Battery device and electric device

Abstract

The application discloses a battery device and a power utilization device, the battery device comprises a box body, a battery monomer assembly and a high-voltage box, the battery monomer assembly and the high-voltage box are arranged in the box body, the high-voltage box comprises a shell, a battery management mainboard, an electrical assembly and an electrical connection assembly, the battery management mainboard is installed in the shell, the electrical assembly comprises at least one electrical component, the electrical assembly is installed in the shell, the electrical connection assembly comprises an insulating component and a plurality of electrical connection components, the plurality of electrical connection components are arranged on the insulating component and are arranged at intervals, the insulating component is fixed to the shell, and the electrical connection components are electrically connected between the battery management mainboard and the electrical component. According to the battery device, the assembly and connection process of the BMU of the battery device and the high-voltage box is simple, the wire arrangement process can be omitted, the assembly difficulty is relatively low, and the assembly efficiency is improved.

Description

Technical Field

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

[0002] The Battery Management Unit (BMU) is typically mounted as a separate module on the battery pack housing or battery box frame, physically separated from the high-voltage box. The electrical signal exchange between the BMU and critical circuits within the high-voltage box, such as fuses, relays, and current sensors, is mainly achieved through wiring harness connections.

[0003] During the process of connecting and assembling the BMU with the high-voltage box, the connecting wire harnesses between the BMU and the components inside the high-voltage box are usually fixed one by one with wire clips. The wire management process is complicated, the assembly is difficult, and the assembly efficiency is reduced. Summary of the Invention

[0004] In view of the above problems, the present invention provides a battery device and an electrical device. The assembly and connection process of the battery device's BMU and high-voltage box is simple, can eliminate the wiring process, has low assembly difficulty, and is conducive to improving assembly efficiency.

[0005] In a first aspect, the present invention provides a battery device, including a housing, a battery cell assembly, and a high-voltage box. The battery cell assembly and the high-voltage box are disposed within the housing. The high-voltage box includes a shell, a battery management main board, electrical components, and electrical connection components. The battery management main board is installed inside the shell. The electrical components include at least one electrical element and are installed inside the shell. The electrical connection components include an insulating element and multiple electrical connectors. The multiple electrical connectors are disposed on the insulating element and spaced apart. The insulating element is fixed to the shell. The electrical connectors electrically connect the battery management main board and the electrical components.

[0006] In the above technical solution, by placing the battery management motherboard inside the high-voltage box housing, the separate housing for installing the battery management unit is eliminated, and the battery management motherboard and high-voltage box are integrated into a single unit. This shortens the length of the electrical connections between the battery management motherboard and the electrical components inside the high-voltage box, facilitating their connection. Furthermore, all electrical connections between the battery management motherboard and the electrical components inside the high-voltage box are housed on an insulating component. This allows all electrical connections between the battery management motherboard and the electrical components inside the high-voltage box to be integrated onto the insulating component, making them a single unit. The insulating component can then be used to fix multiple electrical connections together to the housing, eliminating the need for complex wiring and multiple wire clips on the housing. This reduces the difficulty of connecting the battery management motherboard and the electrical components inside the high-voltage box, thereby reducing the assembly difficulty of the battery management motherboard and the high-voltage box and improving the assembly efficiency of the battery device.

[0007] In some embodiments, the electrical connector includes a body, a first connection end, and a second connection end, the first connection end and the second connection end extending from both ends of the body, the body being fixed to the insulating member, the first connection end and the second connection end both extending beyond the insulating member, the first connection end being connected to the electrical component, and the second connection end being connected to the battery management motherboard.

[0008] In the above technical solution, the main body is fixed to the insulating component, and the main body of the electrical connector is fixed to the housing through the insulating component; both the first connecting end and the second connecting end extend beyond the insulating component, so that the first connecting end and the second connecting end can be electrically connected to the electrical component and the battery management motherboard, and reduce the probability of damaging the insulating component when the first connecting end is connected to the electrical component, and increase the operating space when the first connecting end is connected to the electrical component.

[0009] In some embodiments, the first connection end is welded to the electrical component.

[0010] In the above technical solution, the first connecting end is welded to the electrical component, which enhances the connection strength between the first connecting end and the electrical component. The weld can effectively transfer the load, allowing the first connecting end and the electrical component to form a continuous whole, eliminating the probability of relative slippage and loosening, and effectively withstanding dynamic loads and impact loads.

[0011] In some embodiments, the first connecting end is a flat plate structure and has a first connecting surface, the electrical component has a low-voltage end, the low-voltage end has a second connecting surface, the second connecting surface and the first connecting surface are both planar, and the second connecting surface and the first connecting surface are fitted together and welded together.

[0012] In the above technical solution, the first connecting end is a flat plate structure, which increases the conductive contact area, reduces the contact resistance, and reduces the probability of overheating and ablation caused by poor local contact under high current; it provides a large welding position during welding, reducing the welding difficulty; the second connecting surface and the first connecting surface are both flat, and the second connecting surface and the first connecting surface are fitted together and welded together, reducing the gap between the second connecting surface and the first connecting surface and reducing the probability of poor welding.

[0013] In some embodiments, the electrical connector further includes a buffer portion connected between the body and the first connection end, the buffer portion being exposed outside the insulating member and formed by a partial bend of the electrical connector.

[0014] In the above technical solution, the buffer part is exposed outside the insulating part and is formed by partial bending of the electrical connector. The buffer part can absorb vibration or thermal expansion stress and reduce the probability of fatigue fracture of the weld point.

[0015] In some embodiments, the buffer section is a U-shaped or stepped structure.

[0016] In the above technical solutions, the protrusions of the U-shaped or stepped structure increase the ability to absorb vibration or thermal expansion stress while preserving structural strength as much as possible.

[0017] In some embodiments, the second connection end is soldered to the battery management motherboard.

[0018] In the above technical solution, the second connection end is welded to the battery management motherboard, which enhances the connection strength between the second connection end and the battery management motherboard. The weld can effectively transfer the load, allowing the second connection end and the battery management motherboard to form a continuous whole, reducing the probability of relative slippage and loosening, and effectively withstanding dynamic loads and impact loads.

[0019] In some embodiments, the battery management motherboard is provided with a plug-in hole, and the second connection end is plugged into and soldered to the plug-in hole.

[0020] In the above technical solution, the battery management motherboard is provided with a plug hole, and the second connection end is plugged into and welded to the plug hole. The plug hole can realize the pre-positioning of the battery management motherboard and the second connection end, reducing the probability of misalignment, displacement, cold solder joint, and off-center solder joint during the welding process. The welding forms a metallurgical bond, which reduces the contact resistance present in pure plug-in connection, improves the continuity of conductive path, and reduces heat generation and voltage loss during current transmission.

[0021] In some embodiments, the electrical connector further includes a connecting segment connected between the body and the second connecting end and exposed outside the insulating member, the connecting segment having an angle with the body.

[0022] In the above technical solution, by connecting the connecting segment between the main body and the second connecting end and exposing it to the insulating component, and by having an angle between the connecting segment and the main body, the position of the second connecting end corresponds to the position of the connection point of the battery management motherboard, which facilitates the connection of the second connecting end to the battery management motherboard.

[0023] In some embodiments, at least a portion of the body is embedded within the insulating element.

[0024] In the above technical solution, at least a portion of the main body is embedded within the insulating component, thereby insulating at least a portion of the main body; and by using the method of at least partial embedding, the main body is connected more tightly to the insulating component, resulting in a stronger connection.

[0025] In some embodiments, the insulating element is integrally injection molded onto a plurality of electrical connectors.

[0026] In the above technical solution, the insulating component is integrally injection molded onto multiple electrical connectors, so that multiple electrical connectors are set on one insulating component. Multiple electrical connectors can collect multiple signals, eliminating the need for a corresponding insulating component for each electrical connector, reducing the number of insulating components and simplifying the structure of the battery device; and multiple electrical connectors can be positioned in one injection molding, reducing the processing difficulty.

[0027] In some embodiments, the electrical connector is provided with a first positioning hole, and the insulating member is provided with a second positioning hole, the second positioning hole being positioned corresponding to the first positioning hole.

[0028] In the above technical solution, the electrical connector is provided with a first positioning hole, and the insulating component is provided with a second positioning hole. The second positioning hole corresponds to the first positioning hole. When the insulating component and the electrical connector are injection molded, the electrical connector can be positioned through the second positioning hole to prevent the electrical connector from being displaced by the impact of the injection liquid during the injection molding process, which would lead to a decrease in positional accuracy and changes in the distance between multiple electrical connectors.

[0029] In some embodiments, the insulating element is secured to the housing by fasteners.

[0030] In the above technical solution, the insulating component is fixed to the housing by fasteners. The fasteners can be used to fix the components, and assembly and disassembly can be completed with simple tools without damaging the insulating component, thus reducing the probability of damage to the electrical connectors.

[0031] In some embodiments, the housing is provided with a fixing post, the fixing post is disposed inside the housing, the insulating member is provided with a fixing point, and the fixing point is connected to the fixing post by a fastener.

[0032] In the above technical solution, by setting a fixing post inside the housing, the fixing point of the insulating component is connected to the fixing post by fasteners, thereby improving the ease of operation when the insulating component is fixed by fasteners.

[0033] In some embodiments, the insulating element has a plurality of fixing points between it and the housing, and at least three of the plurality of fixing points are arranged in a triangular pattern.

[0034] In the above technical solution, at least three of the multiple fixing points are arranged in a triangle. The three fixing points arranged in a triangle can form a stable support plane. When the insulating component is subjected to compression, vibration, or impact, the probability of it rotating, warping, or tipping over around a certain axis is reduced, thereby enhancing the stability of the fixing between the insulating component and the shell.

[0035] In some embodiments, the electrical components are a plurality of spaced-apart components, the electrical connection assembly is located between two adjacent electrical components, and the plurality of electrical connection components are electrically connected to two electrical components respectively.

[0036] In the above technical solution, by placing an electrical connection component between two adjacent electrical components, and having multiple electrical connection components electrically connected to the two electrical components respectively, one electrical connection component can be electrically connected to two electrical components simultaneously to collect the electrical signals of the two electrical components, thus simplifying the structure of the high-voltage box.

[0037] In some embodiments, the electrical component includes a low-voltage terminal and a high-voltage terminal, the electrical connector electrically connects the battery management motherboard to the low-voltage terminal, the high-voltage box further includes a conductive component and a heat sink, the conductive component is at least partially embedded in the housing, the conductive component is electrically connected to the battery management motherboard and the high-voltage terminal, the heat sink is fixed to the outside of the housing, the position of the heat sink corresponds to the position of the conductive component and is used to dissipate heat from the conductive component.

[0038] In the above technical solution, by setting a heat sink on the outside of the housing, and the position of the heat sink is the same as that of the conductive component, the heat sink dissipates the heat generated by the conductive component and transfers it to the outside of the high voltage box, thereby achieving the heat dissipation function. This reduces the overall temperature peak inside the high voltage box, which is beneficial to extending the life of electrical components, reducing local overheating, and reducing the impact of thermal stress on sampling accuracy.

[0039] In some embodiments, a thermally conductive layer is provided between the heat sink and the conductive component.

[0040] In the above technical solution, a heat-conducting layer is provided between the heat sink and the conductive component. The heat from the conductive component is transferred to the heat sink through the heat-conducting layer, which accelerates heat transfer and improves heat dissipation efficiency.

[0041] In some embodiments, the heat dissipation component is a water-cooled plate.

[0042] In the above technical solution, by setting the heat dissipation component as a water-cooled plate, the coolant inside the water-cooled plate carries away the heat of the conductive components, thereby improving the heat dissipation efficiency.

[0043] In some embodiments, the battery management motherboard is fixed to the housing.

[0044] In the above technical solution, the battery management motherboard is fixed to the housing, positioning the battery management motherboard relative to the housing. The force on the battery management motherboard is transferred to the housing, which has higher strength, reducing the load on the battery management motherboard. The battery management motherboard maintains a designed distance from surrounding components, reducing the probability of failure caused by abnormal friction.

[0045] In some embodiments, the battery management motherboard is detachably connected to the housing.

[0046] In the above technical solution, the battery management motherboard and the housing are detachably connected, and assembly and disassembly can be completed using simple tools without damaging the battery management motherboard and the housing.

[0047] In some embodiments, the housing includes a housing body and a spacer plate, the spacer plate being disposed within the housing body and dividing the space within the housing body into a first receiving space and a second receiving space, the battery management mainboard being received in the first receiving space, and the electrical components being received in the second receiving space.

[0048] In the above technical solution, the battery management motherboard is housed in the first housing space, and the electrical components are housed in the second housing space. The battery management motherboard and the electrical components are located in different housing spaces within the high-voltage box. The battery management motherboard is the core of low-voltage control, responsible for sampling, calculation, communication, and issuing protection commands. The electrical components are high-voltage power components that carry the large current of the battery pack's main circuit. The compartmentalized arrangement can structurally cut off the path for high-voltage electricity to enter the low-voltage area, reducing the possibility of the battery management motherboard being burned out by high voltage. When the high-voltage electrical components are working, they will generate strong electromagnetic interference. The independent housing space can block these interferences, reducing the probability of sampling signal distortion, communication interruption, or false triggering of protection logic by the battery management motherboard. When the high-voltage electrical components conduct large currents, they will generate a large amount of Joule heat, and the temperature rise of some components can reach tens of degrees Celsius. The chips, sensors, capacitors, etc. on the battery management motherboard are extremely sensitive to temperature. Isolating the heat source from the sensitive components can reduce the risk of accelerated aging and performance degradation of the components due to long-term high temperature of the battery management motherboard.

[0049] In some embodiments, the battery management motherboard is fixed to the spacer plate.

[0050] In the above technical solution, the battery management motherboard is fixed to the spacer plate, so that the battery management motherboard is positioned relative to the spacer plate. The force of the battery management motherboard is transferred to the spacer plate with higher strength, reducing the load on the battery management motherboard. The battery management motherboard maintains a designed distance from the surrounding components, reducing the probability of failure caused by abnormal friction.

[0051] In a second aspect, the present invention provides an electrical device, comprising: a battery device according to an embodiment of the first aspect of the present invention.

[0052] In the above technical solution, the electrical device includes a battery device according to the first aspect of the present invention. By placing the battery management motherboard inside the housing of the high-voltage box, the housing for installing the battery management unit is eliminated, and the battery management motherboard and the high-voltage box are integrated into one unit. This helps to shorten the length of the electrical connectors between the battery management motherboard and the electrical components inside the high-voltage box, facilitating the connection between the battery management motherboard and the electrical components inside the high-voltage box. Furthermore, multiple electrical connectors between the battery management motherboard and the electrical components inside the high-voltage box are all located on an insulating member. This allows multiple electrical connectors between the battery management motherboard and the electrical components inside the high-voltage box to be integrated on the insulating member, making multiple electrical connectors between the battery management motherboard and the electrical components inside the high-voltage box a whole. Multiple electrical connectors can be fixed together to the housing through the insulating member, eliminating the complicated wiring process and the need to set multiple wire clip structures on the housing for fixing wires. This reduces the connection difficulty between the battery management motherboard and the electrical components inside the high-voltage box, which helps to reduce the assembly and connection difficulty between the battery management motherboard and the high-voltage box, thereby improving the assembly efficiency of the battery device.

[0053] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0054] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0055] Figure 1 This is a schematic diagram of a battery device according to some embodiments of the present invention;

[0056] Figure 2 for Figure 1 An exploded view of the high-voltage box of the battery device;

[0057] Figure 3 for Figure 2 A 3D view of the internal structure of the high-voltage box;

[0058] Figure 4 for Figure 3 A perspective view of multiple electrical connectors of the electrical connection assembly of the high-voltage box;

[0059] Figure 5 for Figure 4 A three-dimensional view of the electrical connectors;

[0060] Figure 6 for Figure 3 A three-dimensional view of the electrical connection components of the high-voltage box;

[0061] Figure 7 for Figure 3 A three-dimensional view of the internal structure of the high-voltage box from another perspective;

[0062] Figure 8 for Figure 2 A partial three-dimensional view of the base of the high-voltage box;

[0063] Figure 9 for Figure 2 A three-dimensional sectional view of the high-voltage box;

[0064] Figure 10 for Figure 2 A schematic diagram of the heat dissipation of the high-voltage box;

[0065] Figure 11 for Figure 2 A 3D view of the high-voltage box;

[0066] Figure 12 This is a schematic diagram of an electrical device according to some embodiments of the present invention.

[0067] Figure label:

[0068] 1000. Electrical appliances;

[0069] 100. Battery device;

[0070] 10. High-voltage box;

[0071] 11. Housing; 110. Top cover; 1101. Snap-fit ​​part; 1102. Snap-fit ​​groove; 1103. Top plate; 1104. First side plate; 111. Base; 1110. Snap-fit ​​protrusion; 1111. Bottom plate; 1112. Partition plate; 1113. Partition plate; 1114. Receiving cavity; 1115. Fixing post; 113. First receiving space; 114. Second receiving space;

[0072] 12. Battery management mainboard; 120. Connector;

[0073] 13. Electrical components; 130. Low-voltage end; 131. High-voltage end;

[0074] 14. Electrical connection assembly; 140. Electrical connector; 1401. Main body; 14010. First positioning hole; 1402. Buffer part; 1403. First connecting end; 1404. Second connecting end; 1405. Connecting section; 141. Insulating component; 1410. Second positioning hole; 1411. Riveting hole;

[0075] 15. Conductive component; 151. First conductive element; 152. Second conductive element; 16. Heat sink;

[0076] 200. Vehicle body. Detailed Implementation

[0077] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0078] Unless otherwise defined, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used in the specification of this application is for the purpose of describing particular embodiments only and is not intended to limit the invention; the terms "comprising" and "having," and any variations thereof, in the specification, claims, and foregoing drawings are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the specification, claims, or foregoing drawings are used to distinguish different objects, not to describe a particular order or hierarchy.

[0079] In this invention, 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 the invention. 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 mutually exclusive with other embodiments.

[0080] In the description of this invention, it should be noted that, unless otherwise explicitly 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 invention according to the specific circumstances.

[0081] In this invention, 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 invention, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0082] In the embodiments of the present invention, 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 the present invention 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 the present invention.

[0083] In this invention, "multiple" refers to two or more.

[0084] In the description of the embodiments of this application, the technical terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this application.

[0085] In the embodiments of the present invention, unless otherwise specified, all embodiments and optional embodiments of the present invention can be combined with each other to form new technical solutions.

[0086] In the embodiments of the present invention, unless otherwise specified, all technical features and optional technical features of the present invention can be combined with each other to form new technical solutions.

[0087] In embodiments of the present invention, the battery device may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells connected in series, parallel, or mixed connections via a busbar. For example, a battery cell assembly is typically formed by arranging multiple battery cells; a battery cell assembly may also be a battery module, which is formed by arranging and fixing multiple battery cells into a single module. As an example, a battery module may be formed by bundling multiple battery cells together with cable ties.

[0088] The battery device can be a battery pack, which includes a housing and one or more individual battery cells housed within the housing. The individual battery cells can be battery modules, which can be housed within the housing by fixing the battery modules to the housing; alternatively, multiple individual battery cells can be housed within the housing by directly fixing them to the housing.

[0089] In embodiments of this application, the housing may include a first housing and a second housing. The first housing and the second housing are fastened together to form a closed space inside the housing for housing individual battery cells. Here, "closed" refers to covering or shutting down; it can be sealed or unsealed. The first housing may be a top cover or a bottom plate. For example, the housing may include a top cover, a frame, and a bottom plate. The top cover and the bottom plate are respectively connected to the frame, forming a closed space inside the housing for housing individual battery cells.

[0090] In embodiments of this application, the housing can be part of the vehicle's chassis structure. For example, a portion of the housing can be at least a part of the vehicle's floor, or a portion of the housing can be at least a part of the vehicle's crossbeams and longitudinal beams.

[0091] 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 widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of power battery applications, market demand is also constantly increasing.

[0092] The battery management unit (BMU) is typically mounted as an independent module on the battery pack housing or battery box frame, physically separated from the high-voltage box. Electrical signal exchange between the BMU and critical circuits within the high-voltage box, such as fuses, relays, and current sensors, is primarily achieved through multi-bundle wiring connections.

[0093] During the process of connecting and assembling the BMU with the high-voltage box, the connecting wire harnesses between the BMU and the components inside the high-voltage box are usually fixed one by one with wire clips. The wire management process is complicated, the assembly is difficult, and the assembly efficiency is reduced.

[0094] To reduce the assembly difficulty of battery devices, this application provides a battery device including a housing, a battery cell assembly, and a high-voltage box. The battery cell assembly and the high-voltage box are disposed within the housing. The high-voltage box includes a shell, a battery management main board, electrical components, and electrical connection components. The battery management main board is installed inside the shell. The electrical components include at least one electrical component and are installed inside the shell. The electrical connection components include an insulating component and multiple electrical connectors. The multiple electrical connectors are disposed on the insulating component and spaced apart. The insulating component is fixed to the shell, and the electrical connectors electrically connect the battery management main board and the electrical components.

[0095] In the above technical solution, by placing the battery management motherboard inside the high-voltage box housing, the separate housing for installing the battery management unit is eliminated, and the battery management motherboard and high-voltage box are integrated into a single unit. This shortens the length of the electrical connections between the battery management motherboard and the electrical components inside the high-voltage box, facilitating their connection. Furthermore, all electrical connections between the battery management motherboard and the electrical components inside the high-voltage box are housed on an insulating component. This allows all electrical connections between the battery management motherboard and the electrical components inside the high-voltage box to be integrated onto the insulating component, making them a single unit. The insulating component can then be used to fix multiple electrical connections together to the housing, eliminating the need for complex wiring and multiple wire clips on the housing. This reduces the difficulty of connecting the battery management motherboard and the electrical components inside the high-voltage box, thereby reducing the assembly difficulty of the battery management motherboard and the high-voltage box and improving the assembly efficiency of the battery device.

[0096] The battery device disclosed in this application can be used in electrical devices that use batteries as a power source or in various energy storage systems that use batteries as energy storage elements. Electrical devices can be, but are not limited to, mobile phones, tablets, laptops, electric toys, power tools, electric vehicles, electric cars, ships, spacecraft, etc. Electric toys can include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Spacecraft can include airplanes, rockets, space shuttles, and spacecraft, etc.

[0097] The electrical devices disclosed in this application can be gasoline-powered vehicles, natural gas-powered vehicles, or new energy vehicles. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device is installed inside the vehicle, and the battery device can be located at the bottom, front, or rear of the vehicle. The battery device can be used to power the vehicle; for example, the battery device can serve as the vehicle's operating power source. The vehicle may also include a controller and a motor. The controller is used to control the battery device to supply power to the motor, for example, for the vehicle's starting, navigation, and operating power needs. In some embodiments of this application, the battery device can not only serve as the vehicle's operating power source but also as the vehicle's drive power source, replacing or partially replacing gasoline or natural gas to provide driving power for the vehicle.

[0098] The following is for reference. Figures 1-12 A battery device and an electrical device according to embodiments of the present invention are described.

[0099] refer to Figures 1-3In a first aspect, embodiments of the present invention provide a battery device 100, including a housing, a battery cell assembly, and a high-voltage box 10. The battery cell assembly and the high-voltage box 10 are disposed within the housing. The high-voltage box 10 includes a housing 11, a battery management main board 12, electrical components, and an electrical connection assembly 14. The battery management main board 12 is installed inside the housing 11. The electrical components include at least one electrical component 13, which is installed inside the housing 11. The electrical connection assembly 14 includes an insulating component 141 and a plurality of electrical connectors 140. The plurality of electrical connectors 140 are all disposed on the insulating component 141 and spaced apart. The insulating component 141 is fixed to the housing 11, and the electrical connectors 140 are electrically connected to the battery management main board 12 and the electrical component 13.

[0100] The high-voltage box 10, also known as the high-voltage distribution box, is the core hub connecting the battery pack and various high-voltage loads within the battery unit 100. It plays three core roles: power distribution, safety protection, and status monitoring. The high-voltage DC power output from the individual battery cells needs to be rationally distributed through the high-voltage box 10 and delivered to different high-voltage electrical devices. The high-voltage box 10 has built-in electrical components that can quickly disconnect the battery output circuit when a short circuit or overload occurs on the load side, preventing damage to the battery pack due to high-current discharge or even thermal runaway. The high-voltage box 10 serves as a communication bridge between the battery system and the vehicle controller and battery management system: it collects current and voltage data of the high-voltage circuit in real time through Hall effect current and voltage sensors and transmits the data to the vehicle controller and battery management system. The high-voltage box 10 receives control commands from the vehicle controller and battery management system to perform actions such as connecting / disconnecting the high-voltage circuit and switching loads. For example, when the vehicle is powered off, it sequentially disconnects each high-voltage contactor according to preset logic.

[0101] The housing 11 is used to install the battery management motherboard 12 and electrical components 13, and the housing 11 can reduce the impact of external collisions on the battery management motherboard 12 and electrical components 13.

[0102] The battery management motherboard 12 is the mainboard of the Battery Management Unit (BMU), which is the core hardware carrier and control center of the battery management system. It can undertake four core functions: monitoring, protection, balancing, and communication. By acquiring key electrical parameters from the high-voltage box 10, the battery management motherboard 12 provides real-time data support for battery protection, load scheduling, and fault diagnosis, ensuring the stable operation of the entire high-voltage system.

[0103] Electrical components may include one or more electrical parts 13.

[0104] Electrical component 13 can be a relay, fuse, or high-voltage main contactor, etc.

[0105] The electrical connection component 14 is used to collect electrical signals from the electrical component 13 and transmit the electrical signals to the battery management motherboard 12.

[0106] Electrical connector 140 can be a bar plate.

[0107] For example, refer to Figure 4 Electrical connector 140 can be made of copper or aluminum; copper has a thermal conductivity of 401 W / m. K, with a conductivity of approximately 58 MS / m, utilizes the thermal and electrical conductivity of copper to make the electrical connector 140 suitable for high-current, low-loss applications.

[0108] The insulating component 141 can be made of heat-resistant insulating material, which can withstand the heat generated by the high-voltage electrical component 13 during operation while providing insulation, thereby extending the service life of the insulating component 141 and improving its reliability. The insulating component 141 can be separately formed from the housing 11. Alternatively, the insulating component 141 can be a one-piece molded part.

[0109] In the above technical solution, by placing the battery management motherboard 12 inside the housing 11 of the high-voltage box 10, the housing 11 for installing the battery management unit is eliminated, and the battery management motherboard 12 and the high-voltage box 10 are integrated into a whole. This helps to shorten the length of the electrical connectors 140 between the battery management motherboard 12 and the electrical components 13 inside the high-voltage box 10, facilitating the connection between the battery management motherboard 12 and the electrical components 13 inside the high-voltage box 10. Furthermore, all the multiple electrical connectors 140 between the battery management motherboard 12 and the electrical components 13 inside the high-voltage box 10 are located on the insulating part 141, thus ensuring that the battery management motherboard 12 and the electrical components inside the high-voltage box 10 can be connected together. Multiple electrical connectors 140 between components 13 are integrated on the insulating component 141, making the multiple electrical connectors 140 between the battery management motherboard 12 and the electrical components 13 in the high voltage box 10 a whole. The insulating component 141 can be used to fix multiple electrical connectors 140 together to the housing 11, eliminating the complicated wiring process and the need to set multiple wire clip structures on the housing 11 for fixing wires. This reduces the difficulty of connecting the battery management motherboard 12 and the electrical components 13 in the high voltage box 10, which helps to reduce the difficulty of assembling and connecting the battery management motherboard 12 and the high voltage box 10, thereby improving the assembly efficiency of the battery device 100.

[0110] In some embodiments, reference Figure 4 as well as Figure 5The electrical connector 140 includes a main body 1401, a first connecting end 1403 and a second connecting end 1404. The first connecting end 1403 and the second connecting end 1404 extend from both ends of the main body 1401. The main body 1401 is fixed to the insulating member 141. The first connecting end 1403 and the second connecting end 1404 both extend beyond the insulating member 141. The first connecting end 1403 is connected to the electrical component 13, and the second connecting end 1404 is connected to the battery management main board 12.

[0111] Electrical connector 140 can be a linear structure.

[0112] For example, refer to Figure 4 as well as Figure 5 The electrical connector 140 is designed with both ends as connection points, allowing current to flow in a straight line along the connector 140, resulting in the shortest path without redundant bends. Compared to designs with single-sided connections or leads in the middle, the straight current path reduces power loss (Joule heating) caused by conductor resistance. The current distribution is more uniform, reducing overheating and uneven temperature rise of the electrical connector 140 caused by local current concentration, thus improving system reliability. During assembly, both ends of the electrical connector 140 can be directly connected to the electrical components 13 and the battery management motherboard 12 without additional adapters, reducing wiring nodes and lowering contact resistance and fault risk. The connection at both ends is equivalent to two-point limiting of the electrical connector 140, effectively constraining the axial and radial displacement of the electrical connector 140 and reducing the possibility of bending, deformation, or loosening of the connection points caused by vibration.

[0113] In the above technical solution, the main body 1401 is fixed to the insulating member 141, and the main body 1401 of the electrical connector 140 is fixed to the housing 11 through the insulating member 141; the first connecting end 1403 and the second connecting end 1404 both extend beyond the insulating member 141, so that the first connecting end 1403 and the second connecting end 1404 can be electrically connected to the electrical component 13 and the battery management main board 12, and reduce the probability of damaging the insulating member 141 when the first connecting end 1403 is connected to the electrical component 13, and increase the operating space when the first connecting end 1403 is connected to the electrical component 13.

[0114] In some embodiments, see Figure 3 The first connecting end 1403 is welded to the electrical component 13.

[0115] In the above technical solution, the first connecting end 1403 is welded to the electrical component 13, which enhances the connection strength between the first connecting end 1403 and the electrical component 13. The weld can effectively transfer the load, allowing the first connecting end 1403 and the electrical component 13 to form a continuous whole, eliminating the probability of relative slippage and loosening, and effectively bearing dynamic loads and impact loads.

[0116] In some embodiments, see Figure 3 The first connecting end 1403 is a flat plate structure and has a first connecting surface. The electrical component 13 has a low-voltage end 130, and the low-voltage end 130 has a second connecting surface. Both the second connecting surface and the first connecting surface are planar. The second connecting surface and the first connecting surface are attached to each other and welded together.

[0117] In the above technical solution, the first connecting end 1403 is a flat plate structure, which increases the conductive contact area, reduces the contact resistance, and reduces the probability of overheating and ablation caused by poor local contact under high current; it provides a large welding position during welding, reducing the welding difficulty; the second connecting surface and the first connecting surface are both flat, and the second connecting surface and the first connecting surface are fitted together and welded together, reducing the gap between the second connecting surface and the first connecting surface and reducing the probability of poor welding.

[0118] In some embodiments, see Figure 4 as well as Figure 5 The electrical connector 140 also includes a buffer portion 1402, which is connected between the main body 1401 and the first connection end 1403. The buffer portion 1402 is exposed outside the insulating member 141 and is formed by a partial bend of the electrical connector 140.

[0119] In the above technical solution, the buffer part 1402 is exposed outside the insulating member 141 and is formed by bending part of the electrical connector 140. The buffer part 1402 can absorb vibration or thermal expansion stress and reduce the probability of fatigue fracture of the weld point.

[0120] In some embodiments, see Figure 4 as well as Figure 5 The buffer section 1402 has a U-shaped or stepped structure.

[0121] In the above technical solutions, the protrusions of the U-shaped or stepped structure increase the ability to absorb vibration or thermal expansion stress while preserving structural strength as much as possible.

[0122] In some embodiments, see Figure 7 The second connection terminal 1404 is soldered to the battery management motherboard 12.

[0123] In the above technical solution, the second connection end 1404 is welded to the battery management motherboard 12, which enhances the connection strength between the second connection end 1404 and the battery management motherboard 12. The weld can effectively transfer the load, allowing the second connection end 1404 and the battery management motherboard 12 to form a continuous whole, reducing the probability of relative slippage and loosening, and effectively withstanding dynamic loads and impact loads.

[0124] In some embodiments, see Figures 5 to 7 The battery management motherboard 12 is provided with a plug hole 120, and the second connection end 1404 is plugged into and soldered to the plug hole 120.

[0125] The second connecting end 1404 can be straight.

[0126] For example, see Figure 5 The straight second connection end 1404 can be easily plugged into the plug hole 120. The battery management motherboard 12 is usually surrounded by a large number of components, and the space is very limited. The straight structure of the second connection end 1404 allows the second connection end 1404 to be arranged closely along the linear space of the battery management motherboard 12 without interfering with the surrounding components, thus reducing the difficulty of layout design.

[0127] In the above technical solution, the battery management motherboard 12 is provided with a plug hole 120. The second connection end 1404 is plugged into and soldered to the plug hole 120. The plug hole 120 can realize the pre-positioning of the battery management motherboard 12 and the second connection end 1404, reducing the probability of misalignment, displacement, poor soldering, and off-center soldering of the connection end during the soldering process. The soldering forms a metallurgical bond, reducing the contact resistance present in pure plug-in connection, improving the continuity of the conductive path, and reducing heat generation and voltage loss during current transmission.

[0128] In some embodiments, see Figures 3 to 5 The electrical connector 140 also includes a connecting segment 1405, which is connected between the main body 1401 and the second connecting end 1404 and exposed to the insulating member 141. The connecting segment 1405 and the main body 1401 have an included angle.

[0129] The connecting segment 1405 can be an inclined extension or a vertical extension.

[0130] For example, see Figure 5 The connecting segment 1405 extends vertically. When there is a height difference between the main body 1401 and the plug hole 120 of the battery management motherboard 12, the connecting segment 1405 extends the second connecting end 1404 to the same horizontal height as the plug hole 120, so that the second connecting end 1404 can be plugged into the plug hole 120.

[0131] In the above technical solution, by connecting the connecting segment 1405 between the main body 1401 and the second connecting end 1404 and exposing it to the insulating member 141, the connecting segment 1405 and the main body 1401 have an angle, so that the position of the second connecting end 1404 corresponds to the position of the connection point of the battery management motherboard 12, which facilitates the connection of the second connecting end 1404 and the battery management motherboard 12.

[0132] In some embodiments, see Figure 6 At least a portion of the main body 1401 is embedded within the insulating member 141.

[0133] In the above technical solution, at least a portion of the main body 1401 is embedded within the insulating member 141, thereby insulating at least a portion of the main body 1401; and by adopting the method of at least partial embedding, the main body 1401 is connected to the insulating member 141 more tightly and with greater connection strength.

[0134] In some embodiments, see Figure 6 The insulating component 141 is integrally injection molded onto multiple electrical connectors 140.

[0135] Electrical connectors 140 can be used as high-current conductors. When multiple electrical connectors 140 are arranged in this way, they are prone to phase-to-phase short circuits or creepage phenomena (current discharges along the insulation surface) due to insufficient spacing, air humidity, and dust adhesion. Insulators 141 can be made of high-temperature resistant and high-insulation-strength materials, which can keep adjacent electrical connectors 140 at a safe distance and block the current conduction path. At the same time, during the operation of the battery device 100, electrical connectors 140 may be displaced or deformed due to electromagnetic vibration (repulsive / attractive force generated when a large current passes through) and thermal expansion and contraction. Insulators 141 can accurately position and clamp multiple electrical connectors 140, ensuring that the spacing of electrical connectors 140 is consistent and reducing the possibility of insulation layer damage due to vibration and friction. The integrated injection molding structure can distribute the weight and stress of electrical connectors 140 and prevent electrical connectors 140 from bending and deforming due to long-term stress.

[0136] In the above technical solution, the insulating component 141 is integrally injection molded onto multiple electrical connectors 140, so that multiple electrical connectors 140 are set on one insulating component 141. Multiple electrical connectors 140 can collect multiple signals, eliminating the need for each electrical connector 140 to have a corresponding insulating component 141, reducing the number of insulating components 141 and simplifying the structure of the battery device 100; and the positioning of multiple electrical connectors 140 can be achieved in one injection molding, reducing the processing difficulty.

[0137] In some embodiments, see Figure 6 The electrical connector 140 is provided with a first positioning hole 14010, and the insulating component 141 is provided with a second positioning hole 1410, the second positioning hole 1410 being positioned corresponding to the first positioning hole 14010.

[0138] The insulating element 141 can be formed on the electrical connector 140 by injection molding.

[0139] For example, during injection molding, the electrical connector 140 needs to be stably placed in a preset position within the mold cavity. The first positioning hole 14010 can cooperate with the positioning pin / positioning post inside the mold to fix the first positioning hole 14010, reducing the probability of the electrical connector 140 shifting, floating, or deforming due to the impact and flow pressure of the molten plastic during injection molding. This improves the accuracy of the depth and position of the electrical connector 140 finally embedded in the insulating component 141, reducing the probability of the electrical connector 140 being exposed or the local insulation layer being too thin.

[0140] The second positioning hole 1410 and the first positioning hole 14010 can be set coaxially.

[0141] In the above technical solution, the electrical connector 140 is provided with a first positioning hole 14010, and the insulating component 141 is provided with a second positioning hole 1410. The second positioning hole 1410 corresponds to the first positioning hole 14010. When the insulating component 141 and the electrical connector 140 are injection molded, the electrical connector 140 can be positioned through the second positioning hole 1410 to prevent the electrical connector 140 from being displaced by the impact of the injection liquid during the injection molding process, which would lead to a decrease in positional accuracy and changes in the distance between multiple electrical connectors 140.

[0142] In some embodiments, see Figure 3 The insulating component 141 is fixed to the housing 11 by fasteners.

[0143] Fasteners can be bolts, rivets, or studs.

[0144] In the above technical solution, the insulating component 141 is fixed to the housing 11 by fasteners. The fasteners can be used to fix the components, and assembly and disassembly can be completed with simple tools without damaging the insulating component 141, thus reducing the probability of damage to the electrical connector 140.

[0145] In some embodiments, see Figure 8 The housing 11 is provided with a fixing post 1115, which is located inside the housing 11. The insulating component 141 is provided with a fixing point, which is connected to the fixing post 1115 by fasteners.

[0146] The fixing post 1115 can be a rivet post.

[0147] For example, refer to Figure 8 The rivet extends vertically. (Refer to...) Figure 6The insulating component 141 is provided with riveting holes 1411, which are through holes. The insulating component 141 is inserted into the rivet post through the riveting holes 1411. The rivet post is heated and melted, then pressed into a rivet head, thereby fixing the insulating component 141 to the housing 11. After cooling, the rivet head forms a dual connection structure with the insulating component 141 through mechanical interlocking and molecular-level fusion, resulting in strong tensile and shear resistance. Specifically, there are multiple rivets, and the number of riveting holes 1411 corresponds to the number of rivets. The multiple rivets are parallel to each other, and the line connecting at least three rivets forms a triangle, increasing the stability of the fixing between the insulating component 141 and the housing 11.

[0148] The setting of the fixing post 1115 allows the fixing operation of the insulating part 141 and the housing 11 to be located at the upper end inside the high voltage box 10, which increases the operating space and facilitates operation.

[0149] In the above technical solution, by setting a fixing post 1115 inside the housing 11, the fixing point of the insulating component 141 is connected to the fixing post 1115 by fasteners, thereby improving the ease of operation when the insulating component 141 is fixed by fasteners.

[0150] In some embodiments, see Figure 6 The insulating element 141 has multiple fixing points between itself and the housing 11, and at least three of the fixing points are arranged in a triangular pattern.

[0151] The fixing point can be a rivet hole 1411, a through hole, or a threaded hole.

[0152] In the above technical solution, at least three of the multiple fixing points are arranged in a triangle. The three fixing points arranged in a triangle can form a stable support plane. When the insulating component 141 is subjected to compression, vibration and impact, the probability of it rotating, warping or overturning around a certain axis is reduced, and the stability of the fixing between the insulating component 141 and the shell 11 is enhanced.

[0153] In some embodiments, see Figure 3 The electrical components 13 are arranged at intervals, and the electrical connection components 14 are located between two adjacent electrical components 13. The multiple electrical connection components 140 are electrically connected to the two electrical components 13 respectively.

[0154] The electrical connection assembly 14 can collect signals from multiple electrical components 13.

[0155] For example, such as Figure 3As shown, the electrical connection assembly 14 includes four electrical connectors 140. The first connection end 1403 of two electrical connectors 140 collects different signals from the same electrical component 13, and the first connection end 1403 of the other two electrical connectors 140 collects different signals from another electrical component 13. The same electrical connection assembly 14 can simultaneously collect signals from multiple electrical components 13, and can simultaneously collect multiple signals from the same electrical component 13, thereby improving signal acquisition efficiency.

[0156] In the above technical solution, the electrical connection component 14 is located between two adjacent electrical components 13, and multiple electrical connection components 140 are electrically connected to the two electrical components 13 respectively, so that one electrical connection component 14 can be electrically connected to the two electrical components 13 at the same time, and the electrical signals of the two electrical components 13 can be collected, which simplifies the structure of the high voltage box 10.

[0157] In some embodiments, see Figures 9 to 10 The electrical component 13 includes a low-voltage terminal 130 and a high-voltage terminal 131. The electrical connector 140 is electrically connected to the battery management motherboard 12 and the low-voltage terminal 130. The high-voltage box 10 also includes a conductive component 15 and a heat sink 16. The conductive component 15 is at least partially embedded in the housing 11. The conductive component 15 is electrically connected to the battery management motherboard 12 and the high-voltage terminal 131. The heat sink 16 is fixed to the outside of the housing 11. The position of the heat sink 16 corresponds to the position of the conductive component 15 and is used to dissipate heat from the conductive component 15.

[0158] The conductive component 15 can be a split structure.

[0159] For example, refer to Figure 10The conductive component 15 includes a first conductive element 151 and a second conductive element 152. The first conductive element 151 is fixedly connected to the battery management mainboard 12. The first conductive element 151 and the second conductive element 152 are at least partially overlapped, and the overlap portion of the first conductive element 151 and the second conductive element 152 is embedded in the housing 11. The second conductive element 152 is welded to the electrical component 13. The first conductive element 151 includes a vertical extension and a horizontal extension. The vertical extension extends from the horizontal extension and is perpendicular to the horizontal extension. The end of the vertical extension away from the horizontal extension is fixed to the battery management mainboard 12. The entire horizontal extension is injection molded and embedded in the housing 11. The end of the horizontal extension away from the vertical extension overlaps with the second conductive element 152. The horizontal extension is located above the second conductive element 152, bringing the second conductive element 152 closer to the outside of the housing 11 for better heat dissipation. A portion of the second conductive element 152 is exposed outside the housing 11, forming a welding point, which is welded to the high-voltage terminal 131 at the bottom of the electrical component 13. By making the conductive component 15 into a split structure, the assembly problem caused by the large size and excessive rigidity of the integral conductive component 15 is solved. For the narrow and irregular space inside the high voltage box 10, the first conductive component 151 and the second conductive component 152 can be installed in steps and positions, reducing the spatial interference between the conductive component 15 and surrounding components (such as relays, fuses, and sensors).

[0160] The width of the second conductive element 152 can be greater than the width of the first conductive element 151.

[0161] For example, such as Figure 10 As shown, the second conductive element 152 is connected to the high-voltage terminal 131. The second conductive element 152 operates at a high temperature. Along the thickness direction of the housing 11, the second conductive element 152 is located near the outside of the housing 11. When the width of the second conductive element 152 is greater than the width of the first conductive element 151, the contact area between the second conductive element 152 and the heat sink 16 is increased, thereby improving the heat dissipation efficiency. This also reduces the welding difficulty between the second conductive element 152 and the electrical component 13, as well as the resistance of the second conductive element 152. The width of the first conductive element 151 is smaller than the width of the second conductive element 152, thus reducing the material used in the first conductive element 151.

[0162] The high-voltage end 131 can be located at the bottom of the housing 11.

[0163] For example, the bottom of the electrical component 13 is glued to the base plate 1111. The high-voltage end 131 is positioned facing the base plate 1111, i.e., the electrical component 13 is inverted, forming a shorter current path, reducing heat generation and energy loss, reducing the number of connectors, and improving connection reliability; the internal space utilization of the high-voltage box 10 is improved, and the layout is more compact.

[0164] Electrical component 13 can be a relay.

[0165] In the above technical solution, by setting a heat sink 16 on the outside of the housing 11, and the position of the heat sink 16 is the same as that of the conductive component 15, the heat sink 16 dissipates the heat generated by the conductive component 15 and transfers it to the outside of the high voltage box 10, thereby achieving the heat dissipation function, reducing the overall temperature peak inside the high voltage box 10, which is beneficial to extending the life of the electrical components 13, reducing local overheating, and reducing the impact of thermal stress on sampling accuracy.

[0166] In some embodiments, see Figure 10 as well as Figure 11 A heat-conducting layer is provided between the heat sink 16 and the conductive component 15.

[0167] The thermally conductive layer can be an insulating thermally conductive layer. For example, the thermally conductive layer can be a thermally conductive pad.

[0168] In the above technical solution, a heat-conducting layer is provided between the heat sink 16 and the conductive component 15. The heat of the conductive component 15 is transferred to the heat sink 16 through the heat-conducting layer, thereby accelerating heat transfer and improving heat dissipation efficiency.

[0169] In some embodiments, see Figure 10 as well as Figure 11 Heat sink 16 is a water-cooled plate.

[0170] In the above technical solution, by setting the heat sink 16 as a water-cooled plate, the coolant inside the water-cooled plate carries away the heat of the conductive component 15, thereby improving the heat dissipation efficiency.

[0171] In some embodiments, see Figure 9 The battery management motherboard 12 is fixed to the housing 11.

[0172] The battery management motherboard 12 can be located on the side of the electrical components.

[0173] For example, the battery management motherboard 12 is located on one side of the electrical components in the horizontal direction and is arranged in the vertical direction.

[0174] In the above technical solution, the battery management motherboard 12 is fixed to the housing 11, so that the battery management motherboard 12 is positioned relative to the housing 11. The force of the battery management motherboard 12 is transferred to the housing 11, which has higher strength, thereby reducing the load on the battery management motherboard 12. The battery management motherboard 12 maintains a designed distance from the surrounding components, thereby reducing the probability of failure caused by abnormal friction.

[0175] In some embodiments, see Figure 9 The battery management motherboard 12 is detachably connected to the housing 11.

[0176] For example, the battery management motherboard 12 and the housing 11 can be connected by bolts or screws.

[0177] In the above technical solution, the battery management motherboard 12 and the housing 11 are detachably connected, and assembly and disassembly can be completed using simple tools without damaging the battery management motherboard 12 and the housing 11.

[0178] In some embodiments, the housing 11 includes a housing body 1401 and a spacer 1112. The spacer 1112 is disposed inside the housing body 1401 and divides the space inside the housing body 1401 into a first receiving space 113 and a second receiving space 114. The battery management main board 12 is received in the first receiving space 113, and the electrical components are received in the second receiving space 114.

[0179] The shell 11 can be a split structure.

[0180] For example, see Figure 2 The housing 11 includes a top cover 110 and a base 111, which together form a receiving space. The battery management mainboard 12 and electrical components 13 are all installed within this receiving space. (See also...) Figure 9 The conductive component 15 is at least partially embedded in the base 111. See also... Figure 11 The upper cover 110 has a latching part 1101, and the latching part 1101 has a latching groove 1102. The base 111 has a latching protrusion 1110, which latches with the latching groove 1102 to fix the upper cover 110 to the base 111. After the upper cover 110 and the base 111 are fixed, an internal receiving space is formed.

[0181] For example, see Figure 9 The top cover 110 includes a top plate 1103 and a plurality of first side plates 1104, the plurality of first side plates 1104 extending from the top plate 1103. The base 111 includes a bottom plate 1111 and a plurality of second side plates, the plurality of second side plates extending from the bottom plate 1111. At least one first side plate 1104 or at least one second side plate forms a partition 1112. The partition 1112 is located in the receiving space and divides the receiving space into a first receiving space 113 and a second receiving space 114. The battery management main board 12 is located in the first receiving space 113, and the electrical components 13 are located in the second receiving space 114.

[0182] For example, see Figure 8 There are four second side plates, arranged in pairs opposite each other. Along the width direction of the high-voltage box 10, the distance between two second side plates is less than the width of the bottom plate 1111, so that one second side plate is located within the receiving space to form a partition plate 1112. The width of the second receiving space 114 is greater than the width of the first receiving space 113.

[0183] For example, see Figure 8The base 111 also includes a partition 1113 located inside the receiving space. The partition 1113 divides the first receiving space 113 into multiple receiving cavities 1114 along the length of the high-voltage box 10. The receiving cavities 1114 are used to install electrical components 13. The number of partitions 1113 is set according to the number of electrical components 13.

[0184] In the above technical solution, the battery management motherboard 12 is housed in the first housing space 113, and the electrical components are housed in the second housing space 114. The battery management motherboard 12 and the electrical components 13 are located in different housing spaces within the high-voltage box 10. The battery management motherboard 12 is the low-voltage control core, responsible for sampling, calculation, communication, and issuing protection commands. The electrical components 13 are high-voltage power components that carry the large current of the main circuit of the battery pack. The compartmentalized arrangement can structurally cut off the path of high voltage current entering the low-voltage area, reducing the possibility of the battery management motherboard 12 being burned out by high voltage. When the high-voltage electrical components 13 are working, they will generate strong electromagnetic interference. The independent housing space can block these interferences, reducing the probability of sampling signal distortion, communication interruption, or false triggering of protection logic of the battery management motherboard 12. When the high-voltage electrical components 13 conduct large currents, they will generate a large amount of Joule heat, and the temperature rise of some components can reach tens of degrees Celsius. The chips, sensors, capacitors, etc. on the battery management motherboard 12 are extremely sensitive to temperature. The heat source is isolated from the sensitive components, which can reduce the risk of accelerated aging and performance degradation of the components due to long-term high temperature of the battery management motherboard 12.

[0185] In some embodiments, see Figure 9 The battery management motherboard 12 is fixed to the spacer plate 1112.

[0186] In the above technical solution, the battery management motherboard 12 is fixed to the spacer plate 1112, so that the battery management motherboard 12 is positioned relative to the spacer plate 1112. The force of the battery management motherboard 12 is transferred to the spacer plate 1112 with higher strength, reducing the load on the battery management motherboard 12. The battery management motherboard 12 maintains a designed distance from the surrounding components, reducing the probability of failure caused by abnormal friction.

[0187] refer to Figure 12 Secondly, the present invention provides an electrical device 1000, comprising: a battery device 100 according to an embodiment of the first aspect of the present invention.

[0188] The electrical device 1000 can be a vehicle, and the battery device 100 can be installed at the bottom of the vehicle body 200.

[0189] In the above technical solution, the electrical device 1000 includes a battery device 100 according to the first aspect embodiment of the present invention. By placing the battery management motherboard 12 inside the housing 11 of the high-voltage box 10, the housing 11 for installing the battery management unit is eliminated, and the battery management motherboard 12 and the high-voltage box 10 are integrated into one unit. This helps to shorten the length of the electrical connectors 140 between the battery management motherboard 12 and the electrical components 13 inside the high-voltage box 10, and facilitates the connection between the battery management motherboard 12 and the electrical components 13 inside the high-voltage box 10. Furthermore, the multiple electrical connectors 140 between the battery management motherboard 12 and the electrical components 13 inside the high-voltage box 10 are all located on the insulating member 141, which allows the battery to be... Multiple electrical connectors 140 between the mainboard 12 and the electrical components 13 inside the high-voltage box 10 are integrated on the insulating component 141, making the multiple electrical connectors 140 between the mainboard 12 and the electrical components 13 inside the high-voltage box 10 a whole. The insulating component 141 can be used to fix the multiple electrical connectors 140 together to the housing 11, eliminating the complicated wiring process and the need to set multiple wire clip structures on the housing 11 for fixing the wires. This reduces the connection difficulty between the mainboard 12 and the electrical components 13 inside the high-voltage box 10, which helps to reduce the assembly connection difficulty between the mainboard 12 and the high-voltage box 10, thereby improving the assembly efficiency of the battery device 100.

[0190] The following reference Figures 1-11 A battery device 100 according to some embodiments of the present invention is described.

[0191] In this embodiment, the battery device 100 includes a housing, a battery cell assembly, and a high-voltage box 10. The battery cell assembly and the high-voltage box 10 are disposed within the housing. The high-voltage box 10 includes a housing 11, a battery management main board 12, electrical components, and electrical connection components 14. The battery management main board 12 is installed inside the housing 11. The electrical components include at least one electrical component 13, which is installed inside the housing 11. The electrical connection components 14 include an insulating component 141 and multiple electrical connectors 140. The multiple electrical connectors 140 are all disposed on the insulating component 141 and spaced apart. The insulating component 141 is fixed to the housing 11, and the electrical connectors 140 are electrically connected to the battery management main board 12 and the electrical component 13.

[0192] The electrical connector 140 includes a main body 1401, a first connecting end 1403 and a second connecting end 1404. The first connecting end 1403 and the second connecting end 1404 extend from both ends of the main body 1401. The main body 1401 is fixed to the insulating member 141. The first connecting end 1403 and the second connecting end 1404 both extend beyond the insulating member 141. The first connecting end 1403 is connected to the electrical component 13, and the second connecting end 1404 is connected to the battery management main board 12.

[0193] The first connecting end 1403 is welded to the electrical component 13. The first connecting end 1403 is a flat plate structure and has a first connecting surface. The electrical component 13 has a low-voltage end 130, and the low-voltage end 130 has a second connecting surface. Both the second connecting surface and the first connecting surface are planar. The second connecting surface and the first connecting surface are fitted together and welded together.

[0194] The electrical connector 140 also includes a buffer portion 1402, which is connected between the main body 1401 and the first connection end 1403. The buffer portion 1402 is exposed outside the insulating member 141 and is formed by a partial bend of the electrical connector 140. The buffer portion 1402 has a U-shaped or stepped structure.

[0195] The second connection terminal 1404 is soldered to the battery management main board 12. The battery management main board 12 is provided with a plug-in hole 120, and the second connection terminal 1404 is plugged into and soldered to the plug-in hole 120.

[0196] The electrical connector 140 also includes a connecting segment 1405, which is connected between the main body 1401 and the second connecting end 1404 and exposed to the insulating member 141. The connecting segment 1405 and the main body 1401 have an included angle.

[0197] At least a portion of the main body 1401 is embedded within the insulating member 141. The insulating member 141 is integrally injection molded onto a plurality of electrical connectors 140. The electrical connectors 140 are provided with a first positioning hole 14010, and the insulating member 141 is provided with a second positioning hole 1410, the second positioning hole 1410 corresponding to the position of the first positioning hole 14010.

[0198] Insulator 141 is secured to housing 11 by fasteners. (See also...) Figure 8 The housing 11 is provided with a fixing post 1115, which is located inside the housing 11. The insulating component 141 is provided with a fixing point, which is connected to the fixing post 1115 by fasteners. (See reference) Figure 6 The insulating element 141 has multiple fixing points between itself and the housing 11, and at least three of the fixing points are arranged in a triangular pattern.

[0199] The electrical components 13 are arranged in multiple spaced intervals, and the electrical connection components 14 are located between two adjacent electrical components 13. The multiple electrical connection components 140 are electrically connected to the two electrical components 13 respectively.

[0200] Electrical component 13 includes a low-voltage terminal 130 and a high-voltage terminal 131. Electrical connector 140 is electrically connected to the battery management motherboard 12 and the low-voltage terminal 130. High-voltage box 10 also includes conductive component 15 and heat sink 16. Conductive component 15 is at least partially embedded in housing 11. Conductive component 15 is electrically connected to the battery management motherboard 12 and the high-voltage terminal 131. Heat sink 16 is fixed to the outside of housing 11. The position of heat sink 16 corresponds to the position of conductive component 15 and is used to dissipate heat from conductive component 15.

[0201] A heat-conducting layer is provided between the heat sink 16 and the conductive component 15.

[0202] Heat sink 16 is a water-cooled plate.

[0203] The battery management motherboard 12 is fixed to the housing 11. The battery management motherboard 12 is detachably connected to the housing 11. The housing 11 includes a housing body 1401 and a spacer plate 1112. The spacer plate 1112 is disposed inside the housing body 1401 and divides the space inside the housing body 1401 into a first receiving space 113 and a second receiving space 114. The battery management motherboard 12 is received in the first receiving space 113, and the electrical components are received in the second receiving space 114. The battery management motherboard 12 is fixed to the spacer plate 1112.

[0204] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0205] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery device, characterized in that, include: The enclosure comprises a battery cell assembly and a high-voltage box, wherein the battery cell assembly and the high-voltage box are housed within the enclosure, and the high-voltage box includes... case; A battery management motherboard, which is installed inside the housing; An electrical assembly includes a plurality of spaced electrical components, the electrical assembly being installed inside the housing, the electrical components including a low-voltage end and a high-voltage end; An electrical connection assembly includes an insulating component and multiple electrical connectors, all of which are disposed on the insulating component and spaced apart. Each electrical connector includes a main body, a first connecting end, and a second connecting end. The first connecting end and the second connecting end extend from both ends of the main body. The main body is fixed to the insulating component. The first connecting end and the second connecting end both extend beyond the insulating component. The first connecting end is connected to the low-voltage end, and the second connecting end is connected to the battery management main board. The insulating component is fixed to the housing. A conductive component is at least partially embedded in the housing, and the conductive component is electrically connected to the battery management motherboard and the high-voltage terminal; The electrical connection assembly is located between two adjacent electrical components, and the plurality of electrical connections are electrically connected to the two electrical components respectively.

2. The battery device according to claim 1, characterized in that, The first connection end is welded to the electrical component.

3. The battery device according to claim 2, characterized in that, The first connecting end is a flat plate structure and has a first connecting surface. The electrical component has a low-voltage end and a second connecting surface. Both the second connecting surface and the first connecting surface are planar. The second connecting surface and the first connecting surface are fitted together and welded together.

4. The battery device according to claim 2, characterized in that, The electrical connector further includes a buffer portion connected between the main body and the first connection end, the buffer portion being exposed outside the insulating member and formed by a partial bend of the electrical connector.

5. The battery device according to claim 4, characterized in that, The buffer section has a U-shaped or stepped structure.

6. The battery device according to claim 1, characterized in that, The second connection terminal is soldered to the battery management motherboard.

7. The battery device according to claim 6, characterized in that, The battery management motherboard has a plug-in hole, and the second connection end is plugged into and soldered to the plug-in hole.

8. The battery device according to claim 1, characterized in that, The electrical connector further includes a connecting segment that is connected between the body and the second connecting end and exposed outside the insulating member, and the connecting segment has an angle with the body.

9. The battery device according to claim 1, characterized in that, At least a portion of the main body is embedded within the insulating element.

10. The battery device according to claim 1, characterized in that, The insulating component is integrally injection molded onto multiple electrical connectors.

11. The battery device according to claim 10, characterized in that, The electrical connector is provided with a first positioning hole, and the insulating component is provided with a second positioning hole, the second positioning hole being positioned corresponding to the first positioning hole.

12. The battery device according to claim 1, characterized in that, The insulating component is fixed to the housing by fasteners.

13. The battery device according to claim 12, characterized in that, The housing is provided with a fixing post, which is located inside the housing. The insulating component is provided with a fixing point, which is connected to the fixing post by a fastener.

14. The battery device according to claim 13, characterized in that, The insulating element has multiple fixing points with respect to the housing, and at least three of the fixing points are arranged in a triangular pattern.

15. The battery device according to claim 1, characterized in that, The high-voltage box also includes a heat sink, which is fixed to the outside of the housing. The position of the heat sink corresponds to the position of the conductive component and is used to dissipate heat from the conductive component.

16. The battery device according to claim 15, characterized in that, A heat-conducting layer is provided between the heat sink and the conductive component; and / or, the heat sink is a water-cooled plate.

17. The battery device according to any one of claims 1-16, characterized in that, The battery management motherboard is fixed to the housing.

18. The battery device according to claim 17, characterized in that, The battery management motherboard is detachably connected to the housing.

19. The battery device according to claim 1, characterized in that, The housing includes a housing body and a partition plate. The partition plate is disposed inside the housing body and divides the space inside the housing body into a first receiving space and a second receiving space. The battery management main board is received in the first receiving space, and the electrical components are received in the second receiving space.

20. The battery device according to claim 19, characterized in that, The battery management motherboard is fixed to the spacer plate.

21. An electrical appliance, characterized in that, include: The battery device according to any one of claims 1-20.

Images