Battery pack locking mechanism and battery pack locking device

Abstract

The present application relates to a battery pack locking mechanism and a battery pack locking device, which belongs to the technical field of electric vehicle battery pack installation, and comprises a first locking assembly, comprising a fixed shaft and a rotating lock block rotatably mounted on the fixed shaft, wherein the rotating lock block is cantilevered toward the inside of the cavity and pressed against the side of the battery pack shell away from the bottom of the installation cavity when in a locked state; a second locking assembly, comprising a locking rod slidably mounted in the installation cavity and a cam plate that is linked with the rotating lock block and drives the locking rod to slide into the middle of the battery pack shell to lock the battery pack shell; when the rotating lock block is in a locked state, the locking rod is inserted into the battery pack shell to lock the battery pack, and when the rotating lock block is in an unlocked state, the locking rod slides out of the battery pack shell to be in an unlocked state. The present application has the effect of improving the stability of the battery pack after installation.

Description

Technical Field

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

[0002] A battery pack is formed by connecting multiple lithium battery modules in series and placing them in a shell. Electric vehicles also mainly install a battery pack as a mobile power source to store electricity for daily use.

[0003] Generally, the battery pack of a car is installed under the chassis of the car or in the trunk. When the battery pack of a car is installed in the trunk, there will be an installation cavity at the bottom of the trunk for the battery pack to be installed. When installing, the battery pack needs to be placed in the installation cavity, and then the battery pack is limited and fixed in the installation cavity.

[0004] In the related art, a fixed shaft is set at the cavity opening of the installation cavity, and a locking block is rotatably mounted on the fixed shaft. After the battery pack is placed in the installation cavity, the locking block is rotated so that the locking block cantilevers into the installation cavity and abuts against the side of the battery pack shell away from the bottom of the installation cavity, thereby locking the battery pack within the installation cavity.

[0005] With respect to the above-mentioned related technologies, the inventors believe that when a car encounters a bumpy road during driving, it will shake significantly, and the stability of the battery pack locked only by the locking block is low. Summary of the invention

[0006] In order to improve the stability of the battery pack after installation, the present application provides a battery pack locking mechanism and a battery pack locking device.

[0007] In a first aspect, the present application provides a battery pack locking mechanism, which adopts the following technical solution:

[0008] A battery pack locking mechanism comprises a first locking assembly, comprising a fixed shaft and a rotating locking block rotatably mounted on the fixed shaft, wherein the rotating locking block is cantilevered toward the inside of the cavity and pressed against a side of the battery pack housing away from the bottom of the mounting cavity when in a locked state;

[0009] The second locking assembly includes a locking rod slidably installed in the installation cavity and a cam plate which is linked with the rotating locking block and drives the locking rod to slide into the middle of the battery pack shell to lock the battery pack shell;

[0010] When the rotating lock block is in a locked state, the locking rod is inserted into the battery pack shell to lock the battery pack, and when the rotating lock block is in an unlocked state, the locking rod slides out of the battery pack shell to be in an unlocked state.

[0011] By adopting the above technical solution, after placing the battery pack in the installation cavity, rotate the rotary lock block so that the rotary lock block limits the cavity opening of the installation cavity, thereby limiting the battery pack in the installation cavity. While rotating the rotary lock block, the cam plate will be linked with the rotary lock block and rotate synchronously. After the cam plate rotates, it will drive the locking rod to slide and then insert it into the locking hole opened in the middle of the battery pack shell. The battery pack can be double locked without the need to control the second locking component separately. Compared with only pressing and limiting the battery pack by rotating the rotary lock block, the two locking components of the above structure lock the battery pack, so that the battery pack is more stable after installation and fixation.

[0012] Optionally, the first locking assembly further includes a linkage sleeve, the linkage sleeve is sleeved on the fixed shaft and fixedly connected to the rotating locking block, and the cam plate is sleeved on the connecting sleeve and fixedly connected to the linkage sleeve.

[0013] By adopting the above technical solution, the cam plate and the rotating locking block are fixedly connected to the linkage sleeve. After the rotating locking block rotates, the linkage sleeve will also drive the cam plate to rotate. No other driving parts are needed, the structure is simple and the cost is low.

[0014] Optionally, it also includes a mounting frame for placing the battery pack, wherein the battery pack is partially located within the mounting frame, the locking rod is slidably mounted on the mounting frame and partially cantilevered into the interior of the mounting frame, and the locking rod is provided with an unlocking spring that enables the locking rod to release the lock on the battery pack shell.

[0015] By adopting the above technical solution, the installation frame can make the battery pack more accurately installed at a specific position in the installation cavity, ensuring the accuracy of the locking rod inserted into the locking hole on the battery pack shell. The locking rod is partially suspended inside the installation frame to ensure the locking of the battery pack. When the cam plate rotates and resets, the locking rod automatically disengages from the locking hole of the battery pack shell under the action of the unlocking spring to achieve unlocking.

[0016] Optionally, the second locking assembly further comprises an arcuate rod disposed on a side of the locking rod close to the cam plate and cooperating with the cam plate, and one end of the unlocking spring abuts against the mounting frame, and the other end abuts against the arcuate rod.

[0017] By adopting the above technical solution, the arrangement of the arc rod can cooperate more smoothly with the rotated cam plate. At the same time, the arc rod will also limit one end of the unlocking spring, making it difficult for the unlocking spring to detach from the locking rod.

[0018] Optionally, a rolling wheel having a different diameter that matches the cam plate is detachably and replaceably mounted on the arc rod.

[0019] By adopting the above technical solution, the cam plate hits the rolling wheel after rotation, driving the rolling wheel to move more smoothly, thereby driving the locking rod to move. In addition, rolling wheels of different diameters can be replaced to change the moving distance of the locking rod, thereby making the entire locking mechanism adaptable to battery packs of various specifications.

[0020] Optionally, the rotating lock block is provided with an inclined surface for gradually pressing the battery pack.

[0021] By adopting the above technical solution, under the action of the inclined surface, the rotating lock block gradually presses against the battery pack as it rotates to limit the battery pack and prevent the battery pack from shaking easily, so that the rotating lock block can be rotated more labor-savingly at the beginning.

[0022] In a second aspect, the present application provides a battery pack locking device, which adopts the following technical solution:

[0023] A battery pack locking device comprises a lifting assembly, a lifting drive assembly and the battery pack locking mechanism described above, wherein the lifting assembly is installed at the bottom of the installation cavity to drive the battery pack to lift, and the lifting drive assembly is linked with the rotating lock block to drive the lifting assembly to rise or fall;

[0024] When the rotating lock block is in an unlocked state, the lifting assembly drives the battery pack to rise out of the installation cavity, and when the rotating lock block is in a locked state, the lifting assembly drives the battery pack to descend and be located in the installation cavity.

[0025] By adopting the above technical solution, when the rotating lock block is rotated to unlock the battery pack, the lifting drive assembly will be linked with the rotating lock block, driving the lifting assembly to rise and push part of the battery pack out of the installation cavity, making it easier for people to apply force to the battery pack and take it out of the installation cavity. When the rotating lock block rotates to lock the battery pack, it will be linked with the lifting drive assembly, so that the lifting assembly drives the battery pack down to the installation cavity.

[0026] Optionally, the lifting assembly includes a lifting base cover and a lifting rack column, the lifting base cover is installed at the bottom of the installation cavity, and the lifting rack column is slidably installed in the lifting base cover and cooperates with the lifting drive assembly.

[0027] Optionally, the lifting drive assembly includes an active bevel gear, a driven bevel gear, a driven shaft and a transmission spur gear, the active bevel gear is sleeved and fixed on the linkage sleeve, the driven bevel gear and the transmission spur gear are both installed on the driven shaft and rotate synchronously with the driven shaft, the driven bevel gear is meshed with the active bevel gear, and the transmission spur gear is meshed with the lifting rack column.

[0028] By adopting the above technical solution, when the rotary lock block is rotated, the active bevel gear will rotate under the drive of the linkage sleeve, thereby driving the driven bevel gear to rotate; the transmission spur gear rotates through the driven shaft and drives the lifting rack column to slide up and down. The above structure reduces the number of driving parts, and rotating a rotary lock block can achieve mechanical driving of the lifting assembly to lift.

[0029] Optionally, it also includes a rack belt, and the battery pack locking mechanism, the lifting assembly and the lifting drive assembly are arranged in plurality at intervals around the battery pack, and one battery pack locking mechanism corresponds to a group of the lifting assembly and the lifting drive assembly, and a transmission gear is sleeved and fixed on each of the linkage sleeves, and the plurality of transmission gears are located inside the rack belt and mesh with the rack belt.

[0030] By adopting the above technical solution, the battery pack on general electric vehicles is relatively large, so multiple battery pack locking mechanisms are used to lock various positions of the battery pack, thereby improving the stability of the battery pack after locking. In addition, the cooperation of multiple lifting assemblies and multiple lifting drive assemblies forms multiple forces to push the battery pack out, so that the force on the battery pack is more dispersed when it is pushed out. The cooperation between the rack ring belt and each transmission gear enables multiple locking mechanisms to be linked, and then synchronously move to lock or unlock the battery pack. Compared with electrical control, the rack ring belt ensures the synchronization of the movement of multiple locking mechanisms through pure mechanics.

[0031] In summary, the present application includes at least one of the following beneficial technical effects:

[0032] 1. After the battery pack is placed in the installation cavity, the locking block and the locking rod are rotated to double lock the limit position, so that the battery pack is more stable after installation;

[0033] 2. The rotating lock block and the cam plate are linked by a linkage sleeve. When the rotating lock block rotates, the cam plate will also rotate to drive the locking rod to insert into the battery pack shell to lock the battery pack. The synchronous linkage of the two reduces the operation steps, and locking and unlocking are more convenient;

[0034] 3. When the rotating lock block is turned to unlock the battery pack, the lifting drive assembly will work in conjunction with the rotating lock block, driving the lifting assembly to rise and push part of the battery pack out of the installation cavity, making it easier for people to apply force to the battery pack and take it out of the installation cavity. When the rotating lock block rotates to lock the battery pack, it will work in conjunction with the lifting drive assembly, causing the lifting assembly to drive the battery pack down into the installation cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a usage scenario diagram of the battery pack locking mechanism in an embodiment of the present application.

[0036] Figure 2It is an exploded schematic diagram of the battery pack locking mechanism and the battery pack in the embodiment of the present application.

[0037] Figure 3 It is a structural schematic diagram of the rotating lock block in an embodiment of the present application.

[0038] Figure 4 It is a schematic diagram of the cooperation between the second locking component and the linkage sleeve in the embodiment of the present application.

[0039] Figure 5 This is a usage scenario diagram of the battery pack locking device in an embodiment of the present application.

[0040] Figure 6 It is a schematic diagram of the coordination structure of the battery pack locking mechanism, the lifting assembly and the lifting drive assembly in the embodiment of the present application.

[0041] Figure 7 It is a schematic diagram of the coordination between the lifting assembly and the lifting drive assembly in the embodiment of the present application.

[0042] Explanation of the accompanying drawings: 1. Mounting frame; 11. Positioning plate; 111. Sliding hole; 2. First locking assembly; 21. Fixed shaft; 22. Rotating locking block; 221. Inclined surface; 23. Linkage sleeve; 24. Rotating drive member; 3. Second locking assembly; 31. Cam plate; 32. Locking rod; 33. Arc rod; 34. Unlocking spring; 35. Rolling wheel; 4. Lifting assembly; 41. Lifting base sleeve; 42. Lifting rack column; 43. Support plate; 5. Lifting drive assembly; 51. Active bevel gear; 52. Driven bevel gear; 53. Driven shaft; 54. Transmission spur gear; 6. Rack belt; 7. Transmission gear; 8. Changing shaft; 81. Changing gear. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-7 This application is described in further detail.

[0044] In a first aspect, an embodiment of the present application discloses a battery pack locking mechanism.

[0045] Reference Figure 1 , wherein a mounting cavity is formed in the trunk of the electric vehicle by a decorative panel, and the battery pack locking mechanism and the battery pack are both installed in the mounting cavity. The battery pack is limited in the mounting cavity by the locking mechanism. The battery pack locking mechanism includes a mounting frame 1 installed in the mounting cavity, a first locking component 2, and a second locking component 3.

[0046] Reference Figure 1The mounting frame 1 is bolted to the bottom of the mounting cavity to position the battery pack, and the battery pack is located inside the mounting frame 1. The second locking assembly 3 is linked with the first locking assembly 2; when the first locking assembly 2 is in a locked state for the battery pack on the electric vehicle, the second locking assembly 3 is also in a locked state for the battery pack on the electric vehicle; when the first locking assembly 2 is in an unlocked state for the battery pack on the electric vehicle, the second locking assembly 3 is also in an unlocked state for the battery pack on the electric vehicle.

[0047] Reference Figure 1 and Figure 2 In this embodiment, the battery pack is a rectangular cube as an example, and the mounting frame 1 is composed of four L-shaped positioning plates 11 of the same structure. The positioning plates 11 are fixed to the bottom of the mounting cavity by bolts, and the positioning plates 11 extend along the opening direction of the mounting cavity. The inner corners of the positioning plates 11 face the battery pack, and the four positioning plates 11 are located at the four right angles of the battery pack, so that the battery pack is placed in the mounting frame 1 and is limited in two directions perpendicular to the opening of the mounting cavity.

[0048] The first locking assembly 2 includes a fixed shaft 21, a rotating lock block 22, a linkage sleeve 23 and a rotating drive member 24. The fixed shaft 21 is fixed to the bottom of the installation cavity by bolts, and the fixed shaft 21 is located on one side outside the installation frame 1. The rotating lock block 22 is welded and fixed to one end of the linkage sleeve 23, and the linkage sleeve 23 is sleeved on the fixed shaft 21 and rotates on the fixed shaft 21. One end of the rotating drive member 24 is rotatably mounted on the cavity wall of the installation cavity, and the other end is rotatably mounted on the rotating lock block 22, thereby driving the rotating lock block 22 to rotate and extend to the inside of the installation frame 1 to limit and lock the battery pack in the installation cavity.

[0049] Reference Figure 1 and Figure 3 , an inclined surface 221 is provided on the side wall of the rotating lock block 22. The inclined surface 221 gradually inclines toward the bottom of the installation cavity along the direction in which the rotating lock block 22 rotates from the outside of the installation frame 1 to the inside of the installation frame 1. When the rotating lock block 22 rotates to lock the battery pack, it gradually presses against the battery pack under the action of the inclined surface 221, thereby limiting the position of the battery pack.

[0050] In this embodiment, the rotary drive member 24 is preferably a cylinder, and a rotating ear is integrally formed on the wall of the installation cavity, and the bottom of the cylinder is rotatably mounted on the rotating ear through a rotating pin. A rotating ear is welded on the side wall of the rotary lock block 22, and the piston rod of the cylinder is rotatably mounted on the rotating ear through a rotating pin, thereby driving the rotary lock block 22 to rotate to limit the battery pack.

[0051] Reference Figure 1 and Figure 4The second locking assembly 3 includes a cam plate 31, a locking rod 32, an arc rod 33, an unlocking spring 34 and a rolling wheel 35. The cam plate 31 is sleeved and welded to the linkage sleeve 23. The arc rod 33 is integrally formed at one end of the locking rod 32 close to the cam plate 31, and the locking rod 32 is located at the top of the arc of the arc rod 33. The length of the arc rod 33 in the extending direction is greater than the width of the locking rod 32 perpendicular to its own sliding direction. The end of the locking rod 32 away from the arc rod 33 passes through the positioning plate 11 and is inserted into the outer shell of the battery pack under the action of the cam plate 31. The unlocking spring 34 is sleeved on the locking rod 32 so that the locking rod 32 can automatically contact the lock of the battery pack after the cam plate 31 is reset. The rolling wheel 35 is detachably and rotatably installed on the arc rod 33. After the cam plate 31 rotates, it will cooperate with the rolling wheel 35, thereby driving the locking rod 32 to slide more smoothly.

[0052] Reference Figure 2 and Figure 4 It is worth mentioning that a locking hole for inserting the locking rod 32 is provided on the outer wall of the battery pack shell. After the locking rod 32 is inserted into the locking hole, the battery pack is locked. A sliding hole 111 is provided on the positioning plate 11. The sliding hole 111 is connected to the locking hole. The locking rod 32 is partially inserted into the sliding hole 111 and slides under the action of the cam plate 31. One end of the unlocking spring 34 abuts against the side of the positioning plate 11 close to the cam plate 31, and the other end abuts against the arc rod 33 to provide a driving force for the locking rod 32 to disengage from the locking hole. Among them, since the locking rod 32 gradually slides toward the inside of the mounting frame 1 under the action of the cam plate 31, an inclined groove connected to the locking hole is provided on the battery pack shell, and then the locking rod 32 penetrates into the inclined groove little by little during the slow sliding process, and is finally inserted into the locking hole.

[0053] The rolling wheel 35 is detachably mounted on the side of the arc rod 33 away from the bottom of the installation cavity through the thread of the threaded rod, and the rolling wheel 35 is rotatably mounted on the threaded rod, so that the rolling wheels 35 of different diameters can be replaced; the thickness of the cam plate 31 is greater than the thickness of the arc rod 33 plus the thickness of the rolling wheel 35. This arrangement allows the locking mechanism to adapt to battery packs of different sizes.

[0054] Reference Figure 2 and Figure 4Specifically, when the battery pack is large in size, since the positioning plates 11 are installed on the bottom of the installation cavity by bolts, the positioning plates 11 can be removed first to adjust the size of the installation frame 1, and then the rolling wheel 35 can be removed. The cam plate 31 will then rotate and abut against the arc rod 33, thereby driving the locking rod 32 to slide a shorter distance and be inserted into the larger battery pack. When the battery pack is small in size, first adjust the size of the installation frame 1, and then install the rolling wheel 35 of the corresponding size. When the cam plate 31 rotates, it first abuts against the arc rod 33 to make the locking rod 32 slide, and then as it rotates, it will abut against the outer wall of the rolling wheel 35, thereby driving the locking rod 32 to slide further in the direction away from the cam plate 31, and then inserted into the locking hole. The above scenarios are all carried out under the condition that the locking rod 32 slides and extends to the inside of the installation frame 1.

[0055] The implementation principle of a battery pack locking mechanism in an embodiment of the present application is: the battery pack is placed in the installation frame 1 inside the installation cavity; then the rotating driving member 24 drives the rotating locking block 22 to rotate toward the inside of the installation frame 1, and then the rotating locking block 22 abuts against the side of the battery pack away from the bottom of the installation cavity to limit the battery bar.

[0056] When the rotary lock block 22 rotates, the linkage sleeve 23 drives the cam plate 31 to rotate. After the cam plate 31 rotates, it drives the locking rod 32 to slide toward the inside of the installation frame 1 and then insert into the locking hole.

[0057] Among them, since the mounting frame 1 is installed on the bottom of the mounting cavity by bolts, the size of the mounting frame 1 can be adjusted according to the specifications of the battery pack, and then the rolling wheel 35 of the corresponding diameter is installed, and then the cam plate 31 rotates or abuts the rolling wheel 35 to control the moving distance of the locking rod 32.

[0058] In a second aspect, an embodiment of the present application also discloses a battery pack locking device.

[0059] Reference Figure 5 and Figure 6 The battery pack locking device includes a lifting assembly 4, a lifting drive assembly 5, a rack belt 6, a transmission gear 7 and the above-mentioned battery pack locking mechanism. The lifting assembly 4 is located below the battery pack and drives the battery pack to rise and fall under the drive of the lifting drive assembly 5. When the battery pack is taken out, the lifting assembly 4 can lift part of the battery pack to facilitate the staff to take the battery pack out of the installation cavity. Among them, the lifting drive assembly 5 is linked with the rotating lock block 22. When the rotating lock block 22 is in a locked state, the lifting drive assembly 5 drives the lifting assembly 4 to descend. When the rotating lock block 22 is in an unlocked state, the lifting drive assembly 5 drives the lifting assembly 4 to rise.

[0060] Assuming that a set of lifting components 4, lifting drive components 5, transmission gears 7 and a battery pack locking mechanism are a set of linkage mechanisms, four sets of linkage mechanisms are provided in this embodiment, and two sets of four linkage mechanisms form a pair, so there are two pairs, and the two pairs are respectively located on opposite sides of the battery pack. The transmission gear 7 is sleeved and fixedly installed on the linkage sleeve 23, and the transmission gear 7 is located on the inner side of the rack ring belt 6 and meshes with the rack ring belt 6, thereby making the four battery pack locking mechanisms synchronously locked or unlocked.

[0061] In this device, the portion of the battery pack pressed by the rotating lock block 22 is relatively short, so that a slight rotation of the rotating lock block 22 does not press the battery pack tightly. At the same time, under the action of the inclined surface 221, there is no interference with the rise of the battery pack.

[0062] Reference Figure 5 and Figure 6 , four sets of lifting components 4 are located at four right angles at the bottom of the battery pack. The lifting components 4 include a lifting base cover 41, a lifting rack column 42 and a supporting plate 43. The lifting base cover 41 is fixed to the bottom of the installation cavity by bolts, the lifting rack column 42 is slidably inserted into the lifting base cover 41, and the teeth on the side wall of the lifting rack column 42 protrude from the lifting base cover 41. The supporting plate 43 is welded to the end of the lifting rack column 42 away from the lifting base cover 41, thereby increasing the contact area between the lifting rack column 42 and the battery pack, making the battery pack more stable when lifting.

[0063] Reference Figure 6 and Figure 7 The lifting drive assembly 5 includes an active bevel gear 51, a driven bevel gear 52, a driven shaft 53 and a transmission spur gear 54. The active bevel gear 51 is sleeved and fixed on the linkage sleeve 23, and the driven bevel gear 52 and the transmission spur gear 54 are both key-connected to the driven shaft 53 and rotate synchronously with the transmission shaft. One end of the transmission shaft passes through the positioning plate 11 and is located inside the mounting frame 1, so that the positioning plate 11 plays a supporting role, the driven bevel gear 52 and the active bevel gear 51 are meshed with each other, and the transmission spur gear 54 and the lifting rack column 42 are meshed with each other. When the rotating lock block 22 drives the linkage sleeve 23 to rotate, the active bevel gear 51 will also rotate synchronously, so that the transmission spur gear 54 drives the lifting rack column 42 to rise or fall. Among them, the number of teeth of the transmission spur gear 54 is less than the number of teeth of the driven bevel gear 52, so that the battery pack can be lifted to a higher distance.

[0064] Reference Figure 5 The four right angles of the battery pack are fixed with a direction-changing shaft 8 by bolts, and a direction-changing gear 81 is rotatably mounted on the direction-changing shaft 8. The direction-changing gear 81 is located inside the rack belt 6 and meshes with the rack belt 6. This makes it difficult for the rack belt 6 to interfere with the battery pack. Since the teeth on the rack belt 6 are too dense, the teeth of the direction-changing gear 81 and the rack belt 6 are not shown in the figure for intuitive viewing of the attached figure.

[0065] It is worth noting that only one rotary driving member 24 is provided to match a corresponding rotary locking block 22, thereby reducing the driving source and saving costs.

[0066] The implementation principle of a battery pack locking mechanism in an embodiment of the present application is: when installing the battery pack, the battery pack is placed on the supporting plate 43, and then the rotating driving member 24 drives the corresponding rotating locking block 22 to rotate into the installation frame 1 to lock the battery pack.

[0067] During the rotation of the rotary lock block 22, the locking rod 32 is inserted into the locking hole to lock the battery pack. At the same time, the linkage sleeve 23 drives the active bevel gear 51 to rotate, the active bevel gear 51 drives the driven bevel gear 52 to rotate, and the transmission spur gear 54 and the driven bevel gear 52 rotate synchronously to drive the lifting rack column 42 to descend so that the battery pack is completely located inside the installation cavity.

[0068] When the battery pack needs to be removed, the rotary drive member 24 drives the rotary lock block 22 to rotate out of the mounting frame 1, and the locking rod 32 slides out of the locking hole. The linkage sleeve 23 drives the active bevel gear 51 to rotate, and the active bevel gear 51 drives the driven bevel gear 52 to rotate. The transmission spur gear 54 and the driven bevel gear 52 rotate synchronously to drive the lifting rack column 42 to rise, thereby ejecting part of the battery pack from the mounting cavity to facilitate the staff to remove the battery pack from the mounting cavity. The rack belt 6 enables multiple locking mechanisms and the lifting assembly 4 to be linked, thereby reducing the driving source.

[0069] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A battery pack locking device, characterized in that: It comprises a lifting assembly (4), a lifting drive assembly (5) and a battery pack locking mechanism, wherein the lifting assembly (4) is mounted on the bottom of the mounting cavity and is used to drive the battery pack to lift, and the lifting drive assembly (5) is linked with a rotating locking block (22) to drive the lifting assembly (4) to rise or fall; The battery pack locking mechanism comprises a first locking assembly (2), comprising a fixed shaft (21) and a rotating locking block (22) rotatably mounted on the fixed shaft (21); the rotating locking block (22) is cantilevered toward the interior of the cavity and pressed against a side of the battery pack housing away from the bottom of the mounting cavity when in a locked state; the first locking assembly (2) further comprises a linkage sleeve (23); the linkage sleeve (23) is sleeved on the fixed shaft (21) and fixedly connected to the rotating locking block (22); and a cam plate (31) is sleeved on the linkage sleeve (23) and fixedly connected to the linkage sleeve (23); A second locking assembly (3) comprises a locking rod (32) slidably mounted in the mounting cavity and a cam plate (31) which is linked with the rotating locking block (22) and drives the locking rod (32) to slide into the middle of the battery pack shell to lock the battery pack shell; When the rotating lock block (22) is in an unlocked state, the lifting assembly (4) drives the battery pack to rise out of the installation cavity, and the locking rod (32) slides out of the battery pack shell to be in an unlocked state; when the rotating lock block (22) is in a locked state, the lifting assembly (4) drives the battery pack to descend and be located in the installation cavity, and the locking rod (32) is inserted into the battery pack shell to lock the battery pack; the lifting assembly (4) comprises a lifting base cover (41) and a lifting rack column (42); the lifting base cover (41) is installed at the bottom of the installation cavity, and the lifting rack column (42) is slidably installed on the lifting base The lifting drive assembly (5) is mounted in a sleeve (41) and cooperates with the lifting drive assembly (5); the lifting drive assembly (5) comprises an active bevel gear (51), a driven bevel gear (52), a driven shaft (53) and a transmission spur gear (54); the active bevel gear (51) is sleeved and fixed on the linkage sleeve (23); the driven bevel gear (52) and the transmission spur gear (54) are both mounted on the driven shaft (53) and rotate synchronously with the driven shaft (53); the driven bevel gear (52) meshes with the active bevel gear (51); and the transmission spur gear (54) meshes with the lifting rack column (42); It also includes a rack belt (6), a plurality of the battery pack locking mechanisms, the lifting components (4) and the lifting drive components (5) are arranged at intervals around the battery pack, and one battery pack locking mechanism corresponds to one group of the lifting components (4) and the lifting drive components (5), a transmission gear (7) is sleeved and fixed on each linkage sleeve (23), and a plurality of the transmission gears (7) are located inside the rack belt (6) and mesh with the rack belt (6).

2. A battery pack locking device according to claim 1, characterized in that: It also includes a mounting frame (1) for placing a battery pack, the battery pack being partially located within the mounting frame (1), the locking rod (32) being slidably mounted on the mounting frame (1) and partially cantilevered into the interior of the mounting frame (1), and the locking rod (32) being sleeved with an unlocking spring (34) for enabling the locking rod (32) to release the battery pack housing from being locked.

3. A battery pack locking device according to claim 2, characterized in that: The second locking assembly (3) further comprises an arc-shaped rod (33) arranged on a side of the locking rod (32) close to the cam plate (31) and cooperating with the cam plate (31); one end of the unlocking spring (34) abuts against the mounting frame (1) and the other end abuts against the arc-shaped rod (33).

4. A battery pack locking device according to claim 3, characterized in that: The arc-shaped rod (33) is detachably and replaceably mounted with a rolling wheel (35) having a different diameter that matches the cam plate (31).

5. A battery pack locking device according to claim 1, characterized in that: The rotating lock block (22) is provided with an inclined surface (221) for gradually pressing the battery pack.

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