CN217804303U

CN217804303U - Quick-change bracket and quick-change battery pack assembly comprising same

Info

Publication number: CN217804303U
Application number: CN202221579620.1U
Authority: CN
Inventors: ***; 黄春华
Original assignee: Aulton New Energy Automotive Technology Co Ltd
Current assignee: Aulton New Energy Automotive Technology Co Ltd
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-15
Anticipated expiration: 2032-06-22

Abstract

The utility model discloses a quick change support and contain its quick change battery package assembly. The quick-change support is installed on a chassis of an electric automobile and comprises two longitudinal beams which are arranged oppositely, each longitudinal beam at least comprises a chassis installation surface which is used for being connected with the chassis and faces upwards and a battery pack installation surface which is connected with a quick-change battery pack and faces towards the longitudinal beam, the chassis installation surface is provided with a plurality of first protruding portions which are arranged at intervals along the length direction of the longitudinal beams, and the first protruding portions are used for being attached to and connected to the chassis. The quick-change bracket is provided with a support component at least at the corresponding position of the first bulge, and the support component is positioned on the back of the chassis mounting surface and/or the battery pack mounting surface. The first protruding part reduces the contact surface between the chassis mounting surface and the chassis, so that the connection precision is improved, and the overall strength of the quick-change support is improved. The support assembly can further strengthen the chassis mounting surface and/or the battery pack mounting surface, so that the overall strength of the quick-change bracket can be further improved.

Description

Quick-change bracket and quick-change battery pack assembly comprising same

Technical Field

The utility model relates to an electric automobile trade electric field, in particular to quick change support and contain its quick change battery package assembly.

Background

At present, the emission of automobile exhaust is still an important factor of the problem of environmental pollution, and in order to treat the automobile exhaust, people develop natural gas automobiles, hydrogen fuel automobiles, solar energy automobiles and electric automobiles to replace fuel oil type automobiles. The current electric automobile mainly comprises a direct charging type and a quick-change type. Due to the limitation of charging time and places, many new energy electric vehicles gradually adopt a mode of rapidly replacing batteries for energy supply.

When the batteries are replaced, the battery replacing device takes down the insufficient battery from the electric automobile and transfers the insufficient battery to the battery transferring device, and the battery transferring device transfers the insufficient battery to the battery cabin for charging. And then, the battery transfer equipment takes out the full-charge battery from the battery bin and transfers the full-charge battery to the battery replacing equipment, and the battery replacing equipment installs the full-charge battery on the electric automobile.

In the battery replacement technology, a quick-change bracket on an electric vehicle chassis is particularly important, and the quick-change bracket is a key factor that a battery pack can be quickly installed on the electric vehicle chassis, detached from the electric vehicle chassis and kept stable in the running process of the electric vehicle.

In the prior art, the battery pack matched with the quick-change bracket is designed into a frame structure matched with the quick-change bracket in shape, namely, the battery pack comprises two longitudinal beams which are arranged oppositely, and a front beam and a rear beam which are positioned between the two longitudinal beams, namely, the front beam, the longitudinal beams, the rear beam and the longitudinal beams are sequentially connected end to end and are positioned on the same horizontal plane. After the battery pack is connected to the quick-change support, the battery pack is located in a hollow area formed by the frame structure.

The longitudinal beam comprises a chassis mounting surface which is used for being connected with a chassis of the electric automobile and faces the chassis, and a battery pack mounting surface which is used for being connected with a battery pack and faces the other opposite longitudinal beam. In the prior art, when a chassis mounting surface needs to be reinforced in order to ensure the reliability of connection between a side member and a chassis of an electric vehicle, the side member is generally made of a material with high strength, the thickness of the whole side member is increased, or a complicated reinforcing structure is added to the back of the chassis mounting surface. So set up for the manufacturing cost of longeron is higher, overall structure is comparatively complicated or comparatively heavy.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome the shortcoming that the manufacturing cost of longeron among the prior art is higher, overall structure is comparatively complicated or comparatively heavy, provide a quick change support and contain its quick change battery package assembly.

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

a quick-change bracket is arranged on a chassis of an electric automobile and can be used for connecting and fixing a quick-change battery pack on the chassis, the quick-change bracket comprises two oppositely arranged longitudinal beams, each longitudinal beam at least comprises a chassis mounting surface which is used for being connected with the chassis and faces upwards and a battery pack mounting surface which is connected with the quick-change battery pack and faces towards the opposite longitudinal beam, and a plurality of first bulges are arranged at intervals on the chassis mounting surface along the length direction of the longitudinal beam and used for being attached to and connected with the chassis;

the quick-change bracket is provided with a support component at least at a position corresponding to the first bulge, and the support component is positioned on the back of the chassis mounting surface and/or the battery pack mounting surface.

In this scheme, the setting of first bulge has reduced the contact surface on chassis installation face and chassis, is favorable to improving connection accuracy, can reduce simultaneously on the longeron with the chassis not processing precision requirement in contact with the region, is favorable to reducing the processing cost of quick change support. In addition, the first bulge is arranged to improve the strength of the longitudinal beam through a simple structure, and the overall strength of the quick-change support is further improved. The support component is located the back of chassis installation face and/or is located the back of battery package installation face, and the support component can further strengthen chassis installation face and/or battery package installation face to can further improve the bulk strength of quick change support, also can ensure the stability of being connected between quick change support and the chassis. The structure enables the longitudinal beam to be designed to be narrow in width, the strength of the longitudinal beam can meet the requirement for quick replacement of the battery pack of the electric automobile, the longitudinal beam is narrow, the reserved battery pack placing space can be larger under the condition that the chassis of the electric automobile is determined, and the longitudinal beam is favorable for accommodating the battery pack with larger size to provide more energy for the electric automobile.

Preferably, the quick-change bracket further comprises a front beam connected between the two longitudinal beams, the front beam is used for arranging a vehicle-end electric connector, the vehicle-end electric connector is used for being electrically connected with a battery-end electric connector of the quick-change battery pack, and the front beam is provided with a connecting part extending outwards to be connected with the chassis;

the end part of the front beam is provided with a first bending part extending backwards, and the first bending part is attached to one end of the longitudinal beam and connected with the longitudinal beam.

In the scheme, the first bending part is attached to the longitudinal beam, so that the contact area between the front beam and the longitudinal beam is increased, and the connection reliability of the front beam and the longitudinal beam is improved; and meanwhile, the connecting part which is arranged on the front beam and extends outwards can enhance the connecting strength with the chassis so as to ensure the stability of the quick-change support.

Preferably, the chassis mounting surface of one end of the longitudinal beam close to the front beam is provided with the first protruding part, and the top of the first protruding part is further provided with a second protruding part.

In this scheme, be provided with the second bulge on first bulge, be equivalent to strengthen once more in corresponding position department, further improved the intensity of here, and then be convenient for realize the reliable connection of longeron and chassis, front-axle beam.

Preferably, the quick-change support further comprises a back beam connected between the two longitudinal beams, the back beam is provided with a horizontal section and connecting sections respectively connected with two ends of the horizontal section, the horizontal section is located above the longitudinal beams, one end, far away from the horizontal section, of the connecting section is connected with the longitudinal beams, and the connecting sections are of arc-shaped structures and gradually increase in cross-sectional area along the direction far away from the horizontal section.

In this scheme, the back beam horizontal segment sets up at the top of longeron, has reduced the space that the quick change support took on the length direction of longeron, can avoid the back beam to the restriction of installing the battery package in the quick change support on the length direction of longeron to can improve the adaptation scope of quick change support. In addition, the connecting section of the back beam is set to be gradually increased in cross-sectional area along the direction far away from the horizontal section, so that the shape that the two ends of the back Liang Cheng are wide and the middle part of the back 5363 is narrow is beneficial to improving the strength of the two ends of the back beam, and the reliable connection of the back beam and an external structure (such as a longitudinal beam and a chassis) is convenient to realize.

Preferably, two ends of the horizontal section are provided with symmetrically arranged fixing holes, and the rear beam is mounted on the chassis through the fixing holes;

and/or a step part is formed at the end part of the connecting section, which is far away from one end of the horizontal section, and the rear beam is lapped and clamped with the longitudinal beam through the step part.

In the scheme, the rear beam is conveniently connected with the chassis of the electric automobile through the fixing holes, and the rear beam is connected with the chassis, so that the reliability of connection between the quick-change bracket and the chassis of the electric automobile is improved; meanwhile, the symmetrical arrangement of the fixing holes is beneficial to the balance of stress of the back beam. The step portion can make back beam and longeron realize the primary localization, has both made things convenient for being connected of longeron and back beam, can improve the reliability of both connections again.

Preferably, each of the first protruding portions of the longitudinal beam is provided with a first mounting hole and/or a positioning hole, the first mounting hole is used for being connected with the chassis so that the longitudinal beam is fixed with the chassis, the positioning hole is used for being matched with a positioning piece on the chassis so that the longitudinal beam is connected with the chassis, and the supporting component is provided with a first through hole corresponding to the first mounting hole and/or a second through hole corresponding to the positioning hole.

In this scheme, the locating hole can play the positioning action to quick change support mounting when to the chassis, is favorable to the longeron to install on the chassis and targets in place, also is favorable to improving convenience and installation reliability of quick change support mounting on the chassis. The first bulge of chassis installation face is convenient for realize being connected with the chassis realization in the setting of first mounting hole. The arrangement of the first through holes enables the supporting component to strengthen the chassis mounting surface on the basis that the chassis mounting surface and the chassis are not influenced to be connected and fixed, and the arrangement of the second through holes enables the supporting component to strengthen the chassis mounting surface on the basis that the chassis and the chassis are not influenced to be positioned and connected.

Preferably, the longitudinal beam is provided with a second mounting hole on the battery pack mounting surface, the second mounting hole is used for mounting a locking mechanism and a positioning mechanism which are used for connecting the quick-change battery pack on the battery pack mounting surface, and the support assembly is provided with a third through hole corresponding to the second mounting hole.

In this scheme, the setting of third through-hole makes the supporting component can realize the enhancement to battery package installation face on the basis that does not influence locking mechanism and positioning mechanism installation.

Preferably, the supporting component comprises a first supporting plate, the first supporting plate is of an L-shaped structure and is provided with a horizontal connecting part and a vertical connecting part, the horizontal connecting part is attached to and connected to the back surface of the chassis mounting surface, the vertical connecting part is attached to the back surface of the battery pack mounting surface, the horizontal connecting part is provided with a first through hole corresponding to the first mounting hole and/or a second through hole corresponding to the positioning hole, and the vertical connecting part is provided with a third through hole corresponding to the second mounting hole.

In this scheme, first backup pad can be strengthened chassis installation face and battery package installation face simultaneously, can realize comparatively reliable enhancement effect through comparatively simple structure, and first backup pad also be convenient for be connected with the back of chassis installation face and the back of battery package installation face.

Preferably, along the length direction of the longitudinal beam, the length of the first supporting plate is not greater than that of the first protruding part, a recessed part is formed on the back surface of the chassis mounting surface at the position corresponding to the first protruding part, and the first supporting plate is mounted in the recessed part;

and/or, follow the length direction of longeron, the both ends of horizontal connecting portion have certainly the second bending portion of the tip downwardly extending of horizontal connecting portion, the both ends of vertical connecting portion have certainly the outside third bending portion that extends of the tip of vertical connecting portion, the second bending portion with third bending portion links to each other.

In this scheme, set up the length of first backup pad into the length that is not more than first bulge for first backup pad can closely laminate in order to play the additional strengthening with first bulge in the extension of first bulge, thereby can guarantee the enhancement of first bulge position department, and then can realize the reliable connection on chassis installation face and chassis. The depressed part can the holding first backup pad, and simultaneously, the depressed part can carry on spacingly to first backup pad, conveniently realizes being connected of first backup pad and chassis installation face, battery package installation face.

The intensity of horizontal connecting portion can be improved in the setting of the second portion of bending, and then be favorable to improving the enhancement effect of horizontal connecting portion to chassis installation face. Meanwhile, the strength of the vertical connecting part can be improved due to the third bent part, and the reinforcing effect of the vertical connecting part on the battery pack mounting surface is further improved.

Preferably, the support assembly further comprises a second support plate, the second support plate comprises a flat plate main body, one end face of the flat plate main body is connected with the back face of the battery pack mounting face, the other end face of the flat plate main body is provided with a flanging extending upwards, and the flanging is connected with the back face of the chassis mounting face, so that a cavity is formed between the second support plate and the back face of the chassis mounting face.

In this scheme, the second backup pad also can strengthen chassis installation face and battery package installation face simultaneously, and turn-ups sets up the intensity that can enough improve the second backup pad, is convenient for again realize with being connected of the back of chassis installation face. In addition, the arrangement of the cavity can realize reinforcement on the basis of not influencing the arrangement of other structures.

Preferably, a preset distance is reserved between the horizontal connecting part attached to the back surface of the chassis mounting surface and the flat plate main body, and a fourth through hole corresponding to the first through hole and/or a fifth through hole corresponding to the second through hole are/is formed in the flat plate main body.

In this scheme, the setting of fourth through-hole is convenient for supply to realize that chassis installation face and connecting piece and the mounting tool that the chassis is connected pass, can make the setting of second backup pad do not influence the being connected of chassis installation face and chassis, and the setting of fifth through-hole is convenient for supply to realize that chassis installation face and chassis's setting element complex structure and mounting tool pass, can make the setting of second backup pad do not influence the location and the being connected of chassis installation face and chassis.

Preferably, the support assembly further comprises a reinforcing column connected between the horizontal connecting portion and the panel body and having a through hole corresponding to the first through hole and the fourth through hole;

and/or, along the length direction of longeron, the length of second backup pad is greater than the length of first backup pad, the second backup pad still has the correspondence dodge district of third bend portion.

In the scheme, the reinforcing column is supported between the horizontal connecting part and the flat plate main body, so that the chassis mounting surface or the supporting component can be effectively prevented from deforming when being connected with the chassis, and in addition, the through hole is also convenient for the chassis mounting surface and the chassis connecting piece to pass through. The second backup pad can wrap up first backup pad, adopts first backup pad and second backup pad to realize the enhancement to battery package installation face and chassis installation face, and it is more excellent to strengthen the effect, and then can further improve the bulk strength of quick change support. In addition, the arrangement of the avoiding area enables the first supporting plate and the second supporting plate not to interfere with each other.

Preferably, the first protruding part is provided with a side wall opposite to the mounting surface of the battery pack, the side wall is provided with a limiting groove, a limiting part is arranged at a position corresponding to the second support plate, and the limiting part is embedded in the limiting groove;

and/or the second support plate is also provided with an extension part, the extension part extends in a plane parallel to the installation surface of the battery pack and is fixed on the back surface of the installation surface of the battery pack, and the extension part is connected with the flanging at one side of the flat plate main body.

In this scheme, the spacing groove can fix a position spacing portion, through the cooperation of spacing portion and spacing groove, can realize the reliable connection at the back of second backup pad and chassis installation face. The extension part improves the strength of the second support plate, is fixed on the back of the battery pack mounting surface, can further strengthen the battery pack mounting surface, and is favorable for improving the reliability of connection between the quick-change support and the battery pack.

The utility model also provides a quick change battery package assembly, quick change battery package assembly includes quick change battery package and above-mentioned quick change support, quick change battery package install in the quick change support.

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

in the quick-change support, the contact surface between the chassis mounting surface and the chassis is reduced due to the arrangement of the first protruding part, so that the connection precision is favorably improved, the machining precision requirement of the area, which is not in contact with the chassis, on the longitudinal beam can be reduced, and the machining cost of the quick-change support is favorably reduced. In addition, the arrangement of the first bulge improves the strength of the longitudinal beam with a simple structure, and is further beneficial to improving the overall strength of the quick-change support. The support component is located the back of chassis installation face and/or is located the back of battery package installation face, and the support component can further strengthen chassis installation face and/or battery package installation face to can further improve the bulk strength of quick change support, also can ensure the stability of being connected between quick change support and the chassis. The structure enables the longitudinal beam to be designed to be narrow in width, the strength of the longitudinal beam can meet the requirement for quick replacement of the battery pack of the electric automobile, the longitudinal beam is narrow, the reserved battery pack placing space can be larger under the condition that the chassis of the electric automobile is determined, and the longitudinal beam is favorable for accommodating the battery pack with larger size to provide more energy for the electric automobile.

Drawings

Fig. 1 is a schematic structural view of a quick-change holder according to a preferred embodiment of the present invention.

Fig. 2 is an enlarged structural view of a portion a in fig. 1, and a connection structural view of the rear beam and the longitudinal beam is shown in the enlarged structural view.

Fig. 3 is an enlarged structural view of a part B in fig. 1, and the structural view shows a connection structure of the front beam and the longitudinal beam.

Fig. 4 is a partial structural schematic view of a front beam in a quick-change bracket according to a preferred embodiment of the present invention.

Fig. 5 is a schematic structural view of a longitudinal beam in a quick-change bracket according to a preferred embodiment of the present invention.

Fig. 6 is another schematic structural view of a longitudinal beam in a quick-change bracket according to a preferred embodiment of the present invention.

Fig. 7 is an enlarged structural view of a portion C of fig. 6, showing a partial structure of the support assembly.

Fig. 8 is an enlarged structural view of a portion D in fig. 6, and shows another partial structure of the support assembly.

Fig. 9 is another schematic structural view of the longitudinal beam in the quick-change bracket according to a preferred embodiment of the present invention, in which the support assembly is not shown.

Fig. 10 is a schematic structural view of a support assembly in a quick-change holder according to a preferred embodiment of the present invention.

Fig. 11 is a schematic structural view of another support assembly in the quick-change holder according to a preferred embodiment of the present invention.

Fig. 12 is a schematic structural view of a first supporting plate in a quick-change bracket according to a preferred embodiment of the present invention.

Fig. 13 is a schematic structural view of one of the second support plates of the quick-change holder according to a preferred embodiment of the present invention.

Fig. 14 is a schematic structural view of another second supporting plate in the quick-change holder according to a preferred embodiment of the present invention.

Fig. 15 is a schematic structural view of a quick-change battery pack assembly according to a preferred embodiment of the present invention.

Description of reference numerals:

100 quick-change bracket

10 longitudinal beam

101 chassis mounting surface

102 battery pack mounting surface

1021 second mounting hole

103 first projection

1031 first mounting hole

1032 limiting groove

1033 positioning hole

104 support assembly

1041 first supporting plate

10411 first via hole

10412 third through hole

10413 horizontal connector

10414 vertical connecting part

10415 second bending part

10416 third bend

1042 second support plate

1043 Flat plate body

1044 edge turning

1045 fourth through hole

1046 reinforcing column

1047 through hole

1048 avoidance zone

1049 limiting part

1050 extension part

10501 sixth through hole

105 second projection

106 concave part

20 front beam

201 vehicle end electric connector

202 connecting part

203 first bending part

204 first inner beam

205 first outer beam

30 back beam

301 fixing hole

302 second inner beam

303 second outer beam

304 step part

305 horizontal segment

306 connecting segment

40 locking mechanism

200 quick-change battery pack

Detailed Description

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

As shown in fig. 1-15, the present embodiment discloses a quick-change battery pack assembly, which includes a quick-change bracket 100 and a quick-change battery pack 200, the quick-change bracket 100 is mounted on a chassis of an electric vehicle, and the quick-change battery pack 200 is movably mounted on the quick-change bracket 100, so that the quick-change battery pack 200 is connected and fixed on the chassis, so as to achieve quick-change and energy compensation of the quick-change battery pack 200 on the electric vehicle.

The structure of the quick-change holder 100 is explained in detail below with reference to fig. 1-14.

The quick-change bracket 100 comprises two oppositely arranged longitudinal beams 10, each longitudinal beam 10 at least comprises a chassis mounting surface 101 which is used for being connected with a chassis and faces upwards and a battery pack mounting surface 102 which is connected with a quick-change battery pack 200 and faces to the opposite longitudinal beam 10, and the chassis mounting surface 101 is provided with a plurality of first protruding parts 103 which are arranged at intervals along the length direction of the longitudinal beam 10, and the plurality of first protruding parts 103 are used for being attached and connected with the chassis. The quick-change bracket 100 is provided with a support assembly 104 at least at a position corresponding to the first protrusion 103, and the support assembly 104 is positioned at the back of the chassis mounting surface 101 and/or the battery pack mounting surface 102.

In the embodiment, the arrangement of the first protruding portion 103 reduces the contact surface between the chassis mounting surface 101 and the chassis, which is beneficial to improving the connection precision, and simultaneously, the requirement on the processing precision of the non-contact area between the longitudinal beam 10 and the chassis can be reduced, which is beneficial to reducing the processing cost of the quick-change bracket 100. In addition, the provision of the first projecting portion 103 improves the strength of the side member 10 with a simple structure, thereby contributing to an improvement in the overall strength of the quick-change bracket 100. The support assembly 104 is located on the back of the chassis mounting surface 101 and/or on the back of the battery pack mounting surface 102, and the support assembly 104 can further reinforce the chassis mounting surface 101 and/or the battery pack mounting surface 102, so that the overall strength of the quick-change bracket 100 can be further improved. Meanwhile, the arrangement is also beneficial to reducing the overall weight of the quick-change bracket 100, and the connection stability between the quick-change bracket 100 and the chassis connection can be ensured. According to the structure, the longitudinal beam 10 can be designed to be narrow in width, the strength of the longitudinal beam can meet the requirement of quick replacement of the battery pack of the electric automobile, and the longitudinal beam 10 is narrow, so that the reserved battery pack placing space can be larger under the condition that the chassis of the electric automobile is determined, and the longitudinal beam is favorable for accommodating the battery pack with larger size to provide more energy for the electric automobile.

It should be noted that, in the above-mentioned longitudinal beam 10 having the upward chassis mounting surface 101, "upward" is a relative concept, and since the quick-change bracket 100 is disposed on the chassis of the electric vehicle, the chassis mounting surface 101 is correspondingly located below the chassis.

In addition, the number of the first protruding portions 103 and the number of the supporting members 104 are not limited, and may be provided corresponding to the fixing position of the chassis according to the chassis mounting surface 101.

As shown in fig. 1, 3 and 4, the quick-change bracket 100 further includes a front beam 20 and a rear beam 30 connected between the two longitudinal beams 10, wherein the front beam 20 and the rear beam 30 are disposed opposite to each other and are respectively located at two ends of the two longitudinal beams 10. The front beam 20 is used for arranging a vehicle end electrical connector 201, the vehicle end electrical connector 201 is used for electrically connecting with a battery end electrical connector of the quick-change battery pack 200, and the front beam 20 is provided with a connecting part 202 extending outwards to be connected with a chassis. The end portion of the front rail 20 has a first bent portion 203 extending rearward, and the first bent portion 203 is attached to one end of the side rail 10 and connected to the side rail 10. The first bending part 203 is attached to the longitudinal beam 10, so that the contact area between the front beam 20 and the longitudinal beam 10 is increased, and the connection reliability between the front beam 20 and the longitudinal beam 10 is improved; the outwardly extending coupling 202 provided on the front beam 20 can enhance the coupling strength with the chassis to ensure the stability of the quick-change bracket 100.

In a preferred embodiment, as shown in fig. 4, the front beam 20 is formed by butt-welding a first inner beam 204 and a first outer beam 205, and the connecting portions 202 are disposed on the first outer beam 205, symmetrically disposed on both sides of the mounting position of the vehicle-end electrical connector 201, and extend outward away from the first inner beam 204, so that the front beam 20 is connected to the chassis through the connecting portions 202. The first bent portion 203 extends from the end of the first outer beam 205 toward the direction near the first inner beam 204 and beyond the first inner beam 204. The first inner beam 204 and the first outer beam 205 have corresponding receiving areas of the vehicle end electrical connector 201 thereon, and the vehicle end electrical connector 201 is mounted in the receiving areas such that the electrical contacts of the vehicle end electrical connector 201 are located on the first inner beam 204 side toward the rear beam 30.

In order to further improve the reliability of the connection between the longitudinal beam 10 and the front beam 20, in a preferred embodiment, as shown in at least fig. 1, 3 and 5, a first protrusion 103 is provided on a chassis mounting surface 101 of the longitudinal beam 10 near one end of the front beam 20, and a second protrusion 105 is further provided on the top of the first protrusion 103.

The second projecting portion 105 is provided on the first projecting portion 103, which is equivalent to re-strengthening at the corresponding position, further improving the strength of the corresponding position, and further facilitating reliable connection between the longitudinal beam 10 and the chassis and the front beam 20.

In other alternative embodiments, the manner of further reinforcing is not limited to adding the second protrusion 105, and other reinforcing structures may be added at the position corresponding to the first protrusion 103 on the back surface of the chassis mounting surface 101, or the structure of the support assembly 104 at this position is set to be the structure with better reinforcing effect.

As shown in fig. 1-2, the back beam 30 has a horizontal section 305 and a connecting section 306 respectively connected to two ends of the horizontal section 305, the horizontal section 305 is located above the longitudinal beam 10, the connecting section 306 is connected to the longitudinal beam 10 at an end far from the horizontal section 305, the connecting section 306 is configured in an arc structure and has a gradually changing diameter, that is, the cross-sectional area of the connecting section 306 gradually increases along the connecting section 306 from the end near the horizontal section 305 to the direction far from the horizontal section 305. The horizontal section 305 of the back beam 30 is arranged at the top of the longitudinal beam 10, so that the space occupied by the quick-change bracket 100 in the length direction of the longitudinal beam 10 is reduced, the limitation of the back beam 30 on a battery pack installed in the quick-change bracket 100 in the length direction of the longitudinal beam 10 can be avoided, and the adaptation range of the quick-change bracket 100 can be improved. In addition, the connecting section 306 of the back beam 30 is configured such that the cross-sectional area gradually increases along the direction away from the horizontal section 305, so that the back beam 30 is in a shape with two wide ends and a narrow middle, which is beneficial to improving the strength of the two ends of the back beam 30, and is convenient for realizing the reliable connection between the back beam 30 and the external structure (such as the longitudinal beam 10 and the chassis).

In other alternative embodiments, the rear rail 30 may also be arranged directly at the end of the longitudinal rail 10.

Further, as shown in fig. 1, fixing holes 301 are symmetrically formed at both ends of a horizontal section 305 of the back beam 30, and the back beam 30 is mounted to the chassis through the fixing holes 301. The rear beam 30 is connected with the chassis of the electric automobile through the fixing hole 301, and the rear beam 30 is connected with the chassis, so that the reliability of connection between the quick-change bracket 100 and the chassis of the electric automobile is improved; meanwhile, the symmetrical arrangement of the fixing holes is beneficial to the balance of stress of the back beam.

The number of the fixing holes 301 is not limited herein, and may be set according to actual fixing requirements.

In a preferred embodiment, the back beam 30 is formed by butt-welding the second inner beam 302 and the second outer beam 303, and the fixing hole 301 penetrates the second inner beam 302 and the second outer beam 303.

In another preferred embodiment, in order to facilitate the connection between the longitudinal beam 10 and the back beam 30, as shown in fig. 2, a step portion 304 is formed at an end portion of the back beam 30, that is, an end of the connecting section 306 away from the horizontal section 305, and the back beam 30 overlaps and engages with the longitudinal beam 10 through the step portion 304. The step portion 304 can realize initial positioning of the back beam 30 and the longitudinal beam 10, facilitate connection between the longitudinal beam 10 and the back beam 30, and improve connection reliability between the two.

The structure of the stringer 10 is described in detail below with reference to fig. 1 and 3-14.

Specifically, the longitudinal beam 10 is provided with a first mounting hole 1031 on the first protruding portion 103, the first mounting hole 1031 is used for connecting the chassis to fix the longitudinal beam 10 with the chassis, the supporting component 104 is provided with a first through hole 10411 corresponding to the first mounting hole 1031, and the first mounting hole 1031 is provided to facilitate connection of the first protruding portion 103 of the chassis mounting surface 101 with the chassis. The first through hole 10411 is provided to enable the supporting component 104 to reinforce the chassis installation surface 101 without affecting the connection and fixation of the chassis installation surface 101 and the chassis.

The longitudinal beam 10 is further provided with positioning holes 1033 (shown in fig. 5) on the first protruding portion 103, and the positioning holes 1033 are used for matching with positioning parts on the chassis to facilitate connection of the longitudinal beam 10 with the chassis. For each first protruding portion 103, only the first mounting hole 1031 or only the positioning hole 1033 may be provided on the first protruding portion 103; of course, the first mounting hole 1031 and the positioning hole 1033 may be provided on the same first protruding portion 103 according to actual requirements. The supporting component 104 is provided with a second through hole corresponding to the positioning hole. The positioning holes 1033 can position the mounting positions of the support assemblies 104, so that the support assemblies 104 can be mounted on the longitudinal beams 10 in place, and the mounting reliability of the positioning mechanisms or the locking mechanisms 40 connected to the battery pack mounting surface 102 can be improved. The second through hole is arranged so that the supporting component 104 can reinforce the chassis mounting surface 101 without influencing the positioning and connection of the chassis mounting surface 101 and the chassis.

The longitudinal beam 10 is provided with a second mounting hole 1021 on the battery pack mounting surface 102, the second mounting hole 1021 is used for mounting the locking mechanism 40 and the positioning mechanism for connecting the quick-change battery pack 200 on the battery pack mounting surface 102, and the support assembly 104 is provided with a third through hole 10412 corresponding to the second mounting hole 1021. The third through hole 10412 is provided to allow the support assembly 104 to reinforce the battery pack mounting surface 102 without affecting the mounting of the locking mechanism 40 and the positioning mechanism.

According to the actual design requirement, the supporting members 104 may be set to different structures, the number of the supporting members 104 may also be set according to the actual requirement, and when the number of the supporting members 104 is multiple, the number of the supporting members 104 may also be different, which is not limited herein. For example, the support assembly 104 may include only the first support plate 1041, only the second support plate 1042, or both the first support plate 1041 and the second support plate 1042, and the structures of the first support plate 1041 and the second support plate 1042 may be different.

In a preferred embodiment, the supporting member 104 includes a first supporting plate 1041, the first supporting plate 1041 is an L-shaped structure and has a horizontal connecting portion 10413 and a vertical connecting portion 10414, the horizontal connecting portion 10413 is attached to and connected to the back of the chassis mounting surface 101, the vertical connecting portion 10414 is attached to the back of the battery pack mounting surface 102, the horizontal connecting portion 10413 has a first through hole 10411 corresponding to the first mounting hole 1031 and/or a second through hole corresponding to the positioning hole, and the vertical connecting portion 10414 has a third through hole 10412 corresponding to the second mounting hole 1021. Wherein, first backup pad 1041 can strengthen chassis installation face 101 and battery package installation face 102 simultaneously, can realize comparatively reliable reinforcing effect through comparatively simple structure, and first backup pad 1041 also is convenient for to be connected with the back of chassis installation face 101 and the back of battery package installation face 102.

In order to ensure the reinforcing effect, the length of the first support plate 1041 is set to be not more than the length of the first protrusion 103 along the length direction of the longitudinal beam 10, a recess 106 is formed on the back surface of the chassis mounting surface 101 at the position corresponding to the first protrusion 103, and the first support plate 1041 is installed in the recess 106.

The length of the first supporting plate 1041 is set to be not more than the length of the first protruding portion 103, so that the first supporting plate can be tightly attached to the first protruding portion within the extension range of the first protruding portion to play a role in reinforcement, the reinforcement at the position of the first protruding portion 103 can be ensured, and the chassis mounting surface 101 can be reliably connected with the chassis; the length of first backup pad is not more than the length of first bulge simultaneously for whole first backup pad is all at the extension of first bulge, thereby first backup pad simple structure, and the machine-shaping of being convenient for. Depressed part 106 can the holding first backup pad 1041, and simultaneously, depressed part 106 can carry on spacingly to first backup pad 1041, conveniently realizes being connected of first backup pad 1041 and chassis installation face 101, battery package installation face 102.

In another preferred embodiment, the two ends of the horizontal connecting portion 10413 are arranged to have a second bent portion 10415 extending downward from the end of the horizontal connecting portion, the two ends of the vertical connecting portion 10414 have a third bent portion 10416 extending outward from the end of the vertical connecting portion, and the second bent portion 10415 is connected to the third bent portion 10416 along the length direction of the longitudinal beam 10. The second bending portion 10415 can improve the strength of the horizontal connecting portion 10413, and is further beneficial to improving the reinforcing effect of the horizontal connecting portion 10413 on the chassis mounting surface 101. Meanwhile, the third bent portion 10416 can improve the strength of the vertical connecting portion 10414, and is favorable for improving the reinforcing effect of the vertical connecting portion 10414 on the battery pack mounting surface 102.

In another preferred embodiment, the support assembly 104 further includes a second support plate 1042, the second support plate 1042 includes a plate body 1043, one end surface of the plate body 1043 is connected to the back surface of the battery pack mounting surface 102, the other end surface of the plate body 1043 has an upward extending flange 1044, and the flange 1044 is connected to the back surface of the chassis mounting surface 101, so that a cavity is formed between the second support plate 1042 and the back surface of the chassis mounting surface 101.

The second support plate 1042 can also reinforce the chassis mounting surface 101 and the battery pack mounting surface 102, and the arrangement of the turnup 1044 can improve the strength of the second support plate 1042 and facilitate the connection with the back surface of the chassis mounting surface 101. In addition, the arrangement of the cavity can realize reinforcement on the basis of not influencing the arrangement of other structures.

In another preferred embodiment, a preset distance is provided between the horizontal connecting portion 10413 attached to the back surface of the chassis mounting surface 101 and the flat plate main body 1043, and in this embodiment, the preset distance is not less than 30mm, but may be set as a practical requirement in practical application, or may be more than 30 mm. The plate body 1043 is provided with a fourth through hole 1045 corresponding to the first through hole 10411 and/or a fifth through hole corresponding to the second through hole. The fourth through hole 1045 is convenient for a connecting piece and an installation tool for connecting the chassis installation surface 101 and the chassis to pass through, so that the connection between the chassis installation surface 101 and the chassis is not affected by the arrangement of the second support plate 1042, the structural member and the installation tool for matching the chassis installation surface 101 and a positioning piece of the chassis are convenient for passing through by the arrangement of the fifth through hole, and the positioning and the connection between the chassis installation surface 101 and the chassis are not affected by the arrangement of the second support plate 1042.

In another preferred embodiment, in order to effectively prevent the chassis mounting surface 101 from deforming when being connected to the chassis, the support assembly 104 further includes a reinforcement pillar 1046, the reinforcement pillar 1046 is connected between the horizontal connecting portion 10413 and the plate body 1043, and has a through hole 1047 corresponding to the first through hole 10411 and the fourth through hole 1045. The through hole 1047 may be provided with an internal thread so that the connecting member for connecting the chassis and the side member is directly coupled to the reinforcing column 1046, or may be provided with a smooth inner surface so that the connecting member for connecting the chassis and the side member passes through and is fixed.

The reinforcing column 1046 is supported between the horizontal connecting portion 10413 and the slab main body 1043, so that the chassis mounting surface 101 or the supporting component can be effectively prevented from being deformed when being connected with the chassis, and in addition, the arrangement of the through hole 1047 is also convenient for realizing the passing or direct connection of the chassis mounting surface 101 and the chassis connecting piece.

In a preferred embodiment, the length of the second support plate 1042 is greater than that of the first support plate 1041 along the length direction of the longitudinal beam 10, and the second support plate 1042 further has an escape region 1048 corresponding to the third bend 10416. The second supporting plate 1042 can wrap the first supporting plate 1041, the battery pack mounting surface 102 and the chassis mounting surface 101 are reinforced by the first supporting plate 1041 and the second supporting plate 1042, the reinforcing effect is better, and the overall strength of the quick-change support 100 can be further improved. In addition, the avoidance region 1048 is provided so that interference between the first support plate 1041 and the second support plate 1042 does not occur.

Further, the first protrusion 103 has a side wall opposite to the battery pack mounting surface 102, the side wall has a limiting groove 1032, the corresponding position of the second support plate 1042 has a limiting portion 1049, and the limiting portion 1049 is embedded in the limiting groove 1032. The limiting groove 1032 can position the limiting portion 1049, and reliable connection between the second supporting plate 1042 and the back of the chassis mounting surface 101 can be realized through the matching of the limiting portion 1049 and the limiting groove 1032.

As shown in fig. 6 to 8, 11 and 14, for a particularly narrow region of the longitudinal beam 10, the second support plate 1042 further has an extension 1050, the extension 1050 extends in a plane parallel to the battery pack mounting surface 102 and is fixed to the back surface of the battery pack mounting surface 102, and the extension 1050 is connected to a flange 1044 on the side of the plate main body 1043. The extension 1050 improves the strength of the longitudinal beam and the second support plate 1042, the extension 1050 is fixed to the back of the battery pack mounting surface 102, the extension 1050 can further reinforce the battery pack mounting surface 102, the overall strength of the longitudinal beam 10 is improved, and the improvement of the reliability of connection between the quick-change bracket 100 and the battery pack is facilitated. The extending portion 1050 is provided with a sixth through hole 10501 corresponding to the second mounting hole 1021 on the battery pack mounting surface 102, and similar to the fourth through hole 1045, the sixth through hole 10501 also facilitates mounting the locking mechanism 40 on the battery pack mounting surface 102.

It should be noted that the extension 1050 also has a flange 1044 on the side away from the plate body 1043.

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

Claims

1. A quick-change bracket is arranged on a chassis of an electric automobile and can be used for connecting and fixing a quick-change battery pack on the chassis, and the quick-change bracket is characterized by comprising two oppositely arranged longitudinal beams, wherein each longitudinal beam at least comprises a chassis mounting surface which is used for being connected with the chassis and faces upwards and a battery pack mounting surface which is connected with the quick-change battery pack and faces towards the opposite longitudinal beam;

2. The quick-change bracket according to claim 1, further comprising a front beam connected between the longitudinal beams for providing a vehicle-end electrical connector for electrically connecting with a battery-end electrical connector of the quick-change battery pack, the front beam having an outwardly extending coupling portion for coupling with the chassis;

3. The quick-change bracket according to claim 2, wherein the first protrusion is provided on the chassis mounting surface of the longitudinal beam at an end thereof adjacent to the front beam, and a second protrusion is further provided on a top portion of the first protrusion.

4. The quick-change bracket according to claim 1, further comprising a back beam connected between the two longitudinal beams, wherein the back beam has a horizontal section and connecting sections respectively connected with two ends of the horizontal section, the horizontal section is located above the longitudinal beams, one end of the connecting section, which is far away from the horizontal section, is connected with the longitudinal beams, and the connecting section is of an arc-shaped structure and gradually increases in cross-sectional area along the direction far away from the horizontal section.

5. The quick-change bracket according to claim 4, wherein the horizontal section is provided with symmetrically arranged fixing holes at two ends, and the rear beam is mounted on the chassis through the fixing holes;

6. The quick-change bracket according to claim 1, wherein the longitudinal beam is provided with a first mounting hole and/or a positioning hole on each first protrusion, the first mounting hole is used for connecting the chassis to fix the longitudinal beam with the chassis, the positioning hole is used for matching with a positioning part on the chassis to facilitate the connection of the longitudinal beam with the chassis, and the support assembly is provided with a first through hole corresponding to the first mounting hole and/or a second through hole corresponding to the positioning hole.

7. The quick-change bracket according to claim 6, wherein the longitudinal beam is provided with a second mounting hole on the battery pack mounting surface, the second mounting hole is used for mounting a locking mechanism and a positioning mechanism which are connected with the quick-change battery pack on the battery pack mounting surface, and the support component is provided with a third through hole corresponding to the second mounting hole.

8. The quick-change bracket according to claim 7, wherein the support assembly comprises a first support plate having an L-shaped configuration and having a horizontal connecting portion and a vertical connecting portion, the horizontal connecting portion is attached to and connected to the back of the chassis mounting surface, the vertical connecting portion is attached to the back of the battery pack mounting surface, the horizontal connecting portion has the first through hole corresponding to the first mounting hole and/or the second through hole corresponding to the positioning hole, and the vertical connecting portion has a third through hole corresponding to the second mounting hole.

9. The quick-change holder according to claim 8, wherein the first support plate is no longer than the first projection along the longitudinal length of the longitudinal beam, a recess is formed in the back of the chassis mounting surface at a position corresponding to the first projection, and the first support plate is mounted in the recess;

and/or, follow the length direction of longeron, the both ends of horizontal connecting portion have certainly the second bending portion that extends under the tip of horizontal connecting portion, the both ends of vertical connecting portion have certainly the outside third bending portion that extends of tip of vertical connecting portion, the second bending portion with third bending portion links to each other.

10. The quick-change bracket according to claim 9, wherein the support assembly further comprises a second support plate, the second support plate comprises a plate body, one end surface of the plate body is connected with the back surface of the battery pack mounting surface, the other end surface of the plate body is provided with an upward extending flange, and the flange is connected with the back surface of the chassis mounting surface, so that a cavity is formed between the second support plate and the back surface of the chassis mounting surface.

11. The quick-change bracket according to claim 10, wherein a predetermined distance is provided between the horizontal connecting portion attached to the back surface of the chassis mounting surface and the plate body, and a fourth through hole corresponding to the first through hole and/or a fifth through hole corresponding to the second through hole is provided on the plate body.

12. The quick-change holder according to claim 11, wherein the support assembly further comprises a reinforcing post connected between the horizontal connecting portion and the plate body and having a through hole corresponding to the first through hole and the fourth through hole; and/or, along the length direction of longeron, the length of second backup pad is greater than the length of first backup pad, the second backup pad still has the correspondence dodge district of third bend portion.

13. The quick-change bracket according to claim 10, wherein the first protrusion has a side wall opposite to the battery pack mounting surface, the side wall has a limiting groove, and the second support plate has a limiting portion at a corresponding position, and the limiting portion is embedded in the limiting groove;

and/or the second support plate is also provided with an extension part, the extension part extends in a plane parallel to the battery pack mounting surface and is fixed on the back surface of the battery pack mounting surface, and the extension part is connected with the flanging at one side of the flat plate main body.

14. A quick-change battery pack assembly, comprising a quick-change battery pack and a quick-change cradle according to any one of claims 1-13, the quick-change battery pack being mounted in the quick-change cradle.