Position adaptive battery swap vehicle for vehicle battery pack

Abstract

This invention discloses a position-adaptive battery swapping trolley for vehicle battery packs, comprising a pick-and-place device, a frame module, and a drive unit. The pick-and-place device has a support frame for placing the battery pack and a locking mechanism for locking or unlocking the battery pack. The frame module has an upper support, a lower support, and a main frame. The drive unit has a first drive mechanism, a second drive mechanism, and a third drive mechanism. The first drive mechanism drives the upper support to move along a first direction on the lower support, thereby synchronously moving the battery pack on the upper support along the first direction. The second drive mechanism drives the lower support to move along a second direction on the main frame, thereby moving the upper support on the lower support and the battery pack on the upper support along the second direction. The third drive mechanism drives the main frame to move upwards in a third direction, thereby moving the lower support, the upper support, and the battery pack on the upper support in a third direction. This invention enables automated battery pack replacement for new energy vehicles.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of new energy vehicles, and in particular to a position-adaptive battery pack changing trolley for a vehicle. BACKGROUND

[0002] The existing side-changing new energy vehicle has two independent battery packs arranged on the two sides of the vehicle. When changing the battery pack, the operator of the battery changing station manually adjusts and positions the trolley according to the actual position of the battery pack in the vehicle, unlocks the battery pack, and then removes the battery pack by using the battery grabbing device for replacement. This method has the problems of manual adjustment and operation of the battery pack replacement, replacement on both sides of the vehicle, complicated operation, and long battery replacement time.

[0003] The information disclosed in this BACKGROUND section is only for the purpose of increasing the understanding of the background of the present application and should not be taken as admitting that the information forms prior art that is already known to those of ordinary skill in the art. SUMMARY

[0004] The present application aims to provide a position-adaptive battery pack changing trolley for a vehicle, which can alleviate the problem of low battery pack replacement efficiency.

[0005] To achieve the above-mentioned purpose, the embodiments of the present application provide a position-adaptive battery pack changing trolley for a vehicle, which comprises a taking and placing device, a frame module, and a driving device. The taking and placing device has a support frame for placing a battery pack and a locking mechanism arranged on the support frame and used for locking or unlocking the battery pack. The frame module has an upper support, a lower support, and a main frame. The upper support is fixed below the support frame, the lower support is fixed below the upper support, and the support frame, the upper support, and the lower support are accommodated in the main frame. The driving device has a first driving mechanism for driving the upper support to move in a first direction on the lower support, a second driving mechanism for driving the lower support to move in a second direction on the main frame, and a third driving mechanism for driving the main frame to move in a third direction. Wherein, the first direction is the X-axis direction, the second direction is the Z-axis direction, and the third direction is the Y-axis direction.

[0006] In one or more embodiments of the present application, the first driving mechanism comprises a first sliding assembly connected between the upper support and the lower support. The first sliding assembly comprises a first sliding block fixed to the upper support and a first sliding rail fixed to the lower support and in sliding cooperation with the first sliding block. The first sliding rail extends in the first direction.

[0007] In one or more embodiments of the present application, the first driving mechanism further comprises a first driving member capable of stretching and contracting in the first direction, one part of the first driving member being connected to the lower support and the other part being connected to the upper support, the stretching and contracting of the first driving member in the first direction driving the first sliding block to slide along the first sliding rail in the first direction.

[0008] In one or more embodiments of the present application, the second driving mechanism comprises a second sliding assembly connecting between the lower support and the main frame, the second sliding assembly comprising a second sliding block fixed to the lower support and a second sliding rail fixed to the main frame and in sliding cooperation with the second sliding block, the second sliding rail extending along the second direction.

[0009] In one or more embodiments of the present application, the second driving mechanism further comprises a second driving member, one part of the second driving member being connected to the main frame and the other part being connected to the lower support, the stretching and contracting of the second driving member in the second direction driving the second sliding block to slide along the second sliding rail in the second direction.

[0010] In one or more embodiments of the present application, the third driving mechanism comprises a third sliding assembly, the third sliding assembly comprising a track arranged on both sides of the main frame along a third direction and a pulley in sliding cooperation with the track.

[0011] In one or more embodiments of the present application, the third driving mechanism further comprises a third driving member, the third driving member comprising a rack fixedly arranged along the third direction and a third servo motor arranged on the main frame and in meshing transmission with the rack, the third servo motor being in meshing transmission with the rack to drive the main frame to move on the track in the third direction.

[0012] In one or more embodiments of the present application, the locking mechanism comprises a locking assembly, the locking assembly comprising a mounting plate, a first servo motor arranged on the mounting plate, and a swing arm arranged at the rotating end of the first servo motor, the upper end of the swing arm being provided with a guide wheel, the upper end of the battery pack being provided with a locking block, the locking block being provided with a locking groove limiting the guide wheel in the Y-axis direction, the guide wheel being located in the locking groove when the swing arm is rotated to the vertical state, and the locking mechanism being locked with the battery pack; the guide wheel being away from the locking groove when the swing arm is rotated to the horizontal state, and the locking mechanism being unlocked with the battery pack.

[0013] In one or more embodiments of the present application, the locking mechanism further comprises a telescopic fork driving the locking assembly to move in the third direction, the mounting plate being fixed to the telescopic end of the telescopic fork.

[0014] In one or more embodiments of the present application, the support frame is provided with a positioning pin matched with the vehicle positioning.

[0015] In one or more embodiments of the present application, the support frame is further provided with an unlocking mechanism for driving the positioning pin away from the vehicle, the unlocking mechanism comprising support beams arranged on both sides of the support frame, driving members and guide rails arranged on each of the support beams, a push plate slidingly connected on the guide rails and driven by the driving members, and a push pin arranged at the front end of the push plate.

[0016] In one or more embodiments of the present application, both sides of the support frame are provided with a sliding channel for sliding the battery pack.

[0017] In one or more embodiments of the present application, the support frame is provided with a threaded hole, and the upper support is provided with a spherical hinge screwed with the threaded hole.

[0018] In one or more embodiments of the present application, the upper support is provided with an elastic support for supporting the support frame, the elastic support comprising a cylinder arranged on the upper support, a telescopic rod arranged in the cylinder, first and second limit members arranged at both ends of the telescopic rod and capable of abutting against both ends of the cylinder, and a third limit member arranged on the inner wall of the cylinder, and an elastic member arranged between the first limit member and the third limit member for resetting the telescopic rod.

[0019] Compared with the prior art, the position adaptive battery pack changing trolley for vehicle according to the embodiments of the present application has the following advantages:

[0020] The first driving mechanism drives the upper support to move on the lower support in the first direction, so as to drive the battery pack on the upper support to move in the first direction. The second driving mechanism drives the lower support to move on the main frame in the second direction, so as to drive the upper support on the lower support and the battery pack on the upper support to move in the second direction. The third driving mechanism drives the main frame to move in the third direction, so as to drive the lower support, the upper support and the battery pack on the upper support to move in the third direction, so as to drive the taking and placing device on the upper support to adjust in the X, Z and Y directions to take and place the battery pack, thereby realizing the automatic replacement of the battery pack of the new energy vehicle.

[0021] Under the support of the elastic member, the ball head is always in abutment with the four corners of the support frame, so as to support the support frame and achieve the angle fine adjustment of the support frame on the upper support (i.e. when the support frame is placed, if the support frame is inclined to one side, the elastic support on the inclined side will support the support frame to keep the support frame in a horizontal state as much as possible), and the adaptive compensation of the gap between the support frame and the upper support.

[0022] When the swing arm 23 is rotated to the vertical state under the driving of the first servo motor 22, the guide wheel 24 is located in the locking slot 1011, the locking mechanism is locked with the battery pack 10, at this time the telescopic forks 3 can pull the battery pack 10 to move along the Y axis direction; when the swing arm 23 is rotated to the horizontal state, the guide wheel 24 is away from the locking slot 1011, the locking mechanism is unlocked with the battery pack 10. In this way, the quick locking or unlocking of the support frame 1 and the battery pack 10 can be quickly realized without manual operation, automatic design, which greatly improves the efficiency of taking and placing the battery pack.

[0023] When positioning is required, the positioning pin 11 is inserted into the positioning hole of the vehicle along with the movement of the support frame 1, so as to realize the quick positioning connection of the battery swap trolley and the vehicle.

[0024] When it is required to unlock the battery pack 10 from the vehicle in order to take down the battery pack, the driving member drives the push plate 44 to move along the Y axis direction on the guide rail 43, so that the push pin 45 on the push plate 44 pushes the locking member (not shown in the figure) on the vehicle to unlock the quick locking with the battery pack 10. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is an exploded view of the position adaptive battery swap trolley for vehicle battery pack according to an embodiment of the application;

[0026] Figure 2 is a perspective structural schematic view of the position adaptive battery swap trolley for vehicle battery pack according to an embodiment of the application;

[0027] Figure 3 is a structural schematic view of the upper support and the lower support of the position adaptive battery swap trolley for vehicle battery pack according to an embodiment of the application;

[0028] Figure 4 is a structural schematic view of the support frame of the position adaptive battery swap trolley for vehicle battery pack according to an embodiment of the application;

[0029] Figure 5 is a structural schematic view of the support frame of the position adaptive battery swap trolley for vehicle battery pack according to an embodiment of the application from another angle;

[0030] Figure 6 is a structural schematic view of the support frame of the position adaptive battery swap trolley for vehicle battery pack according to an embodiment of the application from another angle;

[0031] Figure 7 is a cross-sectional structural schematic view of the spherical hinge and the elastic support member of the position adaptive battery swap trolley for vehicle battery pack according to an embodiment of the application;

[0032] Figure 8It is a schematic diagram of a position adaptive battery pack changing trolley for vehicle battery pack according to an embodiment of the application with a battery pack;

[0033] Figure 9 It is a schematic diagram of a position adaptive battery pack changing trolley for vehicle battery pack according to an embodiment of the application with a battery pack; Figure 8 An enlarged view of part A in the middle.

[0034] Main figure mark explanation:

[0035] 1, support frame; 11, positioning pin; 12, threaded hole; 13, slide; 2, locking assembly; 21, mounting plate; 22, first servo motor; 23, swing arm; 24, guide wheel; 3, telescopic fork; 31, upper fork; 32, middle fork; 33, lower fork; 34, second servo motor; 4, unlocking mechanism; 41, support beam; 42, drive machine; 43, guide rail; 44, push plate; 45, push pin; 5, upper support; 51, spherical hinge; 511, base; 512, ball head screw; 6, elastic support; 61, cylinder; 62, telescopic rod; 63, first limiting piece; 64, second limiting piece; 641, limiting convex ring; 65, third limiting piece; 66, elastic piece; 7, lower support; 71, first sliding assembly; 711, first sliding block; 712, first slide rail; 72, first driving piece; 8, main frame; 81, second sliding assembly; 811, second sliding block; 812, second slide rail; 82, second driving piece; 9, third driving mechanism; 91, track; 92, pulley; 93, rack; 94, third servo motor; 10, battery pack; 101, locking block; 1011, locking groove. DETAILED DESCRIPTION

[0036] The specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but it should be understood that the scope of protection of the present application is not limited by the specific embodiments.

[0037] Unless otherwise explicitly stated, throughout the specification and claims, the term "comprise" or variations such as "comprises" or "comprising" will be understood to imply the inclusion of a stated element or component but not the exclusion of any other element or component.

[0038] As described above, the existing battery pack of new energy vehicle needs to be manually replaced by the operator using a trolley, which is complicated and inefficient. The present application sets up multiple driving mechanisms to realize the movement adjustment of the taking and placing device for carrying the battery pack in X, Y and Z directions, thereby realizing the automatic replacement of the battery pack.

[0039] As Figures 1 to 8As shown, according to the preferred embodiment of the application, a position adaptive battery swap trolley for vehicle battery pack comprises a taking and placing device, a frame module and a driving device. The taking and placing device has a support frame 1 for placing the battery pack and a locking mechanism arranged on the support frame 1 and used for locking or unlocking the battery pack. The frame module has an upper support 5, a lower support 7 and a main frame 8, the upper support 5 is fixed below the support frame 1, the lower support 7 is connected below the upper support 5, and the support frame 1, the upper support 5 and the lower support 7 are accommodated in the main frame 8. The driving device comprises a first driving mechanism, a second driving mechanism and a third driving mechanism. The first driving mechanism drives the upper support 5 to move on the lower support 7 in a first direction, so as to drive the battery pack on the upper support 5 to move synchronously in the first direction. The second driving mechanism drives the lower support 7 to move on the main frame 8 in a second direction, so as to drive the upper support 5 on the lower support 7 and the battery pack on the upper support 5 to move in the second direction. The third driving mechanism drives the main frame 8 to move in a third direction, so as to drive the lower support 7, the upper support 5 and the battery pack on the upper support 5 to move in the third direction. The first direction is the X-axis direction, the second direction is the Z-axis direction, and the third direction is the Y-axis direction.

[0040] The position adaptive battery swap trolley for vehicle battery pack of the application drives the upper support 5 to move on the lower support 7 in the first direction by the first driving mechanism, so as to drive the support frame 1 on the upper support 5 and the battery pack on the support frame 1 to move synchronously in the first direction. The second driving mechanism drives the lower support 7 to move on the main frame 8 in the second direction, so as to drive the upper support 5 on the lower support 7, the support frame 1 on the upper support 5 and the battery pack on the support frame 1 to move in the second direction. The third driving mechanism drives the main frame 8 to move in the third direction, so as to drive the lower support 7, the upper support 5, the support frame 1 on the upper support 5 and the battery pack on the support frame 1 to move in the third direction, so as to drive the taking and placing device on the upper support 5 to adjust in the X, Z and Y directions to take and place the battery pack, thereby realizing the automatic replacement of the new energy vehicle battery pack.

[0041] Specifically, please refer to Figure 3In order to realize the movement of the support frame 1 along the X direction on the lower support frame 7 with the upper support frame 5, the driving device comprises a first driving mechanism arranged between the upper support frame 5 and the lower support frame 7, and the first driving mechanism comprises a first sliding assembly 71 fixedly connected between the upper support frame 5 and the lower support frame 7 and a first driving member 72. The first sliding assembly 71 comprises a first sliding block 711 fixed to the upper support frame 5 and a first sliding rail 712 fixed to the lower support frame 7 and in sliding cooperation with the first sliding block 711. The first sliding rail 712 extends along the X axis direction, and the first sliding block 711 can be limitedly moved along the X axis direction on the first sliding rail 712, so as to realize the translation of the upper support frame 5 relative to the lower support frame 7 along the X axis direction. In an embodiment, the tail of the first driving member 72 is connected to the lower support frame 7, and the end is connected to the upper support frame 5. The first driving member 72 is telescopic along the X axis direction, so that under the driving of the first driving member 72, the relative movement of the battery pack on the support frame 1 along the X direction on the lower support frame 7 with the upper support frame 5 is realized through the sliding cooperation of the first sliding block 711 and the first sliding rail 712. Preferably, the first driving member 72 can be an electric cylinder.

[0042] In an embodiment, four first driving assemblies are arranged at the corresponding four corners of the upper support frame 5 and the lower support frame 7, so that the upper support frame 5 can stably slide relative to the lower support frame 7.

[0043] As Figure 1 , Figure 2 and Figure 3 In order to realize the movement of the support frame 1 along the Z direction on the main frame 8 with the lower support frame 7 and the upper support frame 5, the driving device comprises a second driving mechanism arranged between the lower support frame 7 and the main frame 8, and the second driving mechanism comprises a second sliding assembly 81 connected between the lower support frame 7 and the main frame 8 and a second driving member 82. The second sliding assembly 81 comprises a second sliding block 811 fixed to the lower support frame 7 and a second sliding rail 812 fixed to the main frame 8 and in sliding cooperation with the second sliding block 811, and the second sliding rail 812 extends along the Z axis direction, and the first sliding block 811 can be limitedly moved along the Z axis direction on the first sliding rail 812, so as to realize the translation of the lower support frame 7 relative to the main frame 8 along the Z axis direction.

[0044] In an embodiment, the tail of the second driving member 82 is connected to the main frame 8, and the end is connected to the lower support frame 7. The second driving member 82 is telescopic along the Z axis direction, so that under the driving of the second driving member 82, the sliding of the second sliding block 811 on the second sliding rail 812 is driven, so as to realize the relative movement of the battery pack on the support frame 1 and the upper support frame 5 along the Z direction on the main frame 8 with the lower support frame 7. Preferably, the second driving member 72 can be an electric cylinder.

[0045] In an embodiment, four second driving assemblies are arranged at the four corners of the lower support 7 and the main support 8, so that the upper support 5 can smoothly slide along the Z direction relative to the lower support 7.

[0046] As shown in Figure 1 and Figure 2 , in order to realize the movement of the battery pack, the upper support 5 and the lower support 7 on the support frame 1 along the Y axis direction relative to the main frame 8, in an embodiment, the driving device comprises a third driving mechanism 9. The third driving mechanism 9 comprises a third sliding assembly and a third driving member. The third sliding assembly comprises two tracks 91 arranged along the Y axis direction on both sides of the main frame 8 and a pulley 92 in sliding cooperation with the two tracks 91. The third driving member comprises a rack 93 fixedly arranged on the bottom surface or other platform and a third servo motor 94 fixedly arranged on the main frame 8 and in meshing transmission with the rack 93.

[0047] In a specific embodiment, the rotating end of the third servo motor 94 is provided with a gear, and the rack 93 extends along the Y axis direction. The third servo motor 94 is in meshing transmission with the rack 93 and moves along the rack 93 in the Y axis direction. Since the third servo motor 94 is fixedly arranged on the main frame 8, the movement of the third servo motor 94 in the Y axis direction drives the main frame 8 to move along the Y axis direction on the track 91. The third servo motor 94 provides driving force for the main frame 8 to move along the Y axis direction on the track 91, so that the battery pack, the upper support 5 and the lower support 7 on the support frame 1 move along the Y axis direction relative to the main frame 8.

[0048] As shown in Figure 1 , Figures 4 to 7 , in order to realize the locking or unlocking of the battery pack in the position-adaptive vehicle battery pack battery swap trolley of the application, the battery swap trolley of the application provides a locking mechanism, which comprises a locking assembly 2. The locking assembly 2 comprises a mounting plate 21, a first servo motor 22 arranged on the mounting plate 21 and a swing arm 23 arranged at the rotating end of the first servo motor 22. The swing arm 23 is further provided with a guide wheel 24 at the end.

[0049] Please refer to Figure 7 and Figure 8 , in an embodiment, the front end of the battery pack 10 is provided with a locking block 101, and the locking block 101 is provided with a locking groove 1011 limiting the guide wheel 24 in the Y axis direction. Under the driving of the first servo motor 22, when the swing arm 23 is rotated to the vertical state, the guide wheel 24 is located in the locking groove 1011. At this time, the locking mechanism is locked with the battery pack 10, and at this time, the telescopic fork 3 can pull the battery pack 10 to move along the Y axis direction; when the swing arm 23 is rotated to the horizontal state, the guide wheel 24 is away from the locking groove 1011, and the locking mechanism is unlocked with the battery pack 10.

[0050] Please refer to Figure 5In order to realize the locking assembly 2 moving along the Y-axis direction to cooperate with the locking or unlocking of the battery pack, the locking mechanism further comprises a telescopic fork 3 for driving the locking assembly 2 to move along the Y-axis direction. The telescopic fork 3 is a single telescopic fork 3 commonly used in the market, which comprises an upper fork 31, a middle fork 32, a lower fork 33 and a second servo motor 34. The operation principle is that the second servo motor 34 drives the lower fork 33 to move, the lower fork 33 drives the middle fork 32 to move, and the middle fork 32 drives the upper fork 31 to move. The mounting plate 21 is fixed to the upper fork 31, and the movement of the locking assembly 2 along the Y-axis direction is driven by the telescopic cooperation of the upper fork 31, the middle fork 32 and the lower fork 33 along the Y-axis direction.

[0051] In order to realize the accurate positioning of the battery swap trolley and the vehicle, a positioning pin 11 cooperating with the vehicle positioning is arranged on the support frame 1, and an unlocking mechanism 4 for driving the positioning pin 11 away from the vehicle is arranged. Specifically, when positioning is needed, the positioning pin 11 is inserted into the positioning hole of the vehicle along with the movement of the support frame 1 along the Y-axis direction, so as to realize the positioning connection of the battery swap trolley and the vehicle.

[0052] In order to unlock the battery pack 10 from the vehicle to facilitate the removal of the battery pack, the position-adaptive vehicle battery pack battery swap trolley of the present application further comprises an unlocking mechanism 4. In an embodiment, the unlocking mechanism 4 comprises a support beam 41 arranged on both sides of the support frame 1, a driving member and a guide rail 43 arranged on each support beam 41, and a push plate 44 in sliding connection with the guide rail 43 and driven by the driving member, and a push pin 45 arranged on the push plate 44. When unlocking is needed, the driving member drives the push plate 44 to move along the Y-axis direction on the guide rail 43, so that the push pin 45 on the push plate 44 pushes the locking member (not shown in the figure) on the vehicle to quickly unlock the locking with the battery pack 10, so as to facilitate the removal of the battery pack 10. Preferably, the driving member can be an electric cylinder.

[0053] It should be understood that the above-mentioned unlocking mechanism 4 only needs to provide a pushing force in the Y direction, so as to complete the unlocking of the battery pack 10 on the vehicle, and therefore the structural details of the locking member on the vehicle will not be described in detail.

[0054] Please refer to Figure 4 and Figure 5 In a preferred embodiment, in order to facilitate the taking and placing of the battery pack 10, a slide 13 for the sliding of the battery pack is arranged on both sides of the support frame 1, so that the movement of the battery pack is more stable and convenient.

[0055] Please refer to Figure 6In order to realize the connection of the support frame 1 and the upper support 5, a threaded hole 12 is arranged in the middle of the support frame 1, and a spherical hinge 51 is arranged in the middle of the upper support 5 and is screwed with the threaded hole 12. Specifically, the spherical hinge 51 includes a base 511 fixed in the middle of the upper support 5 and a ball head screw rod 512 movably connected with the base 511, and the ball head screw rod 512 is screwed with the threaded hole 12 to realize the detachable connection of the upper support 5 and the support frame 1. It should be understood that the spherical hinge 51 involved in the present application is a conventional spherical hinge 51 used in the market, which will not be described here.

[0056] The support frame 1 and the upper support 5 are both square frames. In order to realize the angle fine adjustment of the support frame 1 on the upper support 5 (that is, when the support frame 1 is placed, if the support frame 1 is inclined to one side, the elastic support 6 on the inclined side will support the support frame 1 to make the support frame 1 keep the horizontal state as much as possible) and the adaptive compensation of the gap between the support frame 1 and the upper support 5, the elastic supports 6 for supporting the support frame 1 are arranged at the four corners of the upper support 5. The elastic support 6 includes a cylinder 61 arranged at the four corners of the upper support 5 and a telescopic rod 62 arranged in the cylinder 61. The two ends of the telescopic rod 62 are respectively provided with a first limiting piece 63 and a second limiting piece 64 capable of abutting with the two ends of the cylinder 61, so as to prevent the telescopic rod 62 from slipping out of the cylinder 61. In an embodiment, the first limiting piece 63 is a ball head fixed on the upper end of the telescopic rod 62, and the second limiting piece 64 is a circular tube threadedly connected with the telescopic rod 62, and a limiting convex ring 641 is arranged around the outer wall of the circular tube. Through the limiting action of the ball head and the convex ring, the telescopic rod 62 is movably arranged in the cylinder 61 and will not be separated from the cylinder 61.

[0057] In an embodiment, a third limiting piece 65 is arranged on the inner wall of the cylinder 61, which is a ring piece extending radially inward along the inner wall of the cylinder 61, and an elastic piece 66 for resetting the telescopic rod 62 is arranged between the ball head and the ring piece. In an embodiment, when the support frame 1 is placed on the upper support 5, the four corners of the support frame 1 are in contact with the four ball heads of the upper support 5 and press down the ball heads against the elastic force of the elastic piece 66, so that the ball head is always in abutment with the four corners of the support frame 1 under the support of the elastic piece 66, so as to realize the angle fine adjustment of the support frame 1 on the upper support 5 (that is, when the support frame 1 is placed, if the support frame 1 is inclined to one side, the elastic support 6 on the inclined side will support the support frame 1 to make the support frame 1 keep the horizontal state as much as possible), and the adaptive compensation of the gap between the support frame 1 and the upper support 5. Preferably, the elastic piece 66 is a compression spring.

[0058] Compared with the prior art, the position adaptive battery swap trolley for vehicle battery pack according to the embodiment of the present application has the following advantages:

[0059] The first driving mechanism drives the upper support 5 to move on the lower support 7 in the first direction, so as to drive the battery pack on the upper support 5 to move in the first direction. The second driving mechanism drives the lower support 7 to move on the main frame 8 in the second direction, so as to drive the upper support 5 on the lower support 7 and the battery pack on the upper support 5 to move in the second direction. The third driving mechanism drives the main frame 8 to move in the third direction, so as to drive the lower support 7, the upper support 5 and the battery pack on the upper support 5 to move in the third direction, so as to realize the adjustment in the X, Z and Y directions to take and place the battery pack, thereby realizing the automatic replacement of the battery pack of the new energy vehicle.

[0060] Under the driving of the first servo motor 22, when the swing arm 23 rotates to the vertical state, the guide wheel 24 is located in the lock slot 1011, the locking mechanism is locked with the battery pack 10, at this time, the telescopic fork 3 can pull the battery pack 10 to move in the Y axis direction; when the swing arm 23 rotates to the horizontal state, the guide wheel 24 is away from the lock slot 1011, the locking mechanism is unlocked with the battery pack 10. In this way, the quick locking or unlocking of the support frame 1 and the battery pack 10 can be realized quickly without manual operation, which is an automatic design, so that the taking and placing efficiency of the battery pack is greatly improved.

[0061] Under the support of the elastic member 66, the ball head is always in abutment with the four corners of the support frame 1, so as to realize the angle fine adjustment of the support frame 1 on the upper support 5 (i.e. when the support frame 1 is placed, if the support frame 1 is inclined to one side, the elastic support member 1 on the inclined side will support the support frame 1, so that the elastic support member 6 can keep the support frame 1 in the horizontal state as much as possible), and adaptive compensation for the gap between the support frame 1 and the upper support 5.

[0062] When positioning is needed, the positioning pin 11 moves with the support frame 1 to be inserted into the positioning hole of the vehicle, so as to realize the quick positioning connection of the battery replacement trolley and the vehicle.

[0063] When it is needed to unlock the battery pack 10 from the vehicle in order to take down the battery pack, the driving member drives the push plate 44 to move on the guide rail 43 in the Y axis direction, so that the push pin 45 on the push plate 44 pushes the locking member (not shown in the figure) on the vehicle to quickly unlock the locking with the battery pack 10.

[0064] The foregoing description of specific exemplary embodiments of the application has been presented for the purposes of illustration and description. It is not intended to be exhaustive or to limit the application to the precise forms disclosed, and obviously many modifications and variations are possible in light of the above teaching. It is intended that the scope of the application be limited not with this detailed description, but rather by the claims appended hereto.

Claims

1. A position-adaptive battery swap trolley for a vehicle battery pack, characterized by, The application relates to a battery pack taking and placing device. The device comprises a support frame for placing a battery pack, a locking mechanism arranged on the support frame and used for locking or unlocking the battery pack, a frame module comprising an upper support frame, a lower support frame and a main frame, the upper support frame being fixed below the support frame, the lower support frame being fixed below the upper support frame, and the support frame, the upper support frame and the lower support frame being accommodated in the main frame, a driving device comprising a first driving mechanism for driving the upper support frame to move in a first direction on the lower support frame, a second driving mechanism for driving the lower support frame to move in a second direction on the main frame, and a third driving mechanism for driving the main frame to move in a third direction. The first direction is the X-axis direction, the second direction is the Z-axis direction, and the third direction is the Y-axis direction. A threaded hole is arranged on the support frame, and a spherical hinge is arranged on the upper support frame and screwed with the threaded hole. An elastic support member for supporting the support frame is arranged on the upper support frame, the elastic support member comprising a cylinder arranged on the upper support frame, a telescopic rod arranged in the cylinder, first and second limit members arranged at two ends of the telescopic rod and capable of abutting against two ends of the cylinder, and a third limit member arranged on an inner wall of the cylinder, and an elastic member arranged between the first limit member and the third limit member and used for returning the telescopic rod. The first limit member is a spherical head fixed on the upper end of the telescopic rod. An elastic support member for supporting the support frame is arranged at each of four corners of the upper support frame. The locking mechanism comprises a locking assembly, the locking assembly comprising a mounting plate, a first servo motor arranged on the mounting plate, and a swing arm arranged at a rotating end of the first servo motor, an upper end of the swing arm being provided with a guide wheel, a locking block being arranged on the battery pack, the locking block being provided with a locking groove for limiting the guide wheel in the Y-axis direction, the guide wheel being located in the locking groove when the swing arm is rotated to a vertical state, and the locking mechanism being locked with the battery pack; and the guide wheel being away from the locking groove when the swing arm is rotated to a horizontal state, and the locking mechanism being unlocked with the battery pack. The first driving mechanism comprises a first sliding assembly connected between the upper support frame and the lower support frame, the first sliding assembly comprising a first sliding block fixed on the upper support frame and a first sliding rail fixed on the lower support frame and in sliding cooperation with the first sliding block, the first sliding rail extending in the first direction. The first driving mechanism further comprises a first driving member capable of extending and retracting in the first direction, one part of the first driving member being connected to the lower support frame and the other part being connected to the upper support frame, and the first driving member being driven to slide on the first sliding rail in the first direction through extension and retraction in the first direction.

2. The position-adaptive battery swap trolley for a vehicle battery pack according to claim 1, characterized in that, The second driving mechanism comprises a second sliding assembly connected between the lower support frame and the main frame, the second sliding assembly comprising a second sliding block fixed on the lower support frame and a second sliding rail fixed on the main frame and in sliding cooperation with the second sliding block, the second sliding rail extending in the second direction. 3.The position-adaptive battery swap trolley for vehicle battery pack according to claim 2, characterized in that, ​ 4.The position-adaptive battery swap trolley for vehicle battery pack of claim 1, wherein, ​ 5.The position-adaptive battery swap trolley for vehicle battery pack according to claim 4, characterized in that, The second driving mechanism further comprises a second driving member, one part of the second driving member is connected to the main frame, and the other part is connected to the lower support, and the second driving member is in telescopic movement in the second direction to drive the second sliding block to slide on the second sliding rail in the second direction. 6.The position-adaptive battery swap trolley for vehicle battery pack according to claim 1, wherein, The third driving mechanism comprises a third sliding assembly, the third sliding assembly comprises a rail arranged on both sides of the main frame and in the third direction and a pulley in sliding cooperation with the rail.

7. The position-adaptive battery swap trolley for a vehicle battery pack according to claim 6, characterized in that, The third driving mechanism further comprises a third driving member, the third driving member comprises a rack fixedly arranged in the third direction and a third servo motor arranged on the main frame and in meshing transmission with the rack, and the third servo motor is in meshing transmission with the rack to drive the main frame to move on the rail in the third direction. 8.The position-adaptive battery swap trolley for vehicle battery pack of claim 1, wherein, The locking mechanism further comprises a telescopic fork for driving the locking assembly to move in the third direction, and the mounting plate is fixed to the telescopic end of the telescopic fork. 9.The position-adaptive battery swap trolley for vehicle battery pack according to claim 8, characterized in that, The support frame is provided with a positioning pin matched with the vehicle positioning. 10.The position-adaptive battery swap trolley for vehicle battery pack according to claim 9, characterized in that, The support frame is further provided with an unlocking mechanism for driving the positioning pin to move away from the vehicle, the unlocking mechanism comprises a support beam arranged on both sides of the support frame and a driving member and a guide rail arranged on each support beam, the guide rail is slidably connected with a push plate driven by the driving member, and the front end of the push plate is provided with a push pin. 11.The position-adaptive battery swap trolley for vehicle battery pack according to claim 10, characterized in that, Both sides of the support frame are provided with a slide for sliding the battery pack.

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