Quick-change support, quick-change assembly and electric automobile

Abstract

The utility model provides a quick-change support, a quick-change assembly and an electric automobile. The quick-change support comprises a first cross beam which is provided with a vehicle end connector used for being connected with a battery pack; the first connecting part and the second connecting part are arranged at the end, opposite to the first cross beam, of the quick-change support in the length direction of the battery pack, the first connecting part is used for being connected with the electric automobile, the second connecting part is used for being connected with the battery pack, and the first connecting part is detachably connected with the second connecting part. According to the quick-change support, the battery pack is connected with the electric automobile at the two ends of the battery pack in the length direction through the first cross beam, the first connecting part and the second connecting part. When the automobile shakes in the running process, the amplitude of relative movement between the battery pack and the electric automobile can be reduced, and the connection reliability between the battery pack and the electric automobile is improved. And the first connecting part and the second connecting part are detachably connected, so that battery replacement of the electric automobile is facilitated.

Description

Technical Field

[0001] The utility model relates to a quick-change bracket, a quick-change assembly and an electric vehicle. Background Art

[0002] At present, new energy vehicles, especially electric vehicles, are in a rapid development stage. Electric vehicles mainly include direct charging and quick-change types. Among them, quick-change electric vehicles have better development prospects due to their shorter battery replacement time and convenient use.

[0003] For quick-change electric vehicles, the battery pack is installed on a quick-change bracket, which cooperates with the vehicle-end bracket set on the body of the electric vehicle to install the battery pack on the electric vehicle. The common quick-change brackets on the market usually have crossbeams at both ends along the length of the battery pack. During the driving process of the electric vehicle, the electric vehicle will also generate acceleration along the length of the battery pack. The battery pack is easy to shake and easily produce relative displacement with the body, which is not conducive to the connection reliability between the battery pack and the body, nor is it conducive to the safe use of the battery pack. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defect in the prior art that the battery pack is prone to relative displacement with the vehicle body, which is not conducive to the reliability of the connection between the battery pack and the vehicle body, and to provide a quick-change bracket, a quick-change assembly and an electric vehicle.

[0005] The utility model solves the above technical problems through the following technical solutions:

[0006] A quick-change bracket, used for realizing a detachable connection between a battery pack and an electric vehicle, the quick-change bracket comprising a first crossbeam, a vehicle-end connector being arranged on the first crossbeam, the vehicle-end connector being used for connecting with the battery pack;

[0007] The quick-change bracket also includes a first connecting portion and a second connecting portion. In the length direction of the battery pack, the first connecting portion and the second connecting portion are arranged at an end of the quick-change bracket opposite to the first crossbeam. The first connecting portion is used to connect to the electric vehicle, and the second connecting portion is used to connect to the battery pack. The first connecting portion and the second connecting portion are detachably connected.

[0008] In this solution, the battery pack can be connected to the electric vehicle at both ends of the battery pack in the length direction through the first crossbeam, the first connecting part and the second connecting part. When the electric vehicle shakes during driving, the relative movement between the battery pack and the electric vehicle can be reduced, thereby improving the connection reliability between the battery pack and the electric vehicle. The first connecting part and the second connecting part are detachably connected, which is also convenient for battery replacement in the electric vehicle.

[0009] Preferably, the second connecting portion is hooked to the first connecting portion.

[0010] In this solution, a hanging method is adopted to facilitate the battery replacement equipment to quickly replace the battery of the electric vehicle through chassis battery replacement. Taking the installation of the battery pack as an example, when the battery replacement equipment lifts the battery pack to the preset position at the bottom of the vehicle body and evacuates, the battery pack's own gravity can be used to achieve the connection and coordination between the second connection part and the first connection part. The operation is simple and conducive to achieving reliable connection between the battery pack and the vehicle body.

[0011] Preferably, the second connecting portion includes a column and a limiting portion, the column extends upward, and the limiting portion is connected to the top of the column and extends outward along the outer side wall of the column;

[0012] Wherein, the second connecting portion is hung on the first connecting portion through the limiting portion.

[0013] In this solution, the column is extended upward, which is equivalent to raising the position of the limit part installed thereon. On the one hand, the limit part is closer to the first connection part, so as to facilitate the connection between the limit part and the first connection part. On the other hand, the setting of the column also provides more operating space for the connection between the limit part of the second connection part and the first connection part, which is conducive to the reliable connection between the second connection part and the first connection part. In addition, with the above-mentioned structural setting, the structure of the second connection part is simple, which is also conducive to simplifying the structural setting of the first connection part matched therewith, which is conducive to simplifying the structure of the quick-change bracket and facilitating the reliable connection between the battery pack and the body of the electric vehicle.

[0014] Preferably, the limiting portion extends outward along both sides of the column in the width direction of the battery pack, and the limiting portion and the column form a "T"-shaped structure;

[0015] And / or, the first connecting portion is provided with a connecting groove, the bottom wall of the connecting groove is provided with an opening portion, the connecting groove is used to accommodate the limiting portion and the limiting portion is mounted on the bottom wall of the connecting groove, and the column is passed through the opening portion.

[0016] In the present solution, the above-mentioned structural setting is adopted, and the construction of the "T"-shaped structure is equivalent to that both ends of the limiting part can cooperate with the first connecting part and achieve hanging through it. The contact area is large, and both ends of the limiting part can be fulcrums, and the balance is good, so that the second connecting part can be connected to the first connecting part more conveniently and reliably, and then the battery pack can be conveniently and reliably connected to the electric vehicle.

[0017] In addition, the battery pack's own gravity allows the limiting part and the bottom wall of the connecting groove to fit naturally. When the electric vehicle shakes in the width direction during driving, the risk of the limiting part detaching from the connecting groove can be reduced through the cooperation of the column and the opening, which is beneficial to improving or ensuring the reliability of the connection between the battery pack and the body of the battery car.

[0018] Preferably, the second connecting portion further includes a connecting bracket, an extending portion is provided on the top of the connecting bracket, the extending portion extends in a direction away from the battery pack, and the column is connected to the extending portion and is spaced apart from the battery pack.

[0019] In this solution, the above-mentioned structural setting is adopted, and the first connection part can be accommodated in the interval between the column and the side wall of the battery pack, or an operating space is provided for the connection between the second connection part and the first connection part, which can reduce the overall space occupied in the height direction when the second connection part cooperates with the first connection part. In addition, when the electric vehicle shakes along the length direction of the battery pack during driving, the connecting bracket can also limit the movement of the battery pack or the displacement of the battery pack to a certain extent, which can further reduce the amplitude of the relative movement between the battery pack and the electric vehicle, which is conducive to improving the connection reliability between the battery pack and the electric vehicle.

[0020] Preferably, the connecting bracket is provided with reinforcing ribs along the height direction, and the top of the reinforcing ribs is connected to the extending portion;

[0021] And / or, the first connecting portion is provided with a connecting groove, the connecting groove is used to accommodate the limiting portion, and the connecting groove is arranged on a side of the first connecting portion away from the battery pack.

[0022] In this solution, by providing reinforcing ribs, the load-bearing capacity of the connecting bracket in the height direction can be increased, the risk of the extension part breaking can be reduced, and it is beneficial to improve or ensure the safety of the quick-change bracket during use. In addition, the connecting groove is provided on the side of the first connecting part away from the battery pack, and the position where the limiting part cooperates or hangs with the connecting groove of the second connecting part has a certain distance from the side wall of the battery pack. The distance can accommodate part of the first connecting part or provide an operating space for the connection between the limiting part and the first connecting part. On the basis of facilitating the connection between the second connecting part and the first connecting part, it is also beneficial to achieve the compactness of the overall structure. Accordingly, when the car shakes along the length direction of the battery pack during driving, the displacement of the battery pack can also be limited or the displacement amount of the battery pack can be limited, so that the amplitude of the relative movement between the battery pack and the electric vehicle can be further reduced, which is beneficial to improve the connection reliability between the battery pack and the electric vehicle.

[0023] Preferably, the quick-change bracket includes a second crossbeam;

[0024] The second cross beam includes an inner beam, the inner beam is connected to a plurality of second connection parts in a width direction of the battery pack, and the second connection part is connected to the battery pack through the inner beam;

[0025] And / or, the second cross beam includes an outer beam, the outer beam connects a plurality of the first connection parts in a width direction of the battery pack, and the first connection parts are connected to the electric vehicle through the outer beam.

[0026] In this solution, the arrangement of multiple second connection parts and multiple first connection parts provides multiple installation points for the connection between the battery pack and the electric vehicle, which is conducive to achieving a more reliable connection. In addition, the arrangement of the inner beam and the outer beam is conducive to ensuring that the positions of the multiple second connection parts and the multiple first connection parts meet the preset requirements, and the second connection parts and the first connection parts can be installed on the battery pack and the electric vehicle relatively conveniently, thereby facilitating the overall installation of the first connection parts and the second connection parts.

[0027] Preferably, the quick-change bracket is provided with a plurality of the first connecting parts and the second connecting parts in the width direction of the battery pack;

[0028] The number of the first connection parts is equal to the number of the second connection parts; and / or, a plurality of the second connection parts are respectively connected to the battery pack, and a plurality of the first connection parts are respectively connected to the electric vehicle.

[0029] In this solution, by providing a plurality of first connecting parts and second connecting parts, it is helpful to improve the reliability of the connection between the battery pack and the electric vehicle in the length direction, thereby further reducing the relative shaking between the battery pack and the electric vehicle. In addition, the plurality of second connecting parts are respectively connected to the battery pack, and the plurality of first connecting parts are respectively connected to the electric vehicle, which facilitates the flexible installation of the second connecting parts and the first connecting parts, and can be adjusted accordingly according to different electric vehicle and battery pack models, which is helpful to expand the application range of the quick-change bracket.

[0030] Preferably, the vehicle-end connector includes a vehicle-end electrical connector and a vehicle-end liquid cooling connector, wherein the vehicle-end electrical connector is used to be electrically connected to the battery pack, and the vehicle-end liquid cooling connector is used to perform water cooling circulation with the battery pack;

[0031] And / or, the quick-change bracket further includes a longitudinal beam, and the longitudinal beam is arranged on both sides of the battery pack along the width direction.

[0032] In this solution, the vehicle-end electrical connector and the vehicle-end liquid cooling connector are arranged on the same side, and the first crossbeam only needs to be provided with the vehicle-end connector, which is conducive to simplifying the structure of the quick-change bracket, while ensuring the connection reliability between the battery pack and the electric vehicle in the length direction of the battery pack. In addition, by providing a longitudinal beam, the connection between the battery pack and the electric vehicle is achieved at both ends of the battery pack in the width direction. When the electric vehicle shakes during driving, the amplitude of the relative movement between the battery pack and the electric vehicle can be further reduced, which is also conducive to the electrical connection and coolant exchange between the battery pack and the electric vehicle, and improves the connection reliability between the battery pack and the electric vehicle and the safety of the electric vehicle during driving.

[0033] The utility model also provides a quick-change assembly, which includes a battery pack and the above-mentioned quick-change bracket, wherein the first crossbeam is arranged at a first end in the length direction of the battery pack, and the first connecting part and the second connecting part are arranged at a second end in the length direction of the battery pack.

[0034] The utility model also provides an electric vehicle, which comprises the quick-change assembly.

[0035] The positive and progressive effects of the utility model are:

[0036] In the quick-change bracket, the battery pack can be connected to the electric vehicle at both ends in the length direction of the battery pack through the first crossbeam, the first connecting part and the second connecting part. When the electric vehicle shakes during driving, the amplitude of the relative movement between the battery pack and the electric vehicle can be reduced, thereby improving the connection reliability between the battery pack and the electric vehicle. The first connecting part and the second connecting part are detachably connected, which also facilitates battery replacement in the electric vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 The figure is a schematic structural diagram of a quick-change assembly according to a preferred embodiment of the utility model.

[0038] Figure 2 Another structural schematic diagram of a quick-change assembly according to a preferred embodiment of the utility model.

[0039] Figure 3 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0040] Figure 4 Another structural schematic diagram of a quick-change assembly according to a preferred embodiment of the utility model.

[0041] Figure 5 This is a partial structural schematic diagram of a quick-change bracket according to a preferred embodiment of the utility model, wherein the second connecting portion is not shown in the figure.

[0042] Figure 6 The figure is a schematic structural diagram of the connection between the second connecting portion and the first connecting portion of a quick-change bracket according to a preferred embodiment of the utility model.

[0043] Figure 7 This is a structural schematic diagram of the first connecting portion of a quick-change bracket in a preferred embodiment of the utility model.

[0044] Figure 8 This is a schematic structural diagram of the second connecting portion of a quick-change bracket according to a preferred embodiment of the utility model.

[0045] Description of reference numerals:

[0046] 1Quick change bracket

[0047] 10First beam

[0048] 20 first connection part

[0049] 201 connection slot

[0050] 202 opening

[0051] 203 first mounting hole

[0052] 30 Second connection part

[0053] 301 Column

[0054] 302 limiter

[0055] 303 connecting bracket

[0056] 304 extension

[0057] 305 reinforcement

[0058] 306 second mounting hole

[0059] 40 Car end connector

[0060] 401 vehicle end electrical connector

[0061] 402 vehicle end liquid cooling connector

[0062] 50 Stringer

[0063] 60 locking mechanism

[0064] 2 battery packs DETAILED DESCRIPTION

[0065] The present invention is further described below by way of embodiments, but the present invention is not limited to the scope of the embodiments.

[0066] like Figures 1 to 8As shown, this embodiment provides a quick-change bracket 1, which is used to achieve a detachable connection between a battery pack 2 and an electric vehicle. The quick-change bracket 1 includes a first crossbeam 10, a first connecting portion 20, and a second connecting portion 30. Among them, a vehicle-end connector 40 is provided on the first crossbeam 10, and the vehicle-end connector 40 is used to connect with the battery pack 2. In the length direction of the battery pack 2, the first connecting portion 20 and the second connecting portion 30 are provided at the end of the quick-change bracket 1 opposite to the first crossbeam 10, the first connecting portion 20 is used to connect with the electric vehicle, and the second connecting portion 30 is used to connect with the battery pack 2, and the first connecting portion 20 and the second connecting portion 30 are detachably connected.

[0067] In this embodiment, the battery pack 2 can be connected to the electric vehicle at both ends of the length direction of the battery pack 2 through the first crossbeam 10, the first connecting portion 20 and the second connecting portion 30. When the electric vehicle shakes during driving, the relative movement between the battery pack 2 and the electric vehicle can be reduced, thereby improving the connection reliability between the battery pack 2 and the electric vehicle. The first connecting portion 20 and the second connecting portion 30 are detachably connected, which is also convenient for battery replacement of the electric vehicle.

[0068] It should be noted that the specific structure and specific connection method of the second connecting part 30 and the first connecting part 20 are not specifically limited here, and any structure and connection method applicable to this field can be adopted, as long as the range of relative movement between the battery pack 2 and the electric vehicle can be limited through the detachable connection between the first connecting part 20 and the second connecting part 30.

[0069] As a preferred configuration, in this embodiment, at least Figures 1 to 3 As shown, the second connection part 30 is hooked to the first connection part 20. With such a setting and the hooking method, it is convenient for the battery replacement equipment to quickly replace the battery of the electric vehicle through the chassis battery replacement method. Taking the installation of the battery pack 2 as an example, when the battery replacement equipment lifts the battery pack 2 to the preset position at the bottom of the vehicle body and evacuates, the battery pack 2 can be used The self-weight of the battery pack 2 can be used to achieve the connection and coordination between the second connection part 30 and the first connection part 20, which is simple to operate and is conducive to achieving a reliable connection between the battery pack 2 and the vehicle body.

[0070] Specifically, refer to Figures 1 to 3 , Figures 6 to 8It is understood that this embodiment provides a preferred structural setting for realizing the hanging connection. The second connection part 30 includes a column 301 and a limit part 302, the column 301 extends upward, and the limit part 302 is connected to the top of the column 301 and extends outward along the outer wall of the column 301. Among them, the second connection part 30 is hung on the first connection part 20 through the limit part 302. Here, the column 301 is extended upward, which is equivalent to raising the position of the limit part 302 installed thereon. On the one hand, the limit part 302 is closer to the first connection part 20, so as to facilitate the connection between the limit part 302 and the first connection part 20; on the other hand, the setting of the column 301 also provides more operating space for the connection between the limit part 302 of the second connection part 30 and the first connection part 20, which is conducive to realizing the reliable connection between the second connection part 30 and the first connection part 20. In addition, with the above-mentioned structural arrangement, the structure of the second connecting part 30 is simple, which is also conducive to simplifying the structural arrangement of the first connecting part 20 matched therewith, which is conducive to simplifying the structure of the quick-change bracket 1 and facilitating the reliable connection between the battery pack 2 and the body of the electric vehicle.

[0071] To further improve the reliability of the connection, such as Figures 1 to 3 , Figures 6 to 8 As shown, the limiting part 302 extends outward along the two sides of the column 301 in the width direction of the battery pack 2, and the limiting part 302 and the column 301 form a "T"-shaped structure. The "T"-shaped structure is equivalent to that both ends of the limiting part 302 can cooperate with the first connecting part 20 and achieve hanging through it, with a large contact area, and both ends of the limiting part 302 can be fulcrums, and the balance is good, so that the second connecting part 30 can be more conveniently and reliably connected to the first connecting part 20, and then the battery pack 2 can be conveniently and reliably connected to the electric vehicle.

[0072] Accordingly, in order to adapt to the structure of the second connecting portion 30, as shown in FIG. Figures 1 to 3 , Figures 6 to 8 As shown, the first connection part 20 is provided with a connection groove 201, and the bottom wall of the connection groove 201 is provided with an opening 202. The connection groove 201 is used to accommodate the limiting part 302 and the limiting part 302 is mounted on the bottom wall of the connection groove 201, and the column 301 is penetrated through the opening 202. In this way, the self-weight of the battery pack 2 enables the limiting part 302 and the bottom wall of the connection groove 201 to form a natural fit. When the electric vehicle shakes along the width direction during driving, the risk of the limiting part 302 being separated from the connection groove 201 can be reduced through the cooperation of the column 301 and the opening 202, which is conducive to improving or ensuring the connection reliability between the battery pack 2 and the body of the battery vehicle.

[0073] like Figures 1 to 3 , Figures 6 to 8As shown, the second connection part 30 also includes a connection bracket 303, and an extension part 304 is provided on the top of the connection bracket 303. The extension part 304 extends in a direction away from the battery pack 2, and the column 301 is connected to the extension part 304 and is spaced apart from the battery pack 2. The first connection part 20 can be accommodated in the space between the column 301 and the side wall of the battery pack 2, or an operating space is provided for the connection between the second connection part 30 and the first connection part 20, which can reduce the space occupied by the second connection part 30 and the first connection part 20 in the height direction when the second connection part 30 cooperates with the first connection part 20. In addition, when the electric vehicle shakes along the length direction of the battery pack 2 during driving, the connection bracket 303 can also limit the movement of the battery pack 2 or the displacement of the battery pack 2 to a certain extent, which can further reduce the amplitude of the relative movement between the battery pack 2 and the electric vehicle, which is conducive to improving the connection reliability between the battery pack 2 and the electric vehicle.

[0074] Further, as a preferred arrangement, the connecting bracket 303 is provided with reinforcing ribs 305 along the height direction, and the top of the reinforcing ribs 305 is connected to the extension part 304. By providing the reinforcing ribs 305, the bearing capacity of the connecting bracket 303 in the height direction can be increased, and the risk of the extension part 304 breaking can be reduced, which is conducive to improving or ensuring the safety of the quick-change bracket 1 during use.

[0075] As another preferred setting, refer to Figures 1 to 3 , Figure 6 It is understood that the first connection part 20 is provided with a connection groove 201, and the connection groove 201 is used to accommodate the limiting part 302, and the connection groove 201 is arranged on the side of the first connection part 20 away from the battery pack 2. Among them, the connection groove 201 is arranged on the side of the first connection part 20 away from the battery pack 2, and there is a certain interval between the position where the limiting part 302 cooperates or hangs with the connection groove 201 of the second connection part 30 and the side wall of the battery pack 2, and the interval can accommodate part of the first connection part 20 or provide an operating space for the connection between the limiting part 302 and the first connection part 20. On the basis of facilitating the connection between the second connection part 30 and the first connection part 20, it is also conducive to achieving the compactness of the overall structure. Accordingly, when the automobile shakes along the length direction of the battery pack 2 during driving, the displacement of the battery pack 2 can also be limited or the displacement amount of the battery pack 2 can be limited, so that the amplitude of the relative movement between the battery pack 2 and the electric vehicle can be further reduced, which is conducive to improving the connection reliability between the battery pack 2 and the electric vehicle.

[0076] Further preferably, the quick-change bracket 1 can be configured to include a second cross beam (shown in the figure), and can be further configured as: the second cross beam includes an inner beam, the inner beam connects a plurality of second connection parts 30 in the width direction of the battery pack 2, and the second connection parts 30 are connected to the battery pack 2 through the inner beam; and / or, the second cross beam includes an outer beam, the outer beam connects a plurality of first connection parts 20 in the width direction of the battery pack 2, and the first connection parts 20 are connected to the electric vehicle through the outer beam.

[0077] In the above structure, the provision of multiple second connection parts 30 and / or multiple first connection parts 20 provides multiple installation points for the connection between the battery pack 2 and the electric vehicle, which is conducive to achieving a more reliable connection. In addition, the provision of the inner beam and the outer beam is conducive to ensuring that the positions of the multiple second connection parts 30 and / or multiple first connection parts 20 meet the preset requirements, and the second connection parts 30 and the first connection parts 20 can be installed on the battery pack 2 and the electric vehicle relatively conveniently, thereby facilitating the overall installation of the first connection parts 20 and the second connection parts 30. In addition, the provision of multiple first connection parts 20 and / or multiple second connection parts 30 also facilitates the flexible installation of the second connection parts 30 and the first connection parts 20, and can be adjusted accordingly according to different models of electric vehicles and battery packs 2, which is conducive to expanding the scope of application of the quick-change bracket 1.

[0078] Optionally, the first connection part 20 and the second connection part 30 may also be configured as follows: the quick-change bracket 1 is provided with a plurality of first connection parts 20 and second connection parts 30 in the width direction of the battery pack 2, and the number of the first connection parts 20 is equal to the number of the second connection parts 30. Optionally or alternatively, the plurality of second connection parts 30 are respectively connected to the battery pack 2, and the plurality of first connection parts 20 are respectively connected to the electric vehicle.

[0079] Here, by providing a plurality of first connection parts 20 and second connection parts 30, it is helpful to improve the reliability of the connection between the battery pack 2 and the electric vehicle in the length direction, thereby further reducing the relative shaking between the battery pack 2 and the electric vehicle. In addition, the plurality of second connection parts 30 are respectively connected to the battery pack 2, and the plurality of first connection parts 20 are respectively connected to the electric vehicle, which facilitates the flexible installation of the second connection parts 30 and the first connection parts 20, and can be adjusted accordingly according to different models of electric vehicles and battery packs 2, which is helpful to expand the application range of the quick-change bracket 1.

[0080] As a preferred arrangement, in this embodiment, the number of the first connection portion 20 and the number of the second connection portion 30 are both two, but in other alternative embodiments, the number of the first connection portion 20 and the second connection portion 30 can be one, three, or more than three according to actual needs.

[0081] In this embodiment, at least referring to Figure 3 , Figures 6 to 8It is understood that the first connection part 20 is provided with a plurality of first mounting holes 203 on the side facing the vehicle body, and the first connection part 20 is detachably mounted on the vehicle body through the plurality of first mounting holes 203. Correspondingly, the second connection part 30 is provided with a plurality of second mounting holes 306 on the side facing the battery pack 2, and the second connection part 30 is detachably mounted on the battery pack 2 through the plurality of second mounting holes 306.

[0082] Of course, in other alternative embodiments, the first connecting portion 20 and / or the second connecting portion 30 may also be installed on the vehicle body and the battery pack 2 in other structural forms.

[0083] like Figure 1 , Figure 2 and Figure 5 As shown, the quick-change bracket 1 also includes a longitudinal beam 50, which is arranged on both sides of the battery pack 2 in the width direction. By arranging the longitudinal beam 50, the battery pack 2 is connected to the electric vehicle at both ends in the width direction of the battery pack 2. When the electric vehicle shakes during driving, the amplitude of the relative movement between the battery pack 2 and the electric vehicle can be further reduced, which is also beneficial to the electrical connection and coolant exchange between the battery pack 2 and the electric vehicle, and improves the connection reliability between the battery pack 2 and the electric vehicle and the safety of the electric vehicle during driving.

[0084] As shown in the accompanying drawings, the first cross beam 10, the longitudinal beam 50 and the second connection part 30 of the quick-change bracket 1 are arranged at intervals in the circumferential direction, and there is no direct connection between the first cross beam 10 and the longitudinal beam 50, and between the longitudinal beam 50 and the second connection part 30. In other words, the quick-change bracket 1 is a split structure. On the one hand, the quick-change bracket 1 is set as a split structure, because the connection structure between the first cross beam 10 and the longitudinal beam 50, and the longitudinal beam 50 and the second connection part 30 is omitted, so the structure of the quick-change bracket 1 can be simplified, which is conducive to achieving the lightweight of the quick-change bracket 1; on the other hand, when a component of the quick-change bracket 1, such as a longitudinal beam 50, is damaged or needs maintenance or replacement due to other reasons, the split design only requires the replacement of the corresponding structure, without affecting other components, and has strong flexibility.

[0085] It should be noted that: (1) the specific structure of the longitudinal beam 50 is not limited here, and it can adopt any structure applicable to this in the prior art, which should also be well known to those skilled in the art and will not be described in detail here; (2) Figure 1 , Figure 3 and Figure 5As shown, similar to other quick-change brackets 1 in the prior art, the quick-change bracket 1 in the present application also includes a locking mechanism 60 for achieving locking and fixation of the battery pack 2. The locking mechanism 60 is correspondingly installed on the longitudinal beam 50, and the side wall of the battery pack 2 is also correspondingly installed with a locking member for cooperating with the locking mechanism 60 to achieve locking and fixation. As for the specific structure of the locking mechanism 60, it is not limited here, and it can adopt any structure applicable to this in the prior art.

[0086] Likewise Figure 1 , Figure 2 and Figure 5 As shown, the vehicle-end connector 40 includes a vehicle-end electrical connector 401 and a vehicle-end liquid cooling connector 402. The vehicle-end electrical connector 401 is used to electrically connect to the battery pack 2, and the vehicle-end liquid cooling connector 402 is used to perform water cooling circulation with the battery pack 2. The vehicle-end electrical connector 401 and the vehicle-end liquid cooling connector 402 are arranged on the same side, and the first crossbeam 10 only needs to be provided with the vehicle-end connector 40, which is conducive to simplifying the structure of the quick-change bracket 1, while ensuring the connection reliability between the battery pack 2 and the electric vehicle in the length direction of the battery pack 2.

[0087] It should be noted that the specific structures of the vehicle-end electrical connector 401 and the vehicle-end liquid-cooling connector 402 can adopt those in the prior art, which should be well known to those skilled in the art and will not be described in detail here.

[0088] The present embodiment also provides a quick-change assembly, which includes a battery pack 2 and the above-mentioned quick-change bracket 1, wherein the first cross beam 10 is arranged at the first end of the battery pack 2 in the length direction, and the first connecting part 20 and the second connecting part 30 are arranged at the second end of the battery pack 2 in the length direction.

[0089] Furthermore, this embodiment also provides an electric vehicle, which includes the quick-change assembly mentioned above.

[0090] In summary, in the quick-change bracket 1, the battery pack 2 can be connected to the electric vehicle at both ends in the length direction of the battery pack 2 through the first crossbeam 10, the first connecting part 20 and the second connecting part 30. When the electric vehicle shakes during driving, the amplitude of the relative movement between the battery pack 2 and the electric vehicle can be reduced, thereby improving the connection reliability between the battery pack 2 and the electric vehicle. The first connecting part 20 and the second connecting part 30 are detachably connected, preferably by hanging connection, which is also convenient for battery replacement of the electric vehicle. When it is necessary to replace the battery of the electric vehicle, taking the installation of the battery pack 2 as an example, the battery replacement equipment lifts the battery pack 2 to the preset position at the bottom of the body of the electric vehicle, the locking mechanism 60 is unlocked, and the battery pack 2 can be locked to the quick-change bracket 1. In addition, the vehicle-end connector 40 can be connected to the battery-end connector of the battery pack 2. After the battery replacement equipment is removed, the second connecting part 30 can be hung on the first connecting part 20 under the action of the gravity of the battery pack 2 itself. At this point, on the basis of locking the battery pack 2 by the locking mechanism 60, combined with the connection between the vehicle-end connector 40 and the battery-end connector, and the connection between the second connection part 30 and the first connection part 20, even if the electric vehicle shakes during driving, the amplitude of relative movement between the battery pack 2 and the electric vehicle can be effectively reduced, thereby effectively improving the connection reliability between the battery pack 2 and the electric vehicle.

[0091] Although the specific implementations of the utility model are described above, those skilled in the art should understand that this is only an example, and the protection scope of the utility model is defined by the attached claims. Those skilled in the art can make various changes or modifications to these implementations without departing from the principle and essence of the utility model, but these changes and modifications fall within the protection scope of the utility model.

Claims

1. A quick-change bracket for realizing a detachable connection between a battery pack and an electric vehicle, characterized in that: The quick-change bracket includes a first crossbeam, on which a vehicle-end connector is provided, and the vehicle-end connector is used to connect to the battery pack; The quick-change bracket also includes a first connecting portion and a second connecting portion. In the length direction of the battery pack, the first connecting portion and the second connecting portion are arranged at an end of the quick-change bracket opposite to the first crossbeam. The first connecting portion is used to connect to the electric vehicle, and the second connecting portion is used to connect to the battery pack. The first connecting portion and the second connecting portion are detachably connected.

2. The quick-change bracket according to claim 1, characterized in that: The second connection portion is hooked on the first connection portion.

3. The quick-change bracket according to claim 2, characterized in that: The second connecting portion includes a column and a limiting portion, the column extends upward, and the limiting portion is connected to the top of the column and extends outward along the outer side wall of the column; The second connection portion is hooked to the first connection portion through the limiting portion.

4. The quick-change bracket according to claim 3, characterized in that: The limiting portion extends outward along both sides of the column in the width direction of the battery pack, and the limiting portion and the column form a "T"-shaped structure; And / or, the first connecting portion is provided with a connecting groove, the bottom wall of the connecting groove is provided with an opening portion, the connecting groove is used to accommodate the limiting portion and the limiting portion is mounted on the bottom wall of the connecting groove, and the column is passed through the opening portion.

5. The quick-change bracket according to claim 3, characterized in that: The second connecting portion further includes a connecting bracket, an extending portion is disposed on the top of the connecting bracket, the extending portion extends in a direction away from the battery pack, and the column is connected to the extending portion and is spaced apart from the battery pack.

6. The quick-change bracket according to claim 5, characterized in that: The connecting bracket is provided with reinforcing ribs along the height direction, and the top of the reinforcing ribs is connected to the extending portion; And / or, the first connecting portion is provided with a connecting groove, the connecting groove is used to accommodate the limiting portion, and the connecting groove is arranged on a side of the first connecting portion away from the battery pack.

7. The quick-change bracket according to claim 1, characterized in that: The quick-change bracket includes a second crossbeam; The second cross beam includes an inner beam, the inner beam is connected to a plurality of second connection parts in a width direction of the battery pack, and the second connection part is connected to the battery pack through the inner beam; And / or, the second cross beam includes an outer beam, the outer beam connects a plurality of the first connection parts in a width direction of the battery pack, and the first connection parts are connected to the electric vehicle through the outer beam.

8. The quick-change bracket according to claim 1, characterized in that: The quick-change bracket is provided with a plurality of the first connecting parts and the second connecting parts in the width direction of the battery pack; The number of the first connection parts is equal to the number of the second connection parts; and / or, a plurality of the second connection parts are respectively connected to the battery pack, and a plurality of the first connection parts are respectively connected to the electric vehicle.

9. The quick-change bracket according to claim 1, characterized in that: The vehicle-end connector includes a vehicle-end electrical connector and a vehicle-end liquid cooling connector, wherein the vehicle-end electrical connector is used to be electrically connected to the battery pack, and the vehicle-end liquid cooling connector is used to perform water cooling circulation with the battery pack; And / or, the quick-change bracket further includes a longitudinal beam, and the longitudinal beam is arranged on both sides of the battery pack along the width direction.

10. A quick-change assembly, characterized in that: The quick-change assembly includes a battery pack and a quick-change bracket as described in any one of claims 1 to 9, wherein the first cross beam is arranged at a first end in the length direction of the battery pack, and the first connecting portion and the second connecting portion are arranged at a second end in the length direction of the battery pack.

11. An electric vehicle, characterized in that: The electric vehicle comprises the quick-change assembly as claimed in claim 10.

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