A battery locking mechanism and an electric vehicle

Abstract

The present invention is applicable to the technical field of battery installation, and provides a battery locking mechanism and an electric vehicle. The battery locking mechanism includes: a locking block, which includes a connecting portion, a deformation portion, and a pressing portion; a locking handle for cooperating with the locking block; an elastic member is provided between the locking handle and the component where it is located. By setting the locking block and the locking handle, the battery is placed into the battery compartment on the vehicle frame; the battery pressing handle is lifted with a finger; the battery is pushed into the interior of the battery compartment; the battery pressing handle is pressed down to lock the battery. When the battery needs to be taken out, the battery pressing handle is lifted with a finger, and then the battery is pulled out. The structure is simple and ingeniously designed, facilitating the quick disassembly and assembly of the battery, quickly and stably fixing the battery in the vehicle's battery compartment, and solving the problems that the battery and the vehicle body shake during the movement of the fast battery replacement models on the market, which are likely to damage the battery and the body parts.

Description

Technical Field

[0001] The present invention belongs to the technical field of electric vehicles, and particularly relates to a battery locking mechanism and an electric vehicle. Background Art

[0002] During the use of electric vehicles, they need to be powered by batteries. The batteries of existing electric vehicle models such as electric scooters, electric bicycles, and electric motorcycles are placed in the battery compartment and can be removed for convenient charging and replacement.

[0003] Generally, the batteries of existing electric vehicles on the market are directly placed in the battery compartment. During movement, the batteries and the vehicle body shake, which is likely to damage the batteries and vehicle body parts. Some use multiple screws to fix the batteries, and multiple screws need to be tightened and loosened when disassembling and assembling the batteries, which is inconvenient.

[0004] Summary of the Invention

[0005] The present invention provides a battery locking mechanism to solve the above problems.

[0006] The present invention is implemented as follows. A battery locking mechanism includes:

[0007] A locking block, the locking block includes a connecting portion, a deformable portion, and a pressing portion. The deformable portion is connected between the connecting portion and the pressing portion. The connecting portion is used to connect with the component for installing the locking block.

[0008] A locking handle for cooperating with the locking block. One end of the locking handle is rotatably arranged and is provided with a cam portion that can be engaged with the pressing portion of the locking block.

[0009] An elastic member is provided between the locking handle and the component where it is located to fix the position of the locking handle. The locking block is arranged on one of the vehicle frame and the battery, and the locking handle is arranged on the other of the vehicle frame and the battery.

[0010] Preferably, the locking block is arranged on the top of the battery compartment on the vehicle frame, and the connecting portion is connected to the vehicle frame by screws.

[0011] Preferably, one end of the locking handle provided with the cam portion is rotatably connected to the top of the battery through a pin shaft.

[0012] Preferably, the battery includes a battery pack main body and a battery handle fixed on the top of the battery pack main body. The locking handle is installed on the battery handle. The elastic member is a torsion spring. The torsion spring is sleeved on the pin shaft and its two ends respectively abut against the locking handle and the battery handle.

[0013] Preferably, the locking block further includes an adjusting member for adjusting the distance between the pressing portion of the locking block and the locking handle.

[0014] Preferably, the adjusting member is an adjusting screw, which is threadedly connected to the connecting portion and located on the side of the pressing portion away from the locking handle, and one end of the adjusting screw abuts against the pressing portion.

[0015] The present invention also provides an electric vehicle, including the above battery locking mechanism.

[0016] Preferably, the electric vehicle further includes a position adjusting component for adjusting the position of the battery connecting piece. The position adjusting component includes:

[0017] Multiple parallel mounting bars slidably mounted on the bottom of the battery compartment of the vehicle frame, and each mounting bar is respectively provided with a battery connecting piece;

[0018] A scissor mechanism connected between the multiple parallel mounting bars, and the scissor mechanism is respectively hinged to the multiple parallel mounting bars;

[0019] An adjusting driving member for driving the scissor mechanism to extend or contract;

[0020] The adjusting driving member includes:

[0021] A bidirectional screw rod rotatably mounted on the vehicle frame and extending to the bottom of the battery compartment;

[0022] Inner thread sleeves threadedly connected to the two threaded segments of the bidirectional screw rod, and the two inner thread sleeves are respectively hinged to the opposite hinged ends of the scissor mechanism.

[0023] Preferably, side positioning plates are respectively provided on both sides of the inner cavity of the battery compartment. The side positioning plates are slidably connected to the vehicle frame. A positioning bolt is rotatably connected to the outer side wall of one side positioning plate. The positioning bolt penetrates through the side wall of the battery compartment and is threadedly connected thereto. A connecting disk is rotatably mounted in the battery compartment between the two side positioning plates. Connecting rods are respectively connected between the connecting disk and the two side positioning plates. One end of the connecting rod is hinged to the side positioning plate, and the other end is eccentrically hinged to the connecting disk.

[0024] Preferably, a protective pressing component is mounted on the side positioning plate, and the protective pressing components on the two side positioning plates are arranged in a staggered manner. The protective pressing component includes:

[0025] A side plate rotatably mounted on the side positioning plate and close to the opening of the battery compartment, and one end of the side plate extends into the battery compartment area;

[0026] A top plate slidably connected to one end of the side plate, and the top plate can slide along the length direction of the side plate. A threaded rod is rotatably mounted on the side plate along its length direction, and the threaded rod is threadedly connected to the top plate;

[0027] The pressing plate arranged inside the top plate is used to press the battery, and the pressing plate is connected to the top plate through multiple first compression springs;

[0028] The arc-shaped ratchet rack fixed on the plate body of the side plate within the battery compartment area, the center of the arc-shaped ratchet rack is located at the rotation center of the side plate, a receiving groove for accommodating the plate body of the side plate and the arc-shaped ratchet rack is provided on the inner side wall of the side plate, a ratchet pawl capable of meshing with the arc-shaped ratchet rack is rotatably installed in the receiving groove, a second compression spring is connected between the ratchet pawl and the side plate, the acting force of the second compression spring on the ratchet pawl is towards the side of the arc-shaped ratchet rack, and a pull rope is connected to the ratchet pawl. By pulling the pull rope, the ratchet pawl can be rotated to disengage from the arc-shaped ratchet rack.

[0029] Compared with the prior art, the embodiments of the present application mainly have the following beneficial effects:

[0030] The battery locking mechanism provided by the present invention sets a locking block and a locking handle. The battery is placed into the battery compartment on the vehicle frame; the battery pressing handle is lifted with a finger; the battery is pushed into the interior of the battery compartment; the battery pressing handle is pressed down to lock the battery. When the battery needs to be taken out, the battery pressing handle is lifted with a finger to separate the cam portion from the pressing part of the locking block, and then the battery is pulled outwards. The structure is simple, the design is ingenious, which is convenient for the quick disassembly and assembly of the battery, and the battery is quickly and stably fixed in the vehicle battery compartment, solving the problem that the battery and the vehicle body shake during the movement of the quick battery replacement models on the market, which is likely to damage the battery and vehicle body parts. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of a battery locking mechanism provided by Embodiment 1 of the present invention in a released state;

[0032] Figure 2 is a schematic structural diagram of a battery locking mechanism provided by Embodiment 1 of the present invention in a locked state;

[0033] Figure 3 is a schematic structural diagram of the locking block in a battery locking mechanism provided by Embodiment 1 of the present invention;

[0034] Figure 4 is an installation schematic diagram of the locking handle and the battery in a battery locking mechanism provided by Embodiment 1 of the present invention;

[0035] Figure 5 is an exploded view of the locking handle and the battery in a battery locking mechanism provided by Embodiment 1 of the present invention;

[0036] Figure 6 is an installation schematic diagram of the locking block and the vehicle frame in a battery locking mechanism provided by Embodiment 1 of the present invention;

[0037] Figure 7It is a schematic structural diagram of an electric vehicle provided in Embodiment 2 of the present invention;

[0038] Figure 8 It is the first-step schematic diagram of installing the battery in the present invention;

[0039] Figure 9 It is the second-step schematic diagram of installing the battery in the present invention;

[0040] Figure 10 It is the third-step schematic diagram of installing the battery in the present invention;

[0041] Figure 11 It is the fourth-step schematic diagram of installing the battery in the present invention;

[0042] Figure 12 Schematic structural diagram of a position adjustment component in an electric vehicle provided in Embodiment 3 of the present invention;

[0043] Figure 13 Schematic structural diagram of a side positioning plate, a threaded rod, and a connecting plate in an electric vehicle provided in Embodiment 3 of the present invention;

[0044] Figure 14 ] Schematic structural diagram of a protection and pressing component in an electric vehicle provided in Embodiment 3 of the present invention;

[0045] Figure 15 Schematic structural diagram of a protection and pressing component in another state of an electric vehicle provided in Embodiment 3 of the present invention;

[0046] Figure 16 is Figure 15 the partial enlarged view in

[0047] Annotation of reference numerals: 1, vehicle frame; 2, battery pack body; 3, locking block; 31, pressing part; 32, deformation part; 33, connecting part; 34, adjusting part; 4, battery handle; 5, battery compartment; 6, locking handle; 7, cam part; 8, pin shaft; 9, torsion spring; 10, mounting strip; 11, battery connecting piece; 12, scissor mechanism; 13, bidirectional screw rod; 14, internal thread sleeve; 15, slider; 16, positioning bolt; 17, side positioning plate; 18, connecting plate; 19, connecting rod; 20, side plate; 21, top plate; 22, first compression spring; 23, pressing plate; 24, threaded rod; 25, arc-shaped ratchet bar; 26, ratchet pawl. Detailed Description of the Invention

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "comprising" and "having" and any variations thereof in the specification and claims of this application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the specification and claims of this application or the above drawings are used to distinguish different objects and not to describe a specific order.

[0049] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0050] Embodiment 1

[0051] An embodiment of the present invention provides a battery locking mechanism, as Figures 1 - 6 shown, comprising:

[0052] A locking block 3, the locking block 3 includes a connecting portion 33, a deformation portion 32 and a pressing portion 31, the deformation portion 32 is connected between the connecting portion 33 and the pressing portion 31, the connecting portion 33 is used to connect with the component for installing the locking block 3, and the connecting portion 33, the deformation portion 32 and the pressing portion 31 are preferably integrally formed;

[0053] A locking handle 6 for cooperating with the locking block 3, one end of the locking handle 6 is rotatably arranged and provided with a cam portion 7 capable of engaging with the pressing portion 31 of the locking block 3;

[0054] An elastic member is provided between the locking handle 6 and the component where it is located, for fixing the position of the locking handle 6, that is, positioning the locking handle 6 so that it does not shake, preventing the cam portion 7 of the locking handle 6 from separating from the pressing portion 31 of the locking block 3 due to bumps, vibrations, etc., locking the battery and improving the stability of the battery;

[0055] The locking block 3 is provided on one of the frame 1 and the battery, and the locking handle 6 is provided on the other of the frame 1 and the battery;

[0056] It should be noted that when the battery is placed in the battery compartment 5 on the vehicle frame 1, the locking handle 6 is rotated, and then the battery is pushed into the interior of the battery compartment 5, causing the cam portion 7 of the locking handle 6 to move below the locking block 3. Then, the locking handle 6 is rotated in the reverse direction, and the cam portion 7 of the locking handle 6 engages with the free pressing end of the locking block 3, and the two are tightly in contact with each other, so that the battery cannot be directly pulled out, thus locking the battery. When the battery needs to be removed, the locking handle 6 is rotated to separate the cam portion 7 from the pressing portion 31 of the locking block 3, and then the battery is pulled out. The structure is simple and ingeniously designed, facilitating the quick disassembly and assembly of the battery, and quickly and stably fixing the battery in the vehicle's battery compartment, solving the problem that the battery and the vehicle body shake during the movement of fast battery swapping vehicles on the market, which is likely to damage the battery and vehicle body parts.

[0057] In this embodiment, the locking block 3 is provided on the vehicle frame 1, and the locking handle 6 is provided on the battery.

[0058] Specifically, the locking block 3 is provided at the top of the battery compartment 5 on the vehicle frame 1, and can be installed in a detachable manner or integrally formed. Preferably, the connecting portion 33 is connected to the vehicle frame 1 by screws, which is convenient for disassembly, replacement, and is applicable to different vehicle models.

[0059] Furthermore, one end of the locking handle 6 provided with the cam portion 7 is rotatably connected to the top of the battery through a pin shaft 8.

[0060] Even further, the elastic member is a torsion spring 9. The torsion spring 9 is sleeved on the pin shaft 8 and its two ends are respectively in contact with the locking handle 6 and the battery.

[0061] In this embodiment, the battery includes a battery pack main body and a battery handle 4 fixed to the top of the battery pack main body, which can be fixed by screws, and the locking handle 6 is installed on the battery handle 4.

[0062] In a specific implementation, the locking block 3 further includes an adjusting member 34 for adjusting the distance between the pressing portion 31 of the locking block 3 and the locking handle 6. In this embodiment, the adjusting member 34 is an adjusting screw, and the adjusting screw is threadedly connected to the connecting portion 33 and is located on the side of the pressing portion 31 away from the locking handle 6. One end of the adjusting screw abuts against the pressing portion 31. By rotating the adjusting screw, the adjusting screw pushes the pressing portion 31, the deformation portion 32 undergoes elastic deformation and at the same time the pressing portion 31 moves towards the side close to the locking handle 6, increasing the contact force between the pressing portion 31 and the cam portion 7. The adjusting screw can also be rotated in the reverse direction, the deformation portion 32 restores its deformation and at the same time the pressing portion 31 moves towards the side away from the locking handle 6, reducing the contact force between the pressing portion 31 and the cam portion 7, thereby adjusting the locking force of the battery.

[0063] Embodiment 2

[0064] This embodiment of the present invention provides an electric vehicle, such asFigure 7 As shown, it includes the battery locking mechanism described in Embodiment 1.

[0065] In summary, the working principle of the present invention is as follows:

[0066] The first step: As Figure 8 shown, place the battery into the battery compartment 5 on the vehicle frame 1; The second step: As Figure 9 shown, use a finger to lift the battery pressing handle; The third step: As Figure 10 shown, push the battery into the interior of the battery compartment 5; The fourth step: As Figure 11 shown, press down the battery pressing handle to lock the battery. The cam portion 7 of the locking handle 6 engages with the free pressing end of the locking block 3. When the battery needs to be taken out, use a finger to lift the battery pressing handle to separate the cam portion 7 from the pressing portion 31 of the locking block 3, and then pull out the battery outward.

[0067] Embodiment 3

[0068] Based on Embodiment 2, as Figures 12 - 16 shown, the electric vehicle further includes a position adjustment component for adjusting the position of the battery connection piece 11 to adapt to batteries of different models and sizes. The position adjustment component includes:

[0069] Multiple parallel mounting bars 10 slidably mounted on the bottom of the battery compartment 5 on the vehicle frame 1. Each mounting bar 10 is respectively provided with a battery connection piece 11. By means of snap-on installation, sliders 15 can be integrally provided at both ends of the mounting bar 10. A chute for slidably connecting with the slider 15 is provided on the side wall of the battery compartment 5;

[0070] A scissor mechanism 12 connected between multiple parallel mounting bars 10. The scissor mechanism 12 is respectively hinged to multiple parallel mounting bars 10. In this embodiment, it can be that the hinge pin in the middle of the scissor mechanism 12 is connected to the mounting bar 10;

[0071] An adjustment driving member for driving the scissor mechanism 12 to extend or shorten, so that the scissor mechanism 12 drives multiple parallel mounting bars 10 to move, adjusting the position of the battery connection piece 11 on the mounting bar 10 to cooperate with batteries of different models and sizes, improving adaptability; In this embodiment, the adjustment driving member includes:

[0072] A bidirectional screw rod 13 rotatably mounted on the vehicle frame 1 and extending to the bottom of the battery compartment 5, which can be rotatably mounted through a bearing;

[0073] The internal thread sleeves 14 are threadedly connected to the two threaded segments of the bidirectional screw rod 13. The two internal thread sleeves 14 are respectively hinged to the two opposite hinged ends of the scissors mechanism 12. By rotating the bidirectional screw rod 13, the bidirectional screw rod 13 drives the internal thread sleeve 14 to move, and the internal thread sleeve 14 drives the two opposite hinged ends of the scissors mechanism 12 to approach or move away from each other, so that the scissors mechanism 12 extends or contracts;

[0074] Furthermore, side positioning plates 17 are respectively provided on both sides of the inner cavity of the battery compartment 5. The side positioning plates 17 are slidably connected to the vehicle frame 1, and the sliding connection method can be a chute, a slide rail, etc. A positioning bolt 16 is rotatably connected to the outer side wall of one side positioning plate 17. The positioning bolt 16 penetrates through the side wall of the battery compartment 5 and is threadedly connected thereto. A connection disk 18 is rotatably installed in the battery compartment 5 between the two side positioning plates 17. Connecting rods 19 are respectively connected between the connection disk 18 and the two side positioning plates 17. One end of the connecting rod 19 is hinged to the side positioning plate 17, and the other end is eccentrically hinged to the connection disk 18;

[0075] It can be understood that by rotating the positioning bolt 16, the positioning bolt 16 drives one side positioning plate 17 to approach the battery and abut against the side wall of the battery. This side positioning plate 17 drives the connection disk 18 to rotate through the connecting rod 19, and the connection disk 18 drives the other side positioning plate 17 to approach the battery synchronously and abut against the side wall of the battery through another connecting rod 19, so as to clamp and position the battery and be able to adapt to batteries of different sizes.

[0076] Even further, a protective pressing component is installed on the side positioning plate 17. The protective pressing components on the two side positioning plates 17 are arranged in a staggered manner. The protective pressing component includes:

[0077] A side plate 20 rotatably installed on the side positioning plate 17 and close to the opening of the battery compartment 5. One end of the side plate 20 extends into the area of the battery compartment 5;

[0078] A top plate 21 with one end slidably connected to the side plate 20. The top plate 21 can slide along the length direction of the side plate 20, and the sliding connection method can be a chute, a slide rail, etc. A threaded rod 24 is rotatably installed on the side plate 20 along its length direction. The threaded rod 24 is threadedly connected to the top plate 21;

[0079] A pressing plate 23 provided on the inner side of the top plate 21 for pressing the battery. The pressing plate 23 is connected to the top plate 21 through multiple first compression springs 22. The two ends of the first compression springs 22 can be welded and fixed to the pressing plate 23 and the top plate 21 respectively;

[0080] The arc-shaped ratchet rack 25 fixed on the plate body within the battery compartment 5 area of the side plate 20 can be fixed by screws. The center of the arc-shaped ratchet rack 25 is located at the rotation center of the side plate 20. A receiving groove for accommodating the plate body of the side plate 20 and the arc-shaped ratchet rack 25 is formed on the inner side wall of the side plate 20. A ratchet pawl 26 capable of meshing with the arc-shaped ratchet rack 25 is rotatably installed in the receiving groove. A second compression spring is connected between the ratchet pawl 26 and the side plate 20. The acting force of the second compression spring on the ratchet pawl 26 is towards the arc-shaped ratchet rack 25 side. A pull rope is connected to the ratchet pawl 26. By pulling the pull rope, the ratchet pawl 26 can be rotated to disengage from the arc-shaped ratchet rack 25.

[0081] When the battery is pushed into the battery compartment 5, the battery pushes the side plate 20 to rotate 90 degrees. The side plate 20 drives the top plate 21 to rotate, and the pressing plate 23 on the top plate 21 presses the battery. At the same time, the arc-shaped ratchet rack 25 on the side plate 20 enters the receiving groove and is locked by the ratchet pawl 26, which can prevent the side plate 20 from rotating back. By setting the protection and pressing component, on the one hand, the battery can be further locked and fixed, and on the other hand, through the side plate 20, the top plate 21 and the pressing plate 23, the battery can be protected from external force impact. When the battery needs to be taken out, one hand pulls the pull rope to drive the ratchet pawl 26 to rotate and then disengage from the arc-shaped ratchet rack 25, and the other hand buckles the battery pressing handle and then pulls out the battery.

[0082] It should be noted that for the foregoing embodiments, for the sake of simple description, they are all expressed as a series of action combinations. However, those skilled in the art should know that the present invention is not limited by the described action sequence, because according to the present invention, certain steps may be adopted in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily essential to the present invention.

[0083] In the several embodiments provided by the present application, it should be understood that the disclosed device can be implemented in other ways. For example, the device embodiments described above are only illustrative. For example, the above-mentioned unit division is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point, the displayed or discussed coupling or communication connection between each other can be through some interfaces. The indirect coupling or communication connection between devices or units can be in the form of telecommunications or other forms.

[0084] The units described above as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0085] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the protection scope of the present invention. Obviously, the described embodiments are only partial embodiments of the present invention, rather than all embodiments. Based on these embodiments, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those of ordinary skill in the art can still, without conflict and without creative efforts, combine, add or delete the features in the embodiments of the present invention according to the situation, or make other adjustments, so as to obtain different technical solutions that are essentially not separated from the concept of the present invention, and these technical solutions also belong to the scope of protection of the present invention.

Claims

1. An electric vehicle, characterized in that: It includes a battery locking mechanism and a position adjustment component, and the battery locking mechanism includes: A locking block, comprising a connecting portion, a deforming portion, and a pressing portion, wherein the deforming portion is connected between the connecting portion and the pressing portion, and the connecting portion is used to connect to a component on which the locking block is installed; A locking handle for cooperating with the locking block, wherein one end of the locking handle is rotatably arranged and provided with a cam portion capable of engaging with the pressing portion of the locking block; An elastic member is provided between the locking handle and the component where it is located, for fixing the position of the locking handle, the locking block is provided on one of the frame and the battery, and the locking handle is provided on the other of the frame and the battery; The position adjustment assembly is used to adjust the position of the battery connecting piece, and includes: A plurality of parallel mounting strips slidably mounted on the bottom of the battery compartment on the vehicle frame, each of the mounting strips being mounted with a battery connector; A scissor mechanism connected between the plurality of parallel mounting bars, wherein the scissor mechanism is hinged to the plurality of parallel mounting bars respectively; Adjust the driving member to drive the scissor mechanism to extend or shorten; The adjusting drive member comprises: Rotate the bidirectional screw rod mounted on the frame and extending to the bottom of the battery compartment; An internal threaded sleeve is threadedly connected to the two threaded sections of the bidirectional screw rod, and the two internal threaded sleeves are respectively hinged to the two opposite hinged ends of the scissor-fork mechanism.

2. The electric vehicle according to claim 1, wherein: The locking block is arranged on the top of the battery compartment on the vehicle frame, and the connecting portion is connected to the vehicle frame via screws.

3. The electric vehicle according to claim 2, wherein: One end of the locking handle provided with the cam portion is rotatably connected to the top of the battery through a pin shaft.

4. The electric vehicle according to claim 3, wherein: The battery includes a battery pack body and a battery handle fixed to the top of the battery pack body. The locking handle is installed on the battery handle. The elastic member is a torsion spring. The torsion spring is sleeved on the pin shaft and its two ends respectively contact the locking handle and the battery handle.

5. The electric vehicle according to claim 1, wherein: The locking block also includes an adjusting member for adjusting the distance between the pressing portion of the locking block and the locking handle.

6. The electric vehicle according to claim 5, wherein: The adjusting member is an adjusting screw, which is threadedly connected to the connecting portion and is located on a side of the pressing portion away from the locking handle, and one end of the adjusting screw contacts the pressing portion.

7. The electric vehicle according to claim 1, wherein: Side positioning plates are respectively provided on both sides of the inner cavity of the battery compartment, and the side positioning plates are slidably connected to the vehicle frame. A positioning bolt is rotatably connected to the outer side wall of one of the side positioning plates, and the positioning bolt passes through the side wall of the battery compartment and is threadedly connected thereto. A connecting disk is rotatably installed between the two side positioning plates in the battery compartment, and connecting rods are respectively connected between the connecting disk and the two side positioning plates, one end of the connecting rod is hinged to the side positioning plate, and the other end is eccentrically hinged to the connecting disk.

8. The electric vehicle according to claim 7, wherein: The side positioning plates are provided with a protective pressing assembly, and the protective pressing assemblies on the two side positioning plates are staggered. The protective pressing assembly includes: A side plate is rotatably mounted on the side positioning plate and is close to the opening of the battery compartment, wherein one end of the side plate extends into the battery compartment area; A top plate having one end slidably connected to the side plate, the top plate being capable of sliding along the length direction of the side plate, a threaded rod being rotatably mounted on the side plate along its length direction, the threaded rod being threadedly connected to the top plate; A pressure plate provided on the inner side of the top plate, used to press the battery, the pressure plate being connected to the top plate via a plurality of first compression springs; An arcuate ratchet bar is fixed on the plate body of the side panel located in the battery compartment area, and the center of the arcuate ratchet bar is located at the rotation center of the side panel. A receiving groove for accommodating the plate body of the side panel and the arcuate ratchet bar is opened on the inner side wall of the side panel, and a pawl that can engage with the arcuate ratchet bar is rotatably installed in the accommodating groove, and a second compression spring is connected between the pawl and the side panel, and the force of the second compression spring on the pawl is toward one side of the arcuate ratchet bar. A pull rope is connected to the pawl, and by pulling the pull rope, the pawl can be driven to rotate and disengage from the arcuate ratchet bar.

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