CN212011049U

CN212011049U - Battery pack fixing system

Info

Publication number: CN212011049U
Application number: CN202020150064.0U
Authority: CN
Inventors: 张建平; 仇丹梁; 兰志波
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2020-01-23
Filing date: 2020-01-23
Publication date: 2020-11-24
Anticipated expiration: 2030-01-23

Abstract

The utility model provides a battery package fixed system, it includes locking mechanical system, on locking mechanical system located the contact surface of battery package and bracket, through the rotation locking mechanical system will battery package unblock or lock in on the bracket. According to the battery pack fixing system, the battery pack is unlocked or locked on the bracket by utilizing the rotation actions of the locking mechanism along different directions, so that the purpose of fixing the battery pack on the bracket is achieved, and compared with the traditional locking mechanism, the battery pack fixing system has the advantages of firmer fixation, high reliability and the like.

Description

Battery pack fixing system

Technical Field

The utility model relates to a trade the electric field, in particular to battery package fixing system.

Background

In the prior art, the battery pack is usually fixed on the bracket through a locking mechanism arranged on the bracket, a locking block on the locking mechanism realizes the locking of the battery pack in a horizontal displacement mode, the fixing firmness degree of the battery pack is poor, and the position of the battery pack is easily locked when the battery pack is not placed in place, so that the plugging of an electric connector between the battery pack and the bracket is not in place, and the normal use of a vehicle is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide a battery package fixing system in order to overcome prior art and carry out the relatively poor defect of fixed firm degree of locking mechanical system that locks to the battery package position.

The utility model discloses an above-mentioned technical problem is solved through following technical scheme:

a battery pack fixing system comprises a locking mechanism, wherein the locking mechanism is arranged on a contact surface of a battery pack and a bracket, and the battery pack is unlocked or locked on the bracket by rotating the locking mechanism.

According to the battery pack fixing system, the battery pack is unlocked or locked on the bracket by utilizing the rotation actions of the locking mechanism along different directions, so that the purpose of fixing the battery pack on the bracket is achieved, and compared with the traditional locking mechanism, the battery pack fixing system has the advantages of firmer fixation, high reliability and the like.

Preferably, the locking mechanism includes a rotating plug-in unit and a limiting unit, the rotating plug-in unit and the limiting unit are respectively disposed on the bracket and the battery pack, and the rotating plug-in unit is limited by the limiting unit by driving the rotating plug-in unit to rotate.

Through the structure, the locking mechanism realizes the functions of locking and unlocking the position between the battery pack and the bracket by utilizing the rotation of the rotary plug-in relative to the limiting part.

Preferably, an electrical connector is arranged on a contact surface where the battery pack contacts the bracket, and the electrical connector comprises a battery end electrical connector located on the contact surface of the battery pack and a vehicle end electrical connector located on the contact surface of the bracket;

the rotating plug-in components and the limiting components are arranged on the contact surface of the bracket and the contact surface of the battery pack respectively.

The structure is arranged, the positions of the battery pack and the bracket can be locked through the locking mechanism, the plugging state of adjacent electric connectors is improved, and the electric connection reliability of the battery pack is further improved.

Preferably, when the battery-end electrical connector is inserted into the vehicle-end electrical connector, the rotating plug-in component rotates and is limited by the limiting component, so as to prevent the battery pack and the bracket from being locked in position, but the electrical connector is not inserted in position.

Preferably, when the battery-end electrical connector is inserted into the vehicle-end electrical connector, the locking mechanism can apply a pulling force to the limiting member along the insertion direction of the electrical connector, so that the battery pack and the bracket are further attached by the pulling force, and the electrical connector is ensured to be inserted in place.

Preferably, the locking mechanism applies the pulling force to the limiting member through the rotation of the rotating insert, so as to simultaneously achieve the two purposes of locking the battery pack with the bracket and applying the pulling force to the battery pack and the bracket to tightly insert the battery pack on the bracket by utilizing the rotation action of the rotating insert.

Preferably, when the battery end electrical connector is pulled out relative to the vehicle end electrical connector, the rotating plug-in component rotates and releases the limit relative to the limiting component, so that the battery pack can be separated from the bracket.

Preferably, when the battery-end electrical connector is pulled out relative to the vehicle-end electrical connector, the locking mechanism can apply a pushing force to the limiting member along the pulling direction of the electrical connector, so that the battery pack and the bracket are separated by the pushing force, and the electrical connector is ensured to be quickly separated.

Preferably, the locking mechanism applies the pushing force to the limiting member through rotation of the rotating insert, so that the rotating insert is used for unlocking the battery pack and the bracket and applying the pushing force to the battery pack and the bracket to separate the battery pack from the bracket.

Preferably, the limiting member is disposed on a contact surface of the battery pack, and the rotating plug-in is disposed on a contact surface of the bracket.

Preferably, the limiting member has a containing cavity, the rotating plug-in unit enters or leaves the containing cavity through rotation, and the containing cavity can limit the rotating plug-in unit located in the containing cavity, so that the rotating plug-in unit enters the limiting member through a rotation motion mode and achieves the purpose of limiting relative to the limiting member.

Preferably, the rotary insert comprises an insert head and a driving part, the driving part is connected to the insert head, and the driving part is used for driving the insert head to rotate.

Preferably, the plug-in components head includes tapered end and tapered end pivot, the tapered end pivot set up in the bracket, the tapered end connect in the tapered end pivot, drive division connect in the tapered end pivot to the drive the tapered end upset uses the axis of tapered end pivot is the upset from top to bottom as the center, realizes the rotatory purpose of linkage.

Preferably, the rotating plug-in includes at least two lock heads, the lock heads are uniformly distributed at two ends of the lock head rotating shaft, and the limiting portions of the limiting members and the plug-in heads are arranged in a one-to-one correspondence manner, so that the fixing firmness of the locking mechanism is improved in a respective locking manner.

Preferably, the driving part comprises a link mechanism, and the link mechanism drives the lock head to turn through lever motion.

Preferably, the limiting member is disposed on the battery pack, and the rotating plug-in is disposed on the bracket;

the link mechanism is arranged on the lower surface of the bracket, and the rotating fulcrum of the link mechanism is positioned on the battery support beam of the bracket.

Preferably, the surface of the battery support beam is provided with a limiting device, and the limiting device is used for limiting the lever movement of the link mechanism so as to play a role when the lever movement of the link mechanism needs to be stopped to realize that the locking mechanism locks the battery pack.

Preferably, the limiting device is a positioning pin used for limiting the relative position of the link mechanism relative to the battery support beam, so that the lever motion of the link mechanism can be locked in a relatively simple and convenient manner.

Preferably, the battery pack fixing system further comprises a positioning pin plugging and unplugging mechanism, and the positioning pin plugging and unplugging mechanism is used for plugging and unplugging the positioning pin to achieve the purpose of contact locking.

Preferably, the drive division still includes the machine of lifting, the machine of lifting is located the below of bracket, the machine of lifting pushes away and/or draws along vertical direction link mechanism to utilize the machine of lifting drive tapered end upset, realize the output of great locking force.

Preferably, a lifting cushion block is arranged on a lifting plane of the lifter, and the lifting cushion block directly acts on the lower surface of the link mechanism.

Preferably, the position of the lifting pad relative to the linkage is changeable, so as to change the action point of the lower surface of the action linkage of the lifter in this way, and realize the purpose that the lock head rotates along the first direction or the second direction.

Preferably, the limiting member includes a limiting portion, the limiting portion has an opening and the accommodating cavity, the opening is disposed on one side of the accommodating cavity along a direction perpendicular to the insertion direction of the electrical connector, and the opening is used for the plug-in head to turn over and enter the accommodating cavity.

Preferably, the plug-in head applies pushing force or pulling force to the wall surface of the accommodating cavity through overturning in the accommodating cavity, so that the battery pack can be pushed and pulled within a specified forming range through overturning movement while the locking mechanism is locked and unlocked.

The utility model discloses an actively advance the effect and lie in:

Drawings

Fig. 1 is a schematic structural view of a battery pack fixing system according to an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a bracket according to an embodiment of the present invention.

Fig. 3 is a partially enlarged view of a portion a in fig. 2.

Fig. 4 is a schematic structural diagram of a battery pack according to an embodiment of the present invention.

Fig. 5 is a partially enlarged view of a portion B in fig. 4.

Fig. 6 is a schematic flow chart illustrating a method for mounting a battery pack according to an embodiment of the present invention.

Fig. 7 is a schematic diagram of the movement of the locking mechanism of the battery pack installation method according to an embodiment of the present invention.

Fig. 8 is a schematic flow chart illustrating a method for disassembling a battery pack according to an embodiment of the present invention.

Fig. 9 is a schematic diagram of the movement of the locking mechanism in the method for disassembling the battery pack according to an embodiment of the present invention.

Fig. 10 is a schematic diagram of the movement of the rotating insert of the battery pack fixing system according to an embodiment of the present invention.

Description of reference numerals:

closure mechanism 1

Rotary insert 11

Plug-in head 111, lock 111a, lock shaft 111b

A driving part 112, a link mechanism 112a, and a rotation fulcrum 112b

Position limiting member 12

A position-limiting part 121, a containing cavity 121a and an opening 121b

Battery pack 2

Bracket 3, battery support beam 31 and limiting device 32

An electric connector 4, a battery-end electric connector 41, a vehicle-end electric connector 42

Lifting machine 6, lifting plane 61

Lifting cushion block 7

Detailed Description

The present invention will be more clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 1, the utility model provides a battery package 2 fixing system, it includes locking mechanical system 1, locking mechanical system 1 sets up on the contact surface of battery package 2 and bracket 3, specifically, this locking mechanical system 1 includes rotatory plug-in components 11 and locating part 12, rotatory plug-in components 11 set up on bracket 3, and locating part 12 sets up on battery package 2, when battery package 2 settles on bracket 3, through driving this rotatory plug-in components 11 and rotate, according to the difference of direction of rotation, make rotatory plug-in components 11 spacing by locating part 12 or remove spacingly. The battery pack 2 securing system achieves the purpose of unlocking or locking the battery pack 2 to the tray 3 by the action of rotating the rotary insert 11 of the locking mechanism 1 in different directions. Compared with the traditional locking mechanism, the fixing system of the battery pack 2 has the advantages of more firm fixation, high reliability and the like. Meanwhile, the structure is simple, and the daily maintenance and management are convenient.

Specifically, in the present embodiment, the rotary insert 11 is disposed on the bracket 3, and the stopper 12 is disposed on the battery pack 2. However, in other embodiments, the rotary plug 11 may be disposed on the battery pack 2, and the stopper 12 may be correspondingly disposed on the bracket 3, so that the rotary plug 11 disposed on the battery pack 2 may be rotated to lock and unlock the position between the battery pack 2 and the bracket 3.

As shown in fig. 2, 3, 4 and 5, an electrical connector 4 is provided on a contact surface of the battery pack 2 with the bracket 3, and the electrical connector 4 specifically includes a battery-end electrical connector 41 provided on the contact surface of the battery pack 2 and a vehicle-end electrical connector 42 provided on the contact surface of the bracket 3. For the locking mechanism 1, the rotating plug-in 11 and the limiting member 12 are respectively disposed on the contact surface of the battery pack 2 and the contact surface of the bracket 3, that is, the locking mechanism 1 and the electrical connector 4 are disposed on the same contact surface, so that when the positions of the battery pack 2 and the bracket 3 are locked by the locking mechanism 1, the plugging state of the electrical connector 4 adjacent to the locking mechanism 1 is improved, and further, the electrical connection reliability of the battery pack 2 is improved.

As shown in fig. 7, when the battery-end electrical connector 41 is inserted relative to the vehicle-end electrical connector 42, the rotating insert 11 rotates and is limited by the limiting member 12, so that the locking mechanism 1 locks the position between the battery pack 2 and the bracket 3 during the process of inserting the electrical connectors 4 into each other, thereby preventing the position between the battery pack 2 and the bracket 3 from being locked, which may result in the situation that the electrical connector 4 is not inserted in place. Further, when the battery-end electrical connector 41 is inserted relative to the vehicle-end electrical connector 42, the locking mechanism 1 can apply a pulling force to the limiting member 12 along the insertion direction of the electrical connector 4, so as to further tightly attach the battery pack 2 to the bracket 3 by the pulling force, thereby ensuring that the electrical connector 4 is inserted in place.

As shown in fig. 9, when the battery-end electrical connector 41 is pulled out from the vehicle-end electrical connector 42, the rotary insert 11 rotates and releases the position restriction with respect to the stopper 12, so that the battery pack 2 can be detached from the bracket 3. Further, when the battery-end electrical connector 41 is pulled out with respect to the vehicle-end electrical connector 42, the locking mechanism 1 can apply a pushing force to the limiting member 12 in the direction of pulling out the electrical connector 4, so as to assist the relative position separation between the battery pack 2 and the bracket 3 by the pushing force.

It should be specifically noted that, in the electrical connector 4 for the vehicle-mounted battery, the connection between the battery-end electrical connector 41 and the vehicle-end electrical connector 42 is usually tight, so when the battery pack 2 is mounted or dismounted, the battery pack 2 needs to be inserted into or pulled out of the bracket 3 by using an external power exchanging device, and during the process, the main resistance to be overcome is the insertion and extraction force on the electrical connector 4. The locking mechanism 1 can physically lock or unlock the battery pack 2 relative to the bracket 3 through rotation, and can apply corresponding pushing force or pulling force to the battery pack 2 through rotation to overcome the plugging force of the electric connector 4, so as to achieve the purpose of quickly disassembling and assembling the battery pack 2.

Meanwhile, the locking mechanism 1 is arranged on the contact surface of the battery pack 2 and the bracket 3, so that the acting force applied to the battery pack 2 by the locking mechanism 1 can be directly transmitted to the electric connector 4 on the contact surface, and the situation that the shell of the battery pack 2 is deformed due to overlarge or uneven stress when the battery pack 2 is plugged and pulled out of the traditional external battery replacement equipment is avoided.

The rotary insert 11 includes an insert head 111 and a driving part 112, the driving part 112 is connected to the insert head 111, and the driving part 112 is used for driving the insert head 111 to rotate.

The position-limiting member 12 has a receiving cavity 121a, and the plug-in head 111 of the rotary plug-in 11 enters or leaves the receiving cavity 121a in a rotary manner under the driving of the driving portion 112. When locking is required, the plug-in head 111 rotates clockwise to enter the accommodating cavity 121a, and then the plug-in head 111 abuts against the inner wall of the accommodating cavity 121a to realize physical limitation of the accommodating cavity 121a relative to the rotating plug-in 11.

Specifically, the plug-in unit head 111 includes two parts, i.e., a lock 111a and a lock rotating shaft 111b, the lock rotating shaft 111b is disposed on the bracket 3, the lock 111a is connected to the lock rotating shaft 111b, the lock 111a is a part of the plug-in unit head 111 directly entering the accommodating cavity 121a, the driving unit 112 is connected to the lock rotating shaft 111b, and the lock 111a is driven to turn up and down along the axis of the lock rotating shaft 111b, so as to achieve the purpose of linkage rotation.

As shown in fig. 3, the locking shaft 111b is coupled to a middle portion of the locking head 111a, and the locking head 111a includes a first insertion portion at an upper portion and a second insertion portion at a lower portion. As shown in fig. 7, the first insertion portion rotates in the battery pack direction to pass through the opening 121b and the receiving cavity 121a in the stopper 12. And then rotated again to rotate the first insertion portion in a direction away from the battery pack, so that the first insertion portion is limited by the limiting member 12, and similarly, the limiting member 12 includes a first insertion portion located at an end of the opening 121a and having a locking function for locking the locking head 111 a.

Meanwhile, the stopper 12 includes a stopper portion 121, and the stopper portion 121 has an opening 121b and the receiving cavity 121a, the opening 121b is disposed at a lower position of the receiving cavity 121a along a direction perpendicular to the insertion direction of the electrical connector 4, and the opening 121b is used for the insertion head 111 to enter and exit the receiving cavity 121a in an inverted manner. Further, when the insert head 111 is turned inside the housing cavity 121a, the insert head 111 can apply a pushing or pulling force to the wall surface of the housing cavity 121a to achieve a pushing or pulling action of the battery pack 2 within a specified forming range by the turning motion while locking and unlocking.

The utility model also provides a method of installing battery package 2 on bracket 3. As shown in fig. 6 and 7, which are schematic flow charts of the present embodiment, the locking mechanism 1 is driven to rotate, so that the rotating plug-in 11 moves relative to the limiting member 12 to lock the battery pack 2 on the bracket 3. Specifically, the locking process of the locking mechanism 1 includes two steps S11 and S12: first, in step S1, the battery pack 2 needs to be placed at a preset position of the bracket 3 by an external power exchanging device, which is actually a position 10cm away from the contact surfaces of the battery pack 2 and the bracket 3 in the present embodiment, that is, a position where the battery-end electrical connector 41 and the vehicle-end electrical connector 42 are close to but plugged. Meanwhile, the locking head 111a of the rotary insert 11 is driven to rotate in a counterclockwise direction (i.e., the first direction C) to avoid interference between the locking head 111a and the limiting portion 121 of the limiting member 12, and at the same time, the locking head 111a is rotated to the position of the opening 121b of the limiting portion 121.

Thereafter, in step S12, the tapered end 111a of the rotary insert 11 is driven to rotate in the clockwise direction (i.e., the second direction D), so that the tapered end 111a enters the accommodating chamber 121a from the opening 121b and finally abuts against the inner wall surface of the accommodating chamber 121 a. On the basis, by further rotating the locking head 111a, the locking head 111a applies a pushing force to the inner wall surface of the accommodating cavity 121a, so that the locking mechanism 1 applies a pulling force to the locking area of the battery pack 2 through the transmission of the force, the battery pack 2 is driven to move towards the direction close to the bracket 3, the contact surfaces of the battery pack 2 and the bracket are in contact, and the battery-end electrical connector 41 and the vehicle-end electrical connector 42 are connected. Or, in the process that the locking head 111a rotates in the clockwise direction (i.e., the second direction D), the battery pack can be pushed towards the bracket by an external force, so that the locking head 111a does not apply a force to the accommodating cavity 121a in the rotating process.

In addition, the method for installing the battery pack 2 on the bracket 3 may further include step S10, where in step S10, before the external battery replacement device pushes the battery pack 2 horizontally to the predetermined position of the bracket 3, the battery pack 2 is placed on the lifting bracket 3, and the lifting bracket 3 is controlled to lift the battery pack 2 to the height of the installation position.

In the present embodiment, the locking mechanism 1 acts on the locking area of the battery pack 2 to make the moving stroke thereof match with the plugging stroke of the electrical connector 4, where the stroke matching specifically refers to: when the locking mechanism 1 locks the battery pack 2 in place, the electrical connector 4 is plugged, so that before this, the battery pack 2 must be pushed horizontally by an external battery replacement device to a predetermined position of the bracket 3, so that the locking mechanism 1 can function

In order to enable the battery replacing device to accurately place the battery pack 2 at the preset position, a sensor is further arranged at the preset position of the bracket 3, and when the battery reaches the preset position, the sensor sends an in-place signal to stop the battery replacing device and enable the locking mechanism 1 to start working.

Preferably, a position sensor (not shown) is further provided on the bracket 3, and the position sensor is used for detecting and controlling the rotation angle of the locking mechanism 1 so as to stop the rotation when the lock head 111a of the locking mechanism 1 rotates to a specific position, thereby realizing the function of position locking. In addition, in order to avoid the failure of the in-place sensor or the excessive rotation angle of the lock 111a of the locking mechanism 1, a limiting mechanism for limiting rotation should be arranged on the bracket 3, and the mechanism can be a stopper to achieve the purpose of physical limiting, so that the rotation angle of the lock 111a of the rotation limiting mechanism is not too large, and the damage of the locking area of the battery pack 2 and the deformation of the casing of the battery pack 2 are avoided.

Furthermore, the utility model discloses still provide a method of dismantling the relative bracket 3 of battery package 2. The method is used for detaching the battery pack 2 mounted on the bracket 3 from the bracket 3. Fig. 8 and 9 are schematic diagrams illustrating a process of driving the locking mechanism 1 to rotate to move the rotating plug 11 relative to the limiting member 12 to unlock the battery pack 2 relative to the bracket 3 according to the present embodiment. Similar to the method for mounting the battery pack 2 on the bracket 3, in the unlocking method, the locking mechanism 1 applies a pushing force to the locking area of the battery pack 2 during unlocking, so as to synchronously achieve the purpose of separation between the battery-end electrical connector 41 and the vehicle-end electrical connector 42.

Specifically, the unlocking process of the lock mechanism 1 includes two steps S21 and S22: first, in step S21, the lock cylinder 111a of the lock mechanism 1 needs to be driven to rotate in the counterclockwise direction (the first direction C) so that the lock cylinder 111a moves toward the opening 121b, and in the process, the lock cylinder 111a abuts against the inner wall surface of the accommodation chamber 121 a. On the basis, by further rotating the locking head 111a, the locking head 111a applies a pushing force to the inner wall surface of the accommodating cavity 121a, so that the locking mechanism 1 applies a pushing force to the locking area of the battery pack 2 through the transmission of the force, the battery pack 2 is driven to move in a direction away from the bracket 3, and further, the contact surfaces of the battery pack 2 and the bracket are separated, and the battery end electrical connector 41 and the vehicle end electrical connector 42 are separated. Meanwhile, in the process that the locking head 111a pushes the battery pack 2 to move through rotation, after the battery pack 2 is displaced, the locking head 111a can leave the accommodating cavity 121a from the opening 121b, after the locking mechanism 1 leaves the accommodating cavity 121a, the pushing force applied to the locking area is stopped, and the locking mechanism 1 also enables the battery pack 2 to be unlocked relative to the bracket 3. Specifically, when the locking mechanism 1 stops pushing the battery pack 2 to stop the movement of the battery pack 2, the position of the battery pack 2 on the bracket 3 should be at a predetermined position. Or the battery pack 2 is pulled away from the bracket 3 by an external force during the counterclockwise rotation of the locking head 111a, i.e. the locking mechanism 1 does not apply a force to the battery pack 2 during the rotation.

Thereafter, in step S22, the lock mechanism 1 is driven to rotate clockwise (second direction D) so that the lock head 111a of the lock mechanism 1 is disengaged from the lock area of the battery pack 2 located at the preset position of the tray 3. Meanwhile, the external battery replacement device should take out the battery pack 2 from the predetermined position of the bracket 3. The purpose of disassembling the battery pack 2 is achieved.

Similarly to the above-mentioned method for mounting the battery pack 2, the method for dismounting the battery pack 2 may further include step S23, where the step S23 is to place the battery pack 2 on the lifting bracket 3 after the external power exchanging device takes out the battery pack 2 from the predetermined position of the bracket 3, and control the lifting bracket 3 to lower the height of the battery pack 2 from the mounting position, so as to achieve the purpose of recycling the battery pack 2.

In addition, the in-position sensor and the rotation limiting mechanism which function in the method of mounting the battery pack 2 can also function in the same manner in the method of dismounting the battery pack 2, and therefore, the description thereof is omitted.

In this embodiment, the locking mechanism 1 can pull the battery pack 2 to displace and perform the locking process after the battery pack 2 is placed at the predetermined position of the bracket 3 by an external battery replacement device. The battery replacement equipment is an existing product, and therefore specific structures and principles of the battery replacement equipment are not described in detail.

In addition, in the present embodiment, the single rotary insert 11 includes two locking heads 111a, the two locking heads 111a are respectively disposed at two ends of the locking head rotating shaft 111b, and correspondingly, the number of the limiting members 12 is the same as the number of the locking heads 111a, and the limiting members are disposed in one-to-one correspondence to improve the fixing firmness of the locking mechanism 1 by means of separate locking. Meanwhile, as shown in fig. 3, two sets of relatively independent locking mechanisms 1 are respectively disposed on the left and right sides of the bracket 3 to jointly fix the battery pack 2 and apply a force to the electrical connector 4 located between the two sets of locking mechanisms 1.

As shown in fig. 10, the driving portion 112 includes a link mechanism 112a, and the link mechanism 112a drives the lock rotation shaft 111b to rotate through a lever motion, so as to turn over the lock 111a, wherein, as for the specific principle of the link mechanism 112a, it belongs to the category of the prior art, and therefore, it is not described herein again. Here, since the rotary insert 11 in the present embodiment is provided on the bracket 3, the link mechanism 112a is provided at the lower surface position of the bracket 3, and the rotation fulcrum 112b of the link mechanism 112a is positioned at the battery support beam 31 in the lower half of the bracket 3 and below the battery pack 2.

A limiting device 32 is arranged on the surface of the battery support beam 31, and the limiting device 32 is used for limiting the lever movement of the link mechanism 112a so as to play a role when the lever movement of the link mechanism 112a needs to be stopped to realize the locking of the battery pack 2 by the locking mechanism 1. In this embodiment, the limiting device 32 is configured to limit by using a pin positioning manner, and when the link mechanism 112a drives the lock head 111a to move to a position where the battery pack 2 is locked on the bracket 3, the lever of the link mechanism 112a is locked at a specific position of the battery support beam 31 by using the positioning pin, so that the lever movement of the link mechanism 112a is locked in a relatively simple manner.

The fixing system of the battery pack 2 further comprises a positioning pin plugging mechanism (not shown in the figure), which is used for plugging the positioning pin out of the connecting rod mechanism 112a and the battery support beam 31 to achieve the purpose of contact locking.

In addition, the present embodiment provides a simpler implementation manner as to how the link mechanism 112a of the locking mechanism 1 generates the lever motion to turn the locking head 111 a.

In this embodiment, the driving portion 112 further includes a lifting machine 6, the lifting machine 6 is disposed below the bracket 3, and during the upward pushing process of the lifting machine 6, the lifting plane 61 pushes the lower surface of the link mechanism 112a along the vertical direction, so that the link mechanism 112a is turned over relative to the rotation pivot 112b thereof, and under the effect of the turning motion, the link mechanism 112a further drives the lock head 111a to rotate along the first direction C or the second direction D, thereby achieving the purpose of unlocking and locking.

In order to rotate the lock head 111a in the first direction C or the second direction D, if the link mechanism 112a is pushed to rotate by abutting against the lower surface of the link mechanism 112a, the lift 6 and the link mechanism 112a must be located on two sides of the rotation pivot 112b, respectively, in this case, the movable lifting pad 7 may be disposed on the lifting plane 61 of the lift 6, and the acting point of the lift 6 on the lower surface of the link mechanism 112a is changed by moving the lifting pad 7, so as to rotate the lock head 111a in the first direction C or the second direction D.

Of course, in other embodiments, the lifting machine 6 can also be kept at the same position connected to the link mechanism 112a, so as to achieve the purpose of driving the lock head 111a to rotate along the first direction C or the second direction D by applying a pushing force upwards or a pulling force downwards respectively. In addition, preferably, the positioning pin inserting and extracting mechanism may also be disposed on the lifting plane 61 of the lifter 6 to drive the positioning pin inserting and extracting mechanism to be close to the link mechanism 112a and the positioning pin while the lifter 6 is operating.

Although specific embodiments of the present invention have been described above, it will be understood by those skilled in the art that this is by way of example only and that the scope of the invention is defined by the appended claims. Various changes and modifications to these embodiments may be made by those skilled in the art without departing from the spirit and the principles of the present invention, and these changes and modifications are all within the scope of the present invention.

Claims

1. The battery pack fixing system is characterized by comprising a locking mechanism, wherein the locking mechanism is arranged on a contact surface of a battery pack and a bracket, and the battery pack is unlocked or locked on the bracket by rotating the locking mechanism.

2. The battery pack securing system according to claim 1, wherein the locking mechanism includes a rotation plug-in and a stopper, the rotation plug-in and the stopper are respectively provided on the bracket and the battery pack, and the rotation plug-in is stopped by the stopper by driving the rotation plug-in to rotate.

3. The battery pack retention system of claim 2, wherein the interface between the battery pack and the bracket is provided with electrical connectors comprising battery end electrical connectors on the interface of the battery pack and vehicle end electrical connectors on the interface of the bracket;

4. The battery pack securing system of claim 3, wherein the rotating insert rotates and is retained by the retaining member when the battery-end electrical connector is inserted relative to the vehicle-end electrical connector.

5. The battery pack retention system of claim 4, wherein the locking mechanism is capable of applying a pulling force to the retention member in the direction of insertion of the electrical connector when the battery-end electrical connector is inserted relative to the vehicle-end electrical connector.

6. The battery pack securing system of claim 5, wherein the locking mechanism applies the pulling force to the retaining member through rotation of the rotating insert.

7. The battery pack securing system according to claim 3, wherein when the battery-end electrical connector is pulled out with respect to the vehicle-end electrical connector, the rotating plug rotates and releases the position restriction with respect to the position restricting member.

8. The battery pack retention system of claim 7, wherein said locking mechanism is capable of applying a pushing force to said retention member in a direction of withdrawal of said electrical connector when said battery end electrical connector is withdrawn relative to said vehicle end electrical connector.

9. The battery pack securing system of claim 8, wherein the locking mechanism applies the pushing force to the retaining member through rotation of the rotating insert.

10. The battery pack securing system according to any one of claims 3-9, wherein the retaining member is provided on a contact surface of the battery pack and the rotating insert is provided on a contact surface of the bracket.

11. The battery pack securing system according to any of claims 3-9, wherein the retaining member has a receiving cavity into or from which the rotating insert is rotatable, the receiving cavity being capable of retaining the rotating insert within the receiving cavity.

12. The battery pack retention system of claim 11, wherein the rotatable insert includes an insert head portion and a drive portion, the drive portion coupled to the insert head portion, the drive portion configured to drive the insert head portion to rotate.

13. The battery pack securing system according to claim 12, wherein the plug-in unit head includes a locking head and a locking head rotating shaft, the locking head rotating shaft is provided to the bracket, the locking head is connected to the locking head rotating shaft, and the driving unit is connected to the locking head rotating shaft to drive the locking head to turn up and down around an axis of the locking head rotating shaft.

14. The battery pack securing system of claim 13, wherein the rotatable insert includes at least two locking heads, the locking heads are evenly distributed at both ends of the locking head shaft, and the retaining members are disposed in one-to-one correspondence with the insert heads.

15. The battery pack securing system of claim 13, wherein the actuation portion comprises a linkage that actuates the lock head to flip through a lever motion.

16. The battery pack securing system according to claim 15, wherein the retaining member is provided on the battery pack, and the rotating insert is provided on the bracket;

17. The battery pack securing system according to claim 16, wherein a surface of the battery support beam is provided with a limiting means for limiting the lever movement of the linkage mechanism.

18. The battery pack securing system of claim 17, wherein the limiting means is a locating pin for limiting the relative position of the linkage mechanism with respect to the battery support beam.

19. The battery pack securing system of claim 18, further comprising a locating pin insertion and extraction mechanism for inserting and extracting the locating pin.

20. The battery pack securing system according to claim 16, wherein the driving portion further comprises a lifter located below the bracket, the lifter pushing and/or pulling the link mechanism in a vertical direction.

21. The battery pack securing system according to claim 20, wherein the lifting plane of the lifter is provided with a lifting pad that directly acts on the lower surface of the linkage.

22. The battery pack securing system of claim 21, wherein the position of the lift pad relative to the linkage is changeable.

23. The battery pack securing system according to claim 12, wherein the retaining member includes a retaining portion having an opening and the receiving cavity, the opening being disposed on a side of the receiving cavity in a direction perpendicular to an insertion direction of the electrical connector, the opening being for allowing the plug-in head to be flipped into and out of the receiving cavity.

24. The battery pack securing system of claim 23, wherein the insert head applies a pushing or pulling force to the wall of the receiving cavity by flipping within the receiving cavity.