A fall protection device, a battery transfer system, a battery swap station or an energy storage station

Abstract

The application discloses a kind of anti-falling device, battery transfer system, battery swap station or energy storage station.The anti-falling device includes: brake part, brake part is set to abut against stand when in a brake position, release stand when in a release position;Trigger mechanism, trigger mechanism is installed in battery transfer equipment, and trigger mechanism is set to make brake part be in release position when the lifting movement of battery transfer equipment is in preset speed range, and trigger brake part to switch to brake position when the lifting movement of battery transfer equipment exceeds preset speed range.The application automatically triggers and executes brake operation when the descending speed of battery transfer equipment exceeds preset range, makes brake part switch from release position to brake position, prevents the stall fall of battery transfer equipment by abutting against stand, and brakes timely and accurately;And by the cooperation of brake part and trigger mechanism, mechanical braking is realized, which is more reliable and stable compared with the electrical control in the prior art.

Description

[0001] This application is a divisional application of the Chinese invention patent application No. CN202011634203.8, filed on December 31, 2020, entitled "Anti-falling device, battery transfer system, battery swap station or energy storage station". TECHNICAL FIELD

[0002] The present application relates to an anti-falling device, a battery transfer system, a battery swap station or an energy storage station. BACKGROUND

[0003] At present, the battery swap station is widely used in the battery swap of new energy vehicles. A large number of battery packs are usually stored on the battery rack in the battery swap station, and the battery rack charges the battery packs while storing them. The battery transfer equipment is usually used to take out or put in the battery from or to the different heights of the battery rack.

[0004] The Chinese patent application No. CN211733721U discloses a battery transfer device, mainly including a main frame, a battery lifting mechanism, a guide mechanism and the like. 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 in the disclosure is that the battery transfer device is slow in taking and placing the power battery, and cannot quickly adjust to the position of taking and placing the power battery. Therefore, the main frame cannot be too high in the vertical direction, and the disclosure does not have a function design for preventing falling.

[0005] The Chinese patent application No. CN111908390A discloses a fully-protected loading platform and a stacking machine. When the loading assembly is at an abnormal running speed due to overspeed, steel wire rope fracture or falling of the loading platform, the safety clamp assembly is started to act to brake. However, the safety clamp assembly in the disclosure includes a safety clamp lever, a fixed pulley action spring, a connecting chain and a safety clamp, which has a large and complex structure.

[0006] The above-mentioned transfer equipment may lose speed during lifting and fall rapidly out of control. The existing limit device is only used for stroke control and cannot limit the falling of the transfer equipment. The use of sensors for speed detection needs to be powered on, and once the power is lost, the sensor cannot detect the loss of speed. At this time, the transfer equipment is most likely to fall, which leads to the damage of the transfer equipment and the failure of all battery racks associated with the transfer equipment to complete the taking and placing of the battery, seriously affecting the operation. SUMMARY

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

[0008] The present application solves the above technical problems by the following technical solutions:

[0009] A falling prevention device is used to stop the falling state of a battery transfer equipment in a battery swap station, the battery transfer equipment is arranged to vertically move up and down in a plurality of battery storage positions arranged in the vertical direction of a battery rack to take and place batteries, the battery rack comprises a column arranged in the lifting stroke direction of the battery transfer equipment, and the falling prevention device comprises:

[0010] A brake is mounted on the battery transfer equipment and cooperates with the column, and the brake is arranged to abut against the column in a braking position and release the column in a release position;

[0011] A trigger mechanism is mounted on the battery transfer equipment, and the trigger mechanism is arranged to cause the brake to be in the release position when the lifting movement of the battery transfer equipment is within a preset speed range, and to trigger the brake to switch to the braking position when the lifting movement of the battery transfer equipment exceeds the preset speed range.

[0012] The present application drives the brake to brake and release under different speeds by the trigger mechanism. When the battery transfer equipment is running normally, it does not interfere with the movement, and when it falls, it can brake in time to prevent the battery transfer equipment from stalling and falling. The present application automatically triggers and performs braking operation when the descending speed of the battery transfer equipment exceeds the preset range, causing the brake to switch from the release position to the braking position, and preventing the battery transfer equipment from stalling and falling by abutting against the column, and the brake is timely and accurate. By cooperating the brake and the trigger mechanism, the braking is realized in a mechanical way, which is more reliable and stable than the electrical control in the prior art.

[0013] Preferably, at least one moving part of the brake moves when the lifting movement of the battery transfer equipment exceeds the preset speed range, thereby causing the brake to switch from the release position to the braking position.

[0014] The moving part of the brake switches from the release position to the braking position by moving, realizing the falling prevention function of the battery transfer equipment in the stall state.

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

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

[0017] Preferably, the trigger mechanism further comprises a sensing assembly for sensing the lifting speed of the battery transfer device, and the linkage assembly cooperates with the sensing assembly and is used to produce displacement to drive the moving part of the brake to move when the lifting speed of the battery transfer device exceeds a preset speed range.

[0018] The sensing assembly is used to sense the change of speed, so as to timely drive the linkage assembly to act.

[0019] Preferably, the sensing assembly comprises a pulley assembly, the pulley assembly is in contact with a relatively static contact member and moves along the contact member when the battery transfer device descends, and the linkage assembly is connected with the pulley assembly.

[0020] The sensing assembly senses the change of descending speed through the rotation speed of the pulley assembly, that is, senses the change of speed in a mechanical motion mode, which is faster in response than other types of sensing forms, can operate in the case of power failure, and ensures the effectiveness of execution.

[0021] Preferably, the pulley assembly is connected with two pulleys on the side wall of the battery transfer device, and the contact member is a safety rope, which is arranged between the two pulleys, wound around the corresponding pulleys, and connected to the positions at both ends of the lifting stroke of the battery transfer device, respectively.

[0022] During the descending process of the battery transfer device, the pulley and the relatively static safety rope produce sliding friction. The safety rope drives the pulley to rotate, and in the case that the descending speed is too fast, the rotation speed of the pulley will exceed the set value, triggering the action of the linkage assembly.

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

[0024] When the descending speed of the battery transfer device exceeds the 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 moving the moving part of the brake to the brake position.

[0025] The active part of the swing arm needs to swing to trigger the rotating member, and other parts of the swing arm rotate with the pulley. The swing amplitude of the swing arm increases as the rotation speed of the pulley increases. At normal speed of the pulley, the swing arm rotates with the pulley, the swing amplitude of the swing arm is small and still rotates together, so it does not swing out and does not trigger the rotating member. In the case of overspeed of the pulley, the swing arm reaches the rotating member to drive the rotating frame to move. Thus, the rotating frame can be triggered to rotate only in the overspeed state to realize the position switching of the brake member.

[0026] Preferably, one end of the swing arm near the edge position of the pulley is connected to the pulley by 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 active part of the swing arm needs a certain swing amplitude, and the swing amplitude of the active part is limited by the form of the elastic member to avoid uncontrolled swinging and interference with the lifting movement of the battery transfer device.

[0028] Preferably, one end of the rotating frame is connected with an elastic member, and the 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 limits the swing amplitude of the active part in the form of an elastic member to avoid false triggering of the brake member to perform the brake operation during the normal lifting movement of the battery transfer device.

[0030] Preferably, a trigger groove is provided on the rotating frame, and the anti-falling device further comprises a trigger switch, wherein the rotating frame makes the trigger switch protrude from the trigger groove when it is in the initial position, and the rotating frame presses the trigger switch when it swings.

[0031] The trigger groove swings with the rotating frame, so that the originally uncompressed trigger switch is compressed by other parts of the rotating frame, thereby generating a trigger signal to facilitate confirmation of the triggered brake operation.

[0032] Preferably, the linkage assembly comprises a connecting rod unit, and the connecting rod unit is connected with the brake member, wherein when the descending speed of the battery transfer device exceeds the 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 brake position.

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

[0034] Preferably, the anti-falling device comprises 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 to the columns one by one, the trigger mechanism is arranged at any side of the battery transfer equipment along the telescopic direction, the brake members arranged at the same side along the telescopic direction are connected by the linkage units to realize synchronous switching of the positions of the brake members at the same side, and the brake members at different sides are connected by at least one shaft rod penetrating the bottom plate of the battery transfer equipment to realize synchronous switching of the positions of the brake members at different sides.

[0035] By linking the same trigger mechanism, the plurality of brake members can be ensured to brake at the same time, avoiding the vibration and inclination of the car caused by the asynchronous braking of the brake members, and the situation that the braking force is not enough, thereby improving the stability and effectiveness.

[0036] Preferably, the brake member comprises a fixed block fixed on the battery transfer equipment and a sliding block movably arranged in a sliding groove of the fixed block, the sliding block is connected with the trigger mechanism, and the sliding block moves in the sliding groove to realize switching of the brake member between the release position and the braking position.

[0037] The sliding block is easier to be triggered, and the switching of different states can be realized by limiting the movement track.

[0038] A battery transfer system comprising a battery rack, the battery transfer system further comprising the anti-falling device.

[0039] Preferably, the battery rack has a guide mechanism in the vertical direction, the guide mechanism comprises four guide columns arranged one by one corresponding to the four ends of the battery transfer equipment, the battery transfer equipment is located between the two rows of battery racks, the four guide columns and the columns reuse the four columns of the two rows of battery racks close to the battery transfer equipment, and the reused columns have guide surfaces matched with the battery transfer equipment.

[0040] The four guide columns reuse the columns of the battery racks, so that the battery transfer system can directly operate between the two opposite battery racks without additionally installing guide columns, thereby simplifying the overall structure, making the connection of the two more compact, improving the guide strength, reducing the cost, saving manpower and material resources in the installation process, and improving the operation efficiency of the whole system.

[0041] In addition, in the process of guiding the battery transfer equipment by the columns, since the height of the column is directly related to the height of the battery position of the battery rack, the problem of inaccurate height positioning caused by the incoordination between the height reference of the battery transfer equipment and the height reference of the battery position is avoided.

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

[0043] The positive progress effect of the present application is that the trigger mechanism drives the brake member to brake and release at different speeds, respectively. The battery transfer equipment is not disturbed during normal operation, and the brake can be timely performed during falling to prevent the stall falling of the battery transfer equipment. The present application automatically triggers and performs brake operation when the descending speed of the battery transfer equipment exceeds the preset range, so that the brake member is switched from the release position to the brake position, and the battery transfer equipment is prevented from stalling and falling by abutting against the stand column, and the brake is timely and accurate. The brake is realized by the cooperation of the brake member and the trigger mechanism in a mechanical manner, which is more reliable and stable than the electrical control in the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0044] Figure 1 The figure is a schematic diagram of the three-dimensional structure of the battery transfer system of the preferred embodiment of the present application.

[0045] Figure 2 The figure is a schematic diagram of the side structure of the battery transfer equipment of the preferred embodiment of the present application.

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

[0047] Figure 4 The figure is a schematic diagram of the structure of one side of the anti-falling device of the preferred embodiment of the present application.

[0048] Figure 5 The figure is a schematic diagram of the structure of the brake member of the preferred embodiment of the present application.

[0049] Figure 6 The figure is a schematic diagram of the three-dimensional structure of the trigger mechanism of the preferred embodiment of the present application.

[0050] Figure 7 The figure is another schematic diagram of the three-dimensional structure of the trigger mechanism of the preferred embodiment of the present application.

[0051] Figure 8 The figure is a schematic diagram of the top view structure of the trigger mechanism of the preferred embodiment of the present application.

[0052] Figure 9 The figure is a schematic diagram of the linkage assembly of the preferred embodiment of the present application when it is not triggered.

[0053] Figure 10 The figure is a schematic diagram of the linkage assembly of the preferred embodiment of the present application when it is triggered. DETAILED DESCRIPTION

[0054] The application will be further described by way of examples without limiting the application to the examples described.

[0055] As shown in Figures 1-10 , the application discloses a battery transfer system for a battery swap station or an energy storage station. As shown in Figure 1 , the battery transfer system of the embodiment comprises a battery rack 1, the battery rack 1 has a guide mechanism in the vertical direction, the guide mechanism comprises four guide columns corresponding to the four end portions of a battery transfer device 2, the battery transfer device 2 is located between two rows of battery racks 1, the battery transfer device 2 is arranged to be vertically lifted and moved along a plurality of battery storage positions arranged in the vertical direction of the battery rack 1 to take and place batteries, a stand column 11 arranged in the lifting stroke direction of the battery transfer device 2, the four guide columns and the stand column 11 are multiplexed with the four stand columns 11 of the two rows of battery racks 1 close to the battery transfer device 2.

[0056] In a further preferred embodiment, the multiplexed stand column 11 has a guide surface matched with the battery transfer device. The four guide columns multiplex the stand columns 11 of the battery racks 1, without the need to additionally install guide columns, so that the battery transfer system can directly operate between the two opposite battery racks, simplifying the overall structure, making the connection of the two more compact, and improving the guiding strength, reducing the cost, saving manpower and material resources in the installation process, and improving the operation efficiency of the whole system.

[0057] In addition, in the process of guiding the battery transfer device by the stand column, since the height of the stand column 11 is directly related to the height of the battery storage position of the battery rack 1, the problem of inaccurate height positioning caused by the non-uniformity of the height reference of the battery transfer device and the height reference of the battery storage position is avoided.

[0058] That is, the battery transfer device 2 maintains a fixed relative position with the battery rack 1 in the horizontal direction, reducing the positioning demand in the horizontal direction and being conducive to control.

[0059] As shown in Figures 1-3 , the application discloses a fall-preventing device for stopping the falling state of a battery transfer device 2 in a battery swap station. The fall-preventing device of the embodiment comprises a brake member 3, the brake member 3 is installed on the battery transfer device 2 and matched with the stand column 11, the brake member 3 is arranged to abut against the stand column 11 in a brake position and release the stand column 11 in a release position.

[0060] As shown in Figure 1As shown, the anti-falling device of the embodiment further comprises a triggering mechanism 4, which is installed on the battery transfer device 2 and is configured to make the brake 3 in the release position when the lifting movement of the battery transfer device 2 is within the preset speed range, and trigger the brake 3 to switch to the brake position when the lifting movement of the battery transfer device 2 exceeds the preset speed range. The brake and release of the brake 3 are respectively driven by the triggering mechanism 4 under different speeds. The normal operation of the battery transfer device 2 will not interfere with the movement, and the brake can be performed in time when falling to prevent the stall and fall of the battery transfer device 2. The brake operation of the embodiment is automatically triggered when the descending speed of the battery transfer device exceeds the preset range, and the brake is switched from the release position to the brake position, which prevents the stall and fall of the battery transfer device by abutting against the stand column 11, and the brake is timely and accurate. The brake is realized in a mechanical manner by the cooperation of the brake and the triggering mechanism, which is more reliable and stable than the electrical control in the prior art.

[0061] In a preferred embodiment, the triggering mechanism 4 comprises a linkage assembly connected with the moving part of the brake 3 and used to drive the moving part of the brake 3 to move. The linkage assembly is used to transmit motion and ensure that the moving part of the brake 3 can be driven in time, so that the brake 3 can act in time according to the speed change. The triggering mechanism 4 further comprises a sensing assembly for sensing the lifting speed of the battery transfer device 2, and the linkage assembly cooperates with the sensing assembly and is used to produce displacement to drive the moving part of the brake 3 to move when the lifting speed of the battery transfer device 2 exceeds the preset speed range. The sensing assembly is used to sense the speed change to drive the linkage assembly to act in time.

[0062] As shown in Figure 3 and Figure 4 In a preferred embodiment, the linkage assembly comprises a connecting rod unit 44 connected with the brake 3, wherein when the descending speed of the battery transfer 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 3 to move to the brake position. The connecting rod unit 44 is reliable in operation and can drive multiple brakes 3 to work at the same time. In other embodiments, the linkage assembly can also be various linkage mechanisms, such as steel wire ropes, gear and rack mechanical transmission mechanisms, etc.

[0063] As shown in Figure 3As shown, in a preferred embodiment, the anti-fall device includes a triggering mechanism 4 and multiple braking components 3. The multiple braking components 3 are disposed at the four ends of the battery transfer device 2 and correspond one-to-one with the uprights 11. The triggering mechanism 4 is disposed on any side of the battery transfer device 2 along its extension / retraction direction. Braking components 3 disposed on the same side along the extension / retraction direction are connected by a linkage unit 44 to achieve synchronous position switching of the braking components 3 on the same side. Braking components 3 on different sides are connected to the linkage units 44 on both sides by at least one shaft 45 penetrating the bottom plate of the battery transfer device 2 to achieve synchronous position switching of the braking components 3 on different sides. By linking with the same triggering mechanism 4, it can be ensured that multiple braking components 3 brake simultaneously, avoiding vibration and tilting of the car due to asynchronous braking of the braking components 3, as well as insufficient braking force, thus improving stability and effectiveness.

[0064] Although in the preferred embodiment, one triggering mechanism 4 drives multiple braking elements 3, in other embodiments, multiple triggering mechanisms 4 can be set to correspond to multiple braking elements 3 respectively. If the triggering mechanisms 4 are set properly, a certain degree of simultaneous triggering can also be guaranteed.

[0065] like Figure 5 As shown, in a preferred embodiment, the braking element 3 includes a fixed block 33 fixed to the battery transfer device 2 and a slider 32 movably disposed within a groove 31 of the fixed block 33. The slider 32 is connected to the triggering mechanism 4. The slider 32 moves along the groove 31 to switch the braking element 3 from the release position to the braking position. When the lifting and lowering movement of the battery transfer device 2 exceeds a preset speed range, the slider 32 moves upward. At this time, since the extension direction of the groove 31 gradually moves upward toward the column 11, the slider 32 gradually approaches and contacts the column 11 during the process of switching from the release position below the groove 31 to the braking position above the groove 31, thus achieving braking. The slider 32 is thus more easily triggered, and different states can be switched by limiting the extension direction of the groove 31.

[0066] In other embodiments, the slider 32 can be driven by other known mechanisms. For example, a linkage mechanism can move the slider 32, or a trigger mechanism 4 can rotate a cam to move the slider 32. In other embodiments, the slider 32 can also be a structure of various shapes, such as a shape with grooves or patterns on its surface.

[0067] like Figure 3 and Figure 4In a preferred embodiment, the sensing assembly includes a pulley assembly 41, which is in contact with the relatively static safety rope 5 and moves along the safety rope 5 when the battery transfer device 2 is descending. The sensing assembly senses the change in the descending speed through the rotation speed of the pulley assembly 41, i.e. senses the change in speed in a mechanical manner, which is fast in response compared to other types of sensing forms, can operate in the case of power failure, and ensures the effectiveness of the execution. In other embodiments, the sensing assembly can also be other mechanisms capable of sensing the stall in a mechanical state.

[0068] As shown in Figure 4 In a further preferred embodiment, the pulley assembly 41 is two pulleys 411 connected to the side wall of the battery transfer device 2, which are driven by the safety rope 5. The safety rope 5 is arranged to pass between the two pulleys 411 and is wound around the corresponding pulleys 411, and is connected to the positions at both ends of the lifting stroke of the battery transfer device 2, i.e. is fixed at both ends. During the descending process of the battery transfer device 2, the pulleys 411 and the relatively static safety rope 5 generate sliding friction. The safety rope 5 drives the pulleys 411 to rotate, and in the case of excessively fast descending speed, the rotation speed of the pulleys 411 exceeds the set value, triggering the action of the linkage assembly.

[0069] As shown in Figure 4 , Figure 6 and Figure 7 In a further preferred embodiment, of the two pulleys 411, the pulley 411 on the left side of Figure 6 plays a major role in guiding and limiting the safety rope 5, on the one hand, so that the safety rope 5 is more difficult to come off the two pulleys 411, and on the other hand, during the descending process, the left pulley 411 is rotated clockwise by the friction of the safety rope 5, and after being bent by the left pulley 411, the safety rope 5 is frictional to the right pulley 411, causing the right pulley 411 to rotate counterclockwise. According to actual needs, a suitable number of pulleys 411 can be provided.

[0070] As shown in Figures 7-10 In a preferred embodiment, the linkage assembly includes a swing arm 42 arranged on any one of the pulleys 411 and set to swing within a preset swing range, and a rotating frame 43 coaxially connected with the pulley 411 and set to rotate within a preset range. The rotating frame 43 includes a connecting end 431 for contacting the swing arm 42 and rotating under the push of the swing arm 42.

[0071] As shown in 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 linkage unit 44 via a steel wire rope 61. The rotating frame 43 and the pulley 411 on the right side rotate coaxially, but are not linked; they rotate independently. During descent, 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 lifted, thereby pulling up the linkage unit 44. The end of the linkage unit 44 is connected to the slider 32 via the steel wire rope 62, causing the slider 32 to move upward, thus achieving a 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 to an elastic element 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, connected by the elastic element 46, limits the swing amplitude of its moving parts. After the speed decreases, it can return to its original position under the action of the elastic element 46, preventing accidental triggering of the braking element 3 to perform braking operations during the normal lifting and lowering movement of the battery transfer equipment.

[0073] like Figure 6 and Figure 8 As shown, in a preferred embodiment, the rotating frame 43 is provided with a trigger groove 430, and the fall arrestor also includes a trigger switch. When the rotating frame 43 is in its initial position, the trigger switch extends out of the trigger groove 430. When the rotating frame 43 swings, it presses against the trigger switch. As the rotating frame 43 swings, the trigger groove 430, which was previously uncompressed, is compressed by other parts of the rotating frame, thereby generating a trigger signal to confirm that the braking operation has been triggered.

[0074] like Figure 9 and Figure 10 As shown, in a preferred embodiment, the upper swing arm 42 is connected to the pulley 411 and hinged to it via a pivot 420. That is, while the pivot 420 drives the swing arm 42 to rotate along with the pulley 411, the swing arm 42 also swings relative to the pulley 411, thereby triggering the rotating component 43. With this configuration, the swing amplitude of the swing arm 42 increases with the rotational speed of the pulley 411. At the normal speed of the pulley 411, the swing arm 42 rotates together with the pulley 411, and the swing amplitude of the swing arm 42 is small and it still rotates together, so it will not swing out and will not trigger the connecting end 431 of the rotating component 43. When the pulley 411 is overspeeding, the swing arm 42 reaches the rotating component and drives the connecting end 431 of the rotating frame 43 to move together. Therefore, the rotating frame 43 can be triggered to rotate only in the overspeed state, thereby achieving the position switching of the braking component.

[0075] As Figure 9 and Figure 10 In a preferred embodiment, as shown in the drawings, the upper end of the swing arm 42 near the edge of the pulley 411 is connected to the support seat 47 of the pulley 411 by the elastic member 45. The end of the swing arm 42 connected to the elastic member 45 rotates relative to the rotating shaft 420, so that the swing arm 42 increases the swing amplitude as the rotating speed of the pulley assembly 41 increases. Since the moving part of the swing arm 42 needs a certain swing amplitude, the swing amplitude of the moving part is limited by the form of the elastic member 45 to avoid uncontrolled swing and interference with the lifting movement of the battery transfer device. In this case, the swing arm 42 lengthens the elastic member 45 when the swing amplitude increases, and the increased elastic force of the elastic member 45 makes it difficult for the swing arm 42 to swing directly out, but instead it 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 transfer 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 and moving the moving part of the brake member 3 to the braking position.

[0076] As Figure 9 and Figure 10 In a preferred embodiment, as shown in the drawings, the entire lower swing arm 42 is connected to the pulley 411 and is hinged to the pulley 411 by the rotating shaft 420. That is, the rotating shaft 420 drives the entire lower swing arm 42 to rotate with the pulley 411, and at the same time, the lower swing arm 42 can swing relative to the pulley 411 to trigger the rotating member 43. In this case, one end of the lower swing arm 42 is connected to one end of the upper swing arm 42 through a series of linkage mechanisms such as the connecting rod 48 and the rotating member 49. Thus, the two swing arms 42 move together in linkage, and swing out or retract at the same time. Thus, different connecting ends 431 of the rotating frame 43 can be driven at the same time, and the rotating frame 43 can be moved more firmly.

[0077] The trigger mechanism of the present application drives the brake member to brake and release at different speeds. When the battery transfer device is running normally, it does not interfere with the movement, but when it falls, it can brake in time to prevent the battery transfer device from stalling and falling. When the descending speed of the battery transfer device exceeds the preset range, the brake operation is automatically triggered and executed, the brake member is switched from the release position to the braking position, and the battery transfer device is prevented from stalling and falling by abutting against the stand, so the braking is timely and accurate. The cooperation of the brake member and the trigger mechanism realizes mechanical braking, which is more reliable and stable than the electrical control in the prior art.

[0078] Although the specific embodiments of the present application have been described above, it is understood by those skilled in the art that the present application is only illustrated by way of example, and the scope of protection of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to the embodiments without departing from the principles and essence of the present application, and such changes and modifications fall within the scope of protection of the present application.

Claims

1. A fall arrestor for preventing the falling of battery transfer equipment within a battery swapping station, the battery transfer equipment being configured to be vertically movable to retrieve and place batteries from a battery rack, the battery rack comprising columns arranged along the vertical direction of the battery transfer equipment, characterized in that... The fall arrestor is installed on the battery transfer equipment and includes: A braking element that engages with the column and is configured to abut against the column in a braking position and release the column in a release position; The triggering mechanism includes a linkage component and a sensing component. The sensing component includes a pulley assembly that contacts a relatively stationary contact member and moves along the contact member when the battery transfer device descends. The linkage component includes a swing arm mounted on either of the pulleys and set to swing within a preset swing range, and a rotating frame coaxially connected to the pulleys and set to rotate within the preset range. The linkage component also includes a linkage unit, the rotating frame being connected to the linkage unit, and the linkage unit being connected to the braking component. When the descent speed of the battery transfer device exceeds the preset speed range, the swing arm goes beyond the preset swing range and comes into contact with the rotating frame, thereby driving the rotating frame to rotate and driving the linkage unit to move so that the brake is switched to the braking position.

2. The fall arrestor as described in claim 1, characterized in that, At least one moving part of the brake component moves when the lifting and lowering movement of the battery transfer device exceeds the preset speed range, thereby causing the brake component to switch from the release position to the braking position.

3. The fall arrestor as described in claim 2, characterized in that, The linkage component is connected to the moving part of the brake and is used to drive the moving part of the brake to move.

4. The fall arrestor as described in claim 1, characterized in that, The pulley assembly is connected to two pulleys on the side wall of the battery transfer device. The contact element is a safety rope. The safety rope passes through the two pulleys, wraps around the corresponding pulleys, and is connected to the two ends of the lifting stroke of the battery transfer device.

5. The fall arrestor as described in claim 1, characterized in that, One end of the swing arm near the edge of the pulley is connected to the pulley via an elastic element, and the swing amplitude of the end of the swing arm connected to the elastic element increases as the rotational speed of the pulley assembly increases; and / or, One end of the rotating frame is connected to an elastic element, and the other end of the rotating frame contacts the swing arm and rotates under the push of the swing arm.

6. The fall arrestor as described in claim 1, characterized in that, The rotating frame is provided with a trigger groove, and the fall protection device also includes a trigger switch. When the rotating frame is in the initial position, the trigger switch extends out of the trigger groove, and when the rotating frame swings, it presses against the trigger switch.

7. The fall arrestor as described in claim 1, characterized in that, The fall arrestor includes a triggering mechanism and multiple braking components. The multiple braking components are disposed at the four ends of the battery transfer equipment and correspond one-to-one with the uprights. The triggering mechanism is disposed on any side of the battery transfer equipment along its extension and retraction direction. The braking components disposed on the same side along the extension and retraction direction are connected by the linkage unit to achieve synchronous switching of the positions of the braking components on the same side. The braking components on different sides are connected to the linkage units on both sides by at least one shaft disposed through the bottom plate of the battery transfer equipment to achieve synchronous switching of the positions of the braking components on different sides.

8. The fall arrestor as described in any one of claims 1-7, characterized in that, The braking component includes a fixed block fixed on the battery transfer device and a slider movably disposed in a groove of the fixed block. The slider is connected to the triggering mechanism, and the slider moves along the groove to switch the braking component between the release position and the braking position.

9. A battery transfer system, comprising a battery rack, characterized in that, The battery transfer system further includes a fall protection device as described in any one of claims 1-8.

10. The battery transfer system as described in claim 9, characterized in that, The battery rack has a vertical guiding mechanism, which includes four guide posts that correspond one-to-one with the four ends of the battery transfer device. The battery transfer device is located between two rows of battery racks. The four guide posts and the uprights reuse four uprights of the two rows of battery racks that are close to the battery transfer device. The reused uprights have guide surfaces that cooperate with the battery transfer device.

11. A battery swapping station or energy storage station, characterized in that, The battery swapping station includes the battery transfer system as described in claim 9.

Images