Locking mechanism for replaceable battery, and electric device

Abstract

The present disclosure relates to a locking mechanism for a replaceable battery, and an electric device. The locking mechanism for a replaceable battery comprises: a base (1), which is provided with a mounting cavity; a driving component (2), which is at least partially arranged in the mounting cavity and is configured to be rotatable relative to the base (1); and at least two locking screws (3), which are at least partially arranged in the mounting cavity and are configured to be driven by the driving component (2) to move in the axial direction of the locking screws (3), so as to retract into the base (1) to lock a battery (10) to a bearing component (9) for bearing the battery (10) or protrude from the base (1) to unlock the battery (10) from the bearing component (9).

Description

Locking mechanism and power-consuming device for replaceable batteries

[0001] The present disclosure is based on and claims priority to an application with CN application number CN202410166920.4 and filing date February 6, 2024. The disclosure of the CN application is hereby incorporated into the present disclosure as a whole. Technical Field

[0002] The present disclosure relates to the field of vehicle battery replacement, and in particular, to a locking mechanism and an electrical device for a replaceable battery. Background Art

[0003] In some solutions, the electrical device includes a replaceable battery, which is detachably mounted on a supporting component of the electrical device. Some existing connection structures for connecting the replaceable battery and the supporting component have the disadvantage of being unstable. Summary of the Invention

[0004] The present disclosure aims to provide a locking mechanism for a replaceable battery and an electrical device, so as to improve the problem of an unstable connection structure between a replaceable battery and a supporting component existing in the related art.

[0005] According to one aspect of an embodiment of the present disclosure, the present disclosure provides a locking mechanism for a replaceable battery, the locking mechanism comprising:

[0006] A base having a mounting cavity;

[0007] a driving member at least partially disposed in the mounting cavity and configured to be rotatable relative to the base; and

[0008] At least two locking screws are at least partially disposed in the mounting cavity and are configured to move axially along the locking screws under the drive of the driving component to retract into the base to lock the battery and the supporting component supporting the battery or extend to the outside of the base to unlock the battery and the supporting component.

[0009] In some embodiments,

[0010] The drive member is configured to engage with at least two locking screws simultaneously; or

[0011] The drive component is configured to be movable relative to the base to switch from driving engagement with one locking screw to driving engagement with the other locking screw.

[0012] In some embodiments, a transmission portion is further included, and the transmission portion is configured to transmission-connect the at least two locking screws to the driving component simultaneously or transmission-connect the at least two locking screws to the driving component one by one.

[0013] In some embodiments, the transmission portion includes:

[0014] The first transmission wheel is in transmission connection with the driving component so as to rotate under the drive of the driving component;

[0015] at least two second transmission wheels, arranged along the circumference of the first transmission wheel and configured to be drivably engaged with the first transmission wheel;

[0016] At least two screw sleeves are arranged in a one-to-one correspondence with at least two second transmission wheels. The screw sleeves are connected to the corresponding second transmission wheels and are configured to rotate with the second transmission wheels. The screw sleeves are arranged in a one-to-one correspondence with the locking screws. The locking screws are provided with threaded sections that cooperate with the screw sleeve threads. The locking screws are configured to move along the axial direction of the locking screws as the screw sleeves rotate to lock or unlock the batteries and the load-bearing components.

[0017] In some embodiments, the first transmission wheel includes a first gear, the second transmission wheel includes a second gear, and the first gear and the second gear are meshed to achieve transmission cooperation.

[0018] In some embodiments, two second transmission wheels adjacent to the first transmission wheel in the axial direction are spaced apart in the axial direction, and the first transmission wheel is configured to move relative to the first transmission wheel in the axial direction of the first transmission wheel to switch from transmission cooperation with one second transmission wheel to transmission cooperation with the other second transmission wheel.

[0019] In some embodiments, the driving component is configured to be movable relative to the base along the axial direction of the first transmission wheel. The base is provided with a disassembly tool interface compatible with a disassembly tool for removing or installing the battery. The disassembly tool interface is provided at the outer end of the driving component along the axial direction of the first transmission wheel. The disassembly tool interface allows the disassembly tool to be inserted to be connected with the driving component and push the driving component to drive the first transmission wheel to move along the axial direction of the first transmission wheel.

[0020] In some embodiments, the locking mechanism further includes an elastic component that pushes the first transmission wheel in the axial direction of the first transmission wheel, and the elastic component is configured to push the first transmission wheel to a position where it is not in transmission engagement with any second transmission wheel.

[0021] In some embodiments, the locking mechanism further includes an elastic component that pushes the first transmission wheel in the axial direction of the first transmission wheel, and the elastic component is configured to push the first transmission wheel to a position for transmission engagement with at least one second transmission wheel.

[0022] In some embodiments, an anti-rotation component is also included, which is engaged with the driving component to prevent rotation. The anti-rotation component can move relative to the base to switch between a first state of engaging with the base to prevent rotation and a second state of being rotatable relative to the base. The anti-rotation component is arranged at the disassembly and assembly tool interface so as to be pushed to the second state by the disassembly and assembly tool when the disassembly and assembly tool is inserted into the disassembly and assembly tool interface.

[0023] In some embodiments, a rotation-stopping protrusion is provided on one of the anti-rotation component and the base, and a slot matching the rotation-stopping protrusion is provided on the other one.

[0024] According to another aspect of the present disclosure, an electrical device is further provided, and the electrical device includes the locking mechanism of the replaceable battery described above.

[0025] By applying the technical solution of the present application, a driving component can drive at least two locking screws to move, and each disassembly tool can realize the locking and unlocking of multiple locking screws. Therefore, the locking mechanism of this embodiment can be provided with more locking screws, which is beneficial to improving the problem of unstable connection structure between the battery and the supporting component existing in the prior art.

[0026] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present disclosure. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0028] FIG1 shows a schematic structural diagram of an electric device disclosed in some embodiments of the present application;

[0029] FIG2 shows a schematic diagram of the exploded structure of a battery disclosed in some embodiments of the present application;

[0030] FIG3 shows a schematic structural diagram of a battery cell disclosed in some embodiments of the present application;

[0031] FIG4 is a schematic diagram showing a three-dimensional structure of a locking mechanism of a replaceable battery disclosed in some embodiments of the present application;

[0032] FIG5 is a schematic cross-sectional view of a locking mechanism of a replaceable battery disclosed in some embodiments of the present application;

[0033] FIG6 is a schematic diagram showing a three-dimensional structure of a locking mechanism of a replaceable battery disclosed in some other embodiments of the present application;

[0034] FIG7 shows an exploded view of a locking mechanism of a replaceable battery disclosed in some other embodiments of the present application;

[0035] FIG8 is a schematic structural diagram of a locking screw of a locking mechanism for a replaceable battery disclosed in other embodiments of the present application;

[0036] FIG9 shows a schematic cross-sectional structural diagram of a locking mechanism of a replaceable battery disclosed in some embodiments of the present application. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present disclosure.

[0038] In the description of this application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inside", "outside", etc., indicating directions or positional relationships, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on this application. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. "Vertical" is not strictly perpendicular, but is within the allowable error range. "Parallel" is not strictly parallel, but is within the allowable error range.

[0039] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of this application. In the description of this application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0040] Further, " scope " disclosed in the present application is limited in the form of lower limit and upper limit, and given range is limited by selecting a lower limit and an upper limit, and selected lower limit and upper limit define the boundary of special scope. The scope that this mode limits can be to include end value or not include end value, and can be arbitrarily combined, and promptly any lower limit can form a scope with any upper limit combination. For example, if the scope of 60-120 and 80-110 is listed for specific parameter, it is understood that the scope of 60-110 and 80-120 is also expected. In addition, if the minimum range value 1 and 2 listed, and if the maximum range value 3,4 and 5 are listed, then the following scope can all be expected: 1-3, 1-4, 1-5, 2-3, 2-4 and 2-5. In the present application, unless otherwise specified, numerical range " ab " represents the abbreviation of any real number combination between a and b, and wherein a and b are all real numbers. For example, a numerical range of "0-5" indicates that all real numbers between "0-5" are listed herein, and "0-5" is simply an abbreviation for these numerical combinations. Furthermore, when a parameter is expressed as an integer ≥ 2, this is equivalent to disclosing that the parameter is, for example, an integer of 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0041] Unless otherwise specified, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution.

[0042] Unless otherwise specified, all technical features and optional technical features of this application can be combined with each other to form a new technical solution.

[0043] Unless otherwise specified, all steps of the present application may be performed sequentially or randomly, preferably sequentially. For example, the method includes steps (a) and (b), indicating that the method may include steps (a) and (b) performed sequentially, or may include steps (b) and (a) performed sequentially. For example, the method may further include step (c), indicating that step (c) may be added to the method in any order, for example, the method may include steps (a), (b) and (c), or may include steps (a), (c) and (b), or may include steps (c), (a) and (b), etc.

[0044] Unless otherwise specified, the terms "include" and "comprising" used in this application may be open-ended or closed-ended. For example, "include" and "comprising" may mean that other components not listed may also be included or that only the listed components are included.

[0045] Unless otherwise specified, the term "or" is used in this application to be inclusive. For example, the phrase "A or B" means "A, B, or both A and B." More specifically, the condition "A or B" is satisfied if any of the following conditions are met: A is true (or exists) and B is false (or does not exist); A is false (or does not exist) and B is true (or exists); or both A and B are true (or exist).

[0046] Currently, market developments indicate that power batteries are becoming increasingly widely used. They are not only used in energy storage systems such as hydropower, thermal, wind, and solar power plants, but are also widely used in electric vehicles like electric bicycles, electric motorcycles, and electric vehicles, as well as in military equipment and aerospace. As power battery applications continue to expand, market demand is also growing.

[0047] FIG1 shows a schematic structural diagram of an electric device that uses a battery as a power source; as shown in FIG1 , the electric device of this embodiment includes a vehicle 1000, which may be a pure electric vehicle, a hybrid electric vehicle, or an extended-range vehicle, etc. A battery pack 100 is provided inside the vehicle 1000, and the battery pack 100 may be provided at the bottom, head, or tail of the vehicle 1000. The battery pack 100 may be used to power the vehicle 1000, for example, the battery pack 100 may serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300, and the controller 200 is used to control the battery pack 100 to power the motor 300, for example, for starting, navigating, and operating power requirements of the vehicle 1000 during driving.

[0048] In some embodiments of the present application, the battery pack 100 can not only serve as the operating power source of the vehicle 1000, but also serve as the driving power source of the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0049] Please refer to Figure 2, which is an exploded view of a battery pack 100 provided in some embodiments of the present application. The battery pack 100 includes a case 110 and a battery module disposed in the case 110. The battery module includes a plurality of battery cells 120, and the battery cells 120 are accommodated in the case 110. The case 110 is used to provide a storage space for the battery cells 120, and the case 110 can adopt a variety of structures. In some embodiments, the case 110 may include a first portion 111 and a second portion 112, the first portion 111 and the second portion 112 covering each other, and the first portion 111 and the second portion 112 jointly define a storage space for accommodating the battery cells 120. The second portion 112 can be a hollow structure with one end open, and the first portion 111 can be a plate-like structure. The first portion 111 covers the open side of the second portion 112, so that the first portion 111 and the second portion 112 jointly define a storage space. The first portion 111 and the second portion 112 can also be hollow structures with one end open, with the open side of the first portion 111 covering the open side of the second portion 112. Of course, the box 110 formed by the first portion 111 and the second portion 112 can have various shapes, such as a cylinder, a rectangular parallelepiped, etc.

[0050] In the battery pack 100, there may be multiple battery cells 120, and the multiple battery cells 120 may be connected in series, in parallel, or in a hybrid connection. A hybrid connection refers to a combination of series and parallel connections among the multiple battery cells 120. The multiple battery cells 120 may be directly connected in series, in parallel, or in a hybrid connection, and then the entire battery pack 120 may be housed within the housing 110. Alternatively, the battery pack 100 may be constructed by first connecting multiple battery cells 120 in series, in parallel, or in a hybrid connection to form a battery module, which is then connected in series, in parallel, or in a hybrid connection to form a complete battery module, and then housed within the housing 110. The battery pack 100 may also include other structures, such as a busbar assembly for electrically connecting the multiple battery cells 120.

[0051] Each battery cell 120 may be a secondary battery or a primary battery, a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited thereto. The battery cell 120 may be cylindrical, flat, rectangular, or in other shapes.

[0052] Please refer to Figure 3, which is a schematic diagram of the exploded structure of a battery cell 120 provided in some embodiments of the present application. A battery cell 120 is the smallest unit that makes up a battery pack 100. As shown in Figure 3, a battery cell 120 includes an end cap 121, a housing 122, a cell assembly 123, and other functional components.

[0053] The end cap 121 is a component that covers the opening of the housing 122 to isolate the internal environment of the battery cell 120 from the external environment. The shape of the end cap 121 can be adapted to the shape of the housing 122 to fit the housing 122. Optionally, the end cap 121 can be made of a material with a certain degree of hardness and strength, such as an aluminum alloy. This prevents the end cap 121 from deforming under pressure or collision, providing the battery cell 120 with greater structural strength and improved safety. The end cap 121 can be provided with functional components such as electrode terminals 121a. The electrode terminals 121a can be used to electrically connect to the battery cell assembly 123 to transfer electrical energy to or from the battery cell 120. In some embodiments, the end cap 121 can also be provided with a pressure relief mechanism to release internal pressure when the internal pressure or temperature of the battery cell 120 reaches a threshold. The end cap 121 can be made of a variety of materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, and plastic, and this is not particularly limited in this embodiment of the present application. In some embodiments, an insulating member may be provided inside the end cap 121 to isolate the electrical connection components in the housing 122 from the end cap 121 to reduce the risk of short circuit.

[0054] The housing 122 is a component used to cooperate with the end cap 121 to form the internal environment of the battery cell 120, wherein the formed internal environment can be used to accommodate the battery cell assembly 123, electrolyte, and other components. The housing 122 and the end cap 121 can be independent components. An opening can be provided on the housing 122, and the end cap 121 is closed at the opening to form the internal environment of the battery cell 120. Without limitation, the end cap 121 and the housing 122 can also be integrated. Specifically, the end cap 121 and the housing 122 can form a common connection surface before other components are inserted into the housing. When the interior of the housing 122 needs to be encapsulated, the end cap 121 is closed over the housing 122. The housing 122 can have a variety of shapes and sizes, such as a rectangular parallelepiped, a cylindrical shape, a hexagonal prism, etc. Specifically, the shape of the housing 122 can be determined according to the specific shape and size of the battery cell assembly 123. The shell 122 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and the embodiment of the present application does not impose any special restrictions on this.

[0055] The cell assembly 123 is the component within the battery cell 100 where the electrochemical reaction occurs. The housing 122 may contain one or more cell assemblies 123. These cell assemblies 123 are primarily formed by winding or stacking electrode sheets, including positive and negative electrodes, with a separator typically positioned between them.

[0056] The electrode sheet mainly consists of a thin sheet of current collector and an active material coated on the current collector. The parts of the positive electrode sheet (cathode electrode sheet) and the negative electrode sheet (anode electrode sheet) with active materials constitute the main body of the battery cell assembly, and the parts of the positive electrode sheet and the negative electrode sheet without active materials each constitute the tab 123a. The positive electrode tab and the negative electrode tab can be located together at one end of the main body or respectively at both ends of the main body. During the charge and discharge process of the battery pack 100, the positive electrode active material and the negative electrode active material react with the electrolyte, and the tab 123a connects the electrode terminal to form a current loop.

[0057] In some embodiments, the battery and the load-bearing component of the electrical device are connected by bolts and nuts compatible with the bolts. One of the bolts and nuts is fixed to the load-bearing component (e.g., a beam) of the electrical device (e.g., a vehicle). After replacing the new battery, the other of the bolts and nuts is tightened so that the nuts and bolts fix the battery to the load-bearing component.

[0058] In the technical solution of fixing the battery to the supporting component by nuts and bolts, the bolts and nuts need to be aligned, and the operation precision is required to be high. Once the bolts and nuts are not aligned, the fasteners (nuts or bolts) installed on the supporting component will likely be damaged. Once the fasteners are damaged, the electrical device needs to be repaired, so the maintenance cost is relatively high.

[0059] In other embodiments, as shown in Figures 4 and 5 , a locking mechanism for connecting a battery 10 and a supporting component 9 includes a base 1 having a mounting cavity, a locking screw 3 having one end inserted into the mounting cavity of the base 1, and a driving component 2 configured to drive the locking screw 3 to extend out of or retract into the mounting cavity of the base 1. The locking screw 3 includes a rod body 31, a threaded section 32 located within the mounting cavity of the base 1 and connected to the rod body 31, and a stopper 33 provided at one end of the rod body 31 distal from the threaded section 32. The stopper 33 protrudes radially from the rod body 31, so that after the locking screw 3 retracts into the base 1, the supporting component 9 and the battery 10 are clamped between the stopper 33 and the base 1, thereby locking the supporting component 9 and the battery 10.

[0060] A through hole is provided on the supporting component 9 for allowing the locking screw 3 to pass through. The cross section of the through hole is adapted to the stop portion 33. The locking screw 3 is rotatably arranged in the through hole so that the stop portion 33 can switch between a first position in which it can pass through the above-mentioned through hole and a second position in which it is hooked on the edge of the through hole.

[0061] The locking screw 3 also includes a guide pin 34 provided on the rod body 31. The base 1 is provided with a guide groove 13 that extends helically along the circumference of the locking screw 3 and is compatible with the guide pin 34. As the locking screw 3 is extended or retracted into the base 1, the guide pin 34 moves along the guide groove 13, thereby causing the locking screw 3 to rotate, thereby switching the stop portion 33 between a first position in which it can pass through the through hole and a second position in which it is engaged with the edge of the through hole.

[0062] The driving component 2 includes a screw sleeve rotatably arranged relative to the base 1, and the screw sleeve is adapted to the threaded section 32 of the locking screw 3. During the rotation of the screw sleeve, the locking screw 3 is driven to move along the axial direction of the locking screw 3, so that the locking screw 3 extends to the outside of the base 1 or retracts to the inside of the base 1.

[0063] The drive component 2 also includes a connection portion connected to the threaded sleeve and configured to engage with a disassembly tool that rotates the threaded sleeve. The disassembly tool and the connection portion engage with each other, and the disassembly tool and the connection portion rotate synchronously, thereby driving the threaded sleeve to rotate. The rotation of the threaded sleeve drives the locking screw 3 to move axially along the locking screw 3.

[0064] The driving component 2 and the locking screw 3 are respectively inserted into the mounting cavity of the base 1 from opposite ends of the base 1. The screw sleeve of the driving component 2 is located at the end of the driving component 2 located in the mounting cavity, and the connecting portion of the driving component 2 is located outside the screw sleeve. The threaded section 31 of the locking screw 3 is located in the mounting cavity and is threadedly engaged with the screw sleeve of the driving component 2.

[0065] The locking mechanism also includes an anti-rotation component 5, which engages with the drive component 2 to prevent rotation. One of the anti-rotation component 5 and the base 1 is provided with a rotation-stopping protrusion, and the other is provided with a slot that mates with the rotation-stopping protrusion. The anti-rotation component 5 is movable relative to the base 1 to switch between a first position in which it is rotationally engaged with the base 1 and a second position in which it is rotatable relative to the base 1. When the anti-rotation component 5 is in the first position, the rotation-stopping protrusion is embedded in the slot. When the anti-rotation component 5 is in the second position, the rotation-stopping protrusion is disengaged from the slot.

[0066] The anti-rotation component 5 in the first state is in anti-rotation cooperation with the driving component 2 and the base 1 respectively, thereby limiting the rotation of the driving component 2 relative to the base 1, which is beneficial to preventing the locking screw 3 from loosening.

[0067] The locking mechanism also includes an elastic component 7 for pushing the anti-rotation component 5 toward the first state. The anti-rotation component 5 is arranged at the entrance end of the installation cavity of the base 1 close to the driving component 2. The anti-rotation component 5 is configured to move toward the inside of the installation cavity to switch from the first state to the second state. Therefore, during the process of cooperation between the disassembly and assembly tool and the connecting part of the driving component, the anti-rotation component 5 can be switched to the second state.

[0068] The locking screw 3 must pass from top to bottom through the support member 9 and battery 10 and into the interior of the base 1. Therefore, the outer diameter of the thread at the bottom of the locking screw 3 where it mates with the sleeve of the drive member 2 is greatly limited, seriously affecting the service life of the locking screw 3. Experimental results show that the thread at the point where the threaded section 32 at the bottom of the locking screw 3 mates with the sleeve is a weak point and is prone to breakage.

[0069] In this embodiment, one locking screw 3 is correspondingly provided for one driving component 2, and the disassembly and assembly tool includes a motor for providing power and a connector connected to the motor and engaged with the connection part of the driving component 2 for preventing rotation. The disassembly and assembly tool is large in size and requires a certain working space, so the number of locking screws 3 arranged is limited, and there are certain defects in the stability of the connection of the locking mechanism.

[0070] In order to improve the above-mentioned problem, referring to Figures 6 and 7 , the locking mechanism of the replaceable battery in other embodiments of the present application includes a base 1 , a driving component 2 and at least two locking screws 3 .

[0071] The base 1 is provided with a mounting cavity. At least a portion of the driving component 2 is disposed in the mounting cavity, and the driving component 2 is configured to be rotatable relative to the base 1 .

[0072] Each locking screw 3 is at least partially disposed in the mounting cavity and is configured to move axially along the locking screw 3 under the drive of the driving component 2, so as to retract into the base 1 to lock the battery 10 and the supporting component 9 supporting the battery 10, or extend to the outside of the base 1 to unlock the battery 10 and the supporting component 9.

[0073] In this embodiment, a driving component 2 can drive at least two locking screws 3 to move, and each disassembly tool can realize the locking and unlocking of multiple locking screws 3. Therefore, the locking mechanism of this embodiment can be provided with more locking screws 3, which is beneficial to improve the problem of unstable connection structure between the battery 10 and the supporting component 9 in the prior art.

[0074] In some embodiments, the driving component 2 is configured to simultaneously cooperate with at least two locking screws 3; one driving component 2 can simultaneously realize the locking and unlocking of multiple locking screws 3, which is conducive to improving the efficiency of replacing batteries for electrical devices.

[0075] In other embodiments, the driving component 2 is configured to be movable relative to the base 1 so as to switch from transmission cooperation with one locking screw 3 to transmission cooperation with another locking screw 3. The driving component 2 only locks or unlocks one locking screw 3, and can adjust the locking torque for different locking screws 3, so that the locking torque of each locking screw 3 can meet the requirements and achieve the balance of the locking torque of multiple locking screws 3.

[0076] The locking mechanism also includes a transmission unit 4, which is configured to simultaneously drive-connect at least two locking screws 3 to the drive component 2 or to drive-connect at least two locking screws 3 to the drive component 2 one at a time. The drive component 2 locks or unlocks only one locking screw 3 at a time, and the locking torque can be adjusted for each locking screw 3, thereby ensuring that the locking torque of each locking screw 3 meets the required level and achieving a balanced locking torque across the multiple locking screws 3.

[0077] In some embodiments, the transmission part 4 includes a first transmission wheel 41 , at least two second transmission wheels 42 and at least two screw sleeves 43 .

[0078] The first transmission wheel 41 is in transmission connection with the driving component 2 so as to rotate under the drive of the driving component 2. At least two second transmission wheels 42 are arranged along the circumference of the first transmission wheel 41 and are configured to be transmission-matched with the first transmission wheel 41.

[0079] At least two screw sleeves 43 are arranged in a one-to-one correspondence with at least two second transmission wheels 42. The screw sleeves 43 are connected to the corresponding second transmission wheels 42 and are configured to rotate with the second transmission wheels 42. The screw sleeves 43 are arranged in a one-to-one correspondence with the locking screw 3. The locking screw 3 is provided with a threaded section 31 that is threadedly matched with the screw sleeve 5 and is configured to move along the axial direction of the locking screw 3 as the screw sleeve 43 rotates to lock or unlock the battery 10 and the carrying component 9.

[0080] In this embodiment, the driving component 2 drives the locking screw 3 to move axially along the locking screw 3 through the transmission part 4. The first transmission wheel 41 is sleeved on the driving component 2 and connected to the driving component 2 to rotate with the driving component 2. The second transmission wheel 42 is sleeved on the screw sleeve 43 and connected to the screw sleeve 43 to drive the screw sleeve 43 to rotate. During the rotation of the screw sleeve 43, the locking screw 3 is driven to move axially along the locking screw 3 to retract into the base 1 to lock the battery 10 and the supporting component 9 supporting the battery 10, or to extend to the outside of the base 1 to unlock the battery 10 and the supporting component 9. The transmission part 4 has the characteristics of simple structure, reliable connection, and high transmission efficiency.

[0081] In this embodiment, the transmission part 4 is disposed in the installation cavity of the base 1 , and the locking screw 3 and the driving component are respectively inserted into the installation cavity of the base 1 from opposite ends of the base 1 .

[0082] In some embodiments, two second transmission wheels 42 adjacent to each other in the axial direction of the first transmission wheel 41 are spaced apart in the axial direction, and the first transmission wheel 41 is configured to move axially relative to the first transmission wheel 6 to switch from transmission cooperation with one second transmission wheel 42 to transmission cooperation with another second transmission wheel 42, thereby enabling the driving component 2 to drive at least two locking screws 3 one by one, and the locking torque can be adjusted for different locking screws 3, so that the locking torque of each locking screw 3 can meet the requirements and achieve the balance of the locking torque of multiple locking screws 3.

[0083] The drive component 2 is configured to be movable relative to the base 1 along the axial direction of the first transmission wheel 41. The outer end of the base 1 along the axial direction of the first transmission wheel 41 is provided with a disassembly tool interface 14. The disassembly tool interface 14 allows a disassembly tool to be inserted to achieve transmission connection with the drive component 12 and push the drive component 2 to drive the first transmission wheel 6 along the axial direction, thereby driving the first transmission wheel 41 to switch from transmission cooperation with one second transmission wheel 42 to transmission cooperation with the other second transmission wheel 42. Therefore, by pressing the drive component 2, the first transmission wheel 41 can switch to the second transmission wheel 42 for transmission cooperation, thereby achieving the switching of the second transmission wheel that cooperates with the first transmission wheel 41 using a simple structure. In some embodiments, the disassembly tool pushes the drive component 2 to move along the axial direction of the first transmission wheel 41, thereby driving the first transmission wheel 41 to switch from transmission cooperation with one second transmission wheel 42 to transmission cooperation with the other second transmission wheel 42.

[0084] In some embodiments, the first transmission wheel 41 includes a first gear, and the second transmission wheel 42 includes a second gear. The first gear and the second gear are engaged to achieve transmission coordination. By pressing the driving component 2, the second transmission wheel 42 engaged with the first transmission wheel 41 can be changed, which is conducive to realizing the switching of the first transmission wheel 41 to the second transmission wheel with different transmission coordination through a simple structure.

[0085] The locking mechanism further includes an elastic component 7 disposed in the mounting cavity for pushing the driving component 2 along the axial direction of the first transmission wheel 41 .

[0086] In some embodiments, the elastic component 7 is configured to push the drive component 7 to a position where the first transmission wheel 41 does not engage (mesh) with any of the second transmission wheels 42. When there is no external force pressing on the drive component 2, the first transmission wheel 41 does not transmit to any of the second transmission wheels 42. After the locking screw 3 locks the supporting component 9 and the battery 10, accidental rotation of the drive component 2 will not cause the locking screw 3 to loosen. The elastic component 7 serves as a reset. When it is necessary to drive the locking screw 3 to lock or loosen, the drive component 2 and the first transmission wheel 41 can be moved to engage the first transmission wheel 41 with the corresponding second transmission wheel 42. By moving the drive component 2 and the first transmission wheel 41, the first transmission wheel 41 can be engaged with different second transmission wheels respectively to drive different locking screws 3 to rotate.

[0087] In other embodiments, the elastic component 7 is configured to push the driving component 7 to a position where the first transmission wheel 41 is in transmission engagement with at least one second transmission wheel 42. In still other embodiments, the elastic component 7 is configured to push the driving component 2 to a position where the first transmission wheel 41 is in transmission engagement with two second transmission wheels 42 axially adjacent to the first transmission wheel 41, so that the first transmission wheel 41 simultaneously drives at least two second transmission wheels 42, which also helps prevent the at least two locking screws 3 from loosening after the driving component 2 is locked.

[0088] As shown in Figures 7 to 9 , the locking mechanism also includes an anti-rotation component 5, which engages with the drive component 2 to prevent rotation. The anti-rotation component 5 is movable relative to the base 1 to switch between a first position, in which it prevents rotation with the base 1, and a second position, in which it is rotatable relative to the base 1. The anti-rotation component 5 is positioned at the disassembly tool interface 14 so that when the disassembly tool is inserted into the disassembly tool interface 14, it is pushed into the second position. Insertion of the disassembly tool into the disassembly tool interface 14 simultaneously pushes the anti-rotation component 5 into the second position, which allows the drive component 2 to rotate. This simplifies the process and improves battery replacement efficiency.

[0089] The elastic component 7 is configured to push the anti-rotation component 5 toward the first state. The anti-rotation component 5 is provided at the disassembly and assembly tool interface at the outer end of the installation cavity along the axial direction of the first transmission wheel 41. The anti-rotation component 5 is configured to move toward the inside of the installation cavity to switch from the first state to the second state. Therefore, during the process of the disassembly and assembly tool cooperating with the connecting portion 21 of the driving component 2, the anti-rotation component 5 can be switched to the second state.

[0090] One of the anti-rotation component 5 and the base 1 is provided with a rotation-stopping protrusion, and the other is provided with a slot that matches the rotation-stopping protrusion. When the anti-rotation component 5 is in a first state, the rotation-stopping protrusion is embedded in the slot to prevent the anti-rotation component 5 from rotating relative to the base 1. When the anti-rotation component 5 is in a second state, the rotation-stopping protrusion is disengaged from the slot.

[0091] The anti-rotation component 5 in the first state is respectively engaged with the driving component 2 and the base 1 to prevent rotation, thereby limiting the rotation of the driving component 2 relative to the base 1. The elastic component 7 pushes the first transmission wheel 41 to engage with the one or more second transmission wheels 42. After the driving component 2 is restricted from rotating, it is helpful to prevent the locking screw 3 from loosening.

[0092] In this embodiment, the driving component 2 includes a connecting portion 21 for cooperating with a disassembly tool, a transmission wheel mounting portion 22 for mounting the first transmission wheel 41 , and an elastic component mounting portion 23 for mounting the elastic component 7 .

[0093] The connecting portion 21, the transmission wheel mounting portion 22 and the elastic component mounting portion 23 are sequentially arranged and connected together along the axial direction of the first transmission wheel 41. The connecting portion 21 is located on the side of the transmission wheel mounting portion 22 close to the disassembly tool interface, and the elastic component mounting portion 23 is located on the inner side of the transmission wheel mounting portion 22.

[0094] The outer diameter of the transmission wheel mounting portion 22 is larger than that of the connecting portion 21 and the elastic component mounting portion 23. One end of the elastic component 7 abuts the transition step at the junction of the transmission wheel mounting portion 22 and the elastic component mounting portion 23, while the other end abuts the bottom of the mounting cavity. A washer 8 is also positioned between the elastic component 7 and the bottom of the mounting cavity.

[0095] The locking mechanism further includes a tubular component 6 , which is sleeved on the connecting portion 21 . One end of the tubular component 6 abuts against the anti-rotation component 5 , and the other end abuts against the transition step at the junction of the connecting portion 21 and the transmission wheel mounting portion 22 .

[0096] After the disassembly tool is inserted into the disassembly tool structure, the anti-rotation component 5 is pushed to switch it to the second state. The disassembly tool is further pushed inward so that the anti-rotation component 5 pushes the driving component 2 toward the inside of the base 1 through the tubular component 6, so that the first transmission wheel 41 engages with a second transmission wheel 42. After completing the tightening of one locking screw 3, the driving component 2 can be pushed toward the inside of the base 1 again to engage the second transmission wheel 41 with another second transmission wheel 42, and then the locking of the other locking screw 3 is completed.

[0097] In some embodiments, the base 1 includes a base body 11 and a cover plate 12. The base 11 has a cavity for accommodating the transmission unit 4. One end of the cavity is open, and the cover plate 12 is provided over the open end to form a mounting cavity. The disassembly tool interface is provided on the cover plate 12.

[0098] The locking screw is arranged at one end of the base 1 away from the disassembly and assembly interface, and a through hole 91 is provided on the supporting component 9 to allow the locking screw 3 to pass through. The cross-section of the through hole 91 is adapted to the stop portion 33, and the locking screw 3 is rotatably arranged in the through hole so that the stop portion 33 can switch between a first position in which it can pass through the above-mentioned through hole and a second position in which it is hooked on the edge of the through hole.

[0099] The locking screw 3 further includes a guide pin 34 disposed on the rod body 31. The base 1 is provided with a guide groove 13 that extends helically along the circumference of the locking screw 3 and is adapted to fit the guide pin 34. As the locking screw 3 is extended or retracted into the base 1, the guide pin 34 moves along the guide groove 13, thereby causing the locking screw 3 to rotate, thereby switching the stopper 33 between a first position in which it can pass through the through hole and a second position in which it is engaged with the edge of the through hole 91.

[0100] When the locking screw 3 retracts into the base 1 , it is hooked on the edge stop 33 of the passage 91 and presses the supporting component 9 and the battery 10 against the base 1 .

[0101] The above description is merely an exemplary embodiment of the present disclosure and is not intended to limit the present disclosure. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present disclosure shall be included in the scope of protection of the present disclosure.

Claims

1. A locking mechanism for a replaceable battery, comprising: A base (1) is provided with a mounting cavity; a driving component (2), at least partially disposed in the mounting cavity and configured to be rotatable relative to the base (1); as well as At least two locking screws (3) are at least partially arranged in the installation cavity and are configured to move along the axial direction of the locking screws (3) under the drive of the driving component (2) to retract into the base (1) to lock the battery (10) and the supporting component (9) supporting the battery (10) or extend to the outside of the base (1) to unlock the battery (10) and the supporting component (9).

2. The locking mechanism of the replaceable battery according to claim 1, wherein: The driving component (2) is configured to simultaneously engage with at least two locking screws (3); or The driving component (2) is configured to be movable relative to the base (1) so as to switch from transmission cooperation with one locking screw (3) to transmission cooperation with another locking screw (3).

3. The locking mechanism of the replaceable battery according to claim 1 or 2 further includes a transmission part (4), which is configured to simultaneously transmission-connect at least two of the locking screws (3) to the driving component (2) or transmission-connect at least two of the locking screws (3) to the driving component (2) one by one.

4. The locking mechanism of a replaceable battery according to claim 3, wherein the transmission part (4) comprises: A first transmission wheel (41) is in transmission connection with the driving component (2) so as to rotate under the drive of the driving component (2); At least two second transmission wheels (42) are arranged along the circumference of the first transmission wheel (41) and are configured to be transmission-matched with the first transmission wheel (41); At least two screw sleeves (43) are arranged in a one-to-one correspondence with at least two second transmission wheels (42), the screw sleeves (43) are connected to the corresponding second transmission wheels (42) and are configured to rotate with the second transmission wheels (42), the screw sleeves (43) are arranged in a one-to-one correspondence with the locking screw (3), the locking screw (3) is provided with a threaded section (31) that is threadedly matched with the screw sleeve (5), and the locking screw (3) is configured to move along the axial direction of the locking screw (3) as the screw sleeve (43) rotates to lock or unlock the battery (10) and the bearing component (9).

5. The locking mechanism of the replaceable battery according to claim 4, wherein the first transmission wheel (41) includes a first gear, the second transmission wheel (42) includes a second gear, and the first gear and the second gear are engaged to achieve transmission cooperation.

6. The locking mechanism of a replaceable battery according to claim 4 or 5, wherein two second transmission wheels (42) adjacent to each other in the axial direction of the first transmission wheel (41) are spaced apart in the axial direction, and the first transmission wheel (41) is configured to move relative to the first transmission wheel (41) along the axial direction of the first transmission wheel (41) to switch from transmission cooperation with one second transmission wheel (42) to transmission cooperation with the other second transmission wheel (42).

7. The locking mechanism of a replaceable battery according to claim 6, wherein the driving component (2) is configured to be movable relative to the base (1) along the axial direction of the first transmission wheel (41), and the base (1) is provided with a disassembly tool interface (14) adapted to a disassembly tool for removing or installing the battery, and the disassembly tool interface (14) is provided at the outer end (14) of the driving component (2) along the axial direction of the first transmission wheel (41), and the disassembly tool interface (14) allows the disassembly tool to be inserted to be connected with the driving component (2) and push the driving component (2) to drive the first transmission wheel (41) to move along the axial direction of the first transmission wheel (41).

8. The locking mechanism of the replaceable battery according to any one of claims 4 to 7, further comprising an elastic component (7) that pushes the first transmission wheel (41) along the axial direction of the first transmission wheel (41), and the elastic component (7) is configured to push the first transmission wheel (41) to a position where it does not cooperate with any of the second transmission wheels (42) in transmission.

9. The locking mechanism of the replaceable battery according to any one of claims 4 to 8, further comprising an elastic component (7) that pushes the first transmission wheel (41) along the axial direction of the first transmission wheel (41), and the elastic component (7) is configured to push the first transmission wheel (41) to a position in which it is in transmission cooperation with at least one of the second transmission wheels (42).

10. The locking mechanism of the replaceable battery according to any one of claims 7 to 9 further includes an anti-rotation component (5), wherein the anti-rotation component (5) is engaged with the driving component (2) to prevent rotation, and the anti-rotation component (5) can be moved relative to the base (1) to switch between a first state of anti-rotation engagement with the base (1) and a second state of rotation relative to the base (1), and the anti-rotation component (5) is provided at the disassembly and assembly tool interface (14) so as to be pushed to the second state by the disassembly and assembly tool when the disassembly and assembly tool is inserted into the disassembly and assembly tool interface (14).

11. The locking mechanism of a replaceable battery according to claim 10, wherein a rotation-stopping protrusion is provided on one of the anti-rotation component (5) and the base (1), and a slot adapted to the rotation-stopping protrusion is provided on the other.

12. An electrical device comprising the locking mechanism of the replaceable battery according to any one of claims 1 to 11.

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