Anti-falling device, battery transfer system, battery swap station or energy storage station

Abstract

The invention discloses an anti-falling device, a battery transfer system and a battery replacement station or an energy storage station. The anti-falling device comprises a brake part which is arranged to abut against the stand column at a brake position and loosen the stand column at a release position; and the triggering mechanism is installed on the battery transfer equipment, and the triggering mechanism is arranged to enable the brake part to be located at the release position when the lifting movement of the battery transfer equipment is within the preset speed range and trigger the brake part to be switched to the brake position when the lifting movement of the battery transfer equipment exceeds the preset speed range. When the descending speed of the battery transfer equipment exceeds the preset range, braking operation is automatically triggered and executed, the braking piece is switched to the braking position from the releasing position, stall falling of the battery transfer equipment is prevented by abutting against the stand column, and braking is timely and accurate; and braking is achieved in a mechanical mode through cooperation of the braking piece and the triggering mechanism, and compared with electrical control in the prior art, the braking device is more reliable and stable.

Description

[0001] This application is a division of a Chinese invention patent with an application date of December 31, 2020, application number CN202011634203.8, and name “Anti-fall device, battery transfer system, battery swap station or energy storage station”. Technical Field

[0002] The invention relates to a fall prevention device, a battery transfer system, a battery replacement station or an energy storage station. Background Art

[0003] At present, battery swap stations are widely used for battery swapping of new energy vehicles. A large number of battery packs are usually stored on the battery racks in the battery swap stations, and the battery racks charge the battery packs while storing them. Batteries are usually taken out or put in from different heights of the battery racks by lifting and lowering the battery transfer equipment.

[0004] A Chinese patent application with publication number CN211733721U discloses a battery transfer device, which mainly includes a main frame, a battery lifting mechanism, a guide mechanism and other structures, wherein the battery lifting mechanism is located in the main frame and can move vertically along the main frame, and the main frame with the battery lifting mechanism moves along the extension direction of the guide mechanism, which is equivalent to the horizontal movement of the main frame. The main frame needs to realize the function of horizontal movement, and the problem to be solved by the public document is that the battery transfer device is slow in taking and placing the power battery, and cannot be quickly adjusted to the position for taking and placing the power battery. Therefore, the main frame will inevitably not be too high in the vertical direction. Therefore, there is no anti-fall function design in the public document.

[0005] The Chinese patent application with publication number CN111908390 A discloses a fully protected cargo platform and stacker, which activates the safety clamp assembly to brake when the cargo component is at an abnormal operating speed due to overspeed or the steel wire rope of the cargo platform is broken or detached. However, the safety clamp assembly in the public document includes a safety clamp lever, a fixed pulley action spring, a connecting chain, a safety clamp, etc., and the structure is large and complicated.

[0006] The above-mentioned transfer equipment may stall during the lifting process, and the transfer equipment may lose control and fall rapidly. Some of the current limit devices in the prior art are only used for stroke control and cannot limit the fall of the transfer equipment. The use of sensors for speed detection requires that the power be kept on. Once the power is lost, the sensor cannot detect the stall at all, and this is the time when the transfer equipment is most likely to fall, which will cause the transfer equipment to be damaged. This often causes all battery racks associated with the faulty transfer equipment to be unable to complete the battery placement, seriously affecting operation. Summary of the invention

[0007] The technical problem to be solved by the present invention is to overcome the defects in the prior art that battery transfer equipment may stall and fall, causing damage to the equipment and affecting operation, and to provide an anti-fall device, a battery transfer system, a battery swap station or an energy storage station.

[0008] The present invention solves the above technical problems through the following technical solutions:

[0009] An anti-falling device is used to stop a battery transfer device in a battery exchange station from falling. The battery transfer device is configured to vertically lift and move a plurality of battery bins arranged in the vertical direction of a battery rack to take and place batteries. The battery rack includes a column arranged in the lifting direction of the battery transfer device. The anti-falling device includes:

[0010] A brake member, which is mounted on the battery transport device and cooperates with the column, and the brake member is configured to abut against the column in a braking position and release the column in a releasing position;

[0011] A trigger mechanism is installed on the battery transfer equipment, and the trigger mechanism is configured to place the brake member in the release position when the lifting and lowering movement of the battery transfer equipment is within a preset speed range, and trigger the brake member to switch to the braking position when the lifting and lowering movement of the battery transfer equipment exceeds the preset speed range.

[0012] This solution uses a trigger mechanism to drive the brake parts to brake and release at different speeds. It will not interfere with the movement when the battery transfer equipment is operating normally, and it can brake in time when it falls to prevent the battery transfer equipment from stalling and falling. This solution automatically triggers and performs the braking operation when the descent speed of the battery transfer equipment exceeds the preset range, so that the brake parts switch from the release position to the braking position, and prevent the battery transfer equipment from stalling and falling by abutting the column. The braking is timely and accurate; and the braking is achieved mechanically through the cooperation of the brake parts and the trigger mechanism, which is more reliable and stable than the electrical control in the prior art.

[0013] Preferably, at least one moving part of the brake member moves when the lifting and lowering movement of the battery transport device exceeds the preset speed range, thereby driving the brake member to switch from the release position to the braking position.

[0014] The moving part of the brake member is switched from a release position to a brake position by movement, thereby realizing the anti-falling function of the battery transport equipment in a stalled state.

[0015] Preferably, the trigger mechanism comprises a linkage assembly, wherein the linkage assembly is connected to the moving part of the brake member and is used to drive the moving part of the brake member to move.

[0016] The linkage assembly is used to transmit motion and ensure that the moving part of the brake member can be driven in time, so that the brake member can act in time according to the speed change.

[0017] Preferably, the trigger mechanism also includes a sensing component for sensing the lifting speed of the battery transport device, and the linkage component cooperates with the sensing component and is used to generate displacement when the lifting speed of the battery transport device exceeds a preset speed range, thereby driving the moving part of the brake to move.

[0018] The sensing component is used to sense the change in speed, thereby driving the linkage component to act in time.

[0019] Preferably, the induction component includes a pulley component, the pulley component contacts a relatively stationary contact member and moves along the contact member when the battery transport device descends, and the linkage component is connected to the pulley component.

[0020] The sensing component senses the change in the descent speed through the rotation speed of the pulley component, that is, it uses mechanical movement to sense the change in speed. Compared with other types of sensing forms, it responds quickly and can operate in the event of a power outage to ensure the effectiveness of the execution.

[0021] Preferably, the pulley assembly is connected to two pulleys on the side wall of the battery transporting equipment, and the contact piece is a safety rope. After the safety rope is passed through between the two pulleys and wrapped around the corresponding pulleys, it is respectively connected to the positions at both ends of the lifting stroke of the battery transporting equipment.

[0022] During the descent of the battery transport equipment, sliding friction occurs between the pulley and the relatively stationary safety rope. The safety rope drives the pulley to rotate. If the safety rope descends too fast, the rotation speed of the pulley will exceed the set value, triggering the action of the linkage component.

[0023] Preferably, the linkage assembly comprises a swing arm provided on any of the pulleys and set to swing within a preset swing range, a rotating frame coaxially connected to the pulley and set to rotate within a preset range, and the rotating frame is connected to the moving part of the brake member.

[0024] When the descending speed of the battery transport device exceeds a preset speed range, the swing arm exceeds the preset swing range and abuts against the rotating frame, thereby driving the rotating frame to rotate so that the moving part of the brake member moves to the braking position.

[0025] The movable part of the swing arm needs to swing to trigger the rotating part, and the other part of the swing arm rotates with the pulley. The swing amplitude of the swing arm increases as the rotation speed of the pulley increases. When the pulley is at normal speed, the swing arm rotates with the pulley, and the swing amplitude of the swing arm is small and still rotates together, so it will not swing out and will not trigger the rotating part. In the case of overspeed of the pulley, the swing arm reaches the rotating part and drives the rotating frame to move together. In this way, the rotation of the rotating frame can be triggered only in the overspeed state to achieve the position switching of the brake part.

[0026] Preferably, one end of the swing arm close to the edge of the pulley is connected to the pulley through an elastic member, and the end of the swing arm connected to the elastic member increases the swing amplitude as the rotation speed of the pulley assembly increases.

[0027] The movable part of the swing arm needs to have a certain swing amplitude, and the swing amplitude of the movable part is limited by an elastic member to avoid uncontrolled swinging and interference with the lifting and lowering movement of the battery transport equipment.

[0028] Preferably, one end of the rotating frame is connected to an elastic member, and one end of the rotating frame is in contact with the swing arm and rotates under the push of the swing arm.

[0029] The rotating frame is connected by elastic parts to limit the swing amplitude of the movable part, so as to avoid the brake parts from being mistakenly triggered to perform braking operations during the normal lifting and moving process of the battery transport equipment.

[0030] Preferably, a trigger groove is provided on the rotating frame, and the anti-falling device further comprises a trigger switch, wherein the trigger switch is extended out of the trigger groove when the rotating frame is in an initial position, and the trigger switch is pressed when the rotating frame swings.

[0031] The trigger groove swings along with the rotating frame, whereby the trigger switch that was not compressed originally will be compressed by other parts of the rotating frame, thereby generating a trigger signal, which is convenient for confirming that the braking operation is triggered.

[0032] Preferably, the linkage assembly includes a connecting rod unit, which is connected to the brake member, wherein when the descending speed of the battery transport equipment exceeds a preset speed range, the sensing assembly drives the connecting rod unit to move, thereby driving the moving part of the brake member to move to the braking position.

[0033] The connecting rod unit operates reliably and can drive multiple brake parts to work simultaneously.

[0034] Preferably, the anti-fall device includes a trigger mechanism and a plurality of brake members, wherein the plurality of brake members are arranged at the four ends of the battery transfer equipment and correspond one-to-one to the columns, the trigger mechanism is arranged on any side of the battery transfer equipment along its telescopic direction, the brake members arranged on the same side along the telescopic direction are connected by the connecting rod unit to realize synchronous position switching of the brake members on the same side, and the brake members on different sides are connected to the connecting rod units on both sides by at least one shaft rod arranged through the bottom plate of the battery transfer equipment to realize synchronous position switching of the brake members on different sides.

[0035] By linking the same trigger mechanism, multiple brake parts can be ensured to brake at the same time, avoiding vibration and tilting of the car caused by asynchronous braking of the brake parts, as well as insufficient braking force, thereby improving stability and effectiveness.

[0036] Preferably, the braking member includes a fixed block fixed on the battery transfer device and a slider movably arranged in a slide groove of the fixed block, the slider is connected to the trigger mechanism, and the slider moves along the slide groove to realize the switching of the braking member between the release position and the braking position.

[0037] Sliders are easier to trigger and can switch between different states by limiting their movement trajectory.

[0038] A battery transport system comprises a battery rack, and the battery transport system also comprises the anti-fall device.

[0039] Preferably, the battery rack has a guiding mechanism along the vertical direction, and the guiding mechanism includes four guide columns arranged in one-to-one correspondence with the four ends of the battery transfer equipment. The battery transfer equipment is located between the two columns of battery racks, and the four guide columns and the columns reuse the four columns of the two columns of battery racks close to the battery transfer equipment. The reused columns have guiding surfaces that cooperate with the battery transfer equipment.

[0040] The four guide columns reuse the columns of the battery rack, and the battery transfer system can operate directly between two opposite battery racks without the need to install additional guide columns. This simplifies the overall structure, makes the connection between the two more compact, and can improve the guiding strength and reduce costs. The installation process saves manpower and material resources and improves the operating efficiency of the entire system.

[0041] Furthermore, when the battery transport equipment is guided by the columns, since the height of the columns is directly related to the height of the battery positions of the battery rack, the problem of inaccurate height positioning caused by the inconsistency between the height reference of the battery transport equipment and the height reference of the battery position is avoided.

[0042] A battery swap station or energy storage station, wherein the battery swap station comprises the battery transfer system.

[0043] The positive and progressive effect of the present invention is that the present invention drives the brake member to perform braking and release respectively under different speed conditions through the trigger mechanism. It will not interfere with the movement when the battery transfer equipment is operating normally, and it can brake in time when it falls to prevent the battery transfer equipment from stalling and falling. The present invention automatically triggers and performs the braking operation when the descending speed of the battery transfer equipment exceeds the preset range, so that the brake member switches from the release position to the braking position, and prevents the battery transfer equipment from stalling and falling by abutting the column, and the braking is timely and accurate; and the braking is achieved mechanically through the cooperation of the brake member and the trigger mechanism, which is more reliable and stable than the electrical control in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the three-dimensional structure of a battery transport system according to a preferred embodiment of the present invention.

[0045] Figure 2 It is a schematic diagram of the side structure of a battery transport device according to a preferred embodiment of the present invention.

[0046] Figure 3 It is a schematic diagram of the overall structure of the anti-falling device of a preferred embodiment of the present invention.

[0047] Figure 4 It is a structural schematic diagram of one side of the anti-falling device of a preferred embodiment of the present invention.

[0048] Figure 5 Schematic diagram of the structure of a brake member according to a preferred embodiment of the present invention.

[0049] Figure 6 It is a three-dimensional structural schematic diagram of the trigger mechanism of the preferred embodiment of the present invention.

[0050] Figure 7 Another three-dimensional structural schematic diagram of the trigger mechanism of a preferred embodiment of the present invention.

[0051] Figure 8 Schematic diagram of the top view of the trigger mechanism of a preferred embodiment of the present invention.

[0052] Fig. 9 This is a schematic diagram of a preferred embodiment of the present invention when the linkage component is not triggered.

[0053] Fig.10 It is a schematic diagram of a linkage component of a preferred embodiment of the present invention being triggered. DETAILED DESCRIPTION

[0054] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0055] like Figure 1-Figure 10 As shown, the present invention discloses a battery transport system for use in a battery swap station or an energy storage station. Figure 1 As shown, the battery transfer system of this embodiment includes a battery rack 1, and the battery rack 1 has a guide mechanism along the vertical direction. The guide mechanism includes four guide columns arranged in a one-to-one correspondence with the four ends of the battery transfer equipment 2. The battery transfer equipment 2 is located between two rows of battery racks 1. The battery transfer equipment 2 is configured to be able to vertically lift and move a plurality of battery positions arranged along the vertical direction of the battery rack 1 to take and place batteries. The columns 11 are arranged along the lifting and lowering stroke direction of the battery transfer equipment 2. The four guide columns and the columns 11 reuse the four columns 11 of the two rows of battery racks 1 close to the battery transfer equipment 2.

[0056] In a further preferred embodiment, the reused column 11 has a guide surface that matches the battery transport device. The four guide columns reuse the columns 11 of the battery rack 1, and the battery transport system can be directly operated between two opposite battery racks without installing additional guide columns, which simplifies the overall structure, makes the connection between the two more compact, and can improve the guide strength, reduce costs, save manpower and material resources during the installation process, and improve the operating efficiency of the entire system.

[0057] Furthermore, when the battery transport equipment is guided by the column, since the height of the column 11 is directly related to the height of the battery position of the battery rack 1, the problem of inaccurate height positioning caused by the inconsistency between the height reference of the battery transport equipment and the height reference of the battery position is avoided.

[0058] That is, the battery transport device 2 maintains a fixed relative position with the battery rack 1 in the horizontal direction, which reduces the positioning requirements in the horizontal direction and facilitates control.

[0059] like Figure 1-Figure 3 As shown, the present invention discloses an anti-falling device for stopping the falling state of the battery transfer equipment 2 in the battery exchange station. The anti-falling device of this embodiment includes a brake member 3, which is installed on the battery transfer equipment 2 and cooperates with the column 11. The brake member 3 is configured to abut the column 11 in a braking position and release the column 11 in a release position.

[0060] like Figure 1As shown, the anti-falling device of this embodiment also includes a trigger mechanism 4, which is installed on the battery transport equipment 2, and the trigger mechanism 4 is configured to put the brake member 3 in the release position when the lifting and moving of the battery transport equipment 2 is within the preset speed range, and trigger the brake member 3 to switch to the braking position when the lifting and moving of the battery transport equipment 2 exceeds the preset speed range. The trigger mechanism 4 drives the brake member 3 to perform braking and release respectively under different speed conditions. When the battery transport equipment 2 is operating normally, it will not interfere with the movement, and when it falls, it can brake in time to prevent the battery transport equipment 2 from stalling and falling. This embodiment automatically triggers and performs the braking operation when the descending speed of the battery transport equipment exceeds the preset range, so that the brake member switches from the release position to the braking position, and prevents the battery transport equipment from stalling and falling by abutting the column 11, and the braking is timely and accurate; and through the cooperation of the brake member and the trigger mechanism, the braking is achieved mechanically, which is more reliable and stable than the electrical control in the prior art.

[0061] In a preferred embodiment, the trigger mechanism 4 includes a linkage component, which is connected to the moving part of the brake member 3 and is used to drive the moving part of the brake member 3 to move. The linkage component is used to transmit motion to ensure that the moving part of the brake member 3 can be driven in time, so that the brake member 3 can act in time according to the speed change. Among them, the trigger mechanism 4 also includes a sensing component for sensing the lifting speed of the battery transport device 2. The linkage component cooperates with the sensing component and is used to generate displacement when the lifting speed of the battery transport device 2 exceeds a preset speed range, thereby driving the moving part of the brake member 3 to move. The sensing component is used to sense the change in speed, so as to drive the linkage component to act in time.

[0062] like Figure 3 and Figure 4 As shown, in a preferred embodiment, the linkage assembly includes a connecting rod unit 44, and the connecting rod unit 44 is connected to the brake member 3, wherein when the descending speed of the battery transport device 2 exceeds the preset speed range, the sensing assembly drives the connecting rod unit 44 to move, thereby driving the moving part of the brake member 3 to move to the braking position. The connecting rod unit 44 operates reliably and can drive multiple brake members 3 to work simultaneously. In other embodiments, the linkage assembly can also be various linkage mechanisms, such as mechanical transmission mechanisms such as wire ropes, gear racks, etc.

[0063] like Figure 3As shown, in a preferred embodiment, the anti-fall device includes a trigger mechanism 4 and a plurality of brakes 3, wherein the plurality of brakes 3 are arranged at the four ends of the battery transport device 2 and correspond to the columns 11 one by one, the trigger mechanism 4 is arranged at any side of the battery transport device 2 along its telescopic direction, the brakes 3 arranged on the same side along the telescopic direction are connected by a connecting rod unit 44 to achieve synchronous position switching of the brakes 3 on the same side, and the brakes 3 on different sides are connected to the connecting rod units 44 on both sides by at least one shaft 45 arranged through the bottom plate of the battery transport device 2 to achieve synchronous position switching of the brakes 3 on different sides. By linking the same trigger mechanism 4, it can be ensured that the plurality of brakes 3 brake at the same time, avoiding the vibration and tilt of the car caused by the asynchronous braking of the brakes 3, and the situation of insufficient braking force, thereby improving stability and effectiveness.

[0064] Although one trigger mechanism 4 is used to drive multiple brake members 3 in the preferred embodiment, in other embodiments, multiple trigger mechanisms 4 may be provided to correspond to multiple brake members 3 respectively. When the trigger mechanisms 4 are properly provided, simultaneous triggering may be ensured to a certain extent.

[0065] like Figure 5 As shown, in a preferred embodiment, the brake member 3 includes a fixed block 33 fixed on the battery transport device 2 and a slider 32 movably arranged in the slide slot 31 of the fixed block 33. The slider 32 is connected to the trigger mechanism 4. The slider 32 moves along the slide slot 31 to realize the brake member 3 switching from the release position to the braking position. The slider 32 moves upward when the lifting and lowering movement of the battery transport device 2 exceeds the preset speed range. At this time, since the extension direction of the slide slot 31 gradually moves upward toward the side of the column 11, the slider 32 gradually approaches the column 11 and contacts the column 11 to realize braking during the process of switching from the release position below the slide slot 31 to the braking position above the slide slot 31. The slider 32 thus arranged is easier to be triggered, and can realize the switching of different states by limiting the extension direction of the slide slot 31.

[0066] In other embodiments, the slider 32 may be driven by other known mechanisms, such as a connecting rod mechanism driving the slider 32 to move, or the trigger mechanism 4 driving the cam to rotate to achieve the movement of the slider 32. In other embodiments, the slider 32 may also be a structure of various shapes, such as a shape with grooves or patterns on the surface.

[0067] like Figure 3 and Figure 4As shown, in a preferred embodiment, the sensing component includes a pulley assembly 41, which contacts a relatively stationary safety rope 5 and moves along the safety rope 5 when the battery transport device 2 descends. The sensing component senses the change of the descending speed through the rotation speed of the pulley assembly 41, that is, it senses the change of the speed by mechanical motion. Compared with other types of sensing forms, it responds faster and can operate in the case of power failure to ensure the effectiveness of execution. In other embodiments, the sensing component can also be other mechanisms that can sense the occurrence of stall in a mechanical state.

[0068] like Figure 4 As shown, in a further preferred embodiment, the pulley assembly 41 is two pulleys 411 connected to the side wall of the battery transport device 2, and the two pulleys 411 are driven by the safety rope 5. Among them, after the safety rope 5 is passed through the two pulleys 411 and wound around the corresponding pulley 411, it is respectively connected to the positions at the two ends of the lifting stroke of the battery transport device 2, that is, the two ends are fixed. During the descent of the battery transport device 2, the pulley 411 and the relatively stationary safety rope 5 generate sliding friction. The safety rope 5 will drive the pulley 411 to rotate. When the safety rope 5 descends too fast, the rotation speed of the pulley 411 will exceed the set value, triggering the action of the linkage assembly.

[0069] like Figure 4 , Figure 6 and Figure 7 As shown, in a further preferred embodiment, one of the two pulleys 411 is located Figure 6 The main function of the pulley 411 on the left side is to guide and limit the safety rope 5. On the one hand, the safety rope 5 is wrapped around the two pulleys 411 so that it is less likely to fall out. On the other hand, during the descent, the pulley 411 on the left side rotates clockwise due to the friction of the safety rope 5. After the pulley 411 on the left side is bent, the safety rope 5 rubs against the pulley 411 on the right side, causing the pulley 411 on the right side to rotate counterclockwise. According to actual needs, an appropriate number of pulleys 411 can be set.

[0070] like Figure 7-Figure 10 As shown, in a preferred embodiment, the linkage assembly includes a swing arm 42 disposed on any pulley 411 and set to swing within a preset swing range, and a rotating frame 43 coaxially connected to the pulley 411 and set to rotate within a preset range. The rotating member 43 includes a connecting end 431, which is used to contact the swing arm 42 and rotate under the push of the swing arm 42.

[0071] like Figure 3 and Figure 4As shown, in a preferred embodiment, the contact end 432 on the right side of the rotating frame 43 is indirectly connected to the connecting rod unit 44 through a wire rope 61. The rotating frame 43 rotates coaxially with the pulley 411 on the right side, but the two are not linked and rotate relative to each other. When falling, the pulley 411 on the right side is driven to rotate counterclockwise. When overspeeding, the swing arm 42 pops out and rotates counterclockwise together with the rotating frame 43. At this time, the right side of the rotating frame 43 is in an upward lifting action, thereby pulling up the connecting rod unit 44. The end of the connecting rod unit 44 is connected to the slider 32 through the wire rope 62, and drives the slider 32 to move upward, thereby realizing the braking action.

[0072] like Figure 6 and Figure 7 As shown, in a preferred embodiment, the contact end 432 of the rotating frame 43 is connected with an elastic member 46. After the contact end 432 of the rotating frame 43 contacts the swing arm 42, it will rotate under the push of the swing arm 42. The rotating frame 43 is connected by the elastic member 46 to limit the swing amplitude of the movable part, and can return to its original position under the action of the elastic member 46 after the speed slows down, so as to avoid the brake member 3 from being mistakenly triggered to perform a braking operation during the normal lifting and moving process of the battery transport equipment.

[0073] like Figure 6 and Figure 8 As shown, in a preferred embodiment, a trigger groove 430 is provided on the rotating frame 43, and the anti-fall device further includes a trigger switch, wherein the rotating frame 43 is in the initial position so that the trigger switch extends out of the trigger groove 430, and the rotating frame 43 presses the trigger switch when swinging. The trigger groove 430 swings with the rotating frame 43, so that the trigger switch that was not compressed before will be compressed by other parts of the rotating frame, thereby generating a trigger signal, which is convenient for confirming that the braking operation is triggered.

[0074] like Fig. 9 and Fig.10 As shown, in a preferred embodiment, the entire swing arm 42 located at the top is connected to the pulley 411, and is hinged to the pulley 411 through the rotating shaft 420. That is, while the rotating shaft 420 drives the entire swing arm 42 to rotate along with the pulley 411, the swing arm 42 can also swing relative to the pulley 411 to trigger the rotating member 43. After the arrangement, the swing amplitude of the swing arm 42 increases as the rotation speed of the pulley 411 increases. When the pulley 411 is at normal speed, the swing arm 42 rotates with the pulley 411, and the swing amplitude of the swing arm 42 is small and still rotates together, so it will not swing out and will not trigger the connecting end 431 of the rotating member 43. When the pulley 411 is overspeeding, the swing arm 42 reaches the rotating member to drive the connecting end 431 of the rotating frame 43 to move together. In this way, the rotation of the rotating frame 43 can be triggered only in the overspeed state to achieve the position switching of the brake member.

[0075] like Fig. 9 and Fig.10 As shown, in a preferred embodiment, one end of the swing arm 42 located on the upper side near the edge of the pulley 411 is connected to the support seat 47 of the pulley 411 through an elastic member 45, and the end of the swing arm 42 connected to the elastic member 45 rotates relative to the rotating shaft 420, so the swing amplitude will increase as the rotation speed of the pulley assembly 41 increases. Since the active part of the swing arm 42 requires a certain swing amplitude, the swing amplitude of the active part is limited by the elastic member 45 to avoid uncontrolled swinging and interference with the lifting and lowering movement of the battery transport device. Among them, the swing arm 42 stretches the elastic member 45 when the swing amplitude increases, and the stretched elastic member 45 increases the elastic force, so the swing arm 42 is not easy to swing out directly, but swings under the restriction of the elastic member 45. By reasonably setting the elastic force of the elastic member 45, when the descending speed of the battery transport device 2 exceeds the preset speed range, the swing arm 42 just exceeds the preset swing range and abuts against the connecting end 431 of the rotating frame 43, thereby driving the rotating frame 43 to rotate so that the moving part of the brake member 3 moves to the braking position.

[0076] like Fig. 9 and Fig.10 As shown, in a preferred embodiment, the entire swing arm 42 located on the lower side is connected to the pulley 411, and is hinged to the pulley 411 through the rotating shaft 420. That is, while the rotating shaft 420 drives the entire swing arm 42 on the lower side to rotate along with the pulley 411, the lower swing arm 42 can also swing relative to the pulley 411 to trigger the rotating member 43. Among them, one end of the swing arm 42 located on the lower side is connected to one end of the swing arm 42 located on the upper side through a series of linkage mechanisms such as a connecting rod 48 and a rotating member 49. As a result, the two swing arms 42 act together under linkage, swing out at the same time or retract at the same time. As a result, the connecting ends 431 at different positions of the rotating frame 43 can be driven at the same time, and the rotating frame 43 can be driven to move more firmly.

[0077] The present invention drives the brake member to brake and release respectively under different speed conditions through a trigger mechanism. It will not interfere with the movement when the battery transport equipment is operating normally, and can brake in time when it falls to prevent the battery transport equipment from stalling and falling. When the descending speed of the battery transport equipment exceeds a preset range, it is automatically triggered and the braking operation is performed, so that the brake member switches from the release position to the braking position, and the battery transport equipment is prevented from stalling and falling by abutting against the column. The braking is timely and accurate; and the braking is achieved mechanically through the cooperation of the brake member and the trigger mechanism, which is more reliable and stable than the electrical control in the prior art.

[0078] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A fall prevention device for stopping a battery transfer device in a battery swap station from falling, wherein the battery transfer device is configured to be movable and removable to take batteries from a battery rack, and the battery rack comprises a column arranged along the lifting direction of the battery transfer device, characterized in that: The anti-fall device is installed on the battery transport equipment, and includes: a brake member, the brake member cooperates with the column and is configured to abut against the column in a braking position and release the column in a releasing position; The trigger mechanism includes a linkage assembly and a sensing assembly, wherein the sensing assembly includes a pulley assembly, the pulley assembly contacts a relatively stationary contact member and moves along the contact member when the battery transport device descends, the linkage assembly includes a swing arm arranged on any of the pulleys and set to swing within a preset swing range, a rotating frame coaxially connected to the pulley and set to rotate within a preset range, and the rotating frame is connected to the brake member. When the descending speed of the battery transport device exceeds a preset speed range, the swing arm exceeds the preset swing range and abuts against the rotating frame, thereby driving the rotating frame to rotate and switching the brake member to the braking position.

2. The anti-fall device according to claim 1, characterized in that: At least one moving part of the brake member moves when the lifting and lowering movement of the battery transport equipment exceeds the preset speed range, thereby driving the brake member to switch from the release position to the braking position; preferably, the linkage assembly is connected to the moving part of the brake member and is used to drive the moving part of the brake member to move.

3. The anti-fall device according to claim 1, characterized in that: The pulley assembly is connected to two pulleys on the side wall of the battery transporting device. The contact piece is a safety rope. After the safety rope is passed through between the two pulleys and wound around the corresponding pulleys, it is respectively connected to the positions at both ends of the lifting stroke of the battery transporting device.

4. The anti-fall device according to claim 1, characterized in that: One end of the swing arm close to the edge of the pulley is connected to the pulley through an elastic member, and the end of the swing arm connected to the elastic member increases the swing amplitude as the rotation speed of the pulley assembly increases; and / or, One end of the rotating frame is connected with an elastic member, and one end of the rotating frame is in contact with the swing arm and rotates under the push of the swing arm.

5. The anti-fall device according to claim 1, characterized in that: The rotating frame is provided with a trigger groove, and the anti-falling device further comprises a trigger switch, wherein the trigger switch is extended out of the trigger groove when the rotating frame is in an initial position, and the trigger switch is pressed when the rotating frame swings.

6. The anti-fall device according to claim 1, characterized in that: The linkage assembly includes a connecting rod unit, which is connected to the brake member. When the descending speed of the battery transport equipment exceeds a preset speed range, the sensing assembly drives the connecting rod unit to move, thereby driving the moving part of the brake member to move to the braking position.

7. The anti-fall device according to claim 6, characterized in that: The anti-fall device includes a trigger mechanism and multiple brakes, wherein the multiple brakes are arranged at the four ends of the battery transfer equipment and correspond to the columns one by one, the trigger mechanism is arranged on any side of the battery transfer equipment along its telescopic direction, the brakes arranged on the same side along the telescopic direction are connected by the connecting rod unit to achieve synchronous position switching of the brakes on the same side, and the brakes on different sides are connected to the connecting rod units on both sides by at least one shaft rod arranged through the bottom plate of the battery transfer equipment to achieve synchronous position switching of the brakes on different sides.

8. The anti-fall device according to any one of claims 1 to 7, characterized in that: The brake member includes a fixed block fixed on the battery transport device and a slider movably arranged in a slide groove of the fixed block, the slider is connected to the trigger mechanism, and the slider moves along the slide groove to realize the switching of the brake member between the release position and the braking position.

9. A battery transport system, comprising a battery rack, characterized in that: The battery transport system further comprises a fall prevention device as described in any one of claims 1 to 8; Preferably, the battery rack has a guiding mechanism along the vertical direction, and the guiding mechanism includes four guide columns arranged in one-to-one correspondence with the four ends of the battery transfer equipment. The battery transfer equipment is located between two columns of the battery racks, and the four guide columns and the columns reuse the four columns of the two columns of the battery racks close to the battery transfer equipment. The reused columns have guiding surfaces that cooperate with the battery transfer equipment.

10. A battery swap station or energy storage station, characterized in that: The battery swap station includes the battery transport system as claimed in claim 9.

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