Lock body assembly, battery pack, locking mechanism and vehicle

Abstract

The utility model relates to the technical field of electric vehicles, in particular to a lock body assembly, a battery pack, a locking mechanism and a vehicle. The utility model aims to solve the problem that vibration and noise are generated due to reverse rotation of a threaded connecting piece when the threaded connecting piece is attached to a first tooth of a threaded fastener. Therefore, the lock body assembly comprises a mounting seat, a lock body, a lock body and a lock body, the connecting piece is provided with an operating part and a fastening part, the operating part is arranged in the containing cavity and can be in butt joint with the locking and unlocking head, the operating part comprises a first flange, the diameter of the first flange is larger than that of the via hole, and the upper portion of the fastening part can penetrate through the mounting hole and is fastened to a target fastener; and the elastic element is arranged on the connecting piece in a sleeving mode and located between the first flange and the inner wall of the top of the mounting base, and the elastic element generates elastic deformation in the process that the fastening part and the target fastener are disassembled. According to the invention, vibration and noise in the battery replacement process can be reduced.

Description

Technical Field

[0001] The present application relates to the technical field of electric vehicles, and in particular to a lock body assembly, a battery pack, a locking mechanism and a vehicle. Background Art

[0002] Battery swapping is one of the important ways to replenish energy for electric vehicles. The battery swapping time can usually be controlled within 3 minutes, which is close to the refueling time of traditional fuel vehicles. Therefore, it is becoming more and more popular among users. In the battery swapping solution, the locking mechanism used to connect the vehicle body and the battery pack is an important part of achieving "vehicle-battery separation".

[0003] In the related art, the locking mechanism for connecting the vehicle body and the battery pack includes a lock body assembly arranged on the battery pack and a locking assembly arranged on the vehicle body. The two are mostly connected by threads. A positive torque force is applied to the threaded connector by locking and unlocking the head to achieve the tightening between the threaded connector and the corresponding threaded fastener; a reverse torque force is applied to the threaded connector by locking and unlocking the head to achieve the disassembly between the threaded connector and the corresponding threaded fastener.

[0004] However, during the disassembly process of the threaded connector, when the threaded connector is withdrawn to fit the first thread of the threaded fastener, the locking and unlocking head will continue to reverse to ensure that the threaded connector and the threaded fastener are effectively disengaged. Since the locking and unlocking head exerts a relatively large pressure on the threaded connector, each rotation of the threaded connector will cause vibration and noise, which will affect the user experience of the passengers in the car.

[0005] Accordingly, the art needs a new technical solution to solve the above problems. Utility Model Content

[0006] In order to solve at least one of the above problems in the prior art, that is, to solve the problem of vibration and noise generated by the reverse rotation of the threaded connector when the first teeth of the threaded connector and the threaded fastener are in contact during the disassembly process of the threaded connector.

[0007] In the first aspect, the present application provides a lock body assembly, which includes: a mounting seat, which has a accommodating cavity internally configured, a mounting hole is provided at the top of the mounting seat, and a through hole is provided at the bottom, and the through hole is configured to allow a locking lock head to pass through; a connecting piece, which has an operating part and a fastening part connected to each other, the operating part can be freely slidably arranged in the accommodating cavity and the lower part of the operating part can be docked with the locking lock head, the operating part includes a first flange, the diameter of the first flange is larger than the diameter of the through hole, and the upper part of the fastening part can pass through the mounting hole and be rotatably fastened to a target fastener; an elastic element, which is sleeved on the connecting piece and is located between the first flange and the top inner wall of the mounting seat, wherein, during the process of rotating and disassembling the fastening part and the target fastener, the elastic element is always compressed by the first flange and the top inner wall to produce elastic deformation.

[0008] In some embodiments, the elastic element is configured as a conical spring, the conical spring comprising a first end and a second end, and the diameter of the conical spring gradually decreases from the first end to the second end; wherein the second end is disposed close to the first flange.

[0009] In some embodiments, the operating portion further includes a second flange, the second flange is located on an upper surface of the first flange, and a diameter of the second flange is smaller than that of the first flange.

[0010] In some embodiments, the second end of the conical spring is sleeved on the second flange, and a diameter of the second end is greater than a diameter of the second flange.

[0011] In some embodiments, the lock body assembly also includes: a spring gasket, which is sleeved on the second flange and located on the upper surface of the first flange; wherein the friction force between the spring gasket and the elastic element is greater than the friction force between the spring gasket and the first flange, so that there is no relative rotation between the elastic element and the first flange.

[0012] In some embodiments, the lock body assembly further includes: an anti-loosening gasket, which is sleeved on the fastening portion and located on the upper surface of the second flange; wherein the anti-loosening gasket is configured to be squeezed between the second flange and the top inner wall of the mounting seat when the fastening portion and the target fastener are rotated and fastened.

[0013] In some embodiments, there is a gap between the first flange and the inner wall of the peripheral side of the mounting seat, and the gap has a value range of 0.3 mm to 0.7 mm.

[0014] In some embodiments, the maximum elastic force of the elastic element ranges from 200N to 310N.

[0015] In some embodiments, the mounting seat includes: a mounting seat body, which is a cylindrical structure, the bottom of the mounting seat body is open, and the top is provided with the mounting hole; an anti-falling component, which is detachably connected to the bottom of the mounting seat body and is surrounded by the mounting seat body to form the accommodating cavity, and the middle part of the anti-falling component is provided with the through hole.

[0016] In a second aspect, the present application provides a battery pack, the battery pack comprising a shell, and the shell is provided with any of the lock body assemblies described above.

[0017] In a third aspect, the present application provides a locking mechanism, which includes a locking assembly and any one of the lock body assemblies described above, wherein the lock body assembly is cooperatively connected with the locking assembly.

[0018] In a fourth aspect, the present application provides a vehicle comprising a vehicle body, a battery pack and any one of the locking mechanisms described above, wherein the battery pack is connected to the vehicle body via the locking mechanism.

[0019] Under the premise of adopting the above technical solution, the fastening part of the connector passes through the mounting hole at the top of the mounting seat and is threadedly connected to the target fastener. During the disassembly process of the connector, the locking and unlocking head passes through the through hole at the bottom of the mounting seat and docks with the operating part of the connector in the accommodating cavity. Further, the locking and unlocking head drives the connector to reverse and exit the target fastener. When the fastening part of the connector contacts the first tooth of the target fastener, the elastic element is compressed by the first flange and the top inner wall of the mounting seat and is in an elastic deformation state. Therefore, the elastic element gives the connector a counteracting force toward the locking and unlocking head. The counteracting force is opposite to the pressure direction of the locking and unlocking head on the connector. Therefore, the counteracting force can offset part of the pressure of the locking and unlocking head on the connector, thereby reducing the pressure between the connector and the target fastener. In this way, the present application can reduce the pressure between the connector and the target fastener during the disassembly of the connector through the design related to the elastic element, thereby reducing the vibration and noise generated by the reversal of the connector when the first teeth of the connector and the target fastener are in contact, which is conducive to improving the battery replacement experience of passengers. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The lock assembly, battery pack, locking mechanism and vehicle of the present application are described below with reference to the accompanying drawings. In the accompanying drawings:

[0021] Figure 1 An exploded view of the locking mechanism of the present application;

[0022] Figure 2 This is a schematic diagram of the structure of the mounting base of the present application;

[0023] Figure 3 This is a schematic diagram of the structure of the connector of the present application;

[0024] Figure 4This is a schematic diagram of the connection relationship between the elastic element and the connecting member in this application;

[0025] Figure 5 It is a cross-sectional view of the locking mechanism of the present application, wherein the fastening portion contacts the first tooth of the target fastener.

[0026] Reference numerals list

[0027] 100, mounting seat; 101, mounting hole; 102, through hole; 103, mounting seat body; 104, anti-falling part;

[0028] 200, connecting piece; 201, operating part; 202, fastening part; 203, first flange; 204, second flange;

[0029] 300, elastic element; 301, first end; 302, second end;

[0030] 400, lock head;

[0031] 500, target fasteners;

[0032] 600, spring washer;

[0033] 700. Anti-loosening gasket. DETAILED DESCRIPTION

[0034] The preferred embodiments of the present application are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application. For example, although the following embodiments of the present application are described in conjunction with electric vehicles, this is not intended to limit the scope of protection of the present application. Without departing from the principles of the present application, the lock body assembly, battery pack and locking mechanism of the present application can also be applied to other vehicles.

[0035] It should be noted that in the description of the present application, the terms "middle", "upper", "lower", "vertical", "inner", "outer" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0036] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0037] In a first aspect, the present application provides a lock body assembly.

[0038] Combination Figure 1 and Figure 2 As shown, the lock body assembly provided by the present application includes a mounting seat 100 , a connecting member 200 and an elastic element 300 .

[0039] The mounting seat 100 has an accommodating cavity inside, a mounting hole 101 is formed at the top of the mounting seat 100 , and a through hole 102 is formed at the bottom of the mounting seat 100 . The through hole 102 is configured to allow the locking lock head 400 to pass through.

[0040] Combination Figure 3 As shown, the connector 200 has an operating portion 201 and a fastening portion 202 connected to each other. The operating portion 201 is freely slidably disposed in the accommodating cavity, and the lower portion of the operating portion 201 can be docked with the locking latch 400, the operating portion 201 includes a first flange 203, the diameter of the first flange 203 is larger than the diameter of the through hole 102, and the upper portion of the fastening portion 202 can pass through the mounting hole 101 and be rotatably fastened to the target fastener 500.

[0041] Combination Figure 1 , Figure 4 and Figure 5 As shown, the elastic element 300 is sleeved on the connecting member 200, and the elastic element 300 is located between the first flange 203 and the top inner wall of the mounting seat 100. During the process of rotating and disassembling the fastening portion 202 and the target fastener 500, the elastic element 300 is always compressed by the first flange 203 and the top inner wall to produce elastic deformation.

[0042] Under the premise of adopting the above technical solution, the fastening portion 202 of the connector 200 passes through the mounting hole 101 at the top of the mounting seat 100 and is threadedly connected to the target fastener 500. During the disassembly process of the connector 200, the locking and unlocking head 400 passes through the through hole 102 at the bottom of the mounting seat 100 and docks with the operating portion 201 of the connector 200 in the accommodating cavity. Further, the locking and unlocking head 400 drives the connector 200 to reverse and exit the target fastener 500. When the fastening portion 202 of the connector 200 contacts the first tooth of the target fastener 500, the elastic element 300 is squeezed by the first flange 203 and the top inner wall of the mounting seat 100 and is in an elastic deformation state. Therefore, the elastic element 300 gives the connector 200 a counteracting force toward the locking and unlocking head 400 ( Figure 5 The offset force f2 is equal to the pressure ( Figure 5 The direction of f1) in the figure is opposite, so the offset force f2 can offset part of the pressure f1 exerted by the locking head 400 on the connector 200, thereby reducing the pressure between the connector 200 and the target fastener 500. In this way, the present application can reduce the pressure between the connector 200 and the target fastener 500 during the disassembly of the connector 200 through the design related to the elastic element 300, thereby reducing the vibration and noise generated by the reversal of the connector 200 when the first teeth of the connector 200 and the target fastener 500 are in contact, which is beneficial to improving the battery replacement experience of passengers.

[0043] It is understandable that the pressure f1 exerted by the locking head 400 on the connector 200 is always greater than the offset force f2. The difference between the pressure f1 and the offset force f2 ensures that the connector 200 can smoothly contact the first teeth of the target fastener 500 and ensure the normal engagement of the two.

[0044] The target fastener 500 and the connector 200 are connected by threaded fastening. The first thread of the target fastener 500 refers to the thread that first contacts the connector 200 in the target fastener 500 during the fastening process of the two; that is, the thread that last contacts the connector 200 in the target fastener 500 during the disassembly process of the two.

[0045] For example, when the lock body assembly is applied to a vehicle, the lock body assembly is fixed to the battery pack of the vehicle, and the target fastener 500 can be a vehicle chassis with locking holes, or the target fastener 500 can be a locking member or locking assembly provided on the vehicle chassis.

[0046] When installing the battery pack, lift the battery pack to the installation position of the vehicle chassis, and then drive the locking and unlocking device to operate. The locking and unlocking head of the locking and unlocking device rises and passes through the through hole 102 at the bottom of the mounting seat 100 and docks with the operating part 201 of the connector 200. The connector 200 then rises along the accommodating cavity driven by the locking and unlocking head 400 until the upper part of the fastening part 202 docks with the target fastener 500. The locking and unlocking head 400 applies a positive torque to the connector 200 and continues to lift, so that the connector 200 is rotated and fastened to the target fastener 500. During this process, the degree of compression of the elastic element 300 gradually increases. After installation, the locking and unlocking head 400 withdraws from the through hole 102 of the anti-falling member 104, and the elastic element 300 is compressed between the first flange 203 and the top inner wall of the mounting seat 100. The elastic element 300 will not be used as a clamped part in the threaded fastening connection. At the same time, the spring force of the elastic element 300 when it is compressed to the minimum height is less than 300N. Therefore, the influence of the elastic element 300 on the threaded fastening connection can be ignored.

[0047] When removing the battery pack, the locking and unlocking head 400 of the locking and unlocking device first passes through the through hole 102 at the bottom of the mounting seat 100 and docks with the operating part 201 of the connector 200, then presses against the connector 200 and applies reverse torque, and the connector 200 rotates out of the target fastener 500. When the fastening part of the connector contacts the first teeth of the target fastener, the elastic element is compressed by the first flange and the top inner wall of the mounting seat and is in an elastic deformation state. Therefore, the elastic element gives the connector a counteracting force toward the locking and unlocking head. The counteracting force can offset part of the pressure of the locking and unlocking head on the connector, thereby reducing the pressure between the connector and the target fastener, thereby reducing the vibration and noise generated by the reversal of the connector when the first teeth of the connector and the target fastener are in contact, which is beneficial to improving the battery replacement experience of passengers.

[0048] In some embodiments, in combination Figure 1 and Figure 4 As shown, the elastic element 300 is configured as a conical spring, and the conical spring includes a first end 301 and a second end 302. The diameter of the conical spring gradually decreases from the first end 301 to the second end 302. The second end 302 is disposed close to the first flange 203. The compression height of the conical spring is small. By configuring the elastic element 300 as a conical spring, it is beneficial to reduce the compression height of the elastic element 300 and reduce the space between the first flange 203 and the top inner wall of the mounting seat 100 occupied by the conical spring.

[0049] In some embodiments, in combination Figure 3As shown, the operating portion 201 further includes a second flange 204, which is located on the upper surface of the first flange 203, and the diameter of the second flange 204 is smaller than the first flange 203. In this way, during the connection process of the locking mechanism, the top inner wall of the mounting seat 11 directly generates friction with the second flange 204 as a pressure-bearing surface, thereby ensuring the firmness of the connection between the connecting member 200 and the target fastener 500.

[0050] In some embodiments, in combination Figure 4 and Figure 5 As shown, the second end 302 of the conical spring is sleeved on the second flange 204, and the diameter of the second end 302 is larger than the diameter of the second flange 204. By making the diameter of the second end 302 of the conical spring larger than the diameter of the second flange 204, the conical spring can be prevented from rotating with the connecting member 200, thereby reducing the influence of the conical spring on the threaded fastening connection between the connecting member 200 and the target fastener 500.

[0051] Optionally, the diameter of the second end 302 of the conical spring is slightly larger than the diameter of the second flange 204. In this way, the second end 302 of the conical spring can cooperate with the second flange 204 to limit the radial position of the second end 302 of the conical spring, thereby preventing the conical spring from being displaced radially when subjected to pressure, thereby improving the reliability of the lock body assembly.

[0052] In some embodiments, in combination Figure 1 and Figure 4 As shown, the lock body assembly also includes a spring washer 600. The spring washer 600 is sleeved on the second flange 204 and is located on the upper surface of the first flange 203. The friction between the spring washer and the elastic element 300 is greater than the friction between the spring washer and the first flange 203, so that there is no relative rotation between the elastic element and the first flange. By setting the spring washer 600, the friction between the elastic element 300 and the first flange 203 can be reduced, and the elastic element 300 and the spring washer 600 do not rotate with the connecting member 200, which can avoid the elastic element 300 from getting stuck when the connecting member 200 rotates. It can be understood that if the spring washer 600 is not set, the elastic element 300 directly contacts the first flange 203, and the large friction between the two may cause the elastic element 300 to get stuck when the connecting member 200 rotates.

[0053] In some embodiments, in combination Figure 1 , Figure 4 and Figure 5 As shown, the lock body assembly further includes an anti-loosening gasket 700, which is sleeved on the fastening portion 202 and located on the upper surface of the second flange 204. The anti-loosening gasket 700 is configured to be squeezed between the second flange 204 and the top inner wall of the mounting seat 100 when the fastening portion 202 and the target fastener 500 are rotated and fastened.

[0054] By setting the anti-loosening gasket 700 between the second flange 204 and the top inner wall of the mounting seat 100, the durability and connection reliability of the lock body assembly can be improved, the service life can be extended, and the complexity of the mechanism can be reduced. Specifically, in the locking process of the existing locking mechanism, the top inner wall of the mounting seat 100 directly generates friction with the connecting member 200 as a pressure-bearing surface, which will cause the connector 200 and the top inner wall of the mounting seat 100 to increase the degree of wear over time. In addition, since the mounting seat 100 of the lock body assembly is usually directly fixedly connected to the battery pack, it is also inconvenient to replace the worn mounting seat 100. However, by setting the anti-loosening gasket 700 between the second flange 204 and the top inner wall of the mounting seat 100, the wear surface can be transferred from the connecting member 200 and the top inner wall of the mounting seat 100 to the anti-loosening gasket 700 and the connecting member 200, thereby greatly reducing the degree of wear of the top inner wall of the mounting seat 100 and protecting the mounting seat 100. Moreover, compared with the mounting base 100, the connecting member 200 and the anti-loosening gasket 700 are more convenient to replace, and can also reduce the maintenance cost of the lock body assembly.

[0055] In some embodiments, there is a gap between the first flange 203 and the inner wall of the peripheral side of the mounting seat 100, and the gap value range is 0.3mm to 0.7mm. For example, the gap value range is 0.3mm, 0.4mm, 0.5mm, 0.6mm or 0.7mm, etc. By limiting the gap to the above range, it is possible to prevent mud and sand from entering the area where the elastic element 300 is located to a large extent, which is conducive to reducing the probability of failure during the deformation of the elastic element 300.

[0056] In some embodiments, the maximum elastic force of the elastic element 300 ranges from 200 N to 310 N. For example, the maximum elastic force of the elastic element 300 is 200 N, 250 N, 280 N, 300 N or 310 N. This arrangement can reduce the influence of the elastic element 300 on the threaded fastening connection between the connector 200 and the target fastener 500.

[0057] In some embodiments, in combination Figure 1 and Figure 2 As shown, the mounting seat 100 includes a mounting seat body 103 and an anti-falling member 104. The mounting seat body 103 is a cylindrical structure, the bottom of the mounting seat body 103 is open, and a mounting hole 101 is provided on the top of the mounting seat body 103. The anti-falling member 104 is detachably connected to the bottom of the mounting seat body 103 and is surrounded by the mounting seat body 103 to form a receiving cavity, and a through hole 102 is provided in the middle of the anti-falling member 104.

[0058] See also Figure 1The anti-falling part 104 is a retaining ring, which is a plastic part or a metal part. A plurality of docking grooves are arranged on its bottom surface along the circumferential direction, and the docking grooves can be matched with special assembly and disassembly tools. An external thread is arranged on the outer peripheral side of the retaining ring, and the external thread is adapted to the internal thread arranged at the bottom of the mounting seat 100. During installation, a special disassembly and assembly tool is docked with the docking groove and a rotational torque is applied so that the retaining ring is screwed to the bottom of the mounting seat 100. After being screwed into place, a preset tightening torque continues to be applied to ensure the installation stability of the retaining ring. When the retaining ring needs to be disassembled, the disassembly and assembly tool is docked with the docking groove and a reverse torque is applied, and the retaining ring withdraws from the bottom of the mounting seat 100.

[0059] When the connecting member 200 is not rotationally fastened with the target fastener 500, the connecting member 200 is in a freely slidable state under the dual guidance of the inner wall of the mounting seat 100 and the mounting hole 101, wherein the first flange 203 abuts against the upper surface of the retaining ring under the action of gravity, and the fastening portion 202 extends through the mounting hole 101.

[0060] In a second aspect, the present application provides a battery pack, the battery pack comprising a housing, on which any of the above lock body assemblies is disposed. The battery pack of the present application has low vibration and noise during the battery replacement process, which is conducive to improving the battery replacement experience of passengers.

[0061] In a third aspect, the present application provides a locking mechanism, which includes a locking assembly and any of the above-mentioned lock body assemblies, and the lock body assembly is cooperatively connected with the locking assembly. The locking mechanism of the present application has less vibration and noise during the battery replacement process, which is conducive to improving the battery replacement experience of passengers.

[0062] In a third aspect, the present application provides a vehicle, comprising a vehicle body, a battery pack, and any of the above locking mechanisms, wherein the battery pack is connected to the vehicle body through the locking mechanism. The vehicle of the present application has less vibration and noise during the battery replacement process, which is conducive to improving the battery replacement experience of passengers.

[0063] It should be noted that the above preferred implementations are only used to illustrate the principles of the present application and are not intended to limit the scope of protection of the present application. Without departing from the principles of the present application, those skilled in the art may adjust the above settings so that the present application can be applied to more specific application scenarios.

[0064] Those skilled in the art will appreciate that, although some embodiments herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present application and form different embodiments. For example, in the claims of the present application, any one of the claimed embodiments may be used in any combination.

[0065] So far, the technical solutions of the present application have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Without departing from the principles of the present application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present application.

Claims

1. A lock body assembly, characterized in that: The lock body assembly comprises: A mounting seat, the interior of which is structured with a receiving cavity, a mounting hole is provided on the top of the mounting seat, and a through hole is provided on the bottom, wherein the through hole is configured to allow a locking lock head to pass through; A connector, comprising an operating portion and a fastening portion connected to each other, wherein the operating portion is freely slidably disposed in the accommodating cavity and the lower portion of the operating portion can be docked with the locking lock head, the operating portion comprises a first flange, the diameter of the first flange is larger than the diameter of the through hole, and the upper portion of the fastening portion can pass through the mounting hole and be rotatably fastened to the target fastener; An elastic element is sleeved on the connecting piece and located between the first flange and the top inner wall of the mounting seat, wherein during the rotation and disassembly of the fastening portion and the target fastener, the elastic element is always compressed by the first flange and the top inner wall to produce elastic deformation.

2. The lock assembly according to claim 1, characterized in that: The elastic element is configured as a conical spring, which includes a first end and a second end. The diameter of the conical spring gradually decreases from the first end to the second end. The second end is configured close to the first flange.

3. The lock assembly according to claim 2, characterized in that: The operating portion further includes a second flange, which is located on an upper surface of the first flange and has a diameter smaller than that of the first flange.

4. The lock assembly according to claim 3, characterized in that: The second end of the conical spring is sleeved on the second flange, and the diameter of the second end is greater than the diameter of the second flange.

5. The lock assembly according to claim 3, characterized in that: The lock body assembly further includes: a spring washer, which is sleeved on the second flange and located on the upper surface of the first flange; wherein the friction force between the spring washer and the elastic element is greater than the friction force between the spring washer and the first flange, so that there is no relative rotation between the elastic element and the first flange; and / or, The lock body assembly also includes: an anti-loosening gasket, which is sleeved on the fastening portion and located on the upper surface of the second flange; wherein the anti-loosening gasket is configured to be squeezed between the second flange and the top inner wall of the mounting seat when the fastening portion and the target fastener are rotated and fastened.

6. The lock assembly according to any one of claims 1 to 5, characterized in that: The mounting base comprises: The mounting seat body is in a cylindrical structure, the bottom of the mounting seat body is open, and the top is provided with the mounting hole; The anti-falling component is detachably connected to the bottom of the mounting seat body and is arranged with the mounting seat body to form the accommodating cavity. The middle part of the anti-falling component is provided with the through hole.

7. The lock assembly according to any one of claims 1 to 5, characterized in that: There is a gap between the first flange and the inner wall of the peripheral side of the mounting seat, and the gap has a value range of 0.3 mm to 0.7 mm; and / or, The maximum elastic force of the elastic element ranges from 200N to 310N.

8. A battery pack, characterized in that: The battery pack comprises a housing, and the lock body assembly according to any one of claims 1 to 7 is arranged on the housing.

9. A locking mechanism, characterized in that: The locking mechanism comprises a locking assembly and a lock body assembly according to any one of claims 1 to 7, and the lock body assembly is cooperatively connected with the locking assembly.

10. A vehicle, characterized in that: The vehicle comprises a vehicle body, a battery pack and the locking mechanism according to claim 9, wherein the battery pack is connected to the vehicle body via the locking mechanism.

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