CN220009437U - Battery pack locking mechanism with driving function and electric vehicle - Google Patents

Abstract

The utility model discloses a battery pack locking mechanism with driving and an electric vehicle, wherein the battery pack locking mechanism with driving is used for being matched with a lock seat to lock a battery pack on the electric vehicle, one of the locking mechanism and the lock seat is connected with the battery pack, the other is connected with the electric vehicle, the locking mechanism comprises a locking structure and a driving structure, the locking structure comprises a lock shell and a locking piece, and the locking piece is arranged in the lock shell and can rotate relative to the lock shell; the driving structure is connected with the lock shell and drives the locking piece to rotate so that the locking piece is locked or unlocked on the lock seat. The driving structure is connected with the lock shell, and the driving structure and the locking structure are integrated together, so that the driving structure is not required to be arranged on the power conversion equipment, the structure of the power conversion equipment is simplified, and the power conversion efficiency is improved.

Description

Battery pack locking mechanism with driving function and electric vehicle

Technical Field

The utility model belongs to the field of new energy automobiles, and particularly relates to a battery pack locking mechanism with a drive function and an electric vehicle.

Background

The development of new energy electric vehicles is rapid, and the battery setting mode of the existing electric vehicles is generally divided into a fixed type and a replaceable type, wherein the fixed type battery is generally fixed on a vehicle, and the vehicle is directly used as a charging object during charging. The replaceable battery is generally fixed on the bracket of the vehicle in a movable mounting manner, and the battery can be taken down to be independently replaced or charged, and is mounted on the vehicle after the replaced battery is charged.

For interchangeable battery, the battery passes through locking mechanism locking on electric vehicle, however, at present locking mechanism is usually driven in order to realize locking and unlocking of locking mechanism by the drive structure on the battery replacement equipment, and then realizes the installation and the dismantlement of battery for battery replacement equipment structure is complicated, and occupation space is great, and the battery replacement efficiency is low.

Disclosure of Invention

The first object of the present utility model is to provide a battery pack locking mechanism with driving, wherein the driving structure is connected with the lock shell, and the driving structure and the locking structure are integrated together, so that the driving structure is not required to be arranged on a power exchange device, the structure of the power exchange device is simplified, and the power exchange efficiency is improved.

A second object of the present utility model is to provide an electric vehicle, in which a lock mechanism of the electric vehicle has a driving structure that can drive a locking member to rotate so that the locking member is locked or unlocked to a lock base, and the driving structure is connected to a lock case, occupies a relatively small space, and can expand a design space of a battery pack and the electric vehicle.

In order to achieve the first object of the present utility model, the present utility model adopts the following technical scheme:

a belt-driven battery pack locking mechanism for cooperating with a lock base to lock a battery pack on an electric vehicle, one of the locking mechanism and the lock base being connected with the battery pack, the other being connected with the electric vehicle, the locking mechanism comprising a locking structure and a driving structure, the locking structure comprising a lock housing and a locking member, the locking member being disposed in the lock housing and rotatable relative to the lock housing; the driving structure is connected with the lock shell and drives the locking piece to rotate so that the locking piece is locked or unlocked on the lock seat.

The driving structure is connected with the lock shell, and the driving structure and the locking structure are integrated together, so that the driving structure is not required to be arranged on the power conversion equipment, the structure of the power conversion equipment is simplified, and the power conversion efficiency is improved.

As a preferred embodiment of the belt-driven battery pack locking mechanism, the drive structure is provided with a drive element and a transmission assembly, the transmission assembly connecting the locking element and the drive element, the drive element driving the locking element to rotate via the transmission assembly.

In this scheme, the driving piece passes through drive assembly drive locking piece rotation, and drive assembly can decide power transmission's mode and direction, sets up different drive assembly according to the actual conditions and can improve space utilization, transmission efficiency etc..

As a preferred implementation manner of the belt-driven battery pack locking mechanism, the transmission assembly comprises a gear transmission group, the gear transmission group at least comprises a first gear and a second gear, the first gear is connected with the driving piece, and the second gear is sleeved on the outer wall of the locking piece; or the transmission assembly comprises a worm and gear transmission group, the worm is connected with the driving piece, and the worm wheel is sleeved on the outer wall of the locking piece; or, the transmission assembly comprises a first coupler, and the first coupler is sleeved on the outer wall of the locking piece.

In this scheme, the drive assembly can be the gear drive group, thereby the gear drive group transmits the driving force of driving piece to the locking piece and makes the locking piece rotatory, through the gear quantity and the gear size of control gear drive group, and the distance of driving piece and locking piece can freely set up, and the transmission ratio between driving piece and the locking piece can freely set up. The transmission assembly can also be a worm and gear transmission group, the worm and gear transmission group transmits the driving force of the driving piece to the locking piece so as to enable the locking piece to rotate, the distance between the driving piece and the locking piece can be controlled by controlling the length of the worm, and the transmission direction of the force can be changed by the worm and gear transmission group, so that the height space occupied by the driving structure is reduced. Or the transmission assembly comprises a first coupler, and the driving force of the driving piece is coaxially transmitted to the locking piece through the first coupler, so that the locking piece rotates, and the width space occupied by the driving structure is reduced.

As a preferred embodiment of the belt-driven battery pack locking mechanism, the transmission assembly comprises a transmission shaft, the worm being connected to the transmission shaft via a second coupling and/or the transmission shaft being connected to the drive element via the second coupling.

In this scheme, when drive assembly is worm gear drive group, the both ends of transmission shaft can both be connected with worm and driving piece respectively through the second coupling, and the second coupling can absorb impact and vibration, makes the transmission of power more stable.

As a preferred implementation of the belt-driven battery pack locking mechanism, the driving structure comprises a speed reducer, and two ends of the speed reducer are respectively connected with the driving piece and the transmission assembly.

In this scheme, set up the reduction gear between driving piece and drive assembly, specifically can be the harmonic speed reducer, reduce the rotational speed of driving piece, increase torque action can make the driving piece of miniwatt, realizes big moment of torsion output in order to support the locking of battery package, practices thrift the cost, reduces moment of inertia, improves the stability of force transmission.

As a preferred implementation of the battery pack locking mechanism with driving, the locking piece comprises a lock shaft and a lock head, wherein the lock head is connected to one end of the lock shaft and is provided with a lock surface, and the lock seat is provided with a lock opening; when the lock head passes through the locking port, the lock shaft drives the lock head to rotate under the drive of the driving structure, so that the locking surface is abutted or separated from the end face of the lock seat, and locking or unlocking between the locking piece and the lock seat is realized.

In the scheme, when the lock surface is abutted with the end surface of the lock seat, the locking piece is locked with the lock seat; when the lock surface is separated from the end surface of the lock seat, the locking piece is unlocked from the lock seat.

As a preferred embodiment of the belt-driven battery pack locking mechanism, the locking surface is provided with an elastic wear part.

In this scheme, the friction between tapered end and the lock seat can be alleviateed to elasticity wearing part on the one hand, improves life, and on the other hand can cushion the impact between tapered end and the lock seat, and then cushion the impact between electric vehicle and the battery package.

As a preferred implementation of the belt-driven battery pack locking mechanism, the locking head extends outwardly in the circumferential direction of the locking shaft.

In this scheme, the lock face of tapered end extends outwards along the circumference of lock axle, can fully with the terminal surface butt in lock seat inside.

As a preferred implementation manner of the battery pack locking mechanism with driving, the end face of the lock seat is provided with a locking groove which is staggered with the locking notch, and the locking groove can limit the rotation of the locking head after the locking head enters the locking groove.

In this scheme, the locked groove can restrict the rotation of tapered end, when the tapered end rotate to align the back with the locked groove, the tapered end rises for the lock seat, can make the tapered end get into the locked groove, realizes the locking, because the spacing of locked groove this moment, the tapered end can not rotate any more, and tapered end and lock seat maintain in the locking state, have promoted the reliability of locking.

As a preferred embodiment of the belt-driven battery pack locking mechanism, the outer surface of the locking shaft is provided with a thread, and the driving structure is provided with a screw drive which is in rotary engagement with the thread of the outer surface of the locking shaft.

In the scheme, when the lock surface is in a separated state with the end surface inside the lock seat, the threaded transmission part rotates and can drive the lock shaft to rotate so as to adjust the angle of the lock head; when the lock surface is abutted with the end surface inside the lock seat, the lock shaft can be lifted relative to the lock seat when the threaded transmission member rotates. The screw driving part is in threaded fit with the outer surface of the lock shaft, the lock shaft is enabled to rotate through the screw driving part, the structure is simple and reliable, and the rotation and displacement of the lock shaft can be controlled by controlling the rotation number of the screw driving part.

As a preferred embodiment of the belt-driven battery pack locking mechanism, the threaded transmission part comprises a nut, a gear or a worm wheel, and is sleeved on the locking shaft.

In this scheme, the drive structure is rotated through drive nut, gear or worm wheel in order to drive the lock axle rotation.

As a preferred embodiment of the belt-driven battery pack locking mechanism, the outer circumference of the locking element is provided with a bearing, and the end of the threaded transmission element is supported on the end face of the bearing.

In this scheme, the bearing plays the rotatory effect of support screw thread driving medium.

As a preferred implementation of the belt-driven battery pack locking mechanism, at least two locking members are provided, and the driving structure drives each locking member to synchronously rotate so as to synchronously lock or unlock the locking member to the lock seat.

In the scheme, the driving structure can drive at least two locking pieces to synchronously rotate so as to synchronously lock or unlock corresponding lock seats, so that at least two lock points of the battery pack can be synchronously locked and unlocked, and when the number of the lock points is large, the locking and unlocking efficiency is high, and the reliability of synchronous locking and unlocking is high.

As a preferred implementation of the belt-driven battery pack locking mechanism, the drive structure is driven by the vehicle or the drive structure is provided with an independent power source.

The power source of drive structure can set up according to the demand, in this scheme, drive structure can be by electric vehicle direct drive, saves independent power supply's design, avoids appearing the condition that drive structure does not have the electricity.

In order to achieve the first object of the present utility model, the present utility model adopts the following technical scheme:

an electric vehicle comprising a belt-driven battery pack locking mechanism as described in any one of the preceding claims. The locking mechanism of the electric vehicle is provided with the driving structure, the driving structure is connected with the lock shell, the driving structure and the locking structure are integrated together, the driving structure is not required to be arranged on the power exchange equipment, the structure of the power exchange equipment is simplified, and the power exchange efficiency is improved.

By adopting the technical scheme, the utility model has the following beneficial effects:

the driving structure is connected with the lock shell, and the driving structure and the locking structure are integrated together, so that the driving structure is not required to be arranged on the power conversion equipment, the structure of the power conversion equipment is simplified, and the power conversion efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model and do not constitute a limitation on the utility model. In the drawings:

fig. 1 is a schematic perspective view of an electric vehicle according to example 4 of the embodiment of the present utility model;

FIG. 2 is an enlarged view of the structure of FIG. 1 at A;

fig. 3 is a schematic perspective view of a locking mechanism of example 1 according to an embodiment of the present utility model;

FIG. 4 is a schematic view showing a semi-sectional structure of a locking mechanism of example 1 in the embodiment of the present utility model;

FIG. 5 is a schematic perspective view of a locking member of an exemplary embodiment of a belt-driven battery pack locking mechanism of the present utility model;

FIG. 6 is a schematic perspective view of a lock base in an exemplary embodiment of a belt-driven battery pack locking mechanism of the present utility model;

FIG. 7 is a schematic perspective view of a lock base in an exemplary embodiment of a belt-driven battery pack locking mechanism of the present utility model;

FIG. 8 is a schematic partial perspective view of a locking mechanism of example 2 according to an embodiment of the present utility model;

FIG. 9 is a schematic partial perspective view of a locking mechanism of example 2 according to an embodiment of the present utility model;

FIG. 10 is a schematic view showing a semi-sectional structure of a locking mechanism of example 2 in the embodiment of the present utility model;

FIG. 11 is a schematic view showing a half-sectional structure of a worm screw of example 2 in the embodiment of the present utility model;

fig. 12 is a schematic perspective view of a locking mechanism of example 3 according to an embodiment of the present utility model;

fig. 13 is a schematic view showing a semi-sectional structure of a locking mechanism of example 3 in the embodiment of the present utility model.

The reference numerals in the drawings illustrate:

1. a lock base; 11. locking the opening; 12. a locking groove;

2. a battery pack;

3. an electric vehicle; 31. a bracket is quickly replaced;

4. a locking structure; 41. a lock case; 42. a locking member; 421. a lock shaft; 422. a lock head; 4221. a locking surface; 423. an elastic wear part;

5. a driving structure; 51. a driving member; 52. a transmission assembly; 521. a first coupling; 522. a speed reducer; 523. a transmission shaft; 53. a gear drive set; 531. a first gear; 532. a second gear; 54. a worm gear transmission group; 541. a worm; 542 worm gear; 55. a second coupling; 56. a nut; 57. a bearing; 58. a steering gear.

Detailed Description

In order to more clearly illustrate the general inventive concept, a detailed description is given below by way of example with reference to the accompanying drawings.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, however, the present utility model may be practiced in other ways than those described herein, and therefore the scope of the present utility model is not limited to the specific embodiments disclosed below. It should be noted that, without conflict, embodiments of the present utility model and features in each embodiment may be combined with each other.

In addition, in the description of the present utility model, it should be understood that the terms "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; the device can be mechanically connected, electrically connected and communicated; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Example 1:

referring to fig. 1-7, the present embodiment proposes a battery pack locking mechanism with driving, for cooperating with a lock base 1 to lock a battery pack 2 on an electric vehicle 3, one of the locking mechanism and the lock base 1 is connected with the battery pack 2, the other is connected with the electric vehicle 3, the locking mechanism comprises a locking structure 4 and a driving structure 5, the locking structure 4 comprises a lock shell 41 and a locking member 42, and the locking member 42 is disposed in the lock shell 41 and can rotate relative to the lock shell 41; the driving structure 5 is connected with the lock case 41, and the driving structure 5 drives the locking member 42 to rotate so as to lock or unlock the locking member 42 to the lock base 1.

The driving structure 5 is connected with the lock shell 41, the driving structure 5 and the locking structure 4 are integrated together, the driving structure 5 is not required to be arranged on the power exchange equipment, the structure of the power exchange equipment is simplified, and the power exchange efficiency is improved.

Referring to fig. 2, the locking member 42 may be disposed on the quick-change bracket 31 of the electric vehicle 3, the driving structure 5 may be disposed on the quick-change bracket 31 of the electric vehicle 3, and in other embodiments, the driving locking member 42 and the driving structure 5 may be disposed directly on the electric vehicle 3.

Referring to fig. 3 and 4, in the present embodiment, the driving structure 5 includes a driving member 51 and a transmission assembly 52, the transmission assembly 52 is connected to the locking member 42, and the driving member 51 drives the locking member 42 to rotate through the transmission assembly 52.

In this way, the driving member 51 drives the locking member 42 to rotate through the transmission assembly 52, the transmission assembly 52 can determine the power transmission mode and direction, and the space utilization rate, the force transmission efficiency and the like can be improved by arranging different transmission assemblies 52 according to actual situations.

Further, in the present embodiment, referring to fig. 3 and 4, the transmission assembly 52 includes a gear transmission group 53, and the gear transmission group 53 includes at least a first gear 531 and a second gear 532, where the first gear 531 is connected to the driving member 51, and the second gear 532 is sleeved on the outer wall of the locking member 42.

In this way, the gear train 53 transmits the driving force of the driving member 51 to the locking member 42 to rotate the locking member 42, and the distance between the driving member 51 and the locking member 42 can be freely set by controlling the number and size of gears of the gear train 53, and the transmission ratio between the driving member 51 and the locking member 42 can be freely set.

Still further, referring to fig. 4, the driving structure 5 includes a decelerator 522, and both ends of the decelerator 522 are respectively connected to the driving member 51 and the first gear 531. In this embodiment, the speed reducer 522 may be specifically a harmonic speed reducer, which reduces the rotation speed of the driving member 51, increases the torque effect, and may enable the driving member 51 with low power to achieve large torque output to support the locking and unlocking of the battery pack 2, thereby saving the cost, reducing the motion inertia, and improving the stability of force transmission.

In this embodiment, the lock housing 41 may be divided into an upper and a lower part, the lower half of the lock housing 41 may be provided with an inwardly protruding step structure, in order to support the rotation of the second gear 532, referring to fig. 4, the second gear 532 is located at the upper half of the lock housing 41, the outer circumference of the locking member 42 is provided with bearings 57, the upper and lower ends of the second gear 532 are respectively supported on the lock housing 41 through thrust ball bearings, the other ends of the thrust ball bearings located at the lower ends of the second gear 532 are supported on the step structure of the lower half of the lock housing 41, and in other embodiments, the types of the bearings 57 are not limited to the thrust ball bearings, but may be other types of bearings 57, such as tapered roller bearings.

Referring to fig. 4 to 7, in the present embodiment, the locking member 42 includes a lock shaft 421 and a lock head 422, the lock head 422 is connected to one end of the lock shaft 421 and has a locking surface 4221, and the lock base 1 is provided with a locking hole 11; when the lock head 422 passes through the locking port 11, the lock shaft 421 drives the lock head 422 to rotate under the drive of the driving structure 5, so that the locking surface 4221 abuts against or is separated from the end surface of the lock seat 1, and locking or unlocking between the locking piece 42 and the lock seat 1 is realized.

In this way, under the driving of the driving structure 5, the lock shaft 421 drives the lock head 422 to rotate, so that the locking member 42 can be locked with the lock seat 1 when the lock surface 4221 abuts against the end surface of the lock seat 1; when the lock shaft 421 drives the lock head 422 to rotate or rotate reversely, the locking surface 4221 can be separated from the end surface of the lock base 1, and the locking piece 42 can be unlocked from the lock base 1.

Those skilled in the art will appreciate that the lock shaft 421 and the lock head 422 may be integrally formed, or may be two separate structures that are detachably connected.

The lock head 422 is only required to have a structure protruding from the outer surface of the lock shaft 421 so that the lock surface 4221 is abutted against and separated from the end surface of the lock base 1, and preferably, referring to fig. 5, in this embodiment, the lock head 422 extends outward in the circumferential direction of the lock shaft 421.

Thus, the lock surface 4221 of the lock head 422 extends outward in the circumferential direction of the lock shaft 421, and can sufficiently abut against the end surface inside the lock base 1.

Those skilled in the art will appreciate that the structural shape of the locking head 422 is not limited to the inverted quadrangular pyramid shape provided in fig. 5.

In this embodiment, the end surface of the lock base 1 is provided with a locking groove 12 which is offset from the locking notch 11, and the locking groove 12 can limit the rotation of the locking head 422 after the locking head 422 enters the locking groove 12.

Therefore, the lock groove 12 can limit the rotation of the lock head 422, when the lock head 422 rotates to be aligned with the lock groove 12, the lock head 422 ascends relative to the lock seat 1, so that the lock head 422 can enter the lock groove 12 to realize locking, and at the moment, the lock head 422 can not rotate any more due to the limit of the lock groove 12, the lock head 422 and the lock seat 1 are maintained in a locking state, and the reliability of locking is improved.

Referring to fig. 4 and 5, the outer surface of the lock shaft 421 is provided with threads, and the transmission assembly 52 includes a threaded transmission member rotatably engaged with the threads of the outer surface of the lock shaft 421, and in this embodiment, the second gear 532 is internally provided with threads, which can be engaged with the threads of the outer wall of the lock shaft 421 as a threaded transmission member.

Thus, when the lock surface 4221 is separated from the end surface inside the lock base 1, the screw driving member rotates to drive the lock shaft 421 to rotate, so as to adjust the angle of the lock head 422; when the lock surface 4221 abuts against the end surface inside the lock base 1, the lock shaft 421 can be lifted and lowered relative to the lock base 1 when the screw driver rotates. The screw driving member is in screw fit with the outer surface of the lock shaft 421, the lock shaft 421 is rotated by the screw driving member, the structure is simple and reliable, and the rotation and displacement of the lock shaft 421 can be controlled by controlling the number of turns of the screw driving member.

The driving manner of the driving structure 5 is different, the threaded transmission member may also be different, and in other embodiments, the threaded transmission member may be in other structures.

In this embodiment, the locking surface 4221 is provided with an elastic wear member 423.

In this way, the elastic wear-resistant piece 423 can reduce friction between the lock head 422 and the lock seat 1, improve service life, and buffer impact between the lock head 422 and the lock seat 1, and further buffer impact between the electric vehicle 3 and the battery pack 2.

In the present embodiment, the driving structure 5 is driven by the electric vehicle 3, or the driving structure 5 is provided with an independent power source.

The power source of the driving structure 5 can be set according to the requirements, so that the driving structure 5 can be directly driven by the electric vehicle 3, the design of an independent power supply is omitted, and the condition that the driving structure 5 is not powered on is avoided.

Example 2:

embodiment 2 differs from embodiment 1 in the structural form of the transmission assembly 52.

In embodiment 2, referring to fig. 8-11, the transmission assembly 52 includes a worm gear set 54, a worm 541 is connected to the driving member 51, and a worm wheel 542 is sleeved on the outer wall of the locking member 42. Still further, referring to fig. 8 to 11, the transmission assembly 52 includes a transmission shaft 523, the worm 541 is connected to the transmission shaft 523 through the second coupling 55, and the transmission shaft 523 is connected to the driving member 51 through the second coupling 55. Referring to fig. 10, threads are provided inside the worm gear 542, and the worm gear 542 may be engaged with threads of the outer wall of the lock shaft 421 as a screw driver. Referring to fig. 10, the lower end of the worm wheel 542 is supported by the lock case 41 through the thrust ball bearing 57, and the lower end of the thrust ball bearing 57 is supported by the stepped structure of the lower half of the lock case 41, and in other embodiments, the bearing 57 is not limited to the thrust ball bearing, but may be a tapered roller bearing.

In this way, the worm gear set 54 transmits the driving force of the driving member 51 to the locking member 42 so as to rotate the locking member 42, the distance between the driving member 51 and the locking member 42 can be controlled by controlling the length of the worm 541, and the worm gear set 54 can change the force transmission direction, so that the height space occupied by the driving structure 5 is reduced. Both ends of the transmission shaft 523 may be connected to the worm 541 and the driving member 51 through the second coupling 55, respectively, and the second coupling 55 may absorb shock and vibration, thereby making the transmission of force more stable.

Referring to fig. 8, in the present embodiment, the locking member 42 is provided with at least two, specifically, the driving member 51 is provided with the steering gear 58 on both sides to simultaneously transmit power to both sides, and each side steering gear 58 drives the locking member 42 to rotate sequentially through the second coupling 55, the transmission shaft 523, the second coupling 55, the worm 541, and the worm wheel 542, whereby the driving structure 5 drives each locking member 42 to rotate synchronously to lock or unlock the locking member 42 to the lock base 1 synchronously.

Through the above structural scheme, the driving structure 5 can drive at least two locking pieces 42 to synchronously rotate so as to synchronously lock or unlock the corresponding lock seat 1, so that at least two lock points of the battery pack 2 can be synchronously locked and unlocked, and when the number of the lock points is large, the locking and unlocking efficiency is high, the reliability of synchronous locking and unlocking is high, and the structure of the battery replacing equipment can be simplified.

Example 3:

embodiment 3 differs from embodiment 1 in the structural form of the transmission assembly 52.

In embodiment 3, referring to fig. 12 and 13, the transmission assembly 52 includes a first coupling 521, both ends of the first coupling 521 are respectively connected to the driving member 51 and the locking member 42, and the first coupling 521 is sleeved on the outer wall of the locking member 42. Referring to fig. 13, the screw driver may be a nut 56 that cooperates with the screw thread of the outer wall of the lock shaft 421, and the first coupling 521 connects the nut 56 with the driver 51. Referring to fig. 13, the outer wall of the nut 56 is supported by the inner wall of the lock case 41 through two tapered roller bearings 57, and in other embodiments, the bearings 57 are not limited to tapered roller bearings, but may be thrust ball bearings.

In this way, in the present embodiment, the transmission assembly 52 includes the first coupling 521, and the driving force of the driving member 51 is coaxially transmitted to the locking member 42 through the first coupling 521, so that the locking member 42 rotates, and the width space occupied by the driving structure 5 is reduced.

Still further, referring to fig. 13, in the present embodiment, the driving structure 5 includes a reducer 522, and two ends of the reducer 522 are connected to the driving member 51 and the first coupling 521, respectively. In this embodiment, the speed reducer 522 may be specifically a harmonic speed reducer, which reduces the rotation speed of the driving member 51, increases the torque effect, and may enable the low-power driving member 41 to achieve a large torque output to support the locking and unlocking of the battery pack 1, thereby saving the cost, reducing the moment of inertia, and improving the stability of force transmission.

Example 4:

referring to fig. 1 and 2, the present embodiment further proposes an electric vehicle 3, where the electric vehicle 3 includes a battery pack locking mechanism with driving in any of the above embodiments 1 to 3, the locking mechanism of the electric vehicle 3 has a driving structure 5, the driving structure 5 is connected with a lock case 41, the driving structure 5 is integrated with the locking structure 4, and there is no need to provide the driving structure 5 on a power exchange device, so that the structure of the power exchange device is simplified, and the power exchange efficiency is improved.

The utility model can be realized by adopting or referring to the prior art at the places which are not described in the utility model.

In this specification, each embodiment is described in a progressive manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments.

The foregoing is merely exemplary of the present utility model and is not intended to limit the present utility model. Various modifications and variations of the present utility model will be apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the utility model are to be included in the scope of the claims of the present utility model.

Claims (15)

1. A belt-driven battery pack locking mechanism for cooperating with a lock base to lock a battery pack on an electric vehicle, one of the locking mechanism and the lock base being connected with the battery pack, the other being connected with the electric vehicle, the locking mechanism comprising:

the locking structure comprises a lock shell and a locking piece, and the locking piece is arranged in the lock shell and can rotate relative to the lock shell;

the driving structure is connected with the lock shell and drives the locking piece to rotate so that the locking piece is locked or unlocked to the lock seat.

2. The belt driven battery pack locking mechanism of claim 1, wherein said drive structure is provided with a drive member and a transmission assembly, said transmission assembly connecting said locking member and said drive member, said drive member driving said locking member to rotate through said transmission assembly.

3. The belt driven battery pack locking mechanism of claim 2, wherein the transmission assembly comprises a gear drive set comprising at least a first gear and a second gear, the first gear being connected to the driving member, the second gear being sleeved on an outer wall of the locking member;

or the transmission assembly comprises a worm and gear transmission group, the worm is connected with the driving piece, and the worm wheel is sleeved on the outer wall of the locking piece;

or, the transmission assembly comprises a first coupler, and the first coupler is sleeved on the outer wall of the locking piece.

4. A belt actuated battery pack locking mechanism as claimed in claim 3 wherein said transmission assembly includes a drive shaft, said worm being connected to said drive shaft by a second coupling, and/or said drive shaft being connected to said drive member by said second coupling.

5. The belt driven battery pack locking mechanism of claim 2, wherein said drive mechanism comprises a decelerator, said decelerator having two ends respectively connected to said drive member and said transmission assembly.

6. The battery pack locking mechanism of claim 1, wherein the locking member comprises a lock shaft and a lock head, the lock head is connected to one end of the lock shaft and has a locking surface, and the lock seat is provided with a locking opening; when the lock head passes through the locking port, the lock shaft drives the lock head to rotate under the drive of the driving structure, so that the locking surface is abutted or separated from the end face of the lock seat, and locking or unlocking between the locking piece and the lock seat is realized.

7. The belt actuated battery pack locking mechanism as in claim 6, wherein said locking surface is provided with resilient wear members.

8. The belt actuated battery pack locking mechanism as claimed in claim 6, wherein said locking head extends outwardly in a circumferential direction of said locking shaft.

9. The battery pack locking mechanism of claim 6, wherein said end face of said lock base is provided with a locking groove offset from said locking notch, said locking groove being capable of restricting rotation of said locking head after said locking head enters said locking groove.

10. The belt actuated battery pack locking mechanism as in claim 6, wherein said lock shaft outer surface is threaded and said drive structure is provided with a threaded transmission member rotatably engaged with said lock shaft outer surface threads.

11. The belt driven battery pack locking mechanism of claim 10, wherein said threaded drive comprises a nut, gear or worm gear, said threaded drive being sleeved on said lock shaft.

12. The belt driven battery pack locking mechanism as defined in claim 10, wherein said locking member is provided with a bearing around its outer periphery, and an end of said threaded transmission member is supported on an end face of said bearing.

13. The belt actuated battery pack locking mechanism as claimed in claim 1, wherein said locking members are provided in at least two, and said driving structure drives each of said locking members to rotate synchronously to lock or unlock said locking members to said locking seats synchronously.

14. A belt actuated battery pack locking mechanism as claimed in claim 1 wherein said actuating structure is actuated by said vehicle or said actuating structure is provided with an independent power source.

15. An electric vehicle comprising a belt driven battery pack locking mechanism as recited in any one of claims 1-14.