Battery lock and lock method

Abstract

The present application discloses a battery lock and a locking method. The battery lock includes: a lock head; a lock body, including a connecting member and a rotating member, wherein the connecting member is threadedly connected to the rotating member; when the connecting member is engaged with the locking head, the rotating member rotates relative to the connecting member, so that the rotating member pulls the locking head through the connecting member to move toward each other to lock the battery box to the vehicle body. In the above-mentioned battery lock and locking method, before locking the battery box, the connecting member and the rotating member are connected by threads, and after the connecting member is engaged with the locking head, the rotating member rotates relative to the connecting member, so that the connecting member pulls the locking head, thereby locking the battery box to the vehicle body. In the process of locking the battery box, there is no need to screw in or out during the threaded mating process, so as to avoid the problem of thread wear due to inaccurate thread head position when the threads are engaged.

Description

Technical Field

[0001] The present invention belongs to the field of electric vehicle battery replacement equipment, and in particular to a battery lock and a locking 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] At present, the battery box of an electric vehicle needs to be firmly locked in the load-bearing area of ​​the electric vehicle, and the battery box needs to be unlocked or locked to the electric vehicle conveniently and quickly during automatic battery replacement.

[0004] The existing thread locking mechanism achieves the locking of the battery box by docking and screwing the threads. When the threads are docked and screwed, there may be problems with the thread head position being inaccurate, resulting in thread wear or even sticking, making it impossible to screw normally, resulting in locking failure. Summary of the invention

[0005] In view of the above, it is necessary to provide a battery lock and a locking method, aiming to solve the problem of thread wear of existing battery locks when the threads are connected.

[0006] The present disclosure provides a battery lock for locking a battery box to a vehicle body, comprising:

[0007] Lock head;

[0008] The lock body comprises a connecting piece and a rotating piece, wherein the connecting piece is threadedly connected to the rotating piece;

[0009] After the connecting member is clamped on the locking head, the rotating member rotates relative to the connecting member, so that the connecting member pulls the locking head to lock the battery box to the vehicle body.

[0010] Preferably, it further comprises a first locking member and a second locking member, wherein one of the first locking member and the second locking member is connected to the lock head, and the other is connected to the connecting member, and the connecting member is connected to the lock head by the first locking member being clamped to the second locking member.

[0011] Preferably, the first locking member includes a bearing portion and an entry channel; the second locking member includes a locking rod and a first locking tongue protruding in a radial direction of the locking rod;

[0012] When the first locking member and the second locking member move toward each other, the locking rod moves axially along the entry channel until the first locking tongue passes over the bearing surface of the bearing part; the rotating member is rotated to drive the connecting member to rotate, so that the first locking tongue moves in a circumferential direction relative to the bearing part until it at least partially overlaps with the bearing surface of the bearing part in the axial direction to clamp the locking rod to the first locking member.

[0013] Preferably, the second locking member further comprises a second locking tongue extending in the radial direction of the locking rod;

[0014] The first locking member further includes a stop portion, and when the second locking tongue abuts against the stop portion, the rotating member rotates relative to the connecting member.

[0015] Preferably, the bearing portion is provided with a groove corresponding to the first locking tongue, and the first locking tongue abuts against the bearing portion in the groove.

[0016] Preferably, the lock body further comprises a mounting base and a plug-in mechanism, the rotating member is rotatably connected to the mounting base, and the plug-in mechanism is used to abut against the connecting member to limit the rotation of the connecting member.

[0017] Preferably, the rotating member comprises a cavity, a side wall of the cavity is provided with an internal thread, the connecting member is provided with an external thread, and the rotating member and the connecting member are threadedly connected by meshing the internal thread and the external thread.

[0018] Preferably, the connecting member comprises a cavity, a side wall of the cavity is provided with an internal thread, an outer wall of the rotating member is provided with an external thread, and the rotating member and the connecting member are threadedly connected by meshing the internal thread and the external thread.

[0019] A locking method for locking a battery box to a vehicle body comprises the following steps:

[0020] When the lock head and the lock body move toward each other until the connecting piece of the lock body is engaged with the lock head, the driving rotating piece rotates relative to the connecting piece;

[0021] The connecting member pulls the lock head to lock the battery box to the vehicle body.

[0022] Preferably, the connecting piece of the lock body is connected to the lock head by clamping:

[0023] When the first locking member and the second locking member move toward each other, the locking rod of the second locking member moves axially along the entry channel of the first locking member until the first locking tongue of the locking rod passes over the bearing surface of the bearing portion of the first locking member;

[0024] Rotating the rotating member to drive the connecting member to rotate, so that the first locking tongue of the second locking member moves relative to the bearing portion in a circumferential direction until the first locking tongue at least partially overlaps with the bearing surface of the bearing portion in the axial direction, so that the first locking tongue can abut against the bearing surface to clamp the locking rod to the first locking member; and

[0025] The connecting member pulling the lock head comprises:

[0026] When the second locking tongue of the second locking member abuts against the stopping portion of the first locking member, the rotating member rotates relative to the connecting member until the first locking tongue abuts against the bearing surface to pull the lock head; wherein, one of the first locking member and the second locking member is connected to the lock head, and the other is connected to the connecting member, and the connecting member is clamped to the lock head by the first locking member being clamped to the second locking member.

[0027] Compared with the prior art, the battery lock and locking method described above connect the connecting member and the rotating member through threads before locking the battery box. After the connecting member is engaged with the locking head, the rotating member rotates relative to the connecting member, so that the connecting member pulls the locking head, thereby locking the battery box to the vehicle body. In the process of locking the battery box, there is no need to screw in or out during the thread matching process, which avoids the problem of thread wear due to inaccurate thread head position when the threads are connected. The battery lock and locking method described above are connected by a clamping method, which can tolerate larger connection errors, and has a simple structure and low production and maintenance costs.

[0028] Moreover, the above-mentioned battery lock and locking method rotate the rotating member relative to the connecting member. Since the diameter of the connecting member is small, the diameter of the thread between the connecting member and the rotating member is also small, so that the rotating member can be driven to rotate with a smaller torque, which is particularly important when the space of the battery lock is limited. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 It is a structural diagram of embodiment 1 of the battery lock in the battery replacement system.

[0031] Figure 2 It is a schematic structural diagram of embodiment 1 of the battery lock.

[0032] Figure 3It is a schematic diagram of the structure of the battery lock in a disassembled state.

[0033] Figure 4 It is a structural schematic diagram of the first locking member of the lock.

[0034] Figure 5 yes Figure 4 Schematic diagram of the cross section at VV in the middle.

[0035] Figure 6 It is a schematic diagram of the structure of the lock body in a disassembled state.

[0036] Figure 7 It is a cross-sectional schematic diagram of a battery lock.

[0037] Figure 8 It is a schematic structural diagram of a locking rod and a rotating member in another embodiment.

[0038] Fig. 9 yes Figure 7 A partial enlarged view of point A in the middle.

[0039] Fig.10 It is a structural diagram of embodiment 2 of the battery lock in the battery replacement system.

[0040] Fig.11 It is a schematic structural diagram of embodiment 2 of the battery lock.

[0041] Main component symbols

[0042]

[0043]

[0044] The following specific implementations will further illustrate the present disclosure in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0045] 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.

[0046] 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.

[0047] 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.

[0048] Example 1

[0049] Figure 1 is a schematic diagram of the structure of the embodiment 1 of the battery lock in the battery replacement system, Figure 2 is a schematic structural diagram of embodiment 1 of the battery lock, Figure 3 This is a schematic diagram of the battery lock in a disassembled state. Figure 1-3 As shown, the battery exchange device 1 locks the battery box 2 to the vehicle body 3 through a battery lock. The battery lock includes a lock head 10, a lock body 30, a first locking member, and a second locking member. As an example, the lock head 10 is installed on the vehicle body 3, and the lock body 30 is installed on the battery box 2, but the present embodiment is not limited to this. The lock head 10 can also be connected to the battery box 2, and the lock body 30 is installed on the vehicle body 3. Those skilled in the art can set the installation positions of the lock head 10 and the lock body 30 as needed. One of the first locking member and the second locking member is connected to the lock head 10, and the other is connected to the lock body 30. The lock body 30 is connected to the second locking member through the first locking member, so that the lock head 10 and the lock body 30 are connected.

[0050] When the battery box 2 needs to be placed on the vehicle body, the battery exchange device 1 lifts the battery box 2 so that the battery box 2 moves upward until the lock head 10 and the lock body 30 are engaged, so as to lock the battery box 2 to the vehicle body 3 and prevent the battery box 2 from detaching from the vehicle body 3 or shaking. In some other embodiments, the battery box 2 may move downward until the lock head 10 and the lock body 30 are engaged, that is, the lock head 10 may move toward the lock body 30 when the lock body 30 is stationary; however, the lock body 30 may move toward the lock head 10 when the lock head 10 is stationary. The present application does not restrict the movement of the lock head 10 and the lock body 30.

[0051] Figure 4 is a schematic structural diagram of the first locking member 20 of the lock, Figure 5 yes Figure 4 Schematic diagram of the cross section at VV in FIG. Figure 4 and Figure 5 As shown, the lock cylinder 10 includes a first locking member 20 , and the first locking member 20 can be installed on the vehicle body 3 .

[0052] In this embodiment, the first locking member 20 is generally cylindrical and includes an entry channel 21 extending along the axial direction, a bearing portion 22 and a stopper portion 23. The entry channel 21 extends along the axial direction of the first locking member 20 and corresponds to the shape of the locking rod 32 so that the locking rod 32 can move along the axial direction. Figure 5 The direction of VV shown moves in the entry channel 21. In this embodiment, the entry channel 21 is a shaped hole with a long strip cross section.

[0053] The bearing portion 22 is used to bear the first locking tongue. In the present embodiment, the bearing portion 22 is a block-shaped structure adjacent to the entrance channel 21, and includes a bearing surface for bearing the first locking tongue. The bearing surface may be an end surface of the bearing portion 22, and may be one of two end surfaces along the axial direction depending on the area where the first locking tongue abuts the bearing portion 22. The bearing surface of the bearing portion 22 is provided with a groove 221, and the shape of the groove 221 corresponds to the shape of the first locking tongue. In the present embodiment, the first locking tongue is a cylindrical structure, and the shape of the groove 221 is an arc, and the arc-shaped groove 221 just accommodates the first locking tongue. When the second locking tongue abuts against the stop portion 23 to lock the battery box 2, the first locking tongue abuts in the groove 221.

[0054] The stopper 23 is used to abut against the second locking tongue to block the rotation of the locking rod 32. In this embodiment, the stopper 23 has a side surface along the vertical direction, and when the second locking tongue abuts against the side surface, the rotation of the locking rod 32 is blocked.

[0055] In this embodiment, the bearing portion 22 and the stop portion 23 are respectively a pair, which are arranged in a circumferential direction at the center position of the entry channel 21, and may have a certain interval in the circumferential direction. After the locking rod 32 enters the first locking member 20 along the entry channel 21, it rotates a preset angle to abut the stop surface of the stop portion 23. When the first locking tongue abuts the bearing portion 22, the first locking tongue is located in the groove 221 of the bearing portion 22, so that the locking rod 32 and the first locking member 20 are locked. After the locking rod 32 rotates in the opposite direction by a preset angle, the first locking tongue is located at the position of the entry channel 21, so that the locking rod 32 can be separated from the first locking member 20 along the entry channel 21.

[0056] Figure 6 is a schematic diagram of the structure of the lock body 30 in a disassembled state, Figure 7 Figure 1 is a cross-sectional diagram of a battery lock. Figure 6 and Figure 7 As shown, the lock body 30 can be installed on the battery box 2 to be locked to the lock head 10.

[0057] The lock body 30 includes a mounting base 33, a second locking member, a connecting member 36, a rotating member 34 and a plug-in mechanism 35. The second locking member includes a locking rod 32, a first locking tongue and a second locking tongue. The first locking tongue is used to hook on the first locking member 20, and the second locking tongue is used to snap on the first locking member 20 to prevent the locking rod 32 from rotating relative to the first locking member 20. In some embodiments, the first locking tongue and the second locking tongue are located at different positions of the locking rod 32, and each plays a role of hooking and snapping. However, those skilled in the art understand that by setting appropriate positions, the first locking tongue and the second locking tongue can also be realized by the same component. As an example, in this embodiment, the first locking tongue and the second locking tongue can be the same component, that is, Figure 6 and Figure 7 The lock tongue 321 shown protrudes from the lock rod 32 in the radial direction of the lock rod 32 and is connected to the lock rod 32 in a straight line. The first lock tongue and the second lock tongue are uniformly referred to as the lock tongue 321. In this embodiment, the first lock tongue and the second lock tongue are arranged at the top of the lock rod 32 and protrude in the radial direction of the lock rod 32, so that the first locking member forms a "T"-shaped structure, but the lock tongue can also be a cross or plum blossom shape or other structures.

[0058] The mounting base 33 is used to mount the lock body 30, and is provided with a through hole. The lock rod 32 and the connecting member 36 pass through the through hole, with one end protruding from one side of the mounting base 33 and the other end protruding from the other side of the mounting base 33. In this embodiment, the rotating member 34 is rotatably connected to the mounting base 33. Specifically, the mounting base 33 also includes a connecting piece 331, and the connecting piece 331 and the mounting base 33 form a cavity 332. The edge of the connecting piece 331 protrudes from the through hole of the mounting base 33 in the radial direction, so that the cavity 332 forms an arc-shaped groove structure with a side opening.

[0059] The rotating member 34 is generally cylindrical in structure, and a boss 341 is provided at the end thereof. The boss 341 extends in the radial direction of the rotating member 34 and is provided in the cavity 332 formed by the connecting piece 331, so that the rotating member 34 is clamped to the mounting base 33 and can rotate relative to the mounting base 33.

[0060] The rotating member 34 is connected to the connecting member 36 by a thread. In this embodiment, the connecting member 36 is in the shape of a rod and is an integral structure with the locking rod 32. The locking rod 32 is located at the end of the connecting member 36. Figure 7 In the illustrated embodiment, the rotating member 34 includes a cavity 323, the side wall of the cavity 323 is provided with an internal thread, the bottom of the locking rod 32 is provided with an external thread, and the rotating member 34 and the connecting member 36 are threadedly connected by meshing the internal thread and the external thread. Figure 8It is a schematic diagram of the structure of the locking rod 32 and the rotating member 34 under another embodiment. In some other embodiments, the connecting member 36 includes a cavity 323, the side wall of the cavity 323 is provided with an internal thread, the outer wall of the rotating member 34 is provided with an external thread, and the rotating member 34 and the connecting member 36 are threadedly connected by meshing the internal thread and the external thread.

[0061] The bottom of the rotating member 34 includes a connecting portion 342 for connecting to the driving mechanism. In this embodiment, the cross section of the connecting portion 342 is polygonal and corresponds to the inner diameter of the driving rod 31 of the driving mechanism, so that the driving mechanism is sleeved on the connecting portion 342 through the driving rod 31 to drive the rotating member 34 to rotate through the connecting portion 342. In other embodiments, the rotating member 34 can also be directly fixedly connected to the driving mechanism.

[0062] Fig. 9 yes Figure 7 A partial enlarged view of the middle A. Figure 7 and Fig. 9 As shown, the plug-in mechanism 35 is used to be plugged into the plug hole 322 to limit the rotation of the rotating member 34 or the connecting member 36 (which can also be the locking rod 32). In this embodiment, taking the connecting member 36 as an example, the connecting member 36 is provided with a plug hole 322 (which can also be a groove), and the plug-in mechanism 35 includes a control rod 352, a plug rod 351, a connecting ball 3512, a first spring 3521 and a second spring 3511. The plug rod 351 is movably connected to the mounting base 33. In this embodiment, the mounting base 33 is provided with a through hole extending in the radial direction toward the rotating member 34, and the plug rod 351 is arranged in the through hole, so that the plug rod 351 can move along the length direction of the through hole, plugged into the plug hole 322 of the connecting member 36, or disengaged from the plug hole 322 of the connecting member 36. The second spring 3511 is sleeved on the plug rod 351, and one end of the second spring 3511 abuts against the side wall of the through hole of the mounting base 33, and the other end abuts against the plug rod 351. The second spring 3511 is compressed when the plug rod 351 is inserted into the socket 322, so that the plug rod 351 can be retracted under the action of the second spring 3511 when the plug rod 351 needs to be removed from the socket 322. In addition, a connecting ball 3512 is also provided at the end of the plug rod 351 away from the plug socket 322, and the connecting ball 3512 is located in the through hole of the mounting base 33 and abuts against the control rod 352. The control rod 352 is movably connected to the mounting base 33, and the control rod 352 is provided with a recessed area recessed in the radial direction. One end of the first spring 3521 abuts against the mounting base 33, and the other end abuts against the control rod 352.

[0063] In a normal state, the circumferential surface of the control rod 352 abuts against the connecting ball 3512, so that the plug rod 351 is inserted into the insertion hole 322, which prevents the connection member 36 from rotating. When the battery lock needs to be locked or unlocked, the control rod 352 is squeezed to move the control rod 352, and the recessed area of ​​the control rod 352 moves to a position corresponding to the plug rod 351, so that the plug rod 351 retracts under the action of the second spring 3511 and disengages from the insertion hole 322 of the connection member 36, completing the unlocking process. After the force on the control rod 352 is released, the control rod 352 moves under the action of the first spring 3521, so that the side wall of the recessed area pushes against the connecting ball 3512, and the plug rod 351 is pushed by the connecting ball 3512 to move to the insertion hole 322 of the connection member 36, preventing the rotating member 34 from rotating relative to the connection member 36.

[0064] The locking method implemented by using a battery lock is described in detail below.

[0065] First, the first locking member of the lock head 10 is installed on the vehicle body 3, the lock body 30 is installed on the battery box 2, and the battery exchange device 1 lifts the battery box 2. During the rising process of the battery box 2, the locking rod 32 of the second locking member moves along the entry channel 21 of the first locking member 20 until the first locking tongue passes over the bearing surface of the bearing part 33. At this time, the end surface of the bearing part 22 away from the rotating member 34 (i.e., the bearing surface) is located between the first locking tongue and the rotating member 34, that is, in this embodiment, the first locking tongue is located obliquely above the bearing surface of the bearing part 22.

[0066] Then, the driving mechanism is started, and the driving rod 31 of the driving mechanism drives the rotating member 34 to rotate, and the rotating member 34 is threadedly connected with the locking rod 32, driving the locking rod 32 to rotate. During the rotation of the locking rod 32, the first locking tongue moves along the circumferential direction of the first locking member 20 until at least part of the first locking tongue overlaps with the bearing surface of the bearing portion 22 in the axial direction to clamp the locking rod 32 to the first locking member 20.

[0067] Then, when the locking rod 32 rotates to above the bearing surface of the bearing portion 22, the second locking tongue of the locking rod 32 abuts against the stop portion 23 of the first locking member 20, causing the stop portion 23 to abut against the second locking tongue, causing the locking rod 32 to be stuck by the stop surface of the stop portion 23 and unable to continue rotating.

[0068] Then, since the locking rod 32 cannot rotate and the locking rod 32 and the connecting member 36 are an integral structure, the rotating member 34 rotates relative to the connecting member 36, so that the rotating member 34 and the connecting member 36 move toward each other along the axial direction of the connecting member 36. In this embodiment, the first locking tongue pulls the first locking member 20 and the rotating member 34 to move toward each other through the connecting member 36 and the locking rod 32 until the first locking tongue abuts against the bearing portion 22 and squeezes the bearing portion 22.

[0069] Finally, the rotating member 34 continues to rotate relative to the locking rod 32 until the locking rod 32 pulls the first locking member 20 and the rotating member 34 to move toward each other and lock the battery box 2 to the vehicle body 3. Then, the insertion rod 351 of the plug-in mechanism 35 is inserted into the insertion hole 322 of the connecting member 36 to prevent the connecting member 36 from rotating and play a role in preventing it from loosening.

[0070] When the battery box 2 needs to be unlocked, the battery exchange device 1 moves upward until the driving rod 31 docks with the rotating member 34, and at the same time, the plug rod 351 of the plug-in mechanism 35 retracts to unlock the rotating member 34. Then, the driving mechanism drives the rotating member 34 to rotate in the opposite direction relative to the mounting base 33 through the driving rod 31. At this time, the locking rod 32 squeezes the bearing part 22 and has a large friction force. In this way, the rotating member 34 can rotate relative to the locking rod 32 and move along the length direction of the locking rod 32 away from the first locking member 20, thereby releasing the battery box 2.

[0071] When the friction force between the locking tongue 321 and the bearing portion 22 decreases, the rotating member 34 drives the locking rod 32 to rotate to a position corresponding to the entrance channel 21 and is stopped by the stop block 23, thereby completing the unlocking of the battery box 2. Then the rotating member 34 rotates again relative to the locking rod 32 to further release the battery box 2.

[0072] Finally, after confirming that the battery box 2 is completely released, the battery box 2 can be moved to complete the unlocking process.

[0073] Example 2

[0074] The difference between Example 2 and Example 1 is that in this embodiment, the first locking member and the second locking member are swapped, that is, the first locking member is located at the lock body 30 , and the second locking member is located at the lock head 10 .

[0075] Fig.10 is a schematic diagram of the structure of the battery lock embodiment 2 in the battery replacement system, Fig.11 Schematic diagram of the structure of the battery lock embodiment 2. Fig.10 and Fig.11 As shown, in this embodiment, the first locking member (i.e., cylindrical structure) is connected to the connecting member 36 of the lock body 30, the connecting member 36 is threadedly connected to the rotating member 34, and the connecting member 36 is connected to the first locking member. The structure of the first locking member is the same as that of embodiment 1, and will not be repeated here.

[0076] The lock head 10 includes a second locking member (i.e. Fig.11 The second locking member is installed on the vehicle body 3. The structure of the second locking member is the same as that of the embodiment 1, and will not be described in detail here.

[0077] When in use, the second locking member of the lock head 10 is installed on the vehicle body 3, the lock body 30 is installed on the battery box 2, and the battery replacement device 1 lifts up the battery box 2. During the rising process of the battery box 2, the entry channel 21 of the first locking member 20 receives the locking rod 32 of the second locking member until the first locking tongue of the first locking member 20 passes over the bearing surface of the bearing part 22. At this time, the bearing surface of the bearing part 22 is located between the first locking tongue and the lock head 10, that is, the first locking tongue is located Fig.10 The supporting portion 22 is shown obliquely below the supporting surface.

[0078] Then, the driving mechanism is started, and the driving rod 31 of the driving mechanism drives the rotating member 34 to rotate, and the rotating member 34 is threadedly connected with the connecting member 36, thereby driving the first locking member 20 to rotate. During the rotation of the first locking member 20, the first locking tongue and the bearing surface of the bearing portion 22 move toward each other along the circumferential direction until at least a portion of the first locking tongue overlaps the bearing surface of the bearing portion 22 along the axial direction, so that the locking rod 32 is clamped to the first locking member 20.

[0079] Next, when the second locking tongue of the locking rod 32 abuts against the stopping portion 23 of the first locking member 20 , the stopping portion 23 abuts against the second locking tongue, causing the first locking member 20 and the connecting member 36 to be stuck and unable to continue to rotate.

[0080] Then, since the connecting member 36 cannot rotate, the rotating member 34 rotates relative to the connecting member 36, so that the rotating member 34 and the connecting member 36 move toward each other along the axial direction of the connecting member 36, and the connecting member 36 and the first locking member 20 pull the locking rod 32 of the second locking member and the rotating member 34 to move toward each other until the first locking tongue abuts against the bearing portion 22 and squeezes the bearing surface of the bearing portion 22.

[0081] Finally, the rotating member 34 continues to rotate relative to the connecting member 36 until the connecting member 36 and the first locking member 20 pull the locking rod 32 of the second locking member to move toward each other and lock the battery box 2 to the vehicle body 3. Then, the insertion rod 351 of the plug-in mechanism 35 is inserted into the insertion hole 322 of the connecting member 36 to prevent the connecting member 36 from rotating and play a role in preventing it from loosening.

[0082] When the battery box 2 needs to be unlocked, the battery exchange device 1 moves upward to the position where the driving rod 31 docks with the rotating member 34, and at the same time, the plug rod 351 of the plug-in mechanism 35 retracts to unlock the connecting member 36. Then, the driving mechanism drives the rotating member 34 to rotate in the opposite direction relative to the mounting base 33 through the driving rod 31. At this time, the locking rod 32 has a large friction force due to the compression of the bearing part 22, so that the rotating member 34 can rotate relative to the connecting member 36 and move along the axial direction of the locking rod 32, thereby releasing the battery box 2.

[0083] During the process of decreasing friction between the locking tongue 321 and the bearing portion 22, the rotating member 34 drives the connecting member 36 to rotate until the locking tongue 321 corresponds to the position of the entrance channel 21 and is stopped by the stop block 23, thereby completing the unlocking of the battery box 2. Then the rotating member 34 rotates again relative to the connecting member 36 to further release the battery box 2.

[0084] Finally, after confirming that the battery box 2 is completely released, the battery box 2 can be moved to complete the unlocking process.

[0085] Before locking the battery box 2, the above-mentioned battery lock and locking method are used. The connecting member 36 is connected to the rotating member 34 through a thread. When the locking rod 32 is clamped on the first locking member 20, the rotating member 34 rotates relative to the connecting member 36, so that the rotating member 34 locks the battery box 2 to the vehicle body through the first locking member 20 and the second locking member. In the process of locking the battery box 2, there is no need for screwing in or out of the thread, which avoids the problem of thread wear due to inaccurate thread head position when the threads are connected. The above-mentioned battery lock and locking method can allow larger docking errors, and has a simple structure and low production and maintenance costs.

[0086] Moreover, the above-mentioned battery lock and locking method drive the connecting member 36 to rotate through the rotating member 34, so that the rotating member 34 pulls the lock head 10 to move through the locking rod 32. Since the diameter of the connecting member 36 is small, the inner diameter of the thread between the connecting member 36 and the rotating member 34 is also small, so that the rotating member 34 can be driven to rotate with a smaller torque, which is particularly important when the space of the battery lock is limited.

[0087] 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.

[0088] 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 lock for locking a battery box to a vehicle body, characterized in that: include: Lock head; The lock body comprises a connecting piece and a rotating piece, wherein the connecting piece is threadedly connected to the rotating piece; After the connecting member is clamped on the lock head, the rotating member rotates relative to the connecting member, so that the connecting member pulls the lock head to lock the battery box to the vehicle body; The lock assembly further comprises a first locking member and a second locking member, wherein one of the first locking member and the second locking member is connected to the lock head, and the other is connected to the connecting member, and the connecting member is connected to the lock head by the first locking member being clamped to the second locking member; The rotating member rotates relative to the connecting member, so that the rotating member and the connecting member move along the axial direction of the connecting member, and the battery box is locked to the vehicle body; The lock body further comprises a mounting base and a plug-in mechanism, the rotating member is rotatably connected to the mounting base, and the plug-in mechanism is used to abut against the connecting member to limit the rotation of the connecting member; The connecting member is provided with a plug hole, the plug-in mechanism comprises a control rod, a plug rod, a connecting ball, a first spring and a second spring, the mounting base is provided with a through hole extending in a radial direction of the rotating member, the plug rod is arranged in the through hole, and the plug rod can move along the length direction of the through hole, be plugged into the plug hole of the connecting member, or be disengaged from the plug hole of the connecting member; The second spring is sleeved on the insertion rod, and one end of the second spring abuts against the side wall of the through hole of the mounting base, and the other end abuts against the insertion rod; The end of the plug rod away from the plug hole is also provided with the connecting ball, the connecting ball is located in the through hole of the mounting base and abuts against the control rod; The control rod is movably connected to the mounting base, and the control rod is provided with a recessed area recessed in a radial direction; One end of the first spring abuts against the mounting base, and the other end abuts against the control rod.

2. The battery lock according to claim 1, characterized in that: The first locking member includes a bearing portion and an entry channel; the second locking member includes a locking rod and a first locking tongue protruding in the radial direction of the locking rod; When the first locking member and the second locking member move toward each other, the locking rod moves axially along the entry channel until the first locking tongue passes over the bearing surface of the bearing part; the rotating member is rotated to drive the connecting member to rotate, so that the first locking tongue moves in a circumferential direction relative to the bearing part until it at least partially overlaps with the bearing surface of the bearing part in the axial direction to clamp the locking rod to the first locking member.

3. The battery lock according to claim 2, characterized in that: The second locking member further comprises a second locking tongue extending in the radial direction of the locking rod; The first locking member further includes a stop portion, and when the second locking tongue abuts against the stop portion, the rotating member rotates relative to the connecting member.

4. The battery lock according to claim 3, characterized in that: The bearing portion is provided with a groove corresponding to the first locking tongue, and the first locking tongue abuts against the bearing portion in the groove.

5. The battery lock according to any one of claims 1 to 4, characterized in that: The rotating member comprises a cavity, a side wall of the cavity is provided with an internal thread, the connecting member is provided with an external thread, and the rotating member and the connecting member are threadedly connected by meshing the internal thread and the external thread.

6. The battery lock according to any one of claims 1 to 4, characterized in that: The connecting member comprises a cavity, a side wall of the cavity is provided with an internal thread, an outer wall of the rotating member is provided with an external thread, and the rotating member and the connecting member are threadedly connected by meshing the internal thread and the external thread.

7. A locking method for locking a battery box to a vehicle body, characterized in that: Applicable to the battery lock according to any one of claims 1 to 6, the locking method comprises the following steps: When the lock head and the lock body move toward each other until the connecting piece of the lock body is engaged with the lock head, the driving rotating piece rotates relative to the connecting piece; The connecting member pulls the lock head to lock the battery box to the vehicle body; The connecting piece of the lock body is connected to the lock head and comprises: When the first locking member and the second locking member move toward each other, the locking rod of the second locking member moves axially along the entry channel of the first locking member until the first locking tongue of the locking rod passes over the bearing surface of the bearing portion of the first locking member; Rotating the rotating member to drive the connecting member to rotate, so that the first locking tongue of the second locking member moves relative to the bearing portion in a circumferential direction until the first locking tongue at least partially overlaps with the bearing surface of the bearing portion in the axial direction, so that the first locking tongue can abut against the bearing surface to clamp the locking rod to the first locking member; and The connecting member pulling the lock head includes: When the second locking tongue of the second locking member abuts against the stopping portion of the first locking member, the rotating member rotates relative to the connecting member until the first locking tongue abuts against the bearing surface to pull the lock head; wherein, one of the first locking member and the second locking member is connected to the lock head, and the other is connected to the connecting member, and the connecting member is clamped to the lock head by the first locking member being clamped to the second locking member.

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