Battery transfer equipment and battery replacement station

Abstract

The utility model discloses battery transfer equipment and a battery swap station, the battery transfer equipment comprises a bearing frame and a transfer arm arranged on the bearing frame, the transfer arm is used for stretching and retracting relative to the bearing frame to transfer a battery pack, and the battery transfer equipment further comprises a lifting device arranged on the bearing frame, the lifting device comprises a driving mechanism, a transmission mechanism and a bearing disc, the transmission mechanism is connected with the output end of the driving mechanism and the bearing disc, and the driving mechanism drives the bearing disc to move in the vertical direction through the transmission mechanism. And the battery pack is separated from or in contact with the transfer arm through the bearing tray. According to the lifting device, the conveying stroke of the transfer arm can be increased, the applicability of the transfer arm to battery packs with different conveying stroke requirements is achieved, and the battery replacing requirements of battery replacing vehicles with different battery pack sizes are met.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of battery pack replacement equipment, and particularly relates to a battery transfer device and a battery swap station. BACKGROUND

[0002] In the process of quick battery replacement of an electric vehicle, a battery pack to be charged needs to be taken off and placed on a charging rack, and a fully charged battery pack needs to be replaced on the electric vehicle. At this time, a battery transfer device is needed to place the battery pack to be charged taken off by the battery replacement mobile platform into the charging rack, and to take the replacement battery pack off the charging rack and place it on the battery replacement mobile platform. When transferring the battery pack, the battery transfer device needs to take and place the battery pack through a transfer arm, and the working stroke of the transfer arm determines the transfer distance of the battery pack. Early battery swap stations were designed for battery packs with low capacity and small size, and the transfer path of the battery pack was relatively short. With the progress of battery pack manufacturing and the demand for new energy vehicle range, the size of the battery pack is getting larger and larger, and more and more battery packs need to be replaced and charged. The width of the charging rack is also getting wider, and the transfer arm needs to provide a larger transfer stroke to take and place the battery pack, which makes the battery transfer device unable to meet the transfer stroke requirement of the battery pack, thereby making the battery swap station unable to meet the battery replacement demand of the battery replacement vehicle with large capacity battery pack. CONTENT OF THE UTILITY MODEL

[0003] The application provides a battery transfer device and a battery swap station to solve the technical problem of difficulty in battery replacement caused by insufficient battery pack transfer stroke of the traditional battery transfer device.

[0004] The technical scheme adopted by the application is as follows:

[0005] A battery transfer device, comprising a supporting frame and a transfer arm arranged on the supporting frame, the transfer arm being used to extend and retract relative to the supporting frame to transfer a battery pack, and further comprising a lifting device arranged on the supporting frame, the lifting device comprising a driving mechanism, a transmission mechanism and a supporting tray, the transmission mechanism being connected with the output end of the driving mechanism and the supporting tray respectively, and the driving mechanism driving the supporting tray to move along the vertical direction through the transmission mechanism, so that the supporting tray separates or contacts the battery pack and the transfer arm.

[0006] The battery transfer equipment of the present application is provided with a lifting device. During the transfer process of the battery pack, when the stroke of the transfer arm is not enough to send the battery pack to the preset position, the transfer arm can first transport the battery pack for a partial stroke. When the transfer arm reaches the maximum stroke and cannot continue to transport the battery pack, the driving mechanism drives the supporting tray to move upward along the vertical direction through the transmission mechanism. The supporting tray is continuously raised and the battery pack is lifted to separate the battery pack from the transfer arm. At this time, the transfer arm is retracted, and the driving mechanism drives the supporting tray to move downward along the vertical direction through the transmission mechanism until the supporting tray is lower than the transfer arm, and the battery pack falls on the transfer arm. In this way, the transfer arm has a certain conveying stroke to transfer the battery pack. That is, the lifting device of the present application can increase the conveying stroke of the transfer arm, realize the applicability of the transfer arm to battery packs with different conveying stroke requirements, and meet the battery replacement needs of battery replacement vehicles with different battery pack sizes.

[0007] The battery transfer equipment described in the present application further comprises the following additional technical features:

[0008] One of the transmission mechanism and the supporting tray is provided with a movable slot, and the other is provided with a movable piece located in the movable slot. The driving mechanism can drive the movable piece to move along the movable slot to drive the supporting tray to move vertically.

[0009] The position of the movable piece in the movable slot determines the vertical position of the supporting tray. The driving mechanism can control the position of the movable piece to realize the accuracy of the position control of the supporting tray, which helps to improve the driving real-time performance and accuracy of the driving mechanism driving the movement of the supporting tray.

[0010] The transmission mechanism comprises a transmission disc, the transmission disc is provided with a transmission block, one of the transmission block and the supporting tray is provided with a first movable slot extending obliquely, and the other is provided with a first movable piece located in the first movable slot. The driving mechanism drives the transmission disc to rotate to drive the first movable piece to move along the first movable slot and drive the supporting tray to move vertically.

[0011] In this way, the driving mechanism only needs to drive the transmission disc to rotate to drive the transmission block and the supporting tray to rotate relatively, thereby realizing the movement of the first movable piece in the first movable slot. Since the first movable slot extends obliquely, as the first movable piece moves along the first movable slot, the supporting tray will be continuously lifted or lowered to realize the displacement along the vertical direction. In addition, the transmission mechanism is arranged as a transmission disc, so that it does not occupy the transverse space outside the transmission disc when driving the supporting tray to move up and down, which helps to reduce the space occupied by the transmission mechanism when working, thereby helping to miniaturize the battery transfer equipment.

[0012] The bottom of the supporting tray is provided with a mounting lug plate, the first movable piece is a first transmission wheel mounted on the mounting lug plate, and the first transmission wheel abuts against the top wall and the bottom wall of the first movable slot, respectively.

[0013] The mounting lug plate provides a mounting position for the first movable piece, avoiding the need to open a mounting hole on the supporting tray for mounting the first movable piece, and helping to ensure the structural integrity of the supporting tray. In addition, the first movable piece is a first transmission wheel, which rolls along the first movable slot, reducing the frictional resistance when the first movable piece moves in the first movable slot, thereby reducing the driving pressure of the driving mechanism when driving the first movable piece to move, so that the driving mechanism can more easily drive the first movable piece to move in the first movable slot, thereby more easily achieving the movement of the driving mechanism along the vertical direction. Furthermore, the first transmission wheel abuts against the top wall and the bottom wall of the first movable slot, respectively, which on the one hand increases the working stability of the first transmission wheel in the first movable slot, and the first movable slot limits the first transmission wheel to a certain extent, reducing the probability of the first transmission wheel falling out of the first movable slot, and helping to ensure the working stability of the transmission mechanism. On the other hand, such a configuration can ensure that the first transmission wheel stays at any position in the first movable slot, thereby achieving the control of the driving mechanism to stay at any position in the vertical direction.

[0014] The transmission block is also provided with a limiting slot in communication with the top end of the first movable slot, the limiting slot has a supporting surface extending in the horizontal direction, and the first transmission wheel can enter the limiting slot from the first movable slot.

[0015] The first limiting slot provides a parking position for the first transmission wheel moving to the top end of the first movable slot. When the first transmission wheel is located in the limiting slot, the supporting tray has moved to the top of its movement stroke, and the battery pack is supported on the supporting tray. The transfer arm is retracted, and during the waiting time for the transfer arm to retract, the first transmission wheel is relatively stable in the limiting slot and will not roll down along the inclined bottom surface of the first movable slot, greatly improving the load stability of the supporting tray.

[0016] The number of transmission blocks is multiple and is arranged in a circumferential direction of the transmission disc, and the number of first movable pieces is equal to the number of transmission blocks and is arranged in position with the multiple transmission blocks, respectively.

[0017] The number of the transmission blocks and the first movable pieces is multiple, so that the multiple first movable pieces cooperate with the transmission blocks to realize stable support of the supporting tray. When the battery pack is supported in the non-central area of the supporting tray, the multiple first movable pieces and the first movable slots can support the supporting tray in all directions, thereby greatly reducing the probability of overturning of the supporting tray under the eccentric force. The multiple transmission blocks and the first movable pieces are arranged in pairs, so that the driving mechanism drives the supporting tray to ascend or descend more smoothly, which helps to optimize the structural design of the battery transfer equipment.

[0018] The output shaft of the driving mechanism is provided with a first driving gear, and the side wall of the transmission disc is provided with a first driving rack. The driving mechanism drives the transmission disc to rotate through the meshing of the first driving gear and the first driving rack.

[0019] The driving mechanism adopts the first driving gear and the first driving rack to mesh with the transmission disc, which can realize high-precision motion transmission of the driving mechanism to the transmission disc and improve the control precision of the driving mechanism to the position of the transmission disc. In addition, during the lifting and lowering of the battery pack, the weight of the supporting tray and the battery pack is entirely borne by the driving mechanism, so that high requirements are put forward for the output power and stability of the driving mechanism. The gear meshing transmission can transmit large torque, so that the driving mechanism can bear large load and provide stability guarantee for the vertical movement of the supporting tray and the battery pack. Furthermore, by adjusting the number and size of the gears on the first driving gear and the first driving rack, the rotation speed of the transmission disc can be easily adjusted, so as to adjust the different motion speeds of the supporting tray, which helps to increase the motion flexibility of the supporting tray. Finally, the driving mechanism can drive the first driving gear to rotate in different directions to realize the lifting or lowering of the supporting tray, thereby driving the battery pack to ascend or descend, which helps to optimize the structural design of the battery transfer equipment.

[0020] One of the supporting frame and the supporting tray is provided with a vertically extending guide column, and the other is provided with a guide sleeve matched with the guide column. The guide column is arranged in the guide sleeve to guide the vertical movement of the supporting tray.

[0021] The guide column and the guide sleeve are arranged to provide a guide function for the movement of the supporting tray, so that the supporting tray can only ascend or descend in the vertical direction along the extension direction of the guide sleeve, thereby reducing the probability of movement deviation of the supporting tray and improving the stability of the supporting tray in lifting and lowering the battery pack.

[0022] The guide sleeve is a linear bearing arranged on the supporting frame, and the number of the guide sleeve and the guide column is multiple. The multiple guide sleeves and the guide columns are arranged at intervals on the bottom of the supporting tray.

[0023] The guide sleeve is arranged as a linear bearing, which can reduce the frictional resistance when the guide column and the guide sleeve move relative to each other, thereby reducing the driving pressure of the driving mechanism to drive the bearing tray to move; and the guide sleeve and the guide column are arranged in multiple numbers, which can increase the uniformity of the limiting of the bearing tray by the guide column and the guide sleeve, and further reduce the probability of movement deviation of the bearing tray.

[0024] The transmission mechanism comprises a transmission plate, one of the transmission plate and the bearing tray is provided with a second movable groove, and the other is provided with a second movable piece located in the second movable groove, the second movable groove extends in an inclined manner, and the driving mechanism drives the transmission plate to move in a horizontal direction to drive the second movable piece to move along the second movable groove, thereby driving the bearing tray to move in a vertical direction.

[0025] The movement of the transmission plate in the horizontal direction can realize the movement of the second movable piece along the second movable groove, and then drive the bearing tray to move in the vertical direction, so that the structure design of the transmission mechanism is relatively simple, which helps to reduce the processing and manufacturing difficulty of the transmission mechanism.

[0026] The transmission plate comprises a first mounting plate extending in a vertical direction, the second movable groove is opened in the first mounting plate, and the second movable piece is a second transmission wheel mounted on the bearing tray, and the second transmission wheel abuts against the top wall and the bottom wall of the second movable groove, respectively.

[0027] The first mounting plate provides an opening platform for the second movable groove, and the second movable piece is arranged as a second transmission wheel, which rolls along the second movable groove, thereby reducing the frictional resistance when the second movable piece moves in the second movable groove, and reducing the driving pressure of the driving mechanism to drive the second movable piece to move, so that the driving mechanism can easily drive the second movable piece to move in the second movable groove, thereby more easily realizing the movement of the driving mechanism to drive the bearing tray in the vertical direction; in addition, the second transmission wheel abuts against the top wall and the bottom wall of the second movable groove, respectively, which on the one hand increases the working stability of the second transmission wheel in the second movable groove, the first movable groove plays a certain limiting role on the second transmission wheel, thereby reducing the probability of the second transmission wheel coming out of the second movable groove, and helping to ensure the working stability of the transmission mechanism; on the other hand, such an arrangement can ensure that the second transmission wheel stays at any position in the second movable groove, thereby realizing the control of the driving mechanism to make the bearing tray stay at any vertical position.

[0028] The transmission plate comprises a second mounting plate extending in a vertical direction, the bearing tray is provided with a guide protrusion, the second movable groove is opened in the guide protrusion, and the second mounting plate is provided with a sliding rod matched with the second movable groove.

[0029] The second mounting plate and the guide protrusion provide installation platforms for the second movable slot and the sliding rod respectively, and the second movable slot in the guide protrusion cooperates with the sliding rod to realize the movement of the supporting tray in the vertical direction, and the relative movement path of the sliding rod and the second movable slot is fixed, which helps to improve the transmission stability of the driving mechanism to the supporting tray.

[0030] The output shaft of the driving mechanism is provided with a second driving gear, and the transmission plate is provided with a second driving rack extending in the horizontal direction. The driving mechanism drives the transmission plate to move in the horizontal direction through the meshing transmission of the second driving gear and the second driving rack.

[0031] The driving mechanism adopts the second driving gear and the second driving rack to mesh and transmit the transmission disc, which can realize high-precision movement transmission of the driving mechanism to the transmission disc through the transmission plate, and improve the control precision of the driving mechanism to the position of the transmission plate. In addition, by adjusting the number and size of the gears on the second driving gear and the second driving rack, the rotation speed of the transmission plate can be easily adjusted, thereby adjusting the different movement speeds of the supporting tray, which helps to increase the movement flexibility of the supporting tray. Furthermore, the driving mechanism can drive the second driving gear to rotate in different directions to realize the lifting or lowering of the supporting tray, thereby driving the battery pack to rise or fall, which helps to optimize the structural design of the battery transfer equipment.

[0032] A first guide sliding rail is arranged below the transmission plate, and the first guide sliding rail is provided with a first guide sliding groove extending in the horizontal direction. The transmission plate is provided with a first guide sliding block matched with the first guide sliding groove. The sliding cooperation between the first guide sliding block and the first guide sliding groove realizes the limiting of the movement direction of the transmission plate.

[0033] The first guide sliding rail and the first guide sliding groove provide a guiding effect for the movement of the transmission plate, so that the transmission plate moves along the extension direction of the first guide sliding rail, preventing the transmission plate from being deviated during movement, thereby improving the driving stability of the supporting tray.

[0034] A connecting part is arranged below the supporting tray. The connecting part is provided with a vertical guide rail, and the supporting bracket is provided with a vertical sliding groove matched with the vertical guide rail. The vertical guide rail and the vertical sliding groove cooperate to guide the vertical movement of the supporting tray. In addition, the connecting part is provided with a vertical limiting hole, and the supporting bracket is provided with a limiting roller located in the vertical limiting hole. The vertical limiting hole and the limiting roller cooperate to guide the vertical movement of the supporting tray.

[0035] The vertical guide rail and the vertical sliding groove are arranged to enable the supporting tray to move vertically along the extending direction of the vertical guide rail under the limiting action of the two, thereby preventing the supporting tray from moving out of position.

[0036] The transfer arm comprises a first transfer arm and a second transfer arm arranged at intervals, and the supporting tray is located between the first transfer arm and the second transfer arm.

[0037] The transfer arm is arranged as a first transfer arm and a second transfer arm, which can improve the stability of the supporting of the battery pack, and the supporting tray is located between the first transfer arm and the second transfer arm, so that the battery pack supported by the first transfer arm and the second transfer arm will be contacted and lifted by the supporting tray.

[0038] The driving mechanism is located between the first disc body and the second disc body, the transmission mechanisms are two and are symmetrically distributed on both sides of the driving mechanism, and the driving mechanism drives the first disc body and the second disc body to move synchronously through the two transmission mechanisms.

[0039] In this way, the synchronous driving of the first disc body and the second disc body can be realized by one driving mechanism, which helps to reduce the number of driving mechanisms and thus the production cost of the battery pack transfer equipment. In addition, the driving of the first disc body and the second disc body by the two transmission mechanisms through one driving mechanism helps to maintain the working synchronism of the output shaft of the driving mechanism, thereby improving the consistency of the vertical movement of the first disc body and the second disc body.

[0040] The application also provides a battery swap station comprising a charging rack for placing a battery pack and the battery transfer equipment as described above.

[0041] The battery swap station of the application has good adaptability to battery packs of different sizes and different transfer mileage requirements, and can better meet the battery swap needs of battery swap vehicles.

[0042] Thanks to the above technical solutions, the application has the following advantages:

[0043] The battery transfer equipment of the present application is provided with a lifting device. In the process of transferring the battery pack, when the stroke of the transfer arm is not enough to send the battery pack to the preset position, the transfer arm can first transport the battery pack for a partial stroke. When the transfer arm reaches the maximum stroke and cannot continue to transport the battery pack, the driving mechanism drives the supporting tray to move upward along the vertical direction through the transmission mechanism. The supporting tray continuously rises and supports the battery pack to rise, so that the battery pack is separated from the transfer arm. At this time, the transfer arm is retracted, and the driving mechanism drives the supporting tray to move downward along the vertical direction through the transmission mechanism until the supporting tray is lower than the transfer arm, and the battery pack falls on the transfer arm. In this way, the transfer arm has a certain conveying stroke to transfer the battery pack. That is, the lifting device of the present application can increase the conveying stroke of the transfer arm, realize the applicability of the transfer arm to battery packs with different conveying stroke requirements, and meet the battery replacement needs of battery replacement vehicles with different battery pack sizes. BRIEF DESCRIPTION OF DRAWINGS

[0044] The accompanying drawings, which are included to provide a further understanding of the present application, constitute a part of the present application and illustrate the illustrative embodiments of the present application and their description serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0045] Figure 1 It is a structural schematic view of the battery transfer equipment in the first embodiment of the present application.

[0046] Figure 2 It is a structural schematic view of part of the battery transfer equipment in the first embodiment of the present application.

[0047] Figure 3 It is a structural schematic view of the battery transfer equipment in the second embodiment of the present application.

[0048] Figure 4 It is an enlarged view of A part of Figure 3

[0049] Figure 5 It is an enlarged view of B part of Figure 3

[0050] Figure 6 It is a structural schematic view of the battery transfer equipment in the third embodiment of the present application.

[0051] Figure 7 It is a structural schematic view of part of the battery transfer equipment in the third embodiment of the present application.

[0052] Figure 8 It is an enlarged view of C part of Figure 7

[0053] Figure 9 It is a structural schematic view of the battery transfer equipment in the first embodiment of the present application.

[0054] Wherein:​​​

[0055] 1 driving mechanism, 11 first driving gear, 12 second driving gear;

[0056] 2 supporting tray, 21 first movable piece, 22 mounting lug plate, 23 guide post, 24 guide block, 25 connecting part, 251 vertical guide rail, 252 vertical limiting hole, 26 first disc body, 27 second disc body;

[0057] 3 transmission disc, 31 transmission block, 311 first movable groove, 312 limiting groove, 32 first driving rack;

[0058] 4 guide sleeve;

[0059] 5 transmission plate, 51 first mounting plate, 52 second mounting plate, 521 sliding rod, 53 second driving rack, 54 first guide slider;

[0060] 6 second movable groove;

[0061] 7 second movable piece;

[0062] 8 first guide slide rail, 81 first guide sliding groove;

[0063] 9 vertical sliding groove;

[0064] 10 limiting roller;

[0065] 110 supporting frame;

[0066] 120 transfer arm. DETAILED DESCRIPTION

[0067] In order to more clearly illustrate the overall concept of the present application, the following will be described in detail with reference to the accompanying drawings.

[0068] In the following description, a lot of specific details are set forth in order to facilitate a thorough understanding of the present application, however, the present application can also be implemented in other ways different from those described herein, therefore, the protection scope of the present application is not limited by the specific embodiments disclosed below. It should be noted that the embodiments of the present application and the features in each embodiment can be combined with each other without conflict.

[0069] In addition, in the description of the present application, it should be understood that the terms “top”, “bottom”, “inner”, “outer”, “axial”, “radial”, “circumferential” and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0070] In this application, unless otherwise clearly indicated and limited, the terms "mounting", "connection", "connecting", "fixed", and the like should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integral; can be mechanical connection, can also be electrical connection, and can also be communication; can be direct connection, can also be indirect connection through intermediate medium, can be internal communication of two elements or interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0071] In this application, unless otherwise clearly indicated and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. In the description of the specification, the description referring to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples.

[0072] Embodiment one:

[0073] As shown in Figure 1 , Figure 2 , Figure 9 A battery transfer device, comprising a support frame 110 and a transfer arm 120 arranged on the support frame 110, the transfer arm 120 being used to extend and retract relative to the support frame 110 to transfer a battery pack, and a lifting device arranged on the support frame 110, the lifting device comprising a driving mechanism 1, a transmission mechanism and a supporting tray 2, the transmission mechanism being connected with the output end of the driving mechanism 1 and the supporting tray 2 respectively, the driving mechanism 1 driving the supporting tray 2 to move along the vertical direction through the transmission mechanism, so as to separate or contact the battery pack and the transfer arm 120.

[0074] The battery transfer device of the present application is provided with a lifting device. During the transfer process of the battery pack, when the stroke of the transfer arm 120 is not enough to send the battery pack to the preset position, the transfer arm 120 can be used to transport the battery pack for a part of the stroke. The preset position can be a charging rack or a battery replacement device in the battery replacement station. The battery transfer device in the battery replacement station is generally used to transfer the battery between the two. When the transfer arm 120 reaches the maximum stroke and cannot continue to transport the battery pack, the driving mechanism 1 drives the supporting tray 2 to move upward along the vertical direction through the transmission mechanism. The supporting tray 2 continuously rises and supports the battery pack to rise, so that the battery pack is separated from the transfer arm 120. At this time, the transfer arm 120 is retracted, and the driving mechanism 1 drives the supporting tray 2 to move downward along the vertical direction through the transmission mechanism, until the supporting tray 2 is lower than the transfer arm 120, and the battery pack falls on the transfer arm 120. In this way, the transfer arm 120 has a certain conveying stroke to transfer the battery pack. That is, the lifting device of the present application can increase the conveying stroke of the transfer arm 120, realize the applicability of the transfer arm 120 to battery packs with different conveying stroke requirements, and meet the battery replacement needs of battery replacement vehicles with different battery pack sizes.

[0075] As a preferred embodiment under the present embodiment, one of the transmission mechanism and the supporting tray 2 is provided with a movable slot, and the other is provided with a movable piece located in the movable slot. The driving mechanism 1 can drive the movable piece to move along the movable slot to drive the supporting tray 2 to move vertically. The position of the movable piece in the movable slot determines the vertical position of the supporting tray 2. The driving mechanism 1 can control the position of the movable piece to realize the accuracy of the position control of the supporting tray 2, which helps to improve the driving real-time performance and accuracy of the driving mechanism 1 driving the supporting tray 2 to move.

[0076] As a preferred example under the present embodiment, as shown in Figure 1 、 Figure 2 The transmission mechanism includes a transmission disc 3, and the transmission disc 3 is provided with a transmission block 31. One of the transmission block 31 and the supporting tray 2 is provided with a first movable slot 311 extending obliquely, and the other is provided with a first movable piece 21 located in the first movable slot 311. The driving mechanism 1 drives the transmission disc 3 to rotate, so that the first movable piece 21 moves along the first movable slot 311 and drives the supporting tray 2 to move vertically.

[0077] In this way, the driving mechanism 1 only needs to drive the transmission disc 3 to rotate, so as to drive the transmission block 31 to rotate relative to the supporting disc 2, thereby realizing the movement of the first movable part 21 in the first movable groove 311. Since the first movable groove 311 extends in an inclined manner, with the movement of the first movable part 21 along the first movable groove 311, the supporting disc 2 is continuously lifted or lowered to realize the displacement in the vertical direction. Through the inclined first movable groove 311, compared with directly moving the first movable part 21 in the vertical direction, the requirement for the driving capacity of the driving mechanism 1 is reduced. In addition, the transmission mechanism is arranged as the transmission disc 3, so that it does not occupy the transverse space outside the transmission disc 3 when driving the supporting disc 2 to move up and down, which helps to reduce the space occupied by the transmission mechanism during operation, thereby helping to miniaturize the battery transfer equipment.

[0078] As a preferred mode in the present example, as shown in Figure 1 、 Figure 2 , the supporting disc 2 is provided with a mounting lug plate 22 at the bottom, the first movable part 21 is a first transmission wheel mounted on the mounting lug plate 22, and the first movable groove 311 is formed in the transmission block 31. The first transmission wheel abuts against the top wall and the bottom wall of the first movable groove 311, respectively.

[0079] The mounting lug plate 22 is arranged to provide a mounting position for the first movable part 21, avoiding the need to form a mounting hole for mounting the first movable part 21 on the supporting disc 2, which helps to ensure the structural integrity of the supporting disc 2. In addition, the first movable part 21 is arranged as a first transmission wheel, which rolls along the first movable groove 311, thereby reducing the frictional resistance when the first movable part 21 moves in the first movable groove 311, thereby reducing the driving pressure of the driving mechanism 1 when driving the first movable part 21 to move, so that the driving mechanism 1 can more easily drive the first movable part 21 to move in the first movable groove 311, thereby more easily realizing the movement of the driving mechanism 1 to drive the supporting disc 2 in the vertical direction. Furthermore, the first transmission wheel abuts against the top wall and the bottom wall of the first movable groove 311, which on the one hand increases the working stability of the first transmission wheel in the first movable groove 311, and the first movable groove 311 limits the first transmission wheel to a certain extent, thereby reducing the probability of the first transmission wheel coming out of the first movable groove 311, and helping to ensure the working stability of the transmission mechanism. On the other hand, such an arrangement can ensure that the first transmission wheel stays at any position in the first movable groove 311, thereby realizing the control of the driving mechanism 1 to keep the supporting disc 2 at any position in the vertical direction.

[0080] Specifically, a fixing hole is formed in the mounting lug plate 22, and a fixing shaft is arranged in the fixing hole. The first transmission wheel rotates around the fixing shaft.

[0081] Preferably, as shown in Figure 1 、 Figure 2As shown, the transmission block 31 is further provided with a limiting groove 312 in communication with the top end of the first movable groove 311, the limiting groove 312 has a supporting surface extending in the horizontal direction, and the first transmission wheel can enter the limiting groove 312 from the first movable groove 311.

[0082] The first limiting groove 312 provides a parking position for the first transmission wheel moving to the top end of the first movable groove 311, when the first transmission wheel is located in the limiting groove 312, it corresponds to the supporting tray 2 having moved to the topmost position of its movement stroke, at this time the battery pack is supported on the supporting tray 2. The transfer arm 120 performs the retraction operation, and during the waiting time for the retraction of the transfer arm 120, the first transmission wheel is relatively stable in the limiting groove 312 and will not roll down along the inclined bottom surface of the first movable groove 311, greatly improving the load stability of the supporting tray 2.

[0083] Further, when the first transmission wheel is located in the limiting groove 312, the first transmission wheel abuts against the top wall and the bottom wall of the limiting groove 312, respectively.

[0084] Further, as shown in Figure 1 , Figure 2 The number of transmission blocks 31 is multiple and is arranged in a circumferential direction of the transmission disc 3, and the number of first movable members 21 is equal to that of the transmission blocks 31 and is arranged in alignment with the multiple transmission blocks 31. The number of transmission blocks 31 and first movable members 21 is set to multiple, so that the multiple first movable members 21 and the transmission blocks 31 cooperate to realize stable support of the supporting tray 2, when the battery pack is supported in the non-central region of the supporting tray 2, which causes the supporting tray 2 to have a tendency to deflect to one side, the multiple first movable members 21 and the first movable groove 311 can support the supporting tray 2 in all directions, thereby greatly reducing the probability of overturning of the supporting tray 2 under the action of eccentric force; and the multiple transmission blocks 31 and first movable members 21 arranged in alignment make the process of driving the supporting tray 2 to rise or fall by the driving mechanism 1 more stable and smooth, which helps to optimize the structural design of the battery transfer equipment.

[0085] Preferably, the transmission block 31 is located close to the edge of the transmission disc 3, and the top of the transmission disc 3 has a limiting disc concentric with the transmission disc 3, and each transmission block 31 abuts against the limiting disc.

[0086] Preferably, as shown in Figure 1 , Figure 2As shown, the output shaft of the driving mechanism 1 is provided with a first driving gear 11, the side wall of the transmission disc 3 is provided with a first driving rack 32, and the driving mechanism 1 drives the transmission disc 3 to rotate through the meshing transmission of the first driving gear 11 and the first driving rack 32. The driving mechanism 1 drives the transmission disc 3 through the meshing transmission of the first driving gear 11 and the first driving rack 32, which can realize high-precision motion transmission of the driving mechanism 1 to the transmission disc 3 and improve the control precision of the driving mechanism 1 to the position of the transmission disc 3. In addition, during the lifting and lowering of the battery pack, the weight of the supporting tray 2 and the battery pack is entirely borne by the driving mechanism 1, so that high requirements are put forward for the output power and stability of the driving mechanism 1. The gear meshing transmission can transmit large torque, so that the driving mechanism 1 can bear large load and provide stability guarantee for the vertical movement of the supporting tray 2 and the battery pack. Furthermore, the number and size of the gears on the first driving gear 11 and the first driving rack 32 can be adjusted to easily adjust the rotating speed of the transmission disc 3, so as to adjust the different motion speeds of the supporting tray 2, which helps to increase the motion flexibility of the supporting tray 2. Finally, the driving mechanism 1 can drive the first driving gear 11 to rotate in different directions to realize the lifting or lowering of the supporting tray 2, so as to drive the battery pack to rise or fall, which helps to optimize the structural design of the battery transfer equipment.

[0087] As a preferred embodiment under the present embodiment, as shown in Figure 1 The supporting frame 110 and the supporting tray 2 are provided with a vertically extending guide column 23 and a guide sleeve 4 that is adapted to the guide column 23, respectively, and the guide column 23 is arranged in the guide sleeve 4 to guide the vertical movement of the supporting tray 2. The guide column 23 and the guide sleeve 4 provide a guiding effect for the movement of the supporting tray 2, so that the supporting tray 2 can only rise or fall in the vertical direction along the extension direction of the guide sleeve 4, which reduces the probability of movement deviation of the supporting tray 2 and helps to improve the stability of the lifting and lowering of the battery pack by the supporting tray 2.

[0088] Further, as shown in Figure 1 The guide sleeve 4 is a linear bearing installed on the supporting frame 110, and the guide sleeve 4 and the guide column 23 are provided in multiple numbers and are arranged at intervals at the bottom of the supporting tray 2. The guide sleeve 4 is arranged as a linear bearing, which can reduce the friction resistance when the guide column 23 moves relative to the guide sleeve 4, thereby reducing the driving pressure of the driving mechanism 1 to drive the supporting tray 2 to move. The guide sleeve 4 and the guide column 23 are provided in multiple numbers, which can increase the uniformity of the limiting of the guide column 23 and the guide sleeve 4 to the supporting tray 2 and further reduce the probability of movement deviation of the supporting tray 2.

[0089] The embodiment also provides a battery swap station, which comprises a charging rack for placing a battery pack and the battery transfer device as described above. The battery swap station in the embodiment has good adaptability to battery packs of different sizes and different transfer mileage requirements, and can better meet the battery swap requirements of the battery swap vehicle.

[0090] Embodiment two:

[0091] The embodiment differs from embodiment one in that:

[0092] As shown in Figures 3 to 5 , the transmission mechanism comprises a transmission plate 5, one of the transmission plate 5 and the supporting tray 2 is provided with a second movable groove 6, and the other is provided with a second movable piece 7 located in the second movable groove 6. The second movable groove 6 extends along the inclined direction. The driving mechanism 1 drives the transmission plate 5 to move along the horizontal direction to drive the second movable piece 7 to move along the second movable groove 6, thereby driving the supporting tray 2 to move along the vertical direction. The movement of the second movable piece 7 along the second movable groove 6 can be realized by the movement of the transmission plate 5 along the horizontal direction, and then the movement of the supporting tray 2 along the vertical direction is driven, so that the structure design of the transmission mechanism is relatively simple, which helps to reduce the processing and manufacturing difficulty of the transmission mechanism.

[0093] As a preferred embodiment under the embodiment, as shown in Figure 3 , the transmission plate 5 comprises a first mounting plate 51 extending vertically, and the second movable groove 6 is opened in the first mounting plate 51. The second movable piece 7 is a second transmission wheel mounted on the supporting tray 2, and the second transmission wheel respectively abuts against the top wall and the bottom wall of the second movable groove 6. The first mounting plate 51 provides an opening platform for the second movable groove 6, and the second movable piece 7 is set as a second transmission wheel, which rolls along the second movable groove 6, thereby reducing the friction resistance of the second movable piece 7 when moving in the second movable groove 6, and reducing the driving pressure of the driving mechanism 1 when driving the second movable piece 7 to move, so that the driving mechanism 1 can more easily drive the second movable piece 7 to move in the second movable groove 6, thereby more easily realizing the movement of the driving mechanism 1 along the vertical direction. In addition, the second transmission wheel respectively abuts against the top wall and the bottom wall of the second movable groove 6, which on the one hand increases the working stability of the second transmission wheel in the second movable groove 6, and the first movable groove 311 plays a certain limiting role on the second transmission wheel, thereby reducing the probability of the second transmission wheel coming out of the second movable groove 6, and helping to ensure the working stability of the transmission mechanism. On the other hand, such a setting can ensure that the second transmission wheel stays at any position in the second movable groove 6, thereby realizing the control of the driving mechanism 1 on the staying of the supporting tray 2 at any vertical position.

[0094] As a preferred example under the embodiment, as shown in Figure 3As shown, the output shaft of the driving mechanism 1 is provided with a second driving gear 12, the transmission plate 5 is provided with a second driving rack 53 extending in the horizontal direction, and the driving mechanism 1 drives the transmission plate 5 to move in the horizontal direction through the meshing transmission of the second driving gear 12 and the second driving rack 53. The driving mechanism 1 drives the transmission plate 3 through the meshing transmission of the second driving gear 12 and the second driving rack 53, which can realize high-precision motion transmission of the driving mechanism 1 to the transmission plate 3 and improve the control precision of the driving mechanism 1 to the position of the transmission plate 5. In addition, by adjusting the number and size of the gears on the second driving gear 12 and the second driving rack 53, the rotational speed of the transmission plate 5 can be easily adjusted, thereby adjusting the different motion speeds of the support plate 2, which helps to increase the motion flexibility of the support plate 2. Furthermore, the driving mechanism 1 can drive the second driving gear 12 to rotate in different directions to realize the lifting or lowering of the support plate 2, thereby driving the battery pack to rise or fall, which helps to optimize the structural design of the battery transfer equipment.

[0095] Preferably, as Figure 5 shown, the transmission plate 5 is provided below with a first guide rail 8, the first guide rail 8 is provided with a first guide slot 81 extending in the horizontal direction, and the transmission plate 5 is provided with a first guide block 54 matched with the first guide slot 81. The first guide block 54 and the first guide slot 81 are slidably matched to limit the movement direction of the transmission plate 5. The first guide rail 8 and the first guide slot 81 provide a guide function for the movement of the transmission plate 5, so that the transmission plate 5 moves along the extension direction of the first guide rail 8, preventing the transmission plate 5 from being deviated during movement, thereby improving the driving stability of the support plate 2.

[0096] Further, as Figure 4 shown, the support plate 2 is provided below with a connecting portion 25; the connecting portion 25 is provided with a vertical guide rail 251, and the support bracket 110 is provided with a vertical sliding slot 9 matched with the vertical guide rail 251. The vertical guide rail 251 and the vertical sliding slot 9 guide the vertical movement of the support plate 2. The vertical guide rail 251 and the vertical sliding slot 9 limit the vertical movement of the support plate 2 along the extension direction of the vertical guide rail 251, preventing the support plate 2 from being deviated during movement.

[0097] As a preferred embodiment of the present embodiment, as Figure 9 shown, the transfer arm 120 includes a first transfer arm and a second transfer arm arranged at intervals, and the support plate 2 is located between the first transfer arm and the second transfer arm. The support plate 2 includes a first disc body 26 adjacent to the first transfer arm and a second disc body 27 adjacent to the second transfer arm.

[0098] In this way, the transport arm 120 is arranged as a first transport arm and a second transport arm, which can improve the stability of the battery pack, and the support tray 2 is arranged between the first transport arm and the second transport arm, so that the battery pack supported by the first transport arm and the second transport arm is necessarily contacted and lifted by the support tray 2. On this basis, the arrangement of the first disc body 26 and the second disc body 27 also provides stability for the support of the battery pack by the support tray 2.

[0099] Preferably, as shown in Figure 3 The driving mechanism 1 is arranged between the first disc body 26 and the second disc body 27, and the transmission mechanism is arranged symmetrically on both sides of the driving mechanism 1, and the driving mechanism 1 drives the first disc body 26 and the second disc body 27 to move synchronously through the two transmission mechanisms. The synchronous driving of the first disc body 26 and the second disc body 27 by one driving mechanism 1 can help to reduce the number of driving mechanisms 1, thereby reducing the production cost of the battery pack transport device. In addition, the driving of the first disc body 26 and the second disc body 27 by one driving mechanism 1 through two transmission mechanisms can help to maintain the working synchronization of the output shaft of the driving mechanism 1, thereby improving the consistency of the vertical movement of the first disc body 26 and the second disc body 27.

[0100] The number and structure of the support tray 2 are not limited in this embodiment, and the support tray 2 can also be arranged as a plate-shaped structure above the driving mechanism 1.

[0101] Embodiment three:

[0102] The structure and principle of this embodiment are basically the same as those of example one, and the difference lies in that:

[0103] As shown in Figures 6 to 8 The transmission plate 5 includes a vertically extending second mounting plate 52, the support tray 2 is provided with a guide protrusion 24, the second movable slot 6 is arranged in the guide protrusion 24, and the second mounting plate 52 is provided with a sliding rod 521 matched with the second movable slot 6.

[0104] The second mounting plate 52 and the guide protrusion 24 provide a mounting platform for the second movable slot 6 and the sliding rod 521, respectively, and the second movable slot 6 arranged in the guide protrusion 24 cooperates with the sliding rod 521 to realize the vertical movement of the support tray 2. The relative movement path of the sliding rod 521 and the second movable slot 6 is fixed, which can help to improve the transmission stability of the driving mechanism 1 to the support tray 2.

[0105] As shown in Figure 6As shown, the connecting part 25 is provided with a vertical limiting hole 252, the support frame 110 is provided with a limiting roller 10 located in the vertical limiting hole 252, and the vertical guide rail 251 cooperates with the vertical sliding groove 9 to guide the vertical movement of the support tray 2.

[0106] The places not described in the application can be realized by using or referring to the existing technology.

[0107] Each of the embodiments in the specification is described in a progressive manner, and the same or similar parts between the embodiments can be referred to each other. Each embodiment mainly describes the differences from other embodiments.

[0108] The above is only an embodiment of the application and is not intended to limit the application. Those skilled in the art can make various changes and modifications to the application. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the application shall be included in the scope of the claims of the application.

Claims

1. A battery transfer apparatus, a cradle and a transfer arm provided on the cradle, the transfer arm being used to extend and retract relative to the cradle to transfer a battery pack, characterized in that, It also includes a lifting device provided on the support frame. The lifting device includes a drive mechanism, a transmission mechanism, and a support tray. The transmission mechanism is connected to the output end of the drive mechanism and the support tray respectively. The drive mechanism drives the support tray to move in the vertical direction through the transmission mechanism so that the support tray can separate or contact the battery pack with the transfer arm.

2. The battery transfer device according to claim 1, characterized in that, One of the transmission mechanism and the support tray is provided with a movable groove, and the other of the two is provided with a movable component located in the movable groove. The drive mechanism can drive the movable component to move along the movable groove to drive the support tray to move in the vertical direction.

3. The battery transfer device according to claim 2, characterized in that, The transmission mechanism includes a transmission disk with a transmission block on it. One of the transmission block and the support tray has a first movable groove extending obliquely, and the other has a first movable member located in the first movable groove. The driving mechanism drives the transmission disk to rotate so that the first movable member moves along the first movable groove and drives the support tray to move in the vertical direction.

4. The battery transfer device according to claim 3, characterized in that, The bottom of the support tray is provided with a mounting ear plate. The first movable component is a first transmission wheel installed on the mounting ear plate. The first movable groove is opened in the transmission block. The first transmission wheel abuts against the top wall and the bottom wall of the first movable groove respectively.

5. The battery transfer device according to claim 4, characterized in that, The transmission block is also provided with a limiting groove that communicates with the top of the first movable groove. The limiting groove has a supporting surface that extends in the horizontal direction, and the first transmission wheel can enter the limiting groove from the first movable groove.

6. The battery transfer device according to any one of claims 3 to 5, characterized in that, The number of transmission blocks is multiple and they are spaced apart circumferentially along the transmission disk. The number of the first movable parts is equal to the number of transmission blocks and they are respectively aligned with the multiple transmission blocks.

7. The battery transfer device according to any one of claims 3 to 5, characterized in that, The output shaft of the drive mechanism is provided with a first drive gear, and the side wall of the transmission disk is provided with a first drive rack. The drive mechanism drives the transmission disk to rotate through the meshing of the first drive gear and the first drive rack.

8. The battery transfer device according to claim 2, characterized in that, One of the support frame and the support tray is equipped with a vertically extending guide post, and the other is equipped with a guide sleeve adapted to the guide post. The guide post passes through the guide sleeve to guide the support tray to move in the vertical direction.

9. The battery transfer device according to claim 8, characterized in that, The guide sleeve is a linear bearing installed on the support frame. There are multiple guide sleeves and guide posts, which are spaced apart at the bottom of the support tray.

10. The battery transfer device according to claim 2, characterized in that, The transmission mechanism includes a transmission plate, one of which, the transmission plate and the support plate, is provided with a second movable groove, and the other of which is provided with a second movable member located in the second movable groove. The second movable groove extends obliquely, and the driving mechanism drives the transmission plate to move in the horizontal direction to drive the second movable member to move along the second movable groove, thereby driving the support plate to move in the vertical direction.

11. The battery transfer device according to claim 10, characterized in that, The transmission plate includes a vertically extending first mounting plate, a second movable slot formed in the first mounting plate, and a second movable component being a second transmission wheel mounted on the support tray. The second transmission wheel abuts against the top wall and bottom wall of the second movable slot, respectively.

12. The battery transfer device according to claim 10, characterized in that, The transmission plate includes a vertically extending second mounting plate, the support plate is provided with a guide protrusion, the second movable groove is formed in the guide protrusion, and the second mounting plate is equipped with a sliding rod adapted to the second movable groove.

13. The battery transfer device according to any one of claims 10 to 12, characterized in that, The output shaft of the drive mechanism is provided with a second drive gear, and the transmission plate is provided with a second drive rack extending in the horizontal direction. The drive mechanism drives the transmission plate to move in the horizontal direction through the meshing of the second drive gear and the second drive rack.

14. The battery transfer device according to claim 13, characterized in that, The transmission plate is provided with a first guide slide rail below it. The first guide slide rail has a first guide groove extending in the horizontal direction. The transmission plate is equipped with a first guide slider that is adapted to the first guide groove. The movement direction of the transmission plate is limited by the sliding cooperation between the first guide slider and the first guide groove.

15. The battery transfer device according to any one of claims 10 to 12, characterized in that, The tray is provided with a connecting part below it; the connecting part is provided with a vertical guide rail, and the support frame is provided with a vertical slide groove adapted to the vertical guide rail. The vertical guide rail and the vertical slide groove cooperate to guide the tray to move vertically, and / or, the connecting part is provided with a vertical limiting hole, and the support frame is provided with a limiting roller located in the vertical limiting hole. The vertical limiting hole and the limiting roller cooperate to guide the tray to move vertically.

16. The battery transfer device according to any one of claims 10 to 12, characterized in that, The transfer arm includes a first transfer arm and a second transfer arm arranged at intervals, and the pallet is located between the first transfer arm and the second transfer arm. The pallet includes a first tray body adjacent to the first transfer arm and a second tray body adjacent to the second transfer arm.

17. The battery transfer device according to claim 16, characterized in that, The driving mechanism is located between the first disc body and the second disc body, the transmission mechanisms are two in number and are symmetrically distributed on both sides of the driving mechanism, and the driving mechanism drives the first disc body and the second disc body to move synchronously through the two transmission mechanisms.

18. A battery swap station comprising a charging rack for placing a battery pack, characterized in that, The application also relates to a battery transfer device as claimed in any of claims 1 to 17.

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