Battery device and electric equipment

Abstract

The utility model discloses a battery device and electric equipment, and relates to the technical field of batteries, the battery device comprises a structural member, a functional member and a limiting member, the functional member is arranged on one side, in a first direction, of the structural member, one of the functional member and the structural member is provided with a limiting convex part, and the other one is provided with a matching concave part; the matching concave part comprises an avoiding section and a limiting section which are distributed in the second direction, the limiting convex part is matched with the matching concave part, the position of the limiting convex part in the second direction is adjustable, and the limiting convex part has a free position in the avoiding section and a limiting position in the limiting section; the limiting piece is arranged on the structural piece, abuts against the functional piece and is used for limiting the limiting protruding part to move from the limiting position to the free position. According to the technical scheme provided by the invention, the functional part can be conveniently assembled and disassembled on the structural part, and on the basis, through the arrangement of the limiting part, the functional part in the limiting position can be limited, so that the condition that the functional part is easy to loosen is improved.

Description

Technical Field

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

[0002] In new energy vehicles, the battery monitoring unit (Cell Supervision Circuit) is a monitor that is electrically connected to the individual battery cells. It is responsible for collecting information from the individual battery cells and transmitting the collected information to the Battery Management System for processing. Currently, the battery monitoring unit in the battery device is prone to loosening under long-term vibration conditions, which has an adverse effect on the reliability of the battery device. Utility Model Content

[0003] The main purpose of this application is to propose a battery device and electrical equipment that aims to improve the problem that the battery monitoring unit of current battery devices is prone to loosening under long-term vibration conditions.

[0004] In a first aspect, the battery device proposed in this application includes:

[0005] Structural components;

[0006] A functional component is disposed on one side of the structural component in a first direction. One of the functional component and the structural component has a limiting protrusion, and the other has a mating recess. The mating recess includes a clearance section and a limiting section distributed along a second direction. The limiting protrusion engages with the mating recess and is adjustable in position in the second direction. It has a free position in the clearance section and a limited position in the limiting section. In the free position, the limiting protrusion can disengage from the mating recess along the first direction. In the limited position, the limiting protrusion is restricted from disengaging from the mating recess along the first direction.

[0007] A limiting member is disposed on the structural member, the limiting member abuts against the functional member, and the limiting member is used to restrict the movement of the limiting protrusion from the limiting position to the free position;

[0008] The first direction and the second direction are intersecting.

[0009] In the technical solution provided in this application, one of the functional component and the structural component is provided with a limiting protrusion, and the other is provided with a mating recess. By adjusting the position of the limiting protrusion between the clearance section and the limiting section of the mating recess, the connection and disengagement of the limiting protrusion and the mating recess can be realized, that is, the installation and disassembly of the functional component on the structural component can be realized. This connection method is relatively simple in structure and convenient in operation. Moreover, by setting the limiting component to abut against the functional component, it can also play a further limiting role for the functional component. Under long-term vibration conditions, the limiting protrusion can also be stably maintained in the limiting position, and it is not easy to move to the free position and become loose or even disengaged, which is conducive to improving the reliability of the battery device.

[0010] In some embodiments, the limiting member abuts against the functional member at least in the first direction and / or the second direction.

[0011] In the above technical solution, since the position of the limiting protrusion relative to the mating recess in the second direction is adjustable, the limiting member abuts against the functional member in the second direction, and a blocking force in the second direction can be applied to the functional member, directly preventing the limiting protrusion from moving toward the free position; since the functional member is located on one side of the structural member in the first direction, the limiting member abuts against the functional member in the first direction, and a normal pressure in the direction toward the structural member can be applied to the functional member, thereby increasing the maximum static friction between the functional member and the structural member, and indirectly increasing the difficulty for the limiting protrusion to disengage from the limiting position along the second direction.

[0012] In some embodiments, the limiting member includes a main body and a limiting part connected to each other, the main body is disposed on the structural member, and the limiting part is elastically disposed and abuts against the functional member.

[0013] In the above technical solution, the limiting member abuts against the functional member through the limiting part that is elastically set. Since the limiting part can generate elastic deformation to a certain extent, it is beneficial to compensate for the dimensional errors that may exist in the functional member itself, and it can also cope with the limiting installation of functional members of various sizes and specifications, so as to ensure that the limiting part can apply sufficient abutting force to the functional member.

[0014] In some embodiments, the limiting part includes an elastic cantilever, the fixed end of which is connected to the main body and the free end of which abuts against the functional component.

[0015] In the above technical solution, compared with the limiting part made of conventional elastic rubber material, the elastic cantilever has highly directional elastic deformation, which is conducive to storing elastic potential energy and releasing elastic potential energy in a specific direction. It can provide a more stable abutting force for the functional component. Moreover, the elastic cantilever usually has a longer fatigue life when subjected to cyclic bending loads and is not easy to age.

[0016] In some embodiments, the main body is disposed on the side of the functional component in the second direction;

[0017] The free end of the elastic cantilever extends along the second direction.

[0018] In the above technical solution, by setting the main body on the side of the functional component in the second direction, that is, maintaining a certain distance from the functional component, the elastic cantilever is given space to extend in the second direction, so that the elastic cantilever can store enough elastic potential energy when it comes into contact with the functional component.

[0019] In some embodiments, the resilient cantilever includes a first cantilever, the free end of which extends to the side of the functional member opposite to the structural member and abuts against the functional member in the first direction.

[0020] In the above technical solution, by having the first cantilever abut against the functional component in the first direction, a positive pressure toward the structural component can be applied to the functional component, thereby increasing the maximum static friction between the functional component and the structural component, and indirectly increasing the difficulty for the limiting protrusion to disengage from the limiting position along the second direction; moreover, the positive pressure applied by the first cantilever is relatively stable and persistent, and can maintain the abutment action on the functional component for a long time.

[0021] In some embodiments, the elastic cantilever further includes a second cantilever, the free end of which abuts against the functional member in the second direction.

[0022] In the above technical solution, by having the second cantilever abut against the functional component in the second direction, a blocking force in the second direction can be applied to the functional component, directly preventing the limiting protrusion from moving toward the free position. Moreover, the blocking force applied by the second cantilever is relatively stable and long-lasting, and can maintain the abutment effect on the functional component for a long time.

[0023] In some embodiments, the free end of the second cantilever is also bent toward the first direction.

[0024] In the above technical solution, since the free end of the second cantilever abuts against the functional component in the second direction, and the free end of the second cantilever is also limited to bending in the first direction, it is beneficial to reduce the stress concentration at the fixed end of the second cantilever and extend the fatigue life of the second cantilever. On the other hand, it can also increase the effective cantilever length in a limited space to achieve a greater degree of deformation.

[0025] In some embodiments, the limiting protrusion includes an extension and a protrusion, the extension extending along the first direction, and the protrusion located at the end of the extension and protruding laterally toward the extension.

[0026] The protrusion is configured to pass through the clearance section, and the extension is configured to engage with the limiting section from the clearance section, such that the protrusion abuts against the peripheral area of ​​the limiting section in a first direction.

[0027] In the above technical solution, by setting the protrusion to protrude laterally toward the extension, after the extension is engaged with the limiting section of the mating recess, the protrusion and the peripheral solid part of the limiting section coincide in the projection in the first direction, thereby realizing the limiting connection between the functional component and the structural component in the first direction through the protrusion.

[0028] In some embodiments, the limiting member includes a main body and a limiting part connected to each other, the main body being detachably connected to the structural member, and the limiting part abutting against the functional member.

[0029] In the above technical solution, since the main body of the limiting component is detachably connected to the structural component, the limiting component can be removed from the structural component before the functional component is installed, thereby making way for the installation of the functional component. After the functional component is installed, the limiting component is then installed on the structural component, thereby making way for the functional component and reducing the difficulty of installing the functional component.

[0030] In some embodiments, one of the structural member and the main body has a plug-in portion extending along the first direction, and the other has a plug hole;

[0031] The plug portion is detachably inserted into the socket.

[0032] In the above technical solution, the detachable connection between the main body and the structural component is limited to the insertion of the plug-in part and the plug hole. After the limiting component and the structural component are aligned, the connection between the limiting component and the structural component can be completed simply by pressing the limiting component along the first direction. The installation of the limiting component and the structural component is easy and efficient.

[0033] In some embodiments, the plug portion includes a fastening plug portion, and the socket includes a first socket;

[0034] The fastening connector includes:

[0035] A rod portion, one end of which is connected to the main body portion, and the other end which is disposed through the first insertion hole along the first direction; and,

[0036] Multiple elastic protrusions are distributed on the rod portion in the first direction and extend laterally along the rod portion. The elastic protrusions are configured to elastically extend and retract laterally in the rod portion. When the fastening insertion portion is inserted into the first insertion hole, at least one of the elastic protrusions is disposed on the side of the first insertion hole away from the main body portion and abuts against the structural member in the first direction.

[0037] In the above technical solution, the rod of the fastening insertion part passes through the first insertion hole, and at least one of the multiple elastic protrusions formed on its side wall can pass out of the first insertion hole along with the rod, thereby elastically unfolding outside the first insertion hole to abut against the side of the structural member away from the main body. Under the abutting cooperation between the main body and the structural member, the function of quickly fastening the connection between the limiting member and the structural member can be achieved. Furthermore, the distribution of multiple elastic protrusions along the first direction can compensate for the thickness error of the structural member along the first direction to a certain extent.

[0038] In some embodiments, the plug portion includes a positioning plug portion, and the socket includes a second socket;

[0039] The positioning connector is inserted into the second socket.

[0040] In the above technical solution, the insertion between the plug and the socket also includes the positioning insertion between the positioning plug and the second socket. By setting the positioning plug or the second socket, the main body can be positioned on the structural component, thereby improving the accuracy of the installation position of the limiting component and ensuring that the limiting component provides a stable abutting force to the functional component.

[0041] In some embodiments, the limiting member is integrally injection molded.

[0042] In the above technical solution, the limiting component is processed by integral injection molding. During the limiting and abutting process, since there is no connecting interface inside the limiting component, the stress distribution it bears is relatively uniform, which means that the limiting component can withstand a large-scale alternating abutting force. Under long-term vibration conditions, the limiting component can play a stable and reliable limiting role for the functional component.

[0043] In some embodiments, the functional component includes a battery monitoring unit mounted on the structural component; and / or,

[0044] The structural component includes a structural beam, and the functional component is mounted on the structural beam.

[0045] In battery devices, multiple battery monitoring units are usually set up. The detachable connection method of limiting protrusions and mating recesses mentioned above can be used to install functional components, which can reduce the installation difficulty of battery monitoring units and improve installation efficiency. The structural beam has high structural strength and large length and width dimensions, which can provide sufficient and reliable installation points for functional components.

[0046] Secondly, this application also proposes an electrical device that includes the aforementioned battery device. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0048] Figure 1 A simplified structural diagram of an embodiment of an electrical device provided in this application, which is a vehicle;

[0049] Figure 2 An exploded structural diagram of an embodiment of the battery device provided in this application;

[0050] Figure 3 This is a schematic diagram of the assembly structure of structural components, functional components and limiting components in the battery device provided in this application;

[0051] Figure 4 for Figure 3 A magnified structural diagram of part A in the middle;

[0052] Figure 5 for Figure 3 Side view of the structural components, functional components and limiting components;

[0053] Figure 6 for Figure 5 Structural diagram of the intermediate functional component;

[0054] Figure 7 for Figure 3 Structural diagram of the middle structural component;

[0055] Figure 8 for Figure 7 A magnified structural diagram of part B in the middle;

[0056] Figure 9 for Figure 3 Schematic diagram of the middle limiting component;

[0057] Figure 10 for Figure 9 A side view of the middle limiting component;

[0058] Figure 11 for Figure 9 A schematic diagram of the structure of the middle limiting component from below.

[0059] Explanation of icon numbers:

[0060] 1000, vehicles;

[0061] 100. Battery assembly; 200. Controller; 300. Motor;

[0062] 1. Box body; 11. Box body; 12. Box cover; 2. Battery cell; 3. Structural component; 3a. Structural beam; 31. Mating recess; 311. Clearance section; 312. Limiting section; 32. Socket; 321. First socket; 322. Second socket; 4. Functional component; 4a. Battery monitoring unit; 41. Limiting protrusion; 411. Extension; 412. Protrusion; 5. Limiting component; 51. Main body; 52. Limiting part; 52a. Elastic cantilever; 521. First cantilever; 522. Second cantilever; 53. Socket; 531. Fastening socket; 5311. Rod; 5312. Elastic protrusion; 532. Positioning socket;

[0063] X, first direction; Y, second direction; Z, third direction.

[0064] The realization of the purpose, functional features and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0065] 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.

[0066] 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.

[0067] In the description of the embodiments of this application, technical terms such as "first" and "second" 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.

[0068] 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.

[0069] In the description of the embodiments of this application, 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).

[0070] In the description of the embodiments of this application, the technical terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and are not intended to 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, they should not be construed as limitations on the embodiments of this application.

[0071] In the description of the embodiments of this application, unless otherwise expressly specified and limited, 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. For those skilled in the art, the specific meaning of the above terms in the embodiments of this application can be understood according to the specific circumstances.

[0072] The battery device disclosed in this application can be used to provide electrical energy to electrical devices, which can be, but are not limited to, electric vehicles, electric cars, ships, spacecraft, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0073] For ease of explanation, the following embodiments will use a vehicle as an example of an electrical device according to an embodiment of this application.

[0074] Please refer to Figure 1 , Figure 1 This application provides a simplified structural diagram of an embodiment of a vehicle 1000 for the electrical equipment provided. 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 installed 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 controls 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.

[0075] 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.

[0076] In new energy vehicles, the battery monitoring unit (Cell Supervision Circuit) is a monitor that is electrically connected to the individual battery cells. It is responsible for collecting information from the individual battery cells and transmitting the collected information to the Battery Management System for processing. Currently, the battery monitoring unit in the battery device is prone to loosening under long-term vibration conditions, which has an adverse effect on the reliability of the battery device.

[0077] The reason why battery monitoring units are prone to loosening under long-term vibration conditions is that current battery monitoring units are mainly installed on structural beams. The structural beams have irregularly shaped holes that extend along a specific path. The battery monitoring unit is inserted into the opening section of the irregularly shaped hole through its own connector and slides along the extension path of the irregularly shaped hole to the limiting section of the irregularly shaped hole, thus completing the limiting connection between the battery monitoring unit and the structural beam. However, this connection relies entirely on the specific extension path of the irregularly shaped hole to limit the reverse movement of the connector of the battery monitoring unit. Under long-term non-directional vibration conditions, the connector of the battery monitoring unit still has a high probability of moving in the reverse direction to the limiting section of the irregularly shaped hole, which can lead to the battery monitoring unit becoming loose or even detaching from the structural beam.

[0078] In view of this, this application provides a battery device, which includes a structural component, a functional component, and a limiting component. The position of the functional component on the structural component is adjustable, and the limiting component can limit the final position of the functional component to ensure that the functional component is always in the limiting position. When the structural component is a structural beam and the functional component is a battery monitoring unit, it can at least improve the problem that the battery monitoring unit of the current battery device is prone to loosening under long-term vibration conditions.

[0079] For a better understanding of the battery device 100 provided in this application, please refer to [link to relevant documentation]. Figure 2 , Figure 2This is an exploded structural diagram of an embodiment of the battery device 100 provided in this application. The battery device 100 typically includes a housing 1 and battery cells 2. A mounting cavity is formed within the housing 1, through which the battery cells 2 are loaded. The basic structure of the housing 1 generally includes a main body 11 and a cover 12. The cover 12 is disposed on the main body 11 and, together with the main body 11, defines the mounting cavity. Generally, the battery cells 2 are disposed on the main body 11. After the battery device 100 is mounted on the vehicle 1000, the cover 12 is generally close to the vehicle 1000, and the main body 11 is generally away from the vehicle 1000. The mounting cavity can be primarily formed in the main body 11, in which case the main body 11 can be understood as a basin-shaped structure, and the cover 12 covers the main body 11 to cover the mounting cavity. Alternatively, the mounting cavity can be primarily formed in the cover 12, in which case the cover 12 can be understood as a dome-shaped structure, and the cover 12 covers the main body 11 to enclose the battery cells 2 mounted on the main body 11. Of course, the structure of the housing 1 is not limited to these.

[0080] The number of battery cells 2 in the housing 1 can be one or more. When multiple battery cells 2 are used, they can be connected in series, parallel, or a combination thereof. A combination thereof means that multiple battery cells 2 are connected in both series and parallel. These multiple battery cells 2 can be directly connected in series, parallel, or a combination thereof to form a battery assembly. Alternatively, multiple battery cells 2 can first be connected in series, parallel, or a combination thereof to form a battery module, and then multiple battery modules can be connected in series, parallel, or a combination thereof to form a battery assembly. The battery device 100 may also include other structures, such as a busbar, for realizing the electrical connection between multiple battery cells 2 or multiple battery modules. Each battery cell 2 can be a secondary battery or a primary battery, and 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 2 can be cylindrical, flat, cuboid, or other shapes.

[0081] Of course, other embodiments of the battery device 100 provided in this application may not include the housing 1, but may be presented in the form of the battery module described above.

[0082] In this application, the battery cell 2 may 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, or a magnesium-ion battery cell, etc., and this application embodiment is not limited to this. The battery cell 2 may be cylindrical, flat, cuboid, or other shapes, etc., and this application embodiment is not limited to this. The battery cell 2 is generally divided into three types according to the packaging method: cylindrical battery cell, square battery cell, and pouch battery cell, and this application embodiment is not limited to this.

[0083] The structure of a single battery cell 2 typically includes a casing, an end cap, an electrode assembly, and electrode terminals. The end cap covers the opening of the casing and, together with the casing, defines a receiving cavity. The electrode assembly is disposed within this receiving cavity, and the electrode terminals penetrate the end cap and are electrically connected to the tabs of the electrode assembly via an adapter. The electrode assembly is the component in the single battery cell 2 where the electrochemical reaction occurs. It 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, while the portions without active material each constitute a tab. The positive and negative tabs can be located together at one end of the main body or separately at both ends. During the charging and discharging process of the battery, the positive and negative active materials react with the electrolyte filled inside the casing.

[0084] To further understand the specific structure of the battery device provided in this application, the following explanation is provided in conjunction with the accompanying drawings, wherein... Figure 3 This is a schematic diagram of the assembly structure of structural components, functional components and limiting components in the battery device provided in this application; Figure 4 for Figure 3 A magnified structural diagram of part A in the middle; Figure 5 for Figure 3 Side view of the structural components, functional components and limiting components; Figure 6 for Figure 5 Structural diagram of the intermediate functional component; Figure 7 for Figure 3 Structural diagram of the middle structural component; Figure 8 for Figure 7 A magnified structural diagram of part B in the middle; Figure 9 for Figure 3 Schematic diagram of the middle limiting component; Figure 10 for Figure 9 A side view of the middle limiting component; Figure 11 for Figure 9 A schematic diagram of the structure of the middle limiting component from below.

[0085] Please see Figure 4 , Figure 6 and Figure 8In one embodiment of this application, the battery device 100 includes a structural member 3, a functional member 4, and a limiting member 5. The functional member 4 is disposed on one side of the structural member 3 in the first direction X. One of the functional member 4 and the structural member 3 is provided with a limiting protrusion 41, and the other is provided with a mating recess 31. The mating recess 31 includes a clearance section 311 and a limiting section 312 distributed along the second direction Y. The limiting protrusion 41 and the mating recess 31 are mated and the position of the limiting protrusion 41 in the second direction Y is adjustable. The limiting protrusion 41 has a free position in the clearance section 311 and a limited position in the limiting section 312. The limiting member 5 is disposed on the structural member 3 and abuts against the functional member 4. The limiting member 5 is used to restrict the movement of the functional member 4 from the limited position to the free position. The first direction X and the second direction Y are intersecting.

[0086] In the battery device 100, "structural component 3" refers to a component that can provide an installation foundation and has a certain load-bearing capacity. There are many types of structural component 3, such as expansion beams, side beams, mounting beams, wire harness mounting brackets, etc. "Functional component 4" refers to a component that plays a corresponding function during the normal charging and discharging process of the battery device 100. There are many types of functional component 4, such as battery monitoring unit 4a, battery management unit, etc. This embodiment does not limit this.

[0087] It should be noted that the first direction X and the second direction Y mentioned in this embodiment, as well as the third direction Z mentioned below, are three directions that intersect each other. In principle, the included angle between each pair can be any value between 0° and 180° (excluding 0° and 180°). However, under normal circumstances, the first direction X, the second direction Y and the third direction Z are perpendicular to each other.

[0088] The phrase "one of the functional component 4 and the structural component 3 is provided with a limiting protrusion 41, and the other is provided with a mating recess 31" includes two schemes: "the functional component 4 is provided with a limiting protrusion 41, and the structural component 3 is provided with a mating recess 31" and "the functional component 4 is provided with a mating recess 31, and the structural component 3 is provided with a limiting protrusion 41". The function of the mating recess 31 is to allow the limiting protrusion 41 to fit into it. Since the mating recess 31 has a clearance section 311 and a limiting section 312 distributed along the second direction Y, the limiting protrusion 41 can move along the second direction Y to a free position in the clearance section 311. That is, in the free position, the limiting protrusion 41 can freely detach from the mating recess 31, or freely be installed into the mating recess 31 from the outside. The direction of installation and disengagement refers to the orientation of the opening of the mating recess 31, which is usually the first direction X. The limiting protrusion 41 can move along the second direction Y to the limiting position of the limiting segment 312. That is, the limiting protrusion 41 is difficult to disengage from the mating recess 31 along the first direction X at the limiting position, thereby obtaining at least the limiting position in the first direction X. The "matting recess 31" can specifically be a mating groove, which has an open groove segment (corresponding to the avoidance segment 311) and a closed groove segment (corresponding to the limiting segment 312) in the first direction X. The "limiting protrusion 41" can specifically be a limiting claw, which extends from the open groove segment and then engages with the closed groove segment along the second direction Y, thereby abutting against the closed entity of the closed groove segment in the first direction X.

[0089] The "limiting member 5" is provided on the structural member 3. Its function is to limit the position of the limiting member 5. There are many corresponding structural types, and this embodiment does not limit them.

[0090] In the technical solution provided in this application, one of the functional component 4 and the structural component 3 is provided with a limiting protrusion 41, and the other is provided with a mating recess 31. By adjusting the position of the limiting protrusion 41 between the clearance section 311 and the limiting section 312 of the mating recess 31, the connection and disengagement of the limiting protrusion 41 and the mating recess 31 can be realized, that is, the installation and disassembly of the functional component 4 on the structural component 3 can be realized. This connection method is relatively simple in structure and convenient in operation. Moreover, by setting the limiting component 5 to abut against the functional component 4, the functional component 4 can also play a further limiting role. Under long-term vibration conditions, the limiting protrusion 41 can also be stably maintained in the limiting position, and it is not easy to move to the free position and become loose or even disengaged, which is conducive to improving the reliability of the battery device 100.

[0091] Please see Figure 4 , Figure 9 and Figure 10 In some embodiments, the limiting member 5 abuts against the functional member 4 at least in the first direction X and / or the second direction Y.

[0092] "The limiting member 5 abuts against the functional member 4 at least in the first direction X and / or the second direction Y" includes "the limiting member 5 abuts against the functional member 4 at least in the first direction X", "the limiting member 5 abuts against the functional member 4 at least in the second direction Y", and "the limiting member 5 abuts against the functional member 4 at least in the first direction X and the second direction Y". Of course, the limiting member 5 may also abut against the functional member 4 in a third direction Z. The way in which the limiting member 5 abuts against the functional member 4 can be achieved by elastic deformation or by interference fit, which is not limited in this embodiment.

[0093] In the above technical solution, since the position of the limiting protrusion 41 relative to the mating recess 31 in the second direction Y is adjustable, the limiting member 5 abuts against the functional member 4 in the second direction Y, and can apply a blocking force towards the functional member 4 in the second direction Y, directly preventing the limiting protrusion 41 from moving towards the free position; since the functional member 4 is located on one side of the structural member 3 in the first direction X, the limiting member 5 abuts against the functional member 4 in the first direction X, and can apply a positive pressure towards the structural member 3 to the functional member 4, thereby increasing the maximum static friction between the functional member 4 and the structural member 3, and indirectly increasing the difficulty for the limiting protrusion 41 to disengage from the limiting position along the second direction Y.

[0094] Please see Figures 9 to 11 In some embodiments, the limiting member 5 includes a main body 51 and a limiting member 52 connected to each other. The main body 51 is disposed on the structural member 3, and the limiting member 52 is elastically disposed and abuts against the functional member 4.

[0095] "The interconnected main body 51 and the limiting part 52" can be understood as the main body 51 and the limiting part 52 being integrally connected. Specifically, this can be a welding connection or an adhesive connection. It can also be understood as the main body 51 and the limiting part 52 being directly processed from the same raw material. This embodiment does not limit this. "The limiting part 52 is elastically configured." The elastic characteristics of the limiting part 52 can be reflected in the material. For example, the limiting part 52 can be made of rubber. The elastic characteristics of the limiting part 52 can also be reflected in the structure, such as a cantilever structure or a spring structure. This embodiment does not limit the material or structure of the limiting part 52.

[0096] In the above technical solution, the limiting member 5 abuts against the functional member 4 through the limiting part 52 which is elastically set. Since the limiting part 52 can generate elastic deformation to a certain extent, it is beneficial to compensate for the dimensional error that may exist in the functional member 4 itself. On the other hand, it can also cope with the limiting installation of functional members 4 of various sizes and specifications, so as to ensure that the limiting part 52 can apply sufficient abutting force to the functional member 4.

[0097] Please see Figure 10In some embodiments, the limiting part 52 includes an elastic cantilever 52a, the fixed end of which is connected to the main body part 51, and the free end of which abuts against the functional member 4.

[0098] "Elastic cantilever 52a" refers to a cantilever structure with elastic properties. This cantilever structure typically has a fixed end for fixed connection and a free end for elastic contact. Elastic cantilever 52a is usually made of plastic, but the possibility of it being made of metal is not excluded.

[0099] In the above technical solution, compared with the limiting part 52 made of conventional elastic rubber material, the elastic cantilever 52a has highly directional elastic deformation, which is conducive to storing elastic potential energy and releasing elastic potential energy in a specific direction. It can provide a more stable abutting force for the functional component 4. Moreover, the elastic cantilever 52a usually has a long fatigue life when subjected to cyclic bending loads and is not easy to age.

[0100] Please see Figure 4 In some embodiments, the main body 51 is disposed on the side of the functional member 4 in the second direction Y; the free end of the elastic cantilever 52a extends along the second direction Y.

[0101] It should be noted that "the main body 51 is located on the side of the functional component 4 in the second direction Y" means that the main body 51 maintains a certain distance from the functional component 4 in the second direction Y. This embodiment only limits "the free end of the elastic cantilever 52a extends along the second direction Y", but does not limit the specific direction in which the free end of the elastic cantilever 52a abuts against the functional component 4. The free end of the elastic cantilever 52a can abut against the functional component 4 directly from the second direction Y, or it can abut against the functional component 4 from the first direction X or the third direction Z.

[0102] In the above technical solution, by means of the extension of the elastic cantilever 52a along the second direction Y, the main body 51 can be set on the side of the functional component 4 in the second direction Y, that is, it maintains a certain distance from the functional component 4, thereby giving the elastic cantilever 52a space to store elastic potential energy.

[0103] In the above technical solution, by setting the main body 51 on the side of the functional member 4 in the second direction Y, that is, maintaining a certain distance from the functional member 4, the elastic cantilever 52a is given space to extend in the second direction Y, so that the elastic cantilever 52a can store enough elastic potential energy when it comes into contact with the functional member 4.

[0104] Please see Figure 10 In some embodiments, the elastic cantilever 52a includes a first cantilever 521, the free end of which extends to the side of the functional member 4 away from the structural member 3 and abuts against the functional member 4 in a first direction X.

[0105] In the above technical solution, by having the first cantilever 521 abut against the functional component 4 in the first direction X, a positive pressure toward the structural component 3 can be applied to the functional component 4, thereby increasing the maximum static friction between the functional component 4 and the structural component 3, and indirectly increasing the difficulty for the limiting protrusion 41 to disengage from the limiting position along the second direction Y; moreover, the positive pressure applied by the first cantilever 521 is relatively stable and persistent, and can maintain the abutment action on the functional component 4 for a long time.

[0106] Combining the scheme of the free end of the elastic cantilever 52a extending along the second direction Y, "the free end of the first cantilever 521 extending to the side of the functional component 4 away from the structural component 3" can be that the free end of the first cantilever 521 extends straight towards the second direction Y, or the free end of the first cantilever 521 extends towards the second direction Y while also being inclined towards the first direction X. Specifically, it can be extended towards the structural component 3 or extended away from the structural component 3.

[0107] Please see Figure 10 In some embodiments, the elastic cantilever 52a further includes a second cantilever 522, the free end of which abuts against the functional member 4 in the second direction Y.

[0108] In the above technical solution, the second cantilever 522 abuts against the functional component 4 in the second direction Y, which can apply a blocking force to the functional component 4 in the second direction Y, directly preventing the limiting protrusion 41 from moving toward the free position. Moreover, the blocking force applied by the second cantilever 522 is relatively stable and long-lasting, and can maintain the abutment effect on the functional component 4 for a long time.

[0109] Please see Figure 10 In some embodiments, the free end of the second cantilever 522 is also bent toward the first direction X.

[0110] It should be noted that the free end of the second cantilever 522 also bends toward the first direction X, specifically it can bend toward the side closer to the structural member 3 or toward the side away from the structural member 3.

[0111] In the above technical solution, since the free end of the second cantilever 522 abuts against the functional component 4 in the second direction Y, and the free end of the second cantilever 522 is also limited to bending in the first direction X, it is beneficial to reduce the stress concentration at the fixed end of the second cantilever 522 and extend the fatigue life of the second cantilever 522. On the other hand, it can also increase the effective cantilever length in a limited space to achieve a greater degree of deformation.

[0112] Please see Figure 6In some embodiments, the limiting protrusion 41 includes an extension 411 and a protrusion 412. The extension 411 extends along a first direction X, and the protrusion 412 is located at the end of the extension 411 and protrudes laterally toward the extension 411. The protrusion 412 is configured to pass through the clearance section 311, and the extension 411 is configured to engage with the limiting section 312 from the clearance section 311, such that the protrusion 412 abuts against the peripheral area of ​​the limiting section 312 in the first direction X.

[0113] Regarding the "lateral direction of the extension 411", the extension 411 extends along the first direction X. The lateral direction refers to any direction that intersects with the first direction X. Specifically, it can be the second direction Y or the third direction Z that is perpendicular to the first direction X. The protrusion 412 can be a protrusion protruding towards the third direction Z, or it can be an annular protrusion extending around the extension 411. This embodiment does not limit this.

[0114] Combining the statements that "the protrusion 412 can pass through the clearance section 311" and "the extension 411 can engage with the limiting section 312 from the clearance section 311", it can be understood that the mating recess 31 is specifically provided through the first direction X, so that the protrusion 412 of the limiting protrusion 41 can pass through the clearance section 311 of the mating recess 31 along the first direction X and reach the other side of the mating recess 31. At this time, the extension 411 of the limiting protrusion 41 is still inside the clearance section 311 of the mating recess 31. Then, by pushing the limiting protrusion 41 toward the limiting section 312, the extension 411 can be engaged with the limiting section 312 of the mating recess 31, and the protrusion 412 abuts against the peripheral area of ​​the limiting section 312 in the first direction X. The peripheral area of ​​the limiting section 312 can also be understood as the surrounding solid part of the structural member 3 or the functional member 4 that surrounds the limiting section 312.

[0115] In the above technical solution, the protrusion 412 is laterally protruding toward the extension 411, so that after the extension 411 is engaged with the limiting section 312 by the avoidance section 311 of the mating recess 31, the protrusion 412 and the peripheral solid part of the limiting section 312 coincide in the projection of the first direction X, thereby realizing the limiting connection between the functional component 4 and the structural component 3 in the first direction X through the protrusion 412.

[0116] Specifically, please refer to Figure 6 and Figure 8 In one embodiment, the limiting protrusion 41 is disposed on the functional component 4, and the cooperating recess 31 is disposed on the structural component 3.

[0117] In some embodiments, the limiting member 5 includes a main body portion 51 and a limiting portion 52 connected to each other. The main body portion 51 is detachably connected to the structural member 3, and the limiting portion 52 abuts against the functional member 4.

[0118] It should be noted that there are many ways in which the main body 51 can be detachably connected to the structural member 3, such as by means of a snap fastener or by means of bolts. This embodiment does not limit this.

[0119] In the above technical solution, since the main body 51 of the limiting member 5 is detachably connected to the structural member 3, the limiting member 5 can be removed from the structural member 3 before the functional member 4 is installed, thereby making way for the installation of the functional member 4. After the functional member 4 is installed, the limiting member 5 is then installed on the structural member 3, thereby making way for the functional member 4 and reducing the difficulty of installing the functional member 4.

[0120] Please see Figure 5 , Figure 8 and Figure 11 In some embodiments, one of the structural member 3 and the main body 51 is formed with a plug portion 53 extending along a first direction X, and the other is formed with a socket 32; wherein the plug portion 53 is detachably inserted into the socket 32.

[0121] It should be noted that this embodiment includes two technical solutions: "the structural member 3 has a plug-in portion 53 and the main body 51 has a plug hole 32" and "the main body 51 has a plug-in portion 53 and the structural member 3 has a plug hole 32". Since the plug-in portion 53 extends along the first direction X, the corresponding plug hole 32 should also extend along the first direction X. It can be understood that the main body 51 should be located on the side of the structural member 3 along the first direction X, specifically on the same side as the functional member 4. The plug-in engagement of the plug-in portion 53 and the plug hole 32 provides a connection between the main body 51 and the structural member 3 along the first direction X. For example, the plug-in portion 53 and the plug hole 32 can be connected by an interference fit, as long as the plug-in portion 53 can be inserted into the plug hole 32 along the first direction X. This embodiment does not limit this.

[0122] In the above technical solution, the detachable connection between the main body 51 and the structural component 3 is limited to the insertion of the plug-in part 53 and the plug hole 32. After the limiting member 5 and the structural component 3 are aligned, the connection between the limiting member 5 and the structural component 3 can be completed simply by pressing the limiting member 5 along the first direction X. The installation of the limiting member 5 and the structural component 3 is easy and efficient.

[0123] Please see Figure 8 and Figure 10In some embodiments, the insertion portion 53 includes a fastening insertion portion 531, and the insertion hole 32 includes a first insertion hole 321. The fastening insertion portion 531 includes a rod portion 5311 and a plurality of elastic protrusions 5312. One end of the rod portion 5311 is connected to the main body portion 51, and the other end is disposed through the first insertion hole 321 along the first direction X. The plurality of elastic protrusions 5312 are distributed on the rod portion 5311 in the first direction X and extend laterally along the rod portion 5311. The elastic protrusions 5312 are configured to be elastically expandable and contractable in the lateral direction of the rod portion 5311. When the fastening insertion portion 531 is inserted into the first insertion hole 321, at least one elastic protrusion 5312 is disposed on the side of the first insertion hole 321 away from the main body portion 51 and abuts against the structural member 3 along the first direction X.

[0124] The phrases "the plug-in portion 53 includes the fastening plug-in portion 531" and "the socket 32 ​​includes the first socket 321" can be understood as follows: the plug-in portion 53 is only composed of the fastening plug-in portion 531, and the socket 32 ​​is only composed of the first socket 321. Alternatively, the plug-in portion 53 may also include other plug-in structures besides the fastening plug-in portion 531, and the socket 32 ​​may also include other holes besides the first socket 321. For example, the plug-in portion 53 may also include a positioning plug-in portion 532 for positioning and plugging with the structural member 3, and the socket 32 ​​may also include a second socket 322 for cooperating with the positioning plug-in portion 532. This embodiment does not limit this aspect.

[0125] Regarding the "lateral orientation of the rod 5311", the rod 5311 extends along the first direction X, and its lateral orientation refers to any direction intersecting the first direction X, specifically it can be a second direction Y or a third direction Z perpendicular to the first direction X; the "elastic protrusion 5312" extends laterally along the rod 5311 and can elastically contract along this lateral direction, which allows the elastic protrusion 5312 to elastically contract under the pressure of the inner wall of the first insertion hole 321 as the rod 5311 extends into the first insertion hole 321. The other end of 11 can extend elastically after extending out of the first insertion hole 321; the purpose of arranging multiple elastic protrusions 5312 in the first direction X is that during the process of inserting the rod 5311 into the first insertion hole 321, there will always be an elastic protrusion 5312 that can pass through the first insertion hole 321 and elastically unfold on the outside of the first insertion hole 321 away from the main body 51, thereby abutting against the structural member 3; in order to cooperate with the abutment of the elastic protrusion 5312 against the structural member 3, the projected area of ​​the main body 51 in the first direction X should be at least greater than the cross-sectional area of ​​the rod 5311.

[0126] In the above technical solution, the rod portion 5311 of the fastening insertion portion 531 passes through the first insertion hole 321, and at least one of the multiple elastic protrusions 5312 formed on its side wall can pass out of the first insertion hole 321 along with the rod portion 5311, thereby elastically unfolding outside the first insertion hole 321 to abut against the side of the structural member 3 away from the main body portion 51. Under the abutting cooperation between the main body portion 51 and the structural member 3, the function of quickly fastening the connection between the limiting member 5 and the structural member 3 can be achieved. Furthermore, the distribution of multiple elastic protrusions along the first direction X can compensate for the thickness error of the structural member 3 along the first direction X to a certain extent.

[0127] Please see Figure 8 and Figure 11 In some embodiments, the plug portion 53 includes a positioning plug portion 532, and the plug hole 32 includes a second plug hole 322; wherein the positioning plug portion 532 is inserted into the second plug hole 322.

[0128] The phrases "the plug-in portion 53 includes the positioning plug-in portion 532" and "the socket 32 ​​includes the second socket 322" can be understood as follows: the plug-in portion 53 is only composed of the positioning plug-in portion 532, and the socket 32 ​​is only composed of the second socket 322. Alternatively, the plug-in portion 53 may also include other plug-in structures besides the positioning plug-in portion 532, and the socket 32 ​​may also include other holes besides the second socket 322. This embodiment does not limit these aspects.

[0129] In the above technical solution, the insertion between the insertion part 53 and the insertion hole 32 also includes the positioning insertion between the positioning insertion part 532 and the second insertion hole 322. By setting the positioning insertion part 532 or the second insertion hole 322, the main body part 51 can also be positioned on the structural member 3, thereby improving the accuracy of the installation position of the limiting member 5, and thus ensuring that the limiting part 52 provides a stable abutting force to the functional member 4.

[0130] In some embodiments, the limiting member 5 is integrally injection molded.

[0131] Specifically, after injection molding, the limiting member 5 can have the structural features mentioned in the above embodiments, such as the main body 51, the limiting part 52, and the insertion part 53.

[0132] In the above technical solution, the limiting component 5 is manufactured by integral injection molding. During the limiting and abutting process, since there is no connecting interface inside the limiting component 5, the stress distribution it bears is relatively uniform. This means that the limiting component 5 can withstand a large-scale alternating abutting force. Under long-term vibration conditions, the limiting component 5 can play a stable and reliable limiting role for the functional component 4. Moreover, the injection-molded limiting component 5 usually also has good insulation properties, which can match the insulation scenario when the functional component 4 is the battery monitoring unit 4a.

[0133] Specifically, the functional component 4 includes a battery monitoring unit 4a, which is mounted on the structural component 3.

[0134] In the battery device 100, multiple battery monitoring units 4a are usually provided. By using the detachable connection method of the limiting protrusion 41 and the mating recess 31 to install the functional component 4, the installation difficulty of the battery monitoring unit 4a can be reduced and the installation efficiency can be improved.

[0135] Specifically, structural component 3 includes structural beam 3a, and functional component 4 is installed on structural beam 3a.

[0136] In the battery device 100, the structural beam 3a has high structural strength and large length and width dimensions, which can provide sufficient and reliable mounting points for the functional components 4.

[0137] It should be noted that the two parallel technical features mentioned above, "functional component 4 includes battery monitoring unit 4a" and "structural component 3 includes structural beam 3a", can be set individually or simultaneously. In the technical solution where they are set simultaneously, functional component 4 includes battery monitoring unit 4a and structural component 3 includes structural beam 3a. Battery monitoring unit 4a is installed on structural beam 3a. Since the setting position of battery monitoring unit 4a needs to meet insulation and sealing requirements, structural beam 3a is usually set inside the housing 1. For example, structural beam 3a can be an expansion beam or a side beam, or it can be a transverse or longitudinal beam that divides the internal space of housing 1. Of course, structural beam 3a can also be used as a mounting beam that is locked to the vehicle chassis.

[0138] Specifically, structural beam 3a is a transverse beam that separates the battery compartment and the high-voltage compartment inside the housing 1. This transverse beam also serves as a mounting beam for the battery device.

[0139] Generally speaking, the functional component 4 not only has a certain size in the first direction X and the second direction Y, but also has a corresponding size in the third direction Z. In some embodiments, multiple limiting parts 52 are arranged in the third direction Z; wherein the first direction X, the second direction Y, and the third direction Z are arranged to intersect each other.

[0140] By arranging multiple limiting parts 52 in the third-party direction Z, the limiting parts 5 can provide limiting at multiple points of the functional component 4 in the third-party direction Z, thereby further improving the installation stability of the functional component 4.

[0141] This application also proposes an electrical device including a battery device 100. The specific structure of the battery device 100 is as described in the above embodiments. Since this electrical device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here. The battery device 100 is used to provide electrical energy to the electrical device, which includes, but is not limited to, new energy vehicles such as pure electric vehicles, hybrid electric vehicles, and range-extended electric vehicles, and may also include aircraft such as electric drones and electric passenger aircraft.

[0142] This application discloses a battery device 100, which includes a structural component 3, a functional component 4, and a limiting component 5. The structural component 3 is specifically a structural beam 3a, the functional component 4 is specifically a battery monitoring unit 4a, and the limiting component 5 is injection molded and has a main body 51, a limiting part 52, and a plug-in part 53. The battery monitoring unit 4a is disposed on one side of the structural beam 3a in a first direction X. The structural beam 3a has a mating recess 31 extending along the first direction X. The mating recess 31 has a clearance section 311 and a limiting section 312 distributed along a second direction Y. The battery monitoring unit 4a has a limiting protrusion 41, which includes an extension 411 and a protrusion 412. The extension 411 extends along the first direction X. The extension 411 extends in the first direction X, with a protrusion 412 located at the end of the extension 411 and protruding laterally toward the extension 411. The protrusion 412 is configured to pass through the clearance section 311 of the mating recess 31 along the first direction X, so that the limiting protrusion 41 is in a free position. The extension 411 is configured to engage with the limiting section 312 from the clearance section 311 along the second direction Y, so that the protrusion 412 abuts against the peripheral area of ​​the limiting section 312 in the first direction X, so that the limiting protrusion 41 is in a limited position. The structural beam 3a is provided with a first insertion hole 321 and a second insertion hole 322 that pass through along the first direction X. The main body 51 is provided on one side of the structural member 3 in the first direction X and is located along the functional member 4. On the side of the second direction Y, the insertion part 53 extends along the first direction X and is disposed on the main body part 51. The insertion part 53 includes a fastening insertion part 531 and a positioning insertion part 532. The fastening insertion part 531 includes a rod part 5311 and a plurality of elastic protrusions 5312. One end of the rod part 5311 is connected to the main body part 51, and the other end is disposed through the first insertion hole 321 along the first direction X. The plurality of elastic protrusions 5312 are distributed on the rod part 5311 in the first direction X and extend laterally along the rod part 5311. The elastic protrusions 5312 are configured to be elastically retractable in the lateral direction of the rod part 5311, and when the fastening insertion part 531 is inserted into the first insertion hole 321, at least one elastic protrusion 5312 is disposed on the first insertion hole 321. A socket 321 is located on the side opposite to the main body 51 and abuts against the structural member 3 along the first direction X. A positioning insertion part 532 is inserted into the second socket 322. The limiting part 52 is configured as an elastic cantilever 52a. The fixed end of the elastic cantilever 52a is connected to the main body 51, and the free end of the elastic cantilever 52a extends along the second direction Y. The elastic cantilever 52a includes a first cantilever 521. The free end of the first cantilever 521 extends to the side of the functional member 4 opposite to the structural member 3 and abuts against the functional member 4 in the first direction X. The elastic cantilever 52a also includes a second cantilever 522. The free end of the second cantilever 522 abuts against the functional member 4 in the second direction Y. The free end of the second cantilever 522 is also bent in the first direction X.

[0143] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Structural components; A functional component is disposed on one side of the structural component in a first direction. One of the functional component and the structural component has a limiting protrusion, and the other has a mating recess. The mating recess includes a clearance section and a limiting section distributed along a second direction. The limiting protrusion engages with the mating recess and is adjustable in position in the second direction. It has a free position in the clearance section and a limited position in the limiting section. In the free position, the limiting protrusion can disengage from the mating recess along the first direction. In the limited position, the limiting protrusion is restricted from disengaging from the mating recess along the first direction. A limiting member is disposed on the structural member, the limiting member abuts against the functional member, and the limiting member is used to restrict the movement of the limiting protrusion from the limiting position to the free position; The first direction and the second direction are intersecting.

2. The battery device as claimed in claim 1, characterized in that, The limiting member abuts against the functional member at least in the first direction and / or the second direction.

3. The battery device as claimed in claim 1, characterized in that, The limiting member includes a main body and a limiting part that are connected to each other. The main body is disposed on the structural member, and the limiting part is elastically disposed and abuts against the functional member.

4. The battery device as claimed in claim 3, characterized in that, The limiting part includes an elastic cantilever, the fixed end of which is connected to the main body, and the free end of which abuts against the functional component.

5. The battery device as claimed in claim 4, characterized in that, The main body is disposed on the side of the functional component in the second direction; The free end of the elastic cantilever extends along the second direction.

6. The battery device as claimed in claim 4, characterized in that, The elastic cantilever includes a first cantilever, the free end of which extends to the side of the functional member opposite to the structural member and abuts against the functional member in the first direction.

7. The battery device as claimed in claim 4, characterized in that, The elastic cantilever also includes a second cantilever, the free end of which abuts against the functional component in the second direction.

8. The battery device as claimed in claim 7, characterized in that, The free end of the second cantilever is also bent toward the first direction.

9. The battery device according to any one of claims 1 to 8, characterized in that, The limiting protrusion includes an extension and a protrusion. The extension extends along the first direction, and the protrusion is located at the end of the extension and protrudes laterally toward the extension. The protrusion is configured to pass through the clearance section, and the extension is configured to engage with the limiting section from the clearance section, such that the protrusion abuts against the peripheral area of ​​the limiting section in a first direction.

10. The battery device according to any one of claims 1 to 8, characterized in that, The limiting member includes a main body and a limiting part that are connected to each other. The main body is detachably connected to the structural member, and the limiting part abuts against the functional member.

11. The battery device as claimed in claim 10, characterized in that, One of the structural components and the main body has a plug-in portion extending along the first direction, and the other has a plug hole; The plug portion is detachably inserted into the socket.

12. The battery device as claimed in claim 11, characterized in that, The plug-in portion includes a fastening plug-in portion, and the plug hole includes a first plug hole; The fastening connector includes: A rod portion, one end of which is connected to the main body portion, and the other end which is disposed through the first insertion hole along the first direction; and, Multiple elastic protrusions are distributed on the rod portion in the first direction and extend laterally along the rod portion. The elastic protrusions are configured to elastically extend and retract laterally in the rod portion. When the fastening insertion portion is inserted into the first insertion hole, at least one of the elastic protrusions is disposed on the side of the first insertion hole away from the main body portion and abuts against the structural member in the first direction.

13. The battery device as claimed in claim 11, characterized in that, The plug-in portion includes a positioning plug-in portion, and the plug hole includes a second plug hole; The positioning connector is inserted into the second socket.

14. The battery device according to any one of claims 1 to 8, characterized in that, The limiting component is integrally injection molded.

15. The battery device according to any one of claims 1 to 8, characterized in that, The functional component includes a battery monitoring unit, which is mounted on the structural component; and / or, The structural component includes a structural beam, and the functional component is mounted on the structural beam.

16. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1 to 15.

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