Battery device and electric appliance

Abstract

This application discloses a battery device and electrical equipment, relating to the field of batteries. The battery device includes a cover, a tray, individual battery cells, and a high-voltage box. The tray and cover are fitted together to form a receiving space; the individual battery cells are housed within the receiving space; the high-voltage box includes a hollow box body with a maintenance opening, and the box body is used to house electrical components; wherein the box body and the cover or tray are integrally formed. This battery device can improve the convenience of installation and maintenance of the electrical components in the high-voltage box.

Description

Technical Field

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

[0002] Battery devices are increasingly used in fields such as new energy vehicles and energy storage systems. In existing battery devices, the high-voltage box is usually fully sealed, which makes it difficult to operate the electrical components inside the high-voltage box and fails to meet the requirements of efficient operation and maintenance and reliability of battery devices in new energy vehicles and energy storage systems. Utility Model Content

[0003] This application provides a battery device and electrical equipment that can improve the ease of installation and maintenance of high-voltage box electrical components.

[0004] In a first aspect, this application provides a battery device, including a cover; a tray, which covers the cover to form a receiving space; a battery cell, which is received in the receiving space; and a high-voltage box, which includes a hollow box body with a maintenance port, and is used to receive electrical components; wherein the box body and the cover or tray are integrally formed.

[0005] In the technical solution of this application embodiment, the box body and the cover or tray are integrally molded, reducing the assembly steps between the high-voltage box and the cover or tray, lowering the assembly difficulty and time cost, and improving production efficiency. The high-voltage box body has a maintenance port, allowing direct assembly or maintenance of electrical components, improving the convenience of electrical component installation and maintenance. The integral molded structure reduces the number of parts and production processes, correspondingly reducing the cost of parts procurement and the labor and material costs in the processing, which helps to improve the product's market competitiveness. The integral molded structure avoids gaps between components, improving the sealing of the battery device and enhancing its safety and reliability.

[0006] In some embodiments of the first aspect, the box and the tray are integrally formed, the high-voltage box is located outside the receiving space, and the high-voltage box and the receiving space are located on the same side of the tray.

[0007] In this embodiment, the high-voltage box is positioned externally and on the same side as the receiving space, making efficient use of the space perpendicular to the tray and avoiding unnecessary space redundancy. Maintenance personnel can directly inspect and maintain the high-voltage box without disassembling individual battery cells, shortening maintenance time, reducing maintenance costs, and improving the maintainability of the battery device. The layout of the high-voltage box externally and on the same side as the receiving space increases the energy storage capacity of the battery device's receiving space. The integrated structure of the box and tray eliminates gaps between components, improving overall structural strength and sealing performance, effectively preventing the intrusion of external moisture, dust, and other impurities, and protecting the normal operation of the battery cells and high-voltage electrical components.

[0008] In some embodiments of the first aspect, the box body includes a first box wall, a second box wall, a third box wall, and a fourth box wall. The first box wall is disposed opposite to the cover. The second box wall is located on the side of the first box wall away from the cover and is disposed opposite to the first box wall. The third box wall is disposed opposite to the tray. The fourth box wall is perpendicular to the first box wall and perpendicular to the third box wall. The maintenance port is disposed on the second box wall; or the maintenance port is disposed on the third box wall; or the maintenance port is disposed on the fourth box wall.

[0009] In this embodiment, the maintenance port can be located on the second, third, or fourth wall of the enclosure, allowing the battery device to adapt to different installation spaces and usage scenarios, meeting diverse application needs and expanding its applicability. Selecting the appropriate opening location based on actual operational requirements significantly improves the ease of installation, wiring, and maintenance of high-voltage electrical components, reduces maintenance time and labor costs, and enhances the maintainability of the battery device.

[0010] In some embodiments of the first aspect, the battery device further includes an electrical connector, which includes a first connector, a second connector, and a connecting portion connecting the first connector and the second connector, wherein the first connector is disposed inside the high-voltage box and exposed outside the tray; the second connector is disposed inside the receiving space and exposed outside the tray; and the connecting portion is disposed inside the tray and integrally formed with the tray.

[0011] In this embodiment, the connecting part of the electrical connector is integrally formed with the tray, reducing cable installation and fixing processes, lowering the complexity of the manufacturing process, improving production efficiency, avoiding the sealing hazards caused by external cable penetration holes, and enhancing the safety and reliability of the battery device. Eliminating the need for external cables reduces the space occupied by cables inside the battery device, providing more installation space for individual battery cells and increasing the energy storage capacity of the battery device. The first connector, second connector, and connecting part of the electrical connector form an integrated conductive structure, reducing contact resistance and the risk of loose connections, enabling a stable electrical connection between the battery cells and high-voltage electrical components, and improving the electrical performance of the battery device.

[0012] In some embodiments of the first aspect, the battery device further includes a reinforcement disposed inside the tray and integrally formed with the tray.

[0013] In this embodiment, the reinforcing member acts as a reinforcing rib inside the tray, dispersing the pressure exerted on the tray by components such as battery cells and high-voltage boxes, reducing the possibility of localized deformation or dents in the tray. When the battery device is subjected to external forces such as vibration or impact, the reinforcing member can absorb and buffer energy, reducing the impact of external forces on battery cells and electrical components, enabling the battery device to operate normally. The one-piece molding design avoids the installation process of additional support components, simplifies the production process, and reduces the quality risks caused by loose component connections.

[0014] In some embodiments of the first aspect, the box body and the cover body are integrally formed, and the high-pressure box is located outside the accommodating space.

[0015] In this embodiment, the design of the box and cover being integrally formed and the high-voltage box being externally mounted simplifies the structure of the battery device, reduces the number of connection links between components, and provides more space for the layout of individual battery cells, thereby improving the energy storage capacity of the battery device. The integrally formed structure eliminates the gap between the box and cover, effectively blocking external moisture, dust, and other impurities, protecting the high-voltage electrical components and individual battery cells. The integrally formed structure reduces the number of parts and assembly steps, lowers assembly errors and costs during production, and improves production efficiency.

[0016] In some embodiments of the first aspect, the cover includes a cover plate and a surrounding wall disposed around the cover plate, with the box body disposed on the surrounding wall.

[0017] In this embodiment, the housing is located on the side of the cover. This position concentrates maintenance operations on the electrical components inside the high-voltage box on one side of the battery pack. During maintenance, the high-voltage electrical components can be directly accessed from the side, improving operational convenience. Simultaneously, this location utilizes the space of the battery pack perpendicular to the tray, improving the vertical space utilization of the battery pack.

[0018] In some embodiments of the first aspect, the maintenance port is located on the box wall opposite to the enclosure wall.

[0019] In this embodiment, the box wall where the maintenance port is located is arranged opposite to the surrounding wall, and the box body is connected to the surrounding wall the most, which improves the stability of the connection between the box body and the surrounding wall, enhances the overall structural strength of the battery device, and enables the device to better maintain structural integrity and protect internal components from damage when subjected to external forces such as vibration and impact.

[0020] In some embodiments of the first aspect, the high-voltage box further includes a maintenance cover that covers the maintenance port and is detachably connected to the box body.

[0021] In this embodiment, the maintenance cover simplifies the inspection and replacement of electrical components inside the high-voltage box, shortens maintenance time, improves maintenance efficiency, and reduces maintenance costs. Through sealing structures such as sealing strips and sealing rings, the sealing performance of the high-voltage box is improved when the maintenance cover is closed, preventing the intrusion of external impurities, maintaining a stable operating environment for the high-voltage electrical components, and enhancing the safety and reliability of the battery device.

[0022] In some embodiments of the first aspect, the cover, tray, and high-voltage box are made of insulating materials.

[0023] In this embodiment, the cover, tray, and high-voltage box are all made of insulating materials, which can prevent electrical faults such as current leakage and short circuits, reduce the risk of electric shock to operators, and improve the safety of the battery device during use. The one-piece molded insulating structure reduces weak points in the insulation, enabling the battery device to maintain stable insulation performance under different environmental conditions and extending the service life of the battery device.

[0024] In some embodiments of the first aspect, the cover is sealed to the tray.

[0025] In this embodiment, the connection between the cover and the tray can be achieved through various sealing methods such as adhesive bonding, heat fusion, or connectors. These methods prevent moisture, dust, and other impurities from entering the battery device, providing a good protective environment for the battery cells and electrical components, and improving the safety and reliability of the battery device. Adhesive bonding and heat fusion methods can improve assembly efficiency and reduce labor costs in large-scale production; connector connections facilitate maintenance and reduce repair costs. The selection and combination of different connection methods help to optimize the cost control of the battery device. Multiple connection methods can be selected according to different usage scenarios, material characteristics, and production needs of the battery device, and can also be combined to meet diverse design requirements.

[0026] In some embodiments of the first aspect, the material of the electrical connector includes copper or aluminum.

[0027] In this embodiment, copper or aluminum materials are selected according to different application scenarios, which can specifically meet the battery device's requirements for conductivity, lightweight, cost control, etc., so that the battery device can operate efficiently and stably under various working conditions.

[0028] Secondly, this application provides an electrical device, including the battery device of the first aspect, the battery device being used to provide electrical energy.

[0029] In some embodiments, the electrical equipment is a vehicle, a ship, or a spacecraft. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the vehicle structure according to an embodiment of this application;

[0031] Figure 2 This is a structural diagram of a battery cell according to an embodiment of this application;

[0032] Figure 3 This is an exploded view of a single battery cell according to an embodiment of this application;

[0033] Figure 4 This is a structural diagram of the battery device according to an embodiment of this application;

[0034] Figure 5 This is a partial front view of the battery device according to an embodiment of this application;

[0035] Figure 6 This is another partial front view of the battery device according to an embodiment of this application;

[0036] Figure 7 This is another partial front view of the battery device according to an embodiment of this application;

[0037] Figure 8 This is another partial front view of the battery device according to an embodiment of this application;

[0038] Figure 9 This is another structural diagram of the battery device according to an embodiment of this application.

[0039] The accompanying drawings are not drawn to scale.

[0040] Figure label:

[0041] 1000 - Vehicle; 100 - Battery assembly; 10 - Cover; 101 - Enclosure; 20 - Battery cell; 21 - Shell; 211 - Opening; 22 - End cap; 23 - Electrode terminal; 24 - Pressure relief mechanism; 25 - Electrode assembly; 251 - Tab; 30 - Tray; 301 - Receiving space; 40 - High voltage box; 401 - Maintenance port; 402 - First box wall; 403 - Second box wall; 404 - Third box wall; 405 - Maintenance cover; 406 - Box body; 50 - Electrical connector; 501 - First connector; 502 - Second connector; 503 - Connection part; 200 - Motor; 300 - Controller. Detailed Implementation

[0042] The technical solutions in the embodiments of this application will now be described with reference to the accompanying drawings.

[0043] 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.

[0044] 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.

[0045] In this application, the reference to "embodiment" means that a specific feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a mutually exclusive, independent, or alternative embodiment. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described in this application can be combined with other embodiments.

[0046] 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.

[0047] 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, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0048] 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.

[0049] In this application, "multiple" refers to two or more (including two), and similarly, "multiple groups" refers to two or more (including two), and "multiple pieces" refers to two or more (including two).

[0050] Unless otherwise specified, all embodiments and optional embodiments of this application can be combined to form new technical solutions.

[0051] Unless otherwise specified, all technical features and optional technical features of this application may be combined to form new technical solutions.

[0052] In this embodiment of the application, the battery cell can be a secondary battery, which refers to a battery cell that can be recharged to activate the active materials and continue to be used after the battery cell has been discharged.

[0053] The battery cell can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0054] The battery device 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, which are connected in series, parallel, or mixed connections via a busbar.

[0055] In some embodiments, a battery cell assembly is typically formed by arranging multiple battery cells.

[0056] 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.

[0057] In some embodiments, the battery device may be a battery pack, which includes a battery housing and one or more individual battery cells housed within the battery housing.

[0058] As an example, a battery cell assembly can be a battery module, which can be housed in a battery housing by fixing the battery module in the battery housing.

[0059] As an example, battery cell assemblies can also be housed in a battery housing by directly fixing multiple battery cells to the battery housing.

[0060] In some embodiments, the battery housing may be part of the vehicle's chassis structure. For example, a portion of the battery housing may be at least a part of the vehicle's floor, or a portion of the battery housing may be at least a part of the vehicle's crossbeams and longitudinal beams.

[0061] Currently, judging from market trends, the application of power batteries is becoming increasingly widespread. Power batteries are not only used in energy storage systems such as hydropower, thermal power, wind power, and solar power plants, but also extensively used in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0062] In existing battery devices, the high-voltage box is usually fully sealed, which makes it difficult to operate the electrical components inside the high-voltage box and makes it difficult to meet the requirements of new energy vehicles and energy storage systems for efficient operation and maintenance and reliability of battery devices.

[0063] Based on the above considerations, this application provides a battery device that improves the ease of installation and maintenance of the high-voltage box electrical components. The battery device provided in this application includes a cover, a tray, individual battery cells, and a high-voltage box. The tray and cover are mutually closed to form a receiving space; the individual battery cells are housed within this receiving space; the high-voltage box includes a hollow box body with a maintenance opening, and the box body is used to house the electrical components; wherein the box body and the cover or tray are integrally formed.

[0064] In this embodiment, the box body and cover or tray are integrally molded, reducing assembly steps between the high-voltage box and the cover or tray, lowering assembly difficulty and time costs, and improving production efficiency. The high-voltage box body has a maintenance port, allowing direct assembly or maintenance of electrical components, improving the convenience of installation and maintenance. The integral molded structure reduces the number of parts and production processes, correspondingly lowering component procurement costs and labor and material costs during processing, thus helping to improve the product's market competitiveness. The integral molded structure avoids gaps between components, improving the sealing of the battery device and enhancing its safety and reliability.

[0065] The technical solutions described in this application are applicable to various electrical devices that use battery devices. These electrical devices can be 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 devices.

[0066] For ease of explanation, the following embodiments use a vehicle as an example of electrical equipment.

[0067] Figure 1 This is a structural schematic diagram of the vehicle according to an embodiment of this application. 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, a motor 200, and a controller 300 can be installed inside vehicle 1000. The controller 300 controls the power supply from the battery device 100 to the motor 200. For example, the battery device 100 can be installed at the bottom, front, or rear of vehicle 1000. The battery device 100 can be used to power vehicle 1000; for example, it can serve as the operating power source for vehicle 1000's electrical system, such as for the power requirements of starting, navigation, and operation. In another embodiment of this application, the battery device 100 can not only serve as the operating power source for vehicle 1000 but also as the driving power source, replacing or partially replacing gasoline or natural gas to provide driving force for vehicle 1000.

[0068] Figure 2 This is a structural diagram of a battery cell according to an embodiment of this application. Figure 3 This is an exploded view of a single battery cell according to an embodiment of this application. Figure 2 and Figure 3 As shown, the battery cell 20 in this embodiment may include a housing 21, an end cap 22, an electrode terminal 23, a pressure relief mechanism 24, and an electrode assembly 25.

[0069] The outer shell 21 is a hollow structure with an opening 211. The electrode assembly 25 is housed within the outer shell 21. The shape of the outer shell 21 can be determined according to the specific shape of the electrode assembly 25. For example, if the electrode assembly 25 is a cuboid structure, the outer shell 21 can also be a cuboid structure.

[0070] The outer shell 21 can also be made of various materials, such as copper, iron, aluminum, stainless steel, aluminum alloy, etc. This application embodiment does not limit this.

[0071] End cap 22 is used to seal opening 211 to form a sealed mounting space for accommodating electrode assembly 25. The mounting space is also used to accommodate electrolyte, such as electrolyte solution. Electrode terminals 23 are mounted on end cap 22 for connection to electrode assembly 25, i.e., electrode terminals 23 are connected to tabs 251 of electrode assembly 25.

[0072] The end cap 22 is also equipped with a pressure relief mechanism 24. When the internal pressure of the battery cell 20 rises abnormally, the pressure relief mechanism 24 can be activated in time to release the excessive pressure inside the battery cell 20, thereby reducing the possibility of dangerous situations such as the battery cell 20 exploding.

[0073] It should be understood that the shape of the battery cell 20 in this application embodiment can be flexibly set according to actual application, that is, the outer shell 21 of the battery cell 20 can be any polyhedral structure, for example, it can be set as a cuboid or a cylinder, etc.

[0074] Figure 4 This is a structural diagram of a battery device according to an embodiment of this application. Figure 4 As shown, the battery device 100 includes a cover 10, a tray 30, a battery cell 20, and a high-voltage box 40. The tray 30 and the cover 10 cover each other to form a receiving space 301. The battery cell 20 is received in the receiving space 301. The high-voltage box 40 includes a hollow box body 406 with a maintenance port 401. The box body 406 is used to receive electrical components. The box body 406 and the cover 10 or the tray 30 are integrally formed.

[0075] In some embodiments, the cover 10 may be a hollow structure with a first opening. The structure of the cover 10 may be designed according to actual application requirements, such as different shapes like square or circular, to adapt to different installation environments and equipment requirements.

[0076] The tray 30 and the cover 10 are fitted together. Specifically, the tray 30 covers the first opening of the cover 10, thereby forming an accommodating space 301. The tray 30 and the cover 10 can be fitted together in various ways, such as by bolt connection, snap-fit ​​connection, or welding.

[0077] The battery cell 20 is housed in the housing space 301. The battery cell 20 is the structure in the battery device 100 that realizes the storage and release of electrical energy. The battery cell 20 can be different types of battery cells 20, such as lithium-ion battery cells or lead-acid battery cells, and can be selected and configured according to the actual use scenario and performance requirements.

[0078] In this embodiment, the high-voltage box 40 of the battery device 100 can distribute the high-voltage DC power output from the battery pack to different electrical devices, ensuring that each device receives stable and suitable voltage and current for normal operation. The high-voltage box 40 is equipped with various protection devices, such as fuses, relays, overcurrent protection devices, and overvoltage protection devices. When abnormal conditions such as overload, short circuit, overvoltage, or undervoltage occur in the circuit, these protection devices will quickly activate, disconnecting the circuit and preventing damage to the equipment due to abnormal current or voltage.

[0079] The high-voltage box 40 includes a hollow housing 406 that houses electrical components. These electrical components may include high-voltage contactors, fuses, relays, and other electrical elements related to high-voltage power transmission and control.

[0080] The box body 406 and the lid 10 or tray 30 are integrally molded. This integral molding process can be achieved through injection molding or similar methods. By directly forming the box body 406 and the lid 10 or tray 30 into a single unit during the molding process, the connection steps between traditional independent components are avoided, reducing the number of parts. Since the box body 406 and the lid 10 or tray 30 are integrally molded, there is no need for separate molds for the high-pressure box 40, reducing parts manufacturing costs, production processes, and the packaging and transportation of the finished high-pressure box 40.

[0081] The one-piece molding structure can also reduce assembly errors that may occur during assembly, and enhance the overall structural strength and sealing performance. For example, when the box body 406 and the lid body 10 are integrally molded, the box body 406 is simultaneously molded as the lid body 10 forms its hollow structure and first opening, with no additional connecting gaps between the two. As another example, when the box body 406 and the tray 30 are integrally molded, the box body 406 and the tray 30 form a single, integrated structure based on the structure of the tray 30 covering the first opening.

[0082] In some embodiments, the high voltage box 40 may be located outside or inside the housing space 301, depending on factors such as the space and usage requirements of the battery device 100.

[0083] The housing 406 has a maintenance port 401. During assembly, electrical components can be conveniently placed directly into the housing 406 through the maintenance port 401. Unlike traditional enclosed housings 406, which require disassembling multiple parts to install electrical components, this simplifies the assembly process and improves production efficiency.

[0084] In some embodiments, the location of the maintenance port 401 can be adjusted in conjunction with the overall layout of the battery device 100. It can be located on the wall opposite the tray 30 or on the wall opposite the cover 10.

[0085] During the service life of the battery unit 100, electrical components may require inspection or replacement due to aging, malfunction, or other reasons. In this case, the presence of the maintenance port 401 makes maintenance operations more efficient. Maintenance personnel can directly access the electrical components inside the housing 406 without disassembling the entire high-voltage box 40 or performing extensive disassembly of the battery unit 100. Through the maintenance port 401, it is convenient to perform operations such as inspection, adjustment, and replacement of the electrical components.

[0086] In this embodiment, the housing 406 and the cover 10 or tray 30 are integrally formed, reducing the assembly steps between the high-voltage housing 40 and the cover 10 or tray 30, lowering assembly difficulty and time costs, and improving production efficiency. The housing 406 of the high-voltage housing 40 has a maintenance port 401, allowing direct assembly or maintenance of electrical components, improving the convenience of installation and maintenance. The integrally formed structure reduces the number of parts and production processes, correspondingly lowering component procurement costs and labor and material costs during processing, thus helping to improve the product's market competitiveness. The integrally formed structure avoids gaps between components, improving the sealing of the battery device 100 and enhancing its safety and reliability.

[0087] In this embodiment, the box 406 and the tray 30 are integrally formed, the high-voltage box 40 is located outside the accommodating space 301, and the high-voltage box 40 and the accommodating space 301 are located on the same side of the tray 30.

[0088] In some embodiments, the high-voltage box 40's body 406 and the tray 30 are integrally molded using processes such as injection molding. Specifically, in the mold for manufacturing the tray 30, the model of the high-voltage box 40 and the model of the tray 30 form a complete mold cavity structure. The dimensions of the high-voltage box 40 are determined according to the specifications of the electrical components to be accommodated internally, ensuring that the internal space of the body 406 can meet the installation and heat dissipation requirements of the electrical components. During the injection molding process, raw material granules are fed into the injection molding machine barrel and heated to melt, thus fully plasticizing the raw material. Driven by the screw of the injection molding machine, the molten raw material is injected into the mold cavity at a certain pressure and speed. Since the mold has an integral model of the high-voltage box 40 and the tray 30, the material simultaneously fills the cavity spaces of both the tray 30 and the high-voltage box 40. Under the action of high pressure inside the mold, the material tightly adheres to the inner wall of the mold, forming the desired structural shape.

[0089] In this embodiment, the high-voltage box 40 is located outside the receiving space 301, independent of the receiving space 301. This makes the wiring of the high-voltage electrical components simpler and clearer, reduces line cross-interference with the battery cells 20, and lowers the probability of electrical faults. Furthermore, when replacing or repairing the electrical components inside the high-voltage box 40, it is not necessary to disassemble the battery cells 20, improving the convenience of maintenance.

[0090] By placing the high-voltage box 40 and the receiving space 301 on the same side of the tray 30, installers can complete the installation of the battery cells 20 and high-voltage electrical components on the same working surface during the assembly of the battery assembly 100. This eliminates the need for repeated switching between the two sides of the tray 30, reducing the number of actions and position adjustments required during installation and making the installation process more seamless and efficient. Furthermore, this layout makes efficient use of the space of the battery assembly 100 perpendicular to the tray 30, avoiding unnecessary space redundancy.

[0091] In this embodiment, the high-voltage box 40 is positioned externally and on the same side as the receiving space 301, making reasonable use of the space of the battery device 100 in the direction perpendicular to the tray 30 and avoiding unnecessary space redundancy. Maintenance personnel can directly inspect and maintain the high-voltage box 40 without disassembling the battery cells 20, shortening maintenance time, reducing maintenance costs, and improving the maintainability of the battery device 100. The layout of the high-voltage box 40 being located externally and on the same side as the receiving space 301 increases the energy storage capacity of the receiving space 301 of the battery device 100. The box body 406 and the tray 30 are integrally formed, eliminating connection gaps between components, improving the overall structural strength and sealing performance, effectively preventing the intrusion of external moisture, dust, and other impurities, and protecting the normal operation of the battery cells 20 and high-voltage electrical components.

[0092] Figure 5 This is a partial front view of the battery device according to an embodiment of this application. Figure 6 This is another partial front view of the battery device according to an embodiment of this application. (In conjunction with...) Figures 4 to 6 As shown, the box body 406 includes a first box wall 402, a second box wall 403, a third box wall 404, and a fourth box wall. The first box wall 402 is disposed opposite to the cover 10. The second box wall 403 is located on the side of the first box wall 402 away from the cover 10 and is disposed opposite to the first box wall 402. The third box wall 404 is disposed opposite to the tray 30. The fourth box wall is perpendicular to the first box wall 402 and perpendicular to the third box wall 404. The maintenance port 401 is disposed on the second box wall 403; or the maintenance port 401 is disposed on the third box wall 404; or the maintenance port 401 is disposed on the fourth box wall.

[0093] In some embodiments, the high-pressure box 40 is a hexahedron, and in addition to being integrally formed with the tray 30, it may also include five walls. Specifically, the first wall 402 of the box body 406 is disposed opposite to the cover 10. The cover 10 may include side walls and a bottom wall; the bottom wall is disposed opposite to the tray 30, and the side walls are perpendicular to the tray 30. The first wall 402 is disposed opposite to the side wall of the cover 10. The second wall 403 is parallel to the first wall 402 and perpendicular to the tray 30, located on the side of the first wall 402 away from the cover 10. The third wall 404 is disposed opposite to the tray 30, i.e., parallel to the tray 30, and perpendicular to the first wall 402 and the second wall 403. The fourth wall is perpendicular to the first wall 402 and perpendicular to the third wall 404; that is, the box body 406 may include two fourth walls. The five walls together form a hollow space within the box body 406.

[0094] The maintenance port 401 can be located on at least one of the five box walls. Optionally, the maintenance port 401 can be located on the second box wall 403, which is suitable for scenarios where the top space of the battery device 100 is limited and high-voltage electrical components need to be installed, wired, or repaired from the side, making it convenient for maintenance personnel to operate from the side and avoiding interference with the top components.

[0095] In this embodiment, optionally, the maintenance port 401 can be located on the third box wall 404, that is, on the top of the high-voltage box 40. The top opening design makes the installation process of electrical components inside the high-voltage box 40 more convenient. During assembly, technicians can directly insert high-voltage contactors, fuses, and other electrical components vertically into predetermined positions inside the box 406 from above, and the high-voltage box 40 can also adapt to different installation environments and equipment layout requirements. For example, during the installation of the new energy vehicle battery device 100, even if the vehicle chassis space is limited, the top-opening high-voltage box 40 can be flexibly arranged to efficiently connect with the battery cell 20 and other electrical systems, meeting the vehicle's design requirements for a compact and integrated battery device 100.

[0096] Optionally, in this embodiment, the maintenance port 401 can be located on the fourth box wall, i.e., on the side of the high-voltage box 40, which is suitable for scenarios where there are special requirements for the front-to-back operation of the battery device 100. For example, in some industrial equipment battery devices 100, the operating space of the equipment is concentrated on the side of the battery device 100 (corresponding to the direction of the fourth box wall). In this case, setting the maintenance port 401 on the fourth box wall can make the installation and maintenance of high-voltage electrical components more in line with the equipment's operating procedures and improve the utilization efficiency of the battery device 100.

[0097] In this embodiment, the maintenance port 401 can be located on the second wall 403, the third wall 404, or the fourth wall, allowing the battery device 100 to adapt to different installation spaces and usage scenarios, meet diverse application needs, and expand the applicability of the battery device 100. Selecting a suitable opening location based on actual operational needs can significantly improve the convenience of installation, wiring, and maintenance of high-voltage electrical components, reduce maintenance time and labor costs, and enhance the maintainability of the battery device 100.

[0098] Figure 7 This is another partial front view of the battery device according to an embodiment of this application. Figure 7 As shown, the battery device 100 also includes an electrical connector 50, which includes a first connector 501, a second connector 502, and a connecting portion 503 connecting the first connector 501 and the second connector 502. The first connector 501 is disposed inside the high-voltage box 40 and exposed outside the tray 30; the second connector 502 is disposed inside the receiving space 301 and exposed outside the tray 30; the connecting portion 503 is disposed inside the tray 30 and is integrally formed with the tray 30.

[0099] In some embodiments, the electrical components in the high-voltage box 40 are connected to the electrical components in the accommodating space 301 via an electrical connector 50, which includes a first connector 501, a second connector 502, and a connecting portion 503.

[0100] Specifically, the first connector 501 is disposed inside the high-voltage box 40 and exposed on the tray 30. The first connector 501 is made of a highly conductive metal material, and its structural design is adapted to the interface of the electrical components inside the high-voltage box 40. For example, when the electrical component is a high-voltage contactor, the first connector 501 can be designed as a pin-type structure to mate with the contactor's socket; if it is a bolt-type interface electrical component, the first connector 501 is designed as a terminal structure with threaded holes, and a reliable connection is achieved by bolt fastening.

[0101] The second connector 502 is disposed within the receiving space 301 and exposed on the tray 30. The second connector 502 is also made of a highly conductive metal material. The second connector 502 can connect to the electrode terminals of the battery cell 20 to transmit the high-voltage DC power output from the battery cell 20, providing power to high-voltage electrical appliances. Simultaneously, during charging, the high-voltage box 40 also transmits the high-voltage DC power input from the charger to the battery cell 20 for charging.

[0102] The high-voltage box 40 can also be electrically connected to the battery management system to transmit relevant electrical signals of the battery device 100 to the battery management system so that the battery management system can collect and analyze data, thereby achieving precise management of the battery pack, such as power balancing, overcharge and over-discharge protection, etc.

[0103] The first connector 501 and the second connector 502 can be metal plates with through holes, which are tightened with bolts or other fasteners to achieve a stable electrical connection.

[0104] The connecting part 503 is disposed inside the tray 30 and integrally formed with the tray 30. The material of the connecting part 503 is the same as that of the first connector 501 and the second connector 502. During the forming process of the tray 30, the connecting part 503 is embedded inside the tray 30 through processes such as injection molding. For example, in injection molding, the pre-made metal part of the connecting part 503 is first placed in the mold, and then plastic raw material is injected, so that the connecting part 503 and the tray 30 are tightly bonded as a whole. The connecting part 503 is completely enclosed by the tray 30, which can avoid the influence of the external environment on the electrical connection circuit and improve the sealing and protection performance of the battery device 100.

[0105] Through the electrical connector 50, the electrical energy generated by the battery cell 20 can be transmitted sequentially through the second connector 502, the connecting part 503 and the first connector 501 to the electrical components inside the high-voltage box 40. This eliminates the need for external cables, simplifies the internal structure of the battery device 100, reduces potential electrical faults, and improves space utilization.

[0106] In this embodiment, the connecting portion 503 of the electrical connector 50 is integrally formed with the tray 30, reducing cable installation and fixing processes, lowering the complexity of the manufacturing process, improving production efficiency, avoiding sealing hazards caused by external cable penetration holes, and enhancing the safety and reliability of the battery device 100. The elimination of external cables reduces the space occupied by cables inside the battery device 100, providing more installation space for the battery cells 20 and increasing the energy storage capacity of the battery device 100. The first connector 501, the second connector 502, and the connecting portion 503 of the electrical connector 50 form an integrated conductive structure, reducing contact resistance and the risk of loose connections, enabling a stable electrical connection between the battery cells 20 and high-voltage electrical components, and improving the electrical performance of the battery device 100.

[0107] In this embodiment, the battery device 100 further includes a reinforcing member disposed inside the tray 30 and integrally formed with the tray 30.

[0108] In some embodiments, when there are a large number of battery cells 20 in the accommodating space 301, the tray 30 is insufficient to support the weight of the battery cells 20. Therefore, a reinforcing member is provided inside the tray 30 to increase the load-bearing capacity of the tray 30.

[0109] The structure of the reinforcing member can be mesh-like, rib-like, honeycomb-like, etc. Specifically, the mesh-like reinforcing member forms a mesh structure through crisscrossing ribs, which can evenly distribute pressure in multiple directions and improve the load-bearing capacity of the pallet 30; the rib-like reinforcing member can be set along the force direction of the pallet 30 to specifically enhance the rigidity in a specific direction, which is suitable for scenarios that bear concentrated loads; the honeycomb-like reinforcing member is based on a hexagonal honeycomb structure, which not only improves the support strength, but also has the advantages of being lightweight and saving materials.

[0110] The reinforcing parts can be made of metal materials, such as steel, aluminum alloys, etc., or organic polymer materials, such as engineering plastics, rubber, etc. When manufacturing and processing the pallet 30, the reinforcing parts can be placed into the mold first and integrally formed during the injection molding process.

[0111] In this embodiment, the reinforcing member inside the tray 30 acts as a reinforcing rib, dispersing the pressure exerted on the tray 30 by components such as the battery cell 20 and the high-voltage box 40, reducing the possibility of local deformation or denting of the tray 30. When the battery device 100 is subjected to external forces such as vibration and impact, the reinforcing member can absorb and buffer energy, reducing the impact of external forces on the battery cell 20 and electrical components, enabling the battery device 100 to operate normally. The one-piece molding design avoids the installation process of additional supporting components, simplifies the production process, and reduces the quality risks caused by loose component connections.

[0112] In this embodiment, the box body 406 and the cover body 10 are integrally formed, and the high-pressure box 40 is located outside the accommodating space 301.

[0113] In some embodiments, the box body 406 and the cover 10 are integrally formed using processes such as injection molding. The box body 406 structure is formed simultaneously during the molding of the cover 10. Specifically, in the mold for manufacturing the cover 10, the model of the high-voltage box 40 and the model of the cover 10 form a complete mold cavity structure. The dimensions of the high-voltage box 40 are determined according to the specifications of the electrical components to be housed internally, ensuring that the internal space of the box body 406 can meet the installation and heat dissipation requirements of the electrical components. The injection molding process is the same as the integral molding of the tray 30 and the box body 406, and will not be described further here.

[0114] In this embodiment, the high-voltage box 40 is also located outside the housing space 301, independent of the housing space 301. This makes the wiring of the high-voltage electrical components simpler and clearer, reduces cross-interference with the battery cells 20, and lowers the probability of electrical faults. Furthermore, when replacing or repairing the electrical components inside the high-voltage box 40, it is not necessary to disassemble the battery cells 20, improving the convenience of maintenance.

[0115] It should be understood that, to prevent damage to the high-voltage box 40, the high-voltage box 40 may also be located inside the accommodating space 301. Furthermore, the high-voltage box 40 may also be integrally formed with the top wall or side wall of the cover 10.

[0116] In some embodiments, the battery device 100 further includes an electrical connector 50, which includes a first connector 501, a second connector 502, and a connecting portion 503 connecting the first connector 501 and the second connector 502. The first connector 501 is disposed within the high-voltage box 40 and exposed outside the cover 10; the second connector 502 is disposed within the receiving space 301 and exposed outside the cover 10; the connecting portion 503 is disposed inside the tray 30 and integrally formed with the tray 30. The first connector 501 and the second connector 502 are located on opposite sides of the cover 10.

[0117] In this embodiment, the design of the housing 406 and the cover 10 being integrally formed, with the high-voltage housing 40 externally mounted, simplifies the structure of the battery device 100, reduces the number of connection links between components, and utilizes the space near the cover 10, thus improving the space utilization rate of the battery device 100. The integrally formed structure eliminates the gap between the housing 406 and the cover 10, effectively blocking external moisture, dust, and other impurities, protecting the high-voltage electrical components and the battery cells 20. The integrally formed structure reduces the number of parts and assembly steps, lowers assembly errors and costs during production, and improves production efficiency.

[0118] Figure 8 This is another partial front view of the battery device according to an embodiment of this application. Figure 8 As shown, the cover 10 includes a cover plate and a surrounding wall 101, and the box body 406 is disposed on the surrounding wall 101.

[0119] In some embodiments, the maintenance opening 401 is provided on the box wall opposite to the enclosure wall 101, that is, the maintenance opening 401 is provided on the box wall opposite to the side wall of the cover 10.

[0120] The position of the housing 406 allows for centralized maintenance of the electrical components inside the high-voltage box 40 on one side of the battery assembly 100. For example, when performing electrical wiring, workers can operate directly at the maintenance port 401 without having to penetrate deep into the battery assembly 100 and interfere with the individual battery cells 20.

[0121] In this embodiment, the housing 406 is disposed on the side of the cover 10. The position of the housing 406 concentrates the maintenance operations of the electrical components inside the high-voltage box 40 on one side of the battery device 100. During maintenance, the high-voltage electrical components can be directly accessed from the side, improving operational convenience. At the same time, this position also utilizes the space of the battery device 100 in the direction perpendicular to the tray 30, improving the vertical space utilization rate of the battery device 100.

[0122] Continue to refer to Figure 8 The maintenance port 401 is located on the box wall opposite the enclosure wall 101 of the box body 406.

[0123] In some embodiments, the maintenance opening 401 is located on a box wall opposite to the enclosure wall 101, that is, the box wall where the maintenance opening 401 is located is parallel to the enclosure wall 101 and perpendicular to the tray 30. It should be understood that the maintenance opening 401 may also be located on other walls of the box body 406, for example, the box wall where the maintenance opening 401 is located is perpendicular to the enclosure wall 101.

[0124] In this embodiment, the box 406 is mounted on the wall 101 perpendicular to the tray 30, and the wall containing the maintenance port 401 is positioned opposite the wall 101. The box 406 is connected to the wall 101 the most times, which improves the stability of the connection between the box 406 and the wall 101, enhances the overall structural strength of the battery device 100, and enables the battery device 100 to better maintain its structural integrity and protect its components from damage when subjected to external forces such as vibration and impact.

[0125] Figure 9 This is another structural diagram of the battery device according to an embodiment of this application. (In conjunction with...) Figures 4 to 9 As shown, the high-voltage box 40 also includes a maintenance cover 405, which covers the maintenance port 401 and is detachably connected to the box body 406.

[0126] In some embodiments, the shape and size of the maintenance cover 405 are adapted to the maintenance opening 401, and it can adopt various structural forms such as flat type and flip-top type. The flat type maintenance cover 405 has a simple structure and can be fixed to the box body 406 by bolts, buckles and other connecting parts; the flip-top type maintenance cover 405 is connected to the box body 406 by hinges, making the opening and closing operation more convenient and suitable for scenarios that require frequent maintenance.

[0127] Specifically, when using bolt connections, multiple bolt holes are provided on the maintenance cover 405, which are fastened to the corresponding bolt holes on the box body 406 by bolts. To enhance the sealing performance, sealant can be applied around the bolt holes. When using snap-fit ​​connections, interlocking snaps and slots are provided on the maintenance cover 405 and the box body 406, respectively. Quick installation and disassembly are achieved through the elastic engagement of the snaps. At the same time, sealing strips are provided on the edges of the snaps to improve the sealing effect.

[0128] The maintenance cover 405 can be made of the same or matching insulating material as the box body 406 to maintain the insulation performance of the entire high voltage box 40.

[0129] In some embodiments, a sealing structure, such as a sealing strip, is provided at the contact area between the maintenance cover 405 and the housing 406. The sealing strip may be made of silicone rubber, which has good elasticity and sealing performance. When the maintenance cover 405 is closed, it fills the gap by squeezing and deforming, preventing external moisture, dust and other impurities from entering the interior of the high-pressure box 40.

[0130] In this embodiment, the maintenance cover 405 simplifies the inspection and replacement of electrical components inside the high-voltage box 40, shortens maintenance time, improves maintenance efficiency, and reduces maintenance costs. Through sealing structures such as sealing strips and sealing rings, the sealing performance of the high-voltage box 40 is improved when the maintenance cover 405 is closed, preventing the intrusion of external impurities, maintaining a stable operating environment for the high-voltage electrical components, and enhancing the safety and reliability of the battery device 100.

[0131] In this embodiment, the cover 10, tray 30 and high-voltage box 40 are made of insulating materials.

[0132] In some embodiments, the insulating material possesses electrical insulation properties, preventing current leakage, and also exhibits good mechanical properties, allowing it to withstand certain external forces without damage. Common insulating materials include epoxy resin and polycarbonate, which can be selected based on the actual usage environment and performance requirements.

[0133] Both the cover 10 and the tray 30 are made of insulating materials, making the containing space 301 an insulated and enclosed area, providing a safe working environment for the battery cell 20. The connection between the tray 30 and the cover 10 can be treated with a sealing process to enhance the insulation and sealing effect.

[0134] The high-voltage box 40 is made of insulating material, which can effectively isolate electrical components from the outside world, prevent operators from accidentally coming into contact with high-voltage live parts, and prevent short circuits and other faults caused by poor insulation between electrical components.

[0135] In the one-piece molded structure, the insulating material effectively isolates the electrical connector 50 from the external environment and other non-electrical components of the battery device 100. When the connector 503 is embedded inside the tray 30 and integrally molded with the tray 30, it is tightly wrapped by the insulating material on all sides, preventing the electrical connector 50 from directly contacting other conductive materials and preventing the risk of leakage.

[0136] In this embodiment, the cover 10, tray 30, and high-voltage box 40 are all made of insulating materials, which can prevent electrical faults such as current leakage and short circuits, reduce the risk of electric shock to operators, and improve the safety of the battery device 100 during use. The one-piece molded insulating structure reduces weak points in the insulation, enabling the battery device 100 to maintain stable insulation performance under different environmental conditions and extending the service life of the battery device 100.

[0137] In this embodiment, the material of the electrical connector 50 includes copper or aluminum.

[0138] In some embodiments, copper exhibits good electrical conductivity, with a conductivity reaching 5.96 × 10⁻⁶. 7 S / m indicates low resistance loss during current transmission. When the battery device 100 is used in scenarios with high requirements for power transmission efficiency, such as high-performance electric vehicles and high-precision energy storage devices, the use of copper electrical connectors 50 enables stable transmission of large currents, reduces energy loss due to line heating, and improves the overall efficiency of the battery device 100.

[0139] Copper also possesses good mechanical strength and machinability. Through processes such as stamping and forging, it can be made into connectors and connecting parts 503 of various complex shapes, which can be adapted to the electrodes of battery cells 20 and high-voltage electrical components of different specifications. Therefore, the electrical connector 50 can be made of copper or copper alloy.

[0140] In some embodiments, aluminum has a low density and light weight, and possesses good electrical and thermal conductivity. Furthermore, a dense aluminum oxide film easily forms on the surface of aluminum, providing good corrosion resistance. However, pure aluminum has low mechanical strength and hardness, typically requiring strengthening treatment during use. By adding elements such as magnesium, silicon, and copper to form aluminum alloys, the mechanical strength and hardness of aluminum can be significantly improved while maintaining good electrical conductivity and corrosion resistance. Therefore, the electrical connector 50 can be made of aluminum or an aluminum alloy.

[0141] In this embodiment, optionally, the advantages of different materials can be combined to manufacture the electrical connector 50 using composite materials. For example, copper-clad aluminum or aluminum-clad copper composite materials can be used as the electrical connector 50. This composite material utilizes the good conductivity of copper and the lightweight and low cost of aluminum, while also improving the mechanical strength and corrosion resistance of the electrical connector 50. In addition, some fiber-reinforced composite materials, such as carbon fiber reinforced plastics, are also used in the manufacture of electrical connectors 50 for some special applications.

[0142] In this embodiment, copper or aluminum materials are selected according to different application scenarios, which can specifically meet the requirements of the battery device 100 for conductivity, lightweight, cost control, etc., so that the battery device 100 can operate efficiently and stably under various working conditions.

[0143] In this embodiment, the cover 10 is sealed to the tray 30.

[0144] In some embodiments, the connection between the tray 30 and the cover 10 needs to be airtight and stable to prevent external moisture, dust, and other impurities from entering the accommodating space 301 and affecting the normal operation of the battery cell 20. The connection between the cover 10 and the tray 30 can be achieved by adhesive bonding, heat fusion bonding, or connector bonding, etc.

[0145] In this embodiment, optionally, an adhesive with good sealing performance and bonding strength is used to connect the cover 10 and the tray 30. At the connection point between the cover 10 and the tray 30, surface impurities are pre-cleaned to ensure a clean and flat connection surface. Adhesive is evenly applied to the edge of the cover 10 or the tray 30 using a dispensing machine or manually. The tray 30 is then accurately placed over the first opening of the cover 10, and appropriate pressure is applied to ensure a tight fit. After the adhesive cures, a strong and sealed connection structure is formed.

[0146] Adhesives can be selected from silicone sealants, epoxy resin adhesives, etc. Silicone sealants have excellent weather resistance and elasticity, and can maintain good sealing performance even under environments with temperature changes and vibration; epoxy resin adhesives have high strength and good chemical stability, and are suitable for scenarios with high requirements for joint strength.

[0147] In this embodiment, optionally, the cover 10 and the tray 30 are made of heat-fusible materials, such as thermoplastics like polypropylene and polyethylene. During connection, the connection area between the cover 10 and the tray 30 is heated using heat-fusion equipment, such as a heat-fusion welding gun or a heat-fusion machine, to melt the material. Then, the tray 30 and the cover 10 are quickly pressed together. During cooling, the molten material re-solidifies, achieving an integrated, sealed connection. This heat-fusion connection method requires no additional sealing material, offers high connection strength, and provides excellent sealing.

[0148] In this embodiment, optionally, a connector is used to connect the cover 10 and the tray 30. The connector may include sealing bolts, sealing clips, etc. Specifically, the cover 10 and the tray 30 include corresponding bolt holes. A sealing washer, such as a rubber washer, is provided at the bolt hole. When the bolt is tightened, the sealing washer is compressed and deformed, filling the gap between the bolt hole and the bolt, preventing external impurities from entering. The sealing clip connects the cover 10 and the tray 30 through the snap-fit ​​body and the snap-fit ​​part. At the same time, a sealing strip may be provided on the edge of the clip to further enhance the sealing performance.

[0149] In some embodiments, multiple connection methods can be combined. For example, a heat fusion connection can be used to initially fix and basically seal the cover 10 and tray 30, and then adhesive can be applied to the connection edges for secondary sealing; or after connecting with connectors, sealant can be filled into the gaps to further improve the sealing effect.

[0150] In this embodiment, various sealing connection methods such as adhesive bonding, heat fusion, or connectors can prevent moisture, dust, and other impurities from entering the battery device 100, providing a good protective environment for the battery cells 20 and electrical components, and improving the safety and reliability of the battery device 100. Adhesive bonding and heat fusion methods can improve assembly efficiency and reduce labor costs in large-scale production; connector connection methods facilitate maintenance and reduce repair costs. The selection and combination of different connection methods help to optimize the cost control of the battery device 100. Multiple connection methods can be selected according to different usage scenarios, material characteristics, and production needs of the battery device 100, and can also be used in combination to meet diverse design requirements.

[0151] According to some embodiments of this application, this application also provides an electrical device, which may include a battery device 100 for providing electrical energy.

[0152] The battery device 100 includes a cover 10, a tray 30, a battery cell 20, and a high-voltage box 40. The tray 30 and the cover 10 cover each other to form a receiving space 301. The battery cell 20 is received in the receiving space 301. The high-voltage box 40 includes a hollow box body 406 with a maintenance port 401. The box body 406 is used to receive electrical components. The box body 406 and the cover 10 or the tray 30 are integrally formed.

[0153] It should be understood that the battery device 100 may also include the battery device 100 in any of the above embodiments.

[0154] The electrical equipment can be any of the aforementioned devices or systems that utilize battery devices 100.

[0155] According to some embodiments of this application, see Figures 4 to 9 This application provides a battery device 100, which includes a cover 10, a tray 30, a battery cell 20, and a high-voltage box 40. The tray 30 and the cover 10 cover each other to form a receiving space 301. The battery cell 20 is received in the receiving space 301. The high-voltage box 40 includes a hollow box body 406 with a maintenance port 401. The box body 406 is used to receive electrical components. The box body 406 and the cover 10 or the tray 30 are integrally formed.

[0156] The box body 406 and the tray 30 are integrally formed. The high-voltage box 40 is located outside the receiving space 301, and the high-voltage box 40 and the receiving space 301 are located on the same side of the tray 30. The box body 406 includes a first box wall 402, a second box wall 403, a third box wall 404, and a fourth box wall. The first box wall 402 is disposed opposite to the cover 10. The second box wall 403 is located on the side of the first box wall 402 away from the cover 10 and is disposed opposite to the first box wall 402. The third box wall 404 is disposed opposite to the tray 30. The fourth box wall is perpendicular to the first box wall 402 and perpendicular to the third box wall 404. The maintenance port 401 is disposed on the second box wall 403; or the maintenance port 401 is disposed on the third box wall 404; or the maintenance port 401 is disposed on the fourth box wall.

[0157] The battery device 100 also includes an electrical connector 50, which includes a first connector 501, a second connector 502, and a connecting portion 503 connecting the first connector 501 and the second connector 502. The first connector 501 is disposed within the high-voltage box 40 and exposed outside the tray 30; the second connector 502 is disposed within the receiving space 301 and exposed outside the tray 30; the connecting portion 503 is disposed inside the tray 30 and integrally formed with the tray 30. The battery device 100 also includes a reinforcing member disposed inside the tray 30 and integrally formed with the tray 30.

[0158] Optionally, the housing 406 and the cover 10 are integrally formed, and the high-voltage box 40 is located outside the receiving space 301. The cover 10 includes a cover plate and a surrounding wall 101, with the housing 406 disposed on the surrounding wall 101. A maintenance port 401 is disposed on the housing wall opposite to the surrounding wall 101. The high-voltage box 40 also includes a maintenance cover 405, which covers the maintenance port 401 and is detachably connected to the housing 406. The cover 10, the tray 30, and the high-voltage box 40 are all made of insulating material. The cover 10 and the tray 30 are sealed together.

[0159] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and not to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: Cover (10); A tray (30) that covers the cover (10) to form a receiving space (301). A battery cell (20) is housed in the housing space (301); A high-voltage box (40) comprising a hollow box body (406) having a maintenance port (401) for accommodating electrical components; The box body (406) and the cover body (10) or the tray (30) are integrally formed.

2. The battery device according to claim 1, characterized in that, The box body (406) and the tray (30) are integrally formed. The high-voltage box (40) is located outside the accommodating space (301), and the high-voltage box (40) and the accommodating space (301) are located on the same side of the tray (30).

3. The battery device according to claim 2, characterized in that, The box body (406) includes a first box wall (402), a second box wall (403), a third box wall (404), and a fourth box wall. The first box wall (402) is disposed opposite to the cover (10). The second box wall (403) is located on the side of the first box wall (402) away from the cover (10) and is disposed opposite to the first box wall (402). The third box wall (404) is disposed opposite to the tray (30). The fourth box wall is perpendicular to the first box wall (402) and perpendicular to the third box wall (404). The maintenance port (401) is located on the second box wall (403); or The maintenance port (401) is located on the third box wall (404); or The maintenance port (401) is located on the wall of the fourth box.

4. The battery device according to claim 2, characterized in that, The battery device further includes an electrical connector (50), which includes a first connector (501), a second connector (502), and a connecting portion (503) connecting the first connector (501) and the second connector (502). The first connector (501) is disposed inside the high-voltage box (40) and exposed outside the tray (30); The second connector (502) is disposed within the receiving space (301) and exposed outside the tray (30); The connecting part (503) is disposed inside the tray (30) and is integrally formed with the tray (30).

5. The battery device according to claim 2, characterized in that, The battery device also includes a reinforcing member disposed inside the tray (30) and integrally formed with the tray (30).

6. The battery device according to claim 1, characterized in that, The box body (406) and the cover body (10) are integrally formed, and the high-pressure box (40) is located outside the accommodating space (301).

7. The battery device according to claim 6, characterized in that, The cover (10) includes a cover plate and a surrounding wall (101) arranged around the cover plate, and the box (406) is disposed on the surrounding wall (101).

8. The battery device according to claim 7, characterized in that, The maintenance port (401) is located on the box wall opposite to the enclosure wall (101) of the box body (406).

9. The battery device according to any one of claims 1 to 8, characterized in that, The high-voltage box (40) also includes a maintenance cover (405), which covers the maintenance port (401) and is detachably connected to the box body (406).

10. The battery device according to any one of claims 1 to 8, characterized in that, The cover (10), the tray (30), and the high-voltage box (40) are made of insulating materials.

11. The battery device according to any one of claims 1 to 8, characterized in that, The cover (10) is sealed to the tray (30).

12. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 11, the battery device being used to provide electrical energy.

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