WO2023045883A1

WO2023045883A1 - Locking device, tray assembly, electric vehicle, locking method for battery box, and unlocking method

Info

Publication number: WO2023045883A1
Application number: PCT/CN2022/119716
Authority: WO
Inventors: 张建平; 仇丹梁
Original assignee: 奥动新能源汽车科技有限公司; 上海电巴新能源科技有限公司
Priority date: 2021-09-22
Filing date: 2022-09-19
Publication date: 2023-03-30
Also published as: CN115303043A

Abstract

A locking device, a tray assembly (600), an electric vehicle, a locking method for a battery box (700), and an unlocking method. Locking mechanisms (100) are used for locking and fixing the battery box (700) onto an electric vehicle, each locking mechanism (100) comprises a lock seat (20) and a position-limiting part (30), an accommodating groove (21) extending downwards is provided on the upper side surface of the lock seat (20), and the accommodating groove (21) is used for accommodating a locking member (50) of the battery box (700); the position-limiting part (30) is provided on the lock seat (20), and at least part of the position-limiting part (30) can extend into the accommodating groove (21) to limit the locking member (50) located in the accommodating groove (21) from moving upwards and then leaving the accommodating groove (21). By providing the accommodating groove (21) and the position-limiting part (30) on the lock seat (20), the position-limiting part (30) can avoid upward movement of the locking member (50), thereby achieving relative fixing of the battery box (700), effectively achieving fixing of the battery box (700) in the vertical direction, and avoiding the problem of shaking of the battery box (700) relative to a battery tray in the vertical direction; in addition, the accommodating groove (21) limits the locking member (50) from shaking in the horizontal plane relative to the battery tray, thereby further improving the safety and stability of connection between the battery box (700) and the battery tray.

Description

Locking device, bracket assembly, electric vehicle, locking method and unlocking method of battery box

This application claims the priority of Chinese patent application 2021111080457 with a filing date of 2021/9/22. This application cites the full text of the above-mentioned Chinese patent application.

technical field

The invention relates to the field of electric vehicles, in particular to a locking device, a bracket assembly, an electric vehicle, and a locking method and an unlocking method for a battery box.

Background technique

The battery boxes of existing electric vehicles are generally divided into fixed type and replaceable type. Among them, the fixed type battery is generally fixed on the vehicle, and the vehicle is directly used as the charging object when charging. The replaceable battery box is generally fixed on the bracket of the vehicle by means of movable installation. The battery case can be removed for replacement or charging of the battery case alone. After the replaced battery box is fully charged, it is reinstalled on the vehicle.

The battery box in the prior art is locked and fixed with the battery bracket on the electric vehicle through the locking mechanism arranged on the side of the box body, but for a battery box with a larger size, when the battery box is installed on the electric vehicle, due to The surface of the battery box far away from the locking mechanism is not fixed to the battery bracket, which causes the battery box to easily shake in the vertical direction relative to the battery bracket during the driving of the electric vehicle, making it impossible to achieve a safe and stable connection between the battery box and the battery bracket. connect.

Contents of the invention

The technical problem to be solved by the present invention is to provide a locking device, a bracket assembly, an electric A locking method and an unlocking method of a car and a battery box.

The present invention solves the above technical problems through the following technical solutions:

A locking mechanism for locking and fixing a battery box on an electric vehicle, the locking mechanism includes a lock seat and a limiting part, the upper side of the lock seat is provided with a receiving groove extending downward, the The accommodating groove is used for accommodating the locking piece of the battery box; the limiting part is arranged on the lock seat, and the limiting part can at least partly extend into the accommodating groove to limit the The locking member in the receiving groove moves upwards away from the receiving groove.

In this solution, by setting the receiving groove and the limiting part on the lock seat, the limiting part can restrict the locking part entering the receiving groove, avoiding the upward movement of the locking part, thereby realizing the relative fixation of the battery box, which can effectively The vertical fixation of the battery box can be effectively realized, and the problem of shaking of the battery box relative to the battery bracket in the vertical direction can be avoided. At the same time, the accommodating groove limits the shaking of the locking member relative to the battery bracket in the horizontal plane, which can further improve the safety and stability of the connection between the battery box and the battery bracket.

Preferably, the accommodating groove extends vertically downward;

And/or, the bottom of the receiving groove has a containment surface, and the shape of the containment surface fits the outer surface of the locking member;

And/or, the bottom of the accommodating groove is an arc surface.

In this solution, the accommodating groove extends vertically downward to facilitate the smooth entry or exit of the locking member of the battery box. The containing surface can increase the contact area and improve the stability and reliability of the battery box locking. The arc surface structure has a large contact area with the locking piece, which is convenient for forming a stable support for the locking piece.

Preferably, the accommodating groove has two opposite sides, and the limiting part moves from one side of the accommodating groove to the other side of the accommodating groove, so as to be inserted into the accommodating groove.

In this solution, the limiting part can realize efficient locking or unlocking of the locking member by moving into or out of the receiving groove.

Preferably, the bottom surface of the limiting portion is provided with an abutment surface, and the abutment surface is used to abut against the locking piece located in the receiving groove, so as to limit the upward movement of the locking piece.

In this solution, through the mutual abutment between the abutting surface at the bottom of the limiting portion and the locking piece, the vertical shaking of the locking piece relative to the lock seat is further restricted.

Preferably, the abutting surface is a plane, and the abutting surface extends obliquely upward along the direction in which the limiting portion is inserted into the receiving groove;

And/or, the range of the included angle between the abutting surface and the horizontal plane is 5°-30°.

And/or, the length of the projection of the abutting surface on the horizontal plane is greater than the width of the receiving groove.

In this solution, when the limiting portion extends into the receiving groove, the obliquely upwardly extending abutment surface can gradually increase the pressure exerted on the locking member, and correspondingly, the reaction force on the limiting portion also gradually increases. Therefore, by setting the size of the reaction force, the degree of penetration of the limiting part can be determined, which can avoid the failure of the battery box to be locked due to insufficient penetration, and avoid damage to the locking mechanism caused by excessive penetration. The obliquely upwardly extending abutting surface can also increase the contact area and improve the reliability and stability of fixing the lock shaft.

Preferably, the end surface of the limiting portion facing the side of the receiving groove is an abutting surface, and the abutting surface is in contact with the corresponding side of the receiving groove.

In this solution, the above-mentioned abutting surface can reduce the gap between the limiting part and the receiving groove, and improve the stability of the limiting part relative to the side of the receiving groove.

Preferably, the end of the limiting portion used to enter the receiving groove is an extended end, and the extended end has a guide surface, and the guide surface is inclined downward from the upper side of the extended end, so that The guide surface is used to guide the locking piece to enter the receiving groove.

In this solution, the guide surface facilitates the limiting part to avoid the locking part entering the receiving groove from top to bottom, and prevents the limiting part from interfering with the movement of the locking part.

Preferably, the lock seat is also provided with an insertion hole, the insertion hole communicates with the accommodating groove, the limiting part is inserted in the insertion hole, and the limiting part extends from the insertion hole to the protruding from the receiving groove.

In this solution, the insertion hole is convenient for guiding the limiting part to move in and out of the receiving groove, and at the same time plays a role of limiting the position of the limiting part in the receiving groove.

Preferably, the extending direction of the insertion hole is perpendicular to the extending direction of the receiving groove.

In this solution, by setting the extension direction of the above-mentioned insertion hole, it is convenient to guide the limiting part to enter the receiving groove horizontally so as to limit the locking member from shaking in the vertical direction.

Preferably, the lock seat is also provided with an installation groove, the installation groove is provided on the other side of the insertion hole and the accommodation groove, and the installation groove and the accommodation groove pass through the insertion hole In communication with each other, the limiting portion is partially accommodated in the installation groove.

In this solution, by providing the above-mentioned installation groove, it is convenient to install or replace the limiting part.

Preferably, a mounting hole is provided on the side of the mounting groove away from the receiving groove, one end of the limiting part is inserted into the mounting hole, and the other end of the limiting part is passed through the insertion hole .

In this solution, the stability of the horizontal movement of the limiting part is improved by providing installation holes and insertion holes for insertion at both ends of the limiting part.

Preferably, the end of the limiting portion exceeds the side of the mounting hole;

And/or, the installation hole is also used to limit the moving direction of the limiting part;

And/or, the inner surface of the mounting hole is in contact with the outer surface of the limiting part;

And/or, the extending direction of the mounting hole is consistent with the moving direction of the limiting part.

In this solution, the end of the limiting part exceeds the side of the mounting hole, so that when the limiting part protrudes into the receiving groove, one end of the limiting part is detached from the mounting hole, causing the limiting part to fall from the lock seat .

Preferably, the locking mechanism further includes a reset part, the reset part is arranged between the lock seat and the limiting part, and the reset part is used to drive the limiting part toward the receiving groove. direction to move.

In this solution, the reset part exerts an active force on the limiting part to move in the direction of the accommodating groove. On the one hand, it can avoid the problem of mis-unlocking when the limiting part retracts away from the accommodating groove; Afterwards, the position-limiting part is moved toward the direction of the accommodating groove to realize the function of automatic locking, which can improve the safety and reliability of the locking mechanism.

Preferably, one end of the reset part is against the lock seat, and the other end of the reset part is against the limiting part;

The reset part is arranged in the installation groove of the lock seat, and one end of the reset part is against the side of the installation groove;

And/or, the other end of the reset part is against the other side of the installation groove;

And/or, the reset part is sleeved on the limiting part;

And/or, the return part is a return spring, the return spring is sleeved on the return part, one end of the return spring is against the lock seat, and the other end of the return spring is against the limiting part.

In this solution, through the arrangement of the reset part, it is convenient to apply a stable and reliable thrust to the limiting part, and improve the locking stability of the locking part by the limiting part.

Preferably, the locking mechanism further includes a driving part, the driving part acts on the limiting part, and the driving part is used to drive the limiting part into or away from the receiving groove.

In this solution, by setting the above-mentioned driving part, it is convenient to control the movement of the limiting part along the horizontal direction to extend into or leave the receiving groove.

Preferably, the driving part acts on an end of the limiting part away from the receiving groove.

In this solution, by arranging the above-mentioned driving part, it is avoided that the driving part interferes with the movement of the limiting part in the receiving groove when the driving part drives and moves.

Preferably, the driving part includes a locking bar and a connecting piece, the locking bar extends along the moving direction of the limiting part, and the connecting part extends from the locking bar to the direction of the limiting part, so The locking rod drives the limiting part to move through the connecting piece.

In this solution, by providing the locking bar and the connecting piece, it is convenient to control the movement of the limiting part at a position away from the receiving groove or the limiting part, so as to avoid interference with the movement of the limiting part.

Preferably, the connecting piece has a connecting hole, and the limiting part is inserted into the connecting hole;

And/or, the driving part includes a plurality of connecting parts, and the connecting parts are sequentially arranged at intervals on the locking bar, and each of the connecting parts is correspondingly connected to a different limiting part;

And/or, the connecting piece fits with the side of the lock seat;

And/or, the driving part further includes a power part, and the power part drives the lock bar to move.

In this solution, through the above arrangement, it is convenient to simultaneously control the synchronous movement of multiple limiting parts, so as to realize the synchronous unlocking or locking of multiple locking parts.

Preferably, the locking member includes a lock shaft and a mounting seat, the lock shaft is connected to the battery box through the mounting seat, the lock shaft is used to go deep into the receiving groove, and the limiting part limits The lock shaft located in the receiving groove moves.

In this solution, through the above arrangement, it is convenient for the locking member and the locking mechanism to cooperate with each other to realize the restriction on the vertical movement of the locking member, and also restrict the horizontal movement of the lock shaft.

Preferably, the side of the lock shaft facing the bottom of the receiving groove has a supporting surface, and the supporting surface is in contact with the bottom surface of the receiving groove;

And/or, the supporting surface is an arc surface.

In this solution, through the above arrangement, it is convenient for the receiving groove to form a stable support for the lock shaft, so as to avoid the rocking of the lock shaft relative to the receiving groove.

Preferably, the side of the lock shaft facing the limiting part has an abutting surface, and the abutting surface is used to resist the limiting part.

And/or, the range of the included angle between the contact surface and the horizontal plane is 5°-30°

And/or, the length of the abutting surface along the direction in which the limiting part is inserted into the receiving groove is not greater than the length of the abutting surface of the limiting part along the direction in which the limiting part is inserted into the receiving groove.

In this solution, through the above arrangement, the abutment surface completely covers the abutment surface in the direction in which the limiting portion is inserted into the accommodating groove, thereby effectively blocking the accommodating groove.

A bracket assembly is used for installing a battery box, the bracket assembly includes a bracket body and the above-mentioned locking mechanism, and the locking mechanism is arranged on the bracket body.

In this solution, the bracket assembly with the above structure can prevent the battery box from shaking in the vertical direction, and improve the stability and reliability of the connection of the battery box on the bracket assembly.

Preferably, the bracket assembly further includes a bottom plate, and the bottom plate is provided with several openings, and the lock seat of the locking mechanism is inserted into the openings.

In this solution, the compactness of the bracket assembly is improved.

Preferably, the bottom of the accommodating groove is higher than the upper side of the bottom plate;

And/or, the driving part of the locking mechanism is located on the lower side of the bottom plate;

And/or, the connecting piece of the driving part of the locking mechanism extends upward from the lower side of the bottom plate and exceeds the upper side of the bottom plate;

And/or, the bottom plate is provided with multiple columns of the openings; the same column includes multiple columns of the openings.

Preferably, the bracket assembly further includes a blocking member extending upward from the upper side of the bottom plate, and the blocking member is used to limit the movement of the battery box in the horizontal plane.

In this solution, accidental movement of the battery box can be avoided in the horizontal plane.

Preferably, the cross section of the blocking member is "L" shaped, and the inner side of the "L" shape fits the outer side of the battery box;

The bottom plate is quadrilateral, and the blocking member is provided with four corners of the bottom plate.

In this solution, the blocking member and the bottom plate are simple in structure and reliable in use.

An electric vehicle, the electric vehicle comprises a battery box and the above-mentioned bracket assembly, the battery box is installed in the bracket assembly.

In this solution, the jumping of the battery box can be avoided, and the safety and reliability of the electric vehicle can be improved.

Preferably, the bottom of the battery box has several reinforcing pieces, and the locking pieces of the locking mechanism are connected to the reinforcing pieces.

In this solution, the structural strength of the battery box can be improved.

A locking method for a battery box, the locking method for the battery box is used for the above-mentioned electric vehicle;

controlling the locking member of the battery box to enter the accommodating groove from top to bottom;

Controlling the battery box to slide past the limiting part and continue to move towards the bottom of the receiving groove, the limiting part extends into the receiving groove;

The battery box is controlled to move toward the bottom of the receiving groove to reach the locking position, and the locking member abuts against the limiting portion.

In this solution, the locking method is easy to operate, and the battery box can be locked to the bracket assembly simply, conveniently and reliably.

controlling the position-limiting part to leave the receiving groove;

The battery box at the locking position is controlled to move away from the bottom of the receiving slot to disengage from the receiving slot.

In this solution, the locking method is easy to operate, and the battery box can be unlocked from the bracket assembly simply, conveniently and reliably.

On the basis of conforming to common knowledge in the field, the above-mentioned preferred conditions can be combined arbitrarily to obtain preferred examples of the present invention.

The positive progress effect of the present invention is:

In the present invention, an accommodation groove and a limiting part are provided on the lock seat, and the limiting part can limit the locking piece entering the accommodation groove, avoiding the upward movement of the locking piece, thereby realizing the relative fixation of the battery box, and effectively realizing the battery The fixing of the box in the vertical direction prevents the battery box from shaking in the vertical direction relative to the battery bracket. At the same time, the accommodating groove limits the shaking of the locking member relative to the battery bracket in the horizontal plane, which can further improve the safety and stability of the connection between the battery box and the battery bracket.

Description of drawings

FIG. 1 is a three-dimensional structural schematic view of a battery box of an electric vehicle disposed on a bracket assembly according to a preferred embodiment of the present invention.

FIG. 2 is a three-dimensional structure schematic diagram of another perspective view of the battery box in FIG. 1 disposed on the bracket assembly.

FIG. 3 is a schematic perspective view of the bracket assembly in FIG. 1 .

FIG. 4 is a schematic perspective view of the locking structure of the bracket assembly in FIG. 3 .

FIG. 5 is a three-dimensional structural schematic view of the locking mechanism in FIG. 4 with the locking member removed.

FIG. 6 is a schematic perspective view of the three-dimensional structure of the lock seat of the locking mechanism in FIG. 4 .

FIG. 7 is a schematic perspective view of the three-dimensional structure of the limiting portion of the locking mechanism in FIG. 4 .

FIG. 8 is a schematic perspective view of the three-dimensional structure of the locking lever and the connecting piece of the locking mechanism in FIG. 4 .

FIG. 9 is a schematic perspective view of the three-dimensional structure of the locking member of the locking mechanism in FIG. 4 .

FIG. 10 is a structural schematic diagram of a cross-section of the locking member in FIG. 9 .

FIG. 11 is a schematic perspective view of the three-dimensional structure of the bottom plate of the bracket assembly in FIG. 3 .

FIG. 12 is a schematic perspective view of the three-dimensional structure of the battery box in FIG. 1 .

Explanation of reference signs:

Locking mechanism 100, reset part 11, lock seat 20, accommodation groove 21, accommodation surface 211, insertion hole 22, installation groove 23, installation hole 24, limit part 30, abutment surface 31, abutment surface 32, protruding End 33, guiding surface 34, extension rod 35, driving part 40, locking rod 41, connecting piece 42, connecting hole 43, locking piece 50, locking shaft 51, supporting surface 511, abutting surface 512, mounting seat 52, bracket Assembly 600 , bracket body 61 , bottom plate 62 , opening 63 , blocking piece 64 , battery box 700 , and reinforcing piece 71 .

Detailed ways

Example 1

As shown in FIGS. 1 to 12 , this embodiment is an electric vehicle, which includes a battery box 700 and a bracket assembly 600 as follows. The figure shows the battery box 700 and the bracket assembly 600, and does not show other components of the electric vehicle. The battery box 700 is installed in the bracket assembly 600, which can prevent the battery box 700 from bouncing and improve the safety and reliability of the electric vehicle.

In Fig. 2-Fig. 11, a bracket assembly 600 is shown, which is used to install the battery box 700. The bracket assembly 600 includes a bracket body 61 and a locking mechanism 100 as follows. The locking mechanism 100 Installed on the bracket body 61 , it can prevent the battery box 700 from bouncing, and improve the stability and reliability of the battery box 700 .

In Fig. 4-Fig. 10, the locking mechanism 100 and related structural diagrams are shown in the figure. The locking mechanism 100 is used to lock and fix the battery box 700 on the electric vehicle. The locking mechanism 100 includes a lock seat 20 and a limiter. The position part 30, the upper side of the lock seat 20 is provided with a receiving groove 21 extending downward, and the receiving groove 21 is used to accommodate the locking member 50 of the battery box 700; the limit part 30 is arranged on the lock seat 20, and the limit part At least part of the 30 can extend into the receiving groove 21 to restrict the locking member 50 located in the receiving groove 21 from moving upwards and away from the receiving groove 21 . By setting the receiving groove 21 and the limiting part 30 on the lock seat 20, the limiting part 30 can enter the receiving groove 21 to restrict the lock shaft 51, so as to prevent the locking member 50 from moving upward, thereby realizing the relative fixation of the battery box 700. The fixing of the battery box 700 in the vertical direction can be effectively realized, and the shaking problem of the battery box 700 can be avoided. At the same time, the receiving groove 21 limits the shaking of the locking member 50 relative to the battery bracket in the horizontal plane, which can further improve the safety and stability of the connection between the battery box 700 and the battery bracket.

The receiving groove 21 extends in a vertically downward direction. The accommodating groove 21 extends vertically downward to facilitate the smooth entry or exit of the locking member 50 of the battery box 700 .

The bottom of the receiving groove 21 has a containing surface 211 , and the shape of the containing surface 211 fits the outer surface of the locking member 50 . The containing surface 211 can increase the contact area and improve the stability and reliability of locking the battery box 700 . As an embodiment, the bottom of the receiving groove 21 is an arc surface. The arc surface structure has a large contact area with the locking member 50 , which is convenient for forming a stable support for the locking member 50 . In other embodiments, the bottom of the containment surface 211 may also be a plane, a spherical surface, or the like.

The accommodating slot 21 has two opposite sides, and the limiting portion 30 moves from one side of the accommodating slot 21 to the other side of the accommodating slot 21 to be inserted into the accommodating slot 21 . The limiting portion 30 can effectively lock or unlock the locking member 50 by moving into or away from the receiving groove 21 .

The lock base 20 is also provided with an insertion hole 22 , the insertion hole 22 communicates with the receiving groove 21 , the limiting portion 30 is inserted in the insertion hole 22 , and the limiting portion 30 protrudes from the insertion hole 22 into the receiving groove 21 . The insertion hole 22 is convenient for guiding the limiting part 30 to move in and out of the receiving groove 21 , and at the same time plays a role of limiting the position of the limiting part 30 in the receiving groove 21 . In this embodiment, the cross section of the insertion hole 22 may be rectangular, and the protruding end 33 of the limiting portion 30 is arranged corresponding to the insertion hole 22 . The protruding end 33 may also be rectangular. In other embodiments, the cross-section of the insertion hole 22 may also have other shapes, and the protruding end 33 of the limiting portion 30 may also have other shapes.

The extension direction of the insertion hole 22 is perpendicular to the extension direction of the accommodation groove 21. By setting the extension direction of the insertion hole 22, it is convenient to guide the stopper 30 horizontally into the accommodation groove 21 to limit the locking member 50 from shaking in the vertical direction.

The lock seat 20 is also provided with an installation groove 23, the installation groove 23 is located on the other side away from the insertion hole 22 and the accommodation groove 21, the installation groove 23 and the accommodation groove 21 are connected through the insertion hole 22, and the limit part 30 is partially accommodated. In the installation groove 23 , by providing the above-mentioned installation groove 23 , it is convenient to install or replace the limiting part 30 . In this embodiment, the installation groove 23 may be a flat-bottomed groove, and in other embodiments, the installation groove 23 may also have other shapes.

The mounting groove 23 is provided with a mounting hole 24 away from the side of the receiving groove 21. One end of the limiting part 30 is inserted into the mounting hole 24, and the other end of the limiting part 30 is penetrated into the insertion hole 22. Mounting holes 24 and insertion holes 22 are respectively provided at the ends for insertion, which improves the stability of the movement of the limiting part 30 in the horizontal direction. In this embodiment, the installation hole 24 can be a cylindrical hole, and the other end of the stopper 30 can be an extension rod 35, the extension rod 35 is inserted into the cylindrical hole, and the end of the extension rod 35 exceeds the installation hole 24, as shown in the figure 3 and 4 , the extension rod 35 is also inserted into the connection hole 43 of the connector 42 . A pin is also provided at the end of the extension rod 35 to prevent the extension rod 35 from slipping out of the connecting hole 43 .

The installation hole 24 is also used to limit the moving direction of the limiting part 30 . The inner surface of the mounting hole 24 is in contact with the outer surface of the limiting portion 30 . The inner wall of the mounting hole 24 is in contact with the outer wall of the limiting part 30 , so as to limit the moving direction of the limiting part 30 . The extending direction of the mounting hole 24 is consistent with the moving direction of the limiting portion 30 . The installation hole 24 is used to limit the moving direction of the limiting part 30 , which can improve the stability of the moving of the limiting part 30 .

In this embodiment, the lock base 20 may be in the shape of a rectangular block as a whole, and the accommodating groove 21 extends inward from the side of the lock base 20 . The shape of the receiving groove 21 may be a "U" shape, and the bottom of the "U" shape may be the containing surface 211 . The installation groove 23 can also extend inward from the side of the lock base 20 . The receiving groove 21 and the installation groove 23 are spaced apart. An insertion hole 22 is defined between the receiving groove 21 and the mounting groove 23 . The other side of the installation slot 23 defines an installation hole 24 .

The bottom surface of the limiting portion 30 is provided with an abutting surface 31 , and the abutting surface 31 is used to abut against the locking member 50 located in the accommodating groove 21 to limit the upward movement of the locking member 50 . Through the mutual abutment between the abutting surface 31 at the bottom of the limiting portion 30 and the locking member 50 , the vertical shaking of the locking member 50 relative to the lock seat 20 is further restricted.

The abutting surface 31 is a plane, and the abutting surface 31 extends obliquely upward along the direction in which the limiting portion 30 is inserted into the accommodating groove 21 . When the limiting portion 30 extends into the receiving groove 21, the obliquely upwardly extending abutment surface 31 can gradually increase the pressure exerted on the locking member 50, and correspondingly, the reaction force received by the limiting portion 30 also gradually increases. Therefore, by setting the magnitude of the reaction force, the degree of penetration of the limiting portion 30 can be determined, which can avoid insufficient penetration causing the battery box 700 to fail to lock, and also avoid excessive penetration causing damage to the locking mechanism 100 . The abutting surface 31 extending obliquely upward can also increase the contact area and improve the reliability and stability of fixing the lock shaft 51 .

The included angle between the abutting surface 31 and the horizontal plane ranges from 5° to 30°. Specifically, the included angle between the contact surface 31 and the horizontal plane may be 5°, 10°, 15°, 20°, 25°, 30°, etc., or other values.

The length of the projection of the abutting surface 31 on the horizontal plane is greater than the width of the receiving groove 21 . Thus, the accommodating groove 21 can be completely closed.

In other embodiments, the abutting surface 31 may also be an arc surface, a spherical surface, or the like.

The end surface of the limiting portion 30 facing the side of the receiving groove 21 is an abutting surface 32 , and the abutting surface 32 is in contact with the corresponding side of the receiving groove 21 . By providing the abutting surface 32 , the gap between the limiting portion 30 and the receiving groove 21 can be reduced, and the stability of the limiting portion 30 relative to the side of the receiving groove 21 can be improved. In this embodiment, the abutting surface 32 may be a plane. In other embodiments, the abutting surface 32 may also be an arc surface, a spherical surface and the like.

The end portion of the limiting part 30 used to enter the receiving groove 21 is the extension end 33, the extension end 33 has a guide surface 34, and the guide surface 34 guides obliquely downward from the upper side of the extension end 33, and the guide surface 34 is used for Guide the locking piece 50 into the receiving groove 21 . The guide surface 34 facilitates the limiting part 30 to avoid the locking part 50 that enters the receiving groove 21 from top to bottom, and prevents the limiting part 30 from interfering with the movement of the locking part 50 . The part of the limiting part 30 that is not inserted into the receiving groove 21 can be an extension rod 35 , and an external force acts on the extension end 33 through the extending rod 35 to realize the movement of the limiting part 30 . Specifically, the guide surface 34 can also be one of a plane and an arc surface. The guiding surface 34 and the abutting surface 31 are respectively located on two opposite sides of the limiting portion 30 .

The end portion of the limiting portion 30 exceeds the side of the mounting hole 24, so that when the limiting portion 30 protrudes into the receiving groove 21, one end of the limiting portion 30 is disengaged from the mounting hole 24, causing the limiting portion 30 to disengage from the lock seat. 20 drops.

As shown in FIG. 7 , the limiting portion 30 of this embodiment includes a rectangular block-shaped extension end 33 and a cylindrical extension rod 35 connected thereto. The end surface of the extension end 33 away from the extension rod 35 is the abutment surface 32 . The guiding surface 34 and the abutting surface 31 are respectively located on two opposite sides of the protruding end 33 . The extension rod 35 is also provided with a connecting hole 43 for inserting the connecting piece 42 , and the end of the extension rod 35 is provided with a fixing hole for inserting a pin.

The locking mechanism 100 further includes a resetting part 11 , the resetting part 11 is disposed between the lock seat 20 and the limiting part 30 , and the resetting part 11 is used to drive the limiting part 30 to move toward the receiving groove 21 . The reset part 11 exerts an active force on the stopper 30 to move toward the receiving groove 21. On the one hand, it can avoid the problem that the stopper 30 retracts away from the receiving groove 21 and the problem of false unlocking occurs; After the slot 21, the stopper 30 is moved toward the receiving slot 21 to realize the automatic locking function, which can improve the safety and reliability of the locking mechanism 100 .

One end of the reset part 11 is against the lock seat 20 , and the other end of the reset part 11 is against the limiting part 30 .

The reset portion 11 is disposed in the installation groove 23 of the lock base 20 , and one end of the reset portion 11 abuts against a side surface of the installation groove 23 . The other end of the reset portion 11 abuts against the other side of the installation groove 23 .

The reset portion 11 is sleeved on the limiting portion 30 . The reset part 11 is a reset spring, and the reset spring is sleeved on the reset part 11 , one end of the reset spring is against the lock seat 20 , and the other end of the reset spring is against the limit part 30 .

By setting the resetting part 11 above, it is convenient to apply a stable and reliable thrust to the limiting part 30, and to improve the stability of the locking part 50 being locked by the limiting part 30.

As shown in FIG. 4 and FIG. 5 , the return spring is sheathed on the extension rod 35 . One end of the return spring abuts against the extended end close to the end surface of the extension rod 35 , and the other end abuts against the side of the installation groove 23 away from the insertion hole 22 , and the return spring is clamped in the installation groove 23 . The return spring may be in a compressed state. The extending end 33 moves in a direction away from the receiving groove 21, and continues to move after reaching the insertion hole 22. At this time, the return spring can resist the extending end 33, exerting force on the extending end 33, and driving the extending end 33. 33 moves toward the direction close to the receiving groove 21. It can prevent the protruding end 33 from accidentally moving away from the receiving groove 21, thereby improving the safety of locking. As an implementation, the end of the return spring can be against the opening of the insertion hole 22 , and the end of the return spring does not extend into the insertion hole 22 .

The locking mechanism 100 further includes a driving part 40 , the driving part 40 acts on the limiting part 30 , and the driving part 40 is used to drive the limiting part 30 into or away from the receiving groove 21 . By setting the above-mentioned driving part 40 , it is convenient to control the movement of the limiting part 30 in the horizontal direction to extend into or leave the receiving groove 21 . The driving part 40 acts on the end of the limiting part 30 away from the receiving groove 21 to prevent the driving part from interfering with the movement of the limiting part 30 in the receiving groove 21 .

The driving part 40 includes a locking bar 41 and a connecting piece 42. The locking bar 41 extends along the moving direction of the limiting part 30. The connecting piece 42 extends from the locking bar 41 to the direction of the limiting part 30. The locking bar 41 drives the limiting part 30 through the connecting piece 42. The bit portion 30 moves. By arranging the locking bar 41 and the connecting piece 42 , it is convenient to control the movement of the limiting portion 30 at a position away from the receiving groove 21 or the limiting portion 30 , so as to avoid interference with the movement of the limiting portion 30 .

The connecting member 42 has a connecting hole 43 , and the limiting portion 30 is inserted into the connecting hole 43 .

The driving part 40 includes a plurality of connecting parts 42 , and the plurality of connecting parts 42 are sequentially arranged on the locking bar 41 at intervals, and each connecting part 42 is correspondingly connected to a different limiting part 30 . The connecting piece 42 is attached to the side of the lock base 20 .

Through the above arrangement, it is convenient to simultaneously control the synchronous movement of the plurality of limiting parts 30 so as to realize the synchronous unlocking or locking of the plurality of locking members 50 .

The connecting piece 42 extends vertically upward from the upper side of the locking bar 41, and the lock base 20 is located above the locking bar 41 and is arranged close to the connecting piece 42. The connecting piece 42 is provided with a through hole, and one end of the stopper 30 is in turn Pass through the mounting hole 24 on the lock seat 20 and the through hole on the connector 42, and extend the through hole, and an anti-off piece is provided at the protruding end of the limiting part 30 to prevent the limiting part 30 from passing through. fall out of the hole.

The driving part 40 also includes a power part, and the power part drives the lock bar 41 to move. The power part can specifically be a cylinder assembly, a linear motor assembly, etc., which can realize the movement of the locking rod 41

The locking member 50 includes a lock shaft 51 and a mounting seat 52 , the lock shaft 51 is connected to the battery box 700 through the mounting seat 52 , the lock shaft 51 is used to go deep into the receiving groove 21 , and the stopper 30 restricts the locking shaft 51 located in the receiving groove 21 move. It is convenient for the locking member 50 to cooperate with the locking mechanism 100 to realize the restriction on the vertical movement of the locking member 50 and also restrict the horizontal movement of the locking shaft 51 .

The side of the lock shaft 51 facing the bottom of the receiving groove 21 has a supporting surface 511 , and the supporting surface 511 is attached to the bottom surface of the receiving groove 21 .

The support surface 511 is an arc surface. In other embodiments, the supporting surface 511 may also be a plane, a spherical surface, or the like. It is convenient for the accommodating groove 21 to form a stable support for the lock shaft 51 and prevent the lock shaft 51 from shaking relative to the accommodating groove 21 .

The locking shaft 51 has an abutting surface 512 on a side facing the limiting portion 30 , and the abutting surface 512 is used to abut against the limiting portion 30 .

The abutting surface 512 is a plane, and the abutting surface 512 extends obliquely upward along the direction in which the limiting portion 30 is inserted into the accommodating groove 21 .

The included angle between the contact surface 512 and the horizontal plane ranges from 5° to 30°. Specifically, the included angle between the contact surface 512 and the horizontal plane may be 5°, 10°, 15°, 20°, 25°, 30°, etc., or other values.

The length of the abutting surface 512 along the direction in which the limiting portion 30 is inserted into the receiving groove 21 is not greater than the length of the abutting surface 31 of the limiting portion 30 along the direction in which the limiting portion 30 is inserted into the accommodating groove 21, so that the abutting surface 31 is in the direction of the limiting portion. 30 completely covers the abutment surface 512 in the direction of inserting into the receiving groove 21 , which can effectively block the receiving groove 21 .

Example 2

The bracket assembly 600 also includes a bottom plate 62 , and the bottom plate 62 is provided with a plurality of openings 63 , and the lock socket 20 of the locking mechanism 100 is inserted into the openings 63 , so as to improve the compactness of the bracket assembly 600 .

As an implementation manner, the lock seat 20 can be inserted into the opening 63 . The lower side of the lock seat 20 can be flush with the lower side of the bottom plate 62 . The upper side of the lock seat 20 exposes the upper side of the bottom plate 62 . After the locking member 50 is inserted into the receiving slot 21 , there is a gap between the locking member 50 and the upper side of the bottom plate 62 .

As shown in FIG. 3 , the bottom of the receiving groove 21 is higher than the upper side of the bottom plate 62 .

The driving part 40 of the locking mechanism 100 is located on the lower side of the bottom plate 62 , which can improve the flatness of the upper side of the bottom plate 62 and facilitate the installation of the battery box 700 .

The connecting piece 42 of the driving part 40 of the locking mechanism 100 extends upwards from the lower side of the bottom plate 62 and exceeds the upper side of the bottom plate 62 ;

The bottom plate 62 is provided with a plurality of rows of openings 63 ; the same row includes a plurality of openings 63 . In this embodiment, there are three holes 63 in each row, and one bottom plate 62 has four rows of holes 63 . In other embodiments, other values are also possible.

The bracket assembly 600 also includes a stopper 64 extending upward from the upper side of the bottom plate 62 , the stopper 64 is used to limit the movement of the battery box 700 in the horizontal plane, and can prevent the battery box 700 from accidentally moving in the horizontal plane.

The cross section of the blocking member 64 is "L" shaped, and the inner side of the "L" shape fits the outer side of the battery box 700 . As an implementation, along the direction close to the bottom plate 62 , the thickness of the “L”-shaped side wall can be increased, so as to better clamp the battery box 700 .

The bottom plate 62 is quadrilateral, and the blocking member 64 is provided at four corners of the bottom plate 62 . The blocking member 64 and the bottom plate 62 are simple in structure and reliable in use.

As shown in FIG. 12 , the bottom of the battery box 700 has several reinforcing pieces 71 , and the locking piece 50 is connected to the reinforcing pieces 71 , which can improve the structural strength of the battery box 700 . In the figure, the bottom of the battery box 700 is provided with a plurality of reinforcements 71 , and the locking member 50 is connected to the reinforcements 71 .

Example 3

This embodiment also provides a locking method of the battery box 700, the locking method of the battery box 700 is used for the electric vehicle in the first embodiment and the bracket assembly 600 in the second embodiment;

Control the locking part 50 of the battery box 700 to enter the receiving groove 21 from top to bottom; specifically include: the driving part 40 drives the limiting part 30 to move, and the limiting part 30 leaves the receiving groove 21; Apply force. The locking member 50 can enter the receiving groove 21.

After controlling the battery box 700 to slide past the stopper 30 and continue to move towards the bottom of the receiving groove 21, the stopper 30 extends into the receiving groove 21; Under action, the limiting portion 30 enters the receiving groove 21 , the abutting surface 31 of the limiting portion 30 exerts force on the abutting surface 512 of the locking member 50 , and the limiting portion 30 prevents the locking member 50 from moving upward.

The battery box 700 is controlled to move toward the bottom of the receiving groove 21 to reach the locking position, and the locking member 50 abuts against the limiting portion 30 . Specifically, it includes: under the action of one or both of the driving part 40 and the reset part 11, the limiting part 30 completely enters the receiving groove 21, and the abutment surface 31 of the limiting part 30 exerts an action on the abutting surface 512 of the locking member 50. Force, the limiting portion 30 prevents the locking member 50 from moving upward. The abutting surface 32 of the limiting portion 30 is in contact with the side of the receiving groove 21 . The supporting surface 511 of the locking member 50 is in contact with the containing surface 211 of the receiving groove 21 .

The locking method is easy to operate, and can lock the battery box 700 to the bracket assembly 600 simply, conveniently and reliably.

Example 4

This embodiment also provides an unlocking method of the battery box 700, the locking method of the battery box 700 is used for the electric vehicle in the first embodiment and the bracket assembly 600 in the second embodiment;

Controlling the position limiting part 30 to leave the receiving groove 21 ; specifically includes: the driving part 40 drives the limiting part 30 to move, and the limiting part 30 completely leaves the receiving groove 21 ; meanwhile, the reset part 11 exerts force on the limiting part 30 .

The battery box 700 at the locked position is controlled to move away from the bottom of the receiving slot 21 to disengage from the receiving slot 21 . Specifically, it includes: the locking member 50 on the battery box 700 moves upward, and the locking member 50 continues to move upward after exceeding the limit portion 30 until the locking member 50 leaves the receiving groove 21 . The locking method is easy to operate, and the battery box 700 can be unlocked from the bracket assembly 600 simply, conveniently and reliably.

Although the specific implementations of the present invention have been described above, those skilled in the art should understand that these are only examples, and various changes or changes can be made to these implementations without departing from the principle and essence of the present invention. Revise. Accordingly, the protection scope of the present invention is defined by the appended claims.

Claims

A locking mechanism for locking and fixing a battery box on an electric vehicle, characterized in that the locking mechanism includes:

A lock seat, the upper side of the lock seat is provided with a downwardly extending receiving groove, and the receiving groove is used to accommodate the locking member of the battery box;

A limiting part, the limiting part is arranged on the lock seat, and at least part of the limiting part can extend into the receiving groove, so as to limit the upward movement of the locking member located in the receiving groove out of the holding tank.
The locking mechanism according to claim 1, wherein the accommodating groove extends vertically downward;

And/or, the bottom of the receiving groove has a containment surface, and the shape of the containment surface fits the outer surface of the locking member;

And/or, the bottom of the accommodating groove is an arc surface.
The locking mechanism according to claim 1 or 2, wherein the accommodating groove has two opposite sides, and the limiting part faces from one side of the accommodating groove to the other side of the accommodating groove Move to insert into the receiving slot.
The locking mechanism according to at least one of claims 1-3, characterized in that, the bottom surface of the limiting part is provided with an abutment surface, and the abutment surface is used to abut against the abutment located in the receiving groove. a locking member to limit the upward movement of the locking member;

Preferably, the abutting surface is a plane, and the abutting surface extends obliquely upward along the direction in which the limiting portion is inserted into the receiving groove;

And/or, the range of the included angle between the abutting surface and the horizontal plane is 5°-30°;

And/or, the length of the projection of the abutting surface on the horizontal plane is greater than the width of the receiving groove.
The locking mechanism according to at least one of claims 1-4, characterized in that, the end surface of the side of the limiting portion facing the receiving groove is an abutment surface, and the abutment surface is in contact with the corresponding said abutment surface. The sides of the accommodating groove are fitted together.
The locking mechanism according to at least one of claims 1-5, characterized in that, the end of the limiting portion used to enter the receiving groove is a protruding end, and the protruding end has a guide surface, The guide surface is guided obliquely downward from the upper side of the protruding end, and the guide surface is used to guide the locking piece to enter the receiving groove.
The locking mechanism according to at least one of claims 1-6, wherein the lock seat is further provided with an insertion hole, the insertion hole communicates with the accommodating groove, and the limiting part is inserted into In the insertion hole, the limiting portion protrudes from the insertion hole into the receiving groove.
The locking mechanism according to claim 7, wherein the extending direction of the insertion hole is perpendicular to the extending direction of the receiving groove.
The locking mechanism according to claim 7, wherein the lock base is further provided with an installation groove, the installation groove is provided on the other side of the insertion hole and the accommodation groove, and the installation The groove communicates with the receiving groove through the insertion hole, and the limiting portion is partially accommodated in the installation groove;

Preferably, a mounting hole is provided on a side of the mounting groove away from the receiving groove, one end of the limiting portion is inserted into the mounting hole, and the other end of the limiting portion is passed through the insertion hole.
The locking mechanism according to claim 9, characterized in that, the end of the limiting part exceeds the side of the mounting hole;

And/or, the installation hole is also used to limit the moving direction of the limiting part;

And/or, the inner surface of the mounting hole is in contact with the outer surface of the limiting part;

And/or, the extending direction of the mounting hole is consistent with the moving direction of the limiting part.
The locking mechanism according to at least one of claims 1-10, characterized in that, the locking mechanism further comprises a reset part, the reset part is arranged between the lock seat and the limiting part, The reset part is used to drive the limiting part to move toward the receiving groove;

Preferably, one end of the reset part is against the lock seat, and the other end of the reset part is against the limiting part;

The reset part is arranged in the installation groove of the lock seat, and one end of the reset part is against the side of the installation groove;

And/or, the other end of the reset part is against the other side of the installation groove;

And/or, the reset part is sleeved on the limiting part;

And/or, the return part is a return spring, the return spring is sleeved on the return part, one end of the return spring is against the lock seat, and the other end of the return spring is against the limiting part.
The locking mechanism according to at least one of claims 1-11, characterized in that, the locking mechanism further comprises a driving part, the driving part acts on the limiting part, and the driving part is used to drive The limiting part extends into or away from the receiving groove;

Preferably, the driving part acts on an end of the limiting part away from the receiving groove.
The locking mechanism according to claim 12, wherein the driving part comprises a locking bar and a connecting piece, the locking bar extends along the moving direction of the limiting part, and the connecting piece extends from the locking bar Extending towards the direction of the limiting part, the locking rod drives the limiting part to move through the connecting piece.
The locking mechanism according to claim 13, wherein the connecting piece has a connecting hole, and the limiting part is inserted into the connecting hole;

And/or, the driving part includes a plurality of connecting parts, and the connecting parts are sequentially arranged at intervals on the locking bar, and each of the connecting parts is correspondingly connected to a different limiting part;

And/or, the connecting piece fits with the side of the lock seat;

And/or, the driving part further includes a power part, and the power part drives the lock bar to move.
The locking mechanism according to at least one of claims 1-14, wherein the locking member includes a lock shaft and a mounting seat, and the lock shaft is connected to the battery box through the mounting seat, so that The lock shaft is used to go deep into the accommodating groove, and the limiting part restricts the movement of the lock shaft in the accommodating groove;

Preferably, the side of the lock shaft facing the bottom of the receiving groove has a supporting surface, and the supporting surface fits with the bottom surface of the receiving groove;

And/or, the supporting surface is an arc surface.
The locking mechanism according to claim 15, characterized in that, the side of the lock shaft facing the limiting part has an abutting surface, and the abutting surface is used to resist the limiting part;

Preferably, the abutting surface is a plane, and the abutting surface extends obliquely upward along the direction in which the limiting portion is inserted into the accommodating groove;

And/or, the range of the included angle between the contact surface and the horizontal plane is 5°-30°;

And/or, the length of the abutting surface along the direction in which the limiting part is inserted into the receiving groove is not greater than the length of the abutting surface of the limiting part along the direction in which the limiting part is inserted into the receiving groove.
A bracket assembly for installing a battery box, characterized in that the bracket assembly includes a bracket body and a locking mechanism according to any one of claims 1-16, the locking mechanism Set on the bracket body.
The bracket assembly according to claim 17, characterized in that, the bracket assembly also includes a bottom plate, the bottom plate is provided with a number of openings, and the lock seat of the locking mechanism is inserted into the openings .
The bracket assembly according to claim 18, wherein the bottom of the receiving groove is higher than the upper side of the bottom plate;

And/or, the driving part of the locking mechanism is located on the lower side of the bottom plate;

And/or, the connecting piece of the driving part of the locking mechanism extends upward from the lower side of the bottom plate and exceeds the upper side of the bottom plate;

And/or, the bottom plate is provided with multiple columns of the openings; the same column includes multiple columns of the openings.
The bracket assembly according to claim 19, wherein the bracket assembly further comprises a stopper extending upward from the upper side of the bottom plate, the stopper is used to limit the Movement of the battery box in the horizontal plane;

Preferably, the cross-section of the blocking member is "L"-shaped, and the inner side of the "L"-shaped is attached to the outer side of the battery box;

The bottom plate is quadrangular, and the blocking member is provided with four corners of the bottom plate.
An electric vehicle, characterized in that the electric vehicle comprises a battery box and the bracket assembly according to any one of claims 17-20, the battery box is installed in the bracket assembly.
The electric vehicle according to claim 21, wherein the bottom of the battery box has several reinforcing pieces, and the locking pieces of the locking mechanism are connected to the reinforcing pieces.
A method for locking a battery box, characterized in that the method for locking a battery box is used in the electric vehicle as claimed in claim 21 or 22;

controlling the locking member of the battery box to enter the accommodating groove from top to bottom;

Controlling the battery box to slide past the limiting part and continue to move towards the bottom of the receiving groove, the limiting part extends into the receiving groove;

The battery box is controlled to move in a direction close to the bottom of the accommodating groove to reach a locking position, and the locking member abuts against the limiting portion.
A method for locking a battery box, characterized in that the method for locking a battery box is used in the electric vehicle as claimed in claim 21 or 22;

controlling the position-limiting part to leave the receiving groove;

The battery box at the locking position is controlled to move away from the bottom of the receiving slot to disengage from the receiving slot.