Battery device and electric device

Abstract

The utility model relates to a battery device and a power utilization device. The battery device comprises a battery monomer, a box body, an upper cover and a buckle mechanism, a battery monomer is accommodated in the box body; the upper cover covers the open end of the box body; the buckling mechanism comprises a first buckling piece and a second buckling piece, one of the first buckling piece and the second buckling piece is arranged on the upper cover, the other one of the first buckling piece and the second buckling piece is arranged on the box body, the second buckling piece comprises a mounting seat, a buckling part and a locking part, the mounting seat is arranged on the box body or the upper cover, the buckling part is movably connected with the mounting seat, and the locking part is movably connected with the mounting seat. The first fastener is provided with a clamping state in which the first fastener is clamped and a separating state in which the first fastener is separated; wherein one end of the locking part is connected with the buckling part, the other end of the locking part is movably connected with the mounting seat, and the locking part has a locking state in which the locking part is locked with the mounting seat and a movable state in which the locking part can move relative to the mounting seat. According to the scheme, the upper cover and the box body are connected through the buckle mechanism, the assembling mode between the upper cover and the box body is simplified, and a user is prompted whether the buckle mechanism is assembled in place or not.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a battery device and an electrical device. Background Technology

[0002] A battery pack is a high-voltage energized device. To ensure the normal operation of new energy vehicles in scenarios such as heavy rain and wading, it is usually designed to be sealed. Currently, the top cover of the battery pack is generally connected to the housing with bolts, and sufficient clamping force is applied to achieve a seal. This connection method requires a high degree of precision in the position of the holes in the connected components, the sealing width, and the professionalism of the operators.

[0003] Moreover, the assembly process is tedious and complicated, and it is easy for problems such as incomplete assembly and omissions to occur, which can affect the sealing effect between the cover and the box. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and an electrical device that can alleviate the problem of easy omission or improper assembly when assembling the top cover and the housing together.

[0005] In a first aspect, this application provides a battery device, which includes a battery cell, a housing, a top cover, and a latching mechanism. The battery cell is housed inside the housing; the top cover closes to the opening end of the housing; the latching mechanism includes a first latching member and a second latching member, one of which is disposed on the top cover and the other is disposed on the housing; the second latching member includes a mounting base, a latching part, and a locking part; the mounting base is disposed on the housing or the top cover; the latching part is movably connected to the mounting base and has a latching state that is engaged with the first latching member and a disengaged state that is separated from the first latching member;

[0006] One end of the locking part is connected to the snap-fit ​​part, and the other end is movably connected to the mounting base. The locking part has a locked state that is locked to the mounting base and a movable state that can move relative to the mounting base.

[0007] In the technical solution of this application embodiment, a snap-fit ​​mechanism is used to assemble the top cover and the box body together. Compared with using bolts or other components to connect the top cover and the box body, this simplifies the assembly method and improves the assembly efficiency. Secondly, a snap-fit ​​part and a locking part are provided on the second snap-fit ​​component. When the snap-fit ​​part and the first snap-fit ​​component are engaged, the locking part can be used to indicate to the user whether the second snap-fit ​​component is properly assembled, reducing the probability of omissions during assembly. Furthermore, when the locking part is in the locked state, it can also provide secondary fixation to the snap-fit ​​part, improving the connection stability between the first snap-fit ​​component and the second snap-fit ​​component. This reduces the probability of the snap-fit ​​mechanism accidentally opening, leading to a failure of the seal between the top cover and the box body.

[0008] In some embodiments, the locking part includes a body and an elastic connecting part. One end of the body is connected to the snap-fit ​​part, and the other end is connected to the elastic connecting part. The end of the elastic connecting part away from the body is connected to the mounting base. In the locked state, the elastic connecting part is compressed and undergoes elastic deformation, and the body is connected to the mounting base.

[0009] Thus, when the locking part is released from the locked state, the elastic connecting part is used to realize the automatic return of the main body, which improves the automation level of the locking part.

[0010] In some embodiments, the mounting base has a through hole and a receiving groove communicating with the through hole, and the body has a locking block protruding from one side of the mounting base. When the locking part is in the locked state, part of the locking block is received in the receiving groove and engages with the through hole.

[0011] By setting the connection between the main body and the mounting base to a snap-fit, the assembly difficulty between the two is reduced, making it easier to separate and connect them together.

[0012] In some embodiments, the mounting base is configured as a plate-like structure that protrudes away from the housing to form a receiving groove.

[0013] The above settings simplify the structure of the mounting base and reduce its weight without affecting its performance, thus reducing the difficulty of its production and processing.

[0014] In some embodiments, the elastic connection includes a first end and a second end disposed opposite to each other, and a through deformation cavity is formed between the first end and the second end, the deformation cavity containing a locking block.

[0015] By placing the locking block inside the elastic connecting part, there is no need to reserve space for assembling the locking block, thus reducing the overall space occupied by the locking part.

[0016] In some embodiments, the locking part further includes a pivot shaft, which is disposed on the outer wall of the housing and rotatably connected to the end of the body away from the mounting base. The body is capable of rotating relative to the mounting base about the axis of the pivot shaft.

[0017] The above configuration simplifies the movement of the main body relative to the mounting base, and when the locking part switches from the locked state to the active state, the main body can automatically return to its original position under the elastic restoring force of the elastic connection part.

[0018] In some embodiments, a latching part is fixedly connected to one end of the main body connected to the rotating shaft, and the main body can drive the latching part to rotate.

[0019] Therefore, since the main body is fixedly connected to the latching part, when the locking part is in the locked state, the main body can apply a force toward the first latching member to the latching part to improve the tightness of the connection between the first latching member and the latching part, thereby improving the latching effect between the first latching member and the second latching member.

[0020] In some embodiments, the first fastening member includes an arc-shaped member that protrudes toward the fastening portion and forms a groove; the fastening portion protrudes around the end connected to the body and together with the end to form a closed structure with a channel.

[0021] When the buckle is in the snap-fit ​​state, part of the arc-shaped part passes through the channel and confines part of the buckle within the slot.

[0022] This design simplifies the structure of the first fastener and the fastening part, making it easier to snap the first fastener and the fastening part together.

[0023] In some embodiments, the top cover has an annular groove that surrounds its circumference, and the battery device also includes an annular seal located within the annular groove. When the top cover is closed to the housing, a portion of the housing extends into the annular groove and contacts the groove wall and the annular seal.

[0024] When the top cover is closed onto the casing, part of the casing extends into the annular groove. The annular seal can deform, and its two sides make close contact with the top cover and the casing respectively, thus firmly installing it in the annular groove, improving the sealing between the top cover and the casing, thereby improving the waterproof effect of the battery device.

[0025] In some embodiments, the first fastener is provided on the outer side wall of the top cover, and the second fastener is provided on the outer side wall of the housing.

[0026] Therefore, compared to setting fasteners on the surfaces of the top cover and the box body respectively, setting corresponding fasteners on the sides of the top cover and the box body can reduce the space occupied by the fasteners inside the box body and increase the internal layout space of the box body.

[0027] Secondly, this application provides an electrical device that includes the battery device described in the above embodiments.

[0028] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0029] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiments below. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0030] Figure 1 This is a structural schematic diagram of a vehicle according to one or more embodiments.

[0031] Figure 2 This is an exploded view of a battery device according to one or more embodiments.

[0032] Figure 3 This is an exploded structural diagram of a battery cell according to one or more embodiments.

[0033] Figure 4 This is a schematic diagram of the battery device according to one or more embodiments, with some parts of the structure hidden.

[0034] Figure 5 for Figure 4 Enlarged view of point A in the middle.

[0035] Figure 6 This is a schematic diagram showing the locking part of the battery device in an active state according to one or more embodiments.

[0036] Figure 7 This is a schematic diagram of the locking part of the battery device according to one or more embodiments in a locked state.

[0037] Figure 8 This is a schematic diagram of the battery device according to one or more embodiments, with some parts of the structure hidden.

[0038] The reference numerals in the detailed embodiments are as follows:

[0039] 1000, vehicles;

[0040] 100. Battery assembly; 200. Controller; 300. Motor;

[0041] 10. Housing; 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 30. Top cover; 31. Annular groove; 40. Snap-fit ​​mechanism; 41. First snap-fit ​​element; 411. Snap-fit ​​groove; 42. Second snap-fit ​​element; 421. Mounting base; 4211. Through hole; 4212. Receiving groove; 422. Snap-fit ​​part; 4221. Channel; 423. Locking part; 4231. Body; 42311. Snap block; 4232. Elastic connection part; 4233. Rotating shaft; 50. Annular seal. Detailed Implementation

[0042] The embodiments of the technical solution of this application will now be described in detail with reference to the accompanying drawings. These embodiments are only used to more clearly illustrate the technical solution of this application and are therefore merely examples, and should not be used to limit the scope of protection of this application.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0044] In the description of the embodiments of this application, the technical terms "first," "second," etc., are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0045] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0046] In the description of the embodiments of this application, the term "and / or" merely describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0047] In the description of the embodiments of this application, if any, the term "multiple" refers to two or more (including two), similarly, "multiple sets" refers to two or more (including two sets), and "multiple pieces" refers to two or more (including two pieces).

[0048] In the description of the embodiments of this application, if any technical terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," or "circumferential" appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the embodiments of this application and simplifying the description, and does 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. Therefore, it should not be construed as a limitation on the embodiments of this application.

[0049] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0050] 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.

[0051] With the widespread use of battery devices, their reliability has become an increasingly important concern. During the assembly of a battery device, the top cover and the casing are connected together and sealed. While bolts and other components provide a stable connection, the process is complex and prone to issues such as incomplete assembly or omissions.

[0052] To address the aforementioned problems, this application provides a battery device comprising a housing, a top cover, and a latching mechanism. The latching mechanism includes a first latching member and a second latching member, one of which is disposed on the top cover and the other on the housing. The second latching member includes a latching portion and a locking portion, wherein the latching portion engages with the first latching member, and the locking portion can switch between a locked state and an open state to indicate to the user whether the latching mechanism is properly installed.

[0053] 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.

[0054] The battery cells disclosed in this application can be used, but are not limited to, in electrical devices such as vehicles, ships, or aircraft. A power system for such an electrical device can be constructed using battery cells and batteries disclosed in this application.

[0055] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, energy storage products, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, and energy storage products can include energy storage stations, etc.

[0056] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0057] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 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 device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0058] In some embodiments of this application, the battery device 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.

[0059] Please refer to Figure 2 , Figure 2This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10 and a battery cell 20, the battery cell 20 being housed within the housing 10. The housing 10 provides a space for housing the battery cell 20, and the housing 10 can have various structures. In some embodiments, the housing 10 and a top cover 30 together define a space for housing the battery cell 20. The housing 10 can be a hollow structure open at one end, and the top cover 30 can be a plate-like structure, covering the open side of the housing 10 so that the top cover 30 and the housing 10 together define the space; alternatively, both the top cover 30 and the housing 10 can be hollow structures open on one side, with the open side of the top cover 30 covering the open side of the housing 10. Of course, the housing 10 formed by the top cover 30 and the housing 10 can have various shapes, such as a cylinder, a cuboid, etc.

[0060] In the battery device 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel connections. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 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 housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0061] Each battery cell 20 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 20 can be cylindrical, flat, cuboid, or other shapes.

[0062] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit that makes up a battery. Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0063] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Alternatively, end cap 21 can be made of a material with a certain hardness and strength (such as aluminum alloy), so that end cap 21 is less prone to deformation under pressure and impact, allowing battery cell 20 to have higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with electrode assembly 23 for outputting or inputting electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0064] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 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 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0065] Electrode assembly 23 is the component in the battery cell 20 where electrochemical reactions occur. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0066] like Figure 2 , Figure 4 and Figure 5 As shown, the battery device 100 includes a battery cell 20, a housing 10, a top cover 30, and a latching mechanism 40. The housing 10 houses the battery cell 20; the top cover 30 closes to the opening of the housing 10. The latching mechanism 40 connects the top cover 30 and the housing 10 together to reduce the probability that the opening of the housing 10 will be exposed, or even that the top cover 30 and the housing 10 will separate, under the impact of external forces. The latching mechanism 40 includes a first latching member 41 and a second latching member 42, one of which is located on the top cover 30, and the other is located on the housing 10.

[0067] The second fastener 42 includes a mounting base 421, a fastening part 422, and a locking part 423. The mounting base 421 is disposed on the housing 10 or the top cover 30. The mounting base 421 is used to support the fastening part 422 and the locking part 423. The mounting base 421 can be directly fixed to the outer wall of the housing 10 by welding or other means, or can be detachably installed to the outer wall of the housing 10 by bolts or other means.

[0068] The latching part 422 is movably connected to the mounting base 421, and has a latched state that is engaged with the first latching member 41 and a disengaged state that is separated from the first latching member 41. The connection between the latching part 422 and the mounting base 421 can be, but is not limited to, a rotational connection or a sliding connection.

[0069] The locking part 423 has one end connected to the latching part 422 and the other end movably connected to the mounting base 421. The locking part 423 has a locked state where it is locked to the mounting base 421 and a movable state where it can move relative to the mounting base 421. The connection between the locking part 423 and the mounting base 421 can be, but is not limited to, a rotational connection or a sliding connection. The locking part 423 serves to achieve a dual connection between the latching part 422 and the mounting base 421, and can also indicate to the user whether the locking part 423 is in a successfully locked state.

[0070] The working principle of the latching mechanism 40 will be explained below by taking into account the specific process of assembling the top cover 30 and the box body 10 together.

[0071] like Figure 4 and Figure 5 As shown, assume the first fastener 41 is located on the top cover 30, and the second fastener 42 is located on the housing 10. The top cover 30 is closed onto the open end of the housing 10, with the first fastener 41 and the second fastener 42 positioned opposite each other. At this time, the fastening part 422 is in a separated state. The fastening part 422 is then engaged with the first fastener 41, switching the fastening part 422 from a separated state to an engaged state. The engaged first fastener 41 and the second fastener 42 can connect the top cover 30 and the housing 10 together.

[0072] When the latching part 422 just switches from the disengaged state to the engaged state, the locking part 423 is in the active state (e.g., ...). Figure 6 As shown in the diagram, the active state can be understood as follows: when pressure is applied to the locking part 423 toward the housing 10, the locking part 423 can move relative to the mounting base 421. When the locking part 423 is locked to the mounting base 421, the latching part 422 is indirectly fixed to the mounting base 421 under the action of the locking part 423. At this time, the secondary locking part 423 switches from the active state to the locked state.

[0073] Even in the locked state, a pressure is still applied to the locking part 423 towards the housing 10. Because the locking part 423 and the mounting base 421 are fixed together, the locking part 423 will not move relative to the mounting base 421 under this pressure. In addition, since the locking part 423 and the mounting base 421 are fixedly connected, the locking part 423 can also position the latching part 422. That is, the locking part 423 and the first latching member 41 respectively position different parts of the latching part 422, which improves the connection stability after the latching part 422 and the first latching member 41 are engaged.

[0074] In summary, using the snap-fit ​​mechanism 40 to assemble the top cover 30 and the housing 10 simplifies the assembly process and improves efficiency compared to using bolts or other components. Secondly, the second snap-fit ​​component 42 features a snap-fit ​​part 422 and a locking part 423. When the snap-fit ​​part 422 engages with the first snap-fit ​​component 41, the locking part 423 indicates to the user whether the second snap-fit ​​component 42 is properly assembled, reducing the probability of omissions during assembly. Furthermore, when the locking part 423 is locked, it provides secondary fixation to the snap-fit ​​part 422, improving the connection stability between the first snap-fit ​​component 41 and the second snap-fit. This reduces the probability of the snap-fit ​​mechanism 40 accidentally opening, leading to a seal failure between the top cover 30 and the housing 10.

[0075] A single battery device 100 may be equipped with multiple latching mechanisms 40, and the specific number of latching mechanisms 40 can be determined according to the actual situation.

[0076] like Figure 6 As shown, in some embodiments, the locking part 423 includes a body 4231 and an elastic connecting part 4232. One end of the body 4231 is connected to the latching part 422, and the other end is connected to the elastic connecting part 4232. The end of the elastic connecting part 4232 away from the body 4231 is connected to the mounting base 421. When the locking part 423 is in the locked state, the elastic connecting part 4232 is compressed and undergoes elastic deformation, and the body 4231 is connected to the mounting base 421.

[0077] The elastic connecting part 4232 may be, but is not limited to, a spring or other component. The elastic connecting part 4232 is used to enable the main body 4231 to automatically return to its original position when the locking part 423 is released from the locked state.

[0078] For example, assuming the locking part 423 is in the active state, the body 4231 is in the first position and is not directly connected to the mounting base 421, and the elastic connection part 4232 is not compressed. At this time, the user can directly observe that the body 4231 is not directly connected to the mounting base 421.

[0079] When the locking part 423 switches from the active state to the locked state, the body 4231 moves from the first position to the second position and directly connects with the mounting base 421. During this process, the elastic connecting part 4232 is compressed and undergoes elastic deformation. When the locking part 423 is released from the locked state, that is, when the body 4231 is no longer directly connected to the mounting base 421, the body 4231 can move from the second position to the first position under the action of the elastic restoring force of the elastic connecting part 4232, so that the body 4231 directly returns to its active position.

[0080] Thus, when the locking part 423 is released from the locked state, the elastic connecting part 4232 is used to realize the automatic return of the main body 4231, thereby improving the automation level of the locking part 423.

[0081] Specifically, such as Figure 5 and Figure 6 As shown, in some embodiments, the mounting base 421 has a through hole 4211 and a receiving groove 4212 communicating with the through hole 4211. The body 4231 has a locking block 42311 protruding from one side facing the mounting base 421. When the locking part 423 is in the locked state, part of the locking block 42311 is accommodated in the receiving groove 4212 and is engaged with the through hole 4211.

[0082] For example, one surface of the mounting base 421 has a through hole 4211 and is connected to the elastic connection portion 4232. The other end of the elastic connection portion 4232 is connected to the body 4231.

[0083] When the locking part 423 is in the active state, the locking block 42311 on the main body 4231 is positioned facing the mounting base 421, and the elastic connecting part 4232 is located between the main body 4231 and the mounting base 421. During the process of the locking part 423 switching from the active state to the locked state, the main body 4231 continuously approaches the mounting base 421, and the elastic connecting part 4232 is compressed and deformed until the locking block 42311 on the main body 4231 is inserted into the receiving groove 4212 through the through hole 4211 and engages with the through hole 4211, at which point the locking part 423 switches to the locked state.

[0084] When it is necessary to release the locking state, the locking block 42311 can be separated from the through hole 4211.

[0085] Thus, by setting the connection between the main body 4231 and the mounting base 421 as a snap-fit, the assembly difficulty between the two is reduced, making it easier to separate and connect the two together.

[0086] More specifically, in some embodiments, the mounting base 421 is configured as a plate-like structure that protrudes away from the housing 10 to form a receiving groove 4212.

[0087] For example, the structure of the mounting base 421 can be configured as a plate-like structure with a central protrusion forming a receiving groove 4212. When the mounting base 421 is assembled to the outer wall of the housing 10, the mounting base 421 and the outer wall of the housing 10 can together enclose and form the aforementioned receiving groove 4212.

[0088] The above-mentioned settings simplify the structure of the mounting base 421 and reduce its weight without affecting its performance, thus reducing the difficulty of manufacturing and processing the mounting base 421.

[0089] Please see Figure 6 In some embodiments, the elastic connection portion 4232 includes a first end and a second end disposed opposite to each other, and a through deformation cavity is formed between the first end and the second end, the deformation cavity containing a locking block 42311.

[0090] For example, a spring is used as the elastic connecting part 4232, and the cavity inside the spring is the deformation cavity. Because the locking block 42311 is located in the deformation cavity, when the locking part 423 switches between different states, the extension length of the deformation cavity is equal to the movement path of the locking block 42311.

[0091] As the main body 4231 approaches the mounting base 421 and compresses the elastic connecting part, the locking block 42311 moves along the deformation cavity and directly passes through the through hole 4211 through one end of the deformation cavity to enter the receiving groove 4212. When the main body 4231 moves in the opposite direction under the elastic restoring force of the spring, the locking block 42311 leaves the receiving groove 4212 and enters the deformation cavity to move in the opposite direction.

[0092] Thus, by placing the locking block 42311 inside the elastic connecting part 4232, there is no need to reserve a space for assembling the locking block 42311, reducing the overall space occupied by the locking part 423.

[0093] Please see Figure 6 and Figure 7 In some embodiments, the locking part 423 further includes a rotating shaft 4233, which is disposed on the outer wall of the housing 10 and is rotatably connected to the end of the body 4231 away from the mounting base 421. The body 4231 can rotate relative to the mounting base 421 about the axis of the rotating shaft 4233.

[0094] The rotating shaft 4233 is positioned closer to the first snap-fit ​​member 41 than the mounting base 421. The rotating shaft 4233 can be easily installed on the housing 10 via threaded connection, snap-fit, or other detachable methods. The rotating shaft 4233 and the housing 4231 are also detachable via plug-in connection or other methods, so that if at least one of the rotating shaft 4233 and the housing 4231 is damaged, the damaged part can be replaced with a new part.

[0095] When the locking part 423 switches between different states, the body 4231 can rotate around the rotating shaft 4233 to drive the locking block 42311 on the body 4231 to approach the mounting base 421 and compress the elastic connecting part 4232, or cause the body 4231 to rotate away from the mounting base 421 under the action of the elastic restoring force of the elastic connecting part 4232.

[0096] The above configuration simplifies the movement of the main body 4231 relative to the mounting base 421, and facilitates the automatic return of the main body 4231 to its original position under the elastic restoring force of the elastic connecting part 4232 when the locking part 423 switches from the locked state to the active state.

[0097] In some embodiments, a latching part 422 is fixedly connected to one end of the body 4231 connected to the rotating shaft 4233, and the body 4231 can drive the latching part 422 to rotate.

[0098] For example, during the assembly of the top cover 30 and the housing 10, assuming the main body 4231 is rotated counterclockwise, the main body 4231 drives the latching part 422 until the latching part 422 engages with the first latching member 41, i.e., the latching part 422 switches to the engaged state. Subsequently, the main body 4231 can be rotated clockwise until the latching block 42311 on the main body 4231 engages with the mounting base 421, thus the locking part 423 switches to the locked state. Because the main body 4231 and the latching part 422 are always connected, when the main body 4231 is rotated clockwise, the latching part 422 will also rotate clockwise under the drive of the main body 4231. At this time, the first latching member 41 will block the rotation of the latching part 422, which can improve the tightness of the connection between the first latching member 41 and the latching part 422.

[0099] Therefore, since the main body 4231 is fixedly connected to the latching part 422, when the locking part 423 is in the locked state, the main body 4231 can apply a force toward the first latching member 41 to the latching part 422 to improve the tightness of the connection between the first latching member 41 and the latching part 422, thereby improving the latching effect between the first latching member 41 and the second latching member 42.

[0100] Of course, in other embodiments, the body 4231 and the latching part 422 are rotatably connected. The axis of rotation of the latching part 422 relative to the body 4231 is parallel to the axis of rotation of the body 4231 relative to the mounting base 421. This improves the flexibility of the latching part 422 during use, making it easy to adjust to different angles to meet requirements.

[0101] In some embodiments, the first latching member 41 includes an arc-shaped member that protrudes toward the latching portion 422 and forms a latching groove 411; the latching portion 422 protrudes around the end connected to the body 4231 and together with the end to form a closed structure with a channel 4221; when the latching portion 422 is in the latching state, part of the arc-shaped member passes through the channel 4221 and confines part of the latching portion 422 within the latching groove 411.

[0102] For example, the entire first latching member 41 is directly constructed as an arc-shaped part. When the latching part 422 rotates toward the first latching member 41, the end of the first latching member 41 away from the upper cover 30 can pass through the channel 4221 until part of the latching part 422 enters the latching groove 411 of the first latching member 41, so that the first latching member 41 can be engaged with the latching part 422.

[0103] This design simplifies the structure of the first fastener 41 and the fastener part 422, making it easier to snap the first fastener 41 and the fastener part 422 together.

[0104] Of course, in another embodiment, the first fastener 41 includes an arc-shaped part and a bottom. The arc-shaped part is installed on the upper cover 30 through the bottom. The snap-fit ​​method between the arc-shaped part and the fastener 422 is the same as in the above embodiment, and will not be described again here.

[0105] Please see Figure 5 In some embodiments, the top cover 30 is provided with an annular groove 31 surrounding it in the circumference, and the battery device 100 also includes an annular seal 50 located in the annular groove 31. When the top cover 30 is closed on the housing 10, part of the housing 10 extends into the annular groove 31 and contacts the groove wall of the annular groove 31 and the annular seal 50.

[0106] In other words, the inner circumferential wall of the top cover 30 is provided with an annular groove 31, and an annular seal 50 is provided in the annular groove 31. When the top cover 30 is closed on the housing 10, part of the housing 10 extends into the annular groove 31, and the annular seal 50 can deform, so that its two sides are in close contact with the top cover 30 and the housing 10 respectively, thereby being firmly installed in the annular groove 31, improving the sealing between the top cover 30 and the housing 10, thereby improving the waterproof effect of the battery device 100.

[0107] In some embodiments, the structure of the annular groove 31 can be designed to limit and protect the annular seal 50. For example, the depth of the annular groove 31 can be designed according to the compression amount of the annular seal 50 to precisely control the compression amount of the annular seal 50 and reduce the probability of the annular seal 50 displacing within the annular groove 31 or coming out of the annular groove 31 during use.

[0108] Please see Figure 8 In some embodiments, the first fastener 41 is provided on the outer side wall of the upper cover 30, and the second fastener 42 is provided on the outer side wall of the housing 10.

[0109] Therefore, instead of setting fasteners on the surfaces of the top cover 30 and the box 10 respectively, setting corresponding fasteners on the sides of the top cover 30 and the box 10 can reduce the internal space occupied by the fasteners in the box 10 and increase the internal arrangement space of the box 10.

[0110] Furthermore, some embodiments of this application also provide an electrical device, which includes the battery device 100 in the above embodiments. Therefore, this electrical device has the same technical effects as the battery device 100, which will not be elaborated further here.

[0111] In one specific embodiment, such as Figure 4 and Figure 5As shown, the battery device 100 includes a housing 10, a top cover 30, and a latching mechanism 40. The latching mechanism 40 includes a first latching member 41 and a second latching member 42. The first latching member 41 is disposed on the top cover 30, and the second latching member 42 is disposed on the housing 10. The second latching member 42 includes a mounting base 421, a latching portion 422, and a locking portion 423. The mounting base 421 is disposed on the housing 10. The locking portion 423 includes a body 4231 and an elastic connecting portion 4232. One end of the body 4231 is connected to the latching portion 422, and the other end is connected to the elastic connecting portion 4232. The end of the elastic connecting portion 4232 away from the latching portion 422 is connected to the mounting base 421.

[0112] The top cover 30 is placed over the opening of the housing 10, with the first latching member 41 and the second latching member 42 positioned opposite each other. At this time, the latching part 422 is in a separated state. The latching part 422 is then engaged with the first latching member 41, switching the latching part 422 from a separated state to an engaged state. The engaged first latching member 41 and the second latching member 42 can connect the top cover 30 and the housing 10 together.

[0113] When the latching part 422 switches from the disengaged state to the engaged state, the locking part 423 is in the active state, and the body 4231 is in the first position. At this time, pressure is applied to the body 4231 toward the housing 10, and the body 4231 can move relative to the mounting base 421.

[0114] When the locking part 423 switches from the active state to the locked state, the body 4231 moves from the first position to the second position and directly connects with the mounting base 421. During this process, the elastic connecting part 4232 is compressed and undergoes elastic deformation. When the locking part 423 is released from the locked state, that is, when the body 4231 is no longer directly connected to the mounting base 421, the body 4231 can move from the second position to the first position under the action of the elastic restoring force of the elastic connecting part 4232, so that the body 4231 directly returns to its active position.

[0115] In summary, using the snap-fit ​​mechanism 40 to assemble the top cover 30 and the housing 10 simplifies the assembly process and improves efficiency compared to using bolts or other components. Secondly, the second snap-fit ​​component 42 features a snap-fit ​​part 422 and a locking part 423. When the snap-fit ​​part 422 engages with the first snap-fit ​​component 41, the locking part 423 indicates to the user whether the second snap-fit ​​component 42 is properly assembled, reducing the probability of omissions during assembly. Furthermore, when the locking part 423 is locked, it provides secondary fixation to the snap-fit ​​part 422, improving the connection stability between the first snap-fit ​​component 41 and the second snap-fit. This reduces the probability of the snap-fit ​​mechanism 40 accidentally opening, leading to a seal failure between the top cover 30 and the housing 10.

[0116] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0117] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A battery device, characterized in that, include: Battery cell; The housing contains the battery cells. The top cover fits over the opening of the box body; The latching mechanism includes a first latching member and a second latching member. One of the first latching member and the second latching member is disposed on the upper cover, and the other is disposed on the housing. The second latching member includes a mounting base, a latching part, and a locking part. The mounting base is disposed on the housing or the upper cover. The latching part is movably connected to the mounting base and has a latching state that is engaged with the first latching member and a disengaged state that is separated from the first latching member. One end of the locking part is connected to the latching part, and the other end is movably connected to the mounting base. The locking part has a locked state that is locked to the mounting base and a movable state that can move relative to the mounting base.

2. The battery device according to claim 1, characterized in that, The locking part includes a body and an elastic connecting part. One end of the body is connected to the snap-fit ​​part, and the other end is connected to the elastic connecting part. The end of the elastic connecting part away from the body is connected to the mounting base. When the locking part is in the locked state, the elastic connecting part is compressed and undergoes elastic deformation, and the body is connected to the mounting base.

3. The battery device according to claim 2, characterized in that, The mounting base has a through hole and a receiving groove communicating with the through hole. The body has a locking block protruding from one side of the mounting base. When the locking part is in the locked state, part of the locking block is received in the receiving groove and engages with the through hole.

4. The battery device according to claim 3, characterized in that, The mounting base is constructed as a plate-like structure, which protrudes away from the housing to form the receiving groove.

5. The battery device according to claim 3, characterized in that, The elastic connection includes a first end and a second end disposed opposite to each other, and a through deformation cavity is formed between the first end and the second end, wherein the locking block is placed inside the deformation cavity.

6. The battery device according to claim 2, characterized in that, The locking part also includes a rotating shaft, which is disposed on the outer wall of the housing and rotatably connected to the end of the body away from the mounting base. The body is capable of rotating relative to the mounting base about the axis of the rotating shaft.

7. The battery device according to claim 6, characterized in that, The buckle is fixedly connected to one end of the main body connected to the rotating shaft, and the main body can drive the buckle to rotate.

8. The battery device according to claim 7, characterized in that, The first fastening component includes an arc-shaped component that protrudes toward the fastening portion and forms a groove; the fastening portion protrudes around the end connected to the body and together with the end to form a closed structure with a channel. When the latching part is in the latching state, part of the arc-shaped part passes through the channel and confines part of the latching part within the slot.

9. The battery device according to any one of claims 1 to 8, characterized in that, The top cover has an annular groove that surrounds its circumference. The battery device also includes an annular seal located within the annular groove. When the top cover is closed on the housing, a portion of the housing extends into the annular groove and contacts the groove wall and the annular seal.

10. The battery device according to any one of claims 1 to 8, characterized in that, The first fastener is located on the outer side wall of the top cover, and the second fastener is located on the outer side wall of the box body.

11. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 10.

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