Battery device, protection assembly and electric equipment

Abstract

The utility model discloses a battery device, a protection assembly and electric equipment, and relates to the technical field of battery devices. The battery device comprises a box body, a battery monomer and a protection assembly, and the battery monomer is arranged in the box body and is provided with an output pole assembly. The protection assembly comprises a base, a protection cover assembly and a fastener. The base is installed in the box body, and the output pole assembly is in lap joint with the base. The protective cover assembly is connected with the base and covers at least part of the output pole assembly, and the protective cover assembly is provided with a limiting cavity. At least one part of the fastener is limited in the limiting cavity, at least one part of the fastener is arranged outside the limiting cavity, and the output pole assembly is connected to the base through the fastener. According to the technical scheme, the risk that the fastener is easy to fall into the box body of the battery device when the fastener fastens the output pole assembly can be reduced.

Description

Technical Field

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

[0002] The battery assembly includes a housing and several battery modules housed within the housing. Each battery module typically includes a pair of end plates and multiple battery cells disposed between the end plates. On the battery cell closest to the end plate, at least one output electrode protrudes, extending to the location of the end plate and electrically connected to one end of another output electrode to form the output electrode of the battery module. These two output electrodes are typically fastened to a protective assembly outside the output electrode using bolts or other fasteners. However, in related technologies, when fastening the two output electrodes to the protective assembly, there is a risk that the bolts may fall into the housing. Utility Model Content

[0003] The main purpose of this application is to provide a battery device, protective component and electrical equipment, which aims to improve the problem that fasteners are prone to falling off when the two tabs of the output terminal are fastened.

[0004] To achieve the above objectives, the battery device proposed in this application includes a housing, a battery cell, and a protective assembly. The battery cell is disposed within the housing and includes an output electrode assembly. The protective assembly includes a base, a protective cover assembly, and fasteners. The base is installed within the housing, and the output electrode assembly is attached to the base. The protective cover assembly is connected to the base and covers at least a portion of the output electrode assembly; the protective cover assembly has a limiting cavity. At least a portion of the fastener is confined within the limiting cavity, and at least a portion is disposed outside the limiting cavity, connecting the output electrode assembly to the base.

[0005] The technical solution of this application provides excellent protection for the battery cells by placing them inside the battery pack housing. Each battery cell has an output electrode assembly, and the protective components include a base, a protective cover assembly, and fasteners. The output electrode assembly is attached to the base, providing stable support. By connecting the protective cover assembly to the base and covering at least part of the output electrode assembly, the output electrode assembly is protected by both the protective cover and the base.

[0006] By providing a limiting cavity on the protective cover assembly, a portion of the fastener is confined within the limiting cavity, while the other portion extends out of the limiting cavity, and the output electrode assembly is connected to the base. This not only effectively fixes the output electrode assembly to ensure its good conductivity, but also limits the fastener by the cavity wall. This reduces the risk of the fastener falling into the housing when connecting the fastener to the output electrode assembly.

[0007] In one embodiment of this application, the protective cover assembly includes a main cover body and an adapter seat. The main cover body is connected to the base. The adapter seat is detachably connected to the main cover body, and the adapter seat forms the limiting cavity. The limiting cavity has an installation opening on the side away from the base, and the main cover body is at least partially capable of covering or opening the installation opening.

[0008] This design facilitates the installation of fasteners into the limiting cavity via the mounting port, and also allows the main cover to close the mounting port after the fasteners are installed in the limiting cavity, thereby improving the limiting effect on the fasteners. This ensures that the fasteners will not come out of the limiting cavity no matter how the user handles them, thus reducing the risk of the fasteners falling into the battery compartment.

[0009] In one embodiment of this application, the main cover is snapped into the adapter.

[0010] This design allows the main cover and the adapter to be detachably connected, so that the mounting port of the upper limit cavity of the adapter can be exposed when both are detached, so that fasteners can be installed into the limit cavity from the mounting port. On the other hand, it also facilitates quick assembly and disassembly of the main cover and the adapter, improving the efficiency of assembly and disassembly of the main cover and the adapter.

[0011] In one embodiment of this application, one of the main cover and the adapter is provided with a snap hole, and the other is provided with a snap fastener, which snaps into the snap hole.

[0012] This setup provides a more stable connection.

[0013] In one embodiment of this application, the main cover includes a fixed part and a movable cover. The fixed part is connected to the base and has a communication port that communicates with the mounting port. The adapter is connected to the fixed part. The movable cover is movably installed at the communication port to open or close the mounting port.

[0014] This design facilitates the placement and removal of fasteners when the movable cover opens the mounting port, and reduces the risk of fasteners falling out of the mounting port of the limiting cavity when the movable cover closes the mounting port.

[0015] In one embodiment of this application, the fastener is a screw connector that passes through the output electrode assembly and is threadedly connected to the base.

[0016] This configuration ensures that the output electrode assembly and the base are pressed together, thereby further ensuring that the two output electrode plates in the output electrode assembly can achieve an effective electrical connection.

[0017] In one embodiment of this application, the limiting cavity has a through hole on the side near the base; the fastener includes a first limiting part, a second limiting part, and a fastening part. The first limiting part is located within the limiting cavity. The second limiting part is connected to the first limiting part and passes through the through hole, and abuts against the output electrode assembly. The fastening part is connected to the side of the second limiting part away from the first limiting part, passes through the output electrode assembly, and is fastened to the base.

[0018] This design reduces the risk of fasteners coming completely out of the through hole and ensures that the two output electrode plates in the output electrode assembly fit together tightly.

[0019] In one embodiment of this application, the main cover has a clearance opening, which communicates with the mounting port and is coaxially arranged with the fastener; along the axial direction of the fastener, the projected area of ​​the fastener on the main cover is larger than the opening area of ​​the clearance opening.

[0020] This design reduces the risk of fasteners coming loose from the clearance opening.

[0021] In one embodiment of this application, the distance from the side of the limiting cavity near the base to the side of the limiting cavity away from the base is defined as H1, the dimension from the side of the output electrode assembly near the base to the side of the output electrode assembly away from the base is defined as H2, and the dimension of the fastener in the length extension direction is defined as H3; wherein, H1+H2≥H3.

[0022] This design avoids the risk of the fastener hitting the main cover and interfering with it after the fastener is disconnected from the base.

[0023] In one embodiment of this application, the base is snapped into the protective cover assembly.

[0024] This design improves the connection efficiency between the base and the protective cover assembly and ensures the stability of the connection between them.

[0025] This application also proposes a protective assembly comprising a base, a protective cover assembly, and fasteners. The base is configured to allow an output electrode assembly of a battery device to be attached. The protective cover assembly is connected to the base and covers at least a portion of the output electrode assembly; the protective cover assembly has a limiting cavity. A portion of the fastener is confined within the limiting cavity, and another portion extends out of the limiting cavity, connecting the output electrode assembly to the base.

[0026] The protective components in this application include a base, a protective cover assembly, and fasteners. The base is used for the output electrode assembly of the battery device to connect, thus providing stable support for the output electrode assembly. By connecting the protective cover assembly to the base and covering at least part of the output electrode assembly, the output electrode assembly can be protected by both the protective cover and the base. By providing a limiting cavity on the protective cover assembly, at least a portion of the fastener is confined within the limiting cavity, and at least a portion is disposed outside the limiting cavity. By connecting the output electrode assembly to the base, the output electrode assembly is effectively fixed to ensure good conductivity. Furthermore, the cavity wall of the limiting cavity can limit the fastener, thereby reducing the risk of the fastener falling into the housing when connecting the output electrode assembly.

[0027] This application also proposes an electrical device including the aforementioned battery device. Attached Figure Description

[0028] 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.

[0029] Figure 1 This is a schematic diagram of the vehicle structure according to some embodiments of this application;

[0030] Figure 2 This is an exploded view of the battery device according to some embodiments of this application;

[0031] Figure 3 This is an exploded structural diagram of a battery cell according to some embodiments of this application;

[0032] Figure 4 This is an assembly cross-sectional view of the protection components and output electrode components of some embodiments of this application;

[0033] Figure 5 This is a cross-sectional view of the protective cover assembly and fasteners assembled in some embodiments of the present application;

[0034] Figure 6 This is a perspective view of the protective cover assembly and fasteners assembled in the protective components of some embodiments of this application.

[0035] Figure 7 This is a three-dimensional structural diagram of the protective assembly of some embodiments of this application after the adapter and fastener are assembled.

[0036] Figure 8This is a schematic diagram of the structure of one embodiment of the main cover in the protective assembly of some embodiments of this application;

[0037] Figure 9 This is a schematic diagram of the structure of another embodiment of the main cover in the protective assembly of some embodiments of this application;

[0038] Figure 10 This is a schematic diagram of the structure of an embodiment of the adapter in the protective assembly of some embodiments of this application;

[0039] Figure 11 This is a schematic diagram of the structure of a fastener in a protective component according to some embodiments of this application.

[0040] Explanation of icon numbers:

[0041] 1000, vehicles;

[0042] 100. Battery assembly; 200. Controller; 300. Motor;

[0043] 10. Box body; 11. First part; 12. Second part;

[0044] 20. Battery cell; 21. End cap; 21a. Electrode terminal; 22. Housing; 23. Electrode assembly; 23a. Tab; 24. Output electrode assembly; 241. Output electrode bar;

[0045] 30. Protective component; 31. Base; 32. Protective cover assembly; 321. Main cover body; 3211. Fixing part; 3212. Movable cover; 321a. Buckle hole; 321b. Locking hole; 321c. Clearance opening; 321d. Connecting opening; 322. Adapter; 322a. Limiting cavity; 322b. Mounting opening; 322c. Buckle; 322d. Through hole; 33. Fastener; 33a. First limiting part; 33b. Second limiting part; 33c. Fastening part.

[0046] 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

[0047] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0048] It should be noted that if the embodiments of this application involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0049] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution that simultaneously satisfies A and B. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0050] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0051] This application provides an electrical device that uses a battery as a power source. The electrical device can be, but is not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0052] For ease of explanation, the following embodiments will be described using a vehicle 1000 as an example of an electrical device according to an embodiment of this application.

[0053] Please refer to Figure 1 , Figure 1This is a schematic diagram of the structure of a vehicle 1000 provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is provided inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery device 100 to supply power to the motor 300, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0054] 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.

[0055] Please refer to Figure 2 , Figure 2 This is an exploded view of a battery device 100 provided in some embodiments of this application. The battery device 100 includes a housing 10, a battery cell 20, and a protective assembly, both of which are housed within the housing 10. The housing 10 provides a space for accommodating the battery cell 20 and the protective assembly, and can employ various structures. In some embodiments, the housing 10 may include a first portion 11 and a second portion 12, which overlap each other, collectively defining a space for accommodating the battery cell 20 and a control module. The second portion 12 may be a hollow structure with one open end, and the first portion 11 may be a plate-like structure, covering the open side of the second portion 12 so that the first portion 11 and the second portion 12 collectively define the accommodating space; alternatively, both the first portion 11 and the second portion 12 may be hollow structures with one open side, with the open side of the first portion 11 overlapping the open side of the second portion 12. Of course, the box 10 formed by the first part 11 and the second part 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0056] Each battery cell 20 can be a secondary battery or a primary battery; it can also be a lithium-sulfur battery, a sodium-ion battery, or a magnesium-ion battery, but is not limited to these. The battery cell 20 can be cylindrical, flat, cuboid, or other shapes.

[0057] Please refer to Figure 3 , Figure 3 This is an exploded structural diagram of a battery cell 20 provided in some embodiments of this application. The battery cell 20 refers to the smallest unit that makes up a battery device. For example... Figure 3 The battery cell 20 includes an end cap 21, a housing 22, an electrode assembly 23, and other functional components.

[0058] End cap 21 refers to a component that covers the opening of housing 22 to isolate the internal environment of battery cell 20 from the external environment. The shape of end cap 21 can be adapted to the shape of housing 22 to fit it. Optionally, end cap 21 can be made of a material with certain hardness and strength (such as aluminum alloy), so that end cap 21 is not easily deformed under pressure and impact, giving battery cell 20 higher structural strength and improved safety performance. Functional components such as electrode terminals 21a can be provided on end cap 21. Electrode terminals 21a can be used for electrical connection with electrode assembly 23 to output or input electrical energy to battery cell 20. In some embodiments, end cap 21 can also be provided with a pressure relief mechanism for releasing internal pressure when the internal pressure or temperature of battery cell 20 reaches a threshold. The material of end cap 21 can also be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc., and this application embodiment does not impose any special limitations on this. In some embodiments, an insulating element may be provided on the inner side of the end cap 21. The insulating element can be used to isolate the electrical connection components within the housing 22 from the end cap 21 to reduce the risk of short circuits. For example, the insulating element may be made of plastic, rubber, etc.

[0059] The housing 22 is a component used to cooperate with the end cap 21 to form the internal environment of the battery cell 20. This internal environment can accommodate the electrode assembly 23, electrolyte, and other components. The housing 22 and the end cap 21 can be independent components. An opening can be provided on the housing 22, and the end cap 21 can be used to close the opening to form the internal environment of the battery cell 20. Alternatively, the end cap 21 and the housing 22 can be integrated. Specifically, the end cap 21 and the housing 22 can form a common connecting surface before other components are inserted into the housing. When it is necessary to encapsulate the interior of the housing 22, the end cap 21 closes the housing 22. The housing 22 can be of various shapes and sizes, such as cuboid, cylindrical, hexagonal prism, etc. Specifically, the shape of the housing 22 can be determined according to the specific shape and size of the electrode assembly 23. The material of the housing 22 can be various, such as copper, iron, aluminum, stainless steel, aluminum alloy, plastic, etc. This application embodiment does not impose any special limitations on this.

[0060] Electrode assembly 23 is the component in the battery cell 20 where the electrochemical reaction occurs. The casing 22 may contain one or more electrode assemblies 23. The electrode assembly 23 is mainly formed by winding or stacking positive and negative electrode sheets, and typically a separator is provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the main body of the electrode assembly 23, while the portions of the positive and negative electrode sheets without active material each constitute a tab 23a. The positive and negative tabs may be located together at one end of the main body or separately at both ends of the main body. During the charging and discharging process of the battery device 100, the positive and negative active materials react with the electrolyte, and the tabs 23a connect to the electrode terminals to form a current loop.

[0061] In the battery device 100, there can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed manner. A mixed connection means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed manner, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, the battery device 100 can also consist of multiple battery cells 20 first connected in series, parallel, or in a mixed manner to form battery modules, and then these battery modules are connected in series, parallel, or in a mixed manner to form a whole, which is also housed within the housing 10. The battery device 100 may also include other structures; for example, it may include a busbar component for electrical connection between the multiple battery cells 20.

[0062] A battery module typically includes a pair of end plates and multiple battery cells 20 disposed between the end plates. At least one output electrode protrudes from the battery cell 20 closest to the end plate. This output electrode can extend directly out of the housing 10 of the battery device 100 for electrical connection to external devices; or the output electrode can protrude to the location of the end plate and form an output electrode assembly of the battery module by electrically connecting one end of another output electrode, thereby achieving the effect of supplying current to external devices of the battery device 100. When the output electrode assembly includes two output electrodes, the two output electrodes are typically fastened to a protective assembly outside the output electrode assembly by bolts or other fasteners. The protective assembly typically includes a base and a protective cover. The base is connected to the end plates and serves to support the output electrode assembly. The output electrode assembly is fastened to the base by fasteners such as bolts and screws. The protective cover covers the connection point of the two output electrodes in the output electrode assembly to reduce the risk of electric shock. In related technologies, the two output terminals of the output terminal assembly are typically connected to the base first using fasteners, and then the protective cover is placed on top. However, when the two output terminals of the output terminal assembly are connected to the base first using fasteners, there is no limiting structure around the fasteners, which makes it easy for the fasteners to fall into the housing, potentially leading to abnormal noises or battery failure.

[0063] To address the issue of fasteners easily falling off when securing the two output electrode plates, please refer to the following reference. Figures 2 to 4 This application discloses a battery device 100, which includes a housing 10, a battery cell 20, and a protective assembly 30. The battery cell 20 is disposed within the housing 10 and has an output electrode assembly 24. The protective assembly 30 includes a base 31, a protective cover assembly 32, and fasteners 33. The base 31 is installed within the housing 10, and the output electrode assembly 24 is attached to the base 31. The protective cover assembly 32 is connected to the base 31 and covers at least a portion of the output electrode assembly 24. The protective cover assembly 32 has a limiting cavity 322a. At least a portion of the fastener 33 is confined within the limiting cavity 322a, and at least a portion is disposed outside the limiting cavity 322a, connecting the output electrode assembly 24 to the base 31.

[0064] The output electrode assembly 24 refers to the conductive component of the battery cell 20 used to output current. Specifically, it refers to the component that outputs the current of the battery cell 20 to the battery monitoring module, and then outputs it to the outside of the battery device through the battery monitoring module. The output electrode assembly 24 may include only one output electrode bar 241, or it may include two output electrode bars 241 connected in series. When the output electrode assembly 24 includes two output electrode bars 241 connected in series, the two output electrode bars 241 are stacked and pressed together by fasteners 33 to achieve the effect of the two output electrode bars 241 being connected in series.

[0065] The protective assembly 30 is a component that protects the connection between the two output electrodes 241. The protective assembly 30 includes a base 31, a protective cover assembly 32, and a fastener 33.

[0066] The base 31 is a supporting component used to support the output electrode assembly 24. The base 31 can be plate-shaped, block-shaped or other shapes. In order to achieve a better insulation effect, the base 31 can be a plastic part or a metal part coated with an insulating layer, etc.

[0067] The protective cover assembly 32 is a component that covers the connection point of the output electrode assembly 24 to reduce the risk of the user touching the output electrode assembly 24 and the fasteners 33 used to secure the output electrode assembly 24. The protective cover assembly 32 may consist of a single integrally molded or welded cover, or it may include two separate covers that are detachably connected. When the protective cover assembly 32 is connected to the base 31, it can be connected by screws, clips 322c, or other methods. The protective cover assembly 32 can be made of plastic or a metal part coated with an insulating layer.

[0068] The protective cover assembly 32 is provided with a limiting cavity 322a, which is a cavity used to limit the fastener 33. Specifically, the limiting cavity 322a can be a cylindrical cavity, a cuboid cavity, or other irregularly shaped cavities. For example, the cavity can be a cavity with an opening on the side facing away from the base 31. The cavity wall of this cavity can limit the fastener 33 circumferentially within the limiting cavity 322a, thereby reducing the risk of the fastener 33 falling off when the output electrode assembly 24 is pressed onto the base 31 by the fastener 33, and also making it easier for the fastener 33 to be installed into the limiting cavity 322a from the opening on the side of the cavity facing away from the base 31. Alternatively, the cavity can be a closed cavity, and the cavity wall can also limit the fastener 33 on the side away from the base 31, thereby further improving the stability of the fastener 33 on the protective cover assembly 32. This ensures that no matter how the user picks up the protective cover assembly 32, the fastener 33 will not fall completely out of the limiting cavity 322a. Furthermore, when the fastener 33, together with the protective cover assembly 32 with the limiting cavity 322a, connects the output electrode assembly 24 to the base 31, the risk of the fastener 33 easily falling out of the user's hand or tool and into the housing 10 due to its small size can be reduced.

[0069] Fastener 33 refers to a component used to press at least two output electrode tabs 241 in the output electrode assembly 24 together. Fastener 33 can be a bolt, screw, or compression spring, etc. When fastener 33 is a bolt or screw, it can pass through the output electrode assembly 24 and be threadedly connected to the base 31. When fastener 33 is a compression spring, it can elastically abut against the side of the output electrode assembly 24 away from the base 31, thereby allowing at least two output electrode tabs 241 in the output electrode assembly 24 to fit together and pressing the output electrode assembly 24 against the base 31, thus achieving the effect of connecting the output electrode assembly 24 to the base 31.

[0070] The technical solution of this application provides good protection for the battery cell 20 by placing the battery cell 20 inside the housing 10 of the battery device 100. The battery cell 20 is equipped with an output electrode assembly 24. The protective assembly 30 includes a base 31, a protective cover assembly 32, and fasteners 33. The output electrode assembly 24 is attached to the base 31, which provides stable support for the output electrode assembly 24. By connecting the protective cover assembly 32 to the base 31 and covering at least part of the output electrode assembly 24, the output electrode assembly 24 can be protected by both the protective cover and the base 31. By providing a limiting cavity 322a on the protective cover assembly 32, at least a portion of the fastener 33 is limited within the limiting cavity 322a, and at least a portion is disposed outside the limiting cavity 322a, and the output electrode assembly 24 is connected to the base 31, the output electrode assembly 24 is effectively fixed to ensure good conductivity of the output electrode assembly 24. At the same time, the cavity wall of the limiting cavity 322a can also limit the fastener 33, thereby reducing the risk of the fastener 33 falling into the housing 10 when the fastener 33 is connected to the output electrode assembly 24.

[0071] Please refer to the reference. Figures 4 to 7 In one embodiment of this application, the protective cover assembly 32 includes a main cover body 321 and an adapter 322. The main cover body 321 is connected to the base 31. The adapter 322 is detachably connected to the main cover body 321, and the adapter 322 forms a limiting cavity 322a. The limiting cavity 322a has an installation opening 322b on the side away from the base 31. The main cover body 321 can at least partially cover or open the installation opening 322b.

[0072] The main cover 321 refers to the component used to connect with the base 31. When the main cover 321 is connected to the base 31, it can be connected by screws, clips 322c, or other connection methods.

[0073] The adapter 322 is a component used to form a limiting cavity 322a and to limit the connection of the fastener 33. The adapter 322 can be a cubic structure or a cylindrical structure. The adapter 322 forms a limiting cavity 322a, and the side of the limiting cavity 322a away from the base 31 has a mounting port 322b, which facilitates the installation of the fastener 33 into the limiting cavity 322a through the mounting port 322b, reducing the installation difficulty of the fastener 33 into the limiting cavity 322a. The adapter 322 and the main cover 321 can be detachably connected via threaded connection, snap-fit ​​connection, plug-in connection, magnetic connection, etc., allowing the main cover 321 to be disassembled relative to the adapter 322. This exposes the mounting opening 322b of the limiting cavity 322a, while allowing the main cover 321 to cover the mounting opening 322b when connected to the adapter 322. Furthermore, the detachable connection of the main cover 321 and the adapter 322 facilitates the replacement of at least one of the fasteners 33, the adapter 322, and the main cover 321, reducing replacement costs. Alternatively, the adapter 322 and the main cover 321 can be connected via a rotatable or sliding connection, allowing the main cover 321 to have both an open and closed mounting opening 322b state when rotated or moved relative to the adapter 322. Specifically, during installation, the fastener 33 can be installed on the adapter 322 first, and then the adapter 322 with the fastener 33 can be connected to the main cover 321. At this time, at least part of the main cover 321 can cover the installation opening 322b, thereby limiting the fastener 33 in the circumferential direction, the direction of the fastener 33 toward the base 31, and the direction away from the base 31. This ensures that the fastener 33 will not come out of the limiting cavity 322a no matter which direction the user takes the fastener 33.

[0074] By connecting the adapter 322 to the main cover 321, the adapter 322 forms a limiting cavity 322a. The limiting cavity 322a has an installation port 322b on the side away from the base 31. The main cover 321 can at least partially cover or open the installation port 322b. This facilitates the fastener 33 to be installed in the limiting cavity 322a through the installation port 322b. On the other hand, it also allows the fastener 33 to be installed in the limiting cavity 322a and then the main cover 321 to close the installation port 322b. This improves the limiting effect on the fastener 33, ensuring that the fastener 33 will not come out of the limiting cavity 322a no matter how the user removes it, thereby reducing the risk of the fastener 33 falling into the housing 10 of the battery device 100.

[0075] Of course, in other examples, if the fastener 33 is installed in the limiting cavity 322a through the mounting port 322b and the fastener 33 connects the output electrode assembly 24 to the base 31, without considering replacing the fastener 33, the main cover 321 and the adapter 322 can be connected by a non-removable and non-movable method such as welding or bonding, so that the main cover 321 at least partially covers the mounting port 322b, thereby reducing the risk of the user touching the fastener 33 and the output electrode assembly 24 through the mounting port 322b.

[0076] Please refer to the reference. Figures 4 to 10 Based on the detachable connection between the main cover 321 and the adapter 322, in one embodiment of this application, the main cover 321 and the adapter 322 are snapped together.

[0077] The main cover 321 may include a top wall and a side wall connected to the top wall. When the adapter 322 is snapped onto the main cover 321, the adapter 322 may snap onto either the top wall or the side wall of the main cover 321. Specifically, the top wall or side wall of the main cover 321 may have a mounting hole, and the adapter 322 may be inserted into the mounting hole and interference-fitted with the mounting hole, thereby achieving the effect of mutual snap-fit ​​connection between the adapter 322 and the main cover 321. Alternatively, the main cover 321 and the adapter 322 may be connected by a snap-fit ​​322c to achieve the snap-fit ​​effect.

[0078] By snapping the main cover 321 and the adapter 322 together, the main cover 321 and the adapter 322 can be detachably connected. This allows the mounting port 322b of the upper limit cavity 322a of the adapter 322 to be exposed when the two are detached, so that the fastener 33 can be installed into the limit cavity 322a from the mounting port 322b. On the other hand, it also facilitates the quick assembly and disassembly of the main cover 321 and the adapter 322, improving the assembly and disassembly efficiency of the main cover 321 and the adapter 322.

[0079] Please refer to the reference. Figures 4 to 10 In one embodiment of this application, one of the main cover 321 and the adapter 322 is provided with a buckle hole 321a, and the other is provided with a buckle 322c, which is engaged in the buckle hole 321a.

[0080] Specifically, the main cover 321 is provided with a snap hole 321a, which can be located on the top wall or side wall of the main cover 321, and the adapter 322 is provided with a snap fastener 322c that can be inserted into the snap hole 321a. Alternatively, the main cover 321 is provided with a snap fastener 322c, which can be located on the top wall or side wall of the main cover 321, and the adapter 322 is provided with a snap hole 321a that allows the snap fastener 322c to be inserted.

[0081] This design improves the connection efficiency between the main cover 321 and the adapter 322, and provides a more stable connection compared to a plug-in connection.

[0082] Please refer to the reference. Figure 9 and Figure 10 Based on the scheme of movably connecting the main cover 321 and the adapter 322, in one embodiment of this application, the main cover 321 includes a fixed part 3211 and a movable cover 3212. The fixed part 3211 is connected to the base 31 and has a communication port 321d communicating with the mounting port 322b; the adapter 322 is connected to the fixed part 3211. The movable cover 3212 is movably installed at the communication port 321d to open or close the mounting port 322b.

[0083] The fixing part 3211 refers to the component or part used to connect with the base 31. The fixing part 3211 and the base 31 can be connected by means of threaded connection, snap-fit ​​or welding.

[0084] The movable cover 3212 refers to a cover that can move relative to the fixed part 3211, and the movable cover 3212 is used to cover the installation port 322b.

[0085] By providing a communication port 321d on the fixed part 3211 that communicates with the limiting cavity 322a, and the movable cover 3212 being movably disposed in the communication port 321d, the movable cover 3212 can open or close the communication port 321d when moving relative to the fixed part 3211. By communicating the communication port 321d with the mounting port 322b of the limiting cavity 322a, the movable cover 3212 can open or close the mounting port 322b when moving relative to the fixed part 3211. Therefore, when the movable cover 3212 opens the mounting port 322b, it is convenient to put in or take out the fastener 33; when the movable cover 3212 closes the mounting port 322b, the risk of the fastener 33 falling out of the mounting port 322b of the limiting cavity 322a can be reduced.

[0086] Please refer to the reference. Figure 4 and Figure 5 In one embodiment of this application, the fastener 33 is a screw connector that passes through the output electrode assembly 24 and is threadedly connected to the base 31.

[0087] A threaded connector is a fastener that can be threadedly connected to other components. Threaded connectors can be bolts, screws, or other fasteners with threaded structures.

[0088] By threading the screw connector through the output electrode assembly 24 and connecting it to the base 31, the fit between the two output electrode plates 241 in the output electrode assembly 24 can be adjusted by the thread engagement length between the screw connector and the base 31. This ensures that the two output electrode plates 241 in the output electrode assembly 24 can be effectively electrically connected, and that the output electrode assembly 24 and the base 31 can be pressed together, further ensuring that the two output electrode plates 241 in the output electrode assembly 24 can achieve an effective electrical connection.

[0089] Please refer to the reference. Figure 4 , Figure 5 , Figure 10 as well as Figure 11 In one embodiment of this application, the limiting cavity 322a has a through hole 322d on the side near the base 31; the fastener 33 includes a first limiting part 33a, a second limiting part 33b, and a fastening part 33c. The first limiting part 33a is confined within the limiting cavity 322a. The second limiting part 33b is connected to the first limiting part 33a and passes through the through hole 322d, and abuts against the output electrode assembly 24. The fastening part 33c is connected to the side of the second limiting part 33b away from the first limiting part 33a, passes through the output electrode assembly 24, and is fastened to the base 31.

[0090] The first limiting portion 33a refers to the part that can be confined within the limiting cavity 322a. Its outer dimensions are smaller than the size of the through hole 322d in the limiting cavity 322a. Therefore, when the first limiting portion 33a of the fastener 33 is located within the limiting cavity 322a, the risk of the fastener 33 falling out of the through hole 322d can be reduced. The first limiting portion 33a can be circular, rectangular, hexagonal, or other shapes. Specifically, when the fastener 33 is a screw-on component, the first limiting portion 33a can be provided with an internal hexagonal hole to allow the user to tighten or loosen the fastener 33 by inserting a screwdriver or electric screwdriver into the internal hexagonal hole. Of course, in other examples, the outer surface of the first limiting portion 33a can also be held by a wrench or the like to lock the fastener 33 onto the base 31 or loosen it from the base 31.

[0091] The second limiting portion 33b refers to the part that can abut against the output electrode assembly 24 to press the output electrode assembly 24 onto the base 31. When the second limiting portion 33b passes through the through hole 322d, its surface near the base 31 can be flush with the surface of the limiting cavity 322a near the base 31, so that both the surface of the second limiting portion 33b and the surface of the limiting cavity 322a near the base 31 abut against the output electrode assembly 24, thereby improving the firmness of pressing the output electrode assembly 24 onto the base 31. Alternatively, the second limiting portion 33b can be partially located inside the through hole 322d, with another part passing through the through hole 322d and extending towards the base 31, and the end of the second limiting portion 33b outside the through hole 322d abuts against the output electrode assembly 24. The second limiting portion 33b can be circular, rectangular, hexagonal, or other shapes.

[0092] The fastening part 33c is a threaded portion for threaded connection with the base 31. The fastening part 33c may be entirely threaded; or one end of the fastening part 33c that connects to the second limiting part 33b may be a smooth rod, while the other end of the fastening part 33c away from the second limiting part 33b may be threaded. The fastening part 33c can achieve the effect of both pressing the output electrode assembly 24 and threadedly connecting with the base 31.

[0093] By limiting the first limiting portion 33a of the fastener 33 within the limiting cavity 322a and inserting the second limiting portion 33b through the through hole 322d on the side of the limiting cavity 322a near the base 31 and abutting against the output electrode assembly 24, the risk of the fastener 33 completely detaching from the through hole 322d can be reduced, and the tight fit of the two output electrode tabs 241 in the output electrode assembly 24 can be ensured. By fixing the fastening portion 33c of the fastener 33 to the base 31, the fastener 33 has a stable state after being connected to the base 31, thereby ensuring that the fastening portion 33c can firmly abut against the output electrode assembly 24, and thus ensuring a good electrical connection between the two output electrode tabs 241 in the output electrode assembly 24.

[0094] Please refer to the reference. Figure 4 , Figure 5 as well as Figure 8 In one embodiment of this application, the main cover 321 is provided with a clearance opening 321c, which is connected to the mounting opening 322b and is coaxially arranged with the fastener 33; along the axial direction of the fastener 33, the projected area of ​​the fastener 33 on the main cover 321 is larger than the opening area of ​​the clearance opening 321c.

[0095] The clearance opening 321c refers to an opening for a locking tool to pass through, and the clearance opening 321c can be circular, rectangular or other shapes.

[0096] By connecting the clearance opening 321c to the mounting opening 322b and coaxially aligning it with the fastener 33, locking tools, such as screwdrivers or electric screwdrivers, can pass through the clearance opening 321c and the mounting opening 322b and extend into the limiting cavity 322a to tighten or loosen the fastener 33 without disassembling or opening the main cover 321. By making the projection of the fastener 33 onto the main cover 321 larger than the opening area of ​​the clearance opening 321c, the size of the clearance opening 321c is smaller than the outer contour size of the fastener 33, thereby reducing the risk of the fastener 33 detaching from the clearance opening 321c.

[0097] Please refer to the reference. Figure 4 and Figure 5 Based on the scheme that the main cover 321 can at least partially cover the mounting opening 322b, in one embodiment of this application, the distance from the side of the limiting cavity 322a near the base 31 to the side of the limiting cavity 322a away from the base 31 is defined as H1, the dimension from the side of the output electrode assembly 24 near the base 31 to the side of the output electrode assembly 24 away from the base 31 is defined as H2, and the dimension in the length extension direction of the fastener 33 is defined as H3; wherein, H1+H2≥H3.

[0098] This design avoids the risk of the fastener 33 hitting the main cover 321 and interfering with it after the fastener 33 is disconnected from the base 31.

[0099] Please refer to the reference. Figure 4 and Figure 8 In one embodiment of this application, the base 31 is snapped into the protective cover assembly 32.

[0100] Specifically, the base 31 may be provided with a snap-fit ​​part, and the protective cover may be provided with a corresponding snap-fit ​​hole 321b. Alternatively, the base 31 may be provided with a snap-fit ​​hole 321b, and the protective cover may be provided with a corresponding snap-fit ​​part that can snap into the snap-fit ​​hole 321b.

[0101] By snapping the base 31 into the protective cover assembly 32, the connection efficiency between the base 31 and the protective cover assembly 32 is improved, and the stability of the connection between the base 31 and the protective cover assembly 32 is ensured.

[0102] This application also proposes a protective component 30. Please refer to the reference. Figures 4 to 11The specific structure of the protective component 30 is as described in the above embodiments. Since this protective component 30 adopts all the technical solutions of the protective components 30 in all the above embodiments, it has at least all the beneficial effects brought by the protective components 30 in the above embodiments, which will not be described in detail here. Specifically, the protective component 30 includes a base 31, a protective cover assembly 32, and a fastener 33. The base 31 is configured to allow the output electrode assembly 24 of the battery device 100 to be attached. The protective cover assembly 32 is connected to the base 31 and covers at least part of the output electrode assembly 24; the protective cover assembly 32 has a limiting cavity 322a. A part of the fastener 33 is confined within the limiting cavity 322a, and another part extends out of the limiting cavity 322a, connecting the output electrode assembly 24 to the base 31.

[0103] The base 31 is a supporting component used to support the output electrode assembly 24. The base 31 can be plate-shaped, block-shaped or other shapes. In order to achieve a better insulation effect, the base 31 can be a plastic part or a metal part coated with an insulating layer, etc.

[0104] The protective cover assembly 32 is a component that covers the connection point of the output electrode assembly 24 to reduce the risk of the user touching the output electrode assembly 24 and the fasteners 33 used to secure the output electrode assembly 24. The protective cover assembly 32 may consist of a single integrally molded or welded cover, or it may include two separate covers that are detachably connected. When the protective cover assembly 32 is connected to the base 31, it can be connected by screws, clips 322c, or other methods. The protective cover assembly 32 can be made of plastic or a metal part coated with an insulating layer.

[0105] The protective cover assembly 32 is provided with a limiting cavity 322a, which is a cavity used to limit the fastener 33. Specifically, the limiting cavity 322a can be a cylindrical cavity, a cuboid cavity, or other irregularly shaped cavities. For example, the cavity can be a cavity with an opening on the side facing away from the base 31. The cavity wall of this cavity can limit the fastener 33 circumferentially within the limiting cavity 322a, thereby reducing the risk of the fastener 33 falling off when the output electrode assembly 24 is pressed onto the base 31 by the fastener 33, and also making it easier for the fastener 33 to be installed into the limiting cavity 322a from the opening on the side of the cavity facing away from the base 31. Alternatively, the cavity can be a closed cavity, and the cavity wall can also limit the fastener 33 on the side away from the base 31, thereby further improving the stability of the fastener 33 on the protective cover assembly 32. This ensures that no matter how the user picks up the protective cover assembly 32, the fastener 33 will not fall completely out of the limiting cavity 322a. Furthermore, when the fastener 33, together with the protective cover assembly 32 with the limiting cavity 322a, connects the output electrode assembly 24 to the base 31, the risk of the fastener 33 easily falling out of the user's hand or tool and into the housing 10 due to its small size can be reduced.

[0106] Fastener 33 refers to a component used to press at least two output electrode tabs 241 in the output electrode assembly 24 together. Fastener 33 can be a bolt, screw, or compression spring, etc. When fastener 33 is a bolt or screw, it can pass through the output electrode assembly 24 and be threadedly connected to the base 31. When fastener 33 is a compression spring, it can elastically abut against the side of the output electrode assembly 24 away from the base 31, thereby allowing at least two output electrode tabs 241 in the output electrode assembly 24 to fit together and pressing the output electrode assembly 24 against the base 31, thus achieving the effect of connecting the output electrode assembly 24 to the base 31.

[0107] The protective component 30 in this application includes a base 31, a protective cover assembly 32, and a fastener 33. The base 31 is used for the output electrode assembly 24 of the battery device 100 to be attached, thus providing stable support for the output electrode assembly 24. By connecting the protective cover assembly 32 to the base 31 and covering at least part of the output electrode assembly 24, the output electrode assembly 24 can be protected by both the protective cover and the base 31. By providing a limiting cavity 322a on the protective cover assembly 32, a portion of the fastener 33 is confined within the limiting cavity 322a, while the other portion extends out of the limiting cavity 322a. By connecting the output electrode assembly 24 to the base 31, the output electrode assembly 24 is effectively fixed to ensure good conductivity. Furthermore, the cavity wall of the limiting cavity 322a can limit the fastener 33, thereby reducing the risk of the fastener 33 falling into the housing 10 when connecting it to the output electrode assembly 24.

[0108] This application also proposes an electrical appliance. For example... Figure 1 As shown, the electrical device includes 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 repeated here. Specifically, the electrical device can be any of the aforementioned devices or systems that use the battery device 100.

[0109] The above are merely exemplary embodiments of this application and do not limit the patent scope of this application. Any equivalent structural transformations made based on the technical concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A battery device, characterized in that, It includes a housing, individual battery cells, and protective components. The individual battery cells are housed within the housing and are equipped with output electrode assemblies. The protective components include: A base is installed inside the housing, and the output electrode assembly is attached to the base. A protective cover assembly, connected to the base and covering at least a portion of the output electrode assembly, the protective cover assembly having a limiting cavity; and A fastener, at least a portion of which is confined within the limiting cavity and at least a portion of which is disposed outside the limiting cavity, and which connects the output electrode assembly to the base.

2. The battery device as claimed in claim 1, characterized in that, The protective cover assembly includes: Main cover body, the main cover body being connected to the base; and The adapter is connected to the main cover and has a limiting cavity. The limiting cavity has an installation port on the side away from the base. The main cover can at least partially cover or open the installation port.

3. The battery device as claimed in claim 2, characterized in that, The main cover is snapped into the adapter.

4. The battery device as claimed in claim 3, characterized in that, One of the main cover and the adapter is provided with a buckle hole, and the other is provided with a buckle, which is engaged in the buckle hole.

5. The battery device as claimed in claim 2, characterized in that, The main cover includes: A fixing part, which is connected to the base and has a communication port communicating with the mounting port, and an adapter is connected to the fixing part; and A movable cover is movably installed at the communication port to open or close the port.

6. The battery device according to any one of claims 2 to 5, characterized in that, The fastener is a screw-in connector, which passes through the output electrode assembly and is threadedly connected to the base.

7. The battery device as claimed in claim 6, characterized in that, The limiting cavity has a through hole on the side near the base; the fastener includes: A first limiting part is located within the limiting cavity; A second limiting portion, connected to the first limiting portion and passing through the passing hole, and abutting against the output electrode assembly; and The fastening part is connected to the side of the second limiting part away from the first limiting part, passes through the output electrode assembly, and is fastened to the base.

8. The battery device as claimed in claim 6, characterized in that, The main cover has an opening that communicates with the mounting port and is coaxially arranged with the fastener; along the axial direction of the fastener, the projected area of ​​the fastener on the main cover is larger than the opening area of ​​the opening.

9. The battery device as claimed in claim 8, characterized in that, The distance from the side of the limiting cavity near the base to the side of the limiting cavity away from the base is defined as H1, the dimension of the output electrode assembly from the side of the output electrode assembly near the base to the side of the output electrode assembly away from the base is defined as H2, and the dimension of the fastener in the length extension direction is defined as H3; wherein, H1+H2≥H3.

10. The battery device according to any one of claims 1 to 5, characterized in that, The base engages with the protective cover assembly.

11. A protective component, characterized in that, The protective components include: The base is configured to allow the output terminal assembly of the battery device to be connected; A protective cover assembly, the protective cover assembly being connected to the base and covering at least a portion of the output electrode assembly; the protective cover assembly having a limiting cavity; and A fastener, a portion of which is confined within the limiting cavity and another portion extends outside the limiting cavity, and connects the output electrode assembly to the base.

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

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