Electric vehicle

Abstract

Disclosed in the present invention is an electric vehicle, comprising a battery pack, a quick-swap support, and a locking mechanism. The locking mechanism comprises locking members and locking seats; the locking members are arranged on two opposite sides of the battery pack in the width direction; the locking members extend in the width direction of the battery pack; the battery pack is detachably connected to the quick-swap support by means of the locking members and the locking seats; engagement members are provided on at least one side of the battery pack in the length direction; engagement seats are correspondingly provided on the quick-swap support; and the engagement members are engaged with the engagement seats. The engagement members are provided on at least one side of the battery pack in the length direction to increase engagement points of the battery pack, such that the battery pack is firmly connected to the quick-swap support. Therefore, in a vibration environment, even if the locking members or engagement members on a certain side are disengaged from the quick-swap support, it still can ensure that there are enough engagement members and locking members for firmly fixing the battery pack to the quick-swap support, thereby avoiding the occurrence of deformation of the battery pack or falling off of the battery pack from the quick-swap support due to uneven stress on the battery pack.

Description

electric vehicles

[0001] This application claims the benefit of Chinese Patent Application No. 2023116442877, filed on November 30, 2023. This application incorporates the entirety of the aforementioned Chinese Patent Application. Technical Field

[0002] The present invention relates to an electric vehicle. Background Art

[0003] In recent years, new energy vehicles have developed rapidly. Electric vehicles that rely on batteries as driving energy have the advantages of zero emissions and low noise. As the market share and usage frequency of electric vehicles are increasing,

[0004] The battery pack installation methods of existing electric vehicles are generally divided into fixed and replaceable types. Among them, fixed battery packs are fixed to the vehicle and directly use the vehicle as the charging target during charging. The replaceable battery pack is fixed to the electric vehicle adapter base through a movable installation method. The battery pack can be removed for independent replacement or charging operations. After the replaced battery pack is charged, it is installed on the vehicle again. In the existing technology, the battery pack replacement methods include various methods such as manual and automatic. Regardless of which method is used, when the battery is installed on the electric vehicle chassis, the battery pack needs to be locked to the chassis beam of the electric vehicle, and the body beam is used to support and fix the battery pack. The existing battery pack is relatively wide and only has locking mechanisms on opposite sides of the battery pack. The battery pack is connected to the quick-change bracket through the locking mechanism. The quick-change bracket is connected to the body beam. The area of ​​the battery pack away from the two sides has no connection support and causes deformation of the battery pack and poor seismic performance. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide an electric vehicle in order to overcome the defect in the prior art that the battery pack and the quick-change bracket are not firmly fixed.

[0006] The present invention solves the above technical problems through the following technical solutions:

[0007] An electric vehicle includes a battery pack, a quick-change bracket and a locking mechanism, wherein the locking mechanism includes a locking piece and a locking seat. The locking pieces are provided on opposite sides of the battery pack in the width direction, and the locking pieces extend along the width direction of the battery pack. The battery pack is detachably connected to the quick-change bracket via the locking piece and the locking seat. A hanging piece is provided on at least one side of the battery pack in the length direction, and a hanging seat is correspondingly provided on the quick-change bracket. The hanging piece is hung on the hanging seat.

[0008] In this solution, in addition to the locking parts on both sides of the battery pack along the width direction, a hanging part is also provided on at least one side of the battery pack in the length direction to increase the hanging points of the battery pack, so that the connection between the battery pack and the quick-change bracket is firm. Therefore, in a vibrating environment, even if the locking part or hanging part on one side falls off from the quick-change bracket, it is possible to ensure that there are sufficient hanging parts and locking parts to firmly fix the battery pack on the quick-change bracket without causing the battery pack to be deformed or fall off from the quick-change bracket due to uneven force on the battery pack, thereby improving the shock resistance of the battery pack.

[0009] Preferably, the battery pack is provided with hanging parts on both sides along the length direction, so that hanging points are provided around the battery pack, so that the force on the battery pack is more uniform, and the connection between the battery pack and the quick-change bracket is more firm and reliable, thereby further improving the shock resistance of the battery pack.

[0010] Preferably, the hanging part is connected to the side or bottom of the battery pack. In this embodiment, compared with connecting the hanging part to the top surface of the battery pack, the above-mentioned structural arrangement provides better support and lifting effects on the battery pack, making the overall force on the battery pack more uniform. By connecting the hanging part to the side of the battery pack, it is easier to install the hanging part. By connecting the hanging part to the bottom surface of the battery pack, the force point is located below the battery pack shell, lifting from the bottom up, and the battery pack shell plays a supporting role. This provides better support for the battery pack than connecting the hanging part to the top surface of the battery pack.

[0011] Preferably, the attachment member is connected to the battery pack's flange structure or to the battery pack via a mounting bracket. In this embodiment, the flange structure can be integrally formed with the battery pack housing, making it easy to manufacture. The mounting bracket allows the attachment member to be detachably connected to the battery pack, making assembly and disassembly easy.

[0012] Preferably, the hooking member includes a connecting portion and a hooking portion, one end of the connecting portion being connected to the battery pack, and the other end of the connecting portion being connected to the hooking portion, the hooking portion being located to the side of the battery pack, and the hooking member being hooked into the hooking seat via the hooking portion. In this embodiment, the above-mentioned structural form facilitates the hooking member to hook the battery pack into the hooking seat of the electric vehicle.

[0013] Preferably, the connecting portion and the hooking portion are arranged at an angle, and the connecting portion extends vertically or horizontally. In this embodiment, the connecting portion and the hooking portion are arranged at an angle to facilitate the hooking of the hook member into the hook seat via the hooking portion. The connecting portion extends vertically or horizontally, and the extension direction of the connecting portion can be selected according to different needs, enabling flexible installation of the hook member and making the battery pack and quick-change bracket structure compact.

[0014] Preferably, the hook portion extends and protrudes from the connecting portion in a direction away from the connecting portion. In this embodiment, the above-mentioned structural arrangement facilitates the hook portion to be connected with the recess on the hook seat. Preferably, the hook portion protrudes horizontally from the connecting portion, facilitating the hook portion to be hooked in the horizontal direction.

[0015] Preferably, the attachment portion includes a attachment shaft extending horizontally, with a middle portion of the attachment shaft connected to an end portion of the connection portion, and both ends of the attachment shaft exposed on the surface of the connection portion. In this embodiment, the above-mentioned structural arrangement is adopted, and by connecting the attachment shaft to the connection portion, the connection strength between the attachment shaft and the support portion is enhanced. By extending the attachment shaft horizontally, the attachment portion can be attached horizontally.

[0016] Preferably, both ends of the hitch shaft exposed from the connecting portion are sleeved with bushings; and / or both end surfaces of the hitch shaft are provided with blind holes; and / or the hitch shaft passes through the connecting portion. In this solution, by providing bushings on the hitch shaft, friction and wear of the hitch shaft are reduced, thereby increasing the service life of the hitch shaft. Both end surfaces of the hitch shaft are provided with blind holes, which facilitate cooperation with positioning members and achieve rapid positioning. The hitch shaft passes through the connecting portion, allowing the hitch shaft to be connected to the connecting hole of the connecting portion, so that the hitch shaft and the connecting portion can be processed and manufactured separately, facilitating processing while ensuring strength requirements and preventing deformation.

[0017] Preferably, the mounting base is mounted on the quick-change bracket and / or embedded within the quick-change bracket. In this embodiment, mounting the mounting base on the quick-change bracket facilitates attachment of the mounting base to the mounting member on the battery pack. This also allows the battery pack to be equipped with only a simpler mounting member, thereby reducing the size and making the battery pack more compact. When the battery pack is not attached to the quick-change bracket, the mounting base can be easily removed and installed, facilitating installation. Embedding the mounting base within the quick-change bracket reduces the size of the mounting base and simplifies the structural configuration.

[0018] Preferably, the battery pack includes an electrical connector, the battery pack is provided with the hanging member on a side of the battery pack that is close to the electrical connector along its length, and a hanging seat that cooperates with the hanging member is provided on a side of the quick-change bracket that faces the battery pack; and / or, the battery pack is provided with a hanging member on a side of the battery pack that is away from the electrical connector along its length, and a hanging seat that cooperates with the hanging member is provided on a side of the quick-change bracket that faces the battery pack or a side away from the battery pack. In this embodiment, the above-mentioned structural arrangement is adopted, and hanging members are also provided on at least one side of the battery pack along its length to increase the number of hanging points of the battery pack, thereby ensuring a firm connection between the battery pack and the quick-change bracket. In a vibrating environment, even if the locking member or hanging member on one side falls off the quick-change bracket, sufficient hanging members and locking members can be ensured to firmly fix the battery pack to the quick-change bracket without causing the battery pack to deform or fall off the quick-change bracket due to uneven force on the battery pack, thereby improving the shock resistance of the battery pack.

[0019] Preferably, the side of the mounting seat has a vertically disposed open slot and a mounting slot connected to the open slot and extending horizontally. The side of the mounting slot also has an opening. The mounting member moves vertically to a first height position corresponding to the open slot, and then moves horizontally from the first height position to a mounting point within the mounting slot. In this embodiment, the above-described structural form facilitates the mounting shaft of the mounting member to first move vertically to the first height position corresponding to the open slot, and then move horizontally, so that the connecting portion of the mounting member is located in the vertically disposed open slot and the mounting shaft is located within the mounting slot, thereby achieving reliable mounting of the mounting member and the mounting seat. Because the mounting member moves in both vertical and horizontal linear directions, the mounting and disengaging movements of the mounting member are simple and easy to operate.

[0020] Preferably, the bottom of the mounting seat has an open slot and a mounting slot connected to the open slot and extending horizontally. The mounting member moves vertically to a first height position within the open slot corresponding to the mounting slot, and then moves horizontally from the first height position to a mounting point within the mounting slot. In this embodiment, the above-described structure facilitates the mounting shaft of the mounting member to first move vertically into the open slot and then horizontally into the mounting slot, thereby achieving reliable mounting of the mounting member to the mounting seat. Because the mounting shaft moves in both vertical and horizontal linear directions, the mounting and disengaging movements of the mounting member are simple and easy to operate.

[0021] Preferably, the side of the mounting seat has a horizontally extending mounting slot, and the mounting member moves vertically to a first height position corresponding to the mounting slot, and then moves horizontally from the first height position to a mounting point within the mounting slot. In this embodiment, the above-described structure facilitates the mounting member's mounting shaft to first move vertically into the open slot and then horizontally into the mounting slot, thereby achieving reliable mounting of the mounting member to the mounting seat. Because the mounting shaft moves in both vertical and horizontal linear directions, the mounting and unmounting movements of the mounting member are simple and easy to operate.

[0022] Preferably, the bottom of the hanging groove is a supporting portion for supporting and supporting the hanging shaft of the hanging member. In this solution, the above-mentioned structural form is adopted, and the weight of the battery pack is mainly borne by the supporting portion.

[0023] On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention. On the basis of conforming to the common sense in this field, the above-mentioned preferred conditions can be arbitrarily combined to obtain the preferred embodiments of the present invention.

[0024] The positive and progressive effect of the present invention lies in that, in addition to the locking members already provided on both sides of the battery pack along the width direction, a hooking member is also provided on at least one side of the battery pack along the length direction to increase the number of hooking points of the battery pack, thereby ensuring a secure connection between the battery pack and the quick-change bracket. Thus, in a vibrating environment, even if a locking member or hooking member on one side falls off the quick-change bracket, sufficient hooking members and locking members are ensured to securely fix the battery pack to the quick-change bracket without causing the battery pack to deform or fall off the quick-change bracket due to uneven force on the battery pack, thereby improving the shock resistance of the battery pack. Preferably, the hooking members are provided on both sides of the battery pack along the length direction, so that hooking points are provided on all four sides of the battery pack, ensuring uniform force on the battery pack and a more secure and reliable connection between the battery pack and the quick-change bracket, thereby further improving the shock resistance of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG1 is a structural schematic diagram 1 of a battery pack and a quick-change bracket according to a preferred embodiment of the present invention.

[0026] FIG2 is a structural schematic diagram 1 of a battery pack according to a preferred embodiment of the present invention (the connecting portion is arranged vertically).

[0027] FIG3 is a second structural diagram of a battery pack according to a preferred embodiment of the present invention (the connecting portion is arranged vertically).

[0028] FIG4 is an enlarged view of portion A in FIG3 .

[0029] FIG5 is a structural schematic diagram 1 of a quick-change bracket according to a preferred embodiment of the present invention.

[0030] FIG6 is a second structural diagram of a quick-change bracket according to a preferred embodiment of the present invention.

[0031] FIG7 is an enlarged view of portion B in FIG6 .

[0032] FIG8 is a second structural diagram of a battery pack and a quick-change bracket according to a preferred embodiment of the present invention (the mounting base is embedded in the quick-change bracket).

[0033] FIG9 is an enlarged view of portion D in FIG8 .

[0034] FIG10 is a partial cross-sectional view of the mounting base shown in FIG20 embedded in the quick-change bracket.

[0035] FIG11 is a third structural diagram of a battery pack according to a preferred embodiment of the present invention (the connecting portion is arranged horizontally).

[0036] FIG12 is a fourth structural diagram of a battery pack according to a preferred embodiment of the present invention (the connecting portion is arranged horizontally).

[0037] FIG13 is an enlarged view of portion C in FIG12 .

[0038] FIG14 is a structural schematic diagram 1 of a hanging member according to a preferred embodiment of the present invention.

[0039] FIG. 15 is a second structural diagram of a hanging member according to a preferred embodiment of the present invention.

[0040] FIG16 is a schematic structural diagram of a mounting base according to a preferred embodiment of the present invention.

[0041] FIG. 17 is a structural diagram of a hanging member according to a preferred embodiment of the present invention hung on the hanging seat in FIG. 16 .

[0042] FIG18 is a schematic structural diagram of a mounting base according to another preferred embodiment of the present invention.

[0043] FIG. 19 is a structural diagram of a preferred embodiment of the present invention in which a hanging member is hung on the hanging seat in FIG. 18 .

[0044] FIG20 is a schematic structural diagram of a mounting base according to another preferred embodiment of the present invention.

[0045] Description of reference numerals:

[0046] Battery pack 1, quick-change bracket 2, locking mechanism 3, locking part 31, locking seat 32, hanging part 4, connecting part 41, hanging part 42, hanging shaft 421, blind hole 4211, sleeve 4212, hanging seat 5, opening groove 51, hanging groove 52, abutment part 53, avoidance groove 54, flange structure 6, mounting seat 7, connecting hole 71, electrical connector 10, liquid cooling joint 20, length direction 100, width direction 200. DETAILED DESCRIPTION

[0047] The present invention will be described more clearly and completely below by way of embodiments in conjunction with the accompanying drawings, but the present invention is not limited to the scope of the embodiments.

[0048] As shown in Figures 1-20, this embodiment discloses an electric vehicle comprising a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 comprises a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200 of the battery pack 1. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. A hanging member 4 is provided on at least one side of the battery pack 1 along the length direction 100. The quick-change bracket 2 is correspondingly provided with a hanging seat 5, and the hanging member 4 is hung on the hanging seat 5.

[0049] Optionally, an electrical connector 10 is provided on one end face of the battery pack 1 along its length 100 . Multiple hooks 4 are symmetrically distributed on either side of the electrical connector 10 . Providing multiple hooks 4 on the battery pack 1 increases the number of hooking points, making the connection between the battery pack 1 and the quick-change bracket 2 more secure and reliable, improving the securement of the battery pack 1 and further enhancing the shock resistance of the battery pack 1 . Symmetrically distributing the multiple hooks 4 on either side of the electrical connector balances the forces acting on the battery pack 1 in the width direction 200 , preventing uneven forces on the battery pack 1 in the width direction 200 , which could cause deformation of the battery pack 1 .

[0050] Optionally, the battery pack 1 is further provided with a liquid cooling joint 20. The liquid cooling joint 20 and the electrical connector 10 are located on the same end face of the battery pack 1, and the hanging parts 4 are distributed on the side of the liquid cooling joint 20 away from the electrical connector 10. The liquid cooling joint 20 is used to cool the battery pack 1 by inputting a liquid cooling medium to keep the temperature of the battery pack 1 within a preset range, thereby preventing the temperature of the battery pack 1 from being too high. The liquid cooling joint 20 and the electrical connector 10 are arranged on the same end face of the battery pack 1 to facilitate cable routing and optimize cable layout. The hanging parts 4 are distributed on the side of the liquid cooling joint 20 away from the electrical connector 10 to avoid the electrical connector 10 and the liquid cooling joint 20.

[0051] Optionally, the battery pack 1 is provided with a hook 4 on both sides along the length direction 100, and a hook seat 5 that cooperates with the hook 4 is provided at a corresponding position on the quick-change bracket 2. This ensures that there are hook points on all four sides of the battery pack 1, thereby evenly applying force to the battery pack 1 and making the connection between the battery pack 1 and the quick-change bracket 2 more secure and reliable. As shown in Figures 1-6, a hook 4 is provided on both sides along the width direction 200 at the front end of the battery pack 1 (the end closest to the electrical connector 10), and a hook 4 is provided on both sides along the width direction 200 at the rear end of the battery pack 1. A hook seat 5 corresponding to each hook 4 is provided on the quick-change bracket 2.

[0052] In this embodiment, based on the locking members 31 on both sides of the battery pack 1 along the width direction 200, a hanging member 4 is also provided on at least one side of the battery pack 1 in the length direction 100 to increase the hanging points of the battery pack 1, so that the connection between the battery pack 1 and the quick-change bracket 2 is firm. Therefore, in a vibrating environment, even if the locking member 31 or the hanging member 4 on one side falls off from the quick-change bracket 2, it is possible to ensure that there are sufficient hanging members 4 and locking members 31 to firmly fix the battery pack 1 on the quick-change bracket 2, without causing the battery pack 1 to be deformed or fall off from the quick-change bracket 2 due to uneven force on the battery pack 1, thereby improving the shock resistance of the battery pack 1.

[0053] Optionally, the hanging member 4 is connected to the side or bottom of the battery pack 1. Connecting the hanging member 4 to the side of the battery pack 1 facilitates installation. Connecting the hanging member 4 to the bottom of the battery pack 1 places the force bearing point below the battery pack 1 housing, supporting the battery pack 1 from below. This provides better support for the battery pack 1 than connecting the hanging member 4 to the top of the battery pack 1.

[0054] Optionally, the hook 4 is connected to the flange structure of the battery pack 1 or to the battery pack 1 via a mounting bracket. The flange structure can be integrally formed with the housing of the battery pack 1, making it easy to manufacture. The mounting bracket allows the hook 4 to be detachably connected to the battery pack 1, making assembly and disassembly easy.

[0055] As shown in Figures 14 and 15, in this embodiment, the hanging member 4 includes a connecting portion 41 and a hanging portion 42. One end of the connecting portion 41 is connected to the battery pack 1, and the other end of the connecting portion 41 is connected to the hanging portion 42. The hanging portion 42 is located on the side of the battery pack 1. The hanging member 4 is hung in the hanging seat 5 through the hanging portion 42, so that the hanging member 4 can hang the battery pack 1 in the hanging seat 5 of the electric vehicle.

[0056] As shown in Figures 14 and 15, in this embodiment, the connecting portion 41 and the hanging portion 42 are arranged at an angle to facilitate the hanging member 4 to be hung in the hanging seat 5 via the hanging portion 42. The connecting portion 41 extends vertically or horizontally. Optionally, the connecting portion 41 and the hanging portion 42 are arranged perpendicular to each other, and the hanging portion 42 extends along the width direction 200 of the battery pack 1, so that the hanging member 4 forms a T-shaped structure, facilitating the hanging member 4 to be hung horizontally.

[0057] It should be noted that "the hanging member 4 is hung in the horizontal direction" means that the hanging portion of the hanging member 4 is horizontally placed in the hanging groove of the hanging seat 5 (the hanging groove is horizontal), and does not represent the hanging method of the hanging member 4 and the hanging seat 5. In fact, the hanging methods of the hanging member 4 and the hanging seat 5 include horizontal hanging methods and vertical hanging methods. Specifically, when the connecting portion 41 extends in the horizontal direction (that is, the hanging member is set horizontally), as shown in Figure 17, the hanging member 4 is hung in the hanging seat 5 in the horizontal direction. At this time, the hanging method of the hanging member 4 and the hanging seat 5 is a horizontal hanging method. When the connecting portion 41 extends in the vertical direction (that is, the hanging member is set vertically), as shown in Figure 9, the hanging member 4 is hung in the hanging seat 5 in the vertical direction. At this time, the hanging method of the hanging member 4 and the hanging seat 5 is a vertical hanging method.

[0058] As shown in Figures 14 and 15, the hooking portion 42 extends and protrudes from the connecting portion 41 in a direction away from the connecting portion 41, so that the hooking portion 42 can be engaged with the recess on the hooking seat 5. Preferably, the hooking portion 42 protrudes horizontally from the connecting portion 41, so that the hooking portion 42 can be hooked in the horizontal direction.

[0059] As shown in Figures 14 and 15, in this embodiment, the hanging part 42 includes a hanging shaft 421, the middle part of the hanging shaft 421 is connected to the end of the connecting part 41, and both ends of the hanging shaft 421 are exposed on the surface of the connecting part 41 to enhance the connection strength between the hanging shaft 421 and the connecting part 41. The hanging shaft 421 is extended in the horizontal direction to facilitate the hanging of the hanging part 42 in the horizontal direction.

[0060] As shown in Figures 14 and 15 , to reduce friction and wear on the hook shaft 421, a sleeve 4212 is sleeved on the hook shaft 421. The sleeve 4212 is rotatable relative to the hook shaft 421, thereby increasing the service life of the hook shaft 421. The sleeve 4212 is mounted on the hook shaft 421 via a groove on the outer wall of the hook shaft 421. This confines the sleeve 4212 within the contact area between the hook shaft 421 and the hook portion 42, preventing it from falling off. It also prevents the sleeve 4212 from causing wear on the sidewalls, thereby increasing the service life of the hook member 4. In this embodiment, sleeves 4212 are sleeved on both ends of the hook shaft 421 that are exposed from the connecting portion 41.

[0061] As shown in Figures 14 and 15, in this embodiment, blind holes 4211 are provided on both end faces of the hook shaft 421, so that the blind holes 4211 can cooperate with the positioning member to achieve rapid positioning. For example, the positioning member is an infrared sensor, which detects the blind holes on the end faces of the hook shaft 421 through the infrared sensor to determine whether the hook shaft 421 is accurately hooked in the hook groove of the hook seat 5. As shown in Figures 14 and 15, in this embodiment, the hook shaft 421 passes through the connecting portion 41, so that the hook shaft 421 is connected to the connecting hole of the connecting portion 41. This connection method allows the hook shaft 421 and the connecting portion 41 to be processed and manufactured separately, which is convenient for processing, while ensuring strength requirements and preventing deformation.

[0062] In other alternative embodiments, in order to improve the overall strength of the hanging component, the connecting portion 41 and the hanging portion 42 may be integrally formed.

[0063] As shown in Figures 5-7 , in this embodiment, the mounting base 5 is mounted on the quick-change bracket 2, facilitating attachment to the mounting member 4 on the battery pack 1. This also reduces the need for the simpler mounting member 4 on the battery pack 1, resulting in a smaller and more compact battery pack 1. Even when the battery pack 1 is not mounted on the quick-change bracket 2, the mounting base 5 is easily removed and installed, making installation more convenient. Specifically, by securing the mounting base 5 to the quick-change bracket 2, the battery pack 1 and mounting base 5 can be easily connected, providing a secure connection. Furthermore, due to the mounting base 5, only a simple mounting member 4 is required on the battery pack 1. Compared to more complex mounting members 4, this simplified mounting member 4 is not only easier to manufacture and install, but also reduces the size of the battery pack 1, making the overall structure more compact. The mounting base 5 can also be easily removed and installed when the battery pack 1 is not mounted on the quick-change bracket 2. This makes it easier for users to replace or repair the battery pack 1, improving the product's usability. In other alternative embodiments, the mounting base 5 is embedded in the quick-change bracket 2 to reduce the volume of the mounting base 5 and simplify the structural arrangement.

[0064] Furthermore, the battery pack 1 includes an electrical connector 10. A hook 4 is provided on the side of the battery pack 1 along its length 100 that is close to the electrical connector 10. A hook seat 5 that cooperates with the hook 4 is disposed on the side of the quick-change bracket 2 that faces the battery pack 1. Alternatively, a hook 4 is provided on the side of the battery pack 1 along its length 100 that is away from the electrical connector 10. The hook seat 5 that cooperates with the hook 4 is disposed on the side of the quick-change bracket 2 that faces the battery pack 1 or on the side away from the battery pack 1. Providing the hook 4 on one or both sides of the battery pack 1 along its length 100 increases the number of hooking points for the battery pack 1, ensuring a secure connection between the battery pack 1 and the quick-change bracket 2. This reduces uneven force on the battery pack 1, thereby improving the shock resistance of the battery pack 1.

[0065] It should be noted that when the battery pack 1 is provided with the hook 4 on the side closer to the electrical connector 10 along the length direction 100, the hook seat 5 needs to be located on the side of the quick-change bracket 2 facing the battery pack 1 to avoid interference from components such as the electrical connector 10 or the liquid cooling connector 20 located at the front end. This also facilitates hooking the hook 4 to the hook seat 5 from the inside of the quick-change bracket 2. If the battery pack 1 is provided with the hook 4 on the side farther from the electrical connector 10 along the length direction 100, the hook seat 5 can be located on either the side of the quick-change bracket 2 facing the battery pack 1 or the side farther from the battery pack 1.

[0066] As shown in FIG18 , a hanging seat 5 is shown that cooperates with a hanging member 4 that extends in the vertical direction from a connecting portion 41. The side of the hanging seat 5 has an opening slot 51 that is vertically arranged, and a hanging slot 52 that is connected to the opening slot 51 and extends in the horizontal direction. The side of the hanging slot 52 also has an opening. The hanging member 4 moves in the vertical direction to a first height position corresponding to the opening slot 51, and moves in the horizontal direction from the first height position to a hanging point in the hanging slot 52. Furthermore, as shown in FIG18 , the bottom of the hanging slot 52 is a supporting portion 53 that is used to support and support the hanging shaft 421 of the hanging member 4. The weight of the battery pack 1 is mainly borne by the supporting portion 53. During attachment, the attachment shaft 421 of the attachment member 4 first moves vertically to a first height position corresponding to the opening slot 51, and then moves horizontally, positioning the connection portion 41 of the attachment member 4 within the vertically disposed opening slot 51. Simultaneously, both ends of the attachment shaft 421 are positioned within the attachment slots 52, thereby achieving reliable attachment of the attachment member 4 to the attachment seat 5 and improving the attachment effect. Because the attachment member 4 moves in both vertical and horizontal linear motions, the attachment and release movements of the attachment member 4 are simple and easy to perform, facilitating rapid and automatic battery pack replacement.

[0067] Specifically, the battery pack moves vertically upward and then horizontally forward. As shown in Figures 5 and 6, a mounting base 5 (Figure 18) is mounted on the inner side of the end of the quick-change bracket 2 near the electrical connector 10. This allows the battery pack 1 to move vertically upward to a first height position corresponding to the opening slot 51, and then move horizontally forward from the first height position to the mounting point within the mounting slot 52. It should be noted that the mounting base 5, which mates with the mounting member 4 extending vertically from the connecting portion 41, is located at the end of the quick-change bracket 2 near the electrical connector to align with the direction of movement of the battery pack 1. This allows the mounting member 4 to automatically engage with the mounting base 5 during movement, thereby improving mounting efficiency. It should be noted that the hanging seat 5 shown in Figure 18 can not only be used to hang the "hanging part 4 with the connecting part 41 extending in the vertical direction", but also can be used to hang the "hanging part 4 with the connecting part 41 extending in the horizontal direction", wherein Figure 19 is a schematic diagram of the hanging seat 5 and the "hanging part 4 with the connecting part 41 extending in the horizontal direction" being hung with each other. In addition, after rotating the hanging part 4 in Figure 19 90 degrees in the clockwise downward direction, it can be hung in the hanging seat 5 in the vertical direction, as shown in Figure 9 after hanging.

[0068] As shown in Figures 16 and 17, another mounting base 5 is shown that cooperates with a mounting member 4 extending horizontally from a connecting portion 41. The mounting base 5 has an open slot 51 at its bottom and a horizontally extending mounting slot 52 connected to the open slot 51. The mounting member 4 moves vertically to a first height position within the open slot 51 corresponding to the mounting slot 52, and then moves horizontally from the first height position to a mounting point within the mounting slot 52. During mounting, the mounting shaft 421 of the mounting member 4 first moves vertically into the open slot 51 and then horizontally into the mounting slot 52, achieving secure mounting of the mounting member 4 to the mounting base 5. The mounting shaft 421 moves both vertically and horizontally, making mounting and disengaging of the mounting member 4 simple and easy to operate, facilitating quick and automatic battery pack replacement. In order to ensure that both ends of the hanging shaft 421 are located in the hanging groove 52, an avoidance groove 54 for accommodating the connecting portion 41 of the hanging member 4 is further provided in the vertical direction of the hanging seat 5 to improve the hanging effect.

[0069] Specifically, the battery pack moves vertically upward and then horizontally forward. As shown in Figures 5-7, the end of the quick-change bracket away from the electrical connector is equipped with a mounting base 5 shown in Figures 14 and 15. The mounting base 5 is located inside the quick-change bracket 2, so that after the battery pack 1 moves vertically upward to a first height position corresponding to the opening slot 51, it can move horizontally forward from the first height position to the mounting point in the mounting slot 52. It should be noted that the mounting base 5, which cooperates with the mounting member 4 extending horizontally from the connecting portion 41, is located at the end of the quick-change bracket 2 away from the electrical connector to match the direction of movement of the battery pack 1. This allows the battery pack 1 to automatically mount the mounting member 4 on the mounting base 5 during movement, thereby improving mounting efficiency.

[0070] In other alternative embodiments, the side of the mounting base has a horizontally extending mounting slot, and the mounting member moves vertically to a first height position corresponding to the mounting slot and then moves horizontally from the first height position to a mounting point within the mounting slot. When the connecting portion of the mounting member extends horizontally, the bottom of the mounting base has a horizontally extending mounting slot, and the mounting member moves vertically to a first height position corresponding to the mounting slot and then moves horizontally from the first height position to a mounting point within the mounting slot. During mounting, the mounting member's mounting shaft first moves vertically into the open slot and then horizontally into the mounting slot, achieving secure mounting between the mounting member and the mounting base. Because the mounting shaft moves in both vertical and horizontal linear directions, the mounting member's movements during mounting and unmounting are simple and easy to perform, facilitating quick and automatic battery pack replacement.

[0071] Example 1

[0072] As shown in Figures 1-6, the electric vehicle includes a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. The battery pack 1 is provided with a hanging member 4 at one end along the length direction 100 near the electrical connector 10. The hanging member 4 is used to hang on the hanging seat 5 on the quick-change bracket 2. The hanging seat 5 that cooperates with the hanging member 4 is disposed on the side of the quick-change bracket 2 facing the battery pack 1. Specifically, in this embodiment, the hanging seat 5 that cooperates with the hanging member 4 is disposed on the inner side of the front end of the quick-change bracket 2, including the hanging seat 5 shown in Figures 18 and 20.

[0073] In a specific embodiment, as shown in Figures 2 to 4, the hanging part 4 is connected to the bottom surface of the battery pack 1. Compared with connecting the hanging part 4 to the top surface of the battery pack 1, the force point is located below the shell of the battery pack 1, which is lifted from the bottom up. The shell of the battery pack 1 plays a major supporting role. In this embodiment, the supporting and lifting effect of connecting the hanging part 4 to the bottom surface of the battery pack 1 is better, and the overall force on the battery pack 1 is more uniform. As shown in Figures 2 to 4, the connecting portion 41 of the hanging part 4 extends in the vertical direction. The hanging part 4 is connected to the bottom surface of the battery pack 1 through the flange structure 6 of the battery pack 1. Since the flange structure 6 is easy to be integrally formed with the shell of the battery pack 1, the structural setting method of connecting the hanging part 4 to the bottom surface of the battery pack 1 through the flange structure 6 of the battery pack 1 in this embodiment has the advantages of easy processing and easy manufacturing.

[0074] When the connecting portion 41 of the hook member 4 extends vertically, the corresponding hook seat 5 includes the hook seat 5 shown in Figures 9, 18, and 19. The hook member 4 in Figure 19 can be vertically mounted within the hook seat 5 after being rotated 90 degrees clockwise downward. Figure 9 illustrates the hook member 4 and the hook seat 5 mounted vertically. During mounting, the hook shaft 421 of the hook member 4 first moves vertically to a first height position corresponding to the opening slot 51, then moves horizontally so that the hook shaft 421 is positioned within the mounting slot 52 (as shown in Figure 9), thereby achieving secure mounting of the hook member 4 and the hook seat 5. It should be noted that because the hook member 4 moves in both vertical and horizontal linear directions, the hook member 4 is simple to mount and unmount, making operation easy and convenient, thereby facilitating the automatic quick replacement of battery packs. When installing the mounting base 5 , in order to mount accurately, the mounting directions and travels of all mounting bases 5 need to be kept consistent.

[0075] In other alternative embodiments, when the connection portion 41 of the hooking member 4 is extended in the vertical direction, the hooking seat 5 used in pair therewith also includes a hooking seat 5 as shown in Figures 20 and 10, wherein Figure 10 is a schematic diagram of the hooking member 4 and the hooking seat 5 when hooked in the vertical direction. During hooking, the hooking member moves in the vertical direction to the first height position corresponding to the hooking groove 52, and moves in the horizontal direction from the first height position to the hooking point in the hooking groove 52, thereby achieving reliable hooking of the hooking member 4 and the hooking seat 5. The movement direction of the hooking shaft 421 is both linear motion in the vertical direction and linear motion in the horizontal direction, which makes the action of the hooking member 4 simple when hooking and disconnecting, and easy to implement during operation, so as to quickly realize automatic quick replacement of the battery pack.

[0076] In another specific embodiment, as shown in Figures 11 to 13, the hanging member 4 is connected to the side of the battery pack 1 through the mounting seat 7. The mounting seat 7 is provided with a plurality of connecting holes 71 for the connecting member to pass through, and the hanging member 4 is connected to the side of the battery pack 1 by the connecting member passing through the connecting holes 71 on the mounting seat 7. Specifically in this embodiment, the connecting member is a bolt or a screw. In order to facilitate the hanging part 42 to move in the horizontal direction and be stably hung on the hanging seat 5, the hanging shaft 421 of the hanging part 42 is also extended in the horizontal direction. As shown in Figures 11 to 13, the connecting part 41 of the hanging member 4 is extended in the horizontal direction, so that the connecting part has a cantilever structure. The hanging member 4 with a cantilever structure has a certain flexibility and better anti-seismic effect. Compared with the hanging member 4 with the connecting part 41 extending in the vertical direction, the structure of the battery pack is more compact.

[0077] When the connecting portion 41 of the hanging member 4 is extended in the horizontal direction, the hanging seat 5 used in conjunction therewith includes the hanging seat 5 shown in Figures 9, 18 and 19. Among them, the hanging member 4 in Figure 19 can be hung in the hanging seat 5 in the vertical direction after being rotated 90 degrees in the clockwise downward direction. Figure 9 is a schematic diagram of the hanging member 4 and the hanging seat 5 when hanging in the vertical direction. When hanging, the hanging shaft 421 of the hanging member 4 first moves in the vertical direction to a first height position corresponding to the open groove 51, and then moves in the horizontal direction so that the hanging shaft 421 is located in the hanging groove 52 (as shown in Figure 9), thereby achieving reliable hanging of the hanging member 4 and the hanging seat 5.

[0078] In other alternative embodiments, when the connecting portion 41 of the hanging member 4 is extended in the horizontal direction, the hanging seat 5 used in pair therewith also includes a hanging seat 5 as shown in FIG20. When hanging, the hanging shaft 421 of the hanging member 4 first moves in the vertical direction to a first height position corresponding to the hanging groove 52, and then moves in the horizontal direction so that the hanging shaft 421 is located in the hanging groove 52, thereby realizing reliable hanging of the hanging member 4 and the hanging seat 5. It should be noted that since the moving directions of the hanging member 4 are both linear motion in the vertical direction and linear motion in the horizontal direction, the movement of the hanging member 4 when hanging and disconnecting is simple and easy to implement during operation, so as to quickly realize automatic quick replacement of the battery pack. When installing the hanging seat 5, in order to accurately hang, it is necessary to keep the hanging direction and stroke of all the hanging seats 5 consistent.

[0079] It should be noted that the movement direction of the battery pack 1 is first vertically upward and then horizontally forward. In this embodiment, the hanging seat 5 arranged at the front end of the quick-change bracket 2 includes a hanging seat shown in Figure 18 and another hanging seat shown in Figure 20. The battery pack 1 first moves upward in the vertical direction to the first height position corresponding to the hanging groove 52, and then moves forward in the horizontal direction to enter the hanging point in the hanging groove 52.

[0080] Example 2

[0081] As shown in Figures 1-6, the electric vehicle includes a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. The quick-change bracket 2 is provided with a mounting seat 5 on one side of the length direction 100 near the electrical connector 10. The battery pack 1 is provided with a corresponding mounting member 4. The mounting seat 5 is used to mount the corresponding mounting member 4 on the battery pack 1.

[0082] Figures 18 and 19 illustrate a mounting base 5 that mates with a horizontally extending mounting member 4 extending from a connecting portion 41. The mounting base 5 has a vertically disposed opening 51 on its side, as well as a horizontally extending mounting slot 52 that connects to the opening 51. The mounting slot 52 also has an opening on its side. The mounting member 4 moves vertically to a first height corresponding to the opening 51 and then moves horizontally from the first height to a mounting point within the mounting slot 52. As shown in Figure 18, the bottom of the mounting slot 52 forms a support portion 53 that abuts and supports the mounting shaft 421 of the mounting member 4. The weight of the battery pack 1 is primarily borne by the support portion 53. Furthermore, a clearance groove 54 is provided at the bottom of the mounting base. This clearance groove 54 connects to the mounting slot 52 and provides clearance for the connecting portion 41 of the mounting member 4. The clearance groove 54 is a portion of the opening 51 and is located at the lower end of the opening 51. During the hooking, the hooking member 4 enters the hooking seat 5 through the opening slot 51 , and the avoidance slot 54 is used to avoid the connecting portion 41 of the hooking member 4 to prevent the connecting portion 41 from interfering with the hooking seat 5 and causing hooking failure.

[0083] During attachment, the attachment shaft 421 of the attachment member 4 first moves vertically to a first height position corresponding to the opening slot 51, and then moves horizontally, positioning the connection portion 41 of the attachment member 4 within the vertically disposed opening slot 51. Simultaneously, both ends of the attachment shaft 421 are positioned within the attachment slot 52, thereby achieving reliable attachment of the attachment member 4 to the attachment seat 5 and improving the attachment effect. It should be noted that the movement of the attachment member 4 is both linear motion in the vertical direction and in the horizontal direction, making the attachment and release movements of the attachment member 4 simple and easy to implement, thereby facilitating the automatic quick replacement of the battery pack.

[0084] As shown in Figures 5 and 6, the mounting base 5 shown in Figure 18 is mounted on the inner side of the end of the quick-change bracket 2 near the electrical connector. It should be noted that due to the influence of the electrical connector 10, the mounting base 5 shown in Figure 18 cannot be mounted on the outer side of the end of the quick-change bracket 2 near the electrical connector. Therefore, in order to simultaneously connect the electrical connector 10 and the mounting member 4, the mounting base 5 shown in Figure 18 must be mounted on the inner side of the end of the quick-change bracket 2 near the electrical connector. Alternatively, the mounting base 5 shown in Figure 18 can also be used to mount the mounting member 4 whose connecting portion 41 extends vertically.

[0085] As shown in Figure 20, another type of hanging seat 5 is shown that cooperates with the hanging part 4 extending in the vertical direction with the connecting part 41. The side of the hanging seat 5 has a hanging groove 52 extending in the horizontal direction. The bottom of the hanging groove 52 is a supporting part 53, which is used to support and support the hanging shaft 421 of the hanging part 4. The weight of the battery pack 1 is mainly borne by the supporting part 53. Furthermore, the bottom of the hanging seat 5 is provided with an avoidance groove 54, which is connected to the hanging groove 52 and is used to avoid the connecting part 41 of the hanging part 4. When hanging, the hanging part 4 moves in the vertical direction to the first height position corresponding to the hanging groove 52, and moves in the horizontal direction from the first height position to the hanging point in the hanging groove 52, so as to realize reliable hanging of the hanging part 4 and the hanging seat 5.

[0086] It should be noted that the movement of the hook shaft 421 is both vertical and horizontal, making the hooking and unhooking of the hook member 4 simple and easy to operate, thereby facilitating the automatic quick replacement of the battery pack. Furthermore, the hook seat 5 shown in FIG20 can also be used to hook a hook member 4 whose connecting portion 41 extends horizontally.

[0087] Example 3

[0088] As shown in Figures 1-6, the electric vehicle includes a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. The battery pack 1 is provided with a hook 4 on the side of the battery pack 1 away from the electrical connector 10 along the length direction 100. The hook 4 is used to hook to the hook seat 5 on the quick-change bracket 2. The hook seat 5, which cooperates with the hook 4, is provided on the side of the quick-change bracket 2 facing the battery pack 1 or on the side away from the battery pack 1.

[0089] In a specific embodiment, as shown in Figures 2 to 4, the hanging part 4 is connected to the bottom surface of the battery pack 1. Compared with connecting the hanging part 4 to the top surface of the battery pack 1, the force point is located below the shell of the battery pack, and the battery pack 1 is lifted from the bottom to the top. The shell of the battery pack 1 plays a major supporting role. In this embodiment, the supporting and lifting effect of connecting the hanging part 4 to the bottom surface of the battery pack 1 is better, and the overall force of the battery pack 1 is more evenly distributed. As shown in Figures 2 to 4, the connecting portion 41 of the hanging part 4 extends in the vertical direction. The hanging part 4 is connected to the bottom surface of the battery pack 1 through the flange structure 6 of the battery pack 1. Since the flange structure 6 is easy to be integrally formed with the shell of the battery pack 1, the structural setting method of connecting the hanging part 4 to the bottom surface of the battery pack 1 through the flange structure 6 of the battery pack 1 in this embodiment has the advantages of easy processing and easy manufacturing.

[0090] When the connecting portion 41 of the hook member 4 extends vertically, the corresponding mounting base 5 includes mounting bases 5 as shown in Figures 9, 18, and 19. The hook member 4 in Figure 19 can also be rotated 90 degrees clockwise downward to be mounted vertically within the mounting base 5. Figure 9 illustrates the hook member 4 and mounting base 5 mounted vertically. During mounting, the mounting shaft 421 of the hook member 4 first moves vertically to a first height position corresponding to the opening slot 51, then moves horizontally so that the mounting shaft 421 is positioned within the mounting slot 52 (as shown in Figure 9), thereby achieving secure mounting of the hook member 4 and mounting base 5. It should be noted that because the mounting member 4 moves linearly in both the vertical and horizontal directions, the mounting and unmounting movements of the hook member 4 are simple and easy to perform, facilitating the automatic quick replacement of battery packs. When installing the mounting base 5 , in order to mount accurately, the mounting directions and travels of all mounting bases 5 need to be kept consistent.

[0091] In other alternative embodiments, when the connection portion 41 of the hooking member 4 is extended in the vertical direction, the hooking seat 5 used in conjunction therewith also includes a hooking seat 5 as shown in Figures 20 and 10, wherein Figure 10 is a schematic diagram of the hooking member 4 and the hooking seat 5 when hooked in the vertical direction. During hooking, the hooking member 4 moves in the vertical direction to the first height position corresponding to the hooking groove 52, and moves in the horizontal direction from the first height position to the hooking point in the hooking groove 52, thereby achieving reliable hooking of the hooking member 4 and the hooking seat 5. The movement direction of the hooking shaft 421 is both linear motion in the vertical direction and linear motion in the horizontal direction, which makes the movement of the hooking member 4 simple when hooking and disconnecting, and easy to implement during operation, so as to quickly realize automatic quick replacement of the battery pack.

[0092] In another specific embodiment, as shown in Figures 11-13, the connecting portion 41 of the hanger 4 extends horizontally, creating a cantilevered structure. This cantilevered structure provides flexibility and improved shock resistance, resulting in a more compact battery pack structure compared to a hanger 4 with the connecting portion 41 extending vertically. As shown in Figures 11-13, the hanger 4 is connected to the side of the battery pack 1 via a mounting base 7. The mounting base 7 is provided with multiple connecting holes 71 for the connecting members to pass through. The hanger 4 is connected to the side of the battery pack 1 by passing the connecting members through the connecting holes 71 in the mounting base 7. In this embodiment, the connecting members are bolts or screws. To facilitate horizontal movement of the hanging portion 42 and smooth attachment to the mounting base 5, the attachment shaft 421 of the hanging portion 42 also extends horizontally. When installing the mounting base 5, for accurate attachment, the attachment direction and travel of all mounting bases 5 must be consistent.

[0093] When the connecting portion 41 of the hooking member 4 is extended in the horizontal direction, the hooking seat 5 used in conjunction with it is shown in Figures 16 and 17. During hooking, the hooking shaft 421 of the hooking member 4 first moves in the vertical direction to a first height position corresponding to the opening slot 51, and then moves in the horizontal direction so that the hooking shaft 421 is located in the hooking slot 52 (as shown in Figure 17), thereby achieving reliable hooking of the hooking member 4 and the hooking seat 5. It should be noted that the movement direction of the hooking member 4 is both linear motion in the vertical direction and linear motion in the horizontal direction, which makes the movement of the hooking member 4 simple when hooking and unhooking, and easy to implement during operation, so as to quickly realize automatic quick replacement of the battery pack. Optionally, as shown in Figures 1 to 13, the battery pack 1 is provided with hanging parts 4 on both sides close to and away from the electrical connector 10 along the length direction 100, and a hanging seat 5 that cooperates with the hanging parts 4 is arranged on the quick-change bracket 2 to increase the hanging points of the battery pack 1, so that the connection between the battery pack 1 and the quick-change bracket 2 is firm.

[0094] It should be noted that the movement direction of the battery pack 1 is first vertically upward and then horizontally forward. In this embodiment, the hanging seat 5 arranged at the rear end of the quick-change bracket 2 includes a hanging seat shown in Figure 18, another hanging seat shown in Figure 20 and another hanging seat shown in Figure 16. The battery pack 1 first moves upward in the vertical direction to the first height position corresponding to the hanging groove 52, and then moves forward in the horizontal direction to enter the hanging point in the hanging groove 52.

[0095] It should be further explained that, since the plug-in direction of the electrical connector 10 in the example figure provided in this article is certain, the moving direction of the battery pack 1 is first upward and then forward (the end where the electrical connector 10 is located is the front end). Therefore, when setting the mounting seat 5, it is necessary to keep the mounting direction and stroke of all mounting seats 5 consistent. The mounting member 4 first rises vertically to a first height position corresponding to the mounting groove 52, and then moves horizontally from the first height position, so that the mounting shaft 421 of the mounting member 4 enters the mounting point in the mounting groove 52 of the mounting seat 5, so that the battery pack 1 can be quickly mounted on the quick-change bracket 2.

[0096] Example 4

[0097] As shown in Figures 1 and 5-7, the electric vehicle includes a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. The quick-change bracket 2 is provided with a mounting seat 5 on the side away from the electrical connector 10 along the length direction 100. The battery pack 1 is correspondingly provided with a mounting member 4. The mounting seat 5 is used to mount the corresponding mounting member 4 on the battery pack 1.

[0098] As shown in Figures 16 and 17, a mounting seat 5 is shown that cooperates with a mounting member 4 that extends horizontally from a connecting portion 41. In order to simultaneously achieve the connection of the electrical connector and the mounting of the mounting member, the mounting seat 5 shown in Figure 16 needs to be installed on the inner side of the end of the quick-change bracket 2 away from the electrical connector. Since the electrical connector 10 includes a first part and a second part that plug into each other, when the electrical connector 10 is installed at the front end, the plugging direction of the electrical connector 10 is first upward and then forward, and the mounting direction of the mounting member 4 is also first upward and then forward. Therefore, the mounting seat 5 shown in Figure 16 can only be installed on the inner side of the end of the quick-change bracket 2 away from the electrical connector 10, rather than the outer side. As shown in Figures 5 to 7, the mounting seat 5 shown in Figures 16 and 17 is installed on the end of the quick-change bracket away from the electrical connector, and the mounting seat 5 is located on the inner side of the quick-change bracket 2.

[0099] As shown in Figures 16 and 17, the bottom of the mounting seat 5 has an open slot 51 and a mounting slot 52 connected to the open slot 51 and extending horizontally. The mounting member 4 moves vertically to a first height position corresponding to the first height position in the open slot 51 and the mounting slot 52, and then moves horizontally from the first height position to a mounting point in the mounting slot 52. During mounting, the mounting shaft 421 of the mounting member 4 first moves vertically into the open slot 51 and then horizontally into the mounting slot 52, thereby achieving reliable mounting of the mounting member 4 and the mounting seat 5. It should be noted that since the movement direction of the mounting shaft 421 is both linear motion in the vertical direction and linear motion in the horizontal direction, the mounting member 4 is simple in mounting and disengaging, and is easy to operate, so as to facilitate the automatic quick replacement of the battery pack 1.

[0100] Furthermore, in order to ensure that both ends of the hooking shaft 421 are located in the hooking groove 52, an avoidance groove 54 is provided in the vertical direction of the hooking seat 5 to accommodate the connecting portion 41 of the hooking component 4, so as to improve the hooking effect. As shown in Figures 16 to 19, the bottom of the hooking groove 52 is a supporting portion 53, which is used to support and support the hooking shaft 421 of the hooking component 4. The weight of the battery pack 1 is mainly borne by the supporting portion 53. Furthermore, an avoidance groove 54 is provided at the bottom of the hooking seat 5. The avoidance groove 54 is connected to the hooking groove 52 and is used to avoid the connecting portion 41 of the hooking component 4. When hooking, the hooking component 4 enters the hooking seat 5 through the opening groove 51. The avoidance groove 54 is used to avoid the connecting portion 41 of the hooking component 4 to prevent the connecting portion 41 from interfering with the hooking seat 5, resulting in a failure of the hooking. The avoidance groove and the opening groove 51 are independent of each other.

[0101] As shown in Figure 18, a mounting base 5 is shown that cooperates with a mounting member 4 extending vertically from a connecting portion 41. In order to simultaneously connect the electrical connector and mount the mounting member, the mounting base 5 shown in Figure 18 must be installed on the outside of the end of the quick-change bracket 2 away from the electrical connector 10. Because the electrical connector 10 includes a first portion and a second portion that plug into each other, when the electrical connector 10 is installed at the front end, the plugging direction of the electrical connector 10 is first upward and then forward, and accordingly, the mounting direction of the mounting member 4 is also first upward and then forward. Therefore, the mounting base 5 shown in Figure 18 can only be installed on the outside of the end of the quick-change bracket 2 away from the electrical connector 10, rather than on the inside.

[0102] As shown in Figure 18, the side of the mounting base 5 has a vertically disposed opening slot 51 and a horizontally extending mounting slot 52 that communicates with the opening slot 51. Mounting slot 52 also has an opening on its side. The mounting member 4 moves vertically to a first height position corresponding to the opening slot 51 and then moves horizontally from the first height position to a mounting point within the mounting slot 52. As shown in Figures 5 and 6, the mounting base 5 shown in Figure 18 is mounted on the inner side of the quick-change bracket 2 near the electrical connector.

[0103] The connecting portion 41 of the hooking member 4 used in pair with the hooking seat 5 shown in Figure 18 is set vertically (as shown in Figures 2 to 4). When hanging, the hanging shaft 421 of the hanging member 4 first moves in the vertical direction to the first height position corresponding to the opening groove 51, and then moves in the horizontal direction, so that the connecting portion 41 of the hanging member 4 is located in the vertically set opening groove 51, and at the same time, both ends of the hanging shaft 421 are located in the hanging groove 52, so that the hanging member 4 and the hooking seat 5 are reliably hung, and the hanging effect is improved. It should be noted that since the moving directions of the hanging member 4 are both linear motion in the vertical direction and linear motion in the horizontal direction, the movement of the hanging member 4 during hanging and disconnecting is simple and easy to implement during operation, so as to quickly realize the automatic quick replacement of the battery pack.

[0104] Figure 20 shows another mounting base 5 that cooperates with a mounting member 4 extending vertically from a connecting portion 41. Unlike the mounting base 5 in Figure 18, the area near the top of the mounting base 5 is closed, without an opening extending through the top. This increases the contact area between the mounting base 5 and the inner wall of the receiving groove, and in turn, the contact area with the quick-change bracket 2. This improves the structural stability of the mounting base 5 on the quick-change bracket 2 and the structural strength of the mounting base 5 itself, thereby enhancing the stability and reliability of the mounting member 4 and the battery pack 1 when mounted.

[0105] In this embodiment, the mounting seat 5 is provided with an avoidance groove 54 for avoiding the connection portion 41 of the mounting member 4. The avoidance groove 54 is located in the middle area of ​​the bottom of the horizontally extending mounting groove 52. The avoidance groove 54 is used to divide the mounting groove 52 into two relatively independent mounting grooves 52. When the mounting shaft 421 moves into the mounting seat 5, the two ends of the mounting shaft 421 are respectively located in the two relatively independent mounting grooves 52, while the vertically arranged connection portion 41 is located in the avoidance groove 54, thereby increasing the mounting stability by increasing the number of mounting nodes. It should be noted that the avoidance groove 54 in Figure 20 is located at the lower end of the mounting seat 5. When mounting, the mounting shaft 421 of the mounting member 4 first moves vertically to the same height as the mounting groove 52, and then moves horizontally into the mounting groove 52, thereby achieving reliable mounting of the mounting member 4 and the mounting seat 5.

[0106] FIG10 is a partial cross-sectional view of the mounting base 5 in FIG20 embedded in the quick-change bracket 2, thereby reducing the volume of the mounting base 5 and simplifying the structural arrangement.

[0107] Example 5

[0108] As shown in Figures 2-4, the electric vehicle includes a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. The battery pack 1 is provided with a hanging member 4 on the end face or side face. The battery pack 1 is hung to the quick-change bracket 2 via the hanging member 4. The hanging member 4 includes a connecting portion 41 and a hanging portion 42. The connecting portion 41 and the hanging portion 42 are arranged at an angle, and the connecting portion 41 extends in the vertical direction.

[0109] As shown in Figures 2 to 4, in this embodiment, the hanging part 4 is connected to the bottom surface of the battery pack 1. Compared with connecting the hanging part 4 to the top surface of the battery pack 1, the force point is located below the shell of the battery pack, which is lifted from the bottom up. The shell of the battery pack plays a major supporting role. In this embodiment, connecting the hanging part 4 to the bottom surface of the battery pack 1 has a better supporting and lifting effect, and the overall force on the battery pack 1 is more evenly distributed.

[0110] As shown in Figures 2-4 , the connecting portion 41 of the hanging member 4 extends vertically. The hanging member 4 is connected to the bottom surface of the battery pack 1 via the flange structure 6 of the battery pack 1. Because the flange structure 6 is easily integrated with the housing of the battery pack 1, the structural arrangement of connecting the hanging member 4 to the bottom surface of the battery pack 1 via the flange structure 6 of the battery pack 1 in this embodiment has the advantages of easy processing and manufacturing.

[0111] Optionally, as shown in FIG8 , when the connecting portion 41 of the hanging member 4 is extended in the vertical direction, the hanging seat 5 as shown in FIG20 is embedded in the quick-change bracket 2 , thereby reducing the volume of the hanging seat 5 and simplifying the structural setting.

[0112] Example 6

[0113] As shown in FIG8 , the electric vehicle includes a battery pack 1, a quick-change bracket 2 and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 through the locking members 31 and the locking seat 32. The quick-change bracket 2 is provided with a "hanging seat 5 that cooperates with the hanging member 4 extending in the vertical direction from the connecting portion 41 in Example 5. Specifically, the opening of the hanging seat 5 faces the side of the quick-change bracket 2 away from the battery pack 1, and is used to hang the hanging member 4 extending in the vertical direction from the connecting portion 41 in Example 5. It should be noted that "the opening of the hanging seat 5 faces the side of the quick-change bracket 2 away from the battery pack 1" means that the opening of the hanging seat 5 faces outward.

[0114] As shown in Figure 18, a mounting base 5 is shown that cooperates with a mounting member 4 extending vertically from a connecting portion 41. The mounting base 5 has a vertically disposed opening 51 on its side, and a horizontally extending mounting slot 52 that communicates with the opening 51. The mounting slot 52 also has an opening on its side. The mounting member 4 moves vertically to a first height position corresponding to the opening 51, and then moves horizontally from the first height position to a mounting point within the mounting slot 52.

[0115] The connecting portion 41 of the hooking member 4 used in conjunction with the hooking seat 5 shown in FIG18 is arranged vertically (as shown in FIG8-2). During hooking, the hooking shaft 421 of the hooking member 4 first moves vertically to a first height position corresponding to the opening slot 51, and then moves horizontally so that the connecting portion 41 of the hooking member 4 is located within the vertically arranged opening slot 51. At the same time, both ends of the hooking shaft 421 are located within the hooking slots 52, thereby achieving reliable hooking of the hooking member 4 and the hooking seat 5 and improving the hooking effect.

[0116] Figure 20 shows another mounting base 5 that cooperates with a mounting member 4 extending vertically from a connecting portion 41. Unlike the mounting base 5 in Figure 18, the area near the top of the mounting base 5 is closed, without an opening extending through the top. This increases the contact area between the mounting base 5 and the inner wall of the receiving groove, and in turn, the contact area with the quick-change bracket 2. This improves the structural stability of the mounting base 5 on the quick-change bracket 2 and the structural strength of the mounting base 5 itself, thereby enhancing the stability and reliability of the mounting member 4 and the battery pack 1 when mounted.

[0117] In this embodiment, the mounting seat 5 is provided with an avoidance groove 54 for avoiding the connection portion 41 of the mounting member 4. The avoidance groove 54 is located in the middle area of ​​the bottom of the horizontally extending mounting groove 52. The avoidance groove 54 is used to divide the mounting groove 52 into two relatively independent mounting grooves 52. When the mounting shaft 421 moves into the mounting seat 5, the two ends of the mounting shaft 421 are respectively located in the two relatively independent mounting grooves 52, while the vertically arranged connection portion 41 is located in the avoidance groove 54, thereby increasing the mounting stability by increasing the number of mounting nodes. It should be noted that the avoidance groove 54 in Figure 20 is located at the lower end of the mounting seat 5. When mounting, the mounting shaft 421 of the mounting member 4 first moves vertically to the same height as the mounting groove 52, and then moves horizontally into the mounting groove 52, thereby achieving reliable mounting of the mounting member 4 and the mounting seat 5.

[0118] Alternatively, as shown in FIG8 , the mounting base 5 shown in FIG20 can be embedded in the quick-change bracket 2, thereby reducing the volume of the mounting base 5 and simplifying the structural arrangement. FIG10 is a partial cross-sectional view of the mounting base 5 in FIG20 embedded in the quick-change bracket 2, thereby reducing the volume of the mounting base 5 and simplifying the structural arrangement.

[0119] Example 7

[0120] As shown in Figures 11-13, the electric vehicle includes a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. The battery pack 1 is provided with a hanging member 4 on the end face or side face. The battery pack 1 is hung to the quick-change bracket 2 via the hanging member 4. The hanging member 4 includes a connecting portion 41 and a hanging portion 42. The connecting portion 41 and the hanging portion 42 are arranged at an angle, and the connecting portion 41 extends horizontally.

[0121] As shown in Figures 11 to 13, the connecting portion 41 of the hanging member 4 is extended in the horizontal direction, so that the connecting portion has a cantilever structure. The hanging member 4 with a cantilever structure has a certain flexibility and better shock resistance. Compared with the hanging member 4 with the connecting portion 41 extending in the vertical direction, the structure of the battery pack is more compact.

[0122] As shown in Figures 11-13, the hanging member 4 is connected to the side of the battery pack 1 via the mounting base 7. The mounting base 7 is provided with multiple connecting holes 71 for the connecting members to pass through. The hanging member 4 is connected to the side of the battery pack 1 by passing the connecting members through the connecting holes 71 on the mounting base 7. Specifically, in this embodiment, the connecting members are bolts or screws. To facilitate horizontal movement of the hanging portion 42 and stable attachment to the mounting base 5, the hanging portion 42's hanging axis 421 also extends horizontally.

[0123] When the connecting portion 41 of the hanging member 4 is extended in the horizontal direction, the hanging seat 5 used in pair with it is shown in Figures 16 to 19. When the hanging seat is installed, in order to accurately hang, the hanging direction and stroke of all the hanging seats 5 need to be kept consistent.

[0124] During attachment, the attachment shaft 421 of the attachment member 4 first moves vertically to a first height position corresponding to the opening slot 51, and then moves horizontally so that the attachment shaft 421 is located within the attachment slot 52 (as shown in FIG17 ), thereby achieving reliable attachment of the attachment member 4 to the attachment seat 5. Since the connecting portion 41 of the attachment member 4 is arranged horizontally, the attachment shaft 421 is located within the attachment slot 52 during attachment.

[0125] Example 8

[0126] As shown in Figures 1-7, the electric vehicle includes a battery pack 1, a quick-change bracket 2, and a locking mechanism 3. The locking mechanism 3 includes a locking member 31 and a locking seat 32. The battery pack 1 is provided with locking members 31 on opposite sides along the width direction 200. The locking members 31 extend along the width direction 200 of the battery pack 1. The battery pack 1 is detachably connected to the quick-change bracket 2 via the locking members 31 and the locking seat 32. The quick-change bracket 2 is provided with a mounting seat 5 that cooperates with the "mounting member 4 extending horizontally from the connection portion 41 in Example 7." Specifically, the mounting seat 5 opens toward the side of the quick-change bracket 2 near the battery pack 1 and is used to mount the mounting member 4 extending vertically from the connection portion 41 in Example 7. It should be noted that "the mounting seat 5 opens toward the side of the quick-change bracket 2 near the battery pack 1" means that the mounting seat 5 opens inward.

[0127] As shown in Figures 16 and 17, a mounting base 5 is shown that cooperates with a mounting member 4 extending horizontally from a connecting portion 41. The mounting base 5 has an open slot 51 at its bottom and a horizontally extending mounting slot 52 that communicates with the open slot 51. The mounting member 4 moves vertically to a first height position within the open slot 51 corresponding to the mounting slot 52, and then moves horizontally from the first height position to a mounting point within the mounting slot 52. During mounting, the mounting shaft 421 of the mounting member 4 first moves vertically into the open slot 51 and then horizontally into the mounting slot 52, achieving reliable mounting of the mounting member 4 and the mounting base 5.

[0128] It should be noted that since the moving directions of the hanging shaft 421 are linear motion in the vertical direction and linear motion in the horizontal direction, the movement of the hanging component 4 during hanging and disconnecting is simple and easy to implement during operation, so as to quickly realize the automatic quick replacement of the battery pack 1.

[0129] As shown in FIG5-FIG7 , a hanging seat 5 shown in FIG16 and FIG17 is installed at one end of the quick-change bracket away from the electrical connector. The hanging seat 5 is located on the inner side of the quick-change bracket 2 .

[0130] Furthermore, to ensure both ends of the attachment shaft 421 are located within the attachment slot 52, a vertical clearance groove 54 is provided on the attachment base 5 to accommodate the connecting portion 41 of the attachment member 4, thereby enhancing the attachment effect. As shown in Figures 16 and 17, the bottom of the attachment slot 52 forms a support portion 53, which is used to abut and support the attachment shaft 421 of the attachment member 4. The weight of the battery pack 1 is primarily borne by the support portion 53.

[0131] As shown in Figures 18 and 19, another type of hanging seat 5 is shown that cooperates with the hanging member 4 that extends horizontally from the connecting portion 41. The side of the hanging seat 5 has a vertically arranged opening slot 51, and a hanging slot 52 that is connected to the opening slot 51 and extends horizontally. The side of the hanging slot 52 also has an opening. The hanging member 4 moves in the vertical direction to the first height position corresponding to the opening slot 51, and moves in the horizontal direction from the first height position to the hanging point in the hanging slot 52. As shown in Figure 18, the bottom of the hanging slot 52 is a supporting portion 53, which is used to support and support the hanging shaft 421 of the hanging member 4. The weight of the battery pack 1 is mainly borne by the supporting portion 53.

[0132] Furthermore, a clearance groove 54 is provided at the bottom of the mounting base. This clearance groove 54 communicates with the mounting groove 52 and is used to clear the connection portion 41 of the mounting member 4. The clearance groove 54 is part of the opening groove 51 and is located at the lower end of the opening groove 51. During mounting, the mounting member 4 enters the mounting base 5 through the opening groove 51. The clearance groove 54 clears the connection portion 41 of the mounting member 4, preventing interference between the connection portion 41 and the mounting base 5, which could result in mounting failure.

[0133] When hanging, the hanging shaft 421 of the hanging member 4 first moves in the vertical direction to the first height position corresponding to the opening groove 51, and then moves in the horizontal direction, so that the connecting part 41 of the hanging member 4 is located in the vertically arranged opening groove 51, and at the same time, both ends of the hanging shaft 421 are also located in the hanging groove 52, thereby realizing reliable hanging of the hanging member 4 and the hanging seat 5 and improving the hanging effect.

[0134] In this article, the electrical connector 10 includes a first part and a second part, which are respectively mounted on the battery pack 1 and the quick-change bracket 2 for mutual plug-in connection.

[0135] In addition, the hanging seat 5 shown in Figure 20 can also be used to hang the hanging member 4 with the connecting portion 41 extending in the horizontal direction. Its specific structure can be found in the previous description and will not be repeated here.

[0136] Although specific embodiments of the present invention have been described above, those skilled in the art will appreciate that these are merely illustrative and that the scope of the present invention is defined by the appended claims. Those skilled in the art may make various changes or modifications to these embodiments without departing from the principles and essence of the present invention, and such changes and modifications are intended to fall within the scope of the present invention.

Claims

1. An electric vehicle, comprising a battery pack, a quick-change bracket and a locking mechanism, wherein the locking mechanism comprises a locking member and a locking seat, wherein the locking members are arranged on opposite sides of the battery pack in the width direction, the locking members extend in the width direction of the battery pack, and the battery pack is detachably connected to the quick-change bracket through the locking member and the locking seat, characterized in that: The battery pack is provided with a hanging member on at least one side along the length direction, and the quick-change bracket is correspondingly provided with a hanging seat, and the hanging member is hung on the hanging seat.

2. The electric vehicle according to claim 1, characterized in that: The hanging component is connected to the side surface or bottom surface of the battery pack.

3. The electric vehicle according to claim 1 or 2, characterized in that: The hanging member is connected to the flange structure of the battery pack or is connected to the battery pack through a mounting seat.

4. The electric vehicle according to at least one of claims 1 to 3, characterized in that: The hanging member includes a connecting portion and a hanging portion, one end of the connecting portion is connected to the battery pack, and the other end of the connecting portion is connected to the hanging portion, the hanging portion is located on the side of the battery pack, and the hanging member is hung in the hanging seat through the hanging portion.

5. The electric vehicle according to claim 4, characterized in that: The connecting portion and the hanging portion are arranged at an angle, and the connecting portion extends in a vertical direction or in a horizontal direction.

6. The electric vehicle according to claim 4 or 5, characterized in that: The hooking portion protrudes from the connecting portion and extends in a direction away from the connecting portion.

7. The electric vehicle according to at least one of claims 4 to 6, characterized in that: The hanging part comprises a hanging shaft, which is extended in the horizontal direction, a middle part of the hanging shaft is connected to the end of the connecting part, and both ends of the hanging shaft are exposed on the surface of the connecting part.

8. The electric vehicle according to claim 7, characterized in that: Both ends of the hanging shaft exposed from the connecting portion are sleeved with shaft sleeves; And / or, both end surfaces of the hanging shaft are provided with blind holes; And / or, the hanging shaft passes through the connecting portion.

9. The electric vehicle according to at least one of claims 1 to 8, characterized in that: The mounting seat is mounted on the quick-change bracket, and / or the mounting seat is embedded in the quick-change bracket.

10. The electric vehicle according to at least one of claims 1 to 9, characterized in that: The battery pack includes an electrical connector, the hanging component is provided on a side of the battery pack close to the electrical connector along the length direction, and the hanging seat matching with the hanging component is arranged on a side of the quick-change bracket facing the battery pack; and / or, the battery pack is provided with a hanging component on a side of the battery pack away from the electrical connector along the length direction, and the hanging seat matching with the hanging component is arranged on a side of the quick-change bracket facing the battery pack or on a side away from the battery pack.

11. The electric vehicle according to at least one of claims 1 to 10, characterized in that: The side of the hanging seat has an opening groove arranged vertically, and a hanging groove connected with the opening groove and extending in the horizontal direction. The side of the hanging groove also has an opening. The hanging member moves in the vertical direction to a first height position corresponding to the opening groove, and moves in the horizontal direction from the first height position to enter the hanging point in the hanging groove.

12. The electric vehicle according to at least one of claims 1 to 11, characterized in that The bottom of the hanging seat has an open groove and a hanging groove connected to the opening groove and extending in the horizontal direction. The hanging member moves in the vertical direction to a first height position in the opening groove corresponding to the hanging groove, and moves in the horizontal direction from the first height position to a hanging point in the hanging groove.

13. The electric vehicle according to at least one of claims 1 to 12, characterized in that The side of the hanging seat has a hanging groove extending in the horizontal direction. The hanging member moves in the vertical direction to a first height position corresponding to the hanging groove, and moves in the horizontal direction from the first height position to a hanging point in the hanging groove.

14. The electric vehicle according to any one of claims 11 to 13, characterized in that: The bottom of the hanging groove is a supporting portion, which is used to abut against and support the hanging shaft of the hanging member.

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