Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device. The battery device comprises a box body, a battery monomer and a lock assembly, wherein the battery monomer is accommodated in the box body; the lock assembly is connected to the exterior of the box body, the lock assembly comprises a locking piece and a protection piece, the locking piece comprises a first barrel and a lock body, a first cavity is formed in the first barrel, the lock body is movably arranged on the first barrel and used for being detachably connected with the electric device, and a part of the lock body is arranged in the first cavity. The protection part and the first cavity are arranged in the first direction and connected to the first barrel, the protection part is used for separating the first cavity from the external environment and comprises a first protection body and a second protection body which are arranged in the first direction in a spaced mode, and the first protection body and the second protection body are both configured to be capable of moving relative to the first barrel under the action of external force. The locking and unlocking mechanism can enter the first cavity to drive the lock body to move. According to the invention, the reliability of the battery device can be effectively improved.

Description

Technical Field

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

[0002] With the development of new energy technology, batteries are used more and more widely, for example, in mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes and electric tools, etc.

[0003] In the development of battery technology, the reliability of battery devices will directly affect the reliability, cost of use and user experience of terminal products. Therefore, how to effectively improve the reliability of battery devices is a technical issue that needs to be continuously improved in battery technology. Utility Model Content

[0004] In view of the above problems, the present application provides a battery device and an electrical device, which can effectively improve the reliability of the battery device.

[0005] In a first aspect, an embodiment of the present application provides a battery device, the battery device includes a box, a battery cell and a lock assembly, the battery cell is accommodated inside the box. The lock assembly is connected to the outside of the box, the lock assembly includes a locking member and a protective member, the locking member includes a first cylinder and a lock body, a first cavity is provided in the first cylinder, the lock body is movably arranged in the first cylinder and is used to be detachably connected to the electrical device, and a part of the lock body is arranged in the first cavity.

[0006] The protective member and the first cavity are arranged along the first direction and connected to the first cylinder. The protective member is used to separate the first cavity from the external environment. The protective member includes a first protective body and a second protective body arranged at intervals along the first direction. The first protective body and the second protective body are both configured to be able to move relative to the first cylinder under the action of external force, so that the locking and unlocking mechanism can enter the first cavity to drive the lock body to move.

[0007] The first protective body and the second protective body of the above technical solution can both provide a certain shielding effect on the first cavity, forming a double layer of protection for the first cavity, so as to effectively reduce the risk of impurities in the external environment entering the first cavity and damaging the lock body, thereby effectively improving the reliability of the lock assembly, and further improving the reliability of the battery device as a whole. In addition, the structures of the first protective body and the second protective body can be flexibly adjusted and matched to meet different practical application requirements, thereby improving the applicability of the lock assembly.

[0008] In some embodiments of the first aspect, the protective member further includes a second cylinder body. The first protective body is connected to one side of the second cylinder body close to the first cavity along the first direction, and the second protective body is connected to one side of the second cylinder body away from the first cavity along the first direction. A channel is provided inside the second cylinder body. The channel extends along the first direction and penetrates the second cylinder body, and the channel is connected between the first protective body and the second protective body.

[0009] Through the above technical solution, by introducing the second cylinder body, the channel of the second cylinder body can play a certain positioning role for the unlocking and locking mechanism, so as to reduce the risk of excessive unnecessary friction between the unlocking and locking mechanism and the locking member due to positioning errors, and can improve the service life of the lock assembly.

[0010] In some embodiments of the first aspect, along the first direction and in the direction from the second protective body to the first protective body, the area of the cross-section perpendicular to the first direction of the channel gradually decreases.

[0011] The above technical solution can further improve the guiding ability of the channel, so as to further reduce the wear risk of the locking member.

[0012] In some embodiments of the first aspect, the area of the cross-section perpendicular to the first direction of the first protective body is smaller than the area of the cross-section perpendicular to the first direction of the second protective body. It can better fit the channel with a conical structure, reduce the space occupancy rate of the first protective body, and improve the consistency of the protective member.

[0013] In some embodiments of the first aspect, a second cavity is further provided inside the first cylinder body. The second cavity is arranged on the side of the first cavity away from the lock body along the first direction, and at least part of the second cylinder body is accommodated in the second cavity.

[0014] Through the above technical solution, by integrating at least part of the second cylinder body into the locking member, the space occupancy rate of the protective member can be reduced, which helps to improve the energy density of the battery device. Moreover, it can also reduce the assembly gap between the protective member and the locking member, and further reduce the risk of impurities in the external environment entering the first cavity and damaging the lock body.

[0015] In some embodiments of the first aspect, the second cylinder body includes a main body portion and an installation portion. The installation portion is connected to one side of the main body portion away from the first cavity along the first direction. At least part of the main body portion is accommodated in the second cavity, and the installation portion is arranged outside the first cylinder body. The area of the cross-section perpendicular to the first direction of the installation portion is larger than the area of the cross-section perpendicular to the first direction of the first cylinder body.

[0016] The above technical solution not only helps to improve the connection firmness between the protective member and the locking member, but also improves the connection firmness between the lock assembly and the box body by introducing the mounting portion. In addition, the mounting portion can also limit the excessive movement of the protective member along the first direction, reducing the difficulty of assembling the protective member and the locking member.

[0017] In some embodiments of the first aspect, the mounting portion abuts against the first cylinder, which can further improve the connection stability between the protective member and the locking member.

[0018] In some embodiments of the first aspect, the elastic modulus of the second barrel is less than the elastic modulus of the first barrel.

[0019] The first cylinder of the above technical solution has a lower elastic modulus and can more effectively support the lock body. The second cylinder has a higher elastic modulus, which can reduce the scratches on the first cylinder during the assembly of the second cylinder and reduce the rigid contact between the locking and unlocking mechanism and the second cylinder, thereby increasing the service life of the lock assembly.

[0020] In some embodiments of the first aspect, the first protective body includes a plurality of first valves, the plurality of first valves are arranged along the circumference of the first cylinder, and the plurality of first valves are used to separate the first cavity from the external environment.

[0021] The first protective body of this embodiment achieves efficient sealing and protection of the first cavity by adopting a design of multiple first valves. The first valves are arranged along the circumference of the first cylinder, which can not only isolate the external environment from the first cavity in all directions, but also maintain the operability of the overall structure. In addition, the number, material and arrangement of the first valves can be flexibly adjusted to meet different practical application requirements, thereby improving the adaptability of the lock assembly.

[0022] In some embodiments of the first aspect, at least two first valves of the plurality of first valves partially overlap along the first direction.

[0023] The above technical solution can reduce the risk of gaps being generated between the multiple first valves, thereby further improving the sealing and protection effect of the first protective body on the first cavity.

[0024] In some embodiments of the first aspect, the second protective body includes a plurality of second valves, the plurality of second valves are arranged along the circumference of the first cylinder, and the plurality of second valves are used to separate the first cavity from the external environment.

[0025] In this embodiment, the second protective body realizes an efficient sealing and protection effect on the first cavity by adopting the design of multiple second valves. The second valves are arranged circumferentially along the first cylinder body, which can not only isolate the external environment from the first cavity in all directions, but also maintain the operability of the overall structure. Moreover, by flexibly adjusting the number, material, and arrangement of the second valves, it can adapt to different actual application requirements and improve the adaptability of the lock assembly. In addition, the cooperation of multiple second valves and multiple first valves can further improve the sealing and protection effect of the protective member on the first cavity.

[0026] In some embodiments of the first aspect, at least two of the multiple second valves partially overlap in the first direction.

[0027] The above technical solution can reduce the risk of gaps generated between the multiple second valves, thereby further improving the sealing and protection effect of the second protective body on the second cavity.

[0028] In some embodiments of the first aspect, the overlapping portions of the multiple first valves and the overlapping portions of the multiple second valves do not overlap in the first direction.

[0029] In this embodiment, even if gaps are generated between the multiple first valves or between the multiple second valves, the gaps between the two are not easily directly conducted, resulting in impurities in the external environment entering the first cavity. In this way, the sealing and protection effect of the protective member on the second cavity can be further improved, and the reliability of the product can be further enhanced.

[0030] In some embodiments of the first aspect, the second protective body includes an elastic ring. The elastic ring extends circumferentially along the first cylinder body. The elastic ring includes an elastic main body and a through hole. The through hole penetrates the elastic main body in the first direction. The elastic main body is used to apply a force to drive the unlocking and locking mechanism to move closer to the through hole, and the through hole is used to allow the unlocking and locking mechanism to pass through to enter the first cavity to drive the lock body to move.

[0031] The above technical solution can further improve the guiding performance of the protective member, increase the positioning error tolerance of the unlocking and locking mechanism, and contribute to improving the assembly efficiency of the battery device.

[0032] In some embodiments of the first aspect, the first protective body is an elastic body, and / or the second protective body is an elastic body.

[0033] When the unlocking and locking mechanism passes through the first protective body and the second protective body, the good elastic ability in the above technical solution can make the first protective body and the second protective body closely fit on the outer surface of the unlocking and locking mechanism, effectively improving the tightness of the first cavity during the replacement process of the battery device, so as to further improve the reliability of the battery device.

[0034] In a second aspect, the present application provides an electrical device, which includes the battery device provided in any of the embodiments of the first aspect, and the battery device is used to store or provide electrical energy.

[0035] The above description is only an overview of the technical solution of the present application. In order to be able to understand the technical means of the present application more clearly, it can be implemented in accordance with the content of the description. And in order to make the above and other purposes, features and advantages of the present application more obvious and understandable, the following specifically describes the specific embodiments of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present application. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0037] Figure 1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0038] Figure 2 is an exploded structural diagram of a battery device provided in some embodiments of the present application;

[0039] Figure 3 is a front view structural diagram of a lock assembly of a battery device provided in some embodiments of the present application;

[0040] Figure 4 is Figure 3 a sectional structural diagram taken along A-A;

[0041] Figure 5 is a front view structural diagram of a lock assembly of another battery device provided in some embodiments of the present application;

[0042] Figure 6 is Figure 5 a bottom view structural diagram of the lock assembly shown;

[0043] Figure 7 is Figure 6 a sectional structural diagram taken along B-B;

[0044] Figure 8 is a perspective three-dimensional structural diagram of a protective member of a battery device provided in some embodiments of the present application;

[0045] Figure 9 is Figure 8 a perspective top view structural diagram of the protective member shown;

[0046] Figure 10 is Figure 8Schematic diagram of the upward and downward views of the protective member shown;

[0047] Figure 11 Perspective three-dimensional structure diagram of the protective member of another battery device provided by some embodiments of the present application.

[0048] The reference numerals in the drawings in the specific embodiments are as follows:

[0049] 1. Vehicle; 2. Battery device; 3. Controller; 4. Motor;

[0050] 10. Box body;

[0051] 20. Battery cell;

[0052] 30. Lock assembly;

[0053] 31. Locking member; 311. First cylinder; 312. Lock body; 313. First cavity;

[0054] 32. Protective member; 321. First protective body; 3211. First valve; 322. Second protective body; 3221. Second valve; 3222. Elastic ring; 32221. Elastic main body; 32222. Through hole; 323. Second cylinder; 3231. Main body part; 3232. Installation part; 324. Channel;

[0055] X. First direction. Specific embodiments

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts fall within the scope of protection of the present application.

[0057] Unless otherwise defined, all technical and scientific terms used in the present application have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present application belongs; the terms used in the description of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application; the terms "including" and "having" and any variations thereof in the description and claims of the present application and the above drawings are intended to cover non-exclusive inclusion. The terms "first", "second", etc. in the description and claims of the present application or the above drawings are used to distinguish different objects and are not used to describe a specific order or primary-secondary relationship.

[0058] References to "embodiments" in this application mean that the specific features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of this application. The phrase appears in various places in the specification and does not necessarily refer to the same embodiment each time, nor are they independent or alternative embodiments mutually exclusive of other embodiments.

[0059] In the description of this application, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled", "attached" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0060] The term "and / or" in this application is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " in this application generally represents an "or" relationship between the associated objects before and after.

[0061] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, in different embodiments, the detailed description of the same components is omitted. It should be understood that the thickness, length, width, etc. of various components in the embodiments of this application shown in the drawings, as well as the overall thickness, length, width, etc. of the integrated device, are only illustrative and should not constitute any limitation to this application.

[0062] The term "plurality" as used in this application refers to two or more (including two).

[0063] The term "parallel" in this application includes not only the case of absolute parallelism, but also the case of approximately parallelism conventionally recognized in engineering; at the same time, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximately perpendicularity conventionally recognized in engineering.

[0064] In this application, the battery cell can include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell can be in the shape of a cylinder, a flat body, a cuboid, or other shapes, and the embodiments of this application are also not limited thereto.

[0065] The battery device mentioned in the embodiments of this application can include one or more battery cells to provide a single physical module with higher voltage and capacity. When there are multiple battery cells, the multiple battery cells are connected in series, parallel, or in a hybrid connection through a busbar component.

[0066] In some embodiments, the battery device may be a battery module; when there are multiple battery cells, the multiple battery cells are arranged and fixed to form a battery module.

[0067] In some embodiments, the battery device may be a battery pack, which includes a box body and battery cells, and the battery cells or battery modules are accommodated in the box body.

[0068] In some embodiments, the box body may be part of the chassis structure of a vehicle. For example, part of the box body may become at least part of the floor of the vehicle, or part of the box body may become at least part of the cross beams and longitudinal beams of the vehicle.

[0069] In some embodiments, the battery device may be an energy storage device. The energy storage device includes an energy storage container, an energy storage cabinet, etc.

[0070] With the progress of technology, the battery industry has developed rapidly, and the market share and usage frequency of electrical devices have also become higher and higher. Electrically driven vehicles such as electric vehicles have gradually appeared in various application scenarios. At the same time, to improve the convenience of electrical devices, especially electrically driven vehicles, battery swapping stations for rapid battery replacement have emerged on the market.

[0071] However, electrical devices need to perform battery swapping operations frequently. In the battery swapping process, a locking and unlocking mechanism is required to drive the locking component to lock or unlock, so that the battery device is tightly fixed to or separated from the electrical equipment. Therefore, the reliability of the locking component will directly affect the battery swapping efficiency and the reliability of the battery device.

[0072] In the related art, during the process of locking or unlocking the locking component by the locking and unlocking mechanism or during the daily use of the battery device, moisture or particulate impurities in the external environment easily enter the interior of the locking component, which is likely to damage the locking component, resulting in the failure of the locking component and seriously affecting the reliability of the battery device.

[0073] Based on the above considerations, the embodiments of the present application provide a battery device, which includes a box body, battery cells and a locking component. The battery cells are accommodated inside the box body. The locking component is connected to the outside of the box body. The locking component includes a locking member and a protection member. The locking member includes a first cylinder body and a lock body. A first cavity is provided inside the first cylinder body. The lock body is movably arranged in the first cylinder body and is used for detachably connecting with an electrical device, and a part of the lock body is arranged in the first cavity.

[0074] The protective member and the first cavity are arranged along the first direction and connected to the first cylinder. The protective member is used to separate the first cavity from the external environment. The protective member includes a first protective body and a second protective body arranged at intervals along the first direction. The first protective body and the second protective body are both configured to be able to move relative to the first cylinder under the action of external force, so that the locking and unlocking mechanism can enter the first cavity to drive the lock body to move.

[0075] The first protective body and the second protective body can both provide a certain shielding effect on the first cavity, forming a double layer of protection for the first cavity, so as to effectively reduce the risk of impurities in the external environment entering the first cavity and damaging the lock body, thereby effectively improving the reliability of the lock assembly, and further improving the reliability of the battery device as a whole. In addition, the structures of the first protective body and the second protective body can be flexibly adjusted and matched to meet different practical application requirements, thereby improving the applicability of the lock assembly.

[0076] The technical solutions described in the embodiments of the present application are applicable to battery devices and electrical devices using the battery devices.

[0077] Electrical devices may be vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, electric tools, etc. Vehicles may be fuel vehicles, gas vehicles or new energy vehicles, and new energy vehicles may be pure electric vehicles, hybrid vehicles or extended-range vehicles, etc. Spacecraft include aircraft, rockets, space shuttles and spacecrafts, etc. Electric toys include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric airplane toys, etc. Electric tools include metal cutting electric tools, grinding electric tools, assembly electric tools and railway electric tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators and electric planers, etc.

[0078] It should be understood that the technical solutions described in the embodiments of the present application are not limited to the battery devices and electrical devices described above, but can also be applied to all battery devices including battery boxes and electrical devices using battery devices. However, for the sake of simplicity, the following embodiments are described using electric vehicles as examples.

[0079] Figure 1 A schematic diagram of the structure of a vehicle provided for some embodiments of the present application.

[0080] Continue to refer Figure 1 The vehicle 1 is provided with a battery device 2 inside, and the battery device 2 can be provided at the bottom, head, or tail of the vehicle 1. The battery device 2 can be used for powering the vehicle 1, for example, the battery device 2 can be used as an operating power source for the vehicle 1.

[0081] The vehicle 1 may further include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, for the working power requirements during the start-up, navigation, and driving of the vehicle 1.

[0082] In some embodiments of the present application, the battery device 2 can not only be used as the operating power source of the vehicle 1, but also as the driving power source of the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0083] Figure 2 The schematic explosion structure diagram of a battery device provided by some embodiments of the present application Figure 3 The schematic front view structure diagram of the lock assembly of a battery device provided by some embodiments of the present application Figure 4 is Figure 3 The schematic cross-sectional structure diagram along A-A of

[0084] Continuing to refer to Figures 2 to 4 , some embodiments of the present application provide a battery device. The battery device includes a box body 10, battery cells 20, and a lock assembly 30. The battery cells 20 are accommodated inside the box body 10. The lock assembly 30 is connected to the outside of the box body 10. The lock assembly 30 includes a locking member 31 and a protection member 32. The locking member 31 includes a first cylinder body 311 and a lock body 312. A first cavity 313 is provided inside the first cylinder body 311. The lock body 312 is movably arranged in the first cylinder body 311 and is used for detachably connecting with an electrical device, and a part of the lock body 312 is arranged in the first cavity 313.

[0085] The protection member 32 is arranged along the first direction X and connected to the first cylinder body 311 with respect to the first cavity 313. The protection member 32 is used to isolate the first cavity 313 from the external environment. The protection member 32 includes a first protection body 321 and a second protection body 322 arranged at intervals along the first direction X. Both the first protection body 321 and the second protection body 322 are configured to be able to move relative to the first cylinder body 311 under an external force, so that the unlocking and locking mechanism can enter the first cavity 313 to drive the lock body 312 to move.

[0086] As an example, the box body 10 can have various structures, such as a cylinder, a cuboid, etc. The battery cells 20 can be one or multiple. If there are multiple battery cells 20, the multiple battery cells 20 can be connected in series, in parallel, or in a mixed connection. A mixed connection means that there are both series and parallel connections among the multiple battery cells 20. The multiple battery cells 20 can be directly connected in series, in parallel, or in a mixed connection together, and then the whole formed by the multiple battery cells 20 is accommodated inside the box body 10; of course, it can also be that multiple battery cells 20 are first connected in series, in parallel, or in a mixed connection to form battery modules, and then the multiple battery modules are connected in series, in parallel, or in a mixed connection to form a whole and are accommodated inside the box body 10.

[0087] In some examples, there are multiple battery cells 20. The multiple battery cells 20 are first connected in series, parallel, or in a combined series-parallel manner to form a battery module. Then, multiple battery modules are connected in series, parallel, or in a combined series-parallel manner to form an entirety and are accommodated within the box body 10.

[0088] The multiple battery cells 20 in the battery module can be electrically connected through a busbar component to achieve parallel, series, or combined series-parallel connection of the multiple battery cells 20 in the battery module.

[0089] The lock body 312 is movably disposed on the first cylinder 311. The lock body 312 has a locked state and an unlocked state. The lock body 312 is configured to be engaged with the electrical device when in the locked state, so that the battery device is installed on the electrical device. The lock body 312 is configured to be disengaged from the electrical device when in the unlocked state, to allow the battery device to be detached from the electrical device.

[0090] The lock body 312 can be detachably connected to the first cylinder 311, or can be integrally provided on the first cylinder 311. The lock body 312 can be directly connected to the first cylinder 311, or can be restricted on the first cylinder 311 through other components.

[0091] The first cylinder 311 has a hollow structure, and a first cavity 313 is formed inside it, providing an activity space for the lock body 312. A part of the lock body 312 is disposed inside the first cavity 313, and another part is disposed outside the first cylinder 311. The part of the lock body 312 disposed outside the first cylinder 311 is mainly used for detachable connection with the electrical device, and the part of the lock body 312 disposed inside the first cavity 313 is mainly used for cooperation with the locking and unlocking mechanism, so that the locking and unlocking mechanism can drive the lock body 312 to move, enabling the lock body 312 to switch between the locked state and the unlocked state.

[0092] Exemplarily, the lock body 312 includes a mating part and a lock head that are connected. The lock head is disposed outside the first cylinder 311 and is used for detachable connection with the electrical device. The mating part is disposed inside the first cavity 313 and is used for cooperation with the locking and unlocking mechanism, so that the locking and unlocking mechanism can drive the lock body 312 to move, enabling the lock body 312 to switch between the locked state and the unlocked state.

[0093] In some examples, the lock body 312 can further include a connecting rod. The connecting rod is connected between the lock head and the mating part. A part of the connecting rod is disposed outside the first cylinder 311, and another part is disposed inside the first cavity 313.

[0094] As an example, the unlocking and locking mechanism may include a driving component, a positioning component, and a mating rod. The driving component is connected to the mating rod and is used to drive the mating rod to move. The positioning component is connected to the mating rod and is used to detect the alignment between the mating rod and the lock assembly 30. The mating rod is used to extend into the first cavity 313 to cooperate with the lock body 312 and drive the lock body 312 to move, so that the lock body 312 can be switched between the locked state and the unlocked state.

[0095] Optionally, the first cylinder 311 may be made of, but not limited to, metal or non-metal materials. For example, the metal materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc. The non-metal materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0096] Optionally, the lock body 312 may be made of, but not limited to, metal or non-metal materials. For example, the metal materials may be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc. The non-metal materials may be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0097] The meaning that the protection member 32 is arranged along the first direction X with respect to the first cavity 313 is that the protection member 32 is arranged on one side of the first cavity 313 along the first direction X. Exemplarily, the protection member 32 is arranged on the side of the first cavity 313 along the first direction X away from the lock head.

[0098] The protection member 32 may be detachably connected to the first cylinder 311, or may be integrally provided on the first cylinder 311. The protection member 32 may be directly connected to the first cylinder 311, or may be restricted on the first cylinder 311 through other components.

[0099] As an example, the protection member 32 may be arranged outside the first cylinder 311, that is to say, both the first protection body 321 and the second protection body 322 are arranged outside the first cylinder 311.

[0100] As an example, part of the protection member 32 may be arranged outside the first cylinder 311 and part may be arranged inside the first cylinder 311. That is to say, it may be that the first protection body 321 is arranged outside the first cylinder 311 and the second protection body 322 is arranged inside the first cylinder 311; or it may be that the second protection body 322 is arranged outside the first cylinder 311 and the first protection body 321 is arranged inside the first cylinder 311.

[0101] As an example, the protection member 32 may be arranged inside the first cylinder 311, that is to say, both the first protection body 321 and the second protection body 322 are arranged inside the first cylinder 311.

[0102] The meaning that the protection member 32 is used to partition the first cavity 313 from the external environment is that when the protection member 32 is in a non-operating state, that is, when the protection member 32 is not under an external force, the protection member 32 can shield the first cavity 313 to reduce the risk of impurities in the external environment entering the first cavity 313 and damaging the lock body 312.

[0103] Exemplarily, when the protection member 32 is in a non-operating state, it can be that one of the first protection body 321 and the second protection body 322 can partition the first cavity 313 from the external environment, or it can be that both the first protection body 321 and the second protection body 322 can partition the first cavity 313 from the external environment.

[0104] When it is necessary to lock or unlock the lock body 312 through the locking and unlocking mechanism, the locking and unlocking mechanism will move along the first direction X through the protection member 32 and enter the first cavity 313. During this process, the locking and unlocking mechanism will apply an extrusion force to the first protection body 321 and the second protection body 322. Under the action of the extrusion force, the first protection body 321 and the second protection body 322 will deform in the direction close to the first cavity 313, so as to provide a channel 324 for the locking and unlocking mechanism to enter the first cavity 313, so that the locking and unlocking mechanism can smoothly enter the first cavity 313 to drive the lock body 312 to move.

[0105] Moreover, during the process of the locking and unlocking mechanism entering the first cavity 313, the first protection body 321 and the second protection body 322 can abut against the outer surface of the locking and unlocking mechanism to reduce the risk of impurities in the external environment entering the first cavity 313.

[0106] Optionally, the protection member 32 can be made of, but is not limited to, metal or non-metal materials. For example, the metal material can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metal material can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0107] As an example, the first protection body 321 and the second protection body 322 can be designed with an elastic material or a flexible structure so that they can move easily under an external force. For example, rubber or silica gel, etc.

[0108] Both the first protective body 321 and the second protective body 322 of the above technical solution can play a certain shielding role for the first cavity 313, forming a double-layer protection for the first cavity 313, so as to effectively reduce the risk of impurities in the external environment entering the first cavity 313 and damaging the lock body 312, thereby effectively improving the reliability of the lock assembly 30, and further improving the reliability of the overall battery device. In addition, the structures of the first protective body 321 and the second protective body 322 can be flexibly adjusted and matched to meet different actual application requirements, and the applicability of the lock assembly 30 can be improved.

[0109] In some embodiments, the protective member 32 further includes a second cylinder 323. The first protective body 321 is connected to one side of the second cylinder 323 close to the first cavity 313 along the first direction X, and the second protective body 322 is connected to one side of the second cylinder 323 far from the first cavity 313 along the first direction X. A channel 324 is provided inside the second cylinder 323. The channel 324 extends along the first direction X and penetrates the second cylinder 323. The channel 324 is connected between the first protective body 321 and the second protective body 322.

[0110] It can be understood that when the locking and unlocking mechanism needs to lock or unlock the lock body 312, the locking and unlocking mechanism needs to first position the lock assembly 30, and then move along the first direction X into the first cavity 313 to drive the lock body 312 to move. During this process, the locking and unlocking mechanism is prone to unnecessary friction with the inner wall of the first cavity 313 or the lock body 312 due to positioning errors, resulting in a low service life of the locking member 31.

[0111] In this embodiment, when the locking and unlocking mechanism needs to lock or unlock the lock body 312, the locking and unlocking mechanism moves along the first direction X and will first pass through the second protective body 322, then through the channel 324, and finally through the first protective body 321 into the first cavity 313. During this process, the channel 324 of the second cylinder 323 can play a certain positioning role for the locking and unlocking mechanism, so as to reduce the risk of excessive unnecessary friction between the locking and unlocking mechanism and the locking member 31 due to positioning errors.

[0112] The first protective body 321 can be detachably connected to the second cylinder 323 or integrally provided on the second cylinder 323. The first protective body 321 can be directly connected to the second cylinder 323 or restricted on the second cylinder 323 through other components.

[0113] The second protective body 322 can be detachably connected to the second cylinder 323 or integrally provided on the second cylinder 323. The second protective body 322 can be directly connected to the second cylinder 323 or restricted on the second cylinder 323 through other components.

[0114] As an example, the second cylinder 323 can be disposed outside the first cylinder 311 or inside the first cylinder 311.

[0115] Optionally, the second cylinder 323 can be made of, but not limited to, metal or non-metal materials. For example, the metal materials can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, or stainless steel, etc., and the non-metal materials can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide, or polyamide, etc.

[0116] As an example, the first protector 321, the second protector 322, and the second cylinder 323 can be made of the same material to simplify the preparation process and help reduce costs.

[0117] Through the introduction of the second cylinder 323 in the above technical solution, the channel 324 of the second cylinder 323 can play a certain positioning role for the unlocking and locking mechanism, so as to reduce the risk of excessive unnecessary friction between the unlocking and locking mechanism and the locking member 31 caused by positioning errors, and can improve the service life of the lock assembly 30.

[0118] In some embodiments, the first protector 321, the second protector 322, and the second cylinder 323 are of an integrally formed structure. On the one hand, there is no need to connect the first protector 321, the second protector 322, and the second cylinder 323 through an additional connection process, which simplifies the manufacturing process flow. At the same time, compared with connecting the first protector 321, the second protector 322, and the second cylinder 323 through an additional connection process, the integrally formed first protector 321, second protector 322, and second cylinder 323 have higher structural strength.

[0119] In some embodiments, along the first direction X and in the direction from the second protector 322 to the first protector 321, the area of the cross-section of the channel 324 perpendicular to the first direction X gradually decreases. In other words, the channel 324 is a conical structure with a decreasing radial dimension along the first direction X and in the direction from the second protector 322 to the first protector 321.

[0120] The above technical solution can further improve the guiding ability of the channel 324 to further reduce the wear risk of the locking member 31.

[0121] In some embodiments, the area of the cross-section of the first protector 321 perpendicular to the first direction X is smaller than the area of the cross-section of the second protector 322 perpendicular to the first direction X.

[0122] It can better adapt to the conical channel 324, reduce the space occupancy rate of the first protector 321, and improve the consistency of the protector 32.

[0123] In some embodiments, a second cavity is further provided inside the first cylinder body 311. The second cavity is disposed on a side of the first cavity 313 away from the lock body 312 along the first direction X, and at least a part of the second cylinder body 323 is received in the second cavity.

[0124] Exemplarily, a part of the second cylinder body 323 may be received in the second cavity and another part may be located outside the first cylinder body 311; or the second cylinder body 323 may be entirely received in the second cavity.

[0125] By integrating at least a part of the second cylinder body 323 into the locking member 31, the above technical solution can reduce the space occupancy rate of the protection member 32, thereby contributing to improving the energy density of the battery device. Moreover, it can also reduce the assembly gap between the protection member 32 and the locking member 31, further reducing the risk of impurities in the external environment entering the first cavity 313 and damaging the lock body 312.

[0126] Figure 5 FIG. 10 is a front view structural schematic diagram of a lock assembly of another battery device provided by some embodiments of the present application. Figure 6 is Figure 5 a bottom view structural schematic diagram of the shown lock assembly. Figure 7 is Figure 6 a cross-sectional structural schematic diagram taken along B-B of FIG. 10.

[0127] Continuing to refer to Figures 5 to 7 , in some embodiments, the second cylinder body 323 includes a main body portion 3231 and a mounting portion 3232. The mounting portion 3232 is connected to a side of the main body portion 3231 away from the first cavity 313 along the first direction X. At least a part of the main body portion 3231 is received in the second cavity, and the mounting portion 3232 is disposed outside the first cylinder body 311. The area of the cross-section of the mounting portion 3232 perpendicular to the first direction X is larger than the area of the cross-section of the first cylinder body 311 perpendicular to the first direction X.

[0128] Exemplarily, the main body portion 3231 is the part of the second cylinder body 323 that plays a guiding role, and the mounting portion 3232 is the part of the second cylinder body 323 used for fixedly connecting to the box body 10. The area of the cross-section of the mounting portion 3232 perpendicular to the first direction X is larger than the area of the cross-section of the first cylinder body 311 perpendicular to the first direction X, so that the mounting portion 3232 has a larger connection contact area relative to the main body portion 3231.

[0129] The mounting portion 3232 may be detachably connected to the main body portion 3231, or may be integrally provided on the main body portion 3231. The mounting portion 3232 may be directly connected to the main body portion 3231, or may be restricted on the main body portion 3231 through other components.

[0130] The main body 3231 can be partially received in the second cavity and the other part located outside the first cylinder 311, or it can be entirely received in the second cavity.

[0131] Optionally, both the main body 3231 and the mounting portion 3232 can be but are not limited to being made of metal or non-metal materials. For example, the metal materials can be copper, copper alloy, aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy or stainless steel, etc., and the non-metal materials can be ceramic, polyethylene, polypropylene, polyvinyl chloride, polyimide or polyamide, etc.

[0132] As an example, the main body 3231 and the mounting portion 3232 can be made of the same material to simplify the preparation process and help reduce costs.

[0133] The above technical solution by introducing the mounting portion 3232 not only helps to improve the connection firmness between the protection member 32 and the locking member 31, but also can improve the connection firmness between the lock assembly 30 and the box body 10. In addition, the mounting portion 3232 can also limit the excessive movement of the protection member 32 in the first direction X and reduce the assembly difficulty between the protection member 32 and the locking member 31.

[0134] In some embodiments, the main body 3231 and the mounting portion 3232 are of an integrally formed structure. On the one hand, there is no need to connect the main body 3231 and the mounting portion 3232 through an additional connection process, which simplifies the manufacturing process flow. At the same time, compared with connecting the main body 3231 and the mounting portion 3232 through an additional connection process, the integrally formed main body 3231 and mounting portion 3232 have higher structural strength.

[0135] In some embodiments, the mounting portion 3232 abuts against the first cylinder 311, which can further improve the connection stability between the protection member 32 and the locking member 31.

[0136] As an example, the mounting portion 3232 can be fixedly connected to the first cylinder 311. For example, the mounting portion 3232 is adhesively bonded to the first cylinder 311, or the mounting portion 3232 is snap-fitted to the first cylinder 311, etc.

[0137] In some embodiments, the elastic modulus of the second cylinder 323 is less than the elastic modulus of the first cylinder 311.

[0138] Exemplarily, the lock body 312 is disposed on the first cylinder 311, and the first cylinder 311 plays a supporting role for the lock body 312. When the lock body 312 is subjected to external impact or vibration, the first cylinder 311 can bear part of the load to ensure the stability of the lock body 312. The first cylinder 311 has a lower elastic modulus and can more effectively support the lock body 312.

[0139] The elastic modulus of the second cylinder 323 is smaller than that of the first cylinder 311, so that the second cylinder 323 is softer than the first cylinder 311, which can reduce the scratches on the first cylinder 311 during the assembly process of the second cylinder 323. In addition, when the lock body 312 needs to be locked or unlocked by the locking and unlocking mechanism, the rigid contact between the locking and unlocking mechanism and the second cylinder 323 can be reduced, thereby reducing local stress.

[0140] As an example, the second cylinder 323 may be a flexible body or an elastic body, such as rubber or silicone.

[0141] Optionally, the second cylinder 323 may be made of a material with high strength and good flexibility, such as thermoplastic polyurethane, silicone rubber or reinforced fiber composite material, to ensure that it has sufficient strength and durability and tear resistance.

[0142] The first cylinder 311 of the above technical solution has a lower elastic modulus and can more effectively support the lock body 312. The second cylinder 323 has a higher elastic modulus, which can reduce the scratches on the first cylinder 311 during the assembly of the second cylinder 323 and reduce the rigid contact between the locking and unlocking mechanism and the second cylinder 323, thereby increasing the service life of the lock assembly 30.

[0143] For example, the elastic modulus of the first cylinder 311 and the second cylinder 323 may be measured by a static mechanical test, such as a tensile test, a compression test, or a bending test.

[0144] Figure 8 A perspective three-dimensional structural diagram of a protective component of a battery device provided in some embodiments of the present application.

[0145] Continue to refer Figure 8 In some embodiments, the first protective body 321 includes a plurality of first valves 3211 , which are arranged along the circumference of the first cylinder 311 , and the plurality of first valves 3211 are used to separate the first cavity 313 from the external environment.

[0146] Exemplarily, the plurality of first valves 3211 are in close contact along the circumference of the first cylinder 311 so as to jointly shield the first cavity 313 , thereby isolating the first cavity 313 from the external environment.

[0147] In some examples, the plurality of first valves 3211 may be connected to the inner wall of the first cylinder 311 and located on a side of the first cavity 313 away from the lock body 312 along the first direction X.

[0148] In some other examples, the protection member 32 further includes a second cylinder 323, and the plurality of first valves 3211 may be connected to the inner wall of the second cylinder 323 or to the end face of the second cylinder 323 along the first direction X.

[0149] By adopting the design of the plurality of first valves 3211 in the first protection body 321 of this embodiment, an efficient sealing and protection effect on the first cavity 313 is achieved. The first valves 3211 are arranged circumferentially along the first cylinder 311, which can not only isolate the external environment from the first cavity 313 in all directions but also maintain the operability of the overall structure. Moreover, by flexibly adjusting the quantity, material, and arrangement of the first valves 3211, it can adapt to different actual application requirements and improve the adaptability of the lock assembly 30.

[0150] Exemplarily, in scenarios with high mechanical strength and high sealing requirements, the first valves 3211 can be thickened to provide higher impact resistance and stronger protection. In scenarios with lightweight requirements, the weight of the first valves 3211 can be optimized, and the optimized design of the first valves 3211 can reduce the overall structure weight while ensuring the sealing performance.

[0151] In some embodiments, the first protection body 321 further includes a first connection ring. The first connection ring is connected to the second cylinder 323. The first connection ring is provided with a first hole that penetrates the first connection ring along the first direction X, and the first hole communicates with the channel 324. The plurality of first valves 3211 are connected to the inner wall of the first connection ring and cover the first hole.

[0152] In some embodiments, the surface of the first valves 3211 is provided with anti-slip textures.

[0153] In some embodiments, the surface of the first valves 3211 is provided with corrosion-resistant coatings.

[0154] Figure 9 For Figure 8 the perspective top view structural schematic diagram of the protection member shown.

[0155] Continuing to refer to Figure 9 , in some embodiments, at least two of the plurality of first valves 3211 partially overlap along the first direction X. In other words, the projections of at least two of the plurality of first valves 3211 along the first direction X partially overlap.

[0156] As an example, each adjacent two of the plurality of first valves 3211 partially overlap along the first direction X.

[0157] The above technical solution can reduce the risk of gaps being generated between the plurality of first valves 3211 , thereby further improving the sealing and protection effect of the first protective body 321 on the first cavity 313 .

[0158] In some embodiments, the second protective body 322 includes a plurality of second valves 3221 , which are arranged along the circumference of the first cylinder 311 , and the plurality of second valves 3221 are used to separate the first cavity 313 from the external environment.

[0159] Exemplarily, the plurality of second valves 3221 are in close contact along the circumference of the first cylinder 311 so as to jointly shield the first cavity 313 , thereby isolating the first cavity 313 from the external environment.

[0160] In some examples, the plurality of second valves 3221 may be connected to the inner wall of the first cylinder 311 and located on a side of the first cavity 313 away from the lock body 312 along the first direction X.

[0161] In other examples, the protective member 32 further includes a second cylinder 323 , and the plurality of second valves 3221 may be connected to an inner wall of the second cylinder 323 , or may be connected to an end surface of the second cylinder 323 along the first direction X.

[0162] The second protective body 322 of this embodiment achieves efficient sealing and protection of the first cavity 313 by adopting a design of multiple second valves 3221. The second valves 3221 are arranged circumferentially along the first cylinder 311, which can not only isolate the external environment from the first cavity 313 in all directions, but also maintain the operability of the overall structure. In addition, the number, material and arrangement of the second valves 3221 can be flexibly adjusted to meet different practical application requirements, thereby improving the adaptability of the lock assembly 30. In addition, the cooperation of multiple second valves 3221 and multiple first valves 3211 can further improve the sealing and protection effect of the protective member 32 on the first cavity 313.

[0163] In some embodiments, the second protective body 322 also includes a second connecting ring, which is connected to the second cylinder 323. The second connecting ring is provided with a second hole, which passes through the second connecting ring along the first direction X. The second hole is connected to the channel 324, and a plurality of second valves 3221 are connected to the inner wall of the second connecting ring and cover the second hole.

[0164] In some embodiments, the surface of the second valve 3221 is provided with an anti-slip texture.

[0165] In some embodiments, the surface of the second valve 3221 is provided with a corrosion-resistant coating.

[0166] Figure 10 for Figure 8Schematic diagram of the upward and downward views of the protection member shown.

[0167] Continue to refer to Figure 10 , in some embodiments, at least two of the plurality of second valves 3221 overlap partially in the first direction X. In other words, the projections of at least two of the plurality of second valves 3221 in the first direction X overlap partially.

[0168] As an example, every two adjacent second valves 3221 among the plurality of second valves 3221 overlap partially in the first direction X.

[0169] The above technical solution can reduce the risk of gaps being generated between the plurality of second valves 3221, thereby further improving the sealing and protection effects of the second protection body 322 on the second cavity.

[0170] In some embodiments, the overlapping portions of the plurality of first valves 3211 and the overlapping portions of the plurality of second valves 3221 do not overlap in the first direction X.

[0171] Exemplarily, the projection of the overlapping portions of the plurality of first valves 3211 in the first direction X and the projection of the overlapping portions of the plurality of second valves 3221 in the first direction X do not overlap.

[0172] In this embodiment, even if gaps are generated between the plurality of first valves 3211 or between the plurality of second valves 3221, the gaps between the two are not easily directly conducted, resulting in impurities in the external environment entering the first cavity 313. In this way, the sealing and protection effects of the protection member 32 on the second cavity can be further improved, and the reliability of the product can be further improved.

[0173] Figure 11 Perspective three-dimensional structure schematic diagram of the protection member of another battery device provided in some embodiments of the present application.

[0174] Continue to refer to Figure 11 , in some embodiments, the second protection body 322 includes an elastic ring 3222, the elastic ring 3222 is arranged to extend along the circumferential direction of the first cylinder 311, the elastic ring 3222 includes an elastic main body 32221 and a through hole 32222, and the through hole 32222 penetrates through the elastic main body 32221 along the first direction X. The elastic main body 32221 is used to apply a driving force to the unlocking and locking mechanism to drive the unlocking and locking mechanism to move closer to the through hole 32222, and the through hole 32222 is used to allow the unlocking and locking mechanism to pass through to enter the first cavity 313 to drive the lock body 312 to move.

[0175] Exemplarily, when it is necessary to lock or unlock the lock body 312 through the locking and unlocking mechanism, when the locking and unlocking mechanism moves along the first direction X to reach the second protection body 322, if the locking and unlocking mechanism deviates from the through hole 32222 of the elastic ring 3222 due to positioning error, during the process of the locking and unlocking mechanism moving along the first direction X, the locking and unlocking mechanism will contact the elastic body 32221, and the elastic body 32221 will apply an elastic force to the locking and unlocking mechanism to drive the locking and unlocking mechanism to move closer to the through hole 32222, so that the locking and unlocking mechanism can smoothly enter the through hole 32222, so that the locking and unlocking mechanism can subsequently smoothly enter the channel 324 of the second cylinder 323, and then enter the first cavity 313 through the first protection body 321 to drive the lock body 312 to move.

[0176] In some examples, the elastic ring 3222 can be connected to the inner wall of the first cylinder 311 and is located on the side of the first cavity 313 away from the lock body 312 along the first direction X.

[0177] In some other examples, the protection member 32 further includes a second cylinder 323, and the elastic ring 3222 can be connected to the inner wall of the second cylinder 323 or can be connected to the end face of the second cylinder 323 along the first direction X.

[0178] The size of the through hole 32222 of the elastic ring 3222 can be adaptively designed according to the locking and unlocking mechanism, as long as the locking and unlocking mechanism can smoothly enter. For example, the radial dimension of the through hole 32222 can be the same as the outer diameter of the locking and unlocking mechanism, or the radial dimension of the through hole 32222 can be slightly smaller than the outer diameter of the locking and unlocking mechanism.

[0179] The above technical solution can further improve the guiding performance of the protection member 32, improve the positioning error tolerance rate of the locking and unlocking mechanism, and help improve the assembly efficiency of the battery device.

[0180] In some embodiments, the second protection body 322 further includes a second connecting ring. The second connecting ring is connected to the second cylinder 323. The second connecting ring is provided with a second hole. The second hole penetrates the second connecting ring along the first direction X, and the second hole communicates with the channel 324. The elastic ring 3222 is connected to the inner wall of the second connecting ring.

[0181] In some embodiments, the first protection body 321 is an elastic body.

[0182] In some embodiments, the second protection body 322 is an elastic body.

[0183] The elastic body has good flexibility, sealing performance and deformation recovery ability, enabling it to deform flexibly under external force and quickly return to its original state after the external force is removed, ensuring the continuity and reliability of the sealing performance.

[0184] The first protective body 321 and the second protective body 322 can be made of a variety of elastic materials, such as silicone rubber, fluororubber, polyurethane rubber, or nitrile rubber. Among them, silicone rubber has excellent high and low temperature resistance and can maintain elasticity and tightness in extreme environments; fluororubber is suitable for acid-base or oil-polluted environments due to its strong chemical corrosion resistance; polyurethane rubber has outstanding wear resistance and mechanical strength and is suitable for high-frequency use scenarios; nitrile rubber performs excellently in terms of oil resistance and wear resistance and is suitable for general industrial applications.

[0185] When the above technical solution passes through the first protective body 321 and the second protective body 322, the good elastic ability can make the first protective body 321 and the second protective body 322 closely fit on the outer surface of the unlocking and locking mechanism, which can effectively improve the tightness of the first cavity 313 during the replacement process of the battery device, so as to further improve the reliability of the battery device.

[0186] According to some embodiments of the present application, the present application also provides an electrical device, including the battery device of any of the above solutions, and the battery device is used to store or provide electrical energy.

[0187] If there is no special description, all embodiments and optional embodiments of the present application can be combined with each other to form a new technical solution. All technical features and optional technical features of the present application can be combined with each other to form a new technical solution.

[0188] To better understand the battery device provided by the embodiments of the present application, based on the same inventive concept, embodiments of the above battery device in actual applications are provided here for description.

[0189] The embodiments of the present application provide a battery device, which includes a box body 10, battery cells 20, and a lock assembly 30. The battery cells 20 are accommodated inside the box body 10. The lock assembly 30 is connected to the outside of the box body 10. The lock assembly 30 includes a locking member 31 and a protective member 32. The locking member 31 includes a first cylinder 311 and a lock body 312. A first cavity 313 and a second cavity are provided inside the first cylinder 311. The lock body 312 is movably arranged in the first cylinder 311 and is used for detachably connecting with the electrical device, and a part of the lock body 312 is arranged in the first cavity 313. The second cavity is arranged on the side of the first cavity 313 away from the lock body 312 along the first direction X.

[0190] The protective member 32 is an elastic body. The protective member 32 and the first cavity 313 are arranged along the first direction X and connected to the first cylinder 311. The protective member 32 is used to separate the first cavity 313 from the external environment. The protective member 32 includes a second cylinder 323, a first protective body 321 and a second protective body 322 arranged at intervals along the first direction X. The first protective body 321 is connected to a side of the second cylinder 323 close to the first cavity 313 along the first direction X, and the second protective body 322 is connected to a side of the second cylinder 323 away from the first cavity 313 along the first direction X. At least part of the second cylinder 323 is accommodated in the second cavity.

[0191] A channel 324 is provided inside the second cylinder 323. The channel 324 extends along the first direction X and penetrates the second cylinder 323. The channel 324 is connected between the first protection body 321 and the second protection body 322. Along the first direction X and in the direction in which the second protection body 322 points to the first protection body 321, the area of ​​the cross section of the channel 324 perpendicular to the first direction X gradually decreases. The first protection body 321 and the second protection body 322 are both configured to be able to move relative to the first cylinder 311 under the action of an external force, so that the locking and unlocking mechanism can enter the first cavity 313 to drive the lock body 312 to move.

[0192] The second barrel 323 includes a main body 3231 and a mounting portion 3232. The mounting portion 3232 is connected to a side of the main body 3231 away from the first cavity 313 along the first direction X. At least a portion of the main body 3231 is accommodated in the second cavity. The mounting portion 3232 is disposed outside the first barrel 311. The area of ​​the cross section of the mounting portion 3232 perpendicular to the first direction X is greater than the area of ​​the cross section of the first barrel 311 perpendicular to the first direction X. The mounting portion 3232 abuts against the first barrel 311.

[0193] The first protective body 321 includes a plurality of first valves 3211, which are arranged along the circumference of the first cylinder 311, and are used to separate the first cavity 313 from the external environment. At least two of the plurality of first valves 3211 partially overlap along the first direction X. The second protective body 322 includes a plurality of second valves 3221, which are arranged along the circumference of the first cylinder 311, and are used to separate the first cavity 313 from the external environment. At least two of the plurality of second valves 3221 partially overlap along the first direction X. The overlapping parts of the plurality of first valves 3211 and the overlapping parts of the plurality of second valves 3221 do not overlap in the first direction X.

[0194] Both the first protective body 321 and the second protective body 322 of the above technical solution can play a certain shielding role for the first cavity 313, forming a double-layer protection for the first cavity 313, so as to effectively reduce the risk of impurities in the external environment entering the first cavity 313 and damaging the lock body 312, thereby effectively improving the reliability of the lock assembly 30, and further improving the reliability of the overall battery device. In addition, the structures of the first protective body 321 and the second protective body 322 can be flexibly adjusted and matched to adapt to different actual application requirements, and the applicability of the lock assembly 30 can be improved.

[0195] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0196] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, rather than limiting them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application, and they should all be covered by the scope of the claims and the description of the present application. In particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The present application is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that: include: Box; A battery cell is contained inside the box; A lock assembly is connected to the outside of the box, the lock assembly includes a locking member and a protective member, the locking member includes a first cylinder and a lock body, the first cylinder is provided with a first cavity, the lock body is movably arranged in the first cylinder and is used for detachably connecting with the electrical device, and a part of the lock body is arranged in the first cavity, The protective member and the first cavity are arranged along a first direction and connected to the first cylinder. The protective member is used to separate the first cavity from the external environment. The protective member includes a first protective body and a second protective body arranged at intervals along the first direction. The first protective body and the second protective body are both configured to be able to move relative to the first cylinder under the action of an external force, so that the locking and unlocking mechanism can enter the first cavity to drive the lock body to move.

2. The battery device according to claim 1, characterized in that: The protective member further includes a second cylinder, the first protective body is connected to a side of the second cylinder close to the first cavity along the first direction, and the second protective body is connected to a side of the second cylinder away from the first cavity along the first direction; A channel is provided inside the second cylinder. The channel extends along the first direction and penetrates the second cylinder. The channel is connected between the first protective body and the second protective body.

3. The battery device according to claim 2, characterized in that: Along the first direction and in a direction in which the second protecting body points to the first protecting body, an area of ​​a cross section of the channel perpendicular to the first direction gradually decreases.

4. The battery device according to claim 3, characterized in that: An area of ​​a cross section of the first protecting body perpendicular to the first direction is smaller than an area of ​​a cross section of the second protecting body perpendicular to the first direction.

5. The battery device according to claim 2, characterized in that: A second cavity is further provided inside the first cylinder. The second cavity is arranged on a side of the first cavity away from the lock body along the first direction. At least a part of the second cylinder is accommodated in the second cavity.

6. The battery device according to claim 5, characterized in that: The second cylinder comprises a main body and a mounting portion, wherein the mounting portion is connected to a side of the main body away from the first cavity along the first direction, at least a portion of the main body is accommodated in the second cavity, and the mounting portion is disposed outside the first cylinder; An area of ​​a cross section of the mounting portion perpendicular to the first direction is greater than an area of ​​a cross section of the first cylinder perpendicular to the first direction.

7. The battery device according to claim 6, characterized in that: The mounting portion abuts against the first cylinder.

8. The battery device according to claim 2, characterized in that: The elastic modulus of the second cylinder is smaller than the elastic modulus of the first cylinder.

9. The battery device according to claim 1, characterized in that: The first protective body includes a plurality of first valves, which are arranged along the circumference of the first cylinder and are used to separate the first cavity from the external environment.

10. The battery device according to claim 9, characterized in that: At least two of the plurality of first valves partially overlap along the first direction.

11. The battery device according to claim 10, characterized in that: The second protective body includes a plurality of second valves, which are arranged along the circumference of the first cylinder and are used to separate the first cavity from the external environment.

12. The battery device according to claim 11, characterized in that: At least two of the plurality of second valves partially overlap along the first direction.

13. The battery device according to claim 12, characterized in that: The overlapping parts of the first valves do not overlap with the overlapping parts of the second valves in the first direction.

14. The battery device according to claim 9, characterized in that: The second protective body comprises an elastic ring, the elastic ring is extended along the circumference of the first cylinder, the elastic ring comprises an elastic body and a through hole, the through hole penetrates the elastic body along the first direction; The elastic body is used to apply a force to the locking and unlocking mechanism to drive the locking and unlocking mechanism to move close to the through hole, and the through hole is used to allow the locking and unlocking mechanism to pass through and enter the first cavity to drive the lock body to move.

15. The battery device according to any one of claims 1 to 14, characterized in that: The first protective body is an elastomer, and / or the second protective body is an elastomer.

16. An electrical device, characterized in that: The invention comprises a battery device as described in any one of claims 1 to 15, wherein the battery device is used to store or provide electrical energy.

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