Lock body assembly, power battery for vehicle, battery locking mechanism, and vehicle

Abstract

A lock body assembly (1), a power battery for a vehicle, a battery locking mechanism (100), and a vehicle. The lock body assembly (1) is applied to the battery locking mechanism (100) for a vehicle power battery. The battery locking mechanism (100) comprises the lock body assembly (1) and a fixing assembly (2) used for connecting to a vehicle body. The lock body assembly (1) comprises: a sleeve (11) in the shape of a cylinder with an open bottom end, the sleeve being provided with a through-hole (111) at a top end thereof and formed with a position-limiting portion (112) on an inner wall thereof; a threaded fastener (12) at least partially disposed inside the sleeve (11), wherein the threaded fastener (12) has a first mating portion (122) and an external threaded section (121) extending through the through-hole (111), so that an external thread of the external threaded section (121) can engage with the fixing assembly (2) to limit axial relative movement between the lock body assembly (1) and the fixing assembly (2); an adjustment block (13) at least partially disposed inside the sleeve (11) and formed with a second mating portion (131), the first mating portion (122) engaging with the second mating portion (131) and limiting circumferential relative rotation between the threaded fastener (12) and the adjustment block (13); and a position-limiting plate (14) disposed inside the sleeve (11), wherein movement of the adjustment block (13) toward the fixing assembly (2) is limited by the position-limiting portion (112), and movement of the adjustment block (13) away from the fixing assembly (2) is limited by the position-limiting plate (14).

Description

Lock body assembly, power battery for vehicle, battery locking mechanism and vehicle Technical Field

[0001] The present invention relates to the field of battery locks for vehicle power batteries, and in particular to a lock body assembly, a power battery for a vehicle, a battery locking mechanism, and a vehicle. Background Art

[0002] This section is intended to provide background information relevant to understanding the various technologies described herein. As the title of this section implies, this is a discussion of related technologies that should not in any way be considered prior art. Therefore, it should be understood that any statements in this section should be read in this light, rather than as admissions of prior art.

[0003] Vehicles, such as battery-swap new energy vehicles, have become a research hotspot today due to their fast energy replenishment and grid-friendliness.

[0004] As a non-limiting example, the power battery of a battery-swap new energy vehicle is secured to the vehicle body (e.g., chassis) via a battery locking mechanism. Because the circumferential anti-loosening and locking technology of a threaded locking mechanism utilizes tooth grooves, keyways, pin slots, pin-hole connections, and form-fitting, it is often relatively large in thickness. The thickness of the battery locking mechanism directly affects the height of the vehicle chassis, as well as the height and comfort of the vehicle's lower interior space. Summary of the Invention

[0005] The object of the present invention is to achieve locking of a vehicle power battery in a cost-effective manner with a low cost and a small number of parts.

[0006] In addition, the present invention is also intended to solve or alleviate other technical problems existing in the prior art.

[0007] The present invention solves the above-mentioned problems by providing a lock body assembly, a power battery for a vehicle, a battery locking mechanism and a vehicle. Specifically, according to one aspect of the present invention, there are provided: a lock body assembly, a battery locking mechanism for a power battery of a vehicle, wherein the battery locking mechanism includes the lock body assembly and a fixing assembly for connecting to a vehicle body, the lock body assembly including: a sleeve, the sleeve being cylindrical with an open bottom end, a through hole being formed at the top end of the sleeve, and an inner side wall of the sleeve being configured with a limiting portion; a threaded fastener, which is at least partially arranged in the sleeve, the threaded fastener having an external thread section and a first mating portion, the external thread section extending through the through hole so that the external thread of the external thread section can be engaged with the fixing assembly to limit the axial relative movement of the lock body assembly and the fixing assembly; an adjustment block, which is at least partially arranged in the sleeve, the adjustment block being configured with a second mating portion, the first mating portion being engaged with the second mating portion and limiting the circumferential relative rotation of the threaded fastener and the adjustment block; A limiting plate is arranged in the sleeve, and the movement of the adjusting block toward the fixing assembly is limited by the limiting portion, and the movement of the adjusting block away from the fixing assembly is limited by the limiting plate.

[0008] Optionally, according to one embodiment of the present invention, the lock body assembly further includes a spring, which is sleeved on the threaded fastener and arranged axially between the inner top wall of the sleeve and the adjustment block, for applying spring force to the adjustment block toward the limit plate.

[0009] Optionally, according to one embodiment of the present invention, the adjustment block includes a main body and a protrusion extending from the main body, the main body and the protrusion form an axial opening of the adjustment block, and the second fitting portion is constructed on the inner wall of the axial opening.

[0010] Optionally, according to an embodiment of the present invention, a third matching portion for operating the adjustment block is configured on an outer periphery of the protrusion, and the protrusion extends out of the sleeve.

[0011] Optionally, according to one embodiment of the present invention, the threaded fastener further has a flange, wherein the flange is configured between the external thread segment and the first matching portion, and the flange is confined within the sleeve.

[0012] Optionally, according to one embodiment of the present invention, the lock body assembly further includes a double-stacked self-locking washer, which is arranged between the inner top wall of the sleeve and the flange and supported by the flange, and the double-stacked self-locking washer includes a first washer and a second washer, the first washer and the second washer are configured with wedge-shaped teeth that engage with each other, and the end face of the double-stacked self-locking washer facing the inner top wall of the sleeve and the end face facing the flange are both configured with radial teeth.

[0013] Optionally, according to an embodiment of the present invention, the lock body assembly further includes a spring seat, which is arranged between the spring and the adjustment block, and supports the spring.

[0014] According to another aspect of the present invention, a power battery for a vehicle is provided, wherein any one of the above-mentioned lock body assemblies is provided on a battery housing of the power battery.

[0015] According to another aspect of the present invention, a battery locking mechanism is provided, wherein the battery locking mechanism includes any one of the above-mentioned lock body components and the fixing component.

[0016] Optionally, according to one embodiment of the present invention, the fixing assembly includes a locking plate and a fixing frame, the locking plate is connected to the fixing frame, the fixing frame is used to be assembled to the vehicle body, the locking plate is configured with an internal thread, and the external thread of the external thread segment is used to cooperate with the internal thread thread.

[0017] According to yet another aspect of the present invention, a vehicle is provided, wherein the vehicle includes a power battery and any one of the above-mentioned battery locking mechanisms, and the power battery is loaded and unloaded through the battery locking mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other features of the present invention will become apparent with reference to the accompanying drawings, in which: FIG1 shows a schematic structural diagram of a battery locking mechanism according to the present invention; FIG2 shows a schematic structural diagram of another battery locking mechanism according to the present invention; FIG3 shows an exploded view of a lock body assembly according to the present invention; FIG4 shows a cross-sectional view of a battery locking mechanism according to the present invention; FIG5 shows a stereoscopic view of a lock body assembly according to the present invention; and FIG6 shows a stereoscopic view of a fixing assembly according to the present invention. DETAILED DESCRIPTION

[0019] It is easy to understand that according to the technical solution of the present invention, without changing the essential spirit of the present invention, a person skilled in the art can propose a variety of interchangeable structural modes and implementation modes. Therefore, the following specific embodiments and drawings are only exemplary descriptions of the technical solution of the present invention and should not be regarded as the entire invention or as a limitation or restriction of the technical solution of the present invention.

[0020] The terms "up," "down," "left," "right," "front," "back," "front," "back," "top," and "bottom" mentioned or potentially mentioned in this specification are defined relative to the structures shown in the accompanying drawings. They are relative concepts and may vary depending on their location or usage. Therefore, these or other directional terms should not be interpreted as restrictive. In addition, the terms "first," "second," "third," and similar expressions are used only for descriptive and distinguishing purposes and should not be understood to indicate or imply the relative importance of the corresponding components.

[0021] Refer to Figures 1 to 5, wherein Figure 1 shows a structural schematic diagram of a battery locking mechanism according to the present invention; Figure 2 shows a structural schematic diagram of another battery locking mechanism according to the present invention; Figure 3 shows an exploded view of a lock body assembly according to the present invention; Figure 4 shows a cross-sectional view of a battery locking mechanism according to the present invention; and Figure 5 shows a stereoscopic view of a lock body assembly according to the present invention.

[0022] The lock body assembly 1 is a battery locking mechanism 100 for a power battery of a vehicle, wherein the battery locking mechanism 100 includes the lock body assembly 1 and a fixing assembly 2 for connecting to a vehicle body, the lock body assembly 1 including: a sleeve 11, the sleeve 11 being cylindrical with an open bottom end, a through hole 111 being formed at the top end of the sleeve 11, an inner sidewall of the sleeve 11 being configured with a limiting portion 112; a threaded fastener 12, which is at least partially arranged in the sleeve 11, the threaded fastener 12 having an external thread section 121 and a first mating portion 122, the external thread section 121 extending through the through hole 111 so that the external thread of the external thread section 121 can engage with the fixing assembly 2 to limit the axial relative movement of the lock body assembly 1 and the fixing assembly 2; An adjusting block 13 is at least partially arranged in the sleeve 11, and the adjusting block 13 is constructed with a second matching portion 131. The first matching portion 122 engages with the second matching portion 131 and limits the circumferential relative rotation of the threaded fastener 12 and the adjusting block 13; a limiting plate 14 is arranged in the sleeve 11, and the movement of the adjusting block 13 toward the fixing assembly 2 is limited by the limiting portion 112, and the movement of the adjusting block 13 away from the fixing assembly 2 is limited by the limiting plate 14.

[0023] It should be understood that the lock assembly or battery locking mechanism can be used to secure a vehicle's power battery to a fixed assembly on the vehicle body, or to unlock a power battery located within a fixed assembly on the vehicle body. Taking the perspective of Figure 1 as an example, the bottom end of the sleeve is the lower end, or the end facing away from the fixed assembly, while the top end of the sleeve is the upper end, or the end facing toward the fixed assembly. The interior of the sleeve forms a accommodating space for protecting and assembling the components within. The term "cylindrical" can be understood as a square or cylindrical body, including a cylindrical body, with a hollow interior. In this regard, the stopper plate, adjustment block, spring seat, threaded fastener, double-stacked self-locking washer, spring, and other components in this example can all be configured as rotating bodies to achieve smoother, more stable, and more convenient locking and unlocking functions. Threaded fasteners generally refer to components with threads used for fastening, such as bolts and screws. When the externally threaded section of the threaded fastener engages the fixed assembly, the two threads engage, thereby securing the lock assembly to the fixed assembly and, in turn, securing the power battery to the vehicle body. It is also understood that during the locking and unlocking process, due to the relationship of the threaded fit, the threaded fastener can move up or down in the through hole. Threaded fastening is a detachable fixed connection with advantages such as simple structure, reliable connection, and easy assembly and disassembly.

[0024] This technical solution utilizes an adjustment block, which engages with the first mating portion of the threaded fastener via a second mating portion, and this engagement restricts circumferential relative rotation between the two. In other words, there is no relative rotation between the adjustment block and the threaded fastener; they rotate together. Combined with the previous explanation of threaded engagement, it can be understood that while the adjustment block and the threaded fastener rotate together, the threaded engagement enables the threaded fastener to also move upward or downward during this period, thereby achieving locking and unlocking. Thus, the adjustment block can be considered a driving element. Force can be applied to the adjustment block by the user or a dedicated locking and unlocking tool, causing the adjustment block to rotate the threaded fastener while simultaneously raising or lowering the threaded fastener to facilitate loading and unloading the power battery. The design of the adjustment block also reduces the noise caused by the threaded fastener idling against the fixing assembly locking plate after the power battery is unlocked. This is because during the unlocking process, even after the external threads of the threaded fastener are completely disengaged from the internal threads of the fixing assembly locking plate, the locking and unlocking tool located below the locking mechanism still exerts an upward force on the threaded fastener, causing the threaded fastener to idly rotate against the fixing assembly locking plate. As a result, the adjusting block can share or bear the force of the locking and unlocking tool below on the threaded fastener, thereby achieving the above-mentioned noise reduction effect.

[0025] Exemplarily, the first mating portion and the second mating portion are keyway mating. For example, the first mating portion adopts a straight spline meshing section, and the second mating portion adopts a straight spline groove, which can transmit circumferential force and can move axially up and down. The advantages of straight spline mating include good torque transmission performance, good positioning performance, good sealing and easy disassembly. Here, the keyway and the meshing section are each evenly distributed on the periphery of the adjustment block or the threaded fastener so as to obtain a more stable and comprehensive transmission effect. Although the present disclosure does not elaborate in detail, the meshing method of the threaded fastener and the adjustment block can be changed to other methods such as a sliding buckle, which can also be applied.

[0026] In the present technical solution, the position of the adjustment block is limited by the design of the limiting plate and the limiting portion, so that the space for its axial movement is limited. As a result, during the process, the adjustment block can or basically can be fixed in position, and mainly or only rotates in place, which is sufficient to support the rise or fall of the threaded fastener. Therefore, the present disclosure only uses a relatively small number of components, is low-cost and simple to assemble, and realizes the loading and unloading of the power battery in a cost-effective manner. Here, the limiting portion is formed by the inner side wall of the sleeve. Specifically, the inner side wall of the sleeve is configured with a recessed portion, whereby the recessed portion and the main part of the inner side wall form a step, the upper end face of the adjustment block is limited by the step, and the lower end face is limited by the limiting plate. In addition, the limiting plate and the sleeve can be assembled together, for example, by means of threaded connection, welding, clamping, etc.

[0027] Therefore, it is possible to consider making the adjustment block, the limit plate, and the sleeve out of wear-resistant plastic to increase their service life, reduce noise, and reduce movement resistance. As a result, the gaps between the adjustment block and the limit plate and the limit portion can be made smaller, making the entire lock assembly more compact. Smaller gaps also help suppress noise during the operation of the lock assembly or during driving. In addition, because the adjustment block rotates in place and does not move up and down, the axial interaction force between the threaded fastener and the locking plate of the fixed assembly is very small, making the overall axial height lower and less likely to damage the threads of the locking plate and the threaded fastener, reducing wear.

[0028] In some embodiments of the present disclosure, the lock body assembly 1 also includes a spring 15, which is sleeved on the threaded fastener 12 and arranged axially between the inner top wall of the sleeve 11 and the adjustment block 13, and is used to apply spring force to the adjustment block 13 toward the limit plate 14.

[0029] It can be seen that, through the design of the spring, a spring force can be applied to the adjustment block in the direction of the limit plate. On the one hand, this can make the position of the adjustment block more stable during operation, and can also prevent it from vibrating up and down and making noise by pushing the adjustment block down to fit the limit plate during driving; on the other hand, it can also alleviate or offset the spring force of the locking and unlocking tool pushing the adjustment block upward during operation, thereby reducing friction and wear at the limit part. Those skilled in the art should know that, for example, the spring coefficient and the expected spring force can be adjusted by designing the material, size, shape, etc. of the spring. Depending on factors such as actual usage requirements and cost budget, the spring can also be cancelled, which is more flexible.

[0030] Thus, for example, it can be seen from FIG. 3 to FIG. 5 that the lock body assembly 1 further includes a spring seat 17 , which is arranged between the spring 15 and the adjustment block 13 , and supports the spring 15 .

[0031] The spring seat can, for example, be constructed as a hollow ring with an annular end face to abut against the spring. The annular sidewall is used to define the position of the spring so as to maintain the stability of the spring's position during operation or driving. The position design of the spring seat can serve to isolate the spring from the sleeve circumferentially, and from the adjustment block axially. It will slide against the upper surface of the adjustment block during the rotation of the adjustment block. In addition, the spring seat can also be used to reduce the wear of the adjustment block and spring, as well as the noise generated during operation or driving. Depending on actual usage requirements and cost budget and other factors, the spring seat can also be eliminated, which is more flexible.

[0032] Regarding the specific structural design of the adjustment block, exemplarily, the adjustment block 13 includes a main body 132 and a protrusion 133 extending from the main body 132, the main body 132 and the protrusion 133 forming an axial opening of the adjustment block 13, and the second mating portion 131 is constructed on the inner wall of the axial opening. Thus, the outside of the main body of the adjustment block is limited in axial position by the limiting plate and the limiting portion, while the protrusion and the inside of the main body of the adjustment block are used to cooperate with threaded fasteners, such as keyway cooperation. Here, the protrusion extends downward. In the locked state, the threaded fastener can, for example, be located within the axial opening, and in the unlocked state, the tail end of the threaded fastener can extend downward from the axial opening. This two-part structural design of the adjustment block can better cooperate with the surrounding parts to achieve their respective technical functions.

[0033] In order to facilitate the operation of the adjustment block, in some embodiments of the present disclosure, the outer periphery of the protrusion 133 is constructed with a third matching portion 134 for operating the adjustment block 13, and the protrusion 133 extends out of the sleeve 11. The third matching portion can be exemplarily constructed as a straight spline for tightening and transmitting circumferential force. The arrangement of the protrusion outside the sleeve (including a technical solution in which a part of the protrusion is located outside the sleeve) can also facilitate the user or the locking and unlocking tool to access the adjustment block. Here, the third matching portion is constructed on the outer periphery of the protrusion of the adjustment block. It can be understood that the shape characteristics of the third matching portion can be adaptively adjusted depending on the user's habits or the corresponding matching structural characteristics of the locking and unlocking tool.

[0034] In addition, the present disclosure also optimizes the design of circumferential anti-loosening and thickness control. Specifically, the threaded fastener 12 further has a flange 123, which is constructed between the external thread section 121 and the first mating portion 122. The flange 123 is confined within the sleeve 11. The lock body assembly 1 also includes a double-stacked self-locking washer 16, which is arranged between the inner top wall of the sleeve 11 and the flange 123 and supported by the flange 123. The double-stacked self-locking washer 16 includes a first washer and a second washer, each of which is configured with meshing wedge-shaped teeth. The end surface of the double-stacked self-locking washer 16 facing the inner top wall of the sleeve 11 and the end surface facing the flange 123 are both configured with radial teeth.

[0035] The flange can, for example, be configured in a disc shape and separate the first mating portion from the external threaded section. The flange also prevents the threaded fastener from falling out of the sleeve's through-hole or the second mating portion of the adjustment block. The double-stacked self-locking washer is positioned on the flange. Taking locking as an example, the rotation of the adjustment block drives the threaded fastener. Simultaneously, the threaded fastener and the fixed assembly's threaded engagement cause the fastener to rise during rotation. During this rise, the flange of the threaded fastener lifts the double-stacked self-locking washer along with it, ultimately forcing the double-stacked self-locking washer between the sleeve's inner top wall and the flange's upper surface. This allows the double-stacked self-locking washer's own wedge-shaped teeth to mesh tightly, while the radial teeth on each end of the washer engage the sleeve's inner top wall and the flange's upper surface, creating a clear imprint and achieving circumferential locking and locking. This prevents the threaded fastener from loosening under severe vibration or dynamic loads, while also achieving self-locking. Radial teeth can also be understood as radial teeth.

[0036] As described in the background, the inventors recognize that circumferential anti-loosening and locking technologies for a locking mechanism often employ tooth grooves, keyways, pin grooves, pinhole connections, and form-fitting mechanisms, and are located in the lower middle portion of the entire locking mechanism. This technical solution utilizes a double-stacked self-locking washer placed above the flange of the central threaded fastener, leveraging the clamping force between it and the sleeve when locked to prevent loosening. Therefore, by replacing the traditional tooth grooves, keyways, pin grooves, pinhole connections, and form-fitting mechanisms with the aforementioned approach, this technical solution reduces the overall thickness of the lock assembly and locking mechanism, improving its compactness. This also allows for more design space within the vehicle body and enhances ride comfort.

[0037] The present disclosure also relates to a power battery for a vehicle, wherein any of the aforementioned lock body assemblies 1 is disposed on the battery housing of the power battery. For example, the sleeve of the lock body assembly is connected to the power battery housing by welding. Thus, the various specific embodiments and achievable technical effects of the power battery disclosed herein inherit the various explanations of the lock body assembly described above. It is also understood that multiple lock body assemblies can be disposed on the power battery housing, for example, evenly distributed, to achieve a more stable and comprehensive locking effect.

[0038] The present disclosure also relates to a battery locking mechanism 100, comprising any of the aforementioned lock body assemblies 1 and the aforementioned fixing assembly 2. Similarly, the various embodiments and technical effects of the battery locking mechanism can be understood with reference to the description of the lock body assembly, and will not be elaborated upon here. It should be understood that the threaded fastener of the lock body assembly is used to engage the fixing assembly.

[0039] 6 , which shows a perspective view of a fixing assembly according to the present invention.

[0040] The fixing assembly 2 includes a locking plate 21 and a fixing frame 22, the locking plate 21 is connected to the fixing frame 22, and the fixing frame 22 is used to be assembled to the vehicle body (such as the chassis), the locking plate 21 is configured with an internal thread 211, and the external thread of the external thread section 121 is used to threadably cooperate with the internal thread 211.

[0041] Specifically, the mounting bracket is a bent body that is secured to the vehicle body via bolts or rivets through openings 221 defined therein. Four openings are shown in the figure as an example. The specific structure of the mounting bracket can be adapted to the desired vehicle body portion. The locking plate is a hollow cylindrical shape with internal threads for threaded engagement with a threaded fastener. The locking plate is connected to the mounting bracket via two bolts 23. For example, when locked, the threaded fastener can extend through the hollow hole of the locking plate to provide a secure fixation.

[0042] It should be understood that the battery locking mechanism of the present invention can be installed on various vehicles, including cars, trucks, buses, hybrid vehicles, pure electric vehicles, etc. Therefore, the subject matter of the present invention is also intended to protect a vehicle, wherein the vehicle includes a power battery and any of the above-mentioned battery locking mechanisms 100, and the power battery is loaded and unloaded via the battery locking mechanism 100.

[0043] At this point, combined with the above explanation, those skilled in the art should understand how to apply the lock body assembly or locking structure of each technical solution of the present disclosure to lock and unlock the power battery. Here, for the sake of clarity and completeness, the following is a comprehensive introduction to locking and unlocking the power battery.

[0044] When the power battery is to be removed, a circumferential force is transmitted to the second mating part of the adjustment block (manually by the user or with a tool), and then transmitted to the threaded fastener with the first mating part through the second mating part of the adjustment block, causing it to rotate accordingly, and the external threaded section with the external thread withdraws from the internal thread of the locking plate of the fixed component on the vehicle body, and the threaded fastener moves axially downward as a whole in the second mating part of the adjustment block (the threaded fastener rotates and moves downward at the same time. The reason for the downward movement is that its external thread is mated with the internal thread of the fixed component. During the downward movement of the threaded fastener, the position of the adjustment block remains unchanged, and only rotational movement is performed) until the external thread is completely disengaged from the internal thread of the locking plate, and the circumferential force on the adjustment block is withdrawn.

[0045] When locking the power battery, an axially upward force is transmitted to the threaded fastener, allowing it to reach the locking plate of the fixed component on the vehicle body instead of falling and fitting the adjustment block. A circumferential force is transmitted to the second mating portion of the adjustment block, and then transmitted to the threaded fastener with the first mating portion through the second mating portion of the adjustment block, causing it to rotate accordingly. The externally threaded section with external threads gradually engages with the internal threads of the locking plate of the fixed component on the vehicle body. The threaded fastener moves axially as a whole in the second mating portion of the adjustment block until the flange of the threaded fastener and the upper inner wall of the sleeve begin to press against the double-stacked self-locking washer. The wedge-shaped teeth of the double-stacked self-locking washer lock, and at the same time, the radial fine teeth on the outer surface of the washer bite the flange and the upper inner wall of the sleeve, forming a clear embossing mark, achieving circumferential anti-loosening. The upward force is then withdrawn.

[0046] It should be understood that all the above preferred embodiments are illustrative rather than restrictive, and various modifications or variations made by those skilled in the art to the specific embodiments described above under the concept of the present invention should be within the legal protection scope of the present invention.

Claims

1. A lock assembly (1), used for a battery locking mechanism (100) of a power battery of a vehicle, characterized in that: The battery locking mechanism (100) comprises the lock body assembly (1) and a fixing assembly (2) for connecting to a vehicle body, wherein the lock body assembly (1) comprises: A sleeve (11), wherein the sleeve (11) is in the shape of a cylinder with an open bottom end, a through hole (111) is provided at the top end of the sleeve (11), and a limiting portion (112) is structured on the inner side wall of the sleeve (11); a threaded fastener (12) at least partially disposed within the sleeve (11), the threaded fastener (12) having an external thread segment (121) and a first mating portion (122), the external thread segment (121) extending through the through hole (111) such that the external thread of the external thread segment (121) can engage with the fixing assembly (2) to limit axial relative movement between the lock body assembly (1) and the fixing assembly (2); an adjusting block (13) at least partially disposed in the sleeve (11), the adjusting block (13) being configured with a second matching portion (131), the first matching portion (122) engaging with the second matching portion (131) and limiting circumferential relative rotation of the threaded fastener (12) and the adjusting block (13); A limiting plate (14) is arranged in the sleeve (11); the movement of the adjusting block (13) toward the fixing assembly (2) is limited by the limiting portion (112); and the movement of the adjusting block (13) away from the fixing assembly (2) is limited by the limiting plate (14).

2. The lock assembly (1) according to claim 1, characterized in that: The lock body assembly (1) further includes a spring (15), which is sleeved on the threaded fastener (12) and axially arranged between the inner top wall of the sleeve (11) and the adjustment block (13), and is used to apply a spring force to the adjustment block (13) in the direction of the limit plate (14).

3. The lock assembly (1) according to claim 1, characterized in that: The adjusting block (13) comprises a main body (132) and a protrusion (133) extending from the main body (132); the main body (132) and the protrusion (133) form an axial through opening of the adjusting block (13); and the second fitting portion (131) is constructed on the inner wall of the axial through opening.

4. The lock assembly (1) according to claim 3, characterized in that: The outer periphery of the protrusion (133) is configured with a third matching portion (134) for operating the adjustment block (13), and the protrusion (133) extends out of the sleeve (11).

5. The lock body assembly (1) according to claim 1, characterized in that: The threaded fastener (12) further comprises a flange (123), wherein the flange (123) is configured between the external thread section (121) and the first matching portion (122), and the flange (123) is confined within the sleeve (11).

6. The lock assembly (1) according to claim 5, characterized in that: The lock body assembly (1) further comprises a double-stacked self-locking washer (16), which is arranged between the inner top wall of the sleeve (11) and the flange (123) and supported by the flange (123), and the double-stacked self-locking washer (16) comprises a first washer and a second washer, the first washer and the second washer being configured with wedge-shaped teeth meshing with each other, and the end surface of the double-stacked self-locking washer (16) facing the inner top wall of the sleeve (11) and the end surface facing the flange (123) are both configured with radial teeth.

7. The lock assembly (1) according to claim 2, characterized in that: The lock body assembly (1) further comprises a spring seat (17), wherein the spring seat (17) is arranged between the spring (15) and the adjustment block (13), and the spring seat (17) supports the spring (15).

8. A power battery for a vehicle, characterized in that: A lock body assembly (1) according to any one of claims 1 to 7 is provided on the battery housing of the power battery.

9. A battery locking mechanism (100), characterized in that: The battery locking mechanism (100) comprises a lock body assembly (1) according to any one of claims 1 to 7 and the fixing assembly (2).

10. The battery locking mechanism (100) according to claim 9, characterized in that: The fixing assembly (2) comprises a locking plate (21) and a fixing frame (22), wherein the locking plate (21) is connected to the fixing frame (22), and the fixing frame (22) is used for being assembled to a vehicle body, and the locking plate (21) is configured with an internal thread (211), and the external thread of the external thread section (121) is used for threaded engagement with the internal thread (211).

11. A vehicle, characterized in that: The vehicle comprises a power battery and a battery locking mechanism (100) according to claim 9 or 10, and the power battery is loaded and unloaded via the battery locking mechanism (100).

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