Vehicle battery unlocking device

Abstract

This application discloses a vehicle battery locking / unlocking device, belonging to the field of battery locking / unlocking technology. The vehicle battery locking / unlocking device includes an upper locking body for fixed connection with the vehicle body and a lower locking body for supporting and fixing the vehicle battery. The lower locking body is detachably connected to the upper locking body. The lower locking body includes a lock cylinder fitted under the lower part of the upper locking body, a locking ball movably disposed within the lock cylinder, and a lock sleeve installed outside the lock cylinder and the locking ball and movable relative to the lock cylinder. When the lock sleeve is in the locked position relative to the lock cylinder, a portion of the locking ball is engaged in the upper locking body under the action of the lock sleeve; when the lock sleeve is in the unlocked position relative to the lock cylinder, the action of the lock sleeve on the locking ball is released, and a portion of the locking ball slides out from the upper locking body.

Description

Technical Field

[0001] This invention belongs to the field of battery unlocking technology, and in particular relates to a vehicle battery unlocking device. Background Technology

[0002] Currently, the charging methods for new energy vehicles are generally divided into two types: charging while the vehicle is in motion and battery swapping. Compared to charging while the vehicle is in motion, battery swapping is more likely to meet users' strong demand for rapid charging. It's worth noting that the key to battery swapping lies in the design of the locking mechanism. When not swapping batteries, the locking mechanism keeps the battery firmly connected to the vehicle body; during battery swapping, the locking mechanism allows for rapid separation and connection of the battery from the vehicle body to complete the charging process.

[0003] However, current locking mechanisms primarily use threaded connections to lock the battery. When locking the battery, the threaded components are constantly subjected to significant axial forces. The repeated locking and unlocking processes can easily lead to wear on the threads of the threaded components. Furthermore, during vehicle operation, the forced vibrations of the vehicle body can cause fatigue failure of the threaded components, compromising the reliability of battery fixation and the safe operation of the vehicle. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a vehicle battery locking and unlocking device that can solve the problems of easy wear and tear and low reliability of battery fixing in existing locking mechanisms.

[0005] To achieve the above-mentioned technical objectives, this application provides a vehicle battery locking / unlocking device, including an upper locking body for fixed connection with a vehicle body and a lower locking body for supporting and fixing the vehicle battery. The lower locking body is detachably connected to the upper locking body. The lower locking body includes a lock cylinder fitted on the lower part of the upper locking body, a locking ball movably disposed within the lock cylinder, and a lock sleeve installed outside the lock cylinder and the locking ball and movable relative to the lock cylinder. When the lock sleeve is in the locked position relative to the lock cylinder, a portion of the locking ball is engaged in the upper locking body under the action of the lock sleeve. When the lock sleeve is in the unlocked position relative to the lock cylinder, the action of the lock sleeve on the locking ball is released, and the portion of the locking ball slides out from the upper locking body.

[0006] In one embodiment, the lower lock body further includes a lock shell fixedly connected to the lock cylinder, an elastic element installed inside the lock shell and abutting against the lock sleeve, and an unlocking lever penetrating the lock shell and the elastic element and connected to the lock sleeve. The unlocking lever can drive the lock sleeve to move towards or away from the upper lock body, pushing the portion of the locking ball into the upper lock body, or allowing the locking ball to slide out of the upper lock body.

[0007] In one embodiment, the lower lock body further includes a ball bearing disposed between the lock housing and the lock sleeve, the ball bearing being used to limit the rotation of the lock sleeve relative to the unlocking lever.

[0008] In one embodiment, the lock housing is provided with a limiting groove extending along the axial direction, the lock sleeve is provided with a receiving groove opposite to the opening of the limiting groove, and the ball is located in the limiting groove and the receiving groove.

[0009] In another embodiment, one of the lock housing and the lock sleeve is provided with a guide groove extending axially, and the other of the lock housing and the lock sleeve has a limiting rib adapted to the guide groove.

[0010] In one embodiment, the unlocking rod has an external thread, and the lock sleeve has an internal thread. The unlocking rod and the lock sleeve are connected by the engagement of the external thread and the internal thread. By rotating the unlocking rod, the lock sleeve can be moved closer to or away from the upper lock body.

[0011] In one embodiment, the lower lock body further includes a first fixing member, and the lock cylinder and the lock shell are provided with connecting holes corresponding to the first fixing member. The lock shell and the lock cylinder are fixedly connected by the cooperation of the first fixing member and the connecting holes.

[0012] In one embodiment, the lower lock body further includes a second fixing member, and the lock cylinder includes a connecting part, a locking part, and a supporting part disposed between the connecting part and the locking part. The lock cylinder provides support for the battery through the supporting part, and clamps the battery between the second fixing member and the supporting part through the cooperation of the connecting part and the second fixing member.

[0013] In one embodiment, the lock cylinder has a receiving hole, the diameter of which is greater than or equal to the diameter of the locking ball and the depth of which is less than the diameter of the locking ball.

[0014] In one embodiment, the outer surface of the upper locking body is provided with a groove adapted to the locking ball, the depth of the groove being less than the diameter of the locking ball.

[0015] By adopting the above technical solution, this application has the following beneficial effects:

[0016] This application, through the detachable connection between the upper locking body for fixed connection with the vehicle body and the lower locking body for supporting and fixing the vehicle battery, not only enables the separation and connection of the battery and the vehicle body, but also, by setting a lock sleeve that can move relative to the lock cylinder outside the lock cylinder and locking ball of the lower locking body, allows the locking ball to contact or disengage from the upper locking body, and uses rolling friction instead of sliding friction, it also helps to solve the problems of low reliability and short service life of existing locking mechanisms for fixing batteries. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 A front view of a vehicle battery unlocking / unlocking device and battery assembly provided as an embodiment of the present invention;

[0019] Figure 2 for Figure 1 The diagram shows the three-dimensional structure of the vehicle battery unlocking / unlocking device and the battery assembly.

[0020] Figure 3 This is an exploded structural diagram of Embodiment 1 of the present invention;

[0021] Figure 4 This is a schematic diagram of the lock cylinder structure in Embodiment 1 of the present invention;

[0022] Figure 5 This is a schematic diagram of the lock shell, lock sleeve, and ball bearings in Embodiment 1 of the present invention;

[0023] Figure 6 for Figure 1 The diagram shows the state structure of the vehicle battery locking / unlocking device in the AA direction when the battery is locked.

[0024] Figure 7 for Figure 1 The diagram shows the state structure of the vehicle battery unlocking / unlocking device in the AA direction when unlocking the battery.

[0025] Figure 8 for Figure 1 The diagram shows the state structure of the lower locking body in the AA direction when the battery is stored after it has been separated from the upper locking body in the vehicle battery locking / unlocking device.

[0026] Figure 9 This is a schematic diagram of the lock shell and lock sleeve in Embodiment 2 of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Upper lock body; 2. Lower lock body; 3. Battery;

[0029] 11. Grooving;

[0030] 21. Lock cylinder; 22. Locking ball; 23, 23a. Lock sleeve; 24, 24a. Lock case; 25. Elastic element; 26. Unlocking lever; 27. Ball bearing; 28. First fixing member; 29. ​​Second fixing member;

[0031] 211. Connecting part; 212. Locking part; 213. Supporting part; 214. Receiving hole;

[0032] 231. Receiving groove; 232. Limiting rib; 233. Partition; 234. Receiving cavity;

[0033] 241. Limiting groove; 242. Guide groove. Detailed Implementation

[0034] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. Based on the description of the present invention, all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present invention.

[0035] In the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," etc., 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. Those skilled in the art can understand the specific meaning of the above terms according to the specific circumstances.

[0036] The terms “upper,” “lower,” “left,” “right,” “front,” “back,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of description and simplification, 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. Therefore, they should not be construed as limitations on the present invention.

[0037] The terms “first,” “second,” “third,” etc., are used merely to distinguish elements with similar attributes, not to indicate or imply relative importance or a specific order.

[0038] The terms “include,” “comprising,” or any other variation thereof are intended to cover non-exclusive inclusion, which includes not only the elements listed but also other elements not expressly listed.

[0039] With the increasing stock of new energy vehicles and policy support, the dual approach of charging and battery swapping is gradually gaining market acceptance. Users' demand for rapid charging is growing stronger, and the demand for battery swapping is also increasing dramatically. To meet the need for rapid battery swapping, a safe and reliable battery locking mechanism is essential.

[0040] According to the inventor's understanding, current locking mechanisms either lock the battery through a threaded connection or indirectly fix it by having a threaded component press against an intermediate mechanism. However, all of these solutions share a common problem: when locking the battery, the threaded component is constantly subjected to a large axial force. Repeated locking and unlocking not only easily leads to wear on the threads of the threaded component, but also, during vehicle operation, the forced vibration of the vehicle body can easily cause fatigue failure of the threaded component, thus failing to guarantee the reliability of battery fixation and the safe operation of the vehicle.

[0041] To address the issues of easy wear and tear and low reliability in securing the battery in existing locking mechanisms, it is necessary to improve or optimize the structure of the battery locking mechanism.

[0042] Example 1

[0043] Please see Figures 1 to 3 The first embodiment of the present invention provides a vehicle battery locking / unlocking device, which includes an upper locking body 1 and a lower locking body 2. The upper locking body 1 is used for fixed connection with the vehicle body, and the lower locking body 2 is used for supporting and fixing the vehicle battery 3. The lower locking body 2 is detachably connected to the upper locking body 1. It should be noted that the vehicle body specifically refers to the sheet metal structure on the vehicle used to mount the battery 3, such as the vehicle chassis. The fixed connection includes, but is not limited to, welding and threaded connection. The battery 3 refers to the power battery that provides power to the vehicle. The detachable connection includes, but is not limited to, plug-in and socket connection, so as to quickly replenish the vehicle's power through convenient assembly and disassembly.

[0044] In this first embodiment, the upper locking body 1 is T-shaped, including a horizontal section and a vertical section. The horizontal section is plate-shaped and used for fixed connection with the vehicle body. The vertical section is column-shaped and extends downward from the bottom of the middle of the horizontal section. A groove 11 is formed on the lower outer surface of the vertical section, which is used for connection between the upper locking body 1 and the lower locking body 2. Specifically, the groove 11 is located on the outer circumferential surface of the lower part of the vertical section of the upper locking body 1, and is an annular groove with its opening extending radially outward along the vertical section.

[0045] The lower lock body 2 includes a lock cylinder 21, a locking ball 22, and a lock sleeve 23. The lock cylinder 21 is fitted onto the lower part of the upper lock body 1. The locking ball 22 is movably installed inside the lock cylinder 21. The lock sleeve 23 is installed outside the lock cylinder 21 and the locking ball 22 and is movable relative to the lock cylinder 21. Preferably, the lock cylinder 21, the lock sleeve 23, and the upper lock body 1 are coaxially arranged so that a detachable connection between the lower lock body 2 and the upper lock body 1 can be achieved by applying a small force.

[0046] like Figure 3 , Figure 4 and Figure 5 As shown, the lock cylinder 21 is cylindrical, with a first through hole in the middle for the vertical section of the upper lock body 1 to pass through. Specifically, the lock cylinder 21 includes a connecting part 211, a locking part 212, and a supporting part 213. The connecting part 211 is located at the upper part of the lock cylinder 21 and is used to extend into the corresponding mounting hole on the battery 3. The locking part 212 is located at the lower part of the lock cylinder 21, and its wall has a receiving hole 214 that penetrates the locking part 212 radially to receive the locking ball 22. The supporting part 213 is located between the connecting part 211 and the locking part 212, and the outer diameter of the supporting part 213 is larger than the outer diameter of the connecting part 211 and also larger than the outer diameter of the locking part 212 to support the battery 3. Preferably, the diameter of the receiving hole 214 is greater than or equal to the diameter of the locking ball 22, and the supporting part 213 is integrally formed with the connecting part 211 and the locking part 212.

[0047] In some embodiments, there may be multiple locking balls 22. In this first embodiment, there are four locking balls 22, which are evenly installed in the receiving holes 214 of the locking part 212.

[0048] The lock sleeve 23 is also cylindrical, with a second through hole in the middle for accommodating the locking part 212 of the lock cylinder 21 and the locking ball 22 inside the lock cylinder 21. The inner diameter of the second through hole is larger than the inner diameter of the first through hole.

[0049] It should be noted that, in order to achieve a detachable connection between the lower lock body 2 and the upper lock body 1, the depth of the groove 11 on the upper lock body 1 is less than the diameter of the locking ball 22. The receiving hole 214 on the lower lock body 2 communicates with the first through hole in the middle of the lock cylinder 21. Furthermore, the depth of the receiving hole 214, i.e., the wall thickness of the locking part 212, is less than the diameter of the locking ball 22, allowing the locking ball 22 to roll inward or outward in the receiving hole 214, so that a portion of the locking ball 22 can be engaged in or slide out of the groove 11 on the upper lock body 1. Preferably, the diameter of the locking ball 22 is greater than the sum of the depth of the receiving hole 214 and the depth of the groove 11, and the inner surface of the groove 11 is adapted to the outer surface of the locking ball 22. Thus, when the outer surface of the locking ball 22 is in contact with both the wall of the groove 11 on the upper lock body 1 and the inner wall of the second through hole on the lock sleeve 23, the lock sleeve 23 is in the locked position relative to the lock cylinder 21. Figure 6As shown; when the outer surface of the locking ball 22 disengages from the wall of the groove 11 on the upper lock body 1 or from the inner wall of the second through hole on the lock sleeve 23, the lock sleeve 23 is in the unlocked position relative to the lock cylinder 21, as shown. Figure 7 As shown.

[0050] In this first embodiment, in order to enable the lock sleeve 23 to move relative to the lock cylinder 21 between the locked position and the unlocked position, the lower lock body 2 also includes a lock shell 24, an elastic element 25, and an unlocking / unlocking rod 26. The lock shell 24 is fitted on the outside of the lock sleeve 23 and is fixedly connected to the lock cylinder 21. The elastic element 25 is installed inside the lock shell 24 and abuts against the lock sleeve 23. The unlocking / unlocking rod 26 passes through the lock shell 24 and the elastic element 25 and is connected to the lock sleeve 23. Specifically, the lock housing 24 is cylindrical, open at one end and closed at the other. The closed end of the lock housing 24 has a mating hole for the unlocking lever 26 to pass through, and the cross-section of the mating hole is convex. A partition 233 is formed in the middle of the second through hole of the lock sleeve 23. The partition 233 divides the second through hole of the lock sleeve 23 into two receiving cavities 234 in the vertical direction. One of these two receiving cavities 234 is used to receive the locking part 212 of the lock cylinder 21, and the other is used to receive the elastic element 25. The elastic element 25 refers to a mechanical element that can undergo elastic deformation under the action of external force and can return to its original shape, such as a spring or a tumbler. It is pressed between the lock housing 24 and the lock sleeve 23. The unlocking lever 26 can drive the lock sleeve 23 to move towards or away from the upper lock body 1, pushing a part of the locking ball 22 into the upper lock body 1, or allowing the locking ball 22 to slide out of the upper lock body 1. It should be noted that the connection between the unlocking rod 26 and the lock sleeve 23 mentioned here can be a threaded connection or a fixed connection.

[0051] In this first embodiment, to precisely control the locking and unlocking positions of the lock sleeve 23 relative to the lock cylinder 21, the locking / unlocking lever 26 is connected to the lock sleeve 23 via a threaded connection. Specifically, the locking / unlocking lever 26 has an external thread, and the partition plate 233 of the lock sleeve 23 has an internal thread. The locking / unlocking lever 26 and the lock sleeve 23 are connected through the engagement of the external and internal threads. Rotation of the locking / unlocking lever 26 can move the lock sleeve 23 closer to or further away from the upper lock body 1. Preferably, the external thread on the locking / unlocking lever 26 and the internal thread on the partition plate 233 are rotated counter-clockwise, so that during the rotation of the locking / unlocking lever 26, the direction of movement of the lock sleeve 23 relative to the lock cylinder 21 is consistent with the operator's operating habits; that is, clockwise rotation of the locking / unlocking lever 26 locks the lock, and counter-clockwise rotation unlocks it.

[0052] It should be noted that, in order for the lock sleeve 23 to move relative to the lock cylinder 21 between the locked and unlocked positions, please refer to [link to relevant documentation]. Figure 6 , Figure 7The top end of the unlocking lever 26, which passes through the lock housing 24 and the elastic element 25, abuts against the bottom of the vertical section of the upper lock body 1. Preferably, the bottom of the vertical section of the upper lock body 1 has a groove, such as a conical groove, that matches the upper end of the unlocking lever 26. Thus, when the battery 3 needs to be locked, the operator uses an auxiliary tool to push against and rotate the unlocking lever 26 clockwise. In the vertical direction, due to the abutment of the bottom of the upper lock body 1, the height of the unlocking lever 26 relative to the lock housing 24 remains unchanged, and only clockwise rotation occurs. Under the combined action of the external torque, the elastic potential energy of the elastic element 25, and the damping force of the locking ball 22, the lock sleeve 23 will rise to the locking position, while pushing a part of the locking ball 22 to slide into the rolling groove 11. At this time, the elastic element 25 is in a light load state, and the upper lock body 1 and the lower lock body 2 are in a relatively fixed state, which can realize the locking of the battery 3 installed on the lower lock body 2.

[0053] When it is necessary to unlock the battery 3, the operator uses an auxiliary tool to push against and rotate the unlocking lever 26 counterclockwise. In the vertical direction, due to the push at the bottom of the upper lock body 1, the height position of the unlocking lever 26 relative to the lock shell 24 remains unchanged, and only counterclockwise rotation occurs. Under the combined action of external torque, elastic potential energy of elastic element 25 and damping force of locking ball 22, the lock sleeve 23 will descend to the unlock position, and at the same time, the restriction on the outward rolling of locking ball 22 will be released. At this time, the compression deformation of elastic element 25 reaches its maximum, and part of locking ball 22 will slide outward from the rolling groove 11 of upper lock body 1 and abut against lock sleeve 23. The battery 3 installed on lower lock body 2 can be unlocked by separating lower lock body 2 from upper lock body 1.

[0054] It should be noted that in the initial stage of the separation of the upper locking body 1 and the lower locking body 2, due to the abutment of the locking ball 22 against the locking sleeve 23 and the lower part of the upper locking body 1 against the unlocking lever 26, the locking sleeve 23 and the unlocking lever 26 will be initially restricted from moving upward. As the lower locking body 2 moves downward under the action of gravity and / or external force, the lower part of the upper locking body 1 will push the locking ball 22 to roll further outward, and at the same time separate it from the unlocking lever 26. After the locking ball 22 slides past the bottom end of the upper locking body 1, the lock... Driven by the elastic potential energy of the elastic element 25, the sleeve 23 and the unlocking lever 26 will rise synchronously to the position where the partition 233 of the sleeve 23 abuts against the locking part 212 of the lock cylinder 21. At the same time, the sleeve 23 pushes a part of the locking ball 22, causing the locking ball 22 to roll into the first through hole of the lock cylinder 21 within the receiving hole 214. At this time, the elastic element 25 is in a state of slight load due to the weight of the sleeve 23 and the unlocking lever 26, allowing the removed battery 3 to be placed in the battery swapping station for storage and charging. Figure 8As shown. Preferably, when the upper lock body 1 and the lower lock body 2 are completely separated, the upper tip of the unlocking rod 26 is on the same horizontal plane as the central axis of the receiving hole 214, or in the vertical direction, the upper tip of the unlocking rod 26 is higher than the central axis of the receiving hole 214, which facilitates the reassembly of the lower lock body 2 and the upper lock body 1.

[0055] Furthermore, when the connection between the unlocking / unlocking lever 26 and the locking sleeve 23 is a threaded connection, to prevent the unlocking / unlocking lever 26 and the locking sleeve 23 from rotating coaxially during the process of the operator pressing against and rotating the unlocking / unlocking lever 26, thus causing the unlocking / unlocking action to fail, as follows: Figure 3 , Figure 5 As shown, the lower lock body 2 of the vehicle battery unlocking device also includes a ball bearing 27 disposed between the lock housing 24 and the lock sleeve 23, used to limit the rotation of the lock sleeve 23 relative to the unlocking lever 26. Specifically, the lock housing 24 is provided with a limiting groove 241 extending axially, and the lock sleeve 23 is provided with a receiving groove 231 facing the opening of the limiting groove 241. The ball bearing 27 is located in the limiting groove 241 and the receiving groove 231. Preferably, the diameter of the ball bearing 27 is greater than the sum of the depth of the limiting groove 241 and the depth of the receiving groove 231, so as to limit the rotation of the lock sleeve 23 relative to the unlocking lever 26 in the horizontal direction during the process of pressing against and rotating the unlocking lever 26, and ensure the movement of the lock sleeve 23 relative to the unlocking lever 26 in the vertical direction.

[0056] In some embodiments, there can be multiple balls 27, which can be distributed circumferentially between the locking sleeve 23 and the locking housing 24, or arranged in multiple strings. In this first embodiment, there are three strings of balls 27, which are evenly installed between the locking sleeve 23 and the locking housing 24. It should be noted that each string of balls 27 has four balls, but is not limited to this. Preferably, the diameter of the balls 27 is smaller than the diameter of the locking ball 22.

[0057] In some embodiments, the connection between the unlocking lever 26 and the lock sleeve 23 is a fixed connection, including but not limited to welding. In this case, the top end of the unlocking lever 26 that penetrates the lock housing 24 and the elastic element 25 no longer needs to abut against the bottom of the vertical section of the upper lock body 1. When it is necessary to unlock the battery 3, the operator can use an auxiliary tool to pull the unlocking lever 26 outward, which can also lower the lock sleeve 23 to the unlock position, while simultaneously causing the locking ball 22 to slide outward from the roller groove 11. Then, the lower lock body 2 can be moved downward to separate the lower lock body 2 from the upper lock body 1. When it is necessary to lock the battery 3, since the elastic element 25 has the elastic potential energy to restore its original shape, the operator can release the unlocking lever 26, causing the lock sleeve 23 and the unlocking lever 26 to rise synchronously to the locking position under the drive of the elastic potential energy of the elastic element 25. At the same time, the lock sleeve 23 pushes the locking ball 22 to roll into the roller groove 11, which can also achieve the connection between the lower lock body 2 and the upper lock body 1.

[0058] In this first embodiment, the lower lock body 2 of the vehicle battery locking / unlocking device further includes a first fixing member 28 and a second fixing member 29. The first fixing member 28 is used for the fixed connection between the lock housing 24 and the lock cylinder 21, and the second fixing member 29 is used for the fixed connection between the battery 3 and the lock housing 21. Specifically, the first fixing member 28 can be a screw. Correspondingly, the lock cylinder 21 and the lock housing 24 have connection holes, such as threaded holes, corresponding to the first fixing member 28. By tightening the first fixing member 28 in the connection hole, the operator can fix the lock housing 24 and the lock cylinder 21.

[0059] The second fixing member 29 can be a nut or a pin. Correspondingly, the outer surface of the connecting part 211 is formed with an external thread or pin hole that matches the second fixing member 29. Thus, when the battery 3 is connected to the lower lock body 2, the lock cylinder 21 of the lower lock body 2 provides support for the battery 3 through the support part 213, and the battery 3 is clamped between the second fixing member 29 and the support part 213 through the cooperation of the connecting part 211 that passes through the mounting hole on the battery 3 and the second fixing member 29.

[0060] Compared to existing technologies, when the current lock body 2 is connected to the upper lock body 1, the threaded components such as the unlocking rod 26, the first fixing member 28, and the second fixing member 29 mainly bear the connection function and no longer bear a large axial load. This not only solves the problem that the existing locking mechanism is prone to thread wear and fatigue failure due to repeated unlocking and forced vibration of the vehicle body, but also helps to ensure the reliability of battery fixation and the safe driving of the vehicle.

[0061] Example 2

[0062] Please see Figure 9 The second embodiment of the present invention also provides a vehicle battery locking and unlocking device. Most of the features of the locking and unlocking device are the same as those of the locking and unlocking device of the first embodiment. The difference is that the locking sleeve 23a and locking shell 24a of the locking and unlocking device of the second embodiment are structurally different from the locking sleeve 23 and locking shell 24 of the locking and unlocking device of the first embodiment, and the ball bearing 27 is not provided. The following is a detailed description.

[0063] In Embodiment 2, a limiting rib 232 extending axially is formed on the lock sleeve 23a, and a guide groove 242 extending axially and adapted to the limiting rib 232 is formed on the lock housing 24a. Specifically, the limiting rib 232 protrudes radially outward from the outer surface of the lock sleeve 23a, and the guide groove 242 is recessed radially outward from the inner surface of the lock housing 24a. Thus, when the operator pushes against and rotates the unlocking lever 26, the lock sleeve 23a, which is threadedly connected to the unlocking lever 26, is limited in the horizontal direction by the combined action of the limiting rib 232 and the guide groove 242 of the lock housing 24a, and the movement of the lock sleeve 23a relative to the unlocking lever 26 is ensured in the vertical direction. This also prevents the unlocking lever 26 and the lock sleeve 23a from rotating coaxially, thus preventing the unlocking action from failing.

[0064] In some embodiments, there may be multiple limiting ribs 232 and guide grooves 242. In this second embodiment, there are three limiting ribs 232 and three guide grooves 242.

[0065] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A vehicle battery unlocking device, characterized in that, The system includes an upper locking body (1) for fixed connection with the vehicle body and a lower locking body (2) for supporting and fixing the vehicle battery (3). The lower locking body (2) is detachably connected to the upper locking body (1). The lower locking body (2) includes a lock cylinder (21) fitted under the lower part of the upper locking body (1), a locking ball (22) movably disposed within the lock cylinder (21), and a lock sleeve mounted outside the lock cylinder (21) and the locking ball (22) and movable relative to the lock cylinder (21). (23, 23a), a lock shell (24, 24a) fixedly connected to the lock cylinder (21), an elastic element (25) installed inside the lock shell (24, 24a) and abutting against the lock sleeve (23, 23a), an unlocking lever (26) penetrating the lock shell (24, 24a) and the elastic element (25) and connected to the lock sleeve (23, 23a), and a first fixing member (28), wherein the lock cylinder (21) and the lock shell (24, 24a) are provided with The lock housing (24, 24a) and the lock cylinder (21) are fixedly connected by the connection hole corresponding to the first fixing member (28); when the lock sleeve (23, 23a) is in the locked position relative to the lock cylinder (21), a part of the locking ball (22) is engaged in the upper lock body (1) under the action of the lock sleeve (23, 23a); the lock sleeve (23, 23a) is in the locked position relative to the lock cylinder (21). 1) When in the unlocked position, the locking sleeve (23, 23a) releases its effect on the locking ball (22), and a part of the locking ball (22) slides out of the upper locking body (1); the unlocking lever (26) can drive the locking sleeve (23, 23a) to move closer to or further away from the upper locking body (1), push a part of the locking ball (22) into the upper locking body (1), or allow the locking ball (22) to slide out of the upper locking body (1).

2. The vehicle battery unlocking / unlocking device as described in claim 1, characterized in that, The lower lock body (2) also includes a ball (27) disposed between the lock housing (24, 24a) and the lock sleeve (23, 23a), the ball (27) being used to limit the rotation of the lock sleeve (23, 23a) relative to the unlocking lever (26).

3. The vehicle battery unlocking / unlocking device as described in claim 2, characterized in that, The lock housing (24, 24a) is provided with a limiting groove (241) extending along the axial direction, and the lock sleeve (23, 23a) is provided with a receiving groove (231) opposite to the opening of the limiting groove (241). The ball (27) is located in the limiting groove (241) and the receiving groove (231).

4. The vehicle battery unlocking / unlocking device as described in claim 1, characterized in that, One of the lock housing (24, 24a) and the lock sleeve (23, 23a) is provided with a guide groove (242) extending in the axial direction, and the other of the lock housing (24, 24a) and the lock sleeve (23, 23a) has a limiting rib (232) adapted to the guide groove (242).

5. The vehicle battery unlocking / unlocking device as described in claim 1, characterized in that, The unlocking rod (26) is provided with an external thread, and the locking sleeve (23, 23a) is provided with an internal thread. The unlocking rod (26) and the locking sleeve (23, 23a) are connected by the engagement of the external thread and the internal thread. By rotating the unlocking rod (26), the locking sleeve (23, 23a) can be moved closer to or away from the upper locking body (1).

6. The vehicle battery unlocking / unlocking device as described in claim 1, characterized in that, The lower lock body (2) also includes a second fixing member (29). The lock cylinder (21) includes a connecting part (211), a locking part (212), and a support part (213) disposed between the connecting part (211) and the locking part (212). The lock cylinder (21) provides support for the battery (3) through the support part (213), and clamps the battery (3) between the second fixing member (29) and the support part (213) through the cooperation of the connecting part (211) and the second fixing member (29).

7. The vehicle battery unlocking / unlocking device as described in claim 1, characterized in that, The lock cylinder (21) is provided with a receiving hole (214), the diameter of which is greater than or equal to the diameter of the locking ball (22) and the depth of which is less than the diameter of the locking ball (22).

8. The vehicle battery unlocking / unlocking device as described in claim 1, characterized in that, The outer surface of the upper locking body (1) is provided with a groove (11) that is adapted to the locking ball (22), and the depth of the groove (11) is less than the diameter of the locking ball (22).

Images