A battery locking device and an electric vehicle

Abstract

This application provides a battery locking device and an electric vehicle. The battery locking device includes a housing and a clamping component. The housing is used to install the battery, and the clamping component is installed in the housing. The clamping component can move in a first direction to allow the battery to enter the housing from the outside or leave the housing from the outside. The clamping component can also move in a second direction to clamp and fix the battery to the housing. This can prevent the battery from shaking randomly, improve the reliability of the electrical connection between the battery and the power system, ensure the stable operation of the power system, reduce the risk of battery damage, and improve the battery's lifespan and range performance.

Description

Technical Field

[0001] This application relates to the field of replaceable battery equipment technology, and more particularly to a battery locking device and an electric vehicle. Background Technology

[0002] Electric vehicles are becoming increasingly popular as one of the most environmentally friendly modes of transportation. The battery in an electric vehicle is detachably mounted to the vehicle body via a battery locking device. Users can remove the battery from the locking device for charging or maintenance. Users can also install a new battery or a fully charged battery into the locking device to allow the electric vehicle to continue operating.

[0003] Current battery locking devices consist of a compartment and a locking mechanism connected to the compartment. When the compartment is slidably installed into the vehicle body, the locking mechanism secures the battery to the compartment, preventing it from detaching. Summary of the Invention

[0004] This application provides a battery locking device and an electric vehicle, which can prevent the battery from shaking randomly, improve the reliability of the electrical connection between the battery and the power system to ensure the stable operation of the power system, reduce the risk of battery damage, and improve the battery's service life and range performance.

[0005] The first aspect of this application provides a battery locking device, which includes a housing and a clamping member. The housing is used to install a battery, and the clamping member is installed in the housing. The clamping member is movable in a first direction so that the battery can enter the housing from the outside or leave the housing from the outside. The clamping member is also movable in a second direction to clamp and fix the battery to the housing. The clamping member includes a roller for engaging with the surface of the battery.

[0006] When a battery needs to be installed, the clamping component moves relative to the compartment in a first direction, allowing space for the battery to enter from the outside of the compartment. Once the battery is inside, the clamping component moves relative to the compartment in a second direction, moving closer to the battery and applying force to firmly secure it to the compartment. This prevents the battery from shaking inside the compartment or detaching, improving the reliability of the electrical connection between the battery and the external power system, ensuring stable operation of the system. It also reduces the risk of the battery being damaged by impacts from the compartment, extending battery life and range. During the battery's entry into the compartment, rollers roll on the battery's surface, preventing scratches from the clamping component and further improving battery life and range.

[0007] In one possible design, the housing includes a base plate for supporting the battery, and the plane of the base plate in contact with the battery has a set angle α with respect to the second direction, wherein the angle α is 5°≤α≤45°.

[0008] In one possible design, the compartment also includes a top plate, and rollers are used to abut against the battery during the movement of the clamping member in the second direction, and the rollers also abut against the top plate.

[0009] In one possible design, the chamber also includes a chute extending in a second direction, and the clamping component also includes a rotating shaft rotatably connected to a roller, the rotating shaft passing through the chute.

[0010] In one possible design, a limiting part is provided at one end of the slide pointing in the second direction, and the rotating shaft can abut against the limiting part to restrict the movement of the pressing component in the second direction.

[0011] In one possible design, the clamping component also includes a frame that is movably connected to the chamber, and a rotating shaft that is rotatably connected to the frame.

[0012] In one possible design, the battery locking device also includes an elastic element, one end of which is connected to the top plate and the other end of which is connected to the frame.

[0013] In one possible design, the elastic element is a spring, the top plate is provided with a first recess, the first end of the spring is located in the first recess, the first recess is provided with a first protrusion, and the first end of the spring is sleeved on the first protrusion.

[0014] In one possible design, the frame is provided with a second recess, the second end of the spring is located in the second recess, the second recess is provided with a second protrusion, and the second end of the spring is sleeved on the second protrusion.

[0015] In one possible design, the top plate is also provided with a boss extending into the interior of the compartment, and a first recess is provided on the side of the boss facing the second recess.

[0016] In one possible design, the frame is also provided with a hollow section, and at least a portion of the boss is located inside the hollow section when the frame moves along the first direction.

[0017] In one possible design, the compartment also includes a first side plate, a groove is formed on the first side plate, and the clamping component also includes a limiting component, which passes through the groove to the side of the first side plate opposite to the clamping component. The limiting component can abut against the first side plate to restrict the movement of the clamping component in a third direction.

[0018] In one possible design, the limiting component is a bolt assembly through which the connecting shaft passes, with at least a portion of the bolt assembly located on the side of the first side plate opposite to the clamping component and abutting against the first side plate.

[0019] In one possible design, the compartment also includes a second side plate located on the side of the first side plate away from the clamping member. The second side plate has a through groove, and the bolt assembly extends from the groove into the through groove.

[0020] In one possible design, the compartment also includes a baffle to prevent batteries from entering the compartment from the outside.

[0021] The second aspect of this application provides an electric vehicle, which includes a vehicle body, a battery locking device, and a battery. The battery locking device is installed on the vehicle body and is the same as described above. The battery is installed in the compartment and has the same effect as described above.

[0022] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this application. Attached Figure Description

[0023] Figure 1 A schematic diagram illustrating the interaction between the battery locking device and the battery provided in this application;

[0024] Figure 2 for Figure 1 A schematic diagram of the interaction between the battery locking device and the battery from another perspective;

[0025] Figure 3 for Figure 2 A cross-sectional view of the battery locking device and the battery along direction A, wherein the battery is not engaged with the battery locking device;

[0026] Figure 4 for Figure 2 A cross-sectional view of the battery locking device and the battery along direction A, wherein the battery is in rolling contact with the rollers in the battery locking device;

[0027] Figure 5 for Figure 2 A cross-sectional view of the battery locking device and the battery along direction A, wherein the clamping component does not move along the second direction;

[0028] Figure 6 for Figure 2 A cross-sectional view of the battery locking device and the battery along direction A, wherein the battery is locked by the battery locking device;

[0029] Figure 7 for Figure 6 Force analysis diagram of the intermediate clamping component and the battery;

[0030] Figure 8 for Figure 6 A magnified view of part B in the middle section;

[0031] Figure 9for Figure 2 A cross-sectional view of the battery locking device and the battery along direction A, wherein the clamping component is separate from the battery;

[0032] Figure 10 for Figure 1 A schematic diagram showing the engagement of the battery locking device and the battery, where the second side plate on one side is not shown;

[0033] Figure 11 for Figure 10 A schematic diagram of the interaction between the battery locking device and the battery from another perspective;

[0034] Figure 12 for Figure 10 Schematic diagram of the structure of the first side plate;

[0035] Figure 13 for Figure 9 Schematic diagram of the middle clamping component;

[0036] Figure 14 for Figure 9 A magnified view of part C in the middle;

[0037] Figure 15 for Figure 14 Schematic diagram of the top slab structure;

[0038] Figure 16 for Figure 10 A schematic diagram showing the fit between the central clamping component, the first side plate, and the second side plate;

[0039] Figure 17 for Figure 16 Schematic diagram of the structure of the second side plate;

[0040] Figure 18 for Figure 1 Exploded view of the battery locking device and battery structure;

[0041] Figure 19 for Figure 18 A schematic diagram of the middle section connector.

[0042] Figure label:

[0043] 1-Storage body;

[0044] 11-Base plate;

[0045] 111 - First mounting platform;

[0046] 12-Top plate;

[0047] 121 - First recessed portion;

[0048] 122 - First protrusion;

[0049] 123 - Boss;

[0050] 124 - Second mounting platform;

[0051] 13-First side plate;

[0052] 131-Groove;

[0053] 132 - Limiting part;

[0054] 133 - First mounting slot;

[0055] 134 - Third mounting platform;

[0056] 14-Second side panel;

[0057] 141 - Through groove;

[0058] 142 - Second mounting slot;

[0059] 15-stop connector;

[0060] 151 - Fourth mounting platform;

[0061] 2-Clamping components;

[0062] 21-Frame;

[0063] 211 - Second recessed portion;

[0064] 212 - Second protrusion;

[0065] 213 - Openwork section;

[0066] 22-rollers;

[0067] 23-Shaft;

[0068] 231 - Through hole;

[0069] 24 - Limiting components;

[0070] 241- Bolt;

[0071] 241a - Screw head;

[0072] 241b - Screw;

[0073] 242-Nut;

[0074] 3-Elastic element;

[0075] 31 - First end;

[0076] 32 - Second end;

[0077] 4-Battery;

[0078] 41-Surface;

[0079] First direction X;

[0080] Second direction Y;

[0081] The third direction, Z.

[0082] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. Detailed Implementation

[0083] To better understand the technical solution of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0084] It should be understood that the described embodiments are merely some, not all, of the embodiments in this application. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0085] The terminology used in the embodiments of this application is for the purpose of describing particular embodiments only and is not intended to be limiting of this application. The singular forms “a,” “the,” and “the” used in the embodiments of this application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0086] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

[0087] It should be noted that the directional terms such as "upper," "lower," "left," and "right" described in the embodiments of this application are used to describe the angles shown in the accompanying drawings and should not be construed as limiting the embodiments of this application. Furthermore, in the context, it should be understood that when it is mentioned that an element is connected "upper" or "lower" to another element, it can be directly connected to the other element "upper" or "lower," or indirectly connected to the other element "upper" or "lower" through an intermediate element.

[0088] The first aspect of this application provides a battery locking device for the field of replaceable battery equipment technology. Specifically, the battery locking device can be applied to mobile devices that require battery replacement, such as electric vehicles, electric boats, or electric aircraft—vehicles that require battery power. Please refer to... Figures 1-3As shown, the battery locking device includes a compartment 1 and a pressing component 2. The compartment 1 is used to install the battery 4. The pressing component 2 is installed on the compartment 1. The pressing component 2 can move along the first direction X so that the battery 4 can enter the compartment 1 from the outside or leave the compartment 1 to the outside. The pressing component 2 can also move along the second direction Y to press and fix the battery 4 to the compartment 1.

[0089] In this embodiment, when the battery 4 needs to be installed, the clamping component 2 moves relative to the compartment 1 along the first direction X, allowing the clamping component 2 to create installation space so that the battery 4 can enter the compartment 1 from the outside. After the battery 4 enters the compartment 1, the clamping component 2 moves relative to the compartment 1 along the second direction Y, causing the clamping component 2 to move closer to the battery 4 and apply force to the battery 4, pressing and fixing the battery 4 to the compartment 1. This prevents the battery 4 from shaking inside the compartment 1 and from moving away from the compartment 1, improving the reliability of the electrical connection between the battery 4 and the power system outside the compartment 1, ensuring the stable operation of the power system, and also reducing the risk of the battery 4 being damaged by the compartment 1, thus improving the battery 4's lifespan and range performance.

[0090] When it is necessary to remove the battery 4 from the compartment 1, the clamping member 2 moves again relative to the compartment 1 in the first direction X, so that the clamping member 2 disengages from the battery 4, so that the battery 4 can move from the inside of the compartment 1 to the outside of the compartment 1.

[0091] Please refer to Figure 3 As shown, the first direction X and the second direction Y are two unidirectional directions with opposite orientations. The first direction X can be the direction of movement of the battery 4 from the outside of the compartment 1 into the interior of the compartment 1, and this direction is not limited to the two directions being exactly the same. The second direction Y can be the direction of movement of the battery 4 from the interior of the compartment 1 to the outside of the compartment 1, and this direction is also not limited to the two directions being exactly the same. The straight line containing the first direction X and the straight line containing the second direction Y can be parallel, collinear, or intersecting. In the following embodiments, this paper mainly describes the collinear relationship as an example.

[0092] Specifically, please refer to Figures 3-6 As shown, the compartment 1 includes a base plate 11 for supporting the battery 4. The plane of the base plate 11 that contacts the battery 4 has a set angle α with the second direction Y, where the angle α is 5°≤α≤45°.

[0093] In this embodiment, the battery 4 is supported by the base plate 11. The battery 4 can slide from the outside of the compartment 1 into the interior of the compartment 1 on the base plate 11, or the battery 4 can slide from the interior of the compartment 1 to the outside of the compartment 1 on the base plate 11, thereby detaching from the compartment 1. Since there is a set angle α between the plane of the base plate 11 and the battery 4 and the second direction Y, that is, there is a set angle α between the direction of movement of the battery 4 detaching from the compartment 1 and the direction of movement of the pressing component 2 (the second direction Y), the pressing component 2 will contact the battery 4 and apply pressure to the battery 4 to press the battery 4 onto the base plate 11, so that there is a large static friction between the pressing component 2 and the battery 4, and there is also a large static friction between the contact surface of the base plate 11 and the battery 4. These two static friction forces can resist the external interference forces borne by the compartment 1, prevent the battery 4 from shaking or detaching from the compartment 1, thereby improving the electrical connection reliability between the battery 4 and the external power system, reducing the risk of the battery 4 being damaged by the compartment 1, and improving the service life and range performance of the battery 4.

[0094] Further, please refer to Figures 6-7 As shown, the set range of the included angle α (5°≤α≤45°) ensures that the included angle β between the force F (along the second direction Y) exerted by the clamping component 2 on the battery and the pressure Fn (the component of the force F) is within the self-locking friction angle range. That is, regardless of the magnitude of the force exerted by the clamping component 2 along the second direction Y, the component force F1 that causes the clamping component 2 to pull the battery 4 away from the compartment 1 is always less than the frictional force f between the battery 4 and the base plate 11. This prevents the battery 4 from moving relative to the base plate 11, thereby improving the reliability of the electrical connection between the battery 4 and the external power system, reducing the risk of the battery 4 being damaged by the compartment 1, and improving the battery 4's lifespan and range performance. Figure 7 The length of the directional arrows representing the forces does not represent the actual magnitude of each force.

[0095] When the included angle α is too small (e.g., α < 5°), the included angle β is too large, requiring a higher coefficient of friction between the battery 4 and the base plate 11. This means the contact surface between the battery 4 and the base plate 11 needs to be rougher, making the manufacturing process more difficult. When the included angle α is too large (e.g., α > 45°), the tilt of the base plate 11 relative to the second direction Y needs to be too large, requiring an excessively large height of the compartment 1, which is unsuitable for use in electrical equipment with strict height restrictions. Therefore, a setting range of 5° ≤ α ≤ 45° is preferable.

[0096] In this embodiment, the second direction Y can be horizontal in actual use, making it easier for the user to insert or remove the battery 4 from the compartment 1 from a direction with a smaller inclination relative to the horizontal. Especially when the battery locking device is applied to the vehicle, the battery locking device is usually installed at the bottom of the vehicle, and the battery 4 can be located below the clamping component 2, so that the direction of movement of the battery 4 can be in a direction that is convenient for the user to operate, reducing the user's labor intensity and thus improving the user's work efficiency.

[0097] Furthermore, the base plate 11 can be a flat plate, a V-shaped plate, or other components that can support the battery 4 and slide in conjunction with it, depending on the shape of the battery 4. The subsequent description of the base plate 11 will primarily use a flat plate as an example.

[0098] More specifically, the included angle α can be 10°, and the height dimension of the compartment 1 is relatively small, making the battery locking device of this application suitable for electrical equipment with strict height restrictions.

[0099] In one specific embodiment, please refer to Figures 3-6 As shown, the clamping component 2 includes a roller 22, which is used to engage with the surface 41 of the battery 4.

[0100] In this embodiment, when the battery 4 enters the compartment 1 from the outside, the surface 41 of the battery 4 abuts against the roller 22 of the clamping member 2, and the force exerted by the battery 4 on the roller 22 has a component along the first direction X. That is, the battery 4 can drive the clamping member 2 to move along the first direction X, making room in the compartment 1 so that the battery 4 can smoothly enter the compartment 1. During the process of the battery 4 entering the compartment 1, the roller 22 rolls on the surface 41 of the battery 4, and the rolling contact prevents the battery 4 from being scratched by the clamping member 2, thereby improving the service life and range performance of the battery 4.

[0101] The clamping component 2 may include at least two rollers 22, thereby increasing the contact points between the clamping component 2 and the surface 41 of the battery 4, so that when the battery 4 enters the compartment 1, the force that pushes the clamping component 2 to move in the first direction X is more balanced and stable.

[0102] In addition, the diameter of the roller 22 is at least 8mm or greater. Depending on the different usage requirements, the diameter of the roller 22 can be 1cm, 2cm, 3cm, 4cm, 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, etc.

[0103] Please refer to Figures 3-6 In the embodiment shown, the clamping member 2 includes two rollers 22 located on both sides of the clamping member 2 and not on the same axis. Subsequent embodiments herein will be described using examples containing two rollers 22.

[0104] Please refer to Figure 6 and Figure 8 As shown, the compartment 1 also includes a top plate 12, and a roller 22 is located between the top plate 12 and the battery 4. During the movement of the clamping member 2 in the second direction Y, the roller 22 is used to abut against the battery 4, and the roller 22 also abuts against the top plate 12.

[0105] In this embodiment, since the roller 22 is located between the top plate 12 and the battery 4, and the roller 22 abuts against both the battery 4 and the top plate 12, when the battery 4 applies a force tangential to the rim of the roller 22, the battery 4 generates a torque M1 that rotates the roller 22 in a certain direction. Simultaneously, because the roller 22 has a tendency to rotate, the top plate 12 also generates a torque M2 on the rim of the roller 22 in the opposite direction to the torque M1, thereby hindering the movement of the battery 4 relative to the roller 22. Therefore, when the battery 4 has a tendency to move from inside the compartment 1 to outside the compartment 1, the frictional force f1 between the battery 4 and the roller 22 will cause the roller 22 to have a tendency to roll relative to the top plate 12 (e.g., towards the second direction Y). The frictional force f2 between the top plate 12 and the roller 22 is at least greater than the frictional force f1 between the battery 4 and the roller 22, so that the torque M2 between the top plate 12 and the roller 22 is at least greater than the torque M1 between the battery 4 and the roller 22, thereby hindering the battery 4 from moving from inside the compartment 1 to the outside of the compartment 1. Similarly, even if the battery 4 has a planar rotation tendency (around the plane perpendicular to the bottom plate 11) inside the compartment 1, a part of the battery 4 also has a tendency to move to the outside of the compartment 1, which can also be hindered by the roller 22 abutting against the top plate 12. Therefore, in this embodiment, the battery locking device can effectively fix the battery 4 to the compartment 1, improve the reliability of the electrical connection between the battery 4 and the power system, reduce the risk of the battery 4 being damaged by the compartment 1, and improve the battery's service life and range performance.

[0106] In this configuration, the plane of the top plate 12 intersects with the direction of movement of the battery 4, so that the tangent of the top plate 12 and the roller 22 intersects with the tangent of the battery 4 and the roller 22. When the battery 4, either as a whole or in part, tends to move outward from the compartment 1, the friction of the battery 4 on the roller 22 will drive the roller 22 to move into a narrower space between the battery 4 and the top plate 12. The greater the squeezing force of the roller 22 on the battery 4 and the top plate 12, the greater the friction force f1 and friction force f2 will be. Eventually, they will balance until the roller 22 can no longer roll, that is, the friction force f1 and friction force f2 will eventually transform into static friction force of equal magnitude, while the torque M1 and torque M2 will transform into static friction torque of equal magnitude but opposite direction, ultimately achieving a self-locking effect.

[0107] The plane containing the top plate 12 can be intersecting or parallel to the second direction Y. The following descriptions of the embodiments will mainly use the parallel relationship as an example.

[0108] Roller 22 can also be a rubber-coated roller. The rubber-coated roller deforms between the contact battery 4 and the top plate 12, increasing the contact area. This helps to increase the friction between roller 22 and battery 4 and top plate 12 respectively, improving the reliability of self-locking. It also helps to reduce the compressive stress of roller 22 on battery 4 and top plate 12, and helps to buffer the impact force of contact between battery 4 and roller 22, thus improving the service life of battery 4 and top plate 12.

[0109] Please refer to Figures 9-12 As shown, the chamber body 1 also includes a slide groove 131 extending along the second direction Y, and the clamping component 2 also includes a rotating shaft 23 rotatably connected to the roller 22, with the rotating shaft 23 passing through the slide groove 131.

[0110] In this embodiment, since the rotating shaft 23 of the clamping component 2 passes through the slide groove 131 extending along the second direction Y, the clamping component 2 can move in the second direction Y under the guidance of the slide groove 131. When the roller 22 of the clamping component 2 abuts against the battery 4 and the top plate 12 respectively, the direction of the force exerted by the roller 22 on the battery 4 and the direction of the force exerted by the roller 22 on the top plate 12 are always consistent, so that the magnitude of the torque M1 between the top plate 12 and the roller 22 and the magnitude of the torque M2 between the roller 22 and the battery 4 can change in a preset direction, thereby achieving a controllable self-locking effect. Therefore, the battery locking device in this embodiment has higher reliability.

[0111] In the above embodiment, since there are two rollers 22 that are not coaxial, there are also two rotating shafts 23 that are not coaxial. Therefore, the chamber body 1 includes a groove 131 that is respectively matched with the two rotating shafts 23.

[0112] Please refer to Figures 11-12 As shown, a limiting part 132 is provided at one end of the slide groove 131 pointing in the second direction Y, and the rotating shaft 23 can abut against the limiting part 132 to restrict the movement of the pressing member 2 in the second direction Y.

[0113] In this embodiment, during the movement of the pressing component 2 along the second direction Y, the rotating shaft 23 will abut against the limiting part 132, thereby preventing the pressing component 2 from continuing to move along the second direction Y, so as to prevent the roller 22 from continuing to enter the narrower space between the battery 4 and the top plate 12, and controlling the pressure of the roller 22 on the battery 4 within the limit range of the compressive force that the battery 4 can withstand, so as to prevent the battery 4 from being crushed and damaged, and improve the service life of the battery 4.

[0114] In this embodiment, the slide groove 131 is closed at least at one end along the second direction Y, meaning the limiting part 132 can be an arc-shaped sidewall or a planar sidewall of the slide groove 131. The arc-shaped sidewall can fit against the rotating shaft 23, and the large contact area between the arc-shaped sidewall and the rotating shaft 23 results in lower pressure on the rotating shaft 23, thus improving the service life of the rotating shaft 23. In the subsequent description of embodiments, this article mainly uses the arc-shaped sidewall as an example.

[0115] Please refer to Figure 6 and Figure 13 As shown, the clamping component 2 also includes a frame 21, which is movably connected to the chamber 1, and a rotating shaft 23 is rotatably connected to the frame 21.

[0116] In this embodiment, the frame 21 is rotatably connected to the rotating shaft 23, so that the roller 22 is rotatably connected to the frame 21 via the rotating shaft 23. The frame 21 can transmit the external force it bears to the roller 22, so that the roller 22 can move in the second direction Y and press against the battery 4 and the top plate 12. The frame 21 is movably connected to the compartment 1, that is, the compartment 1 can serve as the force-bearing foundation of the frame 21, so that the frame 21 can move relative to the compartment 1 at least in the second direction Y, thereby always applying pressure to the battery 4 and the top plate 12 to ensure the reliability of the self-locking mechanism.

[0117] A drive component or an energy storage component may be installed between the storage body 1 and the frame 21 to apply force to the frame 21.

[0118] Please refer to Figures 3-6 As shown, the battery locking device also includes an elastic element 3, one end of which is connected to the top plate 12, and the other end of which is connected to the frame 21.

[0119] In this embodiment, the elastic element 3 serves as an energy storage component for the top plate 12 and the frame 21. When the battery 4 enters the interior of the compartment 1 from the outside, it pushes the pressing component 2 to move along the first direction X. Figures 3-5 As shown), the elastic force of the elastic element 3 needs to be overcome to compress the elastic element 3. After the battery 4 enters the interior of the compartment 1 and stops moving, under the action of the elastic force of the compressed elastic element 3, the elastic element 3 rebounds and pushes the frame 21 to move along the second direction Y. Figure 6 As shown, the roller 22 abuts against and presses against the battery 4 and the top plate 12 to produce the self-locking effect described in the above embodiment. At the same time, since the compression of the elastic element 3 is greater than the rebound, the elastic element 3 remains compressed and continuously applies a force to the frame 21, so that the frame 21 maintains a tendency to drive the roller 22 to move in the second direction Y, thereby improving the self-locking reliability of the battery locking device in this embodiment.

[0120] In the above embodiments, please refer to Figures 14-15As shown, the elastic element 3 is a spring. The top plate 12 is provided with a first recess 121. The first end 31 of the spring is located in the first recess 121. The first recess 121 is provided with a first protrusion 122. The first end 31 of the spring is sleeved on the first protrusion 122. This arrangement ensures that the first end 31 of the spring will not move freely relative to the top plate 12, that is, it ensures that the force point between the top plate 12 and the spring remains fixed, thereby enabling the spring to apply a stable and controllable force to the frame 21, and improving the self-locking reliability of the battery locking device of this application.

[0121] Specifically, please refer to Figure 13 and Figure 14 As shown, the frame 21 is provided with a second recess 211, the second end 32 of the spring is located in the second recess 211, the second recess 211 is provided with a second protrusion 212, and the second end 32 of the spring is sleeved on the second protrusion 212. This arrangement ensures that the second end 32 of the spring will not move freely relative to the frame 21, that is, it ensures that the force point between the frame 21 and the spring remains fixed, thereby enabling the spring to apply a stable and controllable force to the frame 21, and improving the self-locking reliability of the battery locking device of this application.

[0122] More specifically, please refer to Figures 14-15 As shown, the top plate 12 is also provided with a boss 123 extending into the interior of the compartment 1, and a first recess 121 is provided on the side of the boss 123 facing the second recess 211.

[0123] In this embodiment, since the roller 22 is located between the top plate 12 and the battery 4, and the frame 21 connected to the roller 22 is also located between the top plate 12 and the battery 4, the frame 21 and the top plate 12 are not on the same plane. Directly setting a spring connection between the frame 21 and the top plate 12 is difficult, and the spring would also undergo significant bending deformation, resulting in a large range of angular variation in the direction of the force applied to the frame 21, making it difficult to maintain the preset self-locking effect. By using a protrusion 123 extending from the top plate 12 into the compartment 1, and setting the first recess 121 on the side of the protrusion 123 facing the second recess 211, the method of connecting the spring between the frame 21 and the top plate 12 becomes simpler. Furthermore, the spring can undergo near-linear compression deformation, resulting in a small range of angular variation in the direction of the force applied to the frame 21, and the resulting self-locking effect can be preset. Therefore, the battery locking device of this embodiment can apply a stable and controllable self-locking effect to the battery 4.

[0124] The spring is tilted relative to the second direction Y so that the force exerted by the spring on the frame 21 can be distributed to distribute more pressure, thereby pressing the battery 4 onto the base plate 11 and improving the self-locking reliability of the battery locking device of this application.

[0125] In the above embodiments, please refer to Figures 13-15 As shown, the frame 21 is also provided with a hollow part 213. When the frame 21 moves along the first direction X, at least a part of the boss 123 is located inside the hollow part 213, so that the frame 21 is not limited by the size of the boss 123, so as to avoid interference between the frame 21 and the boss 123, thereby allowing the pressing member 2 to move smoothly along the first direction X.

[0126] In the above embodiments, please refer to Figures 11-12 and Figure 16 As shown, the compartment 1 also includes a first side plate 13, with a groove 131 formed on the first side plate 13. The clamping component 2 also includes a limiting component 24, which passes through the groove 131 to the side of the first side plate 13 opposite to the clamping component 2. The limiting component 24 can abut against the first side plate 13 to restrict the movement of the clamping component 2 along the third direction Z. This arrangement ensures that when the clamping component 2 moves along the second direction Y, the clamping component 2 will not move arbitrarily relative to the battery 4 along the third direction Z, so that the roller 22 of the clamping component 2 can reliably abut against the battery 4, thereby improving the self-locking reliability of the battery locking device in this embodiment.

[0127] Please refer to Figure 10 , Figure 16 and Figure 18 As shown, the compartment 1 includes two first side plates 13, which are located on both sides of the clamping member 2 along the third direction Z. The sliding grooves 131 are also located on both sides of the clamping member 2 along the third direction Z, so that the sliding grooves 131 can apply symmetrical support force to the rotating shaft 23 of the clamping member 2, thereby enabling the clamping member 2 to maintain balance equivalent to the compartment 1 after it is detached from the battery 4.

[0128] Specifically, please refer to Figure 16 As shown, the limiting component 24 is a bolt assembly through which the connecting shaft 23 passes. At least a portion of the bolt assembly is located on the side of the first side plate 13 away from the pressing component 2 and abuts against the first side plate 13.

[0129] In this embodiment, the bolt assembly is used to install the rotating shaft 23 onto the clamping component 2 to prevent the rotating shaft 23 from detaching from the clamping component 2. At the same time, the bolt assembly is also used to abut against the side of the first side plate 13 away from the clamping component 2 to restrict the movement of the clamping component 2 relative to the chamber body 1 in the third direction Z. Therefore, the clamping component 2 in this embodiment has a simpler structure and is easier to manufacture.

[0130] The bolt assembly includes a bolt 241 and a nut 242. The thread 241b of the bolt 241 extends from one end of the rotating shaft 23 through the through hole 231 of the rotating shaft 23 to the other end of the rotating shaft 23, and then connects with the nut 242 to prevent the rotating shaft 23 from detaching from the clamping component 2, ensuring reliable connection. Simultaneously, the thread head 241a of the bolt 241 can abut against the side of one of the first side plates 13 opposite to the clamping component 2, and the nut 242 can abut against the side of the other first side plate 13 opposite to the clamping component 2, thereby restricting the movement of the clamping component 2 relative to the chamber 1 in the third direction Z.

[0131] Specifically, please refer to Figures 16-17 As shown, the chamber body 1 also includes a second side plate 14, which is located on the side of the first side plate 13 away from the clamping member 2. The second side plate 14 has a through groove 141, and the bolt assembly extends from the groove 131 into the through groove 141.

[0132] In this embodiment, the second side plate 14 protects the battery 4 inside the compartment 1 and also protects the portion (bolt assembly) extending from the clamping member 2 out of the first side plate 13, preventing damage from external objects, thereby improving the service life of the battery 4 and the reliability of the battery locking device of this application. The second side plate 14 has a through groove 141, within which the bolt assembly is located, ensuring that the gap between the second side plate 14 and the first side plate 13 is not too large, and reducing the dimension of the compartment 1 along the third direction Z, thus minimizing the space occupied by the battery locking device on the electrical equipment. Furthermore, the through groove 141 facilitates user maintenance of the bolt assembly without disassembling the compartment 1, reducing the number of disassemblies and improving the service life of the battery locking device of this application.

[0133] In the above embodiments, please refer to Figure 6 , Figures 18-19 As shown, the compartment 1 also includes a baffle 15, which is used to block the battery 4 from entering the compartment 1 from the outside, so as to limit the position of the battery 4 inside the compartment 1.

[0134] The baffle 15 can be connected to the second side plate 14 or the base plate 11, including a detachable connection or an integrally formed connection. The embodiment shown in the figure is a detachable connection between the baffle 15 and the second side plate 14.

[0135] In the above embodiments, please refer to Figure 12 , Figure 15 , Figures 17-19As shown, the base plate 11 includes a first mounting platform 111 disposed opposite to the base plate 11, which engages with a portion of the second mounting groove 142 of the second side plate 14. The top plate 12 includes a second mounting platform 124 disposed opposite to the top plate 12, which engages with a first mounting groove 133 of the first side plate 13. A third mounting platform 134 is provided on one side of the first side plate 13, which engages with a portion of the second mounting groove 142 of the second side plate 14. The retaining member 15 includes a fourth mounting platform 151 disposed opposite to the top plate 12, which engages with a portion of the second mounting groove 142 of the second side plate 14. The above engagements can be clearance fits, further secured by screws. Alternatively, they can be interference fits.

[0136] The working principle of the battery locking device in this application is as follows:

[0137] like Figure 3 As shown, battery 4 is ready to enter the interior of compartment 1. Figure 4 As shown, battery 4 slides into the compartment 1 along the bottom plate 11 and rolls into contact with roller 22, thereby driving the pressing component 2 to move along the first direction X. During the movement, the elastic element 3 (spring) is compressed between the frame 21 and the top plate 12. Figure 5 As shown, battery 4 comes into contact with the stop member 15 and stops moving. Figure 6 As shown, under the elastic force of the elastic element 3, the frame 21 and roller 22 are pushed to move along the second direction Y into a narrower space between the battery 4 and the top plate 12, pressing the battery 4 against the bottom plate 11. When the battery 4 tends to move, the torque M1 generated by the battery 4 on the roller will balance the torque M2 generated by the top plate 12 on the roller 22, thereby achieving a self-locking effect. Figure 9 As shown, when the user manually or by using an external drive mechanism to push the clamping component 2 to move along the first direction X, the roller 22 separates from the battery 4, releasing the self-locking effect, so that the battery 4 can move from inside the compartment 1 to outside the compartment 2.

[0138] When the included angle α is 10°, when the elastic element 3 (spring) applies a spring force of 100N to the pressing component 2, when the roller 22 abuts against and presses the top plate 12 and the battery 4, the frictional force of the roller 22 on the battery 4 is at least 250N. The normal single-handed operating force of a person is greater than 200N. Therefore, the battery locking device of this application can effectively keep the battery 4 stationary in the compartment 1.

[0139] The second aspect of this application provides an electric vehicle, which includes a vehicle body (not shown in the figure), a battery locking device and a battery 4. The battery locking device is installed on the vehicle body and is the same as the battery locking device in the above embodiment. The battery 4 is installed in the compartment 1. The electric vehicle of this application has the effects of the above embodiment.

[0140] Among them, electric vehicles can be land vehicles such as electric cars, electric bicycles, electric tricycles, or electric balance vehicles.

[0141] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A battery locking device, characterized in that, The battery locking device includes: The compartment (1) is used to install the battery (4); A clamping component (2) is installed on the compartment (1) and is movable in a first direction (X) so that the battery (4) can enter the compartment (1) from the outside or leave the compartment (1) to the outside. The clamping component (2) can also move along the second direction (Y) to clamp and fix the battery (4) to the compartment (1). The clamping component (2) includes a roller (22) for engaging with the surface (41) of the battery (4).

2. The battery locking device according to claim 1, characterized in that, The compartment (1) includes a base plate (11) for supporting the battery (4). The plane of the base plate (11) in contact with the battery (4) has a set angle α with the second direction (Y), and the angle α is 5°≤α≤45°.

3. The battery locking device according to claim 2, characterized in that, The silo body (1) also includes a top plate (12); During the movement of the clamping member (2) along the second direction (Y), the roller (22) is used to abut against the battery (4), and the roller (22) also abuts against the top plate (12).

4. The battery locking device according to claim 3, characterized in that, The chamber (1) also includes a chute (131) extending along the second direction (Y). The clamping component (2) also includes a rotating shaft (23) rotatably connected to the roller (22); The rotating shaft (23) passes through the slide groove (131).

5. The battery locking device according to claim 4, characterized in that, A limiting part (132) is provided at one end of the slide (131) pointing in the second direction (Y); The rotating shaft (23) can abut against the limiting part (132) to restrict the movement of the pressing member (2) along the second direction (Y).

6. The battery locking device according to claim 4 or 5, characterized in that, The clamping component (2) also includes a frame (21); The frame (21) is movably connected to the compartment (1). The rotating shaft (23) is rotatably connected to the frame (21).

7. The battery locking device according to claim 6, characterized in that, The battery locking device also includes an elastic element (3), one end of which is connected to the top plate (12), and the other end of which is connected to the frame (21).

8. The battery locking device according to claim 7, characterized in that, The elastic element (3) is a spring; The top plate (12) is provided with a first recess (121), and the first end (31) of the spring is located in the first recess (121); The first recess (121) is provided with a first protrusion (122), and the first end (31) of the spring is sleeved on the first protrusion (122).

9. The battery locking device according to claim 8, characterized in that, The frame (21) is provided with a second recess (211), and the second end (32) of the spring is located in the second recess (211); The second recess (211) is provided with a second protrusion (212), and the second end (32) of the spring is sleeved on the second protrusion (212).

10. The battery locking device according to claim 9, characterized in that, The top plate (12) is also provided with a boss (123) extending into the interior of the compartment (1). The first recess (121) is provided on the side of the boss (123) facing the second recess (211).

11. The battery locking device according to claim 10, characterized in that, The frame (21) is also provided with a hollow part (213); When the frame (21) moves along the first direction (X), at least a portion of the boss (123) is located inside the hollow portion (213).

12. The battery locking device according to claim 4 or 5, characterized in that, The compartment (1) also includes a first side plate (13); The groove (131) is formed on the first side plate (13); The pressing component (2) further includes a limiting component (24), which passes through the slide groove (131) to the side of the first side plate (13) away from the pressing component (2); The limiting member (24) can abut against the first side plate (13) to restrict the movement of the pressing member (2) in the third direction (Z).

13. The battery locking device according to claim 12, characterized in that, The limiting component (24) is a bolt assembly that passes through and connects to the rotating shaft (23); At least a portion of the bolt assembly is located on the side of the first side plate (13) away from the clamping member (2) and abuts against the first side plate (13).

14. The battery locking device according to claim 13, characterized in that, The compartment (1) also includes a second side plate (14); The second side plate (14) is located on the side of the first side plate (13) away from the clamping member (2); The second side plate (14) has a through groove (141); The bolt assembly extends from the groove (131) into the through groove (141).

15. The battery locking device according to any one of claims 1-5, characterized in that, The compartment (1) also includes a retaining member (15); The baffle (15) is used to block the battery (4) from entering the compartment (1) from the outside.

16. An electric vehicle, characterized in that, The electric vehicle includes: Vehicle body; A battery locking device, wherein the battery locking device is installed on the vehicle body, and the battery locking device is the battery locking device according to any one of claims 1-15; Battery (4); The battery (4) is installed in the compartment (1).

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