CN215096981U - Battery box locking and unlocking device and electric automobile with same - Google Patents

Abstract

The utility model discloses a battery box locking and unlocking device and electric automobile who has it. This battery box locking and unlocking device includes: the battery bracket is provided with a roller; the battery box is arranged on the roller and provided with a lock seat; the locking mechanism, the latch mechanism sets up on battery tray, and the latch mechanism includes the tapered end, and the tapered end has with lock seat locking complex locking state and with the unblock state of lock seat separation, and the tapered end realizes with the pivoted mode that the switching between locking state and unblock state, and when the tapered end was in the unblock state, the battery box can be followed the gyro wheel and removed for battery tray. According to the utility model discloses battery box locking and unlocking device, the tapered end of latch mechanism realizes changing between locking state and unlocking state with the pivoted mode to lock and unblock are carried out to the lock seat on the battery box, rotate the tapered end and be convenient for operate, and the reliability is higher, thereby is favorable to promoting the efficiency of changing the battery box on the battery bracket.

Description

Battery box locking and unlocking device and electric automobile with same

Technical Field

The utility model relates to an automotive filed particularly, relates to a battery box locking and unlocking device and electric automobile who has it.

Background

At present, electric automobile is less to environmental impact traditional car relatively, and its prospect is widely seen, but electric automobile has the long shortcoming of charge time, seriously influences user experience, and in the correlation technique, the mode of battery package is changed to the accessible trades the electric automobile, but the vehicle structure of fixed battery package is comparatively complicated, leads to trading electric efficiency lower, is not convenient for trade the electricity operation.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the above-mentioned technical problem among the prior art to a certain extent at least. Therefore, the utility model provides a battery box locking and unlocking device can promote the efficiency of changing the battery box on the battery bracket.

The utility model also provides an electric automobile with above-mentioned battery box locking and unlocking device.

According to the utility model discloses battery box locking and unlocking device includes: the battery bracket is provided with a roller; the battery box is arranged on the roller and provided with a lock seat; the latch mechanism, the latch mechanism sets up on the battery tray, the latch mechanism includes the tapered end, the tapered end have with lock seat locking complex locking state and with the unblock state of lock seat separation, just the tapered end is realized with the pivoted mode the locking state with change between the unblock state the tapered end is in during the unblock state, the battery box can be followed the gyro wheel for the battery tray removes.

According to the utility model discloses battery box locking and unlocking device, the tapered end of latch mechanism realizes switching between locking state and unlocking state with the pivoted mode, carry out locking and unblock with the lock seat to on the battery box, it is convenient for operate to rotate the tapered end, and the reliability is higher, and the setting of gyro wheel can be convenient for the installation and the dismantlement of battery box on battery bracket, thereby be favorable to promoting the efficiency of the battery box of changing on the battery bracket, can also guarantee the tapered end to the fixed effect of battery box when locking state, promote the reliability of latch mechanism.

According to some embodiments of the utility model, battery box locking and unlocking device still includes: an executive component disposed on the battery bracket, the executive component comprising: the power transmission piece is provided with a driving part, the lock is arranged on the lock connecting piece, and the power transmission piece is used for driving the lock connecting piece to move so that the lock can be switched between a locking state and an unlocking state.

Further, the cylinder head connector includes: the lock comprises a lock handle and a lock connecting rod, wherein the lock head is fixedly arranged on the lock connecting rod, the lock handle is suitable for being fixedly connected with the lock connecting rod, the power transmission piece is used for driving the lock handle to move, and the lock handle drives the lock connecting rod to rotate during movement.

Furthermore, the lock seats are multiple, the lock heads correspond to the lock seats one to one, at least two lock heads are fixedly arranged on the same lock connecting rod, and each lock connecting rod is connected with the lock handle.

Further, the execution component further comprises: a connecting rod, the power transmission member includes: the driving rod is used for driving the driving arm to reciprocate, the driving arm is in pivot connection with the connecting rod, and the lock handle is in pivot connection with the connecting rod.

Further, the drive lever includes: the battery bracket comprises a lead screw and a nut, wherein the lead screw is rotatably arranged on the battery bracket, the nut is in threaded connection with the lead screw to move along the lead screw in a reciprocating mode, and the nut is connected with the driving arm.

Furthermore, the connecting rod is connected with a plurality of lock handles, and the lock handles drive the corresponding lock connecting rods to rotate.

According to some embodiments of the invention, the lock seat comprises: the lock comprises a lock seat support, a first lock tongue edge and a second lock tongue edge, wherein the first lock tongue edge is connected with the lock seat support, the second lock tongue edge is connected with the first lock tongue edge and is separated from the lock seat support, so that a lock groove is formed between the second lock tongue edge and the lock seat support, and in the lock state, the lock head is at least partially positioned in the lock groove; and when the lock is in the unlocking state, the lock head is withdrawn from the locking groove.

According to some embodiments of the utility model, the lock seat sets up the first end of battery box, the second end of battery box is provided with the latch hook, be provided with the locked groove on the battery tray, the latch hook be suitable for with the cooperation of pegging graft of locked groove, first end with the second end is relative both ends.

Furthermore, after the lock hook is in inserting fit with the lock groove, the lock head and the lock seat are locked.

According to some embodiments of the present invention, the roller is provided in a plurality of rows, each row the roller includes a plurality of roller bodies, and the mounting axis direction of the roller bodies is perpendicular to the moving direction of the battery box.

According to the utility model discloses another aspect embodiment's electric automobile, including foretell battery box locking and unlocking device, battery bracket fixes on electric automobile's the frame. .

Compared with the prior art, the advantages of the electric automobile and the battery box locking and unlocking device are the same, and are not described again.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

FIG. 1 is a schematic view of a battery box locking and unlocking device when a lock is in a locked state;

FIG. 2 is a schematic view of the battery box locking and unlocking device when the lock is in an unlocked state;

FIG. 3 is a schematic view of the lock head and the lock base when the lock head is in a locked state;

FIG. 4 is a schematic view of the lock head and the lock base when the lock head is in an unlocked state;

FIG. 5 is a schematic view of a lock mechanism and actuator assembly;

fig. 6 is a schematic view of a battery box and a battery tray.

Reference numerals:

the locking device comprises an actuating assembly 10, a lock head 1, a first locking plate 11, a second locking plate 12, a connecting part 13, a driving rod 2, a lead screw 21, a handle 211, a nut 22, a lock handle 3, a lock connecting rod 4, a pipe clamp 41, a driving arm 5, a connecting rod 6, a battery box 20, a lock base 201, a first bolt edge 2011, a second bolt edge 2012, a third bolt edge 2013, a lock base support 2014, a lock hook 202, a battery bracket 30, a lock groove 301, a roller 302, a roller body 3021, a power transmission piece 40 and a lock head connecting piece 50.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "clockwise", "counterclockwise", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

The following describes in detail a battery box locking and unlocking device and an electric vehicle having the same according to an embodiment of the present invention with reference to the accompanying drawings.

Referring to fig. 1-6, battery box locking and unlocking device according to the embodiment of the present invention includes: battery carrier 30, battery box 20, latch mechanism, be provided with gyro wheel 302 on the battery carrier 30, battery box 20 sets up on gyro wheel 302, and be provided with lock seat 201 on the battery box 20, latch mechanism sets up on battery carrier 30, latch mechanism includes tapered end 1, tapered end 1 have with lock seat 201 locking complex locking state and with the unblock state of lock seat 201 separation, tapered end 1 is when coordinating with lock seat 201 locking, lock seat 201 is fixed spacing by tapered end 1, thereby realize battery box 20 and battery carrier 30 fixed, when tapered end 1 separates with lock seat 201, tapered end 1 no longer carries on spacingly to lock seat 201, battery box 20 can take out from battery carrier 30.

Tapered end 1 realizes switching between locking state and unblock state with the pivoted mode to be favorable to tapered end 1 in the operation of switching between locking state and unblock state, and then be favorable to changing the operation of battery box 20 on battery tray 30, in addition, battery box locking and unlocking device are when receiving external shock and vibration, tapered end 1 is difficult to take place to rotate, thereby is favorable to guaranteeing the reliability of locking state, avoids tapered end 1 to appear the problem of inefficacy to the locking of lock seat 201.

It should be noted that, when the lock head 1 is in the unlocked state, the battery box 20 can move along the roller 302 relative to the battery bracket 30, and when the lock head 1 is in the locked state, the battery box 20 is fixed to the battery bracket 30, and the roller 302 is disposed to facilitate the movement of the battery box 20 on the battery bracket, thereby facilitating the improvement of the efficiency of replacing the battery box 20 on the battery bracket 30.

Referring to fig. 1 and 2, the locked state may be converted into the unlocked state by driving the locking head 1 to rotate counterclockwise (in a direction opposite to an arrow a in fig. 2), and the unlocked state may be converted into the locked state by driving the locking head 1 to rotate clockwise (in a direction of an arrow a in fig. 2).

According to the utility model discloses battery box locking and unlocking device, the tapered end 1 of latch mechanism realizes switching between locking state and unlocking state with the pivoted mode, carry out locking and unblock with lock seat 201 to on the battery box 20, it is convenient for operate to rotate tapered end 1, and the reliability is higher, and the setting of gyro wheel 302 can be convenient for battery box 20 installation and dismantlement on the battery bracket, thereby be favorable to promoting the efficiency of changing battery box 20 on the battery bracket 30, can also guarantee tapered end 1 fixed effect to battery box 20 when the locking state, promote the reliability of latch mechanism.

Referring to fig. 1 and 2, the battery box locking and unlocking apparatus further includes: the executive component 10, the executive component 10 is arranged on the battery bracket 30, the executive component 10 includes: power transmission member 40 and tapered end connecting piece 50, power transmission member 40 has the drive division to in order to act on the drive division through external drive power, realize the motion of power transmission member 40, the drive division can set up in the below of battery bracket 30, in order to prevent that external impact and vibration from influencing the drive division, the drive division can be handle 211. The lock cylinder 1 is arranged on the lock cylinder connecting piece 50, and the power transmission piece 40 is used for driving the lock cylinder connecting piece 50 to move, so that the lock cylinder 1 can be switched between a locking state and an unlocking state, in other words, the lock cylinder 1 can be driven by the execution assembly 10 to be switched between the locking state and the unlocking state,

referring to fig. 1, 2 and 5, the cylinder head connector 50 includes: the lock comprises a lock handle 3 and a lock connecting rod 4, wherein the lock head 1 is fixedly arranged on the lock connecting rod 4, the lock handle 3 is suitable for being fixedly connected with the lock connecting rod 4, a power transmission piece 40 is used for driving the lock handle 3 to move, and the lock handle 3 drives the lock connecting rod 4 to rotate when moving. Specifically, the lock link 4 is rotatably fixed on the side wall of one side of the battery bracket 30 through the pipe clamp 41, the lock head 1 and the lock link 4 rotate synchronously, the first end of the lock handle 3 is fixedly connected with the lock link 4, the second end of the lock handle 3 is driven by the power transmission member 40, and when the power transmission member 40 drives the second end of the lock handle 3 to move rightwards, the lock link 4 is driven by the lock handle 3 to rotate anticlockwise (in the opposite direction shown by the arrow a in fig. 2), so that the lock head 1 is converted from the locking state to the unlocking state. When the power transmission member 40 drives the second end of the lock handle 3 to move leftward, the lock link 4 is driven by the lock handle 3 to rotate clockwise (in the direction of arrow a in fig. 2), so that the lock cylinder 1 is switched from the unlocked state to the locked state. The lock handle 3 has a certain length, and the lock handle 3 can increase the force arm for driving the lock head 1 to rotate, thereby being beneficial to reducing the driving force of the power transmission piece 40 when the lock head 1 is rotated, and being convenient for the operation of switching the lock head 1 between the locking state and the unlocking state.

Referring to fig. 1, 2 and 5, the lock holders 201 are multiple, the lock heads 1 correspond to the lock holders 201 one to one, and the lock holders 201 and the lock heads 1 corresponding to one can improve the fixing effect of the lock mechanism on the battery box 20, so as to prevent the battery box 20 from shaking on the battery bracket 30. At least two tapered ends 1 are fixed to be set up on same lock connecting rod 4, and preferably, the both ends of same lock connecting rod 4 all are provided with a tapered end 1 to when guaranteeing every tapered end 1 and the locking cooperation of lock seat 201, the both ends atress of lock connecting rod 4 is balanced. The lock mechanism may include a plurality of lock links 4, for example, two, to secure a fixing effect to the battery box 20, and a lock handle 3 is connected to each lock link 4 to increase a moment arm for driving each lock link 4 to rotate, thereby facilitating an operation of switching between the locked state and the unlocked state of the lock head 1.

Referring to fig. 1, 2 and 5, the actuating assembly 10 further comprises: the connecting rod 6, the power transmission member 40 includes: the locking mechanism comprises a driving rod 2 and a driving arm 5, wherein the driving rod 2 is used for driving the driving arm 5 to reciprocate, the driving arm 5 is in pivot connection with a connecting rod 6, a lock handle 3 is in pivot connection with the connecting rod 6, the reciprocating movement of the driving arm 5 can drive the lock handle 3 and a lock connecting rod 4 to rotate in a reciprocating mode, and therefore the locking head 1 can be switched between a locking state and an unlocking state.

Referring to fig. 1, 2 and 5, the drive lever 2 includes: the lead screw 21 and the nut 22, the lead screw 21 is rotatably arranged on the battery bracket 30, the nut 22 is screwed with the lead screw 21 to reciprocate along the lead screw 21, the nut 22 is connected with the driving arm 5, the nut 22 can be pivotally connected with the connecting rod 6 through the driving arm 5, and the lock handle 3 is pivotally connected with the connecting rod 6.

Specifically, one end of the screw 21 has a driving portion, which may be a handle 211, and by rotating the handle 211 in different directions, the nut 22 can move left and right along the screw 21, for example, by rotating the handle 211 counterclockwise (in the opposite direction shown by the arrow b in fig. 5), the nut 22 moves right along the screw 21, and by rotating the handle 211 clockwise (in the direction shown by the arrow b in fig. 5), the nut 22 moves left along the screw 21.

When the nut 22 moves rightwards along the screw 21, the nut 22 pushes the driving arm 5 to move rightwards, the driving arm 5 pushes the connecting rod 6 to move rightwards, the connecting rod 6 pushes the second end of the lock handle 3 to move rightwards, and the lock connecting rod 4 is driven by the lock handle 3 to rotate anticlockwise (in the opposite direction shown by an arrow a in fig. 2), so that the lock head 1 is switched from the locking state to the unlocking state.

When the nut 22 moves leftwards along the screw 21, the nut 22 pulls the driving arm 5 to move leftwards, the driving arm 5 pulls the connecting rod 6 to move leftwards, the connecting rod 6 pulls the second end of the lock handle 3 to move leftwards, and the lock connecting rod 4 is driven by the lock handle 3 to rotate clockwise (as shown by an arrow a in fig. 2), so that the lock head 1 is converted from the unlocking state to the locking state.

Referring to fig. 5, the connecting rod 6 connects a plurality of lock handles 3, for example, 2 lock handles 3, and the lock handles 3 drive the corresponding lock links 4 to rotate, so as to achieve synchronous movement of each lock handle 3, and to achieve synchronous rotation of a plurality of lock heads 1 on each lock link 4 during state transition.

Referring to fig. 3 and 4, the latch holder 201 includes: the lock holder support 2014, the first bolt edge 2011 and the second bolt edge 2012 can penetrate through the lock holder support 2014 through fasteners so as to fix the lock holder support 2014 and the battery box 20, the first bolt edge 2011 is connected with the lock holder support 2014, the second bolt edge 2012 is connected with the first bolt edge 2011 and separated from the lock holder support 2014, the second bolt edge 2012 is arranged opposite to the lock holder support 2014 so as to form a locking groove between the second bolt edge 2012 and the lock holder support 2014, and in a locking state, the tapered end 1 is at least partially positioned in the locking groove; when the lock is in an unlocked state, the lock head 1 is withdrawn from the locking groove.

Referring to fig. 3 and 4, the lock housing 201 further includes: third spring bolt limit 2013, third spring bolt limit 2013 is connected with lock seat support 2014, and third spring bolt limit 2013 sets up with first spring bolt limit 2011 relatively, and tapered end 1 is "H" type, and tapered end 1 includes first jam plate 11, second jam plate 12 and connects connecting portion 13 of first jam plate 11 and second jam plate 12, and connecting portion 13 is suitable for passing in and out the locking groove through the pivoted mode. When tapered end 1 and lock seat 201 locking cooperation, tapered end 1 is in the locking state, connecting portion 13 is located the locking inslot, and connecting portion 13 simultaneously with first spring bolt limit 2011, second spring bolt limit 2012, the laminating of third spring bolt limit 2013, at this moment, first locking plate 11 and second locking plate 12 carry on spacingly to lock seat 201 in front and back direction, connecting portion 13 carries on spacingly to lock seat 201 in left and right directions and upper and lower direction, that is to say, when tapered end 1 and lock seat 201 locking cooperation, can realize battery box 20 and battery tray 30 fixed.

Referring to fig. 1 and 2, the lock seat 201 is disposed at a first end of the battery box 20, the second end of the battery box 20 is provided with the lock hook 202, the battery bracket 30 is provided with the lock slot 301, the lock hook 202 is suitable for being in plug-in fit with the lock slot 301, and the first end and the second end are opposite ends to fix the two ends of the battery box 20, so as to facilitate improving the stability of the battery box 20 on the battery bracket 30.

Referring to fig. 1 and 2, after the locking hook 202 is in insertion fit with the locking groove 301, the locking head 1 is locked with the lock base 201, and when the locking hook 202 is in insertion fit with the locking groove 301, the locking head 1 is aligned with the lock base 201, so that locking fit of the locking head 1 and the lock base 201 is facilitated.

Referring to fig. 6, the rollers 302 are arranged in multiple rows, each row of rollers includes a plurality of roller bodies 3021 to increase the contact area between the roller 302 and the battery box 20, so as to facilitate the movement of the battery box 20, and the mounting axis direction of the roller bodies is perpendicular to the movement direction of the battery box 20, so as to ensure that the rolling direction of the roller bodies 3021 is consistent with the movement direction of the battery box 20, thereby facilitating the mounting and dismounting of the battery box 20 on the battery bracket.

According to the utility model discloses on the other hand embodiment's electric automobile, battery box locking and unlocking device including above-mentioned embodiment, battery bracket 30 is fixed on electric automobile's frame, in order to promote the efficiency of changing electric automobile battery box, battery box locking and unlocking device have simple structure, the processing technology degree of difficulty is little, advantages such as good reliability, can realize quick replacement electric automobile's battery box through battery box locking and unlocking device, the battery box includes the battery package, be electric automobile's main power source, in order to make electric automobile replenish the electric energy fast through changing the battery box, electric automobile's market competition is strengthened.

In some embodiments, the process of replacing the battery box of the electric vehicle is as follows:

firstly, the battery replacing device is in butt joint with the electric automobile, the handle positioned at the bottom of the battery bracket is grabbed by the unlocking device of the battery replacing device to move along the Y axis, the driving rod is driven to rotate, and the lock head 1 is converted from the locking state to the unlocking state. The battery replacement device then pulls the low-powered battery compartment out of the battery tray 30, pushing the full battery compartment into the battery tray 30. Finally, the unlocking device drives the driving rod to rotate reversely, so that the lock head 1 is converted into a locking state from an unlocking state.

Additionally, the utility model discloses battery box locking and unlocking device, it is applicable in electronic commodity circulation car to be favorable to promoting the operating efficiency of electronic commodity circulation car, improve the charging environment of battery box, promote the life of battery box.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like are intended to mean 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 invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer 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. Furthermore, various embodiments or examples described in this specification can be combined and combined by those skilled in the art.

Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.

Claims (12)

1. A battery box locking and unlocking device, comprising:

the battery bracket (30), the battery bracket (30) is provided with a roller (302);

the battery box (20), the battery box (20) is arranged on the roller (302), and the battery box (20) is provided with a lock seat (201);

the latch mechanism, the latch mechanism sets up on battery tray (30), the latch mechanism includes tapered end (1), tapered end (1) have with lock seat (201) locking complex locking state and with the unblock state of lock seat (201) separation, just tapered end (1) is realized with the pivoted mode locking state with change between the unblock state tapered end (1) is in during the unblock state, battery box (20) can be followed gyro wheel (302) for battery tray (30) remove.

2. The battery box locking and unlocking device according to claim 1, further comprising: an actuator assembly (10), the actuator assembly (10) disposed on the battery carrier (30), the actuator assembly (10) comprising: power transmission piece (40) and tapered end connecting piece (50), power transmission piece (40) have the drive division, tapered end (1) set up on tapered end connecting piece (50), just power transmission piece (40) are used for driving tapered end connecting piece (50) motion, so that tapered end (1) is in lock state with the switching between the unblock state.

3. The battery box locking and unlocking device according to claim 2, wherein said lock cylinder connecting member (50) includes: lock handle (3) and lock connecting rod (4), tapered end (1) is fixed to be set up on lock connecting rod (4), lock handle (3) be suitable for with lock connecting rod (4) fixed connection, power transmission piece (40) are used for the drive lock handle (3) motion, drive when lock handle (3) motion lock connecting rod (4) rotate.

4. The battery box locking and unlocking device according to claim 3, wherein the number of the lock holders (201) is multiple, the lock heads (1) correspond to the lock holders (201) one by one, at least two lock heads (1) are fixedly arranged on the same lock connecting rod (4), and each lock connecting rod (4) is connected with the lock handle (3).

5. The battery box locking and unlocking device according to claim 3, wherein said actuating assembly (10) further comprises: a connecting rod (6), the power transmission member (40) comprising: the lock comprises a driving rod (2) and a driving arm (5), wherein the driving rod (2) is used for driving the driving arm (5) to move in a reciprocating mode, the driving arm (5) is in pivot connection with a connecting rod (6), and a lock handle (3) is in pivot connection with the connecting rod (6).

6. The battery box locking and unlocking device according to claim 5, wherein the driving lever (2) includes: the battery bracket comprises a lead screw (21) and a nut (22), wherein the lead screw (21) is rotatably arranged on the battery bracket (30), the nut (22) is in threaded connection with the lead screw (21) to move in a reciprocating mode along the lead screw (21), and the nut (22) is connected with the driving arm (5).

7. The battery box locking and unlocking device according to claim 5, wherein said connecting rod (6) connects a plurality of said lock levers (3), said lock levers (3) driving the corresponding said lock links (4) to rotate.

8. The battery box locking and unlocking device according to claim 1, wherein the lock holder (201) includes: the lock comprises a lock seat support (2014), a first lock tongue edge (2011) and a second lock tongue edge (2012), wherein the first lock tongue edge (2011) is connected with the lock seat support (2014), the second lock tongue edge (2012) is connected with the first lock tongue edge (2011) and is separated from the lock seat support (2014) so as to form a locking groove between the second lock tongue edge (2012) and the lock seat support (2014), and in the locking state, the lock head (1) is at least partially positioned in the locking groove; and when the lock is in the unlocking state, the lock head (1) is withdrawn from the locking groove.

9. The battery box locking and unlocking device according to claim 1 or 8, wherein said lock seat (201) is disposed at a first end of said battery box (20), a second end of said battery box (20) is provided with a lock hook (202), said battery bracket (30) is provided with a lock slot (301), said lock hook (202) is adapted to be inserted into said lock slot (301), and said first end and said second end are opposite ends.

10. The battery box locking and unlocking device according to claim 9, wherein the locking head (1) is locked with the lock base (201) after the locking hook (202) is inserted into and matched with the lock groove (301).

11. The battery box locking and unlocking device according to claim 1, wherein the rollers (302) are arranged in a plurality of rows, each row of the rollers includes a plurality of roller bodies (3021), and the mounting axis direction of the roller bodies is perpendicular to the moving direction of the battery box (20).

12. An electric vehicle, characterized in that it comprises a battery box locking and unlocking device according to any one of claims 1 to 11, said battery bracket (30) being fixed to the frame of said electric vehicle.

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