Lifting device of battery swapping equipment, battery swapping equipment comprising same and battery swapping station

Abstract

The application provides a lifting device of a battery replacing device, a battery replacing device comprising the same and a battery replacing station. The lifting device of the battery replacing device is arranged on a frame of the battery replacing device to drive a battery mounting portion of the battery replacing device to lift. The lifting device comprises a driving portion, a connecting shaft, a lifting piece and a detection assembly. The driving portion and the lifting piece are coaxially connected through the connecting shaft. The driving portion is used to drive the connecting shaft to rotate. The lifting piece is used to be connected with the battery mounting portion. The detection assembly is arranged corresponding to the connecting shaft and is used to detect the position of the lifting piece. The position of the lifting piece is detected through the detection assembly, so that the movement of the lifting piece detected by the detection assembly is unbiased. Therefore, the accurate control of the lifting of the battery mounting portion is realized according to the movement of the lifting piece, and the battery replacing efficiency and safety are improved.

Description

Technical Field

[0001] This invention relates to the field of battery swapping, and in particular to a lifting device for battery swapping equipment. Background Technology

[0002] The installation of batteries in existing electric vehicles is generally divided into fixed and swappable types. For swappable batteries, a movable installation method is generally used, which allows the battery to be removed at any time for replacement or charging, and then installed back onto the vehicle body after replacement or charging is completed.

[0003] Existing automated battery swapping devices include a battery mounting section for installing the battery and a lifting device for raising and lowering the battery mounting section to complete the battery replacement. However, existing battery swapping equipment struggles to accurately determine whether the battery mounting section has been properly raised during battery replacement, which affects swapping efficiency and safety. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the defect in the prior art that it is impossible to accurately determine whether the battery mounting part is lifted into place when replacing the battery in the battery swapping equipment, and to provide a lifting device for the battery swapping equipment and the battery swapping equipment and the battery swapping station including the device.

[0005] The present invention solves the above-mentioned technical problems through the following technical solution:

[0006] A lifting device for a battery swapping device is provided, which is mounted on the frame of the battery swapping device to drive the battery mounting part of the battery swapping device to rise and fall. The lifting device includes a drive unit, a connecting shaft, a lifting member, and a detection component. The drive unit and the lifting member are coaxially connected through the connecting shaft. The drive unit is used to drive the connecting shaft to rotate. The lifting member is used to connect with the battery mounting part. The detection component is arranged corresponding to the connecting shaft and is used to detect the position of the lifting member.

[0007] In this technical solution, the drive unit is coaxially connected to the connecting shaft to drive the connecting shaft to rotate. The connecting shaft drives the lifting component to rotate, and the lifting component is connected to the battery mounting part and drives the battery mounting part to rise and fall. The lifting component is connected to the connecting shaft, and the detection component is set corresponding to the connecting shaft to detect the movement of the connecting shaft, that is, to detect the movement of the lifting component. This ensures that the movement of the lifting component detected by the detection component is without deviation, so as to achieve precise control of the raising and lowering of the battery mounting part based on the movement of the lifting component, thereby improving the efficiency and safety of the battery swapping operation.

[0008] Preferably, the detection component is used to detect the rotational position of the connecting shaft to obtain the position of the lifting member.

[0009] In this technical solution, the position of the lifting component is obtained by detecting the rotational position of the connecting shaft, which is a simple detection method.

[0010] Preferably, the detection component includes a fixed part and a follower part. The fixed part is fixed to the frame, and the follower part is connected to the connecting shaft and rotates synchronously with the connecting shaft. The rotational position of the connecting shaft is detected by the follower part through the fixed part sensing the follower part.

[0011] In this technical solution, the detection component employs a fixed part and a follower part. The follower part rotates with the connecting shaft. The fixed part senses the position of the follower part to detect the rotational position of the connecting shaft. This structure is simple, reliable, and easy to implement. The follower part is connected to the connecting shaft and rotates synchronously with it. The rotational position of the follower part is synchronized with the rotational position of the connecting shaft. The rotational position of the follower part sensed by the fixed part is the rotational position of the connecting shaft. By transmitting the rotational position information of the connecting shaft through the fixed part, the rotation of the connecting shaft is avoided from being affected by an excessively large follower part or by connecting a signal transmission module to the follower part.

[0012] Preferably, the follower part has a first follower point and / or a second follower point, the first follower point and / or the second follower point being disposed at positions on the connecting shaft corresponding to the lifting path of the battery mounting part, and the fixing part being used to sense the first follower point and / or the second follower point that rotate synchronously with the connecting shaft.

[0013] In this technical solution, a first follow-up point and / or a second follow-up point are set to detect the corresponding preset position of the battery mounting part. During the lifting and lowering process of the battery mounting part, when the battery mounting part is detected to have risen to the corresponding preset position, the drive unit is controlled to stop moving to avoid impact or damage to the equipment caused by continued movement of the drive unit. The lifting and lowering process of the battery mounting part is controlled by detecting the corresponding preset position of the battery mounting part, which is simple in structure and convenient in control.

[0014] Preferably, the follower part has a first follower point and a second follower point, and the first follower point and the second follower point are spaced apart along the circumferential direction of the connecting shaft;

[0015] The position of the first follow-up point on the connecting shaft matches the highest position of the battery mounting part on the lifting path;

[0016] The position of the second follow-up point on the connecting shaft matches the lowest position of the battery mounting part on the lifting path.

[0017] In this technical solution, the connecting shaft drives the follower and the lifting member to move, and the lifting member drives the battery mounting part to rise and fall. When the battery mounting part rises to its highest position, the first follower point of the follower is sensed by the fixing part; when the battery mounting part falls to its lowest position, the second follower point of the follower is sensed by the fixing part. The follower has a first follower point and a second follower point, which are used to detect the corresponding preset positions of the battery mounting part, namely the highest position and the lowest position of the battery mounting part.

[0018] Preferably, the follower part includes a first follower positioning ring and a second follower positioning ring sleeved and fixed on the connecting shaft along the axial direction of the connecting shaft, the first follower position is formed on the first follower positioning ring, and the second follower position is formed on the second follower positioning ring;

[0019] The fixing part includes a first sensor and a second sensor, which are disposed on the same side of the connecting shaft and point to the first follow-up positioning ring and the second follow-up positioning ring, respectively.

[0020] In this technical solution, a first sensor is set corresponding to a first follow-up positioning ring to sense the first follow-up point, i.e., to detect when the battery mounting part rises to its highest position; a second sensor is set corresponding to a second follow-up positioning ring to sense the second follow-up point, i.e., to detect when the battery mounting part descends to its lowest position. Setting the first follow-up point on the first follow-up positioning ring and the second follow-up point on the second follow-up positioning ring reduces the minimum distance between the first and second follow-up points and the fixed part during movement, facilitating sensing by the fixed part. The first and second sensors are located on the same side of the connecting shaft to make the detection assembly structure compact; the first sensor points to the first follow-up positioning ring, and the second sensor points to the second follow-up positioning ring, resulting in a short distance between the corresponding sensors and the follow-up positioning rings for easy sensing. Furthermore, compared to integrating two follow-up points on a single follow-up positioning ring, using two follow-up positioning rings and corresponding sensors facilitates adjusting the angle between the two follow-up points during commissioning and maintenance of the battery swapping equipment, allowing for equipment calibration.

[0021] Preferably, the first follower positioning ring and the second follower positioning ring are respectively sleeved on the connecting shaft and respectively fixed to the connecting shaft by locking members;

[0022] And / or, the first and second sensors of the fixing part are fixed to the frame by a bracket.

[0023] In this technical solution, the first and second follower positioning rings are fixed to the connecting shaft by locking components, so that the first and second follower positioning rings and the connecting shaft can be machined separately and then connected. The first and second sensors of the fixing part are fixed to the frame by brackets, so that the positions of the first and second sensors are fixed; since the position of the frame relative to the lifting device is fixed, the detection accuracy can be avoided due to loosening of the installation position; at the same time, the bracket fixation allows for flexible arrangement of the first and second sensors.

[0024] Preferably, the fixing part includes at least one Hall sensor, and the first follow-up point and the second follow-up point are metal parts that can be sensed by the Hall sensor.

[0025] In this technical solution, a Hall sensor is used to sense the first and second follower points. The technology is mature, the structure is simple, and the cost is low.

[0026] Preferably, the drive unit includes a flexible transmission mechanism, which includes a plurality of transmission wheels and a flexible component that is connected to the plurality of transmission wheels. There are a plurality of connecting shafts, which correspond one-to-one with the plurality of transmission wheels and are coaxially arranged. At least one of the connecting shafts is provided with the detection component.

[0027] In this technical solution, multiple transmission wheels and flexible components that cooperate with them are provided, enabling the transmission wheels to move synchronously. Each transmission wheel corresponds to a connecting shaft, and the corresponding connecting shaft and transmission wheel are coaxially connected. Because the transmission wheels move synchronously, they also drive the connecting shafts to move synchronously, thus lifting the battery mounting section smoothly. Since the connecting shafts move synchronously, at least one connecting shaft is equipped with a detection component to detect the lifting status of the battery mounting section. When all transmission shafts corresponding to multiple transmission wheels are subjected to lifting detection, the reliability is further enhanced.

[0028] Preferably, the drive unit includes a power unit, a first transmission unit, and a second transmission unit;

[0029] The first transmission unit includes a first rotating component and a connecting part that are connected by transmission; the second transmission unit includes a mating part and a second rotating component that are connected by transmission.

[0030] The first rotating component is connected to the power unit for transmission, and performs a first rotational motion under the drive of the power unit, and drives the connecting part to perform linear motion;

[0031] The connecting part is connected to the mating part, which drives the mating part to make linear motion and drives the second rotating part to make a second rotational motion;

[0032] The second rotating member and the lifting member are coaxially connected via the connecting shaft.

[0033] In this technical solution, the power unit drives the first rotating component to move, causing it to perform a first rotational motion; the first rotating component drives the connecting part to move, causing it to perform a linear motion; the connecting part drives the mating part to perform a linear motion together; the mating part drives the second rotating component to move, causing it to perform a second rotational motion; the second rotating component and the lifting component are coaxially connected to the connecting shaft, and the second rotating component drives the lifting component to move, thereby driving the battery mounting part to rise and fall. The multiple conversions between rotational and linear motion make the lifting device's transmission flexible and facilitate the arrangement of its various components. Furthermore, it allows for a more compact transmission structure, saving space.

[0034] Preferably, the two ends of the movement path of the connecting part have a first limit position and a second limit position. The detection component further includes a stroke detection mechanism, which includes two stroke detection fixing members disposed on the movement path of the connecting part and a stroke detection follower disposed on the connecting part. The two stroke detection fixing members are spaced apart between the first limit position and the second limit position. The position of the connecting part is detected by sensing the stroke detection follower through the stroke detection fixing members.

[0035] In this technical solution, a stroke detection follower is set to follow the movement of the connecting part and provide feedback on the position of the connecting part; then, a stroke detection fixture senses the stroke detection follower to realize the position detection of the connecting part. The movement of the connecting part is detected by the stroke detection fixture and the stroke detection follower, resulting in a simple structure.

[0036] Preferably, the battery mounting part has a highest position and a lowest position on the lifting path, and when the battery mounting part moves to the highest position or the lowest position, the connecting part is located between the two stroke detection fixing members.

[0037] In this technical solution, the connecting part moves between two stroke detection fixing parts, and the movement path of the battery mounting part can cover the highest and lowest positions, leaving a safety margin between the connecting part and the stroke detection fixing parts to improve the safety of the lifting device.

[0038] Preferably, the rotation axis direction of the first rotational motion and the motion direction of the linear motion both extend along one side of the battery mounting portion, and the rotation axis direction of the second rotational motion points towards the battery mounting portion.

[0039] In this technical solution, the first rotational motion of the power unit is converted into the second rotational motion of the connecting shaft through the first and second transmission units. The rotation axis of the first rotational motion of the power unit is in the same direction as the linear motion, both extending along one side of the battery mounting portion; the rotation axis of the second rotational motion of the second rotating component points towards the battery mounting portion, which is inconsistent with the rotation axis of the first rotational motion. This eliminates the need for the power unit to be directly opposite the battery mounting portion, making the structural layout of the battery swapping equipment more flexible. Simultaneously, the connecting portion in the first transmission unit and the mating portion in the second transmission unit both perform linear motion, extending in the same direction, making the structures of the first and second transmission units compact and avoiding interference with other structural directions of the battery swapping equipment.

[0040] Preferably, the power unit includes a motor;

[0041] And / or, the first transmission unit further includes a slider, the connecting part is disposed on the slider and moves with the slider, and the first rotating part is connected to the connecting part through the slider;

[0042] And / or, the second transmission unit further includes a flexible element, which is connected to the second rotating element to form a flexible transmission mechanism. The mating part is disposed on the flexible element and is connected to the second rotating element through the flexible element.

[0043] In this technical solution, a motor drive is used, which has a simple structure and mature technology.

[0044] Preferably, the motor is a servo motor.

[0045] In this technical solution, the servo motor has strong controllability and is easy to control.

[0046] Preferably, the first rotating component is a lead screw, and the lead screw and the sliding component constitute a lead screw drive.

[0047] In this technical solution, a ball screw drive is used, which has a simple and compact structure and a large transmission ratio, and can greatly reduce the size of the motor used.

[0048] Preferably, the lifting component includes a connecting rod, a first end of which is connected to the connecting shaft and rotates synchronously with the connecting shaft, a second end of which is rotatably connected to the battery mounting portion, and a detection component for detecting the position of the connecting rod as it rotates with the connecting shaft.

[0049] In this technical solution, the connecting shaft drives the connecting rod to rotate, and the connecting rod drives the battery mounting part to rise and fall, resulting in a simple structure. The position of the lifting component is obtained by detecting the rotational position of the connecting rod, which is a simple detection method.

[0050] A battery swapping device includes a lifting device for the battery swapping device described in any of the foregoing technical solutions.

[0051] Preferably, there are two lifting devices, which are located on opposite sides of the battery mounting section and move the battery mounting section up and down synchronously.

[0052] In this technical solution, two lifting devices are provided, and the two lifting devices move synchronously, making the lifting and lowering of the battery mounting section smooth. The two lifting devices are located on two opposite sides of the battery mounting section, resulting in a large span and good symmetry between the two lifting devices, which improves the stability and force balance of the lifting and lowering of the battery mounting section. In addition, the above structural arrangement also avoids the need for transmission mechanisms arranged on the other two opposite sides of the battery mounting section, which can greatly reduce the height of the other two opposite sides of the battery mounting section, especially the height of the equipment frame on the other two opposite sides. This makes it possible for battery pack transfer equipment such as palletizers or forklifts to extend from these two sides to transfer the battery packs.

[0053] A battery swapping station comprising the battery swapping equipment described in any of the foregoing technical solutions.

[0054] The positive and progressive effects of this invention are as follows:

[0055] By incorporating a detection component to monitor the position of the lifting assembly, precise control of the battery mounting section's lifting and lowering can be achieved based on the movement of the lifting assembly, ensuring smooth operation. The lifting assembly is connected to a connecting shaft, and the detection component is positioned corresponding to this shaft to detect its movement, thus detecting the movement of the lifting assembly. This ensures accurate and error-free detection of the lifting assembly's movement, thereby improving the efficiency and safety of battery swapping operations. Attached Figure Description

[0056] Figure 1 This is a schematic diagram of the structure of a battery swapping device according to an embodiment of the present invention;

[0057] Figure 2 This is a partial structural schematic diagram of a battery swapping device according to an embodiment of the present invention;

[0058] Figure 3 This is a schematic diagram of the lifting device and frame according to an embodiment of the present invention;

[0059] Figure 4 This is a schematic diagram of the lifting device and frame according to an embodiment of the present invention;

[0060] Figure 5 This is a schematic diagram of the height detection mechanism according to an embodiment of the present invention;

[0061] Figure 6 This is a schematic diagram of the lifting member and frame according to an embodiment of the present invention;

[0062] Figure 7 This is a schematic diagram of the connecting rod in a lifting component according to an embodiment of the present invention;

[0063] Figure 8 This is a schematic diagram of the structure of the drive unit according to an embodiment of the present invention;

[0064] Figure 9 This is a schematic diagram of the structure of the drive unit according to an embodiment of the present invention;

[0065] Figure 10 for Figure 9 A magnified view of part A in the middle;

[0066] Figure 11 for Figure 10 A magnified view of part B in the middle section;

[0067] Figure 12 This is a schematic diagram of the stroke detection mechanism according to another embodiment of the present invention.

[0068] Explanation of reference numerals in the attached figures:

[0069] Lifting device 1

[0070] Power unit 11, first transmission unit 12, first rotating component 13, sliding component 14, second transmission unit 15, flexible component 16, second rotating component 17, mating part 18, connecting part 19;

[0071] Connecting shaft 30;

[0072] Lifting component 40, connecting rod 41, extension part 42, mounting boss 43, slide groove 44;

[0073] Height detection mechanism 50, fixing part 51, first sensor 52, second sensor 53, bracket 54, follower part 56, first follower positioning ring 57, first follower point 58, second follower positioning ring 59, second follower point 60, locking part 61;

[0074] Stroke detection mechanism 70, stroke detection fixture 71, stroke detection follower 72;

[0075] Battery mounting section 2;

[0076] Framework 3;

[0077] 100 battery swapping devices. Detailed Implementation

[0078] The present invention will be further illustrated by way of embodiments below, but the present invention is not limited to the scope of the embodiments described herein.

[0079] Figures 1-11 This is a schematic diagram of the structure of a battery swapping device 100 provided in an embodiment of the present invention. Figure 12 This is a schematic diagram of the stroke detection mechanism 70 according to another embodiment of the present invention.

[0080] like Figure 1 , Figure 2 As shown, the battery swapping equipment 100 includes a lifting device 1, a frame 3, and a battery mounting part 2. The battery mounting part 2 is disposed within the frame 3, and the lifting device 1 is mounted on the frame 3 and connected to the battery mounting part 2 to drive the battery mounting part 2 to rise and fall.

[0081] like Figures 3-11 As shown, the lifting device 1 includes a drive unit, a connecting shaft 30, a lifting member 40, and a detection assembly. The drive unit and the lifting member 40 are coaxially connected via the connecting shaft 30. The drive unit drives the connecting shaft 30 to rotate, and the lifting member 40 is connected to the battery mounting unit 2. The height detection assembly in the detection assembly is provided corresponding to the connecting shaft 30 and is used to detect the position of the lifting member 40.

[0082] The drive unit is coaxially connected to the connecting shaft 30 to drive the connecting shaft 30 to rotate. The connecting shaft 30 drives the lifting member 40 to rotate. The lifting member 40 is connected to the battery mounting part 2 and drives the battery mounting part 2 to rise and fall. The lifting member 40 is connected to the connecting shaft 30. The detection component is set corresponding to the connecting shaft 30 to detect the movement of the connecting shaft 30, that is, to detect the movement of the lifting member 40. This ensures that the movement of the lifting member 40 detected by the detection component is without deviation, so as to achieve precise control of the raising and lowering of the battery mounting part 2 based on the movement of the lifting member 40. The battery mounting part can be raised to the designated position in one lift, making the battery swapping operation simple.

[0083] In this embodiment, the battery mounting section 2 has two lifting devices 1, which are located on opposite sides of the battery mounting section 2 and move synchronously to raise and lower the battery mounting section 2. The presence of two lifting devices 1, and their synchronous movement, ensures smooth raising and lowering of the battery mounting section 2. The location of the two lifting devices 1 on opposite sides of the battery mounting section 2 provides a large span and good symmetry, improving the stability and force balance of the battery mounting section 2 during raising and lowering. Furthermore, this structural arrangement avoids arranging transmission mechanisms on the other two opposite sides of the battery mounting section 2, significantly reducing the height of the other two opposite sides, especially the height of the equipment frame on those sides. This facilitates the transfer of battery packs by palletizers or forklift forks from these sides.

[0084] In this embodiment, each lifting device 1 includes two lifting members 40 and two connecting shafts 30, with each lifting member 40 and connecting shaft 30 corresponding to the other. The two lifting members 40 in one lifting device 1 are respectively located at both ends of the lifting device 1 near their ends. In this embodiment, the four lifting devices 1 are provided at the four corner attachments of the battery mounting part 2 to ensure smooth lifting and lowering of the battery mounting part 2.

[0085] In other embodiments, the number of lifting members 40 may be single or multiple. In other embodiments, the connecting shafts 30 may or may not correspond one-to-one with the lifting members 40.

[0086] like Figure 3 , Figure 4 , Figure 8 , Figure 10 As shown, in this embodiment, the drive unit specifically includes a power unit 11, a first transmission unit 12, and a second transmission unit 15. The first transmission unit 12 includes a first rotating member 13, a sliding member 14, and a connecting part 19. The second transmission unit 15 includes a flexible member 16, a second rotating member 17, and a mating part 18. The power unit 11, the first rotating member 13, the sliding member 14, the connecting part 19, the mating part 18, the flexible member 16, and the second rotating member 17 are sequentially connected in a transmission manner. The sliding member 14 is fixedly connected to the connecting part 19, and the mating part 18 is detachably connected to the connecting part 19. The first transmission unit 12 and the second transmission unit 15 are used to transmit the power provided by the power unit 11 to the lifting member 40 after speed change and reversal. Speed ​​change ensures smooth lifting of the battery mounting part 2, and reversal facilitates the arrangement of the components of the lifting device 1, making the lifting device 1 more compact. In this embodiment, both the first transmission unit 12 and the second transmission unit 15 function as deceleration units.

[0087] In this embodiment, the second transmission unit 15 is a flexible transmission mechanism, wherein the flexible element 16 is a chain, the second rotating element is a sprocket, and the mating part 18 is used to adjust the chain tension. In this embodiment, the connecting part 19 is provided with a groove that matches the hexagonal bolt structure of the mating part 18. By partially embedding the mating part 18 into the groove of the connecting part 19, the connecting part 19 can drive the flexible element 16 to move.

[0088] In this embodiment, the connecting part 19 and the first rotating member 13 are connected by the sliding member 14, and the connecting part 19 and the flexible member 16 are connected by the mating part 18. In other embodiments, the mating part 18 may be omitted, and the connecting part 19 may be directly connected to the flexible member 16. In other embodiments, the mating part 18 may not be used for adjusting the tightness of the flexible transmission mechanism, but only for connecting the connecting part and the flexible member 16.

[0089] like Figure 3As shown, in this embodiment, there are two second rotating parts and two connecting shafts 30. The two connecting shafts 30 correspond one-to-one with the two second rotating parts 17 and are coaxially arranged.

[0090] In this embodiment, the power unit 11 is an electric motor, which generates power by inputting electricity. Specifically, a servo motor is used for easy precision control. The first rotating component 13 is a lead screw, and the sliding component 14 is provided with a thread for transmission with the lead screw. Through the rotation of the lead screw, the sliding component 14 drives the connecting part 19, the mating part 18, and the flexible component 16 to move horizontally. The lead screw transmission structure is simple, compact, and has a large transmission ratio, making it easy to use an inexpensive high-speed motor to reduce costs. In other embodiments, the power unit 11 can be implemented using other components, such as a cylinder.

[0091] The connecting part 19 is fixed on the sliding member 14; the flexible member 16 is detachably connected to the connecting part 19 through the mating part 18. When the connecting part 19 moves with the sliding member 14, it drives the mating part 18 and the flexible member 16 to move together; the second rotating member 17 is fixed on the two connecting shafts 30 respectively; there are two lifting members 40 and they are respectively connected to the connecting shafts 30. That is, the two second rotating members 17, the two connecting shafts 30, and the two lifting members 40 correspond one-to-one, and the corresponding sprockets and lifting members 40 are coaxially connected.

[0092] The specific transmission path of the drive unit driving the lifting member 40 is as follows: the power unit 11 drives the first rotating member 13 to perform a first rotational motion; the first rotating member 13 drives the sliding member 14 to perform a linear motion; the sliding member 14 drives the connecting part 19, the mating part 18, and the flexible member 16 to perform a linear motion together; the flexible member 16 drives the two second rotating members 17 to perform a second rotational motion; the second rotating members 17 and the lifting member 40 are coaxially connected to the connecting shaft 30, and the second rotating members 17 drive the lifting member 40 to move, thereby driving the battery mounting part 2 to rise and fall. The multiple conversions of rotation and linear motion of each component of the drive unit make the transmission of the lifting device 1 flexible and facilitate the arrangement of each component of the lifting device 1.

[0093] like Figure 3 , Figure 4 , Figure 8 , Figure 9 , Figure 10As shown, in this embodiment, the rotation axis of the first rotating member 13 and the moving directions of the sliding member 14, connecting part 19, mating part 18, and flexible member 16 all extend along one side of the battery mounting part 2; the rotation axis of the sprocket is perpendicular to the moving direction of the chain, inconsistent with the rotation axis of the lead screw, and points towards the battery mounting part 2, so that the power unit 11 does not need to be directly facing the battery mounting part 2, making the structural layout of the battery swapping device 100 flexible. At the same time, the connecting part 19 in the first transmission unit 12 and the flexible member 16 in the second transmission unit 15 both move linearly, with the movement direction extending in the same direction, making the structure of the first transmission unit 12 and the second transmission unit 15 compact and avoiding interference with other directions of the battery swapping device 100.

[0094] In other embodiments, the sliding member 14 may be omitted, and a thread that meshes with the first rotating member 13 may be directly machined on the connecting portion 19. In other embodiments, the second transmission unit may also employ other flexible transmission mechanisms, such as belt drives. In other embodiments, the first transmission unit 12 may also employ a gear and rack structure, or other structures that can convert rotational motion into linear motion.

[0095] like Figure 6 , Figure 7 As shown, the lifting component 40 includes a connecting rod 41 and a sliding groove 44. One end of the connecting rod 41 is connected to the connecting shaft 30 and rotates synchronously with the connecting shaft 30. The other end of the connecting rod 41 has a cylindrical protrusion 42 that extends into the sliding groove 44 and can slide along the sliding groove 44. The sliding groove 44 is fixed to the beam of the battery mounting part 2. When the connecting rod 41 rotates with the connecting shaft 30, the protrusion 42 rotates with the connecting rod 41 and moves within the sliding groove 44, causing the sliding groove 44 to move vertically. The sliding groove 44 then causes the battery mounting part 2 to rise and fall.

[0096] In other embodiments, a guide mechanism may be provided between the battery mounting part 2 and the frame 3 to guide the lifting and lowering of the battery mounting part 2, such as providing a guide rail on the frame and a guide block matching the guide rail on the battery mounting part 2.

[0097] The connecting rod 41 and the slide 44 are used to convert the rotational motion of the connecting shaft 30 into the linear motion of the battery mounting part 2, resulting in a simple and compact structure. In other embodiments, existing linear motion mechanisms can also be used to drive the connecting shaft 30 and the battery mounting part 2, thereby achieving the purpose of converting the rotational motion of the connecting shaft 30 into the linear motion of the battery mounting part 2.

[0098] like Figure 7As shown, the connecting rod 41 is provided with a mounting boss 43 to mount the protrusion 42, so that the nut fixing the protrusion 42 does not extend beyond the end face of the connecting rod 41, thereby reducing the size of the lifting member 40 along the axis of the connecting rod 41 and making the lifting device 1 have a compact structure.

[0099] In this embodiment, the detection components of the lifting device 1 specifically include a height detection mechanism 50 for detecting the position of the lifting member 40 and a stroke detection mechanism 70 for detecting the position of the connecting part 19. Additionally, in this embodiment, the lifting device 1 includes a control module. The control module generates corresponding control signals based on the signals detected by the height detection mechanism 50 and the stroke detection mechanism 70, and transmits these control signals to the motor of the drive unit to control the motor's speed or whether it stops.

[0100] like Figure 3 As shown, the height detection mechanism 50 is mounted on the connecting shaft 30, the lifting member 40 is connected to the connecting shaft 30, and the detection component is set corresponding to the connecting shaft 30 to detect the movement of the connecting shaft 30, that is, to detect the movement of the lifting member 40, so that the movement of the lifting member 40 detected by the detection component is without deviation, so as to achieve precise control of the lifting of the battery mounting part 2 according to the movement of the lifting member 40.

[0101] like Figure 5 As shown, the detection component includes a fixed part 51 and a follower part 56. The fixed part 51 is fixed to the frame 3, and the follower part 56 is connected to the connecting shaft 30 and rotates synchronously with the connecting shaft 30. The fixed part 51 senses the rotational position of the connecting shaft 30 through the follower part 56. During the lifting and lowering of the battery mounting part 2, the frame 3 remains stationary relative to the ground. The fixed part 51 is mounted on the frame 3 to prevent the fixed part from shaking and affecting the detection accuracy. The follower part 56 is connected to the connecting shaft 30, that is, coaxially connected with the lifting member 40. The follower part 56 and the lifting member 40 remain synchronized to ensure that the position information of the lifting member 40 detected by the height detection component is accurate.

[0102] like Figure 5 As shown, the follower part 56 includes a first follower positioning ring 57 and a second follower positioning ring 59, which are sleeved and fixed on the connecting shaft 30 along the axial direction of the connecting shaft 30. The first follower positioning ring 57 has a first follower point 58, and the second follower positioning ring 59 has a second follower point 60. The fixing part 51 includes a first sensor 52 and a second sensor 53. The first sensor 52 corresponds to and points to the first follower positioning ring 57, and the second sensor 53 corresponds to and points to the second follower positioning ring 59.

[0103] The battery mounting section 2 has corresponding highest and lowest positions during the lifting and lowering process. In this embodiment... Figures 4-7 This is a schematic diagram of the structure of some components in the battery swapping device 100 when the battery mounting section 2 is in the lowest position.

[0104] pass Figure 5 As can be seen, the second follower point 60 rotates to coincide with the second sensor 53. When rotated to this position, the second sensor 53 can sense the second follower point 60 and generate a signal. At this time, the battery mounting part 2 is exactly at its lowest position, that is, the second follower point 60 corresponds to the lowest position of the battery mounting part 2. Similarly, the first follower point 58 corresponds to the highest position of the battery mounting part 2 and can generate a signal when it is at its highest position.

[0105] In this embodiment, a first follow-up point 58 is set to detect the highest position of the battery mounting part 2, and a second follow-up point 60 is set to detect the lowest position of the battery mounting part 2. During the raising and lowering of the battery mounting part 2, when the battery mounting part 2 is detected to have risen to the highest position, the drive unit is controlled to stop moving; when the battery mounting part 2 is detected to have fallen to the lowest position, the drive unit is controlled to stop moving. Specifically, when the first sensor 52 senses the first follow-up point 58, or when the second sensor 53 senses the second follow-up point 60, an electrical signal is generated and sent to the control module. The control module controls the motor to stop moving according to the received signal.

[0106] The lifting and lowering process of the battery mounting part 2 is controlled by detecting its lowest and highest positions, resulting in a simple structure and convenient control. In other embodiments, an angle sensor or other sensors can be used to detect the movement of the connecting shaft 30 to monitor the position of the battery mounting part 2 throughout the entire process.

[0107] In this embodiment, the first follower point 58 is set on the first follower positioning ring 57, and the second follower point 60 is set on the second follower positioning ring 59, so as to reduce the minimum distance between the first follower point 58 and the second follower point 60 and the fixed part 51 during movement, making it easier for the fixed part 51 to sense. In other embodiments, the first follower point 58 and the second follower point 60 can also be directly set on the connecting shaft 30. In other embodiments, the first follower point 58 and the second follower point 60 can be set on a follower positioning ring. If the first follower point and the second follower point correspond to the same axial position of the connecting shaft, only one fixed part is needed for sensing; if the first follower point and the second follower point correspond to different axial positions of the connecting shaft, two fixed parts are needed for sensing.

[0108] In this embodiment, the first sensor 52 and the second sensor 53 are both located on the same side of the connecting shaft 30, specifically directly above the connecting shaft, with the sensors pointing downwards to prevent other debris from falling onto the sensors and affecting their operation. The first sensor 52 points towards the first follow-up positioning ring 57, and the second sensor 53 points towards the second follow-up positioning ring 59.

[0109] In this embodiment, both the first sensor 52 and the second sensor 53 are Hall sensors, and the first follow-up point 58 and the second follow-up point 60 are metal parts that can be sensed by the Hall sensors. Using Hall sensors to sense the first follow-up point 58 and the second follow-up point 60 is a mature technology with a simple structure and low cost. In other embodiments, the height detection component can also use other sensors to directly or indirectly detect the position of the lifting member 40.

[0110] like Figure 5 As shown, in this embodiment, the first follower positioning ring 57 and the second follower positioning ring 59 are respectively fixed to the connecting shaft 30 by locking members 61, so that the first follower positioning ring 57, the second follower positioning ring 59, and the connecting shaft 30 can be processed separately and then connected. In addition, compared with integrating two follower points on one follower positioning ring, using two follower positioning rings and corresponding two sensors makes it convenient to adjust the angle between the two follower points during the commissioning and maintenance of the power swapping equipment, and to calibrate the power swapping equipment. The first sensor 52 and the second sensor 53 of the fixing part 51 are fixed to the frame 3 by bracket 54. The bracket 54 fixation allows for flexible arrangement of the first sensor 52 and the second sensor 53, while reducing the distance between the first sensor 52 and the first follower point 58, the second sensor 53 and the second follower point 60.

[0111] In this embodiment, the height detection mechanism 50 detects the rotational position of the connecting shaft 30 to obtain the position of the lifting member 40, and then controls the lifting and lowering of the battery mounting part 2 based on the position information of the lifting member 40. In other embodiments, the height detection mechanism 50 may also directly detect the position of the battery mounting part 2, or detect the movement of the lifting member 40, or detect the movement of components in the drive unit to control the lifting and lowering of the battery mounting part 2.

[0112] In this embodiment, the battery swapping equipment 100 specifically has two lifting devices 1, each lifting device 1 having two connecting shafts 30, and each connecting shaft 30 is equipped with a height detection mechanism 50. One lifting device 1 has two height detection mechanisms 50; if one height detection mechanism 50 fails, the lifting device 1 can still complete the lifting of the battery installation section 2 using only one height detection mechanism 50. By providing two height detection mechanisms 50, if a structural fault in the lifting device 1 causes inconsistencies in the data fed back by the two height detection mechanisms 50, an alarm signal can be set to facilitate operator inspection of the lifting device 1. In other embodiments, the number of height detection mechanisms 50 may vary according to the number of connecting shafts 30; they may correspond one-to-one with the connecting shafts 30 or be fewer than the number of connecting shafts 30. In other embodiments, only one height detection mechanism 50 may be provided at each lifting device 1. In other embodiments, only one height detection mechanism 50 may be provided in each battery swapping equipment 100.

[0113] like Figure 10 , Figure 11 As shown, the stroke detection mechanism 70 includes two stroke detection fixing members 71 disposed on the movement path of the slider 14, and a stroke detection follower 72 disposed on the slider 14. The position of the slider 14 is detected by sensing the stroke detection follower 72 through the stroke detection fixing members 71. Specifically, both stroke detection fixing members 71 are Hall sensors. In other embodiments, other sensors can also be used to detect the position of the slider 14. In this embodiment, the slider 14 and the connecting part 19 are fixedly connected, and the movement path of the slider 14 reflects the movement path of the connecting part 19. The movement position of the connecting part 19 is obtained by detecting the position of the slider 14.

[0114] The sliding member 14 has a first limit position and a second limit position at both ends of its movement path. Two stroke detection fixing members 71 are spaced apart between the first limit position and the second limit position. When the battery mounting part 2 moves to the highest or lowest position, the sliding member 14 is located between the two stroke detection fixing members 71. As the sliding member 14 moves between the two stroke detection fixing members 71, the movement path of the battery mounting part 2 can cover both the highest and lowest positions. After the battery mounting part 2 rises to the highest position or falls to the lowest position, the drive unit continues to move until either stroke detection fixing member 71 senses the stroke detection follower 72, generating an electrical signal that is sent to the control module. The control module controls the motor to stop moving based on the received signal to prevent the drive unit from continuing to move and damaging the battery swapping equipment 100, thereby improving the safety of the lifting device 1.

[0115] like Figure 12 As shown, in other embodiments, the stroke detection fixing member 71 can also be wedge-shaped, and the stroke detection follower member 72 can be wedge-shaped to cooperate with the stroke detection fixing member 71. When the stroke detection follower member 72 comes into contact with any other stroke detection follower member 72 through horizontal movement, it will brake the sliding member 14, thereby stopping the drive unit from moving. The two stroke detection fixing members 71 are also arranged at intervals between the first limit position and the second limit position, including the case where the two stroke detection fixing members are respectively arranged at the first limit position and the second limit position.

[0116] In other embodiments, the first and second extreme positions may correspond exactly to the highest and lowest positions, respectively. The stroke detection mechanism 70 obtains the position of the battery mounting part by detecting the movement position of the slider 14. After the first sensor 52, the second sensor 53, or the stroke detection fixing member 71 senses a signal and sends the signal to the control module, the control module will control the drive unit to stop moving. Simultaneously, the position of the battery mounting part is obtained through both the stroke detection mechanism 70 and the height detection mechanism 50, ensuring correct control of the raising and lowering of the battery mounting part even if either the stroke detection mechanism 70 or the height detection mechanism 50 malfunctions.

[0117] In other embodiments, the first and second limit positions may correspond exactly to the highest and lowest positions, respectively. The stroke detection mechanism 70 obtains the position of the battery mounting part by detecting the movement position of the slider 14. The control module will only control the drive unit to stop moving after receiving the signal sent by the stroke detection fixing member 71 and the signal sent by the fixing part 51. If the control module does not receive the electrical signal from the fixing part 51 within a preset time after receiving the signal from the stroke detection fixing member 71, or if the control module does not receive the signal from the stroke detection fixing member 71 within a preset time after receiving the electrical signal from the fixing part 51, it indicates that there is a sensor malfunction, or that the drive unit has a large transmission error, or that the lifting member has a large transmission error. The control system will issue an alarm signal to remind the operator to check or recalibrate the lifting device.

[0118] By applying the battery swapping device 100 of any of the above embodiments to a battery swapping station, a battery swapping station capable of detecting the position of the lifting member 40 can be obtained. For details on how to apply the battery swapping device 100 to a battery swapping station, please refer to the prior art.

[0119] While specific embodiments of the present invention have been described above, those skilled in the art should understand that these are merely illustrative examples, and the scope of protection of the present invention is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, but all such changes and modifications fall within the scope of protection of the present invention.

Claims

1. A lifting device of a battery replacement apparatus for being provided on a frame of the battery replacement apparatus to drive a battery mounting portion of the battery replacement apparatus to be lifted, characterized in that, The lifting device comprises a driving part, a connecting shaft, a lifting part and a detection assembly, the driving part and the lifting part are coaxially connected through the connecting shaft, the driving part is used for driving the connecting shaft to rotate, the lifting part is used for connecting with the battery mounting part, and the detection assembly is arranged corresponding to the connecting shaft and is used for detecting the position of the lifting part; The driving part comprises a power unit, a first transmission unit and a second transmission unit; The first transmission unit comprises a first rotating part and a connecting part in transmission connection, and the second transmission unit comprises a matching part and a second rotating part in transmission connection; The first rotating part is in transmission connection with the power unit, rotates under the driving of the power unit to make a first rotating movement, and drives the connecting part to make a linear movement; The connecting part is connected with the matching part, drives the matching part to make a linear movement, and drives the second rotating part to make a second rotating movement; The second rotating part and the lifting part are coaxially connected through the connecting shaft.

2. The lifting device of the battery replacing apparatus according to claim 1, wherein The detection assembly is used for detecting the rotating position of the connecting shaft to obtain the position of the lifting part. 3.The lifting device of the battery replacing apparatus according to claim 2, wherein The detection assembly comprises a fixed part and a following part, the fixed part is fixed on the frame, the following part is connected to the connecting shaft and rotates synchronously with the connecting shaft, and the rotating position of the connecting shaft is detected through the fixed part sensing the following part.

4. The lifting device of the battery replacing apparatus according to claim 3, wherein The following part has a first following point and / or a second following point, the first following point and / or the second following point are arranged at positions corresponding to the lifting path of the battery mounting part on the connecting shaft, and the fixed part is used for sensing the first following point and / or the second following point rotating synchronously with the connecting shaft. 5.The lifting device of the battery replacing apparatus according to claim 4, wherein The following part has a first following point and a second following point, and the first following point and the second following point are arranged at intervals along the circumferential direction of the connecting shaft; The position of the first following point on the connecting shaft matches the highest position of the battery mounting part on the lifting path; The position of the second following point on the connecting shaft matches the lowest position of the battery mounting part on the lifting path. 6.The lifting device of the battery replacing apparatus according to claim 5, wherein The following part comprises a first following positioning ring and a second following positioning ring which are sleeved on the connecting shaft in the axial direction of the connecting shaft and are fixed on the connecting shaft, the first following point is formed on the first following positioning ring, and the second following point is formed on the second following positioning ring; The fixed part comprises a first sensor and a second sensor, and the first sensor and the second sensor are arranged on the same side of the connecting shaft and respectively point to the first following positioning ring and the second following positioning ring. 7.The lifting device of the battery replacing apparatus according to claim 6, wherein The first following positioning ring and the second following positioning ring are respectively sleeved on the connecting shaft and are respectively fixed on the connecting shaft through a locking part; And / or, the first sensor and the second sensor of the fixed part are fixed on the frame through a support. 8.The lifting device of the battery replacing apparatus according to claim 4, wherein The fixed part comprises at least one Hall sensor, and the first following point and the second following point are metal parts which can be sensed by the Hall sensor. 9.The lifting device of the battery replacing apparatus according to claim 1, wherein The driving part comprises a flexible transmission mechanism, the flexible transmission mechanism comprises a plurality of transmission wheels and a flexible piece connected with the plurality of transmission wheels, the connecting shaft is provided with a plurality of connecting shafts, the plurality of connecting shafts correspond to the plurality of transmission wheels one by one and are coaxially arranged, and at least one connecting shaft is provided with the detection assembly. 10.The lifting device of the battery replacing apparatus according to claim 1, wherein The two ends of the movement path of the connecting part have a first limit position and a second limit position, the detection assembly further comprises a stroke detection mechanism, the stroke detection mechanism comprises two stroke detection fixed pieces arranged on the movement path of the connecting part and a stroke detection follower arranged on the connecting part, the two stroke detection fixed pieces are arranged between the first limit position and the second limit position, and the position of the connecting part is detected through the sensing of the stroke detection fixed pieces on the stroke detection follower. 11.The lifting device of the battery replacing apparatus according to claim 10, wherein The battery mounting part has a highest position and a lowest position on the lifting path, when the battery mounting part moves to the highest position or the lowest position, the connecting part is located between the two stroke detection fixed pieces. 12.The lifting device of the battery replacing apparatus according to claim 10, wherein The rotation axis direction of the first rotary motion and the motion direction of the linear motion both extend along one side of the battery mounting part, and the rotation axis direction of the second rotary motion points to the battery mounting part. 13.The lifting device of the battery replacing apparatus according to claim 1, wherein The lifting piece comprises a connecting rod, a first end of the connecting rod is connected to the connecting shaft and rotates synchronously with the connecting shaft, and a second end of the connecting rod is used for rotatable connection with the battery mounting part, and the detection assembly is used for detecting the position of the connecting rod rotating with the connecting shaft.

14. A battery replacement device, characterized by, The lifting device comprises the lifting device of the battery replacing equipment.

15. The battery replacement device according to claim 14, wherein The lifting device is provided with two lifting devices, the two lifting devices are located on two opposite sides of the battery mounting part respectively, and the two lifting devices drive the battery mounting part to lift through synchronous action.

16. A battery swap station, characterized by, The battery replacing equipment comprises the battery replacing equipment of claim 14 or 15. The battery replacing equipment comprises the battery replacing equipment of claim 14 or 15.

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