CN219749499U - Battery locking mechanism and electric vehicle - Google Patents

Abstract

The utility model provides a battery locking mechanism and an electric vehicle. This battery locking mechanism includes: support, couple, elastic component and elasticity compression leg. The support is used for being fixed on electric vehicle's vehicle longeron inner panel, and the couple is connected with the support rotation, and the couple still is connected through the elastic component with the support, and the elasticity compression leg sets up on the support. The power battery of the electric vehicle has a support portion, and the elastic member applies an elastic force toward the support portion to the hanger so that the hanger and the elastic pressing post form a clamping portion for commonly clamping the support portion. The battery locking mechanism and the electric vehicle provided by the utility model save the time for replacing the battery of the electric vehicle and improve the power conversion efficiency.

Description

Battery locking mechanism and electric vehicle

Technical Field

The utility model relates to the field of electric vehicle battery replacement equipment, in particular to a battery locking mechanism and an electric vehicle.

Background

In recent years, new energy vehicles have entered a stage of high-speed development. The new energy vehicle takes a power battery as power. The new energy vehicle may include both a direct-charge power battery type and a quick-change power battery type.

The new energy vehicle with the quick-change power battery is characterized in that a welding nut is embedded in a vehicle longitudinal beam of the new energy vehicle, a mounting section is arranged on the power battery, a mounting hole is formed in the mounting section, and a bolt penetrates through the mounting hole and is connected with the nut through threads so as to fix the power battery on the vehicle longitudinal beam.

However, the above-mentioned fixed power battery is cumbersome and time-consuming to operate on the vehicle side member.

Disclosure of Invention

The utility model provides a battery locking mechanism and an electric vehicle, which are used for solving the problems that the locking mechanism is complex in power battery assembling operation and time-consuming in the prior art.

The utility model provides a battery locking mechanism, which is applied to an electric vehicle and comprises: support, couple, elastic component and elasticity compression leg.

The support is used for being fixed on electric vehicle's vehicle longeron inner panel, and the couple is connected with the support rotation, and the couple still is connected through the elastic component with the support, and the elasticity compression leg sets up on the support.

The power battery of the electric vehicle has a support portion, and the elastic member applies an elastic force toward the support portion to the hanger so that the hanger and the elastic pressing post form a clamping portion for commonly clamping the support portion.

In one possible implementation, the battery locking mechanism provided by the utility model has a hook with adjacent abutment surfaces and a guide surface, the abutment surfaces being used to support the support.

The guide surface is the inclined plane, and the guide surface is used for providing the direction of getting into clamping part for the supporting part, and when the supporting part got into clamping part by the guide surface, the couple was rotatory for the support, and the elastic component compresses to make the couple keep away from the supporting part.

In one possible implementation manner, the battery locking mechanism provided by the utility model has a rough abutting surface.

In one possible implementation manner, the battery locking mechanism provided by the utility model further comprises a rotating shaft, wherein the support is provided with two lugs, and the end part of the hook, which is away from the guide surface, is inserted between the two lugs.

The rotating shaft is inserted on the ear seat and part of the hook between the two ear seats so as to enable the hook to rotate relative to the ear seats.

In one possible implementation manner, the battery locking mechanism provided by the utility model is characterized in that one surface of the hook adjacent to the guide surface is provided with a mounting arm, one end of the elastic piece is connected with the mounting arm, and the other end of the elastic piece is connected with the support.

In one possible implementation manner, the battery locking mechanism provided by the utility model is characterized in that the elastic piece and the elastic pressing column are respectively positioned at two opposite sides of the hook, and the elastic pressing column is positioned between the two ear seats.

In one possible implementation manner, the battery locking mechanism provided by the utility model is characterized in that the hook is fixedly connected with the rotating shaft, one end of the elastic piece is connected with the rotating shaft, and the other end of the elastic piece is connected with the support.

The utility model also provides an electric vehicle, which comprises a vehicle longitudinal beam, a power battery and any battery locking mechanism.

The power battery is connected with the vehicle longitudinal beam through a battery locking mechanism.

In one possible implementation, the battery locking mechanism is arranged at intervals around the periphery of the power battery.

The power battery is provided with a plurality of supporting parts, and the supporting parts are arranged in one-to-one correspondence with the battery locking mechanism.

In one possible implementation, the electric vehicle provided by the utility model has a vehicle longitudinal beam fixedly connected with a support of a battery locking mechanism.

According to the battery locking mechanism and the electric vehicle, the support, the hook, the elastic piece and the elastic pressing column are arranged, the support is fixedly connected with the vehicle longitudinal beam, the elastic piece applies elastic force towards the supporting portion on the power battery to the hook, and the hook and the elastic pressing column form a clamping portion for jointly clamping the supporting portion. The supporting part enters the clamping part along the hook guide surface to realize the assembly of the power battery. And the power battery is moved upwards, so that the supporting part applies pressure to the elastic pressing column, the elastic part applies elasticity to the supporting part to the hook, the hook rotates relative to the support, and the hook abutting surface is separated from the power battery, so that the power battery can be disassembled. Thereby realizing the effect of quickly and conveniently replacing the power battery.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present utility model, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a battery locking mechanism according to an embodiment of the present utility model;

fig. 2 is a schematic side view of a battery locking mechanism according to an embodiment of the present utility model;

fig. 3 is a schematic structural diagram of a battery locking mechanism according to another embodiment of the present utility model;

fig. 4 is a position distribution diagram of a battery locking mechanism according to an embodiment of the present utility model.

Reference numerals illustrate:

100-vehicle stringers;

110-vehicle rail inner panel;

200-battery locking mechanism;

210-a support;

211-a rotation axis;

212-ear mount; 2121-a first ear mount; 2122-a second ear mount;

220-clamping part;

221-hooking;

2211—an abutment surface;

2212—a guide surface;

2213-a mounting arm;

222-an elastic compression column;

230-an elastic member;

300-a power cell;

310-a power battery support;

311-lower plane;

312-upper plane.

Specific embodiments of the present utility model have been shown by way of the above drawings and will be described in more detail below. The drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but rather to illustrate the inventive concepts to those skilled in the art by reference to the specific embodiments.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the utility model. Rather, they are merely examples of apparatus and methods consistent with aspects of the utility model as detailed in the accompanying claims.

As described in the background, bolts are used in the prior art to connect a power cell to a vehicle rail. Nuts are embedded in the longitudinal beam of the vehicle body, a section of hole with a matched mounting bolt extends out of the power battery pack, and the power battery is connected with the longitudinal beam of the vehicle body through the bolt. Because the bolts need to be screwed from bottom to top (for example, from the power battery to the longitudinal beam of the vehicle body), when the power battery is replaced and maintained each time, the electric vehicle to be replaced needs to be lifted to a high station through the lifting machine, the power battery is taken down after the disassembly of the bolts is completed, and then a new power battery is fixed on the longitudinal beam of the vehicle through the bolt connection.

It can be seen that the electric vehicle needs to be stopped at a relatively accurate position before the power change operation, so that the electric vehicle is lifted by the lifter, the operation steps are complicated, the time consumption is long, and the requirements on the place for changing and maintaining the power battery are high.

In order to solve the technical problems, the embodiment of the utility model provides a battery locking mechanism and an electric vehicle, which simplify the operation steps of replacing a power battery by replacing a bolt connection mode by a clamping mechanism, thereby shortening the time consumed in the process of fastening the bolt, simultaneously enabling the operation to be simpler and more convenient, and improving the efficiency of replacing the power battery and the inclusion of the environment required by replacing the power battery.

The following describes the technical scheme of the present utility model and how the technical scheme of the present utility model solves the above technical problems in detail with specific embodiments. The following embodiments may be combined with each other, and the same or similar concepts or processes may not be described in detail in some embodiments. Embodiments of the present utility model will be described below with reference to the accompanying drawings:

it should be noted that, the battery locking mechanism 200 provided in the embodiment of the present utility model may be applied to various electric vehicles.

Referring to fig. 1 and 2, a battery locking mechanism 200 according to an embodiment of the present utility model is applied to an electric vehicle, and includes: the support 210, the hook 221, the elastic member 230, and the elastic pressing column 222.

The bracket 210 is used for being fixed on a vehicle longitudinal beam inner plate 110 of an electric vehicle, the hook 221 is rotationally connected with the bracket 210, the hook 221 is also connected with the bracket 210 through an elastic piece 230, and the elastic compression column 222 is arranged on the bracket 210.

The power battery 300 of the electric vehicle has a support portion 310, and the elastic member 230 applies an elastic force toward the support portion 310 to the hanger 221 so that the hanger 221 and the elastic pressing post 222 form a clamping portion 220 for commonly clamping the support portion 310.

When the power battery 300 is mounted, the power battery 300 moves in the Z direction of fig. 2, the supporting portion 310 contacts the hooks 221, the supporting portion 310 pushes the hooks 221 outward, the elastic member 230 is compressed, and the mounting is completed after the supporting portion 310 completely enters the clamping portion 220.

When the power battery 300 is detached, the power battery 300 is moved along the Z direction in fig. 2, the supporting part 310 presses the elastic pressing column 222, the hook 221 rotates towards the direction close to the supporting part 310 relative to the support 210 under the elastic force of the elastic piece 230, and after the hook 221 is separated from the lower plane 311 of the supporting part, the power battery 300 is moved along the opposite direction of the Z direction in fig. 2, so that the detachment is completed.

According to the battery locking mechanism 200 provided by the embodiment of the utility model, a bolt is not required to be fastened when the power battery 300 is replaced, so that the time for screwing the bolt can be saved. The power battery 300 can be replaced only by moving up and down, namely, the electric vehicle is not required to be arranged at a high station for disassembly and assembly, and the electric vehicle can be operated only by being stationary on any horizontal field, so that the environment inclusion required for replacing the power battery 300 is improved. The space utilization rate and the power conversion efficiency of the power conversion station are improved, and the power conversion cost is reduced, so that the popularity of the power conversion station is improved.

In addition, the battery locking mechanism 200 of the embodiment of the utility model has the advantages of less parts, simple structure and high structural strength, and is beneficial to improving the locking stability of the power battery 300, thereby improving the service performance and the driving safety of the electric vehicle.

In some implementations, referring to fig. 2, the hanger 221 of the embodiment of the present utility model has an adjacent abutment surface 2211 and a guide surface 2212, the abutment surface 2211 being used to support the support 310.

The guiding surface 2212 is an inclined surface, the guiding surface 2212 is used for guiding the supporting portion 310 into the clamping portion 220, when the supporting portion 310 enters the clamping portion 220 from the guiding surface 2212, the hook 221 rotates relative to the support 210, and the elastic member 230 compresses to enable the hook 221 to be far away from the supporting portion 310.

Specifically, the guiding surface 2212 may be a smooth inclined surface, and after the supporting portion 310 contacts with the guiding surface 2212, the smooth guiding surface 2212 can reduce the resistance of the supporting portion 310 moving along the Z direction in fig. 2, which is beneficial to more quickly completing the replacement of the power battery 300.

In particular implementations, the support 310 has opposite lower and upper planar surfaces 311, 312. When the power battery 300 is mounted, the power battery 300 is moved in the Z direction of fig. 2 using the lifting tray, the supporting portion 310 is in contact with the hanger 221, the supporting portion 310 pushes the hanger 221 in the opposite direction to the X direction of fig. 2, the hanger 221 is opened outward, and the elastic member 230 is driven to compress. Until the supporting portion 310 enters the holding portion 220, at this time, the lower flat surface 311 abuts against the hook 221, and the upper flat surface 312 contacts the elastic pressing post 222.

After the supporting portion 310 of the power battery 300 enters the clamping portion 220, the hanger 221 is subjected to the pressure applied by the supporting portion 310, and forms moment balance with the elastic force applied by the elastic member 230 to the supporting portion 310 and the friction force between the lower flat surface 311 of the supporting portion and the hanger abutting surface 2211, so that the hanger 221 is not rotated relative to the support 210, and the power battery 300 is mounted.

When the power battery 300 is detached, the lifting tray moves the power battery 300 along the Z direction in fig. 2, the supporting portion 310 presses the elastic pressing post 222, and the elastic member 230 applies elastic force to the hook 221, so that the hook 221 rotates relative to the support 210 in the direction indicated by the arrow in fig. 2. As the power battery 300 continues to move along the Z direction in fig. 2, after the support lower plane 311 is completely separated from the hook contact surface 2211, the lifting tray moves along the opposite direction of the Z direction in fig. 2, so as to complete the detachment.

Therefore, when the power battery 300 is assembled and disassembled, the power battery 300 can be locked by the interaction force between the supporting part 310 and the elastic pressing column 222 by pushing the power battery 300 and by means of the interaction force between the supporting part 310 and the hook 221, and the operation is simple and the use is convenient.

In some implementations, referring to fig. 2, the abutment surface 2211 of the hanger 221 is a roughened surface.

After the power battery 300 is locked, due to the large weight of the power battery 300, under the conditions of road bump or emergency brake and the like during the running of the vehicle, the supporting portion 310 and the hook 221 may have a tendency to slide relatively, the contact surface 2211 between the lower plane 311 of the supporting portion 310 and the hook 221 generates static friction force, the hook 221 receives friction force along the X direction in fig. 2, the elasticity of the elastic member 230 towards the supporting portion 310, the gravity of the power battery 300 and the pressure of the elastic pressing column 222 form moment balance relative to the rotating shaft 211, and the hook 221 remains stationary.

The greater the self weight of the power battery 300, the greater the pressure applied by the support portion 310 to the hanger 221, and the greater the maximum static friction force between the support portion lower plane 311 and the hanger abutment surface 2211. Therefore, the hanger 221 can always keep the moment balance, so that the possibility of sliding of the power battery 300 and the hanger 221 is effectively reduced, and the stability of the connection of the power battery 300 and the vehicle body is improved.

In some possible implementations, referring to fig. 1 and 2, the battery locking mechanism 200 of the embodiment of the present utility model further includes a rotation shaft 211, and the support 210 has two lugs 212, and an end of the hook 221 facing away from the guiding surface 2212 is inserted between the two lugs 212.

The rotation shaft 211 is interposed on the ear bases 212 and a portion of the hook 221 between the two ear bases 212 to rotate the hook 221 with respect to the ear bases 212.

Specifically, the two ear seats 212 may include a first ear seat 2121 and a second ear seat 2122, and the rotation shaft 211 sequentially passes through the first ear seat 2121, the hook 221 and the second ear seat 2122 to rotationally connect the hook 221 and the support 210 together. The support 210 is rotatably connected with the hook 221 through the rotation shaft 211, and has a simple structure and low cost.

In some implementations, referring to fig. 2, the hook 221 has a mounting arm 2213 on a side adjacent to the guide surface 2212, one end of the elastic member 230 is connected to the mounting arm 2213, and the other end of the elastic member 230 is connected to the support 210.

In the present utility model, the mounting arm 2213 provides a mounting space for the connection of the elastic member 230 and the hook 221, thereby facilitating the connection of the elastic member 230 and the hook 221, enhancing the stability of the connection, avoiding the damage of the elastic member 230 caused by excessively pressing the elastic member 230 when the hook 221 rotates in the direction indicated by the arrow shown in fig. 2, being beneficial to maintaining the performance of the battery locking mechanism 200 and improving the service life.

In a specific implementation, the elastic member 230 is fixedly connected to the mounting arm 2213 and the elastic member 230 is fixedly connected to the support 210 by rivets or other fasteners, so as to ensure that the elastic force of the elastic member 230 can be fully applied to the mounting arm 2213. Through the cooperation of the elastic piece 230 and the mounting arm 2213, the automatic homing of the hook 221 can be realized, and the operation is more convenient.

In some implementations, referring to fig. 2, the elastic member 230 and the elastic pressing post 222 are respectively located at opposite sides of the hook 221, and the elastic pressing post 222 is located between the two ear seats 212.

When the supporting portion 310 enters the locking portion 220, the elastic member 230 and the elastic pressing column 222 are both pressed, the elastic member 230 applies elastic force to the hook 221, the elastic pressing column 222 applies elastic force to the supporting portion 310, and the supporting portion 310 applies corresponding pressure to the hook 221. Because the elastic member 230 and the elastic pressing post 222 are located at two opposite sides of the hook 221, the directions of the moment applied to the hook 221 relative to the rotation shaft 211 are opposite, so that the hook 221 can keep moment balance, and cannot rotate relative to the support 210, which is beneficial to improving the locking strength of the battery locking mechanism 200 and enhancing the locking stability of the power battery 300.

Specifically, when the battery locking mechanism 200 is not in use, that is, when the elastic pressing post 222 and the elastic member 230 are not elastically deformed, the distance between the hook 221 and the elastic pressing post 222 should be adjusted to be smaller than the thickness of the supporting portion 310, so that after the supporting portion 310 enters the clamping portion 220, the clamping portion 220 can fully clamp the supporting portion 310, and meanwhile, when an error occurs in the size and thickness of the supporting portion 310, the stability of locking the power battery 300 can still be ensured, which is beneficial to improving the compatibility of the battery locking mechanism 200.

In some implementations, referring to fig. 3, the hook 221 is fixedly connected to the rotation shaft 211, one end of the elastic member 230 is connected to the rotation shaft 211, and the other end of the elastic member 230 is connected to the support 210.

Specifically, the elastic member 230 is disposed between the two ear seats 212, and when the hook 221 rotates relative to the support 210 in the direction indicated by the arrow in fig. 3, the rotation shaft 211 rotates along with the rotation shaft, so that the elastic member 230 is elastically deformed by the rotation of the rotation shaft 211, and the rotation shaft 211 receives a moment opposite to the direction indicated by the arrow in fig. 3, rotates in the direction opposite to the direction indicated by the arrow in fig. 3, and drives the hook 221 to rotate.

The elastic piece 230 is arranged between the two ear seats 212, so that the occupied space is small, the elastic piece 230 is not exposed, the elastic piece 230 is protected from being damaged, and the damage rate of the battery locking mechanism 200 is reduced. The hook 221 has a simple shape, is more convenient to process and manufacture, and is beneficial to reducing the cost for installing the battery locking mechanism 200.

In some implementations, referring to fig. 1-3, an electric vehicle includes a vehicle rail 100, a power battery 300, and a battery locking mechanism 200.

The power battery 300 is connected to the vehicle side member 100 through the battery lock mechanism 200.

The structure and the operation of the battery locking mechanism 200 are described in detail in the above embodiments, and are not described here again.

In a specific implementation, the power battery support portion 310 may be integrally provided with the power battery 300, and the support portion 310 is replaced when the power battery 300 is replaced.

A container for placing the power battery 300 may also be provided, and a support portion 310 may be provided on the container. When the power battery 300 is replaced, the container is removed together with the power battery 300, the power battery 300 is removed from the container, and after the replacement of the new power battery 300, the replaced power battery 300 is locked to the electric vehicle together with the container.

In the present utility model, the battery lock mechanism 200 is assembled to the vehicle side rail inner panel 110 without wasting the conventional storage space in the vehicle. Because the power battery 300 has large self weight, and is arranged at the bottom of the electric vehicle, the gravity center of the chassis of the electric vehicle can be lowered, and the high-speed stability of the electric vehicle can be improved. In addition, damage to the power battery 300 when the electric vehicle is involved in a collision can be effectively reduced.

In some implementations, referring to fig. 4, battery locking mechanism 200 is spaced around the perimeter of power battery 300.

The power battery 300 has a plurality of support portions 310, and the support portions 310 are provided in one-to-one correspondence with the battery locking mechanism 200.

In a specific implementation, the battery locking mechanism 200 is required to not only lock the power battery 300, but also support the power battery 300, and the power battery 300 has a large self weight, so that a plurality of battery locking mechanisms 200 are required to be installed on the vehicle longitudinal beam inner plate 110 of each electric vehicle, and stability of locking is enhanced.

Each side of the power battery 300 is required to be provided with more than two battery locking mechanisms 200, when the electric vehicle is in accident such as collision, even if a small part of the battery locking mechanisms 200 are damaged, the basic stability of the power battery 300 can be ensured, the power battery is prevented from falling off due to the damage of the battery locking mechanism 200 on one side, and the running stability of the electric vehicle is improved.

In some implementations, referring to FIG. 1, the vehicle rail 100 is fixedly coupled to the bracket 210.

Specifically, the bracket 210 is fixedly coupled to the vehicle rail inner panel 110 by fasteners such as bolts, rivets, or the like. Welded nuts may be pre-embedded in the electric vehicle rail inner panel 110, and a section of hole with a matching mounting bolt may be extended from the bracket 210, and the battery locking mechanism 200 may be fixedly connected to the vehicle rail inner panel 110 by the bolt.

When the power battery 300 is installed or disassembled, the support 210 is kept stationary, the power battery 300 is lifted by the lifting tray, and the power battery 300 can be assembled or disassembled by the interaction force between the power battery 300 and the battery locking mechanism 200. The support 210 is fixedly connected with the vehicle longitudinal beam 100, so that the locking stability of the power battery 300 can be improved. The battery locking mechanism 200 does not need to be disassembled under the condition of no damage, so that the convenience of use is improved.

In describing embodiments of the present utility model, it should be noted that, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "coupled" should be construed broadly, and may be, for example, fixedly coupled, indirectly coupled through an intermediary, in communication between two elements, or in an interaction relationship between two elements. The specific meaning of the above terms in the embodiments of the present utility model will be understood by those of ordinary skill in the art according to specific circumstances.

The embodiments of the utility model may be implemented or realized in any number of ways, including as a matter of course, such that the apparatus or elements recited in the claims are not necessarily oriented or configured to operate in any particular manner. In the description of the embodiments of the present utility model, the meaning of "a plurality" is two or more unless specifically stated otherwise.

The terms first, second, third, fourth and the like in the description and in the claims and in the above-described figures, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented, for example, in sequences other than those illustrated or otherwise described herein.

Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

The term "plurality" herein refers to two or more. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship; in the formula, the character "/" indicates that the front and rear associated objects are a "division" relationship.

It will be appreciated that the various numerical numbers referred to in the embodiments of the present utility model are merely for ease of description and are not intended to limit the scope of the embodiments of the present utility model.

It should be understood that, in the embodiment of the present utility model, the sequence number of each process does not mean that the execution sequence of each process should be determined by the function and the internal logic, and should not limit the implementation process of the embodiment of the present utility model.

Other embodiments of the utility model will be apparent to those skilled in the art from consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of the utility model following, in general, the principles of the utility model and including such departures from the present disclosure as come within known or customary practice within the art to which the utility model pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the utility model being indicated by the following claims.

It is to be understood that the utility model is not limited to the precise arrangements and instrumentalities shown in the drawings, which have been described above, and that various modifications and changes may be effected without departing from the scope thereof. The scope of the utility model is limited only by the appended claims.

Claims (10)

1. A battery lock mechanism applied to an electric vehicle, comprising: the device comprises a support, a hook, an elastic piece and an elastic pressing column;

the support is used for being fixed on a vehicle longitudinal beam inner plate of the electric vehicle, the hook is rotationally connected with the support, the hook is connected with the support through the elastic piece, and the elastic compression column is arranged on the support;

the power battery of the electric vehicle has a support portion, and the elastic member applies an elastic force toward the support portion to the hanger so that the hanger and the elastic pressing post form a clamping portion for commonly clamping the support portion.

2. The battery locking mechanism of claim 1, wherein the hook has adjacent abutment and guide surfaces, the abutment surface for supporting the support;

the guide surface is an inclined surface and is used for providing guidance for the supporting part to enter the clamping part, and when the supporting part enters the clamping part from the guide surface, the hook rotates relative to the support, and the elastic piece compresses to enable the hook to be far away from the supporting part.

3. The battery locking mechanism of claim 2, wherein the abutment surface is a roughened surface.

4. A battery locking mechanism as claimed in claim 2 or claim 3, further comprising a rotating shaft, the support having two lugs thereon, the end of the hook facing away from the guide surface being interposed between the two lugs;

the rotating shaft is inserted on the lug seat and part of the hooks between the lug seats so as to enable the hooks to rotate relative to the lug seats.

5. The battery locking mechanism of claim 4, wherein the hook has a mounting arm on a side thereof adjacent to the guide surface, one end of the elastic member is connected to the mounting arm, and the other end of the elastic member is connected to the support.

6. The battery locking mechanism of claim 5 wherein said resilient member and said resilient compression post are located on opposite sides of said hanger, respectively, said resilient compression post being located between two of said lugs.

7. The battery locking mechanism of claim 4, wherein the hook is fixedly connected with the rotating shaft, one end of the elastic member is connected with the rotating shaft, and the other end of the elastic member is connected with the support.

8. An electric vehicle comprising a vehicle rail, a power battery, and a plurality of battery locking mechanisms of any one of claims 1 to 7;

the power battery is connected with the vehicle longitudinal beam through the battery locking mechanism.

9. The electric vehicle of claim 8, characterized in that the battery locking mechanism is disposed at intervals around a peripheral side of the power battery;

the power battery is provided with a plurality of supporting parts, and the supporting parts are arranged in one-to-one correspondence with the battery locking mechanisms.

10. The electric vehicle of claim 8, characterized in that the vehicle longitudinal beam is fixedly connected with the seat of the battery locking mechanism.