Battery device and electric device

Abstract

The utility model provides a battery device and a power utilization device.The battery device comprises a box body, a battery single body set and a circuit board assembly, the battery single body set and the circuit board assembly are arranged in the box body, and a mounting base in the circuit board assembly comprises a base body structure and a conductive part connected to the base body structure; the conductive part comprises a first connecting part and a second connecting part which are connected with each other, the first connecting part is connected to a conductive circuit of the circuit board, the electronic component is detachably connected to the seat body structure, and a pin of the electronic component abuts against the second connecting part. The first connecting part of the conductive part in the mounting seat is connected to the conductive circuit of the circuit board, and the electronic component is detachably connected to the seat body structure, so that the electronic component can be detachably mounted on the circuit board through the mounting seat, and the electronic component in the circuit board assembly is convenient to disassemble, assemble and replace; the maintenance convenience of the battery device is improved, and the maintenance cost of the battery device is reduced.

Description

Technical Field

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

[0002] Battery devices have advantages such as high specific energy and high power density, and are widely used in electronic devices and transportation vehicles, such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships and power tools.

[0003] As the application scope of battery devices continues to expand, the number of battery devices in the market is also increasing, and the maintenance of battery devices is receiving more and more attention. How to improve the ease of maintenance and efficiency of battery devices is becoming increasingly important to those skilled in the art. Utility Model Content

[0004] In view of the above problems, this application provides a battery device and an electrical device, which is easy to maintain.

[0005] In a first aspect, some embodiments of this application provide a battery device, which includes a housing, a battery cell group, and a circuit board assembly. The battery cell group and the circuit board assembly are disposed in the housing. The circuit board assembly is electrically connected to the battery cell group. The circuit board assembly includes a circuit board, a mounting base, and electronic components. The mounting base includes a base structure and a conductive element connected to the base structure. The conductive element includes a first connecting portion and a second connecting portion that are interconnected. The first connecting portion is connected to the conductive lines of the circuit board. The electronic components are detachably connected to the base structure, and the pins of the electronic components abut against the second connecting portion.

[0006] In the above structure, the first connecting part of the conductive component in the mounting base is connected to the conductive line of the circuit board, and the pins of the electronic component abut against the second connecting part, so that the electronic component can be electrically connected to the conductive line of the circuit board through the conductive component, thus connecting the electronic component into the conductive line of the circuit board and realizing the installation of the electronic component in the circuit board. Since the first connecting part of the conductive component in the mounting base is connected to the conductive line of the circuit board and the electronic component is detachably connected to the base structure, the electronic component can be detachably installed and removed from the circuit board through the mounting base. This not only facilitates the disassembly and replacement of electronic components in the circuit board assembly, improving the convenience of battery device maintenance, but also helps to reduce the maintenance cost of the battery device.

[0007] According to some embodiments of the present application, the battery device has a housing structure forming a cavity, a second connecting portion located within the cavity, a pin located within the cavity and abutting against the second connecting portion, and a first connecting portion extending outside the cavity and located on the side of the housing structure facing the circuit board. By having both the second connecting portion and the pin located within the cavity, the cavity not only enables the electronic components to be positioned, but also protects the contact surfaces of the second connecting portion and the pin within the cavity, thereby improving the reliability of the connection between the second connecting portion and the pin.

[0008] According to some embodiments of the present application, the battery device contains electronic components within a cavity with an opening. A limiting mechanism is provided on the seat structure at the edge of the opening to block the electronic components within the cavity. By providing a limiting mechanism on the seat structure at the edge of the opening, the electronic components in the cavity can be blocked from exiting the opening, thereby improving the reliability of the electronic components housed within the cavity.

[0009] According to some embodiments of the battery device provided in this application, the limiting mechanism includes a locking protrusion connected to the base structure and protruding from the inner wall of the cavity towards the cavity. By providing a locking protrusion on the base structure at the opening edge and making the locking protrusion protrude from the inner wall of the cavity towards the cavity, the locking protrusion can block the electronic components in the cavity, making it difficult for the electronic components to detach from the cavity. Under the action of the locking protrusion, the electronic components can be connected to the base structure, realizing a detachable connection between the electronic components and the base structure. Since the locking protrusion is provided on the base structure at the opening edge, maintenance personnel can manually bend the locking protrusion to reduce the obstruction of the locking protrusion on the electronic components, allowing the electronic components to be easily detached from the cavity.

[0010] According to some embodiments of the battery device provided in this application, a latch is movably connected to a base structure. The latch has a locked position, and the limiting mechanism further includes a locking structure. The latch is configured to block and hold electronic components in the cavity in the locked position under the action of the locking structure. When the latch is in the locked position, it can maintain the blockage of the electronic components, making it difficult for the electronic components to dislodge from the opening. When the latch is in the unlocked position, it no longer blocks the electronic components, allowing them to dislodge from the opening.

[0011] According to some embodiments of the present application, the battery device is provided with a guide slope. Along the protruding direction of the protrusion, the distance between the guide slope and the electronic component in the opening direction gradually decreases. This allows the electronic component to pass through the protrusion more smoothly when it is inserted through the opening. It also allows the protrusion to undergo better elastic deformation to provide space for the electronic component to pass through.

[0012] According to some embodiments of the present application, the battery device has a retaining surface provided on the protrusion. The direction of the retaining surface is opposite to the direction of the opening, and the retaining surface abuts against the electronic component. By making the direction of the retaining surface parallel and opposite to the direction of the opening, and making the retaining surface perpendicular to the direction of the opening, the retaining surface better blocks the electronic component when it comes out of the opening, effectively reducing the possibility of the electronic component coming out of the opening, and making the connection between the electronic component and the base structure reliable.

[0013] According to some embodiments of the battery device provided in this application, the base structure is provided with a notch, the notch opening of which communicates with an opening, and the notch penetrates the base structure along its thickness direction to communicate with a cavity. The notch penetrates the wall structure along its thickness direction, allowing the cavity to communicate with the outside through the notch. This enables maintenance personnel to hold electronic components through the notch to remove or insert them into the cavity, improving the ease of assembly and disassembly of electronic components.

[0014] According to some embodiments of the present application, the battery device further includes a body connected to the pins. One of the outer surface of the body and the inner wall of the cavity is provided with a groove, and the other is provided with a first protrusion. The first protrusion is engaged with the groove, thereby realizing a detachable connection between the electronic component and the base structure.

[0015] According to some embodiments of the battery device provided in this application, the outer surface of the first protrusion is configured as an arc-shaped surface. By configuring the outer surface of the first protrusion as an arc-shaped surface, not only can the first protrusion slide into the groove more smoothly, realizing a smooth engagement between the first protrusion and the groove; it also allows the first protrusion to slide out of the groove under the action of external force, realizing a smooth disengagement between the first protrusion and the groove, which is beneficial to improving the convenience of disassembly and assembly of electronic components and the base structure.

[0016] According to some embodiments of the present application, the battery device provided has a second protrusion on the surface of the second connection portion facing the pin. The second protrusion abuts against the pin, so that the second connection portion with the second protrusion can abut against the pin more tightly. This not only helps to improve the reliability of the connection between the pin and the second connection portion, but also helps to optimize the conductivity of the connection between the pin and the second connection portion.

[0017] According to some embodiments of the battery device provided in this application, a conductive structure layer is provided on the surface where the pin abuts against the second protrusion. The Rockwell hardness of the conductive structure layer is lower than that of the second protrusion. By setting the Rockwell hardness of the conductive structure layer to be lower than that of the second protrusion, the second protrusion can be pressed into the conductive structure layer when it abuts against the pin. This improves the reliability of the connection between the pin and the second connection portion and further enhances the conductivity of the connection between the pin and the second connection portion.

[0018] According to some embodiments of the battery device provided in this application, a coating is provided on the surface of the second connection portion that abuts against the pin, and the conductivity of the coating is higher than that of the second connection portion. By providing a coating on the surface of the second connection portion facing the pin and setting the conductivity of the coating to be higher than that of the second connection portion, the coating can improve the conductivity at the connection between the second connection portion and the pin.

[0019] According to some embodiments of the present application, the battery device is provided in which the first connection part is soldered to the conductive line of the circuit board, which not only makes the connection between the first connection part and the conductive line smooth, but also improves the connection stability between the first connection part and the conductive line, so that the circuit board firmly supports the mounting base.

[0020] According to some embodiments of the present application, the battery device has an injection-molded base structure, and the conductive component further includes an embedded portion. The first connecting portion and the second connecting portion are connected through the embedded portion, which is embedded in the base structure to improve the connection stability between the conductive component and the base structure.

[0021] Secondly, some embodiments of this application provide an electrical device that includes a battery device provided by any of the above-described technical solutions, the battery device being used to provide electrical energy.

[0022] The technical solutions provided by the embodiments of this disclosure have at least the following beneficial effects:

[0023] Some embodiments of this application provide a battery device including a housing, a battery cell pack, and a circuit board assembly. The battery cell pack and the circuit board assembly are disposed in the housing. The circuit board assembly is electrically connected to the battery cell pack. The circuit board assembly includes a circuit board, a mounting base, and electronic components. The mounting base includes a base structure and a conductive element connected to the base structure. The conductive element includes a first connecting portion and a second connecting portion that are interconnected. The first connecting portion is connected to a conductive line on the circuit board. The electronic components are detachably connected to the base structure, and the pins of the electronic components abut against the second connecting portion. In the above structure, the first connecting portion of the conductive element in the mounting base is connected to the conductive line on the circuit board, and the pins of the electronic components abut against the second connecting portion, so that the electronic components can be electrically connected to the conductive line on the circuit board through the conductive element, thereby integrating the electronic components into the conductive line on the circuit board and realizing the mounting of the electronic components on the circuit board. Since the first connecting part of the conductive component in the mounting base is connected to the conductive line of the circuit board and the electronic components are detachably connected to the base structure, the electronic components can be detachably installed on the circuit board through the mounting base. This not only facilitates the disassembly and replacement of electronic components in the circuit board assembly and improves the convenience of battery device maintenance, but also helps to reduce the maintenance cost of the battery device. Attached Figure Description

[0024] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0025] Figure 1 These are schematic diagrams of the vehicle structure provided in some embodiments of this application;

[0026] Figure 2 This is a schematic diagram showing the disassembled structure of a battery device provided in some embodiments of this application;

[0027] Figure 3 This is a partial structural schematic diagram of a circuit board assembly provided in some embodiments of this application;

[0028] Figure 4 A cross-sectional view of the mounting base provided in some embodiments of this application;

[0029] Figure 5 A cross-sectional view of the mounting base provided in some other embodiments of this application;

[0030] Figure 6 A cross-sectional view of the mounting base provided in some embodiments of this application;

[0031] Figure 7This is a schematic diagram showing the electronic components provided in some embodiments of this application mounted on a mounting base;

[0032] Figure 8 Cross-sectional views of electronic components provided in some embodiments of this application;

[0033] Figure 9 A schematic diagram of the mounting base provided in some embodiments of this application;

[0034] Figure 10 A cross-sectional view of the mounting base provided in some embodiments of this application;

[0035] Figure 11 This is a schematic diagram showing the electronic components mounted on the mounting base according to other embodiments of this application;

[0036] Figure 12 A cross-sectional view of the mounting base provided in some other embodiments of this application.

[0037] In the diagram:

[0038] 1. Vehicle; 2. Battery assembly; 3. Controller; 4. Motor; 5. Housing; 5a. First housing section; 5b. Second housing section; 5c. Accommodation space; 7. Battery cell pack; 8. Circuit board assembly; 81. Circuit board; 82. Mounting base; 821. Base structure; 8210. Slot; 8211. Cavity; 8212. Opening; 8213. Protrusion; 82131. Guide slope; 82132. Supporting surface; 8214. Notch; 8215. First protrusion; 8216. Locking structure; 8217. Flip cover; 82171. Snap-on; 8218. Shaft; 822. Conductive component; 8221. First connecting part; 8222. Second connecting part; 82221. Second protrusion; 8223. Embedded part; 83. Electronic component; 831. Pin; 832. Body; 8321. Groove. Detailed Implementation

[0039] 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.

[0040] It should be noted that, unless otherwise stated, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by those skilled in the art to which the embodiments of this application pertain.

[0041] 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", "circumferential", etc., 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 do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0042] Furthermore, technical terms such as "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise explicitly defined.

[0043] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the technical terms such as "installation," "connection," "joining," and "fixing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. 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.

[0044] In the description of the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0045] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely used in individual battery cells such as energy storage containers or energy storage cabinets. With the continuous expansion of battery device applications, the number of battery devices in the market is also increasing, significantly increasing the workload for maintenance.

[0046] The battery apparatus mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar.

[0047] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0048] A battery cell can be a rechargeable battery cell, which refers to a battery cell that can be recharged after being discharged to activate the active materials and continue to be used.

[0049] Battery cells can be lithium-ion cells, sodium-ion cells, sodium-lithium-ion cells, lithium metal cells, sodium metal cells, lithium-sulfur cells, magnesium-ion cells, nickel-metal hydride cells, nickel-cadmium cells, lead-acid cells, etc.

[0050] As an example, a battery cell assembly can be a battery module, which is formed by arranging and fixing multiple battery cells together to form an independent module. As another example, a battery module can be formed by bundling multiple battery cells together with cable ties.

[0051] In some embodiments, the battery device may include one or more battery packs, which may include one or more individual battery cells. As an example, a battery pack includes a housing and one or more individual battery cells, which are housed within the housing, for example, by a fixed arrangement. As yet another example, the battery device may include multiple battery packs, which may be connected in series, parallel, or in a mixed configuration.

[0052] As an example, the enclosure may include a first enclosure and a second enclosure. The first enclosure and the second enclosure are fastened together to form a closed space inside the enclosure to house the individual battery cells. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first enclosure may be a top cover or a bottom plate.

[0053] As an example, the enclosure may include a top cover, a frame, and a bottom plate. The top cover and bottom plate are connected to the frame, creating an enclosed space inside the enclosure to house the individual battery cells.

[0054] In some embodiments, the housing may be part of the vehicle's chassis structure. For example, a portion of the housing may be at least a part of the vehicle's floor, or a portion of the housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0055] In some embodiments, the battery device may be an energy storage device. Energy storage devices include energy storage containers, energy storage cabinets, etc.

[0056] As the application of battery devices continues to expand across various fields, the market demand for battery devices is also increasing, undoubtedly placing a significant burden on the maintenance of these devices. Therefore, improving the ease and efficiency of battery device maintenance is receiving increasing attention from those skilled in the art.

[0057] As the precision of controlling various parameters (such as temperature) in battery devices increases, the control precision of signals by electronic components on the circuit boards is also constantly improving (e.g., the fusing current range of fuses is becoming increasingly narrow). Signals exceeding these limits can easily damage electronic components (e.g., surge currents generated during circuit connections can easily cause fuse failure), which undoubtedly increases the maintenance workload of battery devices. Currently, the common repair solution for damaged electronic components on circuit boards is to directly replace the entire circuit board, but this results in significant waste. Although in some cases, repairs can be achieved by replacing the damaged electronic components, the difficulty of replacing these components makes this approach inconvenient, thus complicating battery device maintenance.

[0058] To improve the convenience and efficiency of battery device maintenance, some embodiments of this application provide a battery device including a housing, a battery cell group, and a circuit board assembly. The battery cell group and the circuit board assembly are disposed in the housing, and the circuit board assembly is electrically connected to the battery cell group. The circuit board assembly includes a circuit board, a mounting base, and electronic components. The mounting base includes a base structure and a conductive element connected to the base structure. The conductive element includes a first connecting portion and a second connecting portion that are interconnected. The first connecting portion is connected to the conductive lines of the circuit board. The electronic components are detachably connected to the base structure, and the pins of the electronic components abut against the second connecting portion. In the above structure, the first connecting portion of the conductive element in the mounting base is connected to the conductive lines of the circuit board, and the pins of the electronic components abut against the second connecting portion, so that the electronic components can be electrically connected to the conductive lines of the circuit board through the conductive element, thereby integrating the electronic components into the conductive lines of the circuit board and realizing the installation of the electronic components on the circuit board. Since the first connecting part of the conductive component in the mounting base is connected to the conductive line of the circuit board and the electronic components are detachably connected to the base structure, the electronic components can be detachably installed on the circuit board through the mounting base. This not only facilitates the disassembly and replacement of electronic components in the circuit board assembly and improves the convenience of battery device maintenance, but also helps to reduce the maintenance cost of the battery device.

[0059] The battery device described in the embodiments of this application is applicable to electrical devices that use battery devices.

[0060] Electrical devices can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, among others. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc.

[0061] For ease of explanation, the following embodiments will be described using a vehicle as an example of an electrical device according to an embodiment of this application.

[0062] Figure 1 A schematic diagram of a vehicle provided for some embodiments of this application.

[0063] like Figure 1 As shown, a battery device 2 is installed inside the vehicle 1. The battery device 2 can be located at the bottom, front, or rear of the vehicle 1. The battery device 2 can be used to power the vehicle 1; for example, the battery device 2 can serve as the operating power source for the vehicle 1.

[0064] The vehicle 1 may also include a controller 3 and a motor 4. The controller 3 is used to control the battery device 2 to supply power to the motor 4, for example, for the power needs of the vehicle 1 during starting, navigation and driving.

[0065] In some embodiments of this application, the battery device 2 can not only serve as the operating power source for the vehicle 1, but also as the driving power source for the vehicle 1, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1.

[0066] Figure 2 This is a schematic diagram showing the disassembled structure of a battery device provided in some embodiments of this application. For example... Figure 2 As shown, the battery device 2 includes a housing 5 and a battery cell pack 7, which is housed within the housing 5. The battery cell pack 7 may include multiple battery cells, each of which can be the smallest unit that makes up a battery.

[0067] The housing 5 is used to accommodate the battery cell pack 7, and the housing 5 can have various structures. In some embodiments, the housing 5 may include a first housing portion 5a and a second housing portion 5b, which overlap each other, and together define a receiving space 5c for accommodating the battery cell pack 7. The second housing portion 5b may be a hollow structure with one end open, and the first housing portion 5a may be a plate-like structure, covering the open side of the second housing portion 5b to form a housing 5 with the receiving space 5c; alternatively, both the first housing portion 5a and the second housing portion 5b may be hollow structures with one side open, with the open side of the first housing portion 5a covering the open side of the second housing portion 5b to form a housing 5 with the receiving space 5c. Of course, the first housing portion 5a and the second housing portion 5b can be various shapes, such as cylinders, cuboids, etc.

[0068] To improve the sealing performance after the first housing part 5a and the second housing part 5b are connected, a sealing element, such as sealant or sealing ring, can also be provided between the first housing part 5a and the second housing part 5b.

[0069] Assuming that the first box section 5a covers the top of the second box section 5b, the first box section 5a can also be called the upper box cover, and the second box section 5b can also be called the lower box.

[0070] In battery device 2, the battery cell group 7 can contain one or more battery cells. If there are multiple battery cells, they can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells are connected in both series and parallel configurations. Multiple battery cells can be directly connected in series, parallel, or in a mixed configuration and then housed in the housing 5. Alternatively, multiple battery cells can first be connected in series, parallel, or in a mixed configuration to form a battery module, and then the multiple battery modules can be connected in series, parallel, or in a mixed configuration to form a whole and housed in the housing 5.

[0071] Some embodiments of this application provide a battery device 2, which includes a housing 5, a battery cell pack 7, and a circuit board assembly 8. The battery cell pack 7 and the circuit board assembly 8 are disposed in the housing 5, and the circuit board assembly 8 is electrically connected to the battery cell pack 7. (See reference...) Figure 3 The circuit board assembly 8 includes a circuit board 81, a mounting base 82, and electronic components 83, as shown in the reference. Figure 4 , Figure 5 and Figure 6 The mounting base 82 includes a base structure 821 and a conductive element 822 connected to the base structure 821. The conductive element 822 includes a first connecting portion 8221 and a second connecting portion 8222 connected to each other. The first connecting portion 8221 is connected to the conductive lines of the circuit board 81. (Refer to...) Figure 7 and Figure 8Electronic component 83 is detachably connected to base structure 821, and pin 831 of electronic component 83 abuts against second connection part 8222.

[0072] The housing 5 can be a component that provides a storage space 5c. The storage space 5c is used to house components such as battery cells, wiring harnesses, and circuit board assemblies located inside the battery device 2. It can not only isolate the storage space from the outside world and provide a suitable environment for the normal operation of devices such as battery cells and circuit board assemblies, but also protect the devices such as battery cells, wiring harnesses, and circuit board assemblies and reduce the possibility of damage from impacts.

[0073] The battery cells in battery cell group 7 can be rechargeable battery cells. Rechargeable battery cells are those that can be recharged after discharge to reactivate the active materials and continue to be used. These battery cells can be lithium-ion, sodium-ion, sodium-lithium-ion, lithium metal, sodium metal, lithium-sulfur, magnesium-ion, nickel-metal hydride, nickel-cadmium, lead-acid, etc.

[0074] For example, the battery cell can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic battery cells, such as hexagonal prismatic battery cells.

[0075] When the battery cell group 7 includes multiple battery cells, the multiple battery cells can be arranged and fixed to form a battery module.

[0076] The circuit board assembly 8, electrically connected to the battery cell group 7, can collect signals such as current and temperature from the battery cell group 7. The circuit board 81 can be the main structure of the circuit board assembly 8; it is a plate-like structure that provides support for and electrically connects the electronic components 83. The circuit board 81 includes an insulating substrate and conductive lines disposed on the insulating substrate. The electronic components 83 can be fixed to the insulating substrate and electrically connected to the conductive lines on the circuit board 81. Exemplarily, the circuit board assembly 8 can be a rigid circuit board assembly, a flexible circuit board assembly, or a rigid-flex circuit board assembly.

[0077] Mounting base 82 can be a base structure 821 for connecting electronic components 83 to circuit boards 81. Mounting base 82 is connected to circuit boards 81, and by connecting electronic components 83 to mounting base 82, electronic components 83 are mounted on circuit boards 81. Base structure 821 can be the main structure of mounting base 82, which carries electronic components 83. Base structure 821 can be an insulating structure, which can reduce the possibility of short circuits in the carried electronic components 83. Conductive component 822 can be a component in mounting base 82 for electrically connecting the mounted electronic components 83 to conductive lines in circuit boards 81.

[0078] The conductive element 822 is connected to the base structure 821. This can mean that the conductive element 822 is connected to the base structure 821 by screws, rivets, or other connectors; it can also mean that the conductive element 822 is connected to the base structure 821 by adhesive or other means; or it can mean that the wall of the base structure 821 has a perforated structure, through which the conductive element 822 passes and is fixed in place, thus connecting the conductive element 822 to the base structure 821. By connecting the conductive element 822 to the base structure 821, and then connecting the conductive element 822 to the circuit board 81, the structure on the base structure 821 and other mounting brackets 82 can be supported by the circuit board 81, thereby supporting the electronic components 83 connected to the base structure 821.

[0079] The first connecting portion 8221 and the second connecting portion 8222 are interconnected structural parts of the conductive member 822. Specifically, the first connecting portion 8221 is the structural part of the conductive member 822 used for connection to conductive lines in the circuit board 81, and the second connecting portion 8222 is the structural part of the conductive member 822 used for connection to electronic components 83. (Refer to...) Figure 4 The conductive component 822 can be configured as a U-shaped structure; refer to Figure 5 The conductive component 822 can be configured as a cuboid structure.

[0080] The first connecting portion 8221 is connected to the conductive line of the circuit board 81. This can mean that the first connecting portion 8221 is in direct contact with the conductive line of the circuit board 81, or that the first connecting portion 8221 is connected to the conductive line of the circuit board 81 through conductive adhesive, so that the conductive line is electrically connected to the conductive component 822. For example, the first connecting portion 8221 can be connected to the conductive line of the circuit board 81 through connectors such as screws and rivets, or it can be connected to the conductive line of the circuit board 81 through welding, adhesive bonding, or other methods.

[0081] Electronic component 83 may include a body 832 and pins 831 that are interconnected. The body 832 is the main structure of electronic component 83, and the pins 831 extend from the body 832. The pins 831 are used to electrically connect electronic component 83 to circuit board 81. By holding the pins 831 of electronic component 83 against the second connecting part 8222, electronic component 83 is electrically connected to the conductive line of circuit board 81 through conductive part 822, thereby realizing the access of electronic component 83 in circuit board 81 and enabling electronic component 83 to function in circuit board assembly 8.

[0082] By detachably connecting the electronic component 83 to the base structure 821, the electronic component 83 can be easily removed from the circuit board 81, making it easy to replace the electronic component 83 in the circuit board assembly 8. This improves the ease of maintenance of the battery device 2 and reduces the possibility of replacing the entire circuit board assembly 8, thus reducing the maintenance cost of the battery device 2. For example, the detachable connection between the electronic component 83 and the base structure 821 can be achieved by connecting bolts, snap-fitting, or plugging into the base structure 821.

[0083] For example, refer to Figure 6 Pins 831 can be provided on multiple outer surfaces of the main body 832, so that when the electronic component 83 is connected to the base structure 821, the electronic component 83 can be conveniently abutted against the second connection part 8222 of the conductive part 822 through any pin 831 on the multiple outer surfaces, which helps to improve the convenience of connecting the pin 831 and the second connection part 8222.

[0084] For example, while pins 831 are provided on multiple outer surfaces of the main body 832, a second connecting portion 8222 is also provided on the surface of the base structure 821 opposite to the outer surface of the main body 832 on which the pins 831 are provided. This allows the pins 831 and the second connecting portion 8222 to abut from multiple points, resulting in a larger connection area between the pins 831 and the second connecting portion 8222. This helps to reduce the resistance at the connection point between the pins 831 and the second connecting portion 8222.

[0085] For example, the electronic component 83 may have two pins 831, and the conductive element 822 may also have two. The second connecting portion 8222 of the two conductive elements 822 respectively abuts against the two pins 831, so that the two conductive elements 822 are electrically connected to the two pins 831 of the electronic component 83 respectively.

[0086] For example, electronic component 83 can be a resistor, fuse, inductor, capacitor, etc. Resistors in circuit board assembly 8 can be used for current limiting, voltage division, and stabilizing the circuit operating current. The resistors can also be read by the battery management system to identify information such as the type of battery cell, manufacturer, and battery device version. Capacitors in circuit board assembly 8 can be used for power supply filtering, signal decoupling, and DC blocking. Capacitors that suppress circuit interference can also be connected in parallel with the thermistor in circuit board 81 to improve the accuracy of the thermistor's temperature sampling. Inductors in circuit board assembly 8 can be used for high-frequency signal choke, power supply filtering, and forming resonant circuits. Fuses in circuit board assembly 8 can be used for overcurrent protection, cutting off fault circuits, and protecting other electronic components in circuit board assembly 8.

[0087] In the above structure, the first connecting portion 8221 of the conductive element 822 in the mounting base 82 is connected to the conductive line of the circuit board 81, and the pin 831 of the electronic component 83 abuts against the second connecting portion 8222, so that the electronic component 83 can be electrically connected to the conductive line of the circuit board 81 through the conductive element 822, thus connecting the electronic component 83 into the conductive line of the circuit board 81 and realizing the installation of the electronic component 83 in the circuit board 81. Since the first connecting portion 8221 of the conductive element 822 in the mounting base 82 is connected to the conductive line of the circuit board 81 and the electronic component 83 is detachably connected to the base structure 821, the electronic component 83 can be detachably installed on the circuit board 81 through the mounting base 82. Therefore, the electronic component 83 in the circuit board assembly 8 can be easily disassembled and replaced, which not only improves the convenience of maintenance of the battery device 2, but also helps to reduce the maintenance cost of the battery device 2.

[0088] In some embodiments, reference Figure 4 , Figure 5 , Figure 6 and Figure 9 The seat structure 821 forms a cavity 8211, the second connecting part 8222 is located in the cavity 8211, the pin 831 is located in the cavity 8211 and abuts against the second connecting part 8222, and the first connecting part 8221 extends out of the cavity 8211 and is located on the side of the seat structure 821 facing the circuit board 81.

[0089] The cavity 8211 is a spatial structure enclosed by the base structure 821, which is used to accommodate at least some electronic components 83.

[0090] The second connecting portion 8222 is located within the cavity 8211, meaning it is situated within the cavity 8211. Exemplarily, the second connecting portion 8222, located within the cavity 8211, is disposed flush with the inner wall surface of the cavity 8211, thereby reducing the space occupied by the second connecting portion 8222 within the cavity 8211. Exemplarily, the second connecting portion 8222 is embedded in the base structure 821, and the surface of the second connecting portion 8222 that abuts against the pin 831 is flush with the inner wall surface of the cavity 8211, allowing the pin 831 to abut against the second connecting portion 8222 when the electronic component 83 is inserted into the cavity 8211.

[0091] Pin 831 is located in cavity 8211 and abuts against second connection part 8222. This means that pin 831 of electronic component 83 extends into cavity 8211 and abuts against second connection part 8222 located in cavity 8211, thereby realizing electrical connection between pin 831 of electronic component 83 and conductive part 822.

[0092] The first connecting portion 8221 extends out of the cavity 8211 and is located on the side of the base structure 821 facing the circuit board 81. This can mean that the first connecting portion 8221 of the conductive member 822 extends out of the cavity 8211 and onto the side of the base structure 821 facing the circuit board 81, so that the first connecting portion 8221 can be easily connected to the conductive lines on the circuit board 81. Alternatively, the first connecting portion 8221 of the conductive member 822 is embedded in the base structure 821, and the surface of the first connecting portion 8221 for connecting to the circuit board 81 is flush with the outer surface of the base structure 821, so that the first connecting portion 8221 can be easily connected to the conductive lines on the circuit board 81.

[0093] By placing both the second connection part 8222 and the pin 831 within the cavity 8211, the cavity 8211 not only enables the electronic component 83 to be positioned, but also protects the contact surfaces of the second connection part 8222 and the pin 831 within the cavity 8211, thereby improving the reliability of the connection between the second connection part 8222 and the pin 831.

[0094] In some embodiments, the electronic component 83 is located in the cavity 8211, the cavity 8211 is provided with an opening 8212, and a limiting mechanism is provided on the seat structure 821 at the edge of the opening 8212, the limiting mechanism can block the electronic component 83 in the cavity 8211.

[0095] The cavity 8211 is a spatial structure with an opening 8212 enclosed by the base structure 821. The cavity 8211 is connected to the outside through the opening 8212 and is used to load electronic components 83 into the cavity 8211.

[0096] The electronic component 83 is located in the cavity 8211, which means that the entire electronic component 83 extends into the cavity 8211 from the opening 8212.

[0097] The limiting mechanism can be a mechanism used to limit the electronic component 83 located in the cavity 8211, thereby reducing the possibility of the electronic component 83 detaching from the cavity 8211. For example, the limiting mechanism can be a cover that fits over the seat structure 821. By providing a limiting mechanism on the seat structure 821 at the edge of the opening 8212, the limiting mechanism can prevent the electronic component 83 from detaching from the opening 8212, which helps to improve the reliability of the electronic component 83 being accommodated in the cavity 8211.

[0098] In some embodiments, continue to refer to Figure 7 The limiting mechanism includes a locking protrusion 8213, which is connected to the seat structure 821 and protrudes from the inner wall of the cavity 8211 toward the cavity 8211.

[0099] A latching protrusion 8213 is provided on the seat structure 821 at the edge of the opening 8212. This means that the latching protrusion 8213 is located on the seat structure 821 at the edge of the opening 8212. By making the latching protrusion 8213 protrude from the inner wall of the cavity 8211 towards the interior of the cavity 8211, the latching protrusion 8213 can interact with the electronic component 83 located in the cavity 8211, so that the electronic component 83 can be detachably connected to the seat structure 821.

[0100] By providing a retaining protrusion 8213 on the seat structure 821 at the edge of the opening 8212, and having the retaining protrusion 8213 protrude from the inner wall of the cavity 8211 towards the cavity 8211, the retaining protrusion 8213 can block the electronic component 83 in the cavity 8211, making it difficult for the electronic component 83 to detach from the cavity 8211. Under the action of the retaining protrusion 8213, the electronic component 83 can be connected to the seat structure 821, achieving a detachable connection between the electronic component 83 and the seat structure 821. Because the retaining protrusion 8213 is located on the seat structure 821 at the edge of the opening 8212, maintenance personnel can manually bend the retaining protrusion 8213 to reduce its obstruction of the electronic component 83, allowing the electronic component 83 to be easily detached from the cavity 8211.

[0101] In some embodiments, reference Figure 10 The limiting mechanism also includes a locking structure 8216, a latch 8213 movably connected to the base structure 821, the latch 8213 having a locking position, and the latch 8213 being configured to block and hold the electronic components 83 in the cavity 8211 in the locking position under the action of the locking structure 8216.

[0102] The locking structure 8216 can be a structure used to keep the latch 8213 in a blocking state against the electronic component 83, which helps to improve the reliability of the latch 8213 blocking the electronic component 83. The locking structure 8216 can be connected to both the latch 8213 and the base structure 821. Exemplarily, the locking structure 8216 can be connected to both the latch 8213 and the base structure 821 simultaneously, so that the locking structure 8216 can function on the latch 8213.

[0103] The latch 8213 is movably connected to the base structure 821. This can mean that the latch 8213 is slidably connected to the base structure 821, or that the latch 8213 is rotatably connected to the base structure 821. The latch 8213 can have an unlocked position and a locked position. By making the latch 8213 movably connected to the base structure 821, the latch 8213 can switch between the unlocked position and the locked position. The unlocked position and the locked position can be two different positions of the latch 8213. When the latch 8213 is in the locked position, the latch 8213 can maintain its obstruction of the electronic component 83, and the electronic component 83 is not easily dislodged from the opening 8212. When the latch 8213 is in the unlocked position, the latch 8213 no longer obstructs the electronic component 83, and the electronic component 83 can be dislodged from the opening 8212.

[0104] The latch 8213 is configured to block and hold the electronic component 83 in the cavity 8211 in a locked position under the action of the locking structure 8216. This means that under the action of the locking structure 8216, the latch 8213 can be held in a locked position. The latch 8213 blocks the electronic component 83 in the cavity 8211 from the opening 8212 to reduce the possibility of the electronic component 83 falling out of the cavity 8211.

[0105] For example, the locking structure 8216 is an elastic element (e.g., a spring), and the latch 8213 is slidably connected to the base structure 821. One end of the locking structure 8216 is connected to the base structure 821, and the other end is connected to the latch 8213. Under the action of the locking structure 8216, the latch 8213 protrudes from the inner wall of the cavity 8211 towards the cavity 8211, so that the latch 8213 can block the electronic component 83 in the cavity 8211, making it difficult for the electronic component 83 to fall out of the cavity 8211.

[0106] In other embodiments, reference is made to... Figure 11The limiting mechanism also includes a flip cover 8217 that closes to the opening 8212. The flip cover 8217 is rotatably connected to the base structure 821 at the edge of the opening 8212 via a pivot 8218. A buckle 82171 is provided on the flip cover 8217, and a slot 8210 is provided on the base structure 821 at the edge of the opening 8212. The buckle 82171 is engaged with the slot 8210. In this embodiment, when the latch 82171 is engaged with the slot 8210, the flip cover 8217 remains closed over the opening 8212, preventing the electronic component 83 in the cavity 8211 from easily detaching. When the latch 82171 is disengaged from the slot 8210, the flip cover 8217 can be rotated to disengage from the opening 8212, no longer obstructing the electronic component 83 in the cavity 8211, allowing the electronic component 83 to be easily removed. With this structure, maintenance personnel can manually disengage the latch 82171 from the slot 8210, releasing the flip cover from obstructing the electronic component 83, allowing the electronic component 83 to be easily removed from the cavity 8211.

[0107] In some embodiments, the protrusion 8213 is provided with a guide slope 82131, and the distance between the guide slope 82131 and the electronic component 83 in the direction of the opening 8212 gradually decreases along the protrusion direction of the protrusion 8213.

[0108] The guide ramp 82131 can be a ramp with a guiding function provided on the latch 8213. Along the protruding direction of the latch 8213, by setting the distance between the guide ramp 82131 and the electronic component 83 in the direction of the opening 8212 to gradually decrease, the orientation of the guide ramp 82131 and the orientation of the opening 8212 are set at an acute angle. This allows the electronic component 83 to pass through the latch 8213 more smoothly when it is inserted from the opening 8212. It also allows the latch 8213 to undergo better elastic deformation to provide space for the electronic component 83 to pass through.

[0109] In some embodiments, reference Figure 4 The protrusion 8213 is provided with a support surface 82132, the orientation of the support surface 82132 is opposite to the orientation of the opening 8212, and the support surface 82132 abuts against the electronic component 83.

[0110] The abutting surface 82132 can be the surface in the protrusion 8213 used to abut the electronic component 83. By abutting the electronic component 83, the electronic component 83 can be blocked in the cavity 8211 and is not easy to fall out from the opening 8212.

[0111] The orientation of the abutting surface 82132 is opposite to that of the opening 8212. This can mean that the orientation of the abutting surface 82132 is parallel to and opposite to that of the opening 8212, making the abutting surface 82132 perpendicular to the opening 8212. This allows the abutting surface 82132 to better block the electronic component 83 when it comes out of the opening 8212, effectively reducing the possibility of the electronic component 83 coming out of the opening 8212 and making the connection between the electronic component 83 and the base structure 821 reliable.

[0112] In some embodiments, reference Figure 7 The seat structure 821 is provided with a notch 8214. The notch 8214 is connected to the opening 8212. The notch 8214 extends through the seat structure 821 along the thickness direction to communicate with the cavity 8211.

[0113] The notch 8214 can be a notch structure provided on the base structure 821, which is formed by removing material from the base structure 821 at the edge of the opening 8212, so that the notch 8214 removes material from the edge of the opening 8212 in a direction away from the opening 8212, thereby making the opening of the notch 8214 connected to the opening 8212. For example, the notch 8214 can be formed by removing material from the base structure 821 at the edge of the opening 8212 by machining such as milling, or the notch 8214 can also be manufactured simultaneously with the base structure 821 using an integral molding process such as injection molding.

[0114] The notch 8214 extends through the thickness of the base structure 821 to communicate with the cavity 8211. This can mean that the notch 8214 extends through the wall of the base structure 821 along the thickness of the wall, allowing the cavity 8211 to communicate with the outside through the notch 8214. This allows maintenance personnel to hold the electronic component 83 through the notch 8214 to remove the electronic component 83 from the cavity 8211 or to install the electronic component 83 into the cavity 8211, which improves the ease of disassembling and assembling the electronic component 83.

[0115] In some embodiments, the electronic component 83 further includes a body 832 connected to the pin 831. One of the outer surface of the body 832 and the inner wall surface of the cavity 8211 is provided with a groove 8321, and the other is provided with a first protrusion 8215. The first protrusion 8215 is engaged with the groove 8321.

[0116] As described in the aforementioned technical solution, the main body 832 is the main structure of the electronic component 83. By providing a groove 8321 on one of the outer surface of the main body 832 and the inner wall surface of the cavity 8211, and providing a first protrusion 8215 on the other, and by having the first protrusion 8215 engage with the groove 8321, the electronic component 83 and the base structure 821 are engaged, thus achieving a detachable connection between the electronic component 83 and the base structure 821.

[0117] It is possible, see reference. Figure 8 and Figure 12 The outer surface of the main body 832 is provided with a groove 8321, and the inner wall of the cavity 8211 is provided with a first protrusion 8215. The first protrusion 8215 is engaged with the groove 8321, so that the electronic component 83 is engaged with the base structure 821. Alternatively, the outer surface of the main body 832 is provided with a first protrusion 8215, and the inner wall of the cavity 8211 is provided with a groove 8321. The first protrusion 8215 is engaged with the groove 8321, so that the electronic component 83 is engaged with the base structure 821.

[0118] In some embodiments, reference Figure 12 The outer surface of the first protrusion 8215 is configured as an arc-shaped surface.

[0119] By configuring the outer surface of the first protrusion 8215 as an arc-shaped surface, the first protrusion 8215 can slide smoothly into the groove 8321, achieving a smooth engagement between the first protrusion 8215 and the groove 8321; at the same time, it also allows the first protrusion 8215 to slide out of the groove 8321 under the action of external force, achieving a smooth disengagement between the first protrusion 8215 and the groove 8321, which is beneficial to improving the ease of assembly and disassembly of electronic components 83 and base structure 821.

[0120] In some embodiments, reference Figure 9 The second connecting part 8222 has a second protrusion 82221 on its surface facing the pin 831, and the second protrusion 82221 abuts against the pin 831.

[0121] The second protrusion 82221 can be a structure formed by protruding outward from the surface of the second connecting portion 8222 facing the pin 831. By providing the second protrusion 82221 on the surface of the second connecting portion 8222 facing the pin 831, the second connecting portion 8222 with the second protrusion 82221 can more tightly abut against the pin 831, which not only helps to improve the reliability of the connection between the pin 831 and the second connecting portion 8222, but also helps to optimize the conductivity of the connection between the pin 831 and the second connecting portion 8222.

[0122] In some embodiments, a conductive structure layer (not shown) is provided on the surface where the pin 831 abuts against the second protrusion 82221, and the Rockwell hardness of the conductive structure layer is lower than that of the second protrusion 82221.

[0123] The conductive structure layer can be a structure layer disposed on the surface of pin 831 facing the second protrusion 82221. It is a structure layer with good conductivity, so that pin 831 and the second connection portion 8222 can conduct electricity smoothly.

[0124] By setting the Rockwell hardness of the conductive structure layer to be lower than that of the second protrusion 82221, the second protrusion 82221 can be pressed into the conductive structure layer when it abuts against the conductive structure layer of the pin 831. This can improve the reliability of the connection between the pin 831 and the second connection portion 8222, and further improve the conductivity of the connection between the pin 831 and the second connection portion 8222.

[0125] The Rockwell hardness of the conductive structural layer and the Rockwell hardness of the second protrusion 82221 can be obtained according to the national standard GB / T230.1-2018. The specific testing method can be referred to the national standard GB / T 230.1-2018, and will not be elaborated here.

[0126] For example, the substrate material of the conductive component 822 is copper, and the substrate material of the conductive structure layer is tin.

[0127] The base material of conductive component 822 is copper, which means that copper is the material with the largest mass proportion in conductive component 822. The base material of conductive structural layer is tin, which means that tin is the material with the largest mass proportion in conductive structural layer.

[0128] In some embodiments, the surface of the second connection portion 8222 that abuts against the pin 831 is provided with a coating (not shown in the figure), and the conductivity of the coating is higher than that of the second connection portion 8222.

[0129] The coating can be a structural layer disposed on the surface of the second connection portion 8222 facing the pin 831. It is a structural layer with good conductivity, so that the pin 831 and the second connection portion 8222 can conduct electricity smoothly.

[0130] By providing a coating on the surface of the second connection portion 8222 facing the pin 831, and setting the conductivity of the coating to be higher than that of the second connection portion 8222, the coating can improve the conductivity at the connection between the second connection portion 8222 and the pin 831.

[0131] For example, the coating may be a gold-plated layer or a silver-plated layer disposed on the surface of the second connection portion 8222 facing the pin 831, which can effectively improve the conductivity at the connection between the second connection portion 8222 and the pin 831.

[0132] In some embodiments, the first connection portion 8221 is soldered to the conductive lines of the circuit board 81.

[0133] Since welding can melt and mix the material of the first connection part 8221 and the material of the conductive line together, the first connection part 8221 is welded to the conductive line of the circuit board 81, which not only makes the connection between the first connection part 8221 and the conductive line conductive, but also makes the first connection part 8221 and the conductive line firmly connected together, and the mounting base 82 can be firmly supported by the circuit board 81.

[0134] In some embodiments, the base structure 821 is an injection-molded structure, and the conductive element 822 further includes an embedding portion 8223. The first connecting portion 8221 and the second connecting portion 8222 are connected through the embedding portion 8223, which is embedded in the base structure 821.

[0135] The base structure 821 is an injection-molded structure, meaning that the base structure 821 is integrally molded using an injection molding process. The embedded part 8223 is the structural part in the conductive component 822 that connects the first connecting part 8221 and the second connecting part 8222. It is disposed in the wall of the base structure 821 and is fixed by the wall of the base structure 821.

[0136] For example, the conductive element 822 can be placed as an insert in the mold for injection molding the base structure 821. Through injection molding, the insert portion 8223 of the conductive element 822 is directly wrapped by the material of the base structure 821 and formed in the wall of the base structure 821, so that the connection between the conductive element 822 and the base structure 821 is completed at the same time as the base structure 821 is formed.

[0137] Some embodiments of this application also provide an electrical device, which includes the battery device 2 provided by the above-described technical solution, and the battery device 2 is used to provide electrical energy.

[0138] Some embodiments of this application provide a battery device 2, which includes a housing 5, a battery cell group 7, and a circuit board assembly 8. The battery cell group 7 and the circuit board assembly 8 are disposed in the housing 5. The circuit board assembly 8 is electrically connected to the battery cell group 7. The circuit board assembly 8 includes a circuit board 81, a mounting base 82, and electronic components 83. The mounting base 82 includes a base structure 821 and a conductive element 822 connected to the base structure 821. The base structure 821 forms a cavity 8211 with an opening 8212. The electronic components 83 are located in the cavity 8211. A latching protrusion 8213 is provided on the base structure 821 at the edge of the opening 8212. The latching protrusion 8213 protrudes from the inner wall of the cavity 8211 toward the cavity 8211. The latching protrusion 8213 can block the electronic components 83 in the cavity 8211 to achieve a detachable connection between the electronic components 83 and the base structure 821. The first connecting portion 8221 of the conductive component 822 is connected to the conductive line of the circuit board 81, and the second connecting portion 8222 abuts against the pin 831 of the electronic component 83.

[0139] In the above structure, the first connecting portion 8221 of the conductive element 822 in the mounting base 82 is connected to the conductive line of the circuit board 81, and the pin 831 of the electronic component 83 abuts against the second connecting portion 8222, so that the electronic component 83 can be electrically connected to the conductive line of the circuit board 81 through the conductive element 822, thus connecting the electronic component 83 into the conductive line of the circuit board 81 and realizing the installation of the electronic component 83 in the circuit board 81. Since the first connecting portion 8221 of the conductive element 822 in the mounting base 82 is connected to the conductive line of the circuit board 81 and the electronic component 83 is detachably connected to the base structure 821, the electronic component 83 can be detachably installed on the circuit board 81 through the mounting base 82. Therefore, the electronic component 83 in the circuit board assembly 8 can be easily disassembled and replaced, which not only improves the convenience of maintenance of the battery device 2, but also helps to reduce the maintenance cost of the battery device 2.

Claims

1. A battery device, characterized by, The battery device comprises: a box body; a battery cell group arranged in the box body; a circuit board assembly arranged in the box body, the circuit board assembly being electrically connected with the battery cell group, the circuit board assembly comprising a circuit board, a mounting seat and an electronic component, the mounting seat comprising a seat body structure and a conductive member connected to the seat body structure, the conductive member comprising a first connecting part and a second connecting part connected to each other, the first connecting part being connected to a conductive circuit of the circuit board, the electronic component being detachably connected to the seat body structure, the electronic component comprising a pin, the pin being abutted against the second connecting part.

2. The battery device according to claim 1, characterized by The seat body structure forms a cavity, the second connecting part is located in the cavity, and the pin is located in the cavity and abutted against the second connecting part.

3. The battery device of claim 2, wherein, The electronic component is located in the cavity, the cavity is provided with an opening, the seat body structure on the edge of the opening is provided with a limiting mechanism, and the limiting mechanism can block the electronic component in the cavity.

4. The battery device of claim 3, wherein The limiting mechanism comprises a clamping protrusion, the clamping protrusion is connected to the seat body structure and protrudes from the inner wall of the cavity towards the cavity.

5. The battery device of claim 4, wherein, The clamping protrusion is movably connected to the seat body structure, the clamping protrusion has a locking position, the limiting mechanism further comprises a locking structure, and the clamping protrusion is configured to block the electronic component in the cavity and remain in the locking position under the action of the locking structure.

6. The battery device of claim 4, wherein The clamping protrusion is provided with a guide inclined surface, the distance between the guide inclined surface and the electronic component gradually decreases in the protruding direction of the clamping protrusion.

7. The battery device of claim 4, wherein The clamping protrusion is provided with an abutting surface, the abutting surface is arranged in a direction opposite to the direction of the opening, and the abutting surface abuts against the electronic component.

8. The battery device of claim 3, wherein The seat body structure is provided with a notch groove, the notch groove is connected to the opening, and the notch groove penetrates through the seat body structure along the thickness direction of the seat body structure to communicate with the cavity.

9. The battery device of claim 2, wherein, The electronic component further comprises a main body connected with the pin, one of the outer surface of the main body and the inner wall surface of the cavity is provided with a groove, and the other is provided with a first protrusion, and the first protrusion is fitted and clamped in the groove.

10. The battery device of claim 9, wherein, The outer surface of the first protrusion is configured as an arc surface.

11. The battery device of claim 1, wherein The surface of the second connecting part facing the pin is provided with a second protrusion, and the second protrusion abuts against the pin.

12. The battery device of claim 11, wherein, The surface of the pin abutting against the second protrusion is provided with a conductive structure layer, and the Rockwell hardness of the conductive structure layer is lower than that of the second protrusion.

13. The battery device of claim 1, wherein, The surface of the second connecting part abutting against the pin is provided with a coating layer, and the electrical conductivity of the coating layer is higher than that of the second connecting part.

14. The battery device of claim 1, wherein, The first connecting part is welded to the conductive circuit of the circuit board.

15. The battery device of claim 1, wherein, The seat body structure is an injection molding structure, the conductive member further comprises an embedded part, the first connecting part and the second connecting part are connected through the embedded part, and the embedded part is embedded in the seat body structure.

16. An electrical device, comprising: The battery device comprises any one of claims 1-13, and the battery device is used for providing electric energy.

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