A battery pack replacement locking device for vehicle

Abstract

The utility model discloses a kind of battery pack of vehicle lock stop device, belong to vehicle battery swap technical field, including the first lock body for connecting vehicle and the second lock body for connecting battery pack, the first lock body is connected with the second lock body by lock core assembly cooperation;The first lock body is provided with locking position and unlocking position, the lock core assembly can be switched between locking position and unlocking position;The bottom of the second lock body is provided with the unlocking mouth that is communicated with outside;The lock core assembly is connected with first check stop ring, the position close to unlocking mouth in the second lock body is provided with second check stop ring, the first check stop ring and second check stop ring are mutually cooperated by respective cooperation part to make lock core assembly lock stop;Second check stop ring is provided with repelling interval in cooperation position, and the repelling interval is communicated with unlocking mouth.The utility model can promptly discharge sand, dust and other foreign matters into the cooperation position of lock body check structure.

Description

Technical Field

[0001] This utility model relates to the field of vehicle battery swapping technology, specifically to a battery pack swapping locking device for vehicles. Background Technology

[0002] Battery swapping technology for new energy vehicles is a technical solution that replaces traditional charging by quickly replacing the battery pack to replenish the vehicle's electrical energy. The battery swapping locking structure is the core safety component of this technology. Its function is to securely fix the battery pack to the bottom of the vehicle body during driving, parking, and battery swapping, while ensuring quick and accurate unlocking / locking during swapping, thus balancing the two core requirements of "safety" and "battery swapping efficiency."

[0003] For example, Chinese patent document CN118876688A discloses a vehicle battery pack locking device and an electric vehicle. The locking device includes a fixing member and a locking mechanism. One of the fixing member and the locking mechanism is located on the body of the battery swapping vehicle, and the other is located on the battery pack. The locking mechanism includes a lock body and a lock cylinder assembly. The lock cylinder assembly includes a transmission member and a lock tongue. The transmission member and the lock body can move relative to each other to drive the lock tongue to rotate, thereby switching between the locked position and the unlocked position.

[0004] The lock body includes a moving drive component, which in turn has an anti-rotation part. The anti-rotation part engages with the second engaging tooth of the self-locking component via a first engaging tooth, thus locking the moving drive component. After the battery pack is installed in the vehicle, dust and fine sand may enter between the engaging teeth of the anti-rotation part and the self-locking component (i.e., the check valve structure) due to the vehicle's operating environment. If these impurities cannot be discharged in time, they accumulate, preventing the check valve structure from engaging and rendering the check valve function ineffective. Utility Model Content

[0005] The purpose of this invention is to provide a battery pack swapping locking device for vehicles, solving the problem in existing vehicle battery pack locking devices where dust, fine sand, and other impurities cannot be discharged in time, leading to foreign object accumulation and preventing the locking mechanism from engaging, thus causing the locking function to fail.

[0006] To achieve the above objectives, this utility model provides a vehicle battery pack swapping locking device, including a first lock body for connecting to the vehicle and a second lock body for connecting to the battery pack, wherein the first lock body and the second lock body are connected by a lock core assembly.

[0007] The first lock body is provided with a locked position and an unlocked position, and the lock cylinder assembly can switch between the locked position and the unlocked position;

[0008] The bottom of the second lock body is provided with an unlocking port that communicates with the outside; the lock cylinder assembly is connected to a first anti-return ring, and a second anti-return ring is provided in the second lock body near the unlocking port. The first anti-return ring and the second anti-return ring cooperate with each other through their respective mating parts to lock the lock cylinder assembly; the second anti-return ring is provided with a rejection interval at the mating position, and the rejection interval communicates with the unlocking port.

[0009] Furthermore, the first check ring is provided with a first meshing tooth, and the second check ring is provided with a second meshing tooth that matches the first meshing tooth; the rejection interval is located between two adjacent second meshing teeth, and the bottom of the rejection interval is a downward sloping surface.

[0010] Furthermore, the second meshing tooth includes a first tooth surface and a second tooth surface disposed opposite to each other, wherein the height of the first tooth surface is higher than that of the second tooth surface; the tooth tip surface connecting the first tooth surface and the second tooth surface is inclined.

[0011] Alternatively, the first tooth surface and the second tooth surface are of equal length and are inclined relative to each other along the axial direction, and the tooth tip surface connects the first tooth surface and the second tooth surface.

[0012] Furthermore, the first lock body is provided with a through groove, the second lock body is provided with a working through hole along the axial direction, and the unlocking port is located at the bottom of the working through hole;

[0013] The lock cylinder assembly includes a lock tongue, one end of which passes through a through groove and is fixedly provided with a pressure block, and the other end is provided in a working through hole and is threadedly connected with an unlocking nut; the pressure block cooperates with the through groove to unlock or lock, and the unlocking nut is movably provided in the working through hole.

[0014] Furthermore, the top of the unlocking nut is provided with an extension portion, the first check ring is slidably sleeved on the outside of the unlocking nut, and a reset elastic element is connected between the extension portion and the first check ring.

[0015] Furthermore, the latch is fixedly provided with a baffle, which is located inside the working through hole; a first friction plate and a second friction plate are respectively sleeved on the outer side of the latch between the baffle and the outer extension, and a supporting elastic element is compressed and connected between the first friction plate and the second friction plate, so that the first friction plate is in close contact with the baffle and the second friction plate is in close contact with the outer extension.

[0016] Furthermore, the working through hole includes a first through hole and a second through hole, and the outer periphery of the baffle is provided with an outwardly protruding limiting block. The inner wall of the first through hole is provided with a limiting groove, and the limiting block is slidably disposed in the limiting groove to limit the rotation angle of the locking tongue.

[0017] Furthermore, the diameter of the first through hole is smaller than the diameter of the second through hole, and the outer extension of the unlocking nut abuts against the end face of the first through hole.

[0018] Furthermore, a check ring cover is fixedly provided on the top of the second lock body, and the check ring cover restricts the axial movement of the lock tongue.

[0019] Furthermore, the outer surface of the check ring cover is covered with a sealing cover, and the locking tongue passes through the sealing cover.

[0020] Compared with existing known technologies, the technical solution provided by this utility model has the following beneficial effects:

[0021] This utility model discloses a battery pack swapping locking device for vehicles. When the lock cylinder assembly is in the locked position of the first lock body, the first lock body and the second lock body are locked together; when the lock cylinder assembly is in the unlocked position, the first lock body and the second lock body are disengaged. These three components work together to enable quick installation and removal of the battery pack from the vehicle. A first check ring and a second check ring cooperate to lock the lock cylinder assembly, ensuring stable battery pack installation during vehicle operation. An anti-return gap is provided at the mating position of the second check ring, and this anti-return gap is connected to the unlocking port. Vibration during vehicle operation causes sand, dust, and other foreign objects that enter the mating position of the first and second check rings to be shaken off through the anti-return gap and discharged to the outside of the lock body through the unlocking port.

[0022] It is obvious that the elements or features described in the above individual embodiments can be used alone or in combination in other embodiments. Attached Figure Description

[0023] The dimensions and scales in the accompanying drawings do not represent the actual dimensions and scales of the product. The drawings are for illustrative purposes only, and some non-essential elements or features have been omitted for clarity.

[0024] Figure 1 This is a schematic diagram of the locking device in an embodiment of the present invention;

[0025] Figure 2 This is a top view of the locking device in an embodiment of the present invention.

[0026] Figure 3 yes Figure 2 Schematic diagram of the cross-sectional structure at point AA;

[0027] Figure 4 This is a schematic diagram of the lock cylinder assembly in an embodiment of this utility model;

[0028] Figure 5 This is a schematic diagram of the structure of the second locking body in an embodiment of this utility model;

[0029] Figure 6 This is a top view of the second locking body in an embodiment of the present invention;

[0030] Figure 7 yes Figure 6 Schematic diagram of the cross-sectional structure at point BB;

[0031] Figure 8 This is a schematic diagram of the structure of the first lock body in an embodiment of this utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the first locking body in an embodiment of this utility model;

[0033] Figure 10 This is a schematic diagram of the structure of the check ring cover in an embodiment of this utility model;

[0034] Figure 11 This is a schematic diagram of the assembly structure of the check ring cover and the second lock body in an embodiment of this utility model;

[0035] Figure 12 This is an embodiment of the present utility model. Figure 11 A top-view structural diagram;

[0036] Figure 13 yes Figure 12 A schematic diagram of the cross-sectional structure at the CC section;

[0037] Figure 14 This is a schematic diagram of the unlocking tool in an embodiment of this utility model.

[0038] Explanation of reference numerals in the attached figures

[0039] 100. First lock body; 110. Through groove; 120. Limiting protrusion;

[0040] 200. Second lock body; 210. First sub-lock body; 211. Limiting groove; 212. Second anti-loosening groove; 213. Threaded hole;

[0041] 220. Second locking body; 221. Unlocking port; 222. Second check ring; 223. Rejection gap; 224. Second meshing tooth; 225. First tooth surface; 226. Second tooth surface; 227. Tooth tip surface;

[0042] 230. Working through hole; 231. First through hole; 232. Second through hole; 240. Check ring cover; 241. First anti-loosening groove; 242. Anti-loosening wedge; 243. Anti-loosening screw; 250. Sealing cover;

[0043] 300, Lock cylinder assembly; 310, Lock tongue; 320, Unlock nut; 321, Extension portion; 322, First check ring; 323, Reset elastic element; 330, Pressure block; 340, Baffle; 341, Limiting block; 350, First friction plate; 360, Support elastic element; 370, Second friction plate;

[0044] 400. Unlocking tool; 410. Sleeve; 420. Push rod. Detailed Implementation

[0045] The present invention will now be described in detail with reference to the accompanying drawings. The embodiments described herein are merely preferred embodiments of the present invention. Those skilled in the art can conceive of other ways to implement the present invention based on the preferred embodiments, and such other ways also fall within the scope of the present invention.

[0046] Reference Figures 1-13 This embodiment provides a battery pack swapping locking device for vehicles, including a first lock body 100 for connecting to a vehicle and a second lock body 200 for connecting to a battery pack. The first lock body 100 and the second lock body 200 are connected by a lock cylinder assembly 300. The first lock body 100 is located above the second lock body 200. The first lock body 100 has a locked position and an unlocked position, and the lock cylinder assembly 300 can switch between the locked and unlocked positions. When the lock cylinder assembly 300 is in the locked position of the first lock body 100, the first lock body 100 and the second lock body 200 are locked. When the lock cylinder assembly 300 is in the unlocked position, the first lock body 100 and the second lock body 200 are unlocked. The three components work together to enable quick installation and removal of the battery pack from the vehicle.

[0047] The second lock body 200 has an unlocking port 221 at its bottom, communicating with the outside. The lock cylinder assembly 300 is connected to a first check ring 322. A second check ring 222 is fixedly installed inside the second lock body 200 near the unlocking port 221. The first and second check rings 322 engage with each other through their respective mating parts to lock the lock cylinder assembly 300, ensuring stable battery pack installation during vehicle operation. The second check ring 222 has a rejection gap 223 at its mating position, which communicates with the unlocking port 221. The first and second check rings 322 form a check-back structure. Vibration during vehicle operation causes sand, dust, and other foreign objects entering the mating position of the first and second check rings 322 to be shaken off through the rejection gap 223 and discharged from the unlocking port 221 to the outside of the lock body, preventing the accumulation of foreign objects that could prevent the mating positions of the check-back structure from engaging and thus disabling the check-back function.

[0048] As one implementation method of the mating part, such as Figures 4-7As shown, the first check ring 322 is provided with first meshing teeth, and multiple first meshing teeth are arranged around the lower end face of the first check ring 322. The second check ring 222 is provided with second meshing teeth 224 that match the first meshing teeth, and multiple second meshing teeth 224 are arranged around the upper end face of the second check ring 222. The discharge interval 223 is located between two adjacent second meshing teeth 224, and the bottom of the discharge interval 223 is a downward sloping surface. The downward sloping surface helps foreign objects such as sand and dust to fall down the slope under vibration, improving the discharge efficiency.

[0049] The structure of the meshing teeth is optimized for anti-reverse and locking effects. As a preferred embodiment of the meshing tooth structure, such as... Figure 7 As shown, the second meshing tooth 224 includes a first tooth surface 225 and a second tooth surface 226 disposed opposite to each other, with the first tooth surface 225 being higher than the second tooth surface 226; the tooth tip surface 227 connecting the first tooth surface 225 and the second tooth surface 226 is inclined. The relatively higher height of the first tooth surface 225 increases the contact area and improves anti-reverse stability when the first and second meshing teeth 224 are engaged. The inclined tooth tip surface 227 facilitates the positioning of the first and second meshing teeth 224 and increases the smoothness of engagement and disengagement between them.

[0050] In another embodiment of the meshing teeth, the first tooth surface 225 and the second tooth surface 226 of the second meshing tooth 224 are of equal length and inclined relative to each other along the axial direction, and the tooth tip 227 connects the first tooth surface 225 and the second tooth surface 226. It is understood that, correspondingly, the shapes of the first meshing tooth and the second meshing tooth 224 are matched. The meshing tooth structure in this embodiment is more common and easier to manufacture.

[0051] It should be noted that the locked and unlocked positions of the first lock body 100 have actual structures. In one embodiment, such as... Figure 1 , Figure 2 and Figure 8 As shown, the first lock body 100 is provided with a through groove 110, which is an oblong groove or a long strip groove. The upper surface of the first lock body 100 is provided with two limiting protrusions 120, which are located on both sides of the through groove 110.

[0052] The second lock body 200 has a working through hole 230 along the axial direction, and the unlocking port 221 is located at the bottom of the working through hole 230. The lock cylinder assembly 300 includes a lock tongue 310, one end of which passes through the through groove 110 and is fixedly mounted with a pressure block 330, and the other end is located in the working through hole 230 and threadedly connected with an unlocking nut 320; the pressure block 330 cooperates with the through groove 110 to unlock or lock, and the unlocking nut 320 is movably mounted in the working through hole 230. The unlocking nut 320 acts as a driven member, driving the lock tongue 310 to rotate, thereby driving the pressure block 330 to switch positions.

[0053] The latch 310 has a columnar structure, and the pressure block 330 is perpendicular to the latch 310. The pressure block 330 is an oblong or elongated structure that matches the shape of the through groove 110. When the pressure block 330 rotates with the latch 310 to a position parallel to the through groove 110, the pressure block 330 can pass through the through groove 110, and the position of the pressure block 330 at this time is the unlocked position. When the pressure block 330 passes through the through groove 110 and is above the through groove 110, and the pressure block 330 rotates to a direction perpendicular to the through groove 110, the pressure block 330 presses against the through groove 110 and is limited by the limiting protrusion 120, and the position at this time is the locked position.

[0054] The rotation of the locking tongue 310 is driven by the unlocking nut 320, which in turn drives the locking tongue 310 to rotate through a combination of transmission components.

[0055] As one implementation method for the combination of transmission components, such as Figure 3 and Figure 4 As shown, a baffle 340 is fixedly installed on the latch 310, and the baffle 340 is located inside the working through hole 230. A first friction plate 350 and a second friction plate 370 are respectively fitted onto the outer surface of the latch 310 between the baffle 340 and the outer extension 321. A supporting elastic element 360 is compressed and connected between the first friction plate 350 and the second friction plate 370, ensuring that the first friction plate 350 is in close contact with the baffle 340 and the second friction plate 370 is in close contact with the outer extension 321. The supporting elastic element 360 is a compression spring. Due to the elastic force of the compression spring, the first friction plate 350 is in close contact with the baffle 340 on the latch 310, and the second friction plate 370 is in close contact with the unlocking nut 320, thereby increasing the frictional force between the latch 310 and the unlocking nut 320. The unlocking nut 320 then drives the latch 310 to rotate synchronously.

[0056] It should be noted that the rotation angle of the locking tongue 310 needs to be limited, which can be achieved through a simple and reliable mechanical limiting structure. As a preferred embodiment of the limiting structure, such as... Figure 3 and Figure 9As shown, the working through hole 230 includes a first through hole 231 and a second through hole 232. The first through hole 231 is located above the second through hole 232. A limiting block 341 protruding outward is provided on the outer periphery of the baffle 340. A limiting groove 211 is formed on the inner wall of the first through hole 231. The limiting block 341 is slidably disposed in the limiting groove 211 to limit the rotation angle of the locking tongue 310. In this embodiment, the limiting groove 211 has a fan-shaped structure, and the rotation angle of the locking tongue 310 is 90°.

[0057] Furthermore, to limit the axial movement of the unlocking nut 320 and allow it to rotate freely within a certain range, in some embodiments, the diameter of the first through hole 231 is smaller than the diameter of the second through hole 232, and the extension 321 of the unlocking nut 320 abuts against the end face of the first through hole 231. The end face of the first through hole 231 can limit the axial movement of the unlocking nut 320 without restricting its rotation.

[0058] In some embodiments, the second lock body 200 adopts an integral structure, which is convenient to process.

[0059] In some other embodiments, the second lock body 200 is a split structure, including a first lock body 210 and a second lock body 220, with a first through hole 231 and a second through hole 232 respectively disposed in the first lock body 210 and the second lock body 220. The first lock body 210 and the second lock body 220 are fixed together by a threaded connection. The split structure of the second lock body 200 is more convenient to assemble than the integral structure.

[0060] It should be noted that the pressure block 330 presses against the top surface of the first lock body 100 when the first lock body 100 and the second lock body 200 are locked. After locking, the unlocking nut 320 continues to rotate under the drive of the drive component. In order for the pressure block 330 to continue to press while the unlocking nut 320 is rotating, the latch 310 is axially (Z-direction) limited.

[0061] In order to limit the Z-axis movement of the bolt 310, in some embodiments, a check ring cover 240 is fixedly provided on the top of the second lock body 200. The check ring cover 240 restricts the axial (Z-axis) movement of the bolt 310. When the bolt 310 moves upward, the inner side of the top of the check ring cover 240 blocks the baffle 340 on the outer side of the bolt 310, thereby limiting the axial movement of the bolt 310.

[0062] For ease of assembly, the check ring cover 240 is threaded to the top of the second lock body 200; however, other detachable connection methods can also be used. To prevent the check ring cover 240 from loosening due to vibration during vehicle operation, an anti-loosening structure is provided between the check ring cover 240 and the first sub-lock body 210 of the second lock body 200.

[0063] As one implementation method of the anti-loosening structure, such as Figures 9-13 As shown, the check ring cover 240 has two first anti-loosening grooves 241. A second anti-loosening groove 212 is provided on the top of the first locking body 210 corresponding to the position of the first anti-loosening grooves 241. A threaded hole 213 is provided at the center of the bottom of the second anti-loosening groove 212. The first anti-loosening grooves 241 and the second anti-loosening grooves 212 are connected by an anti-loosening wedge 242. An anti-loosening screw 243 passes through the anti-loosening wedge 242 and is threaded into the threaded hole 213. The anti-loosening screw 243 secures the anti-loosening wedge 242.

[0064] In addition, the anti-loosening structure can also adopt a reverse thread design, or apply thread-locking adhesive to the threaded connection of the check ring cover 240 and the second lock body 200 to prevent the threaded connection from loosening due to vibration.

[0065] Furthermore, the outer surface of the check ring cover 240 is covered with a sealing cover 250, through which the lock tongue 310 passes. The sealing cover 250 covers the top and sides of the check ring cover 240 to form a sealed connection, further reducing the probability of foreign objects such as sand, dust, and gravel particles entering the interior of the lock body, and preventing the mating positions of the check structure from failing to engage, thus causing the check function to fail.

[0066] The battery swapping locking device of this application achieves locking or unlocking operations through an external locking / unlocking tool 400. The locking / unlocking tool 400 is designed specifically for the battery swapping locking device, such as... Figure 14 As shown, it includes a sleeve 410, the middle of which has a polygonal through hole that matches the polygonal sidewall of the unlocking nut 320, and the end of the sleeve 410 is provided with a push rod 420 that can lift the first check ring 322 to separate the first check ring 322 from the second check ring 222.

[0067] Understandably, after locking is completed, the locking and unlocking tool 400 is removed from the lock body. In order to prevent the unlocking nut 320 from rotating after locking, the first check ring 322 needs to be reset and engaged with the second check ring 222.

[0068] As one implementation of the reset structure, such as Figure 4 As shown, the top of the unlocking nut 320 has an extension 321. The first check ring 322 is slidably sleeved on the outside of the unlocking nut 320. A reset elastic element 323, which is a reset spring structure, connects the extension 321 and the first check ring 322. The first check ring 322 has a polygonal inner hole that fits the outer side of the unlocking nut 320, allowing it to slide but not rotate on the unlocking nut 320. Under the action of the reset elastic element 323, the first check ring 322 engages with the second check ring 222, locking the first check ring 322 and the second check ring 222, at which point the unlocking nut 320 is also locked.

[0069] The battery swapping locking device of this application includes a locking process and an unlocking process during operation:

[0070] When locking, firstly, bring the second lock body 200, on which the battery is fixedly installed, close to the first lock body 100 fixedly installed on the electric vehicle, so that the pressure block 330 at the top of the latch 310 inserted into the second lock body 200 passes parallel to the through groove 110 of the first lock body 100 and protrudes to the other side of the first lock body 100. At this time, the latch 310 and the first lock body 100 are at a first angle. Then, insert the sleeve 410 of the unlocking tool 400 into the unlocking nut 320 and apply axial pressure to the unlocking tool 400, pushing the first nut upward through the push rod 420. The check ring 322 compresses the reset elastic element 323 (i.e., the reset spring), causing the first engagement tooth on the first check ring 322 to disengage from the second engagement tooth 224 on the second check ring 222. At this time, the unlocking nut 320 can rotate freely within the second through hole 232 of the second lock body 200. Then, the unlocking tool 400 drives the unlocking nut 320 to rotate clockwise. At this time, due to the elastic force of the supporting elastic element 360 (i.e., the compression spring), the first friction plate 350 is in close contact with the baffle 340 on the latch 310, and the second friction plate 370 is in close contact with the release nut. The lock nut 320 is in close contact, thereby increasing the friction between the lock tongue 310 and the unlocking nut 320. The unlocking nut 320 drives the lock tongue 310 to rotate synchronously. When the lock tongue 310 rotates from the first angle to the second angle, the two ends of the pressure block 330 passing through the through groove 110 abut against the limiting protrusion 120 and remain perpendicular to the through groove 110, making it impossible to pass through the through groove 110. At this time, the lock tongue 310 cannot continue to rotate. Continuing to use the unlocking tool 400 to drive the unlocking nut 320 to rotate clockwise, the unlocking nut 320, under the action of the thread, will drive the second lock body. The second lock body 200 moves axially along the latch 310 toward the first lock body 100, causing the pressure block 330 to press vertically against the surfaces of the first lock body 100 on both sides of the through slot 110, forming a mechanical interlock, thereby installing the battery on the second lock body 200 onto the electric vehicle. After tightening the unlocking nut 320, the unlocking tool 400 is removed. Under the return force of the return spring, the first meshing tooth on the first check ring 322 and the second meshing tooth 224 on the second check ring 222 resume engagement, locking the unlocking nut 320 and the second lock body 200 at an angle, preventing rotation. Furthermore, due to the limiting relationship between the limiting block 341 on the baffle 340 in the middle of the latch 310 and the fan-shaped limiting groove 211 in the first through hole 231 on the second lock body 200, the second lock body 200 and the latch 310 at an angle are locked, preventing rotation, thus keeping the latch 310 at a fixed angle and completing the locking.

[0071] During unlocking, firstly, the sleeve 410 of the unlocking tool 400 is fitted onto the unlocking nut 320, and axial pressure is applied to the unlocking tool 400. This pushes the first check ring 322 upwards via the push rod 420, compressing the return spring and disengaging the first engagement tooth on the first check ring 322 from the second engagement tooth 224 on the second check ring 222, thus releasing the anti-reverse lock. At this point, the unlocking nut 320 can rotate freely within the second through hole 232 of the second lock body 200. Then, the unlocking tool 400 is used to drive the unlocking nut 320 to rotate counterclockwise. At this time, because the pressure block 330 at the end of the latch 310 is perpendicularly pressed against the surface of the first lock body 100 on both sides of the through groove 110, the static friction force generated is much greater than the friction force between the latch 310 and the unlocking nut 320. The latch 310 still cannot rotate with the unlocking nut 320. Under the action of the thread, the unlocking nut 320 will drive the second lock body 200 to move in the opposite direction along the axial direction of the latch 310. The pressure of the pressure block 330 pressing against the surface of the first lock body 100 on both sides of the through groove 110 gradually decreases, and the static friction force generated also gradually decreases. The unlocking nut 320 will drive the latch 310 to rotate counterclockwise from the second angle to the first angle. The pressure block 330 is parallel to the through groove 110 of the first lock body 100. At this time, the pressure block 330 can be pulled out from the through groove 110 of the first lock body 100, and the battery on the second lock body 200 can be removed from the electric vehicle.

[0072] In the description of this utility model, it should be noted that the terms "front," "rear," "left," "right," "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0073] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0074] The scope of protection of this utility model is defined only by the claims. Thanks to the teachings of this utility model, those skilled in the art will readily recognize that alternative structures to the disclosed structure can be used as feasible alternative implementations, and that the disclosed implementations can be combined to produce new implementations, which also fall within the scope of the appended claims.

Claims

1. A battery pack swapping locking device for vehicles, comprising a first lock body (100) for connecting to a vehicle and a second lock body (200) for connecting to a battery pack, wherein the first lock body (100) and the second lock body (200) are connected by a lock core assembly (300); The first lock body (100) is provided with a locked position and an unlocked position, and the lock cylinder assembly (300) can switch between the locked position and the unlocked position; Its features are, The bottom of the second lock body (200) is provided with an unlocking port (221) that communicates with the outside; the lock cylinder assembly (300) is connected to a first check ring (322), and a second check ring (222) is provided in the second lock body (200) near the unlocking port (221). The first check ring (322) and the second check ring (222) cooperate with each other through their respective mating parts to lock the lock cylinder assembly (300); the second check ring (222) is provided with a rejection gap (223) at the mating position, and the rejection gap (223) communicates with the unlocking port (221).

2. The battery pack swapping lock device for vehicle according to claim 1, wherein, The first check ring (322) is provided with a first meshing tooth, and the second check ring (222) is provided with a second meshing tooth (224) that matches the first meshing tooth; the rejection interval (223) is located between two adjacent second meshing teeth (224), and the bottom of the rejection interval (223) is a downward sloping surface.

3. The battery pack swapping lock device for vehicle according to claim 2, wherein The second meshing tooth (224) includes a first tooth surface (225) and a second tooth surface (226) disposed opposite to each other, wherein the height of the first tooth surface (225) is higher than that of the second tooth surface (226); the tooth tip surface (227) connecting the first tooth surface (225) and the second tooth surface (226) is inclined. Alternatively, the first tooth surface (225) and the second tooth surface (226) are of equal length and are inclined relative to each other along the axial direction, and the tooth tip surface (227) connects the first tooth surface (225) and the second tooth surface (226).

4. The battery pack swap lockout device for a vehicle of claim 1, wherein, The first lock body (100) is provided with a through groove (110), and the second lock body (200) is provided with a working through hole (230) along the axial direction. The unlocking port (221) is located at the bottom of the working through hole (230). The lock cylinder assembly (300) includes a lock tongue (310), one end of which passes through a through groove (110) and is fixedly provided with a pressure block (330), and the other end is provided in a working through hole (230) and is threadedly connected with an unlocking nut (320); the pressure block (330) cooperates with the through groove (110) to unlock or lock, and the unlocking nut (320) is movably provided in the working through hole (230).

5. The battery pack swap lock device for vehicle according to claim 4, characterized in that, The top end of the unlocking nut (320) is provided with an extension (321), and the first check ring (322) is slidably sleeved on the outside of the unlocking nut (320). A reset elastic element (323) is connected between the extension (321) and the first check ring (322).

6. The battery pack swap lock device for vehicle according to claim 5, characterized in that, The latch (310) is fixedly provided with a baffle (340), which is located inside the working through hole (230). The outer side of the latch (310) is fitted with a first friction plate (350) and a second friction plate (370) between the baffle (340) and the extension (321). A supporting elastic element (360) is compressed and connected between the first friction plate (350) and the second friction plate (370) so that the first friction plate (350) is in close contact with the baffle (340) and the second friction plate (370) is in close contact with the extension (321).

7. The battery pack swap lock device for vehicle according to claim 6, characterized in that, The working through hole (230) includes a first through hole (231) and a second through hole (232). The outer periphery of the baffle (340) is provided with an outwardly protruding limiting block (341). The inner wall of the first through hole (231) is provided with a limiting groove (211). The limiting block (341) is slidably disposed in the limiting groove (211) to limit the rotation angle of the locking tongue (310).

8. The battery pack swapping lock device for vehicle according to claim 7, wherein, The diameter of the first through hole (231) is smaller than the diameter of the second through hole (232), and the extension (321) of the unlocking nut (320) abuts against the end face of the first through hole (231).

9. The battery pack swap lockout device for a vehicle of claim 4, wherein, The top of the second lock body (200) is fixedly provided with a check ring cover (240), which restricts the axial movement of the lock tongue (310).

10. The battery pack swap lockout device for a vehicle of claim 9, wherein, The check ring cover (240) is externally covered with a sealing cover (250), and the locking tongue (310) is disposed through the sealing cover (250).

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