CN115332708A

CN115332708A - Locking mechanism and vehicle

Info

Publication number: CN115332708A
Application number: CN202211070919.9A
Authority: CN
Inventors: 王洋; 董金国; 马孝祥; 龙双; 王一戎; 蒋泽鹏
Original assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely New Energy Commercial Vehicle Group Co Ltd; Zhejiang Remote Commercial Vehicle R&D Co Ltd
Current assignee: Zhejiang Geely Holding Group Co Ltd; Zhejiang Geely New Energy Commercial Vehicle Group Co Ltd; Zhejiang Remote Commercial Vehicle R&D Co Ltd
Priority date: 2022-08-31
Filing date: 2022-08-31
Publication date: 2022-11-11

Abstract

The invention discloses a locking mechanism and a vehicle, wherein the locking mechanism comprises a fixed rod and a sleeve joint, the fixed rod comprises a rod head part for rotating a tool and a rod body part connected with the rod head part, the rod body part comprises a first connecting part and a first guiding part which are sequentially arranged along the extending direction of the rod body part, and the first guiding part is positioned at the free end of the rod body part; the socket joint has the installing port that supplies body of rod portion to wear to establish, and the inner wall of socket joint is equipped with second guide part and second connecting portion along wearing to establish the direction in proper order, and installing port department is located to the second guide part, and the dead lever wears to establish socket joint from the installing port, and first guide part and second guide part cooperate, make first connecting portion and second connecting portion be counterpointed and connect in order fixed socket joint and dead lever. The technical scheme of the invention can realize quick guiding and combining of the fixed rod and the sleeve joint, has simple structure, higher compatibility and convenient installation, and can improve the locking efficiency.

Description

Locking mechanism and vehicle

Technical Field

The invention relates to the technical field of vehicle battery replacement, in particular to a locking mechanism and a vehicle.

Background

At present, in a conventional installation mode of replacing batteries: generally, the positioning device comprises a fixed rod and a sleeve joint, wherein the fixed rod and the sleeve joint are vertically penetrated and then are fixedly connected through a first connecting part and a second connecting part of the fixed rod, the first connecting part and the second connecting part can be in threaded fit, clamping fit and the like, and in the sleeve joint process of the fixed rod and the sleeve joint, because the machining error or the alignment precision is low, the alignment is often carried out by spending process time in the installation process; even the tip of dead lever can set up the chamfer for a bit, still can not avoid the concentricity to easily take place the deviation get the problem, especially on the screw-thread fit scheme, when the contact meshing of screw thread at first knot, the two concentricity easily takes place the deviation get the problem and can not be solved. Therefore, there is a need for a locking mechanism with simple structure and convenient locking to improve the battery replacement and unlocking efficiency of the power battery

Disclosure of Invention

The invention mainly aims to provide a locking mechanism which can realize quick correction and combination of a fixed rod and a sleeve joint, has a simple structure, higher compatibility and convenience in installation and can improve locking efficiency.

To achieve the above object, the present invention provides a locking mechanism for connecting two workpieces to be fixed, including:

the fixing rod comprises a rod head part and a rod body part, wherein the rod head part is used for rotating a tool, the rod body part is connected with the rod head part, the rod body part comprises a first connecting part and a first guiding part which are sequentially arranged along the extending direction of the rod body part, and the first guiding part is positioned at the free end of the rod body part; and

the socket joint is provided with an installation port for the rod body to penetrate, a second guide portion and a second connecting portion are sequentially arranged on the inner wall of the socket joint along the penetrating direction, the second guide portion is arranged at the installation port, the fixed rod penetrates through the installation port, the first guide portion is matched with the second guide portion, and the first connecting portion and the second connecting portion are oppositely connected to be fixed.

Optionally, the locking mechanism further includes a stopper, the rod body includes an upper rod portion near the free end of the rod body, a middle rod portion near the middle of the rod body, and a lower rod portion near the rod head, the stopper is movably disposed on the lower rod portion and is stopped by the rod head and the first connecting portion, and the stopper is configured to be fixed to one of the two workpieces to be fixed.

Optionally, the stopper is configured as a gasket, and an aperture of the through opening of the gasket is smaller than an outer diameter of the first connecting portion.

Optionally, the locking mechanism further includes a limiting member, the limiting member is sleeved outside the sleeve joint, the limiting member is used to be fixed to the other of the two workpieces to be fixed, and the limiting member limits an axial displacement range of the sleeve joint.

Optionally, the limiting part comprises a limiting section and mounting lugs located on two sides of the limiting section, the limiting section is provided with a limiting through opening through which the sleeve joint passes, the mounting opening of the sleeve joint is provided with a skirt edge extending along the periphery of the mounting opening, and the bottom edge of the limiting through opening is stopped by the skirt edge.

Optionally, a step is formed between the mounting lug and the limiting section, the height distance between the limiting section and the to-be-fixed part is a displacement range, and the displacement range is 3mm-4mm.

Optionally, a limiting structure is arranged between the limiting part and the sleeve joint, the limiting structure includes a limiting portion located at the limiting through opening and a stopper portion located on the outer surface of the sleeve joint, and the limiting portion and the stopper portion are in clearance fit to limit rotation of the sleeve joint relative to the limiting part along the circumferential direction.

Optionally, the first connection portion is configured as an external thread and the second connection portion is configured as an internal thread.

Optionally, the length of the external thread is greater than the length of the internal thread.

Optionally, the first guide portion is configured as a tapered guide surface and the second guide portion is configured as a guide groove.

Optionally, the rod head is provided with a flanged edge, the flanged edge having an outer diameter greater than the outer diameter of the rod head.

The invention also provides the application of the locking mechanism, which is used for fixing the battery frame.

The invention also provides a vehicle which comprises a battery frame, two lateral connecting mechanisms and the locking mechanism, wherein the battery frame is fixed between the two lateral connecting mechanisms, and the battery frame and the lateral connecting mechanisms are locked or separated through the locking mechanism.

According to the technical scheme, the fixing rod and the sleeve joint are adopted, the fixing rod comprises a rod head part for rotating a tool and a rod body part connected with the rod head part, the rod body part comprises a first connecting part and a first guiding part which are sequentially arranged along the extending direction of the rod body part, and the first guiding part is positioned at the free end of the rod body part; the socket joint is provided with an installation opening for the rod body to penetrate, a second guide portion and a second connecting portion are sequentially arranged on the inner wall of the socket joint along the penetrating direction, the second guide portion is arranged at the installation opening, the fixed rod penetrates through the installation opening, the first guide portion is matched with the second guide portion, and the first connecting portion and the second connecting portion are oppositely connected to fix the socket joint and the fixed rod. Through first guide part and the cooperation of second guide part for after the dead lever wears to establish and cup joints, the double guidance of first guide part and second guide part makes the pole somatic part with cup joint the homocentric that can be better, has promoted locking mechanism's the concentricity of adjusting well, the cooperation of the follow-up first connecting portion of being convenient for and second connecting portion from this also is favorable to realizing locking mechanism's automation mechanized operation, improves and trades electric efficiency.

Drawings

In order to more clearly illustrate the embodiments or technical solutions of the present invention, the drawings used in the embodiments or technical solutions of the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

FIG. 1 is a schematic structural view of one embodiment of a frame assembly of the present invention;

FIG. 2 is a schematic structural diagram of one embodiment of the battery frame of FIG. 1;

FIG. 3 is a schematic structural view of one embodiment of the frame body of FIG. 2;

FIG. 4 is a schematic structural diagram of an embodiment of the bezel limiting member shown in FIG. 2;

FIG. 5 is a schematic view of an embodiment of the lateral connecting device of FIG. 1;

FIG. 6 is a schematic structural view of an embodiment of the lateral arm of FIG. 5;

FIG. 7 is a schematic view of an embodiment of the support beam assembly of FIG. 5;

FIG. 8 is a schematic structural view of an embodiment of the beam body of FIG. 7;

FIG. 9 is a schematic structural view of one embodiment of the locking mechanism of FIG. 1;

FIG. 10 is a cross-sectional view of the locking mechanism of FIG. 9;

FIG. 11 is a schematic structural view of another embodiment of the locking mechanism of FIG. 1;

FIG. 12 is a cross-sectional view of the locking mechanism of FIG. 11;

FIG. 13 is a schematic structural view of an embodiment of the fixing rod of FIG. 11;

fig. 14 is a schematic structural view of an embodiment of the coupling head of fig. 11.

The reference numbers illustrate:

the implementation, functional features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that all directional indicators (such as up, down, left, right, front, back \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components, the motion situation, etc. in a specific posture (as shown in the attached drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

New energy vehicles are developed rapidly in these years as development strategies of the nation. At present, the electric direction of the heavy commercial vehicle is concentrated on two circuits of pure electricity and battery replacement. The battery replacement mode is a quick power supplement mode for the new energy vehicle. The new energy vehicle battery replacement mode refers to the mode that a large number of batteries are stored, charged and distributed in a centralized manner by using a centralized battery replacement station, and the batteries of the new energy vehicle are replaced in a battery distribution station.

The power swapping line solves the anxiety of customers on the endurance mileage through the matching of the power swapping station as a gas station. However, for heavy commercial vehicles, the back battery replacement is mainly adopted at present, namely, power batteries are arranged in a stacked manner in the space above a vehicle frame behind a cab of the heavy commercial vehicle to realize the battery replacement function, the back battery replacement has high gravity center and large mass, so that the climbing capability of the vehicle is weakened, and the maximum speed of the vehicle is reduced; the volume of the back battery occupies the space of the container, so that the amount of goods carried by a customer is reduced and the operation capacity and the income are reduced on the premise that the length of the whole vehicle meets the regulations; for medium and long-distance freight transportation of which the freight transportation is sensitive to the volume, the contradiction of the economical efficiency is obvious, and the competitiveness of the configured vehicle type is greatly reduced.

To this end, the invention proposes a vehicle. The vehicle adopts the mode that the power battery is arranged on the opposite side of the frame, and the battery replacement of the power battery is realized.

The following describes a vehicle according to the present invention.

Referring to fig. 1, in an embodiment of the present invention, a vehicle includes a frame assembly 1000, the frame assembly 1000 includes a frame 100, a battery frame 200, two lateral connecting devices 300 and a locking mechanism, the battery frame 200 has a receiving space 211 for placing a power battery; the two lateral connecting devices 300 are arranged at intervals along the length direction of the vehicle frame 100, and the two lateral connecting devices 300 are matched with each other to respectively define a mounting position at two opposite sides of the vehicle frame 100, and one mounting position is used for placing one battery frame 200; a locking mechanism for connecting the lateral connecting device 300 and the battery frame 200, the locking mechanism having a locked state and a separated state, in the locked state, the battery frame 200 being fixed at the installation position; in the separated state, the battery frame 200 may be separated from the mounting position.

The power battery is accommodated by the battery frame 200 and fixed to the battery frame 200 to form an integral module. The battery frames 200 are symmetrically arranged at two sides of the whole vehicle frame 100; when the battery needs to be replaced, the unlocking and locking mechanism separates the battery frame 200 from the lateral connecting device 300, double-pack battery replacement is realized, so that vehicle-electricity separation can be independently realized, and the battery replacement efficiency is improved.

At present, heavy commercial car generally adopts the back formula on trading the circuit line, utilizes between the driver's cabin rear of heavy commercial car and the packing box promptly, and the space above frame 100 arranges power battery, realizes trading the electric function. However, the volume of the back battery occupies the space of the container, so that the amount of goods carried by a customer is reduced and the operation capacity and the income are reduced on the premise that the length of the whole vehicle conforms to the regulations; for medium and long-distance freight transportation of which the freight transportation is sensitive to the volume, the contradiction of the economical efficiency is obvious, and the competitiveness of the configured vehicle type is greatly reduced. This scheme is at battery frame 200 symmetrical arrangement in whole car frame 100 both sides, arranges power battery and constitutes a whole module at battery frame 200, can improve the volume of carrying cargo of heavy commercial car, improves the operation ability and the profit of heavy commercial car, improves the competitiveness.

On the other hand, the heavy commercial vehicle with the power batteries arranged in the back type has the advantages that the requirement of the electric quantity for the energy consumption of a heavy truck can be met, the single full-electricity endurance mileage of the whole vehicle is short, the power batteries are arranged in a stacked mode for improvement, the gravity center of the power batteries is high, the overturning moment and the tilting moment of the front, the back, the left and the right are increased rapidly due to the large mass of the power batteries, the rollover risk of the whole vehicle is increased greatly, and the driving safety is seriously affected. Meanwhile, if the power battery topples forwards, the cab is also at the risk of being squashed, and the safety of drivers and passengers is affected. Moreover, the gravity center of the rear back-exchanging battery is high, the synchronous adhesion coefficient is small, the vehicle braking performance is poor, the situation of braking and nodding occurs, the driving comfort is influenced, and the worst situation is caused. Due to the fatal defects, generally, the arrangement of back battery replacement only arranges a single power battery, so that the single full-electricity endurance mileage of the whole vehicle is shorter relative to the requirement of heavy-duty truck energy consumption.

According to the scheme, the battery frames 200 are symmetrically arranged on two sides of the whole vehicle frame 100, and the power batteries are arranged on the battery frames 200 to form an integral module, so that on one hand, the phenomenon that the back of a user occupies the space of a container of the whole vehicle due to replacement of electricity is eliminated, the cargo carrying capacity of the heavy commercial vehicle can be improved, the operation capacity and the profit of the heavy commercial vehicle are improved, and the competitiveness is improved; on the other hand, the gravity center height of the power battery is reduced; power batteries can be arranged through the battery frames 200 independently arranged on the two sides of the frame 100 of the heavy truck commercial vehicle, so that the problems of safety, performance and the like caused by high gravity center of back battery replacement are solved, the problem that the crowded endurance mileage of the back battery replacement is short is solved, the anxiety of customers on the endurance mileage is solved, the operation capacity and the income are improved, and the competitiveness is improved.

In the prior art, the power battery is arranged at the bottom of the frame 100, so that the gravity center of the power battery is reduced, and the cargo capacity is improved. And the power battery is arranged at the bottom, so that in the process of replacing the power battery, the space is limited, the replacement difficulty is high, the battery replacement efficiency is low, the cost of corresponding matched equipment is high, and the economic benefit is low.

In the pure electric mode, a scheme that a power battery is placed on the side of the frame 100 is provided, but the charging technology and facilities are limited, the charging time is long, the operation requirements of customers cannot be met, and the commercial popularization is difficult and serious; in some battery replacement modes, the power battery is disposed on the side of the frame 100, but in these schemes, the power battery frame 200 hung on the side is mainly fixedly connected, and the battery frame 200 is directly hung on two sides of the frame 100, so that after the power battery is placed on the battery frame 200, a large bending moment is generated on the frame 100, which affects the structural stability of the frame 100 and the bearing reliability of the battery frame 200. In addition, the power battery can be replaced only by detaching the power battery from the battery frame 200 at each time, the power battery is troublesome to mount and difficult to detach, so that the time for assembling and replacing is greatly wasted, and the power battery and the battery frame 200 are troublesome to mount and difficult to detach, so that the time for replacing the power battery is increased, the power replacement efficiency is low, the scheme is difficult to realize by falling to the ground, the operation steps are multiple, the operation is complicated, the processes requiring manual intervention are multiple, the labor cost is high, and the corresponding automatic supporting equipment is high in design difficulty, high in cost and low in economic benefit.

According to the scheme, the battery frames 200 are symmetrically arranged on two sides of the whole vehicle frame 100, the power batteries are arranged on the battery frames 200 to form an independent integral module, the torque generated by the battery frames 200 on the vehicle frame 100 is reduced through the two lateral connecting devices 300, the structural stability of the vehicle frame 100 and the bearing reliability of a battery mounting frame are improved, the battery frames 200 are fixed on the lateral connecting devices 300 through the locking mechanisms, when the batteries are replaced, only the locking mechanisms need to be unlocked, then a new battery frame 200 and a module formed by the power batteries are replaced with the integral module formed by the battery frames 200 and the power batteries, and then the locking mechanisms are locked and fixed. The battery frames 200 on the left side and the right side are independently arranged, so that the battery frames can be replaced simultaneously, and can also be replaced respectively as required, the battery replacement efficiency is greatly improved, the steps are few, and the automation is facilitated. So can settle power battery through the battery frame 200 of 100 both sides independent settings of frame at heavily blocking commercial car, improve the continuation of the journey mileage, solved the customer and anxious to the continuation of the journey mileage, improve operation ability and income, improve the competitiveness.

In a scenario, if a vehicle finds that a battery module is in failure or needs to be supplemented due to power shortage in a driving process, the battery module can be replaced at a battery replacement station, wherein the battery module comprises a battery frame and a power battery installed in the battery frame.

The battery replacing process of the whole vehicle at the battery replacing station comprises the following steps: the battery replacement station comprises a battery loading and unloading unit, a battery storage unit and a vehicle bearing platform, wherein the vehicle bearing platform receives a parking signal of the vehicle; firstly, a vehicle passes through sensors such as an image sensor and a radar sensor, and receives a parking signal of the vehicle by a vehicle bearing platform after the vehicle parks in place on the vehicle bearing platform of a power station; then, information interaction is achieved between the vehicle and the vehicle bearing platform through the battery replacement controller, specifically, the vehicle bearing platform and the vehicle perform information interaction, whether the vehicle meets a preset condition or not is judged, whether the vehicle meets the preset condition or not is judged, whether the vehicle has the basic work of battery replacement or not is judged, whether the vehicle is powered off or not, whether the vehicle is parked in place or not is judged, whether the information of the vehicle is matched with the vehicle information preset in the battery replacement station or not is judged, and the like. The vehicle carrying platform confirms that the vehicle can carry out the battery replacement operation and sends a battery replacement command; the battery replacement station performs a battery replacement operation on the vehicle, wherein the battery replacement operation comprises: the battery loading and unloading unit receives a battery replacement operation instruction and unlocks a locking mechanism of a battery module of the vehicle in the power shortage state; battery loading and unloading units are uniformly arranged on two sides of the vehicle bearing platform, and the battery loading and unloading units of the battery replacing station unlock a locking mechanism of the vehicle through a mechanical arm; the battery loading and unloading unit starts to lift the battery module to be replaced through the mechanical arm to be separated from the vehicle, and the battery loading and unloading unit conveys the battery module with insufficient power to the battery storage unit; the separated battery module is placed into a battery storage unit of a battery replacement station through a transportation device for electric quantity supplement; secondly, the battery assembling and disassembling unit takes the fully charged battery module from the battery storage unit and installs the fully charged battery module on the installation position of the vehicle; the battery loading and unloading unit is used for installing a battery module which is fully charged or fully charged on an installation position of the vehicle through a mechanical arm; the battery assembling and disassembling unit starts to lift the fully charged battery module to be placed on a mounting position where the vehicle unloads the battery module, namely the mounting position limited by the two lateral connecting devices 300, the connector in the battery module is butted, finally, the battery assembling and disassembling unit locks the locking mechanism to fix the battery module on the mounting position, and the battery assembling and disassembling unit of the battery replacing station locks the locking mechanism through a mechanical arm to fix the battery module on the mounting position. And the locking mechanism finishes locking, and a sensor on the vehicle feeds back to the battery replacement controller to finish battery replacement. The vehicle can be started by the whole vehicle and is driven out of the power exchanging station.

The scheme is introduced above, the vehicle-electricity separation is realized through the battery frame 200, the lateral connecting device 300 and the locking mechanism, the double-pack quick battery replacement can be realized, and the battery replacement efficiency is improved. The specific structure of the vehicle frame assembly 1000 will be described mainly by way of example, and specifically, the structure of the battery frame 200, the lateral connecting device 300, the locking mechanism, and the connection relationship therebetween will be described first.

Referring to fig. 2 to 4, first, a specific structure of the battery frame 200 will be described:

this scheme installs the power battery of heavy commercial car in frame 100's side, and for the convenience and the security of power battery's installation, the battery replacement efficiency and the duration that improve heavy commercial car have been done as follows to battery frame 200 to the improvement.

The battery frame 200 includes:

a bezel limiting member 290;

the frame body 210, the frame body 210 has an accommodating space 211, and the bezel limiting member 290 is detachably connected to an opening of the frame body 210; and

the middle support 250 is detachably arranged in the frame body 210, the accommodating space 211 is divided into a first accommodating cavity 212 and a second accommodating cavity 213 by the middle support 250, and the first accommodating cavity 212 and the second accommodating cavity 213 are used for accommodating power batteries.

The bezel limiting element 290 limits the opening of the frame body 210, and the bezel limiting element 290 may be a plate member, a frame member, or the like, such as a plurality of connecting plates that cross the opening of the frame body 210 and are connected to the frame body 210, or an upper cover that covers the opening of the frame body 210.

The bezel limiting member 290 and the frame body 210 can be detachable by a bolt connection, a latch connection, or a snap connection. In this embodiment, the opening of the accommodating space 211 of the frame body 210 faces upward, and because the power battery is heavy, the power battery can be easily installed by hanging people from above during installation, and the tool is convenient to use. In other embodiments, the opening of the receiving space 211 of the frame body 210 may face other directions, and the power battery and the frame body 210 may be replaced as a whole after the power battery is installed in the frame body 210.

The middle support 250 is detachably disposed in the frame body 210, and the middle support 250 may be connected by a fastener, such as a bolt. The middle support 250 divides the accommodating space 211 into a first accommodating cavity 212 and a second accommodating cavity 213, and the first accommodating cavity 212 and the second accommodating cavity 213 are used for accommodating a power battery.

In an embodiment, the middle supporter 250 may be divided from the middle of the receiving space 211 in a length direction to form a first receiving chamber 212 and a second receiving chamber 213.

In another embodiment, the middle supporter 250 may be separated from the middle of the receiving space 211 in a height direction, forming the first receiving chamber 212 and the second receiving chamber 213.

Middle part support piece 250 will accommodation space 211 is separated and is formed first chamber 212 and the second chamber 213 that holds, first chamber 212 that holds with the second holds chamber 213 and all is used for placing power battery, improves continuation of the journey mileage, is located and fixes through dismantling to be connected between first power battery's that holds chamber 212 casing and the frame main part 210, is located the second and holds chamber 213's power battery and arranges in middle part support piece 250 to can dismantle with middle part support piece 250 and be connected, in order to guarantee power battery's stability, avoid rocking, frame mouth locating part 290 and frame main part 210 can dismantle the connection, so that power battery puts into, and guarantee power battery's safety. The detachable connection mode can be a scheme with low cost and stable fixation such as a bolt or a bolt, and can also be a scheme of fixing by utilizing a structure such as a buckle.

It should be understood that the battery frame 200 is not limited to be used in the side battery replacement mode, and the battery frame 200 may be used in a vehicle with a power battery disposed on the side, so as to facilitate the subsequent battery replacement process. Or, battery frame 200 is used in the vehicle that power battery arranged in the back, through battery frame 200's setting, can avoid the range upon range of risk of empting that brings of back formula battery, improves the duration of a commercial car. Or, the battery frame 200 may be used in a vehicle with a power battery disposed at the bottom of the vehicle frame 100, so as to improve the bearing capacity of the battery frame 200 and ensure the safety of the power battery.

The battery frame 200 is characterized in that a frame opening limiting piece 290, a frame main body 210 and a middle supporting piece 250 are adopted, the frame main body 210 is provided with an accommodating space 211, the middle supporting piece 250 is detachably arranged in the frame main body 210, the accommodating space 211 is divided into a first accommodating cavity 212 and a second accommodating cavity 213 by the middle supporting piece 250, the first accommodating cavity 212 and the second accommodating cavity 213 are both used for accommodating power batteries, the frame opening limiting piece 290 is detachably connected to an opening of the frame main body 210, the power batteries with large volume and large weight can be stably and safely installed on the light truck frame 100, the accommodating space 211 of the frame main body 210 is divided into the first accommodating cavity 212 and the second accommodating cavity 213 by the middle supporting piece 250, the two power batteries are arranged in the first accommodating cavity 212 and the second accommodating cavity 213, and the power batteries and the battery frame 200 are connected into a whole, the battery frame 200 can bear the heavy and large power batteries, the installation stability of the power batteries is ensured, the stability of the vehicle is ensured, and the stability of the vehicle is also kept in the driving process, and the endurance capacity of the commercial vehicle can be improved.

Further, interference with the cargo box is avoided, which affects the installation of the cargo box, and the highest point of the battery frame 200 does not exceed the highest point of the longitudinal beams 110 of the vehicle frame 100.

Specifically, in an embodiment, in order to ensure a stable structure of the frame body 210 and facilitate support of the power battery, the frame body 210 includes a lower bottom frame 220 and a plurality of side frames 230, the lower bottom frame 220 is fixed to the plurality of side frames 230, a middle beam 240 is disposed at a middle position of the side frames 230 in a height direction, and the middle support 250 is detachably disposed on the middle beam 240 to define the accommodating space 211 into the first accommodating cavity 212 and the second accommodating cavity 213.

The middle position of the side frame 230 along the height direction is provided with a middle beam 240, the middle beam 240 divides the accommodating space 211 into a first accommodating cavity 212 and a second accommodating cavity 213, and the middle beam 240 is arranged to reinforce the strength of the frame main body 210 and facilitate the installation of the middle support 250, and the middle support 250 and the frame main body 210 support the power battery in the second accommodating cavity 213.

In order to further enhance the structural stability of the frame body 210, a reinforcing structure 260 is disposed in the lower bottom frame 220 and at least one of the side frames 230.

Specifically, in the present embodiment, the reinforcing structure 260 has a structure like a Chinese character 'mi'.

In other embodiments, the reinforcing structures 260 can be in other forms, such as vertical arrangement, horizontal arrangement, and the like along the length direction, or vertical arrangement, horizontal arrangement, and the like along the height direction.

Specifically, in the present embodiment, the side frames 230 include a front side frame 231, a rear side frame 232, a left side frame 233, and a right side frame 234, the front side frame 231 and the rear side frame 232 are symmetrically disposed, and the left side frame 233 and the right side frame 234 are symmetrically disposed. Taking the installation on the side of the frame 100 as an example, the frame 100 is connected to form a front side frame 231, and the rear side frame 232 is opposite to the front side frame 231; the direction toward the vehicle head is a left side frame 233, and the right side frame 234 is opposite to the left side frame 233. A plurality of reinforcing beams connected to each other are provided in the lower bottom frame 220, the front side frame 231, and the rear side frame 232. The plurality of reinforcing beams form a structure of a cross in the lower bottom frame 220, the front side frame 231, and the rear side frame 232, thereby reinforcing the strength of the frame body 210.

Other arrangements of reinforcing beams are possible, and in one embodiment, a plurality of longitudinally extending reinforcing beams may be connected to a single transversely extending reinforcing beam in the bottom frame 220. In another embodiment, the lower frame 220 may have a plurality of transversely extending reinforcing beams connected to a longitudinally extending reinforcing beam.

In addition, the arrangement of the front side frame 231 and the rear side frame 232 and the lower bottom frame 220 can be the same or different, and the same arrangement is convenient for processing.

Specifically, in this embodiment, in order to further improve the structural stability of the frame main body 210, the battery frame 200 further includes a plurality of support beams 271, the side frame 230 includes a front side frame 231, a rear side frame 232, a left side frame 233 and a right side frame 234, and the lower bottom frame 220, the front side frame 231 and the rear side frame 232 are all provided with a plurality of support beams 271 distributed at intervals along the length direction of the battery frame 200.

Specifically, in order to reduce the frame weight, the lateral surface of the support beam 271 is U-shaped. Without loss of generality, in other embodiments, the support beam 271 may be the same as the reinforcement beam, the same as the main beam of the frame body 210, or the like.

In the present embodiment, both ends of the support beam 271 extend in the height direction, and three support beams 271 are arranged at intervals in the length direction between the front side frame 231, the rear side frame 232, and the bottom frame. The middle support 250 is mounted at the intersection of the support beam 271 and the middle beam 240.

In other embodiments, there may be two or more of the support beams 271.

Specifically, in order to secure the stability of the structure, the front side frame 231, the lower base frame 220, the rear side frame 232, the left side frame 233, and the right side frame 234 are fixed by welding.

Further, in an embodiment, in order to ensure the structural stability of the front side frame 231, the bottom frame 220, the rear side frame 232, and the left side frame 233, an oblique reinforcing beam is disposed at an inner corner of the front side frame 231, the bottom frame 220, the rear side frame 232, and the left side frame 233, and the oblique reinforcing beam forms a triangle with the inner corner of the front side frame 231, the bottom frame 220, the rear side frame 232, and the left side frame 233. The strength of the frame structure is ensured by the arrangement of the oblique reinforcing beam, and the bearing capacity of the frame main body 210 is improved.

Specifically, in order to ensure the stability of the battery frame 200 in lateral fixing, the battery frame 200 further includes a plurality of supporting posts 272 extending in the height direction, and the plurality of supporting posts 272 are disposed at intervals in the width direction of the frame main body 210 on the left side frame 233 and the right side frame 234. In the present embodiment, four support columns 272 are provided, and four support columns 272 are provided in the left side frame 233 and the right side frame 234 and form a grid structure with the central beam 240. In one embodiment, the number of support posts 272 can be other; in another embodiment, the left side frame 233 and the right side frame 234 are not limited by the width, and the supporting posts 272 may not be provided, but may be provided in the same manner as the front side frame 231 and the rear side frame 232, which is convenient for processing and has a stable structure.

Further, in order to ensure the structural strength of the corner joints of the front side frame 231, the bottom frame 220, the rear side frame 232, and the left side frame 233, in this embodiment, the frame main body 210 further includes a corner wrapping member 273, and the corner wrapping member 273 is disposed at the corner of the frame main body 210. The frame body 210 is subjected to corner wrapping treatment through the corner wrapping piece 273, so that the strength of the joint of the front side frame 231, the lower bottom frame 220, the rear side frame 232, the left side frame 233 and the right side frame 234 fixed by welding is ensured, the corner wrapping piece 273 and the frame body 210 can be fixed by riveting or welding, and the material of the corner wrapping piece 273 can be the same as that of the frame body 210, such as steel and the like. For strength and weight reduction, the bezel-limiting member 290 and the frame body 210 may be made of aluminum alloy.

Further, in order to facilitate the installation of the connector and the electrical connection, in an embodiment, an accessory frame 280 is disposed on one side of the frame main body 210 in the length direction, and the accessory frame 280 is used for installing accessories of the power battery.

Specifically, in the present embodiment, the accessory frame 280 includes a first sub-frame 281, a second sub-frame 282 and a third sub-frame 283, which are spaced apart along the length direction of the frame body 210, wherein the first sub-frame 281 is used for mounting the high voltage control box, the second sub-frame 282 is used for mounting the water connector, and the third sub-frame 283 is used for mounting the electrical connector.

In other embodiments, the first, second, and

third subframes

281, 282, and 283 may be integrally formed.

In particular, the first subframe 281 is used for mounting a high voltage distribution box; when the frame body 210 is connected to the side members 110 of the vehicle frame 100, the front side frame 231 is close to the side members 110 of the vehicle frame 100, and the first sub-frame 281 is located below the vehicle frame 100 and between the side members 110 of the two vehicle frames 100. The high-voltage Distribution box is called PDU (Power Distribution Unit) for short, and the high-voltage Power supply Distribution Unit in the high-voltage system solution of the new energy vehicle. The high-voltage components are electrically connected through the busbar and the wire harness, so that the functions of charging and discharging control, high-voltage component electrifying control, circuit overload short circuit protection, high-voltage sampling, low-voltage control and the like are provided for a high-voltage system of the new energy automobile, and the operation of the high-voltage system is protected and monitored. PDU also can integrate functions such as BMS master control, the module of charging, DC module, PTC control module, compares more whole car functional module with traditional PDU, integrates more in the function, and structural more complicated has heat radiation structure such as water-cooling or forced air cooling. The PDU configuration is flexible, can customize and develop according to customer's requirement, can satisfy different customer different motorcycle type demands.

In one embodiment, the frame body 210 has a space 211 for accommodating power cells therein, the first sub-frame 281 is open above the space, and the high voltage distribution box is inserted into the first sub-frame 281 through the opening, and the frame body 210 and the first sub-frame 281 are both frame structures, so that the wiring connection between the power cells and the high voltage distribution box is facilitated. The first sub-frame 281 is located at the position of the first receiving cavity 212 of the front side frame 231 such that, when the frame body 210 is placed at the side of the side members 110 of the vehicle frame 100, the first sub-frame 281 is located between the side members 110 of the two vehicle frames 100, thereby making reasonable use of the space of the vehicle frame 100 and ensuring the stability of the center of gravity.

In other embodiments, the first sub-frame 281 may also be disposed on a side of the main body frame connected to the lateral connection device 300, and compared with a side near the frame 100, during the battery replacement process, the weight on the two sides is unbalanced, which may also affect the installation and removal processes; or, the vehicle frame is arranged on the side far away from the vehicle frame 100, so that the size of the outer side of the vehicle is increased, the appearance is not attractive, and hidden dangers are caused.

Specifically, the first subframe 281 is located between the second subframe 282 and the third subframe 283, and the first subframe 281 is larger than the second subframe 282 and the third subframe 283; the first sub-frame 281 is larger than the second sub-frame 282 and the third sub-frame 283, the second sub-frame 282 being used for mounting one of a water connector or an electrical connector, the other being mounted to the third sub-frame 283. The water connector and the electric connector are used as power battery connectors, the main function of the electric connector is to help the electric connector to transmit current, and the main function of the water connector is to exchange heat. When the power battery connector works, the safety and reliability of the power battery connector are the most important, and the safety and reliability are the key parts for ensuring the normal operation of a power system of an electric automobile. In one embodiment, the second sub-frame 282 and the third sub-frame 283 are both open at the top with respect to the first sub-frame 281 for easy installation, and in other embodiments, the first sub-frame 281, the second sub-frame 282 and the third sub-frame 283 may be open in other directions. In addition, the first sub-frame 281, the second sub-frame 282 and the third sub-frame 283 are arranged to be opened upwards, the first sub-frame 281, the second sub-frame 282 and the third sub-frame 283 are arranged below the vehicle frames 100 and between the longitudinal beams 110 of the two vehicle frames 100, and a cargo box is arranged above the longitudinal beams 110 to shield the opening, so that the safety of the water connector, the electric connector and the high-voltage distribution box can be ensured.

The battery frame 200 is a double-layer rectangular frame structure, and as described above, after the power battery is installed in the frame body 210, the power battery in the first accommodating cavity 212 is fixed to the lower bottom frame 220 by the bolts, and if a second power battery needs to be installed, the middle support 250 needs to be installed to the position of the middle beam 240, and the second power battery needs to be placed on the middle support 250.

In one embodiment, the middle support 250 may be a unitary arrangement, such as a unitary rectangular frame.

In other embodiments, the mid-support 250 may be provided as a separate body, such as a bar, post, etc. disposed along the length or width of the frame body 210.

In this embodiment, for the convenience of installation and the stability of support, the middle support 250 includes a plurality of sub-support frames, the plurality of sub-support frames are disposed on the middle beam 240 at intervals, the middle beam 240 is disposed around the frame body 210, and the plurality of sub-support frames are detachably connected to the middle beam 240.

Specifically, the sub-supporting frame is in an "L" shape, the sub-supporting frame is connected with the middle beam 240 through bolts, three sub-supporting frames are respectively arranged on the front side frame 231 and the rear side frame 232, two sub-supporting frames are respectively arranged on the left side frame 233 and the right side frame 234, and the sub-supporting frames are arranged at the intersection positions of the supporting beam 271 and the middle beam 240 on the front side frame 231 and the rear side frame 232. And mounting holes 722 for fixing power battery bolts are reserved on each supporting bracket, so that the upper-layer power battery is convenient to mount. The accommodating space 211 is divided into a first accommodating cavity 212 and a second accommodating cavity 213 by the arrangement of the plurality of sub-supporting frames, and the second power battery is arranged on the plurality of sub-supporting frames, so as to ensure the stability of the second power battery, and is connected with the frame main body 210 through the frame opening limiting member 290 to ensure the stability of the power battery of the accommodating space 211.

In one embodiment, the bezel limiting member 290 is an integral directional frame, and corresponds to the lower bottom frame 220 to cover the upper opening of the frame body 210.

In other embodiments, the bezel stoppers 290 may also be a plurality of connecting beams extending along the length direction of the frame main body 210 and spaced apart along the width direction of the frame main body 210.

In one embodiment, the bezel limiting member 290 includes a bezel body and a plurality of connecting beams disposed in the bezel body, wherein the connecting beams are disposed at intervals along the length direction of the frame main body 210 and extend along the width direction of the frame main body 210. In another embodiment, the bezel limiting member 290 is formed by a plurality of connecting beams, two ends of each connecting beam are respectively provided with a sub-supporting frame, the frame beam at the opening of the frame body 210 is provided with a mounting hole 722, and the sub-supporting frames are fixed at the beam of the frame body 210 by bolts, so as to fix the connecting beams. In the present embodiment, the connecting beam corresponds to the sub-supporting frame on the middle beam 240, that is, three bezel position-limiting members 290 are disposed along the length direction of the frame main body 210, and in other embodiments, the number of the bezel position-limiting members 290 may be other. Through the arrangement of the frame opening limiting part 290, the frame main body 210 and the middle supporting part 250, a plurality of power batteries can be conveniently installed, the power batteries can be protected, the power batteries can be conveniently replaced, and the battery frame 200 can meet the installation requirements of various battery replacement schemes, such as back battery replacement, side battery replacement, chassis battery replacement and the like. Because the power battery that heavy commercial car carried all possesses characteristics bulky, that weight is heavy, the battery frame 200 stable in structure that this scheme provided, intensity is high, can guarantee power battery's safety.

Referring to fig. 2 to 6, next, a specific structure of the lateral connection device 300 and how the battery frame 200 is fixed on both sides of the vehicle frame 100 by the lateral connection device 300 to achieve quick battery replacement will be described.

To facilitate the installation of the battery frame 200, the lateral connection device 300 includes:

a support beam assembly 700; and

the two ends of the support beam assembly 700 are respectively provided with one of the lateral connection mechanisms 400, one part of the lateral connection mechanism 400 is connected with the vehicle frame 100, the other part of the lateral connection mechanism 400 is connected with the support beam assembly 700, and the part of the support beam assembly 700 connected with the lateral connection mechanism 400 is positioned below the vehicle frame 100.

The lateral connecting device 300 can buffer the moment transmitted from the outermost side of the power battery to the bottom of the lateral arm 600 due to gravity, so as to ensure the stability of the support, one part of the lateral connecting mechanism 400 is connected with the longitudinal beam 110 of the frame 100, the other part of the lateral connecting mechanism is connected with the support beam assembly 700, two ends of the support beam assembly 700 are respectively connected with the lateral connecting mechanism 400, and the vibration impact force transmitted from the power battery boxes on two sides to the lateral connecting mechanism 400 and the rotation bending moment inertia force around the X axis can be partially buffered by the support beam assembly 700, so as to ensure that the lateral connecting mechanism 400 is not broken due to excessive instantaneous stress, and simultaneously restrain the bending displacement of the lateral connecting mechanisms 400 on two sides, further reduce the shaking amplitude of the power battery boxes, and reduce the deformation of the frame 100.

Specifically, referring to fig. 5 and 6, the lateral connection mechanism 400 includes:

a mounting member 500 for coupling with the battery frame 200; and

a lateral arm 600 including a connecting section 610 extending along a length direction of the frame 100 and a supporting section 620 extending along a width direction of the frame 100, wherein the connecting section 610 and the supporting section 620 are fixed, and the connecting section 610 is used for connecting with the longitudinal beam 110 of the frame 100; a pre-positioning structure 630 and a fixing structure 640 are arranged between the supporting section 620 and the mounting member 500, and after the mounting member 500 is pre-positioned on the supporting section 620 through the pre-positioning structure 630, the mounting member is connected and fixed with the supporting section 620 through the fixing structure 640.

In an embodiment, the four lateral connection mechanisms 400 can be used for mounting the battery frames 200 with different sizes on the lateral sides of the vehicle frame 100, the longitudinal beams 110 of the vehicle frame 100 are respectively provided with two lateral arms 600, the lateral arms 600 can be connected by fasteners or can be fixed by welding, the battery frames 200 can be the battery frames 200 as described above or other battery frames 200, the distance between the two lateral arms 600 on the same side can be adjusted on the longitudinal beams 110 according to the size of the battery frames 200, the two mounting members 500 are respectively mounted at two ends of one battery frame 200, and the fixation of the battery frames 200 is realized through the pre-positioning structures 630 and the fixing structures 640 between the mounting members 500 and the lateral arms 600. Lateral connecting mechanism 400 is convenient for fix battery frame 200 in the side of frame 100, guarantees fixed stability, and the convenience and the security of the installation of being convenient for trade simultaneously can adapt to the battery frame 200 of different size sizes, and is fixed more firm, and the commonality is also stronger.

In one embodiment, in order to reduce the moment generated by the battery frame 200 to the vehicle frame 100 and improve the structural stability of the vehicle frame 100 and the load-bearing reliability of the battery mounting rack, the connecting sections 610 of the two lateral arms 600 located at the two opposite sides of the vehicle frame 100 are partially connected to the vehicle frame 100, and the other part is connected by the support beam assembly 700, that is, the two ends of the support beam assembly 700 are respectively connected to one lateral arm 600, and the support beam assembly 700 is located below the vehicle frame 100, so that the moment generated at the outermost side of the power battery is dispersed by the support beam assembly 700, thereby reducing the influence of the power battery on the structure of the vehicle frame 100 and improving the structural stability of the vehicle frame 100. Here, support beam assembly 700 may be different from support beam assembly 700, and the detailed structure of support beam assembly 700 will be described later and will not be described further herein.

In another embodiment, the mounting member 500 of the lateral connecting mechanism 400 may be integrally provided with the battery frame 200, the lateral connecting mechanism 400 includes only the lateral arm 600, and the lateral connecting device 300 includes a support beam assembly 700 and two lateral arms 600 provided at both ends of the support beam assembly 700.

The lateral arm 600 may be a rod, post, or other shape. The mounting members 500 are fixedly mounted at opposite sides of the battery frame 200 in a welding, riveting or other fixed connection combination.

By adopting the mounting piece 500 and the lateral arm 600, power batteries with different sizes can be mounted on the side of the vehicle through the battery frame 200, and the mounting piece 500 is used for being connected with the battery frame 200; the lateral arm 600 comprises a connecting section 610 extending along the length direction of the vehicle frame 100 and a supporting section 620 extending along the width direction of the vehicle frame 100, wherein the connecting section 610 and the supporting section 620 are fixed, and the connecting section 610 is used for being connected with the longitudinal beam 110 of the vehicle frame 100; a pre-positioning structure 630 and a fixing structure 640 are arranged between the supporting section 620 and the mounting member 500, and after the mounting member 500 is pre-positioned on the supporting section 620 through the pre-positioning structure 630, the mounting member is connected and fixed with the supporting section 620 through the fixing structure 640. Through installing a installed part 500 respectively in a battery frame 200's both sides, install two lateral arm 600 at longeron 110 of frame 100, two installed parts 500 fix a battery frame 200 on two lateral arm 600 for power battery and its battery frame 200 can carry out the side and arrange, and the distance between two lateral arm 600 is adjustable in order to adapt to the not battery frame 200 of equidimension, thereby the not power battery of equidimension of adaptation, and the commonality is strong.

Due to the arrangement of the pre-fixing structure 640 and the fixing structure 640, the accuracy of installing the battery frame 200 in the lateral arm 600 is improved, and the installing and detaching efficiency of the battery frame 200 is improved, so that the battery replacement efficiency is improved. In addition, compared with the installation directly with the vehicle frame 100 through the battery frame 200 by the installation of the lateral arm 600, the lateral arm 600 has the advantages of good bearing capacity, high strength, small occupied space and simple and reliable structure. Compared with the integral improvement of the battery frame 200, the cost is low; the installation steps are few, and the battery replacement efficiency can be improved.

The mounting member 500 is coupled to the support section 620 by the fixing structure 640 after being pre-positioned at the support section 620 by the pre-positioning structure 630. The pre-positioning structure 630 can be a clamping structure, an inserting structure and the like, the mounting member 500 is pre-fixed on the lateral arm 600 through the pre-positioning structure 630, on one hand, shaking generated after the battery frame 200 is placed on two side walls is avoided, on the other hand, the fixing structure 640 is enabled to be opposite, and the mounting member 500 and the lateral arm 600 are convenient to mount; currently, in the field of battery replacement, a fixing mode is generally fixed by a fastening device, such as a bolt or a quick-release fixing device in the field of battery replacement; when the pre-positioning structure 630 is not provided, one or more fastening devices need to be fastened first to fix the battery frame, and when the fastening devices are not fastened, the machine needs to be operated to assist in fixing the battery frame 200, so that the installation time is long, the battery replacement efficiency is low, and the automatic development of a battery replacement mode is not facilitated. The pre-positioning is performed before the pre-fixing structure 640 is fixed, so that the alignment step and the operation process are reduced, and only the fastening device is needed to connect the fixed mounting part 500 and the lateral arm 600, so that the mounting efficiency and the battery replacement efficiency are improved; because only the fastening device needs to be locked and fixed, the related battery replacement matching equipment is convenient to realize the automatic process.

Specifically, the predetermined positioning structure 630 includes a positioning latch 631 disposed on the supporting section 620 and a positioning slot 510 disposed on the mounting member 500, and the positioning latch 631 is inserted into and positioned in the positioning slot 510.

In order to facilitate the positioning of the positioning pin 631 relative to the positioning slot 510, a chamfer is provided at the free end of the positioning pin 631. The positioning latches 631 may be posts, blocks, etc.

Through setting up positioning slot 510 at the lower extreme of installed part 500, the upper end of supporting section 620 sets up location bolt 631, when the installation, arranges positioning bolt 631 in positioning slot 510, and under the effect of gravity, installed part 500 can arrange in and realize prepositioning on supporting section 620, and at this moment, rethread fixed knot constructs 640 can.

In order to ensure the positioning effect, in this embodiment, the positioning latch 631 is disposed at a middle position in the extending direction of the supporting section 620. Thus, the alignment of the fixing structure 640 can be realized only by arranging one positioning pin 631 and one positioning slot 510.

In other embodiments, the positioning latches 631 may be at both ends of the extension direction of the support section 620.

Specifically, the fixing structure 640 includes a first mounting hole 641 disposed on the supporting section 620 and a second mounting hole 520 disposed on the mounting member 500, and after the mounting member 500 is pre-positioned by the pre-positioning structure 630 on the supporting section 620, the first mounting hole 641 is opposite to the second mounting hole 520 so as to allow the fastening member to sequentially penetrate and fix.

In this embodiment, for stable fixing, the first mounting hole 641 is spaced at a plurality along the extending direction of the support section 620.

In other embodiments, the first mounting holes 641 may be disposed at intervals in the width direction of the support section 620.

Specifically, the first mounting holes 641 are spaced apart in the extending direction of the support section 620, and the second mounting holes 520 are disposed corresponding to the first mounting holes 641.

In this embodiment, four first mounting holes 641 are disposed along the extending direction of the supporting section 620, and the positioning pins 631 are disposed in the middle of the four first mounting holes 641, that is, two first mounting holes 641 are disposed on two sides of the positioning pins 631 respectively.

Further, the lateral connection mechanism 400 further includes a limiting structure, and the limiting structure is disposed at the first installation hole 641 and the second installation hole 520. Specifically, limit structure includes spacing boss 650 and spacing hole, the edge of first mounting hole 641 is equipped with spacing boss 650, installed part 500 corresponds spacing boss 650 is equipped with spacing hole, spacing boss 650 follows support section 620 extending direction is located the relative both sides of first mounting hole 641. Spacing boss 650 can be rectangular form, the semi-cylinder etc., spacing boss 650 extends along the width direction who supports section 620, the extension length of spacing boss 650 is greater than the diameter of first mounting hole 641, the intensity of first mounting hole 641 can be strengthened on the one hand to setting up of spacing boss 650, on the other hand cooperatees through the spacing hole with installed part 500, further guarantee the accuracy of counterpointing, fixed side direction arm 600 of easy to assemble and installed part 500, the installation of the fastener of being convenient for simultaneously, if there is the clearance between installed part 500 and the support section 620, the fastener is wearing to establish the in-process probably to block between the clearance, the installation of fastener can be convenient for in setting up of spacing boss 650. The limiting hole and the second mounting hole 520 of the mounting member 500 may be provided independently of each other, or the limiting hole and the second mounting hole 520 may be communicated with each other.

Specifically, in order to reinforce the structural strength of the lateral arm 600, in the present embodiment, the support section 620 is provided with a first upper reinforcing plate 661, and the first upper reinforcing plate 661 is located between the battery frame 200 and the connection section 610. The support section 620 is provided with a second upper reinforcing plate 662, and the second upper reinforcing plate 662 is located at a side of the support section 620 away from the battery frame 200.

When the battery frame 200 is mounted to the support section 620, the second upper reinforcing plates 662 are positioned at the outermost sides of the mounting member 500, and the second upper reinforcing plates 662 may guide the mounting of the mounting member 500 to facilitate the mounting of the mounting member 500 and the lateral arms 600, in addition to reinforcing the strength between the connection section 610 and the support section 620 as the first upper reinforcing plates 661.

Specifically, in order to further reinforce the structural strength of the lateral arm 600, the support section 620 is provided with a lower reinforcing plate 663, and the lower reinforcing plate 663 is located below the cell frame 200. The lower reinforcing plate 663 is disposed below the supporting section 620 corresponding to the first and second upper reinforcing

plates

661, 662 and is located at both side edges of the supporting section 620 in the length direction of the frame 100.

In order to reduce the overall weight of the lateral arm 600, a plurality of lightening holes are formed between the second upper reinforcing plate 662 and the lower reinforcing plate 663, the lightening holes in the second upper reinforcing plate 662 and the lower reinforcing plate 663 are arranged along the extending direction of the lateral arm 600, and the damping holes can be regular shapes, such as circular or square; or may be irregularly shaped.

The lateral arm 600 is fixed to the frame 100 through the connecting section 610, and a reinforcing structure 670 is disposed between the first upper reinforcing plate 661 and the lower reinforcing plate 663 and the connecting section 610 in order to ensure the structural strength of the connection between the connecting section 610 and the frame 100.

Specifically, in this embodiment, a plurality of fixing holes 611 are disposed in the height direction of the connecting segment 610 for connecting with the vehicle frame 100, the reinforcing structure 670 includes a reinforcing rib 671, and the reinforcing rib 671 and the fixing holes 611 are sequentially arranged at intervals in the height direction of the connecting segment 610.

In other embodiments, the connecting section 610 may also be welded to the side rail 110 of the vehicle frame 100.

In one embodiment, the reinforcement ribs 671 may be integrally provided; in this embodiment, the reinforcement ribs 671 are formed at the joints between the first upper reinforcement plate 661 and the lower reinforcement plate 663 and the connecting segments 610 at intervals, and the reinforcement ribs 671 are formed in a triangular shape and are arranged between the first upper reinforcement plate 661 and the lower reinforcement plate 663 and the connecting segments 610 at intervals in the height direction, so as to improve the structural strength of the joints.

Further, in order to facilitate the installation with the vehicle frame 100, a plurality of fixing holes 611 are provided on the connecting section 610, and the reinforcing ribs 671 and the fixing holes 611 are sequentially arranged on the connecting section 610 at intervals along the height direction. The strength of the joint of the supporting section 620 and the connecting section 610 can be enhanced, the strength of the fixing hole 611 of the connecting section 610 can be improved, and the connecting effect is ensured.

In the present embodiment, the second upper reinforcing plate 662 is tapered toward the extending direction of the support section 620, i.e., the second upper reinforcing plate 662 and the lower reinforcing plate 663 have a triangular shape.

Further, after the lateral arm 600 is connected to the vehicle frame 100, because of the heavy weight of the power battery, the moment from the free end to the longitudinal beam 110 of the vehicle frame 100 is large, and in order to ensure the stable structure of the lateral arm 600 connected to the vehicle frame 100, the support beam assembly 700, which may be further disposed between two opposite lateral arms 600, and the mounting member 500 together form the lateral connecting device 300, in which the connecting section 610 includes an upper section and a lower section, the upper section and the lower section of the connecting section 610 are divided by the first upper reinforcing plate 661 and the lower reinforcing plate 663, the upper section is used to be connected to the longitudinal beam 110 of the vehicle frame 100, and the lower section is used to be connected to the support beam assembly 700.

The upper section of the supporting section 620 is connected with the longitudinal beam 110 of the frame 100, the lower section is located below the longitudinal beam 110, the two ends of the supporting beam assembly 700 are fixedly connected with the lower sections of the two connecting sections 610 through the fixing holes 611, and the supporting beam assembly 700 is located below the frame 100, so that the moment from the free end to the longitudinal beam 110 of the frame 100 is large, the supporting beam assembly 700 plays a role in buffering, and the structural stability of the connection of the lateral arm 600 and the frame 100 is ensured.

Further, in order to reinforce the structural strength of the lateral arm 600, the lateral arm 600 is integrally formed. Specifically, the entire lateral arm 600 is integrally cast, and the structure is more stable.

In summary, the lateral connection mechanism 400 proposed in the present disclosure realizes the lateral battery replacement of the vehicle by adjusting the distance between the two lateral arms 600 on the longitudinal beam 110 on one side of the vehicle frame 100 according to the size of the battery frame 200 to be mounted, and if the heavy-weight power battery is located between the two lateral arms 600 on the opposite sides of the vehicle frame 100, a support beam assembly 700 may be further disposed to avoid the heavy-weight power battery from affecting the vehicle frame 100, the two mounting members 500 are disposed on the opposite sides of the battery frame 200, and the mounting members 500 and the lateral arms 600 are positioned and pre-fixed by the pre-positioning structures 630 of the mounting members 500 and the lateral arms 600, so that the fixing structures 640 are opposite to each other, and the fixing by the fasteners is facilitated, and compared with the mounting by the lateral arms 600, the mounting by the battery frame 200 directly mounted on the vehicle frame 100, the lateral arms 600 have good bearing performance and high strength, and occupy a small space and have a simple and reliable structure. Compared with the integral improvement of the battery frame 200, the cost is low; the installation steps are few, the battery replacement efficiency can be improved, the alignment steps and the operation and control process are reduced by adopting the lateral arm 600, and the installation efficiency and the battery replacement efficiency can be improved by only connecting the fixed installation part 500 and the lateral arm 600 through the locking mechanism; because only the locking mechanism needs to be locked and fixed, the related battery replacement matching equipment is convenient to realize the automatic process.

The locking mechanism can be locked on the lateral connecting device 300 and also locked on the lateral connecting mechanism 400, namely, the lateral connecting device 300 includes the support beam assembly 700, and the lateral connecting mechanism 400 does not include the support beam assembly 700.

When describing the lateral connection mechanism 400, it is mentioned that the support beam assembly 700 can be disposed between the two lateral arms 600, and the specific structure and application of the support beam assembly 700 will be described below.

Referring to fig. 5 to 8, in particular, a support beam assembly 700 for supporting between two side-replacement battery modules respectively installed at lateral sides of a vehicle frame 100, referring to fig. 7, the support beam assembly 700 includes:

a buffer mechanism; and

the two ends of the beam body 720 are respectively provided with one buffer mechanism, and the two ends of the beam body 720 are respectively connected with one side battery replacing module and are located below the frame 100.

In the prior art, in order to facilitate the installation of the power batteries on both sides, through beams are provided for connection, and the through beams extend from the lower part of the longitudinal beam 110 of the frame 100 to both ends and are connected with the battery frame 200. Because the two ends of the through beam are rigidly connected with the battery frame 200, the outermost side of the power battery is subjected to gravity or on a bumpy road surface, so that the through beam is easy to break and fail reliably under the impact of large load and moment, and the support beam assembly 700 is provided.

In one embodiment, the support beam assembly 700 supports the battery frames 200, which may be side-by-side battery modules, and the support beam assembly 700 is disposed between the battery frames 200 at two sides of the vehicle frame 100; or may be a lateral support mechanism 400 for a side-changing battery module. The lateral connection mechanism 400 may be the lateral arm 600 mentioned above, or may be another support.

In the present embodiment, the side-changing battery module is the lateral arm 600 of the above-mentioned lateral connection mechanism 400, specifically, both ends of a support beam assembly 700 are connected with a lateral arm 600, and the battery frame 200 is connected with the lateral arms 600 through the mounting members 500.

The connection relationship between the support beam assembly 700 and the side battery module is, in one embodiment, the end of the beam body 720 is connected to the buffer mechanism and then fixed to the side battery module.

In another embodiment, after the buffer mechanism is fixed at the end of the beam body 720, the beam body 720 is fixed with the side-replaceable battery module.

In other embodiments, the beam body 720 is fixed to the side-charging battery module by a buffer mechanism after the buffer mechanism is fixed to the end thereof.

In an embodiment, the supporting beam assembly 700 is used in a scheme of laterally mounting the power battery, if the power battery is fixed on two sides of the frame 100 through two lateral arms 600, because the power battery has a heavy weight, the moment transmitted from the outermost side of the power battery to the bottom of the lateral arm 600 due to gravity is large, in order to ensure the stability of the support, one part of the lateral arm 600 is connected with the longitudinal beam 110 of the frame 100, the other part is connected with the supporting beam assembly 700, two ends of the supporting beam assembly 700 are respectively connected with one lateral arm 600, and the vibration amplitude of the power battery box is reduced through the buffering of the buffering mechanism, thereby reducing the deformation of the frame 100.

In another embodiment, the support beam assembly 700 may also be adapted to be connected to the battery frames 200 of the power battery, that is, two ends of the support beam assembly 700 are respectively connected to one battery frame 200, and the vibration impact force transmitted from the battery frames 200 at two sides to the support arm and the rotation bending moment inertia force around the X-axis are buffered and damped by the buffer mechanism, so that the bending displacement of the battery frames 200 at two sides is constrained, the swing amplitude of the power battery frame 200 is reduced, and the deformation of the frame 100 is reduced.

In this embodiment, the support beam assembly 700 is fixed with the lateral arm 600 of the lateral connection mechanism 400, two ends of the support beam assembly 700 are respectively connected to the lower end of one lateral arm 600, the upper end of the lateral arm 600 is fixed with the frame 100, the vibration impact force transmitted to the support arm by the battery frames 200 at two sides and the rotation bending moment inertia force around the X axis can be buffered and damped by the buffer mechanism and then transmitted to the middle beam 240 body, so as to ensure that the support beam assembly 700 does not break due to excessive transient stress, and simultaneously restrain the bending displacement of the lateral arms 600 at two sides, thereby reducing the shaking amplitude of the power battery frames 200 and reducing the deformation of the frame 100. Through the collocation and use of lateral connecting mechanism 400 and supporting beam assembly 700, the power battery of the heavy weight of various heavy commercial vehicles of adaptation can realize the side direction and trade the electric mesh, and the commonality is strong.

Referring to fig. 7 and 8, by using a buffer mechanism and a beam body 720, two ends of the beam body 720 are respectively provided with the buffer mechanism, and two ends of the beam body 720 are respectively connected with one side battery replacement module and are located below the vehicle frame 100. The support beam assembly 700 can be used for connecting with the two lateral arms 600, and the support beam assembly 700 can also be used for connecting with the battery frame 200 of the power battery, because the power battery is heavy, the moment transmitted to the bottom of the lateral arm 600 from the outermost side of the power battery due to gravity is large, and the vibration impact force transmitted to the support beam assembly 700 by the battery frames 200 at the two sides and the rotation bending moment inertia force around the X axis are buffered and damped by the buffer mechanism and then transmitted to the beam body 720, so that the support beam assembly 700 is ensured not to be broken due to overlarge instantaneous stress, the shaking amplitude of the power battery frame 200 is reduced, and the deformation of the vehicle frame 100 is reduced. Through the collocation and use of lateral connecting mechanism 400 and supporting beam assembly 700, the power battery of the big weight of various heavy commercial cars of suitability realizes the side direction and trades the electric mesh, and the commonality is strong.

Specifically, in order to ensure the bearing capacity and rigidity of the support beam assembly 700, the beam body 720 is made of metal, such as metal steel, aluminum alloy, etc.

In order to ensure the integrity and structural reliability of the beam body 720, the beam body 720 is integrally formed. Such as integral punch forming, integral casting forming, high-strength aluminum alloy hot forming technology and the like.

Further, the cushioning mechanism is configured as an elastomer assembly 710, or alternatively, the cushioning mechanism is configured as a shock absorber assembly.

Specifically, in the configuration of the elastomer assembly 710, the elastomer assembly 710 and the beam body 720 may be detachably connected, such as locked by screws, fixed by clamping, etc.; or may be a fixed connection such as welding, riveting, etc.

In this embodiment, the elastic body assembly 710 includes an elastic body 712, a first fixing portion 711 and a second fixing portion 713 for fixing the elastic body 712, and two ends of the beam body 720 are respectively connected to the first fixing portion 711. The elastic body 712 may be configured as rubber, silicone, or the like. Specifically, the elastic body 712 may be a prism type or a cylinder type.

In this embodiment, the elastic body 712 is configured as a rubber block.

In the case of a shock absorber assembly, this may be, for example, a mechanical shock absorber or an air bag shock absorber.

Specifically, in order to facilitate the installation of the buffering mechanism, in one embodiment, the first fixing portion 711 is detachably connected to the beam body 720.

In another embodiment, the first fixing portion 711 is welded to both ends of the beam body 720.

Specifically, in order to ensure the damping effect, both ends of the beam body 720 are provided with mounting flanges 721, the mounting flanges 721 are provided with mounting holes 722, the first fixing portion 711 and the second fixing portion 713 are provided with fixing flanges 714, the fixing flanges 714 are provided with assembly holes, the mounting flanges 721 are right opposite to the fixing flanges 714 so that the mounting holes 722 and the assembly holes are aligned, and fasteners sequentially penetrate through the mounting holes and the assembly holes and are connected with the side battery replacement module. The elastic body 712 is disposed between the first fixing portion 711 and the second fixing portion 713 to ensure the stress of the elastic body 712 is balanced, thereby ensuring the shock absorption effect.

In order to ensure the structural stability of the support beam assembly 700, the support beam assembly 700 further includes a reinforcing connector 723, and the reinforcing connector 723 is disposed between the mounting flange 721 and the beam body 720.

In one embodiment, the reinforcing connectors 723 may be support ribs, stiffeners, or the like.

In another embodiment, the reinforcing connector 723 may be a structure formed on the beam body 720 itself to improve the strength of the joint.

Specifically, since the moment from the power battery is mostly transmitted under the girder body 720, in order to secure the load bearing stability of the first and second fixing

portions

711 and 713 and the girder body 720, the reinforcing connector 723 is provided under the mounting flange 721 and the girder body 720. The reinforcing connecting member 723 is formed in a triangular shape between the mounting flange 721 and the beam body 720 to ensure structural strength below the first connecting portion 821 and the second connecting portion 863. The reinforcing connectors 723 may be plates, columns, blocks, ribs, etc. The reinforcing connecting member 723 may be integrally formed with the beam body 720, or may be separately formed and welded together.

The battery frames 200 on both sides of the vehicle are supported by two lateral connection mechanisms 400, and the battery frames 200 are fixed and separated from the lateral connection mechanisms 400 or the lateral connection devices 300 by a locking mechanism. Whether the locking mechanism can be quickly locked and separated and quickly installed can affect the efficiency of replacing the battery frame 200, and the structure of the first scheme of the locking mechanism is described below.

Referring to fig. 9 to 10, a locking mechanism for connecting two workpieces to be fixed includes:

the fastening bolt 910 comprises a bolt head 911 for rotating a tool and a screw 914 connected with the bolt head 911, wherein the screw 914 is provided with a connecting external thread; the inner wall of the fastening nut 920 is provided with a connecting internal thread; a bolt sleeve 930 for connecting with one of the workpieces to be fixed and sleeved outside the fastening bolt 910, wherein the bolt sleeve 930 is used for blocking the fastening bolt 910 from disengaging; the nut sleeve 960 is connected with one of the workpieces to be fixed and sleeved outside the fastening nut 920, the fastening nut 920 has a movable range in the nut sleeve 960 along the axial direction, and an anti-rotation structure is arranged between the nut sleeve 960 and the fastening nut 920 to prevent the fastening nut 920 from rotating along the circumferential direction.

The two workpieces to be fixed can be battery replacement batteries and a battery replacement battery connecting mechanism; other scenarios are possible where similar protection against dropping of the locking mechanism is desired. In an application scenario, the locking mechanism is mainly used to fix the battery frame 200 to the vehicle frame 100, for example, if the vehicle adopts a rear battery replacement scheme, the locking mechanism may fix the battery frame 200 to the rear of the vehicle frame 100, or, for example, fix the battery frame 200 to the lateral connection mechanism 400.

The anti-rotation structure can be limited between the clamping block and the clamping block, and can also be in a mode of arranging a one-way ratchet wheel and the like. The bolt sleeve 930 has a mounting relief 941 on a side thereof adjacent to the bolt head 911 to facilitate manipulation of the fastening bolt 910.

As mentioned above, when the battery frame 200 is mounted on the lateral connecting mechanism 400, the fastening bolt 910 is fixed on one of the battery frame 200 and the lateral connecting mechanism 400 through the bolt sleeve 930, the bolt sleeve 930 blocks the fastening bolt 910 from being detached, so that the fastening bolt 910 is prevented from falling off during disassembly, and the fastening bolt 910 is prevented from being picked up again during each mounting process, so that the mounting steps are shortened, and the mounting efficiency is improved; in order to further shorten the installation steps and improve the battery replacement efficiency, the fastening nut 920 is fixed on the other one of the battery frame 200 or the lateral connecting mechanism 400 through the nut sleeve 960, it is easy to understand that the battery frame 200 and the lateral connecting mechanism 400 are provided with opposite installation holes 722, the fastening bolt 910 and the fastening nut 920 are respectively arranged corresponding to the installation holes 722, the fastening nut 920 has a certain movement range in the nut sleeve 960, the head of the fastening bolt 910 can push against the nut to be adjusted so as to facilitate the connection of the connection external thread and the connection internal thread, and because the anti-rotation structure is arranged between the nut sleeve 960 and the fastening nut 920, the fastening nut 920 cannot rotate along with the nut, so that the fixation and installation can be completed only by rotating the fastening bolt 910, compared with the traditional installation mode, the installation steps are greatly shortened, the installation efficiency is improved, and the battery replacement efficiency is improved; moreover, the fastening bolt 910 and the fastening nut 920 cannot fall off, and the fastening bolt 910 needs to be rotated in the installation and disassembly processes, so that the automatic realization and the landing of the power conversion matching equipment are facilitated.

Further, in order to facilitate the installation of the fastening bolt 910 and the fastening nut 920, a guide structure is provided at the free end of the screw 914 and at the aperture of the fastening nut 920 facing the screw 914.

Specifically, the guiding structure includes a tapered guiding surface 915 disposed at the free end of the screw 914, and a guiding groove 962 disposed at the orifice of the fastening nut 920 facing the screw.

In the mode of threaded connection, when the first thread button is in contact engagement, the concentricity of the first thread button and the first thread button is easy to deviate, so that the locking effect is poor, the situations such as thread abrasion occur, and the like are avoided, and the automatic operation is not facilitated, in order to solve the problem of threaded connection reliability, and achieve the purposes of improving the electricity exchanging efficiency, saving the cost and reducing the maintenance frequency of parts, matched guide structures are arranged at the free end of the screw 914 and the screw hole of the fastening nut 920, and in one embodiment, the guide structures are configured as a conical guide surface 915 arranged at the end of the screw 914 and a guide groove 962 arranged at the screw hole in the sleeving direction of the fastening nut 920; in other embodiments, the guide block can be matched with the tenon and mortise; thus, the power station end tightening mechanism rotates the fastening bolt 910 to move towards the fastening nut 920, the tapered guide surface 915 of the fastening bolt 910 first contacts the guide groove 962 of the fastening nut 920, and in the continuous upward process, the fastening bolt 910 and the fastening nut 920 gradually achieve concentricity alignment, and in the process, the fastening nut 920 has a certain displacement adjustment amount in the nut sleeve 960, so that concentricity deviation caused by assembly size errors can be compensated, and therefore when the fastening bolt 910 is matched with the fastening nut 920, alignment and combination can be rapidly performed; the nut sleeve 960 through which the fastening nut 920 passes limits rotation, and the fastening bolt 910 needs to be operated, so that the installation process is further simplified, and the battery replacement efficiency is improved.

Specifically, in order to ensure that the fastening bolt 910 and the fastening nut 920 can be quickly combined, the locking mechanism further includes a first elastic restoring member 970, and the first elastic restoring member 970 is located between the nut sleeve 960 and the fastening nut 920. The nut sleeve 960 is sleeved outside the fastening nut 920, the fastening nut 920 can move in the nut sleeve 960, and the first elastic resetting piece 970 is positioned between the nut sleeve 960 and the fastening nut 920, so that the first elastic resetting piece 970 can give the fastening nut 920 a tendency of moving towards the fastening bolt 910 in the installation process, and the fastening nut 920 and the fastening bolt 910 can be combined conveniently; after disassembly, the first elastic restoring member 970 may urge the fastening nut 920 to restore its original position, facilitating the subsequent coupling.

Specifically, in one embodiment, the first elastic restoring element 970 is configured as a nut spring, one end of which abuts against the bottom wall of the nut sleeve 960 and the other end of which abuts against the end of the fastening nut 920.

In other embodiments, the first elastic restoring member 970 may also be a metal elastic sheet, or an elastic rubber.

Further, in order to limit the follow-up rotation problem of the fastening nut 920 in the installation process and the disassembly process and simplify the installation process, the anti-rotation structure comprises a limiting convex rib 921 arranged on the periphery of the fastening nut 920 and a limiting groove 961 arranged in the nut sleeve 960 and matched with the limiting convex rib 921, the limiting convex rib 921 and the limiting groove 961 are in clearance fit, and the limiting convex rib 921 moves in the limiting groove 961 along the axial direction.

Specifically, in order to compensate for the concentricity deviation caused by the assembly dimension error, the limiting convex rib 921 and the limiting groove 961 are in clearance fit, so that the fastening nut 920 can be adaptively adjusted under the guiding structure, and the fastening bolt 910 can be quickly guided and combined when being matched with the fastening nut 920.

Specifically, in order to ensure the alignment effect of the fastening nut 920, the limiting ribs 921 are symmetrically disposed on the periphery of the fastening nut 920.

In one embodiment, the fastening nut 920 is circular, and the limiting ribs 921 are symmetrically arranged with the circumference of the circle; in another embodiment, the fastening nut 920 is square, and the limiting ribs 921 may be configured as four sides of the square periphery, or may be additionally provided.

Further, for the convenience of rotating fastening bolt 910, locking mechanism still includes that second elasticity resets 980, bolt cover 930 includes bolt sleeve 940, bolt pullover 950, fastening bolt 910 arranges in bolt sleeve 940, the removable cover of bolt pullover 950 is located bolt head 911 can drive bolt head 911 rotates, bolt sleeve 940 has and dodges mouth 941, bolt pullover 950's part is followed dodge mouth 941 and stretch out, just dodge the edge of mouth 941 and block the bottom edge of bolt pullover 950, second elasticity resets 980 and arranges in bolt pullover 950's bottom and treat between the fixed work piece, fastening bolt 910 follows wear to establish in the middle of second elasticity resets 980.

The engagement of the bolt sleeve 940 with the bolt cap 950 may prevent the dropping of the fastening bolt 910, and the provision of the bolt cap 950 may facilitate the rotation of the fastening bolt 910,

the bolt head 911 is equipped with joint portion 913, be equipped with matched with draw-in groove portion 954 in the cover head portion 951, draw-in groove portion 954 follows the screw 914 direction of inserting extends, joint portion 913 can follow draw-in groove portion 954 slides, through joint portion 913 with draw-in groove portion 954 cooperatees, cover head portion 951 drives the bolt head 911 rotates. The bolt head 911 of fastening bolt 910 is equipped with joint portion 913, is equipped with matched with draw-in groove portion 954 in the bolt pullover 950, and mode such as spline fit can be done with a job to joint portion 913 and draw-in groove portion 954, and the setting of second elasticity piece 980 resets, and under free state, because the elastic action of second elastic component, bolt pullover 950 stretches out bolt sleeve 940 and is convenient for operate. In the installation process, the bolt sleeve head 950 is pressed along the axis through a tightening tool, the fastening screw 914 is inserted into the fastening nut 920, the axis of the fastening bolt 910 and the fastening nut 920 is pre-aligned through the guide structure, the thread parts of the fastening bolt 910 and the fastening nut 920 start to contact, the tightening tool is screwed, the fastening bolt 910 and the fastening nut 920 clamp a workpiece to realize locking, and after the tightening tool retracts, the bolt sleeve head 950 is restored to the original position through the elastic force of the second elastic part, so that the subsequent operation is facilitated.

Further, in order to prevent the fastening bolt 910 and the fastening nut 920 from being loosened, a rotation stopping structure is provided between the bolt sleeve 940 and the bolt socket 950. After the tightening tool retracts, the bolt sleeve 940 is abutted to the bolt sleeve head 950 through the elasticity of the second elastic piece, the rotation of the bolt sleeve head 950 relative to the bolt sleeve 940 is limited through a rotation stopping structure between the bolt sleeve 940 and the bolt sleeve head 950, meanwhile, the bolt sleeve head 950 limits the rotation of the fastening bolt 910, and the fastening bolt 910 cannot rotate after being installed, so that the purpose of preventing looseness is achieved.

Specifically, the bolt sleeve head 950 comprises a sleeve head portion 951 and an outer extension edge 952 connected with the sleeve head portion 951, the rotation stopping structure comprises first tapered teeth 953 arranged between the outer extension edge 952 and the sleeve head portion 951 and second tapered teeth 942 arranged on the inner wall of an avoidance opening 941 of the bolt sleeve 940, and the first tapered teeth 953 and the second tapered teeth 942 cooperate to stop the relative rotation of the bolt sleeve head 950 and the bolt sleeve 940. Be equipped with first awl tooth 953 between extension limit 952 and the pullover 951, the inner wall of dodging mouth 941 of bolt sleeve 940 is equipped with second awl tooth 942, and the mechanical lock is realized to the cooperation of first awl tooth 953 and second awl tooth 942 to realize locking purpose.

Further, in order to provide a larger friction torque of the support surface when the fastening bolt 910 is tightened, the bolt head 911 is further provided with a bolt edge 912, and an upper edge of the bolt edge 912 stops a lower edge of the extension edge 952. The bolt edge 912 can increase friction torque when a workpiece is abutted, and can also play a role in limiting the movement of the bolt sleeve head 950 along the screw 914, so that the bolt sleeve head 950 and the bolt head 911 can be conveniently sleeved.

Further, for bolt sleeve 940's locking that resets is effectual, second elasticity resets 980 includes bolt spring 981 and locates the solid fixed ring 982 of the spring at bolt spring 981 both ends, one the solid fixed ring 982 butt work piece of spring, another the solid fixed ring 982 butt of spring 952 of bolt sleeve 940, fastening bolt 910 passes from two the solid fixed ring 982 of spring is middle, can not play the interference to fastening bolt 910's connection.

Specifically, if the fastening bolt 910 is fixed on the battery end bracket through the bolt sleeve 930 and the fastening nut 920 is fixed on the end support bracket of the frame 100 through the nut sleeve 960, the fastening bolt 910 and the fastening nut 920 cannot fall off, and the fastening nut 920 is covered by the nut sleeve 960 and can only move within a small range inside the nut sleeve 960; the fastening bolt 910 cannot pass through the bolt sleeve 930, and the fastening bolt 910 is locked or released by the bolt sleeve head 950 when being mounted or dismounted. The locking principle is as follows: after the battery end bracket and the end bracket of the vehicle frame 100 are attached, as in the lateral arm 600 and the mounting member 500 in the lateral connection mechanism 400, the fastening bolt 910 is moved under the control of the tightening mechanism at the battery replacing station end, and the tapered guide surface 915 of the free end of the fastening bolt 910 is first contacted with the guide groove 962 of the fastening nut 920, and in the continuous upward process, the fastening bolt 910 and the fastening nut 920 are gradually aligned in concentricity through the tapered guide surface 915 and the guide groove 962, and in the process, the fastening nut 920 is placed in the nut sleeve 960 and is displaced by a certain displacement adjustment amount, so that the concentricity offset caused by the assembly dimension error can be compensated. When the fastening bolt 910 and the fastening nut 920 start to be in threaded engagement, the nut sleeve 960 can prevent the fastening nut 920 from following rotation, and simultaneously restrains the fastening nut 920, so that the fastening nut 920 can be well kept in a set position area, and therefore when the fastening bolt 910 is matched with the fastening nut 920, the fastening bolt can be quickly guided and combined, the installation process is simplified, and the battery replacement efficiency can be improved.

In the battery replacement scheme, it becomes more important to quickly replace the battery pack in the battery replacement vehicle. The current heavy truck battery-replacing locking system adopts a pneumatic, electric or hydraulic bolt and a clamping type locking structure as main modes; the most central disadvantages are: firstly, the power devices such as pneumatic and hydraulic devices occupy the arrangement space of the battery, so that the electric quantity of the battery is influenced, and the driving mileage of the whole vehicle is shortened; secondly, the number of components is large, the cost is high, and electrical faults are easy to occur; finally, the clearance locking easily occurs the locking head and wears fast to lead to the locking inefficacy, there is the battery that trades and shakes the security risk that the momentum is big, even drops. In order to improve the efficiency of trading the electricity, refer to fig. 11 to 14, this scheme still provides a locking mechanism, and simple structure not only can realize the quick replacement of battery package, has higher compatibility moreover, can effectively improve the installation accuracy of battery package, also is convenient for collocation trade supporting setting of electricity, realizes the automation of trading.

Referring to fig. 11 to 14, the locking mechanism for connecting two workpieces to be fixed includes:

a fixing rod 810 including a rod head 811 for rotating a tool, and a rod body 820 connected to the rod head 811, wherein the rod body 820 includes a first connection portion 821 and a first guide portion 822 sequentially arranged along an extending direction thereof, and the first guide portion 822 is located at a free end of the rod body 820; and

a socket 860, the socket 860 having an installation port 861 for the stem body 820 to penetrate therethrough, the inner wall of the socket 860 being sequentially provided with a second guide portion 862 and a second connection portion 863 along the penetrating direction, the second guide portion 862 being provided at the installation port 861, the fixing rod 810 penetrating the socket 860 from the installation port 861, and the first guide portion 822 and the second guide portion 862 being engaged with each other to connect the first connection portion 821 and the second connection portion 863 with each other in a relative position so as to fix the socket 860 and the fixing rod 810.

The two workpieces to be fixed can be battery replacement batteries and a battery replacement battery connecting mechanism; other scenarios may also be possible where similar requirements for preventing the locking mechanism from falling are present. In an application scenario, the locking mechanism is mainly used to fix the battery frame 200 to the vehicle frame 100, for example, if the vehicle adopts a rear battery replacement scheme, the locking mechanism may fix the battery frame 200 to the rear of the vehicle frame 100, or, for example, fix the battery frame 200 to the lateral connecting device 300 or the lateral connecting mechanism 600.

In a conventional installation mode of replacing the battery: generally, the fixing rod 810 and the socket 860 are connected and fixed through a first connecting portion 821 and a second connecting portion 863 of the fixing rod 810 after the fixing rod 810 and the socket 860 are vertically penetrated, the first connecting portion 821 and the second connecting portion 863 can be in threaded fit, clamping fit and the like, and in the socket process of the fixing rod 810 and the socket 860, because machining errors or alignment accuracy is low, process time is often spent for alignment in the installation process; even if the end of some dead lever 810 will set up the chamfer, still can not avoid the easy problem that produces the deviation of concentricity, especially on the screw-thread fit scheme, when the contact meshing of screw thread at first knot, the easy problem that produces the deviation of two concentricity can not be solved.

Referring to fig. 12 to 14, in the present embodiment, the first guide portion 822 and the second guide portion 862 increase the guiding function of the locking mechanism, and improve the alignment concentricity of the locking mechanism;

in an embodiment, the first guiding portion 822 may be a chamfer provided at a free end of the body portion 820, the second guiding portion 862 is a guide groove provided at the mounting port 861 of the socket joint 860, and the fixing rod 810 and the socket joint 860 are provided with a matching chamfer and a guide groove, so that after the fixing rod 810 penetrates through the socket joint 860, the body portion 820 and the socket joint 860 can be concentric better due to double guiding of the chamfer and the guide groove, which facilitates matching of the subsequent first connecting portion 821 and the second connecting portion 863, thereby being also beneficial to realizing automatic operation of the locking mechanism and improving battery replacement efficiency.

In another embodiment, the first guide portion 822 and the second guide portion 862 may be guide blocks, and the two guide blocks are engaged with each other by tenons and mortises, and in other embodiments, the first guide portion 822 and the second guide portion 862 may also be guide parts additionally provided at the entrances of the body portion 820 and the socket 860.

For convenience of processing and cost reduction, the first connection portion 821 is configured as a male screw, the second connection portion 863 is configured as a female screw, and a tapered guide surface and a guide groove 962 are provided in the fixing member. The toper spigot surface 915 of mounting contacts guide way 962 end of cup joint 860 earlier, and in the in-process that lasts ascending, the concentricity is adjusted well in the center of mounting and cup joint 860 gradually to guarantee smooth and easy when external thread and internal thread begin the screw thread engagement, reduce the wearing and tearing condition.

Further, in the installation of the replaceable battery, the replaceable battery is usually set up on a support mechanism for replacing the battery, for example, in the above mentioned lateral solution, the battery frame 200 is placed on the two lateral connecting mechanisms 400, and after the battery is fixed by the locking mechanism, the fixing rod 810 and the socket joint 860 need to be operated both in the installation process and the disassembly process, if the battery replacement process needs to be automated, an up-and-down machine needs to be set to clamp, and then the battery is installed or disassembled. After the dismantlement, the dead lever 810 and the condition that drops in the work piece hole site when cup jointing 860 can appear dismantling, locking mechanism's installation effectiveness is low, leads to trading the electric inefficiency to be unfavorable for trading the automatic realization of electricity.

In order to simplify the installation process, avoid falling from the hole site of the workpiece when disassembling, save the operation time of screwing and thus improve the battery replacement efficiency, the locking mechanism further comprises a stop member 870, the lever body 820 comprises an upper lever portion 830 near the free end of the lever body 820, a middle lever portion 840 near the middle of the lever body 820 and a lower lever portion 850 near the lever head 811, the stop member 870 is movably arranged on the lower lever portion 850 and is stopped by the lever head 811 and the first connecting portion 821, and the stop member 870 is used for fixing with one of the two workpieces to be fixed.

In this embodiment, the stopper 870 is fixed to the mounting member 500 of the battery frame 200, or may be on the lateral arm 600, and the stopper 870 is located at the lower rod portion 850 and is relatively movable, so that the stopper 870 is stopped by the rod head portion 811 and the first connecting portion 821 regardless of whether the stopper 870 is mounted upward or downward, and is prevented from falling out of the hole of the workpiece during disassembly. That is, the stop 870 is constrained to the lower stem portion 850, which in one embodiment may be a middle stem portion 840 having a larger diameter than the lower stem portion 850; in another embodiment, first coupling portion 821 may protrude from lower stem portion 850.

Specifically, the stopper 870 is configured as a gasket having a bore smaller than an outer diameter of the first connection portion 821. The stop part 870 is a gasket or a plate, on one hand, the stop part 870 can prevent the fixing rod 810 from falling off, on the other hand, the contact area between the fixing rod 810 and the surface of the workpiece can be increased, the surface of the part is prevented from being worn out, and the anti-loosening effect can be achieved.

In order to further simplify the installation process and save the tightening operation time, thereby improving the battery replacement efficiency, the locking mechanism further includes a limiting member 880, the limiting member 880 is sleeved outside the socket 860, the limiting member 880 is configured to be fixed to the other of the two workpieces to be fixed, and the limiting member 880 defines the displacement range of the socket 860 in the axial direction.

In this embodiment, the stopper 870 is fixed to the mounting member 500 of the battery frame 200, and the stopper 880 is fixed to the lateral arm 600. In one embodiment, the position limiting member 880 is a position limiting member. In another embodiment, the retaining member 880 is a sleeve.

Specifically, the limiting member 880 comprises a limiting section 881 and mounting ears 883 positioned at two sides of the limiting section 881, a limiting through opening 882 for the socket head 860 to pass through is arranged on the limiting section 881, the mounting opening 861 of the socket head 860 is provided with a skirt 864 extending along the periphery of the mounting opening 861, and the bottom edge of the limiting through opening 882 stops the skirt 864. The mounting ears 883 are for connection with one of a replacement battery and a support mechanism for the replacement battery. The connection mode can be bolt connection, riveting, welding and the like.

Specifically, in order to enable the fixing rod 810 and the sleeve joint 860 to be capable of conducting guiding and combining quickly, a step is formed between the mounting lug 883 and the limiting section 881, the height distance between the limiting section 881 and the to-be-fixed part is a displacement range, and the displacement range is 3mm-4mm. The displacement adjustment amount of 3mm-4mm in the height direction is formed between the limiting section 881 and the skirt 864 of the sleeve joint 860, so that the concentricity offset caused by assembly dimension errors is compensated.

Further, in order to further simplify the installation process and save the tightening operation time, thereby improving the battery replacement efficiency, a limiting structure is provided between the limiting member 880 and the socket joint 860, the limiting structure includes a limiting portion 884 provided at the limiting through opening 882 and a stopping portion 865 provided at the outer surface of the socket joint 860, and the limiting portion 884 and the stopping portion 865 are in clearance fit to limit the rotation of the socket joint 860 relative to the limiting member 880 along the circumferential direction.

In an embodiment, the limiting member 880 is a limiting plate, a square through opening is arranged in the middle of the limiting plate, a hexagonal nut edge is arranged on the outer surface of the sleeve joint 860, the square through opening is sleeved on the hexagonal nut edge to limit the circumferential rotation of the sleeve joint 860 relative to the limiting member 880, and the bottom of the sleeve joint 860 is stopped by the lower edge of the square through opening, so that the sleeve joint 860 is limited to move axially relative to the limiting member 880, and meanwhile, the sleeve joint 860 is ensured to have a certain displacement adjustment amount to compensate for concentricity offset caused by assembly size errors, and assembly is more convenient. The square opening is in clearance fit with the hexagonal nut edge, so that the situation that the sleeve joint 860 rotates along with the disassembly process in the installation process can be prevented, the sleeve joint 860 can be well kept in a set position area under the constraint, and the fixing rod 810 can be quickly aligned and combined when being matched with the sleeve joint 860.

In another embodiment, the retaining member 880 is a sleeve, the retaining portion 884 is configured to have a guiding groove 962 therein, the stopping portion 865 is configured to protrude outward and be a guiding rib of the socket 860, the guiding rib can move along the guiding groove 962 and be retained by an end of the sleeve, and in the axial rotation, the guiding rib and the guiding groove 962 are retained, thereby restricting the follow-up of the socket 860 during installation and removal.

Further, in order to ensure the smoothness of assembly, the spacing portion 884 and the stopping portion 865 are in clearance fit between 3mm and 8mm, so that the smoothness of installation is ensured, and the effect of stopping is also ensured.

Specifically, for convenience of installation and securing the locking effect, the first connection part 821 is configured as an external thread, and the second connection part 863 is configured as an internal thread.

Further, in order to ensure the locking effect, the length of the external thread is greater than that of the internal thread.

Specifically, in order to secure the guiding effect, the first guide portion 822 is configured as a tapered guide surface 915, and the second guide portion 862 is configured as a guide groove 962.

Further, in order to secure the fixing effect, the head 811 is provided with a flange 812, and an outer diameter of the flange 812 is greater than an outer diameter of the head 811.

Further, in order to ensure the fixing effect of the fixing rod 810 and the socket joint 860, the rod head 811 is arranged on the flange 812, and the flange 812 is larger than the rod head 811, so that a larger supporting surface friction torque is provided when the fixing rod 810 is screwed down, and the connection is more reliable.

Specifically, in one embodiment, the flange faces have dimensions Φ 52-60, the central shank 840 is threaded with a thread size of M24, and the unthreaded shank 35 has dimensions Φ 20. The screw thread size specification is greater than the screw thread pole portion size, can prevent to drop from the work piece hole site when the bolt is dismantled, can further simplify the installation, improves and trades electric efficiency. The upper part of the inner hole of the sleeve joint 860 is processed with a thread, the size of the thread is M24, and the length of the thread is 39mm-43mm. Compared with a common nut, the nut has larger thread length, maximally disperses the axial tension of the thread, better protects the thread, improves the friction torque of the thread to the maximum extent, and has certain gain effect on looseness prevention.

Specifically, if the sleeve joint 860 is fixed to the battery end bracket through the limiting piece 880, the fixing rod 810 is fixed to the bracket at the end of the frame 100 through the stopping piece 870, if the limiting piece 880 is fixed to the battery end bracket plate through a bolt or welding, the sleeve joint 860 is sleeved by the limiting plate frame and can only move within the opening range in the middle of the limiting plate; the fixed rod 810 and the stopper 870 are positioned below the end support bracket of the frame 100; the stopper 870 is fixed to the support bracket at the end of the frame 100, and the diameter of the center hole of the stopper 870 is smaller than the outer diameter of the middle thread of the fixing rod 810, so that the fixing rod 810 cannot pass through the stopper 870 and thus is maintained in its position when the fixing rod 810 falls down by gravity. The locking principle is as follows: after the battery end bracket is attached to the bracket at the end of the vehicle frame 100, the fixing rod 810 moves upward under the control of the tightening mechanism at the end of the battery replacing station, the tapered guide structure at the free end of the fixing rod 810 contacts the socket joint 860, and in the continuous upward process, the fixing rod 810 and the socket joint 860 are aligned with each other gradually by the first guide portion 822 of the fixing rod 810 and the second guide portion 862 of the socket joint 860, and in the process, a proper displacement adjustment amount is provided between the socket joint 860 and the limiting member 880, so that the concentricity deviation caused by the assembly dimension error can be compensated. This is also the meaning of providing the first guide 822 at the fixing rod 810 and the guide slot 962 at the socket 860. When first connecting portion 821 and second connecting portion 863 begin threaded engagement, locating part 880 can prevent to cup joint 860 to follow and change, the effect of limiting plate both can prevent to cup joint 860 to follow and change, it can keep well in the position region of settlement also to have retrained simultaneously to cup joint 860, the mounting hole 722 of cup joint 860 and the punchhole department of battery end support promptly, thereby when guaranteeing that dead lever 810 wants to cooperate with cup joint 860, the quick line is led and is just combined, so, the process of having simplified installation, thereby can improve and trade electric efficiency.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A locking mechanism for connecting two workpieces to be secured, comprising:

the socket joint, the socket joint has the confession the installing port that the pole somatic part was worn to establish, the inner wall of socket joint is equipped with second guide part and second connecting portion along wearing to establish the direction in proper order, the second guide part is located installing port department, the dead lever is followed the installing port is worn to establish the socket joint, first guide part with the second guide part cooperates, makes first connecting portion with the relative phase connection of second connecting portion is in order to fix the socket joint with the dead lever.

2. The locking mechanism of claim 1, further comprising a stop member, said body portion including an upper rod portion adjacent a free end of said body portion, a middle rod portion adjacent a middle of said body portion, and a lower rod portion adjacent said head portion, said stop member being movably disposed in said lower rod portion and being stopped by said head portion and said first connecting portion, said stop member being adapted to be secured to one of two workpieces to be secured.

3. The locking mechanism of claim 2, wherein the stopper is configured as a washer having a bore smaller than an outer diameter of the first connecting portion.

4. The locking mechanism of claim 2, further comprising a limiting member, wherein the limiting member is sleeved outside the socket, the limiting member is configured to be fixed to the other of the two workpieces to be fixed, and the limiting member defines a displacement range of the socket along an axial direction.

5. The lock mechanism as claimed in claim 4, wherein the limiting member comprises a limiting section and mounting lugs at two sides of the limiting section, the limiting section is provided with a limiting through opening for the socket to pass through, the mounting opening of the socket is provided with a skirt extending along the periphery of the mounting opening, and the bottom edge of the limiting through opening is stopped by the skirt.

6. The lock-out mechanism of claim 5, wherein a step is formed between the mounting lug and the limiting section, and the height distance between the limiting section and the member to be fixed is a displacement range, and the displacement range is 3mm-4mm.

7. The locking mechanism of claim 5, wherein a limiting structure is disposed between the limiting member and the socket, the limiting structure includes a limiting portion disposed at the limiting opening and a stopping portion disposed on an outer surface of the socket, and the limiting portion and the stopping portion are in clearance fit to limit the socket from rotating relative to the limiting member in a circumferential direction.

8. The locking mechanism of any one of claims 1 to 7, wherein the first connecting portion is configured as an external thread and the second connecting portion is configured as an internal thread.

9. The locking mechanism of claim 8, wherein the length of the external thread is greater than the length of the internal thread.

10. The locking mechanism of claim 8, wherein the first guide portion is configured as a tapered guide surface and the second guide portion is configured as a guide groove.

11. The locking mechanism of claim 1, wherein the stem head is provided with a flanged edge having an outer diameter greater than an outer diameter of the stem head.

12. Use of a locking mechanism according to any of claims 1 to 11 for fixing a battery frame.

13. A vehicle comprising a battery frame, two lateral connecting means, and the locking mechanism of any one of claims 1 to 11, wherein the battery frame is fixed between the two lateral connecting means, and the battery frame and the lateral connecting means are locked or separated by the locking mechanism.