Battery device and electric equipment

Abstract

The embodiment of the utility model provides a battery device and electric equipment, and relates to the technical field of batteries. The battery device comprises a box body, a battery monomer and a control assembly, and the box body is provided with an accommodating cavity; the battery monomers are mounted in the accommodating cavities; the control assembly is installed in the containing cavity and comprises a supporting piece, a shell and a circuit board, the supporting piece is used for being connected with the box body, the shell is directly connected with the supporting piece, and the circuit board is installed in the shell and connected with the single batteries. The shell is directly connected with the supporting piece, so that a component for connecting the shell and the supporting piece can be omitted, the assembly structure between the shell and the supporting piece is simplified, and the assembly cost of the shell and the supporting piece is reduced.

Description

Technical Field

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

[0002] Battery devices are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] Battery devices include control components such as BMS (Battery Management System). These control components include the housing and the support components that support the housing. How to simplify the assembly structure between the housing and the support components and reduce assembly costs is an important research direction in battery technology. Utility Model Content

[0004] This application provides a battery device and an electrical appliance that simplifies the assembly structure between the housing and the support, and reduces assembly costs.

[0005] In a first aspect, embodiments of this application provide a battery device, including a housing, a battery cell, and a control component. The housing has a receiving cavity; the battery cell is installed in the receiving cavity; the control component is installed in the receiving cavity, and the control component includes a support member, a housing, and a circuit board. The support member is installed in the housing, the housing is directly connected to the support member, and the circuit board is installed in the housing and connected to the battery cell.

[0006] By adopting the above technical solution, the shell and the support are directly connected, which can eliminate the need for components used to connect the shell and the support, thereby simplifying the assembly structure between the shell and the support and reducing the assembly cost of the shell and the support.

[0007] In some embodiments of this application, the direct connection between the housing and the support member includes at least one of fusion connection, plug-in connection, adhesive connection and snap-fit ​​connection.

[0008] By adopting the above technical solution, the shell and the support are directly connected by means of fusion connection, plug-in, bonding and snap-fit. This not only makes the processing and operation convenient and improves the assembly efficiency, but also makes the shell and the support have a certain connection strength after connection.

[0009] In some embodiments of this application, the fusion connection method includes at least one of integral injection molding connection, thermofusion connection and welding.

[0010] The above technical solutions can reduce assembly steps, achieve rapid connection between the shell and the support, and have good connection strength, thus improving the stability of the shell and the support after connection.

[0011] In some embodiments of this application, the support member has opposite first and second surfaces along a first direction, the first direction being the arrangement direction from the housing to the support member, the housing including a sidewall located on the first surface and forming a receiving groove with the first surface, and the circuit board being mounted in the receiving groove.

[0012] By adopting the above technical solution, the receiving groove can be directly formed by the side wall of the shell and the first surface of the support, which can eliminate the bottom wall of the shell, thereby saving material costs and making the shell and support lighter as a whole.

[0013] In some embodiments of this application, the sidewall opposite to the receiving groove is provided with a reinforcing rib, and the reinforcing rib is connected to the support plate.

[0014] By adopting the above technical solution, reinforcing ribs are provided on the side wall to connect the support plate. The reinforcing ribs can be used to support and fix the side wall, thereby improving the structural strength and stability of the side wall.

[0015] In some embodiments of this application, the control component further includes a pad, the support member has opposite first and second surfaces along a first direction, the first direction being the arrangement direction from the housing to the support member, the housing being located on the first surface, the pad being located on the second surface and directly connected to the support member, and the pad abutting against the housing.

[0016] By adopting the above technical solution, the pad and the support are directly connected, eliminating the connecting components between the pad and the support, further simplifying the assembly structure of the control component and reducing assembly costs.

[0017] In some embodiments of this application, the pad and the support are an integral piece.

[0018] By adopting the above technical solution, the pad and the support are designed as a single unit, which not only facilitates processing but also improves the connection stability between the two.

[0019] In some embodiments of this application, the support member has a first recess on the first surface and a first protrusion on the second surface at a position corresponding to the first recess, and the pad is connected to the first protrusion.

[0020] By adopting the above technical solution, the support member is provided with a first protrusion on the second surface, and the pad is connected to the first protrusion. The first protrusion can work together with the pad to increase the installation height of the support member. Under the same installation height requirement, the setting of the first protrusion can reduce the height of the pad, thereby saving the pad material.

[0021] In some embodiments of this application, the control component further includes a connector that passes through the first recess, the first protrusion, and the pad, and is connected to the housing.

[0022] By adopting the above technical solution, the connector is located in the first recess and passes through the first protrusion and the pad, which improves the stability of the connector after installation. In addition, the first recess can provide a certain guiding effect, which not only facilitates the installation of the connector, but also allows the end of the connector to be located in the first recess, which can save space on the second surface, making the whole structure more compact and facilitating the layout of other structures on the first surface of the support.

[0023] In some embodiments of this application, the number of pads is multiple, and the multiple pads are spaced apart along the length direction of the support member, and the length direction of the support member intersects the first direction.

[0024] By adopting the above technical solution and designing multiple pads, the support stability of the support component can be improved, and the connection stability between the support component and the box can also be improved.

[0025] In some embodiments of this application, a support beam is installed inside the box, the support beam is connected to two opposite walls of the box, and the control component is installed on the support beam.

[0026] By adopting the above technical solution, the control component is installed on the support beam, and the control component is fixed and installed using the support beam, so that the control component is located above the battery cell, thereby reducing the lateral space occupied by the control component in the battery box.

[0027] In some embodiments of this application, the control component further includes a locking wire member connected to the support member.

[0028] By adopting the above technical solution, the control component is designed to also include a wire locking component. The wire locking component can fix the lines connected to the circuit board of the control component, preventing the lines from moving, loosening or falling off during use, and ensuring the stability of the electrical connection.

[0029] In some embodiments of this application, the support member has a first surface and a second surface opposite to each other along a first direction, the first direction being the arrangement direction from the housing to the support member, the housing being located on the first surface, the support member having a second recess on the second surface, and a second protrusion on the first surface at a position corresponding to the second recess, the locking wire member passing through the second protrusion and the second recess.

[0030] By adopting the above technical solution, the locking component is configured to be inserted into the second protrusion and the second recess. The second protrusion and the second recess ensure that the locking component can maintain a certain distance from the box below the support after installation, thereby reducing the possibility of short circuit or wear between the locking component and the box.

[0031] In some embodiments of this application, the second recess and the second protrusion are located at the edge of the support member.

[0032] By adopting the above technical solution, the second recess and the second protrusion are designed to be located at the edge of the support member. Compared with the method of placing the second recess and the second protrusion in the other areas of the support member, it is more convenient to form the second recess and the second protrusion and can reduce the processing difficulty.

[0033] Secondly, embodiments of this application provide an electrical device including the aforementioned battery device, which is used to provide electrical energy. Attached Figure Description

[0034] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the embodiments of this application 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 drawings without creative effort.

[0035] Figure 1 This application provides structural schematic diagrams of vehicles for some embodiments;

[0036] Figure 2 This is a partial schematic diagram of a battery device provided in some embodiments of this application;

[0037] Figure 3 This is a schematic diagram of the structure of a control component provided in some embodiments of this application from a first-view perspective;

[0038] Figure 4 for Figure 3 A schematic diagram of the control components after the circuit board has been removed.

[0039] Figure 5 A schematic diagram of the structure of the control components provided in some embodiments of this application from a second perspective;

[0040] Figure 6 A schematic diagram of the control components provided in some embodiments of this application from a third-person perspective;

[0041] Figure 7 This application provides schematic diagrams showing the connection between the control components and the support beam in some embodiments.

[0042] The reference numerals in the accompanying drawings for the specific embodiments are as follows:

[0043] 1000, vehicles;

[0044] 100. Battery device;

[0045] 10. Box body; 11. First part; 12. Second part; 13. Receiving cavity; 14. Support beam;

[0046] 20. Battery cell;

[0047] 30. Control component; 31. Support member; 311. First surface; 3111. First recess; 3112. Second protrusion; 312. Second surface; 3121. First protrusion; 3122. Second recess; 313. First connecting hole; 314. Third connecting hole; 32. Housing; 321. Side wall; 3211. Receiving groove; 3212. Reinforcing rib; 33. Circuit board; 34. Pad; 35. Connector;

[0048] 200. Controller;

[0049] 300. Motor;

[0050] X, the first direction; Y, the second direction. Detailed Implementation

[0051] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0053] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0054] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0055] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, H and / or B can represent: H existing alone, H and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0056] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0057] In this application, "multiple" means two or more (including two).

[0058] In this application, the battery cell may include a lithium-ion secondary battery cell, a lithium-ion primary battery cell, a lithium-sulfur battery cell, a sodium-lithium-ion battery cell, a sodium-ion battery cell, or a magnesium-ion battery cell, etc., and the embodiments of this application are not limited thereto. The battery cell may be cylindrical, flat, cuboid, or other shapes, etc., and the embodiments of this application are not limited thereto.

[0059] The battery mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in this application may include a battery module or a battery pack. A battery generally includes a housing for encapsulating one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0060] The battery cell mentioned in the embodiments of this application may include an electrode assembly and an electrolyte. The electrode assembly includes a positive electrode, a negative electrode, and a separator. The battery cell mainly relies on the movement of metal ions between the positive and negative electrode plates to operate. The positive electrode includes a positive current collector and a positive active material layer, with the positive active material layer coated on the surface of the positive current collector. The positive current collector includes a positive electrode coating area and a positive electrode tab connected to the positive electrode coating area. The positive electrode coating area is coated with the positive active material layer, while the positive electrode tab is not coated with the positive active material layer. Taking a lithium-ion battery cell as an example, the material of the positive current collector can be aluminum, and the positive active material layer includes positive active material, which can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode sheet includes a negative electrode current collector and a negative electrode active material layer, the negative electrode active material layer being coated on the surface of the negative electrode current collector. The negative electrode current collector includes a negative electrode coating area and a negative electrode tab connected to the negative electrode coating area. The negative electrode coating area is coated with the negative electrode active material layer, while the negative electrode tab is not coated with the negative electrode active material layer. The material of the negative electrode current collector can be copper, and the negative electrode active material layer includes negative electrode active material, which can be carbon or silicon, etc. The material of the separator can be PP (polypropylene) or PE (polyethylene), etc.

[0061] Currently, battery devices are being used more and more widely. They are not only used in energy storage systems for hydropower, thermal power, wind power, and solar power plants, but also extensively in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. As the application areas of battery devices continue to expand, the market demand is also constantly increasing.

[0062] A battery pack typically includes a housing and battery cells and control components located within it. The housing withstands external impacts and pressures, protecting the internal battery cells and control components from physical damage and reducing the risk of damage from collisions or drops. The control components connect to the battery cells and can be structures such as a BMS (Battery Management System) or CSC (Battery Cell Monitoring Circuit), which includes an electrical housing and a circuit board mounted inside the housing.

[0063] During installation, the control component requires its housing to be mounted on a support (sheet metal bracket). The installation method involves connecting the housing and the support with multiple bolts and other connecting components. Then, the support is mounted on the battery box with multiple bolts and other connecting components. The number of connecting components is large, the assembly structure is complex, the assembly efficiency is low, and the cost is high.

[0064] Therefore, how to reduce the complexity and cost of the assembly structure of control components is an important issue in the research and development of battery cells and their related components.

[0065] In view of this, this application provides a technical solution that omits the connecting component between the shell and the support and directly connects the shell and the support to solve the above-mentioned technical problem.

[0066] The battery cells described in the embodiments of this application are applicable to batteries and electrical devices that use batteries.

[0067] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. 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. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0068] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0069] Combined with appendix Figure 1 As shown, vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, the battery device 100 can serve as the operating power source for vehicle 1000. 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 vehicle 1000 during starting, navigation, and driving.

[0070] 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.

[0071] Combined with appendix Figure 2 and 3As shown, this application provides a battery device 100, including a housing 10, a battery cell 20, and a control component 30. The housing 10 has a receiving cavity 13; the battery cell 20 is installed in the receiving cavity 13; the control component 30 is installed in the receiving cavity 13, and the control component 30 includes a support member 31, a housing 32, and a circuit board 33. The support member 31 is located inside the housing 10, the housing 32 is directly connected to the support member 31, and the circuit board 33 is installed inside the housing 32 and connected to the battery cell 20.

[0072] The housing 10 can adopt various structures. In some embodiments, the housing 10 may include a first part 11 and a second part 12, which overlap each other, and together define a receiving cavity 13 for accommodating the battery cell 20. Both the first part 11 and the second part 12 can be hollow structures with one open end, with the second part 12 covering the open side of the first part 11, so that the first part 11 and the second part 12 together define the receiving cavity 13; alternatively, the second part 12 can be a plate-like structure, and the first part 11 can be a hollow structure with one open side, with the open side of the second part 12 covering the open side of the first part 11. Of course, the housing 10 formed by the first part 11 and the second part 12 can be of various shapes, such as a cylinder, a cuboid, etc.

[0073] 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.

[0074] There can be multiple battery cells 20, which can be connected in series, parallel, or in a mixed configuration. A mixed configuration means that multiple battery cells 20 are connected in both series and parallel configurations. Multiple battery cells 20 can be directly connected in series, parallel, or in a mixed configuration, and then the entire assembly of the multiple battery cells 20 is housed within the housing 10. Alternatively, multiple battery cells 20 can first be connected in series, parallel, or in a mixed configuration to form a battery module, and then multiple battery modules can be connected in series, parallel, or in a mixed configuration to form a whole, which is then housed within the housing 10. The battery device 100 may also include other structures; for example, the battery device 100 may also include a busbar (not shown in the figure) for realizing the electrical connection between the multiple battery cells 20.

[0075] The control component 30 may include a battery management system (BMS) or a battery monitoring circuit (CSC). When the control component 30 includes a battery piping system, it can be directly connected to each battery cell 20 and monitor the voltage, temperature, and other status information of each battery cell 20 to ensure effective battery management. Data analysis can optimize the charging process, extend battery life, and prevent potential hazards such as overcharging, over-discharging, short circuits, and overheating. Furthermore, the control component 30 may also have a balancing function to balance the charge of each battery cell, preventing overall performance degradation due to imbalances between cells.

[0076] The control component 30 includes a support member 31, a housing 32, and a circuit board 33. The circuit board 33 is installed inside the housing 32, and a control module (not shown in the figure) can be installed on the circuit board 33 to realize the control function. In addition, in some embodiments, the control component 30 also includes a cover (not shown in the figure) that is shaped like a cover on the housing 32 and forms a cavity with the housing. The rest of the housing 32, except for the cover, is directly connected to the support member 31, and the cover is not directly connected to the support member 31.

[0077] The support member 31 can be a plate-shaped member as shown in the figure, which is used to support and fix the housing 32 and to be installed inside the box 10. The connection between the support member 31 and the box 10 can be achieved by the pad 34 described below.

[0078] It is understood that "direct connection" means that the housing 32 and the support 31 are not connected by any independent connecting components, but are connected or fused through their own structural connections. Unlike related technologies that use bolts or other connecting components, this embodiment directly connects the housing 32 and the support 31, which can eliminate the need for components used to connect the housing 32 and the support 31, thereby simplifying the assembly structure between the housing 32 and the support 31 and reducing the assembly cost of the housing 32 and the support 31.

[0079] In some examples, optionally, in some embodiments of this application, the housing 32 is directly connected to the support 31 by at least one of fusion connection, plug-in, adhesive and snap-fit.

[0080] "Fusion connection" refers to combining two different components into a whole through specific technologies or methods (such as injection molding, hot melting, and welding as described below) to achieve better structural performance and sealing. When fusion connection is used to connect the housing 32 and the support 31, the part of the housing 32 except for the cover body is fused to the support 31, and the cover body is installed after the connection is completed.

[0081] The insertion refers to the construction of one of the housing 32 and the support member 31 having a socket and the other having a insertion part (this embodiment is not shown in the figure). The insertion part is inserted into the socket. The size of the insertion part and the size of the socket can be equal or different. For example, when the size of the insertion part is larger than the size of the socket, the two can be interference-fitted. When the size of the insertion part is smaller than the size of the socket, the two can be further sealed by potting glue.

[0082] Adhesion refers to bonding one surface of the housing 32 and one surface of the support 31 with glue (this embodiment is not shown in the figure).

[0083] The snap-fit ​​refers to the fact that one of the housing 32 and the support member 31 is constructed to have a slot, and the other is constructed to have a buckle, with the buckle and the slot snapping together (this embodiment is not shown in the figure).

[0084] The above-mentioned methods of fusion connection, plug-in, adhesive and snap-fit ​​are used to achieve direct connection between the shell 32 and the support 31. This not only makes the processing and operation convenient and improves the assembly efficiency, but also ensures that the shell 32 and the support 31 have a certain connection strength after being connected.

[0085] In some examples, the fusion connection may optionally include at least one of integral injection molding connection, thermofusion connection and welding.

[0086] Compared to plug-in, snap-fit, and adhesive methods, the fused connection of the housing 32 and the support 31 results in better overall structural strength and stability.

[0087] Integrated injection molding refers to a technique in which the support member 31 and the shell 32 are manufactured as a single integral component during the injection molding process. This method typically utilizes thermoplastic materials, where the molten plastic is injected into a mold using an injection molding machine, and the mold cools and solidifies to form an integrated component. Therefore, unlike metal supports in related technologies, the support member 31 in this embodiment can be made of plastic. Correspondingly, the shell 32 can also be made of polymeric materials such as plastic.

[0088] Thermofusion bonding utilizes heat to melt the contact surfaces of the housing 32 and the support 31, thereby achieving a strong bond between them. The principle is that when a heat source is applied to the housing 32 and the support 31, the materials of both reach their melting points, changing from a solid state to a fluid state. In this fluid state, the contact surfaces of the support 31 and the housing 32 are pressed together. After the materials cool and solidify, a strong bond is formed. Thermofusion bonding, along with the aforementioned integral injection molding connection, provides higher tensile strength and impact resistance than mechanical connection methods such as bolted connections, plug-in connections, and snap-fit ​​connections.

[0089] Welding involves locally melting the materials of the support 31 and the shell 32 at high temperatures and achieving a bond under pressure. Welding can improve the overall strength and durability of the support 31 and the shell 32. Welding can be applied to metal materials. In this case, the support 31 and the shell 32 can be made of metal materials in addition to plastic parts.

[0090] The above-mentioned one-piece injection molding connection, hot melt connection and welding are used to achieve the direct connection between the shell 32 and the support 31. All of these methods can reduce the assembly steps, realize the quick connection between the shell 32 and the support 31, and have good connection strength, thus improving the stability of the shell 32 and the support 31 after connection.

[0091] Combined with appendix Figure 4-6 As shown, in some examples, optionally, the support member 31 has opposite first surfaces 311 and second surfaces 312 along the first direction X, the first direction X being the arrangement direction of the housing 32 to the support member 31, the housing 32 including sidewalls 321, the sidewalls 321 being located on the first surface 311 and forming a receiving groove 3211 with the first surface 311, the circuit board 33 being mounted in the receiving groove 3211.

[0092] The support member 31 can be a plate or a block. In this embodiment, a plate with a smaller thickness is used. The first surface 311 and the second surface 312 are arranged oppositely along the thickness direction of the support member 31. This thickness direction is also the arrangement direction of the housing 32 to the support member 31 (first direction X).

[0093] In some embodiments, the housing 32 may further include a side wall 321 and a top cover (not shown in the figure) connected to the side wall 321 away from the support member 31. The side wall 321 is connected to the first surface 311 of the support member 31 by the above-described fusion connection method, and forms a receiving groove 3211 with the first surface 311. The shape of the receiving groove 3211 may be a rectangular groove as shown in the figure, or it may be a circular groove, a triangular groove or other shapes. This embodiment will not list them one by one.

[0094] In related technologies, the housing 32 generally includes a top cover, side walls 321, and a bottom wall. The side walls 321 and the bottom wall form a groove for accommodating the circuit board 33. Therefore, during assembly, the circuit board 33 is first installed inside the housing 32. In this embodiment, the side walls 321 and the support member 31 directly form the receiving groove 3211, which can omit the original bottom wall structure of the housing 32. Alternatively, the circuit board 33 can be installed inside the receiving groove 3211 after the support member 31 is connected to the housing 32 and the receiving groove 3211 is formed.

[0095] The structure described in this embodiment omits the bottom wall of the shell 32, which can save material costs and make the shell 32 and the support member 31 lighter overall.

[0096] Combined with appendix Figure 4 and attached Figure 5 As shown, in some examples, optionally, the sidewall 321 is provided with a reinforcing rib 3212 on the side opposite to the receiving groove 3211, and the reinforcing rib 3212 is connected to the support plate.

[0097] The reinforcing rib 3212 can be integrally formed with the side wall 321 and the support member 31, or connected between the side wall 321 and the support member 31 by means of hot melt connection and welding.

[0098] A reinforcing rib 3212 is provided on the side wall 321 to connect the support plate. The reinforcing rib 3212 can be used to support and fix the side wall 321, thereby improving the structural strength and stability of the side wall 321.

[0099] The shape of the side wall 321 can be a triangle as shown in the figure, or other shapes, as long as they can provide support and fixation for the side wall 321.

[0100] The number of reinforcing ribs 3212 can be multiple. Multiple reinforcing ribs 3212 are arranged at intervals along the circumference of the side wall 321. Taking the side wall 321 in the figure as a rectangle as an example, the side wall 321 includes multiple sub-walls. Multiple reinforcing ribs 3212 on each sub-wall can be arranged at even intervals, thereby providing uniform and stable support for the side wall 321.

[0101] Combined with appendix Figure 6 As shown, in some examples, the control assembly 30 may optionally include a pad 34, and the support 31 having opposite first surfaces 311 and second surfaces 312 along a first direction X, the first direction X being the arrangement direction of the housing 32 to the support 31, the housing 32 being located on the first surface 311, the pad 34 being located on the second surface 312 and being directly connected to the support 31, the pad 34 abutting against the housing 10.

[0102] In related technologies, the pad 34 is generally connected to the support 31 by bolts or other connecting components. This undoubtedly makes the assembly structure and process of the control component 30 more complicated and more costly. Therefore, in this embodiment, the support 31 is directly connected to the pad 34, which can omit bolts and other connecting components, further reduce the complexity of the assembly structure, improve assembly efficiency, and reduce assembly costs.

[0103] Direct connection methods include the above-mentioned fusion connection, plug-in, adhesive and snap-fit. Fusion connection can specifically be integral injection molding connection, hot melt connection and welding, etc. Since the above connection methods have been explained above, they will not be repeated here.

[0104] The pad 34 allows the housing 32 and the support 31 to have a certain installation height after being installed in the enclosure 10. This not only improves the installation stability of the support 31 and reduces the assembly difficulty, but also provides some moisture and corrosion protection. Furthermore, it allows for thermal expansion of the enclosure 10 and the support 31, reducing the possibility of mutual interference when they deform. In addition, the pad 34 can absorb vibrations inside the enclosure 10 and protect the control components 30.

[0105] In some examples, the pad 34 and the support 31 are optionally integrated.

[0106] The fact that the pad 34 and the support 31 are an integral part means that the pad 34 and the support 31 can be integrally injection molded, or welded, hot melt connected, etc. to form an integral structure, which further improves the connection stability of the two.

[0107] Combined again with the appendix Figure 6 As shown, in some examples, optionally, the support member 31 has a first recess 3111 on the first surface 311 and a first protrusion 3121 on the second surface 312 at a position corresponding to the first recess 3111, and the pad 34 is connected to the first protrusion 3121.

[0108] The first recess 3111 and the first protrusion 3121 can be directly formed by stamping or injection molding. The first recess 3111 and the first protrusion 3121 are arranged oppositely in the first direction X, which is the arrangement direction from the housing 32 to the support 31.

[0109] Since the first protrusion 3121 has a certain height on the second surface 312, after the pad 34 is connected to the first protrusion 3121, the first protrusion 3121 can work together with the pad 34 to increase the installation height of the support 31. Under the same installation height requirement, the setting of the first protrusion 3121 can reduce the height of the pad 34, thereby saving the consumable material of the pad 34.

[0110] In some examples, the control assembly 30 may optionally include a connector 35 that passes through the first recess 3111, the first protrusion 3121 and the pad 34 and is connected to the housing 10.

[0111] Unlike related technologies that open holes in the support member 31 and connect the housing 10 with bolts or other connecting components at the openings, this embodiment directly opens a first connecting hole 313 on the first surface 311. The first connecting hole 313 passes through the first recess 3111 and the first protrusion 3121. A second connecting hole (not shown in the figure) is opened on the pad 34. The connector 35 passes through the first connecting hole 313 and the second connecting hole to connect with the housing 10. The connector 35 can be a bolt, rivet, or other connecting component.

[0112] The connector 35 is positioned within the first recess 3111, passing through the first protrusion 3121 and the pad 34, thereby improving the stability of the connector 35 after installation.

[0113] In addition, the first recess 3111 can provide a certain guiding function, which facilitates the installation of the connector 35. Moreover, compared with the method of opening holes in other positions of the support member 31, the first connecting hole 313 is opened in the recess, so that the end of the connector 35 can be located in the first recess 3111, which can save space on the second surface 312, making the structure of the entire support member 31 more compact and facilitating the layout of other structures on the first surface 311 of the support member 31.

[0114] In some examples, optionally, there are multiple pads 34, which are spaced apart along the length direction of the support 31, and the length direction of the support 31 intersects at a first direction X.

[0115] The length direction of the support member 31 can be set along the second direction Y in the figure. The second direction Y intersects with the aforementioned first direction X. In some embodiments, the second direction Y can be perpendicular to the first direction X.

[0116] By designing multiple pads 34, the support stability of the support member 31 can be improved, and the connection stability between the support member 31 and the housing 10 can also be improved.

[0117] Combined with appendix Figure 7 As shown, in some examples, optionally, a support beam 14 is installed inside the housing 10, the support beam 14 is connected to two opposite walls of the housing 10, and the control assembly 30 is mounted on the support beam 14 and located above the battery cell 20.

[0118] The support beam 14 is connected to the two opposite walls of the box body 10 to improve the overall structural strength of the box body 10. The number of support beams 14 can be one or more, and the support beams 14 can be arranged in a crisscross pattern to divide the box body 10 into a grid structure, forming multiple cavities for accommodating the battery cells 20.

[0119] The control component 30 is mounted on the support beam 14, and the support beam 14 is used to fix and install the control component 30, so that the control component 30 is located above the battery cell 20, thereby reducing the lateral space occupied by the control component 30 in the housing 10.

[0120] In some examples, the control component 30 may optionally include a wire locking element (not shown) connected to the support 31.

[0121] The locking device may include a bolt and a nut, with the bolt mounted on the support 31 and the nut used to engage with the first surface 311 of the support 31 to lock the connecting wire.

[0122] The connecting wire can be a line used to connect circuit board 33, and the line can also be used to connect electrical equipment or structures such as high voltage boxes.

[0123] The control component 30 is designed to also include a wire locking device, which can be used to fix the wires connected to the circuit board 33 of the control component 30, preventing the wires from moving, loosening or falling off during use, and ensuring the stability of the electrical connection.

[0124] Combined again with the appendix Figure 4 and attached Figure 5 As shown, in some examples, optionally, the support member 31 has a first surface 311 and a second surface 312 opposite along the first direction X, the first direction X being the arrangement direction from the housing 32 to the support member 31, the housing 32 being located on the first surface 311, the support member 31 having a second recess 3122 on the second surface 312, and a second protrusion 3112 being provided on the first surface 311 at a position corresponding to the second recess 3122, the locking wire passing through the second protrusion 3112 and the second recess 3122.

[0125] The second recess 3122 and the second protrusion 3112 are opposite in direction to the first recess 3111 and the first protrusion 3121 mentioned above. The second recess 3122 is formed on the second surface 312 and the protrusion is formed on the first surface 311.

[0126] The support member 31 is provided with a third connecting hole 314 that penetrates the second recess 3122 and the second protrusion 3112, and the aforementioned locking wire is directly installed in the third connecting hole 314.

[0127] The locking wire is designed to pass through the second protrusion 3112 and the second recess 3122. By utilizing the second protrusion 3112 and the second recess 3122, the locking wire can maintain a certain distance from the housing 10 below the support member 31 after installation, reducing the possibility of short circuit or wear between the locking wire and the housing 10.

[0128] In some examples, the second recess 3122 and the second protrusion 3112 are optionally located at the edge of the support 31.

[0129] Taking the support member 31 as an example of a plate-shaped member that is approximately rectangular, the edge of the support member 31 is one side of the plate-shaped member, and the second recess 3122 and the second protrusion 3112 in this embodiment are disposed on this side. The shape of the second recess 3122 and the second protrusion 3112 can be approximately a semicircle or other similar shapes.

[0130] Designing the second recess 3122 and the second protrusion 3112 to be located at the edge of the support member 31 makes it easier to form the second recess 3122 and the second protrusion 3112 compared to placing the second recess 3122 and the second protrusion 3112 in the rest of the support member 31, thus reducing the processing difficulty.

[0131] Finally, please see the appendix. Figure 2-6As shown in the illustration, this application provides a battery device 100, including a housing 10, a battery cell 20, and a control assembly 30. The housing 10 has a receiving cavity 13; the battery cell 20 is installed in the receiving cavity 13; the control assembly 30 is installed in the receiving cavity 13, and the control assembly 30 includes a support member 31, a housing 32, and a circuit board 33. The support member 31 is located inside the housing 10, the housing 32 is directly connected to the support member 31, and the circuit board 33 is installed inside the housing 32 and connected to the battery cell 20. The direct connection between the housing 32 and the support member 31 includes at least one of fusion connection, plug-in, adhesive, and snap-fit. The fusion connection includes at least one of integral injection molding connection, thermoforming connection, and welding. The support member 31 has opposite first surfaces 311 and second surfaces 312 along a first direction X, which is the arrangement direction from the housing 32 to the support member 31. The housing 32 includes a sidewall 321 located on the first surface 311 and forming a receiving groove 3211 with the first surface 311. The circuit board 33 is installed in the receiving groove 3211. A reinforcing rib 3212 is provided on the side of the sidewall 321 facing away from the receiving groove 3211, and the reinforcing rib 3212 is connected to the support plate. The control assembly 30 also includes a pad 34. The support member 31 has opposite first surfaces 311 and second surfaces 312 along the first direction X, which is the arrangement direction from the housing 32 to the support member 31. The housing 32 is located on the first surface 311, and the pad 34 is located on the second surface 312 and is directly connected to the support member 31. The pad 34 abuts against the housing 10. The pad 34 and the support member 31 are an integral part. The support member 31 has a first recess 3111 on its first surface 311 and a first protrusion 3121 on its second surface 312 at a position corresponding to the first recess 3111. A pad 34 is connected to the first protrusion 3121. The control assembly 30 also includes a connector 35, which passes through the first recess 3111, the first protrusion 3121, and the pad 34, and is connected to the housing 10. Multiple pads 34 are spaced apart along the length of the support member 31, and the length of the support member 31 intersects at a first direction X. A support beam 14 is installed inside the housing 10, connecting to two opposite walls of the housing 10. The control assembly 30 is mounted on the support beam 14 and located above the battery cell 20. The control assembly 30 also includes a wire locking component connected to the support member 31. The support member 31 has a first surface 311 and a second surface 312 opposite to each other along a first direction X, where the first direction X is the arrangement direction from the housing 32 to the support member 31. The housing 32 is located on the first surface 311. The support member 31 has a second recess 3122 on the second surface 312 and a second protrusion 3112 at a position corresponding to the second recess 3122 on the first surface 311. The locking wire passes through the second protrusion 3112 and the second recess 3122. The second recess 3122 and the second protrusion 3112 are located at the edge of the support member 31.

[0132] Based on the battery device 100 described above, this application embodiment also provides an electrical device, including the battery device 100 described above. The battery device 100 is used to provide electrical energy to the electrical device, which may be a vehicle 1000.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for the intermediate technical features. However, these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A battery device, characterized in that, include: The box body has a receiving cavity; The battery cell is installed inside the receiving cavity; as well as A control component is installed within the receiving cavity. The control component includes a support member, a housing, and a circuit board. The support member is installed within the housing, the housing is directly connected to the support member, and the circuit board is installed within the housing and connected to the battery cell.

2. The battery device according to claim 1, characterized in that, The direct connection between the housing and the support member includes at least one of the following: fusion connection, plug-in connection, adhesive connection, and snap-fit ​​connection.

3. The battery device according to claim 2, characterized in that, The fusion connection method includes at least one of integral injection molding connection, hot melt connection and welding.

4. The battery device according to claim 1, characterized in that, The support member has a first surface and a second surface opposite to each other along a first direction, the first direction being the arrangement direction of the housing to the support member, the housing including a sidewall located on the first surface and forming a receiving groove with the first surface, the circuit board being mounted in the receiving groove.

5. The battery device according to claim 4, characterized in that, The sidewall opposite to the receiving groove is provided with a reinforcing rib, and the reinforcing rib is connected to the support member.

6. The battery device according to any one of claims 1-5, characterized in that, The control assembly further includes a pad, and the support member has opposite first and second surfaces along a first direction, the first direction being the arrangement direction from the housing to the support member, the housing being located on the first surface, the pad being located on the second surface and directly connected to the support member, and the pad abutting against the housing.

7. The battery device according to claim 6, characterized in that, The pad and the support are a single unit.

8. The battery device according to claim 6, characterized in that, The support member has a first recess on the first surface and a first protrusion on the second surface at a position corresponding to the first recess, and the pad is connected to the first protrusion.

9. The battery device according to claim 8, characterized in that, The control component also includes a connector that passes through the first recess, the first protrusion, and the pad, and is connected to the housing.

10. The battery device according to claim 6, characterized in that, The number of pads is multiple, and the multiple pads are spaced apart along the length direction of the support member, and the length direction of the support member intersects the first direction.

11. The battery device according to any one of claims 1-5, characterized in that, A support beam is installed inside the housing, and the support beam is connected to two opposite walls of the housing. The control component is installed on the support beam and located above the battery cell.

12. The battery device according to any one of claims 1-5, characterized in that, The control component also includes a wire locking device connected to the support member.

13. The battery device according to claim 12, characterized in that, The support member has a first surface and a second surface opposite to each other along a first direction, the first direction being the arrangement direction from the housing to the support member, the housing being located on the first surface, the support member having a second recess on the second surface and a second protrusion at a position on the first surface corresponding to the second recess, and the locking wire passing through the second protrusion and the second recess.

14. The battery device according to claim 13, characterized in that, The second recess and the second protrusion are located at the edge of the support.

15. An electrical appliance, characterized in that, Includes the battery device as described in any one of claims 1-14, the battery device being used to provide electrical energy.

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