CN218805181U

CN218805181U - Quick-change support and battery-replacing vehicle comprising same

Info

Publication number: CN218805181U
Application number: CN202222809296.4U
Authority: CN
Inventors: 张建平; 刘青; 朱明厚
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2022-07-15
Filing date: 2022-10-24
Publication date: 2023-04-07
Anticipated expiration: 2032-10-24
Also published as: CN116118451A; CN116118463A; CN218536330U; CN218536331U; CN218558544U; CN116118467A; CN116001549A; CN218558553U; CN116118462A; CN116160835A; CN218536329U; CN218577491U; CN219007568U; CN116118456A; CN116001547A; CN116039355A; CN218558549U; CN218558555U; CN218558545U; CN116118465A

Abstract

The utility model provides a quick change support and contain its battery replacement vehicle, which comprises a bracket body, the support body is equipped with the locking mechanism who sets up along automobile body length direction interval at least, locking mechanism is used for following vertical direction with bolt locking mode locking or unblock battery package, the support body through floating unit connect in the automobile body makes the support body is vertical relative the automobile body can float. The utility model discloses a mode switching battery package of quick change support can follow vertical relative floating through the unit that floats between the support body of quick change support and the automobile body to this slows down the automobile body and in the distortion or goes the harm that the moment of torsion that the automobile body receives increases or directly transmits to the battery package and bring under jolting the road conditions, improves the life of battery package, and locking mechanism through bolt locking mode can realize trading quick installation and the dismantlement of motor vehicle, simplifies the installation and dismantlement mode, improves quick change efficiency.

Description

Quick-change support and battery-replacing vehicle comprising same

This application claims priority to chinese patent application 2022108370942, bearing the filing date of 2022, month 07 and 15. The present application refers to the above-mentioned chinese patent application in its entirety.

Technical Field

The utility model relates to a vehicle trades electric technical field, in particular to quick change support and contain its trade electric vehicle.

Background

At present, for an electric vehicle, a battery pack is generally fixedly connected with a vehicle body of the electric vehicle, and the electric vehicle supplements electric energy in the form of charging; or, the battery pack and the vehicle body of the electric vehicle can be connected in a quick-change mode, and the electric vehicle supplements electric energy in a quick-change battery pack mode. Because the charging energy supplementing mode is time-consuming and long, the quick energy supplementing mode is relatively more convenient and increasingly receives attention. However, for the electric vehicle with quick energy replacement, the electric vehicle needs to be provided with a battery pack bracket so that the battery pack can be quickly disassembled and assembled on the electric vehicle. The battery pack support is generally fixed on a vehicle body of the electric vehicle, namely, under the condition that the vehicle body is stressed due to rigid connection between the battery pack support and the vehicle body, force is transmitted to the battery pack support and then transmitted to the battery pack.

The structure can ensure that the distortion of the vehicle body caused by steering or bumping in the running process of the electric vehicle is directly transmitted to the battery pack bracket and the battery pack in a rigid connection mode, so that the connection between the battery pack and the battery pack bracket is influenced, and particularly, a locking mechanism on the battery pack bracket can be damaged to cause that the battery pack cannot be hooked; or, the battery pack is subjected to torque, so that the battery pack is deformed, cracked or even broken, the performance of the battery pack is affected, and even a safety accident of the vehicle can happen seriously. And, because locking mechanism is provided with a plurality of jack catchs originally, when with battery package locking or unblock, it is comparatively loaded down with trivial details when needing a plurality of jack catchs shrink simultaneously or separate and lead to the battery package to pass through locking mechanism and connect in battery package support, lead to electric vehicle long-consuming time and inefficiency when trading the electricity.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that in the prior art, a battery pack support is rigidly connected with an electric vehicle, and the connection between the battery pack and the battery pack support is affected by the vehicle body of the electric vehicle due to jolting and other reasons, so that a locking mechanism on the battery pack support is damaged and the battery pack cannot be hung; or drive battery package vibrations or deformation, and then influence the defect of the performance of battery package, provide a quick change support and contain its trade electric vehicle.

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

the utility model provides a quick-change support, includes the support body, the support body is equipped with the locking mechanical system who sets up along automobile body length direction interval at least, locking mechanical system is used for along vertical direction with bolt locking mode locking or unblock battery package, the support body pass through floating unit connect in the automobile body makes the support body is relative in vertical the automobile body can float.

This battery package support is used for trading electric vehicle, sets up the locking mechanism through bolt locking mode locking or unblock in order to articulate the battery package on the support body, can realize the battery package quick change through the simple structure, and because the bolt locking mode only need remove along vertical direction for the space utilization of quick change support is higher. Meanwhile, the battery pack support is connected to the electric vehicle in a floating mode, so that jolting or twisting and other forces borne by the electric vehicle are offset by the floating unit, and further the forces are reduced or even not transmitted to the battery pack, connection between the battery pack and the support body is prevented from being influenced, and reliability and stability of the locking mechanism in the using process are guaranteed. Meanwhile, torque transmission to the battery pack can be reduced, vibration or deformation of the battery pack is avoided, the use safety of the battery pack is improved, the battery pack is not prone to damage, on the basis, the service life of the battery pack is prolonged, and the economical efficiency is improved.

Preferably, the locking mechanism comprises a nut, and the nut is used for matching with a bolt on the battery pack and realizing the locking and unlocking of the battery pack and the bracket body in a bolt locking manner;

or the locking mechanism comprises a bolt, and the bolt is used for matching with a nut on the battery pack and realizing locking and unlocking of the battery pack and the bracket body in a bolt locking mode.

Among the above-mentioned technical scheme, realize the battery package through the cooperation between bolt and the nut and trade the bolt locking between the electric vehicle, the locking mode is simple and convenient, is favorable to improving locking efficiency.

Preferably, the bolt or the nut is floatingly connected to the bracket body.

Among the above-mentioned technical scheme, the connection of floating can reduce and trade the electric vehicle and receive to the support body turning to the moment of torsion or vibrations when warping or jolting, and then makes the support body receive the influence of moment of torsion or vibrations to reduce. Meanwhile, the floating connection of the bolt or the nut is matched with the floating unit, so that the locking mechanism can float along with the floating unit to avoid the damage of the locking mechanism.

Preferably, the structure of the bolt locking manner further comprises a rotation-preventing and retaining structure connected to the bolt and/or the nut to prevent relative rotational movement between the bolt and the nut.

According to the technical scheme, the anti-rotation retaining structure prevents the battery pack from being unlocked due to relative movement of the bolt and the nut after the battery pack is mounted on the quick-change support, and therefore the stability and the reliability of connection between the battery pack and the quick-change support are guaranteed.

Preferably, the bolt has a first end far away from the nut, and the anti-rotation retaining structure is sleeved on the outer peripheral side of the first end.

Among the above-mentioned technical scheme, prevent changeing the stopping structure cover and establish the one end of keeping away from the nut on the bolt, be convenient for rotate through the restriction bolt and make the bolt keep the locking state after with the nut locking, avoid bolt and nut to produce relative motion, make spatial layout reasonable simultaneously.

Preferably, the anti-rotation backstop structure comprises an inner gear ring and an outer gear ring, the inner gear ring is sleeved on the outer peripheral side of the outer gear ring, the first end is in key connection with the inner surface of the outer gear ring, and the outer gear ring has a first position and a second position;

when the outer gear ring is located at the first position, the inner peripheral surface of the inner gear ring is clamped with the outer peripheral surface of the outer gear ring;

when the outer gear ring is located at the second position, the outer gear ring is separated from the inner gear ring, and the outer gear ring is driven to drive the bolt to rotate so as to realize locking or unlocking with the nut.

In the technical scheme, the inner gear ring plays roles in connection and limiting; the outer gear ring moves to the second position to be separated from the inner gear ring, the outer gear ring located at the second position can rotate freely, the outer gear ring is driven to rotate with a bolt connected with the outer gear ring in a key mode, the bolt and the nut are locked or unlocked, after the locking or unlocking operation is completed, the outer gear ring returns to the first position from the second position, the outer gear ring and the inner gear ring are clamped at the moment, the position of the outer gear ring is fixed, the bolt cannot rotate, the structure is simple and reliable, the realization is convenient, and the quick disassembly and assembly of the battery pack are further realized.

Preferably, the anti-rotation retaining structure further includes a first elastic member sleeved on the outer peripheral side of the first end, two ends of the first elastic member respectively abut against the extending portion of the outer wall of the bolt and the outer gear ring, and the first elastic member is configured to apply an acting force to the outer gear ring, so that the outer gear ring is reset from the second position to the first position.

Among the above-mentioned technical scheme, when the outer ring gear to the direction removal that is close to the nut, first elastic component pressurized produces compression displacement, and after accomplishing the locking or the unblock of bolt and nut through the outer ring gear, under the elastic force effect of first elastic component, the outer ring gear resets to the primary importance and realizes the joint with the ring gear, the automated control of being convenient for, and the reliability is high.

Preferably, the vehicle body has a vehicle beam extending in a length direction of the vehicle body, the bracket body is located below the vehicle beam, and the floating unit is disposed above the bracket body.

Among the above-mentioned technical scheme, the support body be convenient for with the cooperation of battery package, guaranteed the connection stability of battery package, the unit that floats can reduce electric vehicle and receive the torsion moment or vibrations transmission to the support body when turning to the distortion or jolting, and then makes the support body receive the torsion moment or the influence of vibrations reduces, and the battery package does not occupy the upper portion space of automobile body to can reserve the space that more people carried the thing for electric vehicle.

Preferably, the floating unit includes a second elastic member, a connecting member and a limiting member, the connecting member is connected to the bracket body and the vehicle body respectively, one end of the connecting member is fixed to one of the bracket body and the vehicle body, the other end of the connecting member sequentially penetrates through the bracket body and the other of the vehicle body and the second elastic member, and an end of the other end of the connecting member is provided with the limiting member so that the second elastic member is limited to the bracket body or the vehicle body and between the limiting members.

Above-mentioned structure sets up, guarantees through second elastic component and connecting piece that the support body floats for the vertical of automobile body, improves the support body through the locating part and to the vertical unsteady stability of automobile body, avoids the support body to break away from the automobile body.

Preferably, a through hole is formed in a bottom plate of the vehicle beam for the connecting piece to movably penetrate through, the lower end of the second elastic piece abuts against the bottom plate, and the upper end of the second elastic piece abuts against the limiting piece.

Above-mentioned structure sets up, through locating the second elastic component between bottom plate and the locating part, avoids the effort that the automobile body received direct conduction to the support body on, and then avoids influencing being connected of support body and battery package, and simultaneously, the support body can float relatively in the within range between bottom plate and the locating part.

Preferably, the lateral part of car roof beam is equipped with the mounting panel, the mounting panel certainly the lateral part of car roof beam is outside horizontal extension, set up the through-hole on the mounting panel for the connecting piece movably wears to establish, the lower extreme of second elastic component support lean on in on the mounting panel, the upper end of second elastic component with the locating part butt.

Above-mentioned structure sets up, locates the lateral part of car roof beam through the mounting panel for floating the unit and being located the outside of car roof beam, avoid lining up the bottom plate of car roof beam in order to guarantee the intensity of car roof beam.

Preferably, the side portion of the vehicle beam is further provided with a fixing bracket, the fixing bracket is provided with a fixing portion fixed with the vehicle beam and a connecting portion, an accommodating area is formed between the connecting portion and the side portion of the vehicle beam and used for accommodating the mounting plate, and the mounting plate is fixed on the fixing bracket.

Above-mentioned structure sets up, and the mounting panel passes through the indirect fixation of fixed bolster on the car roof beam, and the outside of mounting panel is located to the fixed bolster cover simultaneously, plays the guard action to mounting panel and floating unit to fixed bolster and car roof beam fixed connection improve the connection stability of mounting panel with this.

Preferably, a cover plate is arranged above the fixing support, and the cover plate at least covers the accommodating area.

Above-mentioned structure sets up, sets up the apron and will hold the top in district and seal, further protects mounting panel and floating unit to realize dustproof or waterproof function.

Preferably, the floating unit further includes a limiting plate disposed between the second elastic member and the limiting member.

The structure is arranged, the contact area between the limiting part and the second elastic part is increased through the limiting plate, and the stress of the second elastic part is uniform when the body of the electric vehicle is stressed due to jolts and other reasons.

Preferably, there are a plurality of floating units, two adjacent floating units form a group of floating assemblies, and the floating units of the same group of floating assemblies are connected to the same limiting plate together.

Above-mentioned structure sets up, forms a set of floating assembly and a shared limiting plate through two floating units for floating assembly's compact structure improves the stability that support body and car roof beam are connected, and the same limiting plate of sharing can reduce the installation procedure, promotes the installation effectiveness.

Preferably, there are two car girders, and each car girder is provided with a plurality of floating assemblies arranged along the length of the car body at intervals so as to be connected with the bracket body.

Above-mentioned structure sets up, all sets up the subassembly that floats so that being connected of support body and vehicle is more firm through on two car roof beams.

A battery replacing vehicle comprises the quick-change bracket.

This trade electric vehicle, its automobile body and battery package are along vertical articulate and carry out the switching through the support body, realize the quick trade electricity of battery package, the battery package can vertically float relatively through the floating unit that sets up between support body and the automobile body, can make electric vehicle receive jolt or power such as distortion offset by floating unit, and then reduce or even no longer conduct to the battery package to this slows down electric vehicle and receives to turn to and twist or torsion moment of torsion or vibrations transmission to the battery package and then influence the condition of battery package performance when jolting.

Preferably, the battery replacement vehicle is an electric truck.

Among the above-mentioned technical scheme, electric truck's battery package is bulky, weight is heavy for in use runs into the road conditions of jolting, changes the connection that influences between battery package and the battery package support and electric truck makes the moment of torsion when self distorts because of loading the goods bigger, and is bigger to the influence of battery package promptly. A battery pack holder with floating units is therefore used to mitigate the impact on the battery pack and the connection between the battery pack and the battery pack holder.

The utility model discloses an actively advance the effect and lie in: the utility model discloses a quick change support sets up the locking mechanism through bolt locking mode locking or unblock on the support body in order to articulate the battery package for the quick change can be realized to the battery package. Mode switching battery package through battery package support, realize changing the electricity fast of battery package, can follow vertical relative floating through floating the unit between the support body of battery package support and the automobile body, can make electric vehicle receive jolt or power such as distortion offset by floating the unit, and then reduce and no longer conduct to battery package even, with this slow down the automobile body in the distortion or go under jolting the road conditions the increase in torque that the automobile body receives or the harm that vibrations direct transfer brought to battery package, the safety in utilization of battery package has been improved, and the battery package is difficult impaired, on this basis, the life of battery package increases, the economic nature has been improved.

Drawings

Fig. 1 is a schematic structural diagram of an electric vehicle according to an embodiment of the present invention.

Fig. 2 is a partially enlarged view of a portion C in fig. 1.

Fig. 3 is a schematic structural diagram of a vehicle body, a quick-change bracket, and a battery pack according to an embodiment of the present invention.

Fig. 4 is a schematic view of a partial structure of a vehicle body according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a bracket body according to an embodiment of the present invention.

Fig. 6 is a partial enlarged view of a floating unit according to an embodiment of the present invention.

Fig. 7 is a schematic view of a position relationship of a bracket body according to an embodiment of the present invention.

Fig. 8 is an exploded view of a bolt locking structure according to an embodiment of the present invention.

Fig. 9 is a schematic structural view of the inner gear ring, the outer gear ring and the connecting portion of the bolt locking structure according to an embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a bolt locking structure according to an embodiment of the present invention in a state where the inner gear ring and the outer gear ring are engaged with each other.

Fig. 11 is a cross-sectional view of the bolt locking structure according to an embodiment of the present invention, in a state where the inner ring gear and the outer ring gear are engaged with each other.

Description of reference numerals:

electric vehicle 100

Battery pack 10

Locking piece 11

Vehicle beam 20

Longitudinal direction A of the beam

Vehicle width direction B

Bracket body 30

Locking mechanism 40

Bolt 41

Threaded segment 411

Spline section 412

First elastic member 42

Outer casing 43

Inner gear ring 44

Inner teeth 441

Inner flange 442

Outer gear ring 45

External tooth 451

Outer flange 452

Connection mechanism 46

Inner vertical slot 461

Outer vertical slot 462

Embedded flange 463

Nut 47

Floating unit 50

Second elastic member 1

Connecting piece 2

Stopper 3

Mounting plate 4

Fixed support 5

Fixed part 51

Connecting part 52

Receiving area 53

Cover plate 54

Limiting plate 6

Floating assembly 7

Detailed Description

The present invention is further illustrated by way of the following examples, which are not intended to limit the scope of the invention.

Example 1

The utility model provides a quick-change support can be used to concrete structure such as the electric vehicle 100 that fig. 1 shows, electric vehicle 100 has two car beams 20 along fore-and-aft direction parallel arrangement for connect electric vehicle 100's essential elements, for example hang, wheel etc, electric vehicle's battery package 10 is also installed in the below of these two car beams 20 so that can follow electric vehicle 100's below and carry out the quick replacement of battery package 10 to it, make the change of battery package 10 more convenient. In the present embodiment, electric powered vehicle 100 is a heavy truck or a light truck, but may be applied to a vehicle model of a passenger vehicle such as a car. The quick-change bracket of the embodiment is specifically structured as shown in fig. 1, fig. 5 and fig. 7, and includes a bracket body 30 connected to two vehicle beams 20 of an electric vehicle 100, the bracket body 30 is a frame structure formed by welding profiles, a plurality of locking mechanisms 40 are arranged on the bracket body 30 at intervals at least along the length direction of the vehicle body, and each locking mechanism 40 is used for locking and unlocking the battery pack in a bolt locking manner along the vertical direction, so that the battery pack can be quickly mounted on the electric vehicle 100 or dismounted from the electric vehicle 100. Specifically, the mounting position of the locking mechanism 40 may be on the upper surface or the lower surface of the side wall of the longitudinal beam of the bracket body 30, so that the battery pack 10 can move in the vertical direction to lock and unlock the locking mechanism 40, and thus the battery pack 10 is connected or disconnected with respect to the bracket body 30, and the purpose of replacing the battery is achieved. In this embodiment, the quick change of the battery pack can be realized through the simple structure of the bolt locking mode, and the space utilization rate of the quick change bracket is higher because the bolt locking mode only needs to move along the vertical direction. For the material of the bracket body 30, other materials, such as a plate material and a square tube, can be selected according to actual requirements, and are not limited to the profile.

Meanwhile, a floating unit 50 is arranged between the bracket body 30 and the car beam 20 along the vertical direction, the floating unit 50 is used for transferring the bracket body 30 to the car beam 20, the floating unit 50 can float along the vertical direction, when the electric vehicle 100 runs on a road with poor road conditions, jolts are caused, or a steering angle is large, so that the car beam 20 is greatly distorted, vibration or torque can be generated, the floating unit 50 is arranged on the car beam 20, so that the battery pack 10 can float vertically relative to the car beam 20, forces such as jolts or distortion and the like are counteracted when the electric vehicle is subjected to, and further the transmission to the battery pack 10 is reduced or even avoided, the connection between the battery pack 10 and the battery pack bracket is avoided being influenced, and the reliability and the stability of the locking mechanism 40 in the using process are ensured. Meanwhile, torque transmission to the battery pack 10 can be reduced to avoid vibration or deformation of the battery pack 10, so that the use safety of the battery pack 10 is improved, the battery pack 10 is not easy to damage, and the service life of the battery pack 10 is prolonged on the basis.

Here, as shown in fig. 2, the floating unit 50 is disposed above the bracket body 30 to be connected with the vehicle body 20 such that the bracket body 30 is located below the vehicle body 20. The battery pack 10 is disposed below the bracket body 30, so that the battery changing device (not shown) can detach and mount the battery pack 10 from below the electric vehicle, that is, lock or unlock the battery pack 10 with respect to the locking mechanism 40 of the bracket body 30, thereby achieving the picking and placing and transferring of the battery pack 10. Meanwhile, the space below the vehicle body frame 20 can be fully utilized, and the space above the vehicle body frame 20 is used for carrying cargo and the like, so that the space on the electric vehicle 100 is more reasonably utilized.

In other embodiments, the bracket body 30 may be disposed above the vehicle body 20, and the floating unit 50 may be disposed below the bracket body 30 to be coupled to the vehicle body 20.

For other electric vehicles 100 without a vehicle beam, the bracket body 30 may be directly connected to the vehicle body or other parts of the vehicle body through the floating unit 50, so that the bracket body 30 is vertically floatable with respect to the vehicle body.

As shown in fig. 2, 3, and 5, in the present embodiment, a plurality of rows of locking mechanisms 40 are disposed on the bracket body 30, and each row of locking mechanisms 40 is disposed at intervals along the length direction of the bracket body 30 and symmetrically located at two sides of the bracket body 30 along the length direction. In some embodiments, only two rows may be provided on the stent body 30, one on each side of the stent body 30; alternatively, four rows, two on either side of the stent body 30, are provided. The locking mechanisms 40 are arranged on two sides of the bracket body 30 at multiple points, so that the connection reliability and stability of the battery pack 10 relative to the bracket body 30 and the vehicle beam 20 can be improved.

As shown in fig. 5, in the present embodiment, the bolt locking structure includes a locking mechanism 40 and a locking member 11, the locking mechanism 40 includes a nut 47, the nut 47 is fixed on the bracket body 30, and the nut 47 has an internal thread inside. The locking member 11 is provided on the battery pack 10 and is adapted to cooperate with the locking mechanism 40. Corresponding to the nut 47 of the locking mechanism 40, the locking member 11 includes a bolt 41, the bolt 41 having a first end remote from the nut 47 and connected to the battery pack 10 and a second end facing the nut 47, and an externally threaded section 411 at the second end of the bolt 41 to engage with the nut 47.

In order to minimize the influence of the steering torque and the pitching of the electric vehicle 100 during the traveling of the vehicle, the nut 47 is provided to be floatingly coupled to the bracket body 30, for example, the nut 47 is coupled to the bracket body 30 by a spring.

Of course, the top surface of the nut 47 may also be welded to the lower end surface of the bracket body 30, so as to improve the stability of the nut 47 connected to the bracket body 30. An adapter, such as a plate, may be further disposed between the nut 47 and the bracket body 30, so that a contact area between the nut 47 and the bracket body 30 is increased by the adapter, and stability of the nut 47 after being connected to the bracket body 30 is improved.

In other embodiments, the mounting positions of the nut 47 and the bolt 41 may be interchanged, that is, the bolt 41 is disposed on the bracket body 30 and the nut 47 is disposed on the battery pack 10. Also, the bolt 41 may be floatingly coupled to the bracket body 30. As shown in fig. 8, the locking member 11 of the present embodiment further includes a rotation-preventing structure connected to the bolt 41 to prevent relative rotational movement between the bolt 41 and the nut 47. The anti-rotation retaining structure prevents the bolt 41 and the nut 47 from moving relatively to unlock after the battery pack 10 is mounted on the quick-change bracket, thereby ensuring the stability and reliability of the connection between the battery pack 10 and the quick-change bracket. In another embodiment, anti-rotation backstop structure is attached to nut 47 to prevent relative rotational movement between bolt 41 and nut 47, or alternatively, anti-rotation backstop structure is attached to both bolt 41 and nut 47.

The anti-rotation retaining structure is sleeved on the outer peripheral side of the first end, so that the bolt 41 can be conveniently rotated through the limitation of the bolt 41 to keep a locking state after being locked with the nut 47, the relative movement between the bolt 41 and the nut 47 is avoided, and meanwhile, the space layout is reasonable.

As shown in fig. 8 to 11, in the present embodiment, the anti-rotation and anti-backing mechanism includes an outer ring gear 45 and an inner ring gear 44 sleeved on an outer peripheral side of the outer ring gear 45, the outer ring gear 45 is connected to the first end of the bolt 41, an outer peripheral surface of the outer ring gear 45 is provided with outer teeth 451, and an inner peripheral surface of the inner ring gear 44 is provided with inner teeth 441. The outer gear 45 has a first position and a second position relative to the inner gear 44, and when the outer gear 45 is in the first position, that is, the outer gear 45 enters the inner gear 44, the outer teeth 451 on the outer peripheral surface of the outer gear 45 and the inner teeth 441 on the inner peripheral surface of the inner gear 44 are engaged, so that the circumferential movement of the outer gear 45 is limited and the outer gear 45 cannot rotate. When the outer gear ring 45 is at the second position, the outer gear ring 45 is separated from the inner gear ring 44, so that the outer gear ring 45 can move circumferentially, and the outer gear ring 45 is driven to drive the bolt 41 to rotate so as to lock or unlock the nut 47.

Further, the outer ring gear 45 is provided with a coupling mechanism 46 to be coupled with the bolt 41. In the present embodiment, the connecting mechanism 46 includes an inner vertical slot 461 disposed on the inner peripheral side of the outer ring gear 45, and correspondingly, the first end of the bolt 41 is provided with a spline section 412, and the spline section 412 can be engaged with the inner vertical slot 461, so that the bolt 41 moves together with the outer ring gear 45. In one embodiment, the coupling mechanism 46 is provided with a fitting flange 463, the outer ring gear 45 is provided with an outer flange 452 into which the fitting flange 463 is fitted, and the coupling mechanism 46 is further provided with an outer vertical groove 462 which engages with the inner peripheral surface of the outer ring gear 45, so that the coupling mechanism 46 and the outer ring gear 45 are formed integrally. In this embodiment, the inner gear ring 44 limits the outer gear ring 45, so that the bolt 41 is limited, and is further used for limiting the relative rotation of the bolt 41 and the nut 47, thereby preventing the bolt 41 and the nut 47 from being unlocked by relative movement after the battery pack 10 is mounted on the quick-change bracket, and further ensuring the stability and reliability of the connection between the battery pack 10 and the quick-change bracket.

In this embodiment, the inner ring gear 44 is further provided with an inner flange 442 for abutting against an outer flange 452 of the outer ring gear 45 for axial limitation.

In another embodiment, the anti-rotation retaining structure further includes a first elastic element 42, the first elastic element 42 is a spring, the first elastic element 42 is sleeved on an outer peripheral side of the first end of the bolt 41, and two ends of the first elastic element 42 respectively abut against the extending portion of the outer wall of the bolt 41 and the outer gear ring 45. When the outer gear ring 45 moves towards the direction close to the nut 47, the first elastic piece 42 is pressed to generate compression displacement, and after the locking or unlocking of the bolt 41 and the nut 47 is completed through the outer gear ring 45, the outer gear ring 45 resets to the first position and is clamped with the inner gear ring 44 under the action of the elastic force of the first elastic piece 42, so that the automatic control is facilitated, and the reliability is high.

In another embodiment, in order to improve the safety and the service life of the locking member 11, the locking member 11 further includes a housing 43, and the first end of the bolt 41 (including the first elastic member 42, the spline section 412) and the external ring gear 45 are wrapped therein.

When the locking mechanism 40 and the locking member 11 of the present embodiment are unlocked, a professional tool is used to push the whole of the outer ring gear 45 and the connecting mechanism 46, so that the whole of the outer ring gear 45 and the connecting mechanism 46 moves to the second position and moves in a direction away from the inner ring gear 44, so that the outer ring gear 45 located at the second position is disengaged from the inner ring gear 44, and then the whole of the outer ring gear 45 and the connecting mechanism 46 is rotated to drive the bolt 41 to rotate relative to the nut 47 until the bolt 41 is disengaged from the nut 47, so as to unlock the battery pack 10 and the electric vehicle 100, and the first elastic member 42 drives the outer ring gear 45, the connecting mechanism 46 and the bolt 41 to retract.

Similarly, when the locking mechanism 40 and the locking member 11 need to be locked, a professional tool is used to push the whole of the outer gear ring 45 and the connecting mechanism 46, so that the whole of the outer gear ring 45 and the connecting mechanism 46 moves in a direction away from the inner gear ring 44, the outer gear ring 45 is separated from the inner gear ring 44, and then the whole of the outer gear ring 45 and the connecting mechanism 46 is rotated to drive the bolt 41 to rotate relative to the nut 47 until the locking torque of the bolt 41 and the nut 47 is met, so that the bolt 41 and the nut 47 are locked; removing the tool, the first elastic element 42 will drive the outer gear ring 45, the connecting mechanism 46 and the bolt 41 to retract, so that the outer gear ring 45 is driven from the second position to the first position and is engaged with the inner gear ring 44, and the outer flange 452 of the outer gear ring 45 abuts against the inner flange 442 of the inner gear ring 44 to limit the rotation and axial movement of the bolt 41; if the outer gear ring 45 cannot engage the inner gear ring 44, the outer gear ring 45 can be rotated slightly to engage the inner gear ring 44.

The floating unit 50 has a specific structure including a second elastic member 1, a connecting member 2 and a limiting member 3, wherein the connecting member 2 is respectively connected to the bracket body 30 and the car beam 20, one end of the connecting member 2 is fixedly connected to the bracket body 30, the other end of the connecting member 2 sequentially penetrates through the car beam 20 and the second elastic member 1, and the limiting member 3 is disposed at the end of the other end of the connecting member 2. The radial section size of the limiting piece 3 is larger than the section size of the second elastic piece 1 in the same direction, and the upper end and the lower end of the second elastic piece 1 are abutted to the upper surface of the vehicle beam 20 and the lower surface of the limiting piece 3 so as to prevent the second elastic piece 1 from being separated from the connecting piece 2, so that the support body 30 can float relative to the vehicle beam 20 along the vertical direction through the floating unit 50, and vibration or torque of the vehicle beam 20 is reduced to be transmitted to the support body 30 and transmitted to the battery pack 10 through the support body 30; meanwhile, the stability of the support body 30 to the vertical floating of the vehicle body is improved through the limiting pieces 3, and the support body 30 is prevented from being separated from the vehicle body.

In another embodiment of this embodiment, one end of the connecting member 2 is fixed to the vehicle beam 20, the other end of the connecting member 2 sequentially passes through the bracket body 30 and the second elastic member 1, and the end of the other end of the connecting member 2 is also provided with the limiting member 3, so that the elastic member is limited between the bracket body 30 and the limiting member 3.

Since the battery pack 10 used in the electric vehicle 100, especially an electric truck, is bulky and heavy, and is attached to the body member 20 only by the floating unit 50, the load-bearing capacity of the floating unit 50 is required to be high. In this embodiment, the second elastic member 1 is a rectangular spring with a spring coefficient of 510Nm/mm, and the rectangular spring has a large bearing capacity, so that the bearing requirement on the battery pack 10 can be met; secondly, the rectangular spring has a strong fatigue resistance, and can meet the requirement of high-frequency elastic deformation of the rectangular spring caused by high-frequency turning jolt and the like in the use process after the battery pack 10 is installed on the electric vehicle 100.

In this embodiment, the connecting member 2 is a connecting rod extending vertically, a limiting member 3 is integrally formed at one end of the connecting rod, and the radial cross-sectional dimension of the limiting member 3 is larger than that of the rectangular spring, so that the connecting rod and the rectangular spring can be prevented from being separated from each other, and the two are matched to realize that the bracket body 30 floats relative to the vehicle beam 20. In other embodiments, the limiting member 3 may be additionally disposed and fixed at one end of the connecting rod.

In a preferred embodiment, the car beam 20 is a hollow structure or a U-shaped structure, and the connecting member 2 can only penetrate through the bottom plate of the car beam 20 located below, so that the second elastic member 1 can abut between the upper surface of the bottom plate of the car beam 20 and the limiting member 3 to achieve limiting and floating. Specifically, the vehicle beam 20 has a bottom plate extending along the horizontal direction, the bottom plate of the vehicle beam 20 is provided with a through hole for the connecting member 2 to movably penetrate through, one end of the connecting member 2 is fixed on the bracket body 30, the other end of the connecting member 2 penetrates through the through hole, and the upper end and the lower end of the second elastic member 1 respectively abut against the upper surface of the bottom plate and the lower surface of the limiting member 3, so that the bracket body 30 can vertically float relative to the vehicle beam 20 through the floating unit 50. Through directly set up the through hole on the bottom plate of car roof beam 20 and supply connecting piece 2 to wear to establish for automobile body end simple structure need not to install extra accessory and realizes being connected with support body 30.

In another preferred embodiment, as shown in fig. 2, 3 and 4, a mounting plate 4 is disposed on a side portion of the car beam 20, the mounting plate 4 is a rectangular plate, the mounting plate 4 is welded to the car beam 20, and one end of the mounting plate 4 horizontally extends outward from the side portion of the car beam 20, a through hole is disposed in the mounting plate 4 along a vertical direction, the connecting member 2 is inserted into the through hole, and a lower end of the second elastic member 1 is located on an upper surface of the mounting portion 4, that is, the mounting portion 4 is engaged with the second elastic member 1 and the connecting member 2 to support the bracket body 30, and an upper end of the second elastic member 1 abuts against a lower surface of the limiting member 3, so that the second elastic member 1 is limited between the mounting plate 4 and the limiting member 3, the connecting member 2 is prevented from being separated from the second elastic member 1 by the limiting member 3, and further prevented from being separated from the mounting plate 4, so as to ensure that the bracket body 30 and the car beam 20 can float vertically by the floating unit 50, on this basis, the mounting plate 4 is mounted on the side portion of the car beam 20, so that a bottom plate of the car beam 20 is not damaged without being perforated, thereby ensuring structural strength of the car beam 20.

In another preferred embodiment, as shown in fig. 3, 4 and 6, the side portion of the car beam 20 is provided with a fixing bracket 5, the fixing bracket 5 is a "U" shaped member, two ends of the "U" shaped member have fixing portions 51 fixed with the car beam 20 and a connecting portion 52 connected between the two fixing portions 51, the fixing portions 51 extend along the length direction a of the car beam 20 and are attached to the side portion of the car beam 20, and the fixing portions 51 are connected with the car beam 20 by bolts, so as to improve the connection stability of the fixing bracket 5 and the car beam 20 and facilitate maintenance and replacement, in other embodiments, other fixing methods such as welding may be adopted. The connecting portion 52 is a U-shaped bottom portion of the U-shaped member and is integrally formed with the fixing portions 51 at both ends of the U-shaped member, and a receiving area 53 is formed between the connecting portion 52 and the side portion of the vehicle body frame 20. The receiving area 53 is provided with a mounting plate 4, in this embodiment, the mounting plate 4 may not be directly fixed on the vehicle beam 20, and the mounting plate 4 is indirectly fixed on the side of the vehicle beam 20 by being fixed on the connecting portion 52. Due to the structural arrangement, the mounting plate 4 is indirectly and detachably arranged on the vehicle beam 20 through the fixing bracket 5, so that the mounting plate is convenient to maintain and replace under the condition of damage; and the fixing bracket 5 can protect the mounting plate 4 by covering the connecting part 52 on the outer side of the mounting plate 4. Meanwhile, the second elastic part 1, the connecting part 2 and the limiting part 3 are all located in the containing area 53, the containing area 53 provides a space to ensure that the floating unit 50 can float vertically and can prevent dust, sewage or sundries from entering the floating unit 50 along the horizontal direction, so that the situation that the floating unit 50 is located on the outer side of the vehicle beam 20 and can be corroded by the dust or the sundries in the outdoor environment is avoided, the floating unit 50 is ensured, particularly the second elastic part 1 can normally work, and the bracket body 30 is flexibly connected with the vehicle beam 20 to replace the bracket body 30 to be rigidly connected with the vehicle beam 20.

In other embodiments, the end of the mounting plate 4 close to the vehicle beam is fixed to the vehicle beam 20, and the end far away from the vehicle beam 20 is fixedly connected to the inner wall of the accommodating area 53 of the fixing bracket 5, that is, the mounting plate 4 extends to the inner wall of the accommodating area 53 toward the outside of the vehicle beam 20, that is, one end of the mounting plate 4 is fixedly connected to the vehicle beam 20, and the other end of the mounting plate 4 is connected to the vehicle beam 20 through the fixing portion 51 of the fixing bracket 5, so as to avoid that the mounting plate 4 is a cantilever structure with one end stressed, thereby improving the bearing capacity of the mounting plate 4, and on this basis, the capacity of the battery pack 10 hooked on the bracket body 30 can be correspondingly increased, which is not described in more detail.

Further, the top of fixed bolster 5 is equipped with apron 54, apron 54 sets up along the horizontal direction, the top that the lid was located accommodation area 53 is connected with the outside of car beam 20 and the laminating of fixed bolster 5 respectively so that accommodation area 53's upper end is sealed through apron 54, accommodation area 53's lower extreme is sealed through mounting panel 4, thereby improve accommodation area 53's leakproofness, and through apron 54 along vertical prevention dust, sewage or debris entering accommodation area 53, avoid second elastic component 1 to be blocked by debris and can't be along vertical rebound motion, it can normally work to have guaranteed floating unit 50, and prevent that sewage from corroding second elastic component 1 and make the life of second elastic component 1 shorten, the economic nature of floating unit 50 in the in-service use process has been improved. In a specific implementation, the cover plate 54 has a size not smaller than the size of the receiving area 53 to cover at least the receiving area 53.

In this embodiment, the floating unit 50 further includes a limiting plate 6, the limiting plate 6 is a plate structure arranged in a horizontal direction, a circular hole is formed in the limiting plate 6, the connecting piece 2 penetrates through the circular hole, and the circular hole of the limiting plate 6 is smaller than the radial cross section of the limiting piece 3 to prevent the limiting plate 6 from being separated. The limiting member 3 is located above the limiting plate 6, and the limiting plate 6 is located between the limiting member 3 and the second elastic member 1, that is, the upper end of the second elastic member 1 abuts against the lower surface of the limiting plate 6, and the lower end of the second elastic member 1 abuts against the upper surface of the mounting plate 4, so that the contact area between the limiting plate 6 and the upper end of the second elastic member 1 is increased, and the stress of the second elastic member 1 is uniform when the body of the electric vehicle 100 is stressed due to jolts and other reasons. Meanwhile, the contact area is increased, so that the upward elastic force applied by the second elastic part 1 can be diffused to the limiting plate 6, that is, the limiting performance of the second elastic part 1 is increased through the limiting plate 6, so that the floating unit 50 is firmer, and the reusability of the floating unit 50 is improved.

Meanwhile, in order to improve the influence of the torque or the vibration of the car beam 20 on the bracket body 30 and the battery pack 10, the floating units 50 in this embodiment are provided in plurality, two adjacent floating units 50 are arranged side by side and form a group of floating assemblies 7, further, two locating parts 3 exist in the two floating units 50, two second elastic parts 1 and two connecting parts 2, two through holes arranged side by side are formed in the mounting plate 4 corresponding to the floating assemblies 7, the floating assemblies 7 are correspondingly accommodated in the accommodating areas 53, and the same as the mounting plate 4, the floating units 50 of the same group of floating assemblies 7 are jointly connected to the same limiting plate 6, two round holes arranged side by side are formed in the same limiting plate 6 so as to facilitate the penetration of the connecting parts 2, so that the problem of inconvenient installation caused by independently arranging the mounting plate 4 and the limiting plate 6 for the two floating units 50 of the same group of floating assemblies 7 and independently arranging the fixed bracket 5 and the cover plate 54 for dust prevention can be solved, and the same limiting plate 6 can reduce the installation steps and improve the installation efficiency of the floating units 50.

It can be understood that, by increasing the floating units 50, the stress on the bracket body 30 is more uniform, and increasing the number of the floating units 50 reduces the torque or vibration of the car beam 20 to be transmitted to the bracket body 30 and then to the battery pack 10, thereby improving the stability and reliability of the bracket body 30 in hooking the battery pack 10.

In this embodiment, there are two car beams 20, each car beam 20 is provided with a plurality of floating assemblies 7, for example, 5 floating assemblies 7, which are arranged along the length direction a of the car beam 20 at intervals, and of course, other numbers of floating assemblies 7 may be selected, which aims to improve the connection stability between the bracket body 30 and the car beam 20 and to reduce the vibration or torque transmission of the car beam 20 to the bracket body 30 on the basis of the battery pack 10 being connected through the bracket body 30.

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 can 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 utility model provides a quick-change support, its characterized in that includes the support body, the support body is equipped with the locking mechanism who sets up along automobile body length direction interval at least, locking mechanism is used for along vertical direction with bolt locking mode locking or unblock battery package, the support body pass through floating unit connect in the automobile body makes the support body is relative in vertical the automobile body can float.

2. The quick-change bracket according to claim 1, wherein the locking mechanism includes a nut for engaging with a bolt on the battery pack and locking and unlocking the battery pack and the bracket body by the bolt locking manner;

or the locking mechanism comprises a bolt, and the bolt is used for being matched with a nut on the battery pack and realizing the locking and unlocking of the battery pack and the bracket body in a bolt locking mode.

3. The quick-change holder according to claim 2, characterized in that the bolt or the nut is floatingly connected to the holder body.

4. The quick-change holder according to claim 2, wherein the bolt-locking arrangement further includes an anti-rotation backstop structure connected to the bolt and/or the nut for preventing relative rotational movement between the bolt and the nut.

5. The quick-change holder according to claim 4, wherein the bolt has a first end remote from the nut, and the anti-rotation retaining structure is sleeved on an outer peripheral side of the first end.

6. The quick-change bracket according to claim 5, wherein the anti-rotation and anti-backing structure comprises an inner gear ring and an outer gear ring, the inner gear ring is sleeved on the outer peripheral side of the outer gear ring, the first end is in key connection with the inner surface of the outer gear ring, and the outer gear ring has a first position and a second position;

7. The quick-change bracket according to claim 6, wherein the anti-rotation and anti-backing structure further comprises a first elastic member sleeved on the outer periphery of the first end, two ends of the first elastic member respectively abut against the extension part of the outer wall of the bolt and the outer gear ring, and the first elastic member is used for applying a force to the outer gear ring to restore the outer gear ring from the second position to the first position.

8. The quick-change holder according to any one of claims 1 to 7, characterized in that the body has a vehicle beam extending in the longitudinal direction of the body, the holder body being located below the vehicle beam, the floating unit being arranged above the holder body.

9. The quick-change bracket according to claim 8, wherein the floating unit comprises a second elastic member, a connecting member and a limiting member, the connecting member is respectively connected with the bracket body and the vehicle body, one end of the connecting member is fixed to one of the bracket body and the vehicle body, the other end of the connecting member is sequentially inserted through the other of the bracket body and the vehicle body and the second elastic member, and the end of the other end of the connecting member is provided with the limiting member so that the second elastic member is limited between the bracket body or the vehicle body and the limiting member.

10. The quick-change bracket according to claim 9, wherein the bottom plate of the vehicle beam is provided with a through hole for the movable insertion of the connecting member, the lower end of the second elastic member abuts against the bottom plate, and the upper end of the second elastic member abuts against the limiting member.

11. The quick-change bracket according to claim 9, wherein a mounting plate is provided at a side portion of the vehicle beam, the mounting plate horizontally extends outward from the side portion of the vehicle beam, a through hole is provided in the mounting plate for the connecting member to movably pass through, a lower end of the second elastic member abuts against the mounting plate, and an upper end of the second elastic member abuts against the limiting member.

12. The quick-change bracket according to claim 11, wherein the side portion of the vehicle beam is further provided with a fixing bracket, the fixing bracket is provided with a fixing portion fixed with the vehicle beam and a connecting portion, a receiving area is formed between the connecting portion and the side portion of the vehicle beam for receiving the mounting plate, and the mounting plate is fixed on the fixing bracket.

13. The quick-change holder according to claim 12, characterized in that a cover plate is provided above the fixing holder, which cover plate covers at least the receiving region.

14. The quick-change holder according to claim 9, wherein the floating unit further comprises a limiting plate disposed between the second elastic member and the limiting member.

15. The quick-change holder according to claim 14, wherein the floating units are plural, two adjacent floating units form a group of floating assemblies, and the floating units of the same group of floating assemblies are commonly connected to the same limiting plate.

16. The quick-change carrier according to claim 15, wherein there are two of said vehicle beams, and a plurality of said float assemblies are provided on each of said vehicle beams at spaced intervals along the length of said vehicle body for attachment to said carrier body.

17. A battery replacement vehicle, characterized in that it comprises a quick-change cradle according to any one of claims 1 to 16.

18. The battery replacement vehicle of claim 17, wherein the battery replacement vehicle is an electric truck.