Battery bottom support, battery system and vehicle

Abstract

The utility model discloses a battery bottom support, a battery system and a vehicle. The battery bottom support comprises a bottom support frame, a locking assembly and a plurality of guide bodies. The guiding bodies are perpendicularly connected to the bottom support frame, a guiding part is arranged on the sides, away from the bottom support frame, of the guiding bodies and provided with at least two guiding slopes, the guiding slopes are sequentially arranged in the circumferential direction of the guiding part, and the diameter of the cross section of the guiding part is gradually decreased in the direction from the bottom support frame to the guiding part. The locking assembly is arranged on the guiding body and / or the bottom support frame, at least part of the locking assembly is located in the guiding body, the locking assembly is provided with a spring bolt, and the spring bolt can stretch out of or retract into the guiding body. According to the battery bottom support, at least two guide slopes are arranged on each guide part and can be in guide fit with two vertical beam bodies on the battery frame respectively, so that the number of guide bodies arranged on the battery bottom support can be reduced, and the guide fit precision of the battery bottom support and the battery frame is improved.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and in particular to a battery base, battery system and vehicle. Background Technology

[0002] In related technologies, a battery support bracket is installed on the vehicle to support the battery box and to lock or unlock it. The battery box provides power to the vehicle. The battery box and battery support bracket are detachable, allowing for the replacement of the battery box with a new one using lifting equipment when the vehicle is low on power, thereby improving charging efficiency.

[0003] A battery base typically includes a base frame, guides, and locking components. Both the guides and locking components are mounted on the base frame. The guides are perpendicular to the base frame, and each guide typically has only one guide ramp. As the battery box falls onto the base frame along the direction perpendicular to it, the guide ramps engage with the corresponding beams at the bottom of the battery box, ensuring the battery box sits precisely on the base frame. Since each guide in the battery frame usually has only one guide ramp, each guide can only guide the battery in one direction at a given location. To achieve a good guiding effect, a large number of guides pointing in different directions are usually needed to work together effectively. For example, if a battery base is to be installed on a large vehicle, such as a mining truck, the battery base will be correspondingly large due to the truck's size. If each guide only has one guide ramp, the number of ramps will be limited, resulting in a mediocre overall guiding effect. To improve the guiding effect, more guides are needed, making the battery base structure complex and increasing its cost. Utility Model Content

[0004] To address one of the aforementioned technical problems, this disclosure provides a battery base, a battery system, and a vehicle.

[0005] The embodiments disclosed herein employ the following technical solutions:

[0006] The primary objective of this application is to provide a battery base, comprising:

[0007] Base frame;

[0008] Multiple guide bodies are provided, each of which is vertically connected to the base frame. A guide portion is provided on the side of the guide body away from the base frame. The guide portion has at least two guide ramps. Each guide ramp is arranged sequentially along the circumference of the guide portion. In the direction from the base frame to the guide portion, the cross-sectional diameter of the guide portion gradually decreases.

[0009] A locking assembly disposed on the guide body and / or the base frame, the locking assembly being at least partially located within the guide body, the locking assembly having a latch that can extend or retract from the guide body.

[0010] Optionally, a guide ramp is provided on one side of the guide body facing the long side of the base frame;

[0011] Another guide ramp is provided on one side of the guide body facing the width side of the base frame.

[0012] Optionally, after the guide portion is cross-sectioned in a plane parallel to the base frame, cross-section lines are formed on each guide surface;

[0013] In this case, the section lines on two adjacent guide surfaces are perpendicular.

[0014] Optionally, two adjacent guide ramps are connected and transitioned by an arc-shaped edge.

[0015] Optionally, the guide body includes a guide body and a housing;

[0016] The guide body is vertically connected to the base frame, and the guide body has a cavity and a first clearance opening communicating with the cavity;

[0017] The locking component is at least partially located within the cavity;

[0018] The outer shell is attached to the surface of the guide body, the outer shell has the guide body, the outer shell has a second clearance opening, and the second clearance opening is connected to the first clearance opening;

[0019] The locking tongue of the locking component can extend sequentially from the first clearance opening and the second clearance opening from the cavity, and the locking tongue of the locking component can retract into the cavity.

[0020] Optionally, the outer surface of the guide body is provided with an upper frame snap-fit ​​member;

[0021] Under the action of external force, the upper frame snap-fit ​​component can undergo elastic deformation, and when the external force is removed, the upper frame snap-fit ​​component can recover its deformation.

[0022] Optionally, the upper frame snap-fit ​​component is disposed on the outer wall of the guide body;

[0023] The outer casing has an avoidance notch on the side opposite to the guide body;

[0024] With the outer shell connected to the guide body, the upper frame snap-fit ​​is located in the clearance notch.

[0025] A second objective of this application is to provide a battery system comprising:

[0026] The aforementioned battery base;

[0027] A battery frame, the bottom of which includes multiple beams arranged in a crisscross pattern;

[0028] As the battery frame approaches the base support frame in a direction perpendicular to the base support frame, the guide ramps of the guide bodies on the battery base support cooperate with the corresponding beam guides on the battery frame to adjust the relative position of the battery frame and the base support frame.

[0029] Optionally, a locking block is provided on the beam;

[0030] When the locking assembly and the battery frame are locked in place, the bolt extends out of the guide and is positioned on the locking engagement block.

[0031] Optionally, the locking block includes a first block and a second block, wherein the first block is fixed to the beam.

[0032] The second block is detachably connected to the first block by fasteners;

[0033] When the locking assembly and the battery frame are locked together, the locking tongue is positioned on the second block.

[0034] The third objective of this application is to provide a vehicle comprising:

[0035] The vehicle body has a running gear;

[0036] The battery system described above has a battery base fixed to the vehicle body, a battery cell disposed within the battery frame, and the battery system is electrically connected to the walking mechanism.

[0037] By adopting the above technical solution, this application has the following beneficial effects:

[0038] The battery base of this application has at least two guide ramps on each guide section, which can respectively guide and cooperate with two beams perpendicular to the battery frame, thereby reducing the number of guide bodies to be arranged on the battery base and improving the guiding and cooperation accuracy between the battery base and the battery frame.

[0039] The specific embodiments of this application will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0040] The accompanying drawings, as part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application, but do not constitute an undue limitation of this application. Obviously, the drawings described below are merely some embodiments, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:

[0041] Figure 1 This is a schematic diagram of the battery system's mating structure provided in an embodiment of this application;

[0042] Figure 2 This is a schematic diagram of the structure of the battery base provided in an embodiment of this application;

[0043] Figure 3 A partial structural schematic diagram of the battery base provided in an embodiment of this application;

[0044] Figure 4 This is another partial structural schematic diagram of the battery base provided in an embodiment of this application;

[0045] Figure 5 This is a schematic diagram of the cooperative structure of the locking component, the transmission component, and the telescopic component in the battery base provided in the embodiment of this application.

[0046] Figure 6 This is a partial structural diagram of the battery frame of the battery system provided in an embodiment of this application.

[0047] In the diagram: 100, Battery base; 1, Base frame; 2, Guide body; 21, Guide body; 22, Outer shell; 221, Guide slope; 222, Arc-shaped edge; 223, Second clearance opening; 224, Clearance notch; 3, Locking assembly; 31, Seat; 32, Swinging component; 321, Main body; 322, Locking tongue; 4, Upper frame snap-fit ​​component; 5, Telescopic component; 6, Transmission component; 200, Battery frame; 210, Beam; 220, Locking block; 221, First block; 222, Second block; 223, Fastener.

[0048] It should be noted that these figures and descriptions are not intended to limit the scope of the concept of this application in any way, but rather to illustrate the concept of this application to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this application, but are not intended to limit the scope of this application.

[0050] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0051] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0052] See Figures 1 to 6 As shown, this embodiment of the present disclosure provides a battery base 100, including: a base frame 1, a locking assembly 3, and a plurality of guide bodies 2. Each guide body 2 is vertically connected to the base frame 1, and a guide portion is provided on the side of the guide body 2 facing away from the base frame 1, such as... Figure 4 As shown, the guide portion has at least two guide ramps 221, each of which is arranged sequentially along the circumference of the guide portion. In the direction from the base frame 1 to the guide portion, the cross-sectional diameter of the guide portion gradually decreases. The locking component 3 is disposed on the guide body 2 and / or the base frame 1. The locking component 3 is at least partially located within the guide body 2. The locking component 3 has a locking tongue 322, which can extend or retract from the guide body 2.

[0053] The battery base 100 of this application has at least two guide ramps 221 on each guide portion, which can respectively guide and cooperate with two beams 210 perpendicular to the battery frame 200, thereby reducing the number of beams arranged on the battery base 100 and improving the guiding and cooperation accuracy between the battery base and the battery frame 200.

[0054] In some possible implementations, one guide ramp 221 is provided on the side of the guide body 2 facing the length side of the base frame 1, and another guide ramp 221 is provided on the side of the guide body 2 facing the width side of the base frame 1. That is, two guide ramps are provided on one guide body 2.

[0055] The base frame 1 can be rectangular, with two length sides and two width sides. Each guide body 2 is arranged sequentially along the edge of the base frame 1. Each guide body 2 can be provided with two guide slopes 221, one guide slope 221 facing one length side and the other guide slope 221 facing one width side. The two guide slopes 221 can be guided and cooperated with the two beams 210 perpendicular to the battery frame 200, which has the function of improving the guiding accuracy.

[0056] In some possible implementations, the guide portion is cross-sectioned in a plane parallel to the base frame 1, forming cross-sections on each guide surface, with the cross-sections on adjacent guide surfaces being perpendicular. Two perpendicular beams 210 on the base frame 1 intersect to form an angle. The guide body 2, positioned corresponding to this angle, extends into the angle formed between the two beams 210 as the battery frame 200 falls from above. The two guide ramps 221 on the guide body 2 cooperate with the two beams 210, precisely guiding the battery frame 200 so that it ultimately sits precisely on the base frame 1.

[0057] Among them, such as Figure 1 As shown, a total of eight guide bodies 2 can be provided on the battery base 100. Four guide bodies 2 can be provided on each side of the battery base 100 along its length, and the four guide bodies 2 on the same side are located at the four vertices of a quadrilateral. Two long beams and several short beams can be provided at the bottom of the battery frame 200. The two long beams are spaced apart and parallel, and each short beam is positioned between the two long beams. The end beams are spaced apart along the length of the long beams. A rectangular frame is formed between the two short beams and the two long beams at one end of the bottom of the battery frame 200 along its length, and another rectangular frame is formed between the two end beams and the two long beams at the other end of the bottom of the battery frame 200 along its length. Each rectangular frame is guided and engaged with the four guide bodies 2 on the battery base 100. Each guide body 2 corresponds to a corner of the rectangular frame, and the two guide slopes 221 of each guide body 2 are respectively guided and engaged with the perpendicular short beams and long beams.

[0058] In some possible implementations, two adjacent guide ramps 221 are connected and transitioned by an arc-shaped edge 222. The two guide ramps 221 are directly connected without any other obstructing structures. The overall structure is simple. The two guide ramps 221 are located on the same structural component without any gaps or obstructing structures between them, which can achieve a good guiding and matching effect with the battery frame 200.

[0059] In some possible implementations, such as Figure 4As shown, the guide body 2 includes a guide body 21 and a housing 22. The guide body 21 is vertically connected to the base frame 1. The guide body 21 has a cavity and a first clearance opening communicating with the cavity. The locking component 3 is at least partially located in the cavity. The housing 22 is fitted to the surface of the guide body 21. The housing 22 has the guide body 2. The housing 22 has a second clearance opening 223 communicating with the first clearance opening. The locking tongue 322 of the locking component 3 can extend from the cavity sequentially through the first clearance opening and the second clearance opening 223. The locking tongue 322 of the locking component 3 can retract into the cavity.

[0060] The outer casing 22 can be made of a high-strength, wear-resistant material, for example, 304 steel. The outer casing 22 and the guide body 21 can be welded together.

[0061] In some possible implementations, such as Figure 4 As shown, the outer surface of the guide body 2 is provided with an upper frame snap-fit ​​member 4. Under the action of external force, the upper frame snap-fit ​​member 4 can undergo elastic deformation, and when the external force is removed, the upper frame snap-fit ​​member 4 can recover its deformation. When the battery frame 200 is placed on the battery base 100, the upper frame snap-fit ​​member 4 can snap into the battery frame 200, which helps to strengthen the assembly structure strength of the battery frame 200 and the battery base 100. When the battery frame 200 is placed on the battery base 100, the upper frame snap-fit ​​member 4 snaps into the beam 210 on the battery frame 200. For example, the upper frame snap-fit ​​member 4 elastically abuts against the beam 210. A mating part can be provided on the beam 210, and the mating part snaps into the upper frame snap-fit ​​member 4. The mating part can be a groove and notch provided on one side of the inner side of the beam 210, and the upper frame snap-fit ​​member 4 can be embedded in the mating part. It should be noted that... Figure 1 Only a portion of the structure of the battery frame 200 is shown.

[0062] The upper frame snap-fit ​​component 4 can be an elastic metal sheet, which has an arched top plate and connecting pieces located on both sides of the arched top plate and connecting to it. One of the connecting pieces is bolted to the guide body 2. The connecting piece and the arched top plate transition smoothly, and the arched top plate protrudes from the surface of the guide body 2. The connecting piece, the arched top plate, and the other connecting piece are arranged sequentially along the height direction of the guide body 2.

[0063] In some possible implementations, the upper frame snap-fit ​​4 is disposed on the outer wall of the guide body 21, and the outer shell 22 is provided with an avoidance notch 224 on the side opposite to the guide body 2. When the outer shell 22 is connected to the guide body 21, the upper frame snap-fit ​​4 is located in the avoidance notch 224.

[0064] Combination Figure 4 and Figure 5As shown, the locking assembly 3 may include a base 31 and a swing member 32. The base 31 is located outside the guide body 2 and can be fixedly connected to the base frame 1. The swing member 32 is at least partially located within the cavity of the guide body 2. One end of the swing member 32 extends out of the cavity and is hinged to the base 31. The guide body 2 can be fixed to the base frame 1. The other end of the swing member 32 is located within the cavity and is provided with a locking tongue 322. The battery base 100 also includes a telescopic component 5, which is connected to the guide body 2. The telescopic component 5 and the swing member 32 are in a transmission cooperation to drive the swing member 32 to rotate, so that the locking tongue 322 extends out of the guide body 2 from the first clearance opening and the second clearance opening, or retracts into the cavity from the clearance opening. The telescopic component 5 may be a telescopic cylinder.

[0065] In some possible implementations, such as Figure 5 As shown, the locking mechanism may include a transmission member 6, which is at least partially located within the cavity. The telescopic member 5 is mounted on the outer wall of the guide body 2. One end of the transmission member 6 is hinged to the swing member 32, and the other end of the transmission member 6 is connected to the telescopic member 5. The telescopic movement of the telescopic member 5 drives the swing member 32 to rotate through the transmission member 6.

[0066] The transmission component 6 and the swing component 32 together constitute a two-bar linkage mechanism. The telescopic component 5 drives the transmission component 6 to extend and retract, which can drive the swing component 32 to swing. During the swing of the swing component 32, its locking tongue 322 can extend or retract from the guide body to perform locking or unlocking actions.

[0067] In some possible implementations, such as Figure 1 As shown, this disclosure also provides a battery system, including a battery frame 200 and the aforementioned battery base 100. The bottom of the battery frame 200 has a plurality of beams 210 arranged in a crisscross pattern. As the battery frame 200 approaches the base frame 1 in a direction perpendicular to the base frame 1, the guide slopes 221 of the guide bodies 2 on the battery base 100 respectively engage with the corresponding beams 210 on the battery frame 200 to adjust the relative position of the battery frame 200 and the base frame 1.

[0068] Optionally, such as Figure 6As shown, a locking block 220 is provided on the beam 210. The locking block 220 can be located on the top side of the beam 210. When the locking assembly 3 and the battery frame 200 are locked together, the latch 322 extends out of the guide body 2 and is confined to the locking block 220. The locking block 220 may include a first block 221 and a second block 222. The first block 221 is fixed to the beam 210, and the second block 222 is detachably connected to the first block 221 by a fastener 223. When the locking assembly 3 and the battery frame 200 are locked together, the latch 322 is confined to the second block 222. The second block 222 needs to be replaced periodically to avoid damage to the beam 210 caused by the latch 322 acting directly on it for a long time.

[0069] This application also provides a vehicle with a body and the aforementioned battery system. The vehicle has a body with a running gear, which may include a motor and electronic control components. The battery base 100 of the battery system can be fixed to the body, for example, to the vehicle chassis. Battery cells are disposed within the battery frame 200, for example, a battery module is disposed within the battery frame 200. A first electrical connector is disposed at the bottom of the battery frame 200 and electrically connected to the battery module. A second electrical connector is disposed on the battery base and electrically connected to the vehicle's running gear. When the battery frame 200 is assembled to the battery base, the first and second electrical connectors are electrically connected, and the battery system provides electrical energy to the running gear, providing propulsion for the vehicle. It should be noted that... Figure 1 Only a partial structural diagram of the battery frame is shown in the image.

[0070] The above description is merely a preferred embodiment of this application and is not intended to limit this application in any way. Although this application has disclosed the preferred embodiment as above, it is not intended to limit this application. Any person skilled in the art can make some modifications or alterations to the above-mentioned technical content to create equivalent embodiments without departing from the scope of the technical solution of this application. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of this application without departing from the content of the technical solution of this application shall still fall within the scope of this application.

Claims

1. A battery tray, characterized by, The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The guide body is provided with one guide slope on one side of the length edge of the bottom support frame. The guide body is provided with another guide slope on one side of the width edge of the bottom support frame. The guide body comprises a guide main body and a shell.

2. The battery tray of claim 1, wherein, The guide main body is vertically connected to the bottom support frame, and the guide main body has a cavity and a first avoiding opening communicating with the cavity. The locking assembly is at least partially located in the cavity.

3. The battery tray of claim 1, wherein, The shell is attached to the surface of the guide main body, and the shell has the guide body. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity.

4. The battery tray of claim 1, wherein, The outer surface of the guide body is provided with an upper frame clamping piece.

5. The battery tray of claim 1, wherein, Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame.

6. The battery tray of claim 5, wherein, The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity.

7. The battery tray of claim 6, wherein, The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body.

8. A battery system characterized by, The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity.

9. The battery system of claim 8, wherein, The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece.

10. The battery system of claim 9, wherein, Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body.

11. A vehicle characterized by comprising: In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided with an avoiding gap on the side away from the guide body. In the state that the shell is connected to the guide main body, the upper frame clamping piece is located in the avoiding gap. The application relates to a battery bottom support, which comprises a bottom support frame, a plurality of guide bodies, a locking assembly and a battery frame. The locking assembly is at least partially located in the cavity. The locking assembly has a lock tongue which can be extended from the cavity to the first avoiding opening and the second avoiding opening in sequence, and the lock tongue can be retracted into the cavity. The outer surface of the guide body is provided with an upper frame clamping piece. Under the action of external force, the upper frame clamping piece can be elastically deformed, and the upper frame clamping piece can restore the deformation when the external force is removed. The upper frame clamping piece is arranged on the outer wall of the guide main body. The shell is provided The battery system of any one of claims 8-10, wherein a battery base of the battery system is fixed to the vehicle body, wherein the battery frame of the battery system is provided with battery cells, and wherein the battery system is electrically connected to the traveling mechanism.

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