Switching battery locking device and working machine

Abstract

The utility model relates to the technical field of battery changing equipment, in particular to a battery changing battery locking device and an operation machine, and the battery changing battery locking device comprises a rack, a battery box, a battery locking device, a battery locking device and a battery locking device, the locking mechanism is arranged on the rack, and the locking mechanism comprises a spring bolt assembly, a driver and a limiting assembly; wherein the spring bolt assembly is rotatably installed on the rack and comprises a movable part, the driving end and the locking end of the movable part are located on the two sides of the rotating axis of the spring bolt assembly respectively, and the driving end is connected with the driver so that the locking end can swing between the unlocking position and the locking position under driving of the driver; and at the locking position, the locking end can be embedded into the locking structure of the battery box, and the limiting assembly can clamp and lock the locking end. According to the scheme, the defects that in the prior art, a locking mechanism is prone to damage, and the space utilization rate is low are overcome, and the more efficient and safer battery replacement and the stable locking effect are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery swapping equipment, in particular to a battery swapping battery locking device and a working machine. Background Art

[0002] The existing battery swapping battery locking mechanisms mainly include two structural forms: the pin type and the swing arm hook type. The pin type mechanism fixes the battery box by multiple pins extending out after the battery box falls onto the bottom bracket and mating with the pin holes on the bottom beam of the battery box, while the swing arm hook type mechanism fixes the battery box by the swing arm hook engaging with the mating plane above the bottom beam of the battery box. However, there are some obvious deficiencies in such existing locking mechanisms.

[0003] Firstly, the pins of the pin type are prone to deformation and bending under the impact of the load, resulting in jamming between the pins and the mating pin holes when the pins extend or retract, thus causing locking failure. This not only affects the efficiency of battery swapping but also poses certain safety hazards. Secondly, the swing arm hook type structure occupies a large space, increasing the overall size of the battery box, reducing the space utilization rate, and also increasing the system weight.

[0004] In addition, in order to prevent the situation of non-locking, a certain gap must be reserved when designing the matching parts of the bottom beam of the battery box and the locking mechanism for both structural types. This results in certain jumping and vibration of the battery box during the test and working processes, which not only affects the safety of the battery but also affects the smoothness and comfort of the battery swapping operation. Summary of the Utility Model

[0005] The utility model provides a battery swapping battery locking device and a working machine to solve the defects of easy damage of the locking mechanism and low space utilization rate in the prior art, and achieve more efficient and safe battery replacement and stable locking effect.

[0006] The utility model provides a battery swapping battery locking device, including: a frame, arranged on a vehicle-mounted bottom bracket for arranging a battery box; a locking mechanism, arranged on the frame, the locking mechanism including a locking tongue assembly, a driver and a limiting assembly; wherein, the locking tongue assembly is rotatably installed on the frame, the locking tongue assembly includes a movable part, the driving end and the locking end of the movable part are respectively located on both sides of the rotation axis of the locking tongue assembly, the driving end is connected with the driver, so that under the drive of the driver, the locking end swings between an unlocking position and a locking position; in the locking position, the locking end can be embedded into the locking structure of the battery box, and the limiting assembly can clamp the locking end.

[0007] According to a battery swapping battery locking device of the present utility model, the limiting assembly includes: a limiting plate, the limiting plate is fixed to the movable inclined block of the frame, the movable inclined block has a degree of freedom of oblique sliding relative to the bottom surface of the frame, and at least a part of the movable inclined block is located on the swinging path of the movable member; during the process of the locking end of the movable member moving from the unlocking position to the locking position, the locking end of the movable member pushes the movable inclined block to slide obliquely upward to gradually approach the limiting plate, and clamps the locking end of the movable member between the movable inclined block and the limiting plate.

[0008] According to a battery swapping battery locking device of the present utility model, the limiting assembly includes a fixed inclined block, which is arranged below the limiting plate; the movable inclined block is slidably arranged on the fixed inclined block, and the contact surface between the movable inclined block and the fixed inclined block is an inclined surface; the limiting plate is provided with a long slot, and a guiding rod is arranged at the top of the movable inclined block, and the guiding rod is in limiting fit with the long slot.

[0009] According to a battery swapping battery locking device of the present utility model, the limiting assembly includes a first elastic member; the first elastic member is connected between the guiding rod and the limiting plate to provide an elastic force for resetting the movable inclined block.

[0010] According to a battery swapping battery locking device of the present utility model, the locking tongue assembly includes: a rotating shaft, the movable member is installed at the top end of the rotating shaft; a bearing member is arranged between the frame and the rotating shaft to enable the rotating shaft to have a degree of freedom of rotating relative to the frame around the rotation axis.

[0011] According to a battery swapping battery locking device of the present utility model, a radially extending swing arm plate is arranged at the bottom end of the rotating shaft; the locking tongue assembly includes a second elastic member; the second elastic member is connected between the frame and the swing arm plate to provide an elastic force for keeping the locking end in the locking position.

[0012] According to a battery swapping battery locking device of the present utility model, a plurality of the locking mechanisms are arranged on the frame to be respectively used for locking and cooperating with multiple locking structures of the battery box; the locking assemblies of every two of the locking mechanisms share one driver; fish-eye joints are respectively arranged at both ends of the driver, and through the fish-eye joints, both ends of the driver are respectively hinged and connected to the driving ends of two movable members.

[0013] According to a battery swapping battery locking device of the present utility model, the frame is provided with one or more guiding columns for positioning and cooperating with positioning holes at the bottom of the battery box.

[0014] According to a battery swapping locking device of the present utility model, the guiding column includes a primary guiding portion and a secondary guiding portion; the top end of the primary guiding portion is conical, and from the primary guiding portion to the secondary guiding portion, the guiding column forms a multi-stage structure with a gradually increasing cross-sectional area step by step.

[0015] The present utility model also provides a working machine, including the battery swapping locking device of the above-mentioned embodiment.

[0016] The battery swapping locking device and the working machine provided by the present utility model effectively solve the defects of easy damage of the locking mechanism and low space utilization rate in the prior art by adopting a rotatable locking tongue assembly, and achieve more efficient and safe battery replacement and stable locking effect. Among them, the locking tongue assembly is rotatably installed on the frame, one end of the movable part is used as the driving end and is connected to the driver, and the other end is used as the locking end and can swing between the unlocking position and the locking position. When the battery box is placed in place, the driver drives the movable part to rotate to the locking position. At this time, the locking end is embedded in the locking structure of the battery box and is further clamped by the limiting assembly to ensure that the battery box is firmly fixed. Through the above structure, the possibility of the traditional pin shaft being deformed by force is reduced, and the risk of locking failure is avoided. At the same time, due to the compact structure of the locking tongue assembly, compared with the traditional plug-type or swing-arm hook-type structure, it occupies less space, improves the space utilization rate, and reduces the system weight. In addition, the way that the locking end is embedded and fixed by the limiting assembly reduces the jumping and vibration of the battery box relative to the frame, and improves the safety and smoothness. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions in the present utility model or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to these drawings without creative efforts.

[0018] Figure 1 is a three-dimensional structural schematic diagram of the battery swapping locking device provided by the present utility model.

[0019] Figure 2 is a top-view structural schematic diagram of the battery swapping locking device provided by the present utility model.

[0020] Figure 3 is Figure 1 a partial structural schematic diagram of the battery swapping locking device shown.

[0021] Figure 4 is a structural schematic diagram of the locking tongue assembly of the battery swapping locking device provided by the present utility model.

[0022] Figure 5 It is a schematic cross-sectional structure diagram of the locking tongue assembly of the battery swapping locking device provided by the present utility model.

[0023] Figure 6 It is a schematic structure diagram of the driver of the battery swapping locking device provided by the present utility model.

[0024] Figure 7 It is a schematic structure diagram of the second elastic member of the battery swapping locking device provided by the present utility model.

[0025] Reference numerals:

[0026] 10, frame; 11, guide post; 21, movable member; 22, rotating shaft; 23, bearing member; 24, swing arm plate; 25, second elastic member; 30, driver; 31, ball eye joint; 41, limit plate; 42, long notch; 43, fixed inclined block; 44, movable inclined block; 45, guide rod; 46, first elastic member. Detailed implementation manners

[0027] To make the objectives, technical solutions and advantages of the present utility model clearer, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without making creative efforts based on the embodiments in the present utility model belong to the scope of protection of the present utility model.

[0028] In the description of the embodiments of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the embodiments of the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation on the embodiments of the present utility model. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. It should also be noted that in the description of the present utility model, unless otherwise clearly specified and limited, the terms "set", "installed", "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0029] The following is combined with Figures 1-7 Describe the specific implementation method of the battery swapping locking device of the present utility model.

[0030] As Figure 1 and Figure 2 shown, the present utility model provides a battery swapping locking device, including: a frame 10, arranged on the vehicle-mounted bottom bracket for arranging a battery box; a locking mechanism, arranged on the frame 10, the locking mechanism includes a locking tongue assembly, a driver 30 and a limiting assembly; wherein, the locking tongue assembly is rotatably installed on the frame 10, the locking tongue assembly includes a movable member 21, the driving end and the locking end of the movable member 21 are respectively located on both sides of the rotation axis of the locking tongue assembly, the driving end is connected to the driver 30, so that under the drive of the driver 30, the locking end swings between an unlocking position and a locking position; in the locking position, the locking end can be embedded into the locking structure of the battery box, and the limiting assembly can clamp the locking end. By designing the locking tongue assembly in a rotatable form, the reliability and durability of the locking mechanism are significantly improved.

[0031] Among them, the rotational movement of the movable member 21 replaces the linear movement of the traditional plug-type or swing-arm hook-type, which can reduce the deformation and jamming of the locking components caused by external impacts, and enhance the stability of the locking system. It can be understood that the movable member 21 can be a structural member in the shape of a rod or a plate, etc., and can be specifically designed according to the corresponding locking structure on the lower surface of the battery box. The driver 30 is connected to the driving end of the movable member 21, and the position change of the locking end can be controlled by a motor or other driving methods to realize the automatic locking and unlocking functions, greatly improving the efficiency of the battery swapping process. The function of the limiting assembly is that after the locking end is embedded into the locking structure of the battery box, it can further clamp the locking end, ensure the stability in the locked state, reduce the displacement risk of the battery box caused by vibration or collision during vehicle driving, not only improve the locking safety, but also optimize the matching accuracy between the battery box and the vehicle-mounted bottom bracket, and reduce the vibration and noise problems caused by too large matching gaps.

[0032] In addition, due to the compact design of the locking mechanism of the present utility model, it can reduce the occupation of the vehicle interior space, help improve the overall space utilization rate, reduce the weight of the system, help simplify the battery swapping process, and enable users to complete the battery replacement operation more conveniently and quickly.

[0033] The above-mentioned limiting assembly can also be different types of manual or automatic clamping mechanisms, such as screw clamping mechanisms, hydraulic or pneumatic driven clamping devices, electromagnetic locking devices, etc. According to a battery swapping battery locking device of the present utility model, the limiting assembly includes: a limiting plate 41, the limiting plate 41 is fixed to the frame 10, a movable inclined block 44, the movable inclined block 44 has a degree of freedom of oblique sliding relative to the bottom surface of the frame 10, and at least a part of the movable inclined block 44 is located on the swinging path of the movable member 21; during the process that the locking end of the movable member 21 moves from the unlocking position to the locking position, the locking end of the movable member 21 pushes the movable inclined block 44 to slide obliquely upward to gradually approach the limiting plate 41, and clamps the locking end of the movable member 21 between the movable inclined block 44 and the limiting plate 41. Through the combined use of the movable inclined block 44 and the limiting plate 41, a stable clamping of the locking end of the movable member 21 is achieved.

[0034] Specifically, the relative position between the movable inclined block 44 and the limiting plate 41 and the oblique sliding angle of the movable inclined block 44 are carefully designed. When the locking end of the movable member 21 moves towards the locking position under the action of the driver 30, the locking end will contact the movable inclined block 44 and push it upward along the inclined surface. As the locking end continuously approaches the locking position, the movable inclined block 44 will also rise accordingly. When the locking end completely enters the locking position, the space formed between the movable inclined block 44 and the limiting plate 41 can just clamp the locking end to ensure that it will not easily come out. The oblique sliding design of the movable inclined block 44 can provide a self-locking mechanism, that is, as the locking end goes deeper, the movable inclined block 44 will squeeze the locking end tighter and tighter, thus forming a stable locking state. At the same time, the oblique sliding design can also adapt to the position change of the locking end under different conditions to ensure that each locking can be carried out smoothly. In addition, the combination of the fixed position of the limiting plate 41 and the adjustability of the movable inclined block 44 makes the locking mechanism both reliable and flexible.

[0035] It can be understood that the oblique sliding ability of the movable inclined block 44 can be achieved by setting an inclined surface structure on the frame 10, and a corresponding sliding mating inclined surface structure can also be set at the bottom of the movable inclined block 44. Such as Figure 3As shown, according to a preferred embodiment of the present utility model, the limit assembly of the battery swapping locking device preferably includes: a limit plate 41, a fixed inclined block 43, and a movable inclined block 44. Among them, the limit plate 41 preferably has an inverted L shape. The vertical part of the limit plate 41 is fixed to the frame 10, and a long notch 42 is provided on the horizontal part of the limit plate 41; the fixed inclined block 43 is arranged below the horizontal part of the limit plate 41; the movable inclined block 44 is slidably arranged on the fixed inclined block 43, and the contact surface between the movable inclined block 44 and the fixed inclined block 43 is an inclined surface. A guide rod 45 is provided at the top of the movable inclined block 44, and the guide rod 45 is in limit fit with the long notch 42; the movable inclined block 44 is located on the swinging path of the movable member 21; during the process of the locking end of the movable member 21 moving from the unlocking position to the locking position, the locking end of the movable member 21 pushes the movable inclined block 44 to move along the length direction of the long notch 42, and the movable inclined block 44 rises along the inclined surface to gradually approach the horizontal part of the limit plate 41, clamping the locking end of the movable member 21 between the movable inclined block 44 and the horizontal part of the limit plate 41. Through the design of the limit plate 41 and the movable inclined block 44, the device realizes the stable clamping of the movable member 21 in the locked state.

[0036] Specifically, when the locking end of the movable member 21 moves towards the locking position, it will contact the movable inclined block 44 and push it to move along the long notch 42. Due to the inclined surface contact relationship between the movable inclined block 44 and the fixed inclined block 43, during the movement, the movable inclined block 44 will rise under the action of the inclined surface and gradually approach the horizontal part of the limit plate 41. Finally, the locking end will be clamped between the movable inclined block 44 and the horizontal part of the limit plate 41 to form a stable locking state. By the combined use of the inclined surface and the guide rod 45, the movable inclined block 44 can smoothly rise along the fixed inclined block 43, ensuring the smooth progress of the locking action. At the same time, the rising action of the movable inclined block 44 can also generate a certain pre-tightening force, making the locking end not easy to loosen while being clamped, further improving the reliability of the locking.

[0037] In order to ensure self-locking between the movable inclined block 44 and the fixed inclined block 43 under the locking force state, considering that the friction coefficient of steel is usually μ = 0.15, it is calculated that the friction angle α required for self-locking is about 8.53°. Therefore, the battery swapping locking device of the present utility model preferably ensures that the angle of the inclined surface is less than 8.53° to achieve a reliable self-locking function.

[0038] Further, according to a battery swapping lock device of the present utility model, the limit assembly includes a first elastic member 46; the first elastic member 46 is connected between the guide rod 45 and the limit plate 41 to provide an elastic force for resetting the movable inclined block 44. In the locked state, the movable inclined block 44 moves upward along the inclined surface under the thrust of the locking end of the movable member 21, compressing the first elastic member 46 to store energy. When unlocking is required, the movable member 21 rotates under the action of the driver 30, releasing the pressure on the movable inclined block 44. At this time, the restoring force of the first elastic member 46 drives the movable inclined block 44 to slide down along the inclined surface back to the initial position, that is, to reset. This design not only simplifies the unlocking process but also ensures that each locking and unlocking action can be carried out smoothly, improving the reliability and service life of the device. In addition, through the reset force provided by the first elastic member 46, the gap change caused by manufacturing tolerances or wear can be compensated to a certain extent, maintaining the tight fit of the locking system.

[0039] As Figure 4 and Figure 5 shown, according to a battery swapping lock device of the present utility model, the latch assembly includes: a rotating shaft 22, and a movable member 21 is installed at the top of the rotating shaft 22; a bearing member 23 is provided between the frame 10 and the rotating shaft 22 to enable the rotating shaft 22 to have a degree of freedom of rotation relative to the frame 10 about the rotation axis. By providing the bearing member 23 between the rotating shaft 22 and the frame 10, the movable member 21 can freely rotate around the rotation axis of the rotating shaft 22 under the action of the driver 30, thereby achieving a smooth transition from the unlocked position to the locked position. The design of the bearing member 23 ensures that the rotation action of the movable member 21 is smooth and precise, reduces the frictional resistance during rotation, and extends the service life of the locking mechanism. In addition, the type of the bearing member 23 can be selected according to the actual working conditions, such as a sliding bearing sleeve, a deep groove ball bearing, a needle bearing, or a self-aligning bearing, etc., to adapt to different load conditions and space limitations.

[0040] As Figure 7As shown, according to a battery replacement locking device of the utility model, a radially extending swing arm plate 24 is provided at the bottom end of the rotating shaft 22; the lock tongue assembly includes a second elastic member 25; the second elastic member 25 is connected between the frame 10 and the swing arm plate 24, and provides an elastic force to keep the locking end in the locked position. One end of the second elastic member 25 (usually a spring) is fixed to the frame 10, and the other end is connected to the swing arm plate 24. When the locking end of the movable member 21 is in the unlocked position, the second elastic member 25 is in a stretched state; when the locking end of the movable member 21 is driven to the locked position, the second elastic member 25 will naturally contract, generating a tendency force to keep the locking end in the locked position. Through the second elastic member 25, it is ensured that the movable member 21 always tends to the locked state when there is no external force, thereby enhancing the reliability of the locking. At the same time, the presence of the second elastic member 25 also enables the locking end to apply continuous pressure to the locking structure of the battery box in the locked state, reducing the loosening of the locking end caused by bumps or vibrations during the vehicle's driving. When unlocking is required, the unlocking action can be completed by overcoming the elastic force of the second elastic member 25. In addition, the setting of the second elastic member 25 also provides a certain buffering effect for the locking mechanism, which can absorb part of the dynamic load, reduce the wear of the locking components, and extend the service life of the equipment.

[0041] Furthermore, since the angle of the swing arm plate 24 changes continuously during the swinging process, in order to prevent the connection of the second elastic member 25 from being affected, the second elastic member 25 and the swing arm plate 24 are preferably connected as follows: Figure 7 The two ends of the intermediate connecting member are respectively hingedly connected to the swing arm plate 24 and the second elastic member 25, so that during the swinging process of the swing arm plate 24, the influence of the posture change of the swing arm plate 24 on the connection state of the second elastic member 25 can be eliminated through the intermediate connecting member.

[0042] According to a battery replacement locking device of the utility model, a plurality of locking mechanisms are provided on the frame 10, which are respectively used to lock and cooperate with the multiple locking structures of the battery box. By setting multiple locking points at different positions of the battery box, the stability and reliability of the locking are improved. Each locking mechanism includes a lock tongue assembly, a driver 30 and a limit assembly, which act together at their respective locking positions to ensure that the battery box can be firmly fixed on the vehicle base at each key point.

[0043] The layout of multiple locking mechanisms can be optimized according to the actual shape and size of the battery box to ensure that there is sufficient support and locking at the key stress points of the battery box, thereby evenly distributing the locking force and reducing local stress concentration.

[0044] like Figure 1 , Figure 2 and Figure 6As shown, for a battery swapping battery locking device according to the present utility model, the locking assemblies of every two locking mechanisms share one driver 30; fish-eye joints 31 are respectively arranged at both ends of the driver 30, and through the fish-eye joints 31, both ends of the driver 30 are hingedly connected to the driving ends of two movable members 21. Among them, by using one shared driver 30 to simultaneously control the actions of two locking mechanisms, the effective utilization of resources is achieved. The fish-eye joint 31, as a special universal joint, allows the driver 30 to adapt to a certain angular change while transmitting power, ensuring a reliable connection between the movable member 21 and the driver 30 even when the vehicle encounters bumps or vibrations during driving.

[0045] When the driver 30 acts, the fish-eye joint 31 can ensure that the power is evenly transmitted to the two movable members 21, enabling both of them to synchronously turn from the unlocked position to the locked position, or vice versa. This not only simplifies the layout of the locking mechanism, reduces the number of driving components, but also improves the overall coordination and stability of the system. At the same time, sharing the driver 30 helps to reduce the cost and complexity of the device, making the entire locking device more compact and lightweight.

[0046] To ensure that the battery box can be accurately positioned when placed on the vehicle-mounted base, and to avoid locking failure or unstable locking caused by position deviation, as Figure 1 shown, for a battery swapping battery locking device according to the present utility model, the frame 10 preferably further is provided with one or more guide posts 11 for positioning and cooperating with the positioning holes at the bottom of the battery box. Specifically, the guide posts 11 can guide the battery box to quickly and accurately enter the predetermined position, and through the cooperation with the positioning holes at the bottom of the battery box, preliminary positioning is achieved. When the battery box is lowered, the guide posts 11 will first be inserted into the positioning holes to help determine the correct position of the battery box, providing a basis for subsequent locking actions.

[0047] Furthermore, to achieve the rapid positioning and precise alignment of the battery box during placement, for a battery swapping battery locking device according to the present utility model, the guide post 11 preferably includes a primary guide portion and a secondary guide portion. Among them, the top end of the primary guide portion is conical, and from the primary guide portion to the secondary guide portion, the guide post 11 forms a multi-stage structure with a gradually increasing cross-sectional area step by step. Specifically, the conical top end of the primary guide portion can guide the positioning hole at the bottom of the battery box to quickly find the position of the guide post 11. The conical design enables the conical part to smoothly guide the positioning hole to move closer to the center even when there is a certain deviation in the placement of the battery box. As the battery box descends, the positioning hole will gradually align with the primary guide portion and continue to move downward until it completely cooperates with the secondary guide portion with a larger cross-sectional area. The design of the multi-stage structure not only ensures the accuracy of positioning, but also provides better centering and guiding properties, enabling the battery box to be stably positioned to the correct position.

[0048] The present utility model further provides a working machine, which includes the battery swapping and locking device of the above-described embodiment. In the embodiments of the present utility model, the type of the working machine is not limited. For example, the working machine may be an excavator, a crane, a loader, an electric forklift, an electric mining truck, etc. In other words, as long as the working machine can use the battery swapping and locking device in the present utility model. By adopting the battery swapping and locking device of the present utility model, the working machine can achieve rapid battery replacement, thereby improving work efficiency and operation continuity.

[0049] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials, or characteristics described in connection with the embodiment or mode are included in at least one embodiment or mode of the embodiments of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials, or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or modes described in this specification and the features of different embodiments or modes.

[0050] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the present utility model has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present utility model.

Claims

1. A battery lock device for battery replacement, characterized in that: include: A frame (10) is arranged on a vehicle-mounted bottom bracket and is used to arrange a battery box; A locking mechanism, arranged on the frame (10), the locking mechanism comprising a locking tongue assembly, a driver (30) and a limit assembly; The lock tongue assembly is rotatably mounted on the frame (10), the lock tongue assembly comprises a movable part (21), a driving end and a locking end of the movable part (21) are respectively located on both sides of a rotation axis of the lock tongue assembly, and the driving end is connected to the driver (30) so that the locking end is driven by the driver (30) to swing between an unlocking position and a locking position; In the locking position, the locking end can be embedded in the locking structure of the battery box, and the limiting assembly can clamp the locking end.

2. The battery replacement locking device according to claim 1, characterized in that: The limit assembly comprises: A limit plate (41), wherein the limit plate (41) is fixed to the frame (10) a movable inclined block (44), the movable inclined block (44) having a degree of freedom of oblique sliding relative to the bottom surface of the frame (10), and at least a portion of the movable inclined block (44) being located on a swinging path of the movable member (21); During the process of the locking end of the movable member (21) moving from the unlocking position to the locking position, the locking end of the movable member (21) pushes the movable inclined block (44) to slide upward in an oblique direction to gradually approach the limiting plate (41), thereby clamping the locking end of the movable member (21) between the movable inclined block (44) and the limiting plate (41).

3. The battery replacement locking device according to claim 2, characterized in that: The limiting assembly comprises a fixed inclined block (43) which is arranged below the limiting plate (41); The movable inclined block (44) is slidably disposed on the fixed inclined block (43), and the contact surface between the movable inclined block (44) and the fixed inclined block (43) is an inclined surface; The limiting plate (41) is provided with a long slot (42), and a guide rod (45) is provided on the top of the movable inclined block (44), and the guide rod (45) is limitedly fitted in the long slot (42).

4. The battery replacement locking device according to claim 3, characterized in that: The limiting assembly comprises a first elastic member (46); The first elastic member (46) is connected between the guide rod (45) and the limiting plate (41) to provide an elastic force for returning the movable inclined block (44) to its original position.

5. The battery replacement locking device according to claim 1, characterized in that: The lock tongue assembly comprises: A rotating shaft (22), wherein the movable member (21) is mounted on a top end of the rotating shaft (22); A bearing member (23) is arranged between the frame (10) and the rotating shaft (22), so that the rotating shaft (22) has a degree of freedom to rotate relative to the frame (10) around the rotation axis.

6. The battery replacement locking device according to claim 5, characterized in that: A radially extending swing arm plate (24) is provided at the bottom end of the rotating shaft (22); The locking tongue assembly comprises a second elastic member (25); The second elastic member (25) is connected between the frame (10) and the swing arm plate (24), and provides an elastic force for enabling the locking end to maintain the locking position.

7. The battery replacement locking device according to any one of claims 1 to 6, characterized in that: The frame (10) is provided with a plurality of locking mechanisms, which are respectively used to lock and cooperate with a plurality of locking structures of the battery box; The locking assemblies of every two locking mechanisms share a driver (30); Fisheye joints (31) are respectively provided at both ends of the driver (30), and through the fisheye joints (31), the two ends of the driver (30) are respectively hingedly connected to the driving ends of the two movable parts (21).

8. The battery replacement locking device according to any one of claims 1 to 6, characterized in that: The frame (10) is provided with one or more guide columns (11) for positioning with positioning holes at the bottom of the battery box.

9. The battery replacement locking device according to claim 8, characterized in that: The guide column (11) comprises a primary guide portion and a secondary guide portion; The top end of the primary guide portion is tapered, and from the primary guide portion to the secondary guide portion, the guide column (11) forms a multi-stage structure with a cross-sectional area that increases step by step.

10. A working machine, characterized in that: Including the battery replacement battery locking device as described in any one of claims 1-9.

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