CN113183738A

CN113183738A - Battery lock and locking method

Info

Publication number: CN113183738A
Application number: CN202110499405.4A
Authority: CN
Inventors: 周长宗; 李铎; 王伟; 王俊; 温华锋; 潘程龙; 李永昌; 梁雄俊
Original assignee: Shenzhen Jingzhi Machine Co Ltd
Current assignee: Guozhi New Energy Technology Shenzhen Co ltd; Shenzhen Jingzhi Machinery Co Ltd
Priority date: 2021-05-05
Filing date: 2021-05-05
Publication date: 2021-07-30

Abstract

The application discloses a battery lock and a locking method. The battery lock includes: a lock head; the lock body comprises a connecting piece and a rotating piece, and the connecting piece is in threaded connection with the rotating piece; when the connecting piece is clamped on the lock head, the rotating piece rotates relative to the connecting piece, so that the rotating piece pulls the lock head to move oppositely through the connecting piece to lock the battery box on the vehicle body. According to the battery lock and the locking method, before the battery box is locked, the connecting piece is in threaded connection with the rotating piece, and after the connecting piece is clamped on the lock head, the rotating piece rotates relative to the connecting piece, so that the connecting piece pulls the lock head, and the battery box can be locked on the vehicle body. The screwing-in or screwing-out action in the process of thread matching is not needed in the process of locking the battery box, and the problem that threads are abraded due to the fact that the thread head is not aligned in position during butt joint and screwing of the threads is avoided.

Description

Battery lock and locking method

Technical Field

The invention belongs to the field of electric automobile battery replacement equipment, and particularly relates to a battery lock and a locking method.

Background

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

At present, a battery box of an electric automobile needs to be firmly locked in a bearing area of the electric automobile, and the battery box needs to be conveniently and rapidly unlocked or locked in the electric automobile when the battery is automatically replaced.

The locking of battery box is realized through the butt joint of screw thread and the action of closing soon to current screw thread locking mechanism, probably has the inaccurate problem of screw thread head position butt joint when the screw thread butt joint is screwed, leads to screw thread wearing and tearing, the jamming condition appears even, and unable normal close soon leads to the locking failure.

Disclosure of Invention

In view of the above, there is a need for a battery lock and a locking method, which aim to solve the problem of the existing battery lock that the threads are worn when the threads are in butt joint.

The present disclosure provides a battery lock for locking a battery box to a vehicle body, including:

a lock head;

the lock body comprises a connecting piece and a rotating piece, and the connecting piece is in threaded connection with the rotating piece;

after the connecting piece is clamped on the lock head, the rotating piece rotates relative to the connecting piece, so that the connecting piece pulls the lock head to lock the battery box on the vehicle body.

Preferably, the locking device further comprises a first locking piece and a second locking piece, one of the first locking piece and the second locking piece is connected to the locking head, the other one of the first locking piece and the second locking piece is connected to the connecting piece, and the connecting piece is connected to the locking head through the first locking piece clamped in the second locking piece.

Preferably, the first locking member comprises a bearing portion and an access passage; the second locking piece comprises a lock rod and a first lock tongue protruding along the radial direction of the lock rod;

when the first locking piece and the second locking piece move oppositely, the lock rod moves along the axial direction of the entering channel until the first lock tongue passes over the bearing surface of the bearing part; rotate the piece in order to drive the connecting piece rotates for first lock tongue relative the bearing part moves along the circumferencial direction at least part with the bearing surface of bearing part overlaps along the axial with the lock lever joint in first locking piece.

Preferably, the second locking piece further comprises a second bolt extending along the radial direction of the lock rod;

the first locking piece further comprises a stopping part, and when the second lock tongue abuts against the stopping part, the rotating piece rotates relative to the connecting piece.

Preferably, the bearing part is provided with a groove corresponding to the first lock tongue, and the first lock tongue abuts against the bearing part in the groove.

Preferably, the lock body still includes mounting base and grafting mechanism, rotate the piece and connect in with the mounting base, grafting mechanism is used for the butt rotate piece or connecting piece in order to restrict rotate piece or connecting piece rotate.

Preferably, the rotating part comprises a containing cavity, an internal thread is arranged on the side wall of the containing cavity, an external thread is arranged on the connecting part, and the rotating part and the connecting part are in threaded connection through the meshing of the internal thread and the external thread.

Preferably, the connecting piece is including holding the chamber, it is equipped with the internal thread to hold the chamber lateral wall, the outer wall that rotates the piece is equipped with the external screw thread, it passes through to rotate piece and connecting piece internal thread and external screw thread meshing realize threaded connection.

A locking method is used for locking a battery box on a vehicle body and comprises the following steps:

when the lock head and the lock body move oppositely to the connecting piece of the lock body to be clamped on the lock head, the rotating piece is driven to rotate relative to the connecting piece;

the connecting piece pulls the lock head so as to lock the battery box on the vehicle body.

Preferably, the locking device comprises:

when the first locking piece and the second locking piece move oppositely, the lock rod of the second locking piece moves along the axial direction of the entering channel of the first locking piece until the first lock tongue of the lock rod passes through the bearing surface of the bearing part of the first locking piece;

the rotating piece is rotated to drive the connecting piece to rotate, so that the first lock tongue of the second lock piece moves relative to the bearing part along the circumferential direction until at least part of the first lock tongue is overlapped with the bearing surface of the bearing part along the axial direction, and the first lock tongue is abutted against the bearing surface to clamp the lock rod on the first lock piece; and

the connecting piece pulls the tapered end includes:

when a second bolt of the second locking piece abuts against a stopping part of the first locking piece, the rotating piece rotates relative to the connecting piece until the first bolt abuts against the bearing surface to draw the lock head; one of the first locking piece and the second locking piece is connected with the lock head, the other one of the first locking piece and the second locking piece is connected with the connecting piece, and the connecting piece is connected with the lock head in a clamping mode through the first locking piece in the second locking piece in a clamping mode.

Compared with the prior art, the battery lock and the locking method have the advantages that before the battery box is locked, the connecting piece is in threaded connection with the rotating piece, and after the connecting piece is clamped with the lock head, the rotating piece rotates relative to the connecting piece, so that the connecting piece pulls the lock head, and the battery box can be locked on the vehicle body. The screwing-in or screwing-out action in the process of thread matching is not needed in the process of locking the battery box, the problem that threads are abraded due to the fact that the thread head is not aligned in position in butt joint when the threads are in butt joint and screwed is avoided, the battery lock and the locking method are in butt joint in a clamping mode when in butt joint, large butt joint errors can be allowed, the structure is simple, and the production and maintenance cost is low.

Furthermore, the battery lock and the locking method rotate relative to the connecting piece through the rotating piece, and the diameter of the connecting piece is small, so that the diameter of the thread between the connecting piece and the rotating piece is small, and the rotating piece can be driven to rotate with small torque, which is particularly important in the case of limited space of the battery lock.

Drawings

In order to illustrate the embodiments more clearly, the drawings that will be needed in the description of the embodiments will be briefly described below, it being apparent that the drawings in the following description are some examples of the disclosure, and that other drawings may be derived from those drawings by a person skilled in the art without inventive effort.

Fig. 1 is a schematic structural diagram of a battery replacement system in embodiment 1 of a battery lock.

Fig. 2 is a schematic structural diagram of embodiment 1 of the battery lock.

Fig. 3 is a schematic structural view of the battery lock in a disassembled state.

Fig. 4 is a schematic view of the first locking element of the lock cylinder.

Fig. 5 is a schematic sectional view at V-V in fig. 4.

Figure 6 is a schematic structural view of the lock body in a disassembled state.

Fig. 7 is a schematic cross-sectional view of a battery lock.

FIG. 8 is a schematic view of the lock lever and the rotating member in another embodiment.

Fig. 9 is a partial enlarged view at a in fig. 7.

Fig. 10 is a schematic structural diagram of the battery replacing system in embodiment 2 of the battery lock.

Fig. 11 is a schematic structural view of embodiment 2 of the battery lock.

Description of the main elements

The following detailed description will further illustrate the disclosure in conjunction with the above-described figures.

Detailed Description

In order that the above objects, features and advantages of the present disclosure can be more clearly understood, a detailed description of the present disclosure will be given below with reference to the accompanying drawings and detailed description. In addition, the embodiments and features of the embodiments of the present application may be combined with each other without conflict. In the following description, numerous specific details are set forth to provide a thorough understanding of the present disclosure, and the described embodiments are merely a subset of the embodiments of the present disclosure, rather than a complete embodiment. All other embodiments, which can be derived by one of ordinary skill in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used in the description herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure.

In various embodiments, for convenience in description and not limitation of the disclosure, the term "coupled" as used in the specification and claims of the present disclosure is not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.

Example 1

Fig. 1 is a schematic structural diagram of a battery lock in an electricity swapping system according to embodiment 1, fig. 2 is a schematic structural diagram of the battery lock according to embodiment 1, and fig. 3 is a schematic structural diagram of the battery lock in an exploded state. As shown in fig. 1 to 3, the battery replacement 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 lock member, and a second lock member. The lock 10 is mounted on the vehicle body 3, and the lock 30 is mounted on the battery box 2, but the present embodiment is not limited thereto, and the lock 10 may be connected to the battery box 2, and the lock 30 is mounted on the vehicle body 3, and those skilled in the art may set the mounting positions of the lock 10 and the lock 30 as needed. One of first locking piece and the second locking piece connect in tapered end 10, the other connect in lock body 30, lock body 30 passes through first locking piece joint in the joint of second locking piece realizes tapered end 10 and lock body 30.

When battery box 2 is required to be placed on the vehicle body, battery box 2 is jacked up by battery replacing equipment 1, so that battery box 2 moves upwards until lock head 10 and lock body 30 are clamped, battery box 2 is locked on vehicle body 3, and the battery box 2 can be prevented from being separated from vehicle body 3 or battery box 2 is prevented from shaking. In other embodiments, the battery box 2 may also be moved downward until the lock cylinder 10 and the lock body 30 are engaged, that is, the lock cylinder 10 may be moved toward the lock body 30 while the lock body 30 is stationary; however, it is also possible that the lock cylinder 10 is stationary and the lock body 30 moves towards the lock cylinder 10, and the movement of the lock cylinder 10 and the lock body 30 is not limited in this application.

Fig. 4 is a schematic structural view of the first locking member 20 of the cylinder, and fig. 5 is a schematic sectional view taken at V-V in fig. 4. As shown in fig. 4 and 5, the lock cylinder 10 includes a first lock member 20, and the first lock member 20 may be mounted to the vehicle body 3.

In the present embodiment, the first locking member 20 has a substantially cylindrical structure, and includes an entry passage 21 extending in the axial direction, a bearing portion 22, and a stopper portion 23. The entry passage 21 extends in the axial direction of the first locking member 20 corresponding to the outer shape of the lock lever 32, so that the lock lever 32 moves in the entry passage 21 in the direction of V-V shown in fig. 5. In the present embodiment, the inlet passage 21 is a special-shaped hole with a long-bar-shaped cross section.

The carrier part 22 is used for carrying the first locking tongue. In the present embodiment, the bearing portion 22 is a block structure adjacent to the access passage 21, and includes a bearing surface for bearing the first bolt. The bearing surface may be an end surface of the bearing portion 22, and may be one of two end surfaces in the axial direction depending on the region where the first latch abuts the bearing portion 22. The bearing surface of the bearing part 22 is provided with a groove 221, and the shape of the groove 221 corresponds to the shape of the first bolt. In this embodiment, the first locking tongue has a cylindrical structure, the groove 221 has an arc shape, and the arc-shaped groove 221 just accommodates the first locking tongue. When the battery box 2 is locked when the second latch abuts against the stopping portion 23, the first latch abuts against the groove 221.

The stopper portion 23 is used to abut against the second lock tongue to block the lock lever 32 from rotating. In this embodiment, the blocking portion 23 has a side surface along the vertical direction, and blocks the rotation of the lock lever 32 when the second latch bolt abuts against the side surface.

In the present embodiment, the pair of the bearing portions 22 and the pair of the stopper portions 23 are respectively provided so as to be distributed in the circumferential direction at the center position of the entry passage 21, and may have a certain interval in the circumferential direction. After the lock lever 32 enters the first locking member 20 along the entry path 21, it is rotated by a predetermined angle tiger to abut against the stop surface of the stopper portion 23. When the first latch tongue abuts against the bearing part 22, the first latch tongue is located in the groove 221 of the bearing part 22, and the lock connection between the lock rod 32 and the first locking piece 20 is realized. After the lock lever 32 is rotated reversely by a predetermined angle, the first latch tongue is located at the position of the entry passage 21 so that the lock lever 32 can be disengaged from the first locking member 20 along the entry passage 21.

Fig. 6 is a schematic structural view of the lock body 30 in a disassembled state, and fig. 7 is a schematic sectional view of the battery lock. As shown in fig. 6 and 7, the lock body 30 may be mounted to the battery case 2 for locking to the locking head 10.

The lock body 30 includes a mounting base 33, a second locking member, a coupling member 36, a turn member 34, and a plug mechanism 35. The second locking member includes a lock lever 32, a first bolt and a second bolt. The first lock tongue is used for hooking the first locking part 20, and the second lock tongue is used for clamping the first locking part 20 to prevent the lock rod 32 from rotating relative to the first locking part 20. In some embodiments, the first locking tongue and the second locking tongue are located at different positions on the locking bar 32, each functioning as a hook and catch. However, it is understood by those skilled in the art that the first locking tongue and the second locking tongue may be implemented by the same component by providing appropriate positions. As an example, in the present embodiment, the first locking tongue and the second locking tongue may be the same component, that is, the locking tongue 321 protruding from the locking lever 32 in a radial direction of the locking lever 32 shown in fig. 6 and 7 is connected to the locking lever 32 in a straight line shape. The first locking tongue and the second locking tongue are referred to as the locking tongues 321 in subsequent unification. In this embodiment, the first locking tongue and the second locking tongue are disposed on 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 locking tongues may also be in a cross shape or a quincunx shape or other structures.

The mounting base 33 is used for mounting the lock body 30 and has a through hole. The lock lever 32 and the connector 36 pass through the through hole, and one end thereof protrudes from one side surface of the mounting base 33, and the other end thereof protrudes from the other side surface of the mounting base 33. In the present embodiment, the rotor 34 is rotatably connected to the mounting base 33. Specifically, the mounting base 33 further includes a connecting piece 331, the connecting piece 331 and the mounting base 33 form a receiving cavity 332, and an edge of the connecting piece 331 protrudes from a through hole of the mounting base 33 along a radial direction, so that the receiving cavity 332 forms an arc-shaped groove structure with a lateral opening.

The rotor 34 has a substantially cylindrical structure with a boss 341 at the end. The boss 341 extends along the radial direction of the rotating element 34 and is disposed in the cavity 332 formed by the connecting piece 331, so that the rotating element 34 is clamped to the mounting base 33 and can rotate relative to the mounting base 33.

The rotary member 34 is threadedly coupled to the coupling member 36. In this embodiment, the connecting member 36 is rod-shaped and is integrated with the lock lever 32, and the lock lever 32 is located at an end of the connecting member 36. In the embodiment shown in fig. 7, 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 lock rod 32 is provided with an external thread, and the rotating member 34 and the connecting member 36 are in threaded connection through the engagement of the internal thread and the external thread. Fig. 8 is a schematic structural diagram of the lock rod 32 and the rotating member 34 in another embodiment, and in other embodiments, the connecting member 36 includes a cavity 323, the side wall of the cavity 323 is provided with internal threads, the outer wall of the rotating member 34 is provided with external threads, and the rotating member 34 and the connecting member 36 are in threaded connection through the engagement of the internal threads and the external threads.

The bottom of the rotator 34 includes a connection portion 342 for connecting a driving mechanism. In the present 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 rotational member 34 may be directly fixedly connected to the driving mechanism.

Fig. 9 is a partial enlarged view at a in fig. 7. As shown in fig. 7 and 9, the insertion mechanism 35 is adapted to be inserted into the insertion hole 322 to limit the rotation of the rotating member 34 or the connecting member 36 (which may also be the lock lever 32). In this embodiment, taking the rotor 34 as an example, the rotor 34 is provided with the insertion hole 322 (or may be a groove), and the inserting mechanism 35 includes a control rod 352, an insertion rod 351, a connecting ball 3512, a first spring 3521 and a second spring 3511. The insertion rod 351 is movably connected to the mounting base 33. In this embodiment, the mounting base 33 is provided with a through hole extending toward the radial direction of the rotating member 34, and the insertion rod 351 is disposed in the through hole, so that the insertion rod 351 can move along the length direction of the through hole, and be inserted into the insertion hole 322 of the rotating member 34, or be separated from the insertion hole 322 of the rotating member 34. The second spring 3511 is sleeved on the insertion rod 351, and one end of the second spring abuts against the sidewall of the through hole of the mounting base 33, and the other end of the second spring abuts against the insertion rod 351. The second spring 3511 is compressed when the plunger 351 is plugged into the plug hole 322, so that the plunger 351 can be retracted under the action of the second spring 3511 when the plunger 351 needs to be pulled out of the plug hole 322. Further, the end of the insertion rod 351 remote from the insertion hole 322 is provided with a connection ball 3512, and the connection ball 3512 is located in the through hole of the mounting base 33 and abuts against the control rod 352. A control rod 352 is movably connected to the mounting base 33, said control rod 352 being provided with a recessed area recessed in radial direction. One end of the first spring 3521 abuts against the mounting base 33, and the other end abuts against the lever 352.

In a normal state, the circumferential surface of the control lever 352 abuts against the connecting ball 3512, so that the insertion rod 351 is inserted into the insertion hole 322 to prevent the rotation member 34 from rotating. When the battery lock needs to be locked or unlocked, the control rod 352 is pressed to move the control rod 352, the recessed area of the control rod 352 moves to a position corresponding to the inserting rod 351, so that the inserting rod 351 retracts to be separated from the inserting hole 322 of the rotating part 34 under the action of the second spring 3511, and the unlocking process is completed. After the acting 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 concave area pushes against the connecting ball 3512, the connecting ball 3512 pushes the inserting rod 351 to move to be inserted into the inserting hole 322 of the rotating part 3434, and the rotating part 34 is prevented from rotating relative to the connecting part 36.

The locking method using the battery lock is described in detail below.

First, the first lock member of the lock head 10 is attached to the vehicle body 3, the lock body 30 is attached to the battery box 2, and the battery replacement device 1 jacks up the battery box 2. In the process of lifting the battery box 2, the lock rod 32 of the second locking member moves along the access channel 21 of the first locking member 20 until the first lock tongue passes over the bearing surface of the bearing part 33, and at this time, the end surface (i.e., the bearing surface) of the bearing part 22 far away from the rotating part 34 is located between the first lock tongue and the rotating part 34, that is, in the present embodiment, the first lock tongue is located obliquely above the bearing surface of the bearing part 22.

Then, the driving mechanism is started, the driving rod 31 of the driving mechanism drives the rotating piece 34 to rotate, and the rotating piece 34 is in threaded connection with the lock rod 32 to drive the lock rod 32 to rotate. In the process of rotating the lock rod 32, the first bolt moves along the circumferential direction of the first locking member 20 until the first bolt at least partially overlaps the bearing surface of the bearing portion 22 along the axial direction so as to clamp the lock rod 32 to the first locking member 20.

Then, when the lock lever 32 rotates above the bearing surface of the bearing portion 22, and the second lock tongue of the lock lever 32 abuts against the stopping portion 23 of the first locking member 20, the stopping portion 23 abuts against the second lock tongue, so that the lock lever 32 is blocked by the stopping surface of the stopping portion 23 and cannot rotate any more.

Then, since the lock lever 32 cannot rotate and the lock lever 32 and the connecting element 36 are integrated, the rotating element 34 rotates relative to the connecting element 36, so that the rotating element 34 and the connecting element 36 move towards each other along the axial direction of the connecting element 36, in the present embodiment, the first latch tongue pulls the first locking element 20 and the rotating element 34 to move towards each other through the connecting element 36 and the lock lever 32 until the first latch tongue abuts against the bearing portion 22 and presses the bearing portion 22.

Finally, the rotating part 34 continues to rotate relative to the lock lever 32 until the first locking part 20 and the rotating part 34 are drawn by the lock lever 32 to move towards each other so as to lock the battery box 2 to the vehicle body 3. Then, the insertion rod 351 of the insertion mechanism 35 is inserted into the insertion hole 322 of the rotating member 34, preventing the rotating member 34 from rotating and playing a role of preventing looseness.

When the battery box 2 needs to be unlocked, the battery replacing device 1 moves upwards until the driving rod 31 abuts against the rotating piece 34, and meanwhile, the inserting rod 351 of the inserting mechanism 35 retracts to unlock the rotating piece 34. Then, the driving mechanism drives the rotation member 34 to rotate reversely with respect to the mounting base 33 through the driving lever 31, at this time, since the lock lever 32 presses the bearing portion 22 with a large friction force, so that the rotation member 34 can rotate with respect to the lock lever 32 and move in a length direction of the lock lever 32 away from the first locking member 20, thereby releasing the battery case 2.

When the friction between the latch tongue 321 and the bearing part 22 decreases, the rotating member 34 drives the lock lever 32 to rotate to a position corresponding to the entering channel 21 and is stopped by the stop block 23, so as to complete unlocking of the battery box 2, and then the rotating member 34 rotates relative to the lock lever 32 again, so as to further release the battery box 2.

Finally, after it is confirmed that the battery box 2 is completely released, the battery box 2 may be moved to complete the unlocking process.

Example 2

Embodiment 2 differs from embodiment 1 in that in this embodiment, the first lock member and the second lock member are reversed, i.e., the first lock member is located in the lock body 30 and the second lock member is located in the lock cylinder 10.

Fig. 10 is a schematic structural diagram of the battery lock in the battery replacement system according to embodiment 2, and fig. 11 is a schematic structural diagram of the battery lock according to embodiment 2. As shown in fig. 10 and 11, in the present embodiment, the first locking member (i.e., a cylindrical structure) is coupled to the coupling member 36 of the lock body 30, the coupling member 36 is threadedly coupled to the rotation member 34, and the coupling member 36 is coupled to the first locking member. The structure of the first locking member is the same as that of embodiment 1, and is not described here.

The lock cylinder 10 includes a second lock member (i.e., a T-bar structure shown in fig. 11) that is mounted to the vehicle body 3. The structure of the second locking member is the same as that of embodiment 1, and is not described herein again.

When the battery replacing device is used, the second locking piece 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 replacing device 1 jacks up the battery box 2. In the process of lifting the battery box 2, the entering channel 21 of the first locking member 20 receives the lock rod 32 of the second locking member until the first lock tongue of the first locking member 20 passes over the bearing surface of the bearing part 22, and at this time, the bearing surface of the bearing part 22 is located between the first lock tongue and the lock head 10, that is, the first lock tongue is located obliquely below the bearing surface of the bearing part 22 shown in fig. 10.

Then, the driving mechanism is started, the driving rod 31 of the driving mechanism drives the rotating part 34 to rotate, and the rotating part 34 is in threaded connection with the connecting part 36 to drive the first locking part 20 to rotate. In the process of rotating the first locking element 20, the first bolt and the bearing surface of the bearing part 22 move in opposite directions along the circumferential direction until at least part of the first bolt overlaps with the bearing surface of the bearing part 22 along the axial direction so as to clamp the lock rod 32 to the first locking element 20.

Then, when the second bolt of the lock lever 32 abuts against the stopping portion 23 of the first locking member 20, the stopping portion 23 abuts against the second bolt, so that the first locking member 20 and the connecting member 36 are locked and cannot rotate any further.

Then, since the connecting element 36 cannot rotate, the rotating element 34 rotates relative to the connecting element 36, so that the rotating element 34 and the connecting element 36 move towards each other along the axial direction of the connecting element 36, and the connecting element 36 and the first locking element 20 pull the lock rod 32 and the rotating element 34 of the second locking element to move towards each other until the first lock tongue abuts against the bearing surface 22 and presses the bearing surface of the bearing part 22.

Finally, the rotating member 34 continues to rotate relative to the connecting member 36 until the lock lever 32 of the second locking member is pulled by the connecting member 36 and the first locking member 20 to move towards each other so as to lock the battery box 2 to the vehicle body 3. Then, the insertion rod 351 of the insertion mechanism 35 is inserted into the insertion hole 322 of the rotating member 34, preventing the rotating member 34 from rotating and playing a role of preventing looseness.

When the battery box 2 needs to be unlocked, the battery changer 1 moves upward to a position where the driving rod 31 abuts against the rotating piece 34, and simultaneously the inserting rod 351 of the inserting mechanism 35 retracts to unlock the rotating piece 34. Then, the driving mechanism drives the rotation member 34 to rotate reversely with respect to the mounting base 33 through the driving lever 31, at this time, since the lock lever 32 presses the bearing portion 22 with a large frictional force, so that the rotation member 34 can rotate with respect to the connection member 36 and move in the axial direction of the lock lever 32, and the battery case 2 can be released.

In the process of decreasing the friction between the locking tongue 321 and the bearing part 22, the rotating piece 34 drives the connecting piece 36 to rotate to the position where the locking tongue 321 corresponds to the entering channel 21 and is stopped by the stop block 23, so as to complete unlocking the battery box 2, and then the rotating piece 34 rotates relative to the connecting piece 36 again, so as to further release the battery box 2.

Before the battery box 2 is locked, the connecting piece 36 is in threaded connection with the rotating piece 34, the locking rod 32 is clamped and connected to the first locking piece 20, the rotating piece 34 rotates relative to the connecting piece 36, so that the rotating piece 34 locks the battery box 2 to the vehicle body through the first locking piece 20 and the second locking piece, screwing-in or screwing-out actions of threaded matching are not needed in the process of locking the battery box 2, the problem that threads are abraded due to inaccurate butt joint of thread heads during thread butt joint and screwing-in is avoided, and the battery lock and the locking method can allow large butt joint errors, are simple in structure and are low in production and maintenance cost.

Furthermore, the battery lock and the locking method described above drive the connecting element 36 to rotate through the rotating element 34, so that the rotating element 34 pulls the lock head 10 to move through the lock rod 32, and because the diameter of the connecting element 36 is small, the inner diameter of the thread between the connecting element 36 and the rotating element 34 is also small, so that the rotating element 34 can be driven to rotate with a small torque, which is particularly important in the case of the limited space of the battery lock.

In several embodiments provided in the present disclosure, it will be apparent to those skilled in the art that the present disclosure is not limited to the details of the above-described exemplary embodiments, and can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the disclosure being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Furthermore, it is obvious that the word "comprising" does not exclude other elements or steps, and the singular does not exclude the plural. The terms first, second, etc. are used to denote names, but not any particular order.

Although the present disclosure has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes may be made and equivalents may be substituted without departing from the spirit and scope of the present disclosure.

Claims

1. A battery lock for locking a battery box to a vehicle body, comprising:

a lock head;

2. The battery lock of claim 1, further comprising a first locking member and a second locking member, one of the first locking member and the second locking member being coupled to the locking head and the other being coupled to the coupling member, the coupling member being coupled to the locking head by the first locking member being snapped into the second locking member.

3. The battery lock of claim 2, wherein the first locking member includes a carrier portion and an access channel; the second locking piece comprises a lock rod and a first lock tongue protruding along the radial direction of the lock rod;

4. The battery lock of claim 3, wherein the second latch member further comprises a second locking tongue extending in a radial direction of the locking bar;

5. The battery lock of claim 4, wherein 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.

6. The battery lock of claim 5, wherein the lock body further comprises a mounting base to which the turn piece is rotatably connected and a plug-in mechanism for abutting the turn piece or the connecting piece to limit rotation of the turn piece or the connecting piece.

7. The battery lock of any one of claims 1-6, wherein the rotation member includes 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 rotation member and the connecting member are threadedly connected by engagement of the internal thread and the external thread.

8. The battery lock of any one of claims 1-6, wherein the connecting member comprises a cavity, the sidewall of the cavity is provided with an internal thread, the outer wall of the rotating member is provided with an external thread, and the rotating member and the connecting member are in threaded connection through the engagement of the internal thread and the external thread.

9. A locking method is used for locking a battery box on a vehicle body and is characterized by comprising the following steps:

10. The locking method of claim 9, wherein the step of engaging the lock body with the locking head comprises:

the connecting piece pulls the tapered end includes: