Locking mechanism for replaceable battery and electric device

Abstract

The application relates to a replaceable battery locking mechanism and an electric device, the replaceable battery locking mechanism comprising a base (1) provided with a mounting cavity; a driving component (2) at least partially arranged in the mounting cavity and configured to be rotatable relative to the base (1); and at least two locking screws (3) at least partially arranged in the mounting cavity and configured to move along the axial direction of the locking screw (3) under the driving of the driving component (2), so as to retract into the base (1) to lock the battery (10) and a bearing component (9) bearing the battery (10), or extend to the outside of the base (1) to unlock the battery (10) and the bearing component (9).

Description

Technical Field

[0001] This invention relates to the field of vehicle battery swapping, and more specifically, to a locking mechanism and an electrical device for a replaceable battery. Background Technology

[0002] In some solutions, the electrical device includes a replaceable battery that is detachably mounted on the load-bearing component of the electrical device. However, some existing connection structures between the replaceable battery and the load-bearing component have the disadvantage of being unstable. Summary of the Invention

[0003] The present invention aims to provide a locking mechanism and an electrical device for a replaceable battery, so as to improve the problem of unstable connection structure between the replaceable battery and the load-bearing component in the related art.

[0004] According to one aspect of the present invention, the present invention provides a locking mechanism for a replaceable battery, the locking mechanism comprising:

[0005] The base has a mounting cavity;

[0006] The drive component, at least partially disposed within the mounting cavity and configured to rotatably relative to the base; and

[0007] At least two locking screws are at least partially located within the mounting cavity and configured to move axially along the locking screws under the drive of a drive member to retract into the base to lock the battery and the battery-carrying component, or to extend outward from the base to unlock the battery and the battery-carrying component.

[0008] In some embodiments,

[0009] The drive component is configured to engage simultaneously with at least two locking screws; or

[0010] The drive component is configured to be movable relative to the base to switch from engaging with one locking screw to engaging with another locking screw.

[0011] In some embodiments, the system further includes a transmission unit configured to simultaneously drive at least two locking screws to the drive component or to drive at least two locking screws one at a time to the drive component.

[0012] In some embodiments, the transmission unit includes:

[0013] The first transmission wheel is connected to the drive component for transmission, so that it rotates under the drive of the drive component;

[0014] At least two second drive wheels are arranged circumferentially along the first drive wheel and configured to be driveably engaged with the first drive wheel;

[0015] At least two threaded sleeves are provided in one-to-one correspondence with at least two second drive wheels. The threaded sleeves are connected to the corresponding second drive wheels and configured to rotate with the second drive wheels. The threaded sleeves are provided in one-to-one correspondence with locking screws. The locking screws are provided with threaded sections that engage with the threaded sleeves. The locking screws are configured to move axially along the locking screws as the threaded sleeves rotate, so as to lock or unlock the battery and the load-bearing components.

[0016] 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 mesh to achieve transmission engagement.

[0017] In some embodiments, two second drive wheels that are axially adjacent along the first drive wheel are axially spaced apart, and the first drive wheel is configured to move relative to the first drive wheel along the axial direction of the first drive wheel to switch from driving engagement with one second drive wheel to driving engagement with the other second drive wheel.

[0018] In some embodiments, the drive component is configured to be axially movable relative to the base along the first drive wheel. The base is provided with a disassembly / removal tool interface adapted to a disassembly / removal tool for removing or installing the battery. The disassembly / removal tool interface is located at the outer end of the drive component along the axial direction of the first drive wheel. The disassembly / removal tool interface allows the disassembly / removal tool to be inserted to drively connect with the drive component and push the drive component to drive the first drive wheel to move along the axial direction of the first drive wheel.

[0019] In some embodiments, the locking mechanism further includes an elastic member that pushes the first drive wheel along the axial direction of the first drive wheel, the elastic member being configured to push the first drive wheel to a position where it does not engage with any of the second drive wheels.

[0020] In some embodiments, the locking mechanism further includes an elastic member that pushes the first drive wheel along the axial direction of the first drive wheel, the elastic member being configured to push the first drive wheel to a position where it engages with at least one second drive wheel.

[0021] In some embodiments, an anti-rotation component is further included, which engages with the drive component to prevent rotation. The anti-rotation component is movable 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 located at the disassembly tool interface so that it is pushed to the second state by the disassembly tool when the disassembly tool is inserted into the disassembly tool interface.

[0022] In some embodiments, one of the anti-rotation component and the base is provided with an anti-rotation protrusion, and the other is provided with a slot adapted to the anti-rotation protrusion.

[0023] According to another aspect of the present invention, an electrical device is also provided, which includes the locking mechanism for the replaceable battery described above.

[0024] By applying the technical solution of this application, one driving component can drive at least two locking screws to move, and each disassembly and assembly 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 load-bearing component in the prior art.

[0025] Other features and advantages of the invention will become clear from the following detailed description of exemplary embodiments of the invention with reference to the accompanying drawings. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 The present application provides a schematic diagram of the structure of an electrical device according to some embodiments thereof.

[0028] Figure 2 An exploded structural diagram of a battery disclosed in some embodiments of this application is shown;

[0029] Figure 3 The present application shows a schematic diagram of the structure of a battery cell disclosed in some embodiments;

[0030] Figure 4 A perspective structural schematic diagram of the locking mechanism for a replaceable battery disclosed in some embodiments of this application is shown;

[0031] Figure 5 A cross-sectional schematic diagram of the locking mechanism for a replaceable battery disclosed in some embodiments of this application is shown;

[0032] Figure 6 A perspective view of the locking mechanism for a replaceable battery disclosed in some other embodiments of this application is shown;

[0033] Figure 7 An exploded view of the locking mechanism for a replaceable battery disclosed in some other embodiments of this application is shown;

[0034] Figure 8 A schematic diagram of the locking screw of the locking mechanism for a replaceable battery disclosed in some other embodiments of this application is shown;

[0035] Figure 9 A cross-sectional view of the locking mechanism for a replaceable battery disclosed in some embodiments of this application is shown. Detailed Implementation

[0036] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0037] In the description of this application, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," and "outer," etc., indicating orientation 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 orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. Furthermore, the terms "first," "second," and "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. "Vertical" is not vertical in the strict sense, but within the allowable tolerance range. "Parallel" is not parallel in the strict sense, but within the allowable tolerance range.

[0038] The directional terms used in the following description refer to the directions shown in the figures and are not intended to limit the specific structure of this application. It should also be noted in the description of this application that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] Furthermore, the "range" disclosed in this application is defined in the form of a lower limit and an upper limit. A given range is defined by selecting a lower limit and an upper limit, which define the boundaries of the particular range. Ranges defined in this way can include or exclude endpoints and can be arbitrarily combined; that is, any lower limit can be combined with any upper limit to form a range. For example, if ranges of 60-120 and 80-110 are listed for a specific parameter, it is also expected that ranges of 60-110 and 80-120 are also included. Furthermore, if minimum range values ​​1 and 2 are listed, and if maximum range values ​​3, 4, and 5 are listed, then the following ranges are all expected: 1-3, 1-4, 1-5, 2-3, 2-4, and 2-5. In this application, unless otherwise stated, the numerical range "ab" represents a shortened representation of any combination of real numbers between a and b, where a and b are real numbers. For example, the numerical range "0-5" indicates that all real numbers between "0-5" have been listed in this article; "0-5" is simply a shortened representation of these numerical combinations. Furthermore, when a parameter is stated as an integer ≥2, it is equivalent to disclosing that the parameter is, for example, an integer such as 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, etc.

[0040] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0041] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0042] Unless otherwise specified, all steps in this 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 it may include steps (b) and (a) performed sequentially. For example, the mention that the method may also include step (c) indicates that step (c) may be added to the method in any order. For example, the method may include steps (a), (b), and (c), or it may include steps (a), (c), and (b), or it may include steps (c), (a), and (b), etc.

[0043] Unless otherwise specified, the terms "comprising" and "including" as used in this application can be open-ended or closed-ended. For example, "comprising" and "including" can mean that other components not listed may also be included, or that only the listed components may be included.

[0044] Unless otherwise specified, the term "or" is inclusive in this application. For example, the phrase "A or B" means "A, B, or both A and B". More specifically, the condition "A or B" is satisfied by any of the following conditions: 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).

[0045] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0046] Figure 1 A schematic diagram of an electrical device using a battery as a power source is shown; for example... Figure 1 As shown, the electrical device in this embodiment includes a vehicle 1000, which can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle, etc. A battery pack 100 is disposed inside the vehicle 1000, and the battery pack 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery pack 100 can be used to power the vehicle 1000; for example, the battery pack 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery pack 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0047] In some embodiments of this application, the battery pack 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0048] Please refer to Figure 2 , Figure 2This is an exploded view of a battery pack 100 provided in some embodiments of this application. The battery pack 100 includes a housing 110 and a battery module disposed within the housing 110. The battery module includes a plurality of battery cells 120, which are housed within the housing 110. The housing 110 provides a receiving space for the battery cells 120, and the housing 110 can adopt various structures. In some embodiments, the housing 110 may include a first portion 111 and a second portion 112, which overlap each other, and the first portion 111 and the second portion 112 together define a receiving space for accommodating the battery cells 120. The second part 112 can be a hollow structure with one end open, and the first part 111 can be a plate-like structure. The first part 111 covers the open side of the second part 112 so that the first part 111 and the second part 112 together define the accommodating space. Alternatively, the first part 111 and the second part 112 can both be hollow structures with one side open, and the open side of the first part 111 covers the open side of the second part 112. Of course, the box 110 formed by the first part 111 and the second part 112 can be of various shapes, such as a cylinder, a cuboid, etc.

[0049] In the battery pack 100, there can be multiple battery cells 120. These multiple battery cells 120 can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 120 are connected in both series and parallel. Multiple battery cells 120 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 120 is housed within the casing 110. Alternatively, the battery pack 100 can also consist of multiple battery cells 120 first connected in series, parallel, or in a mixed configuration to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed configuration to form a whole, which is also housed within the casing 110. The battery pack 100 may also include other structures; for example, the battery pack 100 may also include a busbar component for electrical connection between the multiple battery cells 120.

[0050] Each battery cell 120 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 120 can be cylindrical, flat, cuboid, or other shapes.

[0051] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 120 provided in some embodiments of this application. The battery cell 120 refers to the smallest unit constituting the battery pack 100. For example... Figure 3 The battery cell 120 includes an end cap 121, a housing 122, a cell assembly 123, and other functional components.

[0052] End cap 121 refers to a component that covers the opening of housing 122 to isolate the internal environment of battery cell 120 from the external environment. The shape of end cap 121 can be adapted to the shape of housing 122 to fit it. Optionally, end cap 121 can be made of a material with certain hardness and strength, such as aluminum alloy, so that end cap 121 is less prone to deformation under pressure and impact, enabling battery cell 120 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 121a can be provided on end cap 121. Electrode terminals 121a can be used for electrical connection with cell assembly 123 to output or input electrical energy to battery cell 120. In some embodiments, end cap 121 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 120 reaches a threshold. The material of end cap 121 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 121. The insulating element can be used to isolate the electrical connection components within the housing 122 from the end cap 121 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0053] 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 accommodate the 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 can be used to close the opening to form the internal environment of the battery cell 120. Alternatively, the end cap 121 and the housing 122 can be integrated. Specifically, the end cap 121 and the housing 122 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 122, the end cap 121 closes the housing 122. The housing 122 can have various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 122 can be determined according to the specific shape and size of the cell assembly 123. The shell 122 can be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special restrictions on this.

[0054] The cell assembly 123 is the component in the battery cell 100 where the electrochemical reaction takes place. The housing 122 may contain one or more cell assemblies 123. The cell assembly 123 is mainly formed by winding or stacking electrode sheets, wherein the electrode sheets include positive electrode sheets and negative electrode sheets, and a separator is usually provided between the positive electrode sheets and the negative electrode sheets.

[0055] The electrode mainly consists of a thin sheet-like current collector and an active material coated on the current collector. The portions of the positive electrode (cathode electrode) and negative electrode (anode electrode) containing active material constitute the main body of the battery cell assembly, while the portions of the positive and negative electrodes without active material each constitute tabs 123a. The positive and negative tabs can be located together at one end of the main body or at opposite ends of the main body. During the charging and discharging process of the battery pack 100, the positive and negative active materials react with the electrolyte, and the tabs 123a connect to the electrode terminals to form a current loop.

[0056] In some embodiments, the battery and the load-bearing component of the electrical device are connected by bolts and nuts adapted to the bolts. One of the bolts and nuts is fixed to the load-bearing component (e.g., a vehicle beam) of the electrical device (e.g., a vehicle). After a new battery is replaced, the other of the bolts and nuts is tightened so that the nuts and bolts secure the battery to the load-bearing component.

[0057] The technical solution of fixing the battery to the load-bearing component with nuts and bolts requires the bolts and nuts to be aligned, which requires a high degree of operational precision. If the bolts and nuts are not aligned, the fasteners (nuts or bolts) installed on the load-bearing component may be damaged. Once the fasteners are damaged, the electrical device needs to be repaired, so the maintenance cost is relatively high.

[0058] In other embodiments, see Figure 4 and Figure 5 As shown, the locking mechanism for connecting the battery 10 and the support component 9 includes a base 1 with a mounting cavity, a locking screw 3 with one end inserted into the mounting cavity of the base 1, and a drive component 2 configured to drive the locking screw 3 to extend outward from the mounting cavity of the base 1 or retract inward from the base 1. The locking screw 3 includes a rod body 31, a threaded section 32 located in the mounting cavity of the base 1 and connected to the rod body 31, and a stop portion 33 located at the end of the rod body 31 away from the threaded section 32. The stop portion 33 protrudes radially from the rod body 31 of the locking screw 3, so that after the locking screw 3 retracts inward from the base 1, it clamps the support component 9 and the battery 10 between the stop portion 33 and the base 1, thereby locking the support component 9 and the battery 10.

[0059] The supporting component 9 is provided with a through hole that allows the locking screw 3 to pass through. The cross-section of the through hole is adapted to the stop part 33. The locking screw 3 is rotatably disposed in the through hole so that the stop part 33 can switch between a first position that can pass through the through hole and a second position that is engaged at the edge of the through hole.

[0060] The locking screw 3 also includes a guide pin 34 on the rod body 31, and a guide groove 13 that is adapted to the guide pin 34 and extends spirally along the circumference of the locking screw 3 on the base 1. During the process of the locking screw 3 extending out of or retracting from the base 1, the guide pin 34 moves along the guide groove 13, thereby causing the locking screw 3 to rotate, and thus enabling the stop part 33 to switch between a first position that can pass through the through hole and a second position that is engaged at the edge of the through hole.

[0061] The driving component 2 includes a threaded sleeve that is rotatably disposed relative to the base 1. The threaded sleeve is adapted to the threaded section 32 of the locking screw 3. During the rotation of the threaded sleeve, the locking screw 3 is driven to move along the axial direction of the locking screw 3, thereby causing the locking screw 3 to extend outward or retract inward to the base 1.

[0062] The drive component 2 also includes a connecting part that is connected to the threaded sleeve and configured to engage with the disassembly and assembly tool that rotates the threaded sleeve to prevent rotation. The disassembly and assembly tool engages with the connecting part to prevent rotation, and the disassembly and assembly tool rotates synchronously with the connecting part, 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.

[0063] The drive component 2 and the locking screw 3 are inserted into the mounting cavity of the base 1 from opposite ends of the base 1. The threaded sleeve of the drive component 2 is located at the end of the drive component 2 located in the mounting cavity, the connecting part of the drive component 2 is located outside the threaded sleeve, and the threaded section 31 of the locking screw 3 is located in the mounting cavity and is threadedly engaged with the threaded sleeve of the drive component 2.

[0064] 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 has an anti-rotation protrusion, and the other has a groove that matches the anti-rotation protrusion. The anti-rotation component 5 is movable relative to the base 1 to switch between a first state of anti-rotation engagement with the base 1 and a second state of rotatability relative to the base 1. When the anti-rotation component 5 is in the first state, the anti-rotation protrusion is embedded in the groove; when the anti-rotation component 5 is in the second state, the anti-rotation protrusion disengages from the groove.

[0065] In the first state, the anti-rotation component 5 engages with the drive component 2 and the base 1 respectively to prevent rotation, thereby limiting the rotation of the drive component 2 relative to the base 1 and helping to prevent the locking screw 3 from loosening.

[0066] The locking mechanism also includes an elastic member 7 for pushing the anti-rotation member 5 toward the first state. The anti-rotation member 5 is located at the inlet end of the mounting cavity of the base 1 near the drive member 2. The anti-rotation member 5 is configured to move into the interior of the mounting cavity to switch from the first state to the second state. Therefore, during the process of the disassembly tool engaging with the connection part of the drive member, the anti-rotation member 5 can be switched to the second state.

[0067] The locking screw 3 needs to pass through the bearing component 9 and the battery 10 from top to bottom and extend into the interior of the base 1. Therefore, the outer diameter of the thread at the mating point between the locking screw 3 and the threaded sleeve of the driving component 2 is greatly limited, which seriously affects the service life of the locking screw 3. Experimental results show that the thread at the mating point between the threaded section 32 at the bottom of the locking screw 3 and the threaded sleeve is a weak point and is prone to breakage.

[0068] In this embodiment, a locking screw 3 is provided for each driving component 2. The disassembly and assembly tool includes a motor that provides power and a connector that is connected to the motor and engages with the connection part of the driving component 2 to prevent rotation. The disassembly and assembly tool is large in size and requires a certain amount of working space. Therefore, the number of locking screws 3 is limited, and the stability of the locking mechanism connection has certain defects.

[0069] To improve the above problems, see Figure 6 and 7 As shown, in some other embodiments of this application, the locking mechanism for a replaceable battery includes a base 1, a drive component 2, and at least two locking screws 3.

[0070] The base 1 has a mounting cavity. At least a portion of the drive component 2 is disposed within the mounting cavity, and the drive component 2 is configured to be rotatable relative to the base 1.

[0071] Each locking screw 3 is at least partially disposed within the mounting cavity and is configured to move axially along the locking screw 3 under the drive of the drive member 2, to retract into the base 1 to lock the battery 10 and the carrier member 9 carrying the battery 10, or to extend outward from the base 1 to unlock the battery 10 and the carrier member 9.

[0072] In this embodiment, one driving component 2 can drive at least two locking screws 3 to move, and each disassembly and assembly tool can perform locking and unlocking operations on multiple locking screws 3. Therefore, the locking mechanism of this embodiment can be equipped with more locking screws 3, which is beneficial to improving the problem of unstable connection structure between the battery 10 and the bearing component 9 in the prior art.

[0073] In some embodiments, the drive component 2 is configured to engage with at least two locking screws 3 simultaneously; one drive component 2 can simultaneously lock and unlock multiple locking screws 3, which is beneficial to improving the efficiency of replacing batteries for electrical devices.

[0074] In other embodiments, the drive component 2 is configured to be movable relative to the base 1 to switch from driving engagement with one locking screw 3 to driving engagement with another locking screw 3. The drive component 2 locks or unlocks only 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.

[0075] The locking mechanism also includes a transmission unit 4, which is configured to simultaneously drive at least two locking screws 3 to the drive component 2 or to drive at least two locking screws 3 one by one to the drive component 2. The drive component 2 locks or unlocks only one locking screw 3 at a time, 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] In some embodiments, the transmission part 4 includes a first transmission wheel 41, at least two second transmission wheels 42, and at least two threaded sleeves 43.

[0077] The first transmission wheel 41 is connected to the drive component 2 for rotation under the drive of the drive component 2. At least two second transmission wheels 42 are arranged circumferentially along the first transmission wheel 41 and configured to be in transmission engagement with the first transmission wheel 41.

[0078] At least two threaded sleeves 43 are provided in a one-to-one correspondence with at least two second drive wheels 42. The threaded sleeves 43 are connected to the corresponding second drive wheels 42 and are configured to rotate with the second drive wheels 42. The threaded sleeves 43 are provided in a one-to-one correspondence with the locking screws 3. The locking screws 3 are provided with threaded sections 31 that are threaded with the threaded sleeves 5 and are configured to move axially along the locking screws 3 as the threaded sleeves 43 rotate, so as to lock or unlock the battery 10 and the carrier component 9.

[0079] In this embodiment, the driving component 2 drives the locking screw 3 to move axially along the locking screw 3 via the transmission part 4. The first transmission wheel 41 is sleeved on and connected to the driving component 2, so as to rotate with the driving component 2. The second transmission wheel 42 is sleeved on and connected to the threaded sleeve 43, so as to drive the threaded sleeve 43 to rotate. During the rotation of the threaded sleeve 43, the locking screw 3 is driven to move axially along the locking screw 3, so as to retract into the base 1 to lock the battery 10 and the supporting component 9 that carries the battery 10, or extend out 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.

[0080] In this embodiment, the transmission part 4 is disposed in the mounting cavity of the base 1, and the locking screw 3 and the driving component are respectively inserted into the mounting cavity of the base 1 from opposite ends of the base 1.

[0081] In some embodiments, two adjacent second transmission wheels 42 along the axial direction of the first transmission wheel 41 are spaced apart in the axial direction. The first transmission wheel 41 is configured to move axially relative to the first transmission wheel 6 to switch from driving engagement with one second transmission wheel 42 to driving engagement with another second transmission wheel 42. This enables the drive 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.

[0082] The drive component 2 is configured to be axially movable relative to the base 1 along 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 / removal tool interface 14. The disassembly / removal tool interface 14 allows a disassembly / removal tool to be inserted to drive the drive component 12 and push the drive component 2, causing the first transmission wheel 41 to move axially, thereby switching the first transmission wheel 41 from being engaged with one second transmission wheel 42 to being engaged with another second transmission wheel 42. Therefore, by pressing the drive component 2, the first transmission wheel 41 can switch the engagement with the second transmission wheel 42, achieving the switching of the second transmission wheel engaged with the first transmission wheel 41 using a simple structure. In some embodiments, the disassembly / removal tool pushes the drive component 2 to move axially along the first transmission wheel 41, thereby switching the first transmission wheel 41 from being engaged with one second transmission wheel 42 to being engaged with another second transmission wheel 42.

[0083] 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 mesh to achieve transmission engagement. By pressing the drive component 2, the second transmission wheel 42 meshing with the first transmission wheel 41 can be changed, which is beneficial to achieve the switching of the first transmission wheel 41 to the second transmission wheel with different transmission engagements through a simple structure.

[0084] The locking mechanism also includes an elastic component 7 located in the mounting cavity that pushes the drive component 2 along the axial direction of the first transmission wheel 41.

[0085] In some embodiments, the elastic member 7 is configured to push the drive member 7 to a position where the first transmission wheel 41 is not engaged with any of the second transmission wheels 42. When no external force presses on the drive member 2, the first transmission wheel 41 is not engaged with any of the second transmission wheels 42. After the locking screw 3 locks the carrier member 9 and the battery 10, accidental rotation of the drive member 2 will not cause the locking screw 3 to loosen. The elastic member 7 acts as a reset mechanism. When it is necessary to drive the locking screw 3 to lock or loosen, the drive member 2 and the first transmission wheel 41 can be moved to make the first transmission wheel 41 engage with the corresponding second transmission wheel 42. By moving the drive member 2 and the first transmission wheel 41, the first transmission wheel 41 can be engaged with different second transmission wheels to drive different locking screws 3 to rotate.

[0086] In some embodiments, the elastic member 7 is configured to push the drive member 7 to a position where the first drive wheel 41 is engaged with at least one second drive wheel 42. In still other embodiments, the elastic member 7 is configured to push the drive member 2 to a position where the first drive wheel 41 is engaged with two axially adjacent second drive wheels 42, so that the first drive wheel 41 simultaneously drives at least two second drive wheels 42, and also helps to prevent at least two locking screws 3 from loosening after the drive member 2 is locked.

[0087] Combination Figures 7 to 9 As shown, 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 state of engaging with the base 1 to prevent rotation and a second state of being rotatable relative to the base 1. The anti-rotation component 5 is located at the disassembly tool interface 14 so that it is pushed to the second state when the disassembly tool is inserted into the disassembly tool interface 14, and simultaneously pushed to the second state that allows the drive component 2 to rotate when the disassembly tool is inserted into the disassembly tool interface 14. This simplifies the process and improves battery replacement efficiency.

[0088] The elastic member 7 is configured to push the anti-rotation member 5 toward the first state. The anti-rotation member 5 is located at the disassembly and assembly tool interface at the outer end of the mounting cavity along the axial direction of the first drive wheel 41. The anti-rotation member 5 is configured to move into the mounting cavity to switch from the first state to the second state. Therefore, during the engagement of the disassembly and assembly tool with the connection part 21 of the drive member 2, the anti-rotation member 5 can be switched to the second state.

[0089] One of the anti-rotation component 5 and the base 1 is provided with an anti-rotation protrusion, and the other is provided with a groove that matches the anti-rotation protrusion. When the anti-rotation component 5 is in the first state, the anti-rotation protrusion is embedded in the groove to prevent the anti-rotation component 5 from rotating relative to the base 1. When the anti-rotation component 5 is in the second state, the anti-rotation protrusion disengages from the groove.

[0090] In the first state, the anti-rotation component 5 engages with the drive component 2 and the base 1 respectively to prevent rotation, thereby restricting the drive component 2 from rotating relative to the base 1. The elastic component 7 pushes the first transmission wheel 41 to engage with one or more second transmission wheels 42. After the drive component 2 is restricted from rotating, it helps to prevent the locking screw 3 from loosening.

[0091] In this embodiment, the drive component 2 includes a connecting part 21 that cooperates with the disassembly and assembly tool, a transmission wheel mounting part 22 for mounting the first transmission wheel 41, and an elastic component mounting part 23 for mounting the elastic component 7.

[0092] The connecting part 21, the transmission wheel mounting part 22, and the elastic component mounting part 23 are arranged and connected together in sequence along the axial direction of the first transmission wheel 41. The connecting part 21 is located on the side of the transmission wheel mounting part 22 near the disassembly tool interface, and the elastic component mounting part 23 is located on the inner side of the transmission wheel mounting part 22.

[0093] The outer diameter of the drive 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 against the transition step at the junction of the drive wheel mounting portion 22 and the elastic component mounting portion 23, and the other end abuts against the bottom of the mounting cavity. A washer 8 is also provided between the elastic component 7 and the bottom of the mounting cavity.

[0094] The locking mechanism also includes a cylindrical component 6, which is sleeved on the connecting part 21. One end of the cylindrical component 6 abuts against the anti-rotation component 5, and the other end abuts against the transition step at the junction of the connecting part 21 and the transmission wheel mounting part 22.

[0095] After the disassembly and assembly tool is inserted into the disassembly and assembly tool structure, it switches to the second state by pushing the anti-rotation component 5. The disassembly and assembly tool pushes further inward, and the anti-rotation component 5 pushes the drive component 2 into the base 1 through the cylindrical component 6, so that the first transmission wheel 41 meshes with a second transmission wheel 42. After tightening one locking screw 3, the drive component 2 can be pushed into the base 1 again, so that the second transmission wheel 41 meshes with another second transmission wheel 42, and then the other locking screw 3 is tightened.

[0096] 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 part 4, one end of which is an open end, and the cover plate 12 is disposed on the open end to form a mounting cavity. A disassembly / assembly tool interface is provided on the cover plate 12.

[0097] The locking screw is located at the end of the base 1 away from the disassembly interface. The bearing component 9 is provided with a through hole 91 that allows the locking screw 3 to pass through. The cross-section of the through hole 91 is adapted to the stop part 33. The locking screw 3 is rotatably disposed in the through hole so that the stop part 33 can switch between a first position that can pass through the through hole and a second position that is hooked on the edge of the through hole.

[0098] The locking screw 3 also includes a guide pin 34 on the rod body 31, and a guide groove 13 that is adapted to the guide pin 34 and extends spirally along the circumference of the locking screw 3 on the base 1. During the process of the locking screw 3 extending out of or retracting from the base 1, the guide pin 34 moves along the guide groove 13, thereby causing the locking screw 3 to rotate, and thus enabling the stop part 33 to switch between a first position that can pass through the through hole and a second position that is engaged with the edge of the through hole 91.

[0099] As the locking screw 3 retracts into the base 1, it engages with the edge stop 33 passing through 91, pressing the supporting component 9 and the battery 10 against the base 1.

[0100] The above description is merely an exemplary embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A locking mechanism for a replaceable battery, characterized in that, include: The base (1) is provided with an installation cavity; The drive component (2) is at least partially disposed within 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 disposed within the mounting cavity and configured to move axially along the locking screws (3) under the drive of the drive member (2) to retract into the base (1) to lock the battery (10) and the support member (9) carrying the battery (10) or to extend outward from the base (1) to unlock the battery (10) and the support member (9). The drive component (2) is configured to be movable relative to the base (1) to switch from driving engagement with one of the locking screws (3) to driving engagement with the other of the locking screws (3).

2. The locking mechanism for the replaceable battery according to claim 1, characterized in that, It also includes a transmission part (4) configured to drive at least two of the locking screws (3) to the drive component (2) one by one.

3. The locking mechanism for the replaceable battery according to claim 2, characterized in that, The transmission unit (4) includes: The first transmission wheel (41) is connected to the driving component (2) for transmission, so as to rotate under the drive of the driving component (2); At least two second drive wheels (42) are arranged circumferentially along the first drive wheel (41) and configured to be driveably engaged with the first drive wheel (41); At least two threaded sleeves (43) are provided in a one-to-one correspondence with at least two second drive wheels (42). The threaded sleeves (43) are connected to the corresponding second drive wheels (42) and configured to rotate with the second drive wheels (42). The threaded sleeves (43) are provided in a one-to-one correspondence with locking screws (3). The locking screws (3) are provided with threaded sections (31) that are threadedly engaged with the threaded sleeves (43). The locking screws (3) are configured to move axially along the locking screws (3) as the threaded sleeves (43) rotate, so as to lock or unlock the battery (10) and the bearing component (9).

4. The locking mechanism for the replaceable battery according to claim 3, characterized in that, 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 mesh to achieve transmission engagement.

5. The locking mechanism for the replaceable battery according to claim 3, characterized in that, Two adjacent second drive wheels (42) along the axial direction of the first drive wheel (41) are spaced apart in the axial direction. The first drive wheel (41) is configured to move relative to the first drive wheel (41) along the axial direction of the first drive wheel (41) to switch from driving engagement with one of the second drive wheels (42) to driving engagement with the other second drive wheel (42).

6. The locking mechanism for the replaceable battery according to claim 5, characterized in that, The drive component (2) is configured to be axially movable relative to the base (1) along the first drive wheel (41). The base (1) is provided with a disassembly / removal tool interface (14) adapted to a disassembly / removal tool for removing or installing a battery. The disassembly / removal tool interface (14) is located at the outer end of the drive component (2) along the axial direction of the first drive wheel (41). The disassembly / removal tool interface (14) allows a disassembly / removal tool to be inserted to drive the drive component (2) and push the drive component (2) to drive the first drive wheel (41) to move along the axial direction of the first drive wheel (41).

7. The locking mechanism for the replaceable battery according to claim 3, characterized in that, It also includes an elastic member (7) that pushes the first drive wheel (41) along the axial direction of the first drive wheel (41), the elastic member (7) being configured to push the first drive wheel (41) to a position where it does not engage with either of the second drive wheels (42).

8. The locking mechanism for the replaceable battery according to claim 3, characterized in that, It also includes an elastic member (7) that pushes the first drive wheel (41) along the axial direction of the first drive wheel (41), the elastic member (7) being configured to push the first drive wheel (41) to a position where it engages with at least one second drive wheel (42).

9. The locking mechanism for the replaceable battery according to claim 6, characterized in that, It also includes an anti-rotation component (5), which is anti-rotation engaged with the drive component (2). The anti-rotation component (5) is movable relative to the base (1) to switch between a first state of anti-rotation engagement with the base (1) and a second state of rotatability relative to the base (1). The anti-rotation component (5) is located at the disassembly tool interface (14) so ​​that it is pushed to the second state by the disassembly tool when the disassembly tool is inserted into the disassembly tool interface (14).

10. The locking mechanism for the replaceable battery according to claim 9, characterized in that, One of the anti-rotation component (5) and the base (1) is provided with an anti-rotation protrusion, and the other is provided with a slot that matches the anti-rotation protrusion.

11. An electrical appliance, characterized in that, The locking mechanism includes the replaceable battery as described in any one of claims 1 to 10.

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