Battery replacement equipment and battery replacement method

Abstract

The present application provides a battery swap device and method, the battery swap device comprising: a base; a connecting assembly, comprising a first bearing part connected to the base, when the robotic arm moves toward the battery box until the first bearing part is located below the cross bar of the bracket of the battery box, the first bearing part moves upward with the base to move the battery box by lifting the cross bar. The above-mentioned battery swap device and method are provided with a connecting assembly on the robotic arm, and the connecting assembly is provided with a connecting part. When the robotic arm moves toward the battery box until the connecting part is located below the cross bar of the battery box bracket, the robotic arm drives the connecting part to move upward so as to lift the battery box. In the process of docking the battery box bracket, it is no longer necessary to adjust the posture of the battery swap device and the cross bar of the battery box bracket can be hooked, so that the battery box can be moved quickly, thereby improving the battery swap efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of battery replacement, and in particular to a battery replacement device and a battery replacement method. Background Art

[0002] The statements in this section merely provide background information related to the present disclosure and do not necessarily constitute prior art.

[0003] With the widespread use of electric vehicles, battery replacement equipment for replacing battery boxes for electric vehicles has also been used. To replace the battery box of an electric vehicle, a hoist is usually required to lift the battery box and move it to a storage area for storage and charging. The battery box is generally placed in a battery frame, and a battery box bracket is provided on the top of the battery frame, so that the battery replacement equipment can dock with the battery box bracket to move the battery box.

[0004] During the process of docking the battery swap equipment with the battery box bracket, since there may be deviations in the placement of the battery box, the battery swap equipment needs to adjust the angle of the hoist or the extension angle of the battery swap equipment before docking with the battery box bracket, which greatly reduces the efficiency of battery box replacement. Summary of the invention

[0005] In view of the above, it is necessary to provide a battery replacement device and a battery replacement method to improve the efficiency of docking battery boxes.

[0006] The present disclosure first provides a battery replacement device, including:

[0007] matrix;

[0008] The connecting assembly includes a first bearing part connected to the base. When the robotic arm moves toward the battery box until the first bearing part is located below the cross bar of the bracket of the battery box, the first bearing part moves upward with the base to move the battery box by lifting the cross bar.

[0009] Preferably, the base comprises a frame and a retractable mechanical arm, and the mechanical arm is connected to the frame;

[0010] The connecting assembly also includes a second bearing portion, which is connected to the mechanical arm. The first bearing portion and the second bearing portion extend toward the end of the mechanical arm to bear the cross bar of the battery box.

[0011] Preferably, the connecting assembly also includes a pin and a socket corresponding to the pin, one of the pin and the socket is arranged on the first bearing part, and the other is arranged on the cross bar, and when the first bearing part is located below the cross bar, the first bearing part moves upward with the robotic arm so that the pin is inserted into the socket of the cross bar.

[0012] Preferably, the connecting assembly further comprises a driving mechanism, and the driving mechanism is used for driving the battery box to rotate around the latch to adjust the angle of the battery box when the first bearing part and the second bearing part hold up the cross bar of the battery box.

[0013] Preferably, the second carrying part is movably connected to the robotic arm, and the driving mechanism is connected to the second carrying part to drive the second carrying part to move and adjust the angle of the battery box.

[0014] Preferably, the driving mechanism includes a first driving motor, a driving wheel and a driving chain, the driving wheel is rotatably connected to the robotic arm, the first driving motor is connected to the driving wheel, the driving chain bypasses the driving wheel and is connected to the second bearing part, and the first driving motor drives the second bearing part to move via the driving wheel and the driving chain to adjust the angle of the battery box.

[0015] Preferably, it further comprises a clamping mechanism for clamping the battery box, and after the robot arm moves the battery box to a preset position through the connecting assembly, the clamping mechanism clamps the battery box to fix the battery box.

[0016] Preferably, the clamping mechanism comprises:

[0017] A second drive motor includes a rotating disk connected to an output shaft;

[0018] A connecting rod, hinged to the rotating disk;

[0019] The clamping arm is hinged to the frame, and the end portion is hinged to the connecting rod. When the second driving motor drives the turntable to rotate, the turntable drives the clamping arm to rotate through the connecting rod to clamp the battery box.

[0020] The present disclosure also provides a battery replacement method, comprising the following steps:

[0021] The mechanical arm moves toward the battery box until the first load-bearing portion and the second load-bearing portion of the connecting assembly are located below the crossbar of the battery box;

[0022] The mechanical arm moves upward until the latch is inserted into the socket, wherein one of the latch and the socket is provided on the first bearing portion, and the other is provided on the crossbar;

[0023] The driving mechanism drives the second bearing portion to move relative to the mechanical arm, so that the battery box rotates around the latch to adjust the angle of the battery box.

[0024] Preferably, it also includes:

[0025] After the robot arm moves the battery box to a preset position through the first bearing portion and the second bearing portion of the connecting assembly, the clamping mechanism clamps the battery box to fix the battery box.

[0026] Compared with the prior art, the above-mentioned battery exchange equipment and battery exchange method are provided with a connecting component on the robotic arm, and the connecting component is provided with a first bearing part. When the robotic arm moves toward the battery box until the first bearing part is located below the cross bar of the bracket of the battery box, the robotic arm drives the first bearing part of the connecting component to move upward so as to lift the battery box. In the process of docking with the battery box bracket, it is no longer necessary to adjust the posture of the battery exchange equipment and can hook the cross bar of the battery box bracket, so that the battery box can be quickly docked, thereby improving the battery exchange efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the specific implementation methods, the drawings required for use in the description of the implementation methods will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] Figure 1 It is a structural diagram of the battery replacement equipment.

[0029] Figure 2 It is a structural diagram of the battery box.

[0030] Figure 3 It is a schematic diagram of the structure of the robotic arm and connecting components.

[0031] Figure 4 Schematic diagram of the structure of the second bearing part.

[0032] Figure 5 It is a schematic structural diagram of the driving mechanism in another embodiment.

[0033] Figure 6 It is a structural diagram of the battery replacement equipment moving the battery box to the designated location.

[0034] Figure 7 It is a structural schematic diagram of the clamping mechanism.

[0035] Main component symbols

[0036]

[0037]

[0038] The following specific implementations will further illustrate the present disclosure in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned purposes, features and advantages of the present disclosure, the present disclosure is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth in order to fully understand the present disclosure, and the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which the present disclosure belongs. The terms used in the specification herein are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure.

[0041] In each embodiment, for the convenience of description and not to limit the present disclosure, the term "connection" used in the patent specification and claims of the present disclosure is not limited to physical or mechanical connection, but may include electrical connection, whether direct or indirect. "Up", "down", "below", "left", "right", etc. are only used to indicate relative position relationship. When the absolute position of the described object changes, the relative position relationship also changes accordingly.

[0042] Figure 1 Schematic diagram of the structure of the battery replacement device 10. Figure 1 As shown, the battery exchange device 10 includes a base and a connecting component 13 connected to the base, the connecting component 13 is used to dock the battery box 20, and the connecting component 13 is connected to the base, so that the base can move the battery box 20 through the connecting component 13 to replace the battery box 20 for the vehicle.

[0043] Figure 2 2 is a schematic diagram of the structure of the battery box 20. Figure 2 As shown, a bracket 21 is provided on the top of the battery box 20 for docking with the battery exchange device 10. The bracket 21 is generally a frame-like structure, including side beams extending along the length direction of the battery box 20 and cross bars 211 connected to the side beams on both sides. In this embodiment, there are two cross bars 211, and there is a preset distance between the cross bars 211, so that the battery exchange device 10 can be connected to the two cross bars 211 at the same time to balance the stress condition of the cross bars 211. In addition, one of the cross bars 211 is also provided with a socket 212 to fix the battery box 20 to prevent the battery box 20 from detaching from the battery exchange device 10 during movement.

[0044] The substrate may be in various forms according to the application of the battery exchange device 10. In some embodiments, the substrate is located above the battery box 20 and can move along the XYZ direction, so that the connecting assembly 13 can move the battery box 20 following the movement of the substrate.

[0045] As an example, Figure 1 As shown, in this embodiment, the base includes a frame 11 and a mechanical arm 12. The frame 11 is generally in the shape of a "door", and can move in a vertical direction or a horizontal direction under external force to move the battery box 20. The mechanical arm 12 is connected to the upper part of the frame 11 and can move along the vertical direction or the horizontal direction. Figure 1 Horizontal telescoping is shown.

[0046] Figure 3 Schematic diagram of the structure of the robot arm 12 and the connecting component 13. Figure 3 As shown, the robot arm 12 is used to move the battery box 20. In this embodiment, the robot arm 12 is connected to the frame 11 so that it can move with the frame 11. In some embodiments, the robot arm 12 includes a telescopic mechanism 121 and a base plate. The telescopic mechanism 121 is connected to the frame 11 so that the robot arm 12 can be extended from the frame 11 or retracted to the frame 11. The telescopic mechanism 121 of the robot arm 12 can be implemented in a variety of ways. For example, a telescopic structure can be realized by using a telescopic cylinder, a ball screw, a linear motor, etc., but those skilled in the art can also use other methods to realize the telescopic function of the robot arm 12, and this application does not limit this.

[0047] The base plate 122 is generally a flat plate structure, and is movably connected to the telescopic mechanism 121. For example, it can be movably connected to the end of the telescopic mechanism 121 by a slide groove-slider structure, a ball screw structure, etc., and can be driven by the driving mechanism of the robot arm 12 or an independent driving mechanism (such as a linear motor, a gear-rack mechanism, a ball screw mechanism, etc.) to move along the telescopic mechanism 121 within the moving stroke range, thereby increasing the stroke of the connecting component.

[0048] Please continue reading Figure 3 The connection assembly 13 is used for docking the battery box 20. The connection assembly 13 includes a driving mechanism 131, a first bearing portion 132 and a second bearing portion 133.

[0049] The width of the first bearing portion 132 and the second bearing portion 133 is smaller than the width of the bracket 21 of the battery box 20. One end of the first bearing portion 132 and the second bearing portion 133 is fixedly connected to the bottom surface of the bottom plate 122, and the other end is toward the end direction of the robot arm 12 (i.e. Figure 1The first bearing portion 132 and the second bearing portion 133 extend in the horizontal direction shown in the figure, so that the first bearing portion 132 and the second bearing portion 133 form an "L"-shaped structure. When the robot arm 12 moves toward the battery box 20 until the first bearing portion 132 and the second bearing portion 133 are located below the crossbar 211 of the bracket 21 of the battery box 20, the first bearing portion 132 and the second bearing portion 133 move upward with the robot arm 12, and respectively lift the crossbar 211 to move the battery box 20.

[0050] Further, in order to prevent the battery box 20 from being separated from the connecting assembly 13 during movement, in some preferred embodiments, the connecting assembly 13 further includes a latch 1321 and a socket 212. The latch 1321 extends in the vertical direction and corresponds to the socket 212 of the crossbar 211. When the first bearing portion 132 is located below the crossbar 211, the first bearing portion 132 moves upward following the mechanical arm 12 so that the latch 1321 is plugged into the socket 212, thereby preventing the battery box 20 from being separated from the first bearing portion 132 during movement. In some other embodiments, the latch 1321 can also be provided on the crossbar 211 of the battery box 20, and correspondingly, the socket 212 is provided on the first bearing portion 132 and corresponds to the latch 1321. When the first bearing part 132 is located below the cross bar 211, the first bearing part 132 moves upward with the robot arm 12 so that the socket 212 is sleeved on the latch 1321, which can also prevent the battery box 20 from detaching from the first bearing part 132 during movement.

[0051] When the battery box 20 needs to be moved, the robot arm 12 is extended toward the battery box 20 until the connecting component 13 is located above the battery box 20, and the height of the robot arm 12 is adjusted so that the height of the first bearing part 132 and the second bearing part 133 of the connecting component 13 at the end of the robot arm 12 is lower than the height of the cross bar 211 of the bracket 21 of the battery box 20. Then the robot arm 12 continues to extend and approaches the bracket 21 of the battery box 20 until the first bearing part 132 and the second bearing part 133 are respectively located below the cross bar 211 of the battery box 20.

[0052] Next, the robot arm 12 moves upward, so that the first bearing portion 132 and the second bearing portion 133 respectively bear the cross bar 211 of the battery box 20 from below the cross bar 211, thereby realizing the function of hooking the battery box 20. Since the width of the connecting portion 131 is smaller than the width of the bracket 21, the robot arm 12 can realize the connection with the battery box 20 without adjusting the posture of the first bearing portion 132 and the second bearing portion 133 again. During the upward movement of the first bearing portion 132, the latch 1321 is inserted into the insertion hole 212 of the cross bar 211, thereby preventing the battery box 20 from being separated from the first bearing portion 132 during the movement.

[0053] Figure 4 1 is a schematic diagram of the structure of the second carrying portion 133. In order to facilitate the adjustment of the angle of the battery box 20, so as to facilitate the transportation of the battery box 20 or release the battery box 20 after moving the battery box 20 to a preset position, the angle of the battery box 20 needs to be adjusted. Figure 4 As shown, the connection assembly further includes a driving mechanism 131, which is used to drive the second bearing part 133 to move in a direction perpendicular to the extension direction of the mechanical arm 12, so as to adjust the angle of the battery box 20. Specifically, the driving mechanism 131 is connected to the mechanical arm, and is used to drive the battery box 20 to rotate around the latch 1321 to adjust the angle of the battery box 20 when the first bearing part 132 and the second bearing part 133 hold up the crossbar 211 of the battery box 20.

[0054] In order to facilitate the rotation of the battery box 20, Figure 4 In the illustrated embodiment, the second bearing portion 133 is movably connected to the bottom plate 122 of the robot arm 12, for example, it can be movably connected to the bottom plate 122 via a slider-rail structure, so that the second bearing portion 133 can move in a direction perpendicular to the telescopic direction of the robot arm 12 (i.e., the width direction of the battery box 20). The driving mechanism 131 is connected to the second bearing portion 133 to drive the second bearing portion 133 to move along the width direction of the battery box 20. Since the second bearing portion 133 supports the cross bar 211 of the bracket 21 of the battery box 20, the angle of the battery box 20 can be adjusted by moving the second bearing portion 133. Those skilled in the art will appreciate that the driving mechanism 131 can be implemented in a variety of forms or structures. As an example, in Figure 4 In the illustrated embodiment, the driving mechanism 131 includes a first driving motor 1311, a driving wheel 1312, and a driving chain 1313. The driving wheel 1312 is rotatably connected to the bottom plate 122, the first driving motor 1311 is connected to the driving wheel 1312, the driving chain 1313 bypasses the driving wheel 1312 and is connected to the second bearing portion 133, the first driving motor 1311 can drive the driving wheel 1312 to rotate, and the driving wheel 1312 drives the driving chain 1313 to move when it rotates. Since the second bearing portion 133 is connected to the driving chain 1313, the driving chain 1313 can drive the second bearing portion 133 to move when it moves, so that the battery box 20 can be driven to rotate around the latch 1321 to adjust the angle of the battery box 20.

[0055] However, the driving mechanism 131 may also be of other forms and structures. Figure 5 is a schematic diagram of the structure of the driving mechanism 131 in another embodiment, such as Figure 5As shown, the second bearing portion 133 is fixedly connected to the bottom plate 122 and extends toward the end of the robot arm 12. The driving mechanism 131 may include a first driving motor 1311 and a driving rod 1314, wherein the driving rod 1314 extends along the width direction of the battery box 20 and is connected to the first driving motor 1311. The driving rod 1314 can move along the width direction of the battery box 20 driven by the first driving motor 1311, thereby pushing the battery box 20 to rotate during the movement. However, those skilled in the art may also adopt driving mechanisms 131 of other structures and methods, and the present application is not limited thereto.

[0056] During use, when the robotic arm 12 drives the connecting assembly 13 to move upward, the pin 1321 is inserted into the socket 212 of the cross bar 211 of the bracket 21 of the battery box 20, thereby preventing the battery box 20 from detaching from the connecting assembly 13 during movement, further improving the safety of the battery exchange device 10.

[0057] Then, the robot arm 12 moves the battery box 20 and moves the battery box 20 to a predetermined position. In this embodiment, in order to move the battery box 20 to the vehicle or the charging rack, the robot arm 12 starts the retraction action after the connecting component 13 hooks the battery box 20, so that the battery box 20 moves into the rack 11 to facilitate the movement of the battery box 20. The inventor found in practice that since the connecting component 13 hooks the battery box 20, the battery box 20 will shake during the movement of the battery exchange device 10.

[0058] Figure 6 Schematic diagram of the structure when the battery replacement device 10 moves the battery box 20 to a specified position. Figure 6 As shown, in some preferred embodiments, the battery exchange device 10 also includes a clamping mechanism 14, which is used to clamp the battery box 20 when the battery box 20 is moved to a preset position (for example, within the rack 11 in this embodiment) to reduce the degree of shaking of the battery box 20 during the process of the battery exchange device 10 carrying the battery box 20.

[0059] Figure 7 Schematic diagram of the structure of the clamping mechanism 14. Figure 6 and Figure 7As shown, as an example, the clamping mechanism 14 includes a second drive motor 141, a turntable 142, a connecting rod 143 and a clamping arm 144. The second drive motor 141 is connected to the bottom of the frame 11, and the turntable 142 is connected to the output shaft of the second drive motor 141, and can be rotated under the drive of the second drive motor 141. There are two connecting rods 143, and the ends are hinged to the turntable 142. There are two clamping arms 144, which are respectively located on both sides of the battery box 20. The middle part of the clamping arm 144 is hinged to the frame 11, and one end is hinged to the connecting rod 143, and the other end is rotatably connected to the roller 145. When the battery box 20 moves into the rack 11, the second drive motor 141 drives the turntable 142 to rotate, and pulls the clamping arm 144 to swing through the connecting rod 143 to clamp the two sides of the battery box 20, thereby reducing the shaking of the battery box 20 and improving the stability of the battery box 20 during the movement of the battery exchange device 10. However, those skilled in the art understand that the structure of the clamping mechanism 14 can be various, for example, it can include telescopic rods arranged on both sides of the rack 11, and when the battery box 20 is located in the rack 11, the telescopic rods extend to abut against the two sides of the battery box 20 to achieve the function of fixing the battery box 20.

[0060] The working process of the above-mentioned battery replacement device 10 is described in detail below.

[0061] When the battery box 20 needs to be moved, the battery exchange device 10 moves to a position corresponding to the battery box 20 , and then the robotic arm 12 extends toward the battery box 20 until the connecting assembly 13 is located above the bracket 21 of the battery box 20 .

[0062] Then, the robot arm 12 moves in the vertical direction and / or extends, so that the connecting assembly 13 moves following the bottom plate 122 of the robot arm 12 until the connecting portion 131 extends under the cross bar 211 to hook the cross bar 211 of the battery box 20 .

[0063] Next, the robot arm 12 moves upward, so that the connection part 131 contacts the cross bar 211 of the battery box 20 and the latch 1321 is plugged into the socket 212 of the cross bar 211. As the robot arm 12 continues to move upward, the robot arm 12 hooks the battery box 20 through the connection assembly 13 and moves upward. Since the width of the first bearing part 132 and the second bearing part 133 is smaller than the width of the bracket 21 of the battery box 20, the first bearing part 132 and the second bearing part 133 have a large space to move to the bottom of the cross bar 211, thereby avoiding adjusting the posture of the first bearing part 132 or the second bearing part 133 during docking, effectively improving the battery replacement efficiency.

[0064] When the robot arm 12 moves upward, the latch 1321 moves upward with the first bearing portion 132 to be inserted into the insertion hole 212 of the crossbar 211. Then, the driving mechanism 131 pulls the second bearing portion 133 to move, thereby driving the battery box 20 to rotate around the latch 1321 to adjust the angle of the battery box 20.

[0065] Next, the robot arm 12 begins to retract until the battery box 20 moves to a preset position in the frame 11. Preferably, the preset position may be the internal space of the frame 11. Then, the second drive motor 141 of the clamping mechanism 14 drives the clamping arm 144 to rotate to clamp both sides of the battery box 20, thereby reducing the shaking of the battery box 20 during the movement of the battery exchange device 10.

[0066] The above-mentioned battery exchange device 10 and battery exchange method are implemented by setting a connecting component 13 on the robot arm 12, and the connecting component 13 is provided with a first load-bearing part 132 and a second load-bearing part 133. When the robot arm 12 moves toward the battery box 20 and the first load-bearing part 132 and the second load-bearing part 133 are located below the cross bar 211 of the battery box 20 bracket 21, the robot arm 12 drives the first load-bearing part 132 and the second load-bearing part 133 to move upward so as to lift the battery box 20. In the process of docking with the battery box 20 bracket 21, it is no longer necessary to adjust the extension angle of the robot arm 12 and the posture of the connecting component 13, and the cross bar 211 of the battery box 20 bracket 21 can be hooked, so that the battery box 20 can be quickly docked, thereby improving the battery exchange efficiency.

[0067] In the several specific embodiments provided in the present disclosure, it is obvious to those skilled in the art that the present disclosure is not limited to the details of the above exemplary embodiments, and that the present disclosure can be implemented in other specific forms without departing from the spirit or basic features of the present disclosure. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive, and the scope of the present disclosure is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present disclosure. In addition, it is obvious that the word "comprising" does not exclude other units or steps, and the singular does not exclude the plural. The words first, second, etc. are used to indicate names, and do not indicate any particular order.

[0068] The above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure is described in detail with reference to the above preferred embodiments, those skilled in the art should understand that the technical solution of the present disclosure can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present disclosure.

Claims

1. A battery replacement device, It is characterized in that include: A base body, comprising a frame and a retractable mechanical arm, wherein the mechanical arm is connected to the frame; A connecting assembly, comprising a first bearing portion connected to the base, wherein when the mechanical arm moves toward the battery box until the first bearing portion is located below a crossbar of a bracket of the battery box, the first bearing portion moves upward following the base to move the battery box by lifting the crossbar; The connecting assembly further includes a second bearing portion, the second bearing portion is connected to the mechanical arm, and the first bearing portion and the second bearing portion extend toward the end of the mechanical arm to bear the crossbar of the battery box; The connecting assembly further comprises a latch and a socket corresponding to the latch, one of the latch and the socket being arranged on the first bearing part, and the other being arranged on the crossbar, and when the first bearing part is located below the crossbar, the first bearing part moves upward following the mechanical arm so that the latch is inserted into the socket of the crossbar; The connecting assembly further comprises a driving mechanism, which is used to drive the battery box to rotate around the latch to adjust the angle of the battery box when the first bearing part and the second bearing part hold up the crossbar of the battery box; The second carrying part is movably connected to the mechanical arm, and the driving mechanism is connected to the second carrying part to drive the second carrying part to move and adjust the angle of the battery box; The mechanical arm comprises a telescopic mechanism and a bottom plate, wherein the telescopic mechanism is connected to a frame, the bottom plate is connected to the telescopic mechanism, and the first bearing part and the second bearing part are connected to the bottom surface of the bottom plate.

2. The battery replacement device according to claim 1, It is characterized in that The driving mechanism includes a first driving motor, a driving wheel and a driving chain, the driving wheel is rotatably connected to the robotic arm, the first driving motor is connected to the driving wheel, the driving chain bypasses the driving wheel and is connected to the second bearing part, and the first driving motor drives the second bearing part to move via the driving wheel and the driving chain to adjust the angle of the battery box.

3. The battery replacement device according to any one of claims 1 to 2, It is characterized in that It also includes a clamping mechanism for clamping the battery box. After the robot arm moves the battery box to a preset position through the connecting assembly, the clamping mechanism clamps the battery box to fix the battery box.

4. The battery replacement device according to claim 3, It is characterized in that The clamping mechanism comprises: A second drive motor includes a rotating disk connected to an output shaft; A connecting rod, hinged to the rotating disk; The clamping arm is hinged to the frame, and the end portion is hinged to the connecting rod. When the second driving motor drives the turntable to rotate, the turntable drives the clamping arm to rotate through the connecting rod to clamp the battery box.

5. A battery replacement method, It is characterized in that Applied to a battery swapping device, the battery swapping device comprises a base and a connecting assembly, the base comprises a frame and a mechanical arm, and the mechanical arm is connected to the frame; The connecting assembly comprises: a first bearing portion connected to the base; The connecting assembly further includes a second bearing portion, wherein the second bearing portion is connected to the mechanical arm; The connecting assembly further comprises a latch and a socket corresponding to the latch, one of the latch and the socket being arranged on the first bearing part, and the other being arranged on the crossbar of the bracket of the battery box, and when the first bearing part is located below the crossbar, the first bearing part moves upward following the mechanical arm so that the latch is inserted into the socket of the crossbar; The connecting assembly further includes a driving mechanism; the second bearing part is movably connected to the mechanical arm, and the driving mechanism is connected to the second bearing part to drive the second bearing part to move and adjust the angle of the battery box; The battery replacement method comprises the following steps: The mechanical arm moves toward the battery box until the first load-bearing portion and the second load-bearing portion of the connecting assembly are located below the crossbar of the battery box; The mechanical arm moves upward until the latch is inserted into the socket, wherein one of the latch and the socket is provided on the first bearing portion, and the other is provided on the crossbar; The driving mechanism drives the second bearing portion to move relative to the mechanical arm, so that the battery box rotates around the latch to adjust the angle of the battery box.

6. The battery replacement method according to claim 5, It is characterized in that Also includes: After the robot arm moves the battery box to a preset position through the first bearing portion and the second bearing portion of the connecting assembly, the clamping mechanism clamps the battery box to fix the battery box.

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