Locking mechanism, battery, vehicle, locking and unlocking mechanism and battery swap station

Abstract

The invention discloses a locking mechanism, a battery, a vehicle, a locking and unlocking mechanism and a battery swap station. The locking mechanism comprises a base, a locking piece and a locking maintaining part. The locking piece is matched with the base and is used for establishing locking or unlocking with a target component; the locking maintaining part can be coupled with the base and the locking piece, and the locking maintaining part and the target part are kept to be in a locking state through coupling. And in the locking establishing process or the locking unlocking process, the locking maintaining component and the locking piece are kept to rotate synchronously.

Description

Technical Field

[0001] The present application relates to the field of battery swapping, and particularly to a locking mechanism, a battery, a vehicle, a locking and unlocking mechanism, and a battery swapping station. Background Art

[0002] With the development of new energy technologies, the number of devices using batteries has increased. When the electrical energy of an electrical device runs out, the electrical energy is often replenished by connecting a charging device. For example, an electric vehicle can be connected to a charging pile for charging. Charging takes a long time and affects the user experience.

[0003] Compared with charging, battery swapping can replenish electrical energy faster. A battery is usually provided with a locking mechanism for connecting to a vehicle. How to improve the connection stability between the locking mechanism and the vehicle is an important research direction in this field. Summary of the Invention

[0004] The present application provides a locking mechanism, a battery, a vehicle, a locking and unlocking mechanism, and a battery swapping station, which can provide reliability.

[0005] In a first aspect, the present application provides a locking mechanism, which includes a base, a locking member, and a locking holding member. The locking member cooperates with the base and is used to establish or release a lock with a target member. The locking holding member can be coupled to the base and the locking member respectively, and the locking member is kept in a locked state with the target member through the coupling. During the process of establishing or releasing the lock, the locking holding member rotates synchronously with the locking member.

[0006] By being coupled to the base and the locking member, the locking holding member can reduce the risk of loosening of the locking member. During the process of establishing or releasing the lock, the locking holding member rotates synchronously with the locking member, thereby reducing the friction between the locking holding member and the locking member during rotation.

[0007] In some embodiments, the locking member includes a shaft body portion, wherein an anti-rotation structure is provided between at least a part of the shaft body portion and the locking holding member; and / or, the locking holding member includes a first mating structure. The locking member establishes or releases a lock with the target member through a locking and unlocking mechanism. During the process of establishing or releasing the lock, the locking holding member can rotate synchronously with the locking member through the coupling of the first mating structure with the locking and unlocking mechanism.

[0008] By providing the anti-rotation structure or the first mating structure, the locking holding member can rotate synchronously with the locking member during the process of establishing or releasing the lock, thereby reducing the friction between the locking holding member and the locking member during rotation.

[0009] In some embodiments, a first limiting structure is provided on the outer peripheral surface of the shaft body portion, and a second limiting structure is provided on the locking and holding member. The first limiting structure cooperates with the second limiting structure to limit the rotation of the locking and holding member relative to the shaft body portion; the dimension of the first limiting structure in the axial direction of the shaft body portion is greater than the stroke of the relative movement of the locking and holding member and the shaft body portion in the axial direction.

[0010] When the locking and holding member moves relative to the shaft body portion in the axial direction, the first limiting structure can remain in cooperation with the second limiting structure, thereby limiting the rotation of the locking and holding member relative to the shaft body portion, reducing the friction between the locking and holding member and the locking member, slowing down the wear of the locking and holding member and the locking member, and improving the sealing performance.

[0011] In some embodiments, the first mating structure of the locking and holding member includes a plurality of mating recesses, and the plurality of mating recesses are arranged at intervals in the circumferential direction of the locking member.

[0012] The plurality of mating recesses can increase the contact area between the locking and holding member and the unlocking and locking mechanism, reduce stress concentration, and reduce the risk of the locking and holding member disengaging from the unlocking and locking mechanism.

[0013] In some embodiments, the base has a receiving cavity. The base includes a first wall and a second wall respectively located on both sides of the receiving cavity along a first direction. The first wall is provided with a first through hole communicating with the receiving cavity, and the second wall is provided with a second through hole communicating with the receiving cavity. The locking member is movably arranged on the base along the first direction. The locking member includes a driving portion, a shaft body portion, and a locking portion arranged in sequence along the first direction. The shaft body portion is used to pass through the first through hole, and the locking portion is opposite to the second through hole along the first direction. The locking member can lock the locking portion extending out of the second through hole to a target component by rotation or release the locking of the locking portion and the target component by rotation. The driving portion is used to connect with an external unlocking and locking mechanism. Along the first direction, the projection of the driving portion is located within the projection of the shaft body portion. The locking and holding member is received in the receiving cavity and sleeved on the shaft body portion. The locking and holding member is used to abut against the first wall and cover at least a part of the first through hole. The locking and holding member can move relative to the first wall and the shaft body portion along the first direction. The first wall is configured to limit the rotation of the shaft body portion through the locking and holding member.

[0014] While playing a sealing role, the locking and holding member can limit the rotation of the shaft body portion through cooperation with the first wall, thereby improving the stability of the connection between the locking member and the vehicle body, reducing the risk of battery detachment, and improving the reliability of the battery and the vehicle. To unlock the locking member, it is necessary to first push the locking and holding member, which can enhance the anti-theft ability of the battery. Along the first direction, the projection of the driving portion is located within the projection of the shaft body portion. When unlocking the locking member, the driving portion is not likely to interfere with the structure of the unlocking and locking mechanism for pushing the locking and holding member.

[0015] In some embodiments, a groove is provided on one side of the first wall surface facing the second through hole. The first through hole penetrates the bottom wall of the groove, and at least a part of the locking and holding member is received in the groove. The locking and holding member is provided with a third limiting structure, and the side wall of the groove is provided with a fourth limiting structure. The third limiting structure cooperates with the fourth limiting structure to limit the rotation of the locking and holding member relative to the first wall.

[0016] The groove can accommodate at least a part of the locking and holding member, thereby improving the space utilization rate. The bottom wall of the groove can support the locking and holding member, thereby reducing the risk of the locking and holding member disengaging from the accommodation cavity. By providing the fourth limiting structure on the side wall of the groove, it is convenient to realize the cooperation between the fourth limiting structure and the third limiting structure.

[0017] In some embodiments, the contour of the projection of the driving portion is different from the contour of the projection of the shaft body portion, and the contour of the projection of the driving portion along the first direction is a non-regular polygon.

[0018] The contour of the projection of the driving portion is different from the contour of the projection of the shaft body portion, and the driving portion and the shaft body portion have different shapes. The unlocking mechanism needs to be adapted to both the driving portion and the shaft body portion simultaneously to achieve unlocking, which can improve the anti-theft ability.

[0019] In some embodiments, the locking member further includes a flange portion connecting the shaft body portion and the locking portion. The flange portion is received in the accommodation cavity and protrudes from the outer peripheral surface of the shaft body portion. The locking mechanism further includes a gasket fixed to the second wall and separating the second wall from the flange portion. The gasket is provided with a third through hole, and the third through hole is opposite to the second through hole along the first direction, and the locking portion can pass through the third through hole.

[0020] The gasket can separate the flange portion from the second wall, so as to avoid the flange portion directly pressing against the second wall during the repeated locking and unlocking of the locking mechanism, reduce the wear between the flange portion and the second wall, improve the service life of the locking member and the base, and enhance the reliability.

[0021] In some embodiments, the inner wall of the third through hole is provided with a receiving groove; the locking mechanism further includes a lubricating material received in the receiving groove. The lubricating material can lubricate the locking portion and improve the smoothness and convenience of the locking portion during repeated disassembly and assembly. By providing the receiving groove, a storage space can be provided for the lubricating material.

[0022] In some embodiments, the locking member further includes a flange portion connecting the shaft body portion and the locking portion. The flange portion is received in the accommodation cavity and protrudes from the outer peripheral surface of the shaft body portion. The locking mechanism further includes an elastic member sleeved on the shaft body portion and clamped between the flange portion and the locking and holding member in the first direction.

[0023] The elastic member can apply an elastic force to the locking and holding member to tightly press the locking and holding member against the first wall, so that the first wall can restrict the rotation of the shaft body through the locking and holding member, reducing the risk of loosening of the connection between the locking member and the target member caused by the rotation of the shaft body and improving the stability of the battery. When the battery vibrates, the elastic member can restrict the locking and holding member, reducing the risk of impurities entering the accommodation cavity caused by the locking and holding member detaching from the first wall.

[0024] In a second aspect, an embodiment of the present application further provides a battery, which includes the locking mechanism provided in any embodiment of the first aspect.

[0025] In a third aspect, an embodiment of the present application further provides a vehicle, which includes a vehicle body and the battery provided in the second aspect. The vehicle body includes a connecting member, a base is provided on one side of the connecting member along a first direction, and a locking member is locked to the connecting member. The vehicle can realize battery swapping, thereby quickly replenishing electric energy.

[0026] In some embodiments, the connecting member includes a threaded hole, and the locking member extends into the threaded hole and is threadedly connected to the connecting member. The vehicle body further includes a cover body, and the cover body is provided on the side of the connecting member away from the base and covers the threaded hole. The cover body can play a sealing role, reducing impurities entering the threaded hole, reducing the risk of corrosion of the internal thread of the connecting member and the external thread of the locking portion, and improving the stability of the screw connection.

[0027] In some embodiments, the vehicle body further includes a limiting member, and the connecting member is floatingly connected to the limiting member.

[0028] When there is a deviation in the relative position between the connecting member and the locking member, the connecting member can float when subjected to the acting force of the locking member to adjust the relative position between the connecting member and the locking member, so as to realize the locking between the connecting member and the locking member.

[0029] In some embodiments, the limiting member includes a first limiting plate, a second limiting plate and a connecting plate. The second limiting plate is located on the side of the first limiting plate away from the base along the first direction, and the connecting plate connects the first limiting plate and the second limiting plate. The first limiting plate is provided with a first channel, and the second limiting plate is provided with a second channel. The connecting member includes a connecting body and a connecting flange protruding from the outer periphery of the connecting body. In the first direction, at least a part of the connecting flange is located between the first limiting plate and the second limiting plate. The locking member passes through the first channel and is connected to the connecting body. The connecting body passes through the second channel; in at least one direction perpendicular to the first direction, the size of the second channel is larger than the size of the connecting body.

[0030] The first channel can avoid the locking member so that the locking portion of the locking member can be fixed to the connecting body. The first limiting plate and the second limiting plate can limit the connecting flange in the first direction, and the second limiting plate can limit the connecting body from the outer periphery, thereby reducing the risk of the connecting member falling off the limiting member. In at least one direction perpendicular to the first direction, the connecting body can float in the second channel.

[0031] In some embodiments, the vehicle body further includes a vehicle body structural member, and the connecting member and the base are respectively located on both sides of the vehicle body structural member, and the connecting member is connected to the vehicle body structural member. The vehicle body structural member includes a sill beam of the vehicle body. The sill beam has high structural strength, and installing the battery on the sill beam can improve the stability of the battery.

[0032] In a fourth aspect, an unlocking and locking mechanism is further provided in an embodiment of the present application, which is used to lock or unlock the locking member of the locking mechanism provided in any embodiment of the first aspect with a target component. The unlocking and locking mechanism includes an engaging portion and a supporting portion connected to each other. The supporting portion is used to drive the locking and holding member to move and release the coupling between the locking and holding member and the base. The engaging portion is configured to engage with the locking member and drive the locking member to rotate when the locking and holding member is decoupled from the base.

[0033] The supporting portion can release the coupling between the locking and holding member and the base before the engaging portion engages with the locking member, thereby releasing the anti-rotation limit on the locking member. The unlocking and locking mechanism needs to be provided with a supporting portion to unlock the locking member, which can improve the anti-theft ability of the battery.

[0034] In some embodiments, the supporting portion is a cylindrical structure, and a card slot is provided on one side of the engaging portion facing the supporting portion, and the card slot communicates with an avoidance channel formed by enclosing the cylindrical structure.

[0035] Setting the supporting portion as a cylindrical shape can increase the contact area between the supporting portion and the locking and holding member, improve the uniformity of the force on the locking and holding member, and reduce the risk of the locking and holding member getting stuck with the locking member. The card slot can accommodate the end of the locking member to achieve the clamping connection between the locking member and the engaging portion.

[0036] In some embodiments, the unlocking and locking mechanism further includes a second matching structure, which is arranged at one end of the supporting portion away from the engaging portion and is used for plugging and matching with the locking and holding member.

[0037] By providing the second matching structure, the locking and holding member can be engaged with the unlocking and locking mechanism; the unlocking and locking mechanism can be locked with both the locking and holding member and the locking member at the same time, so that the locking and holding member and the locking member rotate synchronously, thereby reducing the friction between the locking and holding member and the locking member during rotation.

[0038] Fifth aspect, the embodiments of the present application further provide a swapping station, which includes the unlocking and locking mechanism provided in any embodiment of the fourth aspect. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] The features, advantages and technical effects of the exemplary embodiments of the present application will be described below with reference to the drawings.

[0040] Figure 1 Schematic diagram of the locking mechanism provided in some embodiments of the present application before unlocking;

[0041] Figure 2 For Figure 1 Cross-sectional schematic diagram taken along the A-A direction;

[0042] Figure 3 Schematic diagram of the locking mechanism provided in some embodiments of the present application during the unlocking process;

[0043] Figure 4 Another schematic diagram of the locking mechanism provided in some embodiments of the present application during the unlocking process;

[0044] Figure 5 For Figure 1 Exploded schematic diagram of the structure shown;

[0045] Figure 6 Schematic diagram of the locking member of the locking mechanism provided in some embodiments of the present application;

[0046] Figure 7 Schematic diagram of one structure of the locking and holding member of the locking mechanism provided in some embodiments of the present application;

[0047] Figure 8 Another schematic diagram of the locking and holding member of the locking mechanism provided in some embodiments of the present application;

[0048] Figure 9 Schematic diagram of the cover plate of the locking mechanism provided in some embodiments of the present application;

[0049] Figure 10 Cross-sectional schematic diagram of the gasket of the locking mechanism provided in some embodiments of the present application;

[0050] Figure 11 Schematic diagram of the battery provided in some embodiments of the present application;

[0051] Figure 12 Schematic diagram of the vehicle provided in some embodiments of the present application;

[0052] Figure 13 Schematic diagram of the cover of the vehicle provided in some embodiments of the present application;

[0053] Figure 14 Schematic structural diagram of a connecting member and a limiting member of a vehicle provided in some embodiments of the present application;

[0054] Figure 15 For Figure 2 Enlarged schematic diagram at the square box;

[0055] Figure 16 Schematic structural diagram of an unlocking and locking mechanism provided in some embodiments of the present application;

[0056] Figure 17 For Figure 16 Cross-sectional schematic diagram of the unlocking and locking mechanism shown;

[0057] Figure 18 Schematic structural diagram of a locking and holding member of a locking mechanism provided in some other embodiments of the present application;

[0058] Figure 19 Schematic structural diagram of an unlocking and locking mechanism provided in some other embodiments of the present application;

[0059] Figure 20 Schematic structural diagram of a locking member of a locking mechanism provided in some other embodiments of the present application;

[0060] Figure 21 Schematic diagram of a locking mechanism during the unlocking and locking process provided in some other embodiments of the present application;

[0061] Figure 22 Schematic diagram of a battery swapping station provided in some embodiments of the present application.

[0062] Explanation of reference numerals is as follows:

[0063] 1. Locking mechanism;

[0064] 11. Base; 111. Mounting seat; 1111. Second through hole; 111a. Second wall; 112. Cover plate; 1121. First through hole; 1122. Fourth limiting structure; 1123. Groove; 1124. Cover plate convex part; 1125. Mounting hole; 112a. First wall; 11a. Accommodating cavity;

[0065] 12. Locking member; 121. Shaft body part; 122. Flange part; 123. Locking part; 124. First limiting structure; 125. First limiting boss; 126. Guiding part; 127. Driving part;

[0066] 13. Locking and holding member; 131. Second limiting structure; 132. Third limiting structure; 133. Sealing main body; 134. Second limiting boss; 135. Sealing through hole; 136. First mating structure;

[0067] 14. Elastic member; 15. Gasket; 151. Third through-hole; 152. Accommodating groove; 16. Lubricating material;

[0068] 2. Connecting member; 21. Threaded hole; 22. Connecting body; 23. Connecting flange; 2a. Target component;

[0069] 3. Locking and unlocking mechanism; 31. Engaging portion; 311. Card slot; 32. Supporting portion; 321. Avoidance channel; 33. Connecting end; 34. Second mating structure;

[0070] 4. Vehicle; 41. Battery; 411. Box body; 5. Vehicle body; 6. Cover body;

[0071] 7. Limiting member; 71. First limiting plate; 711. First channel; 72. Second limiting plate; 721. Second channel; 722. Limiting sub-plate; 723. Limiting slot; 73. Connecting plate;

[0072] 8. Vehicle body structural member;

[0073] 9. Battery swapping station; 91. Support platform; 92. Battery bin; 93. Battery swapping equipment; 94. Stacker;

[0074] P1. First convex portion; P2. Second convex portion; P3. Mating convex portion; R1. First concave portion; R2. Second concave portion; R3. Mating concave portion;

[0075] X. Second direction; Y. Third direction; Z. First direction. Detailed implementation manners

[0076] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present application.

[0077] Unless otherwise defined, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used in the description of the present application in the specification of the present application are only for the purpose of describing specific embodiments, and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the description, claims, and drawings of the present application are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description, claims, or drawings of the present application are used to distinguish different objects, rather than to describe a specific order or primary-secondary relationship.

[0078] References to "embodiments" in this application mean that specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments.

[0079] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "install", "connect", "attach" shall 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 direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0080] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0081] In the embodiments of this application, the same reference numerals represent the same components. For the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only exemplary descriptions and should not constitute any limitation to this application.

[0082] The term "a plurality of" as used in this application means two or more (including two).

[0083] In the embodiments of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximately parallelism as conventionally understood in engineering; at the same time, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximately perpendicularity as conventionally understood in engineering.

[0084] The battery is usually provided with a locking mechanism, and the locking mechanism includes a locking member, and the locking member can be used to lock to the vehicle body. Usually, the locking member can switch the locking state between the locking member and the vehicle body and the unlocking state between the locking member and the vehicle body by forward and reverse rotation. However, during the driving of the vehicle, the locking member may rotate due to vibration, thereby causing the risk of the separation of the locking member from the vehicle body and the detachment of the battery from the vehicle body, affecting the reliability of the vehicle.

[0085] In view of this, embodiments of the present application provide a locking mechanism that uses the locking and holding component of the locking mechanism to restrict the rotation of the locking member, thereby improving the stability of the connection between the locking member and the vehicle body, reducing the risk of battery detachment, and improving the reliability of the battery and the vehicle.

[0086] The locking mechanism disclosed in the embodiments of the present application can be but is not limited to being used for batteries or vehicles, and can also be used for other electrical equipment, such as drones, battery-powered vehicles, electric ships, etc. The locking mechanism can also be used for other devices or equipment that need to be locked to a target component.

[0087] Figure 1 FIG. 7 is a schematic diagram of the locking mechanism provided in some embodiments of the present application before unlocking; Figure 2 is Figure 1 a cross-sectional schematic diagram taken along the A-A direction; Figure 3 FIG. 13 is a schematic diagram of the locking mechanism provided in some embodiments of the present application during the unlocking process; Figure 4 FIG. 15 is another schematic diagram of the locking mechanism provided in some embodiments of the present application during the unlocking process; Figure 5 is Figure 1 an exploded schematic diagram of the structure shown; Figure 6 FIG. 21 is a schematic diagram of the structure of the locking member of the locking mechanism provided in some embodiments of the present application; Figure 7 FIG. 23 is a schematic diagram of one structure of the locking and holding component of the locking mechanism provided in some embodiments of the present application;

[0088] Figure 8 Another schematic diagram of the locking and holding component of the locking mechanism provided in some embodiments of the present application; Figure 9 FIG. 29 is a schematic diagram of the structure of the cover plate of the locking mechanism provided in some embodiments of the present application; Figure 10 FIG. 31 is a cross-sectional schematic diagram of the gasket of the locking mechanism provided in some embodiments of the present application.

[0089] Referring to Figures 1 to 10 , some embodiments of the present application provide a locking mechanism 1 that is used to connect to a target component 2a to fix the device including the locking mechanism 1 to the target component 2a.

[0090] As an example, the locking mechanism 1 can be used for a battery. As an example, the locking mechanism 1 is used to lock to the vehicle body of a vehicle so that the battery is fixed to the vehicle body.

[0091] In some embodiments, the locking mechanism 1 includes a base 11, a locking member 12, and a locking and holding component 13. As an example, the base 11 is used to carry and mount the locking member 12 and the locking and holding component 13.

[0092] In some embodiments, the locking member 12 cooperates with the base 11 and is used to establish locking or unlocking with the target component 2a.

[0093] In some embodiments, the locking and retaining member 13 can be coupled to the base 11 and the locking member 12 respectively, and the locking member 12 is retained in a locked state with the target member 2a via the coupling.

[0094] In some embodiments, during the process of establishing locking or unlocking, the locking and retaining member 13 rotates synchronously with the locking member 12.

[0095] By being coupled to the base 11 and the locking member 12, the locking and retaining member 13 can reduce the risk of loosening of the locking member 12. During the process of establishing locking or unlocking, the locking and retaining member 13 rotates synchronously with the locking member 12, thereby reducing the friction between the locking and retaining member 13 and the locking member 12 during rotation.

[0096] In some embodiments, the base 11 has a receiving cavity 11a. The base 11 includes a first wall 112a and a second wall 111a respectively located on both sides of the receiving cavity 11a along the first direction Z. The first wall 112a is provided with a first through hole 1121 communicating with the receiving cavity 11a, and the second wall 111a is provided with a second through hole 1111 communicating with the receiving cavity 11a.

[0097] The base 11 can be of an integrally formed structure or assembled from a plurality of independently formed components.

[0098] As an example, the first direction Z can be parallel to the vertical direction. Optionally, the first wall 112a can be located below the second wall 111a.

[0099] The material of the base 11 can be metal or other high-strength materials. For example, the material of the base 11 can be steel, aluminum alloy or other materials.

[0100] As an example, the first through hole 1121 penetrates the first wall 112a along the first direction Z, and the second through hole 1111 penetrates the second wall 111a along the first direction Z. In the first direction Z, the first through hole 1121 and the second through hole 1111 at least partially overlap.

[0101] The first through hole 1121 can be a round hole, a square hole or a hole of other shapes. The second through hole 1111 can be a round hole, a square hole or a hole of other shapes.

[0102] Exemplarily, both the first through hole 1121 and the second through hole 1111 are round holes. The aperture of the first through hole 1121 can be greater than, less than or equal to the aperture of the second through hole 1111.

[0103] In some embodiments, the locking member 12 is movably disposed on the base 11 along the first direction Z.

[0104] The locking member 12 can be directly connected to the base 11 or indirectly connected to the base 11 through other components.

[0105] In some embodiments, the locking member 12 includes a shaft body portion 121, and an anti-rotation structure is provided between at least a part of the shaft body portion 121 and the locking and holding member 13.

[0106] In some embodiments, the locking member 12 is movably disposed on the base 11 along the first direction Z. The locking member 12 includes a driving portion 127, a shaft body portion 121, and a locking portion 123 that are sequentially disposed along the first direction Z. The shaft body portion 121 is configured to pass through the first through hole 1121. The locking portion 123 is opposite to the second through hole 1111 along the first direction Z. The locking member 12 can lock the locking portion 123 extending out of the second through hole 1111 to the target component 2a by rotation or release the locking between the locking portion 123 and the target component 2a by rotation. The driving portion 127 is used to connect to an external unlocking and locking mechanism 3.

[0107] Exemplarily, the rotation axis of the locking member 12 is parallel to the first direction Z.

[0108] The shaft body portion 121 and the locking portion 123 can be directly connected or indirectly connected through other parts of the locking member 12.

[0109] As an example, the shaft body portion 121 can extend along the first direction Z, and it can guide the movement of the locking and holding member 13. The driving portion 127 can be used to connect to an external unlocking and locking mechanism 3 to transmit the torque from the unlocking and locking mechanism 3. The unlocking and locking mechanism 3 can drive the driving portion 127 to rotate and translate along the first direction Z. The shaft body portion 121 can extend out of the base 11 through the first through hole 1121 to facilitate the connection between the driving portion 127 and the unlocking and locking mechanism 3.

[0110] The locking portion 123 can be locked to the target component 2a by snap connection, threaded connection, or other means.

[0111] In some embodiments, the locking and holding member 13 is received in the receiving cavity 11a and sleeved on the shaft body portion 121. The locking and holding member 13 is configured to abut against the first wall 112a and cover at least a part of the first through hole 1121.

[0112] The locking and holding member 13 can cover at least a part of the second through hole 1111, thereby reducing impurities entering the receiving cavity 11a through the second through hole 1111, reducing the risk of corrosion of the locking portion 123, extending the service life of the locking portion 123, and improving the connection stability between the locking portion 123 and the target component 2a.

[0113] As an example, in the first direction Z, the locking and holding member 13 covers the gap between the shaft body portion 121 and the hole wall of the first through hole 1121.

[0114] In some embodiments, the locking and holding member 13 is capable of moving relative to the first wall 112a and the shaft body portion 121 in a first direction Z, and the first wall 112a is configured to restrict the rotation of the shaft body portion 121 through the locking and holding member 13.

[0115] When the locking and holding member 13 abuts against the first wall 112a, the first wall 112a restricts the rotation of the shaft body portion 121 through the locking and holding member 13.

[0116] In some examples, when the locking and holding member 13 abuts against the first wall 112a in the first direction Z, the first wall 112a is relatively fixed to the locking and holding member 13 in the rotation direction of the shaft body portion 121, and the locking and holding member 13 is relatively fixed to the shaft body portion 121 in the rotation direction of the shaft body portion 121.

[0117] Optionally, when the locking and holding member 13 abuts against the first wall 112a, the first wall 112a is snap-connected to the locking and holding member 13 to restrict the rotation of the locking and holding member 13; alternatively, when the locking and holding member 13 abuts against the first wall 112a, the first wall 112a restricts the rotation of the locking and holding member 13 by magnetic force.

[0118] Optionally, the locking and holding member 13 is snap-connected to the shaft body portion 121 to restrict the rotation of the shaft body portion 121.

[0119] In some embodiments, along the first direction Z, the projection of the driving portion 127 is located within the projection of the shaft body portion 121. The driving portion 127 is not likely to interfere with the structure of the unlocking and locking mechanism 3 for pushing the locking and holding member 13.

[0120] Refer to Figure 1 and Figure 2 When it is necessary to release the locking between the locking member 12 and the target component 2a, the external unlocking and locking mechanism 3 can first push the locking and holding member 13 in the first direction Z to separate the locking and holding member 13 from the first wall 112a. The first wall 112a no longer restricts the rotation of the shaft body portion 121; then, the unlocking and locking mechanism 3 drives the driving portion 127 to rotate so that the locking portion 123 rotates and disengages from the target component 2a, thereby releasing the locking between the locking mechanism 1 and the target component 2a. After the unlocking is completed, the unlocking and locking mechanism 3 can move in the first direction Z away from the locking and holding member 13, so as to separate from the locking member 12 and the locking and holding member 13.

[0121] Exemplarily, the locking and holding member 13 can abut against the first wall 112a under the action of gravity or the acting force of other components. The first wall 112a restricts the rotation of the shaft body portion 121 through the locking and holding member 13 again.

[0122] Correspondingly, when it is necessary to lock the locking member 12 to the target member 2a, the unlocking and locking mechanism 3 can first push the locking and holding member 13 along the first direction Z to separate the locking and holding member 13 from the first wall 112a. The first wall 112a no longer restricts the rotation of the shaft body portion 121; then, the unlocking and locking mechanism drives the driving portion 127 to rotate, so that the locking portion 123 rotates and locks to the target member 2a. After the locking is completed, the unlocking and locking mechanism 3 can move along the first direction Z away from the locking and holding member 13, so as to separate from the locking member 12 and the locking and holding member 13. The locking and holding member 13 can abut against the first wall 112a under the action of gravity or other members, and the first wall 112a restricts the rotation of the shaft body portion 121 again through the locking and holding member 13.

[0123] In the embodiment of the present application, the locking and holding member 13 can, while playing a sealing role, restrict the rotation of the shaft body portion 121 through cooperation with the first wall 112a, thereby improving the stability of the connection between the locking member 12 and the vehicle body, reducing the risk of battery detachment, and improving the reliability of the battery and the vehicle. To unlock the locking member 12, it is necessary to first push the locking and holding member 13, which can improve the anti-theft ability of the battery. Along the first direction Z, the projection of the driving portion 127 is located within the projection of the shaft body portion 121. When unlocking the locking member 12, the driving portion 127 is not likely to interfere with the structure of the unlocking and locking mechanism 3 for pushing the locking and holding member 13.

[0124] In some embodiments, during the process of establishing locking or unlocking, the locking and holding member 13 is configured to rotate synchronously with the locking member 12.

[0125] During the process of locking the locking portion 123 to the target member 2a and the process of unlocking the locking portion 123 from the target member 2a, the locking member 12 needs to rotate. During the rotation of the locking member 12, the locking and holding member 13 can rotate synchronously with the locking member 12, which can reduce the friction between the locking and holding member 13 and the locking member 12, slow down the wear of the locking and holding member 13 and the locking member 12, improve the sealing performance, and extend the service life of the locking mechanism 1.

[0126] In some embodiments, the contour of the projection of the driving portion 127 is different from the contour of the projection of the shaft body portion 121. The driving portion 127 and the shaft body portion 121 have different shapes, and the unlocking and locking mechanism 3 needs to be adapted to both the driving portion 127 and the shaft body portion 121 to achieve unlocking, which can improve the anti-theft ability.

[0127] In some embodiments, the contour of the projection of the driving portion 127 along the first direction Z is a non-regular polygon.

[0128] Exemplarily, the profile of the projection of the driving part 127 along the first direction Z can be rectangular, trapezoidal, star-shaped, or other polygons with irregular shapes. Optionally, the star shape can be a pentagram, a hexagram, etc.

[0129] The driving part 127 has an irregular shape, and only a specific structure that meets the requirements can cooperate with the driving part 127, thereby further improving the anti-theft ability.

[0130] In some embodiments, when viewed from the side where the driving part 127 is located along the first direction Z, the driving part 127 is smaller than the shaft body part 121.

[0131] In some alternative embodiments, when viewed in the first direction Z, the driving part 127 can also be a regular polygon. Optionally, the driving part 127 is a hexagonal head.

[0132] In some embodiments, the locking member 12 further includes a flange portion 122 connecting the shaft body portion 121 and the locking portion 123. The flange portion 122 is received in the receiving cavity 11a and protrudes from the outer peripheral surface of the shaft body portion 121.

[0133] In some embodiments, the locking and holding member 13 at least partially overlaps with the flange portion 122 in the first direction Z. When the locking portion 123 is separated from the target member 2a, the locking and holding member 13 can stop the flange portion 122, reducing the risk of the locking member 12 falling off through the first through hole 1121.

[0134] In some embodiments, the flange portion 122 also protrudes from the outer peripheral surface of the locking portion 123.

[0135] In some embodiments, a first limiting structure 124 is provided on the outer peripheral surface of the shaft body portion 121, and a second limiting structure 131 is provided on the locking and holding member 13. The first limiting structure 124 and the second limiting structure 131 cooperate to limit the rotation of the locking and holding member 13 relative to the shaft body portion 121.

[0136] Exemplarily, the first limiting structure 124 and the second limiting structure 131 form an anti-rotation structure between the shaft body portion and the locking and holding member.

[0137] The first limiting structure 124 and the second limiting structure 131 can adopt various cooperation forms. For example, the first limiting structure 124 and the second limiting structure 131 are snap-fitted.

[0138] By providing the first limiting structure 124 and the second limiting structure 131, the relative rotation between the locking and holding member 13 and the shaft body portion 121 can be restricted, reducing the friction between the locking and holding member 13 and the locking member 12, slowing down the wear of the locking and holding member 13 and the locking member 12, and improving the sealing performance.

[0139] In some embodiments, one of the first limiting structure 124 and the second limiting structure 131 includes a first recess R1, and the other of the first limiting structure 124 and the second limiting structure 131 includes a first protrusion P1. At least a part of the first protrusion P1 is received in the first recess R1.

[0140] The first protrusion P1 may be one or multiple. The first recess R1 may be one or multiple.

[0141] In some examples, the first limiting structure 124 includes the first protrusion P1, the second limiting structure 131 includes the first recess R1, and the first protrusion P1 is inserted into the first recess R1 to limit the relative rotation of the locking and holding member 13 and the shaft body portion 121.

[0142] In some other examples, the first limiting structure 124 includes the first recess R1, the second limiting structure 131 includes the first protrusion P1, and the first protrusion P1 is inserted into the first recess R1 to limit the relative rotation of the locking and holding member 13 and the shaft body portion 121.

[0143] In still some other examples, the first limiting structure 124 includes the first protrusion P1 and the first recess R1, the second limiting structure 131 includes the first protrusion P1 and the first recess R1. The first protrusion P1 of the first limiting structure 124 is inserted into the first recess R1 of the second limiting structure 131, and the first protrusion P1 of the second limiting structure 131 is inserted into the first recess R1 of the first limiting structure 124.

[0144] The shaft body portion 121 and the locking and holding member 13 realize the relative position fixation in the rotation direction through the matching structure of the first protrusion P1 and the first recess R1, reducing the frictional wear between the shaft body portion 121 and the locking and holding member 13.

[0145] In some embodiments, the dimension of the first limiting structure 124 along the first direction Z is greater than the stroke of the relative movement of the locking and holding member 13 and the shaft body portion 121 along the first direction Z. Exemplarily, the first direction Z is parallel to the axial direction of the shaft body portion 121.

[0146] The stroke of the relative movement of the locking and holding member 13 and the shaft body portion 121 along the first direction Z may refer to: during the locking process and the unlocking process of the locking mechanism 1, the maximum displacement amount of the relative movement of the locking and holding member 13 and the shaft body portion 121 along the first direction Z.

[0147] When the locking and holding member 13 moves relative to the shaft body portion 121 along the first direction Z, the first limiting structure 124 can remain in cooperation with the second limiting structure 131, thereby reducing the rotation of the locking and holding member 13 relative to the shaft body portion 121.

[0148] In some embodiments, the first limiting structure 124 includes a first protrusion P1 extending along the first direction Z. The second limiting structure 131 includes a first recess R1. In the first direction Z, the size of the first protrusion P1 of the first limiting structure 124 is greater than the size of the first recess R1 of the second limiting structure 131.

[0149] In some embodiments, the first limiting structure 124 and the second limiting structure 131 are in spline fit. The spline fit can increase the contact surface between the locking and holding member 13 and the shaft body portion 121, reduce stress concentration, and increase the difficulty of relative rotation between the locking and holding member 13 and the shaft body portion 121. At the same time, the spline fit has good directivity and reduces the risk of jamming when the locking and holding member 13 and the driving member move relative to each other along the first direction Z.

[0150] It can be understood that the first limiting structure 124 includes a plurality of first protrusions P1 arranged at intervals, and a first recess R1 is formed between adjacent first protrusions P1; the second limiting structure 131 includes a plurality of first protrusions P1 arranged at intervals, and a first recess R1 is formed between adjacent first protrusions P1. The plurality of first protrusions P1 of the first limiting structure 124 constitute an external spline of the shaft body portion 121, and the plurality of first protrusions P1 of the second limiting structure 131 constitute an internal spline of the locking and holding member 13.

[0151] In some embodiments, the locking and holding member 13 is provided with a third limiting structure 132, and the first wall 112a is provided with a fourth limiting structure 1122. The third limiting structure 132 and the fourth limiting structure 1122 cooperate to limit the rotation of the locking and holding member 13 relative to the first wall 112a. Exemplarily, the locking and holding member 13 and the base 11 are coupled through the third limiting structure 132 and the fourth limiting structure 1122.

[0152] The third limiting structure 132 and the fourth limiting structure 1122 can adopt various cooperation forms. For example, the third limiting structure 132 and the fourth limiting structure 1122 are in snap-fit.

[0153] By providing the third limiting structure 132 and the fourth limiting structure 1122, the relative rotation between the first wall 112a and the locking and holding member 13 can be restricted, so that the first wall 112a can limit the rotation of the shaft body portion 121 through the locking and holding member 13, thereby reducing the risk of loosening of the connection between the locking member 12 and the target component 2a caused by the rotation of the shaft body portion 121, improving the stability of the battery, and reducing the risk of battery detachment.

[0154] In some embodiments, one of the third limiting structure 132 and the fourth limiting structure 1122 includes a second protrusion P2, and the other of the third limiting structure 132 and the fourth limiting structure 1122 includes a second recess R2. At least a part of the second protrusion P2 is received in the second recess R2.

[0155] The second convex portion P2 may be one or more. The second concave portion R2 may be one or more.

[0156] In some examples, the third limiting structure 132 includes a second convex portion P2, the fourth limiting structure 1122 includes a second concave portion R2, and the second convex portion P2 is inserted into the second concave portion R2 to limit the relative rotation of the locking and holding member 13 and the first wall 112a.

[0157] In other examples, the third limiting structure 132 includes a second concave portion R2, the fourth limiting structure 1122 includes a second convex portion P2, and the second convex portion P2 is inserted into the second concave portion R2 to limit the relative rotation of the locking and holding member 13 and the first wall 112a.

[0158] In still other examples, the third limiting structure 132 includes a second convex portion P2 and a second concave portion R2, the fourth limiting structure 1122 includes a second convex portion P2 and a second concave portion R2, the second convex portion P2 of the third limiting structure 132 is inserted into the second concave portion R2 of the fourth limiting structure 1122, and the second convex portion P2 of the fourth limiting structure 1122 is inserted into the second concave portion R2 of the third limiting structure 132.

[0159] The first wall 112a and the locking and holding member 13 achieve the relative position fixation in the rotation direction through the cooperation structure of the second convex portion P2 and the second concave portion R2, so that the first wall 112a can limit the rotation of the shaft body portion 121 through the locking and holding member 13, thereby improving the stability of the connection between the locking member 12 and the vehicle body and reducing the risk of battery detachment.

[0160] In some embodiments, the third limiting structure 132 and the fourth limiting structure 1122 are spline-fitted. The spline fit can increase the contact surface between the locking and holding member 13 and the first wall 112a, increase the difficulty of relative rotation between the locking and holding member 13 and the first wall 112a, and thereby improve the stability of the connection between the locking member 12 and the vehicle body.

[0161] It can be understood that the third limiting structure 132 includes a plurality of second convex portions P2 arranged at intervals, and a second concave portion R2 is formed between adjacent second convex portions P2; the fourth limiting structure 1122 includes a plurality of second convex portions P2 arranged at intervals, and a second concave portion R2 is formed between adjacent second convex portions P2. The plurality of second convex portions P2 of the third limiting structure 132 constitute the external spline of the locking and holding member 13, and the plurality of second convex portions P2 of the fourth limiting structure 1122 constitute the internal spline of the first wall 112a.

[0162] In some embodiments, a groove 1123 is provided on a side of the first wall 112a facing the second through hole 1111. The first through hole 1121 penetrates the bottom wall of the groove 1123. At least part of the locking and holding member 13 is received in the groove 1123, and a fourth limiting structure 1122 is formed on the side wall of the groove 1123.

[0163] The groove 1123 can accommodate at least part of the locking and holding member 13, thereby improving space utilization. The bottom wall of the groove 1123 can support the locking and holding member 13, thereby reducing the risk of the locking and holding member 13 coming out of the accommodation cavity 11a. The fourth limiting structure 1122 is provided on the side wall of the groove 1123, which facilitates the cooperation between the fourth limiting structure 1122 and the third limiting structure 132.

[0164] In some embodiments, the groove 1123 is a tapered groove, and the large end of the groove 1123 faces away from the bottom wall of the groove 1123. The tapered groove can play a guiding role in guiding the cooperation between the fourth limiting structure 1122 and the third limiting structure 132.

[0165] In some embodiments, the locking and holding member 13 is generally a tapered structure. Second convex portions P2 and second concave portions R2 are provided on the conical surface of the locking and holding member 13.

[0166] In some embodiments, the locking mechanism 1 further includes an elastic member 14. The elastic member 14 is sleeved on the shaft body portion 121 and is clamped between the flange portion 122 and the locking and holding member 13 in the first direction Z.

[0167] The elastic member 14 includes, but is not limited to, a spring, a sleeve made of an elastic material, or other elastic components.

[0168] The elastic member 14 can apply an elastic force to the locking and holding member 13 to tightly press the locking and holding member 13 against the first wall 112a, so that the first wall 112a can limit the rotation of the shaft body portion 121 through the locking and holding member 13, reducing the risk of the connection between the locking member 12 and the target component 2a becoming loose due to the rotation of the shaft body portion 121, and improving the stability of the battery. When the battery vibrates, the elastic member 14 can limit the locking and holding member 13, reducing the risk of impurities entering the accommodation cavity 11a due to the locking and holding member 13 detaching from the first wall 112a.

[0169] When the unlocking and locking mechanism 3 pushes the locking and holding member 13 along the first direction Z, the locking and holding member 13 squeezes the elastic member 14; the elastic member 14 can be compressed and deformed. By providing the elastic member 14, the anti-theft ability of the battery can also be improved.

[0170] In some embodiments, the elastic member 14 includes a spring. The shaft body portion 121 passes through the spring.

[0171] In some embodiments, the locking member 12 further includes a first limiting boss 125 disposed around the shaft body portion 121. The first limiting boss 125 is connected to the flange portion 122, and one end of the elastic member 14 abutted against the flange portion 122 surrounds the first limiting boss 125.

[0172] The first limiting boss 125 can limit the elastic member 14, reduce the offset of the elastic member 14, and improve stability.

[0173] In some embodiments, in the radial direction of the shaft body portion 121, the first limiting boss 125 protrudes from the first convex portion P1. The first limiting boss 125 has a larger diameter, which can effectively limit the elastic member 14.

[0174] In some embodiments, the outer diameter of the first limiting boss 125 is slightly smaller than the inner diameter of the elastic member 14.

[0175] In some embodiments, the locking and holding member 13 includes a sealing body 133 and a second limiting boss 134. The second limiting boss 134 protrudes from a side of the sealing body 133 facing the flange portion 122. The shaft body portion 121 passes through the sealing body 133 and the second limiting boss 134, and one end of the elastic member 14 abutted against the sealing body 133 surrounds the second limiting boss 134.

[0176] The second limiting boss 134 can limit the elastic member 14, reduce the offset of the elastic member 14, and improve stability.

[0177] In some embodiments, a third limiting structure 132 is disposed on the sealing body 133.

[0178] In some embodiments, the locking and holding member 13 is provided with a sealing through hole 135. The sealing through hole 135 penetrates the sealing body 133 and the second limiting boss 134 along the first direction Z, and the shaft body portion 121 passes through the sealing through hole 135.

[0179] The first convex portion P1 and the second concave portion R2 of the second limiting structure 131 are formed on the hole wall of the sealing through hole 135.

[0180] In some embodiments, the elastic member 14 includes a spring. The spring has low cost, good elasticity, and is easy to assemble.

[0181] In some embodiments, the locking member 12 further includes a guiding portion 126. The guiding portion 126 is connected to an end of the locking portion 123 away from the shaft body portion 121. The cross-section of the guiding portion 126 perpendicular to the first direction Z gradually decreases in a direction away from the locking portion 123. Exemplarily, the guiding portion 126 is conical, pyramidal, frustum-shaped or prismatic.

[0182] The guiding portion 126 can guide the locking portion 123 to be connected to the target component 2a. By providing the guiding portion 126, the difficulty of connecting the locking portion 123 to the target component 2a can be reduced.

[0183] In some embodiments, the locking portion 123 is threadedly connected to the target component 2a. Exemplarily, the locking portion 123 has an external thread.

[0184] In some embodiments, the first limiting structure 124 is provided on the shaft body portion 121.

[0185] In some embodiments, the base 11 includes a mounting seat 111 and a cover plate 112. The mounting seat 111 includes a second wall 111a. The mounting seat 111 has an opening at one end away from the second wall 111a along the first direction Z. The cover plate 112 is connected to the mounting seat 111 and covers the opening. The cover plate 112 and the mounting seat 111 define a receiving cavity 11a. The cover plate 112 includes a first wall 112a.

[0186] The mounting seat 111 and the cover plate 112 are separately provided, which can facilitate the assembly of the locking and holding component 13 and the locking member 12.

[0187] In some embodiments, the cover plate 112 can be connected to the mounting seat 111 by threaded connection, welding, snap connection, bonding or other means.

[0188] In some embodiments, the side of the cover plate 112 facing the base 11 may have a cover plate convex portion 1124. The cover plate convex portion 1124 can be inserted into the opening of the base 11. The cover plate convex portion 1124 can play a positioning role. Exemplarily, the cover plate convex portion 1124 can be the side wall of the groove 1123.

[0189] In some embodiments, the cover plate 112 is detachably connected to the mounting seat 111 to facilitate maintenance.

[0190] In some embodiments, the cover plate 112 is provided with a mounting hole 1125. A bolt can pass through the mounting hole 1125 and fasten the cover plate 112 to the mounting seat 111.

[0191] In some embodiments, the locking mechanism 1 further includes a gasket 15. The gasket 15 is fixed to the second wall 111a and separates the second wall 111a from the flange portion 122. The gasket 15 is provided with a third through hole 151. The third through hole 151 is opposite to the second through hole 1111 along the first direction Z. The locking portion 123 can pass through the third through hole 151.

[0192] The gasket 15 can separate the flange portion 122 from the second wall 111a, thereby avoiding the direct extrusion of the flange portion 122 against the second wall 111a during the repeated locking and unlocking processes of the locking mechanism 1, reducing the wear between the flange portion 122 and the second wall 111a, increasing the service life of the locking member 12 and the base 11, and enhancing the reliability.

[0193] In some embodiments, the gasket 15 is a wear-resistant steel gasket.

[0194] In some embodiments, the gasket 15 is fixed to the second wall 111a, thereby maintaining the position of the gasket 15 in the unlocked state and reducing the risk of the gasket 15 moving up and down in the receiving cavity 11a.

[0195] In some embodiments, the gasket 15 is bonded to the second wall 111a.

[0196] In some embodiments, when the flange portion 122 is in close contact with the gasket 15, the locking member 12 moves into place, and the locking portion 123 locks with the target component 2a.

[0197] In some embodiments, the inner wall of the third through hole 151 is provided with a receiving groove 152. The locking mechanism 1 further includes a lubricating material 16 received in the receiving groove 152.

[0198] There may be one or more receiving grooves 152. Exemplarily, the receiving groove 152 is an annular groove.

[0199] Exemplarily, the lubricating material 16 may include lubricating oil or grease.

[0200] The lubricating material 16 can lubricate the locking portion 123, improving the smoothness and convenience of the locking portion 123 during repeated disassembly and assembly processes. By providing the receiving groove 152, a storage space can be provided for the lubricating material 16.

[0201] Figure 11 Schematic structural diagram of a battery provided in some embodiments of the present application.

[0202] As Figure 11 shown, embodiments of the present application further provide a battery 41, which includes the locking mechanism 1 provided in any of the foregoing embodiments.

[0203] In some embodiments, the battery 41 includes a box body 411 and battery cells (not shown) received in the box body 411, and the locking mechanism 1 is installed on the box body 411.

[0204] The battery cells can be lithium-ion battery cells, sodium-ion battery cells, sodium-lithium-ion battery cells, lithium-metal battery cells, sodium-metal battery cells, lithium-sulfur battery cells, magnesium-ion battery cells, nickel-metal hydride battery cells, nickel-cadmium battery cells, lead-acid battery cells, etc.

[0205] In some embodiments, the mounting base 111 is fixed to the box body 411.

[0206] In some embodiments, the box body 411 includes longitudinal beams and cross beams, and the mounting base 111 can be mounted on the longitudinal beams or the cross beams.

[0207] Optionally, the mounting base 111 is mounted on the longitudinal beam or the cross beam by means of threaded connection, riveting, welding or other methods.

[0208] In some embodiments, the battery 41 includes a plurality of locking mechanisms 1.

[0209] Figure 12 Schematic structural diagram of a vehicle provided by some embodiments of the present application; Figure 13 Schematic structural diagram of the cover body of a vehicle provided by some embodiments of the present application; Figure 14 Schematic structural diagram of the connecting member and the limiting member of a vehicle provided by some embodiments of the present application; Figure 15 is Figure 2 Enlarged schematic diagram at the square box.

[0210] Referring to Figures 1 - 5 and Figures 12 - 15 , embodiments of the present application further provide a vehicle 4, which includes a vehicle body 5 and a battery 41. The vehicle body 5 includes a connecting member 2. The base 11 is disposed on one side of the connecting member 2 along the first direction Z, and the locking member 12 is locked to the connecting member 2.

[0211] Exemplarily, the connecting member 2 may be a target member 2a connected to the locking portion 123.

[0212] The vehicle 4 of the present application can realize battery swapping, so as to quickly supplement electric energy.

[0213] Optionally, the first direction Z is parallel to the vertical direction. The base 11 is located below the connecting member 2.

[0214] In some embodiments, the connecting member 2 includes a threaded hole 21, and the locking member 12 extends into the threaded hole 21 and is threadedly connected to the connecting member 2.

[0215] Exemplarily, the locking portion 123 is provided with an external thread, and the locking portion 123 extends into the threaded hole 21 and is threadedly connected to the connecting member 2.

[0216] The connection strength of the threaded connection is high, and it is convenient for disassembly and assembly.

[0217] In some embodiments, the vehicle body 5 further includes a cover body 6, and the cover body 6 is disposed on a side of the connecting member 2 away from the base 11 and covers the threaded hole 21.

[0218] The cover body 6 can play a sealing role, reduce impurities entering the threaded hole 21, lower the risk of corrosion of the internal thread of the connecting member 2 and the external thread of the locking portion 123, and improve the stability of the screw connection.

[0219] Exemplarily, the cover body 6 and the locking and holding member 13 can be sealed from both sides to improve the sealing performance.

[0220] In some embodiments, the cover body 6 and the connecting member 2 are independently formed, and the two are fixed by welding, riveting, snap-fitting or other means.

[0221] Optionally, both the cover body 6 and the connecting member 2 are metal parts, and the cover body 6 and the connecting member 2 are fixed by welding or riveting. The embodiments of the present application can reduce the installation difficulty of the cover body 6 and improve the convenience of the installation process of the cover body 6.

[0222] Alternatively, the cover body 6 can be a non-metal part, which can be fixed to the connecting member 2 by injection molding or snap-fitting. Using non-metal materials can reduce the weight and meet the lightweight requirements.

[0223] In some other embodiments, the cover body 6 and the connecting member 2 are integrally formed.

[0224] In some embodiments, the hardness of the connecting member 2 is 430HV - 480HV. The connecting member 2 has a relatively high hardness and good wear resistance, which can improve the reliability of repeated disassembly and assembly of the connecting member 2 and the locking member 12.

[0225] In some embodiments, the locking member 12 is a bolt and the connecting member 2 is a nut.

[0226] In some embodiments, the vehicle body 5 further includes a limiting member 7, and the connecting member 2 is floatingly connected to the limiting member 7.

[0227] Exemplarily, the floating connection may mean that the connecting member 2 can make a small amount of movement relative to the limiting member 7.

[0228] Exemplarily, the connecting member 2 can float relative to the limiting member 7 in one direction or in multiple directions.

[0229] During the process of locking the locking member 12 to the connecting member 2, the relative positions of the connecting member 2 and the locking member 12 may deviate (for example, due to the inclination of the vehicle body 5); at this time, the connecting member 2 can float when subjected to the force of the locking member 12 to adjust the relative positions of the connecting member 2 and the locking member 12, so as to realize the locking of the connecting member 2 and the locking member 12.

[0230] In some embodiments, the locking member 12 is provided with a guiding portion 126. Even if the position of the connecting member 2 is offset, the guiding portion 126 can be inserted into the threaded hole 21 and drive the connecting member 2 to float, so that the locking portion 123 is aligned with and engaged with the threaded hole 21.

[0231] In some embodiments, the limiting member 7 includes a first limiting plate 71, a second limiting plate 72, and a connecting plate 73. The second limiting plate 72 is located on the side of the first limiting plate 71 away from the base 11 along the first direction Z. The connecting plate 73 connects the first limiting plate 71 and the second limiting plate 72. The first limiting plate 71 is provided with a first channel 711, and the second limiting plate 72 is provided with a second channel 721. The connecting member 2 includes a connecting body 22 and a connecting flange 23 protruding from the outer periphery of the connecting body 22.

[0232] In the first direction Z, at least a part of the connecting flange 23 is located between the first limiting plate 71 and the second limiting plate 72. The locking member 12 passes through the first channel 711 and is connected to the connecting body 22. The connecting body 22 passes through the second channel 721. In at least one direction perpendicular to the first direction Z, the size of the second channel 721 is larger than the size of the connecting body 22.

[0233] The first channel 711 can avoid the locking member 12 so that the locking portion 123 of the locking member 12 can be fixed to the connecting body 22. The first limiting plate 71 and the second limiting plate 72 can limit the connecting flange 23 in the first direction Z, and the second limiting plate 72 can limit the connecting body 22 from the outer periphery, thereby reducing the risk of the connecting member 2 falling off the limiting member 7. In at least one direction perpendicular to the first direction Z, the connecting body 22 can float in the second channel 721.

[0234] In some embodiments, the second limiting plate 72 includes two limiting sub-plates 722 arranged along the second direction X. The connecting plate 73 is two. The two limiting sub-plates 722 are respectively connected to the first limiting plate 71 through the two connecting plates 73. The second direction X is perpendicular to the first direction Z. The limiting sub-plate 722 includes a limiting groove 723. The limiting grooves 723 of the two limiting sub-plates 722 face each other along the second direction X. The second channel 721 includes two limiting grooves 723.

[0235] The two limiting sub-plates 722 can abut against each other along the second direction X or can be arranged at intervals along the second direction X. The two limiting sub-plates 722 can be connected or separated.

[0236] In some embodiments, the limiting member 7 can be formed by bending.

[0237] The two limiting sub-plates 722 can limit the connecting body 22 in the second direction X. In the third direction Y, the two limiting sub-plates 722 can limit the connecting body 22.

[0238] In some embodiments, the vehicle body 5 further includes a vehicle body structural member 8, and the connecting member 2 and the base 11 are respectively located on both sides of the vehicle body structural member 8, and the connecting member 2 is connected to the vehicle body structural member 8.

[0239] Exemplarily, the vehicle body structural member 8 may be a cross beam, a longitudinal beam, a floor or other structural members of the vehicle body 5.

[0240] In some embodiments, the vehicle body structural member 8 includes a sill beam of the vehicle body 5. The sill beam has high structural strength, and installing the battery 41 on the sill beam can improve the stability of the battery 41.

[0241] In some embodiments, the limiting member 7 can be fixed to the vehicle body structural member 8 by screwing, riveting, welding or other means.

[0242] Figure 16 Structural schematic diagram of the locking and unlocking mechanism provided by some embodiments of the present application; Figure 17 is Figure 16 Cross-sectional schematic diagram of the locking and unlocking mechanism shown.

[0243] Referring to Figures 1 - 5 and Figures 16 - 17 , embodiments of the present application further provide a locking and unlocking mechanism 3, which is used to establish locking or unlocking between the locking member 12 of the locking mechanism 1 and the target component 2a. The locking and unlocking mechanism 3 includes an engaging portion 31 and a supporting portion 32 connected to each other. The supporting portion 32 is used to drive the locking holding member 13 to move and release the coupling between the locking holding member 13 and the base 11. The engaging portion 31 is configured to engage with the locking member 12 and drive the locking member 12 to rotate when the locking holding member 13 is decoupled from the base 11.

[0244] Exemplarily, the locking and unlocking mechanism 3 is used to lock the locking portion 123 to the target component 2a or release the locking between the locking portion 123 and the target component 2a. The locking and unlocking mechanism 3 is configured to be able to rotate and move along the first direction Z. The locking and unlocking mechanism 3 includes an engaging portion 31 and a supporting portion 32 arranged along the first direction Z. The supporting portion 32 is used to pass through the first through hole 1121 and drive the locking holding member 13 to move along the first direction Z. The engaging portion 31 is configured to engage with the driving portion 127 and drive the driving portion 127 to rotate when the locking holding member 13 is separated from the first wall 112a.

[0245] The supporting portion 32 may be one or multiple. In some examples, the supporting portion 32 may be one, and the supporting portion 32 has a cylindrical structure. In other examples, the supporting portion 32 may be multiple, and the multiple supporting portions 32 may be arranged at intervals along the rotation direction of the locking and unlocking mechanism 3.

[0246] For example, when the locking member 12 and the target component 2a need to be unlocked, the locking and unlocking mechanism 3 moves to the bottom of the base 11 and is opposite to the first through hole 1121; then, the locking and unlocking mechanism 3 moves upward along the first direction Z, and the support portion 32 contacts the locking and holding component 13 and lifts the locking and holding component 13 upward, so that the locking and holding component 13 is separated from the first wall 112a, and the locking and holding component 13 by the first wall 112a is released. As the locking and unlocking mechanism 3 continues to move, the engaging portion 31 engages with the driving portion 127, and then, the locking and unlocking mechanism 3 simultaneously drives the driving portion 127 to rotate and drives the driving portion 127 to move downward, so that the locking portion 123 rotates and disengages from the target component 2a, thereby releasing the locking mechanism 1 and the target component 2a. After unlocking is completed, the locking and unlocking mechanism 3 can move in the first direction Z in a direction away from the locking and holding component 13, so as to be separated from the locking member 12 and the locking and holding component 13. The locking and holding component 13 moves downward under the elastic force of the elastic member 14 and abuts against the first wall 112 a , thereby locking the shaft body 121 and reducing the risk of the shaft body 121 rotating.

[0247] Exemplarily, when the locking member 12 needs to be locked with the target component 2a, the locking and unlocking mechanism 3 moves to the bottom of the base 11 and is opposite to the first through hole 1121; then, the locking and unlocking mechanism 3 moves upward along the first direction Z, and the support portion 32 contacts the locking and holding component 13 and lifts the locking and holding component 13 upward, so that the locking and holding component 13 is separated from the first wall 112a, and the locking and holding component 13 is released by the first wall 112a. As the locking and unlocking mechanism 3 continues to move, the engaging portion 31 engages with the driving portion 127, and then the locking and unlocking mechanism 3 simultaneously drives the driving portion 127 to rotate and drives the driving portion 127 to move upward, so that the locking portion 123 rotates and locks to the target component 2a. After the locking is completed, the locking and unlocking mechanism 3 can move downward along the first direction Z to separate from the locking member 12 and the locking and holding component 13. The locking and holding component 13 can be pressed against the first wall 112 a under the elastic force of the elastic member 14 , and the first wall 112 a again limits the rotation of the shaft body 121 through the locking and holding component 13 , while achieving sealing.

[0248] In the embodiment of the present application, the support portion 32 can separate the first wall 112 a from the locking and holding component 13 before the engaging portion 31 engages with the driving portion 127 , thereby releasing the anti-rotation limit on the shaft body portion 121 .

[0249] The locking and unlocking mechanism 3 needs to be provided with a support portion 32 in order to unlock the locking member 12 , which can enhance the anti-theft capability of the battery 41 .

[0250] In some embodiments, the support portion 32 has a cylindrical structure. On the side of the engaging portion 31 facing the support portion 32, there is a card slot 311, and the card slot 311 communicates with an avoidance channel 321 formed by enclosing the cylindrical structure.

[0251] Setting the support portion 32 as a cylinder can increase the contact area between the support portion 32 and the locking and holding member 13, improve the uniformity of the force on the locking and holding member 13, and reduce the risk of the locking and holding member 13 getting stuck with the shaft body portion 121. The card slot 311 can accommodate the end of the shaft body portion 121 to achieve the clamping connection between the shaft body portion 121 and the engaging portion 31.

[0252] Exemplarily, the avoidance channel 321 is a cylindrical channel. When observing along the first direction Z, the diameter of the avoidance channel 321 is greater than the outer diameter of the shaft body portion 121, the diameter of the avoidance channel 321 is greater than the outer diameter of the driving portion 127, and the diameter of the avoidance channel 321 is smaller than the diameter of the locking and holding member 13.

[0253] Exemplarily, the outer diameter of the support portion 32 is smaller than the diameter of the first through hole 1121. The support portion 32 can pass through the first through hole 1121.

[0254] In some embodiments, the card slot 311 is used to accommodate the driving portion 127 of the shaft body portion 121.

[0255] In some embodiments, the dimension of the support portion 32 along the first direction Z is greater than the dimension of the card slot 311 along the first direction Z. The support portion 32 has a larger dimension, which can lift the locking and holding member 13 by a larger height, thereby reducing the risk of the locking and holding member 13 failing to disengage from the first wall 112a.

[0256] In some embodiments, when the shaft body portion 121 enters the avoidance channel 321, the support portion 32 is separated from the shaft body portion 121 and the support portion 32 is spaced apart from the first limiting structure 124, which can reduce friction.

[0257] In some embodiments, the unlocking and locking mechanism 3 further includes a connection end 33, and the connection end 33 is located on the side of the engaging portion 31 away from the support portion 32. The connection end 33 is used to connect to a power mechanism, such as a motor. The power mechanism is used to drive the unlocking and locking mechanism 3 to rotate and translate.

[0258] Figure 18 Schematic diagram of the structure of the locking and holding member of the locking mechanism provided in some other embodiments of the present application; Figure 19 Schematic diagram of the structure of the unlocking and locking mechanism provided in some other embodiments of the present application; Figure 20 Schematic diagram of the structure of the locking member of the locking mechanism provided in some other embodiments of the present application; Figure 21 Schematic diagram of the locking mechanism during the unlocking and locking process provided in some other embodiments of the present application.

[0259] Referring to Figures 18 to 21 , in some embodiments, a first mating structure 136 is provided on the side of the locking and holding member 13 facing the first through hole 1121.

[0260] The locking member 12 establishes or releases a lock with the target member 2a through the locking and unlocking mechanism 3. During the process of establishing or releasing the lock, the locking and holding member 13 can be coupled with the locking and unlocking mechanism 3 through the first mating structure 136 to keep the locking and holding member 13 and the locking member 12 rotating synchronously.

[0261] Exemplarily, the first mating structure 136 is used for snap-fitting with the locking and unlocking mechanism 3.

[0262] Exemplarily, the first mating structure 136 may include a protrusion, a recess, or other structures capable of engaging with the locking and unlocking mechanism 3.

[0263] By providing the first mating structure 136, the locking and holding member 13 can be engaged with the locking and unlocking mechanism 3; the locking and unlocking mechanism 3 can be locked with both the locking and holding member 13 and the locking member 12 to drive the locking and holding member 13 and the locking member 12 to rotate synchronously, thereby reducing the friction between the locking and holding member 13 and the locking member 12 during rotation.

[0264] In some embodiments, the locking and unlocking mechanism 3 further includes a second mating structure 34, which is provided at one end of the support portion 32 away from the engaging portion 31 and is used for plugging and mating with the locking and holding member 13.

[0265] By providing the second mating structure 34, the locking and holding member 13 can be engaged with the locking and unlocking mechanism 3; the locking and unlocking mechanism 3 can be locked with both the locking and holding member 13 and the locking member 12 to keep the locking and holding member 13 and the locking member 12 rotating synchronously, thereby reducing the friction between the locking and holding member 13 and the locking member 12 during rotation.

[0266] In some embodiments, the first mating structure 136 and the second mating structure 34 cooperate. One of the first mating structure 136 and the second mating structure 34 includes a mating convex portion P3, and the other includes a mating concave portion R3. The mating convex portion P3 can be inserted into the mating concave portion R3 to engage the locking and holding member 13 with the locking and unlocking mechanism 3.

[0267] In some examples, the first mating structure 136 includes a mating convex portion P3, the second mating structure 34 includes a mating concave portion R3, and the mating convex portion P3 is inserted into the mating concave portion R3.

[0268] In some other examples, the first mating structure 136 includes a mating recess R3, and the second mating structure 34 includes a mating protrusion P3. The mating protrusion P3 is inserted into the mating recess R3.

[0269] In still other examples, the first mating structure 136 includes a mating protrusion P3 and a mating recess R3, and the second mating structure 34 includes a mating protrusion P3 and a mating recess R3. The mating protrusion P3 of the first mating structure 136 is inserted into the mating recess R3 of the second mating structure 34, and the mating protrusion P3 of the second mating structure 34 is inserted into the mating recess R3 of the first mating structure 136.

[0270] In some embodiments, the first mating structure 136 includes a plurality of mating recesses R3, which are circumferentially spaced along the locking member 12. The plurality of mating recesses R3 can increase the contact area between the locking and holding member 13 and the locking and unlocking mechanism 3, reduce stress concentration, and reduce the risk of the locking and holding member 13 disengaging from the locking and unlocking mechanism 3.

[0271] As Figures 20 - 21 shown, in some embodiments, a section of the shaft body portion 121 near the flange portion 122 can be a smooth shaft without the first limiting structure 124. This can reduce the dimension of the first limiting structure 124 along the first direction Z, reduce the weight of the locking member 12, and reduce the forming difficulty of the locking member 12.

[0272] Alternatively, the shaft body portion 121 can also be a smooth shaft without the first limiting structure 124. This can reduce the dimension of the first limiting structure 124 along the first direction Z, reduce the weight of the locking member 12, and reduce the forming difficulty of the locking member 12. At this time, there is no limiting and holding structure between the locking and holding member 13 and the shaft body portion 121.

[0273] When the supporting portion 32 jacks up the locking and holding member 13, even if the second limiting structure 131 of the locking and holding member 13 disengages from the first limiting structure 124, or even if there is no limiting and holding structure between the locking and holding member 13 and the shaft body portion 121, the locking and holding member 13 can still rotate synchronously with the shaft body portion 121 under the drive of the locking and unlocking mechanism 3.

[0274] Figure 22 It is a schematic diagram of a battery swapping station provided by some embodiments of the present application.

[0275] Referring to Figure 22 , the embodiments of the present application further provide a battery swapping station 9, which includes the locking and unlocking mechanism 3 provided in any of the foregoing embodiments.

[0276] Exemplarily, the battery swapping station 9 can be used to replace the battery 41 of an electrical device. For example, it can be used to replace the battery 41 of a vehicle 4.

[0277] In some embodiments, the battery swapping station 9 includes a support platform 91, a battery compartment 92, and a battery swapping device 93. The support platform 91 is used to support the vehicle 4. The battery compartment 92 is used to store the battery 41 and charge the battery 41. The battery swapping device 93 is configured to be movable between the support platform 91 and the battery compartment 92. The battery swapping device 93 may include a locking and unlocking mechanism 3 and is used to replace the battery 41 of the vehicle 4.

[0278] Exemplarily, the battery swapping station 9 of the embodiment of the present application may replace the battery 41 according to the following steps: Ⅰ) After the vehicle 4 enters the support platform 91, the battery swapping device 93 can move to the lower side of the vehicle 4, and the locking and unlocking mechanism 3 releases the lock between the locking member 12 and the connecting member 2 and removes the battery 41 from the vehicle body 5; Ⅱ) The battery swapping device 93 transports the removed battery 41 to be charged to the charging position in the battery compartment 92 for charging and receives the fully charged battery 41 stored in the battery compartment 92; Ⅲ) The battery swapping device 93 moves to the lower side of the vehicle 4 with the fully charged battery 41, and the locking and unlocking mechanism 3 locks the locking member 12 of the fully charged battery 41 to the connecting member 2 of the vehicle body 5 to install the fully charged battery 41 on the vehicle 4; Ⅳ) The vehicle 4 leaves the support platform 91.

[0279] In some embodiments, a stacker 94 is provided in the battery compartment 92. The stacker 94 is used to transfer the battery 41 to be charged removed by the battery swapping device 93 to the charging position in the battery compartment 92 for charging and place the fully charged battery 41 stored in the battery compartment 92 on the battery swapping device 93.

[0280] In some embodiments, the support platform 91 includes a lifting mechanism. The lifting mechanism is used to lift the vehicle 4 to facilitate the battery swapping device 93 to move to the lower side of the vehicle 4.

[0281] Referring to Figures 1 to 5 , the embodiment of the present application provides a locking mechanism 1 for a battery 41, which includes a base 11, a locking member 12, a locking holding member 13, an elastic member 14, and a gasket 15.

[0282] The base 11 includes a mounting seat 111 and a cover plate 112. The mounting seat 111 is used to be mounted on the box body 411 of the battery 41. One end of the mounting seat 111 in the first direction Z has an opening, and the cover plate 112 is connected to the mounting seat 111 and covers the opening. The cover plate 112 and the mounting seat 111 define a receiving cavity 11a.

[0283] The cover plate 112 is provided with a first through hole 1121 communicating with the receiving cavity 11a. The mounting seat 111 includes a second wall 111a opposite to the cover plate 112 in the first direction Z. The second wall 111a is provided with a second through hole 1111 communicating with the receiving cavity 11a.

[0284] The locking member 12 includes a driving portion 127, a shaft portion 121, a flange portion 122, and a locking portion 123 that are sequentially arranged along the first direction Z. The flange portion 122 is received in the receiving cavity 11a and protrudes from the outer peripheral surface of the shaft portion 121. The shaft portion 121 passes through the first through hole 1121, and the locking portion 123 is opposite to the second through hole 1111 along the first direction Z. The driving portion 127 is used to connect with an external unlocking and locking mechanism 3.

[0285] The locking and holding member 13 is received in the receiving cavity 11a and sleeved on the shaft portion 121. The shaft portion 121 is splined to the locking and holding member 13, and the locking and holding member 13 and the shaft portion 121 can slide relative to each other along the first direction Z. The locking and holding member 13 and the shaft portion 121 are relatively fixed along the rotation direction of the shaft portion 121; during the unlocking and locking process of the locking mechanism 1, the locking and holding member 13 and the shaft portion 121 can rotate synchronously.

[0286] The elastic member 14 is sleeved on the shaft portion 121 and clamped between the flange portion 122 and the locking and holding member 13, so that the locking and holding member 13 abuts against the cover plate 112. The locking and holding member 13 is used to abut against the cover plate 112 along the first direction Z and is splined. The locking and holding member 13 covers at least a part of the first through hole 1121. The cover plate 112 can limit the rotation of the shaft portion 121 through the locking and holding member 13.

[0287] The locking portion 123 has an external thread. The locking member 12 can lock the locking portion 123 extending out of the second through hole 1111 to the connecting member 2 of the vehicle 4 by rotation or release the locking between the locking portion 123 and the connecting member 2 of the vehicle 4 by rotation.

[0288] The gasket 15 is received in the receiving cavity 11a and fixed to the second wall 111a to separate the second wall 111a from the flange portion 122. The locking portion 123 passes through the gasket 15.

[0289] Although the present application has been described with reference to the preferred embodiments, various improvements can be made to it and the components therein can be replaced with equivalents without departing from the scope of the present application. In particular, as long as there is no structural conflict, the various technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A locking mechanism, characterized in that, Comprising: A base; A locking member, cooperating with the base, for establishing or releasing a lock with a target component; A locking holding member, capable of being coupled to the base and the locking member respectively, and maintaining the locking member and the target component in a locked state via the coupling; Wherein, during the process of establishing the lock or the process of releasing the lock, the locking holding member and the locking member rotate synchronously.

2. The locking mechanism according to claim 1, characterized in that, The locking member includes a shaft body portion, and an anti-rotation structure is provided between at least a part of the shaft body portion and the locking holding member; and / or, The locking holding member includes a first mating structure, the locking member establishes or releases a lock with the target component through a locking and unlocking mechanism, and during the process of establishing the lock or the process of releasing the lock, the locking holding member can achieve synchronous rotation of the locking holding member and the locking member through the coupling of the first mating structure and the locking and unlocking mechanism.

3. The locking mechanism according to claim 2, wherein, A first limiting structure is provided on the outer peripheral surface of the shaft body portion, and a second limiting structure is provided on the locking holding member, and the first limiting structure cooperates with the second limiting structure to limit the rotation of the locking holding member relative to the shaft body portion; The dimension of the first limiting structure in the axial direction of the shaft body portion is greater than the stroke of the relative movement of the locking holding member and the shaft body portion in the axial direction.

4. The locking mechanism according to claim 2, wherein, The first mating structure of the locking holding member includes a plurality of mating recesses, and the plurality of mating recesses are arranged at intervals in the circumferential direction of the locking member.

5. The locking mechanism according to any one of claims 1 to 4, characterized in that, The base has a receiving cavity, the base includes a first wall and a second wall respectively located on both sides of the receiving cavity along a first direction, the first wall is provided with a first through hole communicating with the receiving cavity, and the second wall is provided with a second through hole communicating with the receiving cavity; The locking member is movably arranged on the base along the first direction, the locking member includes a driving portion, a shaft body portion and a locking portion arranged in sequence along the first direction, the shaft body portion is used to pass through the first through hole, the locking portion is opposite to the second through hole along the first direction, the locking member can lock the locking portion extending out of the second through hole to the target component by rotation or release the lock between the locking portion and the target component by rotation, and the driving portion is used to connect with an external locking and unlocking mechanism, and along the first direction, the projection of the driving portion is located within the projection of the shaft body portion; The locking holding member is received in the receiving cavity and sleeved on the shaft body portion, the locking holding member is used to abut against the first wall and cover at least a part of the first through hole, the locking holding member can move along the first direction relative to the first wall and the shaft body portion, and the first wall is configured to limit the rotation of the shaft body portion through the locking holding member.

6. The locking mechanism according to claim 5, wherein A groove is provided on one side of the first wall facing the second through hole, the first through hole penetrates the bottom wall of the groove, and at least a part of the locking holding member is received in the groove; The locking and holding member is provided with a third limiting structure, and the side wall of the groove is provided with a fourth limiting structure. The third limiting structure cooperates with the fourth limiting structure to limit the rotation of the locking and holding member relative to the first wall.

7. The locking mechanism according to claim 5 or 6, characterized in that The contour of the projection of the driving part is different from the contour of the projection of the shaft body part, and the contour of the projection of the driving part along the first direction is a non-regular polygon.

8. The locking mechanism according to any one of claims 5-7, characterized in that, The locking member further includes a flange portion connecting the shaft body portion and the locking portion. The flange portion is received in the receiving cavity and protrudes from the outer peripheral surface of the shaft body portion; The locking mechanism further includes a gasket. The gasket is fixed to the second wall and separates the second wall from the flange portion; The gasket is provided with a third through hole. The third through hole is opposite to the second through hole along the first direction, and the locking portion can pass through the third through hole.

9. The locking mechanism according to claim 8, wherein, The hole wall of the third through hole is provided with a receiving groove; The locking mechanism further includes a lubricating material received in the receiving groove.

10. The locking mechanism according to any one of claims 5-9, characterized in that, The locking member further includes a flange portion connecting the shaft body portion and the locking portion. The flange portion is received in the receiving cavity and protrudes from the outer peripheral surface of the shaft body portion; The locking mechanism further includes an elastic member. The elastic member is sleeved on the shaft body portion and is clamped between the flange portion and the locking and holding member in the first direction.

11. A battery, characterized in that, Comprising the locking mechanism according to any one of claims 1-10.

12. A vehicle, characterized in that, Comprising: A vehicle body, including a connecting member; The battery according to claim 11, wherein the base is disposed on one side of the connecting member along the first direction, and the locking member is locked to the connecting member.

13. The vehicle according to claim 12, wherein, The connecting member includes a threaded hole, and the locking member extends into the threaded hole and is threadedly connected to the connecting member; The vehicle body further includes a cover body. The cover body is disposed on a side of the connecting member away from the base and covers the threaded hole.

14. The vehicle according to claim 12 or 13, characterized in that, The vehicle body further includes a limiting member. The connecting member is floatingly connected to the limiting member.

15. The vehicle according to claim 14, characterized in that, The limiting member includes a first limiting plate, a second limiting plate and a connecting plate. The second limiting plate is located on a side of the first limiting plate away from the base along the first direction, and the connecting plate connects the first limiting plate and the second limiting plate; The first limiting plate is provided with a first channel, and the second limiting plate is provided with a second channel; The connecting member includes a connecting body and a connecting flange protruding from the outer periphery of the connecting body. In the first direction, at least a part of the connecting flange is located between the first limiting plate and the second limiting plate; The locking member passes through the first channel and is connected to the connecting body; The connecting body passes through the second channel; in at least one direction perpendicular to the first direction, the size of the second channel is larger than the size of the connecting body.

16. The vehicle according to any one of claims 12 to 15, characterized in that, The vehicle body further includes a vehicle body structural member. The connecting member and the base are respectively located on two sides of the vehicle body structural member, and the connecting member is connected to the vehicle body structural member; The vehicle body structural member includes a sill beam of the vehicle body.

17. An unlocking and locking mechanism, characterized in that, For establishing locking or unlocking between the locking member of the locking mechanism according to any one of claims 1-10 and a target component; The unlocking and locking mechanism includes an engaging portion and a supporting portion connected to each other. The supporting portion is configured to drive the locking and holding member to move and release the coupling between the locking and holding member and the base. The engaging portion is configured to engage with the locking member and drive the locking member to rotate when the coupling between the locking and holding member and the base is released.

18. The unlocking and locking mechanism according to claim 17, wherein The supporting portion is of a cylindrical structure. A card slot is provided on one side of the engaging portion facing the supporting portion, and the card slot communicates with an avoidance channel formed by enclosing the cylindrical structure.

19. The unlocking and locking mechanism according to claim 17 or 18, characterized in that, The unlocking and locking mechanism further includes a second mating structure, which is disposed at an end of the supporting portion away from the engaging portion and is used for plugging and mating with the locking and holding member.

20. A battery swapping station, characterized in that, Comprising the unlocking and locking mechanism according to any one of claims 17-19.

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