Battery replacement tray for electric vehicle and electric vehicle

Abstract

The battery replacing tray is fixedly arranged on a vehicle body girder, at least part of the battery replacing tray is located on the side portion of the vehicle body girder, and a locking structure is arranged at the bottom of the battery replacing tray. The locking structure is used for being matched with a lock connecting structure on the battery pack so that the battery pack can be detachably connected to the lower portion of the vehicle body girder in the vertical direction. The electric vehicle comprises a vehicle body girder, a battery changing tray and a battery pack. According to the battery replacing tray for the electric vehicle and the electric vehicle, the battery replacing tray is used for installing the battery pack, the battery pack is convenient to install, the battery replacing tray is arranged at the bottom of the vehicle body girder, so that the battery pack is installed at the bottom of the vehicle body girder, and the battery pack arranged at the bottom of the vehicle body girder can reduce the overall gravity center height of the electric vehicle; the operation stability of the electric vehicle is improved, and the battery pack and the battery replacing tray can be quickly disassembled or connected through detachable connection of the lock connecting structure and the locking structure.

Description

[0001] This application is a divisional of a Chinese invention patent with an application date of December 31, 2021, application number 202111673381.6, and name “Battery swap pallet for electric vehicles and electric vehicle”. Technical Field

[0002] The present invention relates to the field of battery replacement technology, and in particular to a battery replacement tray for an electric vehicle and an electric vehicle. Background Art

[0003] Current electric quick-swap trucks usually install the battery pack on the truck's body beam, which is also called the longitudinal beam. The longitudinal beam is one of the key parts of the vehicle frame and plays a load-bearing role on the vehicle. Since the truck's battery pack is heavy (about 3 tons), the quick-swap battery box (or charging battery pack) is set above the body beam. The body beam is higher than the ground in the whole vehicle, which makes the center of gravity of the battery pack higher and the relative safety of the vehicle is poor. The battery pack occupies a large space behind the driver, making the driver's driving experience poor. In addition, since the battery pack is set above the longitudinal beam, the battery pack can only be replaced through a hoisting structure. With a hoisting structure, the overall building of the battery swap station is high, occupies a large area, has high maintenance costs and poor safety. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the defect of a relatively high center of gravity of a battery pack in the prior art and to provide a battery replacement tray for an electric vehicle and an electric vehicle.

[0005] The present invention solves the above technical problems through the following technical solutions:

[0006] A battery swap tray for an electric vehicle, the vehicle comprising a body beam, the battery swap tray being used to mount a battery pack, the battery swap tray being fixedly disposed on the body beam, at least a portion of the battery swap tray being located on a side of the body beam, a plurality of locking structures being disposed at the bottom of the battery swap tray, the locking structures being used to cooperate with a lock connection structure on the battery pack to detachably connect the battery pack to the bottom of the body beam in a vertical direction;

[0007] The battery exchange tray includes a tray body, the battery exchange tray includes a plurality of side support frames, the bottom of the side support frames is fixedly connected to the tray body, and the tray body is connected to the vehicle body beam through the side support frames;

[0008] The tray body is located below the vehicle body beam;

[0009] The vehicle body beam comprises two beams arranged side by side and extending in the longitudinal direction, and a plurality of side support frames are respectively fixedly connected to the side walls of the two beams which are opposite to each other.

[0010] In this solution, a battery swap tray is provided for installing a battery pack. The battery pack is easy to install. The battery swap tray is provided at the bottom of the vehicle body beam so that the battery pack is installed at the bottom of the vehicle body beam. The battery pack provided at the bottom of the vehicle body beam can lower the overall center of gravity height of the electric vehicle and improve the stability of the operation of the electric vehicle. By providing a detachable connection of a lock connection structure and a locking structure, the battery pack and the battery swap tray can be quickly disassembled or connected.

[0011] At the same time, the battery swap tray is fixed to the side of the vehicle body frame through the side support frame, and the side support frame increases the connection strength between the battery swap tray and the vehicle body frame.

[0012] In addition, by disposing the tray body under the vehicle body beam, the battery pack is disposed under the vehicle body beam. In this way, the battery pack can lower the center of gravity of the vehicle body structure and improve the stability of vehicle operation.

[0013] In addition, the side support frames are fixedly connected to the two beams respectively. The two side support frames are symmetrically arranged and symmetrically stressed, thereby improving the stability of the connection between the battery swap tray and the vehicle body beam.

[0014] Preferably, the locking structure comprises a lock base, the lock base is provided with an opening for the lock connection structure to enter, and the opening is arranged downward.

[0015] In this solution, the opening of the lock base is set downward. When replacing the battery pack, the battery pack is installed from bottom to top and the lock connection structure is inserted into the downward opening of the lock base to achieve the coordinated connection between the lock connection structure and the lock base, making the connection between the lock connection structure and the lock base more convenient.

[0016] Preferably, the locking structure is distributed in the periphery and middle area of ​​the battery exchange tray.

[0017] In this solution, locking structures are provided on the periphery and middle area of ​​the battery swap tray, and the connection points between the battery pack and the battery swap tray are increased, so that the load of the battery pack is evenly borne on various parts of the battery swap tray, thereby improving the stability of the battery swap tray in carrying the battery pack.

[0018] Preferably, the number of the tray body is one, and the tray body is fixedly connected to the bottom of the vehicle body beam and / or the side wall of the vehicle body beam.

[0019] In this solution, the pallet body is connected to the bottom of the vehicle body beam and / or the side wall of the vehicle body beam. The pallet body is connected through the side wall, which saves installation space on the vehicle body beam and improves the stability of the connection between the pallet body and the vehicle beam.

[0020] Preferably, the number of the tray bodies is two, and the two tray bodies are respectively fixedly connected to opposite sides of the vehicle body beam.

[0021] In this solution, two trays are respectively arranged on both sides of the vehicle body beam, and the load of the battery pack is evenly transferred to the vehicle body beam through the two tray bodies, thereby improving the uniformity of the load borne by the vehicle body beam.

[0022] Preferably, a connecting and mounting piece is provided at the bottom of the tray body, and the locking structure is provided on the connecting and mounting piece.

[0023] In this solution, the connecting mounting piece is used to install the lock base, and the mounting piece is connected to the lock base through screws to achieve the connection between the lock base and the tray body.

[0024] Preferably, the pallet body includes a plurality of transverse beams and a plurality of longitudinal beams, the longitudinal beams extending in the same direction as the vehicle body beams, and at least part of the locking structure is distributed on the longitudinal beams and / or the transverse beams at the ends of the pallet body.

[0025] In this solution, a plurality of cross beams and longitudinal beams are arranged in the pallet body, and the cross beams and longitudinal beams are connected to each other in the external frame of the pallet body, thereby improving the structural strength of the pallet body.

[0026] Preferably, the pallet body further comprises a reinforcing rod, and the reinforcing rod connects a plurality of the longitudinal beams.

[0027] In this solution, the reinforcing rod and the longitudinal beam are integrally formed and welded, and the reinforcing rod enhances the connection strength between the longitudinal beams.

[0028] Preferably, the reinforcing rod is arranged parallel to the cross beam.

[0029] In this solution, the reinforcing rods and the cross beams are arranged in parallel, and the reinforcing rods are connected to the longitudinal beams, thereby improving the connection strength between the longitudinal beams and improving the structural strength of the pallet body.

[0030] Preferably, the locking structure is provided on the reinforcing rod.

[0031] In this solution, a locking structure is provided on the reinforcing rod to increase the connection points between the battery pack and the battery swap tray, thereby increasing the reliability of the connection between the battery pack and the battery swap tray.

[0032] Preferably, the height of the locking structure located on the reinforcing rod is greater than the height of the locking structure located on the longitudinal beam and / or the cross beam.

[0033] In this solution, the lock connection structure that cooperates with the locking structure located on the reinforcing rod needs to pass through the battery pack body. The lock connection structure is lengthened and the connection is more stable.

[0034] Preferably, the battery swap tray is provided with a mounting hole, and the mounting hole is used to install a connecting piece, and the battery swap tray is fixedly connected to the bottom of the vehicle body beam and / or the side wall of the vehicle body beam through the connecting piece.

[0035] In this solution, mounting holes are opened on the battery swap tray, and the battery swap tray is fixedly connected to the vehicle body frame through the mounting holes.

[0036] Preferably, the connecting member is arranged on the top of the battery swap tray, and the battery swap tray is fixedly connected to the bottom of the vehicle body beam through the connecting member.

[0037] In this solution, a connecting piece is provided on the top of the battery swap tray to achieve a reliable connection between the battery swap tray and the vehicle body beam.

[0038] Preferably, the connecting member is arranged on the reinforcing rod.

[0039] In this solution, by setting connecting parts on the reinforcing rod, the connection between the battery swap tray and the reinforcing rod is achieved, and the connection points between the battery swap tray and the battery pack are increased, so that the load of the battery pack can be evenly distributed on the battery swap tray, avoiding the load of the battery pack being concentrated at a certain point on the battery swap tray.

[0040] Preferably, the connecting member is arranged at one end of the side support frame facing the vehicle body beam, and the battery exchange tray is fixedly connected to the side wall of the vehicle body beam through the connecting member.

[0041] In this solution, the connecting member is arranged between the side support frame and the vehicle body beam to realize the connection between the side support frame of the battery swap tray and the vehicle body beam.

[0042] Preferably, the battery swap tray includes a battery installation area and a vehicle-end electrical connector. The vehicle-end electrical connector is arranged on one side of the battery swap tray, and an electrical connector is provided inside the vehicle-end electrical connector.

[0043] In this solution, a vehicle-end electrical connector is provided on the side of the battery installation area, and the battery is installed in the battery installation area to avoid interference between the battery and the vehicle-end electrical connector.

[0044] Preferably, the battery swap tray is also provided with a vehicle-end liquid cooling connector, and the vehicle-end liquid cooling connector and the vehicle-end electrical connector are arranged on the same side of the battery swap tray.

[0045] In this solution, a vehicle-end liquid cooling connector is provided on the side of the battery installation area, and the battery is installed in the battery installation area to avoid interference between the battery and the vehicle-end liquid cooling connector.

[0046] An electric vehicle comprises a vehicle body frame, the above-mentioned battery exchange tray and a battery pack, wherein the battery pack can be detachably mounted on the battery exchange tray.

[0047] Preferably, the battery exchange tray is located at the bottom of the vehicle body beam and / or the side of the vehicle body beam.

[0048] Preferably, the battery pack is located below the vehicle body beam.

[0049] In this solution, by placing the battery pack under the vehicle body beam, the battery pack can lower the center of gravity of the vehicle body and make the vehicle run more smoothly.

[0050] Preferably, the battery pack is provided with a lock connection structure that cooperates with the locking structure on the battery exchange tray.

[0051] Preferably, the lock connection structure is distributed around the periphery and / or the top of the battery pack.

[0052] In this solution, a locking connection structure is provided on the periphery and / or top of the battery pack to increase the number of connection points between the battery pack and the battery swap tray, so that the load of the battery pack is evenly applied to the battery swap tray, avoiding excessive stress at individual points on the battery swap tray.

[0053] Preferably, the locking structure comprises a lock base, the lock base has an opening extending in a vertical direction, a first threaded portion or a limiting portion is provided in the opening, and the lock connection structure has a matching second threaded portion or a stop portion.

[0054] In this solution, by providing a first threaded portion or a limiting portion in the lock base and by providing a second threaded portion or a stop portion in the lock connection structure, the lock base and the lock connection structure can be quickly connected or disassembled, thereby achieving rapid installation or disassembly of the battery pack and the battery swap tray.

[0055] Preferably, the locking structure includes a lock base, the lock base has an opening groove extending in the vertical direction and a locking groove extending in the horizontal direction, the lock connection structure is a locking shaft, the locking groove is used for the locking shaft to be inserted and locked, the top of the opening groove is connected to the locking groove, and the locking shaft enters the locking groove when it reaches the intersection of the opening groove and the locking groove from the bottom of the opening groove in the vertical direction.

[0056] In this solution, by providing an opening groove and a locking groove, the locking shaft enters the locking groove along the opening groove, thereby achieving a stable connection between the locking shaft and the locking groove.

[0057] Preferably, at least a portion of the lock base is provided with a lock tongue, and the lock tongue is movably mounted in the locking groove and can prevent the lock shaft from escaping from the locking groove.

[0058] In this solution, a lock tongue is provided to prevent the lock shaft from escaping from the locking groove, thereby ensuring that the lock shaft will not escape from the locking groove due to vibration or the like, thereby ensuring stable locking.

[0059] Preferably, the locking structure further comprises a lock link, and the lock link is movably connected to the lock base via the lock tongue.

[0060] In this solution, a lock link is provided to drive multiple lock tongues to work in conjunction, so that multiple lock bases can be locked or unlocked at the same time, so that multiple lock shafts on the battery pack can be locked or unlocked with multiple lock bases at the same time, thereby improving the efficiency of locking and unlocking multiple lock shafts and lock bases.

[0061] Preferably, a battery-end electrical connector is provided at the front end of the battery pack, and a vehicle-end electrical connector is provided at the front end of the battery exchange tray, and the battery-end electrical connector is vertically connected to the vehicle-end electrical connector.

[0062] In this solution, a battery-end electrical connector is set at the front end of the battery pack, and a vehicle-end electrical connector is set at the front end of the battery swap tray. The vehicle-end electrical connector and the battery-end electrical connector cooperate to achieve the connection between the vehicle and the battery pack.

[0063] Preferably, a battery-end liquid cooling connector is also provided at the front end of the battery pack, and a vehicle-end liquid cooling connector is also provided at the front end of the battery swap tray, and the battery-end liquid cooling connector is vertically connected to the vehicle-end liquid cooling connector.

[0064] In this solution, by providing a vehicle-side liquid cooling connector and a battery-side liquid cooling connector, the coolant transmission between the vehicle and the battery is achieved to ensure the internal temperature control of the battery pack.

[0065] The positive and progressive effects of the present invention are:

[0066] The battery swap tray and electric vehicle of the present application are used for installing the battery pack by arranging the battery swap tray, and the battery pack is easy to install. The battery swap tray is arranged at the bottom of the vehicle body beam, so that the battery pack is installed at the bottom of the vehicle body beam. The battery pack arranged at the bottom of the vehicle body beam can lower the overall center of gravity height of the electric vehicle and improve the stability of the operation of the electric vehicle. By arranging a detachable connection of a lock connection structure and a locking structure, the battery pack and the battery swap tray can be quickly disassembled or connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Figure 1 This is a schematic diagram of the assembly of the battery swap tray and battery pack of Example 1 of the present application.

[0068] Figure 2 This is a schematic diagram of the battery swap tray of embodiment 1 of the present application.

[0069] Figure 3 This is a schematic diagram of an electric vehicle according to Embodiment 1 of the present application.

[0070] Figure 4 This is a cross-sectional schematic diagram of the connection between the lock base and the lock connection structure of the first embodiment of the present application.

[0071] Figure 5 It is a cross-sectional schematic diagram of the connection between the lock base and the lock connection structure of the second embodiment of the present application.

[0072] Figure 6 This is a schematic diagram of the structure of the lock base of Example 3 of the present application.

[0073] Figure 7 This is a schematic structural diagram of the assembly of the lock connecting rod and the lock base of the third embodiment of the present application.

[0074] Description of reference numerals:

[0075] Battery exchange tray 100

[0076] Locking structure 110

[0077] Lock base 111

[0078] The first threaded portion 112

[0079] Limiting part 113

[0080] Opening slot 114

[0081] Locking groove 115

[0082] Lock tongue 116

[0083] Lock link 117

[0084] Tray body 120

[0085] Beam 121

[0086] Stringer 122

[0087] Reinforcement rod 123

[0088] Connecting mounting 130

[0089] Side support frame 140

[0090] Vehicle-side electrical connector 150

[0091] Vehicle end liquid cooling connector 160

[0092] Body beam 200

[0093] Battery Pack 300

[0094] Lock connection structure 310

[0095] Battery terminal liquid cooling connector 320

[0096] Battery terminal electrical connector 330

[0097] Second thread portion 311

[0098] Stopper 312

[0099] Electric Vehicles 400 DETAILED DESCRIPTION

[0100] The present invention is further described below by way of examples, but the present invention is not limited to the scope of the examples.

[0101] Example 1

[0102] like Figure 1 and Figure 2 As shown, the present application provides a battery exchange tray 100 for an electric vehicle, and the battery exchange tray 100 is used to fix and install a battery pack 300. The electric vehicle 400 includes a body beam 200, and the battery exchange tray 100 is fixedly arranged on the body beam 200. The battery pack 300 is fixedly installed on the body beam 200 through the battery exchange tray 100. Since the body beam 200 is the place with the highest structural strength on the vehicle body, the battery pack 300 is installed on the body beam 200 to make the connection between the battery pack 300 and the vehicle body more stable. In this embodiment, at least part of the battery exchange tray 100 is located on the side of the body beam 200, and a part of the battery exchange tray 100 is located at the bottom of the body beam 200. A plurality of locking structures 110 are provided at the bottom of the battery exchange tray 100, and the locking structure 110 is used to cooperate with the lock connection structure 310 on the battery pack 300 to detachably connect the battery pack 300 to the bottom of the body beam 200 in the vertical direction. A locking structure 110 is provided on the battery swap tray 100. The locking structure 110 has an opening, and the opening of the locking structure 110 is arranged vertically downward. A lock connection structure 310 is provided on the battery pack 300, and the lock connection structure 310 is arranged vertically upward. When the battery pack 300 is installed, it is transported by the battery swap robot to the bottom of the battery swap tray 100. After being positioned in the horizontal direction, the battery pack 300 is lifted in the vertical direction. The lock connection structure 310 contacts the locking structure 110, and the lock connection structure 310 and the locking structure 110 are locked by operating the lock connection structure 310 to realize the locking connection between the battery pack 300 and the power swap tray 100.

[0103] In this embodiment, a battery swap tray 100 is provided for installing a battery pack 300. The battery pack 300 is installed at the bottom of the battery swap tray 100, so that the battery pack 300 is easy to install. The battery swap tray 100 is provided at the bottom of the vehicle body beam 200, so that the battery pack 300 is installed at the bottom of the vehicle body beam 200. The battery pack 300 provided at the bottom of the vehicle body beam 200 can lower the overall center of gravity height of the truck and improve the stability of the truck operation. By providing a lock connection structure 310 on the battery pack 300 and a locking structure 110 on the battery swap tray 100, the battery pack 300 and the battery swap tray 100 can be disassembled or connected.

[0104] In other embodiments, the battery exchange tray 100 can be located as a whole on the side of the vehicle body beam 200, or the battery exchange tray 100 can be located as a whole at the bottom of the vehicle body beam 200. The locking structure 110 is distributed around the periphery and middle area of ​​the battery exchange tray 100. The locking structure 110 is set around the periphery and middle area of ​​the battery exchange tray 100 to increase the connection points between the battery pack 300 and the battery exchange tray 100, so that the load of the battery pack 300 is evenly carried at various places of the battery exchange tray 100, thereby improving the stability of the battery exchange tray 100 in carrying the battery pack 300. Since the battery pack 300 is heavy, if the locking structure 110 is only provided on the periphery of the battery exchange tray 100, the battery pack 300 is connected through the structure provided around the battery exchange tray 100, and the load of the battery pack 300 is completely borne by the periphery of the battery exchange tray 100. In the case where the plane area of ​​the battery pack 300 is large and the weight load is large, the middle position of the battery pack 300 may be deformed greatly. In the long run, the battery pack 300 may be deformed, which affects the safety of the battery pack 300. The locking structure 110 is provided on the periphery and the middle area of ​​the battery exchange tray 100 to achieve uniform application of the load of the battery pack 300 to the battery exchange tray 100 and reduce the bending deformation of the battery pack 300 in the vertical direction.

[0105] In this embodiment, the battery exchange tray 100 includes a tray body 120, and the downward side of the tray body 120 is provided with a mounting surface for mounting the battery pack 300. The tray body 120 is an integral structure. The side of the tray body 120 opposite to the mounting surface is provided with a structure connected to the vehicle body beam 200. The tray body 120 is fixedly connected to the bottom of the vehicle body beam 200 and the side wall of the vehicle body beam 200.

[0106] In other embodiments, there are two tray bodies 120, and the battery exchange tray 100 includes two tray bodies 120, and the two tray bodies 120 are respectively fixedly connected to the opposite sides of the vehicle body beam 200. The two tray bodies 120 are separately installed on the vehicle body beam 200, and the planes of the two tray bodies 120 used to install the battery pack 300 are in the same plane. The battery pack 300 is connected to the two tray bodies 120 respectively, and the load of the battery pack 300 is respectively borne by the two tray bodies 120, and the load of the battery pack 300 is respectively transmitted to the two sides of the vehicle body beam 200 through the two tray bodies 120.

[0107] In other embodiments, the tray body 120 may also be completely installed at the bottom of the vehicle body beam 200 . Alternatively, in other embodiments, the tray body 120 is completely installed at the side wall of the vehicle body beam 200 .

[0108] A connecting and mounting member 130 is provided at the bottom of the tray body 120. The connecting and mounting member 130 is in the shape of a long strip, and the interior of the connecting and mounting member 130 is hollow. The two opposite sides of the connecting and mounting member 130 are used to connect with the tray body 120 and the locking structure 110 respectively. The upper end of the connecting and mounting member 130 is mounted on the tray body 120 by fasteners or other means. The locking structure 110 is provided on the connecting and mounting member 130. A lock base 111 is installed at the bottom of the connecting and mounting member 130. The lock base 111 is used to cooperate with the lock connection structure 310 of the battery pack 300 to fix the battery pack 300.

[0109] The pallet body 120 includes a plurality of cross beams 121 and a plurality of longitudinal beams 122. The pallet body 120 is square in shape. The square pallet body 120 is composed of a plurality of cross beams 121 and longitudinal beams 122 interwoven to form a frame. The longitudinal beams 122 and the cross beams 121 are interlaced and connected to each other. The longitudinal beams 122 extend in the same direction as the vehicle body beam 200, and the cross beams 121 and the longitudinal beams 122 are arranged vertically. In this embodiment, at least part of the locking structure 110 is distributed on the longitudinal beam 122 and the cross beam 121 at the end of the tray body 120, and part of the locking structure 110 is set on the longitudinal beam 122 and the cross beam 121 in the middle of the tray body 120. When the battery pack 300 is connected to the tray body 120, the edge of the battery pack 300 and the longitudinal beam 122 and the cross beam 121 at the end of the tray body 120 are aligned in the vertical direction, and the locking structure 110 is set on the longitudinal beam 122 and the cross beam 121 at the end, so that the lock connection structure 310 at the edge of the battery pack 300 cooperates with the locking structure 110 at the end, ensuring that the end of the battery pack 300 is also connected to the tray body 120, avoiding the end of the battery pack 300 from being suspended in the air to form a cantilever beam structure.

[0110] In other embodiments, the locking structure 110 may also be disposed only on the cross beam 121 and the longitudinal beam 122 at the ends of the tray body 120 .

[0111] The tray body 120 also includes a reinforcing rod 123, which connects a plurality of longitudinal beams 122. The two ends of the reinforcing rod 123 are respectively welded to the longitudinal beams 122, and the reinforcing rod 123 is arranged parallel to the cross beam 121. Thus, the reinforcing rod 123 can improve the strength of the longitudinal beams 122 and the connection strength between the two longitudinal beams 122, thereby avoiding cracks in the tray body 120 due to the longitudinal beams 122 being insufficiently strong to carry the battery pack 300.

[0112] The two ends of the reinforcing rod 123 are respectively connected to the longitudinal beam 122, and a locking structure 110 is provided on the reinforcing rod 123. A locking seat is provided on the reinforcing rod 123 to increase the connection points between the battery pack 300 and the battery exchange tray 100, so that the load of the battery pack 300 is applied to the tray body 120 as evenly as possible through the reinforcing rod 123, the longitudinal beam 122 and the cross beam 121, avoiding stress concentration caused by excessive load at a certain point on the tray body 120.

[0113] The height of the locking structure 110 on the reinforcing rod 123 is greater than the height of the locking structure 110 on the longitudinal beam 122 and / or the cross beam 121. The bottom of the longitudinal beam 122 and the cross beam 121 is provided with a connecting mounting member 130, and the bottom of the reinforcing rod 123 is directly mounted with the locking structure 110. However, the upper surface of the battery pack 300 is a plane, and the locking connection structure 310 at each point on the battery pack 300 needs to be connected to the reinforcing rod 123 and the locking structure 110 on the longitudinal beam 122 and the cross beam 121 respectively. Therefore, the length of the locking connection structure 310 connected to the locking structure 110 on the reinforcing rod 123 is longer than the locking connection structure 310 connected to the locking structure 110 on the longitudinal beam 122 or the cross beam 121.

[0114] The battery swap tray 100 is provided with mounting holes. The mounting holes are used to install connectors. The bottom and side walls of the vehicle body beam 200 are respectively provided with mounting holes corresponding to the connectors, and the connectors pass through the mounting holes on the battery swap tray 100 and the vehicle body beam 200 to achieve the connection between the battery swap tray 100 and the vehicle body beam 200. In this embodiment, the battery swap tray 100 is fixedly connected to the bottom of the vehicle body beam 200 and the side walls of the vehicle body beam 200 through connectors, that is, connectors are provided between the bottom and side walls of the battery swap tray 100 and the vehicle body beam 200, thereby increasing the number of connection points between the battery swap tray 100 and the vehicle body beam 200 in the case of the existing battery swap tray 100 and the vehicle body beam 200. In this embodiment, the connector is a bolt.

[0115] In other embodiments, the battery exchange tray 100 may also be installed only at the bottom of the vehicle body beam 200. Or in other embodiments, the battery exchange tray 100 may also be installed only at the side wall of the vehicle body beam 200.

[0116] The connecting piece is arranged at the top of the battery swap tray 100. The connecting pieces at the top of the battery swap tray 100 are opposite to each other. A connecting hole for the connecting piece to pass through is provided at the bottom of the vehicle body beam 200. The battery swap tray 100 is fixedly connected to the bottom of the vehicle body beam 200 through the connecting piece.

[0117] The connecting parts are also arranged on the reinforcing rod 123, and the connecting parts are also arranged on the reinforcing rod 123 of the power swap tray 100. The power swap tray 100 is connected to the vehicle body frame 200 through the connecting parts on the reinforcing rod 123. With such arrangement, the number of connection points between the power swap tray 100 and the vehicle body frame 200 makes the load transfer between the power swap tray 100 and the vehicle body frame 200 more uniform, thereby avoiding the occurrence of stress concentration caused by excessive load on the power swap tray 100 or the vehicle body frame 200.

[0118] The battery exchange tray 100 includes a plurality of side support frames 140. The bottom of the side support frame 140 is fixedly connected to the tray body 120, one end of the side support frame 140 is fixedly connected to the tray body 120, and the other end of the side support frame 140 extends from the tray body 120 to a direction away from the tray body 120. In this embodiment, the side support frame 140 is arranged perpendicular to the surface of the tray body 120. The tray body 120 is connected to the vehicle body beam 200 through the side support frame 140, and the side support frame 140 is used to connect to the side wall of the vehicle body beam 200. Mounting holes are also provided on the side support frame 140, and mounting holes are also provided at corresponding locations on the side walls of the vehicle body beam 200. The side support frame 140 and the vehicle body beam 200 are connected by connecting members passing through corresponding mounting holes on the two.

[0119] The tray body 120 is located below the vehicle body beam 200. The battery pack 300 is arranged below the tray body 120. When the tray body 120 is installed below the vehicle body beam 200, the battery pack 300 is also located below the vehicle body beam 200. The tray body 120 is arranged at the bottom of the vehicle body beam 200, so that the battery pack 300 is installed at the bottom of the vehicle body beam 200. Since the actual battery pack 300 is relatively heavy, especially when used in commercial vehicles such as trucks, in order to ensure the vehicle's cruising range, the weight of the battery pack 300 usually reaches more than one ton. In this case, if the battery pack 300 is arranged above the vehicle body beam 200, the overall center of gravity of the vehicle is increased, resulting in unstable vehicle operation. The battery pack 300 arranged at the bottom of the vehicle body beam 200 can reduce the overall center of gravity height of the electric vehicle 400 and improve the stability of the operation of the electric vehicle 400.

[0120] The side support frame 140 extends from the tray body 120 in a direction away from the tray body 120. When installed, the side support frame 140 is installed close to the side wall of the vehicle body beam 200. The connecting piece is arranged at one end of the side support frame 140 facing the vehicle body beam 200. The vehicle body beam 200 is provided with a mounting hole relative to the side support frame 140. The connecting piece passes through the mounting holes on the side support frame 140 and the vehicle body beam 200 respectively to fix the side support frame 140 and the vehicle body beam 200. The battery swap tray 100 is fixedly connected to the side wall of the vehicle body beam 200 through the connecting piece.

[0121] Under the premise of ensuring that the strength of the vehicle body beam 200 is sufficient, in order to reduce the weight, the vehicle body beam 200 includes two beams arranged side by side and extending in the longitudinal direction. A number of side support frames 140 are respectively fixedly connected to the opposite side walls of the two beams, and the tray body 120 is respectively provided with two groups of side support frames 140, one group of side support frames 140 is used to connect with a beam, and one group of side support frames 140 is arranged along the axial direction of the beam. The two groups of side support frames 140 are symmetrically arranged with respect to the center planes of the two beams, one group of side support frames 140 is installed on the side wall of one beam, and the other group of side support frames 140 is installed on the side wall of the other beam. The two groups of side support frames 140 are symmetrically arranged and symmetrically stressed, thereby improving the stability of the connection between the battery swap tray 100 and the vehicle body beam 200.

[0122] The battery swap tray 100 includes a battery installation area and a vehicle-end electrical connector 150. The vehicle-end electrical connector 150 is used to cooperate with the battery-end electrical connector 330 on the battery pack 300, and the electrical energy in the battery pack 300 is transmitted to the vehicle through the vehicle-end electrical connector 150. The vehicle-end electrical connector 150 is arranged on one side of the battery swap tray 100. Since the battery pack 300 and the battery swap tray 100 in this embodiment move in the vertical direction during assembly and disassembly, the vehicle-end electrical connector 150 is arranged on one side of the battery swap tray 100 in the horizontal direction, which can avoid interference between the vehicle-end electrical connector 150 and the battery pack 300. An electrical connector is provided in the vehicle-end electrical connector 150, and the vehicle-end electrical connector 150 and the battery pack 300 electrical connector on one side of the battery pack 300 are docked to achieve electrical energy transmission.

[0123] The battery exchange tray 100 is also provided with a vehicle-end liquid cooling connector 160, which is arranged on the same side of the battery exchange tray 100 as the vehicle-end electrical connector 150. A liquid medium passage is provided in the vehicle-end liquid cooling connector 160 for the circulation of the liquid medium between the vehicle and the battery pack 300. The vehicle-end liquid cooling connector 160 and the vehicle-end electrical connector 150 are arranged side by side on one side of the battery exchange tray 100, and are arranged on the side of the battery exchange tray 100 close to the cab, so that the driver can check the connection status of the vehicle-end liquid cooling connector 160 and the vehicle-end electrical connector 150. Both the vehicle-end liquid cooling connector 160 and the vehicle-end electrical connector 150 are arranged on the side of the battery exchange tray 100, so that when the battery pack 300 is replaced on the battery exchange tray 100, since the battery pack 300 is installed in the vertical direction, the battery pack 300 will not interfere with the vehicle-end liquid cooling connector 160 and the vehicle-end electrical connector 150 during the installation process.

[0124] like Figure 3As shown, the present embodiment also provides an electric vehicle 400, which is a commercial vehicle such as a heavy truck or a light truck. The electric vehicle 400 includes a body beam 200, a battery exchange tray 100 and a battery pack 300, and the battery pack 300 is detachably mounted on the battery exchange tray 100. The battery pack 300 is used to provide power for the electric vehicle 400, and the battery pack 300 drives the electric vehicle 400 to move by driving the motor on the electric vehicle 400 to rotate. When the energy in the battery pack 300 is exhausted, the electric vehicle 400 is driven into the battery exchange station, and the battery exchange robot installed in the battery exchange station removes the battery pack 300 at the bottom of the electric vehicle 400 and installs the fully charged battery pack 300 in the battery exchange station. Thereby, the battery exchange of the truck is realized.

[0125] In this embodiment, the battery swap tray 100 is located at the bottom and side of the vehicle body beam 200 .

[0126] In other embodiments, the battery exchange tray 100 may also be simply set at the bottom of the vehicle body beam 200. Or in other embodiments, the battery exchange tray 100 may also be simply set at the side wall of the vehicle body beam 200, and when the battery exchange tray 100 is set at the side wall of the vehicle body beam 200, the battery pack 300 is still connected to the bottom of the battery exchange tray 100, and in this case, the battery pack 300 is set at the bottom of the battery exchange tray 100. In this way, the battery pack 300 is set at the bottom of the vehicle body beam 200, and the battery exchange tray 100 is set at the side wall of the vehicle body beam 200, so that the connection structure between the battery pack 300 and the vehicle body beam 200 is more compact. There is no battery exchange tray 100 between the battery pack 300 and the vehicle body beam 200 in the vertical direction. When the thickness of the battery pack 300 remains unchanged, the ground clearance of the bottom of the battery pack 300 can be increased, thereby improving the vehicle's passability.

[0127] The battery pack 300 is provided with a lock connection structure 310 that cooperates with the locking structure 110 on the battery exchange tray 100. In this embodiment, Figure 4 As shown, the lock connection structure 310 is T-shaped, and the locking structure 110 includes a lock base 111, and the lock base 111 has an opening extending in the vertical direction, and a limiting portion 113 is provided in the opening, and the lock connection structure 310 has a matching stopper 312. The lock connection structure 310 moves from bottom to top, and after the stopper 312 enters the limiting portion 113, the lock connection structure 310 is rotated to achieve the limiting connection between the stopper 312 and the limiting portion 113, and the lock base 111 and the lock connection structure 310 are locked.

[0128] By setting corresponding locking structures on the lock connection structure 310 and the lock base 111. The lock connection structure 310 extends into the lock base 111 along the opening direction of the lock base 111, and the lock connection structure 310 is rotated to achieve the locking connection between the lock connection structure 310 and the lock base 111, and finally the locking connection between the battery pack 300 and the battery exchange tray 100 is achieved.

[0129] In this embodiment, the lock connection structure 310 is distributed on the periphery and top of the battery pack 300. On the connecting surfaces relative to the battery pack 300 and the power exchange tray 100, the lock connection structure 310 is provided on the top of the periphery of the connecting surface. When the battery pack 300 and the power exchange tray 100 are connected, the load of the battery pack 300 is transmitted to the power exchange tray 100 through the lock connection structure 310 at various locations. The lock base 111 on the power exchange tray 100 is connected to the lock connection structure 310 to achieve the locking of the power exchange tray 100 and the battery pack 300, thereby achieving the load of the battery pack 300 being dispersed and transmitted to the power exchange tray 100, avoiding the stress concentration caused by excessive load at a certain place of the power exchange tray 100. At the same time, the lock connection structure 310 is provided at various locations of the battery pack 300, and the battery pack 300 can also evenly bear the tensile load of the power exchange tray 100, avoiding the deformation of the battery pack 300 due to excessive weight load at a certain place on the battery pack 300.

[0130] In other embodiments, the lock connection structure 310 may also be provided only on the periphery of the battery pack 300. Alternatively, in other embodiments, the lock connection structure 310 may be provided only on the top of the battery pack 300. A battery-end electrical connector 330 is provided at the front end of the battery pack 300, and the battery-end electrical connector 330 is used to connect to the vehicle-end electrical connector 150 on the vehicle to transmit the electrical energy in the battery pack 300 to the vehicle to drive the vehicle to move. The battery-end electrical connector 330 is provided at the front end of the battery pack 300, and the vehicle-end electrical connector 150 is provided at the front end of the battery exchange tray 100, and the battery-end electrical connector 330 is vertically connected to the vehicle-end electrical connector 150. When the battery pack 300 is installed on the battery exchange tray 100 from bottom to top, the battery-end electrical connector 330 is connected to the vehicle-end electrical connector 150 from bottom to top, so that the battery-end electrical connector 330 is connected to the vehicle-end electrical connector 150 to realize the transmission of electrical energy.

[0131] The front end of the battery pack 300 is also provided with a battery end liquid cooling connector 320, which is used to connect to the vehicle end liquid cooling connector 160 on the vehicle. When the battery pack 300 is working, a liquid medium is needed to maintain the battery pack 300 at a suitable working temperature to prevent the battery pack 300 from being too high or too low in temperature. If the battery pack 300 is too high or too low in temperature, the discharge efficiency of the battery pack 300 will be reduced, thereby affecting the operation of the vehicle. The temperature of the battery pack 300 is maintained by setting a liquid medium. The battery end liquid cooling connector 320 is provided at the front end of the battery pack 300, and the battery end liquid cooling connector 320 is provided on the side of the battery end electrical connector 330. The battery-end liquid cooling connector 320 is vertically connected to the vehicle-end liquid cooling connector 160. When the battery pack 300 is installed on the battery swap tray 100 from bottom to top, the battery-end liquid cooling connector 320 is connected to the vehicle-end liquid cooling connector 160 from bottom to top, thereby realizing the connection between the battery-end liquid cooling connector 320 and the vehicle-end liquid cooling connector 160 and realizing the connection of the liquid medium passage.

[0132] Example 2

[0133] The difference between the second embodiment and the first embodiment lies in the locking structure, and the same parts will not be repeated, and only the different parts will be described.

[0134] like Figure 5 As shown, in this embodiment, the locking structure 110 includes a lock base 111, the lock base 111 has an opening extending in the vertical direction, a first threaded portion 112 is provided in the opening, and the lock connection structure 310 has a matching second threaded portion 311. The lock connection structure 310 moves from bottom to top, and when the lock connection structure 310 is connected to the opening of the lock base 111, the lock connection structure 310 is rotated to achieve the matching connection of the first threaded portion 112 and the second threaded portion 311, and the lock base 111 and the lock connection structure 310 are locked.

[0135] Example 3

[0136] The difference between the present embodiment 3 and the embodiment 1 lies in the locking structure, and the same parts will not be repeated, and only the different parts will be described.

[0137] like Figure 6As shown, the locking structure 110 includes a lock base 111, and the lock base 111 is a shell with a hollow interior, and the lock base 111 is fixedly mounted on the battery exchange tray 100. In the present embodiment, the lock base 111 is provided with an opening for the lock connection structure 310 to enter, and the opening is arranged downward. In the present embodiment, the opening on the lock base 111 is arranged downward in the vertical direction, so that when the battery pack 300 is installed upward in the vertical direction, the lock connection structure 310 of the battery pack 300 can be smoothly extended into the opening. The opening is arranged downward, and after the battery pack 300 is transported to the bottom of the battery exchange tray 100, it can be moved upward in the vertical direction after being positioned in the horizontal direction to cooperate with the lock base 111, so that the lock base 111 and the lock connection structure 310 of the battery pack 300 can cooperate more conveniently.

[0138] The locking structure 110 includes a lock base 111, and the lock base 111 includes an opening slot 114 extending in the vertical direction and a locking slot 115 extending in the horizontal direction. The locking slot 115 penetrates the lock base 111 along the thickness direction of the lock base 111. The opening slot 114 extends upward from the bottom of the lock base 111, and the top of the opening slot 114 is connected to the locking slot 115. The lock connection structure 310 is a lock shaft, which is arranged on the battery pack 300 through a bracket and the two ends of the lock shaft are fixed to the bracket. The opening slot 114 is used for the lock shaft on the battery pack 300 to enter the lock base 111, and the locking slot 115 is used for the lock shaft to be inserted and locked. The battery pack 300 moves up and down in the vertical direction to move closer to or away from the lock base 111 on the vehicle body. When the battery pack 300 is installed on the vehicle body, the lock shaft on the battery pack 300 first enters the lock base 111 in the vertical direction, and enters the locking groove 115 when the lock shaft reaches the intersection of the opening groove 114 and the locking groove 115 from the bottom of the opening groove 114 in the vertical direction. After the battery pack 300 is moved to the position in the vertical direction, the battery pack 300 is moved in the horizontal direction to move the lock shaft along the locking groove 115. Since the locking groove 115 is arranged horizontally, the lock shaft can be hung on the locking groove 115 to lock the lock shaft in the vertical direction, thereby fixing the battery pack 300. The penetrating locking groove 115 allows the lock shaft to pass through the locking groove 115 along the thickness direction of the lock base 111 and hang in the locking groove 115. In this way, even if the locking groove 115 is worn due to long-term use or the vehicle vibrates during driving, the lock shaft will not fall off from the locking groove 115. The penetrating locking groove 115 ensures a reliable connection between the lock shaft and the locking groove 115 , thereby ensuring a reliable connection between the battery pack and the lock base 111 , thereby preventing the battery pack from accidentally falling off.

[0139] At least part of the lock base 111 is also provided with a lock tongue 116. A plurality of lock bases 111 are installed on the power exchange tray 100, some of which are provided with a lock tongue 116, and some of which are not provided with a lock tongue 116. The lock base 111 provided with a lock tongue 116 is used to lock the lock shaft in the horizontal direction to prevent the lock shaft from sliding out of the locking groove 115, and the lock base 111 without a lock tongue 116 is used to carry the lock shaft in the vertical direction and not lock the lock shaft in the horizontal direction. The lock tongue 116 is movably installed in the locking groove 115 and can prevent the lock shaft from escaping from the locking groove 115. The lock tongue 116 is a long rod-shaped part, and a blocking portion is provided at the bottom end of the lock tongue 116, which is used to block the lock shaft from leaving the locking groove 115, and a round hole is provided at the top of the lock tongue 116 for connecting with the lock link 117. The locking tongue 116 is used to control the connection between the opening groove 114 and the locking groove 115. When the locking tongue 116 separates the opening groove 114 and the locking groove 115, the lock shaft cannot move between the opening groove 114 and the locking groove 115; when the locking tongue 116 does not separate the opening groove 114 and the locking groove 115, the lock shaft can enter the locking groove 115 from the outside of the lock base 111 through the opening groove 114, or move from the locking groove 115 through the opening groove 114 to the outside of the lock base 111.

[0140] like Figure 7 As shown, the locking structure 110 further includes a lock link 117. The lock link 117 is disposed above the lock base 111 and is movably connected to the lock tongue 116. The lock link 117 is movably connected to the lock base 111 through the lock tongue 116. The connection between the lock link 117 and the lock tongue 116 is connected by a rotating shaft, and the rotating shaft passes through the round hole at the top of the lock tongue 116 and is connected to the lock link 117. In this way, the lock tongue 116 can be controlled to move in the lock base 111 by only driving the lock link 117 to move. In this embodiment, one lock link 117 can be connected to three lock tongues 116, thereby driving the three lock tongues 116 to rotate in the three lock bases 111 at the same time, thereby improving the unlocking efficiency and ensuring the synchronization of unlocking.

[0141] By adopting the technical solution in the above embodiment, the height space under the vehicle body beam is fully utilized. When the battery swapping equipment disassembles the battery pack, the unloaded battery swapping equipment can directly enter the space below the battery pack without interfering with the bottom of the electric vehicle; when the battery swapping equipment installs the battery pack, the battery swapping equipment carrying the battery pack can also directly enter the bottom of the vehicle body beam for battery swapping without interfering with the bottom of the electric vehicle. During the whole process, there is no need to lift the vehicle body, set up a sunken space or dig a pit for the battery swapping equipment to enter and exit, which reduces the cost, time and difficulty of building a battery swapping station, reduces the requirements for the site of the station, and improves the efficiency of battery swapping.

[0142] Although the specific embodiments of the present invention are described above, it should be understood by those skilled in the art that this is only for illustration and the protection 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, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A battery exchange tray for an electric vehicle, the vehicle comprising a vehicle body beam, characterized in that: The battery exchange tray is used to install the battery pack. The battery exchange tray is fixedly arranged on the vehicle body beam. At least part of the battery exchange tray is located on the side of the vehicle body beam. A plurality of locking structures are provided at the bottom of the battery exchange tray. The locking structures are used to cooperate with the lock connection structures on the battery pack to detachably connect the battery pack to the bottom of the vehicle body beam in the vertical direction. The battery exchange tray includes a tray body, the battery exchange tray includes a plurality of side support frames, the bottom of the side support frames is fixedly connected to the tray body, and the tray body is connected to the vehicle body beam through the side support frames; The tray body is located below the vehicle body beam; The vehicle body beam comprises two beams arranged side by side and extending in the longitudinal direction, and a plurality of side support frames are respectively fixedly connected to the side walls of the two beams which are opposite to each other.

2. The battery replacement tray for electric vehicles according to claim 1, characterized in that: The locking structure comprises a lock base, the lock base is provided with an opening for the lock connection structure to enter, and the opening is arranged downward; And / or, the locking structure is distributed in the periphery and middle area of ​​the battery swap tray; And / or, the number of the tray body is one, and the tray body is fixedly connected to the bottom of the vehicle body beam and / or the side wall of the vehicle body beam; And / or, the number of the tray bodies is two, and the two tray bodies are respectively fixedly connected to opposite sides of the vehicle body beam; And / or, the connecting member is arranged at one end of the side support frame facing the vehicle body beam, and the battery exchange tray is fixedly connected to the side wall of the vehicle body beam through the connecting member; And / or, the battery swap tray includes a battery installation area and a vehicle-end electrical connector, the vehicle-end electrical connector is arranged on one side of the battery swap tray, and an electrical connector is provided in the vehicle-end electrical connector.

3. The battery replacement tray for electric vehicles according to claim 2, characterized in that: The battery exchange tray is also provided with a vehicle-end liquid cooling connector, and the vehicle-end liquid cooling connector and the vehicle-end electrical connector are arranged on the same side of the battery exchange tray; And / or, a connecting and mounting piece is provided at the bottom of the tray body, and the locking structure is provided on the connecting and mounting piece.

4. The battery replacement tray for electric vehicles according to claim 2, characterized in that: The pallet body comprises a plurality of cross beams and a plurality of longitudinal beams, wherein the longitudinal beams extend in the same direction as the vehicle body beam, and at least part of the locking structure is distributed on the longitudinal beams and / or the cross beams at the ends of the pallet body; Preferably, the pallet body further comprises a reinforcing rod, and the reinforcing rod connects a plurality of the longitudinal beams.

5. The battery replacement tray for electric vehicles according to claim 4, characterized in that: The reinforcing rod is arranged parallel to the crossbeam; And / or, the reinforcing rod is provided with the locking structure; And / or, the battery swap tray is provided with a mounting hole, the mounting hole is used to install a connecting piece, and the battery swap tray is fixedly connected to the bottom of the vehicle body beam and / or the side wall of the vehicle body beam through the connecting piece.

6. The battery replacement tray for electric vehicles according to claim 5, characterized in that: The height of the locking structure located on the reinforcing rod is greater than the height of the locking structure located on the longitudinal beam and / or the cross beam; And / or, the connecting member is arranged on the top of the battery swap tray, and the battery swap tray is fixedly connected to the bottom of the vehicle body beam through the connecting member; Preferably, the connecting member is arranged on the reinforcing rod.

7. An electric vehicle, characterized in that: The electric vehicle includes a body frame, a battery exchange tray for an electric vehicle as described in any one of claims 1 to 6, and a battery pack, and the battery pack can be detachably installed on the battery exchange tray.

8. The electric vehicle according to claim 7, characterized in that: The battery exchange tray is located at the bottom of the vehicle body beam and / or the side of the vehicle body beam; And / or, the battery pack is located below the vehicle body beam; And / or, the battery pack is provided with a lock connection structure that cooperates with the locking structure on the battery exchange tray; Preferably, the lock connection structure is distributed around the periphery and / or the top of the battery pack; And / or, a battery-end electrical connector is provided at the front end of the battery pack, and a vehicle-end electrical connector is provided at the front end of the battery exchange tray, and the battery-end electrical connector is vertically connected to the vehicle-end electrical connector.

9. The electric vehicle according to claim 8, characterized in that: The front end of the battery pack is also provided with a battery-end liquid cooling connector, and the front end of the battery exchange tray is also provided with a vehicle-end liquid cooling connector, and the battery-end liquid cooling connector is vertically connected to the vehicle-end liquid cooling connector; And / or, the locking structure includes a lock base, the lock base has an opening extending in a vertical direction, a first threaded portion or a limiting portion is provided in the opening, and the lock connection structure has a matching second threaded portion or a stop portion.

10. The electric vehicle according to claim 8, characterized in that: The locking structure comprises a lock base, the lock base has an opening slot extending in a vertical direction and a locking slot extending in a horizontal direction, the lock connection structure is a lock shaft, the locking slot is used for the lock shaft to be inserted and locked, the top of the opening slot is connected to the locking slot, and the lock shaft enters the locking slot when it reaches the intersection of the opening slot and the locking slot from the bottom of the opening slot in a vertical direction; Preferably, at least part of the lock base is provided with a lock tongue, which is movably mounted in the locking groove and can prevent the lock shaft from escaping from the locking groove; More preferably, the locking structure further comprises a locking link, and the locking link is movably connected to the lock base via the locking tongue.

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