook 121 pivots gradually close to the driving member 130. Further, the hook portion end 127 is provided with a bearing surface 128 for bearing the battery. The bearing surface 128 is located on the side of the hook 121 away from the driving member 130 in the second horizontal direction D2. When the hook 121 is in the hoisting position, the bearing surface 128 extends in the horizontal direction or substantially extends in the horizontal direction. Preferably, the second horizontal direction D2 is perpendicular to the first horizontal direction D1. For example Figure 1 In the embodiment, the first horizontal direction D1 is configured as the length direction of the base frame 110, and the second horizontal direction D2 is configured as the width direction of the base frame 110.

[0094] Please continue to refer to Figures 5 to 7 In order to improve the accuracy and stability of the operation of the transmission assembly 140, the battery lifting appliance 100 further comprises a guide assembly 150. Specifically, the guide assembly 150 comprises a guide sleeve 151 and a guide rod 152. The guide sleeve 151 is arranged on the base frame 110. The axial direction of the guide sleeve 151 is the vertical direction DH. The guide rod 152 is slidably sleeved in the guide sleeve 151 in the vertical direction DH, and the guide rod 152 is connected with the first transmission member 143. For example Figure 1 In the embodiment, the mounting seat 133 is arranged on the upper surface of the base frame 110. The mounting seat 133 has a guide hole 112 penetrating in the vertical direction DH, and the guide hole 112 is used to install the guide sleeve 151. The guide sleeve 151 can be configured as a linear bearing.

[0095] Preferably, the single driving member 130 is connected to the two hooks 121 through the transmission assembly 140. That is, the (single) execution part 131 is connected to the two hooks 121 through the transmission assembly 140. It can be understood that in the single transmission assembly 140, the number of the second transmission members 144 is two. The two second transmission members 144 are respectively connected between the first transmission member 143 and one hook 121. In any second transmission member 144, one end is pivotally connected to the hook 121 about the second axis, and the other end is pivotally connected to the first transmission member 143 about the third axis. In order to improve the smooth coordination of the movement of the first transmission member 143, preferably, the single first transmission member 143 is connected with two guide assemblies 150, or in other words, two guide rods 152. Correspondingly, the hooks 121 are arranged in pairs, and the execution part 131 in any driving member 130 is connected to the two hooks 121 in the pair, respectively. In other words, the single driving member 130 is connected with the two hooks 121 in the pair through the transmission assembly 140. It should be noted that the two hooks 121 in the pair are respectively located on both sides of the driving member 130 in the second horizontal direction D2, and the pivoting directions of the two hooks 121 are opposite.

[0096] Please refer to Figure 5 In order to facilitate the installation of the second transmission member 144 and at the same time be able to adapt to different specifications of the battery lifting appliance 100, preferably, the second transmission member 144 is configured to be adjustable in size along its own extension direction. For example, the second transmission member 144 includes a first connecting part 145, a connecting part 146 and a second connecting part 147 arranged in sequence along the extension direction of the second transmission member 144. The first connecting part 145 and the second connecting part 147 are both adjustable relative to the connecting part 146, so that the overall size of the second transmission member 144 along its own extension direction is adjustable. Along the extension direction of the second transmission member 144, one end of the first connecting part 145 away from the connecting part 146 is connected to the hook 121 through a first pin shaft, and one end of the second connecting part 147 away from the connecting part 146 is connected to the first transmission member 143 through a second pin shaft. It can be understood that the axis of the first pin shaft is the aforementioned second axis, and the axis of the second pin shaft is the aforementioned third axis.

[0097] The process of driving the hook 121 to pivot by the driving member 130 will be briefly described below.

[0098] Figure 3 In the process, the execution part 131 is located at the second position, and the hook 121 is located at the release position. The driving member 130 is started to operate, and the execution part 131 moves along the vertical direction DH from the second position to the first position. The first transmission member 143 moves downward along the vertical direction DH under the drive of the execution part 131. The two ends of the second transmission member 144 are respectively pivoted about the second axis and the third axis to drive the hook 121 to pivot about the first axis until it is pivoted to the lifting position (see Figure 2). Figure 2 In some embodiments, the first transmission member 143 and the two second transmission members 144 are located on or substantially on the same straight line. For example, the first transmission member 143 and the second transmission members 144 are configured as connecting rods, and the first transmission member 143 and the two second transmission members 144 are located on or substantially on the same straight line. Figure 5 In the state shown, the first transmission member 143 and the two second transmission members 144 are at the dead point position in the connecting rod transmission. The connecting rod mechanism with the most stable dead point structure is in this state, and the connecting rod mechanism is combined with Figure 2 When the load bearing surface 128 of the pair of two hooks 121 is loaded with the battery 300, the weight of the battery 300 generates a force on the pair of two hooks 121, which reverses the pivoting of the hooks 121 around the first axis, and the internal force of the three connecting rods (i.e., one first transmission member 143 and the corresponding two second transmission members 144) is zero.

[0099] Preferably, the number of hooks 121 is multiple pairs, and correspondingly, the number of drive members 130 is multiple. Any pair of hooks 121 is driven by one drive member 130. Each pair of hooks 121 is spaced apart from other pairs of hooks 121 in the first horizontal direction D1.

[0100] The utility model also provides a battery swap station, the battery swap station includes a battery 300 and the aforementioned battery lifting appliance 100, and the battery lifting appliance 100 is used for hoisting the battery 300. It can be understood that the battery lifting appliance 100 hoists the battery 300 when the hooks 121 are located at the hoisting position, and the battery lifting appliance 100 is separated from the battery 300 when the hooks 121 are located at the release position.

[0101] The process of hoisting the battery 300 by the battery lifting appliance 100 is briefly described below.

[0102] The hoisted battery 300 is usually in a box structure, and the outside of the box is provided with a lifting lug or buckle structure or the like for hoisting, for example Figure 2 and Figure 3In the middle, the upper part of the battery 300 has a frame beam 310 suitable for the hook 121. Before the battery hoist 100 hoists the battery 300, the position of the frame beam 310 of the battery 300 is positioned by the relevant control system (such as a visual system or a sensor) in the battery swap station. The hook 121 is pivoted from the release position to the hoisting position under the drive of the driving member 130, and is precisely connected with the frame beam 310 of the battery 300, and then the battery 300 is locked with the hook 121. It can be understood that for different sizes of the battery 300, different specifications of the battery hoist 100 can be selected. For example, a single hook 121 is connected to a single battery 300, or a plurality of hooks 121 distributed at intervals along the second horizontal direction D2 are used to connect to the frame beam 310 of the same battery 300. The battery hoist 100 lifts and moves the battery 300 to the target position by a lifting device (such as a winch or a hydraulic arm). After reaching the target position, the battery 300 is unlocked from the hook 121, and the battery 300 is released smoothly. Then the hook 121 is pivoted from the hoisting position to the release position under the drive of the driving member 130.

[0103] The battery hoist of the utility model overcomes the problem of rotating gap caused by wear of the horizontally arranged straight pushing cross beam, sliding groove and roller in the prior art, and the horizontally arranged linkage occupies a large area; the battery hoist of the utility model arranges the execution part of the driving member in the vertical direction, so that at least the driving member and the hook occupy a small space in the horizontal direction, avoids interference of components on the base frame, and the overall structure is more compact and the layout is more reasonable.

[0104] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this utility model. As used herein, the term "comprises" or "comprising" or "includes" or "including" means encompassing, containing or comprising, but not limited to, but indicating the presence of what follows the term. As used herein, the terms "set," "have," and "is" can indicate a direct attachment between components, or can indicate an indirect attachment between components through an intermediate component. The features described in one embodiment can be applied to another embodiment, alone or in combination with other features, unless the features are not applicable or are otherwise described.

[0105] The utility model has carried on the explanation through the above-mentioned embodiment, but it should be understood that the above-mentioned embodiment is only for the purpose of example and illustration, and is not intended to limit the utility model to the described embodiment range. Those skilled in the art can understand that more kinds of variations and modifications can be made according to the teaching of the utility model, and these variations and modifications all fall within the scope of the utility model claimed.

Claims

1. A battery hoist characterized by, The battery lifting device comprises: a base frame; a plurality of hooks arranged on the base frame, the hooks being pivotable relative to the base frame about a first axis extending in a first horizontal direction between a lifting position and a release position; and at least one driving member arranged on the base frame, the driving member being configured to drive any of the hooks to pivot, the driving member comprising an execution part movable in a vertical direction between a first position and a second position, the execution part being connected to the hooks. In a state where the execution part is located at the first position, the hooks are located at the lifting position, and in a state where the execution part is located at the second position, the hooks are located at the release position.

2. The battery hoist of claim 1, wherein, The battery lifting device further comprises a transmission assembly, the execution part being connected to the hooks through the transmission assembly; the transmission assembly comprising: a first transmission member connected to the execution part and synchronously movable with the execution part; and a second transmission member pivotably connected at one end thereof to the hooks about a second axis extending in the first horizontal direction and pivotably connected at the other end thereof to the first transmission member about a third axis extending in the first horizontal direction.

3. The battery hoist of claim 2, wherein, The hooks have oppositely arranged connection ends and hooking part ends; the connection ends are pivotably connected to the base frame about the first axis; the hooking part ends are connected to the second transmission member.

4. The battery hoist of claim 3, wherein, In the vertical direction, the first position is lower than the second position; in the process that the execution part moves from the second position to the first position, the hooks pivot gradually away from the driving member, and in the process that the execution part moves from the first position to the second position, the hooks pivot gradually towards the driving member; the hooking part ends are provided with load bearing surfaces located on the side of the hooks facing away from the driving member in a second horizontal direction, the load bearing surfaces extending in a horizontal direction or substantially extending in a horizontal direction when the hooks are located at the lifting position; wherein the second horizontal direction is perpendicular to the first horizontal direction.

5. The battery hoist of claim 2, wherein, The battery lifting device further comprises a guide assembly; the guide assembly comprising: a guide sleeve arranged on the base frame, the axial direction of the guide sleeve being a vertical direction; and a guide rod slidably sleeved in the guide sleeve in the vertical direction, the guide rod being connected to the first transmission member.

6. The battery hoist of claim 2, wherein, The second transmission member is configured to have an adjustable size in the extension direction thereof.

7. The battery hoist of claim 1, wherein, The driving member further comprises a main body part arranged on the base frame; the execution part is connected to the main body part, and in the vertical direction, the execution part is telescopic relative to the main body part so as to be movable between the first position and the second position.

8. The battery hoist of any one of claims 1-7, wherein, The hooks are arranged in pairs, the execution part in any of the driving members being connected to the two hooks in the pair respectively; the two hooks are respectively located on the two sides of the driving member in a second horizontal direction, and the pivot directions of the two hooks are opposite; wherein the second horizontal direction is perpendicular to the first horizontal direction.

9. The battery hoist of claim 8, wherein, The battery lifting tool further comprises a transmission assembly, the execution part is connected to the two hooks through the transmission assembly; The transmission assembly comprises: a first transmission member connected to the execution part and moving synchronously with the execution part; and two second transmission members respectively connected between the first transmission member and one of the hooks, in any of the second transmission members, one end is pivotally connected to the hook around a second axis extending along the first horizontal direction, and the other end is pivotally connected to the first transmission member around a third axis extending along the first horizontal direction.

10. The battery hoist of claim 9, wherein, In the vertical direction, the first position is lower than the second position; During the movement of the execution part from the second position to the first position, the hooks are pivoted gradually away from the driving member, and during the movement of the execution part from the first position to the second position, the hooks are pivoted gradually close to the driving member; In the state that the execution part is located at the first position, the first transmission member and the two second transmission members are located on the same straight line extending along the second horizontal direction; The hooks have a bearing surface, which is located on the side of the hooks away from the driving member in the second horizontal direction, and when the hooks are located at the lifting position, the bearing surface extends along the horizontal direction or substantially extends along the horizontal direction.

11. The battery hoist of claim 8, wherein, The number of hooks is multiple pairs, and the number of driving members is multiple, any pair of hooks is driven by one driving member; Each pair of hooks is arranged in the first horizontal direction apart from other pairs of hooks.

12. A battery swap station, characterized by, The battery replacement station comprises: a battery; and The battery lifting tool according to any one of claims 1 to 11 is used for lifting the battery; In the case that the hooks are located at the lifting position, the battery lifting tool lifts the battery, and in the case that the hooks are located at the release position, the battery lifting tool is separated from the battery.

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